Lower traction dismounting tool

Abstract

The utility model relates to a lower traction disassembly tool. The tool comprises a hydraulic cart; one end of the pulling sleeve is installed on the hydraulic cart, the other end of the pulling sleeve is provided with a notch, the inner wall of the notch is provided with a threaded surface, the threaded surface is used for being in threaded connection with the inner wall of the lower end of the inner metal sheet of the rubber sleeve, and the outer wall of the notch is used for being arranged on the periphery of the inner metal sheet of the rubber sleeve in a sleeving mode; the driving part is mounted on the hydraulic cart and located in the pulling sleeve so as to extend out of the pulling sleeve, so that the driving end of the driving part pushes the center pin upwards, then the height of the hydraulic cart is reduced, the pulling sleeve drives the lower traction device to move downwards, and the rubber sleeve can drive the lower traction device to be separated from the upper traction base; in the detaching and separating process of the lower traction device and the upper traction base, the lower end of the inner metal sheet can be subjected to downward pulling force given by the driving piece, and rapid separation of the center pin and the lower traction device is guaranteed.

Description

Technical Field

[0001] This disclosure relates to the field of subway vehicles and rail vehicles, and specifically to a lower traction disassembly tool. Background Technology

[0002] Both the upper traction seat and the lower traction device of the subway car are equipped with pin holes. Inside each pin hole is a central pin and a rubber sleeve fitted around the central pin. The rubber sleeve consists of two annular metal rings filled with rubber, and the central rubber sleeve has an interference fit with both the lower traction device and the central pin. In related technologies, the lower traction disassembly fixture disassembles the device by indirect force applied to the rubber sleeve. Due to the aging of the rubber sleeve, the rubber filling in the central rubber sleeve has repeatedly torn during disassembly, resulting in excessive deformation. Combined with space constraints, this has led to the inability to separate the components. Utility Model Content

[0003] In order to overcome the problem that the existing lower traction disassembly tooling disassembles by bearing the force between the rubber sleeves, and that due to the aging of the rubber sleeves, the central rubber sleeve filling rubber tears and causes excessive deformation during the disassembly process, and coupled with space constraints, makes separation impossible, this utility model provides a lower traction disassembly tooling.

[0004] To achieve the above objectives, this disclosure provides a lower traction disassembly fixture, comprising:

[0005] Hydraulic trolley;

[0006] A pull sleeve, one end of which is mounted on the hydraulic trolley, and the other end having a notch. The inner wall of the notch has a threaded surface for screwing into the inner wall of the lower end of the inner metal sheet of the rubber sleeve. The outer wall of the notch is used to fit around the outer periphery of the inner metal sheet of the rubber sleeve.

[0007] A drive unit, mounted on the hydraulic trolley and located within the pull sleeve, is able to extend out of the pull sleeve to push the center pin upward from the drive end of the drive unit.

[0008] Optionally, the driving component is a hydraulic cylinder or a pneumatic cylinder.

[0009] Optionally, the inner metal sheet extends downward with two protrusions to form the lower end of the inner metal sheet. The two protrusions are arranged opposite to each other. The cross-section of the protrusion is arc-shaped. The inner wall of the protrusion is provided with process threads. There are two notches, which are respectively arranged in a one-to-one correspondence with the protrusions. The inner wall of the notch is screwed to the process threads of the protrusion.

[0010] Optionally, the pulling sleeve includes a pulling platform and a support column. The pulling platform is connected to the support column and is also connected to the hydraulic trolley through the support column. There are multiple support columns, which are installed at intervals on the pulling platform. The notch is provided on the pulling platform.

