A highly protective coal mining machine towing cable device

Abstract

The present application discloses a highly protective coal mining machine cable towing device, which relates to the technical field of coal mining machines, and includes a support plate, a right-angle connecting plate assembly, a support assembly and a cable clamp. The right-angle connecting plate assembly includes a first straight plate, a second straight plate, a connecting plate, a sliding shaft, a transmission component and a limiting component. The two ends of the first straight plate are connected to the support plate and the second straight plate, and the second straight plate is connected to the supporting assembly. A slide groove is provided in the first straight plate, and the sliding shaft is slidably arranged in the slide groove. The two ends of the connecting plate are connected to the second straight plate and the sliding shaft, and the transmission component and the limiting component are arranged in the first straight plate. In the right-angle connecting plate assembly of the present application, during the rotation of the first straight plate, the sliding shaft drives the second straight plate to rotate through the connecting plate, and the horizontal offset distance of the rotation connection between the second straight plate and the supporting assembly is smaller, which reduces the bending degree of the supporting assembly, thereby greatly improving the service life of the coal mining machine cable towing device.

Description

Technical Field

[0001] The present application relates to the technical field of coal mining machines, and in particular to a highly protective coal mining machine towing cable device. Background Art

[0002] During the operation of the coal mining machine, power supply cables and cooling water pipes are required to provide power and cool the machine to reduce dust. Both the power supply cables and cooling water pipes are located in the cable clamp. The function of the shearer cable towing device is to drag the cable clamp back and forth in the cable trough while the coal mining machine is towing forward. When the shearer drives the cable clamp to move back and forth through the cable towing device, the cable clamp will overlap two to three layers, causing the cable clamp to interfere with the cable towing device, thereby squeezing and damaging the cable and water pipe.

[0003] At present, referring to the patent document with patent number CN102785962A, the towing cable device includes a towing plate, a right-angle connecting plate assembly, a support assembly and a cable clamp, the right-angle connecting plate assembly includes a right-angle connecting plate, a connecting rod, and the first and second pin shaft assemblies arranged at both ends of the right-angle connecting plate, the right-angle connecting plate is connected to the towing plate and the support assembly through the first and second pin shaft assemblies respectively, and the support assembly includes a connecting plate, a pin shaft, a pin, a washer and three chain plates. The right-angle connecting plate can be rotated 90° counterclockwise around the first pin shaft, so that the height space of the towing cable can be increased, thereby reducing the loss of cables and water pipes due to the bending of the cable clamp.

[0004] When the right-angle connecting plate rotates around the first pin shaft, the right-angle connecting plate will drive the second pin shaft to rotate with the first pin shaft as the center. At this time, the position of the second pin shaft in the horizontal direction is offset and is located diagonally above the cable clamp, causing the support assembly to bend. Especially when the right-angle connecting plate rotates 45°, the offset distance of the second pin shaft is the largest, and the bending angle of the support assembly is the largest. In the long run, the support assembly is prone to damage, reducing the service life of the coal mining machine towing cable device. Summary of the invention

[0005] In order to increase the service life of a coal mining machine towing cable device, the present application provides a high-protection coal mining machine towing cable device.

[0006] The application provides a highly protective coal mining machine towing cable device that adopts the following technical solution:

[0007] A high-protection coal mining machine towing cable device comprises a supporting plate, a right-angle connecting plate assembly, a supporting assembly and a cable clamp, the supporting assembly is connected to the cable clamp, the right-angle connecting plate assembly comprises a first straight plate, a second straight plate, a connecting plate, a sliding shaft, a transmission component and a limiting component, one end of the first straight plate is rotatably connected to the supporting plate, and the other end is rotatably connected to the second straight plate, the first straight plate and the second straight plate have the same length, the end of the second straight plate away from the first straight plate is rotatably connected to the supporting assembly, a sliding groove is provided in the first straight plate along its own length direction, the sliding shaft is slidably arranged in the sliding groove, one end of the connecting plate is rotatably connected to the middle of the side wall of the second straight plate close to the first straight plate, and the other end is rotatably connected to the supporting plate. One end is rotatably connected with the sliding shaft, the transmission component is arranged in the first straight plate and is transmission-connected with the sliding shaft, the limiting component is arranged in the first straight plate at one end of the slide groove close to the second straight plate and is used to limit the sliding shaft, when the first straight plate is in the horizontal and vertical states, the sliding shaft is located at one end of the slide groove close to the second straight plate, the limiting components limit the sliding shaft, and the second straight plate is perpendicular to the first straight plate, when the first straight plate is rotated upward by 45° from the horizontal state, the transmission component drives the sliding shaft to move to one end of the slide groove close to the support plate, the sliding shaft drives the second straight plate to rotate through the connecting plate, and the rotation connection between the second straight plate and the supporting assembly is located directly above the cable clamp.

[0008] By adopting the above technical solution, when the first straight plate is in a horizontal state, the second straight plate is in a vertical state and perpendicular to the first straight plate. When the cable clamps are stacked, the first straight plate rotates 90 degrees counterclockwise to a vertical state, and the second straight plate is in a horizontal state and perpendicular to the first straight plate, so that the height space of the towing cable can be increased. During the rotation process of 0-45°, the first straight plate drives the sliding shaft in the sliding groove toward the direction close to the support plate through the transmission component, and the sliding shaft drives the second straight plate to rotate clockwise through the connecting plate. During the rotation process of 45-90°, the first straight plate drives the sliding shaft in the sliding groove toward the direction away from the support plate through the transmission component, and the sliding shaft drives the second straight plate to rotate counterclockwise through the connecting plate, so that during the rotation of the first straight plate, the horizontal offset distance of the rotation connection between the second straight plate and the support assembly is smaller, reducing the bending degree of the support assembly, thereby greatly improving the service life of the coal mining machine towing cable device.

