Layered surrounding rock tunnel supporting device

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a layered surrounding rock tunnel supporting device. Comprising foot stools, first hydraulic telescopic cylinders, lifting columns, a top plate, foot pads, screws, bearings, rollers, a base, second hydraulic telescopic cylinders and supporting plates, the multiple foot stools are symmetrically arranged, the first hydraulic telescopic cylinders are arranged on the inner side walls of the foot stools, and the lifting columns are fixedly connected with the output ends of the first hydraulic telescopic cylinders and slidably arranged on the outer side walls of the foot stools; the top plate is fixedly connected with the top of the lifting column, the foot pad is fixedly connected with the foot stand, the screw rod is in threaded connection with the foot pad, the bearing is fixedly connected with the screw rod, the roller is fixedly connected with the bottom of the bearing, the base is fixedly connected with the foot stand, the second hydraulic telescopic cylinder is fixedly connected with the base, and the supporting plate is fixedly connected with the output end of the second hydraulic telescopic cylinder. By means of the structure, the layered surrounding rock tunnel supporting device can be conveniently moved in a tunnel, and the tunnel supporting construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a layered surrounding rock tunnel supporting device. Background Art

[0002] Layered surrounding rock is common in tunnel construction and generally has poor stability, especially horizontal thin-layered surrounding rock, which has extremely poor self-stabilization ability and is prone to sliding shear failure along the bedding plane under deadweight and stress conditions. The arch is prone to block falling, peeling, and collapse, which seriously threatens the safety of tunnel construction. At the same time, the arch is prone to flattening, over-excavation, under-excavation, and excavation contours are difficult to control, affecting the quality of subsequent construction and increasing construction costs. In order to ensure construction safety and control excavation quality, and prevent over-excavation and collapse after blasting, a good lining support structure must be built.

[0003] During the tunnel construction process, a support structure is needed to support the inner wall of the tunnel. The existing layered rock tunnel support device needs to be spliced ​​when used in the tunnel, and the process is extremely cumbersome. The spliced ​​layered rock tunnel support device cannot be moved in the tunnel, which affects the efficiency of the tunnel support construction. Utility Model Content

[0004] The utility model aims to provide a layered surrounding rock tunnel support device, which solves the problem that the layered surrounding rock tunnel support device cannot move in the tunnel, thus affecting the efficiency of tunnel support construction.

[0005] To achieve the above-mentioned purpose, the utility model adopts a layered rock tunnel support device, including a tripod, a first hydraulic telescopic cylinder, a lifting column, a top plate, a foot pad, a screw, a bearing, a roller, a base, a second hydraulic telescopic cylinder and a support plate. The multiple tripods are symmetrically arranged, and the inner side wall of each tripod is provided with the first hydraulic telescopic cylinder, the lifting column is fixedly connected to the output end of the first hydraulic telescopic cylinder and is slidably arranged on the outer side wall of the tripod, the top plate is fixedly connected to the top of the lifting column, the foot pad is fixedly connected to the tripod and is located on the outer side wall of the tripod, the foot pad has a thread, the screw is threadedly connected to the foot pad and passes through the foot pad, the bearing is fixedly connected to the screw and is located below the foot pad, the roller is fixedly connected to the bottom of the bearing, the base is fixedly connected to the tripod and is located on the outer side wall of the tripod, the second hydraulic telescopic cylinder is fixedly connected to the base, and the support plate is fixedly connected to the output end of the second hydraulic telescopic cylinder.

[0006] Wherein, the layered surrounding rock tunnel supporting device also includes a beam frame, which is fixedly connected to the top plate and is located on the inner side wall of the top plate.

[0007] Wherein, the layered surrounding rock tunnel supporting device also includes a connecting block, and the connecting block is arranged between two adjacent tripods.

[0008] Wherein, the layered surrounding rock tunnel supporting device also includes a stabilizing plate, which is fixedly connected to the foot frame and is located at the bottom of the foot pad, and the stabilizing plate is a triangular structure.

