Sliding mechanism of hydraulic support for coal mining

Abstract

The utility model discloses a pushing mechanism of a hydraulic support for coal mining, and relates to the technical field of hydraulic supports, including a hydraulic support base; a pushing jack is arranged on one side of the inner wall of the hydraulic support base; a pushing rod is arranged on one end of the outer wall of the pushing jack; the utility model is to put a square plate into a square groove on the hydraulic support base, and then rotate the connecting bolts to make the bolts rotate into the threaded grooves in the square grooves, so that the bolts fix the square plate in the square grooves; because one end of the outer wall of the pushing jack is fixedly connected to one side of the outer wall of the square plate, when the pushing jack and other mechanisms need to be maintained or serviced, the fixing of the square plate can be released by rotating the bolts, and the square plate, the pushing jack and other mechanisms can be taken out, so that the pushing jack and other mechanisms can be moved to an open space or a suitable position for maintenance and service, so that the staff can perform maintenance and service on the pushing jack and other mechanisms more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic supports, in particular to a pushing mechanism of a hydraulic support for coal mining. Background Art

[0002] Hydraulic support is one of the important equipment used in coal mining. It is mainly used to support the coal wall of coal mines, protect the life and health of workers and improve the efficiency of collecting coal blocks. The pushing mechanism is an important component of the hydraulic support, and its main function is to push the conveyor and pull the frame.

[0003] The pushing mechanism of the hydraulic support in the prior art is mostly welded on the base of the hydraulic support. Since the pushing mechanism of the hydraulic support is usually composed of many hydraulic components, it is prone to failure, so that the pushing mechanism of the hydraulic support needs regular maintenance and servicing, such as regular replacement of lubricating oil, inspection of seals, etc., and since the pushing mechanism of the hydraulic support is welded on the base of the hydraulic support and cannot be moved, and the circuits and components at the base of the hydraulic support are numerous and complex, it is inconvenient and troublesome for the staff to maintain and service the pushing mechanism of the hydraulic support.

[0004] In view of the above technical problems, this application proposes a solution. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the sliding mechanism of the hydraulic support in the prior art is mostly welded on the base of the hydraulic support. Since the sliding mechanism of the hydraulic support is usually composed of many hydraulic components, it is easy to fail, so that the sliding mechanism of the hydraulic support needs regular maintenance and servicing, such as regular replacement of lubricating oil, inspection of seals, etc., and since the sliding mechanism of the hydraulic support is welded on the base of the hydraulic support and cannot be moved, and the circuits and components at the base of the hydraulic support are numerous and complex, it is inconvenient and troublesome for the staff to maintain and service the sliding mechanism of the hydraulic support. Therefore, the sliding mechanism of the hydraulic support for coal mining is proposed.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] The pushing mechanism of the hydraulic support for coal mining comprises a hydraulic support base; a pushing jack is provided on one side of the inner wall of the hydraulic support base; a pushing rod is provided on one end of the outer wall of the pushing jack; a connecting head is provided on one end of the outer wall of the pushing rod through a pin shaft; a square groove is provided on one side of the inner wall of the hydraulic support base; a square plate is slidably placed on the inner wall of the square groove; one end of the outer wall of the pushing jack is fixedly connected to one side of the outer wall of the square plate; a group of threaded grooves is provided on the inner wall of the square groove; a group of bolts are threadedly connected to one side of the outer wall of the square plate, and one end of the outer wall of a group of bolts passes through the square plate, and a group of bolts matches a group of threaded grooves.

[0008] Preferably, a square block is fixedly connected to one end of the outer wall of the output end of the push jack; a first square groove is opened at one end of the outer wall of the push rod, and the first square groove matches the square block; a positioning groove is opened at the top of the outer wall of the square block; a sliding groove is opened at the top of the inner wall of the first through groove; a slider is slidably connected to the inner side wall of the sliding groove; a positioning block is fixedly connected to the bottom end of the outer wall of the slider through a first spring, and the positioning block is in the shape of a right-angled trapezoid, and the positioning block matches the positioning groove; a first threaded rod is rotatably connected to the top of the outer wall of the slider, and the top of the outer wall of the first threaded rod passes through the push rod, and the first threaded rod is threadedly connected to the push rod.

