CN201338627Y

CN201338627Y - Hand brake

Info

Publication number: CN201338627Y
Application number: CNU2008202303992U
Authority: CN
Inventors: 陶德强; 桂祖康; 刘桂军; 崔红; 王高; 陈祖顺; 任志望; 马驰
Original assignee: CSR Yangtze Co Ltd
Current assignee: CRRC Yangtze Co Ltd
Priority date: 2008-12-18
Filing date: 2008-12-18
Publication date: 2009-11-04
Anticipated expiration: 2018-12-18

Abstract

The utility model discloses a hand brake, which utilizes a two-stage gear transmission mode and comprises a casing assembly, a back plate assembly, a main driving assembly, a sprocket assembly, a control mechanism and a speed reducing machine. A middle shaft assembly is arranged between the main driving shaft assembly and the sprocket assembly, a middle shaft of the middle shaft assembly is a hollow gear shaft, two ends of the middle shaft are fixed to a casing and a back plate via bearings, a high speed stage gear wheel and a low speed stage pinion are arranged on the middle shaft, wherein the high speed stage gear wheel is meshed with a high speed gear of the main driving assembly and the low speed stage pinion is meshed with a sprocket gear of the sprocket assembly. The sprocket assembly is fixed on the casing and the back plate via bearings, the sprocket gear and a sprocket of the sprocket assembly are mounted on a sprocket shaft simultaneously, and the sprocket is engaged with a brake chain. Further, a hand brake control mechanism is installed on the main driving assembly, and the speed reducing mechanism is mounted on the back plate and connected with the middle shaft assembly.

Description

Hand brake

Technical field

The utility model relates to a kind of hand brake, especially for the hand brake device of goods train vehicle, in particular for the hand brake device of heavy duty goods train vehicle.

Background technology

Along with the development tendency of Heavy-Haul Railway, weigh the succeeding in developing of 40t lorry of axle particularly, former general purpose freight car principal mode hand brake can not meet the demands.The hand brake that need develop a kind of bigger power output adapts to higher requirement.

Summary of the invention

It is a kind of simple to operate, with low cost that the purpose of this utility model will provide exactly, dependable performance and have the hand brake of high braking potential.

The technical solution of the utility model: for realizing this purpose, the designed hand brake of the utility model adopts the two-stage gear to pass mode, comprise the case housing assy, back board assembly, the main assembly that drives, sprocket assemblies, control mechanism and speed reduction gearing, it is characterized in that: countershaft assembly is set main the driving between assembly and the sprocket assemblies, the tween drive shaft of countershaft assembly is a hollow gear shaft, the tween drive shaft two ends by bearing fixing on case shell and backboard, level big gear wheel and low speed turbine stage miniature gears are at a high speed arranged on the tween drive shaft, level big gear wheel and the main high speed gear engagement that drives assembly at a high speed, the sprocket gear engagement of low speed turbine stage miniature gears and sprocket assemblies; On case shell and backboard, the sprocket gear of sprocket assemblies and sprocket wheel are installed on the sprocket shaft sprocket assemblies simultaneously by bearing fixing, sprocket wheel and braking chain engages; Main the driving on the assembly hand brake control mechanism is housed, speed reduction gearing is installed on backboard, speed reduction gearing is connected with countershaft assembly.

Described hand brake, its hand brake control mechanism comprises that being installed in the main key that drives on the assembly imput shaft takes turns, power-transfer clutch and ratchet are fixed on the case shell 1 of case housing assy by sour jujube tongue seat and sour jujube tongue axle with the sour jujube tongue of ratchet engaged, and an end of sour jujube tongue axle is welded with the eccentrically mounted weight piece; The function handle is welded in sour jujube tongue axle 1 other end, can rotate with sour jujube tongue axle.

Described hand brake, its speed reduction gearing is the centrifugal speed reduction gearing of friction-type, comprise the friction teeth wheel shaft that is installed in backboard, slip gear is installed on the friction teeth wheel shaft, and friction lining is placed between the special-shaped webge slot and friction teeth wheel shaft axle head disk on the flanged shaft end face of slip gear; The slip gear of the centrifugal reductor of friction-type and the engagement of the high speed level big gear wheel on the tween drive shaft.

Described hand brake master drives assembly and comprises imput shaft, is installed in the high speed gear on the imput shaft and is installed in the handwheel and the end axle of both ends of main drive shaft.

