Mine underground operation safety protection device

Abstract

The invention discloses a mine underground operation safety protection device, which relates to the technical field of mine exploitation, and comprises a shielding unit used for shielding the body of a person walking in an underground roadway and preventing the person from being injured by falling rocks at the top of the underground roadway; the shielding unit can be worn on the body of a person through the wearing unit, the whole shielding unit is driven to move through movement of the person, and the weight of the shielding unit is borne by the ground; and the automatic unbinding unit is used for automatically unbinding the wearing unit and the personnel when a large-scale rockfall falls, so that convenience is provided for the personnel to abandon the shielding unit to escape. The protection device can effectively prevent rocks in a mine roadway from falling off and injuring people, is good in safety protection effect, can be automatically unbound, and is convenient for people to escape from the scene at the first time.

Description

Technical Field

[0001] The invention relates to the technical field of mining, and in particular to a safety protection device for underground mine operations. Background Art

[0002] Mining refers to the process of extracting valuable mineral resources from the earth's crust through specific technologies and methods. These mineral resources include but are not limited to metal ores, non-metallic ores, energy minerals, etc., which are widely used in construction, industry, transportation, energy and other fields. Mining is divided into open-air mining and underground mining.

[0003] For existing underground mining, personnel usually wear protective clothing when walking or performing maintenance work in the mine tunnels to minimize the damage to the workers caused by falling rocks from the top of the tunnels. In actual use, falling rocks hitting the protective clothing will also cause certain impact injuries to the workers, and the safety protection effect on the workers is not good, especially for tunnels without support structures, where larger rocks or larger areas of rock layers are prone to falling from the top of the tunnels. At this time, the protective effect of wearing protective clothing is particularly poor. Therefore, the present application provides a safety protection device for underground mine operations to meet the needs. Summary of the invention

[0004] The purpose of the present application is to provide a safety protection device for underground mine operations, which is used to solve the technical problem that existing workers have poor protection against falling rocks when working in tunnels.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: A safety protection device for underground mine operations, comprising a shielding unit: used to shield the body of a person walking in an underground tunnel to prevent falling rocks from the top of the underground tunnel from injuring the person; Wearable unit: the shielding unit can be worn on a person's body through the wearable unit, and the entire shielding unit can be driven to move by the movement of the person, wherein the weight of the shielding unit is borne by the ground; Automatic unbinding unit: When there is a large-scale rockfall, the wearable unit and the personnel are automatically untied, making it convenient for the personnel to abandon the shielding unit and escape.

