A hydraulic telescopic automatic chain tensioning device for coal mine transfer machine

Abstract

The application provides a hydraulic telescopic automatic chain tightening device for a coal mine transfer machine, and relates to the field of coal mine transfer machines.The device comprises two guide rail frames, two guide rails fixedly connected to the upper surfaces of the two guide rail frames, a tail fixedly connected to the two guide rails, a stress block fixedly connected to the lower surface of the tail, an installation plate fixedly connected between the two guide rails, a hydraulic telescopic rod fixedly connected to the front surface of the rear guide rail frame, an output end of the hydraulic telescopic rod fixedly connected to the stress block, a distance measuring plate fixedly connected to the front surface of the stress block, a distance measuring sensor fixedly connected to the rear surface of the installation plate, a controller mounted on the guide rail frame, a scale arranged on the guide rail, and an automatic stopping assembly arranged on the installation plate.The tail is automatically pushed to move by means of the hydraulic telescopic rod, the number of personnel is reduced, the working hours are reduced, and the safety hazards caused by improper cooperation are significantly reduced.

Description

Technical Field

[0001] This application relates to the field of coal mine transfer machines, and more specifically, to a hydraulic telescopic automatic chain tightening device for coal mine transfer machines. Background Technology

[0002] In recent years, Yixin Coal Mine has made significant progress in improving the production efficiency and safety of the transport conveyor system in fully mechanized mining faces. However, as a key piece of equipment, the bridge transfer conveyor still faces some constraints in daily maintenance and conveyor belt replacement. Specifically, operations such as chain clamping and tightening require a large amount of manpower and time, which not only increases production costs but also poses a certain threat to the safety of miners.

[0003] In existing technologies, at least 3-4 miners are required to work together, with one person operating the transfer machine controller, two others responsible for breaking, replacing, and reconnecting the chain, and finally tightening the chain by jogging the machine. This operation method is not only inefficient but also poses potential safety hazards, especially when coordination is improper, which can easily lead to accidents. Therefore, we propose a hydraulic telescopic automatic chain tightening device for coal mine transfer machines. Summary of the Invention

[0004] The purpose of this application is to provide a hydraulic telescopic automatic chain tightening device for coal mine transfer machines, which can solve the technical problem that requires multiple people to work together, which is not only inefficient but also poses safety hazards.

[0005] This application provides a hydraulic telescopic automatic chain tightening device for a coal mine transfer machine, including two guide rail frames. Two guide rails are fixedly connected to the upper surfaces of the two guide rail frames. A tail section is slidably connected to the two guide rails. A force-bearing block is fixedly connected to the lower surface of the tail section. A mounting plate is fixedly connected between the two guide rails. A hydraulic telescopic rod is fixedly connected to the front surface of the rear guide rail frame. The output end of the hydraulic telescopic rod is fixedly connected to the force-bearing block. A distance measuring plate is fixedly connected to the front surface of the force-bearing block. A distance measuring sensor is fixedly connected to the rear surface of the mounting plate. A controller is mounted on the guide rail frames. Scales are provided on the guide rails. An automatic stop component is provided on the mounting plate.

[0006] Preferably, the automatic stop assembly includes two first mounting plates, which are fixedly connected to the front surface of the mounting plate, and a bidirectional screw is rotatably connected to the right surface of the left first mounting plate.

[0007] Preferably, the first mounting plate on the right side is rotatably sleeved on the outer surface of the bidirectional screw, the right end of the bidirectional screw is fixedly connected to a drive disk, and a guide rod is fixedly connected between the two guide rails.

[0008] Preferably, the outer surface of the guide rod is slidably fitted with two displacement seats, and the front surface of the mounting plate is provided with a through groove extending out of the rear surface of the mounting plate.

[0009] Preferably, a threaded sleeve is fixedly connected to the displacement seat, and the front surface of the threaded sleeve extends out of the front surface of the mounting plate through a through groove.

[0010] Preferably, the threaded sleeve is slidably connected to the through groove, and the two threaded sleeves are respectively threaded onto the two opposite threads of the bidirectional screw. Two fixing plates are fixedly connected to each of the two displacement seats.

[0011] Preferably, a connecting plate is rotatably connected between the upper and lower fixed plates, a displacement plate is rotatably connected to one side surface of the two connecting plates that are close to each other, a stop button is provided on the rear surface of the displacement plate, and a telescopic cylinder is fixedly connected to the front surface of the force-bearing block.

[0012] Preferably, a telescopic rod is slidably fitted inside the telescopic cylinder, the front end of the telescopic rod slides through the front surface of the telescopic cylinder, a spring is fixedly connected between the telescopic rod and the rear inner wall of the telescopic cylinder, and the controller is electrically connected to the stop button, the hydraulic telescopic rod, and the distance sensor.