Advantage of the present utility model is: one, and braking force is big, and the braking force of this device is about three times of hand brake braking force commonly used at present.Its two, functional, can actv. keep braking force, prevent the invalid action of chain.Its three, manufacture craft is simple, bearing seat and case shell, back shaped becoming one reduce time of setting up.Its four, simple to operate, working service is convenient, maintenance, to make interchangeability good, is highly suitable for the railway truck configuration of the big marshalling of heavy duty.Its five, safety is good, is provided with the centrifugal gear of friction-type, can slow down the chain wheel speed when alleviating, and prevents to alleviate too fast.

Description of drawings

Fig. 1 is a cutaway view of the present utility model.

Fig. 2 is the scheme drawing of control mechanism in the hand brake system.

Fig. 3 is the cutaway view of friction-type speed reduction gearing for the A-A view of Fig. 1.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

Fig. 1 is the cut-away view of hand brake, and this device comprises case housing assy, countershaft assembly, back board assembly, main assembly and the sprocket assemblies of driving.Described case housing assy comprises case shell 1 and is fixed on bearing seat on the case shell 1 etc. by welding manner.Described back board assembly comprises backboard 2, bearing seat etc.Case shell 1 and backboard 2 adopt die mould spare, and initiatively axle bed 24, middle axle bed 25 and sprocket wheel axle bed 26 are welded on respectively on the case shell 1, and bearing seat 36, middle axle bed 37, sprocket wheel axle bed 38 are welded on respectively on the backboard 2.

Described countershaft assembly comprises the tween drive shaft 12 of hollow gear shaft, and level big gear wheel 12.1 and low speed turbine stage miniature gears 12.2 are at a high speed arranged on the tween drive shaft 12.The described main assembly that drives comprises imput shaft 3, is enclosed within the high speed level miniature gears 43 on the imput shaft 3 and is fixed on the handwheel 5 and the end axle 42 at imput shaft 3 two ends.Described sprocket assemblies comprises sprocket shaft 20, is installed in sprocket shaft 20 upper sprocket wheel gears 4 and sprocket wheel 49, with sprocket wheel 49 ingears braking chain 52.

Present embodiment adopts the two-stage gear transmission, main the driving between assembly and the sprocket assemblies countershaft assembly is set, and the tween drive shaft 12 of countershaft assembly is fixed on case shell 1 and the backboard 2 by layshaft bearing 13, layshaft bearing 19 and bolt 14.High speed level big gear wheel 12.1 on the tween drive shaft 12 and main high speed gear 43 engagements that drive assembly, sprocket gear 4 engagements of low speed turbine stage miniature gears 12.2 and sprocket assemblies.

Described imput shaft 3, tween drive shaft 12, sprocket shaft 20 are disposed on the same plane perpendicular to backboard 2.Handwheel 5 places outside the case shell 1, rotate with imput shaft, imput shaft 3 is fixed on case shell 1 and the backboard 2 by bearing 11 and bearing 18, clickwise handwheel 5, level miniature gears 43 rotations at a high speed on the imput shaft 3, the tooth engagement of level big gear wheel 12.1 at a high speed causes tween drive shaft 12 to rotate on miniature gears 43 and the tween drive shaft 12.

Gear wheel shaft 20 is fixed on case shell 1 and the backboard 2 by sprocket sleeve 15, sprocket shaft bearing 16 and bolt 17.There is sprocket gear 4 to be connected on the gear wheel shaft 20 with sprocket wheel 49,

sprocket wheel

49 and 52 engagements of braking chain, chain 52 1 ends are fastened on the sprocket wheel 49 by chain shaft 50 and pin 51, and the other end of chain 52 is braking mouths, is fastened on the brake assemblies.When sprocket wheel 49 rotated, chain 52 was wound in the volume chain drum groove of sprocket wheel 49, and drove the brake assemblies action, implemented brake action.

