Coal mine tunnel winch with rope loosening protection mechanism

Abstract

The invention relates to the technical field of roadway winches, in particular to a coal mine roadway winch with a slack rope protection mechanism, which comprises a roadway winch body, a protection seat is arranged below the roadway winch body, a slack rope protection assembly is arranged on the protection seat, and the slack rope protection assembly comprises two groups of pushing plates. A trapezoidal abutting seat is mounted on one side of the pushing plate through a trapezoidal mounting seat, and a damping type reinforcing assembly is arranged on the trapezoidal abutting seat; the protection base is combined with the rope loosening protection assembly, sudden stop after falling of the protection base is achieved firstly, then inertia falling of the roadway winch body is utilized, a piston plate is forced to compress air in a buffer spring and the protection base, and the roadway winch body is effectively buffered; a damping type reinforcing assembly is combined, secondary fixing of the position of the protection base after sudden stop is achieved, and the inertia acting force applied to the protection base by the roadway winch body is eliminated; and meanwhile, the ascending and resetting speed of the piston plate is reversely slowed down, and secondary injury to personnel caused by rapid ascending of the piston plate is eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel winches, in particular to a coal mine tunnel winch with a loose rope protection mechanism. Background Art

[0002] Safety has always been the most important issue in the mining industry, especially for underground mining. Although the safety level has been greatly improved with the strengthening of management and the improvement of mechanization level, safety accidents still occur frequently. At present, coal mine tunnel winches generally need to be bound with a slack rope protection mechanism when they are hoisted into the mine.

[0003] For example, in the prior art, a slack rope protection device for underground transport winches in coal mines with a publication number of CN216997176U can slowly lower the winch body when the force rope on the winch body breaks, and play a buffering effect when the winch body falls to the bottom of the mine. However, in the short process from the rapid descent to the slow descent of the winch body, the inertial fall of the winch body and the personnel inside cannot be effectively buffered, so that there is still a problem of poor protection effect for the personnel inside the winch body. In view of the above technical defects, a solution is now proposed. Summary of the invention

[0004] The object of the present invention is to provide a coal mine tunnel winch with a loose rope protection mechanism to solve the technical defects mentioned above. The present invention combines a protective seat with a loose rope protection component to first realize an emergency stop after the protective seat falls, and then utilizes the inertial fall of the tunnel winch body in the protective seat to force the piston plate to compress the buffer spring and the air in the protective seat, thereby effectively buffering the tunnel winch body; and with the help of the discharge of air in the protective seat combined with the damping reinforcement component, the secondary fixation of the position of the protective seat after the emergency stop is realized, thereby eliminating the inertial force exerted by the tunnel winch body on the protective seat; at the same time, the speed of the piston plate rising and resetting is reversely slowed down, thereby eliminating the secondary damage to the personnel inside the tunnel winch body caused by the rapid rise of the piston plate.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A coal mine roadway winch with a loose rope protection mechanism comprises a roadway winch body, a protection seat is arranged below the roadway winch body, and a piston plate is slidably connected inside the protection seat, the roadway winch body is fixedly installed on the top of the piston plate, a plurality of groups of buffer springs distributed in a rectangular array are fixedly connected between the piston plate and the protection seat, and a telescopic rod is fixedly connected between the piston plate and the protection seat and inside the corresponding buffer spring; The protection seat is provided with a loose rope protection assembly, which includes two sets of push plates, and one side of the push plate is fixedly connected with a trapezoidal mounting seat, and a trapezoidal abutment seat is slidably mounted on the inclined surface of the trapezoidal mounting seat; The trapezoidal abutment seat is provided with a damping type reinforcement component matched with the piston plate, and the damping type reinforcement component comprises a piston block and a reinforcement nail rotatably connected to one side of the piston block.

[0006] Preferably, the bottom of both sides of the protection seat are symmetrically provided with mounting grooves 1, the push plate is slidably connected to the corresponding mounting groove 1, the top of the mounting groove 1 is provided with mounting groove 2, and the inside of the mounting groove 2 is slidably connected with a movable plate, sliding rods slidably connected to the protection seat are symmetrically welded on both sides of the top of the movable plate, and a cross plate is fixedly connected between the tops of the sliding rods, and a force rope is fixedly connected to the top of the cross plate.

