Underground roadway damping device

Abstract

The utility model discloses an underground roadway damping device, and relates to the technical field of coal mine roadway support, the underground roadway damping device comprises two support frames, the tops of the two support frames are in sliding connection with limiting frames, the tops of the limiting frames are in sliding connection with a clamping plate, the interior of the clamping plate is in sliding connection with two sliding plates, and the two sliding plates are symmetrically distributed; after vibration is transmitted to the arc-shaped plate, the arc-shaped plate moves to drive the two supporting arms to rotate, so that the sliding plate is pushed to move and is matched with the second damper and the second spring to absorb the vibration, the first rubber pad can conduct buffering and vibration reduction on the sliding plate when the sliding plate resets, small-amplitude continuous vibration generated by mechanical operation can be absorbed, and the vibration reduction effect is good. When a roadway generates large-amplitude vibration, the two clamping plates can transversely move and get close to each other, the first damper is matched with the first spring to further absorb impact, the equipment can conveniently adapt to vibration of different degrees, two or more kinds of vibration can be classified, and the supporting effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mine roadway supporting technical field, concretely is a kind of underground roadway shock absorber. BACKGROUND

[0002] Underground roadway shock absorption is mainly to reduce the influence of vibration generated by blasting, mechanical operation and the like on roadway structure, equipment and personnel safety, and the roadway should avoid complex geological structure area, because the rock mass stability of these areas is poor, and the roadway shape adopts circular or arched roadway section, compared with rectangular section, circular or arched section can more evenly disperse stress, reduce stress concentration, and support and shock absorption are carried out in cooperation with anchor rod and steel support.

[0003] The influence of vibration generated by blasting and mechanical operation on underground roadway is significantly different, the influence of blasting vibration on underground roadway is large and concentrated in vibration intensity, the influence of mechanical operation vibration on underground roadway is relatively small but long in vibration duration, and the existing part of supporting device cannot be classified and vibration-absorbed according to the type of vibration, and single type of spring and damper is difficult to cope with multiple different degrees of vibration, so that the loss of spring and damper and other shock-absorbing components is large, the supporting effect is poor, it is inconvenient to use, and the adaptability is poor. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of underground roadway shock absorber to solve the problems raised in the above background.

[0005] To solve the above technical problems, the utility model provides a kind of underground roadway shock absorber, comprising,

[0006] Two support frames, the top of two support frames is slidably connected with limiting frame, the top of limiting frame is slidably connected with clamping plate, the inside of clamping plate is slidably connected with two sliding plates, and two sliding plates are symmetrically distributed.

[0007] Two arc-shaped plates, the inner wall of arc-shaped plate is rotatably connected with two supporting arms, and one end of supporting arm is rotatably connected with adjacent sliding plate.

[0008] Further, the inside of support frame is slidably connected with two positioning rods, the top end of positioning rod is fixedly connected with adjacent limiting frame, one side of support frame is fixedly connected with two hydraulic rods, and the output end of hydraulic rod is fixedly connected with adjacent limiting frame.

[0009] Further, auxiliary nails are fixedly connected at four corners at the bottom of support frame.

[0010] Further, the top of the two limiting frames is slidably connected with a connecting frame, the connecting frame is fixedly connected with the bottom of the adjacent clamping plate, the opposite sides of the two connecting frames are fixedly connected with L-shaped plates, a fixing frame is fixedly connected between the two limiting frames, four dampers I and four auxiliary rods are fixedly connected in the fixing frame, the auxiliary rods penetrate through the adjacent L-shaped plates and are slidably connected with the L-shaped plates, the output end of the damper I is fixedly connected with the adjacent L-shaped plate, and springs I are fixedly connected between the damper I and the adjacent L-shaped plate.

[0011] Further, one side of the sliding plate is fixedly connected with two dampers II, the output end of the damper II is movably clamped with a clamping block, and springs II are movably clamped between the damper II and the clamping block.

[0012] Further, the two ends of the clamping plate are slidably connected with positioning plates, the clamping block can be movably clamped with the adjacent positioning plate, and the two sides of the clamping plate are screwedly connected with two fixing screws, the fixing screws can penetrate through the adjacent clamping block and positioning plate.

[0013] Further, the inside of the clamping plate is fixedly connected with two rubber pads I, and the outer wall of the arc-shaped plate is fixedly connected with rubber pads II.

