Supporting device for preventing tunnel collapse

Abstract

A supporting device for preventing tunnel collapse belongs to the technical field of tunnel construction equipment, can solve the problem that an existing supporting mechanism for preventing tunnel collapse is low in supporting efficiency, and comprises a base, a U-shaped frame and a first motor are fixedly mounted at the top of the base, and the first motor is located in the U-shaped frame; a limiting rod and a two-way lead screw are arranged above and below the position between the inner side faces of the U-shaped frame correspondingly, the limiting rod and the two-way lead screw are movably sleeved with a first nut and a second nut which are symmetrical correspondingly, connecting blocks are fixedly installed between the first nut and the second nut in the same vertical direction, and supporting rods are fixedly installed at the ends, away from each other, of the connecting blocks. One end of the supporting rod penetrates through the U-shaped frame and is connected with a first supporting plate, the output end of the first motor is connected with a driving bevel gear, and the middle of the outer surface of the bidirectional lead screw is sleeved with a driven bevel gear meshed with the driving bevel gear.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction equipment, and in particular relates to a supporting device for preventing tunnel collapse. Background Art

[0002] Railway and highway construction in mountainous areas often requires the construction of tunnels through the mountains. During tunnel construction, a series of support facilities are required to secure the equipment installed inside the tunnel to prevent collapse, thereby ensuring smooth construction. Traditional support mechanisms for landslide prevention utilize multiple hydraulic cylinders for horizontal and vertical displacement to support the inner side of the tunnel. However, the displacement rate of the support plates using hydraulic cylinders is slow, resulting in low support efficiency in preventing tunnel collapse.

[0003] In the patent application number CN202120134499.0, the horizontal support is achieved by using the hydraulic rods on both sides to drive the corresponding side guard plates to move, and the up and down movement of the support plate in the vertical direction is achieved by adjusting the vertical poles, spherical heads and adjusting the side rods. This method has the problem of low support efficiency. Utility Model Content

[0004] The utility model aims to solve the problem of low support efficiency of existing support mechanisms for preventing tunnel collapse and provides a support device for preventing tunnel collapse, which can synchronously move and rotate in opposite directions in the horizontal direction to complete vertical support, saving support adjustment time.

[0005] The utility model adopts the following technical solutions:

[0006] A support device for preventing tunnel collapse, comprising a base, a U-shaped frame and a first motor fixedly mounted on the top of the base, the first motor being located in the U-shaped frame, a limit rod and a bidirectional screw rod being respectively provided above and below the inner side surfaces of the U-shaped frame, two symmetrical first nuts and second nuts being movably sleeved on the limit rod and the bidirectional screw rod, a connecting block being fixedly mounted between the first nut and the second nut in the same vertical direction, a support rod being fixedly mounted on one end of the connecting block away from each other, one end of the support rod passing through the U-shaped frame and connected to the first support plate, an output end of the first motor being connected to a driving bevel gear, and a passive bevel gear meshing with the driving bevel gear being sleeved on the middle of the outer surface of the bidirectional screw rod.

[0007] Furthermore, two symmetrical bearing frames are fixedly installed on the top of the U-shaped frame, and a rotating rod is rotatably connected between the two bearing frames. A strip block is sleeved on the middle part of the rotating rod, and a telescopic support rod is installed on the top of the strip block. A second support plate is provided at one end of the telescopic support rod, and a second motor is provided on the outer side of one of the bearing frames, and the output end of the second motor is connected to one end of the rotating rod.

[0008] Furthermore, two symmetrical movable frames are provided at the bottom of the base, a hydraulic cylinder is provided between the two movable frames, the hydraulic cylinder is located in the middle of the base, the movable frames are connected to rollers through rollers, and a pressure plate is fixedly installed on the output end of the hydraulic cylinder.

[0009] Furthermore, the first motor and the second motor are both forward and reverse motors.

[0010] Furthermore, the support rod and the first support plate, as well as the telescopic support rod and the second support plate are all connected by threads.

[0011] Furthermore, outer side surfaces of the first support plate and the second support plate are both designed to be arc-shaped, and outer side surfaces of the first support plate and the second support plate are both provided with anti-slip oblique stripes.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The first motor drives the active bevel gear to rotate clockwise. The active bevel gear and the passive bevel gear engage with each other, so that the passive bevel gear starts to rotate simultaneously, and then the bidirectional lead screw starts to rotate clockwise. In conjunction with the connecting block and the limit rod, the first nut and the second nut move along the limit rod and the bidirectional lead screw respectively, thereby moving the two support rods away from each other, causing the two first support plates to move away from each other, pressing against the inner side surfaces of the two ends of the tunnel, and supporting the inner side surfaces of the tunnel in the horizontal direction.

