Supporting device for road, bridge and tunnel construction

Abstract

The utility model discloses a road bridge tunnel construction supporting device, which relates to the technical field of tunnel construction supporting devices and comprises a hydraulic cylinder, a base and a top seat, the base and the top seat are respectively fixed at the bottom end of the hydraulic cylinder and the top of an output end, and an auxiliary reinforcing component is arranged between the base and the top seat. The auxiliary reinforcing assembly is used for sharing pressure for the hydraulic cylinder and comprises a fixing cylinder column, a lifting lead screw, a polygonal nut and a connecting screw cylinder. The auxiliary reinforcing assembly is arranged, pressure borne by the hydraulic cylinder can be shared through cooperation of the two sets of lifting lead screws and the fixing cylinder, extrusion force borne by the hydraulic cylinder can be reduced, meanwhile, when the hydraulic cylinder leaks liquid and loses efficacy, the top seat can still keep a good stable supporting state, and the hydraulic cylinder is not prone to falling off. And the supporting safety of tunnel construction is further improved.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction support devices, specifically a road and bridge tunnel construction support device. Background Technology

[0002] Tunnel engineering is a structure built underground, underwater, or in mountains to lay railways or build highways for motor vehicles. In tunnel and underground engineering, wooden or steel frames are used as temporary supports. After the tunnel is excavated and formed, the temporary supports are gradually removed and replaced with integral thick lining as permanent support.

[0003] During the construction and installation of wooden supports and steel supports, hydraulic cylinders are used to provide installation positioning for the wooden supports and steel supports. After the wooden supports and steel supports are installed, the hydraulic cylinders can also play an auxiliary support role.

[0004] In practice, hydraulic cylinders can fail due to leakage, which can affect the support safety of tunnel projects. Therefore, in order to further improve the support stability of hydraulic cylinders, a support device for road, bridge and tunnel construction is provided. Utility Model Content

[0005] The purpose of this utility model is to provide a support device for road, bridge and tunnel construction in order to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a road, bridge and tunnel construction support device, including a hydraulic cylinder, a base and a top seat, wherein the base and the top seat are respectively fixed to the bottom end and the top of the output end of the hydraulic cylinder, and an auxiliary reinforcement component is provided between the base and the top seat, the auxiliary reinforcement component being used to share the pressure of the hydraulic cylinder;

[0007] The auxiliary reinforcement components include a fixed cylindrical column, a lifting screw, a polygonal nut, and a connecting screw cylinder;

[0008] The fixed cylinder is fixed to the top of the base, and the lifting screw is fixed to the bottom of the top seat and extends into the interior of the fixed cylinder;

[0009] The polygonal nut is threaded to the outside of the lifting screw, the connecting screw is fixed to the bottom of the polygonal nut and sleeved on the outside of the lifting screw, and the top of the fixed cylinder has an external thread that matches the internal thread of the connecting screw. When the hydraulic cylinder pushes the top seat to the supported surface, the polygonal nut and the connecting screw are spirally moved down to make the connecting screw and the top of the fixed cylinder threadedly connected and fixed, so as to achieve the height fixation of the top seat.

[0010] A triggering component is also provided on the outer side of the output end of the hydraulic cylinder and the outer side of the fixed cylinder. The triggering component is used to detect the threaded connection status between the connecting cylinder and the fixed cylinder.

[0011] As a further improvement of this utility model: the auxiliary reinforcement components are provided in two sets, and the two sets of auxiliary reinforcement components are symmetrically distributed with the hydraulic cylinder as the center.

[0012] As a further improvement of this utility model: the threads of the two sets of fixed cylinders and lifting screws are in opposite directions, and the threads of the same set of fixed cylinders and lifting screws are in the same direction.

[0013] As a further embodiment of this utility model: the triggering component includes a lifting plate, a reset spring, and a normally closed limit switch;

[0014] The lifting plate is sleeved on the outside of the output end of the hydraulic cylinder and the outside of the two fixed cylinder columns. The return spring is sleeved on the outside of the output end of the hydraulic cylinder, and the upper and lower ends of the return spring are fixedly connected to the top of the outer shell of the hydraulic cylinder and the bottom end of the lifting plate, respectively.

