A support device for rapid installation of tunnel steel arch frame

Abstract

The present invention provides a support device for the rapid installation of a tunnel steel arch frame, comprising a device body, a height adjustment mechanism, a fixing mechanism, and a clamping mechanism. The fixing mechanism comprises a fixed base and a steel nail. The fixed base is provided with a plurality of mounting holes. The steel nail is fixed on the ground through the mounting holes. The device body comprises a load-bearing rod and a connecting plate. The bottom of the load-bearing rod is a hollow structure. The height adjustment mechanism comprises a transmission rod, a spring block, and a decompression spring. The clamping mechanism comprises a transverse plate arranged above the device body. A fixing plate and a push plate are arranged on the transverse plate. A fixing seat is arranged on the side of the push plate. A pull rod is arranged on the fixing seat. A handle is arranged on the end face of the pull rod. A slide groove is arranged on the transverse plate. The push plate is slidably arranged in the slide groove. The present invention can realize the fixed clamping of the steel arch frame, has high safety performance, and has a long service life. It protects the personal safety of workers, has high use value, and has broad development prospects.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel steel arch frame installation, and in particular relates to a supporting device for rapid installation of a tunnel steel arch frame. Background Art

[0002] After tunnel excavation, in order to effectively restrain and control the deformation of the surrounding rock and enhance the stability of the surrounding rock, some tunnels need to erect circumferential steel supports in the initial support, also known as steel arch frames. They are special circumferential I-beams or other steel sections used to protect and enhance the strength and self-stabilization ability of the surrounding rock. The installation process of the initial support steel arch frame of the tunnel relies entirely on manual support and operation, and the construction risk is relatively high.

[0003] At present, the supporting devices used for the rapid installation of tunnel steel arch frames generally cannot effectively adjust the height changes. Since the steel arch frames are too heavy, the ground in the tunnel is unstable when supporting, and the terrain is high and low. The supporting devices need to be fixed at different heights according to different ground conditions, which can easily cause fatigue of the workers' hand muscles and the installation efficiency is low. At the same time, the supporting device needs to fix the steel arch frame, and the upper part cannot effectively fix the steel arch frame, which can easily cause slipping and a high construction risk.

[0004] Therefore, how to design a support device for the rapid installation of tunnel steel arch frames has become a problem to be solved at present. Summary of the invention

[0005] In order to solve the problem in the background art that manual assembly according to different terrains and insufficient support and fixation are required, the present invention provides a support device for rapid installation of tunnel steel arch frames.

[0006] The technical solution of the present invention is: a supporting device for rapid installation of a tunnel steel arch frame, comprising a device body, a height adjustment mechanism arranged at the bottom of the device body, a fixing mechanism arranged at the bottom of the height adjustment mechanism, and a clamping mechanism arranged at the top of the device body;

[0007] The fixing mechanism includes a fixing base and steel nails arranged on the fixing base. The fixing base is provided with a plurality of mounting holes, and the steel nails are fixed on the ground through the mounting holes.

[0008] The device body comprises a load-bearing rod and a connecting plate arranged inside the load-bearing rod, and the bottom of the load-bearing rod is a hollow structure for accommodating a height adjustment mechanism;

[0009] The height adjustment mechanism includes a transmission rod fixed at the bottom of the connecting plate of the device body, a spring block fixed at the bottom of the transmission rod, and a decompression spring connected around the transmission rod. The transmission rod can drive the load-bearing rod to adjust its height, so as to adapt to the internal construction environment of the tunnel with different heights.

[0010] The clamping mechanism includes a transverse plate arranged above the device body, a fixed plate and a push plate are arranged on the transverse plate, a fixed seat is arranged on the side of the push plate, a pull rod is arranged on the fixed seat, a handle is arranged on the end face of the pull rod, a slide groove is arranged on the transverse plate, and the push plate is slidably arranged in the slide groove, so as to realize the adjustment of the distance between the push plate and the fixed plate and realize the clamping and fixation of the steel arch frame.

[0011] Furthermore, in order to lock the position of the push plate, metal clamps are provided on both sides of the bottom of the fixing plate, and a plurality of screw holes are provided on the metal clamps. A connecting block is provided inside the handle, and ball screws are provided at both ends of the handle. The ball screws are arranged at both ends of the connecting block through a return spring. The pull rod is rotatably connected with the fixing seat through a rotating shaft. When in use, the handle is rotated to the screw hole of the metal clamp by the pull rod, and the ball screws on both sides of the handle are embedded in the screw holes. The ball screws are retracted and extended by the return spring. When on the inside of the metal clamp, the ball screw is squeezed back into the handle. When it reaches the screw hole, the ball screw is ejected by the return spring and embedded in the screw hole in the handle, thereby completing the fixation of the push plate position, and then realizing the fixation of the steel arch frame, thereby improving the safety performance of the device.