[0007] Preferably, both the top and bottom sides of the second mounting groove are rotatably connected with rotating rods, and a chain is arranged between the rotating rods, a sprocket engaged with the chain is fixedly connected to the rotating rod, the movable plate is fixedly connected to the chain on one side of the sprocket, and a tension spring is fixedly connected between the movable plate and the bottom of the second mounting groove.

[0008] Preferably, a transmission gear is fixedly connected to the rotating rod under the movable plate, a transmission tooth plate meshing with the corresponding transmission gear is fixedly connected to the top of the push plate, mounting grooves three are symmetrically opened on the inner walls on both sides of the mounting groove one, a self-locking tooth block is slidably connected inside the mounting groove three, and a reset spring one is fixedly connected between the self-locking tooth block and the mounting groove three, and serrated tooth plates matching the corresponding self-locking tooth blocks are fixedly connected on both sides of the push plate.

[0009] Preferably, a plurality of convex grooves are equidistantly provided on the inclined surface of the trapezoidal mounting seat along its length direction, a convex block slidably connected to the corresponding convex grooves is fixedly connected to the trapezoidal abutment seat, and an anti-slip groove is provided on one side of the trapezoidal abutment seat.

[0010] Preferably, a diversion chamber is provided inside the trapezoidal abutment seat, and a plurality of piston grooves distributed in a rectangular array are provided on the side of the diversion chamber away from the trapezoidal mounting seat, the piston block is slidably connected in the corresponding piston groove, a connecting groove penetrating the trapezoidal abutment seat is provided on one side of the piston groove, and the reinforcement nail is slidably connected to the connecting groove.

[0011] Preferably, an exhaust hole connected to a corresponding mounting groove is provided at the bottom of the protection seat, an air inlet cavity is provided inside the push plate, and an air inlet slot is provided at the top of one side of the air inlet cavity, a sealing ring is embedded and installed at the top of the push plate on the outside of the air inlet slot, and a connecting pipe is fixedly connected between the air inlet cavity and the diversion cavity.

[0012] Preferably, a spiral guide groove is symmetrically provided on the inner side wall of the connecting groove, and a locking groove is provided on the side of the spiral guide groove away from the piston groove.

[0013] Preferably, a plurality of damping air holes are formed through the piston block, a guide pin matched with the corresponding spiral guide groove is fixedly connected to the reinforcing nail, and a second return spring is fixedly connected between the piston block and the piston groove.

