A device for disassembling brake shoe of locomotive tread

Abstract

The present invention provides a device for disassembling the brake shoe of a locomotive tread, comprising a hydraulic pump, an oil pipe, a hydraulic cylinder, a bellows, a pull rod, a support frame, a pull plate and an axle pin. The interior of the hydraulic pump is connected to the interior of the hydraulic cylinder through an oil pipe. The lower end of the hydraulic cylinder is fixedly connected to the upper end of the support frame. The bellows and a sealing ring are embedded in the hydraulic cylinder. The sealing ring and the bellows are arranged parallel to each other. The lower end of the bellows is fixedly connected to the upper end of the pull rod. The lower end of the pull rod passes through the sealing ring, the lower end of the hydraulic cylinder and the lower end of the support frame in sequence, and then the pull plate is installed. The pull plate is sleeved to the upper end of the shoe through the axle pin. The shoe support is installed with the shoe support. The lower end of the support frame is contact-connected to the upper end of the shoe support. The shoe support is made of spring steel. The device for disassembling the brake shoe of a locomotive tread according to the present invention has a simple and compact structure and a low manufacturing cost, which makes maintenance convenient and fast, shortens the preparation time of the locomotive, reduces the effect of transportation time, and greatly reduces the operating cost.

Description

Technical Field

[0001] The invention belongs to the technical field of locomotive maintenance and repair, and in particular relates to a device for disassembling a brake shoe of a locomotive tread. Background Art

[0002] There are two main types of braking methods for locomotives currently in operation on railways: tread brake and disc brake. For locomotives with tread brake, after each operation, the wear of the brake shoe is checked in the return section. If the wear limit is reached, the brake shoe needs to be replaced. When replacing the brake shoe, the brake shoe tag that fixes the brake shoe needs to be removed first. The brake shoe tag is made of spring steel and relies on elasticity to fix the brake shoe on the brake shoe support. During the application process, the brake shoe tag is often deformed due to the continuous force on the brake shoe, making it difficult to remove.

[0003] The existing disassembly methods are to pry with a screwdriver and smash with a hammer, which is time-consuming and laborious. At the same time, the safety is not high, and the operator is often easily injured. In case of large deformation, only destructive cutting with a gas welding torch can be used. It often takes two workers a day to dismantle a locomotive, which prolongs the transportation time. Therefore, it is urgent to design a convenient disassembly tool to solve the above problems. Summary of the invention

[0004] In view of this, the present invention aims to propose a device for disassembling the brake shoe of a locomotive tread, so as to achieve safer and faster replacement of the brake shoe of the locomotive, simplify and facilitate maintenance, shorten the locomotive preparation time, and reduce the transportation time.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A device for removing brake shoe signs of a locomotive tread, comprising a hydraulic pump, an oil pipe, a hydraulic cylinder, a bellows, a pull rod, a support frame, a pull plate and an axle pin, the interior of the hydraulic pump is connected to the interior of the hydraulic cylinder through an oil pipe, the lower end of the hydraulic cylinder is fixedly connected to the upper end of the support frame, the bellows and a sealing ring are embedded in the hydraulic cylinder, the sealing ring and the bellows are arranged parallel to each other, the lower end of the bellows is fixedly connected to the upper end of the pull rod, the lower end of the pull rod passes through the sealing ring, the lower end of the hydraulic cylinder and the lower end of the support frame in sequence, and then the pull plate is installed, the pull plate is sleeved to the upper end of the shoe sign through an axle pin, the shoe support is installed with the brake shoe through the shoe sign, the lower end of the support frame is contact-connected to the upper end of the shoe support, and the shoe sign is made of spring steel.

[0007] Furthermore, the cross section of the support frame is a U-shaped structure, a first through hole is provided at the bottom of the support frame, the outer periphery of the pull rod is sleeved into the first through hole, and the pull plate is located in the U-shaped structure of the support frame.

[0008] Furthermore, the hydraulic pump is a manual oil pressure pump capable of delivering a pressure of not less than 1 MPa.

[0009] Furthermore, the hydraulic cylinder includes an upper flange, a cylinder body and a lower flange, the upper end of the lower flange is installed with the upper flange through the cylinder body, the lower end of the lower flange is fixedly connected to the upper end of the support frame, the cylinder body is a hollow cylindrical structure, and the side wall of the cylinder body is provided with an oil hole, the oil hole is located between the bellows and the sealing ring, and one end of the oil pipe is sleeved into the oil hole.

[0010] Furthermore, the height of the cylinder body is not less than 35 mm, and the inner diameter of the cylinder body is not less than 32 mm.