[0009] Preferably, the push rod includes a square shell and a square rod; the outer wall of the square rod is slidably connected to the inner wall of the square shell; the inner wall of the square shell is provided with an adjustment plate; a second spring is fixedly connected to one side of the outer wall of the adjustment plate, and one end of the outer wall of the second spring is fixedly connected to one end of the outer wall of the square rod.

[0010] Preferably, a placement groove is provided at one end of the outer wall of the square rod; a second threaded rod is rotatably connected to one side of the inner wall of the square shell, and one end of the outer wall of the second threaded rod passes through the adjustment plate and is located in the placement groove, and the second threaded rod is threadedly connected to the adjustment plate; a worm gear is fixedly connected to the outer wall of the second threaded rod; a worm is rotatably connected to the bottom end of the inner wall of the square shell, and the top end of the outer wall of the worm passes through the square shell, and the worm and the worm gear are meshed with each other.

[0011] Preferably, a third threaded rod is threadedly connected to the top of the outer wall of the square shell, and the bottom end of the outer wall of the third threaded rod passes through the top of the outer wall of the square shell and is located inside the square shell; a group of limiting grooves are opened at the top of the outer wall of the square rod, and the limiting grooves match the third threaded rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The push rod includes a square shell and a square plate, and the square rod is connected to the adjustment plate through the second spring. When the push rod is working, if it encounters an obstacle and generates vibration force, the vibration force will cause the square rod to move backward and transmit the force to the second spring, so that the second spring absorbs the force and plays a buffering role, so that the device can reduce the damage caused during the operation, thereby increasing the service life of the push rod and the push jack in the device and reducing the maintenance cost.

[0014] 2. By rotating the worm, the worm and the worm wheel are meshed with each other, so that the rotation of the worm drives the worm wheel to rotate, and the rotation of the worm wheel drives the second threaded rod to rotate. Since the second threaded rod is threadedly connected to the adjustment plate, the rotation of the second threaded rod can move the adjustment plate, and the adjustment plate drives the second spring and the square rod to move, so that the device can adjust the length between the square rod and the square shell, thereby adjusting the length of the entire push rod, so that the device can adjust the length of the push rod according to the environment and needs, so that the use range and use effect of the device are increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the exploded structure of the square plate and the hydraulic support base of the utility model;

[0018] Figure 3 It is a cross-sectional structural schematic diagram of the push jack, the push rod and the connector of the utility model;

[0019] Figure 4 It is a schematic diagram of the exploded structure of the square shell and the square rod of the utility model;

[0020] Figure 5 It is a schematic cross-sectional structure diagram of a square shell of the utility model;

