CN116335533A - Foundation treatment equipment for collapsible loess in coal mining backfill area - Google Patents

Abstract

The invention provides foundation treatment equipment for collapsible loess in a coal mining backfill area, relates to the technical field of foundation treatment, and aims to solve the technical problems of low foundation treatment efficiency, high treatment noise and heavy environmental pollution. The foundation treatment equipment comprises a supporting seat and a plurality of supporting columns arranged at the bottom of the supporting seat, wherein a telescopic assembly and a control system are arranged on the supporting seat, the telescopic assembly comprises a telescopic upright post which is vertically arranged on the supporting seat, and one end of the telescopic upright post, which is far away from the supporting seat, is provided with a rotary digging mechanism; the bottom of the supporting seat is provided with a traveling device which is used for supporting and moving the supporting seat; the control system is configured to control the telescopic upright posts to stretch so as to adjust the distance between the rotary digging mechanism and the loess layer of the coal mining backfill area, and control the rotary digging mechanism to form a drill hole in the loess layer. The foundation treatment equipment provided by the invention is used for foundation treatment of collapsible loess in a coal mining backfill area.

Description

Foundation treatment equipment for collapsible loess in coal mining backfill area

Technical Field

The invention relates to the technical field of foundation treatment, in particular to foundation treatment equipment for collapsible loess in a coal mining backfill area.

Background

In the new energy facility construction process, a foundation is constructed in advance in a coal mining backfill area with collapsible loess, wherein a foundation treatment device is often used for drilling a preset position of the coal mining backfill area to form a pile hole. Collapsible loess is soil which is significantly deformed due to structural damage of soil after soaking under the action of self-weight stress of an upper soil covering layer or under the combined action of self-weight stress and additional stress.

The coal mining backfill area comprises a yellow soil layer positioned at the lower part and an artificial soil filling area positioned at the upper part of the yellow soil layer along the vertical direction, wherein the thickness change of the yellow soil layer along the horizontal direction is small, the soil quality is uniform, the compression resistance is moderate, and the yellow soil layer is generally used as a basic bearing layer; the artificial filling layer often contains hard particles such as powdery clay, powdery sand, gravel sand, coal cinder, stone blocks and the like, the components and the particle size distribution of the hard particles are also uneven, the particle size range of most hard particles is 0.5-5cm, and the maximum particle size can reach 80cm, so that collapse and mud flowing problems easily occur when the artificial filling layer is excavated, the artificial filling layer is extremely easy to soften when meeting water, the bearing performance of the whole coal mining backfill area can be seriously influenced after the artificial filling layer is penetrated to form pile holes, and collapsible settlement easily occurs, so that the yellow soil layer positioned at the lower part of the artificial filling layer is subjected to collapsible settlement, the pile holes and the foundation are damaged, and the structural stability of new energy facilities constructed on the coal mining backfill area is further influenced.

In the related art, a heavy object, hammering, or vibrating immersed tube is generally used as a ground treatment apparatus to punch a coal mining backfill area having collapsible loess to form pile holes, however, the ground treatment apparatus has problems of low efficiency, high treatment noise, and serious environmental pollution.

Disclosure of Invention

In view of the problems of low foundation treatment efficiency, high treatment noise and heavy environmental pollution of collapsible loess in the coal mining backfill area, the invention provides foundation treatment equipment for the collapsible loess in the coal mining backfill area, which is used for improving the foundation treatment efficiency and reducing the noise and the environmental pollution of foundation treatment.

In order to achieve the above object, the present invention provides the following technical solutions:

the invention provides foundation treatment equipment which comprises a supporting seat and a plurality of supporting columns arranged at the bottom of the supporting seat, wherein a telescopic assembly and a control system are arranged on the supporting seat, the telescopic assembly comprises a telescopic upright post which is vertically arranged on the supporting seat, and one end of the telescopic upright post, which is far away from the supporting seat, is provided with a rotary digging mechanism;

the bottom of the supporting seat is provided with a traveling device which is used for supporting and moving the supporting seat;

the control system is configured to control the telescopic upright post to stretch so as to adjust the distance between the rotary digging mechanism and the loess layer of the coal mining backfill area, and control the rotary digging mechanism to form a drilling hole in the loess layer.