[0006] As a preferred implementation in this embodiment, the shielding unit includes a U-shaped moving frame and an impact plate with a material guiding slope; The impact plate is arranged above the U-shaped moving frame, and both lower ends of the impact plate are connected to the mounting plates on the corresponding side walls of the U-shaped moving frame through a plurality of buffer springs; The wearable unit comprises two vertical plates, two U-shaped rods and two sliders, the two vertical plates are respectively arranged on the two inner side walls of the U-shaped movable frame, the two sliders are respectively slidably connected to the corresponding vertical plates, and the two sliders are movably connected to the corresponding U-shaped rods through connecting rods; The connecting rod comprises two connecting heads which are rotatably connected to the slider and the U-shaped rod respectively, a limiting rod which slides through the other connecting head is fixed on the connecting head close to the U-shaped rod, the two connecting heads are connected by a connecting spring, and telescopic tubes are provided through the two connecting heads on the left side, and the air outlet end of the telescopic tube is connected to the U-shaped air pipe provided in the U-shaped rod on the left side; The inner cavity of the U-shaped rod on the left side is provided with a transmission gear, a first gear rod, a second gear rod and a movable block; The left end of the first gear rod is slidingly sealed and arranged in the inner cavity of the U-shaped air pipe, the first gear rod is gear-connected with the second gear rod through the transmission gear, a limit plate is installed on the right end of the second gear rod, and the limit plate is slidably arranged in the inner cavity of the movable block, a second positioning block is installed on the upper end of the second gear rod through a second spring, and an inclined surface is arranged on the left side of the second positioning block, and both ends of the U-shaped rod on the right side are provided with positioning grooves adapted to the movable block; The inner cavity of the movable block is connected to the first positioning block through a first spring, and an inclined surface is provided on the right side of the first positioning block, and the lower end of the first positioning block is connected to the limiting plate through a pull rope; The two U-shaped rods are each provided with a through hole, and the inner cavities of the two through holes are each movably provided with a pressing column, and the pressing column is connected to the inner wall of the through hole via a pressing spring; The automatic untying unit comprises a weight, two driving rods, two baffles and a cylinder, wherein the weight is arranged in a through cavity provided on the mounting plate, two baffles are provided, both of which are rotatably arranged on the mounting plate through bearings, and the two baffles are both located below the weight; The upper ends of the two driving rods are fixedly connected to the lower ends of the impact plates, and the lower ends of the two driving rods slide through the mounting plate and the corresponding baffle plates. The driving rods are provided with arc grooves, and the upper and lower ends of the arc grooves are connected with the linear grooves. The inner cavity of the baffle plate is provided with a sliding column whose end is located in the linear groove. The cylinder is arranged directly below the weight, the inner cavity of the cylinder is slidingly sealed with a hollow cylinder, and the hollow cylinder is connected to the top of the inner cavity of the cylinder through a lifting spring, the air outlet at the bottom of the cylinder is connected to the air inlet of the telescopic tube through a hose, and the U-shaped movable frame is provided with a through opening adapted to the hose.

[0007] As a preferred implementation manner in this embodiment, it also includes a magnetic assisting unit, one end of which is arranged on the weight, and the other end is arranged on the hollow cylinder. While reducing the weight of the weight, it can also stably complete the untying and separation of the two U-shaped rods.

[0008] As a preferred implementation manner in this embodiment, the magnetic assist unit includes a first permanent magnet and a second permanent magnet arranged opposite to each other, the first permanent magnet is arranged in a groove arranged at the bottom of the weight, and the second permanent magnet is arranged in a groove arranged at the upper end of the hollow cylinder, and the relative end magnetic poles of the first permanent magnet and the second permanent magnet are opposite.

[0009] As a preferred implementation manner in this embodiment, it also includes a magnetic isolation unit, which is arranged in the inner cavity of the weight and is used to block the magnetic force between the first permanent magnet and the second permanent magnet to facilitate the resetting of the weight.

[0010] As a preferred implementation manner in this embodiment, the magnetic isolation unit includes two magnetic isolation plates slidably arranged in the inner cavity of the weight, one end of the two magnetic isolation plates are rotatably connected to the lower ends of the corresponding force-bearing rods, the upper ends of the two force-bearing rods are rotatably connected to the lower end of the pull ring passing through the weight, and the lower end of the pull ring is connected to the weight through a tension spring.

[0011] As a preferred implementation in this embodiment, three L-shaped plates are provided on the outer wall of the cylinder at the left, right and front positions.

[0012] As a preferred implementation manner in this embodiment, a protrusion is arranged in the middle of the mounting plate.

[0013] In summary, the technical effects and advantages of the present invention are as follows: The invention has a reasonable structure, and the protective device can effectively prevent rocks from falling and injuring people in mine tunnels, has a good safety protection effect, and can be automatically untied, so that people can escape from the scene in the first time. In the present invention, a magnetic assist unit is provided to ensure that the required impact strength is formed on the hollow cylinder while reducing the weight of the heavy object. The reduction of the weight of the heavy object further reduces the load when personnel move the U-shaped mobile frame, thereby reducing the labor intensity of personnel moving the U-shaped mobile frame. In the present invention, a magnetic isolation unit is provided to isolate the magnetism between the first permanent magnet and the second permanent magnet, thereby facilitating the separation of the heavy object from the hollow cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure of the wearable unit; Figure 3 for Figure 1 A partial upward structural diagram of the middle U-shaped mobile frame; Figure 4 for Figure 1 Schematic diagram of the partial cross-section structure of the middle U-shaped rod; Figure 5 for Figure 4 The enlarged structural diagram at A in the middle; Figure 6 for Figure 3 A schematic diagram of the partial cross-sectional structure of the middle baffle and the driving rod; Figure 7 for Figure 3 Schematic diagram of the cross-section structure of the medium weight and cylinder.

