Hydraulic trestle for tunnel construction

Abstract

The utility model discloses a hydraulic trestle for tunnel construction, and particularly relates to the technical field of hydraulic trestles, the hydraulic trestle comprises a main bridge body and two approach bridges, the two approach bridges are respectively positioned on two sides of the main bridge body, buffer components are arranged on the approach bridges, each buffer component comprises an antiskid plate, a damper, a buffer gasket, a fixed plate, a screw rod and an extrusion sleeve, the number of the dampers is multiple, the two ends of each damper are fixedly connected with the anti-skid plate and the fixing plate correspondingly, and the bottom end of the buffer gasket is fixedly connected with the fixing plate. Tyres of a vehicle can be prevented from slipping through the antiskid plate, the weight of the vehicle can drive the antiskid plate to move downwards so as to drive the multiple dampers to be compressed, the approach bridge can be buffered through the multiple dampers and the buffer gasket, the extrusion sleeve is rotated to be far away from the lead screw, and therefore fixation between the lead screw and the approach bridge is relieved. And the anti-skid plate and the fixing plate are disassembled and replaced, the structure is simple, the buffering effect is good, and the using effect is good.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic trestle technology, and more specifically, to a hydraulic trestle for tunnel construction. Background Technology

[0002] Tunnel construction refers to the process of building tunnels in mountains, underwater, or underground in cities, aiming to provide passage for railways, highways, and other infrastructure. Hydraulic trestle bridges are engineering facilities that control lifting, extension, and rotation through a hydraulic system. In the early stages of tunnel excavation, hydraulic trestle bridges provide passage for vehicles (dump trucks or excavators), ensuring the normal entry and exit of construction vehicles.

[0003] A search revealed that Chinese Patent CN220013344U discloses a trestle bridge for tunnel maintenance and construction without interrupting traffic. This trestle bridge is movable to adapt to the flexible changes in maintenance and construction locations within the tunnel, improving its flexibility in adapting to different maintenance sections. Furthermore, the foldable trestle bridge allows for rapid erection, occupies little space, and is convenient to transport, while simultaneously reducing the construction cost of temporary trestle bridges and minimizing the impact of maintenance and construction on tunnel traffic disruption.

[0004] When the aforementioned trestle is in use, the lifting device includes a motor, a plunger oil pump, a multi-way valve, a front approach bridge lifting cylinder, a rear approach bridge lifting cylinder, pipelines, and auxiliary components. It can be used to adjust the lifting height of the front and rear approach bridges. However, the front and rear approach bridges lack a buffer structure, which causes the approach bridges to deform when bearing vehicle loads. Over time, this will affect the structural stability of the bridge and result in poor performance. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a hydraulic trestle for tunnel construction, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic trestle for tunnel construction, comprising a main bridge body and two approach bridges, with the two approach bridges located on opposite sides of the main bridge body. A buffer assembly is provided on each approach bridge, comprising an anti-slip plate, a damper, a buffer pad, a fixing plate, a lead screw, and a compression sleeve. Several dampers are provided, with both ends of each damper fixedly connected to the anti-slip plate and the fixing plate, respectively. The bottom end of the buffer pad is fixedly connected to the fixing plate, and the bottom end of the fixing plate contacts the approach bridge. The top end of the lead screw penetrates the approach bridge and is fixedly connected to the fixing plate. The compression sleeve is threadedly connected to the lead screw, and there are two lead screws and two compression sleeves. Two fixing frames are fixedly connected to the bottom end of the main bridge body, and two second hydraulic cylinders are fixedly connected inside each of the two fixing frames.

[0007] Furthermore, each of the four second hydraulic cylinders is fixedly connected to a support plate at its bottom end. The four support plates can increase the contact area between the four second hydraulic cylinders and the ground.

[0008] Furthermore, two guardrails are fixedly connected to the top of the main bridge body, which can serve to protect vehicles.

[0009] Furthermore, four casters are fixedly connected to the bottom of the main bridge body, which can facilitate the horizontal movement of the main bridge body.

[0010] Furthermore, a first hydraulic cylinder is fixedly connected inside each of the two fixed frames, and a connecting frame is fixedly connected to one side of each of the two first hydraulic cylinders.

[0011] Furthermore, the connecting frame is internally provided with a rotating assembly, which includes a self-locking motor, a gear set, a rotating shaft, and a connecting plate, and there are two rotating assemblies.

[0012] Furthermore, the self-locking motor is fixedly installed on the front side of the connecting frame, and the output shaft of the self-locking motor is connected to the rotating shaft through a gear set. Both the front and rear ends of the rotating shaft are fixedly connected to the connecting frame. The connecting plate is fixedly sleeved on the rotating shaft, and one side of the connecting plate is fixedly connected to the guide bridge.