The scheme provided by the invention has at least the following beneficial effects: compared with the mode of directly vibrating and impacting the rock mass by adopting equipment to form pile holes in the prior art, the extrusion hole forming of the working faces of rock masses in different terrains can be realized by the matched telescopic component and the rotary digging mechanism in the foundation treatment equipment, the foundation treatment noise is obviously reduced, the dust generation amount is reduced, meanwhile, the self-walking of the device can be realized by utilizing the electric control structure of the electric control walking wheel of the control system, the treatment efficiency of the foundation treatment pile hole operation is improved, and the treatment noise and the environmental pollution are reduced.

The foundation treatment device provided by the invention can be also suitable for foundation treatment except for the coal mining backfill area.

In one possible implementation, the rotary digging mechanism comprises a control console arranged at one end of the telescopic upright far away from the supporting seat, and a first control motor and a second control motor arranged in the control console;

the rotary digging mechanism further comprises a first rotary column and a second rotary column, the second rotary column is of a hollow structure, the second rotary column is sleeved with the first rotary column in a coaxial mode, a drill bit is arranged at the end portion of the second rotary column, the end portion of the second rotary column where the drill bit is located is connected with the first rotary column through a first connecting rod, and the first connecting rod transmits acting force enabling the first rotary column to move relative to the second rotary column;

the first control motor is in transmission connection with the first rotary column, and the second control motor is in transmission connection with the second rotary column.

In one possible implementation manner, the first rotary column comprises a first sleeve, a second sleeve and a third sleeve which are sleeved in turn from inside to outside, and the first sleeve, the second sleeve and the third sleeve can move relative to each other along the axial direction of the first rotary column;

the second rotating column comprises a fourth sleeve, a fifth sleeve and a sixth sleeve which are sequentially sleeved from inside to outside, and the fourth sleeve, the fifth sleeve and the sixth sleeve can move relative to each other along the axial direction of the second rotating column;

the drill bit is arranged at the end part of the sixth casing, and the third casing is connected with the fourth casing through the first connecting rod, so that the third casing and the fourth casing synchronously move.

In one possible implementation, the first sleeve is provided with a jack, and the jack penetrates through the first sleeve along the radial direction of the first sleeve;

the first rotating column further comprises a supporting plate inserted into the insertion hole, and gaps are formed between two ends of the supporting plate and the second sleeve along the radial direction of the first sleeve;

along the axial direction of the first sleeve, a limiting column is arranged on the surface, away from the drill bit, of the supporting plate; the pipe wall of the second sleeve is provided with a limiting hole, the limiting hole is opposite to the limiting column along the axial direction of the first sleeve, and when the first sleeve is subjected to acting force deviating from the drill bit, the limiting hole cooperates with the limiting column to limit the moving distance of the first sleeve relative to the second sleeve along the axial direction of the first sleeve.

In one possible implementation, the first end side wall of the first rotary column is provided with external threads, and the first end faces the drill bit; a threaded hole matched with the external thread is formed in the second rotating column;

the first rotating column comprises a guide surface, at least two sliding grooves are formed in the second rotating column along the radial direction of the second rotating column, a push rod is arranged in each sliding groove, and the first end of each push rod is positioned in the second rotating column and is in butt joint with the guide surface; a reset spring is arranged on each push rod;

the first control motor controls the first rotary column to rotate in the second rotary column to rotate forward, so that the guide surface pushes the second end of each push rod to extend out of the second rotary column; the first control motor controls the first rotary column to rotate in the second rotary column to reversely rotate, and the reset spring enables the second end of each push rod to be received in each sliding groove.

In one possible implementation manner, the outer circumferential surface of the first rotary column is provided with a plurality of first drain holes, the outer circumferential surface of the second rotary column is provided with a plurality of second drain holes, and the outer circumferential surface of the drill bit is provided with a plurality of third drain holes.

In one possible implementation manner, a damping mechanism is arranged between the walking device and the supporting seat, the damping mechanism comprises a damping seat, a second connecting rod and a damping column which are sequentially connected, the damping seat is connected with the walking device, and the damping column is connected with the bottom of the supporting seat;

the second connecting rod and the shock absorption column are flexible structures.

In one possible implementation manner, a damping spring is arranged between the damping seat and the bottom of the supporting seat, and two ends of the damping spring are respectively abutted with the damping seat and the bottom of the supporting seat.

