The invention belongs to the technical field of brake cylinder for vehicle, in particular to a brake cylinder dust cover and a waterproof brake cylinder using such dust cover.
A brake cylinder for a railway vehicle is generally mounted at the bottom of the vehicle, and the body of the vehicle (e.g. gondola car and box car) will prevent rain water from entering the cylinder. However, the bodies of some types of vehicles (e.g. flat car, tank car and cement truck) do not shelter the whole brake cylinders, so that rain water is easy to fall down to and enter the brake cylinder.
As shown in
To address the problems, the purpose of the invention is to provide a brake cylinder dust cover that can effectively prevent rain water from entering the brake cylinder so as to increase the service life of the brake cylinder and ensure safe driving, and to provide a waterproof brake cylinder using such dust cover.
The technical solution of the invention is realized by a brake cylinder dust cover, wherein the brake cylinder dust cover is fixedly connected to a front cover of the brake cylinder, characterized in that an outwards extending skirt is arranged at the edge of the brake cylinder dust cover in the axial direction thereof.
The brake cylinder dust cover according to the invention, wherein the skirt takes the shape of a bell mouth as a whole.
The brake cylinder dust cover according to the invention, wherein the skirt and the brake cylinder dust cover are formed into an integrated structure
A waterproof brake cylinder using the brake cylinder dust cover comprises a brake cylinder body and a front cover. A waterproof dust cover assembly is arranged on the front cover. The waterproof dust cover assembly comprises a dust cover fixedly connected to the front cover of brake cylinder, and a filter felt support and a filter felt pad which are arranged in the brake cylinder dust cover. The filter felt support is connected with the brake cylinder dust cover, and the filter felt pad is fixed on the filter felt support. An outwards extending skirt is arranged at the edge of the brake cylinder dust cover in the axial direction thereof.
The waterproof brake cylinder according to the invention, wherein an outwards extending boss is arranged at a vent of the brake cylinder dust cover in the axial direction thereof.
The waterproof brake cylinder according to the invention, wherein a waterproof ring seat for mounting a filter cover of front cover is arranged in the front cover, the waterproof ring seat is sleeved on a piston rod of the brake cylinder, a double-lip waterproof ring is arranged on the waterproof ring seat and between the waterproof ring seat and the piston rod, and an O seal ring is arranged on the waterproof ring seat and between the waterproof ring seat and the front cover.
The waterproof brake cylinder according to the invention, wherein a ring slot is arranged at the outer end face of the waterproof ring seat, and the O seal ring is assembled in the ring slot.
By providing an existing brake cylinder with a sealing structure at the position liable to water, the invention can effectively prevent rain water from being sucked into the cylinder by the negative pressure formed in the brake cylinder when the brake cylinder is released, thus playing the waterproof role, which increases the service life of the cylinder and ensures safe driving.
Marks in the figures: 1—brake cylinder body; 2—front cover; 3—waterproof dust cover assembly; 4—brake cylinder dust cover; 5—filter felt support; 6—filter felt pad; 7—skirt; 8—boss; 9—ring slot; 10—filter cover of front cover; 11—waterproof ring seat; 12—piston rod; 13—double—lip waterproof ring; 14—O seal ring B; and 15—release spring.
The invention will be described in detail in combination with accompanied drawings.
In order to make the purpose, technical solution and advantages of the invention more clear, the invention will be described in detail in combination with accompanied drawings and embodiments. It should be understood that various embodiments described herein are only used to explain the invention rather than defining the invention.
As shown in
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The invention makes structural improvement for the three water leakage positions A, B and C in
The above mentioned examples are preferred examples of the invention only and not used to limit the invention. Any modification, equivalent replacement and improvement made within the range of the spirit and principle of the invention shall be incorporated in the protection scope of the invention.
Number | Date | Country | Kind |
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201620304099.9 | Apr 2016 | CN | national |
201610587732.4 | Jul 2016 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2016/100735 | 9/29/2016 | WO | 00 |