Railway hand brake hand wheel

Abstract

The utility model belongs to the technical field of hand wheels, and particularly relates to a railway hand brake hand wheel which comprises a hand wheel assembly and an extension rod assembly arranged on the hand wheel assembly. The hand wheel assembly comprises an annular rim, anti-skid lines arranged on the annular rim and a spoke connected to the inner side of the annular rim. The extension rod assembly comprises an extension rod mechanism arranged in the spoke and a locking mechanism arranged on the side of the extension rod mechanism. The extension rod mechanism comprises a rod groove formed in the spoke, an extension rod placed in the rod groove, a guide block fixed to the inner side end of the extension rod and extending to the outer side of the spoke, and a guide groove formed in the spoke and allowing the guide block to penetrate through. Through the extension rod assembly, the guide block can be pushed to move along the guide groove, and the extension rod extends out of the outer side of the rod groove, so that the length of the force application end can be increased, the purpose of saving labor is achieved, smooth operation can be achieved under the condition that various hand brakes are slow, and the operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hand wheel technical field, concretely is a railway hand brake hand wheel. BACKGROUND

[0002] The railway hand brake hand wheel is the main part of the hand brake brake and the relief operation, and the hand brake of the railway freight car usually adopts the gear transmission mode to enlarge the human force from the hand wheel and then transmits to the chain device connected with the gear, and then transmits to the brake shoe through the lever transmission mechanism connected with the chain, and pushes the brake shoe to be close to and rub the wheel to realize the speed reduction and stop of the railway vehicle.

[0003] The existing railway hand brake hand wheel is usually held by the operator when using, and the operator rotates the hand wheel like the steering wheel, but in the case that the temperature difference is large in the bad weather, the hand brake may become slow, and the operator needs to use more force to operate, and the above-mentioned situation of needing more force also exists in the case of lacking lubrication, rusting of the body and obstruction of foreign matters, which often brings inconvenience to the operator, and therefore the utility model provides a railway hand brake hand wheel. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving one of the technical problems in the prior art or related art.

[0005] Therefore, the utility model adopts the technical scheme that:

[0006] A railway hand brake hand wheel, comprising: a hand wheel assembly and a extension rod assembly arranged on the hand wheel assembly; the hand wheel assembly comprises an annular rim, anti-skid lines arranged on the annular rim and spokes connected to the inner side of the annular rim; the extension rod assembly comprises an extension rod mechanism arranged in the spokes and a locking mechanism arranged on the side of the extension rod mechanism; the extension rod mechanism comprises a rod groove opened in the spokes, an extension rod placed in the rod groove, a guide block fixed to the inner side end of the extension rod and extending to the outer side of the spokes and a guide groove opened in the spokes for the guide block to pass through.

[0007] In a preferred example, the locking mechanism can be further configured as: the locking mechanism comprises a mounting groove opened in the side surface of the spoke, a support shaft mounted in the middle part of the mounting groove, a lever fixed to the support shaft, a pressing block connected to the outer side of the end part of the lever, a spring connected between the lever and the spoke, a positioning rod fixed to the other end of the lever and a positioning groove opened in the extension rod for the positioning rod to be inserted and mounted.

[0008] In a preferred example, the end part of the extension rod is provided with a sealing block.

[0009] The utility model discloses in a preferable example can be further configured as: the upper of prolongs the rod and is equipped with the handle sleeve.

[0010] The utility model discloses in a preferable example can be further configured as: the outside of mounting groove is equipped with the sealed elastic sheet fixed on spoke.

[0011] The utility model discloses in a preferable example can be further configured as: the maximum length L of prolonging the rod and the radius R of annular rim satisfy L = 0.8R ± 10%.

[0012] The above technical scheme of the utility model has the following beneficial technical effects:

[0013] 1. The utility model discloses a prolonging rod subassembly can push the guide block and move along the guide groove, and the prolonging rod is stretched to the outside of the rod groove, and this can improve the length of the force applying end, thereby achieving the purpose of saving the labor, and this can smoothly operate under the condition of various hand brakes, thereby improving the operation efficiency.

[0014] 2. The utility model discloses a prolonging rod subassembly can utilize the locking of the positioning rod and positioning groove to the prolonging rod, and after pressing the pressing block, the two can be separated, the prolonging rod is convenient to stretch, and when not using, the stability of the prolonging rod can be guaranteed, and the practicality is higher. DRAWINGS

[0015] Fig. 1 It is the railway hand brake hand wheel sectional view of the utility model;

[0016] Fig. 2 It is the railway hand brake hand wheel A place enlarged view of the utility model;

[0017] Fig. 3 It is the railway hand brake hand wheel front view of the utility model.

[0018] REFERENCE SIGNS:

[0019] 100, hand wheel assembly;110, annular rim;120, anti -slip grain;130, spoke;

[0020] 200, prolonging rod subassembly;210, rod groove;220, prolonging rod;221, sealing block;222, handle sleeve;230, guide block;240, guide groove;

[0021] 310, mounting groove;311, sealed elastic sheet;320, support shaft;330, lever;340, pressing block;350, spring;360, positioning rod;370, positioning groove. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model more clearly and obviously, the utility model is further explained in detail below in combination with specific embodiments and in reference to the drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0023] It is understood that the description is only exemplary and is not intended to limit the scope of the utility model.