[0012] Furthermore, in order to improve the grip of the fixed base and enhance the fixing stability of the entire device, barb rings are fixed around the bottom of the steel nail. The barb rings are arranged in four groups, and the four groups of barb rings are arranged in sequence along the height direction of the steel nail.

[0013] Furthermore, a protective layer is provided in the installation hole, and the protective layer can protect the fixed base and prevent the fixed base from being damaged during the installation of the steel nail.

[0014] Furthermore, a rubber base is provided at the bottom of the spring block, and the rubber base is fixedly connected to the top of the fixed base. The area of ​​the rubber base is larger than the cross-sectional area of ​​the bottom of the load-bearing rod, thereby avoiding damage to the load-bearing rod during the height adjustment process and extending the service life of the entire device.

[0015] Furthermore, the fixing plate, the pushing plate, the pulling rod and the handle are arranged in sequence from left to right along the top of the device body.

[0016] Furthermore, a slider is provided at the contact end of the push plate and the transverse plate, and the slider is slidably arranged in the slide groove to drive the push plate to move transversely.

[0017] Furthermore, the decompression spring is of irregular shape, and the decompression spring, the transmission rod, the spring block and the rubber base are linked and connected.

[0018] Furthermore, the screw hole is arranged in an arc shape on the metal clamping plate, which is consistent with the movement trajectory of the pull rod.

[0019] Furthermore, the pull rod and the handle are arranged perpendicularly in a T-shape.

[0020] Furthermore, the transmission rod includes a sleeve and a telescopic rod arranged in the sleeve.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention supports the steel arch frame through the fixing plate and the pushing plate when in use. The steel arch frame is placed between the fixing plate and the pushing plate when in use. The pushing plate changes size through the sliding groove. In order to prevent the pushing plate from being too large or too small and causing the steel arch frame to slide down, thereby causing a construction accident, a locking mechanism is provided. When in use, the handle is pulled to the screw hole of the metal clamping plate through the pull rod, and the ball screws on both sides of the handle are embedded in the screw hole and extended and retracted through the return spring. When the ball screw is on the inner side of the metal clamping plate, it is squeezed back into the handle. When it reaches the screw hole, the ball screw is ejected from the handle by the return spring and embedded in the screw hole, thereby completing the fixing of the steel arch frame, thereby improving the safety performance of the device, thereby protecting the personal safety of the workers and improving the use value of the device;

[0023] 2. When the present invention is in use, the device needs to be installed on a steel arch frame inside the tunnel. The device body and the spring block are connected by a transmission rod. When the ground inside the tunnel is uneven, there is a partial distance between the device body and the spring block. The transmission rod drives the decompression spring and the support device is installed according to different terrains. The height of the device can be effectively changed, thereby further saving time. At the same time, in order to prevent the device body from colliding with the bottom and causing damage to the device, a rubber base is provided on the base, which can effectively prevent the device from colliding during support, thereby extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a support device for rapid installation of a tunnel steel arch frame according to the present invention;

[0025] Figure 2 It is a schematic overall cross-sectional view of a support device for rapid installation of a tunnel steel arch frame according to the present invention;

[0026] Figure 3 It is a schematic diagram of the installation of a ball screw of a support device for rapid installation of a tunnel steel arch frame according to the present invention;

[0027] Figure 4 It is an enlarged schematic diagram of the structure at position A of a support device for rapid installation of a tunnel steel arch frame according to the present invention;

[0028] Among them: 1. load-bearing rod, 2. fixed plate, 3. pull rod, 4. transverse plate, 5. metal splint, 6. screw hole, 7. fixed base, 8. push plate, 9. fixed seat, 10. handle, 11. slide groove, 12. connecting plate, 13. transmission rod, 14. decompression spring, 15. spring block, 16. rubber base, 17. ball screw, 18. return spring, 19. connecting block, 20. steel nail, 21. protective layer, 22. barb ring. DETAILED DESCRIPTION

[0029] The present invention is described clearly and completely below in conjunction with the accompanying drawings so that those skilled in the art can fully implement the present invention without having to make any creative work.