[0015] The normally closed limit switch is installed on one side of the outer wall of the hydraulic cylinder housing, and the top of the ball rocker arm of the normally closed limit switch is in contact with the lower surface of the lifting plate, and the terminal of the normally closed limit switch is connected in series with the control circuit of the hydraulic cylinder through a cable.

[0016] When the connecting screw cylinder moves down and connects with the threaded top of the fixed cylinder, the connecting screw cylinder presses the lifting plate down, causing the lifting plate to press the normally closed limit switch ball rocker arm to rotate, thereby achieving the effect of disconnecting the normally closed limit switch.

[0017] As a further improvement of this utility model: the lifting plate is formed with through holes at the position where it contacts the output end of the hydraulic cylinder and the fixed cylinder. The diameter of the central through hole matches the outer diameter of the output end of the hydraulic cylinder, and the outer diameter of the through holes on both sides is slightly larger than the outer diameter of the fixed cylinder and smaller than the outer diameter of the connecting screw.

[0018] As a further improvement of this utility model: the top horizontal height of the outer shell of the hydraulic cylinder is lower than the top horizontal height of the fixed cylinder column;

[0019] The initial position of the lifting plate is at the same horizontal level as the top of the fixed cylinder.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] By setting up auxiliary reinforcement components, the pressure on the hydraulic cylinder can be distributed through the cooperation of two sets of lifting screws and fixed cylinder columns. This not only reduces the compressive force on the hydraulic cylinder, but also ensures that the top seat can maintain a good and stable support state when the hydraulic cylinder fails due to leakage, further improving the support safety of tunnel construction. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram showing the disassembled triggering component of this utility model;

[0024] Figure 3 This is a bottom view of the structure of this utility model after removing the lifting plate and the reset spring.

[0025] In the diagram: 1. Hydraulic cylinder; 2. Base; 3. Top seat; 4. Auxiliary reinforcement assembly; 401. Fixed cylinder; 402. Lifting screw; 403. Polygonal nut; 404. Connecting screw; 5. Trigger assembly; 501. Lifting plate; 502. Return spring; 503. Normally closed limit switch. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-3 In this embodiment of the utility model, a road bridge tunnel construction support device includes a hydraulic cylinder 1, a base 2, and a top seat 3. The base 2 and the top seat 3 are respectively fixed to the bottom end and the top of the output end of the hydraulic cylinder 1. An auxiliary reinforcement component 4 is provided between the base 2 and the top seat 3. The auxiliary reinforcement component 4 is used to share the pressure of the hydraulic cylinder 1.

[0028] The auxiliary reinforcement component 4 includes a fixed cylindrical column 401, a lifting screw rod 402, a polygonal nut 403, and a connecting screw cylinder 404;

[0029] The fixed cylinder 401 is fixed to the top of the base 2, and the lifting screw 402 is fixed to the bottom of the top seat 3 and extends into the interior of the fixed cylinder 401;

[0030] The polygonal nut 403 is threaded to the outside of the lifting screw 402. The connecting screw 404 is fixed to the bottom of the polygonal nut 403 and sleeved on the outside of the lifting screw 402. The top outer side of the fixed cylinder 401 is formed with an external thread that matches the internal thread of the connecting screw 404. When the hydraulic cylinder 1 pushes the top seat 3 to the supported surface, the polygonal nut 403 and the connecting screw 404 spiral down to make the connecting screw 404 threadedly connected and fixed to the top of the fixed cylinder 401, so as to achieve the height fixation of the top seat 3.

[0031] A triggering component 5 is also provided on the outer side of the output end of the hydraulic cylinder 1 and the outer side of the fixed cylinder 401. The triggering component 5 is used to detect the threaded connection status between the connecting screw cylinder 404 and the fixed cylinder 401.

[0032] The auxiliary reinforcement component 4 is provided in two sets, and the two sets of auxiliary reinforcement components 4 are symmetrically distributed with the hydraulic cylinder 1 as the center.

