A power cable retracting and releasing device for continuous mining machine

Abstract

The present invention discloses a continuous miner power cable retracting and releasing device, which includes a cable hook; a crusher suspended slide is fixed on the top cover of the crusher, and the continuous miner suspended slide is fixed on the top plate of the continuous miner through a connecting mechanism; a plurality of cable hooks arranged in a row are fixed on the top plate of the tunnel between the crusher and the continuous miner, and the power cable passes through the crusher suspended slide, the cable hook and the continuous miner suspended slide in sequence. Advantages: The present invention passes the power cable of the continuous miner through the crusher suspended slide, sets it on the cable hook, and then sends it from the continuous miner suspended slide to the line inlet cavity of the continuous miner, which effectively avoids the power cable from falling to the ground, eliminates the possibility of the power cable being scratched by ironware and sharp objects, avoids the risk of electric shock caused by power cable leakage, and greatly improves the power supply safety of the continuous miner; the present invention realizes random automatic retracting and releasing, and only requires one person to assist in monitoring, which significantly reduces the intensity of manual labor.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine electromechanical equipment, and in particular to a power cable retracting and releasing device for a continuous mining machine. Background Art

[0002] In underground coal mines, the continuous mining machine tunneling process is a tunneling machine excavation process with relatively high excavation efficiency; the main equipment supporting the continuous mining machine are shuttle cars, crushers and large anchor bolters; the crusher is a relatively fixed equipment, which is overlapped with the tail of the chute belt conveyor; the continuous mining machine, shuttle cars and large anchor bolters are mobile equipment, and the power cable of about 80 meters moves with the machine. When the continuous mining machine needs to be driven head-on during excavation, the power cable following the machine is on the ground. In order to prevent the power cable from being crushed by the continuous mining machine itself and equipment such as the shuttle car, one person is required to follow the continuous mining machine during operation, and pay attention to placing the power cable against the side at any time; during excavation The shuttle car shuttles between the continuous miner and the crusher. The shuttle car is equipped with a power cable reel, and the probability of the power cable being crushed in the ground section is extremely small. During the cutting period of the continuous miner, the operators need to pay close attention to the swing direction of the power cable. When the continuous miner finishes cutting and exits, two operators are required to place the power cable reel on the body of the continuous miner. After the continuous miner exits the excavation working face, the large-scale anchor bolter enters the excavation working face to start support. The large-scale anchor bolter has a cable reel, and the probability of the power cable being crushed in the ground section is extremely small. It can be seen that the arrangement of the power cable of the continuous miner is an important issue during the movement of the continuous miner.

[0003] The conventional method of manually arranging the power cables of continuous miners has the following major problems: First, the frequency of manual arrangement and collection and release of the power cables of continuous miners is relatively high, which significantly increases the labor intensity of operators; second, the power cables that fall to the ground are more likely to be scratched by iron and sharp objects, and troubleshooting is also relatively difficult; third, the actual usage of the power cables of continuous miners is inestimable, and the power cables pre-stored on the continuous miners are very messy and difficult to control, which brings great difficulties to the arrangement of the power cables; fourth, after the power cables of continuous miners are randomly damaged, the risks of leakage and electric shock are significantly increased; fifth, when the power cables are coiled on the continuous miner, it is an aerial operation, and the manual labor intensity is relatively high. The safety risks of power cables hitting operators and power cables being crushed by the continuous miner are relatively high; sixth, the on-site vision is relatively weak during excavation, and there is a safety risk of being hit by the personnel who follow the machine to arrange the power cables. Summary of the invention

[0004] The object of the present invention is to provide a power cable retracting and releasing device for a continuous mining machine which can effectively prevent power cables from falling to the ground and being scratched without the need for manual arrangement of the power cables, thereby reducing the labor intensity of manual labor.

