Movable construction trestle for tunnel

Abstract

The utility model discloses a movable construction trestle for a tunnel, which belongs to the technical field of construction trestles and comprises two trestle main bodies, each trestle main body comprises a steel frame, rectangular holes are formed in the tops of the two steel frames, steel bar frames are fixedly arranged in the rectangular holes, a plurality of main moving wheels are fixedly arranged at the bottom ends of the two trestle main bodies, and the main moving wheels are arranged on the two trestle main bodies. The two trestle main bodies are connected through a connecting assembly, the connecting assembly comprises a plurality of main cross beams, storage grooves are formed in one ends of the main cross beams, and auxiliary cross beams are arranged in the storage grooves in a sliding mode. The trestle main bodies are supported by the main moving wheels and the auxiliary moving wheels to move autonomously, the positions of the trestle main bodies can be adjusted conveniently, the tunnel construction operation progress is effectively improved, the lengths of the auxiliary cross beams extending out of the main cross beams can be adjusted by means of the driving assemblies, and therefore the distance between the two trestle main bodies can be adjusted; and therefore, the device is suitable for construction equipment with different widths and high in flexibility.

Description

Technical Field

[0001] The utility model relates to the technical field of construction trestle bridges, and belongs to a movable construction trestle bridge for a tunnel. Background Art

[0002] During tunnel excavation, lining construction and excavation are carried out simultaneously, based on tunnel safety step spacing requirements. In areas with inverted arches, where excavation slag transportation interferes with inverted arch construction, a trestle structure is typically used as a transitional passage to ensure the passage of machinery and equipment within the tunnel.

[0003] For example, the prior art publication number CN213574119U is a self-propelled tunnel inverted arch steel arch construction trestle. This utility model combines a lifting system with a trestle to achieve mechanical installation of the tunnel steel arch frame. It can also be used for the installation and transportation of materials such as steel bars, effectively reducing manual labor intensity, improving construction efficiency, and ensuring construction quality.

[0004] Traditional trestles are formed by welding steel arch frames and steel bars. There is no autonomous walking device and movement must rely on large loaders. Repeated movement will cause mechanical equipment and personnel to be occupied for a long time, affecting production efficiency. Too many movements will also cause the steel structure to loosen, causing construction hazards. Based on this, the utility model provides a movable tunnel construction trestle. Utility Model Content

[0005] To this end, the utility model provides a movable tunnel construction trestle to solve the problem in the prior art of low construction progress caused by the lack of an autonomous walking device.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A movable tunnel construction trestle comprises two trestle bodies, both of which comprise steel frames, both of which have rectangular holes opened on the tops of the two steel frames, steel bars fixedly provided inside the rectangular holes, a plurality of main movable wheels fixedly provided at the bottom ends of the two trestle bodies, the two trestle bodies being connected by a connecting assembly, the connecting assembly comprising a plurality of main beams, each of which has a receiving groove opened at one end, a secondary beam slidingly provided in the receiving groove, the ends of the plurality of main beams away from the secondary beams being fixed to the outer wall of one of the trestle bodies, the ends of the plurality of secondary beams away from the main beams being fixed to the outer wall of the other trestle body, and a driving assembly for driving the secondary beam to move is provided inside each main beam.

[0008] Furthermore, a slide groove is provided at the bottom of each storage groove, and the driving assembly includes a threaded rod, one end of the threaded rod is rotatably connected to the inner wall of the slide groove, and a nut block is threadedly connected to the threaded rod, and the top of the nut block is fixed to the bottom of the secondary crossbeam. When the threaded rod rotates, the nut block is limited by the slide groove and moves in the slide groove, thereby driving the secondary crossbeam to extend from the storage groove, thereby realizing automatic adjustment of the distance between the two trestle bodies.

[0009] Furthermore, a motor for driving the threaded rod to rotate is fixedly provided at one end of each threaded rod, and the motor is fixed in the slide groove. With the motor as the power source, no manual adjustment is required, which is very time-saving and labor-saving to use.