[0014] 2. The design of the telescopic support rod can quickly adjust the distance between the second support plate and the strip block, so it can be used to support tunnel tops of different heights, with a wide range of applications.

[0015] 3. The second motor drives the rotating rod to rotate, and the bar block in the middle of the rotating rod's outer surface rotates accordingly. Cooperating with the telescopic support rod, the rotation angle of the second support plate is adjusted, so that the second support plate can quickly support the top wall of the tunnel, providing vertical support for the tunnel.

[0016] 4. The first support plate and the second support plate of the utility model are independent of each other. Compared with the traditional integrated mechanism, they can be independently adjusted according to the specific conditions of the tunnel, thereby improving the support effect and reducing the risk of tunnel collapse. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the utility model performing support in both horizontal and vertical directions simultaneously.

[0018] Figure 2 This is a schematic diagram of the vertical support of the utility model.

[0019] Figure 3 for Figure 1 Enlarged schematic diagram of point A in the middle.

[0020] Figure 4 for Figure 2 Enlarged schematic diagram of point B in the middle.

[0021] Figure 5 This is a schematic diagram of the horizontal support of the utility model.

[0022] Figure 6 This is a schematic diagram of the present invention without support in both horizontal and vertical directions.

[0023] Among them: 1-base; 2-U-shaped frame; 3-first motor; 4-limiting rod; 5-bidirectional screw; 6-first nut; 7-second nut; 8-connecting block; 9-support rod; 10-first support plate; 11-active bevel gear; 12-passive bevel gear; 13-bearing frame; 14-rotating rod; 15-bar block; 16-telescopic support rod; 17-second support plate; 18-second motor; 19-movable frame; 20-hydraulic cylinder; 21-roller; 22-pressure plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0025] Example 1

[0026] See also Figure 1-6 , a support device for preventing tunnel collapse, comprising a base 1, a U-shaped frame 2 and a first motor 3 are fixedly installed on the top of the base 1, and a limiting rod 4 and a bidirectional screw rod 5 are respectively provided above and below the inner side surfaces at both ends of the U-shaped frame 2, and the outer surfaces of the limiting rod 4 and the bidirectional screw rod 5 are respectively movably sleeved with two symmetrical first nuts 6 and second nuts 7, a connecting block 8 is fixedly installed between the first nut 6 and the second nut 7 in the same vertical direction, and a support rod 9 is fixedly installed on the ends of the two connecting blocks 8 away from each other, and the ends of the two support rods 9 away from the corresponding connecting blocks 8 pass through the U-shaped frame 2 and are provided with a first support plate 10, a driving bevel gear 11 is fixedly installed on the output end of the first motor 3, and a passive bevel gear 12 meshing with the driving bevel gear 11 is fixedly sleeved on the middle of the outer surface of the bidirectional screw rod 5;

[0027] Two symmetrical bearing frames 13 are fixedly installed on the top of the U-shaped frame 2, and a rotating rod 14 is rotatably connected between the two bearing frames 13. A strip block 15 is sleeved on the middle part of the outer surface of the rotating rod 14, and a telescopic support rod 16 is fixedly installed on the top of the strip block 15, and a second support plate 17 is provided at one end of the telescopic support rod 16 away from the strip block 15. A second motor 18 is fixedly installed on the outer side surface of one of the bearing frames 13, and the output end of the second motor 18 is fixedly connected to one end of the rotating rod 14.

[0028] To avoid tunnel collapse, support is adopted for the two inner side surfaces and the top of the tunnel in the horizontal direction, so the first motor 3 is started to rotate forward, so that the active bevel gear 11 starts to rotate forward, and since the active bevel gear 11 and the passive bevel gear 12 are engaged with each other, the bidirectional screw rod 5 starts to rotate, and with the cooperation between the connecting block 8, the limit rod 4 and the connecting block 8, the first nut 6 and the second nut 7 move along the limit rod 4 and the bidirectional screw rod 5 respectively, so that the two support rods 9 move away from each other, and then drive the two first support plates 10 away from each other, supporting the tunnel in the horizontal direction until the outer side surfaces of the two first support plates 10 touch the inner side surfaces of the tunnel and then the first motor 3 is turned off.

