Self-adjusting wheel pair hanger

Abstract

The application discloses a self-adaptive adjusting type wheel set lifting appliance, relates to the technical field of wheel set lifting, and comprises a crossbeam provided with lifting lugs, two lifting rods installed on the crossbeam and two lifting hanging parts installed at the lower ends of the two lifting rods respectively, the lifting hanging parts are used for bearing hoisted objects, and the application further comprises an inner abutting adjusting unit which is used for automatically adapting and adjusting wheel sets with different lengths and abutting and positioning the inner sides of two wheels on the wheel sets. The application has the advantages that the inner abutting adjusting unit is arranged, the wheel sets with different lengths can be automatically adapted and adjusted, unnecessary troubles caused by manual or electric adjusting are avoided, the inner sides of the two wheels on the wheel sets can be automatically abutted and positioned, the wheel sets can be guaranteed to have good stability when being lifted in the air, the wheel sets are not prone to falling from the lifting appliance, and the safety is high.

Description

Technical Field

[0001] This invention relates to the field of wheelset lifting technology, and in particular to an adaptive adjustable 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] During wheelset production, a lifting device is needed to lift the wheelsets. The lifting device includes a crossbeam with lifting lugs, two lifting rods, and a hanging part installed at the lower end of the two lifting rods. During lifting, the two hanging parts (i.e., hooks) that contact the wheelset axle cannot automatically adapt and adjust the contact support points according to the actual needs of wheelsets of different lengths (including wheels and axles). Existing methods generally require manual or electric adjustment of the distance between the two hanging parts to ensure that the distance between the two contact support points is long enough to ensure the stability of the wheelset during lifting. However, manual or electric adjustment is relatively cumbersome. Therefore, this application provides an adaptive adjustable wheelset lifting device to meet the requirements. Summary of the Invention

[0004] The purpose of this application is to provide an adaptive adjustable wheelset spreader to solve the technical problem of operational inconvenience caused by the need for manual or electric adjustment to adapt to wheelsets of different lengths.

[0005] To achieve the above objectives, this application provides the following technical solution: an adaptive adjustable wheelset lifting device, comprising a crossbeam with lifting lugs, two lifting rods mounted on the crossbeam, and two hanging parts respectively mounted on the lower ends of the two lifting rods. The hanging parts are used to carry the object being lifted. It also includes an inner contact adjustment unit for automatically adapting and adjusting wheelsets of different lengths and for contact positioning of the inner sides of the two wheels on the wheelset.

[0006] In a preferred embodiment of this invention, the inner contact adjustment unit comprises two rotating shafts arranged left and right, with a weight mounted on each shaft. An outer movable rod and an inner movable rod are rotatably mounted on each shaft. The lower end of the outer movable rod is rotatably connected to the side wall of the crossbeam. A wheel set is provided below the lower end of each inner movable rod. The wheel set includes three inclined mounting shafts, all rotatably connected by a connecting rod. At least two traveling wheels are mounted on the two outer mounting shafts. Multiple traveling wheels are disposed within a rectangular inclined cavity formed between the limiting beam and the bottom of the crossbeam's inner cavity. The two rectangular inclined cavities are arranged in a figure-eight shape, and the inclination angle of the rectangular inclined cavity is consistent with the inclination angle of the three mounting shafts. The lower end of the inner movable rod is rotatably connected to the mounting shaft located in the middle. The suspension rod is rotatably mounted on the mounting shaft located in the middle. The bottom of the crossbeam has an movable opening adapted to the suspension rod. The suspension part includes a C-shaped suspension plate, and a C-shaped abutment plate is fixed on the end of the suspension plate opposite to the wheel, and the C-shaped cavity of the abutment plate is larger than the C-shaped cavity of the suspension plate.

[0007] As a preferred embodiment of this invention, a self-locking unit is also included. When the suspension part does not suspend the wheelset, the wheelset is locked and cannot move, preventing the wheelset from swaying and colliding during the movement of the crossbeam, and preventing the crossbeam from becoming unbalanced. When the wheelset is suspended, the wheelet lock is automatically released.