[0013] The beneficial effects of this utility model are:

[0014] This utility model provides a hydraulic telescopic automatic chain tensioning device for coal mine transfer machines. It automatically pushes the rear of the machine to move by means of a hydraulic telescopic rod, reducing personnel input, reducing working hours, and significantly reducing safety hazards caused by improper coordination.

[0015] This utility model provides a hydraulic telescopic automatic chain tensioning device for coal mine transfer machines. It can automatically stop after reaching the travel limit by using a stop button and a telescopic rod to prevent accidents. At the same time, it can achieve precise adjustment through a scale and detect the distance in real time with a distance measuring sensor 8. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure in some embodiments of this application;

[0018] Figure 2 This is a schematic diagram of the hydraulic telescopic rod structure in some embodiments of this application;

[0019] Figure 3 This is a schematic diagram of the automatic stop component in some embodiments of this application;

[0020] Figure 4 This is a cross-sectional view of the telescopic cylinder in some embodiments of this application.

[0021] The reference numerals in the attached figures are as follows:

[0022] 1. Guide rail frame; 2. Guide rail; 3. Rear end; 4. Force-bearing block; 5. Mounting plate; 6. Hydraulic telescopic rod; 7. Distance measuring plate; 8. Distance sensor; 9. Controller; 10. Scale; 11. First mounting plate; 12. Bidirectional screw; 13. Drive disc; 14. Guide rod; 15. Displacement seat; 16. Through groove; 17. Threaded sleeve; 18. Fixing plate; 19. Connecting plate; 20. Displacement plate; 21. Stop button; 22. Telescopic cylinder; 23. Telescopic rod; 24. Spring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] Please see Figures 1-4 This utility model provides a technical solution: a hydraulic telescopic automatic chain tightening device for a coal mine transfer machine, comprising two guide rail frames 1, two guide rails 2 fixedly connected to the upper surface of the two guide rail frames 1, a tail 3 slidably connected to the two guide rails 2, a force-bearing block 4 fixedly connected to the lower surface of the tail 3, an mounting plate 5 fixedly connected between the two guide rails 2, a hydraulic telescopic rod 6 fixedly connected to the front surface of the rear guide rail frame 1, the output end of the hydraulic telescopic rod 6 fixedly connected to the force-bearing block 4, a distance measuring plate 7 fixedly connected to the front surface of the force-bearing block 4, a distance measuring sensor 8 fixedly connected to the rear surface of the mounting plate 5, a controller 9 mounted on the guide rail frame 1, a scale 10 set on the guide rail 2, and an automatic stop component set on the mounting plate 5. When tightening the chain, the tail 3 can be automatically pushed to move by means of the hydraulic telescopic rod 6, reducing personnel input, reducing working hours, and significantly reducing safety hazards caused by improper coordination.

[0030] Furthermore, the automatic stop assembly includes two first mounting plates 11, which are fixedly connected to the front surface of the mounting plate 5. A bidirectional screw 12 is rotatably connected to the right side surface of the left first mounting plate 11, and the right first mounting plate 11 is rotatably sleeved on the outer surface of the bidirectional screw 12. A drive disk 13 is fixedly connected to the right end of the bidirectional screw 12. A guide rod 14 is fixedly connected between the two guide rails 2, and two displacement seats 15 are slidably sleeved on the outer surface of the guide rod 14. A through groove 16 extending from the rear surface of the mounting plate 5 is opened on the front surface of the mounting plate 5. A threaded sleeve 17 is fixedly connected to the displacement seat 15. The front surface of the threaded sleeve 17 extends from the front surface of the mounting plate 5 through the through groove 16, and the threaded sleeve 17 is slidably connected to the through groove 16. The two threaded sleeves 17 are respectively threaded onto the two opposite threads of the bidirectional screw 12. Two fixed plates 18 are fixedly connected to the displacement seat 15. A connecting plate 19 is rotatably connected between the upper and lower fixed plates 18. A displacement plate 20 is rotatably connected to the adjacent side surface of the two connecting plates 19. A stop button 21 is provided on the rear surface of the displacement plate 20. A telescopic cylinder 22 is fixedly connected to the front surface of the force block 4. A telescopic rod 23 is slidably sleeved inside the telescopic cylinder 22. The front end of the telescopic rod 23 slides through the front surface of the telescopic cylinder 22. A spring 24 is fixedly connected between the telescopic rod 23 and the rear inner wall of the telescopic cylinder 22. The controller 9 is electrically connected to the stop button 21, the hydraulic telescopic rod 6, and the distance sensor 8. It can automatically stop after reaching the stroke by using the cooperation of the stop button 21 and the telescopic rod 23 to prevent accidents. At the same time, it can achieve precise adjustment through the scale 10 and cooperate with the distance sensor 8 to detect the distance in real time.

[0031] Infrared sensors can be installed between the two guide rails 2 to prevent pinching during the movement of the rear of the vehicle.

