CN112081108A

CN112081108A - System for foundation pit slope protection construction

Info

Publication number: CN112081108A
Application number: CN202011039543.6A
Authority: CN
Inventors: 不公告发明人
Original assignee: Anhui Lanxi Engineering Technology Development Co ltd
Current assignee: Anhui Lanxi Engineering Technology Development Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2020-12-15

Abstract

The invention belongs to the technical field of building construction, and particularly relates to a system for foundation pit slope protection construction, which comprises a foundation pit slope protection guniting manipulator and a guniting machine used for conveying sand and ash to the foundation pit slope protection guniting manipulator; the spray head mechanism has two states of rotary spraying and vertical spraying, mortar can be obliquely sprayed to the area below the reinforcing steel bar net in the rotary spraying state, the space below the reinforcing steel bar net is fully filled with the mortar, the surface of the mortar can be trimmed in the vertical spraying state, the spraying is more uniform, and the surface flatness of the protective slope surface is ensured. The multi-layer partition plates are used for blocking the sand ash at different heights of the cylinder cavity, so that the sand ash can flow downstream more uniformly when being sprayed, rather than being sprayed downstream by a jet of liquid, and the uniformity of guniting is effectively improved.

Description

System for foundation pit slope protection construction

Technical Field

The invention belongs to the technical field of building construction, and particularly relates to a system for foundation pit slope protection construction.

Background

Before building construction, a foundation pit needs to be excavated, and then construction of a building foundation is carried out in the foundation pit. In order to prevent the slope surface of the foundation pit from collapsing, the slope surface of the foundation pit generally needs to be reinforced, the common reinforcing mode is reinforcing steel bar net rack cement mortar, namely reinforcing steel bar nets are paved on the slope surface at present and then the cement mortar is sprayed on the slope surface. However, the laying process of the mesh reinforcement is before the guniting process, so the mesh reinforcement can block the grout to a certain extent during the guniting operation, the grout cannot fully fill the area right below the steel wire, but the phenomenon of hollowing of the slope protection surface layer is caused, and the construction quality is affected.

In addition, the shotcrete machine among the prior art is mostly multi-cylinder rotary shotcrete machine, and the principle of this shotcrete machine is similar to the structure of bullet going up of left-hand wheel rifle, loads the sand and ash at first in a plurality of barrel chambeies that the rotary drum circumference was arranged, with the sand and ash blowout when barrel chamber operation was to the wind channel, the defect of this kind of structure lies in that the sand and ash can be piled up in barrel chamber bottom after getting into the barrel chamber, consequently the material is too concentrated during the injection, and the whitewashing homogeneity is relatively poor.

Disclosure of Invention

The invention aims to provide a system for foundation pit slope protection construction, which can improve the density uniformity of a mortar layer and improve the mortar spraying construction quality.

The technical scheme adopted by the invention is as follows:

a system for foundation pit slope protection construction comprises a foundation pit slope protection guniting manipulator and a guniting machine used for conveying sand and ash to the foundation pit slope protection guniting manipulator; the foundation pit slope protection slurry spraying manipulator comprises a swing arm mechanism and a multifunctional mortar spray head mechanism arranged at the front end of the swing arm mechanism; the multifunctional mortar sprayer mechanism is arranged on the rotary table, the rotary table is rotatably arranged on the sliding table, the sliding table is connected with the swing arm in a sliding mode along the length direction of the swing arm, the swing arm is rotatably connected with the middle seat, the middle seat is rotatably connected with the large arm, a rotating shaft between the swing arm and the middle seat is perpendicular to a rotating shaft between the middle seat and the large arm, and the rotating shaft of the rotary table is parallel to the rotating shaft between the swing arm and the middle seat; a third linkage mechanism is arranged among the rotary table, the swing arm and the rotary arm, and is assembled to drive the rotary table to rotate relative to the sliding table when the upper swing arm rotates relative to the middle base, the rotating angular speed of the rotary table is the same as that of the swing arm, and the rotating direction of the rotary table is opposite to that of the swing arm; the multifunctional mortar sprayer mechanism comprises a fixed pipe and a gyrotron, the fixed pipe is fixedly connected with an installation plate, the installation plate is arranged on a rotary table in a sliding mode, the sliding direction of the installation plate is parallel to the axis direction of a main pipe, the gyrotron comprises a main pipe and two branch pipes which are arranged at one end of the main pipe in a branching mode, one end, away from the branch pipes, of the main pipe is rotatably connected with the fixed pipe, the two branch pipes respectively extend in two opposite radial directions of the main pipe, a rotary sprayer is arranged at the end portions of the two branch pipes respectively, the rotary sprayer is rotatably connected with the branch pipes, a rotating shaft of the rotary sprayer is parallel to the length direction of the branch pipes, and the spraying direction of the rotary; the rotary sprayer is assembled to move between the following two stations: in the first station, the spraying direction of the rotary spray head and the axis of the main pipe form an included angle, and the reaction force generated when the rotary spray head sprays mortar under the first station can push the rotary pipe to rotate; the spraying direction of the rotary spray head is parallel to the axial direction of the main pipe, and the rotary pipe is static relative to the fixed pipe under the station; the device also comprises a switching mechanism for driving the rotary spray head to switch between the first station and the second station; the slurry spraying machine comprises a feeding mechanism and a material homogenizing mechanism, wherein the feeding mechanism comprises a screening unit, a collecting hopper and a distributing hopper, the screening unit is used for filtering sand ash, the collecting hopper is positioned below the screening unit, the distributing hopper is positioned below the collecting hopper, the receiving hopper is used for collecting the sand ash screened by the screening unit and guiding the sand ash into the distributing hopper, and a material stirring impeller is arranged in the distributing hopper; the aggregate bin guides the sand and the ash to a position between two adjacent blades of the material poking impeller; the material homogenizing mechanism comprises a rotary drum, the rotary drum is rotatably arranged on the rack along a vertical axis, the material stirring impeller is synchronously and rotatably connected with the rotary drum, a plurality of independent drum cavities are uniformly arranged at intervals along the circumferential direction of the rotary drum, each drum cavity is in one-to-one correspondence with the area between each adjacent blade of the material stirring impeller, the upper end and the lower end of the rotary drum are respectively provided with a top plate and a bottom plate fixedly connected with the rack, the material distributing hopper is positioned above the top plate, the top surface and the bottom surface of the rotary drum are respectively in sliding sealing connection with the top plate and the bottom plate, the top plate is provided with a material inlet, the bottom plate is provided with a material outlet, and the material inlet and the material; the feeding hole is in a vortex line shape, and is gradually far away from the center of the material stirring impeller from one end to the other end; a plurality of partition plates are arranged in the cylinder cavity at intervals along the vertical direction, the partition plates have vertical postures and horizontal postures, when the partition plates are horizontal, the cylinder cavity can be divided into a plurality of sub-cavities which are vertically arranged, and when the partition plates are vertical, the sub-cavities can be communicated with each other into a whole; the rotary drum is provided with a partition plate control mechanism which is assembled to be capable of sequentially driving each partition plate from bottom to top to be switched from a vertical state to a horizontal state when the drum cavity passes below the feed port, and capable of driving each partition plate to be switched from the horizontal state to the vertical state when the drum cavity passes above the discharge port; a first air channel is formed in the top plate, one end of the first air channel is communicated with the air inlet pipe, and the other end of the first air channel is arranged opposite to the discharge hole along the vertical direction; the discharge port is connected with a discharge pipe, a second air channel is arranged on the pipe wall of the discharge pipe along the tangential direction of the pipe wall, one end of the second air channel is communicated with the inner cavity of the discharge pipe, and the other end of the second air channel is communicated with an air inlet pipe; the fixed pipe is communicated with the discharge pipe through a pipeline, and the fixed pipe is also connected with a water inlet pipe.

