Hoisting device for coal mine liquid supply system

Abstract

The utility model provides a hoisting device for a coal mine liquid supply system, the hoisting device for the coal mine liquid supply system comprises a mounting rack, a first hoisting assembly and a second hoisting assembly, a pulley is arranged on the mounting rack, the first hoisting assembly is provided with a first hoisting rope, and the first hoisting rope is wound on the pulley; the second hoisting assembly comprises a case and a hoisting hook, the first hoisting rope is detachably connected with the case, the hoisting hook is provided with a connecting part and an inserting part, the connecting part and the inserting part are arranged in an L shape, the connecting part is connected with the case, and the inserting part is used for being inserted into a liquid supply pipe cavity of the liquid supply system. The hoisting device for the coal mine liquid supply system disclosed by the utility model can realize rapid and safe recovery of the liquid supply pipe, so that the labor intensity of workers can be reduced, the recovery efficiency is improved, and meanwhile, the operation safety is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of underground hoisting in coal mines, in particular to a hoisting device for a coal mine liquid supply system. Background Art

[0002] In coal mine production, especially in the excavation process of the working face like Xiaojiawa Coal Mine, remote fluid supply systems are widely used to improve work efficiency and ensure work safety. However, with the continuous advancement of excavation work, the recovery method of the fluid supply pipe mainly relies on manual handling, which is not only inefficient but also poses a great safety hazard.

[0003] Specifically, a single liquid supply pipe weighs 360 kilograms, and the number of pipes collected each time is about 60, which is a great test of the workers' physical strength. At the same time, the liquid supply pipe is usually located in the narrow space between the belt conveyor and the side wall of the tunnel. Such a working environment makes the handling operation extremely difficult. Workers need to operate in a limited space, which not only reduces work efficiency but also makes safety accidents more likely to occur. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the embodiment of the utility model proposes a lifting device for a coal mine liquid supply system, which can realize the rapid and safe recovery of the liquid supply pipe, thereby reducing the labor intensity of workers, improving the recovery efficiency, and ensuring the safety of the operation.

[0005] The embodiment of the utility model provides a lifting device for a coal mine fluid supply system, comprising:

[0006] A mounting frame, wherein a pulley is provided on the mounting frame;

[0007] A first hoisting assembly, the first hoisting assembly having a first hoisting rope, the first hoisting rope being wound around the pulley;

[0008] The second lifting component includes a chassis and a lifting hook, the first lifting rope is detachably connected to the chassis, the lifting hook has a connecting part and an inserting part, the connecting part and the inserting part are arranged in an L shape, the connecting part is connected to the chassis, and the inserting part is used to be inserted into the liquid supply tube cavity of the liquid supply system.

[0009] The lifting device for the coal mine liquid supply system provided by the embodiment of the utility model can realize the rapid and safe recovery of the liquid supply pipe through the coordinated cooperation of the mounting frame, the first lifting assembly and the second lifting assembly, thereby reducing the labor intensity of the workers, improving the recovery efficiency and ensuring the safety of the operation.

[0010] In some embodiments, there are two lifting hooks, and the lifting assembly further includes two second lifting ropes, and the two second lifting ropes are arranged in a one-to-one correspondence with the lifting hooks.

[0011] In some embodiments, the mounting frame includes a frame body, a rotating shaft and a movable bearing, the frame body is used to connect the tunnel anchor rod, the movable bearing is connected between the frame body and the rotating shaft, and the pulley is arranged on the rotating shaft.

[0012] In some embodiments, the frame includes a fixed seat and a movable seat, the movable seat is movable relative to the fixed seat, a locking member is provided between the movable seat and the fixed seat, and the rotating shaft is rotatably connected to the movable seat.

[0013] In some embodiments, the fixing seat is provided with a T-slot and a plurality of positioning holes, and the plurality of positioning holes are extended along the length direction of the T-slot. The or working member has a sliding block and a plug-in hole, and the sliding block is slidably arranged in the T-slot, and the positioning member is correspondingly plugged into the plug-in hole and the positioning hole.