[0010] Furthermore, a secondary moving wheel is fixedly provided at the bottom end of each main beam and each secondary beam, and a brake is fixedly provided on each main moving wheel and each secondary moving wheel. The brake can be used to brake the main moving wheel and the secondary moving wheel, thereby improving the stability of the trestle body.

[0011] Furthermore, two front-to-back symmetrical rectangular grooves are provided on the side away from each other on the top of the two trestle bodies. Grating transmitters and grating receivers are movably provided in the two front-to-back symmetrical rectangular grooves respectively. Alarms are fixedly embedded on the top of the two trestle bodies. With the help of the grating transmitter, grating receiver and alarm, construction workers standing on the trestle bodies are warned, thereby improving safety.

[0012] Furthermore, a plurality of embedding grooves are provided on the top of each main beam and each secondary beam, and telescopic rods are movably provided in the embedding grooves. The telescopic rods are used as handrails on the main beam and the secondary beam to improve the walking safety of construction workers.

[0013] Furthermore, positioning blocks are fixed at the front ends of the two trestle bodies, and positioning grooves that are compatible with the positioning blocks are opened at the rear ends of the two trestle bodies. The positioning blocks are plugged into the positioning grooves, which makes it convenient for construction workers to quickly splice the two trestle bodies for use.

[0014] Furthermore, electromagnetic locks are fixedly embedded on the inner walls on both sides of the positioning groove, and slots compatible with the electromagnetic locks are opened on the outer walls on both sides of the positioning block. By locking the positioning block with the help of the electromagnetic lock, the two trestle bodies can be firmly fixed together, and splicing them together is very convenient.

[0015] The utility model has the following advantages:

[0016] 1. The utility model supports the autonomous movement of the trestle body through multiple main moving wheels and multiple auxiliary moving wheels, which is convenient for adjusting the position of the trestle body and effectively improving the progress of tunnel construction work. In addition, the length of the auxiliary crossbeam extending from the main crossbeam can be adjusted with the help of the drive assembly, so as to adjust the distance between the two trestle bodies, and thus can be applied to construction equipment of different widths, with high flexibility.

[0017] 2. By setting up multiple telescopic rods on the main beam and the auxiliary beam to assist the construction workers in walking, the safety of the construction workers when walking is improved. In addition, the grating transmitter, grating receiver and alarm are used in combination to prevent the construction workers from falling from the edge of the trestle body, thereby improving the safety of the construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0020] Figure 1 A schematic diagram of the overall structure provided by the utility model;

[0021] Figure 2 The main view of the overall structure provided by the utility model;

[0022] Figure 3 A top view of the overall structure provided by the utility model;

[0023] Figure 4 This is a rear view of the overall structure provided by the utility model;

[0024] Figure 5 This is a cross-sectional view of the main beam provided by the utility model.

[0025] In the figure: 1. Bridge body; 2. Main moving wheel; 3. Connecting assembly; 4. Driving assembly; 5. Slide; 6. Secondary moving wheel; 7. Brake; 8. Rectangular slot; 9. Grating transmitter; 10. Grating receiver; 11. Alarm; 12. Embossed slot; 13. Telescopic rod; 14. Positioning block; 15. Positioning slot; 16. Electromagnetic lock; 17. Card slot

[0026] 101. Steel frame; 102. Rectangular hole; 103. Steel bar frame;

[0027] 301, main beam; 302, storage slot; 303, auxiliary beam;

[0028] 401, threaded rod; 402, nut block; 403, motor. DETAILED DESCRIPTION

[0029] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can readily understand the other advantages and benefits of the present invention from the contents disclosed in this specification. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0030] Refer to the instruction manual Figure 1-5 The utility model provides a movable tunnel construction trestle 1, including two trestle main bodies 1, the two trestle main bodies 1 include steel frames 101, the tops of the two steel frames 101 are each provided with a rectangular hole 102, a steel bar frame 103 is fixedly provided inside the rectangular hole 102, the bottom ends of the two trestle main bodies 1 are each fixedly provided with a plurality of main moving wheels 2, the two trestle main bodies 1 are connected by a connecting assembly 3, the connecting assembly 3 includes a plurality of main beams 301, one end of the plurality of main beams 301 are each provided with a receiving groove 302, a secondary beam 303 is slidably provided in the receiving groove 302, the ends of the plurality of main beams 301 away from the secondary beams 303 are each fixed to the outer wall of one of the trestle main bodies 1, and the ends of the plurality of secondary beams 303 away from the main beams 301 are each fixed to the outer wall of the other trestle main body 1;