The foundation pit slope protection slurry spraying manipulator further comprises a rotary arm, the rotary arm is fixedly connected with the rotary pipe, and the rotary spray head is rotatably connected with the rotary arm through a bearing; the switching mechanism comprises a floating roller arranged on the rotary arm, the floating roller is rotatably arranged on a roller support, the axis of the floating roller is arranged along the radial direction of the main pipe, the roller support is arranged on the rotary arm in a sliding mode, the sliding direction of the roller support is parallel to the axis direction of the main pipe, and an annular roller path matched with the floating roller is arranged on the mounting disc; a first pressure spring is arranged between the roller bracket and the rotary arm, and the first pressure spring is assembled to enable the elastic force of the first pressure spring to drive the roller bracket to slide towards the direction close to the environmental roller path; the annular roller path is provided with a telescopic block, the telescopic block is in sliding connection with the mounting disc and is provided with a station a and a station b, when the telescopic block is at the station a, the telescopic block is flush with the annular roller path, the floating roller can continuously walk along the annular roller path, when the telescopic block is at the station b, the telescopic block slides towards the direction far away from the floating roller and forms a pit on the annular roller path, and at the moment, the floating roller can sink into the pit under the action of a first pressure spring; a first linkage mechanism is arranged between the roller bracket and the rotary spray head, and is assembled to enable the rotary spray head to be kept at a first station when the floating roller runs on the annular roller path, and to switch the rotary spray head at the first station to a second station when the floating roller falls into the pit; the first linkage mechanism comprises a transition shaft which is rotationally connected with the rotary arm, a first gear is fixedly connected onto the transition shaft, a second gear is fixedly connected onto the rotary spray head, the first gear is meshed with the second gear, a swing rod is further fixedly connected onto the transition shaft, the swing rod radially extends along the transition shaft in a protruding mode, a pin rod is arranged at the end of the swing rod, a push block is fixedly connected onto the roller support, a waist-shaped groove is formed in the push block, and the waist-shaped groove is in sliding pin joint with the pin rod; the mounting disc is provided with a first position and a second position along the self sliding direction, a second linkage mechanism is arranged among the telescopic block, the mounting disc and the rotary table, and the second linkage mechanism is assembled to enable the telescopic block to move from the station a to the station b when the mounting disc moves from the first position to the second position and enable the telescopic block to move from the station b to the station a when the mounting disc moves from the second position to the first position; a piston cylinder for driving the mounting disc to slide is arranged on the rotary table; the second linkage mechanism comprises an ejector rod fixedly connected with the telescopic block, the ejector rod is connected with a support arranged on the mounting disc in a sliding mode, a first wedge-shaped block is fixedly connected onto the ejector rod, a first wedge-shaped driving block is arranged on the support in a sliding mode, the sliding direction of the first wedge-shaped driving block is perpendicular to the axis direction of the main pipe, a second wedge-shaped block is fixedly connected onto the first wedge-shaped driving block, and a second wedge-shaped driving block is arranged on the rotary table; the first wedge-shaped block and the first wedge-shaped driving block form inclined surface transmission fit, the second wedge-shaped block and the second wedge-shaped driving block form inclined surface transmission fit, when the mounting disc slides from the second position to the first position, the second wedge-shaped driving block drives the second wedge-shaped block and the first wedge-shaped driving block to slide, and the first wedge-shaped driving block drives the first wedge-shaped block to slide again so as to drive the telescopic block to move from the station b to the station a through the ejector rod; and a second pressure spring is arranged between the first wedge-shaped driving block and the support, when the mounting disc slides from the first position to the second position, the second wedge-shaped block is gradually separated from the second wedge-shaped driving block, the first wedge-shaped driving block is gradually separated from the first wedge-shaped block under the action of the second pressure spring, and at the moment, the telescopic block can move from the station a to the station b under the extruding and pushing action of the floating roller.

The telescopic blocks are provided with two pairs, namely a first telescopic block and a second telescopic block, the first telescopic block and the second telescopic block are arranged at intervals of 90 degrees along the circumferential direction of the mounting disc, the mounting disc is also provided with a third position, and the first position is positioned between the second position and the third position; when the mounting disc is located at the first position, the second wedge-shaped block and the second wedge-shaped driving block corresponding to the first telescopic block are tightly abutted with each other, and the second wedge-shaped block and the second wedge-shaped driving block corresponding to the second telescopic block are tightly abutted with each other; when the mounting disc is located at the second position, the second wedge-shaped block and the second wedge-shaped driving block corresponding to the first telescopic block are separated from each other, and the second wedge-shaped block and the second wedge-shaped driving block corresponding to the second telescopic block are abutted against each other; when the mounting disc is located at the third position, the second wedge-shaped block and the second wedge-shaped driving block corresponding to the first telescopic block are abutted against each other, and the second wedge-shaped block and the second wedge-shaped driving block corresponding to the second telescopic block are separated from each other; the roller support is provided with an inserting block, the width of the inserting block is larger than the diameter of the roller and is consistent with the width of the telescopic block, and chamfers are arranged on the edge of one end, facing the telescopic block, of the inserting block and the edge of one end, facing the inserting block, of the sliding channel where the telescopic block is located; side guard plates are arranged on two sides of the annular roller path, a mud guard ring is arranged between the two side guard plates, and the mud guard ring is fixedly connected with the rotary arm; the jet orifice of the rotary spray head is flat, and the length direction of the jet orifice is parallel to the direction of the rotary axis of the rotary spray head.

The third linkage mechanism comprises a first chain wheel fixedly connected with the rotary table, a second chain wheel fixedly connected with the middle base and an annular chain tensioned between the first chain wheel and the second chain wheel, the first chain wheel is coaxially arranged with a rotary shaft of the rotary table, and the second chain wheel is coaxially arranged with a rotary shaft of the swing arm; a movable tensioning mechanism is arranged between the first chain wheel and the second chain wheel and is assembled to enable a chain between the first chain wheel and the second chain wheel to keep a tensioning state when the rotary table slides on the swing arm along with the sliding table; the movable tensioning mechanism comprises a sliding seat, the sliding seat is connected with the swing arm in a sliding mode along the length direction of the swing arm, the sliding seat is assembled to enable the sliding direction of the sliding seat to be always the same as that of the sliding table, and the sliding speed of the sliding seat is always 0.5 times that of the sliding table; two first guide wheels are symmetrically arranged on the sliding seat, two second guide wheels are symmetrically arranged on the swing arm, two parallel sections of chains between the first chain wheel and the second chain wheel respectively and sequentially pass around the two first guide wheels and the two second guide wheels, and all straight line sections of the chains are parallel to each other; the first guide wheel and the second guide wheel are chain wheels.

The third guide wheel is positioned on the sliding seat, the fourth guide wheel is positioned at one end, close to the second chain wheel, of the swing arm, and the fifth guide wheel is positioned at one end, far away from the second chain wheel, of the swing arm; one end of a traction rope is fixed at one end, close to the second chain wheel, of the swing arm, the traction rope sequentially rounds a third guide wheel, a fourth guide wheel and a fifth guide wheel from the end of the traction rope, and then the traction rope is fixed on the sliding table, and all straight line sections of the traction rope are parallel to each other; a screw rod is rotatably arranged on the swing arm, a nut block is arranged on the sliding seat, the screw rod and the nut block form threaded fit, and the screw rod is fixedly connected with a main shaft of the servo motor and used for driving the sliding seat to slide; and the sliding table is also provided with two sixth guide wheels which are symmetrically arranged on two sides of the first chain wheel.

The middle seat is provided with a fixed shaft which is fixedly connected with the middle seat, the second chain wheel is fixed on the fixed shaft, the swing arm is fixedly provided with a tubular shaft which is sleeved on the fixed shaft and is rotationally connected with the fixed shaft, the tubular shaft is provided with a third gear, the middle seat is provided with a motor, a main shaft of the motor is provided with a fourth gear, and the fourth gear is meshed with the third gear and is used for driving the swing arm to rotate; the traction rope is a steel wire rope; and the large arm is provided with a pitching driving motor for driving the middle seat to rotate relative to the large arm.

The baffle plate is pivoted with the side wall of the barrel cavity through a horizontally arranged pivot, two ends of the pivot penetrate through the outer side of the barrel cavity, one end of the pivot is provided with a shifting rod which is arranged in a protruding mode along the radial direction of the pivot, the side, corresponding to the feed inlet, of the barrel cavity is provided with a roller which is in blocking connection with the shifting rod, and the roller can push the shifting rod in the rotating process of the rotary barrel so that the baffle plate is switched from a vertical state to a horizontal state; the number of the rollers is the same as that of the partition plates, the rollers are respectively arranged in one-to-one correspondence with the partition plates, and the rollers are uniformly arranged at intervals along the circumferential direction of the rotary drum when viewed from the vertical direction; a first torsion spring is arranged between the pivot and the rotary cylinder, the first torsion spring is assembled into a structure that the elastic force of the first torsion spring can drive the partition board in the horizontal posture to turn over into a vertical posture, a locking mechanism is arranged at one end of the pivot, which is far away from the deflector rod, the locking mechanism is assembled into a structure that the partition board can be kept in the horizontal state when the partition board is turned over into the horizontal posture, and the locking mechanism can release the partition board when the cylinder cavity moves to the discharge hole, so that the partition board can be turned over from the horizontal posture into the vertical posture under the action of; the locking mechanism comprises a flat shaft fixedly connected with the end part of the pivot shaft and a locking block arranged on the outer wall of the cylinder cavity in a sliding manner, the locking block is provided with a round hole and a flat hole which are communicated with each other, and the locking block is provided with the following two stations along a sliding path: the circular hole is matched with the flat shaft, the pivot can freely rotate at the moment, the flat hole of the station B is matched with the flat shaft, the pivot is circumferentially locked at the moment, a third pressure spring is arranged between the locking block and the outer wall of the cylinder cavity, and the third pressure spring is assembled to enable the elastic force of the third pressure spring to drive the locking block to slide from the station A to the station B; the locking mechanism further comprises an unlocking unit which is assembled to be capable of switching all the locking blocks from the station B to the station A simultaneously when the barrel cavity rotates to a position above the discharge hole; the unlocking unit comprises an unlocking rod, the unlocking rod is connected with the outer wall of the cylinder cavity in a sliding mode along the vertical direction, bosses which are blocked and connected with the locking blocks are arranged on the unlocking rod, arched convex parts are further arranged on the unlocking rod, and arched jacking blocks are arranged on the rotation paths of the arched convex parts and push the arched convex parts in an extruding mode when the cylinder cavity rotates to the discharge port, so that the unlocking rod is driven to slide, and the bosses push the locking blocks to enable the locking blocks to be switched from the station B to the station A; and a fourth pressure spring is arranged between the unlocking rod and the outer wall of the cylinder cavity, and the fourth pressure spring is assembled to enable the elastic force of the fourth pressure spring to drive the boss on the unlocking rod to move towards the direction far away from the locking block.