[0016] In the figure: 1, U-shaped moving frame; 2, impact plate; 3, buffer spring; 4, mounting plate; 5, vertical plate; 6, slider; 7, connector; 8, U-shaped rod; 9, connecting spring; 10, telescopic tube; 11, cylinder; 12, lifting spring; 13, hollow cylinder; 14, baffle; 15, weight; 16, driving rod; 17, linear groove; 18, arc groove; 19, sliding column; 20, U-shaped air pipe; 21, first gear rod; 22, Transmission gear; 23, second gear rod; 24, first positioning block; 25, first spring; 26, movable block; 27, pull rope; 28, limit plate; 29, second positioning block; 30, second spring; 31, pressing column; 32, pressing spring; 33, first permanent magnet; 34, second permanent magnet; 35, magnetic isolation plate; 36, force rod; 37, tension spring; 38, pull ring; 39, limit rod; 40, L-shaped plate; 41, bearing. 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] A safety protection device for underground mine operations, comprising a shielding unit: used to shield the body of a person walking in an underground tunnel to prevent the person from being injured by falling rocks from the top of the underground tunnel; Wearable unit: the shielding unit can be worn on a person's body through the wearable unit, and the entire shielding unit can be driven to move by the movement of the person, wherein the weight of the shielding unit is borne by the ground; Automatic unbinding unit: When there is a large-scale rockfall, the wearable unit and the personnel are automatically untied, making it convenient for the personnel to abandon the shielding unit and escape.

[0019] As a preferred implementation in this embodiment, Figure 1-7 As shown, the shielding unit includes a U-shaped moving frame 1 and an impact plate 2 with a material guiding slope; The impact plate 2 is arranged above the U-shaped moving frame 1, and both lower ends of the impact plate 2 are connected to the mounting plates 4 on the corresponding side walls of the U-shaped moving frame 1 through a plurality of buffer springs 3; The wearing unit includes two vertical plates 5, two U-shaped rods 8 and two sliders 6. The two vertical plates 5 are respectively arranged on the two inner side walls of the U-shaped mobile frame 1. The two sliders 6 are respectively slidably connected to the corresponding vertical plates 5. The two sliders 6 are movably connected to the corresponding U-shaped rods 8 through connecting rods. The connecting rod includes two connecting heads 7 which are rotatably connected to the slider 6 and the U-shaped rod 8 respectively. A limiting rod 39 which slides through the other connecting head 7 is fixed on the connecting head 7 close to the U-shaped rod 8. The two connecting heads 7 are connected by a connecting spring 9. Telescopic tubes 10 are provided through the two connecting heads 7 on the left side, and the air outlet end of the telescopic tube 10 is connected to a U-shaped air pipe 20 provided in the left U-shaped rod 8. The inner cavity of the left U-shaped rod 8 is provided with a transmission gear 22, a first gear rod 21, a second gear rod 23 and a movable block 26; The left end of the first gear rod 21 is slidingly sealed and arranged in the inner cavity of the U-shaped air pipe 20. The first gear rod 21 is gear-connected with the second gear rod 23 through the transmission gear 22. A limit plate 28 is installed on the right end of the second gear rod 23. The limit plate 28 is slidably arranged in the inner cavity of the movable block 26. The upper end of the second gear rod 23 is installed with a second positioning block 29 through a second spring 30, and the left side of the second positioning block 29 is provided with an inclined surface. Both ends of the right U-shaped rod 8 are provided with positioning grooves adapted to the movable block 26. The inner cavity of the movable block 26 is connected to the first positioning block 24 through the first spring 25, and an inclined surface is provided on the right side of the first positioning block 24. The lower end of the first positioning block 24 is connected to the limiting plate 28 through a pull rope 27; Through holes are provided on the two U-shaped rods 8, and the inner cavities of the two through holes are movably provided with pressing columns 31, and the pressing columns 31 are connected to the inner walls of the through holes through pressing springs 32; The automatic untying unit includes a weight 15, two driving rods 16, two baffles 14 and a cylinder 11. The weight 15 is arranged in a through cavity provided on the mounting plate 4. Two baffles 14 are provided, both of which are rotatably arranged on the mounting plate 4 through bearings 41. Both baffles 14 are located below the weight 15. The upper ends of the two driving rods 16 are fixedly connected to the lower end of the impact plate 2, and the lower ends of the two driving rods 16 slide through the mounting plate 4 and the corresponding baffle 14. The driving rods 16 are provided with arc grooves 18, and the upper and lower ends of the arc grooves 18 are connected with the linear grooves 17. The inner cavity of the baffle 14 is provided with a sliding column 19 whose end is located in the linear groove 17. The cylinder 11 is arranged directly below the weight 15, and the inner cavity of the cylinder 11 is slidingly sealed with a hollow cylinder 13, and the hollow cylinder 13 is connected to the top of the inner cavity of the cylinder 11 through a lifting spring 12, and the air outlet at the bottom of the cylinder 11 is connected to the air inlet of the telescopic tube 10 through a hose, and the U-shaped movable frame 1 is provided with a through opening adapted to the hose.