[0014] Further, the bottom of the sliding plate is rotatably connected with two rollers on the inner wall of the arc-shaped plate.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] When the vibration is conducted to the arc-shaped plate, the arc-shaped plate moves to drive the two supporting arms to rotate, so as to push the sliding plate to move, and the vibration is absorbed by cooperating with the damper II and the spring II, the rubber pad I can buffer and damp the sliding plate when the sliding plate is reset, small amplitude continuous vibration generated by mechanical operation can be absorbed, when the roadway generates large amplitude vibration, the two clamping plates can move transversely and approach each other, the damper I cooperates with the spring I to further absorb the impact, the equipment can adapt to various vibrations of different degrees, two or more different vibrations can be classified and handled flexibly, and the supporting effect is improved.

[0017] The two fixing screws are loosened and pulled out from the clamping block and the positioning plate, the positioning plate can be separated from the clamping block, then the clamping block and the spring II can be disassembled, so that the spring II can be disassembled more conveniently, micro cracks are generated in the spring II under the condition of long-term small amplitude vibration, with the increase of the use frequency, the cracks are gradually expanded, finally the material fatigue fracture occurs, the spring II loses elasticity, the regular replacement of the spring II can ensure the supporting and damping performance of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is L type plate side section structure schematic view in the utility model;

[0020] Figure 3 It is card plate side section structure schematic view in the utility model;

[0021] Figure 4 It is arc plate structure schematic view in the utility model;

[0022] Figure 5 It is slide plate side section structure schematic view in the utility model.

[0023] In the drawing: 10, support frame; 101, hydraulic rod; 102, positioning rod; 103, auxiliary nail; 11, limit frame; 111, connecting frame; 112, L type plate; 113, fixed frame; 114, damper one; 115, spring one; 116, auxiliary rod; 12, card plate; 121, slide plate; 1211, gyro wheel; 122, damper two; 123, spring two; 124, clamping block; 125, positioning plate; 126, fixed screw; 127, rubber pad one; 13, arc plate; 131, support arm; 132, rubber pad two. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a kind of underground roadway damping device, including two support frames 10, the top of two support frames 10 is slidably connected with limit frame 11, the top of limit frame 11 is slidably connected with card plate 12, the inside of card plate 12 is slidably connected with two slide plates 121, two slide plates 121 are symmetrically distributed;Two arc plates 13, the inner wall of arc plate 13 is rotatably connected with two support arms 131, one end of support arm 131 is rotatably connected with adjacent slide plate 121.

[0026] In specific implementation, starting the four hydraulic rods 101 can drive the limiting frame 11 and the components thereon to ascend, so that the two arc-shaped plates 13 are in full contact with the roadway, and after the vibration is conducted to the arc-shaped plates 13, the arc-shaped plates 13 are driven to move to rotate the two supporting arms 131, thereby pushing the sliding plates 121 to move and cooperating the damper two 122 and the spring two 123 to absorb the vibration, the setting of the rollers 1211 makes the two sliding plates 121 move more smoothly, fully conducts the energy, and the rubber pad one 127 can buffer and damp the sliding plates 121 when the sliding plates 121 reset, can absorb the small amplitude continuous vibration generated by the mechanical operation, when the roadway generates large amplitude vibration, the two clamping plates 12 can move transversely and approach each other, and the damper one 114 cooperates with the spring one 115 to further absorb the impact, facilitating the equipment to adapt to various degrees of vibration.

[0027] Rotating the two fixed screws 126 and pulling them out of the clamping block 124 and the positioning plate 125 can move the positioning plate 125 away from the clamping block 124, and then the clamping block 124 and the spring two 123 can be disassembled, so that the spring two 123 can be more conveniently disassembled, the spring two 123 will produce micro-cracks inside in the case of long-term dealing with small amplitude vibration, and with the increase of the number of uses, these cracks will gradually expand, eventually leading to material fatigue fracture, making the spring two 123 lose elasticity, and regular replacement of the spring two 123 can ensure the supporting and damping performance of the equipment.

[0028] Referring to Figure 1 , the inside of the support frame 10 is slidably connected with two positioning rods 102, the top end of the positioning rod 102 is fixedly connected with the adjacent limiting frame 11, one side of the support frame 10 is fixedly connected with two hydraulic rods 101, and the output end of the hydraulic rod 101 is fixedly connected with the adjacent limiting frame 11; the bottom of the support frame 10 is fixedly connected with an auxiliary nail 103 at four corners.