[0014] The beneficial effects of the present invention are as follows: (1) In the present invention, when the force rope on the horizontal plate breaks, the movable plate quickly drops under the tensile force of the tension spring, and the meshing transmission gear and the transmission tooth plate synchronously drive the push plate to move, so that the trapezoidal abutment seat contacts the inner wall of the coal mine tunnel, driving the trapezoidal abutment seat to move upward on the inclined surface of the trapezoidal mounting seat, thereby increasing the abutment force between the trapezoidal abutment seat and the inner wall of the coal mine tunnel, and achieving a rapid emergency stop effect on the fall of the protection seat; and combined with the provided self-locking tooth block and the saw-shaped tooth plate, the reverse reset movement of the push plate can be automatically and constantly limited to ensure that the trapezoidal abutment seat only moves to one side of the inner wall of the coal mine tunnel during the upward movement, thereby achieving a high-efficiency anti-fall protection effect on the tunnel winch body after the rope is loosened; (2) After the protection seat of the present invention stops suddenly, the tunnel winch body carries the piston plate and continues to move downward inside the protection seat under the action of inertia. First, the downward inertial force of the tunnel winch body is buffered by multiple groups of buffer springs. Then, the air in the protection seat is pushed by the piston plate to be injected into the push plate and the trapezoidal abutment seat to compress the gas. On the one hand, secondary buffering is achieved to further eliminate the inertial force and improve the protection of personnel inside the tunnel winch body. On the other hand, it can drive the push plate to carry the trapezoidal abutment seat to squeeze the inner wall of the coal mine tunnel again, further strengthening the fixation of the protection seat after the emergency stop position; (3) The present invention utilizes the air exhausted from the protection seat to push a plurality of piston blocks carrying the reinforcement nails to move. By fixing the reinforcement nails on the inner wall of the coal mine tunnel, the emergency stop position of the protection seat can be fixed for a second time. In addition, during the movement of the fixing nails, the spiral guide groove, the locking groove and the guide pin can cooperate to automatically limit the reset movement of the reinforcement nails, thereby ensuring the effective reinforcement effect of the reinforcement nails on the protection seat. In combination with the damping air holes opened on the piston block, the speed of the piston plate rising and resetting can be reversely slowed down, thereby eliminating the secondary damage caused by the rapid rise of the piston plate to the personnel inside the tunnel winch body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings; Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the tunnel winch body of the present invention; Figure 3 It is a schematic diagram of the cooperation between the protection seat and the slack rope protection assembly of the present invention; Figure 4It is a structural schematic diagram of the protection seat of the present invention; Figure 5 It is a structural schematic diagram of the push plate of the present invention; Figure 6 It is a structural schematic diagram of the trapezoidal mounting seat of the present invention; Figure 7 It is a schematic diagram of the cooperation between the trapezoidal abutment seat and the damping reinforcement component of the present invention; Figure 8 It is a structural schematic diagram of the trapezoidal abutment seat of the present invention; Fig. 9 It is a structural schematic diagram of the damping reinforcement component of the present invention.

[0016] Legend: 1. Tunnel winch body; 11. Piston plate; 12. Buffer spring; 2. Protective seat; 21. Mounting slot 1; 22. Mounting slot 2; 23. Movable plate; 24. Sliding rod; 25. Horizontal plate; 26. Rotating rod; 27. Chain; 28. Sprocket; 29. ​​Tension spring; 210. Transmission gear; 211. Mounting slot 3; 212. Self-locking tooth block; 213. Reset spring 1; 214. Exhaust hole; 3. Slack rope protection assembly; 31. Push plate; 32. Trapezoidal mounting seat; 33. Trapezoidal abutment seat; 34. Transmission tooth plate; 35. Saw-shaped tooth plate; 36. Convex groove; 37. Convex block; 38. Diverter cavity; 39. Piston groove; 310. Communication groove; 311. Air inlet cavity; 312. Air inlet notch; 313. Connecting pipe; 314. Spiral guide groove; 315. Locking groove; 4. Damping reinforcement assembly; 41. Piston block; 42. Reinforcement nail; 43. Damping air hole; 44. Guide pin; 45. Return spring 2. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figure 1-Figure 8 As shown, in the prior art, the problem that the inertial fall of the tunnel winch body and the personnel inside cannot be effectively buffered during the short process of the tunnel winch body from rapid descent to slow descent, resulting in poor protection effect for the personnel inside the tunnel winch body, can be solved by the following solution: In the present embodiment, a coal mine tunnel winch with a loose rope protection mechanism comprises a tunnel winch body 1, a protection seat 2 is arranged below the tunnel winch body 1, and a piston plate 11 is slidably connected inside the protection seat 2, the tunnel winch body 1 is fixedly mounted on the top of the piston plate 11, a plurality of groups of buffer springs 12 distributed in a rectangular array are fixedly connected between the piston plate 11 and the protection seat 2, and a telescopic rod is fixedly connected between the piston plate 11 and the protection seat 2 and inside the corresponding buffer spring 12. By arranging a plurality of buffer springs 12, the protection seat 2 can effectively buffer the inertial falling of the tunnel winch body 1 and the personnel inside when it stops suddenly in a short time, thereby playing a buffering and protective effect on the personnel inside the tunnel winch body 1, and the plurality of telescopic rods are arranged to increase the sliding stability of the piston plate 11 in the protection seat 2; A loose rope protection assembly 3 is provided on the protection seat 2. The loose rope protection assembly 3 includes two sets of push plates 31, and a trapezoidal mounting seat 32 is fixedly connected to one side of the push plate 31, and a trapezoidal abutment seat 33 is slidably installed on the inclined surface of the trapezoidal mounting seat 32. When the protection seat 2 breaks the rope and falls, the two sets of push plates 31 move away from each other, so that the trapezoidal abutment seat 33 on the trapezoidal mounting seat 32 abuts against the inner wall of the coal mine tunnel; When one side of the trapezoidal abutment seat 33 contacts the inner wall of the coal mine tunnel, the trapezoidal abutment seat 33 is forced to move upward relative to the protection seat 2, and with the help of the inclined surface on the opposite side of the trapezoidal mounting seat 32 and the trapezoidal abutment seat 33, the distance between the trapezoidal mounting seat 32 and the side away from the trapezoidal abutment seat 33 is automatically increased, thereby increasing the abutment force between the trapezoidal abutment seat 33 and the inner wall of the coal mine tunnel, and achieving a rapid emergency stop effect on the fall of the protection seat 2; A damping reinforcement component 4 that cooperates with the piston plate 11 is arranged on the trapezoidal abutment seat 33. The damping reinforcement component 4 includes a piston block 41 and a reinforcement nail 42 that is rotatably connected to one side of the piston block 41. The reinforcement nail 42 is inserted into the inner wall of the coal mine tunnel, so that the emergency stop position of the protection seat 2 can be fixed secondary, thereby realizing the stable suspension of the protection seat 2 in the coal mine tunnel to wait for rescue.