[0008] In a preferred embodiment of this invention, the self-locking unit includes two sleeves rotatably mounted on corresponding mounting shafts. The upper end of the boom is vertically mounted to the lower end of one of the sleeves. Both sleeves are fixed to a mounting plate. A self-locking spring is mounted on the mounting plate, and a self-locking rod is fixed to the upper end of the self-locking spring. A pressing bevel is provided on the side end of the self-locking rod. The upper end of the self-locking rod penetrates the mounting plate. A movable opening and a self-locking groove adapted to the self-locking rod are provided on the corresponding limiting beam. A pull rope is fixed to the lower end of the self-locking rod, and the pull rope is sleeved on two guide wheels fixedly connected to the mounting plate. The boom includes a fixed rod connected to a sleeve. The lower end of the fixed rod is fixedly connected to a baffle via a buffer spring. The baffle is fixed to the upper end of the moving rod. A retaining ring is slidably sleeved on the moving rod. The upper end of the retaining ring is fixedly connected to the mounting ring of the fixed rod via multiple connecting rods. The lower end of the pull rope passes through the mounting ring and is fixedly connected to the upper end of the baffle.

[0009] In a preferred embodiment of this invention, the inner cavity of the hanging plate is provided with two sets of parallel ball bearing groups, and each ball bearing group consists of multiple balls arranged in a straight line.

[0010] As a preferred embodiment of this invention, a damage prevention unit is also included to prevent the wheelset from being too heavy, which would cause excessive pressure on individual balls and damage them.

[0011] In a preferred embodiment of this invention, the damage prevention unit includes two housings disposed at the bottom of the hanging plate, and each housing corresponds one-to-one with two sets of ball bearings. Each housing has a plurality of lifting springs fixed in its inner cavity, and the plurality of ball bearings are mounted on the upper end of the corresponding lifting spring.

[0012] In summary, the technical effects and advantages of this invention are as follows: The present invention has a reasonable structure and is equipped with an internal contact adjustment unit, which can automatically adapt and adjust to wheelsets of different lengths, avoiding the unnecessary trouble caused by manual or electric adjustment. At the same time, it can automatically contact and position the inner sides of the two wheels on the wheelset, so that the wheelset can ensure good stability when suspended and transported, and is not easy to fall off the lifting device, thus ensuring high safety. In this invention, a self-locking unit is provided. When the lifting device is unloaded, the wheel set can be locked and cannot move, preventing the wheel set from swaying and colliding during the movement of the crossbeam, and causing the crossbeam to become unbalanced. When the wheel set is being hoisted, the wheel set lock is automatically released. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 Schematic diagram of the front cross-section of the central beam; Figure 3 for Figure 1 A partial structural diagram of the internal resistance adjustment unit; Figure 4 This is a schematic diagram of the three self-locking units and their partially enlarged structures; Figure 5 for Figure 1 Schematic diagram of the central suspension section; Figure 6 for Figure 5A partial structural diagram of the central suspension section.

[0015] In the diagram: 1. Crossbeam; 2. Hanging rod; 3. Suspension part; 4. Internal contact adjustment unit; 5. Self-locking unit; 21. Fixed rod; 22. Moving rod; 23. Retaining ring; 24. Baffle; 25. Buffer spring; 26. Connecting rod; 31. Hanging plate; 32. Contact plate; 33. Ball bearing assembly; 34. Housing; 35. Lifting spring; 41. Rotating shaft; 42. Outer movable rod; 43. Weight; 44. Limiting beam; 45. Rectangular inclined cavity; 46. Inner movable rod; 47. Mounting shaft; 48. Connecting rod; 49. Traveling wheel; 410. Universal ball bearing; 51. Sleeve; 52. Mounting plate; 53. Guide wheel; 54. Self-locking rod; 55. Extrusion slope; 56. Self-locking spring; 57. Self-locking groove; 58. Pull rope. Detailed Implementation

[0016] 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.

[0017] Example: Reference Figure 1-2 The adaptive adjustable wheelset lifting device shown includes a crossbeam 1 with lifting lugs, two lifting rods 2 mounted on the crossbeam 1, and two hanging parts 3 respectively mounted on the lower ends of the two lifting rods 2. The hanging parts 3 are used to carry the object being lifted. It also includes an inner contact adjustment unit 4, which is used to automatically adapt and adjust wheelsets of different lengths and to position the inner sides of the two wheels on the wheelset in contact.

