Underground ore lifting device for mining

Abstract

The invention relates to the technical field of ore lifting, in particular to an underground ore lifting device for mining, which comprises a lifting unit and a buffer unit, wherein the lifting unit comprises a mine tunnel, a mine winch is arranged on the top surface of the mine tunnel, a lifting box is arranged on the inner side of the mine tunnel, and a cable is arranged between the mine winch and the lifting box; and the buffer unit comprises a speed measuring wheel which is rotationally mounted at the side edge position of the top surface of the lifting box through a rotating shaft. When the lifting box falls, the cover plate slides through a related mechanical structure to expose the reflectors with different colors, a worker irradiates the reflectors with the help of a glare flashlight, the falling position of the lifting box can be rapidly and accurately judged according to the difference of the reflected light colors, rescue workers can rapidly formulate a rescue scheme with high pertinence and high feasibility, and the rescue efficiency is improved. The emergency response time is greatly shortened, the rescue efficiency is improved, and the secondary accident risk caused by information loss is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ore hoisting, and more specifically, to an underground ore hoisting device for mining. Background Art

[0002] Ore refers to natural rocks or mineral aggregates containing useful mineral components and having the value of mining and utilization. Ore is a natural product formed during geological processes. After mining, beneficiation, and processing, metals, non-metals, or other useful components can be extracted and widely used in industries, agriculture, science and technology, etc. Ore resources are an important material basis for the national economy and social development. With the progress of science and technology and the acceleration of the industrialization process, the demand for ore resources is increasing continuously.

[0003] After retrieval, according to the patent with the publication number CN118790861B, an underground ore hoisting device for mining is disclosed, which includes a lifting passage. A lifting frame is slidably connected to the inner wall of the lifting passage, and a clamping mechanism for supporting and locking the lifting frame is provided in the lifting passage. When a sudden power failure occurs during the ore hoisting process, the electromagnet is powered off and stops adsorbing the iron plate. Under the action of spring I, the iron plate drives the ratchet rack II thereon to move away from the lifting frame and engage with the ratchet rack I. Through the cooperation of the ratchet rack I and the ratchet rack II, the lifting frame is clamped and fixed in the lifting passage, realizing the support and locking of the lifting frame, avoiding the safety accident caused by the falling of the lifting frame when a sudden power failure occurs during the ore hoisting process, avoiding huge impacts and pulls on the driving motor and the entire hoisting device, thereby being able to protect the driving motor and reducing the risk of the fracture of steel rope I, effectively improving the stability and safety. However, when this solution is actually used, there are still the following deficiencies: During the ore mining or material transportation process, when using a lifting seat to vertically lift and transport ore, if the lifting seat accidentally and emergently falls due to sudden factors such as mechanical failures, power outages, operation errors, or structural damages, although the above-mentioned safety protection mechanism can be quickly activated and cause the lifting box to decelerate effectively until it finally stops during the falling process, during this process, due to the interference of on-site environments such as insufficient light, it is often difficult for workers to quickly and accurately judge the final locking position of the lifting seat through conventional observation means after the accident. The lack of this information not only prolongs the accident emergency response time but also increases the difficulty for rescue personnel to formulate targeted rescue plans.

[0004] Based on this, the present invention discloses an underground ore hoisting device for mining. Summary of the Invention

[0005] To solve the problem of inconvenient judgment of the falling position of the lifting seat proposed in the background art, the present invention provides an underground ore hoisting device for mining, which includes a lifting unit and a buffering unit; Wherein, the lifting unit comprises a mine tunnel, a mine hoist is arranged on the top surface of the mine tunnel, a lifting box is arranged on the inner side of the mine tunnel, and a cable is arranged between the mine hoist and the lifting box; The buffer unit comprises a speed measuring wheel rotatably mounted on the side of the top surface of the lifting box through a rotating shaft, an indicator box is fixedly mounted on the top surface of the lifting box, a reflective sheet is arranged on the inner bottom surface of the indicator box, a rotating cylinder is rotatably mounted on the inner top surface of the lifting box, and a covering net is arranged on the inner side of the rotating cylinder; Wherein, a trigger assembly is arranged between the speed measuring wheel and the indicator box, and a net casting assembly is arranged on the rotating cylinder; Wherein, a locking assembly is provided on the inner bottom surface of the lifting box; As a further improvement of the present technical solution, the trigger assembly includes a linkage wheel fixedly mounted on the end of the rotating shaft, a cover plate is slidably mounted on the inner wall of the indicator box, a pull rod is fixedly mounted on the side of the cover plate, the end of the pull rod away from the cover plate passes through the side of the indicator box and extends to the position of the linkage wheel and is fixedly mounted with a vertical plate, two magnetic sheets 1 are symmetrically fixedly mounted on the side of the cover plate and the inner wall of the indicator box, and the relative magnetic poles of the two relative magnetic sheets 1 are opposite, and a plurality of groups of centrifugal mechanisms distributed in a circular array are arranged on the linkage wheel.

