An automatic hooking and unhooking wheel set lifting device

Abstract

The application discloses a wheel set lifting device capable of automatically hooking and unhooking, relates to the wheel set hoisting technical field, and comprises a crossbeam provided with lifting lugs and two end arc plates each provided with a hooking part, further comprises an automatic hooking unit, which is used for automatically contacting the hooking parts of the two end arc plates with wheel inner side recessed support point parts to form hooking and automatically performing unhooking operation after the wheel set is hoisted. In the whole hoisting process of the lifting device, the hooking and unhooking operations can be automatically performed, manual rotation of the crossbeam for auxiliary operation is not needed, operation troubles are reduced, and use safety is improved.

Description

Technical Field

[0001] This invention relates to the field of wheelset lifting technology, and in particular to an automatic hooking and unhooking wheelset lifting device. Background Technology

[0002] The wheelset is the part of a locomotive or rolling stock that comes into contact with the rails. It consists of two wheels, left and right, firmly pressed onto the same axle. The function of the wheelset is to ensure the locomotive or rolling stock's operation and steering on the rails, to bear all static and dynamic loads from the locomotive or rolling stock, to transfer them to the rails, and to transfer loads caused by track irregularities to the various components of the locomotive or rolling stock.

[0003] Currently, during wheelset production, a lifting device is needed to lift the wheelsets. A relevant reference is Chinese patent document CN10631538B, which discloses a special lifting device for non-disc brake wheelsets. This device includes two lifting lugs, a lifting beam, two end arc plates, and eight locking bolts. Its usage is as follows: A lifting chain is threaded through the two lifting lugs and hooked onto a crane hook. The lifting device is then lifted, positioned at a certain angle to the wheelset axle axis, and placed between the two wheels. As it approaches the axle, the lifting device is rotated until it is parallel to the wheelset axle axis. At this point, the crane slowly lifts the wheelset, allowing the end arc plates to enter the recessed areas of the inner spokes of the wheels and gradually tighten, lifting the wheelset. Upon reaching the target position, the wheelset is lowered, and the lifting device is slightly rotated to form a certain angle with the wheelset axle axis before being lifted away.

[0004] As can be seen from the above usage method, in actual use, the lifting beam needs to be manually rotated at a certain angle so that the hook part of the end arc plate can move to the inner recess of the wheel. Then, the hook part contacts the inner wall of the recess to form a hook on the wheel pair. After the lifting is completed, the lifting beam also needs to be manually rotated so that the end arc plate can be rotated out of the inner recess of the wheel. Each lifting requires the lifting beam to be rotated multiple times, which is troublesome and increases the risk of injury to the operator. Therefore, this application provides an automatic hooking and unhooking wheelset lifting device to meet the requirements. Summary of the Invention

[0005] The purpose of this application is to provide an automatic hooking and unhooking wheelset lifting device to solve the technical problem that existing wheelsets require manual rotation of the lifting beam each time they are lifted, which leads to cumbersome operation and increased risk of injury to operators.

[0006] To achieve the above objectives, this application provides the following technical solution: an automatic hooking and unhooking wheelset lifting device, comprising a crossbeam with lifting lugs and two end arc plates, each with a hook portion, and an automatic hooking unit for automatically engaging the hook portions of the two end arc plates with the recessed support points on the inner side of the wheel to form a hook, and automatically unhooking after the wheelset is lifted.

[0007] As a preferred embodiment of this invention, the automatic hooking unit includes

[0008] Rotating unit: used to drive the end arc plates to rotate, so that the hook parts of the two end arc plates rotate and move into the inner recess of the wheel. In the initial state, the hook parts of the two end arc plates are located outside the inner recess of the wheel.

[0009] Drive unit: Used to drive the rotating unit to rotate the end arc plate. When the drive unit is descending, it will contact the wheelset and form a squeeze. The squeeze force drives the rotating unit to run. During the first squeeze, the two hook parts will rotate to the inner recess of the wheel. During the second squeeze, the two hook parts will move out of the inner recess of the wheel. The squeeze is repeated, and the two hook parts repeatedly enter and move out of the inner recess of the wheel.

