Brake cylinder disassembling and assembling tool for locomotive unit brake

Abstract

According to the brake cylinder disassembling and assembling tool for the locomotive unit brake, the clamping grooves of the two longitudinal fixing rods and the universal adjusting base of the swing rod are matched for supporting, the fixing effect of the disassembling and assembling tool can be guaranteed in a three-point supporting and swing rod angle adjustable mode, and the disassembling and assembling tool can be suitable for various working conditions; the application range is widened, the screw rod can be driven to move axially by rotating the hand wheel manually, and the nut at the end of the screw rod can be driven to rotate through the electric tool, so that the piston rod can be pushed and the counter-acting force of the spring can be overcome through the manual operation or the electric tool operation; in addition, an anti-skid pad and a rubber pad are arranged on the bottom face of the universal adjusting base and the bottom face of the universal rotating disc of the swing rod respectively, sliding can be prevented, the supporting effect can be improved, and safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of brake cylinder disassembly and assembly equipment, in particular to a brake cylinder disassembly and assembly tool for a locomotive unit brake. Background Art

[0002] The brake cylinder is a key actuator for vehicle braking. When braking occurs, compressed air enters one side of the brake cylinder's rubber seal, pushing the piston and piston rod in the braking direction. This simultaneously activates the vehicle's basic brake system until the brake shoe contacts the wheel, completing the braking action. Conversely, when the vehicle eases off, the spring on the other side of the brake cylinder drives the piston and piston rod in the opposite direction until the air pressure and spring pressure balance. If the brake cylinder is used for a long time and frequently, it is prone to failure during use, requiring maintenance personnel to disassemble and replace the brake cylinder promptly.

[0003] At present, when repairing the brake cylinder of a diesel locomotive, the end cover needs to be removed. However, when the end cover is removed, the reset spring will push out the piston and the piston rod. Therefore, during disassembly, an operator is required to exert force on the back of the cylinder body to pre-press the brake cylinder spring. When the brake cylinder spring is pressed to a suitable working stroke, another operator inserts or pulls out the connecting rod, pin and pad between the brake cylinder piston and the brake lever from the side, and then completes the disassembly and installation of the brake cylinder piston. Therefore, at least two operators are required to cooperate to complete the on-site maintenance. Moreover, due to the high spring stiffness and elastic coefficient of the brake cylinder piston and the long spring stroke, the elastic force is large. During the operation, it takes a long time to manually press the spring to ensure accurate alignment. The existing operation method is labor-intensive and time-consuming. During the disassembly and installation operations, multiple people are required to work together, and there are uncontrollable personal injuries such as spring extrusion, which can easily cause temporary repair accidents.

[0004] The existing patent CN220762487U proposes a locomotive brake cylinder combination auxiliary installation tool, which is fixed to the brake cylinder housing through multiple hooks, and then the threaded rod is rotated by a handwheel. Finally, the axial movement of the threaded rod drives the piston top plate to compress the piston and the piston rod. This structure results in a limited fixing position of the hook and the brake cylinder housing, so the scope of application of the disassembly and assembly tool is also limited, and the handwheel must be turned manually to drive the piston rod to overcome the reaction force of the spring, which is more laborious to operate. Utility Model Content

[0005] The purpose of the utility model is to provide a brake cylinder disassembly and assembly tool for a locomotive unit brake, which improves the application range of the disassembly and assembly tool and is more flexible and labor-saving to use.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a brake cylinder disassembly and assembly tool for a locomotive unit brake, comprising a transverse fixing rod and two longitudinal fixing rods, the two longitudinal fixing rods being connected to the two ends of the transverse fixing rod respectively, a clamping groove being provided at one end of the longitudinal fixing rod away from the transverse fixing rod, the clamping grooves of the two longitudinal fixing rods being able to cooperate with the clamping of the brake cylinder box and limiting the axial movement of the longitudinal fixing rods relative to the brake cylinder box; a threaded rod is passed through the middle of the transverse fixing rod, the threaded rod and the two longitudinal fixing rods are parallel to each other, a universal turntable is installed at one end of the threaded rod close to the clamping groove, and the universal turntable is away from the transverse fixing rod A rubber pad is provided on one side, and a handwheel is provided on the end of the threaded rod away from the slot, and a nut is also fixed on the end of the threaded rod away from the slot. The nut and the threaded rod are coaxially arranged, and when the handwheel is rotated manually or the nut is rotated by an external device, the threaded rod can be moved axially relative to the transverse fixed rod, so as to push the piston rod of the brake cylinder through the universal turntable; the middle part of the transverse fixed rod is also rotatably connected to a swing rod, and a universal adjustment base is provided on the end of the swing rod away from the transverse fixed rod, and an anti-slip pad is provided on the side of the universal adjustment base away from the swing rod, so as to provide auxiliary support to the transverse fixed rod and the threaded rod through the universal adjustment base.

