Unit brake cylinder

Abstract

The utility model relates to unit brake cylinder field especially a unit brake cylinder, in view of the inconvenient problem that unit brake cylinder output end surface dirt is cleaned in the prior art, present and propose the following scheme, it includes cylinder body and the piston rod of being located in the inside of cylinder body, the one end of piston rod extends to the outside of cylinder body, its characterized in that, the end of cylinder body is equipped with the cleaning mechanism for cleaning piston rod, the cleaning mechanism includes the cleaning ring and the mounting ring of being equipped in the outer periphery of piston rod, and the linkage mechanism of being installed in the end of cylinder body, the end of mounting ring and cylinder body rotates and is connected, the fixed post fixedly connects between cleaning ring and mounting ring, the inner ring of cleaning ring is equipped with brush, the outer ring of cleaning ring is equipped with the toothing ring of sleeve joint. The utility model not only can be convenient and timely to the dirt of brake cylinder piston cylinder surface carries out the cleaning, and still can clean the dirt remaining on the brush, thereby help to prolong the service life of brush.

Description

Technical Field

[0001] This utility model relates to the field of unit brake cylinders, and in particular to a unit brake cylinder. Background Technology

[0002] Unit brake cylinders are commonly used in railway vehicles. By pressurizing the cylinder, the piston rod extends outward, thus completing the braking action. Because vehicles generate a lot of dust and debris while driving outdoors, this dirt easily adheres to the surface of the extended piston rod during braking. When the piston rod retracts into the cylinder, it can carry this dirt inside, causing damage to the brake cylinder.

[0003] Currently, the method used to clean the dirt on the brake cylinder piston rod is to manually clean it periodically. This not only requires extra time and labor, but also cannot be done in a timely manner. The accumulated dust and dirt can also have an adverse effect on the service life of the brake cylinder. Therefore, this solution proposes a unit brake cylinder. Utility Model Content

[0004] The present invention proposes a unit brake cylinder that solves the problem of inconvenient cleaning of dirt on the output end surface of the existing unit brake cylinder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A unit brake cylinder includes a cylinder body and a piston rod disposed inside the cylinder body, one end of the piston rod extending to the outside of the cylinder body, characterized in that a cleaning mechanism for cleaning the piston rod is installed at the end of the cylinder body;

[0007] The cleaning mechanism includes a cleaning ring and a mounting ring sleeved on the outer periphery of the piston rod, and a linkage mechanism installed at the end of the cylinder body. The mounting ring is rotatably connected to the end of the cylinder body, and the cleaning ring and the mounting ring are fixedly connected by a fixing post. The inner ring of the cleaning ring is equipped with bristles, and the outer ring of the cleaning ring is sleeved with a toothed ring.

[0008] The linkage mechanism includes a linkage shaft rotatably mounted at the end of the cylinder and a rotating shaft rotatably connected to the outer periphery of the cylinder. One end of the rotating shaft is fixed with a transmission gear that meshes with a gear ring. The linkage shaft is tractively connected to the rotating shaft, and the other end of the linkage shaft is equipped with a linkage wheel that abuts against the outer periphery of the piston rod.

[0009] The above technical solution not only allows for convenient and timely cleaning of dirt on the surface of the brake cylinder piston, but also enables the mounting ring to rotate while the telescopic rod extends and retracts, thus ensuring that the bristles can rotate around the piston rod and further improve the cleaning effect.

[0010] As a further improvement to the above solution, the outer periphery of the linkage wheel is fitted with an anti-slip rubber ring, and the anti-slip rubber ring abuts against the outer periphery of the piston rod.

[0011] The above technical solution can increase the friction between the linkage wheel and the piston rod, ensuring that the piston rod can drive the linkage wheel to rotate stably during the movement of the piston rod.

[0012] As a further improvement to the above scheme, a driven bevel gear is sleeved on the outer circumference of the rotating shaft, and a driving bevel gear that meshes with the driven bevel gear is sleeved on one end of the linkage shaft.

[0013] As a further improvement to the above solution, the cleaning ring has a hollow structure, and the inner ring of the cleaning ring has multiple air jet holes. The outer periphery of the cylinder body is equipped with an air distribution mechanism for supplying air to the inner side of the cleaning ring.

[0014] The above technical solution allows airflow from the jet hole to blow away dirt remaining on the brush bristles, thus facilitating brush cleaning.

[0015] As a further improvement to the above solution, the valve train includes an air cylinder installed on the outer periphery of the cylinder body and a piston plate installed inside the air cylinder. One end of the rotating shaft is fixed with a screw rod coaxially arranged therewith. A threaded sleeve is sleeved on the outer periphery of the screw rod, and one end of the threaded sleeve extends into the air cylinder and is fixedly connected to the piston rod. One end of the air cylinder is equipped with an air supply pipe and an air intake pipe, and the other end of the air supply pipe is connected to the inner side of the cleaning ring. One-way valves are installed on both the air supply pipe and the air intake pipe.