[0011] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0012] The rubber sleeve includes an inner metal sheet and an outer metal sheet, as well as rubber sandwiched between the inner and outer metal sheets. A center pin contacts the rubber sleeve through the inner metal sheet within a pin hole. The lower end of the inner metal sheet does not contact the center pin, and the inner wall of the lower end of the inner metal sheet has a process thread surface. A hydraulic trolley is pushed to a position below the lower end of the inner metal sheet of the rubber sleeve. The trolley is then raised, positioning the lower end of the inner metal sheet within the notch of the pulling sleeve. The pulling sleeve is rotated, causing the inner wall of the notch to screw into the inner wall of the lower end of the inner metal sheet. The outer wall of the notch contacts the outer circumference of the lower end of the inner metal sheet of the rubber ring, preventing the process thread surface of the lower end of the inner metal sheet from deforming outwards under tension. The drive mechanism is activated to push the center pin upwards. Because the center pin is connected to the upper traction seat, which is fixedly connected to other parts of the vehicle, the center pin will not move upwards during the drive process. Then, the hydraulic trolley lowers the height, causing the pulling sleeve to move the lower traction device downwards. This means the lower end of the inner metal plate is subjected to a downward pulling force from the drive mechanism, reducing the stress on the rubber between the inner and outer metal plates and preventing tearing due to excessive force. This ensures the rapid separation of the center pin and the rubber sleeve, thereby guaranteeing the separation of the upper traction seat and the lower traction device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram illustrating the use of a lower traction disassembly tool according to an exemplary embodiment of the present disclosure.

[0014] Explanation of reference numerals: 10, upper traction seat; 20, lower traction device; 30, rubber sleeve; 31, inner metal plate; 311, protrusion; 40, center pin; 100, hydraulic trolley; 200, pulling sleeve; 210, pulling platform; 211, notch; 220, support column; 300, driving component; 400, hydraulic station. Detailed Implementation

[0015] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0016] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "front," "rear," "left," and "right" are used for ease of description based on the drawing orientations of the corresponding figures, while "inner" and "outer" are defined based on the contours of the corresponding components themselves. Terms such as "first" and "second" used in this disclosure are used to distinguish one element from another and do not have sequential or importance implications. Furthermore, when the following description refers to the figures, unless otherwise indicated, the same numbers in different figures represent the same or similar elements.

[0017] Please see Figure 1 This disclosure provides a lower traction disassembly fixture for disassembling and separating an upper traction seat and a lower traction seat in a subway or light rail system. The upper traction seat 10 is part of the frame structure, and the lower traction device 20 is part of the bogie structure. Since both the upper traction seat 10 and the lower traction seat are prior art, they will not be described in detail here. The lower traction disassembly fixture includes a hydraulic trolley 100, a pulling sleeve 200, and a driving component 300. The hydraulic trolley 100 is prior art and will not be described in detail here. One end of the pulling sleeve 200 is mounted on the hydraulic trolley 100, and the other end has a notch 211. The inner wall of the notch 211 has a threaded surface, which is used to screw into the inner wall of the lower end of the inner metal sheet 31 of the rubber sleeve 30. The outer wall of the notch 211 is used to fit around the outer periphery of the inner metal sheet 31 of the rubber sleeve 30. The drive unit 300 is mounted on the hydraulic trolley 100 and is located inside the pull sleeve 200 so that it can extend out of the pull sleeve 200 to push the center pin 40 upward from the drive end of the drive unit 300.

[0018] It is understood that the rubber sleeve 30 includes an inner metal sheet 31, an outer metal sheet, and rubber sandwiched between the inner metal sheet 31 and the outer metal sheet. The center pin 40 contacts the rubber sleeve 30 through the inner metal sheet 31 in the pin hole. The lower end of the inner metal sheet 31 does not contact the center pin 40, and the inner wall of the lower end of the inner metal sheet 31 is provided with a process thread surface. The hydraulic trolley 100 is pushed to the lower end of the inner metal sheet 31 of the rubber sleeve 30, and the hydraulic trolley is raised so that the lower end of the inner metal sheet 31 is placed in the notch 211 of the pulling sleeve 200. The pulling sleeve 200 is rotated so that the inner wall of the notch 211 is screwed to the inner wall of the lower end of the inner metal sheet 31, and the outer wall of the notch 211 contacts the outer periphery of the lower end of the inner metal sheet 31 of the rubber ring, so as to prevent the process thread surface of the lower end of the inner metal sheet 31 from deforming outward under tension, thus protecting the process thread surface. The drive mechanism is activated to push the center pin upwards. Because the center pin is connected to the upper traction seat, which is fixedly connected to other parts of the vehicle, the center pin will not move upwards during the drive process. Then, the hydraulic trolley lowers the height, causing the pulling sleeve to move the lower traction device downwards. This means the lower end of the inner metal sheet is subjected to a downward pulling force from the drive mechanism, reducing the stress on the rubber between the inner and outer metal sheets. This prevents the rubber from tearing due to excessive force, ensuring the rapid separation of the center pin 40 and the rubber sleeve 30, thereby ensuring the separation of the upper traction seat 10 and the lower traction device 20. This ensures the rapid separation of the center pin and the lower traction device.