[0005] The present invention is implemented by the following technical scheme: a continuous miner power cable retracting and releasing device, which includes a crusher suspended slide, a cable hook and a continuous miner suspended slide; the crusher suspended slide with the outlet end bent upward toward the continuous miner is fixed on the top cover of the crusher, and the continuous miner suspended slide placed above the continuous miner is fixed to the top plate of the continuous miner through a connecting mechanism, and the high end of the continuous miner suspended slide is bent upward toward the crusher; a plurality of cable hooks arranged in a row are fixed on the top plate of the tunnel between the crusher and the continuous miner, and the power cable is sequentially passed through the crusher suspended slide, the cable hook and the continuous miner suspended slide.

[0006] Furthermore, the connecting mechanism includes a base, a lifting cylinder and a support rod; the base is horizontally rotatably connected to the top plate of the continuous miner, the two ends of the support rod are respectively hinged to the lower end of the suspended slide of the continuous miner and the base, the cylinder end of the lifting cylinder is hinged to the base, and the telescopic rod end of the lifting cylinder is hinged to the high end of the suspended slide of the continuous miner.

[0007] Furthermore, the suspended slide of the crusher and the suspended slide of the continuous miner are both hollow tubes, and guide rings are coaxially fixed to the two end ports of the suspended slide of the crusher and the two end ports of the suspended slide of the continuous miner through connecting parts, and more than three evenly distributed rollers are circumferentially sleeved and rotatably provided on each of the guide rings.

[0008] Furthermore, the cable hook is a three-section structure, including a vertical fixing section, a horizontal supporting section and a bending blocking section connected in sequence, and the top of the vertical fixing section of the cable hook is fixedly connected to the tunnel roof.

[0009] Furthermore, the lower parts of the horizontal supporting section, the bending blocking section and the vertical fixing section of the cable hook are all sleeved with rotatable sleeves.

[0010] Furthermore, the line inlet end of the suspended slideway of the crusher is fitted with the top cover of the crusher and the cover is provided with a clamping hoop plate, and the clamping hoop plate is fixedly connected to the top cover of the crusher by U-shaped bolts.

[0011] Furthermore, a first clamp is provided on the crusher adjacent to the line inlet end of the crusher suspended slide, the lower hoop plate of the first clamp is fixedly connected to the top cover of the crusher by bolts, one side of the upper hoop plate of the first clamp is rotatably connected to the corresponding side wall of the lower hoop plate by a hinge, and a cable clamping device is fixed on the first clamp.

[0012] Furthermore, the cable clamping device is a clamping handle fixed on the top surface of the upper hoop plate of the first clamp.

[0013] Furthermore, the cable clamping device is a lock buckle, and the upper hoop plate of the first clamp is connected to the lower hoop plate of the first clamp via the lock buckle.

[0014] Furthermore, a cable frame is fixed on the top plate of the continuous miner adjacent to the outlet end of the suspended slide of the continuous miner, a second clamp is fixed on the bottom plate in the cable frame, a lower hoop plate of the second clamp is fixed to the bottom plate of the cable frame by bolts, the power cable is clamped between the upper hoop plate and the lower hoop plate of the second clamp, and the upper hoop plate and the lower hoop plate of the second clamp are fixedly connected by bolts.

[0015] The advantages of the present invention are as follows: through the present invention, the power cable of the continuous miner is passed through the suspended slide of the crusher, and after being erected on the cable hook, it is sent from the suspended slide of the continuous miner to the line inlet cavity of the continuous miner, which effectively avoids the power cable from falling to the ground, eliminates the possibility of the power cable being scratched by iron and sharp objects, avoids the risk of electric shock caused by leakage of the power cable, and greatly improves the power supply safety of the continuous miner; through the present invention, the power cable can be moved along the suspended slide of the crusher, the cable hook and the suspended slide of the continuous miner to achieve random and automatic retraction and release, and only one person is needed for auxiliary supervision, which significantly reduces the intensity of manual labor and greatly reduces the risks of high-altitude operations, personnel falling and personnel being hit when retracting and releasing the power cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of Example 1.

[0017] Figure 2 This is a schematic diagram of the connection structure between the clamping hoop plate and the crusher suspended slideway described in Example 1.

[0018] Figure 3 for Figure 2 Left view of .

[0019] Figure 4 This is a schematic structural diagram of a cable hook provided with a sleeve according to Example 1.

