A cage hoisting fall protection device for coal mines

Abstract

This invention relates to the field of fall arrest protection devices, and discloses a fall arrest protection device for a coal mine cage hoisting system. The device includes a shaft body, with a shaft door rotatably connected to the outer side of the shaft body via a rotating shaft. A connecting handle is fixed to the outer side of the shaft door. The device is equipped with a fall arrest protection mechanism. In the event of a breakage of the hoisting rope, a guide frame limits the cage body within the shaft body, preventing imbalance. Simultaneously, the fall arrest support frame can engage with the corresponding fall arrest connection groove to provide support and lock, thus limiting the cage body to its current position and achieving fall arrest protection. The device also includes a reinforcement protection mechanism, which facilitates reinforcement of the connection between the support limit frame and the cage body. This enhances the connection strength after the support limit frame and the cage body are fixed, further improving the safety performance of the cage body.

Description

Technical Field

[0001] This invention relates to the field of fall protection devices, specifically a fall protection device for cage hoisting in coal mines. Background Technology

[0002] A coal mine is a rationally excavated space created by humans when mining coal-rich geological strata. It typically includes roadways, shafts, and working faces. Coal is the most important solid fuel and a type of combustible organic rock. It is formed from abundant vegetation that grew over a specific geological era, gradually accumulating into thick layers in suitable geological environments, and being buried underwater or in silt. Through long geological periods of natural coalification, coal typically contains 46%–97% carbon, ranges in color from brown to black, and has a dull to metallic luster. Based on the degree of coalification, coal can be classified into four categories: peat, lignite, bituminous coal, and anthracite. During coal mining, cages are used. A cage is a mine hoisting container used to transport personnel, ore, equipment, and materials. It can generally carry several tons and functions similarly to an elevator. The cage consists of upper, middle, and lower plates, a car stopper, and pillars. The suspension device is directly connected to the main body, eliminating the main and auxiliary hangers and corner plates, and directly connecting the suspension device to the main beam. This reduces the height of the cage and the hoist tower, and significantly reduces the weight of the main body, resulting in a simple structure and convenient installation. The upper plate is the main load-bearing component of the cage, bearing the entire load of the cage, the weight of the equipment itself, the weight of the tail rope, and the frictional resistance between the rollers and the guide rail during operation. Therefore, the material selection and process requirements are very strict. The main beam is the main load-bearing component of the cage, and during manufacturing, it is essential to ensure that the rolling direction of the steel plate is consistent with the direction of force, with a 10-20mm machining allowance around the perimeter. Strict flaw detection inspection must be carried out according to relevant standards before assembly. The car stoppers use rail surface protrusions and sliding car stops, used in conjunction with the pin-tooth car handling equipment.

[0003] Chinese patent discloses a fall protection device for lifting cages in polymetallic mines (authorization announcement number CN210103225 U). This patented technology includes a cage body, with a lifting ring fixedly connected to the top center of the cage body. A steel wire rope is connected to the lifting ring, and a U-shaped fixing frame fixedly connected to the top of the cage body is sleeved around the outer ring of the steel wire rope. Two sets of parallel crossbars are fixedly sleeved inside the fixing frame, located on both sides of the steel wire rope. Two sets of symmetrically arranged protection mechanisms are movably sleeved around the outer rings of the two sets of crossbars. This invention can buffer the cage's fall in the event of a steel wire rope breakage, protecting the safety of personnel and goods inside the cage, improving the cage's safety performance, reducing cage fall accidents caused by steel wire rope breakage, and simultaneously buffering the force of the fall, making the cage run smoothly and reducing the fear of personnel in the event of a breakage.