[0019] The bottom of both sides of the protection seat 2 is symmetrically provided with mounting grooves 21, and the push plate 31 is slidably connected to the corresponding mounting grooves 21. A slide rail (not shown in the figure) slidably connected to the push plate 31 is fixedly installed inside the mounting groove 21 to increase the sliding stability of the push plate 31. The top of the mounting groove 21 is provided with a mounting groove 22, and the inside of the mounting groove 22 is slidably connected to a movable plate 23. Slide rods 24 slidably connected to the protection seat 2 are symmetrically welded on both sides of the top of the movable plate 23, and a cross plate 25 is fixedly connected between the tops of the slide rods 24, and a force rope is fixedly connected to the top of the cross plate 25; By connecting the force rope and the movable plate 23 through the sliding rod 24 and the cross plate 25, the friction force of the movable plate 23 during the downward movement after the force rope breaks can be reduced, thereby realizing the rapid operation of each transmission component and achieving the effect of quickly stopping the falling protection seat 2 and the tunnel winch body 1.

[0020] The top and bottom sides of the second installation groove 22 are both rotatably connected with a rotating rod 26, and a chain 27 is arranged between the rotating rods 26, and a sprocket 28 meshing with the chain 27 is fixedly connected to the rotating rod 26, and the movable plate 23 is fixedly connected to the chain 27 on one side of the sprocket 28, and a tension spring 29 is fixedly connected between the movable plate 23 and the bottom of the second installation groove 22; The cross-section of the second mounting groove 22 is an I-shaped structure, which not only realizes the rotating installation of the rotating rod 26, but also when the force rope is connected to the cross plate 25, the movable plate 23 makes large-area contact with the top of the second mounting groove 22, thereby realizing stable lifting of the protection seat 2 and the tunnel winch body 1. When the force rope on the cross plate 25 breaks, the movable plate 23 moves downward rapidly under the tensile force of the tension spring 29, and drives the rotating rod 26 to rotate with the cooperation of the chain 27 and the sprocket 28.