[0030] The embodiment of the present invention is: Figure 1-4 As shown, a supporting device for quick installation of a tunnel steel arch frame comprises a device body, a height adjustment mechanism arranged at the bottom of the device body, a fixing mechanism arranged at the bottom of the height adjustment mechanism, and a clamping mechanism arranged at the top of the device body;

[0031] The fixing mechanism includes a fixing base 7 and a steel nail 20 arranged on the fixing base 7. The fixing base 7 is provided with a plurality of mounting holes, and the steel nail 20 passes through the mounting holes and is fixed on the ground;

[0032] The device body comprises a load-bearing rod 1 and a connecting plate 12 arranged inside the load-bearing rod 1. The bottom of the load-bearing rod 1 is a hollow structure for accommodating a height adjustment mechanism.

[0033] The height adjustment mechanism includes a transmission rod 13 fixed at the bottom of a connecting plate 12 of the device body, a spring block 15 fixed at the bottom of the transmission rod 13, and a decompression spring 14 connected around the transmission rod 13. The transmission rod 13 can drive the load-bearing rod 1 to adjust its height, so as to adapt to the different internal construction environments of the tunnel;

[0034] The clamping mechanism includes a transverse plate 4 arranged above the device body, a fixed plate 2 and a push plate 8 are provided on the transverse plate 4, a fixed seat 9 is provided on the side of the push plate 8, a pull rod 3 is provided on the fixed seat 9, a handle 10 is provided on the end face of the pull rod 3, the pull rod 3 and the handle 10 are vertically arranged in a T shape, a slide groove 11 is provided on the transverse plate 4, a slider is provided at the contact end of the push plate 8 and the transverse plate 4, the slider is slidably arranged in the slide groove 11 to drive the push plate 8 to move laterally, thereby realizing the adjustment of the distance between the push plate 8 and the fixed plate 2, and realizing the clamping and fixation of the steel arch frame.

[0035] In order to lock the position of the push plate 8, the present invention has metal clamping plates 5 on both sides of the bottom of the fixing plate 2, and a plurality of screw holes 6 are provided on the metal clamping plates 5. A connecting block 19 is provided inside the handle 10, and ball screws 17 are provided at both ends of the handle. The ball screws 17 are arranged at both ends of the connecting block 19 through a return spring 18. The pull rod 3 is rotatably connected to the fixing seat 9 through a rotating shaft. When in use, the handle 10 is rotated to the screw hole 6 of the metal clamping plate 5 through the pull rod 3, and the ball screws 17 on both sides of the handle 10 are embedded in the screw hole 6. The ball screws 17 are retracted and extended by the return spring 18. When on the inner side of the metal clamping plate 5, the ball screw 17 is squeezed back into the handle 10. When it reaches the screw hole 6, the ball screw 17 is ejected from the handle 10 by the return spring 18 and embedded in the screw hole 6, thereby completing the fixation of the push plate 8 and then realizing the fixation of the steel arch frame, thereby improving the safety performance of the device.

[0036] In order to improve the gripping force of the fixed base 7 and enhance the fixing stability of the entire device, the present invention has barb rings 22 fixed around the bottom of the steel nail 20. The barb rings 22 are arranged in four groups, and the four groups of barb rings 22 are arranged in sequence around the height direction of the steel nail 20.

[0037] A protective layer 21 is provided in the installation hole of the present invention, and the protective layer 21 can protect the fixed base 7 and prevent the fixed base 7 from being damaged during the installation of the steel nail 20.

[0038] A rubber base 16 is provided at the bottom of the elastic block 15 of the present invention, and the rubber base 16 is fixedly connected to the top of the fixed base 7. The area of ​​the rubber base 16 is larger than the cross-sectional area of ​​the bottom of the load-bearing rod 1, thereby avoiding damage to the load-bearing rod 1 during the height adjustment process and extending the service life of the entire device.

[0039] The fixing plate 2, the pushing plate 8, the pulling rod 3 and the handle 10 of the present invention are arranged in sequence from left to right along the top of the device body.

[0040] The decompression spring 14 of the present invention is irregular in shape, and the decompression spring 14 , the transmission rod 13 , the spring block 15 and the rubber base 16 are linked and connected.

[0041] The transmission rod 13 of the present invention comprises a sleeve and a telescopic rod arranged in the sleeve.

[0042] The screw hole 6 of the present invention is arranged in an arc shape on the metal clamping plate 5 , which is consistent with the movement trajectory of the pull rod 3 .

