A detachable joint for a hanging rail in a coal mine

Abstract

The utility model discloses a kind of detachable joints of hanging type track for coal mine, belong to track auxiliary equipment field. Including track sleeve and hoisting joint, hoisting joint includes hoisting joint main body and hoisting handle, hoisting handle is located on the upper end of main body and is fixedly connected, for hoisting fixed;The both ends of main body are provided with convex movable core. Track sleeve outside profile is matched with track inner hole, inside profile is matched with movable core;When assembling, track sleeve is embedded in track inner hole, movable core is inserted into track sleeve and is fixedly connected. Track sleeve is T-shaped, and the large end bottom is provided with a sliding slot along the length direction of movable core, the bottom of movable core is provided with a dismounting hole, and the dismounting hole is located in the sliding slot;Track sleeve and hoisting joint are both non-metallic composite material;Movable core bottom and track sleeve are connected by fixing screw with track. The utility model has the advantages of low self-weight, corrosion resistance, convenient installation and dismounting, reduced maintenance cost, etc.

Description

Technical Field

[0001] This utility model belongs to the field of track auxiliary equipment, specifically relating to a detachable suspended track joint for coal mines. Background Technology

[0002] Mining rail-mounted robot inspection systems are increasingly widely used in underground coal mines due to their excellent climbing ability and operational stability. This rail-mounted design does not occupy surface space and enables 24-hour uninterrupted inspection, integrating personnel, environmental, and equipment monitoring functions, effectively improving the level of intelligent safety production in coal mines. However, most existing rail-mounted joints are made of metal, which faces numerous severe challenges in the complex and variable environment of underground coal mines. The underground environment is consistently humid, with water vapor and moist gases permeating the air, making the surface of metal joints prone to oxidation and corrosion. Simultaneously, various highly corrosive gases exist underground, such as hydrogen sulfide, nitrogen oxides, and other acidic or alkaline volatiles. These substances react chemically with metal materials, further accelerating the corrosion process. Corrosion not only damages the surface structure of the joint but also penetrates into the interior, leading to decreased strength, deformation, and even breakage, thus significantly shortening the joint's service life. Compared to the surface environment, the lifespan of underground metal joints is often reduced to one-third or even less of the original lifespan, which not only increases the replacement frequency but also raises overall maintenance costs.

[0003] On the other hand, metal joints are quite heavy, typically weighing several kilograms or even tens of kilograms each. During underground transport, multiple workers are required to carry them or use specialized equipment for hoisting, which not only consumes a significant amount of manpower but also increases safety hazards in narrow, damp tunnels. During installation and maintenance, securing metal joints usually relies on welding or complex bolting systems, requiring specialized tools and extended operation times, further amplifying the labor intensity. Especially in emergency repair scenarios, rapid disassembly of metal joints often involves cutting or destructive removal, prolonging downtime and affecting the continuous operation of the inspection system. Utility Model Content

[0004] In view of this, the purpose of this utility model is to solve the above problems and provide a detachable hanging track joint for coal mines.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A detachable suspended rail joint for coal mines includes a rail sleeve and a lifting joint; The lifting joint includes a lifting joint body and a lifting handle. The lifting handle is located at the upper end of the lifting joint body and is fixedly connected to it for lifting and fixing. Both ends of the lifting joint body are fixedly provided with protruding movable cores. The outer contour of the track sleeve matches the inner hole of the track, and the inner contour of the track sleeve matches the movable core. During assembly, the track sleeve is fitted into the inner hole of the track; the movable core is inserted into the track sleeve and fixedly connected to it.

[0006] Furthermore, the bottom of the movable core is fixedly connected to the track sleeve by fixing screws, and the track sleeve and the track are also fixedly connected by fixing screws.

[0007] Furthermore, the track sleeve is T-shaped, with the small end of the T-shape embedded in the inner hole of the track, and the large end flush with the outer contour of the track.

[0008] Furthermore, the bottom of the large end of the track sleeve is provided with a groove arranged along the length of the movable core, and the bottom of the movable core is provided with a disassembly hole, which is located in the groove; for disassembly, the movable core is pushed out along the groove by inserting a tool into the disassembly hole.

[0009] Furthermore, the inner hole of the track sleeve is a pair of holes arranged side by side, and the shape of the movable core is the same.