[0021] A transmission gear 210 is fixedly connected to the rotating rod 26 below the movable plate 23, and a transmission tooth plate 34 meshing with the corresponding transmission gear 210 is fixedly connected to the top of the push plate 31. During the rotation of the lower rotating rod 26, the meshing transmission gear 210 and the transmission tooth plate 34 drive the push plate 31 to move out of the mounting groove 21, thereby realizing the emergency stop operation of the protection seat 2; The inner walls of both sides of the mounting groove 21 are symmetrically provided with mounting grooves 3 211, and the interior of the mounting groove 3 211 is slidably connected with a self-locking tooth block 212, and a return spring 1 213 is fixedly connected between the self-locking tooth block 212 and the mounting groove 3 211, and the two sides of the push plate 31 are fixedly connected with saw-shaped tooth plates 35 that match the corresponding self-locking tooth blocks 212. When the push plate 31 is moved out, the self-locking tooth block 212 reciprocates under the cooperation of the saw-shaped tooth plates 35 and continuously compresses the return spring 1 213; The self-locking tooth block 212 under the compression of the reset spring 213 cooperates with the serrated tooth plate 35 to automatically and constantly limit the push plate 31 from returning to the installation groove 21, so as to ensure that the trapezoidal abutment seat 33 only moves toward one side of the inner wall of the coal mine tunnel during the upward movement, thereby achieving a high-efficiency anti-fall protection effect for the tunnel winch body 1 after the rope is loosened. One side of the self-locking tooth block 212 is fixedly connected to the inside of the reset spring 213 with a pull rod that is movable and penetrates the outside of the protection seat 2. By pulling the pull rod, the self-locking tooth block 212 is separated from the serrated tooth plate 35, thereby realizing the reset of the push plate 31, so as to facilitate the tunnel winch body 1 to play the role of loosening the rope again during subsequent use.

[0022] A plurality of convex grooves 36 are equidistantly provided on the inclined surface of the trapezoidal mounting seat 32 along its length direction, and a convex block 37 is fixedly connected to the trapezoidal abutment seat 33 and is slidably connected to the corresponding convex grooves 36. The convex grooves 36 and convex blocks 37 are provided to increase the sliding connection between the trapezoidal mounting seat 32 and the trapezoidal abutment seat 33. An anti-slip groove is provided on one side of the trapezoidal abutment seat 33 to increase the friction force after the trapezoidal abutment seat 33 contacts the inner wall of the coal mine tunnel, so that when the protective seat 2 descends, the trapezoidal abutment seat 33 moves upward relative to it, thereby achieving an emergency stop effect.

[0023] Example 2: Please refer to Figure 3 and Figure 5-Figure 9 As shown, the problem that the tunnel winch body is easily rebounded repeatedly by only using a buffer spring, thereby causing secondary injuries to personnel inside the tunnel winch body, can be solved by the following solutions: In this embodiment, a diversion chamber 38 is provided inside the trapezoidal abutment seat 33, and a plurality of piston grooves 39 distributed in a rectangular array are provided on the side of the diversion chamber 38 away from the trapezoidal mounting seat 32. The piston block 41 is slidably connected in the corresponding piston groove 39. A connecting groove 310 penetrating the trapezoidal abutment seat 33 is provided on one side of the piston groove 39. The reinforcement nail 42 is slidably connected to the connecting groove 310. After gas is injected into the diversion chamber 38, multiple piston blocks 41 are pushed to carry the corresponding reinforcement nails 42 to move, and the reinforcement nails 42 are nailed into the inner wall of the coal mine tunnel, which is used to further reinforce the fixation of the emergency stop position of the protection seat 2 and eliminate the inertial force exerted by the tunnel winch body 1 on the protection seat 2.