[0009] Wherein, the layered surrounding rock tunnel supporting device also includes a plug and a rotary handle, wherein the plug is arranged on the top of the screw rod, and the rotary handle is fixedly connected to the plug and is located on the outer side wall of the plug.

[0010] Wherein, the layered surrounding rock tunnel supporting device also includes a spring, and the spring is sleeved on the outer side wall of the screw rod, and the two ends of the spring are respectively connected to the plug and the foot pad.

[0011] Among them, the layered surrounding rock tunnel supporting device also includes a ground mat and a limiting nail. The ground mat is fixedly connected to the support plate and is located on the outer side wall of the support plate. The limiting nail passes through the ground mat.

[0012] The utility model discloses a layered rock tunnel support device, by setting the first hydraulic telescopic cylinder and the second hydraulic telescopic cylinder, the outer side of the first hydraulic telescopic cylinder is fixedly connected to the tripod, the output end of the first hydraulic telescopic cylinder is fixedly connected to the lifting column, the outer side of the lifting column is slidably connected to the tripod, the top of the lifting column is fixedly connected to the top plate, the top of the second hydraulic telescopic cylinder is fixedly connected to the base, one side of the base is fixedly connected to the tripod, the output end of the second hydraulic telescopic cylinder is fixedly connected to the support plate, after the device is moved to the required position in the tunnel through the roller, the second hydraulic telescopic cylinder is opened to drive the support plate to continuously The lifting column is moved downward to a height at which the support plate fully contacts the ground and the rollers are clear of the ground, and then the first hydraulic telescopic cylinder is opened to drive the lifting column to rise to a position at which the top plate fully contacts the tunnel top for support; when transportation is required, the lifting column and the top plate are moved downward to a safe height by the first hydraulic telescopic cylinder, and then the second hydraulic telescopic cylinder is opened to drive the support plate to continue to move upward to a height at which the rollers contact the ground and the support plate is completely clear of the ground, and the device is moved using the rollers, which can effectively reduce the physical exertion caused to personnel by the cumbersome splicing process, thereby facilitating the movement of the layered surrounding rock tunnel support device in the tunnel and improving the efficiency of tunnel support construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of a layered surrounding rock tunnel support device of the utility model.

[0015] Figure 2 It is a structural front view of the layered surrounding rock tunnel support device of the utility model.

[0016] Figure 3 It is a structural side view of the layered surrounding rock tunnel support device of the utility model.

[0017] Figure 4 It is a structural top view of the layered surrounding rock tunnel support device of the utility model.

[0018] 1-tripod, 2-first hydraulic telescopic cylinder, 3-lifting column, 4-top plate, 5-foot pad, 6-screw, 7-bearing, 8-roller, 9-base, 10-second hydraulic telescopic cylinder, 11-support plate, 12-stabilizing plate, 13-plug, 14-rotating handle, 15-spring, 16-beam, 17-connecting block, 18-ground pad, 19-limiting nail. DETAILED DESCRIPTION

[0019] See also Figure 1 to Figure 4 ,in Figure 1 It is a schematic diagram of the structure of the layered rock tunnel support device. Figure 2 This is the structural front view of the layered rock tunnel support device. Figure 3 This is a side view of the structure of the layered rock tunnel support device. Figure 4 It is a top view of the structure of the layered rock tunnel support device.