[0013] It can be seen that the above technical solution is designed to facilitate the adjustment of the inclination angle of the approach bridge.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. This utility model can prevent vehicle tires from slipping through the anti-slip plate, and the weight of the vehicle itself can drive the anti-slip plate to move downward, thereby driving multiple dampers to compress. Through multiple dampers and buffer pads, the approach bridge can be buffered. Rotating the compression sleeve and moving it away from the lead screw can release the fixation between the lead screw and the approach bridge, allowing the anti-slip plate and the fixing plate to be disassembled and replaced. The structure is simple, the buffering effect is good, and the use effect is good.

[0016] 2. In this utility model, when all four support pressure plates are located on top of the four universal wheels, the main bridge body can be pushed to move horizontally. The piston rod on the first hydraulic cylinder extends and drives the connecting frame to move horizontally, thereby driving the approach bridge to move horizontally. The self-locking motor is started, and the self-locking motor drives the rotating shaft to rotate through the gear set, thereby driving the connecting plate and the approach bridge to rotate. The tilt angle of the approach bridge can be adjusted according to the requirements. The structure is simple and easy to use. Attached Figure Description

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a bottom view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the assembly structure of the approach bridge and connecting frame of this utility model;

[0021] Figure 4 This is a cross-sectional view of the fixed frame and a schematic diagram of the assembly structure of the first hydraulic cylinder of this utility model;

[0022] Figure 5 This is a schematic diagram of the buffer component structure of this utility model;

[0023] Figure 6 This is a side view of the overall structure of this utility model.

[0024] In the diagram: 1. Main bridge body; 2. Guardrail; 3. Approach bridge; 4. Buffer assembly; 5. Fixing frame; 6. Casters; 7. Support plate; 8. Connecting frame; 9. Self-locking motor; 10. Gear set; 11. Shaft; 12. Connecting plate; 13. First hydraulic cylinder; 14. Second hydraulic cylinder; 401. Anti-slip plate; 402. Damper; 403. Buffer pad; 404. Fixing plate; 405. Lead screw; 406. Extrusion sleeve. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Refer to the instruction manual appendix Figure 1-6This embodiment of a hydraulic trestle for tunnel construction includes a main bridge body 1 and two approach bridges 3, with the two approach bridges 3 located on both sides of the main bridge body 1. A buffer assembly 4 is provided on the approach bridge 3. The buffer assembly 4 includes an anti-slip plate 401, a damper 402, a buffer pad 403, a fixing plate 404, a lead screw 405, and a compression sleeve 406. There are several dampers 402, and the two ends of the several dampers 402 are fixedly connected to the anti-slip plate 401 and the fixing plate 404, respectively. The bottom end of the buffer pad 403 is fixedly connected to the fixing plate 404, and the bottom end of the fixing plate 404 contacts the approach bridge 3. The top end of the lead screw 405 passes through the approach bridge 3 and is fixedly connected to the fixing plate 404. The compression sleeve 406 is threadedly connected to the lead screw 405, and there are two lead screws 405 and two compression sleeves 406. Two fixing frames 5 are fixedly connected to the bottom end of the main bridge body 1, and two second hydraulic cylinders 14 are fixedly connected inside each of the two fixing frames 5.

[0027] It is worth noting that the main bridge body 1 can also be in three sections, each 12 meters long. Adjacent main bridge bodies 1 are connected by a special mortise and tenon structure. Each 12-meter bridge body can be prefabricated at different construction sites at the same time, and then transported to the site for assembly. This parallel construction method greatly shortens the overall construction cycle.

[0028] Furthermore, each of the four second hydraulic cylinders 14 is fixedly connected to a support plate 7 at its bottom end. The four support plates 7 can increase the contact area between the four second hydraulic cylinders 14 and the ground.

[0029] Furthermore, two guardrails 2 are fixedly connected to the top of the main bridge body 1, which can serve to protect vehicles.

[0030] Furthermore, four casters 6 are fixedly connected to the bottom of the main bridge body 1. The four casters 6 can facilitate the horizontal movement of the main bridge body 1.

[0031] Furthermore, a first hydraulic cylinder 13 is fixedly connected inside each of the two fixed frames 5, and a connecting frame 8 is fixedly connected to one side of each of the two first hydraulic cylinders 13. A rotating assembly is provided inside the connecting frame 8. The rotating assembly includes a self-locking motor 9, a gear set 10, a rotating shaft 11, and a connecting plate 12. There are two rotating assemblies. The self-locking motor 9 is fixedly installed on the front side of the connecting frame 8, and the output shaft of the self-locking motor 9 is connected to the rotating shaft 11 through the gear set 10. Both the front and rear ends of the rotating shaft 11 are fixedly connected to the connecting frame 8. The connecting plate 12 is fixedly sleeved on the rotating shaft 11, and one side of the connecting plate 12 is fixedly connected to the guide bridge 3.