As Fig. 2: main the driving on the assembly hand brake control mechanism is housed: the hand brake control mechanism comprises: ratchet 44 is enclosed within on the imput shaft 3, key wheel 45 is connected with straight pin 48 with imput shaft 3, ratchet 44 and key wheel 45 all can rotate with imput shaft 3, and power-transfer clutch 46 is enclosed within on the ratchet 44.Key is taken turns 45 rotating band dynamic clutch 46 and is rotated or move axially, and ratchet 44 extend into ratchet 44 hole slots with power-transfer clutch 46 rotations by the dog of power-transfer clutch 46.Sour jujube tongue axle 31 is fixed on the case shell 1 by sour jujube tongue seat 29, one end of sour jujube tongue axle 31 is welded with eccentrically mounted weight piece 28, influence sour jujube tongue 33 and reset with the frame 30 of dialling that prevents to be welded on the sour jujube tongue axle 31, function handle 32 is welded in sour jujube tongue axle 31 other ends and can rotates with sour jujube tongue axle 31, sour jujube tongue 33 is positioned at sour jujube tongue seat 29, be enclosed within on the sour jujube tongue axle 31, with ratchet 44 engagements.Turning handle 32, when making that by dialling frame 30 the sour jujube tongue is in braking or accent power position, level miniature gears 43 extend into ratchet 44 grooves with power-transfer clutch 46 rotations by the dog of power-transfer clutch 46 at a high speed; When alleviating the position, the dog of power-transfer clutch 46 leaves the gear groove.The dependence retracing spring 35 of power-transfer clutch 46 resets, and retracing spring 35 is fixed on the spring seat board 34, and spring seat board 34 is fixed on the case shell 1.

Turning handle makes the sour jujube tongue be in braking, alleviation or accent power position by dialling frame.In addition, overrun for preventing to alleviate, to cause that chain gets stuck and wait safety hazard, this device is installed one and is overlapped the centrifugal gear of friction-type on backboard, utilize friction force to slow down the chain wheel speed.

Fig. 3 is the cutaway view of friction-type speed reduction gearing, the centrifugal speed reduction gearing of friction-type comprise friction teeth wheel shaft 39, slip gear 21 and be placed in special-shaped webge slot on the flanged shaft end face of slip gear 21 and friction teeth wheel shaft axle head disk between friction lining 22.The slip gear 21 of the centrifugal speed reduction gearing of friction-type and 12.1 engagements of the high speed level big gear wheel on the hand brake tween drive shaft 12.Friction teeth wheel shaft 39 is fixed on the backboard 2, and slip gear 21 is enclosed within on the friction teeth wheel shaft 39, can freely rotate, and locate with packing ring 53 and back-up ring 54.This mechanism can utilize friction force to slow down the chain wheel speed, and when preventing to alleviate, the chain wheel speed is too fast.

Claims

1. hand brake, comprise the case housing assy, back board assembly, the main assembly that drives, sprocket assemblies, control mechanism and speed reduction gearing, it is characterized in that: countershaft assembly is set main the driving between assembly and the sprocket assemblies, the tween drive shaft of countershaft assembly (12) two ends by bearing fixing on case shell (1) and backboard (2), level big gear wheel (12.1) and low speed turbine stage miniature gears (12.2) are at a high speed arranged on the tween drive shaft (12), level big gear wheel (12.1) and main high speed gear (43) engagement that drives assembly at a high speed, low speed turbine stage miniature gears (12.2) meshes with the sprocket gear (4) of sprocket assemblies; On case shell (1) and backboard (2), sprocket gear of sprocket assemblies (4) and sprocket wheel (49) are installed on the sprocket shaft (20) sprocket assemblies simultaneously by bearing fixing, sprocket wheel (49) and braking chain (52) engagement; Main the driving on the assembly hand brake control mechanism is housed, goes up at backboard (2) speed reduction gearing is installed, speed reduction gearing is connected with countershaft assembly.

2. hand brake according to claim 1, it is characterized in that: the hand brake control mechanism comprises that being installed in the main key that drives on the assembly imput shaft (3) takes turns (5), power-transfer clutch (46) and ratchet (44), be fixed on the case shell (1) of case housing assy by sour jujube tongue seat (29) and sour jujube tongue axle (31) with ratchet (44) ingear sour jujube tongue (33), an end of sour jujube tongue axle (31) is connected with eccentrically mounted weight piece (28); Function handle (32) is welded in sour jujube tongue axle (31) other end, can rotate with sour jujube tongue axle (31).

3. hand brake according to claim 1 and 2, it is characterized in that: speed reduction gearing is the centrifugal speed reduction gearing of friction-type, comprise the friction teeth wheel shaft (39) that is installed in backboard (2), slip gear (21) is installed on the friction teeth wheel shaft (39), and friction lining (22) is placed between the special-shaped webge slot and friction teeth wheel shaft axle head disk on the flanged shaft end face of slip gear (21); High speed level big gear wheel (12.1) engagement on slip gear of the centrifugal reductor of friction-type (21) and the tween drive shaft (12).

4. hand brake according to claim 1 and 2 is characterized in that: the described main assembly that drives comprises imput shaft (3), is installed in the high speed gear (43) on the imput shaft (3) and is installed in the handwheel (5) and the end spool (42) at imput shaft (3) two ends.