CN216894423U - Concrete injection device for tunnel underpass road construction - Google Patents

Abstract

The utility model discloses a concrete spraying device for tunnel underpass road construction, which comprises a mixing tank, a pump and a spray gun, wherein the mixing tank is provided with a through hole, and a rotating shaft of a motor penetrates through the through hole and extends into the mixing tank; a stirring shaft is also arranged in the mixing tank; the end part of the rotating shaft is inwards sunken to form a first mounting groove and a second mounting groove which are arranged in a stepped mode, and the diameter of the first mounting groove is smaller than that of the second mounting groove; the inner wall of the first mounting groove is provided with a sliding groove and a clamping groove which are equal in width; the sliding groove is a through groove, one end of the clamping groove is closed, and the other end of the clamping groove is communicated with the second mounting groove; an elastic piece is arranged in the second mounting groove; the side wall of the stirring shaft is provided with a clamping block, and the clamping block is matched with the clamping groove. The utility model has the advantages that the stirring shaft can be conveniently detached for cleaning, the material mixing effect is improved, and the construction quality is further improved.

Description

Concrete injection device for tunnel underpass road construction

Technical Field

The utility model relates to the field of tunnel underpass road construction equipment. More particularly, the present invention relates to a concrete spraying apparatus for tunnel underpass construction.

Background

In the construction of a tunnel underpass, a concrete spraying device is often used. The concrete spraying device utilizes compressed air to form suspended air flow of concrete prepared according to a certain proportion and sprays the suspended air flow to the surface to be paved to form a compact concrete layer so as to achieve the aim of supporting.

Current concrete injection apparatus often can use the compounding jar to carry out the mixture of concrete raw materials, and under the effect of (mixing) shaft, more even that concrete raw materials mixes helps the better quality of the concrete layer of follow-up formation. However, the existing concrete injection device has the defects that the stirring shaft is not easy to clean due to the fact that the residual concrete is easy to remain on the stirring shaft in the mixing tank, and the stirring effect and the subsequent construction quality are affected.

There is a need for a concrete spraying device that is easy to clean.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve at least the above problems and to provide a concrete spraying apparatus for tunnel underpass road construction, which can easily detach a mixing shaft from a mixing tank for cleaning, thereby improving the mixing effect of the mixing shaft and further improving the construction quality.

To achieve these objects and other advantages in accordance with the present invention, there is provided a concrete spraying apparatus for tunnel underpass construction, comprising a mixing bowl, a pump and a spray gun, the mixing bowl having a through hole, a rotating shaft of a motor extending into the mixing bowl through the through hole; a stirring shaft is also arranged in the mixing tank; the end part of the rotating shaft is inwards sunken to form a first mounting groove and a second mounting groove which are arranged in a stepped mode, and the diameter of the first mounting groove is smaller than that of the second mounting groove; the inner wall of the first mounting groove is provided with a sliding groove and a clamping groove which are equal in width; the sliding groove is a through groove, one end of the clamping groove is closed, and the other end of the clamping groove is communicated with the second mounting groove; an elastic piece is arranged in the second mounting groove; the side wall of the stirring shaft is provided with a clamping block, and the clamping block is matched with the clamping groove.

Preferably, the elastic part comprises a compression spring and a pressing plate fixedly connected with the compression spring, and one surface of the compression spring, which is far away from the pressing plate, is fixedly connected with the bottom surface of the second mounting groove.

Preferably, the outer wall of the stirring shaft is provided with a plurality of blade groups, the blade groups are arranged along the axial direction of the stirring shaft, each blade group comprises a pair of blades on the same horizontal plane, and one end of each blade is fixedly connected with the side wall of the stirring shaft.

Preferably, a pair of third through mounting grooves is formed in the material mixing tank, a sliding plate is arranged at the bottom of each mounting groove, a filter screen is connected between the two sliding plates, the sliding plates are connected with the mounting grooves through abutting springs, and the abutting springs are in a compressed state; a cam is arranged below the sliding plate, the highest point of the most proximal end of the cam is not in contact with the sliding plate, and the highest point of the most distal end of the cam is higher than the bottom of the third mounting groove; the cam is in driving connection with the rotating shaft.

Preferably, the filter screen is a curved surface which is concave downwards.

Preferably, a wear-resistant layer is laid at the bottom of the sliding plate.

Preferably, the outer wall of the stirring shaft is provided with a sealing block, the sealing block is positioned above the clamping block, and the sealing block is matched with the sliding groove.