[0010] In a preferred embodiment of this invention, the rotating unit includes a cylinder with an upper arc-shaped guide groove and a lower arc-shaped guide groove on its outer surface, and two vertical guide grooves. The lower end of the upper arc-shaped guide groove extends spirally downward along the outer surface of the cylinder, and the upper end of the lower arc-shaped guide groove extends spirally upward along the outer surface of the cylinder. The beginning and end ends of the upper arc-shaped guide groove and the lower arc-shaped guide groove are respectively connected to the corresponding vertical guide grooves. A guide slope is installed at the bottom of the inner cavity of the two vertical guide grooves. A column is installed at the lower end of the cylinder, and the lower end of the column passes through the crossbeam and is fixedly connected to the upper end of the end arc plate.

[0011] The drive unit includes a mounting plate, on which a contact limiting plate is mounted. The lower end of the contact limiting plate has an arc-shaped concave surface adapted to the outer surface of the wheel. A vertical rod and a telescopic rod are mounted on the mounting plate. The upper end of the telescopic rod is connected to the crossbeam through a connecting plate. A buffer spring is sleeved on the telescopic rod. A pressing rod is rotatably mounted on the vertical rod, and the end of the pressing rod is located at the entrance of the lower arc-shaped guide groove.

[0012] The end arc plate is located below the contact limiting plate.

[0013] In a preferred embodiment of this invention, the lower end of the cylinder is provided with a plurality of mounting seats in a circular pattern, and each mounting seat is equipped with a universal ball bearing, the lower ends of the plurality of universal ball bearings being in contact with the upper end of the crossbeam.

[0014] As a preferred embodiment of this invention, a protection unit is also included. When the end arc plate bears the weight of the wheelset, the protection unit is used to house the universal ball bearings into the inner cavity of the cylinder. When the cylinder is driven to rotate by the rotating unit, the protection unit is used to move the universal ball bearings out of the inner cavity of the cylinder.

[0015] In a preferred embodiment of this invention, the protection unit includes a compression spring installed in the inner cavity of the cylinder. The upper end of the column is slidably disposed in the inner cavity of the cylinder and fixedly connected to the baffle. The compression spring is sleeved on the periphery of the column. The inner cavity of the cylinder is provided with a blocking step located below the baffle. The lower end of the baffle is provided with a plurality of first toothed rods arranged in a circular pattern. The lower ends of the first toothed rods are located in a movable cavity and mesh with second toothed rods through a gear rotatably disposed in the movable cavity. The lower ends of the second toothed rods are fixedly connected to a mounting seat movably disposed in the movable cavity.

[0016] Throughout the entire hoisting process, the buffer spring remains in a compressed state.

[0017] Preferably, an L-shaped plate is installed on the side end of the contact limiting plate, and an inclined guide plate is connected to the lower end of the L-shaped plate. The distance between the upper ends of the two guide plates is adapted to the distance between the outer ends of the two wheels.

[0018] In summary, the technical effects and advantages of this invention are as follows:

[0019] The present invention has a reasonable structure. During the entire lifting process, the hooking and unhooking operations can be performed automatically without the need for manual rotation of the crossbeam, which reduces the trouble of operation and increases the safety of use.

[0020] In this invention, a protective unit and universal ball bearings are provided. When the end arc plate bears the weight of the wheelset, the protective unit is used to automatically store the universal ball bearings into the inner cavity of the cylinder. When the cylinder is driven to rotate by the rotating unit, the protective unit is used to automatically move the universal ball bearings out of the inner cavity of the cylinder. This can reduce the wear of various components, facilitate the rotation of the cylinder, and also prevent the universal ball bearings from being damaged due to excessive weight of the wheelset. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the drive unit structure;

[0024] Figure 3 for Figure 1 Schematic diagram of the rotating unit and its enlarged local structure;

[0025] Figure 4 Here are schematic diagrams of the cross-sectional structures of the three cylinders;

[0026] Figure 5 A frontal cross-section of the wheel and a structural diagram showing the positional relationship between the wheel and its components;

[0027] Figure 6 for Figure 1 Mid-top view of the structure.

[0028] In the diagram: 1. Crossbeam; 2. End arc plate; 3. Hook; 4. Drive unit; 5. Rotation unit; 6. Protection unit; 7. Mounting base; 8. Universal ball bearings;

[0029] 42. Mounting plate; 43. Contact limiting plate; 44. Guide ramp; 45. L-shaped plate; 46. Upright pole; 47. Compression rod; 48. Buffer spring; 49. Telescopic rod; 40. Connecting plate;

[0030] 51. Cylinder; 52. Column; 53. Lower arc-shaped guide groove; 54. Upper arc-shaped guide groove; 55. Vertical guide groove; 56. Guide slope;

[0031] 61. Baffle; 62. Blocking step; 63. First rack; 64. Second rack; 65. Gear; 66. Movable cavity; 67. Compression spring. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example: Reference Figure 1 The wheelset lifting device shown includes a crossbeam 1 with lifting lugs and two end arc plates 2, each with a hook part 3. It also includes an automatic hooking unit for automatically engaging the hook parts 3 of the two end arc plates 2 with the recessed support points on the inner side of the wheel to form a hook, and automatically performing the unhooking operation after the wheelset is lifted.