The center rigid coupling of rotary drum and group material impeller has a pivot, the pivot runs through roof and bottom plate setting, the pivot rotates with the frame to be connected, is equipped with in the frame to be used for driving pivot pivoted motor.

The screening unit comprises a feeding conveyer belt and a cylindrical screen, the cylindrical screen is rotatably arranged on the rack, a rotating shaft is obliquely arranged, and one end of the feeding conveyer belt extends into the cylindrical screen; the anti-blocking mechanism is arranged at the upper end of the screen and comprises a knocking hammer, and the knocking hammer is assembled to knock the top of the screen on the barrel intermittently in the rotating process of the barrel-shaped screen; the knocking hammer comprises a hammer head and a hammer handle, the hammer handle is pivoted with the rack, a ratchet wheel is arranged on the outer wall of the end part of the cylindrical screen, the hammer handle is lapped on the ratchet wheel, and when the cylindrical screen rotates, the ratchet wheel can intermittently lift the hammer handle and then release the hammer handle; the cylindrical screen mesh is internally provided with a slag discharging groove, the slag discharging groove is positioned below a knocking area of the knocking hammer, the slag discharging groove is obliquely arranged and is used for collecting particle impurities falling by knocking and guiding the particle impurities out of the cylindrical screen mesh; the motor is arranged on the frame and used for driving the cylindrical screen to rotate, a gear ring is arranged on the outer wall of the cylindrical screen, a gear is arranged on a main shaft of the motor, and the gear is meshed with the gear ring.

And all blades of the material stirring impeller are arranged in a vortex shape.

The invention has the technical effects that:

when the swing arm swings, the third linkage mechanism can keep the rotary table in a constant posture, the sliding table slides along the swing arm in the swing process of the swing arm, the swinging action and the sliding action are superposed to realize the spraying of various paths, such as a straight path or a wave-shaped path, and further, protruding components such as anchor rods, drain pipes and the like on a slope protection surface can be flexibly avoided, the large arm does not need to move when the mechanical arm is used for spraying in a certain range, the motion process of the mechanical arm is simplified to the maximum extent, and the energy consumption of equipment is reduced;

the spray head mechanism has two states of rotary spraying and vertical spraying, mortar can be obliquely sprayed to the area below the reinforcing steel bar net in the rotary spraying state, the space below the reinforcing steel bar net is fully filled with the mortar, the surface of the mortar can be trimmed in the vertical spraying state, the spraying is more uniform, and the surface flatness of the protective slope surface is ensured.

The material gets into the screening unit and sieves, and the fine material after the screening gets into through the collecting hopper and divides the hopper, divides the hopper to sweep the material gradually and pushes away to the section of thick bamboo intracavity, because the feed inlet is the vortex form, consequently the material can not pushed into the section of thick bamboo chamber in the twinkling of an eye, but drops downwards in certain stroke in succession, just so can make the even entering of material on each layer of baffle when each layer baffle is closed one by one.

The multi-layer partition plates are used for blocking the sand ash at different heights of the cylinder cavity, so that the sand ash can flow downstream more uniformly when being sprayed, rather than being sprayed downstream by a jet of liquid, and the uniformity of guniting is effectively improved.

Drawings

Fig. 1 is a schematic diagram of foundation pit slope protection construction provided by an embodiment of the invention;

fig. 2 is a perspective view of a guniting robot provided by an embodiment of the invention;

FIG. 3 is a top view of a guniting robot provided by an embodiment of the invention;

FIG. 4 is a sectional view taken along line A of FIG. 3;

FIG. 5 is an enlarged view of section I of FIG. 4;

FIG. 6 is an enlarged partial view of II of FIG. 4;

FIG. 7 is a cross-sectional view B-B of FIG. 3;

FIG. 8 is a cross-sectional view C-C of FIG. 3;

FIG. 9 is a perspective view of a swivel head steering arrangement provided by an embodiment of the present invention;

FIG. 10 is a perspective view of a locking mechanism provided by an embodiment of the present invention;

FIG. 11 is a perspective view of a shotcrete machine provided by an embodiment of the present invention;

FIG. 12 is a cross-sectional view of a shotcrete machine provided by an embodiment of the present invention;

FIG. 13 is a top view of a feed mechanism provided by an embodiment of the present invention;

fig. 14 is a perspective view of a rotary drum provided in an embodiment of the present invention;

FIG. 15 is a top view of a rotary drum provided in an embodiment of the present invention;

fig. 16 is a sectional view B-B of fig. 15.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.

Example 1

As shown in fig. 1, a system for foundation pit slope protection construction comprises a foundation pit slope protection guniting manipulator and a guniting machine for conveying sand and ash to the foundation pit slope protection guniting manipulator; the foundation pit slope protection slurry spraying manipulator comprises a swing arm 21 mechanism and a multifunctional mortar spray head mechanism arranged at the front end of the swing arm 21 mechanism; the multifunctional mortar sprayer mechanism comprises a rotary table 22, a sliding table 21, a swing arm 21, a middle base 30 and a large arm 40, the multifunctional mortar sprayer mechanism is installed on the rotary table 22, the rotary table 22 is rotatably arranged on the sliding table 21, the sliding table 21 is slidably connected with the swing arm 21 along the length direction of the swing arm 21, the swing arm 21 is rotatably connected with the middle base 30, the middle base 30 is rotatably connected with the large arm 40, a rotating shaft between the swing arm 21 and the middle base 30 is perpendicular to a rotating shaft between the middle base 30 and the large arm 40, and the rotating shaft of the rotary table 22 is parallel to the rotating shaft between the swing arm 21 and the middle base 30; a third linkage mechanism is arranged among the rotary table 22, the swing arm 21 and the rotary arm 14, and is assembled to drive the rotary table 22 to rotate relative to the sliding table 21 when the upper swing arm 21 rotates relative to the middle base 30, the rotating angular speed of the rotary table 22 is the same as that of the swing arm 21, and the rotating direction of the rotary table 22 is opposite to that of the swing arm 21; when the swing arm 21 swings, the third linkage mechanism can keep the rotary table 22 in a constant posture, the sliding table 21 slides along the swing arm 21 in the swing process of the swing arm 21, the swing action and the sliding action are superposed to realize spraying of various paths, such as a straight path or a wave-shaped path, and further protruding components such as an anchor rod 1 and a drain pipe 3 on a slope protection surface can be flexibly avoided, the large arm 40 does not need to move when the mechanical arm is used for spraying in a certain range, the motion process of the mechanical arm is simplified to the maximum extent, and the energy consumption of equipment is reduced.

The multifunctional mortar sprayer mechanism comprises a fixed pipe 11 and a rotary pipe 12, wherein the fixed pipe 11 is fixedly connected with a mounting disc 10, the mounting disc 10 is arranged on a rotary table 22 in a sliding mode, the sliding direction of the mounting disc is parallel to the axis direction of a main pipe, the rotary pipe 12 comprises a main pipe and two branch pipes which are arranged at one end of the main pipe in a branching mode, one end, away from the branch pipes, of the main pipe is rotatably connected with the fixed pipe 11, the two branch pipes respectively extend in two opposite radial directions of the main pipe, a rotary sprayer 13 is arranged at the end portion of each branch pipe, the rotary sprayer 13 is rotatably connected with the branch pipes, the rotating shaft of each branch pipe is parallel to the length direction of the corresponding branch pipe, and the spraying direction of the rotary sprayer 13 is; the rotary sprayer 13 is mounted to move between: in the first station, the spraying direction of the rotary spray head 13 and the axis of the main pipe form an included angle, and the reaction force generated when the rotary spray head 13 sprays mortar under the first station can push the rotary pipe 12 to rotate; in the second station, the spraying direction of the rotary spray head 13 is parallel to the axial direction of the main pipe, and the rotary pipe 12 is static relative to the fixed pipe 11 in the second station; the device also comprises a switching mechanism for driving the rotary spray head 13 to switch between a first station and a second station; the spray head mechanism has two states of rotary spraying and vertical spraying, mortar can be obliquely sprayed to the area below the reinforcing mesh 2 in the rotary spraying state, the space below the reinforcing mesh 2 is fully filled with the mortar, the surface of the mortar can be trimmed in the vertical spraying state, the spraying is more uniform, and the surface flatness of the slope protection surface is ensured.