[0021] In the figure: 1. hydraulic support base; 2. push jack; 3. push rod; 4. pin shaft; 5. connector; 6. square groove; 7. square plate; 8. threaded groove; 9. bolt; 10. square block; 11. first square groove; 12. positioning groove; 13. slide groove; 14. slide block; 15. positioning block; 16. first threaded rod; 301. square shell; 302. square rod; 17. adjustment plate; 18. placement groove; 19. second threaded rod; 20. worm gear; 21. worm; 22. third threaded rod; 23. limit groove. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 5As shown, the pushing mechanism of the hydraulic support for coal mining includes a hydraulic support base 1; a pushing jack 2 is provided on one side of the inner wall of the hydraulic support base 1; a pushing rod 3 is provided on one end of the outer wall of the pushing jack 2; a connecting head 5 is provided on one end of the outer wall of the pushing rod 3 through a pin shaft 4; a square groove 6 is provided on one side of the inner wall of the hydraulic support base 1; a square plate 7 is slidably placed on the inner side wall of the square groove 6; one end of the outer wall of the pushing jack 2 is fixedly connected to one side of the outer wall of the square plate 7; a group of threaded grooves 8 are provided on the inner side wall of the square groove 6; a group of bolts 9 are threadedly connected to one side of the outer wall of the square plate 7, and one end of the outer wall of the group of bolts 9 all penetrates the square plate 7, and the group of bolts 9 matches the group of threaded grooves 8, by putting the square plate 7 into the square groove 6 on the hydraulic support base 1 In the process, the connecting bolt 9 is rotated to make the bolt 9 rotate into the threaded groove 8 in the square groove 6, so that the bolt 9 fixes the square plate 7 in the square groove 6. Because one end of the outer wall of the push jack 2 is fixedly connected to one side of the outer wall of the square plate 7, when the push jack 2 and other mechanisms need to be maintained or serviced, the square plate 7 can be released by rotating the bolt 9, and the square plate 7, the push jack 2 and other mechanisms can be taken out, so that the push jack 2 and other mechanisms can be moved to an open space or a suitable position for maintenance and service, so that the staff can perform maintenance and service on the push jack 2 and other mechanisms more conveniently, and can be placed at will The positions of the push jack 2 and other mechanisms in the device make it more comprehensive to maintain and service the push jack 2 and other mechanisms in the device, so that it is not easy to cause a part to be left unmaintained and serviced. The push rod 3 includes a square shell 301 and a square rod 302; the outer wall of the square rod 302 is slidably connected to the inner wall of the square shell 301; the inner wall of the square shell 301 is provided with an adjustment plate 17; a second spring is fixedly connected to one side of the outer wall of the adjustment plate 17, and one end of the outer wall of the second spring is fixedly connected to one end of the outer wall of the square rod 302. Because the terrain of the coal mine is relatively complex, when the push rod 3 drives the connecting head 5 to push the conveyor, if an obstacle is encountered, the conveyor will collide with the obstacle, generating a vibration force, thereby vibrating The power is transmitted to the push rod 3 and the push jack 2 through the connector 5, so that the connector 5, the push rod 3 and the push jack 2 are damaged. The push rod 3 includes a square shell 301 and a square plate 7, and the square rod 302 is connected to the adjustment plate 17 through the second spring. When the push rod 3 is working, if it encounters an obstacle and generates vibration force, the vibration force will cause the square rod 302 to move backward and transmit the force to the second spring, so that the second spring absorbs the force, thereby playing a buffering role, so that the device can reduce the damage caused during the operation, thereby increasing the service life of the push rod 3 and the push jack 2 in the device, and reducing the maintenance cost, and a placement groove 18 is opened at one end of the outer wall of the square rod 302;A second threaded rod 19 is rotatably connected to one side of the inner wall of the square shell 301, and one end of the outer wall of the second threaded rod 19 penetrates the adjustment plate 17 and is located in the placement groove 18, and the second threaded rod 19 is threadedly connected to the adjustment plate 17; a worm wheel 20 is fixedly connected to the outer wall of the second threaded rod 19; a worm 21 is rotatably connected to the bottom end of the inner wall of the square shell 301, and the top end of the outer wall of the worm 21 penetrates the square shell 301, and the worm 21 and the worm wheel 20 are meshed with each other. By rotating the worm 21, the worm 21 and the worm wheel 20 are