[0006] As a further improvement of the present technical solution, the centrifugal mechanism includes a slot opened on the outer wall of the linkage wheel, a slide plate is slidably installed on the inner wall of the slot, a support spring is fixedly installed between the end of the slide plate and the inner wall of the slot, and magnetic sheets 2 are arranged on the side opposite to the vertical plate, and the relative magnetic poles of the two magnetic sheets 2 are the same.

[0007] As a further improvement of the present technical solution, the net casting assembly includes four opening and closing plates hinged on the bottom surface of the rotating cylinder and distributed in a ring array, the bottom end of the opening and closing plate is provided with a clearance opening, and the inner wall of the clearance opening is symmetrically fixedly installed with two lap plates, and a magnet is arranged between the two lap plates, and the four corners of the covering net are respectively fixedly connected to the top surfaces of the four magnets, and a connecting rod is fixedly installed on the top surface of the rotating cylinder, and the top end of the connecting rod passes through the top surface of the lifting box and is fixedly installed with a driven bevel gear, and the top surface of the lifting box is rotatably installed with a driving bevel gear meshing with the driven bevel gear, and the driving bevel gear is connected to the rotating shaft through a driven wheel and a synchronous belt transmission, and a limiting structure is arranged on the outer wall of the rotating cylinder and the opening and closing plate.

[0008] As a further improvement of the technical solution, the limiting structure includes a return spring sleeved on the outer wall of the rotating cylinder. The outer walls of the four opening and closing plates are slidably sleeved with limiting rings, and the two ends of the return spring are respectively fixedly connected to the rotating cylinder and the limiting ring. A rotating ring is rotatably installed on the top surface of the limiting ring. A through hole corresponding to the rotating ring is opened on the top surface of the lifting box. Two support rods are symmetrically and fixedly installed at one end of the cover plate away from the pull rod. The end of the support rod passes through the through hole and is fixedly installed with a limiting pressure plate adapted to the limiting ring.

[0009] As a further improvement of the technical solution, the support rod is L-shaped, and the outer wall of the magnet fits with the inner wall of the overlapping plate.

[0010] As a further improvement of the technical solution, the locking assembly includes a buffer plate slidably installed on the inner wall of the lifting box. Two track plates are symmetrically and fixedly installed on the top surface of the buffer plate. Two communication ports are symmetrically opened on the top surface of the track plate. Two clamping plates are symmetrically and rotatably installed on the inner walls of the track plates at positions corresponding to the communication ports. A cross bar corresponding to the clamping plate is fixedly installed on the inner wall of the track plate. Two groups of transmission structures corresponding to the clamping plates are symmetrically arranged inside the track plate.

[0011] As a further improvement of the technical solution, buffer structures are arranged between the four corners of the bottom surface of the buffer plate and the inner bottom surface of the lifting box, and a fitting groove is opened on the top surface of the clamping plate.

[0012] As a further improvement of the technical solution, the transmission structure includes a transmission rod rotatably installed on the inner wall of the track plate through a bracket. A fixed rod corresponding to the transmission rod is fixedly installed on the inner bottom surface of the lifting box. The top end of the transmission rod is located between the two clamping plates and is fixedly installed with a driving blade. The bottom end of the transmission rod is fixedly installed with a mounting plate. An arc-shaped groove is opened at the top end of the fixed rod. A spring telescopic rod corresponding to the arc-shaped groove is fixedly installed at the bottom end of the mounting plate.

