A protective support device for tunnel construction

Abstract

The utility model discloses a protective support device for tunnel construction. The utility model includes a top support plate, and side support plates are slidably installed on both sides of the bottom of both sides of the top support plate, and a telescopic structure is installed on the bottom of the side support plate away from the top support plate. A base is installed at the bottom of the telescopic structure, and universal wheels are rotatably installed at the four top corners of the bottom of the base. The utility model is provided with universal wheels on the base to facilitate the staff to carry the support. At the same time, when the support is unfolded, the staff only needs to push the two telescopic structures in the opposite direction to unfold the top support plate and the side support plate, and the telescopic structure can drive the top support plate and the side support plate to rise, so as to support the inner wall of the tunnel. It is convenient to carry, simple to operate, and saves time and effort.

Description

Technical Field

[0001] The utility model relates to the technical field of construction equipment, in particular to a protective support device used for tunnel construction. Background Art

[0002] Subway is a form of rail transportation, referring to the urban rail transit system that mainly runs underground, namely "underground railway" or "subway". When building underground railways in cities, the construction method is greatly affected by factors such as ground buildings, roads, urban traffic and financial conditions. During construction, it is necessary to support and protect the tunnel while constructing it to prevent tunnel collapse and surface subsidence during construction, and reduce the impact on existing buildings.

[0003] There are two types of existing supports. One is assembly-type support, which requires workers to assemble and splice it in the construction tunnel. When reinforcing the inner wall of the tunnel, manual operation is required to dismantle the support. Assembly and disassembly are time-consuming and laborious. The other is folding-type support. Due to its large size, this type of support is very inconvenient to carry. When the folding-type support is unfolded, a large number of people are required and the operation is cumbersome. Utility Model Content

[0004] The purpose of the utility model is to provide a protective support device for tunnel construction to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective support device for tunnel construction, comprising a top support plate, side support plates are slidably installed on both sides of the bottom of both sides of the top support plate, a telescopic structure is installed on the bottom of the side support plate away from the top support plate, a base is installed at the bottom of the telescopic structure, and universal wheels are rotatably installed at the four top corners of the bottom of the base.

[0006] By adopting the above technical solution, the top support plate and the side support plate are slid and folded, and the telescopic structure can drive the top support plate and the side support plate to rise or fall, so that the top support plate and the side support plate can be close to the top of the inner wall of the tunnel, and the universal wheels on the base make it convenient for the staff to carry the support device, and the user pushes the telescopic structure in the reverse direction to facilitate the unfolding of the top support plate and the side support plate.

[0007] Preferably, the top support plate comprises an arc-shaped plate, a connecting plate is installed at the bottom of the arc-shaped plate, limiting members are installed on both sides of the two ends of the connecting plate, the side support plate comprises a connecting block, a limiting plate is installed on the top of the connecting block, and limiting grooves are installed at both ends of the limiting plate.

[0008] By adopting the above technical solution, the top support plate and the side support plate can prevent the top support plate from falling off when the side support plate slides through the cooperation between the limiting member and the limiting groove.

[0009] Preferably, a sliding groove is provided on the top of the limiting plate, the size of the sliding groove on the limiting plate is matched with the size of the connecting plate, the limiting plate is slidably connected to the connecting plate through the sliding groove, the size of the limiting member is matched with the size of the limiting groove, a clamping groove is provided on the side of the limiting groove close to the top support plate, the size of the clamping groove on the limiting groove is matched with the size of the limiting member, and the limiting groove is clamped with the limiting member through the clamping groove.

[0010] By adopting the above technical solution, through the cooperation between the clamping groove and the limiting member, the top support plate and the side support plates can be clamped between the side support plates after they are unfolded.

[0011] Preferably, the telescopic structure includes an inner support frame, an outer support frame is installed on the outer surface of the inner support frame, a lifting plate is slidably installed inside the inner support frame, support rods are installed at the four top corners of the top of the lifting plate, a screw rod is rotatably installed in the middle position of the top of the lifting plate, a support plate and a hydraulic cylinder are installed at the bottom end of the inner support frame, servo motors are installed on both sides of the bottom of the support plate, side gears are installed at the output end of the servo motor, and a main gear is rotatably installed in the middle position of the top of the support plate.

[0012] By adopting the above technical solution, the telescopic structure drives the screw to rotate through the servo motor, so that the lifting plate can rise or fall along the screw, driving the support rod on the lifting plate to push the outer support frame to rise and fall on the inner support frame. A control device is arranged on the base, and the servo motor and the hydraulic cylinder are electrically connected, and the servo motor and the hydraulic cylinder can be controlled by the control device.

[0013] Preferably, the outer support frame and the inner support frame are socketed with each other, the top of the support rod passes through the top of the inner support frame and is connected to the top of the inner part of the outer support frame, the bottom of the screw rod passes through the support plate and is connected to the top of the main gear, and the side gear is meshed with the main gear.