[0016] The above technical solution allows outside air to be drawn into the air cylinder as the piston rod extends outward, and when the piston rod retracts, it drives the air distribution mechanism to press the air in the air cylinder into the mounting ring, thereby achieving the purpose of automatically supplying air into the mounting ring.

[0017] As a further improvement to the above solution, the end of the brush bristles away from the cleaning ring abuts against the outer periphery of the piston rod.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. Through the cooperation between the cleaning ring, brush bristles and linkage mechanism, the rotating shaft can be driven to rotate while the piston rod extends and retracts, thereby driving the gear ring 3 to rotate. This allows the cleaning ring to rotate while the piston rod extends and retracts, thus further wiping the dirt on the piston rod surface, reducing cleaning dead corners and making the cleaning more thorough.

[0020] 2. Through the cooperation between the air distribution mechanism and the linkage mechanism, outside air can be drawn into the air cylinder while the piston rod extends. Then, when the piston rod retracts, the air in the air cylinder is forced into the inner side of the cleaning ring and finally ejected from the jet hole. This can clean the dirt remaining on the bristles and extend the service life of the bristles. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the gas distribution mechanism of this utility model;

[0023] Figure 3 This is a schematic diagram of the linkage mechanism of this utility model;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a schematic diagram of the cleaning ring structure;

[0026] Figure 6 This is a diagram of the jet nozzle.

[0027] Explanation of key symbols:

[0028] 1. Cylinder block; 2. Cleaning ring; 3. Gear ring; 4. Mounting ring; 5. Air cylinder; 6. Air supply pipe; 7. Transmission gear; 8. Linkage wheel; 9. Intake pipe; 10. Shaft; 11. Screw sleeve; 12. Linkage shaft; 13. Brush bristles; 14. Jet nozzle; 15. Piston rod. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] Example 1:

[0031] Please combine Figure 1 - Figure 6 A unit brake cylinder according to this embodiment includes a cylinder body 1 and a piston rod 15 disposed inside the cylinder body 1. One end of the piston rod 15 extends to the outside of the cylinder body 1. A cleaning mechanism for cleaning the piston rod 15 is installed at the end of the cylinder body 1. During the process of the piston rod 15 extending and then retracting, the cleaning mechanism cleans away the dirt adsorbed on the outer periphery of the piston rod 15, so as to avoid bringing the dirt into the cylinder body 1.

[0032] The cleaning mechanism includes a cleaning ring 2 and a mounting ring 4 sleeved on the outer periphery of the piston rod 15 and a linkage mechanism installed at the end of the cylinder body 1. The mounting ring 4 is rotatably connected to the end of the cylinder body 1. The cleaning ring 2 and the mounting ring 4 are fixedly connected by a fixing post 16. The inner ring of the cleaning ring 2 is equipped with bristles 13. The end of the bristles 13 away from the cleaning ring 2 abuts against the outer periphery of the piston rod 15. During the movement of the piston rod 15, the bristles 13 brush away the dust and other dirt on the outer periphery of the piston rod 15, thereby achieving the purpose of cleaning the piston rod 15.

[0033] The outer ring of the cleaning ring 2 is fitted with a toothed ring 3. The linkage mechanism includes a linkage shaft 12 rotatably mounted at the end of the cylinder body 1 and a rotating shaft 10 rotatably connected to the outer circumference of the cylinder body 1. One end of the rotating shaft 10 is fixed with a transmission gear 7 that meshes with the toothed ring 3. A driven bevel gear is fitted around the outer circumference of the rotating shaft 10. One end of the linkage shaft 12 is fitted with a driving bevel gear that meshes with the driven bevel gear. The other end of the linkage shaft 12 is fitted with a linkage wheel 8 that abuts against the outer circumference of the piston rod 15. An anti-slip rubber ring is fitted around the outer circumference of the linkage wheel 8, and the anti-slip rubber ring abuts against the outer circumference of the piston rod 15. Next, during the movement of the piston rod 15, the friction between it and the linkage wheel 8 will drive the linkage wheel 8 to rotate. After the linkage wheel 8 rotates, it can drive the linkage shaft 12 to rotate. After the linkage shaft 12 rotates, it will drive the rotating shaft 10 to rotate. After the rotating shaft 10 rotates, it will drive the gear ring 3 to rotate through the transmission gear 7. Finally, the piston rod 15 extends and retracts while driving the mounting ring 4 to rotate. This allows the brush bristles 13 to rotate and clean the dirt on the piston rod 15 while it is extending and retracting, thereby improving the cleaning effect.