Preferably, the material of the sealing block is rubber.

Preferably, the free ends of the vanes are pointed.

Preferably, the filter screen is connected with the two sliding plates in a clamping manner.

The utility model at least comprises the following beneficial effects:

firstly, the utility model designs a perforation, a motor rotating shaft, a stirring shaft, a first mounting groove, a second mounting groove, a sliding groove, a clamping groove, an elastic part and a clamping block, when the stirring shaft is required to be mounted, the clamping block on the stirring shaft passes through the first mounting groove along the sliding groove to reach the second mounting groove, the bottom surface of the stirring shaft is contacted with the elastic part, at the moment, the elastic part is in a compression state, then the stirring shaft is rotated to enable the clamping block to be arranged at the position below the clamping groove, the stirring shaft is moved upwards, the clamping block is clamped into the clamping groove under the rebound effect of the elastic part, and at the moment, the stirring shaft is stably connected with the rotating shaft; when the stirring shaft needs to be detached, the stirring shaft is pressed downwards, the bottom surface of the stirring shaft is in contact with the elastic piece, the elastic piece is in a compressed state at the moment, then the stirring shaft is rotated to enable the clamping block to be located below the sliding groove, then the stirring shaft is moved upwards to enable the clamping block to slide out of the first mounting groove along the sliding groove, and the stirring shaft can be detached from the rotating shaft; on the whole reasonable in design can be convenient dismantle the (mixing) shaft from the pivot and wash, has improved the compounding effect of (mixing) shaft, and then has improved the construction effect.

Secondly, the third mounting groove, the sliding plate, the filter screen, the abutting spring and the cam are designed, the cam is driven by the rotating shaft to rotate, when the cam rotates to be in contact with the sliding plate, the cam pushes the sliding plate to move upwards to compress the abutting spring under the rotation of the cam, when the cam rotates to leave the sliding plate, the sliding plate rebounds downwards under the rebounding action of the abutting spring to generate vibration, the filter screen is driven to generate vibration, the effect of the vibrating screen is achieved, the screening effect of the filter screen can be accelerated, large-particle impurities are screened out, the situation that large-particle aggregates block a conveying pipeline is avoided, and the practicability of the device is improved.

Thirdly, the filter screen is designed into the curved surface which is concave downwards, so that the using area of the filter screen can be increased, the using effect of the filter screen is improved, and the practicability of the device is further improved.

Fourthly, the wear-resisting layer is paved at the bottom of the sliding plate, so that the wear caused by the long-term contact between the cam and the bottom of the sliding plate can be reduced, and the service life of the sliding plate is improved.

And fifthly, the sealing block is designed, and can block the sliding chute, so that the device failure caused by the fact that concrete enters the rotating shaft in the stirring process is avoided.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

FIG. 1 is a schematic structural diagram of a concrete spraying device for tunnel underpass construction according to one embodiment of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a cross-sectional view of the first mounting groove according to one embodiment of the present invention;

fig. 4 is an enlarged view of fig. 2 at B.

Reference numerals: 1-a vehicle body; 2-vehicle wheels; 3-a fourth mounting groove; 4-a motor; 5-a rotating shaft; 6-stirring shaft; 7-a blade; 8-tank body; 9-a top cover; 10-a feed inlet; 11-a feeding pipe; 12-a pressure pump; 13-an air compressor; 14-an air blowing pipe; 15-a spray gun; 16-a spray gun support; 17-a first mounting groove; 18-a platen; 19-compression spring; 20-fixture block; 21-a second mounting groove; 22-a driving wheel; 23-a driven wheel; 24-a second transmission wheel; 25-a belt; 26-a rotating shaft; 27-a slide plate; 28-a filter screen; 29-cam; 30-pressing the spring; 31-a housing; 32- -a chute; 33-card slot; 34-a third mounting groove.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1-4, the utility model provides a concrete spraying device for tunnel underpass road construction, which comprises a mixing tank, a pump and a spray gun, and is characterized in that the mixing tank is provided with a through hole, and a rotating shaft 5 of a motor 4 passes through the through hole and extends into the mixing tank; a stirring shaft 6 is also arranged in the mixing tank; the end part of the rotating shaft 5 is inwards sunken to form a first mounting groove 17 and a second mounting groove 21 which are arranged in a stepped mode, and the diameter of the first mounting groove 17 is smaller than that of the second mounting groove 21; the inner wall of the first mounting groove 17 is provided with a sliding groove 32 and a clamping groove 33 which are equal in width; the sliding groove 32 is a through groove, and one end of the clamping groove 33 is closed and is communicated with the second mounting groove 21; an elastic piece is arranged in the second mounting groove 21; a fixture block 20 is arranged on the side wall of the stirring shaft 6, and the fixture block 20 is matched with the clamping groove 33;