In one possible implementation manner, the telescopic assembly further comprises a fixing frame and a supporting rod, the fixing frame is installed at one end of the telescopic upright far away from the supporting seat, and the rotary digging mechanism is connected with the telescopic upright through the fixing frame; the both ends of bracing piece respectively with the supporting seat with the mount is connected, just the bracing piece for the supporting seat slope sets up.

In one possible implementation manner, the control system comprises a first control chamber and a second control chamber, wherein the first control chamber is adjacently arranged on the supporting seat, the second control chamber is positioned on the supporting seat and far away from the end part of the telescopic upright post, the first control chamber controls the telescopic upright post to stretch and control the rotary digging mechanism to rotate and stop;

and the second control room controls the starting and stopping of the walking device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an overall structure of a foundation treatment device according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a rotary digging mechanism of a foundation treatment device according to an embodiment of the present invention;

fig. 3 is a schematic view of an external structure of a first spin column according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an internal structure of a first spin column according to an embodiment of the present invention;

FIG. 5 is a schematic view of a plurality of sleeves in a first spin column according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a connection end portion of a first rotating column and a second rotating column according to an embodiment of the present invention;

fig. 7 is a view of a drilling operation scene of a rotary digging mechanism of a foundation treatment device according to an embodiment of the present invention;

FIG. 8 is a schematic view of a pile foundation structure formed after drilling operation of a foundation treatment device according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a plurality of sleeves in a second spin column according to an embodiment of the present invention.

Reference numerals illustrate:

100-supporting seats;

200-supporting columns;

201-a support body; 202, reinforcing rib plates;

300-telescoping assembly;

301-telescoping column; 302-a fixing frame; 303-supporting rods;

400-travelling wheels;

500-a rotary digging mechanism;

501-a console; 502-a first control motor; 503-a second control motor;

504-a first spin column; 505-a second spin column; 506-a first connecting rod;

507—drill bit; 508-a first cannula; 509-a second cannula;

510-a third sleeve; 511-a second thread; 512-limit column;

513-a support plate; 514-a limiting hole; 515-push rod;

516-overhanging columns; 517-a first drain hole; 518-a third drain hole;

519-external threads; 520-a return spring; 521-guiding surfaces;

522-fourth sleeve; 523-fifth sleeve; 524-sixth cannula;

600-a control system;

601-a first control room; 602-a second control room;

700-a damping mechanism;

701-a shock mount; 702-a second connecting rod;

703-a shock strut; 704-a damping spring;

800-mining backfill area;

801-artificial fill; an 802-yellow layer;

900-pile foundation structure;

901-pile foundation holes; 902-pile foundation bedplate.

Detailed Description

As described in the background art, a part of new energy facility foundations are often built in a coal mining backfill area, and the foundation construction of the area with collapsible loess needs to perform characteristic foundation treatment to ensure the stability of the foundation. In the related art, a weight, hammering or vibrating immersed tube is generally used as a ground treatment apparatus for perforating a rock mass to be treated to form a pile hole, but these ground treatment apparatuses have problems of low efficiency, high treatment noise and serious environmental pollution. The inventor researches find that the cause of the problem is mainly that: after the rock mass is perforated by adopting foundation treatment modes such as heavy objects, hammering or vibrating immersed tubes, the impact and vibration noise of the working face to be treated in the operation process is large, the dust emission is high, the environmental pollution is serious, and in order to avoid the possible soil layer settlement phenomenon caused by loess collapsibility, the soil filling and tamping operation is needed to be further carried out in the pile hole after the pile hole is formed, so that the foundation treatment efficiency is definitely further reduced and the environmental pollution is aggravated.

According to the foundation treatment equipment for collapsible loess in the coal mining backfill area, extrusion pore-forming of working faces of rock masses of different terrains can be achieved through the matched telescopic components and the rotary digging mechanism in the foundation treatment equipment, foundation treatment noise is remarkably reduced, dust production is reduced, meanwhile, the travelling wheels are controlled by the control system to achieve self-walking of the device, treatment efficiency in pile hole operation of foundation treatment is improved, and environmental pollution is reduced.

In order to make the above objects, features and advantages of the embodiments of the present invention more comprehensible, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1, the foundation treatment apparatus provided by the embodiment of the present invention includes a support base 100, a plurality of support columns 200 fixed to the bottom of the support base 100, and a telescopic assembly 300 disposed on the support base 100; in this embodiment, the number of the support columns 200 is four, and the support columns 200 are respectively disposed at four corner areas of the bottom of the support base 100.