[0014] By adopting the above technical solution, the side gear and the main gear are meshed, and the servo motor drives the side gear to rotate, thereby driving the main gear to rotate, so that the lead screw can rotate accordingly.

[0015] Preferably, the output end of the hydraulic cylinder passes through the inner support frame and the bottom of the base, and a spike cone is provided at the output end of the hydraulic cylinder.

[0016] By adopting the above technical solution, after the support is deployed, the user pushes the spike cone to move through the output of the hydraulic cylinder output end, so that the spike cone can penetrate into the soil, thereby improving the stability of the support.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: the protective support device used for tunnel construction is provided with universal wheels on the base, which is convenient for workers to carry and support. At the same time, when the support is deployed, the workers only need to push the two telescopic structures in opposite directions to deploy the top support plate and the side support plate, and the telescopic structure can drive the top support plate and the side support plate to rise, thereby supporting the inner wall of the tunnel. It is easy to carry and simple to operate, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the front view of the utility model;

[0019] Figure 2 This is a front view cross-sectional diagram of the internal structure of the utility model;

[0020] Figure 3 This is a three-dimensional diagram of the top support plate of the utility model;

[0021] Figure 4 This is a three-dimensional diagram of the side support plate of the utility model;

[0022] Figure 5 For this utility model Figure 2 A magnified view of the structure in the middle.

[0023] In the figure: 1. top support plate; 10. arc plate; 11. connecting plate; 12. limiter; 2. side support plate; 20. connecting block; 21. limiter plate; 22. limiter groove; 3. telescopic structure; 30. inner support frame; 31. outer support frame; 32. lifting plate; 33. support rod; 34. screw rod; 35. support plate; 36. servo motor; 37. side gear; 38. main gear; 39. hydraulic cylinder; 4. base. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5The utility model provides an embodiment: a protective support device for tunnel construction, including a top support plate 1, side support plates 2 are slidably installed on both sides of the bottom of both sides of the top support plate 1, a telescopic structure 3 is installed on the bottom of the side support plate 2 away from the top support plate 1, a base 4 is installed at the bottom of the telescopic structure 3, and universal wheels are rotatably installed at the four top corners of the bottom of the base 4. The top support plate 1 and the side support plate 2 slide and fold, and the telescopic structure 3 can drive the top support plate 1 and the side support plate 2 to rise or fall, so that the top support plate 1 and the side support plate 2 can be close to the top of the inner wall of the tunnel, and the universal wheels on the base 4 are convenient for the staff to carry the support device, and the user pushes the telescopic structure 3 in the opposite direction to facilitate the deployment of the top support plate 1 and the side support plate 2.

[0026] In this embodiment, the top support plate 1 includes an arc-shaped plate 10, a connecting plate 11 is installed at the bottom of the arc-shaped plate 10, and limiting members 12 are installed on both sides of the two ends of the connecting plate 11. The side support plate 2 includes a connecting block 20, a limiting plate 21 is installed on the top of the connecting block 20, and limiting grooves 22 are installed at both ends of the limiting plate 21. The top support plate 1 and the side support plate 2 can prevent the top support plate 1 from falling off when the side support plate 2 slides through the cooperation between the limiting member 12 and the limiting groove 22.

[0027] In this embodiment, a sliding groove is provided on the top of the limiting plate 21, and the size of the sliding groove on the limiting plate 21 is adapted to the size of the connecting plate 11. The limiting plate 21 is slidably connected to the connecting plate 11 through the sliding groove, and the size of the limiting member 12 is adapted to the size of the limiting groove 22. A clamping groove is provided on the side of the limiting groove 22 close to the top support plate 1, and the size of the clamping groove on the limiting groove 22 is adapted to the size of the limiting member 12. The limiting groove 22 is clamped with the limiting member 12 through the clamping groove. Through the cooperation between the clamping groove and the limiting member 12, the top support plate 1 and the side support plate 2 can be clamped between the side support plates 2 after they are unfolded.

[0028] In the present embodiment, the telescopic structure 3 comprises an inner support frame 30, an outer support frame 31 is installed on the outer surface of the inner support frame 30, a lifting plate 32 is slidably installed inside the inner support frame 30, support rods 33 are installed at the four top corners of the top of the lifting plate 32, a screw rod 34 is rotatably installed at the middle position of the top of the lifting plate 32, a support plate 35 and a hydraulic cylinder 39 are installed at the bottom end of the inner support frame 30, servo motors 36 are installed on both sides of the bottom of the support plate 35, side gears 37 are installed at the output end of the servo motor 36, and a main gear 38 is rotatably installed at the middle position of the top of the support plate 35. The telescopic structure 3 drives the screw rod 34 to rotate through the servo motor 36, so that the lifting plate 32 can rise or fall along the screw rod 34, driving the support rod 33 on the lifting plate 32 to push the outer support frame 31 to rise and fall on the inner support frame 30, and a control device is provided on the base 4, the servo motor 36 and the hydraulic cylinder 39 are electrically connected, and the servo motor 36 and the hydraulic cylinder 39 can be controlled by the control device.

