Train coupler pin pulling device with positioning function

Abstract

The invention belongs to the technical field of train coupler pin pulling, and particularly relates to a train coupler pin pulling device with a positioning function, the train coupler pin pulling device comprises a coupler pin puller and a train coupler pin pulling robot, the coupler pin puller comprises a cavity and an unhooking device, and the unhooking device comprises a main hook and an auxiliary hook; a thread is arranged on the outer ring of the upper end of the cavity, the cavity is connected to the train coupler pin pulling robot through the thread, and the cavity comprises a positioning cylinder, a connecting rod, a threaded rod and a limiting cylinder; a threaded hole is formed in the upper portion of the cavity, the threaded rod is connected into the threaded hole in a threaded mode, the limiting barrel is fixedly installed at the lower end of the threaded rod, and a limiting disc is fixed to the upper end of the connecting rod. The problems that the connecting pin cannot be fully positioned during pin pulling, and the connecting pin cannot be smoothly pulled due to the fact that the connecting pin is tight in the pin pulling process are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of train coupler pin removal, and in particular relates to a train coupler pin removal device with a positioning function. Background Art

[0002] The application and role of automatic hook and pin removal robots in railway freight transport are mainly reflected in improving operational efficiency, reducing labor intensity, and ensuring operational safety. Specifically, the automatic hook and pin removal robot integrates robotic technology, intelligent perception and decision-making technology, and is equipped with a multi-sensor redundant system. It can significantly improve the level of automation in the unmanned unhooking operation of railway freight vehicles in front of the dumper, reduce labor intensity and personal safety risks. The automatic hook and pin removal robot can complete a single unhooking operation within 15 seconds, which is 50% more efficient than manual operation, and the unhooking success rate for all-weather unmanned operations is as high as 98%. This efficient operation method significantly reduces operation time and improves overall work efficiency. Usually, the robot performs the unhooking and pin removal work by clamping the connecting pin of the coupler and lifting the connecting pin; The coupler pins on trains vary in size. When using a coupler puller, the hook often fails to fully grip the pin, causing it to fall off the hook and fail to unhook or pull the pin. Therefore, the hook size needs to be adjusted and positioned. Most coupler pullers use multiple models to accommodate pins of varying sizes, significantly increasing the production cost of the device. Furthermore, the tightly connected pins cannot be tapped during pull-off, resulting in uneven pull-off and reduced pull-off efficiency. This phenomenon has become a pressing issue for those skilled in the art. Summary of the Invention

[0003] The object of the present invention is to provide a train coupler pin removal device with a positioning function to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a train coupler pin pulling device with a positioning function, comprising a coupler pin puller and a train coupler pin pulling robot, the coupler pin puller comprising a chamber and a hook puller, the hook puller comprising a main hook and an auxiliary hook; the upper end outer ring of the chamber is provided with a thread and is connected to the train coupler pin pulling robot through a thread, the chamber comprises a positioning cylinder, a connecting rod, a threaded rod and a limiting cylinder; a threaded hole is provided above the chamber, and the threaded rod is threadedly connected to the threaded hole, the limiting cylinder is fixedly installed on the lower end of the threaded rod, the upper end of the connecting rod is fixed with a limiting disk, and the limiting disk is slidably connected to the inside of the limiting cylinder, the bottom of the limiting cylinder is provided with a hole, and the connecting rod is inserted into the hole, the bottom of the chamber is provided with a circular hole, the positioning cylinder is sleeved on the outer side of the connecting rod and is slidably connected in the circular hole, the main hook is fixedly installed on the lower end of the connecting rod, and the auxiliary hook is fixedly installed on one side of the positioning cylinder.

[0005] The present invention further explains that a hydraulic plate is connected to the top of the positioning cylinder, a liquid pipe is connected to the lower right side of the chamber, the liquid pipe is connected to the external hydraulic pump pipeline, and a spring is arranged between the hydraulic plate and the limiting cylinder; a through hole is provided on the left side of the hydraulic plate, and a fixed rod is slidably connected in the through hole, a fixed block is fixed to the lower end of the fixed rod, the fixed rod is connected to the upper inner wall of the chamber, and the upper surface of the fixed block and the lower surface of the hydraulic plate are in contact with each other.