The foundation treatment device further comprises a travelling wheel 400, wherein the travelling wheel 400 is arranged at the bottom of the supporting seat 100 and is used for moving the supporting seat 100. Illustratively, the road wheel 400 is located between two support columns 200 facing each other in the left-right direction in fig. 1.

The support column 200 comprises a support main body 201 and reinforcing rib plates 202 which are connected, wherein the reinforcing rib plates 202 are arranged on two sides of a first end far away from the bottom of the support main body 201, the reinforcing rib plates 202 are flush with the first end of the support main body 201, so that the reinforcing rib plates 202 and the first end of the support main body 201 can be contacted with the ground, the contact area between the support column 200 and the ground can be increased, the supporting force and the supporting stability of the support column 200 are increased, and the pressure transmitted to the ground through the support column 200 during rotary digging operation of the rotary digging mechanism 500 is dispersed. Illustratively, the stiffener 202 may be a steel stiffener 202.

The telescopic assembly 300 comprises a telescopic upright post 301, a fixing frame 302 and a supporting rod 303, wherein the telescopic upright post 301 is vertically arranged at the end part of the supporting seat 100, the fixing frame 302 is arranged at one end of the telescopic upright post 301 far away from the supporting seat 100, a rotary digging mechanism 500 is arranged on the fixing frame 302, the rotary digging mechanism 500 is connected with the telescopic upright post 301 through the fixing frame 302, and therefore lifting or lowering of the fixing frame 302 is achieved through telescopic of the telescopic upright post 301, and accordingly height adjustment control of the rotary digging mechanism 500 is achieved.

The bracing piece 303 is connected between supporting seat 100 surface and mount 302, namely the both ends of bracing piece 303 are connected with supporting seat 100 and mount 302 respectively, and bracing piece 303 sets up for supporting seat 100 slope, and bracing piece 303 is used for flexible stand 301 to be spacing fixed after flexible regulation, and bracing piece 303 is scalable bracing piece, like this, can be after flexible stand 301 is adjusted the stretching out and drawing out the height of relative supporting seat 100, cooperates flexible certain length with it, compares with the bracing piece 303 of fixed length, need not to change the mounted position of bracing piece 303 on the supporting seat 100 for flexible stand 301 and bracing piece 303's suitability has obtained showing and has promoted.

Further, one end of the support rod 303 is hinged to a hinge connection installation position preset on the surface of the support base 100, so that flexibility of the support rod 303 can be improved, and the telescopic adjustment of the telescopic upright 301 can be well matched.

The support seat 100 is also provided with a control system 600, which comprises a first control chamber 601 adjacently arranged on the support seat 100 and a second control chamber 602 positioned on the support seat 100 and far away from the end part of the telescopic upright post 301, wherein the first control chamber 601 controls the telescopic upright post 301 to stretch and retract, and controls the rotary excavating mechanism 500 to rotate and stop; the second control room 602 controls the start and stop of the road wheel 400.

On the basis of the above embodiment, it may be improved that the rotary digging mechanism 500 includes a control section and a rotary section connected in sequence, where the control section includes a console 501 connected to the fixing frame 302, and a first control motor 502 and a second control motor 503 disposed in the console 501, and as illustrated in fig. 2, the console 501 is of a parallelepiped structure; the rotary segment comprises a first rotary column 504 and a second rotary column 505 which are connected through a first connecting rod 506, and a drill bit 507 which is connected to the end of the second rotary column 505 far away from the console 501, wherein the first rotary column 505 and the second rotary column 505 are respectively an inner rotary column and an outer rotary column which are coaxially arranged inside and outside according to the relative position relation of the first rotary column and the second rotary column, the second rotary column 505 is sleeved with the first rotary column 504, the first control motor 502 is in transmission connection with the first rotary column 504 and is used for controlling the rotation and the stopping of the first rotary column 504, and the second control motor 503 is in transmission connection with the second rotary column 505 and is used for controlling the rotation and the stopping of the second rotary column 505.