[0004] However, the aforementioned fall arrestor devices may not provide timely protection if the wire rope breaks during use, resulting in a long reaction time and limited fall arrest effectiveness. Therefore, those skilled in the art have provided a fall arrestor device for cage hoisting in coal mines to address the problems mentioned in the background section. Summary of the Invention

[0005] The purpose of this invention is to provide a cage hoisting anti-fall protection device for coal mines, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A cage hoisting anti-fall protection device for coal mines includes a shaft body, a shaft door rotatably connected to the outer side of the shaft body via a rotating shaft, a connecting handle fixed to the outer side of the shaft door, a support mounting pad fixed to the top of the shaft body, a mounting motor mounted on the top of the support mounting pad, a support metal frame fixed to the top of the shaft body, a winding roller fixedly mounted to the outer side of the output shaft of the mounting motor, and a hoisting rope body mounted to the outer side of the winding roller, one end of the hoisting rope body connected to an anti-fall protection mechanism, a cage body connected to the bottom of the anti-fall protection mechanism, a reinforcement protection mechanism mounted on the top of the cage body, guide frames fixed to both sides of the cage body, a connecting door hinged to the outer side of the cage body, limit slots on both sides of the anti-fall protection mechanism, and multiple anti-fall connecting slots inside the shaft body.

[0008] The fall protection mechanism includes a support connecting frame, a support limiting frame movably sleeved on the outer side of the support connecting frame, a fixed support frame fixed at the bottom of the support connecting frame, a rotating assembly frame rotatably connected to the outer side of the fixed support frame via a rotating shaft, a protective connecting shell rotatably connected to the end of the rotating assembly frame away from the fixed support frame via a rotating shaft, limiting mounting sleeves fixed on both inner walls of the support limiting frame, a metal limiting frame connected to one end of the rotating assembly frame via a rotating shaft, a bracket connecting head fixedly installed at the other end of the metal limiting frame, a pulling connecting block rotatably connected to the outer side of the bracket connecting head via a rotating shaft, a rotating connecting frame fixed to the outer side of the pulling connecting block, a fall protection support frame fixed to the outer side of the rotating connecting frame, a fixed connecting plate fixed to the outer side of the protective connecting shell, a metal threaded sleeve fixed to the outer side of the fixed connecting plate, a mounting connecting bolt threaded to the outer side of the metal threaded sleeve, a torsion spring mating with the outer side of the mounting connecting bolt, and a limiting mounting sleeve provided on the outer side of the mounting connecting bolt.

[0009] As a further embodiment of the present invention: the interior of the support limiting frame is provided with mounting holes that are adapted to the size of the support connecting frame, the outer side of the support connecting frame is fixed with a limiting pad, the support connecting frame and the lifting rope body are fixedly connected, one end of the torsion spring is connected to the mounting connecting bolt, and the other end of the torsion spring is connected to the rotating connecting frame.

[0010] As a further aspect of the present invention: the size of the limiting through groove is adapted to the size of the fall arrest support frame, and the inside of the protective shell is provided with a through groove, the size of which is adapted to the size of the fall arrest support frame.

[0011] As a further embodiment of the present invention: the metal threaded sleeve has a threaded hole inside, and the threaded hole and the mounting bolt are threaded mating components.

[0012] As a further embodiment of the present invention: the interior of the protective connecting housing is provided with a groove to accommodate the movement of the metal limiting frame and the bracket connector, and the rotating connecting frame and the fall protection support frame are welded and fixed together.

[0013] As a further embodiment of the present invention: the reinforcement and protection mechanism includes a reinforcement cast iron plate, a fixed semi-threaded rod fixed to the top of the reinforcement cast iron plate, a guide connecting groove opened on the top of the cage body, a guide slider slidably connected to the cage body through the guide connecting groove, a reinforcement cast iron sleeve fixed to one side of the guide slider, a movable semi-threaded rod fixed to the top of the reinforcement cast iron sleeve, a positioning connecting sleeve movably sleeved on the outer sides of the fixed semi-threaded rod and the movable semi-threaded rod, and a positioning threaded sleeve threadedly connected to the outer sides of the fixed semi-threaded rod and the movable semi-threaded rod.

[0014] As a further embodiment of the present invention: the reinforcing cast iron plate and the supporting limiting frame are fixedly connected, and the bottom surface of the reinforcing cast iron plate is in contact with the top surface of the cage body.

[0015] As a further embodiment of the present invention: the radius of the fixed semi-threaded rod is equal to the radius of the movable semi-threaded rod, and the outer side of the positioning threaded sleeve is provided with anti-slip texture.

[0016] As a further aspect of the present invention: the interior of the reinforced cast iron sleeve is provided with a groove, and the size of the groove is adapted to the size of the reinforced cast iron plate.

