A spray and trowel device

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By using the connecting plate, connecting shaft, and reciprocating screw structure of the sprayed surface smoothing device, the problem of operators having difficulty controlling the movement trajectory of the scraper plate is solved, achieving a smooth sprayed surface and reducing the occurrence of pits.

CN224495835UActive Publication Date: 2026-07-14CHINA RAILWAY NO 10 ENG GRP CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: CHINA RAILWAY NO 10 ENG GRP CO LTD
Filing Date: 2025-08-18
Publication Date: 2026-07-14

AI Technical Summary

Technical Problem

In existing leveling devices, operators have difficulty controlling the movement trajectory of the scraper plate, resulting in pits and unevenness on the sprayed surface.

Method used

A shotcrete surface smoothing device was designed. Through the combination of a connecting plate, a connecting shaft, an auxiliary wheel, and a reciprocating screw, the device achieves precise control over the movement trajectory and tilt angle of the contact plate. Combined with the cleaning plate to fill excess concrete, it reduces pitting.

Benefits of technology

It effectively prevents the contact plate from floating up and down during operation, improves the smoothing effect of the sprayed surface, and reduces the occurrence of pits.

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Figure CN224495835U_ABST

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Abstract

The utility model relates to the field of building construction technology, put forward a kind of spray anchor surface trowelling device, including support column, still including connecting shaft, connecting pipe, connecting pin, connecting plate, connecting frame, moving column, fixed pin, connecting piece, contact plate, auxiliary pipe, support block, moving rod, plug-in pin, auxiliary wheel and blocking piece, connecting shaft is rotatably connected in support column, the outside of support column is equipped with connecting pipe, connecting pipe's outer surface is equipped with connecting pin, and the end of connecting pin into connecting pipe is tightly connected with connecting shaft, and connecting plate is installed on the outer surface of connecting shaft, and the upper surface of connecting plate is equipped with connecting frame, and the inside of connecting frame is slidably connected with moving column, and the outside of connecting frame is equipped with fixed pin, and the end of fixed pin into connecting frame is first moving column, and connecting piece is rotatably connected on the outside of moving column. By the above technical scheme, to solve the problem that operator is difficult to control the moving track of scraping plate in the prior art.

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Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a spray anchor surface smoothing device. Background Technology

[0002] Shotcrete and anchor support refers to the combined action of high-pressure shotcrete and metal anchors driven into the rock strata (or they can be used separately depending on the geological conditions) to reinforce the rock strata. It is divided into temporary and permanent support structures. Shotcrete can be used as initial support for the surrounding rock of a tunnel, or as permanent support. Shotcrete and anchor support creates a system where the anchors, shotcrete layer, and surrounding rock work together to prevent rock loosening and separation. It transforms a certain thickness of surrounding rock into a self-supporting arch, effectively stabilizing the surrounding rock. The shotcrete surface formed by the shotcrete needs to be smoothed by operators, thus requiring the use of a smoothing device.

[0003] The existing leveling device requires the operator to push the scraper plate along the sprayed concrete surface, so that the scraper plate pushes the excess concrete forward to fill the areas where the concrete is lacking. However, it is difficult to keep the scraper plate at the same horizontal position during the movement, which makes some sprayed concrete surfaces prone to pits.

[0004] The smoothing device described above has a problem: the operator has difficulty controlling the movement trajectory of the squeegee plate, which causes the squeegee plate to float up and down during movement, thus reducing the smoothing effect of the device. Utility Model Content

[0005] This invention proposes a spray-anchor surface smoothing device to solve the problem in the prior art where it is difficult for operators to control the movement trajectory of the scraper plate.

[0006] The technical solution of this utility model is as follows: A spray anchor surface smoothing device, including a support column, and further comprising:

[0007] The connecting shaft is rotatably connected to the support column. A connecting pipe is installed on the outer side of the support column, and a connecting pin passes through the outer surface of the connecting pipe. One end of the connecting pin, which passes through the connecting pipe, abuts against the connecting shaft. A connecting plate is installed on the outer surface of the connecting shaft. A connecting frame is installed on the upper surface of the connecting plate. A movable column is slidably connected inside the connecting frame. A fixing pin passes through the outer side of the connecting frame, and one end of the fixing pin, which passes through the connecting frame, abuts against the movable column. A connecting piece is rotatably connected to the outer side of the movable column. A contact plate is installed on the side of the connecting piece. An auxiliary pipe is installed on the outer side of the contact plate. A support block is installed on the side of the contact plate. A movable rod passes through the inside of the support block. A blocking plate is installed at the bottom end of the movable rod. A plug pin passes through the side of the support block, and one end of the plug pin, which passes through the support block, abuts against the movable rod. An auxiliary wheel is installed at the top end of the movable rod.