From the single structure of the first rotation column 504 or the second rotation column 505, the first rotation column 504 and the second rotation column 505 are each constituted by a plurality of sleeves and collar sleeves, and by way of example, in connection with fig. 4, the first rotation column is constituted by three sleeves including a first sleeve 508, a second sleeve 509 and a third sleeve 510, and the second sleeve 509 is looped around the first sleeve 508, the third sleeve 510 is looped around the second sleeve 509, and the first sleeve 508 is slidably connected with the second sleeve 509, the second sleeve 509 is slidably connected with the third sleeve 510, that is, one end of the first sleeve 508 is slidably extended out of an end of the second sleeve 509 with respect to the second sleeve 509 to form a first extension, and one end of the second sleeve 509 is slidably extended out of an end of the third sleeve 510 with respect to the third sleeve 510 to form a second extension, that is, the first rotation column 504 includes the first sleeve 508, the second sleeve 509 and the third sleeve 510 looped in this order from inside to outside, and the first sleeve 508, the second sleeve 509 and the third sleeve 510 are movable with respect to each other in the axial direction of the first rotation column.

Referring to fig. 9, the second rotary column includes a fourth casing 522, a fifth casing 523, and a sixth casing 524 which are sequentially sleeved from the inside to the outside, and the fourth casing 522, the fifth casing 523, and the sixth casing 524 are movable relative to each other in the axial direction of the second rotary column;

the drill bit is disposed at an end of a sixth casing 524, and the third casing is connected to a fourth casing 522 by a first connecting rod such that the third casing and the fourth casing 522 move synchronously.

In this way, the flexibility and the adjustability of the first rotary column and the second rotary column are improved, and the rotary drilling mechanism 500 is also convenient for adjusting and controlling the depth of the working rock mass.

Further, the outer wall of the first sleeve 508 is provided with a first thread, the inner wall of the second sleeve 509 is provided with a second thread 511, and the first sleeve 508 can move vertically relative to the second sleeve 509 by matching the first thread with the second thread 511, so that the first sleeve 508 can move telescopically relative to the second sleeve 509.

Further, the first sleeve 508 is provided with a jack, which penetrates through the first sleeve 508 along the radial direction of the first sleeve 508;

the first spin column further includes a support plate 513 inserted into the insertion hole, and a gap between both ends of the support plate 513 and the second sleeve 509 in a radial direction of the first sleeve 508;

along the axial direction of the first sleeve 508, a surface of the supporting plate 513 facing away from the drill bit 507 is provided with a limit post 512; the pipe wall of the second sleeve 509 is provided with a limiting hole 514, the limiting hole 514 is opposite to the limiting column 512 along the axial direction of the first sleeve 508, and when the first sleeve 508 is subjected to a force deviating from the drill bit 507, the limiting hole 514 cooperates with the limiting column 512 to limit the moving distance of the first sleeve 508 relative to the second sleeve 509 along the axial direction of the first sleeve 508.

That is, a plurality of limiting columns 512 are arranged in the second sleeve 509 at intervals, the limiting columns 512 are located between the outer peripheral wall of the first sleeve 508 and the outer peripheral wall of the second sleeve 509, one end, close to the drill bit 507, of each limiting column 512 is abutted with a supporting plate 513, the supporting plates 513 penetrate through the first sleeve 508, limiting holes 514 are arranged in the end, close to the first sleeve 508, of the second sleeve 509 at intervals, and each limiting hole 514 corresponds to each limiting column 512 one by one.

When the rotary drilling mechanism 500 is continuously dug down based on a working rock body, namely, a rotary column is continuously screwed down based on a working surface, a plurality of sleeves including a first sleeve 508, a second sleeve 509 and a third sleeve 510 are displaced in the same direction, along with the increase of the screwing depth, namely, the down drilling depth, the sleeves generate relative displacement due to the resistance of the rock body to the sleeves, namely, the sleeves positioned inside the sleeves can generate displacement relative to the outer sleeve, as shown in fig. 4 and 5, the first sleeve 508 positioned in the second sleeve 509 can vertically move upwards relative to the second sleeve 509, and the limit column 512 is driven to move towards the limit hole 514 through the supporting plate 513, so that the first sleeve 508 which is completely sleeved by the second sleeve 509 gradually extends from the end face of the second sleeve 509 away from the drill 507, and when the end face of the first sleeve 508 is completely extended relative to the second sleeve 509, the limit column 512 moves into the limit hole 514, so that the engagement between the first sleeve 508 and the second sleeve 509 is realized, then the first sleeve 508 rotates to drive the limit column 509 to move towards the limit hole 514, and the second sleeve 510 can further extend well, so that the depth of the second sleeve 510 can be controlled to extend well, and the depth of the second sleeve 510 can be further controlled.