[0009] Preferably, the transmission component includes a first gear, a second gear, a crankshaft and a connecting rod, the first gear is fixedly arranged in a support plate, the second gear is rotatably arranged in a first straight plate and meshes with the first gear, the diameter ratio of the first gear to the second gear is 4:1, the crankshaft is rotatably arranged in the first straight plate, the second gear is coaxially fixed on the rotating shaft of the crankshaft, and the two ends of the connecting rod are respectively connected to the crankshaft and the sliding shaft.

[0010] By adopting the above technical solution, when the first straight plate rotates at 0-45°, the first straight plate drives the second gear to rotate 1 / 8 of a circle on the first gear, the second gear rotates 1 / 2 of a circle along its own axis, the second gear drives the crankshaft to rotate 1 / 2 of a circle, and the crankshaft drives the sliding shaft to move to the end of the slide groove close to the support plate through the connecting rod. When the first straight plate rotates at 45-90°, the first straight plate drives the second gear to rotate 1 / 8 of a circle on the first gear, the second gear rotates 1 / 2 of a circle along its own axis, the second gear drives the crankshaft to rotate 1 / 2 of a circle, and the crankshaft drives the sliding shaft to move to the end of the slide groove away from the support plate through the connecting rod, so that the sliding shaft can move back and forth in the slide groove during the process of the first straight plate rotating 90°.

[0011] Preferably, guide grooves are provided on the two side walls of the slide groove in the first straight plate, and guide blocks are fixedly provided at both ends of the sliding shaft. The guide blocks are slidably provided in the guide grooves along the length direction of the first straight plate. The limiting component includes a first elastic member and an insert block, and the insert block is slidably provided in the first straight plate along the moving direction of the guide block perpendicular to the guide block. The first elastic member is provided in the first straight plate and is located at one end of the insert block, and the end of the insert block away from the first elastic member extends into the guide groove and is located at an end of the guide groove close to the second straight plate. A first inclined wall is formed on the side of the end of the insert block close to the support plate, and a second inclined wall is formed on the side of the end of the insert block away from the support plate. A slot is provided on the guide block, and the end of the insert block is adapted to be inserted into the slot.

[0012] By adopting the above technical scheme, when the first straight plate is in a horizontal state, the sliding shaft is located at one end of the sliding groove close to the second straight plate, and the first elastic member pushes the plug block to be inserted tightly in the slot of the guide block, thereby limiting the sliding shaft; when the first straight plate starts to rotate from the horizontal direction, the sliding shaft drives the guide block to move toward the direction close to the support plate, and under the action of the second inclined wall, the plug block moves and disengages from the guide block, so that the sliding shaft can move automatically; when the first straight plate is rotated to a vertical state, the sliding shaft drives the guide block to move to a side close to the second straight plate, and under the action of the first inclined wall, the plug block moves into the slot, and the first elastic member pushes the plug block to be inserted tightly in the slot, thereby limiting the sliding shaft, so that the second straight plate is perpendicular to the first straight plate.

[0013] Preferably, a third inclined wall is formed at one end of the guide block close to the second straight plate, the inclination angle of the third inclined wall is the same as the inclination of the first inclined wall, and the guide block is rotatably provided with a plurality of rotating wheels on the third inclined wall.

[0014] By adopting the above technical solution, when the insert block is inserted into the slot under the action of the first inclined wall, the first inclined wall moves on the rotating wheel of the third inclined wall, and the rotating wheel reduces the friction between the insert block and the guide block, thereby facilitating the insert block to enter the slot.

[0015] Preferably, the guide block is located on one side of the guide groove close to the second straight plate and forms a fourth inclined wall, the inclination of the fourth inclined wall is the same as the inclination of the second inclined wall, and the fourth inclined wall and the second inclined wall are both friction walls, and when the plug block is inserted into the slot, the second inclined wall abuts against the fourth inclined wall.

[0016] By adopting the above technical solution, when the plug block is inserted into the slot, the second inclined wall abuts against the fourth inclined wall, and the fourth inclined wall and the second inclined wall are both friction walls, which increases the friction between the plug block and the guide block, making it difficult for the plug block to slip out of the guide block, thereby increasing the limiting stability of the limiting component.

[0017] Preferably, along the length direction of the first straight plate, the inclination of the first inclined wall is smaller than the inclination of the second inclined wall.

[0018] By adopting the above technical solution, the inclination of the first inclined wall is smaller than that of the second inclined wall. On the one hand, it is convenient for the plug block to move into the slot, and on the other hand, it is difficult for the plug block to slip out of the guide block.

[0019] Preferably, a clamping block is fixedly provided on the top wall of the first straight plate, a clamping slot is provided on the top wall of the support plate, and a clamping assembly is provided inside the support plate. When the first straight plate is rotated to a vertical state, the clamping block moves into the clamping slot, and the clamping assembly clamps the clamping block and limits it in the clamping slot.