[0007] Preferably, the transverse fixing rod and the two longitudinal fixing rods are respectively a section of round steel pipe.

[0008] According to the above technical solution, the beneficial effects of the utility model are:

[0009] 1. The utility model can make the threaded rod move axially by turning the handwheel manually or by turning the nut through an external device, push the piston rod of the brake cylinder through the universal turntable, overcome the reaction force of the brake cylinder return spring, and pre-press the brake cylinder spring. When the brake cylinder spring is pressed to a suitable working stroke, it is only necessary to stop turning the handwheel or nut, and the threaded rod will automatically maintain its position. Then, the connecting rod, pin and spacer between the brake cylinder piston and the brake lever can be inserted or pulled out from the side, thereby completing the disassembly and installation of the brake cylinder piston. The entire operation process can be completed by one person alone, and the cooperation of two people is no longer required.

[0010] 2. The utility model is supported by the slots of two longitudinal fixing rods and the universal adjustment base of a swing rod. The three-point support and the adjustable angle of the swing rod can not only ensure the fixing effect of the disassembly and assembly tooling, but also make the disassembly and assembly tooling applicable to various working conditions, thereby improving the scope of application.

[0011] 3. The utility model can drive the threaded rod to move axially by rotating the handwheel manually, and can also drive the nut at the end of the threaded rod to rotate by an electric tool. Therefore, the utility model can push the piston rod and overcome the reaction force of the spring through two modes of operation: human power or electric tool, which is more flexible and labor-saving to use.

[0012] 4. The universal adjustment base of the swing arm and the bottom of the universal turntable are respectively provided with anti-slip pads and rubber pads, which can prevent sliding, improve the supporting effect and ensure safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the present utility model.

[0014] Markings in the figure: 1. Horizontal fixing rod, 2. Vertical fixing rod, 3. Swing rod, 4. Threaded rod, 5. Handwheel, 6. Nut, 7. Slot, 8. Universal turntable, 9. Rubber pad, 10. Universal adjustment base, 11. Anti-slip pad. DETAILED DESCRIPTION

[0015] With reference to the accompanying drawings, the specific implementation is as follows:

[0016] like Figure 1 As shown, a brake cylinder disassembly and assembly tool for a locomotive unit brake includes a transverse fixing rod 1 and two longitudinal fixing rods 2. The transverse fixing rod 1 and the two longitudinal fixing rods 2 are respectively a section of round steel pipe. The two longitudinal fixing rods 2 are respectively connected to the two ends of the transverse fixing rod 1. A clamping groove 7 is provided at one end of the longitudinal fixing rod 2 away from the transverse fixing rod 1. The clamping groove 7 of the two longitudinal fixing rods 2 can cooperate with the clamping of the brake cylinder case and limit the axial movement of the longitudinal fixing rods 2 relative to the brake cylinder case. The specific clamping position of the clamping groove 7 can be the edge or middle reinforcement plate of the brake cylinder case. The width, depth and shape of the clamping groove 7 are designed and manufactured according to its expected clamping position.