[0029] Then, the height of the telescopic support rod 16 is adjusted according to the vertical height between the top wall of the tunnel and the ground. After the adjustment is completed, the second motor 18 is started, and the second motor 18 drives the rotating rod 14 to rotate, so that the bar block 15 on the outer surface of the rotating rod 14 rotates accordingly, thereby driving the telescopic support rod 16 and the second support plate 17 to rotate accordingly, until the outer side surface of the second support plate 17 just touches the inner top wall of the tunnel, and then the second motor 18 is turned off.

[0030] Example 2

[0031] See also Figure 1-2 The difference between the embodiment 1 and the embodiment 1 is that two symmetrical movable frames 19 and a hydraulic cylinder 20 located in the middle are fixedly installed at the bottom of the base 1, and the two movable frames 19 are connected to rollers 21 through rollers, and a pressure plate 22 is fixedly installed at the output end of the hydraulic cylinder 20.

[0032] The device can be quickly moved to the position where the tunnel needs to be supported, and then the hydraulic cylinder 20 is started to move the pressure plate 22 downward and tightly press the tunnel face to fix the device to prevent the device from moving during the support process and affecting the support effect.

[0033] Example 3

[0034] See also Figure 5-6, combined with the basis of Example 1, the difference is that the support rod 9 and the first support plate 10, as well as the telescopic support rod 16 and the second support plate 17 are all threaded connections, the outer sides of the first support plate 10 and the second support plate 17 are both arc-shaped, and the outer sides of the first support plate 10 and the second support plate 17 are both provided with anti-slip diagonal stripes.

[0035] After supporting the tunnel for a long time, the first support plate 10 and the second support plate 17 will be damaged, which will affect the support effect and reduce the effect of preventing landslides. Afterwards, the first support plate 10 and the second support plate 17 can be removed from the support rod 9 and the telescopic support rod 16, and replaced with a new first support plate 10 and the second support plate 17, which ensures the later support effect and reduces the risk of tunnel collapse. In addition, the anti-slip oblique stripes on the outer sides of the first support plate 10 and the second support plate 17 increase the support effect on the tunnel in the horizontal and vertical directions, greatly reducing the risk of tunnel collapse.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A support device for preventing tunnel collapse, characterized by: The invention comprises a base (1), wherein a U-shaped frame (2) and a first motor (3) are fixedly installed on the top of the base (1), the first motor (3) is located in the U-shaped frame (2), and a limit rod (4) and a bidirectional screw rod (5) are respectively provided between the inner side surfaces of the U-shaped frame (2) at the upper and lower sides, two symmetrical first nuts (6) and second nuts (7) are movably sleeved on the limit rod (4) and the bidirectional screw rod (5), a connecting block (8) is fixedly installed between the first nut (6) and the second nut (7) in the same vertical direction, a support rod (9) is fixedly installed at one end of the connecting block (8) away from each other, one end of the support rod (9) passes through the U-shaped frame (2) and is connected to a first support plate (10), an output end of the first motor (3) is connected to a driving bevel gear (11), and a passive bevel gear (12) meshing with the driving bevel gear (11) is sleeved on the middle part of the outer surface of the bidirectional screw rod (5).

2. A support device for preventing tunnel collapse according to claim 1, characterized in that: Two symmetrical bearing frames (13) are fixedly installed on the top of the U-shaped frame (2), a rotating rod (14) is rotatably connected between the two bearing frames (13), a strip block (15) is sleeved on the middle of the rotating rod (14), a telescopic support rod (16) is installed on the top of the strip block (15), and a second support plate (17) is provided at one end of the telescopic support rod (16), a second motor (18) is provided on the outer side of one of the bearing frames (13), and an output end of the second motor (18) is connected to one end of the rotating rod (14).

3. The support device for preventing tunnel collapse according to claim 1, characterized in that: Two symmetrical movable frames (19) are provided at the bottom of the base (1), a hydraulic cylinder (20) is provided between the two movable frames (19), the hydraulic cylinder (20) is located in the middle of the base (1), a roller (21) is connected to the movable frame (19) via a roller, and a pressure plate (22) is fixedly installed at the output end of the hydraulic cylinder (20).

4. The support device for preventing tunnel collapse according to claim 2, characterized in that: The first motor (3) and the second motor (18) are both forward and reverse motors.

5. The support device for preventing tunnel collapse according to claim 2, characterized in that: The support rod (9) and the first support plate (10), as well as the telescopic support rod (16) and the second support plate (17), are all connected by threads.

6. The support device for preventing tunnel collapse according to claim 2, characterized in that: The outer side surfaces of the first support plate (10) and the second support plate (17) are both designed to be arc-shaped, and the outer side surfaces of the first support plate (10) and the second support plate (10) are both provided with anti-slip oblique stripes.

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