[0013] As a further improvement of the technical solution, a limiting deep groove is opened on the outer wall of the fixed rod at the bottom end position of the arc-shaped groove, and the depth of the limiting deep groove is at least greater than the depth of the arc-shaped groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this underground ore lifting device for mining, by setting the cover plate and the reflective sheet, when the lifting box falls, the cover plate slides to expose reflective sheets of different colors through relevant mechanical structures. Workers use a strong flashlight to irradiate the reflective sheets, and they can quickly and accurately judge the falling position of the lifting box by using the difference in reflective colors. Rescue personnel can quickly formulate a highly targeted and feasible rescue plan, greatly shortening the emergency response time, improving the rescue efficiency, and reducing the risk of secondary accidents caused by information loss.

[0015] 2. In the underground ore lifting device for mining, by setting up a covering net and a magnet, when the lifting box falls and the cover plate slides, the relevant mechanical structure separates the limiting ring from the opening and closing plate. Under the action of centrifugal force, the opening and closing plate opens, the covering net unfolds to cover the ore truck, and the magnet adsorbs on the bottom of the lifting box, effectively avoiding the situation of ore spilling during the fall of the ore truck. This not only reduces the waste of ore resources but also reduces the secondary hazards that may be caused by ore spilling. At the same time, it also provides convenient conditions for subsequent rescue and cleaning work.

[0016] 3. In the underground ore lifting device for mining, by setting up a clamping plate and a limiting deep groove, during the process of the lifting box falling and stopping, the buffer plate and the ore truck continue to move downward under the action of inertia. Through structures such as transmission rods and driving blades, the clamping plate is driven to rotate to lock the wheels of the ore truck, ensuring that the ore truck can maintain a stable state after the lifting box stops, avoiding secondary injuries that may be caused by the shaking or movement of the ore truck. At the same time, the limiting deep groove cooperates with the buffer structure to enable the buffer plate to slide reciprocally in the vertical direction, further enhancing the buffer effect and enabling the ore truck to obtain more effective buffer protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the lifting box of the present invention; Figure 3 is Figure 2 the enlarged structural schematic diagram at A in Figure 4 is the structural schematic diagram of the indicating box of the present invention; Figure 5 is the structural schematic diagram of the local section of the linkage wheel of the present invention; Figure 6 is the front view sectional structural schematic diagram of the rotating cylinder of the present invention; Figure 7 is the internal structural schematic diagram of the lifting box of the present invention; Figure 8 is Figure 7 the enlarged structural schematic diagram at B in Figure 9 is the local section structural schematic diagram of the lifting box of the present invention; Figure 10 is Figure 9 the enlarged structural schematic diagram at C in Figure 11 is the structural schematic diagram of the transmission rod and the fixed rod of the present invention; Figure 12 is Figure 11 the enlarged structural schematic diagram at D in