[0018] As a preferred embodiment of this example, Figure 1-3 and Figure 5As shown, the inner contact adjustment unit 4 includes two rotating shafts 41 arranged left and right. A weight 43 is installed on the two rotating shafts 41. An outer movable rod 42 and an inner movable rod 46 are rotatably installed on each of the two rotating shafts 41. The lower end of the outer movable rod 42 is rotatably connected to the side wall of the crossbeam 1. A wheel set is provided below the lower end of each inner movable rod 46. The wheel set includes three mounting shafts 47 arranged at an angle. The three mounting shafts 47 are rotatably connected by a connecting rod 48. At least two traveling wheels 49 are installed on the two outer mounting shafts 47. The multiple traveling wheels 49 are set in a rectangular inclined cavity 45 formed between the limiting beam 44 and the bottom of the inner cavity of the crossbeam 1. The two rectangular inclined cavities 45 are arranged in a figure-eight shape. The inclination angle of the rectangular inclined cavity 45 is consistent with the inclination angle of the three mounting shafts 47. The lower end of the inner movable rod 46 is rotatably connected to the mounting shaft 47 located in the middle. The hanging rod 2 is rotatably installed on the mounting shaft 47 located in the middle. The bottom of the crossbeam 1 is provided with an movable opening adapted to the hanging rod 2. The suspension part 3 includes a C-shaped suspension plate 31, and a C-shaped contact plate 32 is fixed on the end of the suspension plate 31 opposite to the wheel. The C-shaped cavity of the contact plate 32 is larger than the C-shaped cavity of the suspension plate 31.

[0019] Initially, the weight 43 causes the wheelset to contact the support block located in the middle of the inner cavity of the crossbeam 1. During use, the crossbeam 1 is suspended from the trolley 1 by two chains, and the trolley is moved by the trolley controller, so that the axle of the wheelset is located in the receiving cavity of the hanging plate 31. At this time, the crossbeam 1 is moved upward. During this process, the inner wall of the hanging plate 31 will contact the outer wall of the axle of the wheelset. Through the pulling force of the wheelset on the hanging plate 31, the suspension rod 2 can move from the inside to the outside along the inclined surface at the bottom of the crossbeam 1. That is, the two hanging plates 31 will move laterally in opposite directions along the axle. This allows the two contact plates 32 to contact the inner wall of the wheel respectively. As the crossbeam 1 continues to rise, the wheelset will be lifted. At this time, the weight of the wheelset is completely distributed by the two lifting plates 31 and converted into a contact force on the wheel, which ensures good stability of the wheelset when it is suspended and transported, making it less likely to fall off the lifting device and ensuring high safety. Moreover, the contact plates 32 can automatically move laterally and contact the wheel through the cooperation of the weight of the wheelset, the weight 43, the wheel set and the rectangular inclined cavity 45. This allows for adaptive adjustment of wheelsets of different lengths, avoiding unnecessary trouble caused by manual or electric adjustment.

[0020] It should be noted that the mounting point of the wheel on the upper axle is provided with a mounting step. The purpose of the C-shaped cavity of the contact plate 32 being larger than that of the hanging plate 31 is to allow the step to move into the C-shaped cavity of the contact plate 32 without obstructing the movement of the hanging plate 31, so that the contact plate 32 can come into contact with the inner wall of the wheel.

[0021] As a preferred embodiment of this example, Figure 3 As shown, it also includes a self-locking unit 5. When the suspension part 3 does not suspend the wheelset, the wheelset is locked and cannot move, preventing the wheelset from swaying and colliding during the movement of the crossbeam 1 and causing imbalance of the crossbeam 1. When the wheelset is suspended, the wheelset lock is automatically released.

[0022] When the lifting device is unloaded, the swaying of the crossbeam 1 during movement will cause the wheel assembly to sway. The swaying of the wheel assembly can easily cause the crossbeam to become unbalanced and collide with the crossbeam 1. Therefore, a self-locking unit 5 is set up to solve this problem.