specifically, in the technical scheme, the mixing tank, the pump and the spray gun are all arranged on a vehicle body 1, the mixing tank comprises a tank body 8, the top of the tank body 8 is detachably connected with a top cover 9, the detachable connection mode can be screw connection or clamping connection, a feed inlet 10 is arranged on the top cover 9, a discharge port is arranged on the side wall of the tank body 8, the discharge port is connected with a feeding pipe 11, the feeding pipe is connected with a pressure pump 12, the outlet of the pressure pump 12 is connected with a spray gun 15 through a feeding pipe 11, the spray gun 15 is arranged on a spray gun support 16, the spray gun support 16 is arranged on the vehicle body 1, the spray gun 15 is connected with an air compressor 13 through an air blowing pipe 14, the pressure pump 12 is used for conveying the mixed concrete in the mixing tank to the spray gun 15, and the air compressor 13 is used for spraying the concrete material in the spray gun 15 to a surface to be sprayed; the bottom of the vehicle body 1 is provided with wheels 2; the pressure pump 12, the lance 15 and the air compressor 13 are all devices well known to those skilled in the art;

the top of the vehicle body 1 is provided with an installation groove which is a fourth installation groove 3, a motor 4 is arranged in the fourth installation groove 3, and a rotating shaft 5 of the motor 4 extends into the material mixing tank through a through hole; the first mounting groove 17 is arranged outwards, the sliding groove 32 is a through groove and is communicated with the first mounting groove 17 and the second mounting groove 21, the fixture block 20 can enter the second mounting groove 21 through the sliding groove 32, and the clamping groove 33 is positioned at the bottom of the first mounting groove 17; the elastic part comprises a compression spring 19 and a pressing plate 18 fixedly connected with the compression spring 19, one surface of the compression spring 19, which is far away from the pressing plate 18, is fixedly connected with the bottom surface of the second mounting groove 21, when the fixture block 20 enters the second mounting groove 21, the stirring shaft 6 extrudes the pressing plate 18, the pressing plate 18 bears downward force, the spring is compressed, when the fixture block 20 is clamped in the clamping groove 33, the fixture block 20 can be stably clamped in the clamping groove 33 under the action force of the compression spring 19, and the clamping effect is improved; the outer wall of the stirring shaft 6 is provided with a plurality of blade 7 groups, the plurality of blade 7 groups are arranged along the axial direction of the stirring shaft 6, each blade 7 group comprises a pair of blades 7 on the same horizontal plane, one end of each blade is fixedly connected with the side wall of the stirring shaft 6, and in the technical scheme, a pair of blades are respectively arranged at two points with the farthest distance on the same cross section of the stirring shaft; the free end of the blade 7 is in a sharp angle, so that large-particle aggregates can be further processed into aggregates with smaller particle size;

in the technical scheme, the concrete using process is that when the stirring shaft 6 needs to be installed, after the fixture block 20 on the stirring shaft 6 passes through the first installation groove 17 along the sliding groove 32 and reaches the second installation groove 21, the bottom surface of the stirring shaft 6 is in contact with the elastic part, at the moment, the elastic part is in a compression state, then the stirring shaft 6 is rotated to enable the fixture block 20 to be placed below the clamping groove 33, the stirring shaft 6 is moved upwards, under the resilience effect of the elastic part, the fixture block 20 is clamped into the clamping groove 33, and at the moment, the stirring shaft 6 is stably connected with the rotating shaft 5; when the stirring shaft 6 needs to be disassembled, the stirring shaft 6 is pressed downwards, the bottom surface of the stirring shaft 6 is in contact with the elastic part, the elastic part is in a compression state at the moment, then the stirring shaft 6 is rotated to enable the fixture block 20 to be positioned below the sliding groove 32, then the stirring shaft 6 is moved upwards to enable the fixture block 20 to slide out of the first installation groove 17 along the sliding groove 32, and at the moment, the stirring shaft 6 is disassembled from the rotating shaft 5;

adopt this technical scheme, the beneficial effect who obtains is that, through design perforation, 4 pivots 5 of motor, (mixing) shaft 6, first mounting groove 17, second mounting groove 21, spout 32, draw-in groove 33, elastic component, fixture block 20, can be convenient dismantle from pivot 5 with (mixing) shaft 6 and wash, reasonable in design has improved the compounding effect of (mixing) shaft 6 on the whole, and then has improved the construction effect.