[0020] By adopting the above technical solution, when the first straight plate is rotated 90° and the height space of the towing cable is increased, the first straight plate drives the clamping block to move into the clamping slot of the support plate, and the clamping assembly clamps the clamping block in the clamping slot, thereby limiting the first straight plate, making it difficult for the first straight plate to rotate again, thereby improving the stability of the right-angle connecting plate assembly after rotation.

[0021] Preferably, the clamping assembly includes a trigger rod, a first elastic reset member, two first push rods, a second push rod, a third push rod, a limiting sleeve, a second elastic member, a push plate, and a second elastic reset member, the trigger rod is slidably mounted in the support plate along the vertical direction, the first elastic reset member is arranged in the support plate, the top end of the first elastic reset member abuts against the bottom end of the trigger rod and is used to push the top end of the trigger rod to extend into the clamping groove, the two first push rods are slidably mounted in the support plate along the horizontal direction, wedge-shaped push grooves are provided on the opposite side walls of the trigger rod, the ends of the two first push rods close to each other are respectively inserted into the two wedge-shaped push grooves, the two second push rods are both slidably mounted in the support plate along the vertical direction, the two third push rods are both slidably mounted in the support plate along the horizontal direction, the bottom end of the second push rod is wedge-shaped and abuts against the two first push rods The two cams are connected by a threaded connection to the two third push rods, and the two cams are connected by a threaded connection to the two third push rods.

[0022] By adopting the above technical solution, when the blocking block has not entered the blocking slot, the first elastic reset member pushes the trigger rod to move upward, and the two second elastic reset members drive the two third push rods to move away from each other through the push plate, and the two third push rods drive the two limit sleeves to move into the support plate. When the blocking block enters the blocking slot, the blocking block pushes the trigger rod to move downward, and the trigger rod drives the two limit sleeves to move into the blocking slot through the first push rod, the second push rod and the third push rod, and the first chamfers of the two limit sleeves move to press against the two second chamfers of the blocking block, thereby limiting the first straight plate.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By using the right-angle connecting plate assembly, the first straight plate drives the sliding shaft to move in the sliding groove toward the supporting plate through the transmission component during the rotation process of 0-45°, and the sliding shaft drives the second straight plate to rotate clockwise through the connecting plate. The first straight plate drives the sliding shaft in the sliding groove away from the supporting plate through the transmission component during the rotation process of 45-90°, and the sliding shaft drives the second straight plate to rotate counterclockwise through the connecting plate, so that during the rotation process of the first straight plate, the horizontal offset distance of the rotating connection between the second straight plate and the supporting assembly is smaller, reducing the bending degree of the supporting assembly, thereby greatly improving the service life of the coal mining machine towing cable device;

[0025] 2. With the help of the rotating wheel, when the plug block is inserted into the slot under the action of the first inclined wall, the first inclined wall moves on the rotating wheel of the third inclined wall, and the rotating wheel reduces the friction between the plug block and the guide block, thereby facilitating the plug block to enter the slot;

[0026] 3. Through the clamping assembly, when the first straight plate rotates 90° and increases the height space of the towing cable, the first straight plate drives the clamping block to move into the clamping slot of the support plate, and the clamping assembly clamps the clamping block in the clamping slot, thereby limiting the first straight plate, making it difficult for the first straight plate to rotate again, thereby improving the stability of the right-angle connecting plate assembly after rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the coal mining machine cable device of the present application;

[0028] Figure 2 This is a partial structural cross-sectional view of the towing cable device for a coal mining machine in this application to highlight the limiting components;

[0029] Figure 3 The coal mining machine cable device for this application is an exploded view of part of the structure of the guide block to highlight the structure;

[0030] Figure 4 The coal mining machine cable device of this application is a schematic diagram to highlight the state of the first straight plate rotating 45°;

[0031] Figure 5 The coal mining machine cable device of this application is a schematic diagram to highlight the state of the first straight plate rotating 90°;

[0032] Figure 6 This is a partial structural cross-sectional view of the towing cable device of the coal mining machine of the present application;

[0033] Figure 7 For this application Figure 6 The enlarged schematic diagram at A in the middle;

[0034] Figure 8 For this application Figure 6 The enlarged schematic diagram of point B in the middle;

[0035] Fig. 9 A partial structural cross-sectional view of the towing cable device for a coal mining machine for this application is provided to highlight the clamping assembly;

[0036] Fig.10 This is a partial structural cross-sectional view of the coal mining machine cable device for this application to highlight the clamping block state of the clamping assembly;

[0037] Fig.11 For this application Fig.10 Enlarged schematic diagram at point C in the middle.

[0038] Figure numerals: 1, support plate; 2, cable clamp plate; 3, right-angle connecting plate assembly; 31, first straight plate; 32, second straight plate; 33, connecting plate; 34, sliding shaft; 35, transmission component; 351, first gear; 253, second gear; 353, crankshaft; 354, connecting rod; 36, limiting component; 361, first elastic member; 362, plug block; 4, supporting assembly; 41, supporting connecting plate; 42, fourth pin shaft; 43, chain plate; 5, slide groove; 6, guide groove; 7, guide block; 8, slot; 9, first inclined wall; 10, second inclined wall; 11, third inclined wall; 12 , fourth inclined wall; 13, rotating wheel; 14, clamping block; 15, roller; 16, clamping groove; 17, clamping assembly; 171, trigger rod; 172, first elastic return member; 173, first push rod; 174, second push rod; 175, third push rod; 176, limiting sleeve; 177, second elastic member; 178, push plate; 179, second elastic return member; 18, wedge-shaped push groove; 19, first chamfer; 20, second chamfer; 21, first pin shaft; 22, second pin shaft; 23, third pin shaft; 24, fifth pin shaft; 25, limiting block; 26, limiting groove; 27, accommodating groove. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-Figure 11 This application is described in further detail.