[0023] As a preferred embodiment of this example, Figure 2-4 As shown, the self-locking unit 5 includes two sleeves 51 that are rotatably mounted on corresponding mounting shafts 47. The upper end of the rod 2 is vertically mounted to the lower end of one of the sleeves 51. Both sleeves 51 are fixed on the mounting plate 52. A self-locking spring 56 is mounted on the mounting plate 52, and a self-locking rod 54 is fixed to the upper end of the self-locking spring 56. A pressing slope 55 is provided on the side end of the self-locking rod 54. The upper end of the self-locking rod 54 passes through the mounting plate 52. A movable opening and a self-locking groove 57 that are adapted to the self-locking rod 54 are provided on the corresponding limiting beam 44. A pull rope 58 is fixed to the lower end of the self-locking rod 54, and the pull rope 58 is sleeved on two guide wheels 53 that are fixedly connected to the mounting plate 52. The boom 2 includes a fixed rod 21 connected to the sleeve 51. The lower end of the fixed rod 21 is fixedly connected to the baffle 24 via a buffer spring 25. The baffle 24 is fixed to the upper end of the moving rod 22. A retaining ring 23 is slidably sleeved on the moving rod 22. The upper end of the retaining ring 23 is fixedly connected to the mounting ring of the fixed rod 21 via multiple connecting rods 26. The lower end of the pull rope 58 passes through the mounting ring and is fixedly connected to the upper end of the baffle 24.

[0024] When the spreader is unloaded, the weight of the load 43 causes the inner movable rod 46 to move the wheel assembly closer to the self-locking groove 57. The inclined surface of the self-locking rod 54 on the wheel assembly will contact the limiting beam 44 and form a compression, eventually causing the self-locking rod 54 to move into the self-locking groove 57 (at this time, the side end of the wheel assembly abuts against the support block). The wheel assembly is locked, so that when the spreader is unloaded and swaying, it will not cause the crossbeam 1 to become unbalanced or collide. Before the wheelset is lifted, specifically before the lifting plate 31 moves laterally relative to the axle, as the force on the lifting plate 31 increases, the moving rod 22 will move downward relative to the fixed rod 21 to stretch the buffer spring 25, and eventually the lower end of the baffle 24 will contact the upper end of the retaining ring 23 to form support. During this process, the downward movement of the baffle 24 will drive the self-locking rod 54 to move downward and move out of the self-locking groove 57 through the pull rope 58. At this time, the wheelset positioning is released, and the lifting plate 31 can move laterally relative to the axle. After the wheelset is lifted, the self-locking rod 54 and the moving rod 22 will return to their original positions through the elastic force of the self-locking spring 56 and the buffer spring 25.

[0025] As a preferred embodiment of this example, Figure 5 As shown, the inner cavity of the hanging plate 31 is provided with two sets of parallel ball bearing groups 33, and each ball bearing group 33 is composed of multiple balls arranged in a straight line.

[0026] The ball bearings are designed to reduce the friction between the hanging plate 31 and the axle, which helps to promote the lateral movement of the hanging plate 31 relative to the axle while preventing wear on the axle. The two sets of parallel ball bearing sets 33 can provide good and stable support for the lower sides of the axle.

[0027] As a preferred embodiment of this example, Figure 6 As shown, it also includes a damage prevention unit to prevent excessive weight of the wheelset from causing excessive pressure on individual balls and resulting in damage to the balls.

[0028] As a preferred embodiment of this example, Figure 6 As shown, the damage prevention unit includes two housings 34 located at the bottom of the hanging plate 31, and each housing 34 corresponds to two ball bearing groups 33. Each housing 34 has multiple lifting springs 35 fixed inside its cavity, and multiple balls are installed on the upper end of the corresponding lifting springs 35.

[0029] When the balls on the suspension plate 31 come into contact with the wheelset (at this time the wheelset has not yet been suspended), the control beam 1 continues to rise. When the side end of the contact plate 32 comes into contact with the inside of the wheel, as the contact force acting on the balls increases, the lifting spring 35 will be compressed. Before the wheelset is suspended, the balls will move into the inner cavity of the housing 34. The axle of the wheelset contacts the suspension plate 31 to share the support force, which can effectively prevent the balls from being damaged due to excessive force.

