Hoisting tool

Abstract

The utility model relates to the technical field of maintenance tools for brake cylinder pistons of trains, in particular to a hoisting tool, which comprises two hinged rods, a hook is arranged at the end of one rod, and when the brake cylinder piston is hooked through the hook, the brake cylinder piston can be hoisted by the aid of an eccentric structure of the brake cylinder piston. The brake cylinder piston fixing device has the advantages that the brake cylinder piston fixing device is simple in structure, the brake cylinder piston only needs to be hooked by the hook when the brake cylinder piston fixing device is used, and the brake cylinder piston fixing device is convenient to operate and high in safety. Further, in some scenarios, the hook-free end of the second rod is hinged to the second end of the first rod, and the length of the second rod is shorter than the length of the first rod. The arrangement has the advantages that the second rod and the third section of the first rod can form a neutral gear, the third section of the first rod can abut against the outer surface of the piston body, and the brake cylinder piston can be clamped conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance tools for train brake cylinder pistons, and particularly to a lifting tool. Background Art

[0002] A train brake cylinder piston is a component that provides braking force for a train. Due to its high usage rate and its relation to train running safety, it is a key item to be dealt with during train maintenance. The train brake cylinder piston is large in volume, heavy in weight, and has an eccentric structure. Therefore, it is not convenient for lifting and transportation.

[0003] Currently, for a train brake cylinder piston, it is usually transferred by a crane after being fastened by a sling. Whether the sling is firmly fastened and whether the center of gravity is properly handled are important safety control points during the lifting and transportation processes.

[0004] Based on this, it is necessary to develop a tool that is convenient for lifting a train brake cylinder piston. Summary of the Utility Model

[0005] The embodiment of the utility model provides a lifting tool, which is used to solve the problem that it is inconvenient to lift a train brake cylinder piston in the prior art.

[0006] In a first aspect, the embodiment of the utility model provides a lifting tool for lifting a brake cylinder piston. The brake cylinder piston includes a piston and a piston rod fixedly connected to the piston. One side of the piston body connecting the piston rod is a concave surface. The lifting tool includes: a first rod and a second rod;

[0007] The first rod includes a first section, a second section, and a third section integrally formed. The second section is bent relative to the first section in a first direction, and the third section is bent relative to the second section in a second direction. The first direction is opposite to the second direction;

[0008] The first end of the second rod is hinged to the first rod, and a hook bent towards the first rod is provided at the second end of the second rod.

[0009] In some possible implementation manners, the second rod includes a fourth section and a fifth section;

[0010] The first end of the fourth section is hinged to the first rod, the second end of the fourth section is threadedly connected to the first end of the fifth section, and a hook is provided at the second end of the fifth section.

[0011] In some possible implementation manners, the lifting tool further includes a lock nut, and the lock nut is threadedly connected to the external thread of the second end of the fourth section or the external thread of the first end of the fifth section.

[0012] In some possible implementation manners, the first end of the second rod is hinged to the second section of the first rod.

[0013] In some possible implementation manners, the length of the second rod is shorter than the length of the first rod.

[0014] In some possible implementation manners, the second end of the fourth section is a screw rod, and the first end of the fifth section is provided with a threaded hole, and the second end of the fourth section is threadedly connected to the threaded hole of the fifth section.

[0015] In some possible implementation manners, the second end of the fourth section is provided with a threaded hole, and the first end of the fifth section is a screw rod, and the first end of the fifth section is threadedly connected to the threaded hole of the fourth section.

[0016] In some possible implementation manners, the lifting tool further includes a sling or a hook, and one end of the sling or the hook is fixedly connected to the first section.

[0017] In some possible implementation manners, one end of the first section is provided with a threaded hole, the sling or the hook is provided with a screw rod, and the screw rod of the sling or the hook is threadedly connected to the threaded hole of the first section.

[0018] In some possible implementation manners, the first rod includes a hinge shaft, the first rod and the second rod are respectively provided with holes, and the hinge shaft penetrates through the first rod and the second rod.

[0019] The beneficial effects of the embodiments of the present utility model compared with the prior art are as follows:

[0020] The embodiments of the present utility model disclose a lifting tool, which includes two hinged rods, and a hook is provided at the end of one of the rods. When the brake cylinder piston is hooked by the hook, relying on the eccentric structure of the brake cylinder piston, the rod with the hook at the end rotates towards the other rod, and finally the brake cylinder piston is clamped by the two rods, completing the fixation of the brake cylinder piston. The embodiments of the present utility model have a simple structure. When in use, only need to hook the brake cylinder piston with the hook, the operation is convenient and the safety is high. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1It is the schematic diagram of the hoisting tool provided by the embodiment of the present utility model;

[0023] Figure 2 It is the schematic cross-sectional view of the brake cylinder piston provided by the embodiment of the present utility model.