It should be noted that, the "fully extended" may refer to an extension distance that is one half, one third, or the like of the length of the first sleeve 508.

Referring to fig. 6, two side walls of the outer peripheral surface of the second rotary column 505 near one end of the drill bit 507 are oppositely provided with a sliding groove, a push rod 515 is slidably connected through the sliding groove, one end of the push rod 515 is abutted against the side wall of the first rotary column 504, the other end of the push rod 515 is connected with an overhanging column 516, the overhanging column 516 is located in the sliding groove and can slidably extend to the outside of the side wall of the second rotary column 505, deviating from the first rotary column 504, of the through groove, so that overhanging column 516 forms an overhanging part relative to the side wall of the second rotary column 505, and the aperture adjustment of the pile foundation hole 901 of the rotary digging mechanism 500 is realized by adjusting the length of the overhanging part.

That is, the first end side wall of the first rotary column 504 is provided with external threads, and the first end faces the drill bit; a threaded hole matched with the external thread is formed in the second rotary column 505; the first rotating column 504 includes a guiding surface 521, and along the radial direction of the second rotating column 505, the second rotating column 505 is provided with at least two sliding grooves, each sliding groove is provided with a push rod 515, and a first end of each push rod 515 is located in the second rotating column 505 and is abutted against the guiding surface 521; each push rod 515 is provided with a return spring 520, an opening is arranged at the end of the extending column 516 facing the first rotating column 504, the push rods 515 are inserted into the extending column 516 along the opening, one end of each extending column 516 is located in a chute, the return springs 520 are arranged between the extending column 516 and each push rod 515, as shown in fig. 6, one end of each return spring 520, which is close to the first rotating column 504, is abutted against the outer wall of the end of each push rod 515, and the other end of each return spring is abutted against the inner wall of each extending column 516, so that elastic potential energy can be accumulated when the first control motor 502 controls the first rotating column 504 to rotate and extend into the second rotating column 505, and the extending columns are driven to be recovered into the chute when the first rotating column 504 extends out of the second rotating column 505.

That is, the first control motor 502 controls the first rotation column 504 to rotate in the forward direction within the second rotation column 505, so that the guide surface 521 pushes the second end of each push rod 515 to protrude outside the second rotation column 505; the first control motor 502 controls the first rotary column 504 to rotate in the opposite direction in the second rotary column 505, and the return spring 520 allows the second end of each push rod 515 to be received in each chute, the second end being the end of the push rod 515 near the drill bit.

When the rotary excavating mechanism 500 reaches the target depth for the rotary excavating work of the working rock mass, i.e. the depth of pile foundation reaches the preset depth, and then the coal mining backfill area 800 is the area to be processed, the rotary excavating mechanism 500 is excavated down into the yellow soil layer 802 from the artificial earth filling layer 801, the second rotary column 505 controls the motor to receive the shutdown signal transmitted by the first control chamber 601 and stop running, the first rotary column 504 controls the motor to be in an on state, i.e. the second rotary column 505 controls the motor to stop running, the first rotary column 504 controls the motor to keep running, so that the first rotary column 504 keeps rotating, thereby driving the external thread 519 which is in threaded connection with the first rotary column 504 and is close to the end part of the drill bit 507 to rotate together and move downwards, the push rod 515 is abutted to the side wall of the first end of the first rotary column 504, the first end is close to the end of the drill bit 507, the section of the first end along the vertical direction is in the shape of an inverted trapezoid, i.e. the length of the lower bottom edge is smaller than the trapezoid of the upper bottom edge, and the bottom edge of the inverted trapezoid faces the drill bit 507.