[0031] In order to realize the automatic adjustment of the secondary crossbeam 303, a driving assembly 4 is provided inside each main crossbeam 301 to drive the secondary crossbeam 303 to move. Specifically, a slide groove 5 is provided at the bottom of each storage groove 302. The driving assembly 4 includes a threaded rod 401. One end of the threaded rod 401 is rotatably connected to the inner wall of the slide groove 5. A nut block 402 is threadedly connected to the threaded rod 401. The top of the nut block 402 is fixed to the bottom of the secondary crossbeam 303. When the threaded rod 401 rotates, the nut block 402 is limited by the slide groove 5 and moves in the slide groove 5, thereby driving the secondary crossbeam 303 to extend from the storage groove 302, thereby realizing the automatic adjustment of the distance between the two trestle bodies 1.

[0032] In order to make the threaded rod 401 rotate automatically, a motor 403 for driving the threaded rod 401 to rotate is fixed at one end of each threaded rod 401. The motor 403 is fixed in the slide 5. With the motor 403 as the power source, no manual adjustment is required, which is very time-saving and labor-saving to use.

[0033] In order to improve the bearing capacity of the trestle body 1, an auxiliary moving wheel 6 is fixedly provided at the bottom end of each main crossbeam 301 and the bottom end of each auxiliary crossbeam 303, and a brake 7 is fixedly provided on each main moving wheel 2 and each auxiliary moving wheel 6. The brake 7 can be used to brake the main moving wheel 2 and the auxiliary moving wheel 6, thereby improving the stability of the trestle body 1;

[0034] In order to quickly splice the trestle bodies 1, positioning blocks 14 are fixedly provided at the front ends of the two trestle bodies 1, and positioning grooves 15 that are compatible with the positioning blocks 14 are provided at the rear ends of the two trestle bodies 1. The positioning blocks 14 are plugged into the positioning grooves 15, which makes it convenient for construction workers to quickly splice the two trestle bodies 1 for use. Moreover, electromagnetic locks 16 are fixedly embedded on the inner walls on both sides of the positioning grooves 15, and card slots 17 that are compatible with the electromagnetic locks 16 are provided on the outer walls on both sides of the positioning blocks 14. By locking the positioning blocks 14 with the help of the electromagnetic locks 16, the two trestle bodies 1 can be firmly fixed together, and splicing them together is very convenient.

[0035] When the position of the trestle body 1 needs to be adjusted, it is only necessary to open the brake 7, and then use the main moving wheels 2 and the auxiliary moving wheels 6 to drive the trestle body 1 to move, so that the position of the trestle body 1 can be adjusted conveniently.

[0036] Refer to the instruction manual Figure 1-5 Two symmetrical rectangular grooves 8 are provided on the side away from each other on the top of the two trestle bodies 1. The two symmetrical rectangular grooves 8 are respectively provided with grating transmitters 9 and grating receivers 10. The tops of the two trestle bodies 1 are fixedly embedded with alarms 11. With the help of the grating transmitters 9, grating receivers 10 and alarms 11, construction workers standing on the trestle bodies 1 are warned, thereby improving safety.

[0037] A plurality of embedded grooves 12 are provided on the top of each main beam 301 and each secondary beam 303. Telescopic rods 13 are movably provided in the embedded grooves 12. The telescopic rods 13 serve as handrails on the main beam 301 and the secondary beam 303, thereby improving the walking safety of construction workers.

