Tunnel contour blasting surface steel arch adjusting and supporting device

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a tunnel contour blasting surface steel arch adjusting and supporting device which comprises a bottom plate, a supporting plate is arranged over the bottom plate, a lifting assembly is arranged between the bottom plate and the supporting plate, and a folding supporting assembly is arranged at the top of the supporting plate. Universal wheels are fixedly connected to the four corners of the bottom of the bottom plate, the folding supporting assembly comprises a connecting frame arranged over the supporting plate, an arc-shaped supporting top plate is arranged at the top of the connecting frame, supporting rods are connected to the bottom of the arc-shaped supporting top plate at equal intervals, and the bottom ends of the supporting rods are fixedly connected with the top of the connecting frame; the two sides of the connecting frame are symmetrically connected with arc-shaped supporting side plates, the two sides of the top of the supporting plate are rotationally connected with lead screws, the top ends of the two lead screws are rotationally connected with the two sides of the bottom of the connecting frame correspondingly, the supporting device can be adjusted, and the device can be conveniently disassembled and moved.

Description

A steel arch frame adjustment and support device for tunnel profile blasting face Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to an adjustable support device for a steel arch frame on the blasting surface of a tunnel profile. Background Technology

[0002] Tunnels are engineering structures buried in the earth's strata, representing a form of human utilization of underground space. Tunnels can be categorized into traffic tunnels, hydraulic tunnels, municipal tunnels, and mining tunnels. The adjustable support device for the steel arch frame of the tunnel outline blasting face is a new type of support structure optimization technology in tunnel engineering. It is mainly used to solve the problem of controlling the deformation of the surrounding rock after blasting excavation under complex geological conditions. However, most existing support devices are integrated and non-adjustable, with a large volume, making disassembly and relocation very inconvenient and reducing the overall efficiency of tunnel construction. Summary of the Invention

[0003] The purpose of this utility model is to provide an adjustable support device for the steel arch frame of the tunnel profile blasting surface, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A steel arch frame adjustment support device for a tunnel profile blasting face includes a base plate, a support plate is provided directly above the base plate, a lifting assembly is provided between the base plate and the support plate, a folding support assembly is provided on the top of the support plate, and casters are fixedly connected to the four corners of the bottom of the base plate.

[0006] The folding support assembly includes a connecting frame positioned directly above a support plate. An arc-shaped support top plate is located on the top of the connecting frame. Support rods are equidistantly connected to the bottom of the arc-shaped support top plate, with the bottom ends of each support rod fixedly connected to the top of the connecting frame. Arc-shaped support side plates are symmetrically connected to both sides of the connecting frame. Lead screws are rotatably connected to both sides of the top of the support plate. The top ends of the two lead screws are rotatably connected to the bottom sides of the connecting frame. Driven bevel gears are fixedly connected to the top ends of the surfaces of the two lead screws. Moving blocks are threaded onto the surfaces of the two lead screws. Support shafts are rotatably connected to the opposite sides of the two moving blocks. A dual-axis motor is fixedly connected to the center of the bottom of the connecting frame. Connecting rods are connected to the output ends of the two dual-axis motors. Driving bevel gears are fixedly connected to the ends of the two connecting rods furthest from the dual-axis motors.

[0007] As a preferred embodiment of this utility model, the two movable blocks are arranged correspondingly, and the ends of the two supporting rotating shafts away from the movable blocks are respectively rotatably connected to the ends of the two arc-shaped supporting side plates away from the connecting frame.

[0008] As a preferred embodiment of this utility model, the two active bevel gears are respectively meshed with the two driven bevel gears, and the top ends of the two arc-shaped support side plates are respectively rotatably connected to the two sides of the connecting frame.

[0009] As a preferred embodiment of this utility model, the lifting assembly includes hydraulic rods disposed on both sides of the top of the base plate, the bottom ends of the two hydraulic rods being fixedly connected to both sides of the top of the base plate, and the top ends of the two hydraulic rods being fixedly connected to both sides of the bottom of the support plate.

[0010] As a preferred embodiment of this utility model, a scissor-type support frame is provided between the base plate and the support plate. An upper sliding groove is provided in the middle of the bottom of the support plate, and a lower sliding groove is provided in the middle of the top of the base plate. The upper sliding groove and the lower sliding groove are provided correspondingly, and a sliding rod is provided on the inner side of the upper sliding groove.