[0006] The present invention further describes that the middle of the hydraulic plate is convex, and a through hole is also provided in the middle of the convex part. The connecting rod is slidably connected to the through hole of the convex part in the middle of the hydraulic plate. The bottom surface of the limiting cylinder is provided with a sensing plate, and a sensing module is provided inside the sensing plate. The sensing module is used to control the operation of the external hydraulic pump according to whether the middle convex part of the hydraulic plate is in contact with the sensing plate, and whether it is in contact.

[0007] The present invention further states that the outer ring of the connecting rod is evenly provided with scales, and the values ​​of the scales correspond to the number of rotations of the threaded rod.

[0008] The present invention further describes that a threaded hole is also provided on the upper left side of the chamber, and the upper end of the fixing rod is threaded and threadedly connected to the threaded hole.

[0009] The present invention further states that the upper end of the positioning cylinder is threadedly connected to the raised portion of the hydraulic plate; the number of rotations of the positioning cylinder and the number of rotations of the fixing rod are both full circles, and the number of rotations of the two are consistent.

[0010] The present invention further states that after the fixing rod rotates in the forward direction, the space below the hydraulic plate increases.

[0011] The present invention further states that the bottom of the limiting cylinder and the limiting disk are both magnetic, and the magnetic poles are opposite.

[0012] Compared with the prior art, the present invention has the following beneficial effects: the coupler pin puller used in the present invention can be applied to coupling pins of different sizes and is easy and quick to operate. After the main hook and the auxiliary hook are positioned, the chamber is connected to the train coupler robot via threads to perform the pin pulling operation. Thus, the coupler pin pulling device can be adapted to various robots without having to replace the robot or the coupler pin puller, thus having a wide range of applications and significantly reducing costs. When pulling out the pins, tapping the connecting pins to loosen them can speed up the pulling out efficiency and make the pulling out work faster. After adjusting the position of the auxiliary hook, since the number of turns of the fixing rod cannot be predicted and the coupler pin puller has been installed on the robot, the operator can rotate the positioning cylinder in the opposite direction. The main hook and the auxiliary hook can be positioned and adjusted while the coupler pin puller is still installed on the robot without removing the coupler pin puller. This makes the operation more convenient, saves labor costs, and does not have a significant impact on the subsequent continuous pulling out efficiency. The overall structure is simple and the manufacturing cost of the pin pulling device is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the internal structure of the chamber of the present invention; Figure 3 is a cross-sectional view of the internal structure of the chamber of the present invention; Figure 4 It is a schematic diagram of the auxiliary hook and the main hook of the present invention being connected to connecting pins of different sizes; Figure 5 It is a cross-sectional view of the positioning cylinder and the limiting cylinder of the present invention; Figure 6 is an exploded view of the internal structure of the chamber of the present invention; Figure 7 It is a schematic diagram of adjusting the position of the main hook of the present invention; Figure 8 Schematic diagram of the process of the external hydraulic pump of the present invention filling the liquid into the chamber and releasing the pressure inside the chamber; Figure 9 It is a schematic diagram of the reverse rotation of the positioning cylinder after the fixing rod of the present invention rotates; In the figure: 1. Chamber; 11. Positioning cylinder; 12. Connecting rod; 121. Limiting plate; 13. Threaded rod; 14. Limiting cylinder; 15. Hydraulic plate; 16. Liquid pipe; 17. Spring; 18. Fixing rod; 181. Fixing block; 2. Main hook; 3. Auxiliary hook. DETAILED DESCRIPTION