In another technical scheme, a pair of third through mounting grooves 34 are formed in the mixing tank, a sliding plate 27 is arranged at the bottom of each mounting groove, a filter screen 28 is connected between the two sliding plates 27, the sliding plates 27 are connected with the mounting grooves through abutting springs 30, and the abutting springs 30 are in a compressed state; a cam 29 is arranged below the sliding plate 27, the highest point of the most proximal end of the cam 29 is not contacted with the sliding plate 27, and the highest point of the most distal end of the cam 29 is higher than the bottom of the third mounting groove 34; the cam 29 is in driving connection with the rotating shaft 5;

specifically, in the above technical solution, a pair of shells 31 are disposed on two sides of the tank 8, one side of each shell 31 is fixedly connected to a side wall of the tank 8, the third mounting groove 34 is disposed on the side wall of the tank 8, the third mounting groove 34 penetrates through a side wall shared by the tank 8 and the shell 31, the third mounting groove 34 is vertically disposed, a sliding plate 27 is disposed at the bottom of the third mounting groove 34, one end of the sliding plate 27 extends into the tank 8, and the other end of the sliding plate extends out of the tank 8; a filter screen 28 is connected between the two sliding plates 27, the filter screen 28 and the two sliding plates 27 are detachably connected, and the detachable connection mode can be a screw connection mode or a clamping connection mode; the top parts of the sliding plate 27 and the third mounting groove 34 are provided with a pressing spring 30, one end of the pressing spring 30 is fixedly connected with the top part of the third mounting groove 34, the other end of the pressing spring is abutted against the top surface of the sliding plate 27, and the pressing spring 30 is in a compressed state; the cam is a wheel body which is common in the art, the highest point of the most proximal end of the cam 29 is not in contact with the sliding plate 27, the position of the cam 29 closest to the axle center is not in contact with the sliding plate 27, the highest point of the most distal end of the cam 29 is higher than the bottom of the third mounting groove 34, and the most distal end of the cam 29 is in contact with the sliding plate 27 and pushes the sliding plate 27 to move upwards in the rotating process of the cam 29; the specific manner of the driving connection between the cam 29 and the rotating shaft 5 is, as shown in fig. 1 and fig. 4, a horizontal driving wheel 22 is coaxially and fixedly connected to the rotating shaft 5, two sides of the driving wheel 22 are engaged with a vertical driven wheel 23, each driven wheel 23 is coaxially and fixedly connected to a rotating shaft 26, the rotating shaft 26 is rotatably connected to the side wall of the fourth mounting groove 3, a first driving wheel is coaxially and fixedly connected to the rotating shaft 26, the first driving wheel is in driving connection with a second driving wheel 24 through a belt 25, the second driving wheel 24 is coaxially and fixedly connected to a rotating rod, one end of the rotating rod is rotatably connected to the inner wall of the housing 31, the other end of the rotating rod is connected to a cam 29, and the cam 29 rotates under the action of the rotating shaft 5;

in the technical scheme, the specific using process is that the cam 29 is driven by the rotating shaft 5 to rotate, when the cam 29 rotates to be in contact with the sliding plate 27, in the rotating process, the cam 29 pushes the sliding plate 27 to move upwards to compress the abutting spring 30, and when the cam 29 rotates to leave the sliding plate 27, the sliding plate 27 rebounds downwards under the rebounding action of the abutting spring 30 to generate vibration, so that the filter screen 28 is driven to generate vibration to play a role of a vibrating screen;

adopt this technical scheme, the beneficial effect who obtains is through design third mounting groove 34, slide 27, filter screen 28, support pressure spring 30, cam 29, and cam 29 can drive filter screen 28 and produce the vibration, makes filter screen 28 play the effect of shale shaker, can accelerate filter screen 28's screening effect, screens out large granule impurity, avoids large granule aggregate to block up pipeline, improves the practicality of device.

In another technical solution, the filter screen 28 is a curved surface which is concave downwards; adopt this technical scheme, the beneficial effect who obtains is through designing filter screen 28 into undercut's curved surface, multiplicable filter screen 28's usable floor area improves filter screen 28's result of use, and then improves the practicality of device.