[0017] As a further embodiment of the present invention: the corresponding surface of the movable semi-threaded rod is in contact with the corresponding surface of the fixed semi-threaded rod, and the positioning threaded sleeve and the movable semi-threaded rod and the fixed semi-threaded rod are threaded mating components.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This device is equipped with a fall protection mechanism. In the event of a breakage of the hoisting rope, the guide frame will limit the cage body within the shaft body to prevent it from becoming unbalanced. At the same time, the fall protection support frame can be inserted into the corresponding fall protection connection groove to complete the support and locking, thus limiting the cage body to the current position and achieving the fall protection effect. Moreover, it can provide timely protection without any tilting or affecting the protection effect, thus having a good fall protection effect and improving the installation performance of the cage during use.

[0020] 2. This device is equipped with a reinforcement and protection mechanism. After the support limit frame and the cage body are fixedly connected, a reinforcement cast iron plate is fixed on the outside of the support limit frame. The positioning threaded sleeve can be used to connect with the fixed half threaded rod and the movable half threaded rod, thereby facilitating the reinforcement of the connection between the support limit frame and the cage body. After the support limit frame and the cage body are fixed, the connection strength of the connection can be improved, further enhancing the safety performance of the cage body. Attached Figure Description

[0021] Figure 1 A perspective view of a cage hoisting anti-fall protection device used in coal mines;

[0022] Figure 2 A side view of a cage hoisting fall protection device used in coal mines;

[0023] Figure 3 This is a front view of a cage hoisting fall protection device used in coal mines.

[0024] Figure 4 This is a partial structural cross-sectional view of the shaft body in a cage hoisting anti-fall protection device used in coal mines;

[0025] Figure 5 This is a schematic diagram of the outer structure of the cage body in a cage hoisting anti-fall protection device used in coal mines;

[0026] Figure 6 This is a perspective view of the outer side of the cage body in a cage hoisting anti-fall protection device used in coal mines;

[0027] Figure 7 This is a top view of the main body of a cage in a cage hoisting and fall protection device used in coal mines;

[0028] Figure 8 This is a schematic diagram of the fall protection mechanism in a cage hoisting fall protection device used in coal mines;

[0029] Figure 9 This is a top view of the protective connecting shell in a cage hoisting fall protection device used in coal mines;

[0030] Figure 10 This is a schematic diagram of the outer structure of the protective connecting shell in a cage hoisting fall protection device used in coal mines;

[0031] Figure 11 This is a front view of a reinforcement and protection mechanism in a cage hoisting fall protection device used in coal mines;

[0032] Figure 12 This is a schematic diagram of the outer part of the reinforcement and protection mechanism in a cage hoisting fall protection device used in coal mines.

[0033] In the diagram: 1. Shaft body; 2. Shaft door; 3. Connecting handle; 4. Support mounting pad; 5. Motor mounting; 6. Supporting metal frame; 7. Hoisting rope body; 8. Fall arrestor connecting groove; 9. Fall arrestor protection mechanism; 91. Support connecting frame; 92. Support limiting frame; 93. Fixed support frame; 94. Rotating assembly frame; 95. Protective connecting shell; 96. Metal limiting frame; 97. Bracket connector; 98. Pulling connecting block; 99. Rotating connecting frame; 910. Fall arrestor support frame; 911. Fixed 912. Connecting plate; 913. Metal threaded sleeve; 914. Torsion spring; 915. Mounting bolt; 916. Limiting mounting sleeve; 917. Protective shell; 10. Cage body; 11. Reinforcement and protection mechanism; 118. Reinforced cast iron plate; 119. Fixed semi-threaded rod; 110. Guide groove; 111. Guide slider; 112. Reinforced cast iron sleeve; 113. Movable semi-threaded rod; 114. Positioning connecting sleeve; 115. Positioning threaded sleeve; 116. Guide frame; 12. Connecting door; 13. Limiting through groove. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figure 1-12In this embodiment of the invention, a cage hoisting anti-fall protection device for coal mines includes a shaft body 1. A shaft door 2 is rotatably connected to the outside of the shaft body 1 via a rotating shaft. A connecting handle 3 is fixed to the outside of the shaft door 2. A support mounting pad 4 is fixed to the top of the shaft body 1. An installation motor 5 is installed on the top of the support mounting pad 4. A support metal frame 6 is fixed to the top of the shaft body 1. A winding roller is fixedly installed on the outside of the output shaft of the installation motor 5. A hoisting rope body 7 is installed on the outside of the winding roller. One end of the hoisting rope body 7 is connected to an anti-fall protection mechanism 9. A cage body 10 is connected to the bottom of the anti-fall protection mechanism 9. A reinforcing protection mechanism 11 is installed on the top of the cage body 10. Guide frames 12 are fixed on both sides of the cage body 10. A connecting door 13 is hinged to the outside of the cage body 10 via a hinge. Limiting slots 14 are opened on both sides of the anti-fall protection mechanism 9. Multiple anti-fall connecting slots 8 are opened inside the shaft body 1.