[0018] The meanings of the various labels in the figure are as follows: 11. Mine tunnel; 12. Mine winder; 13. Lifting box; 14. Cable; 21. Speed measuring wheel; 22. Indicator box; 23. Linking wheel; 24. Cover plate; 25. Pull rod; 26. Vertical plate; 27. Magnetic sheet 1; 28. Reflective sheet; 31. Groove; 32. Slide plate; 33. Support spring; 34. Magnetic sheet 2; 41. Rotating cylinder; 42. Opening and closing plate; 43. Yielding opening; 44. Lapping plate; 45. Magnet; 46. Covering net; 47. Connecting rod; 48. Driven bevel gear; 49. Driving bevel gear; 51. Return spring; 52. Limit ring; 53. Rotating ring; 54. Through port; 55. Support rod; 56. Limit pressing plate; 61. Buffer plate; 62. Track plate; 63. Connecting port; 64. Clamping plate; 65. Cross bar; 71. Transmission rod; 72. Fixed rod; 73. Driving blade; 74. Mounting plate; 75. Arc groove; 76. Spring telescopic rod; 77. Limit deep groove. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Referring to Figures 1-5 , an underground ore lifting device for mining, which includes a lifting unit and a buffer unit; Among them, the lifting unit includes a mine tunnel 11, a mine winder 12 is arranged on the top surface of the mine tunnel 11, a lifting box 13 is arranged inside the mine tunnel 11, and a cable 14 is arranged between the mine winder 12 and the lifting box 13; Among them, the buffer unit includes a speed measuring wheel 21 rotatably installed on the side position of the top surface of the lifting box 13 through a rotating shaft, an indicator box 22 is fixedly installed on the top surface of the lifting box 13, a reflective sheet 28 is arranged on the inner bottom surface of the indicator box 22, a rotating cylinder 41 is rotatably installed on the inner top surface of the lifting box 13, and a covering net 46 is arranged inside the rotating cylinder 41; A trigger assembly is arranged between the speed measuring wheel 21 and the indicator box 22. The trigger assembly includes a linking wheel 23 fixedly installed at the end of the rotating shaft. A cover plate 24 is slidably installed on the inner wall of the indicator box 22. A pull rod 25 is fixedly installed on the side surface of the cover plate 24. One end of the pull rod 25 away from the cover plate 24 passes through the side surface of the indicator box 22 and extends to the position of the linking wheel 23 and is fixedly installed with a vertical plate 26. Two magnetic sheets 1 27 are symmetrically and fixedly installed on the side surface of the cover plate 24 and the inner wall of the indicator box 22, and the opposite magnetic poles of the two opposite magnetic sheets 1 27 are opposite. A number of centrifugal mechanisms are arranged on the linking wheel 23 in an annular array distribution; The centrifugal mechanism includes a slot 31 formed on the outer wall of the linkage wheel 23, a slide plate 32 is slidably mounted on the inner wall of the slot 31, a support spring 33 is fixedly mounted between the end of the slide plate 32 and the inner wall of the slot 31, and a second magnetic sheet 34 is disposed on the side of the slide plate 32 opposite to the vertical plate 26, and the relative magnetic poles of the two second magnetic sheets 34 are the same; When the ore is lifted normally, the ore car can be pushed into the lifting box 13, and the mine winch 12 can be turned on to reel in the cable 14, so as to lift the lifting box 13 along the mine tunnel 11. If an accident occurs during the lifting process and the lifting box 13 falls, when the lifting box 13 is normally lifted by the cable 14, the speed measuring wheel 21 on its top surface fits with the inner wall of the mine tunnel 11, so that it can rotate at a normal speed during the lifting of the lifting box 13. When the lifting box 13 falls, the falling speed of the lifting box 13 will increase under the action of gravity, and the rotation speed of the speed measuring wheel 21 and the linkage wheel 23 will also increase. When the linkage wheel 23 rotates normally, the centrifugal force of the slide plate 32 is less than the tension of the support spring 33, so the slide plate 32 can be located in the slot 31, and the linkage wheel 23 rotates When the speed increases, the centrifugal force of the slide plate 32 may increase accordingly, and then under the action of the centrifugal force, the slide plate 32 may slide along the slot 31 and slide out of the slot 31. When the slide plate 32 is opposite to the vertical plate 26, under the action of the repulsive magnetic force of the magnetic sheet 2 34 on the side of the slide plate 32 and the vertical plate 26, the vertical plate 26 may slide in the direction away from the indicator box 22 and pull the cover plate 24 through the pull rod 25, so that the cover plate 24 slides along the inner wall of the indicator box 22 and is finally fixed by the adsorption effect of the magnetic sheet 1 27. Since the reflective colors on both sides of the reflective sheet 28 are different, the reflective sheet 28 of another color may be exposed after the cover plate 24 slides. When the staff finds the fall and checks it, they can judge the fall position of the lifting box 13 by illuminating the reflection of the reflective sheet 28 with a strong flashlight, so as to formulate a rescue plan in time.