[0043] The working principle of the present invention is: first, when in use, the device body is fixed to the tunnel surface, and the steel nail 20 is fixed to the ground through the mounting hole of the fixed base 7, and the gripping force on the ground is increased by the barb ring 22 fixed at the bottom of the steel nail 20. After gripping, in order to prevent the bottom of the fixed base 7 from being damaged by the barbs, resulting in a reduction in the service life and waste, a protective layer 21 is provided on the inner surface of the mounting hole of the fixed base 7, thereby effectively protecting the firmness of the device body. After fixing, in order to prevent the steel arch frame from slipping due to the large spacing between the push plate 8 and the fixed plate 2, causing a construction accident, a locking mechanism is provided on the device body. When in use, the steel arch frame is placed between the fixed plate 2 and the push plate 8, and the push plate 8 is first pushed through the slide groove 10 to move and clamp the steel frame, and then the handle 10 is rotated to the screw hole 6 of the metal clamp plate 5 by rotating the pull rod 3. The ball screw 17 is retracted and extended by the return spring 18. When it is on the inner side of the metal splint 5, the ball screw 17 is squeezed back into the handle 10. When it reaches the screw hole 6, the ball screw 17 is ejected by the return spring 18 and embedded in the screw hole 6. In this way, the screw hole 6 at a suitable position can be selected according to the size of the steel arch frame to be clamped, so as to complete the fixation of the steel arch frame. The device body and the spring block 15 are connected by the transmission rod 13. When the height inside the tunnel is different, there is a partial distance between the device body and the spring block 15. The decompression spring 14 is driven by the transmission rod 13 to install the support device according to different terrains. The height of the device can be effectively changed, a lot of time is saved, and the construction efficiency is improved. At the same time, in order to prevent the device body from colliding with the bottom and causing damage to the device, a rubber base 16 is provided. When supporting, the device can be effectively prevented from being damaged by collision.

[0044] The preferred embodiments of the present invention are described above. It should be pointed out that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; any simple modifications, equivalent changes and modifications made to the above embodiments by any technician familiar with the art based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A support device for rapid installation of tunnel steel arch frame, characterized in that: It includes a device body, a height adjustment mechanism arranged at the bottom of the device body, a fixing mechanism arranged at the bottom of the height adjustment mechanism, and a clamping mechanism arranged at the top of the device body; The fixing mechanism includes a fixing base and steel nails arranged on the fixing base. The fixing base is provided with a plurality of mounting holes, and the steel nails are fixed on the ground through the mounting holes. The device body comprises a load-bearing rod and a connecting plate arranged inside the load-bearing rod, and the bottom of the load-bearing rod is a hollow structure; The height adjustment mechanism includes a transmission rod fixed to the bottom of the connecting plate of the device body, a spring block fixed to the bottom of the transmission rod, and a decompression spring connected around the transmission rod; The clamping mechanism comprises a transverse plate arranged above the device body, a fixed plate and a push plate are arranged on the transverse plate, a fixed seat is arranged on the side of the push plate, a pull rod is arranged on the fixed seat, a handle is arranged on the end face of the pull rod, the pull rod and the handle are arranged vertically in a T shape, a slide groove is arranged on the transverse plate, and the push plate is slidably arranged in the slide groove; Metal clamping plates are provided on both sides of the bottom of the fixing plate, and a plurality of screw holes are provided on the metal clamping plates. A connecting block is provided inside the handle, and ball screws are provided at both ends of the handle. The ball screws are arranged at both ends of the connecting block through a return spring, and the pull rod is rotatably connected with the fixing seat through a rotating shaft; barb rings are fixed around the bottom of the steel nail, and the barb rings are arranged in four groups, and the four groups of barb rings are arranged in sequence around the height direction of the steel nail; a protective layer is provided in the mounting hole; a rubber base is provided at the bottom of the spring block, and the rubber base is fixed to the fixing base The top is fixedly connected, and the area of ​​the rubber base is larger than the cross-sectional area of ​​the bottom of the load-bearing rod; the fixed plate, push plate, pull rod and handle are arranged in sequence from left to right along the top of the device body; a slider is provided at the contact end of the push plate and the transverse plate, and the slider is slidably arranged in the slide groove to drive the push plate to move laterally; the decompression spring is irregular in shape, and the decompression spring, transmission rod, spring block are linked to the rubber base; the screw hole is arranged in an arc shape on the metal splint, which is consistent with the movement trajectory of the pull rod; the transmission rod includes a sleeve and a telescopic rod arranged in the sleeve.

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