[0011] Furthermore, the cross section of the pull plate is a U-shaped structure, and the two side walls of the pull plate are respectively provided with second through holes, the outer periphery of the axle pin is respectively sleeved to the upper end of the tile sign and the second through holes, and the upper end of the tile sign is located inside the pull plate.

[0012] Furthermore, the shaft pin is a steel shaft with an outer diameter not greater than 9.5 mm.

[0013] Compared with the prior art, the device for disassembling the brake shoe of a locomotive tread according to the present invention has the following advantages:

[0014] (1) The device for dismantling the brake shoe of a locomotive tread described in the present invention has a simple and compact structure, a low manufacturing cost, and is practical for flexibly dismantling brake shoe on railways, making maintenance convenient and quick, shortening locomotive preparation time, reducing transportation time, and greatly reducing operating costs.

[0015] (2) The device for dismantling the brake shoe of a locomotive tread described in the present invention ensures the safety and speed of dismantling the brake shoe when the brake shoe of a railway locomotive is updated by designing a new device for dismantling the brake shoe of a locomotive tread. By using a pull plate and a movable pin shaft, it can use hydraulic power as the power, and the hydraulic piston mechanism can transmit the dismantling force, thereby realizing mechanized operation and reducing labor intensity.

[0016] (3) The present invention discloses a device for dismantling a brake shoe pick for a locomotive tread. With this device, the shoe pick is dismantled by using the original brake shoe pick hole through a movable pin shaft, without damaging the original structure, and the brake shoe pick can continue to be used. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a front view of a device for removing a brake shoe of a locomotive tread according to an embodiment of the present invention;

[0019] Figure 2 It is a side view of a device for removing a brake shoe of a locomotive tread according to an embodiment of the present invention;

[0020] Figure 3 It is a rear view of the assembly of the hydraulic cylinder, the pull rod, the support frame and the pull plate according to the embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1-Hydraulic pump; 2-Oil pipe; 3-Hydraulic cylinder; 31-Upper flange; 32-Cylinder body; 33-Lower flange; 4-Bell; 5-Pull rod; 6-Support frame; 7-Pull plate; 8-Axle pin; 9-Wheel support; 10-Wheel sign; 11-Brake shoe. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0027] A device for removing a brake shoe of a locomotive tread, comprising a hydraulic pump 1, an oil pipe 2, a hydraulic cylinder 3, a bellows 4, a pull rod 5, a support frame 6, a pull plate 7 and an axle pin 8, wherein the interior of the hydraulic pump 1 is connected to the interior of the hydraulic cylinder 3 through the oil pipe 2, the lower end of the hydraulic cylinder 3 is fixedly connected to the upper end of the support frame 6, the bellows 4 and a sealing ring are embedded in the interior of the hydraulic cylinder 3, the sealing ring and the bellows 4 are arranged parallel to each other, the lower end of the bellows 4 is fixedly connected to the upper end of the pull rod 5, the lower end of the pull rod 5 passes through the sealing ring, the hydraulic cylinder 3 and the upper end of the pull rod 5 in sequence, and the lower end of the pull rod 5 passes through the sealing ring, the hydraulic cylinder 3 and the upper end of the pull rod 5 in sequence. A pull plate 7 is installed behind the lower end of 3 and the lower end of the support frame 6. The pull plate 7 is sleeved to the upper end of the shoe sign 10 through the axle pin 8. The shoe support 9 installs the brake shoe 11 through the shoe sign 10. The shoe sign 10 is made of spring steel. The lower end of the support frame 6 is in contact with the upper end of the shoe support 9, which serves as a force fulcrum to transmit the force of pulling the shoe sign 10. Through the unique design, the work efficiency is greatly improved, the labor intensity of the workers is reduced, the maintenance time is ensured, and the guarantee for improving the railway operation capacity and shortening the transportation time is provided.

[0028] The cross-section of the support frame 6 is a U-shaped structure. A first through hole is provided at the bottom of the support frame 6. The outer periphery of the pull rod 5 is sleeved into the first through hole, and the pull plate 7 is located in the U-shaped structure of the support frame 6. The lower end of the support frame 6 is in contact with and connected to the upper end of the tile support 9, serving as a force fulcrum to transmit the pulling force of the pull-out tile sign 10.

[0029] The hydraulic pump 1 is a manual oil pressure pump capable of delivering a pressure of not less than 1 MPa, so as to ensure the oil pressure input into the hydraulic cylinder 3 and ensure sufficient pulling force.