[0029] In specific implementation, the limiting of the positioning rod 102 by the support frame 10 realizes the sliding limiting of the limiting frame 11 in the vertical direction, synchronous starting of the four hydraulic rods 101 can drive the limiting frame 11 and the components thereon to ascend, facilitating the arc-shaped plate 13 to contact and support the inner top wall of the roadway with different heights and to dampen, when disassembling, the height of the limiting frame 11 as a whole can be reduced, thereby reducing the space occupied by the equipment and facilitating the transfer of the equipment, and the auxiliary nail 103 facilitates the clamping into the soft ground inside the roadway to strengthen the supporting effect.

[0030] Referring to Figure 2The top of each of the two limiting racks 11 is slidably connected with a connecting rack 111, the connecting rack 111 is fixedly connected with the bottom of the adjacent clamping plate 12, the opposite sides of the two connecting racks 111 are fixedly connected with L-shaped plates 112, the two limiting racks 11 are fixedly connected with a fixing rack 113, the inside of the fixing rack 113 is fixedly connected with four dampers one 114 and four auxiliary rods 116, the auxiliary rods 116 penetrate through the adjacent L-shaped plates 112 and are slidably connected with the L-shaped plates 112, the output end of the damper one 114 is fixedly connected with the adjacent L-shaped plate 112, and the damper one 114 is fixedly connected with the adjacent L-shaped plate 112 and is provided with a spring one 115.

[0031] In specific implementation, the limiting of the connecting rack 111 by the limiting rack 11 achieves the lateral sliding limiting of the clamping plate 12 and the upper parts thereof, so that when the roadway produces a large amplitude vibration, the two clamping plates 12 can move laterally and approach each other, the damper one 114 cooperates with the spring one 115 to further absorb the impact, the damper one 114 is a hydraulic damper HB-70, the device is convenient for adapting to various degrees of vibration, and the roadway is more stably supported and damped, and the auxiliary rod 116 assists the L-shaped plate 112 and the connecting rack 111 to slide and limit.

[0032] Referring to Figure 2 One side of the sliding plate 121 is fixedly connected with two dampers two 122, the output end of the damper two 122 is movably clamped with a clamping block 124, and the damper two 122 is movably clamped with the spring two 123 between the damper two 122 and the clamping block 124.

[0033] The two ends of the clamping plate 12 are slidably connected with positioning plates 125, the clamping block 124 can be movably clamped with the adjacent positioning plate 125, and the two sides of the clamping plate 12 are screw-connected with two fixed screws 126, the fixed screw 126 can penetrate through the adjacent clamping block 124 and the positioning plate 125.

[0034] The inside of the clamping plate 12 is fixedly connected with two rubber pads one 127, and the outer wall of the arc-shaped plate 13 is fixedly connected with rubber pads two 132.

[0035] The inside of the arc-shaped plate 13 is rotatably connected with the bottom of the sliding plate 121 through two rollers 1211.

[0036] In specific implementation, the vibration of the underground roadway caused by the mechanical operation is small and continuous, the rubber pads two 132 on the two arc-shaped plates 13 are in close contact with the top wall of the roadway, after the vibration is transmitted to the arc-shaped plate 13, the arc-shaped plate 13 moves to drive the two supporting arms 131 to rotate, so as to drive the sliding plate 121 to move, and the vibration is absorbed in cooperation with the damper two 122 and the spring two 123, the damper two 122 is a hydraulic damper HB-50, the rollers 1211 are arranged to make the two sliding plates 121 move more smoothly, the energy is fully conducted, and the rubber pad one 127 can buffer and damp the sliding plate 121 when the sliding plate 121 is reset;

[0037] After the spring two 123 is clamped on the damper two 122, the spring two 123 is preliminarily limited by the clamping of the clamping block 124 and the damper two 122, the sliding positioning plate 125 is clamped with the two clamping blocks 124, then the two fixed screws 126 are screwed through the clamping block 124 and the positioning plate 125, so that the spring two 123 can be more conveniently disassembled, the spring two 123 will produce micro cracks in the internal under long-term response to small amplitude vibration, with the increase of the use frequency, the cracks will gradually expand, eventually leading to material fatigue fracture, so that the spring two 123 loses elasticity, the regular replacement of the spring two 123 facilitates guaranteeing the supporting and damping performance of the equipment.