[0011] As a preferred embodiment of this utility model, the two ends of the slide rod are fixedly connected to the inner walls of the two sides of the upper slide groove, and a slider is slidably connected to one side of the surface of the slide rod. The internal structure of the lower slide groove is the same. The upper and lower ends of one side of the scissor-type support frame are rotatably connected to the inner walls of the upper slide groove and the lower slide groove, respectively. The upper and lower ends of the other side of the scissor-type support frame are rotatably connected to two sliders, respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this utility model, a dual-axis motor can drive the lead screws on both sides to move the moving blocks up and down by means of a connecting rod, a driving bevel gear and a driven bevel gear, so that the supporting rotating shaft can drive the arc-shaped supporting side plate to rotate, which is convenient for disassembly and storage. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the structure of this utility model;

[0015] Figure 2 is a schematic diagram of the folding support assembly of this utility model when folded;

[0016] Figure 3 is a structural schematic diagram of the lifting component of this utility model.

[0017] In the diagram: 1. Base plate; 2. Support plate; 3. Folding support assembly; 301. Connecting frame; 302. Arc-shaped support top plate; 303. Support rod; 304. Arc-shaped support side plate; 305. Lead screw; 306. Driven bevel gear; 307. Moving block; 308. Support shaft; 309. Dual-axis motor; 310. Connecting rod; 311. Driven bevel gear; 4. Lifting assembly; 5. Casters; 401. Hydraulic rod; 402. Upper slide groove; 403. Lower slide groove; 404. Scissor-type support frame; 405. Slide bar; 406. Slider. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] As illustrated in Figures 1 and 2, this utility model provides a technical solution:

[0023] A steel arch frame adjustment support device for a tunnel profile blasting face includes a base plate 1, a support plate 2 directly above the base plate 1, a lifting assembly 4 between the base plate 1 and the support plate 2, a folding support assembly 3 on the top of the support plate 2, and casters 5 fixedly connected to the four corners of the bottom of the base plate 1. The folding support assembly 3 includes a connecting frame 301 directly above the support plate 2, an arc-shaped support top plate 302 on the top of the connecting frame 301, support rods 303 equidistantly connected to the bottom of the arc-shaped support top plate 302, the bottom ends of the support rods 303 being fixedly connected to the top of the connecting frame 301, and arc-shaped support side members symmetrically connected to both sides of the connecting frame 301. Plate 304 and support plate 2 are rotatably connected to both sides of the top of the two lead screws 305. The top ends of the two lead screws 305 are rotatably connected to the bottom sides of the connecting frame 301 respectively. The top ends of the surfaces of the two lead screws 305 are fixedly connected to the driven bevel gears 306. The surfaces of the two lead screws 305 are threadedly connected to the moving blocks 307. The opposite sides of the two moving blocks 307 are rotatably connected to the supporting shafts 308. The middle of the bottom of the connecting frame 301 is fixedly connected to the dual-axis motors 309. The output ends of the two dual-axis motors 309 are connected to the connecting rods 310. The ends of the two connecting rods 310 away from the dual-axis motors 309 are fixedly connected to the driving bevel gears 311.

[0024] As shown in Figures 1 and 2, the two moving blocks 307 are arranged correspondingly, and the ends of the two supporting rotating shafts 308 away from the moving blocks 307 are respectively rotatably connected to the ends of the two arc-shaped supporting side plates 304 away from the connecting frame 301. The two driving bevel gears 311 are respectively meshed with the two driven bevel gears 306, and the tops of the two arc-shaped supporting side plates 304 are respectively rotatably connected to the two sides of the connecting frame 301.

[0025] As shown in Figure 3, the lifting assembly 4 includes hydraulic rods 401 arranged on both sides of the top of the base plate 1. The bottom ends of the two hydraulic rods 401 are fixedly connected to the two sides of the top of the base plate 1, and the top ends of the two hydraulic rods 401 are fixedly connected to the two sides of the bottom of the support plate 2. A scissor-type support frame 404 is arranged between the base plate 1 and the support plate 2. An upper sliding groove 402 is opened in the middle of the bottom of the support plate 2, and a lower sliding groove 403 is opened in the middle of the top of the base plate 1. The upper sliding groove 402 and the lower sliding groove 403 are arranged correspondingly. A sliding rod 405 is arranged on the inner side of the upper sliding groove 402. The two ends of the sliding rod 405 are fixedly connected to the inner walls of the two sides of the upper sliding groove 402, and a slider 406 is slidably connected to one side of the surface of the sliding rod 405. The internal structure of the lower sliding groove 403 is the same. The upper and lower ends of one side of the scissor-type support frame 404 are rotatably connected to the inner walls of the upper sliding groove 402 and the lower sliding groove 403, respectively. The upper and lower ends of the other side of the scissor-type support frame 404 are rotatably connected to the two sliders 406, respectively.