As shown in fig. 11 and 12, the shotcrete machine includes a feeding mechanism and a material homogenizing mechanism, the feeding mechanism includes a sieving unit, a collecting hopper 60, and a distributing hopper 70, the sieving unit is used for filtering sand ash, the collecting hopper 60 is located below the sieving unit, the distributing hopper 70 is located below the collecting hopper 60, the receiving hopper is used for collecting sand ash sieved by the sieving unit and guiding the sand ash into the distributing hopper 70, and a material shifting impeller 71 is arranged in the distributing hopper 70; the aggregate bin 60 guides the sand and ash to between two adjacent blades of the kick-off impeller 71; the material homogenizing mechanism comprises a rotary drum 80, the rotary drum 80 is rotatably arranged on a rack along a vertical axis, a material stirring impeller 71 is synchronously and rotatably connected with the rotary drum 80, the rotary drum 80 is uniformly provided with a plurality of independent drum cavities 801 at intervals along the circumferential direction, each drum cavity 801 and the area between each adjacent blade of the material stirring impeller 71 are arranged in a one-to-one correspondence manner, the upper end and the lower end of the rotary drum 80 are respectively provided with a top plate 81 and a bottom plate 82 fixedly connected with the rack, a material distributing hopper 70 is positioned above the top plate 81, the top surface and the bottom surface of the rotary drum 80 are respectively connected with the top plate 81 and the bottom plate 82 in a sliding and sealing manner, the top plate 81 is provided with a feeding hole 812, the bottom plate 82 is provided with a discharging hole 821, and the feeding hole; as shown in fig. 13, the feed inlet 812 is in a vortex shape, and the feed inlet 812 is gradually away from the center of the stirring impeller 71 from one end to the other end; as shown in fig. 12, 14 and 15, a plurality of partition plates 83 are arranged in the cylinder cavity 801 at intervals along the vertical direction, the partition plates 83 have two postures of vertical and horizontal, when the partition plates 83 are horizontal, the cylinder cavity 801 can be divided into a plurality of sub-cavities which are vertically arranged, and when the partition plates 83 are vertical, the sub-cavities can be communicated with each other to form a whole; the rotary drum 80 is provided with a partition 83 control mechanism, the partition 83 control mechanism is assembled to be capable of sequentially driving each partition 83 from bottom to top to be switched from a vertical state to a horizontal state when the drum cavity 801 passes below the feed port 812, and capable of driving each partition 83 to be simultaneously switched from the horizontal state to the vertical state when the drum cavity 801 passes above the discharge port 821; the materials enter the screening unit for screening, the screened fine materials enter the material distribution hopper 70 through the material collection hopper 60, the material distribution hopper 70 gradually sweeps and pushes the materials into the cylinder cavity 801, and the materials cannot be instantly pushed into the cylinder cavity 801 due to the fact that the feeding hole 812 is in a vortex shape, and continuously drop downwards in a certain stroke, so that the materials can uniformly enter each layer of partition plate 83 when each layer of partition plate 83 is closed one by one.

A first air duct 811 is formed in the top plate 81, one end of the first air duct 811 is communicated with the air inlet pipe, and the other end of the first air duct 811 is arranged opposite to the discharge port 821 in the vertical direction; a discharge pipe 822 is connected to the discharge port 821, a second air duct 823 is arranged on the pipe wall of the discharge pipe 822 along the tangential direction of the pipe wall, one end of the second air duct 823 is communicated with the inner cavity of the discharge pipe 822, and the other end of the second air duct 823 is communicated with an air inlet pipe; fixed pipe 11 passes through the pipeline and communicates with discharging pipe 822, still has the inlet tube on the fixed pipe 11. According to the invention, the sand ash is blocked at different heights of the cylinder cavity 801 by the multilayer partition plates 83, so that the sand ash can flow downstream more uniformly during spraying, rather than being sprayed downstream by a stock of brains, and the spraying uniformity is effectively improved.

Specifically, as shown in fig. 2, 4, 5, 8 and 9, the foundation pit slope protection guniting manipulator further comprises a rotary arm 14, the rotary arm 14 is fixedly connected with a rotary pipe 12, and a rotary spray head 13 is rotatably connected with the rotary arm 14 through a bearing; the switching mechanism comprises a floating roller 15 arranged on the rotary arm 14, the floating roller 15 is rotatably arranged on a roller support 151, the axis of the floating roller 15 is arranged along the radial direction of the main pipe, the roller support 151 is arranged on the rotary arm 14 in a sliding mode, the sliding direction of the roller support 151 is parallel to the axis direction of the main pipe, and an annular roller path matched with the floating roller 15 is arranged on the mounting disc 10; a first pressure spring 152 is arranged between the roller bracket 151 and the rotary arm 14, and the first pressure spring 152 is assembled so that the elasticity thereof can drive the roller bracket 151 to slide towards the direction close to the environmental raceway; the annular roller path is provided with a telescopic block 102, the telescopic block 102 is in sliding connection with the mounting disc 10, the telescopic block 102 is provided with a station a and a station b, when the telescopic block 102 is at the station a, the telescopic block 102 is flush with the annular roller path, at the moment, the floating roller 15 can continuously walk along the annular roller path, when the telescopic block 102 is at the station b, the telescopic block 102 slides towards the direction far away from the floating roller 15 and forms a pit on the annular roller path, and at the moment, the floating roller 15 can sink into the pit under the action of the first pressure spring 152; a first linkage mechanism is arranged between the roller bracket 151 and the rotary spray head 13 and is assembled to enable the rotary spray head 13 to be kept at a first station when the floating roller 15 runs on the annular roller path, and to enable the rotary spray head 13 at the first station to be switched to a second station when the floating roller 15 is sunk into a pit; the invention utilizes the matching of the floating roller 15 and the telescopic block 102 to realize the automatic locking of the rotary spray head 13 on one hand and drive the rotary spray head 13 to automatically adjust the direction on the other hand, when the rotary spray head 13 is locked, the vertical spraying state can be switched, the structural design is ingenious, and the equipment cost is low.

Specifically, as shown in fig. 5, 8, and 9, the first linkage mechanism includes a transition shaft 16 rotatably connected to the rotary arm 14, the transition shaft 16 is fixedly connected to a first gear 161, the rotary nozzle 13 is fixedly connected to a second gear 131, the first gear 161 is engaged with the second gear 131, the transition shaft 16 is further fixedly connected to a swing rod 162, the swing rod 162 radially protrudes along the transition shaft 16, a pin rod 163 is disposed at an end of the swing rod 162, the roller bracket 151 is fixedly connected to a push block 153, a waist-shaped groove is disposed on the push block 153, and the waist-shaped groove is slidably pivoted with the pin rod 163; preferably, the mounting plate 10 has a first position and a second position along the sliding direction thereof, and a second linkage mechanism is provided among the telescopic block 102, the mounting plate 10 and the turntable 22, and is configured to enable the telescopic block 102 to move from the station a to the station b when the mounting plate 10 moves from the first position to the second position, and enable the telescopic block 102 to move from the station b to the station a when the mounting plate 10 moves from the second position to the first position; a piston cylinder for driving the mounting disc 10 to slide is arranged on the rotary table 22; as shown in fig. 6, 7 and 10, the second linkage mechanism includes a top rod 103 fixedly connected to the telescopic block 102, the top rod 103 is slidably connected to a support provided on the mounting plate 10, a first wedge block 17 is fixedly connected to the top rod 103, a first wedge driving block 171 is slidably provided on the support, a sliding direction of the first wedge driving block 171 is perpendicular to an axial direction of the main pipe, a second wedge block 172 is fixedly connected to the first wedge driving block 171, and a second wedge driving block 221 is provided on the rotary table 22; the first wedge block 17 and the first wedge driving block 171 form an inclined surface transmission fit, the second wedge block 172 and the second wedge driving block 221 form an inclined surface transmission fit, when the mounting plate 10 slides from the second position to the first position, the second wedge driving block drives the second wedge block 172 and the first wedge driving block 171 to slide, the first wedge driving block 171 drives the first wedge block 17 to slide, and then the telescopic block 102 is driven by the ejector rod 103 to move from the station b to the station a; a second pressure spring is arranged between the first wedge-shaped driving block 171 and the support, when the mounting disc 10 slides from the first position to the second position, the second wedge-shaped block 172 gradually disengages from the second wedge-shaped driving block 221, the first wedge-shaped driving block 171 gradually disengages from the first wedge-shaped block 17 under the action of the second pressure spring, and at this time, the telescopic block 102 can move from the station a to the station b under the squeezing and pushing action of the floating roller 15.

Furthermore, two pairs of telescopic blocks 102 are arranged, namely a first telescopic block 102 and a second telescopic block 102, the first telescopic block 102 and the second telescopic block 102 are arranged at intervals of 90 degrees along the circumferential direction of the mounting disc 10, the mounting disc 10 further has a third position, and the first position is located between the second position and the third position; when the mounting plate 10 is located at the first position, the second wedge-shaped block 172 and the second wedge-shaped driving block 221 corresponding to the first telescopic block 102 are abutted against each other, and the second wedge-shaped block 172 and the second wedge-shaped driving block 221 corresponding to the second telescopic block 102 are abutted against each other; when the mounting plate 10 is located at the second position, the second wedge-shaped block 172 and the second wedge-shaped driving block 221 corresponding to the first telescopic block 102 are separated from each other, and the second wedge-shaped block 172 and the second wedge-shaped driving block 221 corresponding to the second telescopic block 102 are abutted against each other; when the mounting plate 10 is located at the third position, the second wedge-shaped block 172 and the second wedge-shaped driving block 221 corresponding to the first telescopic block 102 are abutted against each other, and the second wedge-shaped block 172 and the second wedge-shaped driving block 221 corresponding to the second telescopic block 102 are separated from each other; according to the invention, the switching of the states of the rotary spray heads is realized by utilizing the up-and-down floating of the mounting disc 10, as shown in FIGS. 6 and 7, when the mounting disc 10 is at the position shown in FIGS. 6 and 7, the first wedge-shaped block 17 is pressed, and the telescopic block 102 cannot move upwards, so that the floating roller can continuously roll along the annular roller path; when the mounting plate 10 moves upward relative to the turntable 22, the second wedge block 172 in fig. 6 is disengaged from the second wedge drive block 221, while the second wedge block 172 in fig. 7 is not disengaged from the second wedge drive block 221, thereby releasing one set of the telescopic blocks 102; conversely, when the mounting plate 10 is lowered relative to the turntable 22, the second wedge block 172 in fig. 7 is separated from the second wedge drive block 221, while the second wedge block 172 in fig. 6 is not separated from the second wedge drive block 221, so that the other set of telescopic blocks 102 is released; therefore, the rotary spray head 13 is fixed in two different directions, and the requirements of different spraying processes are met.