[0024] An exhaust hole 214 connected to the corresponding mounting groove 21 is provided at the bottom of the protection seat 2, an air intake cavity 311 is provided inside the push plate 31, and an air intake slot 312 is provided on one side of the air intake cavity 311. When the push plate 31 is moved out of the mounting groove 21, the air intake slot 312 is connected to the corresponding exhaust hole 214, so that after the protection seat 2 stops rapidly, the tunnel winch body 1 continues to move downward inside the protection seat 2 with the piston plate 11 under the action of inertia, and the downward inertial force of the tunnel winch body 1 is firstly buffered by the multiple groups of buffer springs 12 on the piston plate 11; As the piston plate 11 moves downward, the air in the protection seat 2 is pushed into the air inlet cavity 311 in the push plate 31 through the exhaust hole 214 and the air inlet notch 312. A sealing ring is embedded and installed on the top of the push plate 31, which is located outside the air inlet notch 312. The sealing ring (not shown in the figure) is slidably connected to the inner wall of the installation groove 1 21, so as to ensure that the air in the protection seat 2 can smoothly enter the air inlet cavity 311, and simultaneously prevent the outside air from entering the inside of the protection seat 2 from the position of the push plate 31 located at the air inlet notch 312, thereby increasing the sealing performance of the gas transmission channel. A connecting pipe 313 is fixedly connected between the air intake chamber 311 and the diversion chamber 38. The gas entering the air intake chamber 311 enters the diversion chamber 38 in the trapezoidal abutment seat 33 through the connecting pipe 313, and finally pushes the multiple piston blocks 41 carrying the reinforcement nails 42 to move, and with the help of the compression and discharge process of the gas, the pushing plate 31 carrying the trapezoidal abutment seat 33 is driven again to squeeze the inner wall of the coal mine tunnel, further strengthening the fixation of the protection seat 2 after the emergency stop position, and promoting the flow and compression of the air in the protection seat 2 through the piston plate 11, The inertial force of the tunnel winch body 1 is buffered for a secondary period of time, and the protection effect of the personnel inside the tunnel winch body 1 is further improved.

[0025] A spiral guide groove 314 is symmetrically provided on the inner wall of the connecting groove 310, and a locking groove 315 is provided on the side of the spiral guide groove 314 away from the piston groove 39. The angle formed between the locking groove 315 on one side of the spiral guide groove 314 and the side wall of the spiral guide groove 314 is an acute angle. The guide pin 44 is guided by the spiral guide groove 314 to smoothly enter the locking groove 315, thereby limiting the retreat of the reinforcement nail 42.

[0026] A plurality of damping air holes 43 are formed through the piston block 41, a guide pin 44 matching the corresponding spiral guide groove 314 is fixedly connected to the reinforcement nail 42, and a second return spring 45 is fixedly connected between the piston block 41 and the piston groove 39. When the piston block 41 pushes the reinforcement nail 42 to move in the connecting groove 310, the guide pin 44 on the reinforcement nail 42 slides in the corresponding spiral guide groove 314, and is guided by the spiral guide groove 314 and cooperates with the compressive force of the second return spring 45, so that the guide pin 44 stays in the locking groove 315, thereby limiting the reset movement of the reinforcement nail 42 and ensuring the secondary reinforcement effect of the reinforcement nail 42 on the protection seat 2; After the piston plate 11 moves to the lowest point under the action of inertia and completes the secondary reinforcement of the protection seat 2, the piston plate 11 is pushed to reset and rise under the compression of the buffer spring 12. During this process, the air in the diverter chamber 38 is extracted through the exhaust hole 214, the air inlet slot 312, the air inlet chamber 311 and the connecting pipe 313 in turn, so that a negative pressure environment is formed inside the diverter chamber 38. The diverter chamber 38 under negative pressure slowly extracts external air through the damping air hole 43 on the piston plate 11, thereby prompting the piston plate 11 to slowly reset and eliminate the secondary damage to the personnel inside the tunnel winch body 1 caused by the rapid rise of the piston plate 11.