[0021] Refer to the figure Figure 3 , Figure 6 A net casting assembly is provided on the rotating cylinder 41, and the net casting assembly includes four opening and closing plates 42 which are hinged on the bottom surface of the rotating cylinder 41 and are distributed in a ring array. A clearance opening 43 is provided at the bottom end of the opening and closing plate 42, and two lap plates 44 are symmetrically fixedly installed on the inner wall of the clearance opening 43. A magnet 45 is provided between the two lap plates 44, and the outer wall of the magnet 45 is in contact with the inner wall of the lap plate 44. The four corners of the covering net 46 are respectively fixedly connected to the top surfaces of the four magnets 45. A connecting rod 47 is fixedly installed on the top surface of the rotating cylinder 41, and the top end of the connecting rod 47 passes through the top surface of the lifting box 13 and is fixedly installed with a driven bevel gear 48. A driving bevel gear 49 meshing with the driven bevel gear 48 is rotatably installed on the top surface of the lifting box 13, and the driving bevel gear 49 is connected to the rotating shaft through a driven wheel and a synchronous belt transmission. A limiting structure is provided on the outer wall of the rotating cylinder 41 and the opening and closing plate 42; Reference Figure 3 、 Figure 7 、 Figure 8 The limiting structure includes a return spring 51 sleeved on the outer wall of the rotating cylinder 41. A limiting ring 52 is slidably sleeved on the outer walls of the four opening and closing plates 42. The two ends of the return spring 51 are respectively fixedly connected to the rotating cylinder 41 and the limiting ring 52. A rotating ring 53 is rotatably installed on the top surface of the limiting ring 52. A through hole 54 corresponding to the rotating ring 53 is opened on the top surface of the lifting box 13. Two support rods 55 are symmetrically and fixedly installed at one end of the cover plate 24 away from the pull rod 25. The support rods 55 are L-shaped. The ends of the support rods 55 pass through the through hole 54 and are fixedly installed with a limiting pressure plate 56 adapted to the limiting ring 52; When the lifting box 13 falls and the cover plate 24 slides, the limiting pressure plate 56 can be pulled by the support rod 55. In the initial state, under the limiting action of the limiting pressure plate 56, the limiting ring 52 is located on the outer walls of the four opening and closing plates 42. When the speed measuring wheel 21 rotates, the driving bevel gear 49 can be driven to rotate through the driven wheel and the synchronous belt. The driving bevel gear 49 meshes with the driven bevel gear 48, and then the driven bevel gear 48, the connecting rod 47 and the rotating cylinder 41 can be driven to rotate. The limiting ring 52 can rotate with the rotating cylinder 41 under the action of the return spring 51 to limit the four opening and closing plates 42, so that the four opening and closing plates 42 can maintain a combined state, and the rotating ring 53 on the top surface of the limiting ring 52 contacts the limiting pressure plate 56, ensuring that the limiting ring 52 can rotate normally. When the limiting pressure plate 56 is separated from the limiting ring 52, under the reaction force of the return spring 51, the limiting ring 52 can slide upward and separate from the four opening and closing plates 42. Since the rotating cylinder 41 and the opening and closing plates 42 are rotating at high speed under the action of the speed measuring wheel 21 at this time, the opening and closing plates 42 can quickly open under the action of centrifugal force after the limit is released, releasing the four magnets 45. At the same time, since the covering net 46 rotates rapidly with the rotating cylinder 41, when the magnets 45 are released from the limit, the covering net 46 and the magnets 45 can fall and the covering net 46 can be unfolded under the action of centrifugal force to cover the ore truck. The magnets 45 can be adsorbed on the bottom of the lifting box 13 to prevent the ore in the ore truck from spilling out.

[0022] Reference Figures 9-12 The inner bottom surface of the lifting box 13 is provided with a locking component. The locking component includes a buffer plate 61 slidably installed on the inner wall of the lifting box 13. Buffer structures are arranged between the four corners of the bottom surface of the buffer plate 61 and the inner bottom surface of the lifting box 13. Two track plates 62 are symmetrically and fixedly installed on the top surface of the buffer plate 62. Two communication ports 63 are symmetrically opened on the top surface of the track plates 62. Two clamping plates 64 are symmetrically and rotatably installed on the inner walls of the track plates 62 at positions corresponding to the communication ports 63. An adaptation groove is opened on the top surface of the clamping plates 64. A cross bar 65 corresponding to the clamping plates 64 is fixedly installed on the inner wall of the track plates 62. Two groups of transmission structures corresponding to the clamping plates 64 are symmetrically arranged inside the track plates 62; The transmission structure includes a transmission rod 71 rotatably installed on the inner wall of the track plate 62 through a bracket. A fixed rod 72 corresponding to the transmission rod 71 is fixedly installed on the inner bottom surface of the lifting box 13. The top end of the transmission rod 71 is located between two clamping plates 64 and is fixedly installed with a driving blade 73. The bottom end of the transmission rod 71 is fixedly installed with a mounting plate 74. An arc-shaped groove 75 is opened at the top end of the fixed rod 72. A spring telescopic rod 76 corresponding to the arc-shaped groove 75 is fixedly installed at the bottom end of the mounting plate 74. A limiting deep groove 77 is opened on the outer wall of the fixed rod 72 at the position of the bottom end of the arc-shaped groove 75, and the depth of the limiting deep groove 77 is at least greater than the depth of the arc-shaped groove 75; When the lifting box 13 stops falling through first aid measures, at this time, under the action of inertia, the buffer plate 61 and the ore car will continue to move downward and compress the buffer structure. When the buffer plate 61 moves downward, it can drive the transmission rod 71 in the track plate 62 to move closer to the fixed rod 72. During this process, since the spring telescopic rod 76 on the mounting plate 74 at the bottom end of the transmission rod 71 is slidably connected to the arc-shaped groove 75, as the transmission rod 71 moves downward, under the combined action of the arc-shaped groove 75 and the spring telescopic rod 76, the transmission rod 71 can rotate and drive the driving blade 73 to rotate, so that the two driving blades 73 drive the two clamping plates 64 on both sides. When the clamping plates 64 are driven, they can rotate and rotate out of the communication port 63 to lock the wheels of the ore car, ensuring the stability of the ore car after the lifting box 13 stops and avoiding secondary injuries; at the same time, when the driving blade 73 rotates 90 degrees, the spring telescopic rod 76 can enter the position of the limiting deep groove 77, and under the action of its own elastic force, the spring telescopic rod 76 can extend into the limiting deep groove 77 to realize the locking of the spring telescopic rod 76. The transmission rod 71 and the driving blade 73 can no longer rotate, and the clamping plates 64 perform a stable locking action. And the limiting deep groove 77 is vertically arranged, so it can cooperate with the buffer structure to perform reciprocating sliding in the vertical direction for the buffering of the buffer plate 61, ensuring that the ore car can be effectively buffered. The working principle and connection method of the buffer structure are both existing mature technologies and will not be elaborated here.

