CN2034930U

CN2034930U - Self-powered retarder

Info

Publication number: CN2034930U
Application number: CN 88206171
Authority: CN
Inventors: 杨恩久; 许学斌; 徐威风
Original assignee: Jilin Science & Technology Inst Shenyang Railway Administration
Current assignee: Jilin Science & Technology Inst Shenyang Railway Administration
Priority date: 1988-05-31
Filing date: 1988-05-31
Publication date: 1989-03-29

Abstract

The utility model relates to a self powered retarder which belongs to a speed adjusting device in hump marshalling yard. The exist retarder of the hump marshalling yard requests power source and has high cost and energy resource consumption, and thus, the self powered retarder is researched. The self powered retarder comprises an energy absorption mechanism, a self control mechanism, and a self weight balancing device. The energy of discharging heavy locomotives with high speed is converted into braking energy by the energy absorption mechanism. The utility model has the advantages of saving energy resource, low cost, high speed adjusting precision, etc.

Description

Self-powered retarder

Self-powered speed reducer is the point type speed governing equipment of gravitation marshalling yard, is specially adapted to the gravitation marshalling yard of passive delivery.

At present existing retarder need be established Hydraulic Station or pump wind supplying power.Its investment is big, the construction time is long, energy resource consumption is many.

The utility model task is: utilization has the easily capable loaded vehicle transformation of energy of certain rolling speed and becomes slowing down from the energy of hydraulic pressure energy to equip.

Task of the present utility model is that following method is finished: declared speed, declared heavily by energy transfer mechanism when the rolling operation of hump top, absorption has easy the to be capable loaded vehicle energy of certain speed, energy storage in the hig pressure storage device, when treating that retarder needs work, by the automatically controlled retarder high-pressure oil passage of opening, make the retarder action, reaching does not have extraneous supplying power, also makes retarder work; Install self-balance device below the floating rail at retarder position, it can dwindle the dispersion of retarder to hard rolling car and the high value of easy rolling car braking energy, improves the retarder adjusting speed accuracy.

This self-powered speed reducer has that cost is low, energy savings, characteristics that adjusting speed accuracy is high.

Accompanying drawing is to have described examples of implementation of the present utility model.

Fig. 1, self-powered speed reducer scheme drawing;

Fig. 2, declare heavy pump (promptly alleviating pump) side cross-sectional schematic;

Fig. 3, energy-absorbing pump side are looked scheme drawing;

Fig. 4, automatic control mechanism principle schematic;

Fig. 5, self-balance device schematic side view;

The self-powered speed reducer that is used for railway classification yard is made up of energy source station (1), automatic control mechanism (2), actuating unit (3).Energy source station is an energy absorber, and it is by declaring heavy pump (9), energy-absorbing pump (10), alleviating pump (11) formation; Automatic control mechanism (2) is made of by pass valve (7), change-over valve (8) check valve (6); Actuating unit (3) is made of TJY2 retarder, self-balance device (4); Declare heavy pump (9) and alleviate pump (11) and form by sliding shoe (12), gland (13), plunger (14), housing (15), hydraulic oil (16); Energy-absorbing pump (10) by movable cylinder (17), shell (18), declare fast valve (19), hydraulic oil (20) is formed.

Declare heavy pump (9), energy-absorbing pump (10), alleviate pump (11) and be arranged in order, be installed in and add sloping section under the hump platform.The low pressure oil of low pressure storage device is led to each pump through pipeline, makes to declare heavy pump (9), the plunger (14) of alleviating pump (11) and the movable cylinder (17) of energy-absorbing pump (10) and lift, and plunger (14) promotes sliding shoe (12) and also is stuck under the gland (13).When vehicle slips to declaring heavy pump (9), pressure wheel sliding shoe (12) moves down, plunger (14) is followed and is moved down compression hydraulic oil (16), and this oil moves guiding valve and opens (25), (27) two valve port passages through the hydraulic control valve port (24) of by pass valve (7) to change-over valve (8); Treat the slip cylinder (17) of energy-absorbing pump (10) under the pressure wheel, hydraulic oil (20) is through declaring fast valve (19), when vehicle surpasses command speed, produce the valve port (25) of high pressure oil and flow to (27) through change-over valve (8), lead to hig pressure storage device (5) and trunk line; Pressure wheel is alleviated pump (11) and is produced pressure oil, open check valve (6) passage, declare heavy pump (9) pressure piping pressure oil and lead to low pressure pipeline through check valve (6), oil pressure reduces, guiding valve restores in the change-over valve (8), oil passes to valve port (26) through valve port (25) and flows to low pressure pipeline in energy-absorbing pump (10) pressure piping, and energy-absorbing pump (10) is energy-absorbing no longer, plays mitigation.When the wheel underweight, to declare heavy pump (9) generation oil pressure and push away motionless change-over valve (8) internal spool valve, energy-absorbing pump (10) pressure piping leads to low pressure, and this moment is energy storage not.

The floating rail of actuating unit (3) is divided into self-balance device (4), and it is fixed on the floating rail by locator card (21), and spring (22) location, the bottom is spring perch (23); When vehicle slips into retarder, self-balance device under pressure wheel floating rail and the rail (4), spring (22) produces counter-force and is equivalent to the additional brake power that the retarder own wt produces wheel, this just makes gravity type retarder produce corresponding braking force by the vehicle weight size truly, and skating vehicle just carries out speed governing by the designing requirement of gravity type retarder.

Self-powered speed reducer has that cost is low, energy savings, characteristics that adjusting speed accuracy is high.

Claims

1, a kind of gravitation marshalling yard self-powered speed reducer that is used for is formed of the present utility model being characterised in that by energy source station (1), automatic control mechanism (2) and actuating unit (3):

(1) heavily form by pump (9), energy-absorbing pump (10), alleviation pump (11) by declaring for energy source station (1);

(2) automatic control mechanism (2) is made up of check valve (6), change-over valve (8), by pass valve (7);

(3) actuating unit (3) has increased a self-balance device (4).

2, according to the self-powered speed reducer of claim 1, it is characterized in that: declare heavy pump (9) and alleviate pump and form by sliding shoe (12), gland (13), plunger (14), housing (15), hydraulic oil (16).

3, according to the self-powered speed reducer of claim 1, it is characterized in that: energy-absorbing pump (10) by movable cylinder (17), shell (18), declare fast valve (19), hydraulic oil (20) is formed.

4, according to the self-powered speed reducer of claim 1, it is characterized in that: the high-pressure outlet of declaring heavy pump (9) in the automatic control mechanism (2) is connected with by pass valve (7), change-over valve (8), interface (24); Energy sink (10) high-pressure outlet links to each other with change-over valve (8) interface (25); Alleviating pump (11) high-pressure outlet links to each other with check valve (6).

5, according to the self-powered speed reducer of claim 1, it is characterized in that: self-balance device is made up of locator card (21), spring (22), spring perch (23).