[0020] Figure 5 This is a schematic diagram of the structure of the first clamp in Example 1.

[0021] Figure 6 for Figure 5 Left view of .

[0022] Figure 7 This is a schematic diagram of the structure of the second clamp in Example 1.

[0023] Figure 8 It is a schematic diagram of the use status of Example 1 when the continuous miner enters the head of excavation.

[0024] Fig. 9It is a schematic diagram of the usage status of Example 1 when the continuous miner enters the head-on excavation and cutting period.

[0025] Fig.10 It is a schematic diagram of the use status of Example 1 during the continuous miner withdrawal period.

[0026] Fig.11 This is a schematic diagram of the structure of the first clamp in Example 2.

[0027] The markings of the components in the accompanying drawings are as follows: crusher suspended slide 1, cable hook 2, continuous miner suspended slide 3, crusher 4, continuous miner 5, connecting mechanism 6, base 6.1, lifting cylinder 6.2, support rod 6.3, power cable 7, connecting piece 8, guide ring 9, roller 10, sleeve 11, clamping hoop 12, U-shaped bolt 13, first clamp 14, hinge 15, cable clamping device 16, cable frame 17, second clamp 18, limit pin 19, limit plate 20, tunnel top plate 21. DETAILED DESCRIPTION

[0028] Example 1: Figures 1 to 7 As shown, a continuous mining machine power cable retracting and releasing device comprises a crusher suspended slide 1, a cable hook 2 and a continuous mining machine suspended slide 3; a crusher suspended slide 1 with an outlet end bent upward toward the continuous mining machine 5 is fixed on the top cover of the crusher 4, the inlet end of the crusher suspended slide 1 is in contact with the top cover of the crusher 4 and the cover is provided with a clamping hoop plate 12, and the clamping hoop plate 12 is fixedly connected to the top cover of the crusher 4 by a U-shaped bolt 13, so as to facilitate the disassembly and assembly of the crusher suspended slide 1; a first clamp 14 is provided on the crusher 4 adjacent to the inlet end of the crusher suspended slide 1, and the lower hoop plate of the first clamp 14 is fixedly connected to the top cover of the crusher 4 by bolts One side of the upper hoop plate of the first clamp 14 is rotatably connected to the corresponding side wall of the lower hoop plate through a hinge 15, and a cable clamping device 16 is fixed on the first clamp 14, and the cable clamping device 16 is a clamping handle fixed on the top surface of the upper hoop plate of the first clamp 14; during the continuous mining machine 5 moving forward towards the excavation, the clamping handle is pressed downward to put the first clamp 14 in a clamped state; and during the excavation operation of the continuous mining machine 5, the clamping handle is released so that the first clamp 14 on the crusher 4 is always kept in a relaxed state, and under the traction of the continuous mining machine 5, the power cable 7 is pulled in from the first clamp 14 to increase the length of the power cable 7 from the crusher 4 to the excavation working face.

[0029] The top plate of the continuous miner 5 is fixed with a continuous miner suspended slide 3 placed above the continuous miner 5 through a connecting mechanism 6, and the high end of the continuous miner suspended slide 3 is bent upward toward the crusher 4; the crusher suspended slide 1 and the continuous miner suspended slide 3 are both hollow tubes, and guide rings 9 are coaxially fixed to the two end ports of the crusher suspended slide 1 and the two end ports of the continuous miner suspended slide 3 through connecting members 8, and more than three evenly distributed rollers 10 are rotatably arranged on each guide ring 9 along the circumferential direction, and the connecting member 8 includes a plurality of partitions evenly arranged along the circumference of the guide ring 9, and each partition and each roller 10 are alternately arranged; it is ensured that the power cable 7 inserted into the crusher suspended slide 1 and the continuous miner suspended slide 3 rolls in contact with the roller 10 when it moves randomly, thereby reducing friction and improving operation efficiency.