[0033] In this embodiment: when using the hydraulic cylinder 1 to support tunnel construction, the entire device can be placed in a designated position, and then the hydraulic cylinder 1 is activated to push the top seat 3 upward to fit tightly against the supported surface (it should be noted that the top of the top seat 3 can be set into different shapes according to the trajectory of the supported surface, such as a horizontal surface, an arc surface, etc.). During this process, the lifting screw 402, the polygonal nut 403, and the connecting screw 404 move the top seat 3 upward synchronously (it should be noted that the connecting screw 404 is initially separated from the fixed cylinder 401). After the height of the top seat 3 is determined, external tools (e.g., The polygonal nut 403 is tightened with a wrench to move it downward along the outer wall of the lifting screw 402. This allows the connecting screw cylinder 404 to move down and contact the fixed cylinder 401, connecting with its outer external thread. At this point, the lifting screw 402 and the fixed cylinder 401 are relatively fixed. The pressure on the hydraulic cylinder 1 can be distributed through the cooperation of the two sets of lifting screws 402 and fixed cylinder 401. This not only reduces the squeezing force on the hydraulic cylinder 1, but also ensures that the top seat 3 can maintain a good and stable support state when the hydraulic cylinder 1 leaks and fails, further improving the support safety of tunnel construction.

[0034] Please refer to this carefully. Figures 1-3 The threads of the two sets of fixed cylinders 401 and lifting screws 402 are in opposite directions, and the threads of the same set of fixed cylinders 401 and lifting screws 402 are in the same direction.

[0035] In this embodiment, this structure allows the polygonal nuts 403 on the two sets of auxiliary reinforcing components 4 to rotate in opposite directions as they spiral downwards, thus providing a certain degree of anti-loosening effect.

[0036] Please refer to this carefully. Figures 1-3The triggering component 5 includes a lifting plate 501, a reset spring 502, and a normally closed limit switch 503;

[0037] The lifting plate 501 is sleeved on the outside of the output end of the hydraulic cylinder 1 and the outside of the two fixed cylinders 401. The return spring 502 is sleeved on the outside of the output end of the hydraulic cylinder 1, and the upper and lower ends of the return spring 502 are fixedly connected to the top of the outer shell of the hydraulic cylinder 1 and the bottom end of the lifting plate 501, respectively.

[0038] The normally closed limit switch 503 is installed on one side of the outer wall of the housing of the hydraulic cylinder 1, and the top of the ball rocker arm of the normally closed limit switch 503 is in contact with the lower surface of the lifting plate 501, and the wiring terminal of the normally closed limit switch 503 is connected in series with the control circuit of the hydraulic cylinder 1 through a cable.

[0039] When the connecting screw 404 moves down and is threaded to the top of the fixed cylinder 401, the connecting screw 404 presses the lifting plate 501 to move down, causing the lifting plate 501 to press the normally closed limit switch 503 ball rocker to rotate, thereby achieving the effect of disconnecting the normally closed limit switch 503.

[0040] The lifting plate 501 has through holes formed at the positions where it contacts the output end of the hydraulic cylinder 1 and the fixed cylinder 401. The diameter of the middle through hole matches the outer diameter of the output end of the hydraulic cylinder 1, and the outer diameter of the two through holes is slightly larger than the outer diameter of the fixed cylinder 401 and smaller than the outer diameter of the connecting screw 404.

[0041] The top of the outer casing of hydraulic cylinder 1 is lower than the top of the fixed cylinder 401.

[0042] The initial position of the upper surface of the lifting plate 501 is level with the top of the fixed cylinder 401.

[0043] In this embodiment: when the connecting screw 404 is not yet connected to the fixed cylinder 401, the lifting plate 501 is at its highest position under the support of the return spring 502. At this time, the normally closed limit switch 503 is not squeezed and is in the normally closed state, and the control circuit of its hydraulic cylinder 1 can be opened and closed normally, thereby controlling the lifting and lowering operation of the hydraulic cylinder 1.