[0020] When in use, the staff can pull the two U-shaped rods 8 to increase the distance between the two connectors 7, and then put the two U-shaped rods 8 on the waist, align the two ends of the U-shaped rod 8, so that the two movable blocks 26 of the left U-shaped rod 8 are respectively plugged into the positioning grooves set at the ends of the right U-shaped rod 8 (in the plugging process, the movable block 26 will not move toward the inner cavity of the U-shaped rod 8 due to the air pressure in the U-shaped air pipe 20, so that the movable block 26 and the positioning groove are plugged and positioned, and the first positioning block 24 and the through hole are plugged and positioned). Figure 4 and Figure 5 As shown, the first positioning block 24 is located in the through hole, the two U-shaped rods 8 are fixed together, and the whole formed by the two U-shaped rods 8 is sleeved on the body of the worker, and at this time the worker is located in the U-shaped cavity of the U-shaped moving frame 1. When the worker moves, it will drive the entire U-shaped moving frame 1 to move. When a rock falls from above, it will collide with the impact plate 2 and move along the guide slope on the impact plate 2, and finally fall to both sides of the U-shaped moving frame 1. The buffer spring 3 is set to buffer the impact of the falling rock on the impact plate 2 and reduce the damage to the impact plate 2. An automatic unbinding unit is provided. When a larger slate layer falls onto the impact plate 2 (i.e. there is a risk of collapse at the top of the tunnel), the impact plate 2 will move downward rapidly. When it drops to a certain height, the sliding column 19 will move into the arc groove 18 and move along the arc groove 18, and finally move into the straight groove 17 provided above. During this process, the driving rod 16 will drive the baffle plate 14 to rotate and move away from directly below the weight 15. At this time, the weight 15 moves downward by its own gravity and makes the upper end of the hollow cylinder 13 contact, so that the hollow cylinder 13 squeezes and lifts the spring 12 to move downward, compressing the gas in the U-shaped air pipe 20, thereby pushing out the two first gear rods 21 at the same time and moving outward. The outward movement of the first gear rod 21 cooperates with the transmission of the transmission gear 22, which can make the second gear rod 23 move toward the inner cavity of the left U-shaped rod 8, that is, the second gear rod 23 moves to the left. The second toothed rod 23 continues to move to the left, which will drive the movable block 26 to move toward the inner cavity of the left U-shaped rod 8, and finally make the second positioning block 29 and the through hole on the left U-shaped rod 8 form a plug-in positioning. At this time, through the action of the connecting spring 9, the two U-shaped rods 8 move outward and separate from the human body (without hindering the movement of personnel). At this time, the personnel can directly abandon the U-shaped movable frame 1 to escape according to the situation (to avoid serious injuries caused by secondary falling), which buys time for the escape of the personnel (manually releasing the fixation of the two U-shaped rods 8 requires a certain amount of time, and it is easy to make mistakes in a hurry, so that the personnel cannot escape from the scene in the first time, increasing the risk of personnel). When it is impossible to escape, the U-shaped movable frame 1 can also be used as an emergency shelter for miners. The safety protection device has a good protection effect.

