NSW type hand brake limiting self-buffering device

Abstract

The utility model belongs to the field of rail operation vehicles, and relates to braking of the rail operation vehicles, in particular to an NSW type hand brake limiting self-buffering device which comprises a support used for being fixed to a box shell, the support comprises a bottom plate, a first vertical plate, a second vertical plate, a third vertical plate and a fourth vertical plate, and the first vertical plate, the second vertical plate, the third vertical plate and the fourth vertical plate are welded to the upper portion of the bottom plate and arranged in sequence. The first vertical plate is close to the box shell, the fourth vertical plate is close to the hand wheel, the first vertical plate is provided with a bolt hole, the third vertical plate and the fourth vertical plate are both provided with coaxial pin holes, the pin holes are in sliding connection with a plug pin, the plug pin is in an L shape, one end, close to the hand wheel, of the plug pin is provided with a lock hole, and the lock hole is connected with a safety lock. The utility model has the advantages of simple structure, easy manufacture and convenient use, the support is fixed on the box shell, the sliding plug pin is arranged on the support, and the plug pin is inserted into the hand wheel or pulled out of the hand wheel, so that the rotation of the hand wheel is limited and the limitation is released.

Description

Technical Field

[0001] This utility model belongs to the field of rail work vehicles, and relates to the braking of rail work vehicles, and in particular to an NSW type handbrake limiting self-relaxation device. Background Technology

[0002] The NSW type handbrake is suitable for various railway freight cars for stopping or shunting. It consists of a housing, base, handwheel, speed control handle, drive shaft, chain reel shaft, and locking mechanism. For example, application number 2021229917391 discloses a new type of NSW handbrake where the operator adjusts the braking force by rotating the handwheel.

[0003] After the operator uses the NSW-type handbrake to brake the railcar, a self-releasing phenomenon may occur, resulting in a reduction in braking force and the railcar may slip. Therefore, it is urgent to develop a mechanism to solve this safety hazard. Utility Model Content

[0004] To address the aforementioned problems, this invention provides an NSW-type handbrake self-relaxing device.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an NSW-type handbrake limiting and self-releasing device, comprising a bracket for fixing to a housing, the bracket comprising a base plate and a first vertical plate, a second vertical plate, a third vertical plate, and a fourth vertical plate welded above the base plate in sequence, the first vertical plate being close to the housing, the fourth vertical plate being close to the handwheel, the first vertical plate being provided with bolt holes, the third vertical plate and the fourth vertical plate being provided with coaxial pin holes, the pin holes being slidably connected to a pin, the pin being L-shaped, the end of the pin near the handwheel being provided with a locking hole, the locking hole being connected to a safety lock.

[0006] Preferably, the distance between the second and third vertical plates is less than the length of the pin.

[0007] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0008] This utility model has a simple structure, is easy to manufacture, and is convenient to use. By fixing a bracket on the housing and setting a sliding pin on the bracket, the handwheel can be restricted or released by inserting or removing the pin. After the pin is inserted into the handwheel, a safety lock is connected to the end of the pin to prevent the pin from being removed, thus ensuring that the handwheel will not rotate and realizing the self-releasing restriction of the NSW type handbrake. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 A cross-sectional view of the installation structure of an NSW type handbrake self-relaxation device;

[0011] Figure 2 This is a schematic diagram of the handwheel.

[0012] In the above figures, 1. Box shell; 2. Handwheel; 3. Bracket; 31. First vertical plate; 32. Second vertical plate; 33. Third vertical plate; 34. Fourth vertical plate; 4. Bolt; 5. Safety lock. Detailed Implementation

[0013] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0014] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0015] like Figure 1 , Figure 2 As shown, an NSW-type handbrake self-relaxation device includes a bracket 3 for fixing to a housing 1. The bracket 3 includes a base plate and a first vertical plate 31, a second vertical plate 32, a third vertical plate 33, and a fourth vertical plate 34 welded on the top of the base plate in sequence. The first vertical plate 31 is close to the housing 1, and the fourth vertical plate 34 is close to the handwheel 2. The first vertical plate 31 is provided with bolt holes, and the third vertical plate 33 and the fourth vertical plate 34 are both provided with coaxial pin holes. The pin holes are slidably connected to a pin 4, or in other words, the pin 4 passes through the third vertical plate 33 and the fourth vertical plate 34. The pin 4 is L-shaped, and the end of the pin 4 near the handwheel 2 is provided with a locking hole, which is connected to a safety lock 5.

[0016] To facilitate the use of this utility model, the following improvements are made to the NSW type handbrake: holes are drilled on the housing 1 corresponding to the bolt holes so that the bracket 3 can be fixed to the housing 1 by bolt connection; and several holes are drilled on the handwheel 2 corresponding to the pin 4 so that one end of the pin 4 can pass through the handwheel 2.

[0017] Specifically, in order to prevent the NSW-type handbrake from self-releasing, this invention fixes the bracket 3 to the stationary housing 1. The bracket 3 is provided with a pin 4 that can slide close to / away from the handwheel 2. When the pin 4 is inserted into the handwheel 2, the rotation of the handwheel 2 is restricted, thus preventing the NSW-type handbrake from self-releasing. At the same time, this invention connects a safety lock 5 to the end of the pin 4. The safety lock 5 cannot pass through the handwheel 2, so that the pin 4 cannot be pulled out of the handwheel 2.

[0018] Furthermore, the distance between the second vertical plate 32 and the third vertical plate 33 is less than the length of the pin 4, so that the pin 4 will not detach from the bracket.

[0019] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A NSW type hand brake engine limiting self slackening device, characterized in that, The utility model provides a kind of support for fixing on box shell, the support includes a bottom plate and sequentially arranged first vertical plate, second vertical plate, third vertical plate, fourth vertical plate welded above bottom plate, first vertical plate is close to box shell, fourth vertical plate is close to hand wheel, first vertical plate is provided with bolt hole, third vertical plate and fourth vertical plate are all provided with coaxial pinhole, pinhole is slidably connected with latch, latch is L-shaped, and the end of latch close to hand wheel is provided with lock hole, and lock hole is connected with safety lock.

2. A NSW type hand brake rigging self slackening device according to claim 1, wherein, The distance between the second vertical plate and the third vertical plate is less than the length of the latch.

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