[0010] Furthermore, the lifting handle is provided with two mounting holes distributed horizontally and vertically for fixing the lifting height.

[0011] Furthermore, both the track sleeve and the hoisting joint are made of non-metallic composite materials.

[0012] The beneficial effects of this utility model are as follows: The detachable hanging track joint for coal mines of this utility model achieves several significant technical effects through the structural design of the track sleeve and the lifting joint (including the lifting joint body, the lifting handle and the movable core).

[0013] First, the ease of installation and disassembly greatly improves operational efficiency. The sliding fit design of the track sleeve and the movable core allows for tool-less or simple tool disassembly via grooves and disassembly holes, completing track separation in just a few minutes, rather than destructive removal. This modular structure facilitates rapid downhole maintenance, adapts to roadway deformation or equipment upgrade needs, reduces personnel exposure time to hazardous environments, and indirectly reduces labor intensity and accident rates. The double connection between the movable core's bottom fixing screw and the track sleeve and track provides reliable mechanical locking, withstanding vibration loads during robotic inspections.

[0014] Secondly, this structure possesses excellent corrosion resistance. Underground coal mines experience high humidity and high concentrations of corrosive gases such as hydrogen sulfide and nitrogen oxides, making traditional metal joints prone to corrosion and failure. However, the non-metallic composite track sleeves and lifting joints of this structure, through sliding engagement and screw fixing, avoid easily corroded areas such as welded points, enhancing resistance to oxidation and acid / alkali corrosion. This ensures the stable operation of the track system in harsh environments, reducing downtime losses and maintenance costs caused by frequent replacements. The T-shaped track sleeve's design, with the small end embedded in the track's inner hole and the large end flush with it, further seals the connection interface, preventing the penetration of corrosive media.

[0015] Furthermore, in terms of weight, the structure utilizes lightweight components made of non-metallic composite materials. The T-shaped design of the track sleeve and the protruding interlocking of the movable core reduce redundant fasteners, resulting in a significantly lower self-weight than traditional metal joints. This lightweight design directly reduces the manpower required during transportation and installation. In the narrow and damp tunnels of underground coal mines, workers can easily carry and assemble the joint without the need for multiple people or heavy equipment, significantly reducing physical labor intensity and avoiding fatigue accumulation and safety accident risks caused by handling heavy objects.

[0016] Overall, the mechanical properties of this structure have been verified to withstand the full-load vibration of the inspection robot. The combined effect provides a reliable, economical, and durable connection solution for coal mine inspection systems, promoting the sustainable development of intelligent underground systems.

[0017] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the track sleeve in this utility model.

[0019] Figure 2 This is a schematic diagram of the hoisting joint in this utility model.

[0020] Figure 3 A schematic diagram of the structure for fixing screw installation.

[0021] Figure 4 This is a schematic diagram of the joint and track installation.

[0022] Figure 5 This is a schematic diagram of the structure for disassembling the connector.

[0023] Reference numerals: 1-track sleeve; 2-movable core; 3-fixing screw; 4-track; 5-slide groove; 6-removal hole; 7-movable core. Detailed Implementation

[0024] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0026] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] Example 1 like Figures 1-5 As shown, a detachable suspended track joint for coal mines includes a track sleeve 1 and a lifting joint. The lifting joint includes a lifting joint body and a lifting handle. The lifting handle is located at the upper end of the lifting joint body and is fixedly connected to it for lifting and fixing. Protruding movable cores 2 are fixedly provided at both ends of the lifting joint body. The outer contour of the track sleeve 1 matches the inner hole of the track 4, and the inner contour of the track sleeve 1 matches the movable core 2. During assembly, the track sleeve 1 is embedded in the inner hole of the track 4. The movable core 2 is inserted into the track sleeve 1 and fixedly connected to it.