[0036] The fall protection mechanism 9 includes a support connecting frame 91, a support limiting frame 92 movably sleeved on the outer side of the support connecting frame 91, a fixed support frame 93 fixed at the bottom of the support connecting frame 91, a rotating assembly frame 94 rotatably connected to the outer side of the fixed support frame 93 via a pivot, a protective connecting shell 95 rotatably connected to the end of the rotating assembly frame 94 away from the fixed support frame 93 via a pivot, limiting mounting sleeves 915 fixed on both inner walls of the support limiting frame 92, a metal limiting frame 96 connected to one end of the rotating assembly frame 94 via a pivot, a bracket connector 97 fixedly installed at the other end of the metal limiting frame 96, a pulling connecting block 98 rotatably connected to the outer side of the bracket connector 97 via a pivot, and a rotating connecting frame 99 fixed to the outer side of the pulling connecting block 98. A fall arrestor support frame 910 is fixed to the outer side of the connecting frame 99. The size of the limiting through groove 14 is adapted to the size of the fall arrestor support frame 910. A through groove is opened inside the protective shell 916, and the size of the through groove is adapted to the size of the fall arrestor support frame 910. A fixing connecting plate 911 is fixed to the outer side of the protective connecting shell 95. A metal threaded sleeve 912 is fixed to the outer side of the fixing connecting plate 911. A mounting connecting bolt 914 is threadedly connected to the outer side of the metal threaded sleeve 912. A torsion spring 913 is connected to the outer side of the mounting connecting bolt 914. A limiting mounting sleeve 915 is provided on the outer side of the mounting connecting bolt 914. A mounting hole adapted to the size of the supporting connecting frame 91 is opened inside the supporting limiting frame 92. A limiting pad is fixed to the outer side of the supporting connecting frame 91. The support connecting frame 91 and the lifting rope body 7 are fixedly connected. One end of the torsion spring 913 is connected to the mounting connecting bolt 914, and the other end of the torsion spring 913 is connected to the rotating connecting frame 99. The metal threaded sleeve 912 has a threaded hole inside, and the threaded hole and the mounting connecting bolt 914 are threaded mating components. The protective connecting housing 95 has a groove inside to accommodate the movement of the metal limit frame 96 and the bracket connecting head 97. The rotating connecting frame 99 and the fall protection support frame 910 are welded and fixed. When this device is in use, a winding roller is fixedly connected to the outside of the output shaft of the mounting motor 5. At the same time, the lifting rope body 7 is set outside the winding roller. By driving the winding roller to rotate through the output shaft of the mounting motor 5, the lifting rope body 7 can be wound up and the support connecting frame 91 can be controlled. The lifting and lowering of the support and limiting frame 92 is controlled by the cage body 10 fixed at the bottom of the support and limiting frame 92, allowing the cage body 10 to move vertically. Guide frames 12 are provided on both sides of the cage body 10. The shaft body 1 has an anti-fall connection groove 8 and a guide groove adapted to the size of the guide frame 12, serving as a guide for the vertical movement of the cage body 10. If the hoisting rope body 7 breaks, the guide frame 12 will limit its movement within the shaft body 1, preventing the cage body 10 from becoming unbalanced. Simultaneously, after the hoisting rope body 7 breaks, the cage body 10 loses traction, causing it to descend rapidly. The support connecting frame 91 will also lose traction and move downwards relative to the support and limiting frame 92.The support connecting frame 91 causes the fixed support frame 93 to move downwards slightly. The connection between the fixed support frame 93 and the rotating assembly frame 94 will quickly break. After one end of the rotating assembly frame 94 is released from its fixed position, the other end of the rotating assembly frame 94 can no longer fix one end of the metal limit frame 96, and the metal limit frame 96 can no longer fix the outside of the bracket connector 97. Therefore, the torsion spring 913 on the outside of the mounting bolt 914 pushes the rotating connecting frame 99, causing it to rotate. Simultaneously, the fall arrest support frame 910 on the outside of the rotating connecting frame 99 moves. The fall arrest support frame 910 can extend from the limit through groove 14 to the outside of the support limit frame 92. The fall arrest support frame 910 can be inserted into the corresponding fall arrest connecting groove 8 to complete support and locking, limiting the cage body 10 to its current position, achieving the effect of fall arrest protection. Moreover, it provides timely protection without causing tilting or affecting the protection effect, exhibiting excellent fall arrest protection and improving the installation performance of the cage during use.