[0026] The working process of this utility model is as follows: During use, the entire device is moved via the casters 5. The hydraulic rod 401 pushes the support plate 2 and the folding support assembly 3 upwards, stretching the scissor-type support frame 404. The sliders 406 on both sides slide on the surface of the sliding rod 405. Subsequently, the dual-axis motor 309 drives two active bevel gears 311 to rotate via the connecting rods 310 on both sides. The two active bevel gears 311, through the driven bevel gears 306, drive two lead screws 305 to rotate. During the rotation of the lead screws 305... The movable block 307 moves downward, and the two arc-shaped support side plates 304 are flipped by the support shafts 308 on both sides, so that the arc-shaped support top plate 302 and the arc-shaped support side plates 304 support the blasting surface of the tunnel. Similarly, when disassembling the device, the dual-axis motor 309 drives the active bevel gears 311 on both sides to reverse, the two movable blocks 307 move upward, the two support shafts 308 drive the two arc-shaped support side plates 304 to fold inward, and the hydraulic rod 401 drives the folding support assembly 3 to move downward, so as to complete the disassembly work.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel arch frame adjustment and support device for a tunnel profile blasting face, comprising a base plate (1), characterized in that: A support plate (2) is provided directly above the base plate (1), and a lifting assembly (4) is provided between the base plate (1) and the support plate (2). A folding support assembly (3) is provided on the top of the support plate (2), and casters (5) are fixedly connected to the four corners of the bottom of the base plate (1). The folding support assembly (3) includes a connecting frame (301) provided directly above the support plate (2). An arc-shaped support top plate (302) is provided on the top of the connecting frame (301), and support rods (303) are equidistantly connected to the bottom of the arc-shaped support top plate (302). The bottom ends of the support rods (303) are fixedly connected to the top of the connecting frame (301). Arc-shaped support side plates (304) are symmetrically connected to both sides of the connecting frame (301). Both sides of the top of the support plate (2) are rotatably connected to lead screws (305). The top ends of the two lead screws (305) are rotatably connected to the bottom sides of the connecting frame (301). The top ends of the surfaces of the two lead screws (305) are fixedly connected to driven bevel gears (306). The surfaces of the two lead screws (305) are threadedly connected to moving blocks (307). The opposite sides of the two moving blocks (307) are rotatably connected to supporting shafts (308). The middle of the bottom of the connecting frame (301) is fixedly connected to a dual-axis motor (309). The output ends of the two dual-axis motors (309) are connected to connecting rods (310). The ends of the two connecting rods (310) away from the dual-axis motors (309) are fixedly connected to driving bevel gears (311).

2. The tunnel profile blasting face steel arch frame adjustment and support device according to claim 1, characterized in that: The two movable blocks (307) are arranged correspondingly, and the ends of the two support shafts (308) away from the movable blocks (307) are respectively rotatably connected to the ends of the two arc-shaped support side plates (304) away from the connecting frame (301).

3. The tunnel profile blasting face steel arch frame adjustment and support device according to claim 1, characterized in that: The two active bevel gears (311) are respectively meshed with the two driven bevel gears (306), and the top ends of the two arc-shaped support side plates (304) are respectively rotatably connected to the two sides of the connecting frame (301).

4. The tunnel profile blasting face steel arch frame adjustment and support device according to claim 1, characterized in that: The lifting assembly (4) includes hydraulic rods (401) disposed on both sides of the top of the base plate (1). The bottom ends of the two hydraulic rods (401) are fixedly connected to the two sides of the top of the base plate (1), and the top ends of the two hydraulic rods (401) are fixedly connected to the two sides of the bottom of the support plate (2).

5. The tunnel profile blasting face steel arch frame adjustment and support device according to claim 4, characterized in that: A scissor-type support frame (404) is provided between the base plate (1) and the support plate (2). An upper sliding groove (402) is provided in the middle of the bottom of the support plate (2), and a lower sliding groove (403) is provided in the middle of the top of the base plate (1). The upper sliding groove (402) and the lower sliding groove (403) are provided correspondingly, and a sliding rod (405) is provided on the inner side of the upper sliding groove (402).

6. The tunnel profile blasting face steel arch frame adjustment and support device according to claim 5, characterized in that: The two ends of the slide rod (405) are fixedly connected to the inner walls of the upper slide groove (402) on both sides respectively. A slider (406) is slidably connected to one side of the surface of the slide rod (405). The internal structure of the lower slide groove (403) is the same. The upper and lower ends of one side of the scissor support frame (404) are rotatably connected to the inner walls of the upper slide groove (402) and the lower slide groove (403) respectively. The upper and lower ends of the other side of the scissor support frame (404) are rotatably connected to two sliders (406) respectively.

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