[0024] In the figure:

[0025] 110 The first section;

[0026] 120 The second section;

[0027] 130 The third section;

[0028] 140 The fourth section;

[0029] 150 The fifth section;

[0030] 160 Hook;

[0031] 170 Hinge shaft;

[0032] 210 Lock nut;

[0033] 310 Eye ring;

[0034] 410 Piston body;

[0035] 420 Piston rod. Specific embodiments

[0036] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present utility model. However, those skilled in the art should clearly understand that the present utility model can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, and methods are omitted to avoid unnecessary details from interfering with the description of the present utility model.

[0037] In order to make the purpose, technical solutions, and advantages of the present utility model clearer, the following will be described through specific embodiments with reference to the accompanying drawings.

[0038] The following details the embodiments of the present utility model. This example is implemented on the premise of the technical solution of the present utility model, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present utility model is not limited to the following embodiments.

[0039] As Figure 1-2 shown, it shows the schematic diagram of the hoisting tool provided by the first aspect of the embodiment of the present utility model, which is described in detail as follows:

[0040] A hoisting tool for hoisting a brake cylinder piston, the brake cylinder piston including a piston body 410 and a piston rod 420 fixedly connected to the piston body 410, one side of the piston body 410 connecting the piston rod 420 being a concave surface, the hoisting tool including: a first rod and a second rod;

[0041] The first rod includes a first section 110, a second section 120, and a third section 130 integrally formed. The second section 120 is bent relative to the first section 110 in a first direction, and the third section 130 is bent relative to the second section 120 in a second direction, the first direction being opposite to the second direction;

[0042] The first end of the second rod is hinged to the first rod, and a hook 160 bent towards the first rod is provided at the second end of the second rod.

[0043] Exemplarily, as Figure 2 shown, the figure shows a brake cylinder piston, which includes a piston body 410 and a piston rod 420 fixedly connected to the concave surface of the piston cylinder body. It can be seen from the figure that this brake cylinder piston is an eccentric structure. As mentioned above, when this brake cylinder piston is relatively large in volume, it brings inconvenience to handling and transportation.

[0044] Based on this, an embodiment of the present invention provides a hoisting tool, which is composed of a first rod integrally formed and in an S shape, a second rod hinged to the first rod, and a hook 160 provided at the free moving end of the second rod.

[0045] When applying the hoisting tool, first hook the concave surface of the piston body 410 with the hook 160 of the second rod, that is, the side connecting the piston rod 420. Then, when lifting upward through the second rod, due to the eccentric structure of the brake cylinder piston, under the action of eccentricity, the second rod rotates around its hinge point until the other side of the piston body 410, that is, the opposite side of the concave surface of the piston body 410, abuts against the lower end of the first rod. The brake cylinder piston is clamped by the hook 160 of the first rod and the end of the third section 130 of the second rod, completing the fixation of the brake cylinder piston.

[0046] The hoisting tool of the present invention includes two hinged rods, and a hook 160 is provided at the end of one of the rods. When hoisting the brake cylinder piston with the hook 160, relying on the eccentric structure of the brake cylinder piston, the rod with the hook 160 at the end rotates towards the other rod, and finally the brake cylinder piston is clamped by the two rods, completing the fixation of the brake cylinder piston. The embodiment of the present invention has a simple structure. When in use, it only needs to hook the hook 160 on the brake cylinder piston, with convenient operation and high safety.

[0047] In some embodiments, the second rod includes a fourth section 140 and a fifth section 150;

[0048] The first end of the fourth section 140 is hinged to the first rod, the second end of the fourth section 140 is threadedly connected to the first end of the fifth section 150, and a hook 160 is provided at the second end of the fifth section 150.

[0049] Exemplarily, in some application scenarios, the rod with the hook 160 is a structure with adjustable length. One application is to divide the second rod into two sections connected by threads, and adjust the length of the second rod by adjusting the length of the threaded connection to adapt to brake cylinder pistons of different specifications.

[0050] In some embodiments, the hoisting tool further includes a lock nut 210, and the lock nut 210 is threadedly connected to the external thread at the second end of the fourth section 140 or the external thread at the first end of the fifth section 150.

[0051] Exemplarily, generally speaking, when the hook 160 of the second rod is in the same plane as the two rods, the operation is the most convenient and the safety is the highest. When the second rod is a two-section structure connected by threads, a lock nut 210 is provided on the section with a screw rod to lock the adjusted length of the second rod and prevent the hook 160 from rotating, ensuring safety and convenience.

[0052] In some embodiments, the first end of the second rod is hinged to the second section 120 of the first rod.

[0053] In some embodiments, the length of the second rod is shorter than the length of the first rod.

[0054] Exemplarily, in terms of the selection of the hinge point, a preferred way is to hinge the end of the second rod without the hook 160 to the second end of the first rod, and the length of the second rod is shorter than the length of the first rod.