[0027] Example 3: Please refer to Figure 1-Figure 9 As shown, the present invention also provides a method for using a coal mine tunnel winch with a loose rope protection mechanism, comprising the following steps: Step 1: When the force rope on the horizontal plate 25 breaks, the movable plate 23 moves downward rapidly under the tensile force of the tension spring 29, and the movable plate 23 drives the chain 27 to rotate, prompting the transmission gear 210 to rotate. The transmission gear 210 drives the push plate 31 to move out of the installation groove 21 through the meshing transmission tooth plate 34, so that the trapezoidal abutment seat 33 on the trapezoidal mounting seat 32 abuts against the inner wall of the coal mine tunnel, and at the same time, the air inlet notch 312 is connected with the corresponding exhaust hole 214; Step 2: During the process of moving the push plate 31 out, the self-locking tooth block 212 reciprocates with the cooperation of the serrated tooth plate 35 and continuously compresses the return spring 1 213. When one side of the trapezoidal abutment seat 33 located in the anti-slip groove contacts the inner wall of the coal mine tunnel, the trapezoidal abutment seat 33 is forced to move upward relative to the protection seat 2. With the help of the inclined surfaces on the opposite sides of the trapezoidal mounting seat 32 and the trapezoidal abutment seat 33, the distance between the trapezoidal mounting seat 32 and the trapezoidal abutment seat 33 away from each other is increased. In combination with the self-locking tooth block 212 under the compression of the return spring 1 213 and the serrated tooth plate 35, the push plate 31 is automatically and constantly restricted from returning to the mounting groove 1 21, thereby increasing the abutment force between the trapezoidal abutment seat 33 and the inner wall of the coal mine tunnel, and quickly stopping the protection seat 2 from falling. Step 3: After the protection seat 2 stops suddenly, the tunnel winch body 1 carries the piston plate 11 to continue to move downward inside the protection seat 2 under the action of inertia. First, the downward inertial force of the tunnel winch body 1 is buffered by the multiple groups of buffer springs 12 on the piston plate 11. During the downward movement of the piston plate 11, the air in the protection seat 2 is pushed into the air intake chamber 311 in the push plate 31 through the exhaust hole 214 and the air intake slot 312, and then enters the diversion chamber 38 in the trapezoidal abutment seat 33 through the connecting pipe 313, and finally pushes the multiple piston blocks 41 to carry the reinforcement nails 42 to move, and nail the reinforcement nails 42 into the inner wall of the coal mine tunnel, so as to further strengthen the fixing of the emergency stop position of the protection seat 2 and eliminate the inertial force of the tunnel winch body 1. At the same time, combined with the piston plate 11 to push the flow and compression of the air in the protection seat 2, the inertial force of the tunnel winch body 1 is buffered at the second level, thereby improving the protection effect of the personnel inside the tunnel winch body 1; Step 4: When the piston block 41 pushes the reinforcing nail 42 to move in the connecting groove 310, the guide pin 44 on the reinforcing nail 42 slides in the corresponding spiral guide groove 314, and then enters the corresponding locking groove 315, and the inclined surface on one side of the locking groove 315 cooperates with the compressive force of the second reset spring 45, so that the guide pin 44 stays in the locking groove 315, and the reset movement of the reinforcing nail 42 is restricted, ensuring the secondary reinforcement effect of the reinforcing nail 42 on the protective seat 2; Step 5: When the piston plate 11 returns to its original position and moves upward under the compression of the buffer spring 12, the air in the diverter chamber 38 is extracted through the exhaust hole 214, the air inlet slot 312, the air inlet chamber 311 and the connecting pipe 313 in sequence, so that a negative pressure environment is formed inside the diverter chamber 38. The diverter chamber 38 under negative pressure slowly extracts external air through the damping air hole 43 on the piston plate 11, thereby causing the piston plate 11 to slowly return to its original position, thereby eliminating the secondary damage to the personnel inside the tunnel winch body 1 caused by the rapid rise of the piston plate 11.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coal mine roadway winch with a loose rope protection mechanism, comprising a roadway winch body (1), characterized in that: A protection seat (2) is provided below the tunnel winch body (1), and a piston plate (11) is slidably connected inside the protection seat (2); the tunnel winch body (1) is fixedly mounted on the top of the piston plate (11); a plurality of groups of buffer springs (12) distributed in a rectangular array are fixedly connected between the piston plate (11) and the protection seat (2); and a telescopic rod is fixedly connected between the piston plate (11) and the protection seat (2) and located inside a corresponding buffer spring (12); A loose rope protection assembly (3) is provided on the protection seat (2), and the loose rope protection assembly (3) comprises two sets of push plates (31), one side of the push plate (31) is fixedly connected to a trapezoidal mounting seat (32), and a trapezoidal abutment seat (33) is slidably mounted on an inclined surface of the trapezoidal mounting seat (32); The trapezoidal abutment seat (33) is provided with a damping type reinforcement component (4) that matches the piston plate (11), and the damping type reinforcement component (4) comprises a piston block (41) and a reinforcement nail (42) rotatably connected to one side of the piston block (41).

