Tunnel karst supporting device

Abstract

The utility model relates to the technical field of tunnel supporting, and discloses a tunnel karst supporting device which comprises a supporting cross rod, a groove is formed in the surface of the supporting cross rod, a spring is fixedly connected to the interior of the groove, a round rod is connected to the interior of the spring in a sleeved mode, and a concave sliding block is fixedly connected to the surface of the round rod. The inner wall of the concave sliding block is rotationally connected with an inclined rod. According to the tunnel karst supporting device, a telescopic square rod, a supporting piece, a first electric push rod and an adjusting assembly are arranged, a worker moves the device to a proper position, then the worker starts a second electric push rod, the second electric push rod is started to enable rolling wheels to move downwards, and then the worker wants to pull the device at the two ends; the length of the device can be adjusted, meanwhile, a worker can adjust the height of the device according to the actual situation requirement, and then the worker can better support the tunnel according to the actual requirement of the tunnel.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel support, in particular to a tunnel karst support device. Background Art

[0002] Tunnel karst support is a support measure taken when tunnel construction is carried out under karst geological conditions. Karst geology refers to the geological environment formed by soluble rocks such as limestone, gypsum, and rock salt due to underground dissolution, which has the characteristics of instability, easy dissolution, and easy collapse. Under karst geological conditions, tunnel construction faces risks such as rock cavities, groundwater surges, and pit collapse. Therefore, appropriate support measures need to be taken to protect the stability and safety of the tunnel.

[0003] A tunnel karst support device disclosed in publication number CN216477412U can perform real-time monitoring. Before concrete masonry is carried out, it can determine whether geological movement has occurred by observing whether there are marks on the marking plate, prevent collapse in advance and carry out reinforcement in time, which is safer and more reliable.

[0004] However, the tunnel karst support device has the following disadvantages:

[0005] (1) When the workers use the device to support the tunnel, it is not convenient for them to adjust the device according to the actual situation of the tunnel, which makes the device have certain limitations;

[0006] (2) When the device supports the tunnel, rocks may fall inside the tunnel. The falling rocks may hit the device and cause damage to the device. Utility Model Content

[0007] 1. Technical issues to be solved

[0008] The technical problem solved by the utility model is to provide a tunnel karst support device which is highly practical, can be simply operated and has a relatively simple structure. It solves the problem raised in the above background technology that when the workers use the device to support the tunnel, it is inconvenient for the workers to adjust the device according to the actual situation of the tunnel, which makes the device have certain limitations; and when the device supports the tunnel, rocks may fall inside the tunnel, and the fallen rocks may hit the device, causing damage to the device.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the utility model is implemented through the following technical solutions: a tunnel karst support device, including a support cross bar, a groove is opened on the surface of the support cross bar, a spring is fixedly connected to the inside of the groove, a round rod is sleeved inside the spring, a concave slider is fixedly connected to the surface of the round rod, an inclined rod is rotatably connected to the inner wall of the concave slider, one end of the inclined rod is rotatably connected to a concave fixing block, an arc plate is fixedly connected to the top of the concave fixing block, a telescopic square rod is fixedly connected to the bottom of the support cross bar, a support sheet is fixedly connected to one side of the telescopic square rod, a first electric push rod is fixedly connected to the surface of the support sheet, and an adjustment component is fixedly connected to the bottom of the telescopic square rod.

[0011] Optionally, an L-shaped rod is fixedly connected to the surface of the adjustment component, a second electric push rod is fixedly connected to the bottom of the L-shaped rod, and a roller is fixedly connected to one end of the second electric push rod, so that the roller facilitates the movement of the fixed rod to both ends;

[0012] Optionally, an arc-shaped groove is provided on one side of the arc-shaped plate, and an arc-shaped support plate is slidably connected inside the arc-shaped groove, so that the arc-shaped support plate facilitates the extension of the device.

[0013] Optionally, a connecting piece is fixedly connected to one side of the first electric push rod, and one end of the connecting piece is fixedly connected to the top of one side of the telescopic square rod. The connecting piece facilitates the first electric push rod to drive the telescopic square rod to extend upward.

[0014] Optionally, the adjustment assembly includes a fixing rod, an adjusting rod and a fixing bolt, a sliding groove is provided on one side of the fixing rod, the adjusting rod is slidably connected inside the sliding groove, a threaded hole is provided at the edge of the surface of the fixing rod, the fixing bolt is threadedly connected inside the threaded hole, a threaded circular hole is provided on the surface of the adjusting rod, and the fixing bolt is used to fix the adjusting rod.