[0024] Some embodiments of the utility model provide a railway hand brake hand wheel, which is described below in combination with the drawings.

[0025] In combination with Figs. 1-3 As shown in the utility model, a railway hand brake hand wheel is provided, which comprises a hand wheel assembly 100 and an extension rod assembly 200 arranged on the hand wheel assembly 100. The hand wheel assembly 100 comprises an annular rim 110, anti-skid lines 120 arranged on the annular rim 110 and spokes 130 connected to the inner side of the annular rim 110.

[0026] The extension rod assembly 200 comprises an extension rod mechanism arranged in the spokes 130 and a locking mechanism arranged on the side of the extension rod mechanism. The extension rod mechanism comprises a rod groove 210 opened in the spokes 130, an extension rod 220 placed in the rod groove 210, a guide block 230 fixed to the inner side end of the extension rod 220 and extending to the outer side of the spokes 130 and a guide groove 240 opened in the spokes 130 for the guide block 230 to pass through. The guide block 230 can be pushed to move along the guide groove 240, so that the extension rod 220 extends outwardly from the rod groove 210. In this way, the length of the force applying end can be increased, thereby achieving the purpose of saving labor. In this way, smooth operation can be achieved in the case of sluggishness of various hand brakes, and the operation efficiency is improved.

[0027] Further, the locking mechanism comprises a mounting groove 310 opened in the side surface of the spokes 130, a support shaft 320 mounted in the middle of the mounting groove 310, a lever 330 fixed to the support shaft 320, a pressing block 340 connected to the outer side of the end portion of the lever 330, a spring 350 connected between the lever 330 and the spokes 130, a positioning rod 360 fixed to the other end of the lever 330 and a positioning groove 370 opened in the extension rod 220 for the positioning rod 360 to be inserted and mounted. The positioning rod 360 and the positioning groove 370 can be used to lock the extension rod 220. After the pressing block 340 is pressed, the two can be separated, which facilitates the extension of the extension rod 220. When not in use, the stability of the extension rod 220 can be ensured, and the utility is high.

[0028] Specific, the end of the extension rod 220 is provided with a sealing block 221, which can play a sealing role at the opening of the rod groove 210, preventing the entry of external dirt when the extension rod 220 is not used, and playing a protective role.

[0029] Further, the upper part of the extension rod 220 is provided with a handle sleeve 222, which can facilitate the operator to hold the extension rod 220 and improve the operation comfort.

[0030] On the other hand, the outer side of the mounting groove 310 is provided with a sealing elastic sheet 311 fixed on the spoke 130, which can play a sealing role on the mounting groove 310 and prevent the entry of external dirt.

[0031] Further, the maximum extension length L of the extension rod 220 and the radius R of the annular rim 110 satisfy L=0.8R±10%, which can make the extension length of the extension rod 220 more ideal and facilitate the operation and use.

[0032] The working principle and use process of the utility model are as follows: first, press the side of the finger to press the block 340, the block 340 pushes one end of the lever 330, so that the other end of the positioning rod 360 is separated from the positioning groove 370, at this time, the thumb is used to push the guide block 230 to move along the guide groove 240, the finger is released when the positioning rod 360 is separated from the positioning groove 370, and finally the extension rod 220 is extended to the maximum length, at this time, the handle sleeve 222 is held and the annular rim 110 is rotated.

[0033] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A hand wheel for a railway hand brake, characterized in that The utility model relates to a hand wheel assembly (100) and a extension rod assembly (200) arranged on the hand wheel assembly (100). The hand wheel assembly (100) comprises a ring-shaped rim (110), anti-skid lines (120) arranged on the ring-shaped rim (110) and spokes (130) connected to the inner side of the ring-shaped rim (110). The extension rod assembly (200) comprises an extension rod mechanism arranged in the spokes (130) and a locking mechanism arranged on the side of the extension rod mechanism. The extension rod mechanism comprises a rod slot (210) opened in the spokes (130), an extension rod (220) placed in the rod slot (210), a guide block (230) fixed to the inner side end of the extension rod (220) and extending to the outer side of the spokes (130) and a guide slot (240) opened in the spokes (130) for the guide block (230) to pass through. The locking mechanism comprises a mounting slot (310) opened on the side of the spokes (130), a support shaft (320) mounted in the middle of the mounting slot (310), a lever (330) fixed to the support shaft (320), a pressing block (340) connected to the outer side of the end of the lever (330), a spring (350) connected between the lever (330) and the spokes (130), a positioning rod (360) fixed to the other end of the lever (330) and a positioning slot (370) opened in the extension rod (220) for the positioning rod (360) to be inserted and mounted.

2. A hand wheel for a railway hand brake according to claim 1, characterised in that The end of the extension rod (220) is provided with a sealing block (221).

3. A hand wheel for a railway hand brake according to claim 1, wherein The extension rod (220) is provided with a handle sleeve (222) on the upper side.

4. A railway hand brake hand wheel according to claim 3 wherein, The outer side of the mounting slot (310) is provided with a sealing elastic sheet (311) fixed to the spokes (130).

5. A hand wheel for a railway hand brake according to claim 2, wherein The maximum extension length L of the extension rod (220) and the radius R of the ring-shaped rim (110) satisfy L=0.8R±10%.

6. A hand wheel for a railway hand brake according to claim 1, wherein ​

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