[0014] The following is a non-limiting detailed description of the technical solutions of the present invention in conjunction with preferred embodiments and the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0015] See also Figures 1-9 The present invention provides a technical solution: a train coupler pin pulling device with a positioning function, comprising a coupler pin puller and a train coupler pin pulling robot, wherein the coupler pin puller comprises a chamber 1 and a hook puller, and the hook puller comprises a main hook 2 and an auxiliary hook 3; The upper outer ring of the chamber 1 is provided with a thread and is connected to the train coupler pin removal robot through the thread. The chamber 1 includes a positioning cylinder 11, a connecting rod 12, a threaded rod 13 and a limiting cylinder 14; A threaded hole is provided on the top of the chamber 1, and the threaded rod 13 is threadedly connected to the threaded hole, the limiting cylinder 14 is fixedly installed on the lower end of the threaded rod 13, the upper end of the connecting rod 12 is fixed with a limiting disk 121, and the limiting disk 121 is slidably connected to the inside of the limiting cylinder 14, the bottom of the limiting cylinder 14 is provided with a hole, and the connecting rod 12 is inserted into the hole, the bottom of the chamber 1 is provided with a circular hole, the positioning cylinder 11 is sleeved on the outside of the connecting rod 12, and is slidably connected to the circular hole, the main hook 2 is fixedly installed on the lower end of the connecting rod 12, and the auxiliary hook 3 is fixedly installed on one side of the positioning cylinder 11; The connecting pin is connected to the coupler, and the connecting pin is pulled out by the train coupler pin pulling robot, thereby removing the coupler and performing the pin pulling work. Before pulling out the pin, according to the size of the connecting pin of the train coupler, the operator can rotate the threaded rod 13 so that it moves downward while rotating through the threaded hole. The threaded rod 13 drives the limiting cylinder 14 to move downward, and the limiting cylinder 14 drives the connecting rod 12 to move downward through the limiting plate 121. The connecting rod 12 drives the main hook 2 to move downward, thereby increasing the distance between the main hook 2 and the auxiliary hook 3. Therefore, it can be applied to connecting pins of different sizes, and the operation is convenient and quick. Figure 4 as well as Figure 7 As shown; After the main hook 2 and the auxiliary hook 3 are positioned, the chamber 1 is connected to the train coupler robot through threads to perform the pin pulling work, so that the coupler pin pulling device can adapt to various robots without replacing the robot and the coupler pin puller. It has a wide range of applications, thereby significantly reducing costs.

[0016] A hydraulic plate 15 is connected to the top of the positioning cylinder 11, and a liquid pipe 16 is connected to the right side of the bottom of the chamber 1. The liquid pipe 16 is connected to the external hydraulic pump pipeline. A spring 17 is provided between the hydraulic plate 15 and the limiting cylinder 14. A through hole is provided on the left side of the hydraulic plate 15, and a fixing rod 18 is slidably connected in the through hole. A fixing block 181 is fixed to the lower end of the fixing rod 18. The fixing rod 18 is connected to the upper inner wall of the chamber 1, and the upper surface of the fixing block 181 is in contact with the lower surface of the hydraulic plate 15. During the pin pulling process, the hook is stuck in the connecting pin, and the external hydraulic pump is running, and liquid is injected into the chamber 1 through the liquid pipe 16. The liquid is continuously filled under the hydraulic plate 15 until it is full, and the external hydraulic pump continues to pressurize the liquid. The hydraulic plate 15 is pushed and slides upward along the inner wall of the chamber 1. The hydraulic plate 15 moves upward and presses the spring 17 to deform. Then the external hydraulic pump releases pressure, and the reaction force generated by the spring 17 causes the hydraulic plate 15 to quickly reset, and drives the auxiliary hook 3 to move up and down through the positioning cylinder 11, thereby slapping the connecting pin. For the tightly connected connecting pin, applying a strong slap to loosen the connecting pin can speed up the pin pulling efficiency and make the pin pulling work faster. Figure 8 As shown; At the same time, when the main hook 2 and the auxiliary hook 3 are positioned by rotating the threaded rod 13, the limit cylinder 14 moves, exerting pressure on the spring 17, causing the spring 17 to deform, thereby increasing the reaction force of the spring 17 when the connection is tapped, and the tapping force is relatively increased, further ensuring smooth pin removal.

[0017] The middle of the hydraulic plate 15 is convex, and a through-hole is also provided in the middle of the convex part. The connecting rod 12 is slidably connected to the through-hole of the convex part in the middle of the hydraulic plate 15. The bottom surface of the limiting cylinder 14 is provided with a sensing plate, and a sensing module is provided inside the sensing plate. The sensing module is used to control the operation of the external hydraulic pump according to whether the middle convex part of the hydraulic plate 15 contacts the sensing plate. When the external hydraulic pump is running and the chamber 1 is filled with liquid, the hydraulic plate 15 moves upward until the middle raised part of the hydraulic plate 15 contacts the sensing piece of the limit cylinder 14. The sensing module determines that the two are in contact, thereby controlling the external hydraulic pump to release pressure, so that the spring 17 is fully squeezed and the generated force is guaranteed, so that the connecting pin can be hit with maximum force.

