A semi-open type maintenance cable tray

Abstract

The utility model belongs to the coal mine underground equipment technical field, concretely relates to a kind of semi-opened maintenance cable channel, including cable channel body, plugboard subassembly, V-groove steel subassembly and cover plate;The cable channel body is fixedly installed on middle groove, and its internal space is used to store cable and water pipe;The plugboard subassembly is detachably connected with the side installation position of cable channel body;The V-groove steel subassembly is detachably connected with the middle side position of cable channel body, and V-groove steel subassembly and cable channel body are detachably connected by bolt;The cover plate is covered in the top opening of cable channel body, and the body of cover plate is provided with oval hole facilitating its disassembly.The utility model realizes the core target that coal mining machine can be overhauled without disassembling cable channel body, not only eliminates the tedious work of manual cable removal, water pipe, also greatly reduces the disassembly workload, effectively improves coal mining machine overhaul efficiency, reduces the production stagnation time caused by overhaul.

Description

Technical Field

[0001] This utility model belongs to the technical field of underground equipment in coal mines, and specifically relates to a semi-open maintenance cable trough. Background Technology

[0002] In underground coal mining operations, scraper conveyors play a core role in coal transportation, working in conjunction with the coal mining machine and hydraulic supports to ensure continuous production. When the coal mining machine malfunctions or requires periodic maintenance, a dedicated maintenance cable trough is used, which also serves as a basic storage area for cables and water pipes. However, despite multiple improvements, existing maintenance cable troughs still have shortcomings that affect maintenance efficiency and operational convenience, failing to fully meet the actual production needs of the mine.

[0003] The earliest maintenance cable troughs were structurally identical to ordinary cable troughs, only capable of housing cables and water pipes. When the coal mining machine needed maintenance, the entire cable trough had to be completely removed from its central section. This involved not only disassembling the trough itself but also simultaneously dealing with the cables and water pipes associated with it, resulting in a massive amount of disassembly work. This significantly extended the coal mining machine's downtime for maintenance and affected the underground production schedule.

[0004] To address the aforementioned challenge of complete disassembly, the designers made their first improvement to the cable trough: windows were created on the uprights of the cable trough, and pull-out inserts were embedded within them. During coal mining machine maintenance, only the inserts need to be pulled out to perform operations, initially achieving the goal of "maintenance without disassembling the entire trough." However, this improved structure is limited by the space of the V-shaped channel steel behind the cable trough, resulting in a narrow maintenance operating space. Workers are easily obstructed by the structure when performing maintenance actions inside the trough, making operation difficult and still unable to efficiently complete complex maintenance tasks.

[0005] To address the space constraints, the designers introduced a second improvement: a fully open-type cable trough for maintenance. This structure employs a two-tiered design, consisting of Cable Trench I, Cable Trench II, and connecting components such as bolts, pins, and flexible cylindrical pins. Cable Trench I, in the upper tier, handles the core functions of observation and maintenance, while Cable Trench II, in the lower tier, secures the central trough and houses cables and water pipes. While this structure solved the problem of insufficient maintenance space and eliminated the tedious manual dismantling of the entire trough and cables / pipes, it still has significant drawbacks: First, the split structure relies on multiple sets of bolts and pins for connection, resulting in lower overall strength and susceptibility to structural deformation under long-term exposure to underground vibrations and dust. Second, the bolt installation locations are susceptible to corrosion from the humid underground environment and corrosive media, making bolt removal difficult during maintenance and increasing the time spent on preparation work, thus failing to fundamentally improve maintenance efficiency.

[0006] In summary, existing maintenance cable troughs, due to their large disassembly workload, insufficient maintenance space, or low structural strength and disassembly difficulties, fail to meet the requirements of convenient maintenance, reliable use, and efficient operation. This results in cumbersome and time-consuming maintenance processes for coal mining machines, indirectly affecting the continuous production of fully mechanized mining faces in underground coal mines. Therefore, it is urgent to further optimize the design of the maintenance cable trough structure. Utility Model Content