[0037] In one embodiment of the present invention, the reinforcement and protection mechanism 11 includes a reinforcement cast iron plate 111, a fixed semi-threaded rod 112 fixed to the top of the reinforcement cast iron plate 111, a guide connecting groove 113 opened on the top of the cage body 10, a guide slider 114 slidably connected to the cage body 10 through the guide connecting groove 113, a reinforcement cast iron sleeve 115 fixed to one side of the guide slider 114, a movable semi-threaded rod 116 fixed to the top of the reinforcement cast iron sleeve 115, and a groove opened inside the reinforcement cast iron sleeve 115, the size of which is the same as that of the reinforcement cast iron plate 111. The dimensions of the cage are adapted to fit the outer sides of the fixed semi-threaded rod 112 and the movable semi-threaded rod 116, which are movably fitted with positioning connecting sleeves 117. The outer sides of the fixed semi-threaded rod 112 and the movable semi-threaded rod 116 are threadedly connected with positioning threaded sleeves 118. The reinforcing cast iron plate 111 and the support limiting frame 92 are fixedly connected. The lower bottom surface of the reinforcing cast iron plate 111 is in contact with the upper top surface of the cage body 10. The radius of the fixed semi-threaded rod 112 is equal to the radius of the movable semi-threaded rod 116. The outer side of the positioning threaded sleeve 118 is provided with anti-slip texture. The movable semi-threaded rod... The corresponding surface of rod 116 is in contact with the corresponding surface of fixed half-threaded rod 112. The positioning threaded sleeve 118 and the movable half-threaded rod 116 are threadedly fitted with the fixed half-threaded rod 112. After the support limit frame 92 and the cage body 10 are fixedly connected, a reinforcing cast iron plate 111 is fixed on the outside of the support limit frame 92. The guide slider 114 can be moved to slide in the guide connecting groove 113. At this time, the guide connecting groove 113 drives the reinforcing cast iron sleeve 115 to move horizontally, and the reinforcing cast iron sleeve 115 can be movably sleeved on the outside of the reinforcing cast iron plate 111. The corresponding surface of the movable semi-threaded rod 116 at the top of the reinforced cast iron sleeve 115 is fitted with the corresponding surface of the fixed semi-threaded rod 112 at the top of the reinforced cast iron plate 111. The movable semi-threaded rod 116 and the fixed semi-threaded rod 112 are movably sleeved with positioning connecting sleeves 117, and positioning threaded sleeves 118 can be used to thread the fixed semi-threaded rod 112 and the movable semi-threaded rod 116, thereby facilitating the reinforcement of the connection between the support limiting frame 92 and the cage body 10, and improving the connection strength of the connection after the support limiting frame 92 and the cage body 10 are fixed.