[0014] In some embodiments, the mounting frame also includes a connecting member and two telescopic rods, the connecting member is connected between the frame body and the tunnel anchor rod, the two telescopic rods are symmetrically arranged on both sides of the connecting member, one end of the telescopic rod is connected to the frame body, and the other end of the telescopic rod corresponds to abutting against the tunnel roof.

[0015] In some embodiments, the connecting member also includes a connecting nut and a limiting plug, the connecting nut is arranged between the frame and the tunnel anchor, one end of the limiting plug is connected to the frame, and the other end of the limiting plug has an abutment portion, and the abutment portion is used to abut against the tunnel anchor.

[0016] In some embodiments, the connecting member is configured as a hanging ring.

[0017] In some embodiments, the first lifting assembly includes a vehicle body, a winch and a first drive, the first drive and the winch are arranged on the vehicle body, the first drive and the winch are connected in transmission connection, the first lifting rope is at least partially wound around the winch, and a plurality of rollers are provided at the bottom of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic diagram of the structure of a lifting device for a coal mine fluid supply system provided in an embodiment of the utility model.

[0019] Figure 2 It is a structural schematic diagram of a lifting device for a coal mine fluid supply system provided by another embodiment of the utility model.

[0020] Reference numerals:

[0021] 10. Liquid supply pipe; 20. Tunnel roof; 30. Tunnel anchor rod; 40. Conveyor belt;

[0022] 11. Mounting frame; 111. Pulley; 112. Frame; 113. Rotating shaft; 114. Bearing; 115. Fixed seat; 116. Movable seat; 117. Connecting piece; 1171. Connecting nut; 1172. Limit plug; 118. Telescopic rod; 12. First lifting assembly; 121. First lifting rope; 122. Vehicle body; 123. Winch; 124. Roller; 125. Leveling foot; 126. Handrail; 13. Second lifting assembly; 131. Chassis; 132. Lifting hook; 1321. Connecting part; 1322. Inserting part. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0024] like Figure 1 As shown, an embodiment of the utility model provides a lifting device for a coal mine liquid supply system, which comprises a mounting frame 11, a first lifting assembly 12 and a second lifting assembly 13. The mounting frame 11 is provided with a pulley 111, the first lifting assembly 12 has a first lifting rope 121, and the first lifting rope 121 is wound around the pulley 111; the second lifting assembly 13 comprises a chassis 131 and a lifting hook 132, the first lifting rope 121 is detachably connected to the chassis 131, the lifting hook 132 is L-shaped, the lifting hook 132 has a connecting portion 1321 and an inserting portion 1322, the connecting portion 1321 and the inserting portion 1322 are arranged in an L-shape, the connecting portion 1321 is connected to the chassis 131, and the inserting portion 1322 is used to be inserted into the cavity of the liquid supply pipe 10 of the liquid supply system.

[0025] Specifically, Figure 1The present invention is a structural diagram of a lifting device for a coal mine liquid supply system in the direction of coal mine tunnel excavation, wherein a first lifting assembly, a mounting frame, and a second lifting assembly are sequentially arranged along the direction of coal mine tunnel excavation. The mounting frame 11 can be fixed to the tunnel roof 20, and one end of the first lifting rope 121 can be wound around the pulley 111 to connect the chassis 131 of the second lifting assembly 13, so that the second lifting assembly 13 is lifted to a preset height, and then plugged into the cavity of the liquid supply pipe 10 through the lifting hook 132 to realize the lifting of the liquid supply pipe 10 in the liquid supply system, thereby avoiding the trouble and risk of operators directly installing the lifting device on the tunnel roof 20. In addition, the first lifting assembly 12 can easily lift the second lifting assembly 13 to a preset height through the combination of the pulley 111 and the first lifting rope 121. In this process, no manual climbing is required, which greatly reduces the labor intensity of workers.