[0018] The outer ring of the connecting rod 12 is evenly provided with scales, and the values ​​of the scales correspond to the number of rotations of the threaded rod 13; When positioning the main hook 2 and the auxiliary hook 3 according to the size of the connecting pin, the operator can first pull out the main hook 2, and the main hook 2 drives the limit plate 121 to slide in the limit cylinder 14 through the connecting rod 12, so that the hook is clamped on the connecting pin, and the scale value of the positioning cylinder 11 is extended by the connecting rod 12, so as to rotate the threaded rod 13 accordingly to perform positioning adjustment. After the adjustment is completed, the coupler pin puller is installed on the robot, which makes the operation more convenient and greatly improves the positioning adjustment efficiency.

[0019] A threaded hole is also provided on the upper left side of the chamber 1, and the upper end of the fixing rod 18 is threaded and is threadedly connected to the threaded hole;

[0020] In the first embodiment, after the main hook 2 is adjusted downward to the limit position, the hook is still unable to fully engage the connecting pin. At this time, the operator rotates the fixing rod 18, causing it to move while rotating through the threaded hole, thereby driving the fixing block 181 to move upward. The fixing block 181 drives the hydraulic plate 15 upward, and the hydraulic plate 15 drives the auxiliary hook 3 upward through the positioning cylinder 11 to adapt to the size of the connecting pin. After the adjustment is completed, since the initial position of the hydraulic plate 15 changes upward, the spring 17 is subjected to extrusion force in the initial state, thereby generating preliminary deformation. At this time, the external hydraulic pump fills the chamber 1 with liquid, causing the hydraulic plate 15 to move upward and then reset downward. The reaction force generated by the spring 17 causes the hydraulic plate 15 to quickly reset downward. Since the distance the hydraulic plate 15 moves up and down is shortened, the force generated by the impact is strengthened, and the slapping force of the auxiliary hook 3 on the connecting pin is greatly enhanced, thereby ensuring that the connecting pin is fully loosened and convenient for quick pin removal.

[0021] The upper end of the positioning cylinder 11 is threadedly connected to the raised portion of the hydraulic plate 15; The number of rotations of the positioning cylinder 11 and the number of rotations of the fixing rod 18 are both full turns, and the number of rotations of the two is the same;

[0022] In the second embodiment, after adjusting the position of the auxiliary hook 2, since the number of turns of the fixing rod 18 cannot be predicted, the adjustment is completed after several turns, and the coupler pin puller has been installed on the robot. The fixing rod 18 is located in the robot and cannot rotate. During the long-term pin pulling operation, due to the loosening of the threaded connection part, the clamping force of the connecting pin between the main hook 2 and the auxiliary hook 3 cannot be guaranteed. At this time, the operator can rotate the positioning cylinder 11 in the reverse direction to make it move while rotating through the threaded part, and the number of turns is a whole number. The main hook 2 and the auxiliary hook 3 can be positioned and adjusted while the coupler pin puller is still installed on the robot without removing the coupler pin puller. The operation is more convenient, labor costs are saved, and it will not have a significant impact on the subsequent continuous pin pulling efficiency.

[0023] After the fixing rod 18 rotates forward, the space below the hydraulic plate 15 increases;

[0024] In the third embodiment, after the main hook 2 is adjusted downward to the extreme position, the hook cannot be fully engaged with the connecting pin. The position of the auxiliary hook 3 is adjusted to further increase the distance between the main hook 2 and the auxiliary hook 3. At the same time, since the hydraulic plate 15 moves upward, its initial position changes, and the space below it increases. Under the force of the fixing rod 18 and the fixing block 181 on the hydraulic plate 15, the spring 17 has been preliminarily squeezed. When the external hydraulic pump fills the chamber 1 with liquid, the total energy consumption generated by the force on the hydraulic plate 15 is relatively reduced, thereby achieving an energy-saving effect.