meshed with each other. The worm 21 is meshed with each other, so that the rotation of the worm 21 drives the worm wheel 20 to rotate, and the rotation of the worm wheel 20 drives the second threaded rod 19 to rotate. Since the second threaded rod 19 is threadedly connected to the adjusting plate 17, the rotation of the second threaded rod 19 can move the adjusting plate 17, so that the adjusting plate 17 drives the second spring and the square rod 302 to move, so that the device can adjust the length between the square rod 302 and the square shell 301, thereby adjusting the length of the entire push rod 3, so that the device can adjust the length of the push rod 3 according to the environment and needs, so that the use range and use effect of the device are increased, and it is more practical. A square block 10 is fixedly connected to one end of the outer wall of the output end of the push jack 2; a first square groove 11 is opened at one end of the outer wall of the push rod 3, and the first square groove 11 matches the square block 10; a locking groove 12 is opened at the top of the outer wall of the square block 10; a slide groove 13 is opened at the top of the inner wall of the first through groove; a slider 14 is slidably connected to the inner side wall of the slide groove 13; the outer wall bottom end of the slider 14 is connected to the first spring A positioning block 15 is fixedly connected, and the positioning block 15 is in the shape of a right-angled trapezoid, and the positioning block 15 matches the positioning groove 12; the top of the outer wall of the slider 14 is rotatably connected with a first threaded rod 16, and the top of the outer wall of the first threaded rod 16 passes through the push rod 3, and the first threaded rod 16 is threadedly connected with the push rod 3, by putting the square block 10 on the push jack 2 into the first square groove 11 on the push rod 3, because the top of the inner wall of the first through groove is provided with a slide groove 13; the inner side wall of the slide groove 13 is slidably connected with the slider 14;The bottom end of the outer wall of the slider 14 is fixedly connected with a blocking block 15 through a first spring, so that when the square block 10 is placed in the first through groove, it will contact the blocking block 15. Because the blocking block 15 is in a right-angled trapezoidal shape, when the square block 10 continues to move, the inclined surface of the blocking block 15 encounters the square block 10. Under the action of force, the blocking block 15 will move up along the inclined surface until the square block 10 moves to a certain position. The blocking block 15 will rebound into the blocking groove 12 on the square block 10 under the elastic force of the first spring, and the square block 10 and the push rod 3 are fixed. The fixing operation does not need to pull the blocking block 15, making the fixing operation of the device more convenient. When the fixation of the square block 10 and the push rod 3 needs to be released, the first threaded rod 16 is rotated. Since the first threaded rod 16 is threadedly connected to the push rod 3, the rotation of the first threaded rod 16 causes the first threaded rod 16 to move up and down, thereby causing the first threaded rod 16 to drive the slider 14 and the blocking block 15 to move up and down, thereby causing the blocking block 15 to move out of the blocking groove 12 and release the fixation. Since the push rod 3 and the push jack 2 in the device can be disassembled, the device is convenient for the push rod 3 and the push jack The jack 2 can be repaired or cleaned, and it is convenient to replace it. The fixing method in the device is a card-positioning structure, and the operation is relatively convenient, so that the device is convenient to install or disassemble the push rod 3 and the push jack 2. The third threaded rod 22 is threadedly connected to the top of the outer wall of the square shell 301, and the bottom end of the outer wall of the third threaded rod 22 passes through the top of the outer wall of the square shell 301 and is located in the square shell 301; a group of limiting grooves 23 are opened at the top of the outer wall of the square rod 302, and the limiting grooves 23 match the third threaded rod 22. When the push rod 3 performs the pulling operation , at this time, the second spring is not needed for buffering, and the second spring is easily damaged when the rack is pulled. By rotating the third threaded rod 22, the third threaded rod 22 is moved by rotation, so as to move into the limit groove 23 on the square rod 302, and the square rod 302 and the square shell 301 are fixed, so that the square rod 302 and the square shell 301 will not use the second spring when the rack is pulled, so that the second spring will not be damaged, and the device can fix the square rod 302 and the square shell 301 after the length of the push rod 3 is adjusted, and the device is more flexible. ;