[0028] The track sleeve 1 is T-shaped, with the small end of the T embedded in the inner hole of the track 4, and the large end flush with the outer contour of the track 4. The bottom of the large end of the track sleeve 1 has a groove 5 arranged along the length of the movable core 2, and the bottom of the movable core 2 has a disassembly hole 6 located within the groove 5. The inner hole of the track sleeve 1 is a pair of parallel holes, and the shape of the movable core 2 corresponds to this. The lifting handle has two mounting holes distributed horizontally and vertically for fixing the lifting height. Both the track sleeve 1 and the lifting connector are non-metallic composite materials; in this embodiment, low-emission halogen-free flame-retardant carbon fiber reinforced PA6 composite material is used. The bottom of the movable core 2 is fixedly connected to the track sleeve 1 by fixing screws 3, and the track sleeve 1 and track 4 are also fixedly connected by fixing screws 3. Multiple fixing screws 3 are evenly distributed on the bottom of the movable core 2 and the side wall of the track sleeve 1, with the screw heads located on the outside of the movable core 2 and the threaded ends inserted into the holes of the track sleeve 1, achieving a dual fixing effect on the movable core 2 and track 4 to prevent vibration-induced loosening.

[0029] During installation, the operator first taps the small end of the track sleeve 1 into the inner hole of the track 4, making the large end flush with the outer contour of the track 4 to form a continuous track structure. Then, the movable cores 2 at both ends of the lifting joint body are inserted into the double-hole inner cavity of the track sleeve 1, with one side of the movable core 2 facing the inside of the track sleeve 1, forming an end-aligned fitting connection. The movable cores 2 and the track sleeve 1 are fixed at the bottom by the fixing screws 3, and the track sleeve 1 and the track 4 are fixed simultaneously. When installing the lifting joints on both sides of the track, the movable cores 2 face the same track direction, forming a symmetrical connection structure that supports the suspension of the track 4 and the robot's crawling. The lifting handle is connected to the lifting system through the horizontal and vertical mounting holes. Height adjustment is achieved without the need for special tools; assembly can be completed simply by tapping and tightening screws, enabling rapid connection of track 4 and avoiding the problems of heavy metal joints and inconvenient installation and transportation. When disassembly is required, the worker first removes the fixing screws 3, then inserts a tool into the disassembly hole 6 and pushes the movable core 7 inward along the slide groove 5. The movable core 7 forms a slidable engagement with the track sleeve 1 through the slide groove 5. The inner wall of the slide groove 5 and the outer wall of the movable core 7 are frictionally connected to ensure no gaps or loosening during sliding. After the movable core 7 retracts, the engagement is released, facilitating the overall separation of track 4. The entire operation takes no more than five minutes, significantly reducing the labor intensity of personnel.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A detachable suspended track joint for coal mines, characterized in that: Includes track sleeves and lifting joints; The lifting joint includes a lifting joint body and a lifting handle. The lifting handle is located at the upper end of the lifting joint body and is fixedly connected to it for lifting and fixing. Both ends of the lifting joint body are fixedly provided with protruding movable cores. The outer contour of the track sleeve matches the inner hole of the track, and the inner contour of the track sleeve matches the movable core. During assembly, the track sleeve is fitted into the inner hole of the track; the movable core is inserted into the track sleeve and fixedly connected to it.

2. The detachable joint for suspended rails in coal mines according to claim 1, characterized in that, The bottom of the movable core is fixedly connected to the track sleeve by fixing screws, and the track sleeve is also fixedly connected to the track by fixing screws.

3. The detachable joint for suspended rails in coal mines according to claim 1, characterized in that, The track sleeve is T-shaped, with the small end of the T-shape embedded in the inner hole of the track, and the large end flush with the outer contour of the track.

4. The detachable joint for suspended rails in coal mines according to claim 3, characterized in that, The bottom of the large end of the track sleeve is provided with a sliding groove arranged along the length of the movable core. The bottom of the movable core is provided with a disassembly hole, which is located in the sliding groove. For disassembly, a tool is inserted into the disassembly hole, and the movable core is pushed out along the sliding groove.

5. The detachable joint for suspended rails in coal mines according to claim 1, characterized in that, The inner hole of the track sleeve is a pair of holes arranged side by side, and the shape of the movable core is the same.

6. The detachable joint for suspended rails in coal mines according to claim 1, characterized in that, The lifting handle has two mounting holes distributed horizontally and vertically for fixing the lifting height.

7. The detachable joint for suspended rails in coal mines according to claim 1, characterized in that, Both the track sleeve and the hoisting joint are made of non-metallic composite materials.

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