As shown in fig. 8, the roller bracket 151 is provided with an insertion block 154, the width of the insertion block 154 is larger than the diameter of the roller and is the same as the width of the telescopic block 102, and the edge of the insertion block 154 facing one end of the telescopic block 102 and the edge of the sliding channel where the telescopic block 102 is located facing one end of the insertion block 154 are both provided with chamfers; side guard plates 104 are arranged on two sides of the annular roller path, a mud guard ring 141 is arranged between the two side guard plates 104, and the mud guard ring 141 is fixedly connected with the rotary arm 14; the ejection opening of the rotary head 13 is flat, and the length direction of the ejection opening is parallel to the direction of the rotation axis of the rotary head 13. The insertion block 154 can be tightly inserted into the concave pit when the floating roller 15 is sunk into the concave pit to prevent the floating roller 15 from shaking in the concave pit. The flat nozzle can spray the mortar outwards in a fan shape, and the spraying area is wide and the spraying is more uniform.

Specifically, as shown in fig. 3, the third link mechanism includes a first sprocket 23 fixedly connected to the turntable 22, a second sprocket 24 fixedly connected to the middle base 30, and an endless chain 25 tensioned between the first sprocket 23 and the second sprocket 24, wherein the first sprocket 23 is coaxially disposed with a rotating shaft of the turntable 22, and the second sprocket 24 is coaxially disposed with a rotating shaft of the swing arm 21; a movable tensioning mechanism is arranged between the first chain wheel 23 and the second chain wheel 24 and is assembled to enable the chain between the first chain wheel 23 and the second chain wheel 24 to be kept in a tensioned state when the rotary table 22 slides on the swing arm 21 along with the sliding table 21; the movable tensioning mechanism comprises a sliding seat 26, the sliding seat 26 is connected with the swing arm 21 in a sliding mode along the length direction of the swing arm 21, the sliding seat 26 is assembled to enable the sliding direction of the sliding seat 26 to be always the same as that of the sliding table 21, and the sliding speed of the sliding seat 26 is always 0.5 times that of the sliding table 21; two first guide wheels 261 are symmetrically arranged on the sliding seat 26, two second guide wheels 203 are symmetrically arranged on the swing arm 21, two parallel chain sections between the first chain wheel 23 and the second chain wheel 24 respectively and sequentially pass around the two first guide wheels 261 and the second guide wheels 203, and all straight line sections of the chains are parallel to each other; first guide wheel 261 and second guide wheel 203 are both sprockets. During the swing of swing arm 21, since second sprocket 24 is fixed relative to middle seat 30, second sprocket 24 rotates relative to swing arm 21, and thus first sprocket 23 rotates relative to swing arm 21, and the angle of rotation depends on the angle of swing arm 21, and the direction of rotation is opposite to the direction of swing arm 21, so first sprocket 23 does not actually rotate relative to the ground. In order to solve the problem of autorotation of the rotary table 22 and consider the problem of sliding of the rotary table 22 along with the sliding table 21, and ensure that the third linkage mechanism can be always effective in the sliding process of the rotary table 22, the chain tensioning mechanism is arranged and can shorten the chain along with the sliding of the rotary table 22, wherein the shortening actually means increasing the folding area of the chain, so that the span of the chain is shortened on the whole.

Further, the device also comprises a traction rope 28, and a third guide wheel 262, a fourth guide wheel 204 and a fifth guide wheel 205 for guiding the traction rope 28, wherein the third guide wheel 262 is located on the slide seat 26, the fourth guide wheel 204 is located at one end of the swing arm 21 close to the second chain wheel 24, and the fifth guide wheel 205 is located at one end of the swing arm 21 far from the second chain wheel 24; one end of the pulling rope 28 is fixed at one end of the swing arm 21 close to the second chain wheel 24, the pulling rope 28 sequentially bypasses the third guide wheel 262, the fourth guide wheel 204 and the fifth guide wheel 205 from the end, and then is fixed on the sliding table 21, and all straight line sections of the pulling rope 28 are parallel to each other; a screw 27 is rotatably arranged on the swing arm 21, a nut block is arranged on the sliding seat 26, the screw 27 and the nut block form threaded fit, and the screw 27 is fixedly connected with a main shaft of a servo motor and used for driving the sliding seat 26 to slide; the sliding table 21 is further provided with two sixth guide wheels 206, and the two sixth guide wheels 206 are symmetrically arranged on two sides of the first chain wheel 23. The invention not only utilizes the sliding seat 26 to solve the problem of chain tightening, but also utilizes a traction rope 28 to be matched with the chain to realize the bidirectional traction of the sliding seat 26 to the sliding table 21, thereby solving the problem of proportional movement of the sliding table 21 and the sliding seat 26.

Preferably, as shown in fig. 4, a fixed shaft 301 is arranged on the middle base 30, the fixed shaft 301 is fixedly connected with the middle base 30, the second chain wheel 24 is fixed on the fixed shaft 301, a pipe shaft 201 is fixedly arranged on the swing arm 21, the pipe shaft 201 is sleeved on the fixed shaft 301 and is rotatably connected with the fixed shaft 301, a third gear 202 is arranged on the pipe shaft 201, a motor is arranged on the middle base 30, a fourth gear 302 is arranged on a main shaft of the motor, and the fourth gear 302 is engaged with the third gear 202 and is used for driving the swing arm 21 to rotate; the traction rope 28 is a steel wire rope; the large arm 40 is provided with a pitching driving motor for driving the middle seat 30 to rotate relative to the large arm 40.

Specifically, as shown in fig. 14 and 15, the partition 83 is pivotally connected to the sidewall of the cylindrical cavity 801 through a horizontally disposed pivot 831, two ends of the pivot 831 penetrate through the outside of the cylindrical cavity 801, one end of the pivot 831 is provided with a shift lever 832 radially protruding along the pivot 831, a roller 85 blocking against the shift lever 832 is disposed at the side of the stroke of the cylindrical cavity 801 corresponding to the feed port 812, and the roller can push the shift lever 832 to switch the partition 83 from a vertical state to a horizontal state in the rotation process of the rotary cylinder 80; the number of the rollers is the same as that of the partition plates 83, the rollers are respectively arranged in one-to-one correspondence with the partition plates 83, and the rollers are uniformly arranged at intervals along the circumferential direction of the rotary drum 80 when viewed from the vertical direction; a first torsion spring 833 is arranged between the pivot 831 and the rotary cylinder 80, the first torsion spring 833 is assembled to enable the partition 83 in the horizontal posture to overturn to the vertical posture under the action of the elastic force of the first torsion spring 833, a locking mechanism 84 is arranged at one end, away from the deflector rod 832, of the pivot 831, the locking mechanism 84 is assembled to enable the partition 83 to be kept in the horizontal state when the partition 83 overturns to the horizontal posture, and the locking mechanism 84 can release the partition 83 to enable the partition 83 to overturn from the horizontal posture to the vertical posture under the action of the first torsion spring 833 when the cylinder cavity 801 moves to the discharge hole 821; preferably, as shown in fig. 6, the locking mechanism 84 includes a flat shaft 834 fixedly connected to an end of the pivot 831, and a locking block 841 slidably disposed on an outer wall of the cylindrical cavity 801, the locking block 841 is provided with a circular hole 842 and a flat hole 843 penetrating each other, and the locking block 841 has the following two stations along a sliding path: in the working position A, the circular hole 842 is matched with the flat shaft 834, the pivot 831 can rotate freely at the moment, the flat hole 843 in the working position B is matched with the flat shaft 834, the pivot 831 is locked in the circumferential direction at the moment, a third pressure spring 844 is arranged between the locking block 841 and the outer wall of the cylinder cavity 801, and the third pressure spring 844 is assembled so that the elastic force of the third pressure spring 844 can drive the locking block 841 to slide from the working position A to the working position B; the locking mechanism 84 further includes an unlocking unit that is equipped to be able to switch all the locking blocks 841 from station B to station a simultaneously when the cartridge chamber 801 is rotated above the discharge port 821; the unlocking unit comprises an unlocking rod 845, the unlocking rod 845 is connected with the outer wall of the cylinder cavity 801 in a sliding mode along the vertical direction, bosses 849 which are blocked and connected with the locking blocks 841 are arranged on the unlocking rod 845, arched convex portions 847 are further arranged on the unlocking rod 845, arched top blocks 848 are arranged on the rotation paths of the arched convex portions 847, when the cylinder cavity 801 rotates to the discharge hole 821, the arched convex portions 847 are pushed by the arched top blocks 848, the unlocking rod 845 is driven to slide, and at the moment, the bosses 849 push the locking blocks 841 to enable the locking blocks 841 to be switched from the station B to the station A; a fourth pressure spring 846 is arranged between the unlocking rod 845 and the outer wall of the cylinder cavity 801, and the fourth pressure spring 846 is assembled so that the elastic force of the fourth pressure spring 846 can drive a boss 849 on the unlocking rod 845 to move towards the direction far away from the locking block 841.