[0034] As a preferred embodiment of this example, Figure 1 As shown, the automatic hooking unit includes

[0035] Rotating unit 5: used to drive the end arc plate 2 to rotate, so that the hook parts 3 of the two end arc plates 2 rotate and move into the inner recess of the wheel. In the initial state, the hook parts 3 of the two end arc plates 2 are located outside the inner recess of the wheel.

[0036] Drive unit 4: Used to drive the rotating unit 5 to rotate the end arc plate 2. When the drive unit 4 is moving downward, it will contact the wheelset and form a squeeze. The squeeze force drives the rotating unit 5 to run. During the first squeeze, the two hook parts 3 will rotate to the inner recess of the wheel. During the second squeeze, the two hook parts 3 will move out of the inner recess of the wheel. The squeeze is repeated, and the two hook parts 3 repeatedly enter the inner recess of the wheel and move out of the inner recess of the wheel.

[0037] As a preferred embodiment of this example, Figure 1-3 As shown, the rotating unit 5 includes a cylinder 51 with an upper arc-shaped guide groove 54 and a lower arc-shaped guide groove 53 on its outer surface, and two vertical guide grooves 55. The lower end of the upper arc-shaped guide groove 54 extends spirally downward along the outer surface of the cylinder 51, and the upper end of the lower arc-shaped guide groove 53 extends spirally upward along the outer surface of the cylinder 51. The beginning and end ends of the upper arc-shaped guide groove 54 and the lower arc-shaped guide groove 53 are respectively connected to the corresponding vertical guide grooves 55. A guide slope 56 is installed at the bottom of the inner cavity of the two vertical guide grooves 55. A column 52 is installed at the lower end of the cylinder 51, and the lower end of the column 52 passes through the crossbeam 1 and is fixedly connected to the upper end of the end arc plate 2.

[0038] The drive unit 4 includes a mounting plate 41, on which a contact limiting plate 42 is mounted. The lower end of the contact limiting plate 42 is provided with an arc-shaped concave surface adapted to the outer surface of the wheel. A vertical rod 45 and a telescopic rod 48 are mounted on the mounting plate 41. The upper end of the telescopic rod 48 is connected to the crossbeam 1 through a connecting plate 49. A buffer spring 47 is sleeved on the telescopic rod 48. A pressing rod 46 is rotatably mounted on the vertical rod 45. The end of the pressing rod 46 is located at the entrance of the lower arc-shaped guide groove 53.

[0039] The end arc plate 2 is located below the contact limiting plate 42.

[0040] Initially, the hooks 3 of the two end arc plates 2 are positioned opposite each other. In use, the crossbeam 1 is lifted by two chains and suspended on the corresponding crane hooks. After this, the crane controller moves the lifting device to the top of the object being lifted. The device is then moved downwards. As it moves downwards, the end arc plates 3 first move to below the contact point on the inner side of the wheel. Then, the lower end of the contact limiting plate 42 contacts the wheel and forms a compression. At this time, the crossbeam 1 moves downwards relative to the contact limiting plate 42. Through the compression action of the compression rod 46, the cylinder 51 rotates, and the hooks 3 of its end arc plates 2 rotate to the inner side of the wheel. Then, the lifting device is moved upwards, and the compression rod 46 moves vertically... The straight guide groove 55 moves downward and to its lowest point. When the contact limit plate 42 separates from the wheel, the hook parts 3 of the two rising end arc plates 2 will contact the inner recessed walls of the two wheels respectively and lift the entire wheelset. When the wheelset is lifted to a specific location, the lifting device is controlled to move downward. The lower end of the contact limit plate 42 will contact the outer wall of the wheel again to form a compression. The cylinder 51 will continue to rotate half a turn in the same direction to return to its original position. The hook parts 3 of the two end arc plates 2 are set opposite to each other. At this time, the lifting device is controlled to move upward. The end arc plates 2 can no longer hook the wheelset and can be safely removed. During the entire lifting process, the hooking and unhooking operations can be performed automatically without the need for manual rotation of the crossbeam 1 for auxiliary operations, reducing operational trouble and increasing safety.