[0026] Furthermore, the connection part 1321 of the lifting hook 132 is closely connected with the chassis 131 to form a stable whole, and the insertion part 1322 of the lifting hook 132 can be inserted into the cavity of the liquid supply pipe 10 of the liquid supply system, which can ensure that the liquid supply pipe 10 is firmly suspended on the lifting hook 132. In addition, the connection part 1321 and the insertion part 1322 of the lifting hook 132 are arranged in an L shape, so that the lifting hook 132 can adapt to liquid supply pipes 10 of different shapes and sizes, thereby improving the versatility and adaptability of the device. Whether it is a straight pipe or a curved pipe, effective fixation can be achieved.

[0027] In summary, in the lifting device for the coal mine liquid supply system provided in the embodiment of the utility model, through the coordinated cooperation of the mounting frame 11, the first lifting assembly 12 and the second lifting assembly 13, the liquid supply pipe 10 can be quickly and safely recovered, thereby reducing the labor intensity of the workers, improving the recovery efficiency, and ensuring the safety of the operation.

[0028] In some embodiments, there are two lifting hooks 132, and the second lifting assembly 13 further includes two second lifting ropes, and the two second lifting ropes and the lifting hooks 132 are arranged one by one, so that the two-point lifting and flexible operation of the liquid supply pipe 10 can be achieved. This design not only improves the stability and safety of the lifting operation, but also enhances the carrying capacity and versatility of the device, providing a strong guarantee for the smooth progress of coal mine production.

[0029] Specifically, the two lifting hooks 132 can realize double-point lifting of the liquid supply pipe 10. Compared with single-point lifting, double-point lifting is more stable and can effectively prevent the liquid supply pipe 10 from shaking or deflecting during the lifting process, thereby improving the safety of the lifting operation, ensuring the integrity of the liquid supply pipe 10 during the recovery process, and reducing the risk of damage caused by shaking.

[0030] Secondly, the two second hoisting ropes are arranged in a one-to-one correspondence with the two hoisting hooks 132, so that each hoisting hook 132 can be independently raised and lowered by the hoisting rope, which increases the flexibility and convenience of operation. The height and position of each hoisting hook 132 can be adjusted according to actual needs to adapt to different shapes and sizes of liquid supply pipes 10. At the same time, this also provides operators with more operating options, and they can flexibly choose the hoisting method according to the on-site conditions, thereby improving work efficiency.

[0031] In addition, the coordinated use of the two lifting hooks 132 and the two second lifting ropes also enhances the load-bearing capacity of the lifting device. Whether it is a large or small liquid supply pipe 10, stable and reliable lifting can be achieved by adjusting the distance and angle between the two lifting hooks 132. This design allows the lifting device to be applicable to more types of liquid supply pipes 10, improving the versatility and practicality of the device.

[0032] Furthermore, the second hoisting assembly 13 also includes a second driver, which can be arranged in the chassis 131, and the output end of the second driver is connected to the hoisting hook 132. The second driver serves as a power source for the hoisting hook 132, so that the lifting, swinging and other actions of the hoisting hook 132 can be achieved through the control of the second driver, thereby greatly improving the efficiency and accuracy of the hoisting operation.

[0033] In some embodiments, the mounting frame 11 includes a frame body 112, a rotating shaft 113 and a movable bearing 114. The frame body 112 is used to connect the tunnel anchor 30. The movable bearing 114 is connected between the frame body 112 and the rotating shaft 113. The pulley 111 is arranged on the rotating shaft 113, thereby improving the stability and reliability of the lifting device, reducing maintenance costs and use risks, and providing strong guarantees for the safe and efficient operation of the coal mine fluid supply system.