[0020] The utility model provides a layered rock tunnel support device: comprising a tripod 1, a first hydraulic telescopic cylinder 2, a lifting column 3, a top plate 4, a foot pad 5, a screw 6, a bearing 7, a roller 8, a base 9, a second hydraulic telescopic cylinder 10 and a support plate 11, a plurality of the tripods 1 are symmetrically arranged, the inner side wall of each of the tripods 1 is provided with the first hydraulic telescopic cylinder 2, the lifting column 3 is fixedly connected to the output end of the first hydraulic telescopic cylinder 2, and is slidably arranged on the outer side wall of the tripod 1, the top plate 4 is fixedly connected to the top of the lifting column 3, the foot pad 5 is fixedly connected to the top of the lifting column 3, and the foot pad 5 is fixedly connected to the top of the lifting column 3. It is fixedly connected to the tripod 1 and is located on the outer side wall of the tripod 1. The foot pad 5 has threads. The screw rod 6 is threadedly connected to the foot pad 5 and passes through the foot pad 5. The bearing 7 is fixedly connected to the screw rod 6 and is located below the foot pad 5. The roller 8 is fixedly connected to the bottom of the bearing 7. The base 9 is fixedly connected to the tripod 1 and is located on the outer side wall of the tripod 1. The second hydraulic telescopic cylinder 10 is fixedly connected to the base 9. The support plate 11 is fixedly connected to the output end of the second hydraulic telescopic cylinder 10.

[0021] In the present embodiment, the first hydraulic telescopic cylinder 2 and the second hydraulic telescopic cylinder 10 are provided, the outer side of the first hydraulic telescopic cylinder 2 is fixedly connected to the tripod 1, the output end of the first hydraulic telescopic cylinder 2 is fixedly connected to the lifting column 3, the outer side of the lifting column 3 is slidably connected to the tripod 1, the top of the lifting column 3 is fixedly connected to the top plate 4, the top of the second hydraulic telescopic cylinder 10 is fixedly connected to the base 9, one side of the base 9 is fixedly connected to the tripod 1, and the output end of the second hydraulic telescopic cylinder 10 is fixedly connected to the support plate 11. After the device is moved to the desired position in the tunnel through the roller 8, the second hydraulic telescopic cylinder 10 is turned on to drive the support plate 11 to continuously move downward. , until the support plate 11 fully contacts the ground and the roller 8 is off the ground, and then the first hydraulic telescopic cylinder 2 is opened to drive the lifting column 3 to rise to the position where the top plate 4 fully contacts the tunnel top for support; when transportation is required, the lifting column 3 and the top plate 4 are moved down to a safe height by the first hydraulic telescopic cylinder 2, and then the second hydraulic telescopic cylinder 10 is opened to drive the support plate 11 to continue to move up to the height where the roller 8 contacts the ground and the support plate 11 is completely off the ground. The device is moved using the roller 8, which can effectively reduce the physical exertion caused by the cumbersome splicing process to the personnel, and obtain the effect of facilitating the movement of the layered surrounding rock tunnel support device in the tunnel and improving the efficiency of tunnel support construction.

[0022] Furthermore, the layered surrounding rock tunnel supporting device further comprises a beam frame 16 , which is fixedly connected to the top plate 4 and is located on the inner side wall of the top plate 4 .

[0023] In this embodiment, the beam frame 16 is provided, the outer side of the beam frame 16 is fixedly connected to the top plate 4, the bottom of the top plate 4 is fixedly connected to the lifting column 3, and the outer side of the lifting column 3 is slidably connected to the tripod 1, which can effectively improve the stability of the top plate 4 during long-term use.

[0024] Furthermore, the layered surrounding rock tunnel supporting device further comprises a connecting block 17 , and the connecting block 17 is arranged between two adjacent tripods 1 .

[0025] In this embodiment, the connection block 17 is provided, and both ends of the connection block 17 are connected to the tripod 1 to improve the stability between the multiple tripods 1.

[0026] Furthermore, the layered surrounding rock tunnel supporting device further comprises a stabilizing plate 12, which is fixedly connected to the foot frame 1 and is located at the bottom of the foot pad 5, and the stabilizing plate 12 is a triangular structure.

[0027] In this embodiment, the stabilizing plate 12 is a triangular structure, and one side of the stabilizing plate 12 is fixedly connected to the tripod 1 , which effectively ensures the stability of the foot pad 5 .

[0028] Furthermore, the layered surrounding rock tunnel supporting device also includes a plug 13 and a rotary handle 14 . The plug 13 is arranged on the top of the screw rod 6 . The rotary handle 14 is fixedly connected to the plug 13 and is located on the outer side wall of the plug 13 .