[0040] The embodiment of the present application discloses a highly protective coal mining machine towing cable device.

[0041] Reference Figure 1 A high-protection coal mining machine cable towing device comprises a support plate 1, a right-angle connecting plate assembly 3, a support assembly 4 and a cable clamp plate 2. The support plate 1 is fixedly mounted on the coal mining machine body by bolts, the right-angle connecting plate assembly 3 is rotatably mounted on the support plate 1, the support assembly 4 is rotatably mounted on one end of the right-angle connecting plate assembly 3 away from the support plate 1, and the cable clamp plate 2 is rotatably mounted on one end of the support assembly 4 away from the right-angle connecting plate assembly 3. During the movement of the coal mining machine body, the cable clamp plate 2 is dragged to move by the support plate 1, the right-angle connecting plate assembly 3 and the support assembly 4.

[0042] The support assembly 4 includes a supporting connecting plate 41, three fourth pins 42 and a chain plate 43. The supporting connecting plate 41 is rotatably installed on the end of the right-angle connecting plate away from the support plate 1 through the third pin 23 with the moving direction of the coal mining machine as the axis. The chain plate 43 is rotatably installed on the connecting plate through the fourth pin 42 with the vertical moving direction of the coal mining machine as the axis. The three connecting plates are rotatably connected in sequence through the two fourth pins 42. The cable clamp 2 is rotatably installed on the bottom end of the lowest chain plate 43 through the fifth pin 24 with the vertical moving direction of the coal mining machine as the axis.

[0043] Reference Figure 1 , Figure 2 and Figure 3 The right angle connecting plate assembly 3 includes a first straight plate 31, a second straight plate 32, a connecting plate 33, a sliding shaft 34, a transmission component 35 and a limiting component 36. The first straight plate 31 is rotatably mounted on the support plate 1 through the first pin shaft 21 with the moving direction of the coal mining machine as the axis, and the second straight plate 32 is rotatably mounted on the end of the first straight plate 31 away from the support plate 1 through the second pin shaft 22 with the moving direction of the coal mining machine as the axis. The third pin shaft 23 is mounted on the end of the second straight plate 32 away from the first straight plate 31. The first straight plate 31 and the second straight plate 32 have the same length, and the second straight plate 32 is perpendicular to the first straight plate 31.

[0044] A slide groove 5 is provided in the first straight plate 31 along its length direction, and guide grooves 6 are provided in the first straight plate 31 on opposite side walls in the width direction of the slide groove 5 along its length direction. Guide blocks 7 are fixedly installed at both ends of the sliding shaft 34, and the two guide blocks 7 are slidably installed in the two guide grooves 6 along the length direction of the first straight plate 31, so that the sliding shaft 34 can slide in the slide groove 5.

[0045] The middle of the second straight plate 32 is provided with a receiving groove 27. One end of the connecting plate 33 is rotatably mounted in the receiving groove 27 of the second straight plate 32 through a rotating shaft, and the other end is rotatably connected to the sliding shaft 34. The transmission component 35 is installed in the first straight plate 31 and is transmission-connected to the support plate 1 and the sliding shaft 34. When the first straight plate 31 rotates 90°, the transmission component 35 can drive the sliding shaft 34 to slide back and forth once in the sliding groove 5. The limiting component 36 is installed in the first straight plate 31. When the sliding shaft 34 moves to the sliding groove 5 close to one end of the second straight plate 32, the limiting component 36 limits the sliding shaft 34.

[0046] When the first straight plate 31 is in a horizontal state (refer to Figure 1 ), the second straight plate 32 is in a vertical state, at this time, the sliding shaft 34 is located at one end of the slide groove 5 close to the second straight plate 32. When the coal mining machine withdraws and causes the cable clamp 2 to bend and stack, the first straight plate 31 rotates counterclockwise, and during the rotation of the first straight plate 31, the transmission component 35 drives the sliding shaft 34 to slide in the slide groove 5.

[0047] During the rotation of the first straight plate 31 from 0 to 45 degrees, the transmission member 35 drives the sliding shaft 34 to move in the sliding groove toward the direction close to the support plate 1, and the sliding shaft 34 drives the second straight plate 32 to rotate clockwise through the connecting plate 33; when the first straight plate 31 rotates to 45 degrees (refer to Figure 4 ), the sliding shaft 34 moves to one end of the slide groove 5 close to the support plate 1, and the sliding shaft 34 drives the second straight plate 32 to rotate clockwise through the connecting plate 33, so that the third pin 23 is still located directly above the fifth pin 24; during the rotation of 45-90°, the first straight plate 31 drives the sliding shaft 34 to move away from the support plate 1 in the sliding groove through the transmission component 35, and the sliding shaft 34 drives the second straight plate 32 to rotate counterclockwise through the connecting plate 33.