[0008] As a preferred embodiment of the sprayed anchor surface smoothing device of this utility model, in order to better control the reciprocating movement of the moving frame, an installation plate is installed inside the auxiliary tube, and a reciprocating screw is rotatably connected inside the installation plate.

[0009] As a preferred embodiment of the sprayed anchor surface smoothing device of this utility model, in order to facilitate the drive motor to drive the reciprocating screw to rotate, a drive motor is installed inside the auxiliary tube, and the output end of the drive motor is connected to the bottom end of the reciprocating screw.

[0010] In a preferred embodiment of the sprayed anchor surface smoothing device of this utility model, in order for the movable tube to move along the surface of the reciprocating screw, the outer surface of the reciprocating screw is fitted with a movable tube through a screw nut, and a movable frame is installed on the upper surface of the movable tube.

[0011] As a preferred embodiment of the sprayed anchor surface smoothing device of this utility model, in order to facilitate the cleaning of the auxiliary pipe surface, a cleaning frame is installed on the lower surface of the movable frame, and a cleaning plate is installed on the outer surface of the cleaning frame.

[0012] In a preferred embodiment of the sprayed anchor surface smoothing device of this utility model, in order to facilitate the rotation of the connecting plate along the support column via the connecting shaft, a square connecting groove is provided inside the support column, and the size of the square connecting groove is larger than the size of the connecting plate.

[0013] The working principle and beneficial effects of this utility model are as follows:

[0014] In this invention, the connecting plate rotates along the support column via the connecting shaft and then contacts the inclined surface via the auxiliary wheel. Compared with the direct smoothing of the prior art, this device can control the movement trajectory and tilt angle of the contact plate, which can prevent the contact plate from floating up and down during the operator's movement and reduce the impact on the operator's normal smoothing of the sprayed anchor surface.

[0015] In this invention, the moving frame moves up and down, causing the cleaning frame to move up and down, which in turn causes the cleaning plate to push the excess concrete up and down to fill in the missing concrete areas. Compared with the prior art, which directly smooths the sprayed anchor surface with a scraper plate, this device can reduce the pits and depressions caused during the movement of the contact plate, and the cleaning plate can smooth out the pits and depressions. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connecting shaft and support column mating structure in this utility model;

[0019] Figure 3 This is a vertical sectional view of the contact plate and auxiliary tube mating structure in this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Support column; 2. Connecting shaft; 3. Connecting pipe; 4. Connecting pin; 5. Connecting plate; 6. Connecting frame; 7. Moving column; 8. Fixing pin; 9. Connecting piece; 10. Contact plate; 11. Auxiliary pipe; 12. Support block; 13. Moving rod; 14. Insert pin; 15. Auxiliary wheel; 16. Blocking piece; 17. Mounting plate; 18. Reciprocating screw; 19. Drive motor; 20. Moving pipe; 21. Moving frame; 22. Cleaning frame; 23. Cleaning plate; 24. Moving handle; 25. Moving plate; 26. Counterweight; 27. Reinforcing plate; 28. Moving wheel; 29. Traction ring. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0023] like Figures 1-4 As shown, this embodiment proposes a spray anchor surface smoothing device, including a support column 1. The support column 1 has a square connecting groove inside. The size of the square connecting groove is larger than the size of the connecting plate 5, which makes it easier for the operator to manipulate the connecting plate 5 to rotate along the support column 1 via the connecting shaft 2. It also includes a connecting shaft 2, a connecting pipe 3, a connecting pin 4, a connecting plate 5, a connecting frame 6, a moving column 7, a fixing pin 8, a connecting piece 9, a contact plate 10, an auxiliary pipe 11, a support block 12, a moving rod 13, a plug pin 14, an auxiliary wheel 15, and a blocking piece 16.