[0023] The specific working principle of the present invention is as follows: During use, when normally lifting ores, the ore car can be pushed into the lifting box 13, and the wheels at the bottom of the ore car can be stuck on the two track plates 62. Then, the mine hoist 12 can be started to wind the cable 14, so as to lift the lifting box 13 along the mine tunnel 11. If an accident occurs during the lifting process and the lifting box 13 falls, when the lifting box 13 is normally driven by the cable 14 for lifting, the speed measuring wheel 21 on its top surface fits against the inner wall of the mine tunnel 11, and thus it can rotate at a normal speed during the lifting of the lifting box 13. When the lifting box 13 falls, under the action of gravity, the falling speed of the lifting box 13 will increase. At this time, the rotation speeds of the speed measuring wheel 21 and the linkage wheel 23 will also increase. When the linkage wheel 23 rotates normally, the centrifugal force of the sliding plate 32 is less than the pulling force of the support spring 33. Therefore, the sliding plate 32 can be located in the slot 31. When the rotation speed of the linkage wheel 23 increases, the centrifugal force of the sliding plate 32 can increase accordingly. Then, under the action of the centrifugal force, the sliding plate 32 can slide along the slot 31 and slide out of the slot 31. When the sliding plate 32 faces the vertical plate 26, under the repulsive magnetic force of the magnetic sheet two 34 on the side of the sliding plate 32 and the vertical plate 26, the vertical plate 26 can slide in the direction away from the indicator box 22 and pull the cover plate 24 through the pull rod 25, so that the cover plate 24 slides along the inner wall of the indicator box 22 and is finally fixed by the adsorption of the magnetic sheet one 27. Since the reflective colors on both sides of the reflective sheet 28 are different, after the cover plate 24 slides, the reflective sheet 28 of the other color can be exposed. When the staff discovers the falling situation and conducts an inspection, they can judge the falling position of the lifting box 13 by shining a strong flashlight on the reflection of the reflective sheet 28, so as to formulate a rescue plan in time; Meanwhile, when the falling cover plate 24 of the lifting box 13 slides, the limiting pressure plate 56 can be pulled by the support rod 55. In the initial state, under the limiting action of the limiting pressure plate 56, the limiting ring 52 is located on the outer walls of the four opening and closing plates 42. When the speed measuring wheel 21 rotates, it can drive the driving bevel gear 49 to rotate through the driven wheel and the synchronous belt. The driving bevel gear 49 meshes with the driven bevel gear 48, and then the driven bevel gear 48, the connecting rod 47 and the rotating cylinder 41 can be driven to rotate. The limiting ring 52 can rotate with the rotating cylinder 41 under the action of the return spring 51 to limit the four opening and closing plates 42, so that the four opening and closing plates 42 can maintain the combined state, and the rotating ring 53 on the top surface of the limiting ring 52 contacts the limiting pressure plate 56, ensuring that the limiting ring 52 can rotate normally. When the limiting pressure plate 56 is separated from the limiting ring 52, under the reaction force of the return spring 51, the limiting ring 52 can slide upward and separate from the four opening and closing plates 42. Since the rotating cylinder 41 and the opening and closing plates 42 rotate at high speed under the action of the speed measuring wheel 21 at this time, after the opening and closing plates 42 are released from the limit, they can quickly open under the action of the centrifugal force, release the four magnets 45. At the same time, since the covering net 46 rotates rapidly with the rotating cylinder 41, when the magnets 45 are released from the limit, the covering net 46 and the magnets 45 can fall and the covering net 46 can be unfolded under the action of the centrifugal force to cover the ore truck. The magnets 45 can be adsorbed on the bottom of the lifting box 13 to prevent the ore in the ore truck from spilling out; When the falling of the lifting box 13 stops through first aid measures, at this time, under the action of inertia, the buffer plate 61 and the ore truck will continue to move downward and compress the buffer structure. When the buffer plate 61 moves downward, it can drive the transmission rod 71 in the track plate 62 to move closer to the fixed rod 72. During this process, since the spring telescopic rod 76 on the mounting plate 74 at the bottom end of the transmission rod 71 is slidably connected with the arc groove 75, as the transmission rod 71 moves downward, under the cooperation of the arc groove 75 and the spring telescopic rod 76, the transmission rod 71 and the mounting plate 74 can rotate and drive the driving blade 73 to rotate, so that the two driving blades 73 drive the two clamping plates 64 on both sides. When the clamping plates 64 are driven, they can rotate and turn out of the communication port 63 to lock the wheels of the ore truck, ensuring the stability of the ore truck after the lifting box 13 stops and avoiding secondary injuries; at the same time, when the driving blade 73 rotates 90 degrees, the spring telescopic rod 76 can enter the position of the limiting deep groove 77, and under the action of its own elastic force, the spring telescopic rod 76 can extend into the limiting deep groove 77 to lock the spring telescopic rod 76. The transmission rod 71 and the driving blade 73 can no longer rotate, and the clamping plates 64 perform a stable locking action. And the limiting deep groove 77 is vertically arranged, so it can cooperate with the buffer structure to perform a reciprocating sliding in the vertical direction for the buffering of the buffer plate 61, ensuring that the ore truck can be effectively buffered. The working principle and connection method of the buffer structure are both existing mature technologies and will not be elaborated here.

