An assembled quick support structure for tunnel rescue

Abstract

The utility model relates to a tunnel construction technical field especially relates to a kind of assembly type quick support structure for tunnel rescue, including support plate and adjusting box, multiple adjusting boxes are respectively fixedly connected on the inner side wall of support plate, adjusting mechanism is equipped on the adjusting box, the adjusting mechanism includes screw rod, connecting plate, sliding rod, push plate, extruding block, multiple screw rods are respectively rotatably connected on the inner side wall of adjusting box, the connecting plate is screw-threaded connection on the outer surface of screw rod, the utility model is cooperated by screw rod, worm, extruding block and other structures, rotates and drives worm movement, makes multiple screw rods rotate, respectively drives multiple sliding rods and push plate movement, cooperates with adjusting spring and extruding block, makes multiple extruding blocks move up, adjusting spring deformation makes extruding block respectively adhere to the uneven inner wall of tunnel deformation, the degree of adhesion is higher, and the supporting effect is better.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to a prefabricated rapid support structure for tunnel emergency rescue. Background Technology

[0002] Support structures refer to the structures built around the tunnel body using steel bars, concrete, and other building materials to prevent deformation or collapse of the surrounding rock during tunnel construction or operation. Typically, after tunnel excavation, an outer layer of flexible support (usually shotcrete and anchor support) is promptly installed in close contact with the surrounding rock, also known as initial support. This allows for a certain degree of deformation of the surrounding rock without causing excessive deformation due to loosening pressure. After the deformation of the surrounding rock has basically stabilized, an inner layer of lining (usually cast-in-place) is then installed, also known as secondary lining or secondary support. However, when a tunnel collapses during excavation or encounters dangerous situations such as earthquakes, fault zone deformation, or train collisions during operation, the original support structure of the tunnel will deform. Therefore, an unstable support structure will pose a great hidden danger to tunnel rescue and may cause secondary disasters at any time. During rescue operations, it is necessary to build temporary support structures to support the deformed tunnel.

[0003] The patent document with application number "CN202222183960.9" discloses a temporary support structure that can quickly install and remove installation pulleys, facilitating the transfer and installation of temporary support frames.

[0004] Although the temporary support structure in the above document can be quickly moved and installed, the support structure is relatively fixed. However, tunnels are prone to deformation after an emergency. Therefore, the fixed assembled support structure has a low degree of matching with the tunnel, the support structure does not conform to the tunnel outline, and the support effect is poor. Utility Model Content

[0005] The purpose of this utility model is to address the following shortcomings in the prior art: although the temporary support structure in the above documents can be quickly transferred and installed, the support structure is relatively fixed, and the tunnel is prone to deformation after an emergency. Therefore, the fixed assembled support structure has a low degree of matching with the tunnel, the support structure does not fit the tunnel outline, and the support effect is poor. Therefore, a prefabricated rapid support structure for tunnel emergency rescue is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A prefabricated rapid support structure for tunnel emergency rescue includes a support plate and adjustment boxes, wherein multiple adjustment boxes are respectively fixedly connected to the inner sidewall of the support plate; The regulating box is equipped with an regulating mechanism, which includes a screw, a connecting plate, a slide rod, a push plate, and an extrusion block. The screws are rotatably connected to the inner side wall of the regulating box, the connecting plate is threaded to the outer surface of the screw, the slide rod is fixedly connected to the side wall of the connecting plate, the push plate is fixedly connected to the end of the slide rod away from the connecting plate, and the extrusion block is slidably connected to the side wall of the push plate.

[0007] Preferably, a worm gear is rotatably connected to the inner side wall of the regulating box, and a worm wheel is fixedly connected to the outer surface of the screw, with multiple worm wheels respectively meshing with the worm gear.

[0008] Preferably, a rotating rod is rotatably connected to the side wall of the regulating box, and a crank handle is provided at one end of the rotating rod.

[0009] Preferably, a first adjusting gear is fixedly connected to the outer surface of the rotating rod, and a second adjusting gear is fixedly connected to the outer surface of the worm gear, wherein the first adjusting gear and the second adjusting gear are meshed together.

[0010] Preferably, limit rods are fixedly connected to both ends of the extrusion block, and the limit rods are slidably connected to the push plate.