[0030] A plurality of cable hooks 2 are fixed on the tunnel roof 21 between the crusher 4 and the continuous miner 5. Each cable hook 2 is fixed at the exposed end of the support anchor rod along the center line of the tunnel. The lower parts of the horizontal support section, the bending blocking section and the vertical fixed section of the cable hook 2 are all sleeved with a rotatable sleeve 11. In this embodiment, the cable hook 2 is a three-section structure, including a vertical fixed section, a horizontal support section and a bending blocking section connected in sequence. The top of the vertical fixed section is fixedly connected to the exposed end of the support anchor rod on the tunnel roof 21. The horizontal support section is used to support the placement of the power cable 7, and the bending blocking section is used to prevent the power cable 7 from falling out of the cable hook 2 during movement; ensure that the power cable 7 placed on the cable hook 2 is in rolling contact with the sleeve 11 when it moves randomly, thereby reducing friction; and fix a limit plate 20 on the cable hook 2 adjacent to both ends of each sleeve 11 to prevent the sleeve 11 from moving.

[0031] The connecting mechanism 6 includes a base 6.1, a lifting cylinder 6.2 and a support rod 6.3; the base 6.1 is horizontally rotatably connected to the top plate of the continuous miner 5. In this embodiment, the base 6.1 is rotatably connected to the top plate of the continuous miner 5 through a bearing, and a limit pin 19 is penetrated on the base 6.1. A plurality of holes are opened in the circumferential direction on the top plate of the continuous miner 5 directly below the base 6.1. When the base 6.1 rotates to a certain position, the limit pin 19 can be inserted into the corresponding hole, thereby limiting the base 6.1; the two ends of the support rod 6.3 are respectively hinged to the lower end of the suspended slideway 3 of the continuous miner and the base 6.1, and the cylinder end of the lifting cylinder 6.2 is hinged to the bottom of the base 6.1. The base 6.1 of the connecting mechanism 6 is hinged to the base 6.1, and the telescopic rod end of the lifting cylinder 6.2 is hinged to the high end of the suspended slide 3 of the continuous mining machine; the continuous mining machine 5 will fluctuate up and down and left and right when running in different areas, which may easily cause serious bending of the power cable 7 between the cable hook 2 and the suspended slide 3 of the continuous mining machine, thereby affecting the random movement efficiency of the power cable 7. The present invention adjusts the left and right position of the suspended slide 3 of the continuous mining machine by rotating the base 6.1 of the connecting mechanism 6, and adjusts the up and down position of the high end of the suspended slide 3 of the continuous mining machine by controlling the extension and retraction of the lifting cylinder 6.2, thereby ensuring a smooth transition of the power cable 7 from the cable hook 2 to the suspended slide 3 of the continuous mining machine.

[0032] A cable frame 17 is fixed on the top plate of the continuous mining machine 5 near the outlet end of the suspended slide 3 of the continuous mining machine, and a second clamp 18 is fixed on the bottom plate in the cable frame 17. The lower hoop plate of the second clamp 18 is fixed to the bottom plate of the cable frame 17 by bolts, and the upper hoop plate and the lower hoop plate of the second clamp 18 clamp the power cable 7. The upper hoop plate and the lower hoop plate of the second clamp 18 are fixedly connected by bolts, and the power cable 7 before entering the inlet cavity of the continuous mining machine 5 is fixed by the second clamp 18 to prevent the power cable 7 connector in the inlet cavity of the continuous mining machine 5 from being pulled off during the movement of the continuous mining machine 5; the cable frame 17 is used to coil a part of the power cable 7. During the period when the continuous mining machine 5 enters the excavation head, the power cable 7 will enter from the lower end of the suspended slide 3 of the continuous mining machine, and be output from the high end of the suspended slide 3 of the continuous mining machine, and automatically fall into the hook groove of the cable hook 2.