[0029] In this embodiment, the rotary handle 14 is provided, and the plug 13 is fixedly connected to one side of the rotary handle 14, and the screw 6 is fixedly connected to the bottom of the plug 13, which can effectively facilitate personnel to directly hold and rotate the screw 6 to adjust the height of the roller 8.

[0030] Furthermore, the layered surrounding rock tunnel supporting device also includes a spring 15, and the spring 15 is sleeved on the outer side wall of the screw rod 6, and the two ends of the spring 15 are respectively connected to the plug 13 and the foot pad 5.

[0031] In this embodiment, the top end of the screw rod 6 is movably connected to the spring 15, the top end of the screw rod 6 is fixedly connected to the plug 13, the outer side of the screw rod 6 is threadedly connected to the foot pad 5, and one side of the foot pad 5 is fixedly connected to the tripod 1, which effectively reduces the looseness of the screw rod 6 during long-term use.

[0032] Furthermore, the layered surrounding rock tunnel supporting device also includes a ground mat 18 and a limiting nail 19 . The ground mat 18 is fixedly connected to the support plate 11 and is located on the outer side wall of the support plate 11 . The limiting nail 19 passes through the ground mat 18 .

[0033] In this embodiment, the inner side of the floor mat 18 is movably connected with the limiting nails 19, and a plurality of the limiting nails 19 are symmetrically arranged, which effectively improves the stability of the device after being placed.

[0034] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A layered rock tunnel support device, characterized in that: The invention comprises a tripod, a first hydraulic telescopic cylinder, a lifting column, a top plate, a foot pad, a screw, a bearing, a roller, a base, a second hydraulic telescopic cylinder and a support plate. The multiple tripods are symmetrically arranged, and the inner side wall of each tripod is provided with the first hydraulic telescopic cylinder, the lifting column is fixedly connected to the output end of the first hydraulic telescopic cylinder and is slidably arranged on the outer side wall of the tripod, the top plate is fixedly connected to the top of the lifting column, the foot pad is fixedly connected to the tripod and is located on the outer side wall of the tripod, the foot pad has a thread, the screw is threadedly connected to the foot pad and passes through the foot pad, the bearing is fixedly connected to the screw and is located below the foot pad, the roller is fixedly connected to the bottom of the bearing, the base is fixedly connected to the tripod and is located on the outer side wall of the tripod, the second hydraulic telescopic cylinder is fixedly connected to the base, and the support plate is fixedly connected to the output end of the second hydraulic telescopic cylinder.

2. The layered rock tunnel support device according to claim 1, characterized in that: The layered surrounding rock tunnel supporting device also includes a beam frame, which is fixedly connected to the top plate and is located on the inner side wall of the top plate.

3. The layered rock tunnel support device according to claim 1, characterized in that: The layered surrounding rock tunnel supporting device also includes a connecting block, and the connecting block is arranged between two adjacent tripods.

4. The layered rock tunnel support device according to claim 1, characterized in that: The layered surrounding rock tunnel supporting device also includes a stabilizing plate, which is fixedly connected to the foot frame and located at the bottom of the foot pad, and the stabilizing plate is a triangular structure.

5. The layered rock tunnel support device according to claim 1, characterized in that: The layered surrounding rock tunnel supporting device also includes a plug and a rotary handle. The plug is arranged on the top of the screw rod. The rotary handle is fixedly connected to the plug and is located on the outer side wall of the plug.

6. The layered rock tunnel support device according to claim 5, characterized in that: The layered surrounding rock tunnel supporting device also includes a spring, which is sleeved on the outer side wall of the screw rod, and the two ends of the spring are respectively connected to the plug and the foot pad.

7. The layered rock tunnel support device according to claim 1, characterized in that: The layered surrounding rock tunnel supporting device also includes a ground mat and a limiting nail. The ground mat is fixedly connected to the support plate and is located on the outer side wall of the support plate. The limiting nail passes through the ground mat.

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