[0038] Working principle: when in use, starting the four hydraulic rods 101 can drive the limiting frame 11 and the upper parts thereof to rise, so that the two arc-shaped plates 13 are fully in close contact with the roadway, after the vibration is conducted to the arc-shaped plate 13, the arc-shaped plate 13 moves to drive the two supporting arms 131 to rotate, thereby pushing the sliding plates 121 to move, and cooperating with the damper two 122 and the spring two 123 to absorb the vibration, the setting of the rollers 1211 makes the two sliding plates 121 move more smoothly, fully conducts the energy, and the rubber pad one 127 can buffer the sliding plates 121 when the sliding plates 121 reset, thereby absorbing the small amplitude continuous vibration generated by the mechanical operation, when the roadway produces large amplitude vibration, the two clamping plates 12 can move horizontally and approach each other, the damper one 114 cooperates with the spring one 115 to further absorb the impact, thereby facilitating the equipment to adapt to various degrees of vibration.

[0039] The two fixed screws 126 are loosened and pulled out from the clamping block 124 and the positioning plate 125, the movable positioning plate 125 is separated from the clamping block 124, then the clamping block 124 and the spring two 123 can be disassembled, thereby the spring two 123 can be more conveniently disassembled, the spring two 123 will produce micro cracks in the internal under long-term response to small amplitude vibration, with the increase of the use frequency, the cracks will gradually expand, eventually leading to material fatigue fracture, so that the spring two 123 loses elasticity, the regular replacement of the spring two 123 facilitates guaranteeing the supporting and damping performance of the equipment.

[0040] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, are all included in the patent protection range of the present application.

Claims

1. A downhole tunnel shock mitigation device, characterized by, The utility model relates to a kind of support frame and support frame, including, Two support frames (10), the top of two support frames (10) is slidably connected with limiting frame (11), the top of limiting frame (11) is slidably connected with clamping plate (12), the inside of clamping plate (12) is slidably connected with two sliding plates (121), and two sliding plates (121) are symmetrically distributed; Two arc-shaped plates (13), the inner wall of arc-shaped plate (13) is rotatably connected with two supporting arms (131), and one end of supporting arm (131) is rotatably connected with adjacent sliding plate (121).

2. A downhole tunnel shock absorbing device as defined in claim 1, characterized in that: The inside of support frame (10) is slidably connected with two positioning rods (102), the top of positioning rod (102) is fixedly connected with adjacent limiting frame (11), and one side of support frame (10) is fixedly connected with two hydraulic rods (101), and the output end of hydraulic rod (101) is fixedly connected with adjacent limiting frame (11).

3. A downhole tunnel shock absorbing device as defined in claim 1, wherein: Auxiliary nail (103) is fixedly connected at four corners of the bottom of support frame (10).

4. A downhole tunnel shock absorbing device as defined in claim 1, wherein: The top of two limiting frames (11) is slidably connected with connecting frame (111), and connecting frame (111) is fixedly connected with the bottom of adjacent clamping plate (12), the opposite side of two connecting frames (111) is fixedly connected with L-shaped plate (112), and fixed frame (113) is fixedly connected between two limiting frames (11), four dampers one (114) and four auxiliary rods (116) are fixedly connected in fixed frame (113), auxiliary rod (116) penetrates adjacent L-shaped plate (112) and is slidably connected with it, the output end of damper one (114) is fixedly connected with adjacent L-shaped plate (112), spring one (115) is fixedly connected between damper one (114) and adjacent L-shaped plate (112).

5. A downhole tunnel shock absorbing device as defined in claim 1, wherein: One side of sliding plate (121) is fixedly connected with two dampers two (122), the output end of damper two (122) is movably clamped with clamping block (124), and spring two (123) is movably clamped between damper two (122) and clamping block (124).

6. A downhole tunnel damping device as defined in claim 5, wherein: Two ends of clamping plate (12) are slidably connected with positioning plate (125), clamping block (124) can be movably clamped with adjacent positioning plate (125), and two fixed screws (126) are screw-connected on the two sides of clamping plate (12), and fixed screw (126) can penetrate adjacent clamping block (124) and positioning plate (125).

7. A downhole tunnel damping device as defined in claim 1, wherein: Two rubber pads one (127) are fixedly connected in clamping plate (12), and rubber pad two (132) is fixedly connected on the outer wall of arc-shaped plate (13).

8. A downhole tunnel damping device as defined in claim 1, wherein: Two rollers (1211) are rotatably connected on the bottom of rotatable sliding plate (121) on the inner wall of arc-shaped plate (13).

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