[0034] Specifically, the connection between the frame 112 and the tunnel anchor 30 enables the frame 112 to bear the weight from the hoisting assembly and the liquid supply pipe 10, ensuring the stability of the entire hoisting system. The movable bearing 114 allows the shaft 113 to rotate freely in the frame 112, thereby reducing the friction resistance of the pulley 111 during the rotation process, ensuring the stability and reliability of the shaft 113 during the rotation process. In addition, the pulley 111 is arranged on the shaft 113, and the support and lubrication of the movable bearing 114 can be used to ensure the stability and smoothness of the pulley 111 during the hoisting process, and facilitate the adjustment of the movement direction of the first hoisting rope 121.

[0035] like Figure 2 As shown, in some embodiments, the frame 112 includes a fixed seat 115 and a movable seat 116 , the movable seat 116 is movable relative to the fixed seat 115 , a locking member is provided between the movable seat 116 and the fixed seat 115 , and the rotating shaft 113 is rotatably connected to the movable seat 116 .

[0036] Specifically, Figure 2 The schematic diagram of the structure of the lifting device for the coal mine liquid supply system on the cross section of the coal mine tunnel is shown. The fixed seat 115 is extended along the left and right directions of the coal mine tunnel, so that the movable seat 116 can be moved along the left and right directions of the coal mine tunnel to adjust the position of the second lifting assembly 13, so that the device can adapt to tunnels of different widths and shapes. In other words, by adjusting the position of the movable seat 116, the position of the second lifting assembly 13 can be adjusted, thereby achieving accurate lifting of the liquid supply pipe 10. And the locking member can remain stable after the movable seat 116 is adjusted into place to prevent movement or shaking during the lifting process, which helps to improve the safety of the lifting operation and ensures the stability of the liquid supply pipe 10 during the lifting process.

[0037] In this embodiment, the fixed seat 115 is provided with a T-shaped slot and multiple positioning holes, and the multiple positioning holes are extended along the length direction of the T-shaped slot. The movable seat 116 has a sliding block and a plug-in hole. The sliding block is slidably arranged in the T-shaped slot, and the locking piece is correspondingly plugged into the plug-in hole and the positioning hole to achieve sliding cooperation between the fixed seat 115 and the movable seat 116.

[0038] In some embodiments, the mounting frame 11 also includes a connecting member 117 and two telescopic rods 118. The connecting member 117 corresponds to the connecting frame body 112 and the tunnel anchor rod 30. The two telescopic rods 118 are symmetrically arranged on both sides of the connecting member 117. One end of the telescopic rod 118 is connected to the frame body 112, and the other end of the telescopic rod 118 corresponds to abutting against the tunnel top plate 20, thereby avoiding the frame body 112 from shaking during the lifting process and affecting the lifting, thereby improving the stability during the lifting process.

[0039] Specifically, one end of the connector 117 can be connected to the fixing seat 115, and the other end of the connector 117 can be connected to the tunnel anchor rod 30 to fix the frame 112 tightly on the tunnel roof 20 to prevent it from loosening or falling off during the hoisting process, which helps to improve the safety of the operation. During the hoisting process, the telescopic rod 118 can resist the weight and tension from the hoisting assembly and the liquid supply pipe 10 to prevent the frame 112 from shaking or tilting. At the same time, the length of the telescopic rod 118 can be adjusted according to actual conditions to adapt to tunnel roofs 20 of different heights and shapes, further enhancing the adaptability and stability of the hoisting device.

[0040] like Figure 2 As shown, in some embodiments, the connecting member 117 also includes a connecting nut 1171 and a limiting plug 1172, the connecting nut 1171 is arranged between the frame 112 and the tunnel anchor 30, one end of the limiting plug 1172 is connected to the frame 112, and the other end of the limiting plug 1172 has an abutment portion, which is used to abut against the tunnel anchor 30.

[0041] Specifically, the connecting piece 117 can be connected to the tunnel anchor 30 through a thread, and the limiting plug 1172 abuts against the tunnel anchor 30, which can effectively prevent the linking nut and the tunnel anchor 30 from being separated, so as to ensure the connection stability between the tunnel anchor 30 and the connecting piece 117, and make the fixing of the mounting frame 11 more stable. In other words, when the connecting nut 1171 tightens the frame body 112 and the tunnel anchor 30, the abutting part of the limiting plug 1172 will play a role of limiting and fixing, effectively preventing the connecting nut 1171 and the tunnel anchor 30 from being separated when subjected to force, thereby improving the stability of the connection and helping to enhance the overall structural strength of the hoisting device.