[0055] The advantage of such a setting is that the second rod can form a clearance with the third section 130 of the first rod, enabling the third section 130 of the first rod to abut against the outer surface of the piston body 410 to facilitate clamping the brake cylinder piston.

[0056] In some embodiments, the second end of the fourth section 140 is a screw rod, the first end of the fifth section 150 is provided with a threaded hole, and the second end of the fourth section 140 is threadedly connected to the threaded hole of the fifth section 150.

[0057] In some embodiments, the second end of the fourth section 140 is provided with a threaded hole, the first end of the fifth section 150 is a screw rod, and the first end of the fifth section 150 is threadedly connected to the threaded hole of the fourth section 140.

[0058] Exemplarily, in the second rod threaded connection method, there are usually two methods. One is that the fourth section 140 is a screw rod, and the fifth section 150 is provided with a threaded hole, and the two are threadedly connected. The other is that the fifth section 150 is a screw rod, and the fourth section 140 is provided with a threaded hole, and the two are threadedly connected. Figure 1 The method shown in Figure 1 is that the fourth section 140 is a screw rod.

[0059] In some embodiments, the hoisting tool further includes a lifting ring 310 or a hook, and one end of the lifting ring 310 or the hook is fixedly connected to the first section 110.

[0060] In some embodiments, one end of the first section 110 is provided with a threaded hole, the lifting ring 310 or the hook is provided with a screw rod, and the screw rod of the lifting ring 310 or the hook is threadedly connected to the threaded hole of the first section 110.

[0061] Exemplarily, in some application scenarios, a lifting ring 310 or a hook is provided at the upper end of the first rod. Generally, a threaded hole is provided at the upper end of the first section 110 of the first rod, and the lifting ring 310 or the hook is screwed into the threaded hole to facilitate the connection of the hoisting tool to other equipment, such as a crane.

[0062] In some embodiments, the first rod includes a hinge shaft 170, the first rod and the second rod are respectively provided with holes, and the hinge shaft 170 penetrates through the first rod and the second rod.

[0063] In one scenario, holes are provided on the first rod and the second rod, and the hinge is completed by passing the hinge shaft 170 or a pin through the two holes.

[0064] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

[0065] The following are the device embodiments of the present invention. For the details not described in detail, reference can be made to the corresponding method embodiments above.

Claims

1. A lifting tool, characterized in that: Used for hoisting a brake cylinder piston, the brake cylinder piston comprising: a piston body (410) and a piston rod (420) fixedly connected to the piston body (410), the side of the piston body (410) connected to the piston rod (420) being a concave surface, and the hoisting tool comprising: a first rod and a second rod; The first rod comprises: an integrally formed first section (110), a second section (120) and a third section (130), the second section (120) being bent in a first direction relative to the first section (110), the third section (130) being bent in a second direction relative to the second section (120), the first direction being opposite to the second direction; The first end of the second rod is hinged to the first rod, and the second end of the second rod is provided with a hook (160) bent toward the first rod.

2. The lifting tool according to claim 1, characterized in that: The second rod comprises a fourth section (140) and a fifth section (150); The first end of the fourth section (140) is hinged to the first rod, the second end of the fourth section (140) is threadedly connected to the first end of the fifth section (150), and the second end of the fifth section (150) is provided with a hook (160).

3. The lifting tool according to claim 2, characterized in that: The lifting tool further comprises a lock nut (210), wherein the lock nut (210) is threadedly connected to the external thread at the second end of the fourth section (140) or the external thread at the first end of the fifth section (150).

4. The lifting tool according to claim 1, characterized in that: The first end of the second rod is hinged to the second section (120) of the first rod.

5. The lifting tool according to claim 1, characterized in that: The second rod length is shorter than the first rod length.

6. The lifting tool according to claim 2, characterized in that: The second end of the fourth section (140) is a screw rod, the first end of the fifth section (150) is provided with a threaded hole, and the second end of the fourth section (140) is threadedly connected to the threaded hole of the fifth section (150).

7. The lifting tool according to claim 2, characterized in that: The second end of the fourth section (140) is provided with a threaded hole, the first end of the fifth section (150) is a screw rod, and the first end of the fifth section (150) is threadedly connected to the threaded hole of the fourth section (140).

8. The lifting tool according to claim 1, characterized in that: The lifting tool further comprises a lifting ring (310) or a lifting hook, one end of the lifting ring (310) or the lifting hook being fixedly connected to the first section (110).

9. The lifting tool according to claim 8, characterized in that: A threaded hole is provided at one end of the first section (110), and the lifting ring (310) or the lifting hook is provided with a screw rod, and the screw rod of the lifting ring (310) or the lifting hook is threadedly connected to the threaded hole of the first section (110).

10. The lifting tool according to any one of claims 1 to 9, characterized in that: The first rod comprises a hinge shaft (170), the first rod and the second rod are respectively provided with a hole, and the hinge shaft (170) passes through the first rod and the second rod.

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