[0029] In this embodiment, the outer support frame 31 and the inner support frame 30 are socketed with each other, the top of the support rod 33 passes through the top of the inner support frame 30 and is connected to the top of the inner part of the outer support frame 31, the bottom of the screw rod 34 passes through the support plate 35 and is connected to the top of the main gear 38, the side gear 37 is meshed with the main gear 38, and the servo motor 36 drives the side gear 37 to rotate, thereby driving the main gear 38 to rotate, so that the screw rod 34 can rotate accordingly.

[0030] In this embodiment, the output end of the hydraulic cylinder 39 passes through the bottom of the inner support frame 30 and the base 4. The output end of the hydraulic cylinder 39 is provided with a spike. After the support is deployed, the user pushes the spike to move through the output of the output end of the hydraulic cylinder 39 so that the spike can penetrate into the soil, thereby improving the stability of the support.

[0031] Working principle: When the staff installs the support device, the user pushes the two telescopic structures 3 in opposite directions to drive the side support plates 2 to move, so that the top support plate 1 can move on the side support plates 2, and then through the card slot and the limit member 12, the top support plate 1 and the side support plate 2 can form an arc-shaped support plate. Then the staff starts the servo motor 36, and the servo motor 36 can drive the side gear 37 to rotate, drive the main gear 38 to rotate, and make the screw rod 34 rotate accordingly, and the lifting plate 32 can rise along the screw rod 34. At the same time, the support rod 33 can push the outer support frame 31 to move on the inner support frame 30, pushing the arc-shaped support plate to rise and fit tightly against the top of the inner wall of the tunnel. When the support device needs to be disassembled, the user operates in reverse, which is convenient and quick.

[0032] For those skilled in the art, the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or scope of the present invention. Therefore, the embodiments of the present invention are exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A protective support device for tunnel construction, comprising a top support plate (1), characterized in that: Side support plates (2) are slidably mounted on both sides of the bottom of both sides of the top support plate (1); a telescopic structure (3) is mounted on the bottom of the side support plate (2) away from the top support plate (1); a base (4) is mounted on the bottom of the telescopic structure (3); and universal wheels are rotatably mounted at the four top corners of the bottom of the base (4).

2. A protective support device for tunnel construction according to claim 1, characterized in that: The top support plate (1) comprises an arc-shaped plate (10), a connecting plate (11) is installed at the bottom of the arc-shaped plate (10), and limiting members (12) are installed on both sides of both ends of the connecting plate (11), and the side support plate (2) comprises a connecting block (20), a limiting plate (21) is installed on the top of the connecting block (20), and limiting grooves (22) are installed on both ends of the limiting plate (21).

3. A protective support device for tunnel construction according to claim 2, characterized in that: A sliding groove is provided on the top of the limiting plate (21), the size of the sliding groove on the limiting plate (21) is matched with the size of the connecting plate (11), the limiting plate (21) is slidably connected to the connecting plate (11) via the sliding groove, the size of the limiting member (12) is matched with the size of the limiting groove (22), a clamping groove is provided on a side of the limiting groove (22) close to the top support plate (1), the size of the clamping groove on the limiting groove (22) is matched with the size of the limiting member (12), and the limiting groove (22) is clamped with the limiting member (12) via the clamping groove.

4. A protective support device for tunnel construction according to claim 1, characterized in that: The telescopic structure (3) comprises an inner support frame (30), an outer support frame (31) is mounted on the outer surface of the inner support frame (30), a lifting plate (32) is slidably mounted inside the inner support frame (30), support rods (33) are mounted at four top corners of the top of the lifting plate (32), a screw rod (34) is rotatably mounted at the middle position of the top of the lifting plate (32), a support plate (35) and a hydraulic cylinder (39) are mounted at the bottom end of the inner support frame (30), servo motors (36) are mounted on both sides of the bottom of the support plate (35), a side gear (37) is mounted at the output end of the servo motor (36), and a main gear (38) is rotatably mounted at the middle position of the top of the support plate (35).

5. A protective support device for tunnel construction according to claim 4, characterized in that: The outer support frame (31) and the inner support frame (30) are sleeved together, the top of the support rod (33) passes through the top of the inner support frame (30) and is connected to the top of the inner part of the outer support frame (31), the bottom of the screw rod (34) passes through the support plate (35) and is connected to the top of the main gear (38), and the side gear (37) is meshed with the main gear (38).

6. A protective support device for tunnel construction according to claim 4, characterized in that: The output end of the hydraulic cylinder (39) passes through the bottom of the inner support frame (30) and the base (4), and a spike cone is provided at the output end of the hydraulic cylinder (39).

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