[0033] A large number of power cables 7 of the continuous mining machine 5 are stored outside the crusher 4. The power cables 7 pass through the first clamp 14 and the crusher suspended slide 1 in sequence, are laid in the cable hook 2, and then pass through the continuous mining machine suspended slide 3. After a part of the power cables 7 is coiled in the cable frame 17, they pass through the second clamp 18 and pass through the bell mouth of the inlet cavity of the continuous mining machine 5 to enter the wiring cavity; the maximum coiling volume in the cable frame 17 meets the needs of the continuous mining machine 5 during the period of entering the excavation head, which is generally not more than 80 meters; drive The cable clamping device 16 on the dynamic clamping hoop 12 makes the upper hoop of the clamping hoop 12 clamp the power cable 7 against the lower hoop. When the continuous mining machine 5 moves forward to the excavation, it enters from the lower end of the continuous mining machine suspended slide 3, and is output from the high end of the continuous mining machine suspended slide 3, and automatically falls into the hook groove of the cable hook 2; when the continuous mining machine 5 is in the excavation operation, under the traction of the continuous mining machine 5, the power cable 7 is pulled in from the first clamp 14 to increase the length of the power cable 7 from the crusher 4 to the excavation working face.

[0034] Through the present invention, the power cable 7 of the continuous miner 5 is passed through the crusher suspended slide 1, erected on the cable hook 2, and then sent from the continuous miner suspended slide 3 to the line inlet cavity of the continuous miner 5, which effectively avoids the power cable 7 from falling to the ground, eliminates the possibility of the power cable 7 being scratched by iron and sharp objects, avoids the risk of electric shock caused by leakage of the power cable 7, and greatly improves the power supply safety of the continuous miner 5; through the present invention, the power cable 7 can be moved along the crusher suspended slide 1, the cable hook 2 and the continuous miner suspended slide 3 to achieve random and automatic retraction and release, and only one person is needed for auxiliary supervision, which significantly reduces the intensity of manual labor and greatly reduces the risks of high-altitude operations, personnel falling, and personnel being hit when retracting and releasing the power cable 7.

[0035] Working principle: Figure 8As shown, during the period when the continuous mining machine 5 enters the heading of the excavation along the center direction of the tunnel, one person is arranged on the continuous mining machine 5 to monitor the laying of the power cable 7, and fine-tune the left and right direction of the inlet end of the continuous mining machine's suspended slide 3 through the base 6.1 of the connecting mechanism 6, and adjust the up and down direction of the inlet end of the continuous mining machine's suspended slide 3 through the lifting cylinder 6.2; as the continuous mining machine 5 continues to move toward the heading of the excavation, the power cable 7 will enter from the lower end of the continuous mining machine's suspended slide 3, output from the high end of the continuous mining machine's suspended slide 3, and automatically fall into the hook groove of the cable hook 2; during the monitoring period, pay attention to straighten the power cable 7 in the cable frame 17 to ensure that the power cable 7 does not cross, so as to avoid affecting the smooth entry of the power cable 7 from the lower end of the continuous mining machine's suspended slide 3; during the period when the continuous mining machine 5 moves toward the heading of the excavation, the first clamp 14 on the crusher 4 is always kept in a tightened state through the cable clamping device 16.

[0036] like Fig. 9 As shown, when the continuous miner 5 enters the excavation and cutting period, the cable clamping device 16 is loosened to keep the first clamp 14 on the crusher 4 in a relaxed state. As the continuous miner 5 continues to move forward slowly during the excavation process, when the power cable 7 in the cable frame 17 is insufficient, the power cable 7 rolls along the crusher suspended slide 1, the cable hook 2 and the continuous miner suspended slide 3 under the traction of the continuous miner 5, and a part of the power cable 7 is pulled in from the first clamp 14 on the crusher 4, slowly and continuously making up for the shortage of the power cable 7 between the crusher 4 and the continuous miner 5.

[0037] like Fig.10 As shown, during the retreat of the continuous mining machine 5, one person is arranged on the continuous mining machine 5 to monitor the recovery of the power cable 7. The power cable 7 enters from the high end of the continuous mining machine suspended slide 3 and is then sent out from the low end of the continuous mining machine suspended slide 3. The monitoring personnel simply guides the power cable 7 and can smoothly coil the power cable 7 into the cable frame 17.