[0021] It should be noted that: first, the hollow cylinder 13 is squeezed by the action of the weight 15 and the impact force brought by the acceleration, thereby driving the first gear rod 21 to move outward. The impact strength of the weight 15 and the height of the hollow cylinder 13 can be controlled to control the impact strength of the weight 15 and the hollow cylinder 13, so that the impact strength and the speed of the impact are controllable, and the elastic parts at the connection between the hollow cylinder 13 and the cylinder body 11 and the U-shaped air pipe 20 and the first gear rod 21 will not be damaged due to excessive impact strength (fast friction or instantaneous excessive force will cause irreversible deformation), reduce air tightness or seal failure and fail to release the fixation between the two U-shaped rods 8. If Directly using the falling impact plate 2 to act on the hollow cylinder 13 (since the amount of ore falling onto the impact plate 2 cannot be determined, if excessive ore falls), it is easy to cause the instantaneous impact strength to be too large, which is easy to lead to reduced airtightness or sealing failure; secondly, after no rockfall occurs, the pressing column 31 on the right U-shaped rod 8 can be directly squeezed to make the first positioning block 24 move downward and out of the through hole, and the two U-shaped rods 8 can be pulled outward to separate the two. When a rockfall occurs and the automatic untying unit is activated, at this time, the weight 15 is restored to its original position and the baffle 14 blocks the lower end of the weight 15, and then the left U-shaped rod 8 is pressed. The pressing column 31 of the lifting spring 12 causes the second positioning block 29 to move out of the through hole. At this time, the first gear rod 21 moves toward the inner cavity of the U-shaped trachea 20 through the elastic force of the lifting spring 12, and finally causes the end of the movable block 26 with the first positioning block 24 to move out of the inner cavity of the U-shaped rod 8 and return to its original position; third, the setting of the connecting spring 9, after the fixation between the two U-shaped rods 8 is automatically released, the two U-shaped rods 8 can be moved outward through the action of the connecting spring 9, and finally move to both sides of the personnel, providing a sufficiently large unobstructed space for the personnel to escape, which is conducive to the personnel to escape from the scene as soon as possible; fourth, the slider 6 can slide on the vertical plate 5, so that different People of all heights can put the U-shaped rod 8 on their waists; Fourth, an elastic sealing sleeve is provided on the left end of the first gear rod 21 and the outer wall of the lower end of the hollow cylinder 13 for sealing; Fifth, for the automatic untying unit, after the first positioning block 24 is unplugged from the through hole, it will drive the movable block 26 to move toward the inner cavity of the left U-shaped rod 8, so as to avoid the unpositioned movable block 26 being left in the positioning groove of the right U-shaped rod 8, which will cause the separation of the two U-shaped rods 8 to be blocked (the two U-shaped rods 8 are separated by the elastic force of the connecting spring 9), which is conducive to the smooth separation of the two U-shaped rods 8, avoids the extension of the separation time, and further gains valuable time for the personnel;Sixth, during the whole process of the automatic unbinding unit operation, the upper end of the weight 15 is always located in the through cavity of the mounting plate 4. After the automatic unbinding unit operation is completed and the rocks on the upper end of the impact plate 2 are guided away or manually cleaned, the baffle 14 is in conflict with the outer wall of the weight 15 through the elastic force of the buffer spring 3. At this time, the personnel drive the weight 15 to rise through the pull ring 38. When the lower end of the weight 15 moves into the through cavity, the impact plate 2 will be restored to its original position through the elastic force of the buffer spring 3. At the same time, the baffle 14 will move to the right below the weight 15 to support it. At this time, the pull ring 38 can be released, making the reset operation of each part more convenient and quick; Seventh, several groups of reinforcing rods can be arranged horizontally in the U-shaped cavity of the U-shaped moving frame 1, and the two ends of the reinforcing rods are respectively fixedly connected to the two inner side walls of the U-shaped moving frame 1, in order to increase the structural strength of the U-shaped moving frame 1. ;