[0048] When the first straight plate 31 is rotated to a vertical state (refer to Figure 5 ), the second straight plate 32 is in a horizontal state, which increases the height space of the towing cable. Similarly, when the coal mining machine moves so that the cable clamp plate 2 is not bent and stacked, the cable clamp plate 2 pulls the second straight plate 32 downward through the support assembly 4, so that the first straight plate 31 rotates 90° clockwise to a horizontal state, thereby reducing the height space of the towing cable. During the forward and reverse rotation of the first straight plate 31, the third pin 23 on the second straight plate 32 is offset in the horizontal direction by a smaller distance, which reduces the bending degree of the support assembly 4, thereby greatly improving the service life of the coal mining machine towing cable device.

[0049] Reference Figure 2 and Figure 3 The transmission component 35 includes a crankshaft 353, a connecting rod 354, two first gears 351 and a second gear 253. The crankshaft 353 is rotatably mounted in the first straight plate 31. One end of the connecting rod 354 is rotatably connected to the crankshaft 353, and the other end is rotatably connected to the sliding shaft 34. The two first gears 351 are fixedly mounted in the support plate 1, and the two second gears 253 are coaxially fixedly mounted on the rotating shaft of the crankshaft 353. The two second gears 253 are meshed with the two first gears 351, and the diameter ratio of the first gear 351 to the second gear 253 is 4:1.

[0050] When the first straight plate 31 rotates 90°, the first straight plate 31 drives the second tooth to rotate 1 / 4 circle on the first gear 351. The second gear 253 rotates one circle around the first gear 351. The second gear 253 drives the crankshaft 353 to rotate one circle. The crankshaft 353 drives the sliding shaft 34 to slide back and forth in the sliding groove 5 through the connecting rod 354, so that the first straight plate 31 can drive the sliding shaft 34 to move in the sliding groove 5 when it rotates.

[0051] Reference Figure 6 and Figure 7The limiting component 36 includes two first elastic members 361 and an insert block 362. The two insert blocks 362 are both slidably installed in the first straight plate 31 along the thickness direction of the first straight plate 31. The bottom ends of the two insert blocks 362 extend into the two guide grooves 6, and the insert blocks 362 are located at one end of the guide groove 6 close to the second straight plate 32. The two first elastic members 361 are installed in the first straight plate 31, and the top end of the first elastic member 361 abuts against the inner wall of the first straight plate 31, and the bottom end abuts against the top wall of the insert block 362. In the present application, the first elastic member 361 can be selected as a stack spring.

[0052] A slot 8 is provided on the top wall of the guide block 7, a first inclined wall 9 is formed on the side of the bottom end of the insert block 362 close to the support plate 1, a third inclined wall 11 is formed on the side of the guide block 7 close to the second straight plate 32, the inclination of the first inclined wall 9 is the same as the inclination of the third inclined wall 11, and the guide block 7 is located on the third inclined wall 11 and has a plurality of rollers 15 rotatably installed.

[0053] When the sliding shaft 34 slides in the sliding groove 5 toward the second straight plate 32, the sliding shaft 34 drives the guide block 7 to move toward the insert block 362. The first inclined wall 9 of the insert block 362 contacts the roller 15, reducing the friction between the insert block 362 and the guide block 7. As the guide block 7 continues to move, the guide block 7 gradually pushes the insert block 362 to move upward, and the insert block 362 squeezes the first elastic member 361 to deform.

[0054] When the guide block 7 moves to one end of the guide groove 6 close to the second straight plate 32, the first elastic member 361 releases its elastic potential energy and pushes the plug block 362 to move downward, and the bottom end of the plug block 362 is tightly inserted into the slot 8, thereby limiting the sliding shaft 34, so that when the first straight plate 31 rotates to a vertical state, the second straight plate 32 can maintain a horizontal state.

[0055] A second inclined wall 10 is formed on the side of the bottom end of the insert block 362 close to the second straight plate 32, and a fourth inclined wall 12 is formed on the side of the guide block 7 located in the slot 8 close to the second straight plate 32. The fourth inclined wall 12 and the second inclined wall 10 have the same inclination, and both the fourth inclined wall 12 and the second inclined wall 10 are friction walls. Along the length direction of the first straight plate 31, the inclination of the second inclined wall 10 is greater than the inclination of the first inclined wall 9. When the insert block 362 is inserted into the slot 8, the second inclined wall 10 presses against the fourth inclined wall 12, thereby increasing the static friction between the guide block 7 and the insert block 362, making it difficult for the guide block 7 to slide in the guide groove 6, thereby further improving the limiting effect of the limiting component 36, so that when the first straight plate 31 rotates to a vertical state, the second straight plate 32 can maintain a horizontal state.

[0056] During the movement of the coal mining machine, the pulling force of the support assembly 4 on the second straight plate 32 is not enough to overcome the static friction between the guide block 7 and the plug block 362. At this time, the plug block 362 will be inserted tightly into the guide block 7, making the guide block 7 unable to move. When the coal mining machine moves so that the cable clamp 2 is not bent and stacked, the cable clamp 2 pulls the second straight plate 32 downward through the support assembly 4. The pulling force of the support assembly 4 on the second straight plate 32 can overcome the static friction between the guide block 7 and the plug block 362. At this time, the guide block 7 slides in the guide groove 6, and the plug block 362 slips out of the slot 8 of the guide block 7.