[0032] The process involves activating the second hydraulic cylinder 14, which extends its piston rod to move the support plate 7 downwards and bring it into contact with the ground. Similarly, the positions of the other three support plates 7 are adjusted to move the four casters 6 away from the ground. When all four support plates 7 are on top of the four casters 6, the main bridge body 1 can be moved horizontally. Activating the first hydraulic cylinder 13, which extends its piston rod to move the connecting frame 8 horizontally, thereby moving the approach bridge 3 horizontally. Activating the self-locking motor 9, which drives the rotating shaft 11 to rotate via the gear set 10, thereby rotating the connecting plate 12 and the approach bridge 3. The tilt angle of the approach bridge 3 can be adjusted as needed. The structure is simple and easy to use.

[0033] The usage method of this embodiment is as follows:

[0034] In use, the vehicle enters the top of the main bridge 1 through one of the approach bridges 3. The vehicle's tires come into contact with the anti-slip plate 401. The anti-slip plate 401 can prevent the vehicle's tires from slipping, and the vehicle's own weight can drive the anti-slip plate 401 to move downwards, thereby driving multiple dampers 402 to compress. The approach bridge 3 can be buffered by the multiple dampers 402 and the buffer pads 403. Rotate the compression sleeve 406 and move it away from the lead screw 405, thereby releasing the fixation between the lead screw 405 and the approach bridge 3. The anti-slip plate 401 and the fixing plate 404 can be disassembled and replaced. Similarly, the anti-slip plate 401 and the fixing plate 404 can be installed and fixed. The structure is simple, the buffering effect is good, and the use effect is good.

[0035] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic trestle for tunnel construction, comprising a main bridge body (1) and two approach bridges (3), and the two approach bridges (3) are respectively located on both sides of the main bridge body (1), characterized in that: The approach bridge (3) is provided with a buffer assembly (4), which includes an anti-slip plate (401), a damper (402), a buffer pad (403), a fixing plate (404), a lead screw (405), and a compression sleeve (406). There are several dampers (402), and the two ends of the several dampers (402) are fixedly connected to the anti-slip plate (401) and the fixing plate (404) respectively. The bottom end of the buffer pad (403) is connected to the fixing plate (404). The fixed connection is as follows: the bottom end of the fixed plate (404) is in contact with the approach bridge (3); the top end of the screw (405) passes through the approach bridge (3) and is fixedly connected to the fixed plate (404); the extrusion sleeve (406) is threadedly connected to the screw (405); and there are two screws (405) and extrusion sleeves (406); the bottom end of the main bridge body (1) is fixedly connected to two fixed frames (5); and two second hydraulic cylinders (14) are fixedly connected inside the two fixed frames (5).

2. The hydraulic staging for tunnel construction according to claim 1, characterized in that: The bottom ends of the four second hydraulic cylinders (14) are all fixedly connected with support plates (7), which can increase the contact area between the four second hydraulic cylinders (14) and the ground.

3. The hydraulic staging for tunnel construction of claim 1, wherein: The top of the main bridge body (1) is fixedly connected to two guardrails (2), which can protect vehicles.

4. The hydraulic trestle for tunnel construction according to claim 1, characterized in that: The bottom end of the main bridge body (1) is fixedly connected with four casters (6), which can facilitate the horizontal movement of the main bridge body (1).

5. The hydraulic trestle for tunnel construction according to claim 1, characterized in that: The interior of each of the two fixed frames (5) is fixedly connected to a first hydraulic cylinder (13), and a connecting frame (8) is fixedly connected to one side of each of the two first hydraulic cylinders (13).

6. The hydraulic trestle for tunnel construction according to claim 5, characterized in that: The connecting frame (8) is provided with a rotating assembly inside. The rotating assembly includes a self-locking motor (9), a gear set (10), a rotating shaft (11), and a connecting plate (12), and there are two rotating assemblies.

7. The hydraulic trestle for tunnel construction according to claim 6, characterized in that: The self-locking motor (9) is fixedly installed on the front side of the connecting frame (8), and the output shaft of the self-locking motor (9) is connected to the rotating shaft (11) through a gear set (10). Both the front and rear ends of the rotating shaft (11) are fixedly connected to the connecting frame (8). The connecting plate (12) is fixedly sleeved on the rotating shaft (11), and one side of the connecting plate (12) is fixedly connected to the bridge (3).

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