[0022] As a preferred implementation in this embodiment, it also includes a magnetic assist unit, one end of which is arranged on the weight 15, and the other end is arranged on the hollow cylinder 13. While reducing the weight of the weight 15, it can also stably complete the untying and separation of the two U-shaped rods 8.

[0023] The magnetic assist unit is provided to ensure that the required impact strength is formed on the hollow tube 13 (i.e., the operation of the automatic untying unit is not delayed) while reducing the weight of the heavy object 15. The reduction in the weight of the heavy object 15 reduces the load on personnel when moving the U-shaped mobile frame 1, thereby reducing the labor intensity of personnel moving the U-shaped mobile frame 1.

[0024] As a preferred implementation in this embodiment, Figure 3 and Figure 7 As shown, the magnetic assist unit includes a first permanent magnet 33 and a second permanent magnet 34 that are arranged opposite to each other. The first permanent magnet 33 is arranged in a groove arranged at the bottom of the weight 15, and the second permanent magnet 34 is arranged in a groove arranged at the upper end of the hollow cylinder 13. The magnetic poles of the opposite ends of the first permanent magnet 33 and the second permanent magnet 34 are opposite.

[0025] When the unweighted weight 15 moves downward, the magnetic force of the first permanent magnet 33 and the second permanent magnet 34 accelerates the downwardly moving weight 15, and finally the weight 15 drives the hollow tube 13 to move downward, and the two U-shaped rods 8 are released and separated.

[0026] It should be noted that the hollow tube 13 is made of magnetic isolation material to prevent the magnetism of the permanent magnet from affecting the lifting spring 12; secondly, the weight reduced by the weight 15 is greater than the sum of the first permanent magnet 33 and the second permanent magnet 34.

[0027] As a preferred implementation manner in this embodiment, it also includes a magnetic isolation unit, which is arranged in the inner cavity of the weight 15 to block the magnetic force between the first permanent magnet 33 and the second permanent magnet 34 to facilitate the resetting of the weight 15.

[0028] After the automatic untying unit is started, the lower end of the weight 15 and the upper end of the hollow tube 13 will be fixed together magnetically. In order to facilitate the separation of the two, a magnetic isolation unit is set. When the two are separated, the magnetic field between the two can be isolated first, and the magnetic force can be released or reduced, which is conducive to the separation of the two.

[0029] As a preferred implementation in this embodiment, Figure 7 As shown, the magnetic isolation unit includes two magnetic isolation plates 35 slidably arranged in the inner cavity of the weight 15, one end of the two magnetic isolation plates 35 is rotatably connected to the lower end of the corresponding force-bearing rod 36, the upper ends of the two force-bearing rods 36 are rotatably connected to the lower end of the pull ring 38 passing through the weight 15, and the lower end of the pull ring 38 is connected to the weight 15 through a tension spring 37.