Thus, along with the rotation of the first rotary column 504 going downwards, the sidewall at the first end continuously gives the pushing rod 515 a force towards the second rotary column 505 along the radial direction of the first rotary column 504, so that the pushing rod 515 moves towards the direction away from the first rotary column 504, and further pushes the overhanging column 516 accommodated in the chute to extend out of the outer wall of the second rotary column 505, thus increasing the pile foundation aperture, realizing the size control of the diameter of the pile foundation hole 901, and forming the pile foundation bottom plate 902 after the rotary digging of the working face is completed, as shown in fig. 8, the pile foundation structure 900 formed by the pile foundation hole 901 and the pile foundation bottom plate has a strong bearing capacity, and can effectively prevent the uneven settlement phenomenon of the foundation.

It will be appreciated by those skilled in the art that pile foundation hole 901, i.e., foundation pile hole, is the hole of a poured concrete pile drilled to increase the load bearing capacity and shock resistance of the building foundation.

On the basis of the above embodiment, it may be improved that, referring to fig. 3, a plurality of first water drain holes 517 are formed on the outer peripheral surface of the first rotary column 504 at intervals, a plurality of second water drain holes are formed on the outer peripheral surface of the second rotary column 505 at intervals, and a plurality of third water drain holes 518 are formed on the side surface of the drill bit 507 at intervals.

Through the further design of the rotary excavating mechanism 500, the first rotary column 504 and the second rotary column 505 are controlled to rotate by the control motor arranged in the control console 501 to drive the drill bit 507 to rotate so as to realize the excavating of the stratum or the soil layer, furthermore, the control signals of the control motor to the first rotary column 505 and the second rotary column 505 can be adjusted to enable the first rotary column and the second rotary column to rotate in the same frequency and the same direction, and under the condition that the first control motor 503 and the second control motor 503 are operated simultaneously, the power and the efficiency of the drilling operation of the drill bit 507 can be further improved.

It is worth mentioning that dig mechanism 500 soon with the help of the cooperation of column spinner and drill bit 507 to rotary extrusion pore-forming's mode forms pile foundation hole 901 to the working face, whole work progress noise is lower, and the dust rate of production is also less, has effectively promoted the feature of environmental protection of construction.

The bottom of the supporting seat 100 is provided with a damping mechanism 700, which is located between the travelling wheel 400 and the supporting seat 100 and used for controlling the travelling wheel 400 to rotate by the second controller to drive the device to walk and then damp the supporting seat 100, thereby reducing the damage caused by the excessive kinetic energy transferred to the supporting seat 100 due to the excessive kinetic friction with the road surface when the travelling wheel 400 moves to the rugged terrain.

The damping mechanism 700 comprises a damping seat 701, a second connecting rod 702 and a damping column 703 which are sequentially connected, the second connecting rod 702 and the damping column 703 are of flexible structures, so that the energy absorption effect of the damping mechanism 700 can be improved, the vibration of the supporting seat 100 in the running process of the device is reduced, a damping spring 704 is further connected between the damping seat 701 and the bottom of the supporting seat 100, and the damping spring 704 can be positioned between the two damping columns 703, so that the damping capacity of the damping mechanism 700 can be further improved.

Through the structural design in the above-mentioned embodiment, can realize functions such as foundation treatment facility walk by oneself, from shock attenuation and dig mechanism 500 height adjustment soon, have that topography adaptability is strong, remove advantages such as convenient, easy and simple to handle.

The foundation treatment equipment provided by the embodiment of the invention can be used for foundation treatment of collapsible loess in a coal mining backfill area.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In this specification, each embodiment or implementation is described in a progressive manner, and each embodiment focuses on a difference from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (10)

1. The foundation treatment equipment for collapsible loess in a coal mining backfill area is characterized by comprising a supporting seat and a plurality of supporting columns arranged at the bottom of the supporting seat, wherein a telescopic assembly and a control system are arranged on the supporting seat, the telescopic assembly comprises a telescopic upright post vertically arranged on the supporting seat, and a rotary digging mechanism is arranged at one end of the telescopic upright post far away from the supporting seat;

the bottom of the supporting seat is provided with a traveling device which is used for supporting and moving the supporting seat;

the control system is configured to control the telescopic upright post to stretch so as to adjust the distance between the rotary digging mechanism and the loess layer of the coal mining backfill area, and control the rotary digging mechanism to form a drilling hole in the loess layer.