[0032] When the hydraulic telescopic automatic chain tensioning device of this coal mine transfer machine is in use, the hydraulic telescopic rod 6 pushes the force block 4 to move. When the force block 4 moves, it will synchronously drive the tail 3 of the car to move. Before the movement, the drive disc 13 can be rotated to drive the bidirectional screw 12 to rotate. Since the two threaded sleeves 17 are respectively threaded on the two opposite threads of the bidirectional screw 12, and the movement trajectory of the threaded sleeves 17 is strictly limited, the rotation of the bidirectional screw 12 will synchronously drive the two threaded sleeves 17 to move in opposite directions. In turn, the threaded sleeves 17 drive the displacement seat 15 to move. When the two displacement seats 15 move, the connecting plate 19 drives the displacement plate 20 to move horizontally. When the displacement plate 20 moves, it will simultaneously drive the stop button 21 to move, and adjust it to the area to be stopped with the scale 10. After the hydraulic telescopic rod 6 pushes the rear of the vehicle 3 to this area, the telescopic rod 23 will contact the stop button 21, and then the controller 9 will stop the hydraulic telescopic rod 6. At the same time, during the movement of the rear of the vehicle 3, the distance of the rear of the vehicle 3 can be detected in real time with the help of the distance sensor 8, and the spring 24 can be used to reduce the damage to the stop button 21 when it comes into contact.

[0033] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hydraulic telescopic automatic chain tensioning device for a coal mine transfer conveyor, characterized in that: The device includes two guide rail frames (1), with two guide rails (2) fixedly connected to the upper surfaces of the two guide rail frames (1). A tail section (3) is slidably connected to the two guide rails (2). A force-bearing block (4) is fixedly connected to the lower surface of the tail section (3). A mounting plate (5) is fixedly connected between the two guide rails (2). A hydraulic telescopic rod (6) is fixedly connected to the front surface of the rear guide rail frame (1). The output end of the hydraulic telescopic rod (6) is fixedly connected to the force-bearing block (4). A distance measuring plate (7) is fixedly connected to the front surface of the force-bearing block (4). A distance measuring sensor (8) is fixedly connected to the rear surface of the mounting plate (5). A controller (9) is installed on the guide rail frame (1). A scale (10) is provided on the guide rail (2). An automatic stop component is provided on the mounting plate (5).

2. The hydraulic telescopic automatic chain tensioning device for a coal mine transfer machine according to claim 1, characterized in that: The automatic stop assembly includes two first mounting plates (11), which are fixedly connected to the front surface of the mounting plate (5), and a bidirectional screw (12) is rotatably connected to the right surface of the left first mounting plate (11).

3. The hydraulic telescopic automatic chain tensioning device for a coal mine transfer machine according to claim 2, characterized in that: The first mounting plate (11) on the right side is rotatably sleeved on the outer surface of the bidirectional screw (12). The right end of the bidirectional screw (12) is fixedly connected to a drive disk (13), and a guide rod (14) is fixedly connected between the two guide rails (2).

4. The hydraulic telescopic automatic chain tensioning device for a coal mine transfer machine according to claim 3, characterized in that: The outer surface of the guide rod (14) is slidably fitted with two displacement seats (15), and the front surface of the mounting plate (5) is provided with a through groove (16) extending out of the rear surface of the mounting plate (5).

5. A hydraulic telescopic automatic chain tensioning device for a coal mine transfer machine according to claim 4, characterized in that: A threaded sleeve (17) is fixedly connected to the displacement seat (15), and the front surface of the threaded sleeve (17) extends out of the front surface of the mounting plate (5) through the through groove (16).

6. A hydraulic telescopic automatic chain tensioning device for a coal mine transfer machine according to claim 5, characterized in that: The threaded sleeve (17) is slidably connected to the through groove (16), and the two threaded sleeves (17) are respectively threaded on the two opposite threads of the bidirectional screw (12). Two fixed plates (18) are fixedly connected to the two displacement seats (15).

7. A hydraulic telescopic automatic chain tensioning device for a coal mine transfer conveyor according to claim 6, characterized in that: A connecting plate (19) is rotatably connected between the upper and lower fixed plates (18). A displacement plate (20) is rotatably connected to one side surface of the two connecting plates (19) that are close to each other. A stop button (21) is provided on the rear surface of the displacement plate (20). A telescopic cylinder (22) is fixedly connected to the front surface of the force block (4).

8. A hydraulic telescopic automatic chain tensioning device for a coal mine transfer machine according to claim 7, characterized in that: The telescopic cylinder (22) is slidably fitted with a telescopic rod (23). The front end of the telescopic rod (23) slides through the front surface of the telescopic cylinder (22). A spring (24) is fixedly connected between the telescopic rod (23) and the rear inner wall of the telescopic cylinder (22). The controller (9) is electrically connected to the stop button (21), the hydraulic telescopic rod (6), and the distance sensor (8).

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