[0007] To address the technical problems existing in the current maintenance cable trays, this utility model provides a semi-open maintenance cable tray.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A semi-open maintenance cable trough includes a cable trough body, a plug plate assembly, a V-shaped channel steel assembly, and a cover plate. The cable trough body is fixedly installed on the central trough, serving as the main structure of the maintenance cable trough, and its internal space is used to store cables and water pipes. The plug plate assembly is detachably connected to the side mounting position of the cable trough body, used for observing the operating status of the coal mining machine and for workers to perform maintenance operations on the coal mining machine. The plug plate assembly and the cable trough body are connected and disassembled via connectors. The V-shaped channel steel assembly is detachably connected to the central side position of the cable trough body, used to increase the operating space during coal mining machine maintenance. The V-shaped channel steel assembly and the plug plate assembly cooperate to allow maintenance of the coal mining machine without disassembling the cable trough body. The V-shaped channel steel assembly and the cable trough body are connected and disassembled via bolts. The cover plate covers the bottom opening of the cable trough body, used to provide full enclosure protection for the cables and water pipes inside the cable trough body. The cover plate body has elliptical holes for easy disassembly.

[0009] The connector for connecting the insert assembly to the cable trough includes a sleeve, a spring washer, a countersunk hexagonal screw, and a hexagonal nut. The sleeve is fitted into the corresponding mounting holes of the insert assembly and the cable trough. The countersunk hexagonal screw is of type M20×45, which passes through the mounting holes on the insert assembly, the mounting holes on the cable trough, the sleeve, and the spring washer in sequence, and is then threadedly connected to the hexagonal nut of type M20, thereby detachably fixing the insert assembly to the cable trough.

[0010] The bolts used for disassembling and assembling the V-channel steel assembly are hexagonal head bolts; the hexagonal head bolts are fully threaded, model M20×60, and after passing through the mounting holes on the V-channel steel assembly and the corresponding mounting holes on the cable trough, the V-channel steel assembly and the cable trough can be detachably fixed by bolt engagement. At the same time, the disassembly and assembly of the V-channel steel assembly can be completed by moving the upper limit pin of the V-channel steel assembly.

[0011] It also includes a limiting pin; the limiting pin is inserted into a pre-set limiting hole on the side of the cable trough, and one end of the limiting pin extends to the side limiting groove of the V-shaped channel steel assembly, which is used to limit and fix the position of the V-shaped channel steel assembly installed on the cable trough.

[0012] The spring washer is sandwiched between the hexagonal nut and the countersunk surface of the sleeve to prevent the internal hexagonal countersunk screw from loosening during use and to ensure the stability of the connection between the insert assembly and the cable trough. In addition, the structure of the hexagonal nut being recessed into the sleeve is beneficial to the disassembly and assembly of the insert assembly and the cable trough, and also to the movement of the coal mining machine cable, so as to avoid the problem of cable snagging.

[0013] The number of hexagonal head bolts is at least two, and they are spaced apart along the length of the V-shaped channel steel assembly. They are respectively matched with the mounting holes at corresponding positions on the cable trough, so that the V-shaped channel steel assembly is evenly stressed and fixed on the cable trough.

[0014] The limiting holes on the cable trough and the side limiting grooves of the insert plate assembly and the V-shaped channel steel assembly are all coaxially arranged to ensure that the limiting pin can accurately limit the insert plate assembly or the V-shaped channel steel assembly after insertion.

[0015] Compared with the prior art, the advantages of this utility model are: 1. This utility model achieves the core objective of maintaining the coal mining machine without disassembling the cable trough by designing the cable trough assembly as a combination of a fixed cable trough body and a detachable insert plate assembly, a V-shaped channel steel assembly, and a cover plate. Compared with the earliest method that required the entire cable trough to be removed, the first improvement which limited the maintenance space due to the V-shaped channel steel, and the second improvement which resulted in a fully open maintenance cable trough that was difficult to disassemble and had low strength, this invention not only eliminates the tedious work of manually removing cables and water pipes, but also significantly reduces the amount of disassembly work, effectively improves the maintenance efficiency of the coal mining machine, and reduces the production downtime caused by maintenance.

[0016] 2. This utility model specifically designs a V-shaped channel steel component, which works in conjunction with the insert plate component to completely solve the problem of insufficient maintenance space caused by the V-shaped channel steel restricting the cable trough after the first improvement. It can provide workers with sufficient operating space without disassembling the cable trough, reducing the maintenance difficulty for workers in the confined environment of underground coal mines, making complex operations such as coal mining machine fault diagnosis and component disassembly and assembly easier to implement, and improving the safety and convenience of maintenance operations.