[0024] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An underground ore lifting device for mining, characterized in that: It includes a lifting unit and a buffer unit; The lifting unit comprises a mine tunnel (11), a mine hoist (12) is arranged on the top surface of the mine tunnel (11), a lifting box (13) is arranged on the inner side of the mine tunnel (11), and a cable (14) is arranged between the mine hoist (12) and the lifting box (13); The buffer unit comprises a speed measuring wheel (21) rotatably mounted on a side edge of the top surface of the lifting box (13) via a rotating shaft, an indicator box (22) is fixedly mounted on the top surface of the lifting box (13), a reflective sheet (28) is provided on the inner bottom surface of the indicator box (22), a rotating cylinder (41) is rotatably mounted on the inner top surface of the lifting box (13), and a covering net (46) is provided on the inner side of the rotating cylinder (41); Wherein, a trigger assembly is provided between the speed measuring wheel (21) and the indicator box (22), and a net casting assembly is provided on the rotating cylinder (41); Wherein, a locking assembly is provided on the inner bottom surface of the lifting box (13).

2. The underground ore lifting device for mining according to claim 1, characterized in that: The trigger assembly comprises a linkage wheel (23) fixedly mounted on the end of a rotating shaft, a cover plate (24) is slidably mounted on the inner wall of the indicator box (22), a pull rod (25) is fixedly mounted on the side of the cover plate (24), one end of the pull rod (25) away from the cover plate (24) passes through the side of the indicator box (22) and extends to the position of the linkage wheel (23) and is fixedly mounted with a vertical plate (26), two magnetic sheets (27) are symmetrically fixedly mounted on the side of the cover plate (24) and the inner wall of the indicator box (22), and the relative magnetic poles of the two opposite magnetic sheets (27) are opposite, and a plurality of groups of centrifugal mechanisms distributed in a ring array are arranged on the linkage wheel (23).