[0024] Working principle: by putting the square plate 7 into the square groove 6 on the hydraulic support base 1, and then turning the bolt 9, so that the bolt 9 is rotated into the threaded groove 8 in the square groove 6, so that the bolt 9 fixes the square plate 7 in the square groove 6. Since one end of the outer wall of the push jack 2 is fixedly connected to one side of the outer wall of the square plate 7, when the push jack 2 and other mechanisms need to be maintained or serviced, the square plate 7 can be released by turning the bolt 9, and the square plate 7, the push jack 2 and other mechanisms can be taken out, so that the push jack 2 and other mechanisms can be moved to an open space or a suitable position for maintenance and service, and by putting the square block 10 on the push jack 2 into the first square groove 11 on the push rod 3, because the top of the inner wall of the first through groove is provided with a slide groove 13; the slide groove The inner wall of 13 is slidably connected with a slider 14; the bottom end of the outer wall of the slider 14 is fixedly connected with a blocking block 15 through a first spring, so that when the square block 10 is placed in the first through groove, it will contact the blocking block 15. Because the blocking block 15 is in the shape of a right-angled trapezoid, when the square block 10 continues to move, the inclined surface of the blocking block 15 encounters the square block 10. Under the action of force, the blocking block 15 will move up along the inclined surface until the square block 10 moves to a certain position. The blocking block 15 will rebound into the blocking groove 12 on the square block 10 under the elastic force of the first spring, and fix the square block 10 and the push rod 3. Because the fixing operation of the square block 10 and the push rod 3 does not require pulling the blocking block 15, the fixing operation of the device is more convenient. When it is necessary to release the fixing of the square block 10 and the push rod 3 When the first threaded rod 16 is rotated, since the first threaded rod 16 is threadedly connected to the push rod 3, the rotation of the first threaded rod 16 causes the first threaded rod 16 to move up and down, thereby causing the first threaded rod 16 to drive the slider 14 and the positioning block 15 to move up and down, thereby causing the positioning block 15 to move out of the positioning groove 12 and release the fixation. Since the push rod 3 and the push jack 2 in the device can be disassembled, the device is convenient for repairing or cleaning the push rod 3 and the push jack 2, as well as for replacing them. In addition, the fixing method in the device is a positioning structure, and the operation is relatively convenient, so that the device is convenient for installing or disassembling the push rod 3 and the push jack 2, so that the device can be more convenient for maintenance and maintenance of the push rod 3 and the push jack 2 and other mechanisms. , and when the terrain of the coal mine is relatively complex, when the push rod 3 drives the connecting head 5 to push the conveyor, if it encounters an obstacle, the conveyor will hit the obstacle and generate vibration force, so that the vibration force is transmitted to the push rod 3 and the push jack 2 through the connecting head 5, so that the connecting head 5, the push rod 3 and the push jack 2 are damaged. The push rod 3 includes a square shell 301 and a square plate 7, and the square rod 302 is connected to the adjustment plate 17 through the second spring. When the push rod 3 is operating, if it encounters an obstacle and generates vibration force, the vibration force will cause the square rod 302 to move backward, thereby transmitting the force to the second spring, so that the second spring absorbs the force, thereby playing a buffering role, so that the device can reduce the damage caused during the operation.Thus, the service life of the push rod 3 and the push jack 2 in the device is increased, and the maintenance cost is reduced. By rotating the worm 21, the worm 21 and the worm wheel 20 are meshed with each other, so that the rotation of the worm 21 drives the worm wheel 20 to rotate, and the rotation of the worm wheel 20 drives the second threaded rod 19 to rotate. Since the second threaded rod 19 is threadedly connected with the adjustment plate 17, the rotation of the second threaded rod 19 can move the adjustment plate 17, so that the adjustment plate 17 drives the second spring and the square rod 302 to move, so that the device can adjust the length between the square rod 302 and the square shell 301, thereby adjusting the length of the entire push rod 3, so that the device can adjust the push rod according to the environment and needs. 3, so that the use range and use effect of the device are increased, and it is more practical, and when the push rod 3 is used to pull the rack, the second spring is not needed for buffering, and the second spring is easily damaged when pulling the rack. By rotating the third threaded rod 22, the third threaded rod 22 is moved by rotation, so that it moves to the limit groove 23 on the square rod 302, and the square rod 302 and the square shell 301 are fixed, so that the square rod 302 and the square shell 301 will not use the second spring when pulling the rack, so that the second spring will not be damaged, and the device can fix the square rod 302 and the square shell 301 after the length of the push rod 3 is adjusted, and the device is more flexible.