[0019] In one implementation, please refer to Figure 1 The drive component 300 is a hydraulic cylinder or a pneumatic cylinder. When the drive component 300 is a hydraulic cylinder, the tooling also includes a hydraulic station 400, which is connected to the hydraulic cylinder to provide kinetic energy.

[0020] In one implementation, please refer to Figure 1 The inner metal sheet 31 extends downwards with two protrusions 311 to form the lower end of the inner metal sheet 31. The two protrusions 311 are arranged opposite each other, and the cross-section of the protrusions 311 is arc-shaped. The inner wall of the protrusions 311 is provided with process threads. There are two notches 211, which are respectively arranged one-to-one with the protrusions 311. The inner wall of the notch 211 is screwed to the process threads of the protrusion 311. By setting two protrusions 311, the stability of the rubber ring when pulled down can be increased. Of course, in other embodiments, the inner metal sheet 31 extends downwards with three or four protrusions 311.

[0021] In one implementation, please refer to Figure 1The pull sleeve 200 includes a pull platform 210 and a support column 220. The pull platform 210 is connected to the support column 220 and is also connected to the hydraulic trolley 100 through the support column 220. There are multiple support columns 220, which are installed at intervals on the pull platform 210. A notch 211 is provided on the pull platform 210. Setting multiple support columns 220 can increase the stability and reliability of the pull platform 210 driving the rubber sleeve 30 to work.

[0022] This invention has been described through embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of this invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, this invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this invention.

Claims

1. A lower pulling dismounting tool characterized by, include: Hydraulic trolley (100); A pull sleeve (200) is mounted on the hydraulic trolley (100) at one end and has a notch (211) at the other end. The inner wall of the notch (211) has a threaded surface, which is used to screw into the inner wall of the lower end of the inner metal piece (31) of the rubber sleeve (30). The outer wall of the notch (211) is used to fit around the outer periphery of the inner metal piece (31) of the rubber sleeve (30). as well as A drive element (300) is mounted on the hydraulic trolley (100) and located within the pull sleeve (200) so as to extend out of the pull sleeve (200) and push the center pin (40) upward from the drive end of the drive element (300).

2. The lower pulling dismounting tool according to claim 1, characterized in that, The drive component (300) is a hydraulic cylinder or a pneumatic cylinder.

3. The lower pulling dismounting tool according to claim 1, characterized in that, The inner metal sheet (31) extends downward with two protrusions (311) to form the lower end of the inner metal sheet (31). The two protrusions (311) are arranged opposite to each other. The cross-section of the protrusion (311) is arc-shaped. The inner wall of the protrusion (311) is provided with process threads. There are two notches (211), which are respectively arranged in a one-to-one correspondence with the protrusions (311). The inner wall of the notch (211) is screwed to the process threads of the protrusion (311).

4. The lower pulling dismounting tool according to claim 3, characterized in that, The pull sleeve (200) includes a pull platform (210) and a support column (220). The pull platform (210) is connected to the support column (220) and is connected to the hydraulic trolley (100) through the support column (220). There are multiple support columns (220) and they are installed at intervals on the pull platform (210). The notch (211) is provided on the pull platform (210).

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