[0038] The working principle of this invention is as follows: This device is equipped with a fall protection mechanism 9. During use, a winding roller is fixedly connected to the outer side of the output shaft of the motor 5. Simultaneously, a lifting rope body 7 is installed on the outer side of the winding roller. The output shaft of the motor 5 drives the winding roller to rotate, thereby winding the lifting rope body 7 and controlling the lifting and lowering of the support connecting frame 91 and the support limiting frame 92. At this time, the bottom of the support limiting frame 92 is fixed to the cage body 10, allowing the cage body 10 to move vertically. Guide frames 12 are installed on both sides of the cage body 10. The shaft body 1 has a fall protection connecting groove 8 and a guide groove that matches the size of the guide frame 12, serving as a guide when the cage body 10 moves vertically. If the lifting rope body 7 breaks, the guide frame 12 limits its movement within the shaft body 1, preventing the cage body 10 from becoming unbalanced. Simultaneously, after the lifting rope body 7 breaks, the cage body 10 loses traction, causing it to descend rapidly. The support connecting frame 91 also loses traction. The support connecting frame 91, relative to... The support limit frame 92 will move downward, causing the support connecting frame 91 to drive the fixed support frame 93 to move downward slightly. The connection between the fixed support frame 93 and the rotating assembly frame 94 will break quickly. After one end of the rotating assembly frame 94 is released from fixation, the other end of the rotating assembly frame 94 cannot fix one end of the metal limit frame 96, and the metal limit frame 96 cannot fix the outside of the bracket connector 97. Thus, the torsion spring 913 on the outside of the mounting connecting bolt 914 pushes the rotating connecting frame 99, causing the rotating connecting frame 99 to rotate, and the fall protection support frame 910 on the outside of the rotating connecting frame 99 moves at the same time. The fall protection support frame 910 can extend from the limit through groove 14 to the outside of the support limit frame 92. The fall protection support frame 910 can be inserted into the corresponding fall protection connecting groove 8 to complete the support and locking, so that the cage body 10 is limited to the current position, achieving the effect of fall protection. Moreover, it can protect in time without causing tilting or affecting the protection effect. It has a good fall protection effect and improves the installation performance of the cage during use.This device is equipped with a reinforcement and protection mechanism 11. After the support and limiting frame 92 and the cage body 10 are fixedly connected, a reinforcing cast iron plate 111 is fixed on the outside of the support and limiting frame 92. The guide slider 114 can be moved to slide in the guide connecting groove 113. At this time, the guide connecting groove 113 drives the reinforcing cast iron sleeve 115 to move horizontally. Moreover, the reinforcing cast iron sleeve 115 can be movably sleeved on the outside of the reinforcing cast iron plate 111. The movable semi-threaded rod 116 at the top of the reinforcing cast iron sleeve 115 corresponds to the surface of the reinforcing cast iron plate 111. The fixed semi-threaded rod 112 at the top is fitted with corresponding surfaces. A positioning connecting sleeve 117 is movably sleeved on the outer side of the movable semi-threaded rod 116 and the fixed semi-threaded rod 112. A positioning threaded sleeve 118 can be used to threadly connect the fixed semi-threaded rod 112 and the movable semi-threaded rod 116, thus facilitating the reinforcement of the connection between the support limiting frame 92 and the cage body 10. After the support limiting frame 92 is fixed to the cage body 10, the connection strength of the connection can be increased, further enhancing the safety performance of the cage body 10.

[0039] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cage hoisting anti-fall protection device for coal mines, comprising a shaft body (1), characterized in that, A shaft door (2) is rotatably connected to the outside of the shaft body (1) via a rotating shaft. A connecting handle (3) is fixed to the outside of the shaft door (2). A support mounting pad (4) is fixed to the top of the shaft body (1). A motor mounting (5) is installed on the top of the support mounting pad (4). A support metal frame (6) is fixed to the top of the shaft body (1). A winding roller is fixed to the outside of the output shaft of the motor mounting (5), and a lifting rope body (7) is installed on the outside of the winding roller. One end of the cage is connected to a fall protection mechanism (9), the bottom of the fall protection mechanism (9) is connected to a cage body (10), the top of the cage body (10) is provided with a reinforcement protection mechanism (11), both sides of the cage body (10) are fixed with guide frames (12), the outer side of the cage body (10) is hinged with a connecting door (13), both sides of the fall protection mechanism (9) are provided with limit slots (14), and the inside of the shaft body (1) is provided with multiple fall protection connecting slots (8). The fall protection mechanism (9) includes a support connecting frame (91), a support limiting frame (92) is movably sleeved on the outer side of the support connecting frame (91), a fixed support frame (93) is fixed at the bottom of the support connecting frame (91), a rotating assembly frame (94) is rotatably connected to the outer side of the fixed support frame (93) via a rotating shaft, a protective connecting shell (95) is rotatably connected to the end of the rotating assembly frame (94) away from the fixed support frame (93) via a rotating shaft, a limiting mounting sleeve (915) is fixed to the inner walls of both sides of the support limiting frame (92), a metal limiting frame (96) is connected to one end of the rotating assembly frame (94) via a rotating shaft, and a bracket connection is fixedly installed at the other end of the metal limiting frame (96). The head (97) is rotatably connected to a pull connecting block (98) via a rotating shaft. A rotating connecting frame (99) is fixed to the outside of the pull connecting block (98). A fall protection support frame (910) is fixed to the outside of the rotating connecting frame (99). A fixed connecting plate (911) is fixed to the outside of the protective connecting shell (95). A metal threaded sleeve (912) is fixed to the outside of the fixed connecting plate (911). An installation connecting bolt (914) is threadedly connected to the outside of the metal threaded sleeve (912). A torsion spring (913) is connected to the outside of the installation connecting bolt (914). A limit mounting sleeve (915) is provided on the outside of the installation connecting bolt (914).

