A lifting device suitable for lifting a rail vehicle brake unit and a method of using the same

Abstract

The present invention relates to a sling suitable for hoisting a brake unit of a rail vehicle and a method for using the sling. The sling includes a hook, a limit stop, and a protective retaining ring. The top of the hook is provided with a straight limit stop, and the end of the limit stop is rotatably provided with a protective retaining ring. The sling can lift the brake unit in a substantially horizontal state, and can effectively suppress the deviation of the brake cylinder body during the hoisting process, preventing lateral tilting, making the hoisting operation simpler and more convenient, and improving the versatility of the sling. At the same time, when the sling of the present application is used for hoisting operations, one operator is reduced to assist, which reduces labor intensity, improves production efficiency, avoids paint collisions between the cylinder body and the rotating frame, ensures production quality, avoids damage to the M20 threaded hole, and reduces potential safety hazards in vehicle operation.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit vehicle equipment, specifically to the technical field of installation operations of a bogie brake unit of a rail transit vehicle, and more particularly to a hoist suitable for hoisting a rail vehicle brake unit and a method for using the hoist. Background Art

[0002] Currently, rail vehicle bogies require the installation of brake units during bogie assembly. Brake units are divided into two types: regular brake cylinders and parking brake cylinders. Both types of brake cylinders are irregular objects. The parking brake cylinder, in particular, contains a parking air chamber structure, which causes the center of gravity of the brake cylinder to deviate further from the center of gravity. If traditional lifting equipment is used to lift the brake unit, the cylinder body itself will tilt approximately 30° due to the offset center of gravity during lifting with ordinary lifting locks. This results in cumbersome installation operations, low production efficiency, and high labor intensity. In particular, the paint on the component surfaces is severely scratched. Furthermore, during assembly of the brake unit and bogie, the threaded holes in the brake unit cylinder body and the nuts can easily misalign, resulting in damage to the threads of the M20 threaded holes and posing a potential safety hazard to vehicle operation. Summary of the Invention

[0003] The purpose of the present invention is to provide a hoist suitable for lifting a brake unit of a rail vehicle and a method of using the same, which can overcome the problems of center of gravity offset and lifting tilt of the brake unit during the lifting process, and can lift the brake unit horizontally, greatly improving product quality and production efficiency.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] The present invention provides a lifting device suitable for lifting a rail vehicle brake unit, which is used to lift the upper rib of the rail vehicle brake unit, and includes a hook, a limit stop and a protective retaining ring. The top of the hook is provided with a straight limit stop, and the end of the limit stop is rotatably provided with a protective retaining ring.

[0006] For the above technical solution, the applicant has further optimization measures.

[0007] Furthermore, the hook is a nearly U-shaped hook, which includes an integrally formed vertical arm, a horizontal arm and a hook tip. The vertical arm and the hook tip are arranged on both sides of the length direction of the horizontal arm to form the U-shaped hook body. There is an arc-shaped transition between the vertical wall and the horizontal arm, and the angle between the hook tip and the horizontal arm is 80 to 95 degrees.

[0008] Optionally, the limit stop is arranged perpendicular to the top end of the vertical arm.

[0009] Furthermore, a lifting ring is provided at the connection between the limit stop and the vertical arm. The lifting ring is located at the rear side of the vertical arm and has an inclination angle of 130 to 140 degrees.

[0010] Optionally, at the end of the limit stop away from the vertical arm, a rotating pin is provided on both sides of the limit stop, and the rotating pin is arranged perpendicular to the vertical surface of the limit stop. The protective retaining ring is cylindrical, and a pin hole is provided on the bottom surface of one side of the protective retaining ring for rotating in cooperation with the rotating pin.

[0011] Furthermore, the end of the limit stop is not shorter than the hook tip in the horizontal direction.