[0038] By arranging telescopic rods 13 on both the main crossbeam 301 and the secondary crossbeam 303, when construction workers need to walk between the two trestle bodies 1, they first flip the telescopic rods 13 to a vertical state. When walking on the main crossbeam 301 and the secondary crossbeam 303, multiple telescopic rods 13 can serve as handrails, thereby improving the safety of construction workers when walking. In addition, grating transmitters 9 and grating receivers 10 are arranged at the edges of the two trestle bodies 1. There are multiple infrared rays between the grating transmitters 9 and the grating receivers 10. Once the construction workers touch the infrared rays, the alarm 11 immediately sounds an alarm to serve as a warning, which can improve the safety of the construction workers.

[0039] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, such modifications or improvements, without departing from the spirit of the present invention, are within the scope of protection claimed herein.

Claims

1. A movable tunnel construction trestle, comprising two trestle bodies (1), characterized in that: The two trestle bridge bodies (1) each include a steel frame (101), a rectangular hole (102) is provided on the top of each steel frame (101), a steel bar frame (103) is fixedly provided inside the rectangular hole (102), and a plurality of main moving wheels (2) are fixedly provided at the bottom of each trestle bridge body (1); The two trestle bridge bodies (1) are connected via a connecting assembly (3), wherein the connecting assembly (3) comprises a plurality of main crossbeams (301), each of the plurality of main crossbeams (301) having a receiving groove (302) at one end, a secondary crossbeam (303) being slidably arranged in the receiving groove (302), the plurality of main crossbeams (301) having one end away from the secondary crossbeam (303) being fixed to the outer wall of one of the trestle bridge bodies (1), and the plurality of secondary crossbeams (303) having one end away from the main crossbeam (301) being fixed to the outer wall of the other trestle bridge body (1); Each main crossbeam (301) is provided with a driving assembly (4) inside for driving the secondary crossbeam (303) to move.

2. The movable tunnel construction trestle according to claim 1, characterized in that: A slide groove (5) is provided at the bottom of each receiving groove (302), and the driving assembly (4) includes a threaded rod (401), one end of the threaded rod (401) is rotatably connected to the inner wall of the slide groove (5), and a nut block (402) is threadedly connected to the threaded rod (401), and the top of the nut block (402) is fixed to the bottom of the secondary crossbeam (303).

3. The movable tunnel construction trestle according to claim 2, characterized in that: A motor (403) for driving the threaded rod (401) to rotate is fixedly provided at one end of each threaded rod (401), and the motor (403) is fixed in the slide groove (5).

4. The movable tunnel construction trestle according to claim 1, characterized in that: A secondary moving wheel (6) is fixedly provided at the bottom end of each main crossbeam (301) and the bottom end of each secondary crossbeam (303), and a brake (7) is fixedly provided on each main moving wheel (2) and each secondary moving wheel (6).

5. The movable tunnel construction trestle according to claim 1, characterized in that: Two front-to-back symmetrical rectangular grooves (8) are provided on the sides of the tops of the two trestle main bodies (1) that are spaced apart from each other. A grating transmitter (9) and a grating receiver (10) are movably provided in the two front-to-back symmetrical rectangular grooves (8). An alarm (11) is fixedly embedded in the tops of the two trestle main bodies (1).

6. The movable tunnel construction trestle according to claim 1, characterized in that: A plurality of embedding grooves (12) are provided on the top of each main crossbeam (301) and the top of each auxiliary crossbeam (303), and telescopic rods (13) are movably provided in the embedding grooves (12).

7. The movable tunnel construction trestle according to claim 1, characterized in that: The front ends of the two trestle main bodies (1) are both fixedly provided with positioning blocks (14), and the rear ends of the two trestle main bodies (1) are both provided with positioning grooves (15) adapted to the positioning blocks (14).

8. The movable tunnel construction trestle according to claim 7, characterized in that: Electromagnetic locks (16) are fixedly embedded in the inner walls on both sides of the positioning groove (15), and clamping grooves (17) adapted to the electromagnetic locks (16) are opened on the outer walls on both sides of the positioning block (14).

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