[0025] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A hydraulic support push mechanism for coal mining, comprising a hydraulic support base (1); a push jack (2) is provided on one side of the inner wall of the hydraulic support base (1); a push rod (3) is provided on one end of the outer wall of the push jack (2); a connector (5) is provided on one end of the outer wall of the push rod (3) via a pin (4); characterized in that: A square groove (6) is provided on one side of the inner wall of the hydraulic support base (1); a square plate (7) is slidably placed on the inner wall of the square groove (6); one end of the outer wall of the push jack (2) is fixedly connected to one side of the outer wall of the square plate (7); a group of threaded grooves (8) are provided on the inner wall of the square groove (6); a group of bolts (9) are threadedly connected to one side of the outer wall of the square plate (7), and one end of the outer wall of the group of bolts (9) penetrates the square plate (7), and the group of bolts (9) matches the group of threaded grooves (8).

2. The pushing mechanism of the hydraulic support for coal mining according to claim 1 is characterized in that: A square block (10) is fixedly connected to one end of the outer wall of the output end of the push jack (2); a first square groove (11) is provided at one end of the outer wall of the push rod (3), and the first square groove (11) matches the square block (10); a locking groove (12) is provided at the top of the outer wall of the square block (10); a sliding groove (13) is provided at the top of the inner wall of the first square groove (11); a slider (14) is slidably connected to the inner wall of the sliding groove (13); a locking block (15) is fixedly connected to the bottom end of the outer wall of the slider (14) through a first spring, and the locking block (15) is in the shape of a right-angled trapezoid, and the locking block (15) matches the locking groove (12); a first threaded rod (16) is rotatably connected to the top of the outer wall of the slider (14), and the top of the outer wall of the first threaded rod (16) passes through the push rod (3), and the first threaded rod (16) is threadedly connected to the push rod (3).

3. The pushing mechanism of the hydraulic support for coal mining according to claim 2 is characterized in that: The push rod (3) comprises a square shell (301) and a square rod (302); the outer wall of the square rod (302) is slidably connected to the inner wall of the square shell (301); the inner wall of the square shell (301) is provided with an adjustment plate (17); a second spring is fixedly connected to one side of the outer wall of the adjustment plate (17), and one end of the outer wall of the second spring is fixedly connected to one end of the outer wall of the square rod (302).

4. The pushing mechanism of the hydraulic support for coal mining according to claim 3 is characterized in that: A placement groove (18) is provided at one end of the outer wall of the square rod (302); a second threaded rod (19) is rotatably connected to one side of the inner wall of the square shell (301), and one end of the outer wall of the second threaded rod (19) passes through the adjustment plate (17) and is located in the placement groove (18), and the second threaded rod (19) is threadedly connected to the adjustment plate (17); a worm wheel (20) is fixedly connected to the outer wall of the second threaded rod (19); a worm (21) is rotatably connected to the bottom end of the inner wall of the square shell (301), and the top end of the outer wall of the worm (21) passes through the square shell (301), and the worm (21) and the worm wheel (20) are meshed with each other.

5. The pushing mechanism of the hydraulic support for coal mining according to claim 4, characterized in that: The top end of the outer wall of the square shell (301) is threadedly connected to a third threaded rod (22), and the bottom end of the outer wall of the third threaded rod (22) passes through the top end of the outer wall of the square shell (301) and is located inside the square shell (301); a group of limiting grooves (23) are opened at the top end of the outer wall of the square rod (302), and the limiting grooves (23) match the third threaded rod (22).

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