2. The cage hoisting anti-fall protection device for coal mines according to claim 1, characterized in that, The support limiting frame (92) has an installation hole inside that matches the size of the support connecting frame (91). A limiting pad is fixed on the outside of the support connecting frame (91). The support connecting frame (91) and the lifting rope body (7) are fixedly connected. One end of the torsion spring (913) is connected to the mounting connecting bolt (914), and the other end of the torsion spring (913) is connected to the rotating connecting frame (99).

3. The cage hoisting anti-fall protection device for coal mines according to claim 2, characterized in that, The size of the limiting through groove (14) is adapted to the size of the fall arrest support frame (910), and the protective shell (916) has an opening through groove inside, and the size of the through groove is adapted to the size of the fall arrest support frame (910).

4. A cage hoisting anti-fall protection device for coal mines according to claim 2, characterized in that, The metal threaded sleeve (912) has a threaded hole inside, and the threaded hole and the mounting bolt (914) are threaded mating components.

5. A cage hoisting anti-fall protection device for coal mines according to claim 1, characterized in that, The protective connecting housing (95) has a groove inside that accommodates the movement of the metal limiting frame (96) and the bracket connector (97). The rotating connecting frame (99) and the fall protection support frame (910) are welded and fixed together.

6. A cage hoisting anti-fall protection device for coal mines according to claim 1, characterized in that, The reinforcement and protection mechanism (11) includes a reinforcement cast iron plate (111), a fixed half-threaded rod (112) is fixed on the top of the reinforcement cast iron plate (111), a guide connecting groove (113) is opened on the top of the cage body (10), a guide slider (114) is slidably connected to the cage body (10) through the guide connecting groove (113), a reinforcement cast iron sleeve (115) is fixed on one side of the guide slider (114), a movable half-threaded rod (116) is fixed on the top of the reinforcement cast iron sleeve (115), a positioning connecting sleeve (117) is movably sleeved on the outside of the fixed half-threaded rod (112) and the movable half-threaded rod (116), and a positioning threaded sleeve (118) is threadedly connected on the outside of the fixed half-threaded rod (112) and the movable half-threaded rod (116).

7. A cage hoisting anti-fall protection device for coal mines according to claim 6, characterized in that, The reinforced cast iron plate (111) and the support limiting frame (92) are fixedly connected, and the bottom surface of the reinforced cast iron plate (111) is in contact with the top surface of the cage body (10).

8. A cage hoisting anti-fall protection device for coal mines according to claim 7, characterized in that, The radius of the fixed semi-threaded rod (112) is equal to the radius of the movable semi-threaded rod (116), and the outer side of the positioning threaded sleeve (118) is provided with anti-slip texture.

9. A cage hoisting anti-fall protection device for coal mines according to claim 7, characterized in that, The interior of the reinforced cast iron sleeve (115) has a groove, and the size of the groove is adapted to the size of the reinforced cast iron plate (111).

10. A cage hoisting anti-fall protection device for coal mines according to claim 7, characterized in that, The corresponding surface of the movable semi-threaded rod (116) is in contact with the corresponding surface of the fixed semi-threaded rod (112), and the positioning threaded sleeve (118) and the movable semi-threaded rod (116) and the fixed semi-threaded rod (112) are threaded mating components.

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