[0030] The hydraulic cylinder 3 includes an upper flange 31, a cylinder body 32 and a lower flange 33. The upper end of the lower flange 33 is installed with the upper flange 31 through the cylinder body 32, and the lower end of the lower flange 33 is fixedly connected to the upper end of the support frame 6. The cylinder body 32 is a hollow cylindrical structure. The side wall of the cylinder body 32 is provided with an oil hole, and the oil hole is located between the bellows 4 and the sealing ring. One end of the oil pipe 2 is sleeved into the oil hole. The height of the cylinder body 32 is not less than 35 mm, and the movement stroke of the pull rod 5 is not less than 30 mm, which meets the disassembly stroke required for the current market for the tile sign. The inner diameter of the cylinder body 32 is not less than 32 mm. The maximum oil filling pressure of the cylinder body 32 can reach 100 kg, which meets the force for pulling out the tile sign 10. According to experiments, 50 kg of force is generally required to disassemble the tile sign, and only 100 kg of force is required to effectively remove the tile sign under extreme deformation conditions.

[0031] The cross section of the pull plate 7 is a U-shaped structure, and second through holes are respectively provided on both side walls of the pull plate 7. The outer periphery of the axle pin 8 is respectively sleeved on the upper end of the tile sign 10 and the second through hole, and the upper end of the tile sign 10 is located in the pull plate 7. The pull plate 7 is designed according to the gap between the tile sign 10 and the tile support 9. The pull plate 7 is pushed deeper through the gap, and then installed into the tile sign hole and the second through hole through the pin holes of the axle pin 8 and the tile support 9, the tile support 9 is locked, and the tile sign 10 is pulled out. When the tile sign 10 is deformed, it can also be forcibly pulled out by hydraulic pressure, without the need for destructive disassembly, and reducing manpower and material resources.

[0032] The axle pin 8 is a steel shaft with an outer diameter not greater than 9.5 mm, which ensures the structural strength of the axle pin 8 while being able to pass smoothly through the shoe hole of the shoe 10 onto the pull plate 7 .

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for disassembling the brake shoe of a locomotive tread, Features: The hydraulic pump (1) comprises a hydraulic pump (1), an oil pipe (2), a hydraulic cylinder (3), a bellows (4), a pull rod (5), a support frame (6), a pull plate (7) and an axle pin (8); the interior of the hydraulic pump (1) is connected to the interior of the hydraulic cylinder (3) through the oil pipe (2); the lower end of the hydraulic cylinder (3) is fixedly connected to the upper end of the support frame (6); the bellows (4) and a sealing ring are embedded in the interior of the hydraulic cylinder (3); the sealing ring and the bellows (4) are arranged parallel to each other; the lower end of the bellows (4) is fixedly connected to the upper end of the pull rod (5); the lower end of the pull rod (5) passes through the sealing ring, the hydraulic cylinder (3) and the upper end of the pull rod (5) in sequence; ) and the lower end of the support frame (6), a pull plate (7) is installed behind the pull plate (7), the pull plate (7) is sleeved to the upper end of the shoe sign (10) through the shaft pin (8), the shoe support (9) is installed with the brake shoe (11) through the shoe sign (10), the lower end of the support frame (6) is in contact with and connected to the upper end of the shoe support (9), and the shoe sign (10) is made of spring steel; the cross section of the pull plate (7) is a U-shaped structure, and the two side walls of the pull plate (7) are respectively provided with second through holes, the outer periphery of the shaft pin (8) is respectively sleeved to the upper end of the shoe sign (10) and the second through hole, and the upper end of the shoe sign (10) is located inside the pull plate (7); The hydraulic cylinder (3) comprises an upper flange (31), a cylinder body (32) and a lower flange (33); the upper end of the lower flange (33) is mounted on the upper flange (31) through the cylinder body (32); the lower end of the lower flange (33) is fixedly connected to the upper end of the support frame (6); the cylinder body (32) is a hollow cylindrical structure; an oil delivery hole is provided on the side wall of the cylinder body (32); the oil delivery hole is located between the bellows (4) and the sealing ring; one end of the oil pipe (2) is sleeved into the oil delivery hole.

2. A device for disassembling a brake shoe of a locomotive tread according to claim 1, Features: The cross section of the support frame (6) is a U-shaped structure. A first through hole is provided at the bottom of the support frame (6). The outer periphery of the pull rod (5) is sleeved into the first through hole, and the pull plate (7) is located in the U-shaped structure of the support frame (6).

3. A device for disassembling a brake shoe of a locomotive tread according to claim 1, Features: The hydraulic pump (1) is a manual oil pressure pump capable of delivering a pressure of not less than 1 MPa.

4. A device for removing brake shoe from a locomotive tread according to claim 3, Features: The height of the cylinder body (32) is not less than 35 mm, and the inner diameter of the cylinder body (32) is not less than 32 mm.

5. The device for disassembling the brake shoe of a locomotive tread according to claim 1, Features: The shaft pin (8) is a steel shaft with an outer diameter not greater than 9.5 mm.

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