[0042] like Figure 1 As shown, in some embodiments, the connecting member 117 can be set as a lifting ring. The lifting ring can be conveniently hung on the roadway anchor rod 30, and its position can be adjusted as needed to adapt to roadways of different widths and shapes. In addition, during the lifting process, due to the weight and inertia of components such as the liquid supply pipe 10, certain impacts and vibrations may be generated on the mounting frame 11. The lifting ring can alleviate these impacts and vibrations to a certain extent, protect the mounting frame 11 and the roadway anchor rod 30 from damage, and extend the service life of the lifting device.

[0043] like Figure 1 As shown, in some embodiments, the first lifting assembly 12 includes a vehicle body 122, a winch 123 and a first drive, the first drive and the winch 123 are arranged on the vehicle body 122, the first drive and the winch 123 are connected in transmission, the first lifting rope 121 is at least partially wound around the winch 123, and a plurality of rollers 124 are provided at the bottom of the vehicle body 122.

[0044] Specifically, the vehicle body 122 is a support platform for the first hoisting assembly 12. The rollers 124 at the bottom of the vehicle body 122 allow the first hoisting assembly 12 to move freely in the lane, and the position can be adjusted to meet different hoisting requirements. During use, the operator can push the vehicle body 122 to a predetermined position, and then drive the winch 123 to rotate through the first driver to achieve the retraction and release control of the first hoisting rope 121, thereby achieving the position change of the second hoisting assembly 13.

[0045] Furthermore, the first hoisting assembly 12 also includes a plurality of leveling legs 125, which are arranged at the bottom of the vehicle body 122. During use, the leveling legs 125 can be used to adjust the level of the vehicle body 122 to ensure that the vehicle body 122 can remain stable during the hoisting process, so that the vehicle body 122 can adapt to different terrains and road conditions, and prevent hoisting accidents caused by tilting or shaking. In addition, the leveling legs 125 have a simple adjustment mechanism, and the operator can easily adjust them to achieve rapid leveling and stable support of the vehicle body 122.

[0046] Optionally, the number of the leveling legs 125 can be four, the number of the rollers 124 can be four, and the leveling legs 125 and the rollers 124 are all disposed at the four corners of the vehicle body 122 .

[0047] Furthermore, the first hoisting assembly 12 further includes a handrail 126, which is disposed on the vehicle body 122. The handrail 126 is mounted on the vehicle body 122, and can provide a stable and reliable gripping point for the operator. During the hoisting operation, the operator can hold the handrail 126 to stabilize his posture and prevent accidental falls or collisions caused by shaking or imbalance.

[0048] During the use of the above-mentioned lifting device for the coal mine fluid supply system, the operator will fix the mounting frame 11 to the tunnel roof 20 through the connecting piece 117 to ensure a stable and reliable connection between the mounting frame 11 and the tunnel roof 20; then the operator will easily move the first lifting component 12 to the desired first position by controlling the roller 124 at the bottom of the vehicle body 122, wherein the selection of the first position needs to comprehensively consider factors such as the tunnel space, the lifting height, and the coordination with other equipment; then, the operator will wind the first lifting rope 121 around the pulley 111, and connect the other end of the rope to the chassis 131 of the second lifting component 13 , and it is necessary to ensure that the lifting rope is tightly wound and not easy to fall off, and at the same time, the connection must be firm and reliable; then, the operator will turn on the first drive to retract and release the first lifting rope 121 by driving the rotation of the winch 123. As the lifting rope is gradually tightened, the second lifting component 13 begins to rise slowly until it reaches the preset position; finally, when the second lifting component 13 reaches the predetermined position, the operator will install the lifting hook 132 on the liquid supply pipe 10; start the second drive, and lift the liquid supply pipe 10 to the predetermined position by controlling the lifting and swinging of the lifting hook 132, so as to facilitate the placement of the liquid supply pipe 10 on the conveyor belt 40 and complete the entire lifting operation.