[0011] Preferably, an adjusting spring is fixedly connected between the push plate and the extrusion block.

[0012] Compared with the prior art, the beneficial effects of this utility model are: Through the cooperation of screws, worm gears, extrusion blocks, and other structures, rotating the rotating rod drives the worm gear to move, causing multiple screws to rotate, which in turn drives multiple sliding rods and push plates to move. In conjunction with adjusting springs and extrusion blocks, multiple extrusion blocks are moved upwards. Adjusting the deformation of the springs allows the extrusion blocks to fit against the uneven inner wall of the tunnel, resulting in a high degree of fit and good support effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the adjusting box structure of a prefabricated rapid support structure for tunnel emergency rescue proposed in this utility model; Figure 2 This is a schematic diagram of the support plate structure of a prefabricated rapid support structure for tunnel emergency rescue proposed in this utility model. Figure 3 This is a schematic diagram of a push plate structure for a prefabricated rapid support structure for tunnel emergency rescue proposed in this utility model. Figure 4 for Figure 3 A magnified view of part A in the image; Figure 5 This is a schematic diagram of the extrusion block structure of a prefabricated rapid support structure for tunnel emergency rescue proposed in this utility model.

[0014] In the diagram: 1 Support plate, 2 Adjustment box, 3 Screw, 4 Connecting plate, 5 Slide rod, 6 Push plate, 7 Extrusion block, 8 Worm, 9 Worm wheel, 10 Rotating rod, 11 First adjusting gear, 12 Second adjusting gear, 13 Limiting rod, 14 Adjusting spring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0017] Reference Figures 1-5A prefabricated rapid support structure for tunnel emergency rescue includes a support plate 1 (the lower end of the support plate 1 is equipped with a moving device, referring to the quick disassembly and installation pulley moving assembly in the patent document with application number CN202222183960.9, which is prior art and will not be described in detail here) and an adjustment box 2. The support plate 1 is arched and made of rectangular steel plates on both sides and an arched I-beam in the center, with multiple supporting steel columns fixed in the middle. The outline of the support plate 1 is slightly smaller than the tunnel, so it can still be inserted after the tunnel undergoes a certain deformation. Multiple adjustment boxes 2 are respectively fixedly connected to the inner wall of the support plate 1. The adjustment boxes 2 protect the internal components, prevent dust and impurities from entering, and facilitate lubrication. The adjustment box 2 is equipped with an adjustment mechanism, which includes a screw 3, a connecting plate 4, a slide rod 5, a push plate 6, and a pressing block 7. Multiple screws 3 are respectively rotatably connected to the inner wall of the adjustment box 2. The screws 3 are heavy-duty screws and have strong self-locking ability. The connecting plate 4 is threadedly connected to the screws. The outer surface of rod 3 is fixedly connected to the side wall of connecting plate 4 by sliding rod 5. Sliding rod 5 is slidably connected to support plate 1. Sliding rod 5 limits the connection plate 4 to prevent it from rotating. Push plate 6 is fixedly connected to the end of sliding rod 5 away from connecting plate 4. Extrusion block 7 is slidably connected to the side wall of push plate 6. Extrusion block 7 is hollow box-shaped with its outer wall supported by heavy steel plate, providing strong support. Its outer surface shape varies depending on its location and conforms to the tunnel outline. For example, it is arc-shaped at the tunnel arch shoulder, similar to the arc shape of the tunnel arch shoulder. During the sliding process, extrusion block 7 prevents debris such as gravel from entering push plate 6 and affecting its normal sliding. An adjusting spring 14 is fixedly connected between push plate 6 and extrusion block 7. The adjusting spring 14 has a large elastic force and can provide a large support deformation force, allowing tunnel fragments to deform to a certain extent. However, excessive deformation is not acceptable. The main support force is provided by support plate 1. Limiting rods 13 are fixedly connected to both ends of extrusion block 7, and the limiting rods 13 are slidably connected to push plate 6.

[0018] Combination Figure 4 A worm gear 8 is rotatably connected to the inner wall of the regulating box 2, and a worm wheel 9 is fixedly connected to the outer surface of the screw 3. Multiple worm wheels 9 are respectively meshed with the worm gear 8. The worm wheel 9 and the worm gear 8 also have a strong self-locking force and will not rotate automatically under pressure.