[0057] Reference Figure 2 , Figure 6 and Figure 8 The first pin shaft 21 is fixed in the support plate 1 by a nut, and a limiting block 25 is fixedly installed on the side wall of the first pin shaft 21. An arc-shaped limiting groove 26 is provided in the first straight plate 31. The limiting groove 26 is provided 1 / 4 of a circle around the first pin shaft 21, and the limiting block 25 is slidably installed in the limiting groove 26. When the first straight plate 31 rotates, the first straight plate 31 drives the limiting groove 26 to rotate, and the limiting block 25 limits the rotation angle of the first straight plate 31 through the limiting groove 26, so that the rotation angle of the first straight plate 31 is between 0-90°.

[0058] Reference Figure 2 , Fig. 9 , Fig.10 and Fig.11 A slot 16 is provided on one side of the middle of the top wall of the support plate 1 near the first straight plate 31, a block 14 is fixedly mounted on the top wall of the first straight plate 31, and a clamping assembly 17 is installed in the support plate 1. When the first straight plate 31 rotates to a vertical state, the first straight plate 31 drives the block 14 to move into the slot 16, and the clamping assembly 17 limits the block 14, thereby limiting the first straight plate 31, so that when the height space of the towing cable is increased, the first straight plate 31 can remain in a vertical state.

[0059] The clamping assembly 17 includes a trigger rod 171, a first elastic reset member 172, two first push rods 173, a second push rod 174, a third push rod 175, a limit sleeve 176, a second elastic member 177, a push plate 178 and a second elastic reset member 179. The trigger rod 171 is slidably installed in the support plate 1 along the vertical direction, and the first elastic reset member 172 is installed in the support plate 1. The top end of the first elastic reset member 172 abuts against the bottom end of the trigger rod 171. In the present application, the first elastic reset member 172 can be selected as a spring, and the first elastic reset member 172 pushes the trigger rod 171 to move upward, so that the top end of the trigger rod 171 extends into the clamping slot 16.

[0060] Wedge-shaped push grooves 18 are provided on the opposite side walls of the trigger rod 171. Two first push rods 173 are slidably installed in the support plate 1 along the horizontal direction, and the ends of the two first push rods 173 close to each other are respectively inserted into the two wedge-shaped push grooves 18. Two second push rods 174 are slidably installed in the support plate 1 along the vertical direction, and the bottom ends of the second push rods 174 and the ends of the first push rods 173 away from the trigger rod 171 are both set to be wedge-shaped and abut against each other. Two third push rods 175 are slidably installed in the support plate 1 along the horizontal direction, and the top ends of the second push rods 174 and the ends of the third push rods 175 are both set to be wedge-shaped and abut against each other.

[0061] The two push plates 178 are fixedly mounted on the top walls of the two third push rods 175, the two second elastic reset members 179 are mounted in the support plate 1, and the ends of the two second elastic reset members 179 that are far away from each other respectively abut the two push plates 178. The two limit sleeves 176 are slidably mounted on the ends of the two third push rods 175 that are close to each other, the two second elastic members 177 are mounted in the two limit sleeves 176, and the two ends of the second elastic member 177 are respectively fixedly connected to the third push rod 175 and the limit sleeve 176. In the present application, the second elastic member 177 can be selected as a stacked spring, and the second elastic reset member 179 can be selected as a spring.

[0062] When the block 14 has not entered the slot 16, the first elastic reset member 172 pushes the top end of the trigger rod 171 to move into the slot 16, and the two second elastic reset members 179 push the two third push rods 175 to move away from each other through the push plate 178. The two third push rods 175 drive the two limit sleeves 176 to move into the support plate 1 through the second elastic member 177, so that the block 14 will not be blocked by the limit sleeve 176 when moving into the slot 16.

[0063] The bottom wall of the two limit sleeves 176 near one end is formed with a first chamfer 19, and the two ends of the side wall of the block 14 near the second straight plate 32 are formed with a second chamfer 20. When the first straight plate 31 rotates to a vertical state, the block 14 moves into the slot 16, and the block 14 presses the trigger rod 171 downward, so that the trigger rod 171 moves downward, and the trigger rod 171 squeezes the first elastic reset member 172. During the movement of the trigger rod 171, the two first push rods 173 are pushed to move away from each other through the wedge-shaped push groove 18, and the two first push rods 173 drive the two second push rods 174 to move upward, and the two second push rods 174 drive the two third push rods 175 to move towards each other, and the third push rod 175 drives the push rod to move and squeeze the second elastic reset member 179.

[0064] The third push rod 175 drives the two limiting sleeves 176 to move toward each other through the second elastic member 177, and the two limiting sleeves 176 move into the card slot 16, and the first chamfers 19 of the two limiting sleeves 176 abut against the two second chamfers 20 of the card block 14, so that the card block 14 can be limited (refer to Fig.10 ), thereby limiting the first straight plate 31, and the side wall of the limiting sleeve 176 located at the first chamfer 19 and the side wall of the clamping block 14 located at the second chamfer 20 are both friction walls.