[0024] like Figure 2 and Figure 3As shown, the connecting shaft 2 is rotatably connected to the support column 1. A connecting pipe 3 is installed on the outer side of the support column 1. A connecting pin 4 passes through the outer surface of the connecting pipe 3. One end of the connecting pin 4, which is inserted into the connecting pipe 3, abuts against the connecting shaft 2. The operating connecting plate 5 rotates to the left along the support column 1 via the connecting shaft 2. The rotation of the connecting plate 5 to the left causes the connecting frame 6 to rotate to the left, so that the contact plate 10 rotates to the left and contacts the sprayed anchor surface. The operating connecting pin 4 passes through the connecting pipe 3 and abuts against the connecting shaft 2. The connecting plate 5 is installed on the outer surface of the connecting shaft 2. A connecting frame 6 is installed on the upper surface of the connecting plate 5. A movable column 7 is slidably connected inside the connecting frame 6. A fixing pin 8 passes through the outer side of the connecting frame 6. One end of the fixing pin 8, which is inserted into the first movable column 7 inside the connecting frame 6, is connected to the first movable column 7. A connecting piece 9 is rotatably connected to the outer side of the movable column 7. A contact plate 10 is installed on the side of the connecting piece 9. An auxiliary tube 11 is installed on the outer side of the plate 10. A support block 12 is installed on the side of the contact plate 10. A moving rod 13 passes through the inside of the support block 12. A blocking plate 16 is installed at the bottom end of the moving rod 13. A pin 14 is inserted through the side of the support block 12. One end of the pin 14 that passes through the support block 12 abuts against the moving rod 13. An auxiliary wheel 15 is installed at the top of the moving rod 13. Pull out the pin 14 and manipulate the moving rod 13 to move upward along the support block 12. The upward movement of the moving rod 13 drives the auxiliary wheel 15 to move upward and extend, so that the auxiliary wheel 15 contacts the plane at the top of the sprayed anchor surface. It should be noted that the auxiliary wheel 15 moves to the plane at the top of the sprayed anchor surface. The auxiliary wheel 15 will not detach during the movement. The auxiliary wheel 15 is not a universal wheel, so the auxiliary wheel 15 will not change direction during the movement.

[0025] like Figure 4 As shown, an installation plate 17 is installed inside the auxiliary pipe 11. A reciprocating screw 18 is rotatably connected inside the installation plate 17. A drive motor 19 is installed inside the auxiliary pipe 11. The output end of the drive motor 19 is connected to the bottom end of the reciprocating screw 18. A moving pipe 20 is sleeved on the outer surface of the reciprocating screw 18 through a screw nut. During the rotation of the reciprocating screw 18, the moving pipe 20 is driven to move, so that the moving pipe 20 moves up and down along the surface of the reciprocating screw 18. A moving frame 21 is installed on the upper surface of the moving pipe 20. A cleaning frame 22 is installed on the lower surface of the moving frame 21. A cleaning plate 23 is installed on the outer surface of the cleaning frame 22. It should be noted that the cleaning frame 22 can move along the outer surface of the auxiliary pipe 11, so that the cleaning frame 22 can clean the concrete adhering to the outer surface of the auxiliary pipe 11.

[0026] In this embodiment, as Figure 1As shown, a movable handle 24 is installed on the right side of the support column 1, a movable plate 25 is installed on the lower surface of the support column 1, and a counterweight 26 is provided on the upper surface of the movable plate 25. The function of the counterweight 26 is to prevent the whole device from tipping over during the adjustment of the connecting plate 5 by the operator. A reinforcing plate 27 is installed on the upper surface of the movable plate 25, and the inner side of the reinforcing plate 27 is installed on the outer side of the support column 1. A movable wheel 28 is installed on the lower surface of the movable plate 25, and a traction ring 29 is installed on the outer side of the movable plate 25. It should be noted that when the operator cannot pull the device with the movable handle 24, an external tractor is connected to the traction ring 29 through a connecting hook, and then the device is moved by the external tractor. When the device is moved, the movable handle 24 is first used to pull the device to the level position, the counterweight 26 is placed, and then the device is moved by the external tractor.

[0027] In this embodiment, the operator manipulates the movable handle 24 to move the support column 1 to the initial position of the sprayed anchor surface, pulls out the connecting pin 4, manipulates the connecting plate 5 to rotate to the left along the support column 1 via the connecting shaft 2, the rotation of the connecting plate 5 to the left causes the connecting frame 6 to rotate to the left, the rotation of the connecting frame 6 to the left causes the moving column 7 to rotate to the left, the rotation of the moving column 7 to the left causes the connecting piece 9 to rotate to the left, the rotation of the connecting piece 9 to the left causes the contact plate 10 to rotate to the left, the rotation of the contact plate 10 to the left causes the auxiliary tube 11 to rotate to the left, manipulates the connecting pin 4 to pass through the connecting frame 6 and press against the moving column 7, pulls out the fixing pin 8, and manipulates... The movable column 7 moves to the left along the connecting frame 6. The movement of the movable column 7 to the left causes the connecting piece 9 to move to the left. The movement of the connecting piece 9 to the left causes the contact plate 10 to move to the left, so that the contact plate 10 contacts the spray anchor surface. The fixed pin 8 is operated to pass through the connecting frame 6 and press against the movable column 7. The plug pin 14 is pulled out. The movable rod 13 is operated to move to the left along the support block 12. The movement of the movable rod 13 to the left causes the auxiliary wheel 15 to move to the left. After adjustment, the plug pin 14 is operated to pass through the support block 12 and press against the movable rod 13. After the contact plate 10 contacts the spray anchor surface, the auxiliary wheel 15 contacts the plane at the top of the spray anchor surface.