[0019] Combination Figure 4A rotating rod 10 is rotatably connected to the side wall of the regulating box 2. One end of the rotating rod 10 is equipped with a crank. A first adjusting gear 11 is fixedly connected to the outer surface of the rotating rod 10, and a second adjusting gear 12 is fixedly connected to the outer surface of the worm gear 8. The first adjusting gear 11 and the second adjusting gear 12 are meshed together. The diameter of the first adjusting gear 11 is much smaller than that of the second adjusting gear 12, which increases speed and decreases torque, so that the staff can easily crank it by hand and quickly unfold the device. The device is only used for temporary fixation and is suitable for existing tunnels that have been deformed due to accidents and whose damage is not high, and whose shape is similar to the original tunnel outline. It is not suitable for large-scale deformation due to earthquakes or other reasons with extremely high deformation.

[0020] In this invention, when an emergency occurs and the original tunnel structure deforms, the equipment is quickly moved to the location in the tunnel that requires support. The arched support plate 1 is placed under the original tunnel support structure. Then, the crank handle is turned to rotate the rotating rod 10. The rotating rod 10 drives the first adjusting gear 11 to rotate the second adjusting gear 12. The second adjusting gear 12 drives the worm gear 8 to rotate. The rotation of the worm gear 8 drives multiple worm wheels 9 to rotate. The rotation of the multiple worm wheels 9 drives the screw 3 to rotate. The rotation of the screw 3 drives multiple connecting plates 4 and sliding rods 5 to move upward. The sliding rods 5 drive the push plate 6 to move upward. The push plate 6 causes the limiting rod 13 and the pressing block 7 to move upward. When the pressing block 7 contacts the tunnel, it cannot move forward and compresses the adjusting spring 14. The degree of compression of the adjusting spring 14 varies depending on the degree of tunnel deformation, so that the pressing block 7 can fit evenly against the tunnel inner wall deformed by external force, resulting in a high degree of fit and good support effect.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly.

[0022] 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 prefabricated rapid support structure for tunnel emergency rescue, comprising a support plate (1) and an adjustment box (2), characterized in that, Multiple regulating boxes (2) are respectively fixedly connected to the inner sidewall of the support plate (1); The regulating box (2) is provided with an regulating mechanism, which includes a screw (3), a connecting plate (4), a slide rod (5), a push plate (6), and an extrusion block (7). Multiple screws (3) are rotatably connected to the inner side wall of the regulating box (2). The connecting plate (4) is threadedly connected to the outer surface of the screw (3). The slide rod (5) is fixedly connected to the side wall of the connecting plate (4). The push plate (6) is fixedly connected to the end of the slide rod (5) away from the connecting plate (4). The extrusion block (7) is slidably connected to the side wall of the push plate (6).

2. The prefabricated rapid support structure for tunnel emergency rescue according to claim 1, characterized in that, A worm gear (8) is rotatably connected to the inner wall of the regulating box (2), and a worm wheel (9) is fixedly connected to the outer surface of the screw (3). Multiple worm wheels (9) are respectively meshed with the worm gear (8).

3. A prefabricated rapid support structure for tunnel emergency rescue according to claim 2, characterized in that, A rotating rod (10) is rotatably connected to the side wall of the regulating box (2), and a crank handle is provided at one end of the rotating rod (10).

4. A prefabricated rapid support structure for tunnel emergency rescue according to claim 3, characterized in that, The outer surface of the rotating rod (10) is fixedly connected to a first adjusting gear (11), and the outer surface of the worm (8) is fixedly connected to a second adjusting gear (12). The first adjusting gear (11) and the second adjusting gear (12) are meshed together.

5. A prefabricated rapid support structure for tunnel emergency rescue according to claim 1, characterized in that, The two ends of the extrusion block (7) are respectively fixedly connected to limit rods (13), and the limit rods (13) are slidably connected to the push plate (6).

6. A prefabricated rapid support structure for tunnel emergency rescue according to claim 1, characterized in that, An adjusting spring (14) is fixedly connected between the push plate (6) and the extrusion block (7).

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