[0065] During the movement of the coal mining machine, the pulling force of the support assembly 4 on the second straight plate 32 is not enough to overcome the static friction between the limit sleeve 176 and the block 14. At this time, the limit sleeve 176 will press against the block 14, making the block 14 unable to move. When the coal mining machine moves so that the cable clamp 2 is not bent and stacked, the cable clamp 2 pulls the second straight plate 32 downward through the support assembly 4. The pulling force of the support assembly 4 on the second straight plate 32 can overcome the static friction between the limit sleeve 176 and the block 14. At this time, the block 14 moves and pushes the two limit sleeves 176 to move away from each other, so that the block 14 is disengaged from the slot 16.

[0066] When the block 14 is disengaged from the card slot 16 (refer to Fig. 9 ), the first elastic reset member 172 pushes the trigger block to move upward, the second elastic reset member 179 pushes the two third push rods 175 to move away from each other through the push plate 178, the two third push rods 175 push the two second push rods 174 to move downward, and the two second push rods 174 push the two first push rods 173 to move toward each other, so that the ends of the two first push rods 173 that are close to each other are inserted into the two wedge-shaped push grooves 18 again, thereby facilitating the clamping assembly 17 to clamp the clamping block 14 again.

[0067] The implementation principle of a high-protection coal mining machine towing cable device in an embodiment of the present application is as follows: during the movement of the coal mining machine body, the cable clamp plate 2 is dragged to move in the cable trough by the support plate 1, the right-angle connecting plate assembly 3 and the support assembly 4. When the coal mining machine re-mining causes the cable clamp plate 2 to bend and stack, the first straight plate 31 rotates counterclockwise. During the rotation of the first straight plate 31, the transmission component 35 drives the sliding shaft 34 to slide in the sliding groove 5. During the rotation of the first straight plate 31 from 0 to 45°, the transmission component 35 drives the sliding shaft 34 to move in the sliding groove toward the direction close to the support plate 1, and the sliding shaft 34 drives the second straight plate 32 to rotate clockwise through the connecting plate 33; when the first straight plate 31 rotates to 45°, the sliding shaft 34 moves to the end of the sliding groove 5 close to the support plate 1, and the sliding shaft 34 drives the second straight plate 32 to rotate clockwise through the connecting plate 33, so that the third pin 23 is still located directly above the fifth pin 24; during the rotation of the first straight plate 31 from 45 to 90°, the transmission component 35 drives the sliding shaft 34 to move in the sliding groove away from the support plate 1, and the sliding shaft 34 drives the second straight plate 32 to rotate counterclockwise through the connecting plate 33. When the first straight plate 31 rotates to a vertical state, the second straight plate 32 is in a horizontal state, which increases the height space of the towing cable. Similarly, when the coal mining machine moves so that the cable clamp plate 2 is not bent and stacked, the cable clamp plate 2 pulls the second straight plate 32 downward through the support assembly 4, so that the first straight plate 31 rotates 90° clockwise to a horizontal state, thereby reducing the height space of the towing cable. During the forward and reverse rotation of the first straight plate 31, the third pin 23 on the second straight plate 32 is offset in the horizontal direction by a smaller distance, reducing the bending degree of the support assembly 4, thereby greatly improving the service life of the coal mining machine towing cable device.

[0068] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A highly protective coal mining machine cable device, comprising a support plate (1), a right-angle connecting plate assembly (3), a support assembly (4) and a cable clamp (2), wherein the support assembly (4) is connected to the cable clamp (2), characterized in that: The right-angle connecting plate assembly (3) comprises a first straight plate (31), a second straight plate (32), a connecting plate (33), a sliding shaft (34), a transmission component (35) and a limiting component (36). One end of the first straight plate (31) is rotatably connected to the supporting plate (1), and the other end is rotatably connected to the second straight plate (32). The first straight plate (31) and the second straight plate (32) have the same length. The end of the second straight plate (32) away from the first straight plate (31) is rotatably connected to the supporting assembly (4). A sliding groove (5) is provided in the first straight plate (31) along its length direction. The sliding shaft (34) is slidably arranged in the sliding groove (5). One end of the connecting plate (33) is rotatably connected to the middle part of the side wall of the second straight plate (32) close to the first straight plate (31), and the other end is rotatably connected to the sliding shaft (34). The transmission component (35) is arranged in the first straight plate (31) and is transmission-connected to the sliding shaft (34). The limiting component (36) ) is arranged in the sliding groove (5) of the first straight plate (31) near one end of the second straight plate (32) and is used to limit the sliding shaft (34). When the first straight plate (31) is in the horizontal state or the vertical state, the sliding shaft (34) is located at one end of the sliding groove (5) near the second straight plate (32). The limiting components (36) limit the sliding shaft (34). The second straight plate (32) is perpendicular to the first straight plate (31). When the first straight plate (31) is moved upward from the horizontal state, When rotating 45°, the transmission component (35) drives the sliding shaft (34) to move toward one end of the slide groove (5) close to the support plate (1), and the sliding shaft (34) drives the second straight plate (32) to rotate through the connecting plate (33). When the first straight plate (31) deflects upward to an angle of 45° with the horizontal, the sliding shaft (34) is located at one end of the slide groove (5) close to the support plate (1), and the rotation connection between the second straight plate (32) and the supporting assembly (4) is located directly above the cable clamp (2).