[0038] Example 2: Figures 1 to 4 , 7 to 11, a power cable retracting and releasing device for a continuous mining machine, whose overall structure is basically the same as that of Example 1, except that the cable clamping device 16 is a lock buckle, and the upper hoop plate of the first clamp 14 is connected to the lower hoop plate of the first clamp 14 through the lock buckle; during the continuous mining machine 5 moving forward toward the excavation, the power cable 7 is locked between the upper hoop plate and the lower hoop plate of the first clamp 14 by the lock buckle, and no manual pressing is required, thereby reducing labor intensity; and during the excavation operation of the continuous mining machine 5, the lock buckle is loosened so that the first clamp 14 on the crusher 4 is always kept in a relaxed state, and under the traction of the continuous mining machine 5, the power cable 7 is pulled in from the first clamp 14 to increase the length of the power cable 7 from the crusher 4 to the excavation working face.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuous mining machine power cable retracting device, characterized in that: It comprises a crusher suspended slide, a cable hook and a continuous miner suspended slide; the crusher suspended slide with the outlet end bent upward toward the continuous miner is fixed on the top cover of the crusher, the continuous miner suspended slide placed above the continuous miner is fixed on the top plate of the continuous miner through a connecting mechanism, and the high end of the continuous miner suspended slide is bent upward toward the crusher; a plurality of cable hooks arranged in a row are fixed on the top plate of the tunnel between the crusher and the continuous miner, and the power cable passes through the crusher suspended slide, the cable hook and the continuous miner suspended slide in sequence; The inlet end of the suspended slideway of the crusher is in contact with the top cover of the crusher and the cover is provided with a clamping hoop plate, and the clamping hoop plate is fixedly connected to the top cover of the crusher by U-shaped bolts; A first clamp is provided on the crusher adjacent to the inlet end of the suspended slideway of the crusher, the lower hoop plate of the first clamp is fixedly connected to the top cover of the crusher by bolts, one side of the upper hoop plate of the first clamp is rotatably connected to the corresponding side wall of the lower hoop plate by a hinge, and a cable clamping device is fixed on the first clamp; The connecting mechanism includes a base, a lifting cylinder and a support rod; the base is horizontally rotatably connected to the top plate of the continuous miner, the two ends of the support rod are respectively hinged to the lower end of the suspended slideway of the continuous miner and the base, the cylinder end of the lifting cylinder is hinged to the base, and the telescopic rod end of the lifting cylinder is hinged to the high end of the suspended slideway of the continuous miner; The crusher suspended slide and the continuous miner suspended slide are both hollow tubes, and guide rings are coaxially fixed to the two end ports of the crusher suspended slide and the two end ports of the continuous miner suspended slide through connecting parts, and more than three evenly distributed rollers are circumferentially sleeved and rotatably arranged on each guide ring.

2. A continuous mining machine power cable retracting and releasing device according to claim 1, characterized in that: The cable hook is a three-section structure, including a vertical fixing section, a horizontal supporting section and a bending blocking section which are connected in sequence. The top of the vertical fixing section of the cable hook is fixedly connected to the tunnel roof.

3. A continuous mining machine power cable retracting and releasing device according to claim 2, characterized in that: The lower parts of the horizontal supporting section, the bending blocking section and the vertical fixing section of the cable hook are all sleeved with rotatably arranged sleeves.

4. The continuous mining machine power cable retracting and releasing device according to claim 1, characterized in that: The cable clamping device is a clamping handle fixed on the top surface of the upper hoop plate of the first clamp.

5. The continuous mining machine power cable retracting and releasing device according to claim 1, characterized in that: The cable clamping device is a lock buckle, and the upper hoop plate of the first clamp is connected to the lower hoop plate of the first clamp via the lock buckle.

6. The continuous mining machine power cable retracting and releasing device according to claim 1, characterized in that: A cable frame is fixed on the top plate of the continuous miner adjacent to the outlet end of the suspended slideway of the continuous miner, a second clamp is fixed on the bottom plate in the cable frame, a lower hoop plate of the second clamp is fixed to the bottom plate of the cable frame by bolts, the power cable is clamped between the upper hoop plate and the lower hoop plate of the second clamp, and the upper hoop plate and the lower hoop plate of the second clamp are fixedly connected by bolts.

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