[0017] A threaded rod 4 is passed through the middle of the transverse fixed rod 1. The threaded rod 4 and the two longitudinal fixed rods 2 are parallel to each other. A universal turntable 8 is installed on the end of the threaded rod 4 close to the slot 7. A rubber pad 9 is provided on the side of the universal turntable 8 away from the transverse fixed rod 1. A handwheel 5 is set on the end of the threaded rod 4 away from the slot 7, and a nut 6 is also fixed on the end of the threaded rod 4 away from the slot 7. The nut 6 is coaxially arranged with the threaded rod 4. When the handwheel 5 is rotated manually or the nut 6 is rotated by an external device, the threaded rod 4 can be moved axially relative to the transverse fixed rod 1, and the piston rod of the brake cylinder can be pushed through the universal turntable 8 to overcome the reaction force of the brake cylinder return spring and pre-compress the brake cylinder spring.

[0018] When the brake cylinder spring is compressed to a suitable working stroke, the user only needs to stop rotating the handwheel 5 or the nut 6, and the threaded rod 4 will automatically maintain its position. Then, the connecting rod, the through pin and the spacer between the brake cylinder piston and the brake lever can be inserted or pulled out from the side, thereby completing the disassembly and installation of the brake cylinder piston. The entire operation can be completed by one person alone, and the cooperation of two people is no longer required. Since the threaded rod 4 can be driven axially by rotating the handwheel 5 manually, or the nut at the end of the threaded rod 4 can be driven to rotate by an electric tool, the present invention can achieve the pushing of the piston rod and overcome the reaction force of the spring by both manual and electric tool operations, making it more flexible and labor-saving to use.

[0019] The middle part of the horizontal fixed rod 1 is also rotatably connected with a swing rod 3. The end of the swing rod 3 away from the horizontal fixed rod 1 is provided with a universal adjustment base 10. The side of the universal adjustment base 10 away from the swing rod 3 is provided with an anti-slip pad 11. The universal adjustment base 10 can be used to provide auxiliary support for the horizontal fixed rod 1 and the threaded rod 4. The three-point support and adjustable angle of the swing rod 3 can not only ensure the fixing effect of the disassembly and assembly tooling, but also make the disassembly and assembly tooling applicable to various working conditions, thereby improving the scope of application.

Claims

1. A brake cylinder disassembly and assembly tool for a locomotive unit brake, characterized by: The invention comprises a transverse fixing rod (1) and two longitudinal fixing rods (2), the two longitudinal fixing rods (2) being connected to both ends of the transverse fixing rod (1), a clamping groove (7) being provided at one end of the longitudinal fixing rod (2) away from the transverse fixing rod (1), the clamping grooves (7) of the two longitudinal fixing rods (2) being capable of cooperating with the clamping brake cylinder housing and limiting the longitudinal fixing rods (2) from moving axially relative to the brake cylinder housing; a threaded rod (4) is passed through the middle of the transverse fixing rod (1), the threaded rod (4) and the two longitudinal fixing rods (2) are parallel to each other, a universal turntable (8) is installed at one end of the threaded rod (4) close to the clamping groove (7), a rubber pad (9) is provided on the side of the universal turntable (8) away from the transverse fixing rod (1), and a hand wheel ( 5), and a nut (6) is fixed to one end of the threaded rod (4) away from the slot (7), and the nut (6) is coaxially arranged with the threaded rod (4). When the hand wheel (5) is rotated manually or the nut (6) is rotated by an external device, the threaded rod (4) can be moved axially relative to the transverse fixed rod (1), so as to facilitate pushing the piston rod of the brake cylinder through the universal turntable (8); the middle part of the transverse fixed rod (1) is also rotatably connected to the swing rod (3), and the end of the swing rod (3) away from the transverse fixed rod (1) is provided with a universal adjustment base (10), and the side of the universal adjustment base (10) away from the swing rod (3) is provided with an anti-slip pad (11), so as to facilitate auxiliary support of the transverse fixed rod (1) and the threaded rod (4) through the universal adjustment base (10).

2. The brake cylinder disassembly and assembly tool for a locomotive unit brake according to claim 1, characterized in that: The horizontal fixing rod (1) and the two longitudinal fixing rods (2) are respectively a section of round steel pipe.

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