Preferably, a rotating shaft is fixedly connected to the centers of the rotary drum 80 and the material poking impeller 71, the rotating shaft penetrates through the top plate 81 and the bottom plate 82, the rotating shaft is rotatably connected with the frame, and a motor for driving the rotating shaft to rotate is arranged on the frame.

The screening unit comprises a feeding conveyer belt 51 and a cylindrical screen 50, the cylindrical screen 50 is rotatably arranged on the rack, a rotating shaft is obliquely arranged, and one end of the feeding conveyer belt 51 extends into the cylindrical screen 50; the upper end of the screen is provided with an anti-blocking mechanism, the anti-blocking mechanism comprises a knocking hammer 52, and the knocking hammer 52 is assembled to intermittently knock the top of the screen on the cylinder in the rotating process of the cylindrical screen 50; the knocking hammer 52 comprises a hammer head 521 and a hammer handle 522, the hammer handle 522 is pivoted with the frame, a ratchet wheel 53 is arranged on the outer wall of the end part of the cylindrical screen 50, the hammer handle 522 is lapped on the ratchet wheel 53, and when the cylindrical screen 50 rotates, the ratchet wheel 53 can intermittently lift the hammer handle 522 and then release the hammer handle; a slag discharge groove 54 is further formed in the cylindrical screen 50, the slag discharge groove 54 is located below the knocking area of the knocking hammer 52, the slag discharge groove 54 is obliquely arranged, and the slag discharge groove 54 is used for collecting particle impurities falling after knocking and guiding the particle impurities out of the cylindrical screen 50; the motor used for driving the cylindrical screen 50 to rotate is arranged on the rack, a gear ring is arranged on the outer wall of the cylindrical screen 50, a gear is arranged on a main shaft of the motor, and the gear is meshed with the gear ring.

The blades of the stirring impeller 71 are arranged in a vortex shape.

Example 2

As shown in fig. 1, a foundation pit slope guniting method comprises the following steps:

step 1: firstly, the spray head is inclined at a certain angle relative to the slope protection surface, and a rotary path is adopted for spraying, so that cement mortar is fully filled in the space below the reinforcing mesh 2;

step 2: when the thickness of the cement mortar is flush with the thickness of the reinforcing mesh 2, the spray head is perpendicular to the slope protection surface and is sprayed along a straight path;

in the steps 1 and 2, the foundation pit slope protection guniting manipulator in the embodiment 1 is adopted for spraying construction;

in the steps 1 and 2, the shotcrete machine described in embodiment 1 is used for supplying sand and ash to the foundation pit slope protection shotcrete manipulator, and the concrete steps are as follows:

step a: screening the sand ash to filter out coarse particle impurities;

step b: the screened sand ash is guided into a material distribution hopper 70, and a material poking impeller 71 is arranged in the material distribution hopper 70; the sand and ash are guided to the position between two adjacent blades of the material stirring impeller 71; a top plate 81 is arranged below the material distributing hopper 70, a rotary drum 80 is arranged below the top plate 81, the rotary drum 80 is rotatably arranged on the rack along a vertical axis, the material shifting impeller 71 is synchronously and rotatably connected with the rotary drum 80, a plurality of independent drum cavities 801 are uniformly arranged at intervals along the circumferential direction of the rotary drum 80, the areas between the adjacent blades of the material shifting impeller 71 and each drum cavity 801 are arranged in a one-to-one correspondence manner, and a feeding hole 812 is arranged on the top plate 81; the feed inlet 812 is in a vortex line shape, and the feed inlet 812 is gradually far away from the center of the material stirring impeller 71 from one end to the other end;

step c: sweeping and pushing the sand and ash in the material distributing hopper 70 into a cylinder cavity 801 of the rotary cylinder 80; a plurality of partition plates 83 are arranged in the barrel cavity 801 at intervals along the vertical direction, the partition plates 83 have two postures of vertical and horizontal, when the partition plates 83 are horizontal, the barrel cavity 801 can be divided into a plurality of sub-cavities which are vertically arranged, and when the partition plates 83 are vertical, the sub-cavities can be communicated with each other into a whole; the rotary drum 80 is provided with a partition plate 83 control mechanism, and the partition plate 83 control mechanism is assembled to be capable of sequentially driving each partition plate 83 from bottom to top to be switched from a vertical state to a horizontal state when the drum cavity 801 passes below the feed port 812; the sand ash is swept to the feed inlet 812 by the material sweeping impeller 71 in the rotating process, one of the cylinder cavities 801 just passes below the feed inlet 812 in the sweeping process of the material sweeping impeller 71 over the feed inlet 812, and the partition plates 83 in the cylinder cavity 801 are closed from bottom to top in sequence, so that the materials are uniformly retained on each layer of partition plates 83; a bottom plate 82 is arranged below the rotary drum 80, a discharge hole 821 is arranged on the bottom plate 82, and a feed hole 812 and the discharge hole 821 are respectively positioned at two sides of the rotary drum 80 which are far away from each other when viewed in the vertical direction;

step d: when the barrel cavity 801 filled with the sand and the ash rotates to the position above the discharge port 821, the partition 83 control mechanism drives each partition 83 to be switched from a horizontal state to a vertical state simultaneously; a first air duct 811 is arranged on the top plate 81 above the discharge port 821, one end of the first air duct 811 is communicated with the air inlet pipe, and the other end of the first air duct 811 is arranged opposite to the discharge port 821 in the vertical direction; after each partition plate 83 is turned to be in a vertical posture, each layer of sand and ash gushes out from the discharge port 821 under the action of wind power and enters the discharge pipe 822 connected below the discharge port 821, a second air duct 823 is arranged on the pipe wall of the discharge pipe 822 along the tangential direction of the pipe wall, one end of the second air duct 823 is communicated with the inner cavity of the discharge pipe 822, the other end of the second air duct 823 is communicated with the air inlet pipe, and the sand and ash are disturbed by the wind power of the second air duct 823 in the discharge pipe 822 and are ejected outwards in a; fixed pipe 11 passes through the pipeline and communicates with discharging pipe 822, still has the inlet tube on the fixed pipe 11.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.

Claims

1. The utility model provides a system is used in foundation ditch bank protection construction which characterized in that: the device comprises a foundation pit slope protection guniting manipulator and a guniting machine for conveying sand and ash to the foundation pit slope protection guniting manipulator; the foundation pit slope protection guniting manipulator comprises a swing arm (21) mechanism and a multifunctional mortar sprayer mechanism arranged at the front end of the swing arm (21) mechanism; the multifunctional mortar sprayer is characterized in that the swing arm (21) mechanism comprises a rotary table (22), a sliding table (21), a swing arm (21), a middle seat (30) and a large arm (40), the multifunctional mortar sprayer mechanism is installed on the rotary table (22), the rotary table (22) is rotatably arranged on the sliding table (21), the sliding table (21) is slidably connected with the swing arm (21) along the length direction of the swing arm (21), the swing arm (21) is rotatably connected with the middle seat (30), the middle seat (30) is rotatably connected with the large arm (40), a rotating shaft between the swing arm (21) and the middle seat (30) is mutually vertical to a rotating shaft between the middle seat (30) and the large arm (40), and the rotating shaft of the rotary table (22) is parallel to the rotating shaft between the swing arm (21) and the middle seat (30); a third linkage mechanism is arranged among the rotary table (22), the swing arm (21) and the rotary arm (14), the third linkage mechanism is assembled to drive the rotary table (22) to rotate relative to the sliding table (21) when the upper swing arm (21) rotates relative to the middle base (30), the rotating angular speed of the rotary table (22) is the same as that of the swing arm (21), and the rotating direction of the rotary table (22) is opposite to that of the swing arm (21); the multifunctional mortar sprayer mechanism comprises a fixed pipe (11) and a rotary pipe (12), the fixed pipe (11) is fixedly connected with a mounting disc (10), the mounting disc (10) is arranged on a rotary table (22) in a sliding mode, the sliding direction of the mounting disc is parallel to the axial direction of a main pipe, the rotary pipe (12) comprises a main pipe and two branch pipes which are arranged at one end of the main pipe in a branching mode, one end, away from the branch pipes, of the main pipe is rotatably connected with the fixed pipe (11), the two branch pipes extend in two opposite radial directions of the main pipe respectively, a rotary sprayer (13) is arranged at the end portion of each branch pipe, the rotary sprayer (13) is rotatably connected with the branch pipes, a rotating shaft of the rotary sprayer is parallel to the length direction of the branch pipes, and the spraying direction of the rotary sprayer (13) is perpendicular to the; the rotary sprayer (13) is assembled to move between the following two stations: in the first station, the spraying direction of the rotary spray head (13) and the axis of the main pipe form an included angle, and the reaction force generated when the rotary spray head (13) sprays mortar under the first station can push the rotary pipe (12) to rotate; in the second station, the spraying direction of the rotary spray head (13) is parallel to the axial direction of the main pipe, and the rotary pipe (12) is static relative to the fixed pipe (11) in the second station; the device also comprises a switching mechanism for driving the rotary spray head (13) to switch between the first station and the second station; the slurry spraying machine comprises a feeding mechanism and a material homogenizing mechanism, the feeding mechanism comprises a screening unit, a collecting hopper (60) and a distributing hopper (70), the screening unit is used for filtering sand ash, the collecting hopper (60) is positioned below the screening unit, the distributing hopper (70) is positioned below the collecting hopper (60), a receiving hopper is used for collecting the sand ash screened by the screening unit and guiding the sand ash to the distributing hopper (70), and a material shifting impeller (71) is arranged in the distributing hopper (70); the aggregate bin (60) guides the sand and the ash to the position between two adjacent blades of the material poking impeller (71); the material homogenizing mechanism comprises a rotary drum (80), the rotary drum (80) is rotatably arranged on a rack along a vertical axis, a material stirring impeller (71) is synchronously and rotatably connected with the rotary drum (80), the rotary drum (80) is uniformly provided with a plurality of independent drum cavities (801) at intervals along the circumferential direction, each drum cavity (801) and an area between each adjacent blade of the material stirring impeller (71) are correspondingly arranged one by one, the upper end and the lower end of the rotary drum (80) are respectively provided with a top plate (81) and a bottom plate (82) fixedly connected with the rack, a material distributing hopper (70) is positioned above the top plate (81), the top surface and the bottom surface of the rotary drum (80) are respectively in sliding sealing connection with the top plate (81) and the bottom plate (82), the top plate (81) is provided with a feeding hole (812), the bottom plate (82) is provided with a discharging hole (821), and the feeding hole (812) and the discharging hole (821) are respectively positioned at two sides of the rotary cylinder (80) which are far away from each other when viewed in the vertical direction; the feed inlet (812) is in a vortex line shape, and the feed inlet (812) is gradually far away from the center of the material stirring impeller (71) from one end to the other end; a plurality of partition plates (83) are arranged in the barrel cavity (801) at intervals along the vertical direction, the partition plates (83) have two postures of being vertical and horizontal, when the partition plates (83) are horizontal, the barrel cavity (801) can be divided into a plurality of sub-cavities which are vertically arranged, and when the partition plates (83) are vertical, the sub-cavities can be communicated with each other into a whole; the rotary drum (80) is provided with a partition plate (83) control mechanism, the partition plate (83) control mechanism is assembled to be capable of sequentially driving each partition plate (83) from bottom to top to be switched from a vertical state to a horizontal state when the drum cavity (801) passes below the feed port (812), and driving each partition plate (83) to be simultaneously switched from the horizontal state to the vertical state when the drum cavity (801) passes above the discharge port (821); a first air duct (811) is formed in the top plate (81), one end of the first air duct (811) is communicated with the air inlet pipe, and the other end of the first air duct is arranged opposite to the discharge hole (821) along the vertical direction; a discharge pipe (822) is connected to the discharge hole (821), a second air duct (823) is arranged on the pipe wall of the discharge pipe (822) along the tangential direction of the pipe wall, one end of the second air duct (823) is communicated with the inner cavity of the discharge pipe (822), and the other end of the second air duct is communicated with an air inlet pipe; fixed pipe (11) are through pipeline and discharging pipe (822) intercommunication, still link on fixed pipe (11) and have the inlet tube.