[0017] 3. The detachable components of this utility model, such as the insert plate assembly, V-channel steel assembly, and cover plate, are all designed to be lightweight and easy to handle. The insert plate assembly is easily disassembled and assembled using sleeves, spring washers, internal hexagon countersunk screws, and hexagonal nuts. The V-channel steel assembly can be disassembled and installed using bolts. The cover plate also has elliptical holes for easy disassembly. Without the need for complex special tools, a single person can complete the operation of multiple detachable components. This is suitable for the limited handling conditions and confined space of underground coal mines, further reducing the operational intensity of workers.

[0018] 4. The cover plate provided by this utility model can completely cover the bottom opening of the cable trough, forming a fully enclosed protective structure for the cables and water pipes inside the trough. It can effectively isolate impurities such as dust, gangue impact, and water erosion in the coal mine, avoid cable insulation layer damage, water pipe interface leakage and other faults, significantly extend the service life of cables and water pipes, reduce the downtime of scraper conveyor auxiliary system caused by cable or water pipe failure, and ensure the stability of the overall equipment operation.

[0019] 5. This utility model uses a fixed cable trough as the main structure. Compared with the two-layer split structure of the second improved fully open maintenance cable trough, the overall structure has higher strength and stronger resistance to underground vibration and impact. It is not easy to deform the structure after long-term use. At the same time, the equipment adopts a modular design, and each component can be disassembled for transportation. It is lightweight and its size is adapted to the transportation conditions of underground roadways, which reduces the difficulty and cost of transportation from the ground to the underground working face. On-site assembly does not require complicated procedures, which further improves the efficiency of equipment deployment.

[0020] 6. The semi-open maintenance cable trough described in this utility model has been successfully applied in Shendong Halagou Coal Mine, and the feedback from users has been positive. This fully demonstrates that it can adapt to the complex working environment of coal mines, which is characterized by humidity, dust, and high vibration. It effectively meets the core needs of mine owners for efficient maintenance of coal mining machines, low downtime, and reliable equipment, and has high practical value for promotion and application in similar coal mines' underground fully mechanized mining faces. Attached Figure Description

[0021] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0022] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the cable trough structure of this utility model; Figure 3 This is a schematic diagram of the insert assembly of this utility model; Figure 4 This is a schematic diagram of the structure of the V-shaped channel steel assembly of this utility model; Figure 5 This is a schematic diagram of the structure of the cover plate of this utility model; Wherein: 1 is the cable trough, 2 is the insert plate assembly, 3 is the V-channel steel assembly, 4 is the cover plate, 5 is the sleeve, 6 is the spring washer, 7 is the internal hexagon countersunk screw, 8 is the hexagonal nut, 9 is the hexagonal head bolt, and 10 is the limit pin. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. These descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the claims of this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] This embodiment of the semi-open maintenance cable trough is used in conjunction with scraper conveyors in underground coal mines. Its core function is to protect cables during normal operation of the coal mining machine and facilitate operation during faults / maintenance. Its working principle revolves around ensuring stable normal operation and reducing the difficulty of maintenance operations. Figure 1-5 As shown, it is specifically divided into two stages: normal operation state and maintenance operation state. I. Normal Operating Status During normal operation of the coal mining machine, the cable trough 1 is fixedly installed on the central trough as the main structure. Its internal space is used to stably store the cables and water pipes of the scraper conveyor and the coal mining machine, avoiding direct exposure of the cables and water pipes to the damp, dusty, and easily impacted environment of the mine. The cover plate 4 covers the bottom opening of the cable trough 1, and the fully enclosed structure further protects the cables and water pipes in the trough, preventing impurities from entering and causing damage to the cable insulation and leakage of the water pipe interface. At the same time, the elliptical hole on the cover plate 4 can provide convenient operation points when the cover plate 4 needs to be removed later. At this time, the insert plate assembly 2 is detachably fixed to the side mounting position of the cable trough 1 through the connecting parts consisting of sleeve 5, spring washer 6, internal hexagon countersunk screw 7 (model M20×45) and hexagonal nut 8 (model M20): sleeve 5 is embedded in the mounting holes of the insert plate assembly 2 and the cable trough 1 respectively, internal hexagon countersunk screw 7 passes through the mounting holes on the insert plate assembly 2, the mounting holes on the cable trough 1, sleeve 5, spring washer 6 in sequence, and then is threadedly connected to hexagonal nut 8, and the spring washer 6 is clamped between the countersunk surface of hexagonal nut 8 and sleeve 5, which can effectively prevent the internal hexagon countersunk screw 7 from loosening due to underground vibration, and ensure the stable connection of insert plate assembly 2; in addition, this structure of countersunk hexagonal nut 8 into sleeve 5 is beneficial to the disassembly and assembly of insert plate assembly 2 and cable trough 1, and is also beneficial to the movement of coal mining machine cable (there will be no problem of cable snagging). The V-shaped channel steel assembly 3 is detachably connected to the middle side of the cable trough 1 by hexagonal head bolts 9 (fully threaded structure, model M20×60). There are at least two hexagonal head bolts 9, which are spaced apart along the length of the V-shaped channel steel assembly 3. After passing through the mounting holes on the V-shaped channel steel assembly 3 and the corresponding mounting holes on the cable trough 1, the V-shaped channel steel assembly 3 is fixed to the cable trough 1 through threaded engagement, ensuring that the V-shaped channel steel assembly 3 is evenly stressed and structurally stable. The limiting pin 10 is inserted into the pre-set limiting hole on the side of the cable trough 1, and one end of the limiting pin 10 extends to the limiting groove on the side of the V-shaped channel steel assembly 3. The movement of the limiting pin can realize the separation and connection of the pipe on the cable trough 1 and the pipe on the V-shaped channel steel assembly 3. The limiting holes on the cable trough 1 are coaxial with the side limiting grooves of the insert plate assembly 2 and the V-channel steel assembly 3, respectively, to limit and fix the position of the insert plate assembly 2 or the V-channel steel assembly 3 on the cable trough 1, preventing component displacement. Furthermore, during normal operation, the insert plate assembly 2 can be pulled out of the cable trough 1 to directly observe the operating status of the coal mining machine, allowing for preliminary inspection without disassembling other components.