3. The underground ore lifting device for mining according to claim 2, characterized in that: The centrifugal mechanism comprises a slot (31) formed on the outer wall of the linkage wheel (23); a slide plate (32) is slidably mounted on the inner wall of the slot (31); a support spring (33) is fixedly mounted between the end of the slide plate (32) and the inner wall of the slot (31); and two magnetic plates (34) are disposed on the side opposite to the vertical plate (26), and the two magnetic plates (34) have the same relative magnetic poles.

4. The underground ore lifting device for mining according to claim 3 is characterized in that: The net casting assembly comprises four opening and closing plates (42) which are hinged on the bottom surface of a rotating cylinder (41) and are distributed in a ring array. A clearance opening (43) is provided at the bottom end of the opening and closing plates (42). Two overlapping plates (44) are symmetrically fixedly installed on the inner wall of the clearance opening (43). A magnet (45) is arranged between the two overlapping plates (44). The four corners of the covering net (46) are respectively fixedly connected to the top surfaces of the four magnets (45). A connecting rod (47) is fixedly installed on the top surface of the rotating cylinder (41). The top end of the connecting rod (47) passes through the top surface of the lifting box (13) and is fixedly installed with a driven bevel gear (48). A driving bevel gear (49) meshing with the driven bevel gear (48) is rotatably installed on the top surface of the lifting box (13), and the driving bevel gear (49) is connected to the rotating shaft through a driven wheel and a synchronous belt transmission. The outer walls of the rotating cylinder (41) and the opening and closing plates (42) are provided with a limiting structure.

5. The underground ore lifting device for mining according to claim 4, characterized in that: The limiting structure comprises a return spring (51) sleeved on the outer wall of the rotating cylinder (41), the outer walls of the four opening and closing plates (42) are slidably sleeved with a limiting ring (52), and the two ends of the return spring (51) are respectively fixedly connected to the rotating cylinder (41) and the limiting ring (52), a rotating ring (53) is rotatably mounted on the top surface of the limiting ring (52), a through opening (54) corresponding to the rotating ring (53) is opened on the top surface of the lifting box (13), and two support rods (55) are symmetrically fixedly mounted on one end of the cover plate (24) away from the pull rod (25), and the ends of the support rods (55) pass through the through opening (54) and are fixedly mounted with a limiting pressure plate (56) adapted to the limiting ring (52).

6. The underground ore lifting device for mining according to claim 5, characterized in that: The support rod (55) is L-shaped, and the outer wall of the magnet (45) is in contact with the inner wall of the lap plate (44).

7. The underground ore lifting device for mining according to claim 1, characterized in that: The locking assembly comprises a buffer plate (61) slidably mounted on the inner wall of the lifting box (13); two track plates (62) are symmetrically fixedly mounted on the top surface of the buffer plate (61); two connecting openings (63) are symmetrically provided on the top surface of the track plate (62); two clamping plates (64) are symmetrically mounted on the inner wall of the track plate (62) at positions corresponding to the connecting openings (63); a cross bar (65) corresponding to the clamping plate (64) is fixedly mounted on the inner wall of the track plate (62); and two groups of transmission structures corresponding to the clamping plates (64) are symmetrically arranged on the inner side of the track plate (62).

8. The underground ore lifting device for mining according to claim 7, characterized in that: Buffer structures are provided between the four corners of the bottom surface of the buffer plate (61) and the inner bottom surface of the lifting box (13), and an adaption groove is provided on the top surface of the clamping plate (64).

9. The underground ore lifting device for mining according to claim 7, characterized in that: The transmission structure comprises a transmission rod (71) rotatably mounted on the inner wall of the track plate (62) via a bracket; a fixing rod (72) corresponding to the transmission rod (71) is fixedly mounted on the inner bottom surface of the lifting box (13); the top end of the transmission rod (71) is located between two clamping plates (64) and is fixedly mounted with a driving leaf (73); the bottom end of the transmission rod (71) is fixedly mounted with a mounting plate (74); the top end of the fixing rod (72) is provided with an arc groove (75); and the bottom end of the mounting plate (74) is fixedly mounted with a spring telescopic rod (76) corresponding to the arc groove (75).

10. The underground ore lifting device for mining according to claim 9, characterized in that: A limited depth groove (77) is provided on the outer wall of the fixing rod (72) at the bottom end of the arc-shaped groove (75), and the depth of the limited depth groove (77) is at least greater than the depth of the arc-shaped groove (75).

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