In another technical scheme, a wear-resistant layer is laid on the bottom of the sliding plate 27, and the wear-resistant layer is made of materials well known to those skilled in the art; by adopting the technical scheme, the wear generated by the long-term contact between the cam 29 and the bottom of the sliding plate 27 can be reduced, and the service life of the sliding plate 27 is improved.

In another technical scheme, a sealing block is arranged on the outer wall of the stirring shaft 6, the sealing block is made of rubber or silica gel, the sealing block in the technical scheme is a rubber block and is positioned above the fixture block 20, the sealing block is matched with the chute 32, and specifically, when the stirring shaft 6 is clamped on the rotating shaft 5, the sealing block is positioned close to the end face of the rotating shaft 5; by adopting the technical scheme, the obtained beneficial effects are that the sealing block can block the sliding groove 32 by designing the sealing block, thereby avoiding the failure of the device caused by the concrete entering the rotating shaft 5 in the stirring process.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the concrete spray apparatus for tunnel underpass construction of the present invention will be apparent to those skilled in the art.

While embodiments of the utility model have been described above, it is not intended to be limited to the details shown, described and illustrated herein, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed, and to such extent that such modifications are readily available to those skilled in the art, and it is not intended to be limited to the details shown and described herein without departing from the general concept as defined by the appended claims and their equivalents.

Claims (10)

1. The concrete spraying device for tunnel underpass road construction comprises a mixing tank, a pump and a spray gun, and is characterized in that a through hole is formed in the mixing tank, and a rotating shaft of a motor penetrates through the through hole and extends into the mixing tank; a stirring shaft is also arranged in the mixing tank; the end part of the rotating shaft is inwards sunken to form a first mounting groove and a second mounting groove which are arranged in a stepped mode, and the diameter of the first mounting groove is smaller than that of the second mounting groove; the inner wall of the first mounting groove is provided with a sliding groove and a clamping groove which are equal in width; the sliding groove is a through groove, one end of the clamping groove is closed, and the other end of the clamping groove is communicated with the second mounting groove; an elastic piece is arranged in the second mounting groove; the side wall of the stirring shaft is provided with a clamping block, and the clamping block is matched with the clamping groove.

2. The concrete spraying apparatus for tunnel underpass construction as claimed in claim 1, wherein said elastic member comprises a compression spring and a pressing plate fixedly connected to said compression spring, and one side of said compression spring remote from said pressing plate is fixedly connected to the bottom surface of said second installation groove.

3. The concrete spraying apparatus for tunnel underpass construction as claimed in claim 1, wherein a plurality of blade sets are provided on the outer wall of said stirring shaft, the plurality of blade sets are arranged axially along said stirring shaft, each blade set comprises a pair of blades in the same horizontal plane, and one end of each blade is fixedly connected to the side wall of said stirring shaft.

4. The concrete spraying device for tunnel underpass construction according to claim 1, wherein a pair of third mounting grooves are formed in the mixing bowl, a sliding plate is arranged at the bottom of each mounting groove, a filter screen is connected between the two sliding plates, the sliding plates are connected with the mounting grooves through abutting springs, and the abutting springs are in a compressed state; a cam is arranged below the sliding plate, the highest point of the most proximal end of the cam is not in contact with the sliding plate, and the highest point of the most distal end of the cam is higher than the bottom of the third mounting groove; the cam is in driving connection with the rotating shaft.

5. The concrete spray apparatus for tunnel underpass construction as claimed in claim 4, wherein said screen is formed in a downwardly concave curved surface.

6. The concrete spraying apparatus for tunnel underpass construction as claimed in claim 4, wherein a wear layer is laid on the bottom of said sliding plate.

7. The concrete spraying device for tunnel underpass construction as claimed in claim 1, wherein a sealing block is arranged on the outer wall of the stirring shaft, the sealing block is located above the clamping block, and the sealing block is matched with the sliding groove.

8. The concrete injection apparatus for tunnel underpass construction as claimed in claim 7, wherein the material of said sealing block is rubber.

9. The concrete injection apparatus for tunnel underway construction according to claim 3, wherein the free ends of the blades are pointed.

10. The concrete spraying apparatus for tunnel underpass construction as claimed in claim 4, wherein the filter screen is connected to the two sliding plates in a snap-fit manner.

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