[0030] When it is necessary to separate the heavy object 15 from the hollow tube 13, the pull ring 38 can be directly pulled. The pull ring 38 moves upward and drives the lower ends of the two force-bearing rods 36 to move together, so that the two magnetic isolation plates 35 move outward at the same time to block the first permanent magnet 33. After the first permanent magnet 33 is completely blocked, the heavy object 15 can be directly lifted up by the pull ring 38. After the heavy object 15 is placed in its original position, the pull ring 38 is released, and the elastic force of the tension spring 37 is used to restore the two magnetic isolation plates 35 to their original positions, thereby releasing the blocking of the first permanent magnet 33.

[0031] It should be noted that the weight 15 is made of magnetic isolation material to prevent the permanent magnet from causing magnetic field interference to the components inside the weight 15, which is conducive to the stable and orderly operation of the internal components.

[0032] As a preferred implementation in this embodiment, three L-shaped plates 40 are provided on the outer wall of the cylinder 11 at the left, right and front positions.

[0033] The three L-shaped plates 40 and the side wall of the U-shaped moving frame 1 form a limiting cavity to limit the weight 15 and prevent it from escaping from the U-shaped moving frame 1 .

[0034] As a preferred implementation in this embodiment, the middle part of the mounting plate 4 is provided with a protrusion.

[0035] The buffer spring 3 is arranged in a low-lying part of the mounting plate 4. When the impact plate 2 carries a large weight, in order to prevent the buffer spring 3 from being over-compressed and damaged, the impact plate 2 will directly contact the raised part of the mounting plate 4 to support the impact plate 2, thereby effectively protecting the buffer spring 3.

[0036] It should be noted that before the impact plate 2 comes into contact with the mounting plate 4, its automatic unbinding unit has been activated.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety protection device for underground mine operations, Features: It includes a shielding unit: used to shield the body of people walking in the underground tunnel to prevent people from being injured by falling rocks from the top of the underground tunnel; Wearable unit: the shielding unit can be worn on a person's body through the wearable unit, and the entire shielding unit can be driven to move by the movement of the person, wherein the weight of the shielding unit is borne by the ground; Automatic unbinding unit: When there is a large-scale rockfall, the wearable unit and the personnel are automatically untied, making it convenient for the personnel to abandon the shielding unit and escape.