[0025] The bottom of the limiting cylinder 14 and the limiting disk 121 are both magnetic, and the magnetic poles are opposite;

[0026] In the fourth embodiment, during the pin pulling process, the main hook 2 is pulled out and is subjected to the force of the connecting pin, so that the limit plate 121 floats up and down in the limit cylinder 14 through the connecting rod 12, so as to better engage the connecting pin. At the same time, due to the magnetic repulsion between the bottom of the limit cylinder 14 and the limit plate 121, the amplitude range is small, which can ensure that the connecting pin is engaged sufficiently and quickly, and can also avoid the main hook 2 and the auxiliary hook 3 from being too loose with respect to the connecting pin after engagement, thereby causing loss of contact with the connecting pin, thereby improving stability during pin pulling.

[0027] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the aforementioned embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A train coupler pin removal device with a positioning function, comprising a coupler pin remover and a train coupler pin removal robot, characterized in that: The coupler pin puller comprises a chamber (1) and a hook remover, wherein the hook remover comprises a main hook (2) and an auxiliary hook (3); The upper outer ring of the chamber (1) is provided with a thread and is connected to the train coupler pin removal robot via the thread. The chamber (1) comprises a positioning cylinder (11), a connecting rod (12), a threaded rod (13) and a limiting cylinder (14); A threaded hole is provided above the chamber (1), and the threaded rod (13) is threadedly connected to the threaded hole. The limiting cylinder (14) is fixedly installed at the lower end of the threaded rod (13). A limiting plate (121) is fixed at the upper end of the connecting rod (12), and the limiting plate (121) is slidably connected to the inside of the limiting cylinder (14). A hole is provided at the bottom of the limiting cylinder (14), and the connecting rod (12) is inserted into the hole. A circular hole is provided at the bottom of the chamber (1). The positioning cylinder (11) is sleeved on the outside of the connecting rod (12) and slidably connected to the circular hole. The main hook (2) is fixedly installed at the lower end of the connecting rod (12), and the auxiliary hook (3) is fixedly installed on one side of the positioning cylinder (11).

2. A train coupler pin removal device with a positioning function according to claim 1, characterized in that: A hydraulic plate (15) is connected to the top of the positioning cylinder (11), a liquid pipe (16) is connected to the right side of the bottom of the chamber (1), the liquid pipe (16) is connected to an external hydraulic pump pipeline, and a spring (17) is provided between the hydraulic plate (15) and the limiting cylinder (14); A through hole is provided on the left side of the hydraulic plate (15), and a fixing rod (18) is slidably connected in the through hole. A fixing block (181) is fixed to the lower end of the fixing rod (18). The fixing rod (18) is connected to the upper inner wall of the chamber (1), and the upper surface of the fixing block (181) is in contact with the lower surface of the hydraulic plate (15).

3. The train coupler pin removal device with positioning function according to claim 2, characterized in that: The middle of the hydraulic plate (15) is convex, and a through hole is also provided in the middle of the convex part. The connecting rod (12) is slidably connected to the through hole of the convex part in the middle of the hydraulic plate (15). The bottom surface of the limiting cylinder (14) is provided with a sensing sheet, and a sensing module is provided inside the sensing sheet. The sensing module is used to control the operation of the external hydraulic pump according to whether the convex part in the middle of the hydraulic plate (15) is in contact with the sensing sheet.

4. A train coupler pin removal device with a positioning function according to claim 3, characterized in that: The outer ring of the connecting rod (12) is evenly provided with scales, and the values ​​of the scales correspond to the number of rotations of the threaded rod (13).

5. The train coupler pin removal device with positioning function according to claim 4, characterized in that: A threaded hole is also provided on the upper left side of the chamber (1), and the upper end of the fixing rod (18) is threaded and is threadedly connected to the threaded hole.

6. The train coupler pin removal device with positioning function according to claim 5, characterized in that: The upper end of the positioning cylinder (11) is threadedly connected to the raised portion of the hydraulic plate (15); The number of rotations of the positioning cylinder (11) and the number of rotations of the fixing rod (18) are both full rotations, and the number of rotations of the two are consistent.

7. The train coupler pin removal device with positioning function according to claim 6, characterized in that: After the fixing rod (18) rotates in the forward direction, the space below the hydraulic plate (15) increases.

8. The train coupler pin removal device with positioning function according to claim 7, characterized in that: The bottom of the limiting cylinder (14) and the limiting disk (121) are both magnetic, and the magnetic poles are opposite.

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