[0015] Optionally, one end of the adjustment component is fixedly connected to a limit block, a threaded hole is provided on the surface of the limit block, and an internal thread of the threaded hole is connected to a fixing nail, thereby fixing the device.

[0016] (III) Beneficial effects

[0017] The utility model provides a tunnel karst support device, which has the following beneficial effects:

[0018] 1. The tunnel karst support device, through the setting of the telescopic square rod, the support plate, the first electric push rod and the adjustment component, the staff moves the device to a suitable position, and then the staff starts the second electric push rod, the second electric push rod starts to move the roller downward, and then the staff pulls the device at both ends so that the length of the device can be adjusted. At the same time, the staff can adjust the height of the device according to the actual needs, so that the staff can better support the tunnel according to the actual needs of the tunnel, thereby improving the practicality of the device.

[0019] 2. The tunnel karst support device is provided with a spring, a concave slider, an inclined rod and an arc plate. When the device supports the tunnel, rocks may fall in the tunnel. When the rocks fall onto the arc plate, the arc plate moves downward, causing the inclined rod to move, and the inclined rod drives the concave slider to move. The movement of the concave slider compresses the spring, and the force generated by the compression of the spring reduces the shock of the device, thereby reducing damage to the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall split structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the adjustment component of the utility model;

[0023] Figure 4 This is a schematic diagram of the oblique rod structure of the utility model.

[0024] In the figure: 1. supporting cross bar; 2. spring; 3. round rod; 4. concave sliding block; 5. oblique rod; 6. concave fixing block; 7. arc plate; 8. telescopic square rod; 9. supporting plate; 10. first electric push rod; 11. adjusting assembly; 1101. fixing rod; 1102. adjusting rod; 1103. fixing bolt; 12. L-shaped rod; 13. second electric push rod; 14. arc supporting plate; 15. connecting plate; 16. limiting block; 17. fixing nail. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1 to 4The utility model provides a technical solution: a tunnel karst supporting device, including a supporting cross bar 1, a groove is opened on the surface of the supporting cross bar 1, a spring 2 is fixedly connected inside the groove, a round rod 3 is sleeved inside the spring 2, a concave slider 4 is fixedly connected to the surface of the round rod 3, an inclined rod 5 is rotatably connected to the inner wall of the concave slider 4, one end of the inclined rod 5 is rotatably connected to a concave fixing block 6, and an arc plate 7 is fixedly connected to the top of the concave fixing block 6. Through the arrangement of the spring 2, the concave slider 4, the inclined rod 5 and the arc plate 7, when the device supports the tunnel, rocks may fall in the tunnel. When the fallen rocks fall on the arc plate 7, the arc plate 7 moves downward, causing the inclined rod 5 to move, and the inclined rod 5 drives the concave slider 4 to move. The movement of the concave slider 4 compresses the spring 2, and the force generated by the compression of the spring 2 reduces the shock of the device, thereby reducing In order to reduce the damage of the device, the bottom of the supporting cross bar 1 is fixedly connected with a telescopic square rod 8, one side of the telescopic square rod 8 is fixedly connected with a support plate 9, the surface of the support plate 9 is fixedly connected with a first electric push rod 10, and the bottom of the telescopic square rod 8 is fixedly connected with an adjustment component 11. Through the setting of the telescopic square rod 8, the support plate 9, the first electric push rod 10 and the adjustment component 11, the staff moves the device to a suitable position, and then the staff starts the second electric push rod 13. The second electric push rod 13 is started to move the roller downward, and then the staff pulls the device at both ends to adjust the length of the device. At the same time, the staff can adjust the height of the device according to the actual needs, so that the staff can better support the tunnel according to the actual needs of the tunnel, thereby improving the practicality of the device. The model of the first electric push rod 10 is Electrak HD, speed: Electrak HD series has fast movement speed, usually between 0.50 inches (12.7 mm) and 4.00 inches (101.6 mm) per minute; Protection level: Electrak HD push rods usually meet IP66 or higher protection levels, can work in harsh environments, and provide dust and water resistance; Control options: Electrak HD can provide a variety of control options, including manual control, wireless remote control and integrated control system, etc. The model of the second electric push rod 13 is LINAK LA12 voltage: 12V DC or 24V DC (depending on the product model and application scenario); Maximum thrust: about 1200N (depending on the product model); Maximum pulling force: about 800N (depending on the product model); Speed: maximum about 38mm / s; Safety limit switch: built-in; Encoder: none;

[0027] The surface of the adjustment component 11 is fixedly connected with an L-shaped rod 12, the bottom of the L-shaped rod 12 is fixedly connected with a second electric push rod 13, and one end of the second electric push rod 13 is fixedly connected with a roller. The setting of the roller facilitates the movement of the fixed rod 1101 to both ends.