2. A safety protection device for underground mine operations according to claim 1, Features: The shielding unit comprises a U-shaped moving frame (1) and an impact plate (2) with a material guiding inclined surface; The impact plate (2) is arranged above the U-shaped moving frame (1), and both lower ends of the impact plate (2) are connected to the mounting plates (4) on the corresponding side walls of the U-shaped moving frame (1) via a plurality of buffer springs (3); The wearable unit comprises two vertical plates (5), two U-shaped rods (8) and two sliders (6); the two vertical plates (5) are respectively arranged on two inner side walls of the U-shaped movable frame (1); the two sliders (6) are respectively slidably connected to the corresponding vertical plates (5); and the two sliders (6) are movably connected to the corresponding U-shaped rods (8) via connecting rods; The connecting rod comprises two connecting heads (7) which are rotatably connected to the slider (6) and the U-shaped rod (8) respectively; a limiting rod (39) which slides through the other connecting head (7) is fixed on the connecting head (7) close to the U-shaped rod (8); the two connecting heads (7) are connected via a connecting spring (9); and telescopic tubes (10) are provided through the two connecting heads (7) on the left side, and the air outlet end of the telescopic tube (10) is connected to a U-shaped air pipe (20) provided in the U-shaped rod (8) on the left side; The inner cavity of the U-shaped rod (8) on the left side is provided with a transmission gear (22), a first gear rod (21), a second gear rod (23) and a movable block (26); The left end of the first gear rod (21) is slidingly sealed and arranged in the inner cavity of the U-shaped air pipe (20); the first gear rod (21) is gear-connected with the second gear rod (23) through the transmission gear (22); a limit plate (28) is installed on the right end of the second gear rod (23); the limit plate (28) is slidably arranged in the inner cavity of the movable block (26); a second positioning block (29) is installed on the upper end of the second gear rod (23) through a second spring (30); and a slope is arranged on the left side of the second positioning block (29); and positioning grooves adapted to the movable block (26) are arranged at both ends of the right U-shaped rod (8); The inner cavity of the movable block (26) is connected to the first positioning block (24) via a first spring (25), and an inclined surface is provided on the right side of the first positioning block (24), and the lower end of the first positioning block (24) is connected to the limiting plate (28) via a pull rope (27); The two U-shaped rods (8) are each provided with a through hole, and the inner cavities of the two through holes are each movably provided with a pressing column (31), and the pressing column (31) is each connected to the inner wall of the through hole via a pressing spring (32); The automatic untying unit comprises a weight (15), two driving rods (16), two baffles (14) and a cylinder (11); the weight (15) is arranged in a through cavity provided on the mounting plate (4); two baffles (14) are provided, both of which are rotatably arranged on the mounting plate (4) via bearings (41); and the two baffles (14) are located below the weight (15); The upper ends of the two driving rods (16) are fixedly connected to the lower end of the impact plate (2), and the lower ends of the two driving rods (16) slide through the mounting plate (4) and the corresponding baffle plate (14). The driving rods (16) are provided with arc-shaped grooves (18), and the upper and lower ends of the arc-shaped grooves (18) are connected to the linear grooves (17). The inner cavity of the baffle plate (14) is provided with a sliding column (19) whose end is located in the linear groove (17); The cylinder (11) is arranged directly below the weight (15); the inner cavity of the cylinder (11) is provided with a hollow cylinder (13) in a sliding seal, and the hollow cylinder (13) is connected to the top of the inner cavity of the cylinder (11) via a lifting spring (12); the air outlet at the bottom of the cylinder (11) is connected to the air inlet of the telescopic tube (10) via a hose, and the U-shaped movable frame (1) is provided with a through opening adapted to the hose.

3. A safety protection device for underground mine operations according to claim 2, Features: It also comprises a magnetic assisting unit, one end of which is arranged on the weight (15) and the other end of which is arranged on the hollow cylinder (13), so that the untying and separation of the two U-shaped rods (8) can be stably completed while reducing the weight of the weight (15).

4. A safety protection device for underground mine operations according to claim 3, Features: The magnetic assist unit comprises a first permanent magnet (33) and a second permanent magnet (34) which are arranged opposite to each other, wherein the first permanent magnet (33) is arranged in a groove arranged at the bottom of the weight (15), and the second permanent magnet (34) is arranged in a groove arranged at the upper end of the hollow cylinder (13), and the magnetic poles of the opposite ends of the first permanent magnet (33) and the second permanent magnet (34) are opposite.

5. A safety protection device for underground mine operations according to claim 4, Features: It also includes a magnetic isolation unit, which is arranged in the inner cavity of the weight (15) and is used to block the magnetic force between the first permanent magnet (33) and the second permanent magnet (34), thereby facilitating the resetting of the weight (15).

6. A safety protection device for underground mine operations according to claim 5, Features: The magnetic isolation unit comprises two magnetic isolation plates (35) slidably arranged in the inner cavity of the weight (15), one end of each of the two magnetic isolation plates (35) is rotatably connected to the lower end of the corresponding force-bearing rod (36), the upper ends of the two force-bearing rods (36) are rotatably connected to the lower end of a pull ring (38) passing through the weight (15), and the lower end of the pull ring (38) is connected to the weight (15) via a tension spring (37).

7. A safety protection device for underground mine operations according to claim 2, Features: Three L-shaped plates (40) are arranged on the outer wall of the cylinder (11) at the left, right and front positions.

8. A safety protection device for underground mine operations according to claim 2, Features: The middle part of the mounting plate (4) is provided with a protrusion.

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