[0028] II. Maintenance Operation Status When the coal mining machine malfunctions and requires maintenance, it is not necessary to disassemble the entire cable trough 1 and the cables and water pipes inside the trough. Simply follow these steps: First, quickly remove the cover plate 4 through the elliptical hole (or proceed with subsequent component disassembly and assembly operations directly according to actual maintenance needs); then, disassemble the corresponding connecting parts of the insert plate assembly 2: loosen the internal hexagon countersunk screw 7 and hexagonal nut 8, remove the spring washer 6 and sleeve 5, and the insert plate assembly 2 can be removed from above the cable trough 1, forming a preliminary maintenance access point; next, loosen the hexagonal head bolt 9 that secures the V-channel steel assembly 3, and simultaneously operate the limit switch. Pin 10 is separated from the pipe in the cable trough, and the V-shaped channel steel assembly 3 is removed from the middle side of the cable trough 1. Removing the V-shaped channel steel assembly 3 significantly increases the operating space during coal mining machine maintenance and, in conjunction with the disassembly of the insert plate assembly 2, allows for maintenance of the coal mining machine without disassembling the cable trough 1. If the limiting pin 10 obstructs the disassembly or assembly of the insert plate assembly 2 or the V-shaped channel steel assembly 3, the limiting pin 10 can be pulled out of the limiting hole on the side of the cable trough 1 first. After the insert plate assembly 2 and the V-shaped channel steel assembly 3 are properly disassembled or assembled, the limiting pin 10 can be reinserted into the limiting hole to reset its position. After completing the above operations, workers can directly perform maintenance on the faulty parts of the coal mining machine through the operating opening created by the disassembly of the insert plate assembly 2 and the expanded space created by the disassembly of the V-shaped channel steel assembly 3. After maintenance, install the V-channel steel assembly 3 in reverse order (tighten the hexagonal head bolts 9 to ensure they are evenly stressed and fixed to the cable trough 1), and the insert plate assembly 2 (reinstall the sleeve 5, and insert the internal hexagonal countersunk screws 7 through the mounting holes on the insert plate assembly 2, the mounting holes on the cable trough 1, the sleeve 5, and the spring washer 6 in sequence, and thread them to the hexagonal nut 8 and tighten them). Insert the limit pin 10 to limit and fix the V-channel steel assembly 3. Finally, close the cover plate 4 to restore the cable trough 1 to its fully enclosed state, and the equipment can return to normal operation.