[0041] It should be noted that this lifting tool is suitable for wheelsets without brake discs and wheelsets with brake discs mounted on the axle. For wheelsets with brake discs mounted on the axle, the end arc plate 2 is located between the corresponding wheel and brake disc, such as... Figure 5 As shown.

[0042] As a preferred embodiment of this example, Figure 4 As shown, the lower end of the cylinder 51 is provided with several mounting seats 7 in a circular pattern, and each mounting seat 7 is equipped with universal ball bearings 8. The lower ends of the multiple universal ball bearings 8 are in contact with the upper end of the crossbeam 1.

[0043] The purpose of the universal ball bearings 8 is to reduce the friction between the cylinder 51 and the crossbeam 1, which is conducive to the rotation of the cylinder 51 relative to the crossbeam 1, and also improves the service life of each component.

[0044] It is important to note that excessive wear on the bottom of cylinder 51 should also be prevented, which could affect the rotation of cylinder 51 driven by extrusion rod 46 (when the bottom of cylinder 51 is worn too much, it may increase the possibility that subsequent extrusion rod 46 cannot move into the upper arc guide groove 54 or the lower arc guide groove 53, ultimately affecting the rotation of cylinder 51).

[0045] As a preferred embodiment of this example, Figure 4 As shown, it also includes a protection unit 6. When the end arc plate 2 bears the weight of the wheelset, the protection unit 6 is used to store the universal ball 8 into the inner cavity of the cylinder 51. When the cylinder 51 is driven to rotate by the rotating unit 5, the protection unit 6 is used to move the universal ball 8 out of the inner cavity of the cylinder 51.

[0046] As a preferred embodiment of this example, Figure 4 As shown, the protection unit 6 includes a compression spring 67 installed in the inner cavity of the cylinder 51. The upper end of the column 52 is slidably disposed in the inner cavity of the cylinder 51 and fixedly connected to the baffle 61. The compression spring 67 is sleeved on the outer periphery of the column 52. The inner cavity of the cylinder 51 is provided with a blocking step 62 located below the baffle 61. The lower end of the baffle 61 is provided with a plurality of first toothed rods 63 arranged in a circular shape. The lower ends of the first toothed rods 63 are located in the movable cavity 66 and are engaged with the second toothed rods 64 through a gear 65 rotatably disposed in the movable cavity 66. The lower end of the second toothed rods 64 is fixedly connected to the mounting seat 7 movably disposed in the movable cavity 66.

[0047] Throughout the entire hoisting process, the buffer spring 47 remained in a compressed state.

[0048] After the hook part 3 contacts the inner wall of the wheel recess, as the lifting device continues to rise, its compression spring 67 will be compressed. When the lower end of the baffle 61 contacts the blocking step 62, the compression spring 67 will stop being compressed (to prevent the compression spring 67 from being over-compressed and damaged). At this time, the universal ball bearing 8 moves into the movable cavity 66, and the cylinder 51 will move downward slightly and contact the upper end of the crossbeam 1. Since the buffer spring 47 is in a compressed state throughout the lifting process, the mounting plate 41 will be driven to compress under the elastic force of the buffer spring 47. The rod 46 moves slightly downward (the compression rod 46 will move slightly downward along with the cylinder 51). As the lifting device continues to move upward, the end arc plate 2 lifts the wheelset. At this time, the lower end of the cylinder 51 contacts the upper end of the crossbeam 1 to form support, preventing the universal ball bearing 8 from being damaged due to excessive compression. When the wheelset is lifted to a specific position and the end arc plate 2 separates from the wheel, the elastic force of the compression spring 67 will cause the universal ball bearing 8 to move out of the movable cavity 66 and contact the upper end of the crossbeam 1, preparing for the subsequent rotational movement of the cylinder 1.