2. A coal mine tunnel winch with a loose rope protection mechanism according to claim 1, characterized in that: The bottom of both sides of the protection seat (2) are symmetrically provided with mounting grooves (21), the push plate (31) is slidably connected to the corresponding mounting grooves (21), the top of the mounting groove (21) is provided with mounting grooves (22), and the inside of the mounting grooves (22) is slidably connected with a movable plate (23), the top of the movable plate (23) is symmetrically welded with sliding rods (24) slidably connected to the protection seat (2), and the tops of the sliding rods (24) are fixedly connected with a transverse plate (25), and the top of the transverse plate (25) is fixedly connected with a force rope.

3. A coal mine tunnel winch with a loose rope protection mechanism according to claim 2, characterized in that: The top and bottom sides of the second installation groove (22) are both rotatably connected to a rotating rod (26), and a chain (27) is arranged between the rotating rods (26). A sprocket (28) meshing with the chain (27) is fixedly connected to the rotating rod (26). The movable plate (23) is fixedly connected to the chain (27) on one side of the sprocket (28). A tension spring (29) is fixedly connected between the movable plate (23) and the bottom of the second installation groove (22).

4. A coal mine tunnel winch with a loose rope protection mechanism according to claim 3, characterized in that: A transmission gear (210) is fixedly connected to the rotating rod (26) below the movable plate (23), a transmission tooth plate (34) meshing with the corresponding transmission gear (210) is fixedly connected to the top of the push plate (31), and mounting grooves (211) are symmetrically provided on the inner walls of both sides of the mounting groove (21), a self-locking tooth block (212) is slidably connected inside the mounting groove (211), and a return spring (213) is fixedly connected between the self-locking tooth block (212) and the mounting groove (211), and saw-shaped tooth plates (35) matching the corresponding self-locking tooth blocks (212) are fixedly connected to both sides of the push plate (31).

5. A coal mine tunnel winch with a loose rope protection mechanism according to claim 1, characterized in that: A plurality of convex grooves (36) are equidistantly provided on the inclined surface of the trapezoidal mounting seat (32) along its length direction, a convex block (37) slidably connected to the corresponding convex grooves (36) is fixedly connected to the trapezoidal abutment seat (33), and an anti-slip groove is provided on one side of the trapezoidal abutment seat (33).

6. A coal mine tunnel winch with a loose rope protection mechanism according to claim 5, characterized in that: A flow diversion chamber (38) is provided inside the trapezoidal abutment seat (33), and a plurality of piston grooves (39) distributed in a rectangular array are provided on a side of the flow diversion chamber (38) away from the trapezoidal mounting seat (32), the piston block (41) is slidably connected in the corresponding piston groove (39), a connecting groove (310) penetrating the trapezoidal abutment seat (33) is provided on one side of the piston groove (39), and the reinforcing nail (42) is slidably connected to the connecting groove (310).

7. A coal mine tunnel winch with a loose rope protection mechanism according to claim 6, characterized in that: The bottom of the protection seat (2) is provided with an exhaust hole (214) which is connected to the corresponding mounting groove 1 (21); the push plate (31) is provided with an air intake cavity (311) inside, and an air intake slot (312) is provided at the top of one side of the air intake cavity (311); a sealing ring is embedded and installed at the top of the push plate (31) outside the air intake slot (312); and a connecting pipe (313) is fixedly connected between the air intake cavity (311) and the diversion cavity (38).

8. A coal mine tunnel winch with a loose rope protection mechanism according to claim 6, characterized in that: A spiral guide groove (314) is symmetrically provided on the inner side wall of the communication groove (310), and a locking groove (315) is provided on the side of the spiral guide groove (314) away from the piston groove (39).

9. A coal mine tunnel winch with a loose rope protection mechanism according to claim 8, characterized in that: The piston block (41) is provided with a plurality of damping air holes (43) extending therethrough, a guide pin (44) adapted to the corresponding spiral guide groove (314) is fixedly connected to the reinforcing nail (42), and a second return spring (45) is fixedly connected between the piston block (41) and the piston groove (39).

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