[0029] The above description only describes the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.

Claims

1. A semi-open maintenance cable trough, characterized in that: The system includes a cable trough (1), a plug plate assembly (2), a V-shaped channel steel assembly (3), and a cover plate (4). The cable trough (1) is fixedly installed on the central trough and serves as the main structure for the maintenance cable trough. Its internal space is used to store cables and water pipes. The plug plate assembly (2) is detachably connected to the side mounting position of the cable trough (1) for observing the operating status of the coal mining machine and for workers to perform maintenance operations on the coal mining machine. The plug plate assembly (2) and the cable trough (1) are connected by a connector. The V-shaped channel steel assembly (3) is connected to the cable trough (4). The middle side of the cable trough (1) is detachably connected to increase the operating space during the maintenance of the coal mining machine. The V-shaped channel steel assembly (3) and the insert plate assembly (2) work together to enable the coal mining machine to be maintained without disassembling the cable trough (1). The V-shaped channel steel assembly (3) and the cable trough (1) are connected by bolts for disassembly and assembly. The cover plate (4) covers the bottom opening of the cable trough (1) to provide full protection for the cables and water pipes inside the cable trough (1). The cover plate (4) has an elliptical hole on its body for easy disassembly.

2. The semi-open maintenance cable trough according to claim 1, characterized in that: The connecting parts for connecting the insert assembly (2) and the cable trough (1) include a sleeve (5), a spring washer (6), a countersunk hexagonal screw (7), and a hexagonal nut (8). The sleeve (5) is fitted into the mounting holes corresponding to the insert assembly (2) and the cable trough (1). The countersunk hexagonal screw (7) is of model M20×45. It passes through the mounting holes on the insert assembly (2), the mounting holes on the cable trough (1), the sleeve (5), and the spring washer (6) in sequence, and then is threadedly connected to the hexagonal nut (8) of model M20, thereby detachably fixing the insert assembly (2) to the cable trough (1).

3. The semi-open maintenance cable trough according to claim 1, characterized in that: The bolts used for disassembling and assembling the V-channel steel assembly (3) are hexagonal head bolts (9); the hexagonal head bolts (9) are fully threaded, model M20×60, and after passing through the mounting holes on the V-channel steel assembly (3) and the mounting holes at the corresponding positions of the cable trough (1), the V-channel steel assembly (3) and the cable trough (1) can be detachably fixed by bolt cooperation. At the same time, the disassembly and assembly of the V-channel steel assembly (3) can be completed by moving the upper limit pin (10) of the V-channel steel assembly (3).

4. The semi-open maintenance cable trough according to claim 1, characterized in that: It also includes a limiting pin (10); the limiting pin (10) is inserted into a pre-set limiting hole on the side of the cable trough (1), and one end of the limiting pin (10) extends to the side limiting groove of the V-shaped channel steel assembly (3) to limit and fix the position of the V-shaped channel steel assembly (3) on the cable trough (1).

5. A semi-open maintenance cable trough according to claim 2, characterized in that: The spring washer (6) is sandwiched between the hexagonal nut (8) and the countersunk surface of the sleeve (5) to prevent the internal hexagonal countersunk screw (7) from loosening during use and to ensure the stability of the connection between the insert plate assembly (2) and the cable trough (1). In addition, the structure of the hexagonal nut (8) being recessed into the sleeve (5) is beneficial to the disassembly and assembly of the insert plate assembly (2) and the cable trough (1) and also to the movement of the coal mining machine cable, and will not cause the cable to get caught.

6. A semi-open maintenance cable trough according to claim 3, characterized in that: The number of hexagonal head bolts (9) is at least two, and they are distributed at intervals along the length of the V-shaped channel steel assembly (3), respectively cooperating with the mounting holes at corresponding positions on the cable trough (1), so that the V-shaped channel steel assembly (3) is evenly stressed and fixed on the cable trough (1).

7. A semi-open maintenance cable trough according to claim 4, characterized in that: The limiting hole on the cable trough (1) and the side limiting groove of the insert plate assembly (2) and the side limiting groove of the V-shaped channel steel assembly (3) are all coaxially set to ensure that the limiting pin (10) can accurately limit the insert plate assembly (2) or the V-shaped channel steel assembly (3) after insertion.

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