2. The system for foundation pit slope protection construction according to claim 1, characterized in that: the foundation pit slope protection guniting manipulator further comprises a rotary arm (14), the rotary arm (14) is fixedly connected with the rotary pipe (12), and the rotary spray head (13) is rotatably connected with the rotary arm (14) through a bearing; the switching mechanism comprises a floating roller (15) arranged on the rotary arm (14), the floating roller (15) is rotatably arranged on a roller support (151), the axis of the floating roller (15) is arranged along the radial direction of the main pipe, the roller support (151) is arranged on the rotary arm (14) in a sliding mode, the sliding direction of the roller support is parallel to the axis direction of the main pipe, and an annular roller path matched with the floating roller (15) is arranged on the mounting disc (10); a first pressure spring (152) is arranged between the roller bracket (151) and the rotary arm (14), and the first pressure spring (152) is assembled to enable the elastic force of the first pressure spring to drive the roller bracket (151) to slide towards the direction close to the environmental raceway; the annular roller path is provided with a telescopic block (102), the telescopic block (102) is in sliding connection with the mounting disc (10), the telescopic block (102) is provided with a station a and a station b, when the telescopic block (102) is located at the station a, the telescopic block (102) is flush with the annular roller path, the floating roller (15) can continuously walk along the annular roller path, when the telescopic block (102) is located at the station b, the telescopic block (102) slides towards the direction far away from the floating roller (15) and forms a pit on the annular roller path, and at the moment, the floating roller (15) can sink into the pit under the action of the first pressure spring (152); a first linkage mechanism is arranged between the roller bracket (151) and the rotary spray head (13), and is assembled to enable the rotary spray head (13) to be kept at a first station when the floating roller (15) travels on the annular raceway, and to enable the rotary spray head (13) at the first station to be switched to a second station when the floating roller (15) is sunk into a pit; the first linkage mechanism comprises a transition shaft (16) rotatably connected with a rotary arm (14), a first gear (161) is fixedly connected onto the transition shaft (16), a second gear (131) is fixedly connected onto a rotary spray head (13), the first gear (161) is meshed with the second gear (131), a swing rod (162) is further fixedly connected onto the transition shaft (16), the swing rod (162) radially protrudes and extends along the transition shaft (16), a pin rod (163) is arranged at the end part of the swing rod (162), a push block (153) is fixedly connected onto the roller bracket (151), a waist-shaped groove is formed in the push block (153), and the waist-shaped groove is slidably pivoted with the pin rod (163); the mounting disc (10) has a first position and a second position along the self sliding direction, a second linkage mechanism is arranged among the telescopic block (102), the mounting disc (10) and the rotary table (22), the second linkage mechanism is assembled to enable the telescopic block (102) to move from the station a to the station b when the mounting disc (10) moves from the first position to the second position, and enable the telescopic block (102) to move from the station b to the station a when the mounting disc (10) moves from the second position to the first position; a piston cylinder for driving the mounting disc (10) to slide is arranged on the rotary table (22); the second linkage mechanism comprises a push rod (103) fixedly connected with a telescopic block (102), the push rod (103) is in sliding connection with a support arranged on the mounting disc (10), a first wedge-shaped block (17) is fixedly connected to the push rod (103), a first wedge-shaped driving block (171) is arranged on the support in a sliding mode, the sliding direction of the first wedge-shaped driving block (171) is perpendicular to the axial direction of the main pipe, a second wedge-shaped block (172) is fixedly connected to the first wedge-shaped driving block (171), and a second wedge-shaped driving block (221) is arranged on the rotary table (22); the first wedge-shaped block (17) and the first wedge-shaped driving block (171) form an inclined surface transmission fit, the second wedge-shaped block (172) and the second wedge-shaped driving block (221) form an inclined surface transmission fit, when the mounting disc (10) slides from the second position to the first position, the second wedge-shaped driving block drives the second wedge-shaped block (172) and the first wedge-shaped driving block (171) to slide, and the first wedge-shaped driving block (171) drives the first wedge-shaped block (17) to slide so as to drive the telescopic block (102) to move from the station b to the station a through the ejector rod (103); a second pressure spring is arranged between the first wedge-shaped driving block (171) and the support, when the mounting disc (10) slides from the first position to the second position, the second wedge-shaped block (172) is gradually separated from the second wedge-shaped driving block (221), the first wedge-shaped driving block (171) is gradually separated from the first wedge-shaped block (17) under the action of the second pressure spring, and at the moment, the telescopic block (102) can move from the station a to the station b under the squeezing and pushing action of the floating roller (15).

3. The system for foundation pit slope protection construction according to claim 2, characterized in that: the telescopic blocks (102) are provided with two pairs, namely a first telescopic block (102) and a second telescopic block (102), the first telescopic block (102) and the second telescopic block (102) are arranged at intervals of 90 degrees along the circumferential direction of the mounting disc (10), the mounting disc (10) is also provided with a third position, and the first position is positioned between the second position and the third position; when the mounting disc (10) is located at the first position, the second wedge-shaped block (172) and the second wedge-shaped driving block (221) corresponding to the first telescopic block (102) are abutted against each other, and the second wedge-shaped block (172) and the second wedge-shaped driving block (221) corresponding to the second telescopic block (102) are abutted against each other; when the mounting disc (10) is located at the second position, the second wedge-shaped block (172) and the second wedge-shaped driving block (221) corresponding to the first telescopic block (102) are separated from each other, and the second wedge-shaped block (172) and the second wedge-shaped driving block (221) corresponding to the second telescopic block (102) are abutted against each other; when the mounting disc (10) is located at the third position, the second wedge-shaped block (172) and the second wedge-shaped driving block (221) corresponding to the first telescopic block (102) are abutted against each other, and the second wedge-shaped block (172) and the second wedge-shaped driving block (221) corresponding to the second telescopic block (102) are separated from each other; the roller bracket (151) is provided with an insertion block (154), the width of the insertion block (154) is larger than the diameter of the roller and is consistent with the width of the telescopic block (102), and chamfers are arranged on the edge of one end, facing the telescopic block (102), of the insertion block (154) and the edge of one end, facing the insertion block (154), of a sliding channel where the telescopic block (102) is located; side guard plates (104) are arranged on two sides of the annular roller path, a mud blocking ring (141) is arranged between the two side guard plates (104), and the mud blocking ring (141) is fixedly connected with the rotary arm (14); the jet orifice of the rotary spray head (13) is flat, and the length direction of the jet orifice is parallel to the direction of the rotary axis of the rotary spray head (13).