[0012] In particular, the present application also provides a method for using a sling suitable for hoisting a rail vehicle brake unit. The sling adopts the structure described above. The specific steps of hoisting the rail vehicle brake unit include:

[0013] Step 1: Connect the lifting strap with a shackle to the lifting ring of the lifting tool;

[0014] Step 2: A lifting hole is opened on the upper part of the rail vehicle brake unit, and a rib plate is provided in the lifting hole. The lifting belt is lowered to hook the hook of the lifting device onto the rib plate;

[0015] Step 3: slowly lift the sling so that the sling is pulled up, and the protective retaining ring at the limit stop end of the sling abuts against the hole wall of the lifting hole, and the sling is continued to be pulled up to complete the lifting of the rail vehicle brake unit.

[0016] Furthermore, when the rail vehicle brake unit is in a hoisted state, the contact points between the lifting hole and the shackle, the contact points between the hook and the rib plate, and the contact points between the protective retaining ring and the inner wall of the lifting hole constitute three-point fixation, thereby completing the stable hoisting of the rail vehicle brake unit.

[0017] Optionally, the shackle is a U-shaped shackle.

[0018] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0019] The present invention discloses a lifting device and method for use suitable for lifting a rail vehicle brake unit. The lifting device utilizes a specially designed structure that enables the brake unit to be lifted in a substantially horizontal position. During the lifting process, the device effectively suppresses the deflection of the brake cylinder body and prevents lateral tilting, making the lifting operation simpler and more convenient, thereby improving the versatility of the lifting device. Furthermore, the use of the lifting device in the present invention eliminates the need for an auxiliary operator during lifting operations, reducing labor intensity, improving production efficiency, and avoiding paint collisions between the cylinder body and the rotating frame, thereby ensuring production quality. Furthermore, the device avoids damage to the M20 threaded hole, thereby reducing potential safety hazards during vehicle operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0021] Figure 1 2 is a schematic structural diagram of a lifting device suitable for lifting a brake unit of a rail vehicle according to an embodiment of the present invention;

[0022] Figure 2 This is a diagram of a first usage state of a lifting device suitable for lifting a rail vehicle brake unit according to one embodiment of the present invention;

[0023] Figure 3 1 is a diagram of a second usage state of a lifting device suitable for lifting a brake unit of a rail vehicle according to an embodiment of the present invention.

[0024] The description of the accompanying drawings is as follows:

[0025] 1. Hook, 11. Vertical arm, 12. Horizontal arm, 13. Hook tip;

[0026] 2. Limit stop, 21. Rotation pin;

[0027] 3. Protective retaining ring;

[0028] 4. Rings;

[0029] 51. Rib plate, 52. Inner wall of hanging hole. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] Example 1:

[0034] This embodiment describes a lifting device suitable for lifting a rail vehicle brake unit, which is used to lift the upper rib 51 of the rail vehicle brake unit. Figure 1 As shown, it includes a hook 1, a limit stop 2 and a protective retaining ring 3. The top of the hook 1 is provided with a straight bar-shaped limit stop 2, and the end of the limit stop 2 is rotatably provided with a protective retaining ring 3.

[0035] In this embodiment, the hook 1 is a nearly U-shaped hook, which includes an integrally formed vertical arm 11, a horizontal arm 12 and a hook tip 13. The vertical arm 11 and the hook tip 13 are arranged on both sides of the length direction of the horizontal arm 12 to form the U-shaped hook 1 body. There is an arc-shaped transition between the vertical wall and the horizontal arm 12, and the angle between the hook tip 13 and the horizontal arm 12 is 80 to 95 degrees.

[0036] Preferably, the hook tip 13 and the horizontal arm 12 are perpendicular, that is, the angle between the hook tip 13 and the horizontal arm 12 is 90 degrees, the hook tip 13 and the vertical arm 11 are parallel, the vertical arm 11 and the horizontal arm 12 are perpendicular to each other, and the turning transition between the vertical arm 11 and the horizontal arm 12 is in the arc-shaped transition state. Such a structure can ensure that the hook 1 can reliably hook the rib 51 on the upper part of the brake unit to prevent it from being unhooked.