2. A highly protective shearer towing cable device according to claim 1, characterized in that: The transmission component (35) comprises a first gear (351), a second gear (253), a crankshaft (353) and a connecting rod (354); the first gear (351) is fixedly arranged in the support plate (1); the second gear (253) is rotatably arranged in the first straight plate (31) and meshes with the first gear (351); the diameter ratio of the first gear (351) to the second gear (253) is 4:1; the crankshaft (353) is rotatably arranged in the first straight plate (31); the second gear (253) is coaxially fixedly arranged on the rotating shaft of the crankshaft (353); and the two ends of the connecting rod (354) are respectively connected to the crankshaft (353) and the sliding shaft (34).

3. A highly protective coal mining machine towing cable device according to claim 1, characterized in that: Guide grooves (6) are provided on opposite side walls of the slide groove (5) in the first straight plate (31), guide blocks (7) are fixedly provided at both ends of the sliding shaft (34), the guide blocks (7) are slidably provided in the guide grooves (6) along the length direction of the first straight plate (31), the limiting component (36) comprises a first elastic member (361) and an inserting block (362), the inserting block (362) is slidably provided in the first straight plate (31) along the moving direction perpendicular to the guide block (7), the first elastic member (361) is provided on the first straight plate (31), and the guide blocks (362) are provided on the first straight plate (31). 1) and is located at one end of the plug block (362); one end of the plug block (362) away from the first elastic member (361) extends into the guide groove (6) and is located at one end of the guide groove (6) close to the second straight plate (32); a first inclined wall (9) is formed on the side of the end of the plug block (362) close to the support plate (1); a second inclined wall (10) is formed on the side of the end of the plug block (362) away from the support plate (1); a slot (8) is provided on the guide block (7), and the end of the plug block (362) is adapted to be inserted into the slot (8).

4. A highly protective coal mining machine towing cable device according to claim 3, characterized in that: A third inclined wall (11) is formed at one end of the guide block (7) close to the second straight plate (32); the inclination angle of the third inclined wall (11) is the same as the inclination of the first inclined wall (9); and the guide block (7) is rotatably provided with a plurality of rotating wheels (13) on the third inclined wall (11).

5. A highly protective shearer towing cable device according to claim 3, characterized in that: The guide block (7) is located on a side of the guide groove (6) close to the second straight plate (32) and is formed with a fourth inclined wall (12); the inclination of the fourth inclined wall (12) is the same as the inclination of the second inclined wall (10); and both the fourth inclined wall (12) and the second inclined wall (10) are friction walls; when the insert block (362) is inserted into the slot (8), the second inclined wall (10) abuts against the fourth inclined wall (12).

6. A highly protective shearer towing cable device according to claim 3, characterized in that: Along the length direction of the first straight plate (31), the inclination of the first inclined wall (9) is smaller than the inclination of the second inclined wall (10).

7. A highly protective shearer towing cable device according to claim 1, characterized in that: A clamping block (14) is fixedly arranged on the top wall of the first straight plate (31), a clamping slot (16) is opened on the top wall of the support plate (1), and a clamping assembly (17) is arranged in the support plate (1); when the first straight plate (31) is rotated to a vertical state, the clamping block (14) moves into the clamping slot (16), and the clamping assembly (17) clamps the clamping block (14) in the clamping slot (16).

8. A highly protective shearer towing cable device according to claim 7, characterized in that: The clamping assembly (17) comprises a trigger rod (171), a first elastic reset member (172), two first push rods (173), a second push rod (174), a third push rod (175), a limit sleeve (176), a second elastic member (177), a push plate (178) and a second elastic reset member (179); the trigger rod (171) is slidably mounted in the support plate (1) along a vertical direction; the first elastic reset member (172) is arranged in the support plate (1); the top end of the first elastic reset member (172) abuts against the bottom end of the trigger rod (171) and is used to push the top end of the trigger rod (171) The ends of the two first push rods (173) are inserted into the card slot (16), the two first push rods (173) are slidably arranged in the support plate (1) along the horizontal direction, the two opposite side walls of the trigger rod (171) are provided with wedge-shaped push grooves (18), the ends of the two first push rods (173) close to each other are respectively inserted into the two wedge-shaped push grooves (18), the two second push rods (174) are slidably installed in the support plate (1) along the vertical direction, the two third push rods (175) are slidably installed in the support plate (1) along the horizontal direction, and the bottom ends of the second push rods (174) are wedge-shaped and abut against the two first push rods (173) The top end of the second push rod (174) is wedge-shaped and abuts against the ends of the two third push rods (175) that are away from each other. The two push plates (178) are fixedly arranged on the two third push rods (175). The two second elastic reset members (179) are arranged in the support plate (1) and respectively abut against the side walls of the two push plates (178) that are close to each other. The two limit sleeves (176) are slidably sleeved on the ends of the two third push rods (175) that are close to each other. The two second elastic members (177) are arranged in the two limit sleeves (176) and abut against the ends of the two third push rods (175). The two limiting sleeves (176) are close to each other, and a first chamfer (19) is formed at the ends close to each other and located on a side close to the trigger rod (171). The two opposite side walls of the block (14) are both formed with second chamfers (20). When the block (14) enters the slot (16), the trigger rod (171) drives the two limiting sleeves (176) to move in a direction close to each other through the first push rod (173), the second push rod (174) and the third push rod (175). The first chamfers (19) of the two limiting sleeves (176) move and press against the two second chamfers (20) of the block (14).

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