4. The system for foundation pit slope protection construction according to claim 3, characterized in that: the third linkage mechanism comprises a first chain wheel (23) fixedly connected with the rotary table (22), a second chain wheel (24) fixedly connected with the middle base (30) and an annular chain (25) tensioned between the first chain wheel (23) and the second chain wheel (24), the first chain wheel (23) is coaxially arranged with the rotary shaft of the rotary table (22), and the second chain wheel (24) is coaxially arranged with the rotary shaft of the swing arm (21); a movable tensioning mechanism is arranged between the first chain wheel (23) and the second chain wheel (24), and is assembled to enable a chain between the first chain wheel (23) and the second chain wheel (24) to keep a tensioned state when the rotary table (22) slides on the swing arm (21) along with the sliding table (21); the movable tensioning mechanism comprises a sliding seat (26), the sliding seat (26) is connected with the swing arm (21) in a sliding mode along the length direction of the swing arm (21), the sliding seat (26) is assembled to enable the sliding direction of the sliding seat to be always the same as that of the sliding table (21) and the sliding speed of the sliding seat to be always 0.5 times that of the sliding table (21); two first guide wheels (261) are symmetrically arranged on the sliding seat (26), two second guide wheels (203) are symmetrically arranged on the swing arm (21), two parallel sections of chains between the first chain wheel (23) and the second chain wheel (24) respectively and sequentially pass around the two first guide wheels (261) and the second guide wheels (203), and all straight sections of the chains are parallel to each other; the first guide wheel (261) and the second guide wheel (203) are both chain wheels.

5. The system for foundation pit slope protection construction according to claim 4, wherein: the device also comprises a traction rope (28), a third guide wheel (262), a fourth guide wheel (204) and a fifth guide wheel (205), wherein the third guide wheel (262) is used for guiding the traction rope (28), the fourth guide wheel (204) is positioned on the sliding seat (26), the fourth guide wheel (204) is positioned on the swing arm (21) and is close to one end of the second chain wheel (24), and the fifth guide wheel (205) is positioned on the swing arm (21) and is far away from one end of the second chain wheel (24); one end of a traction rope (28) is fixed at one end, close to the second chain wheel (24), of the swing arm (21), the traction rope (28) sequentially rounds a third guide wheel (262), a fourth guide wheel (204) and a fifth guide wheel (205) from the end, then the traction rope is fixed on the sliding table (21), and all straight line sections of the traction rope (28) are parallel to each other; a screw rod (27) is rotatably arranged on the swing arm (21), a nut block is arranged on the sliding seat (26), the screw rod (27) and the nut block form threaded fit, and the screw rod (27) is fixedly connected with a main shaft of a servo motor and used for driving the sliding seat (26) to slide; and the sliding table (21) is also provided with two sixth guide wheels (206), and the two sixth guide wheels (206) are symmetrically arranged on two sides of the first chain wheel (23).

6. The system for foundation pit slope protection construction according to claim 5, characterized in that: a fixed shaft (301) is arranged on the middle seat (30), the fixed shaft (301) is fixedly connected with the middle seat (30), the second chain wheel (24) is fixed on the fixed shaft (301), a pipe shaft (201) is fixedly arranged on the swing arm (21), the pipe shaft (201) is sleeved on the fixed shaft (301) and is rotatably connected with the fixed shaft (301), a third gear (202) is arranged on the pipe shaft (201), a motor is arranged on the middle seat (30), a main shaft of the motor is provided with a fourth gear (302), and the fourth gear (302) is meshed with the third gear (202) and is used for driving the swing arm (21) to rotate; the traction rope (28) is a steel wire rope; and a pitching driving motor for driving the middle seat (30) to rotate relative to the large arm (40) is arranged on the large arm (40).

7. The system for foundation pit slope protection construction according to claim 1, characterized in that: the partition plate (83) is pivoted with the side wall of the barrel cavity (801) through a pivot (831) which is horizontally arranged, two ends of the pivot (831) penetrate through the outer side of the barrel cavity (801), one end of the pivot (831) is provided with a shifting lever (832) which radially protrudes and extends along the pivot (831), the side of the stroke of the barrel cavity (801) corresponding to the feed port (812) is provided with a roller (85) which is blocked with the shifting lever (832), and the roller can push the shifting lever (832) in the rotating process of the rotary barrel (80) so that the partition plate (83) is switched from a vertical state to a horizontal state; the number of the rollers is the same as that of the partition plates (83), the rollers are respectively arranged corresponding to the partition plates (83) one by one, and the rollers are uniformly arranged at intervals along the circumferential direction of the rotary drum (80) when viewed from the vertical direction; a first torsion spring (833) is arranged between the pivot (831) and the rotary drum (80), the first torsion spring (833) is assembled into a structure that the elastic force of the first torsion spring can drive the partition (83) in the horizontal posture to turn over into the vertical posture, one end of the pivot (831), which is far away from the deflector rod (832), is provided with a locking mechanism (84), the locking mechanism (84) is assembled into a structure that when the partition (83) turns over into the horizontal posture, the partition (83) can be kept in the horizontal state, and when the drum cavity (801) moves to the discharge hole (821), the locking mechanism (84) can release the partition (83) to enable the partition (83) to turn over from the horizontal posture into the vertical posture under the action of the first torsion spring (833); locking mechanism (84) include flat axle (834) of pivot (831) tip rigid coupling to and sliding the locking piece (841) that sets up on section of thick bamboo chamber (801) outer wall, set up round hole (842) and flat hole (843) that link up each other on locking piece (841), locking piece (841) have following two stations along sliding path: the locking device comprises a station A, a round hole (842) and a flat shaft (834) are matched, a pivot (831) can rotate freely at the moment, a station B flat hole (843) is matched with the flat shaft (834), the pivot (831) is locked circumferentially at the moment, a third pressure spring (844) is arranged between a locking block (841) and the outer wall of a cylinder cavity (801), and the third pressure spring (844) is assembled to enable the locking block (841) to slide to the station B from the station A through elasticity; the locking mechanism (84) further comprises an unlocking unit which is assembled to be capable of simultaneously switching all the locking blocks (841) from the station B to the station A when the barrel cavity (801) rotates to the position above the discharge port (821); the unlocking unit comprises an unlocking rod (845), the unlocking rod (845) is connected with the outer wall of the barrel cavity (801) in a sliding mode along the vertical direction, a boss (849) which is blocked and connected with each locking block (841) is arranged on the unlocking rod (845), an arched convex part (847) is further arranged on the unlocking rod (845), an arched jacking block (848) is arranged on the rotation path of the arched convex part (847), the arched jacking block (848) pushes the arched convex part (847) in a pushing mode when the barrel cavity (801) rotates to the discharge port (821), the unlocking rod (845) is driven to slide, and at the moment, the boss (849) pushes the locking block (841) to enable the locking block (841) to be switched from the station B to the station A; and a fourth pressure spring (846) is arranged between the unlocking rod (845) and the outer wall of the cylinder cavity (801), and the fourth pressure spring (846) is assembled to enable the boss (849) on the unlocking rod (845) to move towards the direction far away from the locking block (841) by the elastic force of the fourth pressure spring (846).

8. The system for foundation pit slope protection construction according to claim 7, wherein: the rotary drum (80) and the center of the material stirring impeller (71) are fixedly connected with a rotating shaft, the rotating shaft penetrates through the top plate (81) and the bottom plate (82) and is rotatably connected with the rack, and the rack is provided with a motor for driving the rotating shaft to rotate.

9. The system for foundation pit slope protection construction according to claim 8, wherein: the screening unit comprises a feeding conveying belt (51) and a cylindrical screen (50), the cylindrical screen (50) is rotatably arranged on the rack, a rotating shaft is obliquely arranged, and one end of the feeding conveying belt (51) extends into the cylindrical screen (50); the anti-blocking mechanism is arranged at the upper end of the screen, the anti-blocking mechanism comprises a knocking hammer (52), and the knocking hammer (52) is assembled to knock the top of the screen on the cylinder intermittently in the rotating process of the cylindrical screen (50); the knocking hammer (52) comprises a hammer head (521) and a hammer handle (522), the hammer handle (522) is pivoted with the rack, a ratchet wheel (53) is arranged on the outer wall of the end part of the cylindrical screen (50), the hammer handle (522) is lapped on the ratchet wheel (53), and when the cylindrical screen (50) rotates, the ratchet wheel (53) can intermittently lift the hammer handle (522) and then release the hammer handle; a slag discharge groove (54) is further formed in the cylindrical screen (50), the slag discharge groove (54) is located below a knocking area of the knocking hammer (52), the slag discharge groove (54) is obliquely arranged, and the slag discharge groove (54) is used for collecting particle impurities falling after knocking and guiding the particle impurities out of the cylindrical screen (50); the motor is arranged on the rack and used for driving the cylindrical screen (50) to rotate, a gear ring is arranged on the outer wall of the cylindrical screen (50), a gear is arranged on a main shaft of the motor, and the gear is meshed with the gear ring.

10. The system for foundation pit slope protection construction according to claim 9, wherein: the blades of the material stirring impeller (71) are arranged in a vortex shape.