[0034] Example 2:

[0035] Combination Figure 1 - Figure 3 and Figure 5 - Figure 6 Based on Example 1, this embodiment further improves upon the following: the cleaning ring 2 is a hollow structure, and the inner ring of the cleaning ring 2 has multiple air jet holes 14. An air distribution mechanism for supplying air to the inner side of the cleaning ring 2 is installed on the outer periphery of the cylinder body 1. The air distribution mechanism supplies air to the inside of the cleaning ring 2, and finally the air is ejected from the air jet holes 14, thereby blowing away the dirt remaining on the outer surface of the bristles 13, achieving the function of cleaning the bristles 13, and thus extending the service life of the bristles 13.

[0036] The valve train includes an air cylinder 5 mounted on the outer periphery of the cylinder block 1 and a piston plate mounted inside the air cylinder 5. A screw rod coaxially mounted on one end of the rotating shaft 10 is fixed thereto. A threaded sleeve 11 is fitted around the outer periphery of the screw rod, with one end of the threaded sleeve 11 extending into the air cylinder 5 and fixedly connected to the piston rod. An air supply pipe 6 and an air intake pipe 9 are installed on one end of the air cylinder 5, with the other end of the air supply pipe 6 connected to the inner side of the cleaning ring 2. One-way valves are installed on both the air supply pipe 6 and the air intake pipe 9. As the piston rod 15 extends and retracts, it drives the linkage shaft 12 to rotate, which in turn drives the rotating shaft 10 to rotate. The rotation of the rotating shaft 10 then drives the screw rod to rotate. Since the screw rod cannot move, and the threaded sleeve 11 is also fixed to the piston plate... Since the piston rod 15 cannot rotate, it drives the screw sleeve 11 to move along the length of the piston rod after the piston rod rotates. During the outward extension of the piston rod 15, it drives the piston rod to rotate in reverse, thereby driving the screw sleeve 11 to move to the outside of the air cylinder 5, and then drawing outside air into the air cylinder 5 through the air inlet pipe 9. When the piston rod 15 retracts, it drives the piston rod to rotate forward, thereby driving the screw sleeve 11 to move to the inside of the air cylinder 5, and then pressurizing the air in the air cylinder 5 into the mounting ring 4 through the air supply pipe 6. Finally, the air in the mounting ring 4 is ejected from the jet hole 14, thereby cleaning the bristles 13. This achieves the effect of automatically cleaning the bristles 13 while the piston rod 15 retracts.

[0037] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A unit brake cylinder, comprising a cylinder body and a piston rod disposed inside the cylinder body, one end of the piston rod extending to the outside of the cylinder body, characterized in that, The cylinder body is equipped with a cleaning mechanism for cleaning the piston rod at its end; The cleaning mechanism includes a cleaning ring and a mounting ring sleeved on the outer periphery of the piston rod, and a linkage mechanism installed at the end of the cylinder body. The mounting ring is rotatably connected to the end of the cylinder body, and the cleaning ring and the mounting ring are fixedly connected by a fixing post. The inner ring of the cleaning ring is equipped with bristles, and the outer ring of the cleaning ring is sleeved with a toothed ring. The linkage mechanism includes a linkage shaft rotatably mounted at the end of the cylinder and a rotating shaft rotatably connected to the outer periphery of the cylinder. One end of the rotating shaft is fixed with a transmission gear that meshes with a gear ring. The linkage shaft is tractively connected to the rotating shaft, and the other end of the linkage shaft is equipped with a linkage wheel that abuts against the outer periphery of the piston rod.

2. A unit brake cylinder according to claim 1, characterized in that, The outer circumference of the linkage wheel is fitted with an anti-slip rubber ring, and the anti-slip rubber ring abuts against the outer circumference of the piston rod.

3. A unit brake cylinder according to claim 1, characterized in that, A driven bevel gear is sleeved on the outer circumference of the rotating shaft, and a driving bevel gear that meshes with the driven bevel gear is sleeved on one end of the linkage shaft.

4. A unit brake cylinder according to claim 1, characterized in that, The cleaning ring has a hollow structure, and the inner ring of the cleaning ring has multiple air jet holes. The outer periphery of the cylinder body is equipped with an air distribution mechanism for supplying air to the inner side of the cleaning ring.

5. A unit brake cylinder according to claim 4, characterized in that, The valve train includes an air cylinder installed on the outer periphery of the cylinder body and a piston plate installed inside the air cylinder. One end of the rotating shaft is fixed with a screw rod coaxially arranged therewith. A threaded sleeve is sleeved on the outer periphery of the screw rod, and one end of the threaded sleeve extends into the air cylinder and is fixedly connected to the piston rod. One end of the air cylinder is equipped with an air supply pipe and an air intake pipe, and the other end of the air supply pipe is connected to the inner side of the cleaning ring. One-way valves are installed on both the air supply pipe and the air intake pipe.

6. A unit brake cylinder according to claim 1, characterized in that, The end of the brush bristles furthest from the cleaning ring abuts against the outer periphery of the piston rod.

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