2. The foundation treatment apparatus according to claim 1, wherein the rotary digging mechanism includes a console provided at an end of the telescopic column remote from the supporting base, and a first control motor and a second control motor provided in the console;

the rotary digging mechanism further comprises a first rotary column and a second rotary column, the second rotary column is of a hollow structure, the second rotary column is sleeved with the first rotary column in a coaxial mode, a drill bit is arranged at the end portion of the second rotary column, the end portion of the second rotary column where the drill bit is located is connected with the first rotary column through a first connecting rod, and the first connecting rod transmits acting force enabling the first rotary column to move relative to the second rotary column;

the first control motor is in transmission connection with the first rotary column, and the second control motor is in transmission connection with the second rotary column.

3. The foundation treatment apparatus according to claim 2, wherein said first rotary column comprises a first sleeve, a second sleeve and a third sleeve which are sequentially sleeved from inside to outside, and said first sleeve, second sleeve and third sleeve are movable relative to each other in an axial direction of said first rotary column;

the second rotating column comprises a fourth sleeve, a fifth sleeve and a sixth sleeve which are sequentially sleeved from inside to outside, and the fourth sleeve, the fifth sleeve and the sixth sleeve can move relative to each other along the axial direction of the second rotating column;

the drill bit is arranged at the end part of the sixth casing, and the third casing is connected with the fourth casing through the first connecting rod, so that the third casing and the fourth casing synchronously move.

4. A foundation treatment device according to claim 3, wherein said first casing is provided with a receptacle penetrating said first casing in the radial direction of said first casing;

the first rotating column further comprises a supporting plate inserted into the insertion hole, and gaps are formed between two ends of the supporting plate and the second sleeve along the radial direction of the first sleeve;

along the axial direction of the first sleeve, a limiting column is arranged on the surface, away from the drill bit, of the supporting plate; the pipe wall of the second sleeve is provided with a limiting hole, the limiting hole is opposite to the limiting column along the axial direction of the first sleeve, and when the first sleeve is subjected to acting force deviating from the drill bit, the limiting hole cooperates with the limiting column to limit the moving distance of the first sleeve relative to the second sleeve along the axial direction of the first sleeve.

5. The foundation treatment apparatus of claim 2, wherein a first end side wall of said first rotary column is provided with external threads, said first end being directed toward said drill bit; a threaded hole matched with the external thread is formed in the second rotating column;

the first rotating column comprises a guide surface, at least two sliding grooves are formed in the second rotating column along the radial direction of the second rotating column, a push rod is arranged in each sliding groove, and the first end of each push rod is positioned in the second rotating column and is in butt joint with the guide surface; a reset spring is arranged on each push rod;

the first control motor controls the first rotary column to rotate in the second rotary column to rotate forward, so that the guide surface pushes the second end of each push rod to extend out of the second rotary column; the first control motor controls the first rotary column to rotate in the second rotary column to reversely rotate, and the reset spring enables the second end of each push rod to be received in each sliding groove.

6. The foundation treatment apparatus according to claim 2, wherein a plurality of first drain holes are provided on an outer peripheral surface of the first rotary column, a plurality of second drain holes are provided on an outer peripheral surface of the second rotary column, and a plurality of third drain holes are provided on an outer peripheral surface of the drill bit.

7. The foundation treatment equipment according to claim 1, wherein a damping mechanism is arranged between the travelling device and the supporting seat, the damping mechanism comprises a damping seat, a second connecting rod and a damping column which are sequentially connected, the damping seat is connected with the travelling device, and the damping column is connected with the bottom of the supporting seat;

the second connecting rod and the shock absorption column are flexible structures.

8. The foundation treatment apparatus according to claim 7, wherein a damper spring is provided between the damper base and the bottom of the support base, and both ends of the damper spring are respectively abutted with the damper base and the bottom of the support base.

9. The foundation treatment equipment according to any one of claims 1 to 8, wherein the telescopic assembly further comprises a fixing frame and a supporting rod, the fixing frame is installed at one end of the telescopic upright far away from the supporting seat, and the rotary digging mechanism is connected with the telescopic upright through the fixing frame; the both ends of bracing piece respectively with the supporting seat with the mount is connected, just the bracing piece for the supporting seat slope sets up.

10. The foundation treatment apparatus of claim 9, wherein said control system comprises a first control chamber disposed adjacent to said support base and a second control chamber disposed on said support base distal from an end of said telescoping mast, said first control chamber controlling telescoping of said telescoping mast and rotation and stalling of said rotary digging mechanism;

and the second control room controls the starting and stopping of the walking device.

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