[0028] An arc-shaped groove is provided on one side of the arc-shaped plate 7, and an arc-shaped support plate 14 is slidably connected inside the arc-shaped groove. The arrangement of the arc-shaped support plate 14 facilitates the extension of the device.

[0029] A connecting piece 15 is fixedly connected to one side of the first electric push rod 10. The setting of the connecting piece 15 facilitates the first electric push rod 10 to drive the telescopic square rod 8 to extend upward. One end of the connecting piece 15 is fixedly connected to the top of one side of the telescopic square rod 8.

[0030] The adjustment assembly 11 includes a fixing rod 1101, an adjustment rod 1102 and a fixing bolt 1103. A slide groove is provided on one side of the fixing rod 1101, and the adjusting rod 1102 is slidably connected inside the slide groove. A threaded hole is provided on the edge of the surface of the fixing rod 1101, and the fixing bolt 1103 is threadedly connected inside the threaded hole. The fixing bolt 1103 is arranged to fix the adjusting rod 1102. A threaded circular hole is provided on the surface of the adjusting rod 1102.

[0031] One end of the adjustment component 11 is fixedly connected to a limit block 16 , a threaded hole is provided on the surface of the limit block 16 , and a fixing nail 17 is connected to the inner thread of the threaded hole. The setting of the fixing nail 17 plays a role in fixing the device.

[0032] In the utility model, the working steps of the device are as follows:

[0033] Step 1: First, the staff moves the device to a suitable position, and then the staff starts the second electric push rod 13, which makes the roller move downward. Then, the staff pulls the device at both ends to adjust the length of the device. At the same time, the staff can adjust the height of the device according to the actual needs, so that the staff can better support the tunnel according to the actual needs of the tunnel;

[0034] The second step: when the device supports the tunnel, rocks may fall in the tunnel. When the rocks fall onto the arc plate 7, the arc plate 7 moves downward, causing the inclined rod 5 to move. The inclined rod 5 drives the concave slider 4 to move. The movement of the concave slider 4 compresses the spring 2. The force generated by the compression of the spring 2 reduces the shock of the device, thereby reducing damage to the device.

[0035] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0036] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel karst support device, comprising a support crossbar (1), characterized in that: The surface of the supporting cross bar (1) is provided with a groove, the interior of the groove is fixedly connected with a spring (2), the interior of the spring (2) is sleeved with a round rod (3), the surface of the round rod (3) is fixedly connected with a concave slider (4), the inner wall of the concave slider (4) is rotatably connected with an inclined rod (5), one end of the inclined rod (5) is rotatably connected with a concave fixing block (6), the top of the concave fixing block (6) is fixedly connected with an arc plate (7), the bottom of the supporting cross bar (1) is fixedly connected with a telescopic square rod (8), one side of the telescopic square rod (8) is fixedly connected with a support sheet (9), the surface of the support sheet (9) is fixedly connected with a first electric push rod (10), and the bottom of the telescopic square rod (8) is fixedly connected with an adjustment component (11).

2. A tunnel karst support device according to claim 1, characterized in that: An L-shaped rod (12) is fixedly connected to the surface of the adjustment component (11), a second electric push rod (13) is fixedly connected to the bottom of the L-shaped rod (12), and a roller is fixedly connected to one end of the second electric push rod (13).

3. A tunnel karst support device according to claim 1, characterized in that: An arc-shaped groove is provided on one side of the arc-shaped plate (7), and an arc-shaped supporting plate (14) is slidably connected inside the arc-shaped groove.

4. A tunnel karst support device according to claim 1, characterized in that: A connecting piece (15) is fixedly connected to one side of the first electric push rod (10), and one end of the connecting piece (15) is fixedly connected to the top of one side of the telescopic square rod (8).

5. The tunnel karst support device according to claim 1, characterized in that: The adjustment assembly (11) comprises a fixing rod (1101), an adjustment rod (1102) and a fixing bolt (1103); a sliding groove is provided on one side of the fixing rod (1101); the adjusting rod (1102) is slidably connected inside the sliding groove; a threaded hole is provided at the edge of the surface of the fixing rod (1101); the fixing bolt (1103) is threadedly connected inside the threaded hole; and a threaded circular hole is provided on the surface of the adjustment rod (1102).

6. A tunnel karst support device according to claim 1, characterized in that: One end of the adjustment component (11) is fixedly connected to a limit block (16); a threaded hole is provided on the surface of the limit block (16); a fixing nail (17) is threadedly connected to the interior of the threaded hole.

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