[0028] The traction ring 29 is connected to the external tractor via the connecting hook. The counterweight 26 is placed on the upper surface of the moving plate 25. The external tractor drives the moving plate 25 forward via the traction ring 29. The moving plate 25 moves forward via the moving wheel 28. The moving plate 25 moves forward, driving the support column 1 forward. The support column 1 moves forward via the connecting shaft 2, driving the connecting plate 5 forward. The connecting plate 5 moves forward, driving the connecting frame 6 forward. The connecting frame 6 moves forward, driving the moving column 7 forward. The moving column 7 moves forward, driving the connecting piece 9 forward. The connecting piece 9 moves forward, driving the contact plate 10 forward. The contact plate 10 moves forward to smooth the sprayed anchor surface. Excess concrete accumulates on the surface of the auxiliary pipe 11 located on the front side. The contact plate 10 moves forward, driving the support block 12 forward. The support block 12 moves forward, driving the moving rod 13 forward. The moving rod 13 moves forward, driving the auxiliary wheel 15 to move along the plane at the top of the sprayed anchor surface, maintaining the contact position between the contact plate 10 and the sprayed anchor surface.

[0029] Start the drive motor 19. The output end of the drive motor 19 rotates, which drives the reciprocating screw 18 to rotate. The rotation of the reciprocating screw 18 drives the moving tube 20 to move back and forth along its surface. The reciprocating movement of the moving tube 20 drives the moving frame 21 to move back and forth. The reciprocating movement of the moving frame 21 drives the cleaning frame 22 to move back and forth. The reciprocating movement of the cleaning frame 22 cleans the surface of the auxiliary tube 11. The reciprocating movement of the cleaning frame 22 drives the cleaning plate 23 to move back and forth, filling the excess concrete to the missing material area.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sprayed anchor surface smoothing device, comprising a support column (1), characterized in that, Also includes: A connecting shaft (2) is rotatably connected inside the support column (1). A connecting pipe (3) is installed on the outer side of the support column (1). A connecting pin (4) is passed through the outer surface of the connecting pipe (3). One end of the connecting pin (4) that passes through the connecting pipe (3) abuts against the connecting shaft (2). A connecting plate (5) is installed on the outer surface of the connecting shaft (2). A connecting frame (6) is installed on the upper surface of the connecting plate (5). A movable column (7) is slidably connected inside the connecting frame (6). A fixing pin (8) is provided on the outer side of the connecting frame (6). One end of the fixing pin (8) is inserted into the first movable column (7) inside the connecting frame (6). A connecting piece (9) is rotatably connected to the outer side of the movable column (7). A contact plate (10) is installed on the side of the connecting piece (9), and an auxiliary tube (11) is installed on the outer side of the contact plate (10). A support block (12) is installed on the side of the contact plate (10). A moving rod (13) passes through the inside of the support block (12). A blocking plate (16) is installed at the bottom end of the moving rod (13). A plug pin (14) passes through the side of the support block (12). One end of the plug pin (14) that passes through the support block (12) abuts against the moving rod (13). An auxiliary wheel (15) is installed at the top end of the moving rod (13).

2. The spray-anchor surface smoothing device according to claim 1, characterized in that, An installation plate (17) is installed inside the auxiliary tube (11), and a reciprocating screw (18) is rotatably connected inside the installation plate (17).

3. The spray-anchor surface smoothing device according to claim 2, characterized in that, The auxiliary tube (11) is equipped with a drive motor (19), and the output end of the drive motor (19) is connected to the bottom end of the reciprocating screw (18).

4. The sprayed anchor surface smoothing device according to claim 3, characterized in that, The outer surface of the reciprocating screw (18) is fitted with a moving tube (20) through a screw nut, and a moving frame (21) is installed on the upper surface of the moving tube (20).

5. The spray-anchor surface smoothing device according to claim 4, characterized in that, A cleaning frame (22) is installed on the lower surface of the mobile frame (21), and a cleaning plate (23) is installed on the outer surface of the cleaning frame (22).

6. The spray-anchor surface smoothing device according to claim 1, characterized in that, The support column (1) has a square connecting groove inside, and the size of the square connecting groove is larger than the size of the connecting plate (5).