[0049] As a preferred embodiment of this example, Figure 2 As shown, an L-shaped plate 44 is installed on the side end of the contact limiting plate 42, and an inclined guide plate 43 is connected to the lower end of the L-shaped plate 44. The distance between the upper ends of the two guide plates 43 is adapted to the distance between the outer ends of the two wheels. The crossbeam 1 is limited by the cooperation of the L-shaped plate 44 and the guide plate 43, which can prevent the crossbeam 1 from deviating from its position.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wheel set hanger capable of automatic hooking and unhooking, comprising a crossbeam (1) with lifting lugs and two end arc plates (2) each with a hooking portion (3), characterized in that: It also includes an automatic hooking unit, which is used to automatically contact the hooking part (3) of the two end arc plates (2) with the recessed support point on the inner side of the wheel to form a hook, and automatically perform the unhooking operation after the wheelset is lifted. Rotating unit (5): used to drive the end arc plate (2) to rotate, so that the hook part (3) of the two end arc plates (2) rotates and moves into the inner recess of the wheel. In the initial state, the hook part (3) of the two end arc plates (2) is located outside the inner recess of the wheel. Drive unit (4): used to drive the rotating unit (5) to rotate the end arc plate (2). When the drive unit (4) is making a downward movement, it will contact the wheelset to form a squeeze. The squeeze force drives the rotating unit (5) to run. During the first squeeze, the two hook parts (3) will rotate to the inner recess of the wheel. During the second squeeze, the two hook parts (3) will move out of the inner recess of the wheel. The squeeze is repeated, and the two hook parts (3) repeatedly enter the inner recess of the wheel and move out of the inner recess of the wheel. The rotating unit (5) includes a cylinder (51) with an upper arc-shaped guide groove (54) and a lower arc-shaped guide groove (53) on its outer surface and two vertical guide grooves (55). The lower end of the upper arc-shaped guide groove (54) extends spirally downward along the outer surface of the cylinder (51), and the upper end of the lower arc-shaped guide groove (53) extends spirally upward along the outer surface of the cylinder (51). The beginning and end ends of the upper arc-shaped guide groove (54) and the lower arc-shaped guide groove (53) are respectively connected to the corresponding vertical guide grooves (55). The bottom of the inner cavity of the two vertical guide grooves (55) is equipped with a guide slope (56). A column (52) is installed at the lower end of the cylinder (51), and the lower end of the column (52) passes through the crossbeam (1) and is fixedly connected to the upper end of the end arc plate (2). The drive unit (4) includes a mounting plate (41), on which a contact limiting plate (42) is mounted, and the lower end of the contact limiting plate (42) is provided with an arc-shaped concave surface adapted to the outer surface of the wheel. A vertical rod (45) and a telescopic rod (48) are mounted on the mounting plate (41), and the upper end of the telescopic rod (48) is connected to the crossbeam (1) through a connecting plate (49). A buffer spring (47) is sleeved on the telescopic rod (48), and a pressing rod (46) is rotatably provided on the vertical rod (45), and the end of the pressing rod (46) is located at the entrance of the lower arc-shaped guide groove (53). The end arc plate (2) is located below the contact limiting plate (42).

2. The automatic hooking and unhooking wheelset sling according to claim 1, characterized in that: The lower end of the cylinder (51) is provided with a number of mounting seats (7) in a circular pattern, and each mounting seat (7) is equipped with a universal ball bearing (8). The lower ends of the multiple universal ball bearings (8) are in contact with the upper end of the crossbeam (1).

3. The automatic hooking and unhooking wheelset hanger according to claim 2, characterized in that: It also includes a protection unit (6), which is used to house the universal ball (8) into the inner cavity of the cylinder (51) when the end arc plate (2) bears the weight of the wheelset. When the cylinder (51) is driven to rotate by the rotating unit (5), the protection unit (6) is used to move the universal ball (8) out of the inner cavity of the cylinder (51).

4. The automatic hooking and unhooking wheelset lifting device according to claim 3, characterized in that: The protection unit (6) includes a compression spring (67) installed in the inner cavity of the cylinder (51). The upper end of the column (52) is slidably disposed in the inner cavity of the cylinder (51) and fixedly connected to the baffle (61). The compression spring (67) is sleeved on the outer periphery of the column (52). The inner cavity of the cylinder (51) is provided with a blocking step (62) located below the baffle (61). The lower end of the baffle (61) is provided with a plurality of first toothed rods (63) arranged in a circular shape. The lower end of the first toothed rod (63) is located in the movable cavity (66) and meshes with the second toothed rod (64) through a gear (65) rotatably disposed in the movable cavity (66). The lower end of the second toothed rod (64) is fixedly connected to the mounting seat (7) movably disposed in the movable cavity (66). Throughout the entire hoisting process, the buffer spring (47) remains in a compressed state.

5. The self-hitching and unhitching wheel pair sling according to claim 1, characterized in that: An L-shaped plate (44) is installed on the side end of the contact limiting plate (42), and an inclined guide plate (43) is connected to the lower end of the L-shaped plate (44). The distance between the upper ends of the two guide plates (43) is adapted to the distance between the outer ends of the two wheels.

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