[0044] When the connecting screw 404 moves down and connects with the fixed cylinder 401, the connecting screw 404 will contact the lifting plate 501 and press it down. The downward movement of the lifting plate 501 will further compress the return spring 502, and at the same time, it will press the ball rocker arm of the normally closed limit switch 503 to rotate, thereby triggering the normally closed limit switch 503 to the open state. This will disconnect the control circuit of the hydraulic cylinder 1, meaning that the hydraulic cylinder 1 cannot be started again at this time. This avoids the situation where the hydraulic cylinder 1 starts when the connecting screw 404 and the fixed cylinder 401 are connected, causing the two to interfere with each other and cause a malfunction.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A road, bridge, and tunnel construction support device, comprising a hydraulic cylinder (1), a base (2), and a top seat (3), wherein the base (2) and the top seat (3) are respectively fixed to the bottom end and the top of the output end of the hydraulic cylinder (1), characterized in that, An auxiliary reinforcement component (4) is provided between the base (2) and the top seat (3), and the auxiliary reinforcement component (4) is used to share the pressure of the hydraulic cylinder (1). The auxiliary reinforcement component (4) includes a fixed cylinder (401), a lifting screw (402), a polygonal nut (403), and a connecting screw (404). The fixed cylinder (401) is fixed to the top of the base (2), and the lifting screw (402) is fixed to the bottom of the top seat (3) and extends into the interior of the fixed cylinder (401); The polygonal nut (403) is threaded to the outside of the lifting screw (402). The connecting screw (404) is fixed to the bottom of the polygonal nut (403) and sleeved on the outside of the lifting screw (402). The top outer side of the fixed cylinder (401) is formed with an external thread that matches the internal thread of the connecting screw (404). When the hydraulic cylinder (1) pushes the top seat (3) to the supported surface, the polygonal nut (403) and the connecting screw (404) are spirally moved down to make the connecting screw (404) threaded to the top of the fixed cylinder (401) and fixed, so as to realize the height fixation of the top seat (3). A trigger assembly (5) is also provided on the outer side of the output end of the hydraulic cylinder (1) and the outer side of the fixed cylinder (401). The trigger assembly (5) is used to detect the threaded connection status between the connecting screw (404) and the fixed cylinder (401).

2. The road, bridge, and tunnel construction support device according to claim 1, characterized in that, The auxiliary reinforcement component (4) is provided in two sets, and the two sets of auxiliary reinforcement components (4) are symmetrically distributed with the hydraulic cylinder (1) as the center.

3. The road, bridge, and tunnel construction support device according to claim 2, characterized in that, The threads of the two sets of fixed cylinders (401) and lifting screws (402) are opposite in direction, and the threads of the fixed cylinders (401) and lifting screws (402) in the same set are in the same direction.

4. A road, bridge, and tunnel construction support device according to claim 2, characterized in that, The triggering component (5) includes a lifting plate (501), a reset spring (502), and a normally closed limit switch (503); The lifting plate (501) is sleeved on the outside of the output end of the hydraulic cylinder (1) and the outside of the two fixed cylinders (401). The return spring (502) is sleeved on the outside of the output end of the hydraulic cylinder (1), and the upper and lower ends of the return spring (502) are fixedly connected to the top of the outer shell of the hydraulic cylinder (1) and the bottom end of the lifting plate (501), respectively. The normally closed limit switch (503) is installed on one side of the outer wall of the housing of the hydraulic cylinder (1), and the top of the ball swing arm of the normally closed limit switch (503) is in contact with the lower surface of the lifting plate (501), and the terminal of the normally closed limit switch (503) is connected in series with the control circuit of the hydraulic cylinder (1) through a cable. When the connecting screw (404) moves down and is threaded to the top of the fixed cylinder (401), the connecting screw (404) squeezes the lifting plate (501) to move down, causing the lifting plate (501) to squeeze the ball rocker of the normally closed limit switch (503) to rotate, thereby achieving the effect of disconnecting the normally closed limit switch (503).

5. A road, bridge, and tunnel construction support device according to claim 4, characterized in that, The lifting plate (501) has through holes formed at the positions where it contacts the output end of the hydraulic cylinder (1) and the fixed cylinder (401). The diameter of the central through hole matches the outer diameter of the output end of the hydraulic cylinder (1), and the outer diameter of the through holes on both sides is slightly larger than the outer diameter of the fixed cylinder (401) and smaller than the outer diameter of the connecting screw (404).

6. A road, bridge, and tunnel construction support device according to claim 4, characterized in that, The top of the outer shell of the hydraulic cylinder (1) is lower than the top of the fixed cylinder (401); The initial position of the upper surface of the lifting plate (501) is level with the top of the fixed cylinder (401).

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