[0037] The limit stop 2 is arranged perpendicular to the top of the vertical arm 11, and the bend of the connection between the limit stop 2 and the vertical arm 11 has an inflection point A. A block-shaped hanging plate is located at the rear side of the connection between the limit stop 2 and the vertical arm 11, and a circular through-hole is formed on the hanging plate, thereby forming a lifting ring 4 that can be connected to the sling and shackle. The circular O of the through-hole in the lifting ring 4 connecting the inflection point A is the connecting line AO. The angle between the connecting line AO ​​and the length direction of the limit stop 2 is the setting angle R of the lifting ring 4. The angle range of this angle R is 130 to 140 degrees, preferably 135 degrees. This angle design ensures that the lifting ring 4 is subjected to vertical upward tension when the lifting device lifts the brake unit. During the lifting process, the limit stop 2 can be kept in a horizontal or substantially horizontal state, thereby ensuring that the protective retaining ring 3 can always abut and push against the wall of the lifting hole of the brake unit, ensuring the stability of the lifting process and facilitating the accurate docking of the brake unit with the rotating frame and the nut fixation.

[0038] As for the setting of the protective retaining ring 3 at the limit stop 2, a rotating pin 21 is respectively provided on both sides of the end of the limit stop 2 away from the vertical arm 11. The rotating pin 21 is arranged perpendicular to the vertical surface of the limit stop 2. The protective retaining ring 3 is cylindrical, and a pin hole is provided on the bottom surface of one side of the protective retaining ring 3 for rotating in cooperation with the rotating pin 21.

[0039] As a preferred embodiment, in order to ensure that the limit stop 2 and the protective retaining ring 3 can better abut the inner wall of the lifting hole and ensure the stability of the lifting process, the end of the limit stop 2 is not shorter than the hook tip 13 in the horizontal direction, that is, the setting position of the protective retaining ring 3 should be flush with the horizontal position of the hook tip 13 or even exceed the horizontal position of the hook tip 13, so as to better suppress the occurrence of unhooking. A limit protrusion can also be set at the position where the inner wall 52 of the lifting hole abuts the protective retaining ring 3, so as to better clamp the protective retaining ring 3 during the lifting process to prevent unhooking.

[0040] The lifting ring 4, the lifting hook 1 and the limit stop 2 in the sling are integrally formed and can be directly processed and formed by cutting, stamping, casting, turning and the like. The rotating pin 21 is locked to the end of the limit stop 2 by welding, riveting and other fixing methods. While fixing the rotating pin 21, the protective retaining ring 3 is assembled and installed together at the end of the limit stop 2.

[0041] Example 2:

[0042] This embodiment describes a method for using a sling suitable for hoisting a rail vehicle brake unit. The sling adopts the structure described in Example 1. The specific steps of hoisting the rail vehicle brake unit include:

[0043] Step 1: Connect a sling with a U-shaped shackle to the lifting ring 4 of the sling;

[0044] Step 2: A lifting hole is provided on the upper part of the rail vehicle brake unit, and a rib plate 51 is provided in the lifting hole. Lower the lifting belt and hook the hook 1 of the lifting device onto the rib plate 51, as shown in FIG. Figure 2 a first use state shown;

[0045] Step 3: Slowly lift the sling so that the sling is pulled up, and the protective retaining ring 3 at the end of the limit stop 2 of the sling abuts against the hole wall of the sling hole, which is as follows Figure 3 The second usage state shown is maintained and the lifting belt is continuously pulled up to complete the lifting of the rail vehicle brake unit.