[0049] In the description of the present invention, it should be understood that the terms "length", "up", "down", "front", "back", "left", "right", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] In the present invention, the terms "one embodiment", "some embodiments", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0054] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A lifting device for a coal mine liquid supply system, characterized in that: It includes a mounting frame, a first lifting component and a second lifting component, the mounting frame is provided with a pulley, the first lifting component has a first lifting rope, the first lifting rope is wound around the pulley, the second lifting component includes a chassis and a lifting hook, the first lifting rope is detachably connected to the chassis, the lifting hook has a connecting part and an inserting part, the connecting part and the inserting part are arranged in an L shape, the connecting part is connected to the chassis, and the inserting part is used to be inserted into the liquid supply tube cavity of the liquid supply system.

2. The lifting device for coal mine liquid supply system according to claim 1, characterized in that: The hoisting hooks are provided in two, and the second hoisting assembly further comprises two second hoisting ropes, and the two second hoisting ropes are provided in one-to-one correspondence with the hoisting hooks.

3. The lifting device for coal mine liquid supply system according to claim 1, characterized in that: The mounting frame comprises a frame body, a rotating shaft and a movable bearing. The frame body is used to connect the tunnel anchor rod. The movable bearing is connected between the frame body and the rotating shaft. The pulley is arranged on the rotating shaft.

4. The lifting device for coal mine liquid supply system according to claim 3, characterized in that: The frame body comprises a fixed seat and a movable seat, the movable seat is movable relative to the fixed seat, a locking piece is arranged between the movable seat and the fixed seat, and the rotating shaft is rotatably connected to the movable seat.

5. The lifting device for coal mine liquid supply system according to claim 4, characterized in that: The fixed seat is provided with a T-shaped slot and a plurality of positioning holes, and the plurality of positioning holes are extended along the length direction of the T-shaped slot. The movable seat has a sliding block and a plug-in hole, and the sliding block is slidably arranged in the T-shaped slot, and the locking piece is plugged into the plug-in hole and the positioning hole.

6. The lifting device for coal mine liquid supply system according to claim 3, characterized in that: The mounting frame also includes a connecting piece and two telescopic rods, wherein the connecting piece is connected between the frame body and the tunnel anchor rod, and the two telescopic rods are symmetrically arranged on both sides of the connecting piece, one end of the telescopic rod is connected to the frame body, and the other end of the telescopic rod is correspondingly abutted against the tunnel roof.

7. The lifting device for coal mine fluid supply system according to claim 6, characterized in that: The connecting member also includes a connecting nut and a limiting plug, wherein the connecting nut is arranged between the frame and the tunnel anchor, one end of the limiting plug is connected to the frame, and the other end of the limiting plug has an abutment portion, and the abutment portion is used to abut against the tunnel anchor.

8. The lifting device for coal mine fluid supply system according to claim 6, characterized in that: The connecting piece is configured as a lifting ring.

9. The lifting device for a coal mine fluid supply system according to any one of claims 1 to 8, characterized in that: The first lifting assembly includes a vehicle body, a winch and a first driver, wherein the first driver and the winch are arranged on the vehicle body, the first driver and the winch are connected in transmission, the first lifting rope is at least partially wound around the winch, and a plurality of rollers are arranged at the bottom of the vehicle body.

10. The lifting device for coal mine fluid supply system according to claim 9, characterized in that: The first lifting assembly further comprises a plurality of leveling legs, wherein the leveling legs are arranged at the bottom of the vehicle body; And / or, the first hoisting assembly further comprises an armrest, and the armrest is arranged on the vehicle body; And / or, the second lifting assembly further includes a second driver, and an output end of the second driver is connected to the lifting hook.

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