[0030] 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. An adaptive adjustable wheelset lifting device, comprising a crossbeam (1) with lifting lugs, two lifting rods (2) mounted on the crossbeam (1), and two hanging parts (3) respectively mounted on the lower ends of the two lifting rods (2), the hanging parts (3) being used to carry the object being lifted, characterized in that: It also includes an inner contact adjustment unit (4), which is used to automatically adapt and adjust wheelsets of different lengths and to position the inner sides of the two wheels on the wheelset in contact. The inner contact adjustment unit (4) includes two rotating shafts (41) arranged left and right. A weight (43) is installed on the two rotating shafts (41). An outer movable rod (42) and an inner movable rod (46) are rotatably arranged on each of the two rotating shafts (41). The lower end of the outer movable rod (42) is rotatably connected to the side wall of the crossbeam (1). A wheel set is provided below the lower end of each inner movable rod (46). The wheel set includes three mounting shafts (47) arranged at an angle. The three mounting shafts (47) are rotatably connected by a connecting rod (48). The two outer mounting shafts (47) are each equipped with a weight (43). There are at least two walking wheels (49), and multiple walking wheels (49) are all set in a rectangular inclined cavity (45) formed between the limiting beam (44) and the bottom of the inner cavity of the crossbeam (1). The two rectangular inclined cavities (45) are arranged in a figure-eight shape. The inclination angle of the rectangular inclined cavity (45) is consistent with the inclination angle of the three mounting shafts (47). The lower end of the inner movable rod (46) is rotatably connected to the mounting shaft (47) located in the middle. The hanging rod (2) is rotatably installed on the mounting shaft (47) located in the middle. The bottom of the crossbeam (1) is provided with an movable opening adapted to the hanging rod (2). The suspension part (3) includes a C-shaped suspension plate (31), and a C-shaped contact plate (32) is fixed on the end of the suspension plate (31) opposite to the wheel. The C-shaped cavity of the contact plate (32) is larger than the C-shaped cavity of the suspension plate (31).

2. The adaptive adjustable wheelset lifting device according to claim 1, characterized in that: It also includes a self-locking unit (5). When the suspension part (3) does not suspend the wheelset, the wheelset is locked and cannot move, preventing the wheelset from swaying and causing collisions and imbalance of the beam (1) during the movement of the crossbeam (1). When the wheelset is suspended, the wheelset lock is automatically released.

3. The adaptive adjustable wheelset lifting device according to claim 2, characterized in that: The self-locking unit (5) includes two sleeves (51) that are rotatably mounted on the corresponding mounting shaft (47). The upper end of the rod (2) is vertically mounted to the lower end of one of the sleeves (51). Both sleeves (51) are fixed on the mounting plate (52). A self-locking spring (56) is mounted on the mounting plate (52). A self-locking rod (54) is fixed to the upper end of the self-locking spring (56). A pressing slope (55) is provided on the side end of the self-locking rod (54). The upper end of the self-locking rod (54) passes through the mounting plate (52). A movable opening and a self-locking groove (57) that are adapted to the self-locking rod (54) are provided on the corresponding limiting beam (44). A pull rope (58) is fixed to the lower end of the self-locking rod (54). The pull rope (58) is sleeved on two guide wheels (53) that are fixedly connected to the mounting plate (52). The boom (2) includes a fixed rod (21) connected to the sleeve (51). The lower end of the fixed rod (21) is fixedly connected to the baffle (24) by a buffer spring (25). The baffle (24) is fixed to the upper end of the moving rod (22). A retaining ring (23) is slidably sleeved on the moving rod (22). The upper end of the retaining ring (23) is fixedly connected to the mounting ring of the fixed rod (21) by multiple connecting rods (26). The lower end of the pull rope (58) passes through the mounting ring and is fixedly connected to the upper end of the baffle (24).

4. The adaptive adjustable wheelset lifting device according to claim 1, characterized in that: The inner cavity of the hanging plate (31) is provided with two sets of parallel ball bearing groups (33), and each ball bearing group (33) consists of multiple balls arranged in a straight line.

5. The adaptive adjustable wheelset lifting device according to claim 4, characterized in that: It also includes a damage prevention unit to prevent excessive weight of the wheelset from causing excessive pressure on individual balls and damaging them.

6. The adaptive adjustable wheelset lifting device according to claim 5, characterized in that: The damage prevention unit includes two housings (34) disposed at the bottom of the hanging plate (31), and each housing (34) corresponds to one of the two ball bearing groups (33). Each housing (34) has multiple lifting springs (35) fixed in its inner cavity, and the multiple balls are installed on the upper end of the corresponding lifting springs (35).

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