[0046] When the rail vehicle brake unit is in the hoisting state, the contact points between the lifting hole and the shackle, the contact points between the hook 1 and the rib 51, and the contact points between the protective retaining ring 3 and the inner wall 52 of the lifting hole form a three-point fixation, completing the stable lifting of the rail vehicle brake unit. At the same time, because the sling in this embodiment sets the inclination angle between the lifting ring 4 and the limit stop 2 to 135 degrees, the lifting ring 4 is subjected to a vertical upward pulling force when the sling lifts the brake unit. During the lifting process, the limit stop 2 can be kept in a horizontal or substantially horizontal state, and then the brake unit's own weight is used to form a self-locking state, ensuring that the protective retaining ring 3 can always abut and push against the wall of the lifting hole of the brake unit, ensuring the stability of the lifting process and facilitating the accurate docking of the brake unit and the nut fixation in the later stage.

[0047] In summary, the sling provided by the present application and its method of use for hoisting rail vehicle brake units adopts a specially designed structure that can lift the brake unit in a substantially horizontal state. During the hoisting process, it can effectively suppress the deviation of the brake cylinder body and prevent lateral tilting, making the hoisting operation simpler and more convenient, and improving the versatility of the sling. At the same time, when using the sling of the present application for hoisting operations, one operator is reduced to assist, reducing labor intensity, improving production efficiency, and avoiding paint collisions between the cylinder body and the rotating frame, thereby ensuring production quality. It also avoids damage to the M20 threaded hole and reduces potential safety hazards in vehicle operation.

[0048] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lifting device suitable for lifting a rail vehicle brake unit, used for lifting the upper rib of a rail vehicle brake unit, characterized in that: It includes a hook, a limit stop and a protective retaining ring. The top of the hook is provided with a straight limit stop, and the end of the limit stop is rotatably provided with a protective retaining ring. The hook is a nearly U-shaped hook, comprising an integrally formed vertical arm, a horizontal arm, and a hook tip. The vertical arm and the hook tip are arranged on both sides of the horizontal arm in the length direction to form the U-shaped hook body. There is an arc-shaped transition between the vertical wall and the horizontal arm. The angle between the hook tip and the horizontal arm is 80 to 95 degrees. The limit stop is arranged perpendicular to the top end of the vertical arm, and the end of the limit stop is not shorter than the hook tip in the horizontal direction. A lifting ring is provided at the connection between the limit stop and the vertical arm. The lifting ring is located on the rear side of the vertical arm and has an inclination angle of 130 to 140 degrees.

2. The lifting device for lifting a rail vehicle brake unit according to claim 1, characterized in that: At the end of the limit stop away from the vertical arm, a rotating pin is provided on both sides of the limit stop, and the rotating pin is provided perpendicular to the vertical surface of the limit stop. The protective retaining ring is cylindrical, and a pin hole is provided on the bottom surface of one side of the protective retaining ring for rotating in cooperation with the rotating pin.

3. A method for using a sling suitable for hoisting a rail vehicle brake unit, characterized in that: The lifting device adopts the structure as claimed in claim 1 or 2, and the specific steps of lifting the rail vehicle brake unit include: Step 1: Connect the lifting strap with a shackle to the lifting ring of the lifting tool; Step 2: A lifting hole is opened on the upper part of the rail vehicle brake unit, and a rib plate is provided in the lifting hole. The lifting belt is lowered to hook the hook of the lifting device onto the rib plate; Step 3: slowly lift the sling so that the sling is pulled up, and the protective retaining ring at the limit stop end of the sling abuts against the hole wall of the lifting hole, and the sling is continued to be pulled up to complete the lifting of the rail vehicle brake unit.

4. The method for using a sling suitable for slinging a rail vehicle brake unit according to claim 3, characterized in that: When the rail vehicle brake unit is in a hoisted state, the contact points between the lifting hole and the shackle, the contact points between the hook and the rib plate, and the contact points between the protective retaining ring and the inner wall of the lifting hole form three-point fixation to complete the stable hoisting of the rail vehicle brake unit.

5. The method for using a sling suitable for slinging a rail vehicle brake unit according to claim 3, characterized in that: The shackle is a U-shaped shackle.

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