CN2247129Y

CN2247129Y - Hydraulic locking controller

Info

Publication number: CN2247129Y
Application number: CN 95228268
Authority: CN
Inventors: 王明杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-12-14
Filing date: 1995-12-14
Publication date: 1997-02-12
Anticipated expiration: 2005-12-14

Abstract

The utility model relates to a hydraulic locking controller capable of being locked at the lowest point for a retarder, which comprises a retarder and a locking control mechanism, wherein, the locking control mechanism is composed of an oil cylinder, a pipeline, a plunger piston, and an electrically controlled one-way valve, and the locking at the lowest point can be reached when a power source is not switched on to ensure that the retarder does not do work on wheels; unlocking can be reached when the power source is switched on, and the hydraulic locking controller is also provided with a rolling down speed regulating function of a general retarder. The utility model can realize the automation accurate control of sliding and releasing vehicles by a railway marshalling yard.

Description

The hydraulically locking controller

The utility model relates to a kind of deceleration top controller of railway classification yard control vehicle rolling speed, particularly relates to a kind of hydraulically locking controller of nadir locking.

Existing vacuum is inhaled the controlled deceleration of following formula top, utilizes the height on barometric pressure control top, because temperature, the variation of bar pressure and the influence of mechanical vibration have reduced its control accuracy, can not make slows down realizes locking when withstanding on nadir.

The purpose of this utility model is, a kind of speed-regulating function that had both possessed the operation of slide car is provided, again can be at the hydraulically locking controller of nadir locking.

The utility model can be realized with following mode:

The hydraulically locking controller comprises slow down top and locking control mechanism, the locking control mechanism is made up of oil cylinder, pipeline, plunger and electric control one-way valve, plunger places in the oil cylinder, can be in oil cylinder crank motion, electric control one-way valve is communicated with oil cylinder top is porose, oil pipe connects hole and electric control one-way valve lower part outlet under the oil cylinder, and the top, top of slowing down is connected with plunger top, can be synchronized with the movement.

Electric control one-way valve comprises valve body, guide's valve rod, retracing spring, magnet coil and main valve, guide's valve rod upper end is an armature, insert in the main valve guide's valve rod lower end, retracing spring is placed in the outside, priority valve bar lower end, the outlet at bottom place that is pressed in valve body is sealed by retracing spring and oil pressure in the main valve bottom, and main valve bottom centre establishes a poppet port.

Top, the top chimb that slows down inserts in the plunger top groove.

The utility model has utilized the incompressible at normal temperatures and pressures characteristic of liquid, can realize slowing down and withstand on the nadir locking, promptly when the top of slowing down under the pressure wheel makes it arrive extreme lower position, hysteresis quality because of the check valve action, can only upwards go up 5 millimeters at most, guarantee to slow down and withstand on the influence that is not subjected to ambient temperature, the rise power in deceleration top own and mechanical vibration in the working process, the control accuracy height, be beneficial to the automation control that realizes the marshalling yard skating vehicle, also simplified simultaneously the structure on former deceleration top, promptly cancelled the slow backhaul on former deceleration top and ended flushing device.

Fig. 1 is the utility model integral structure scheme drawing;

Fig. 2 is Fig. 1 partial enlarged drawing 1.

The utility model is described in further detail below in conjunction with accompanying drawing:

As shown in drawings, oil cylinder 2, pipeline 3, plunger 4 and electric control one-way valve have been formed the locking mechanism of hydraulically locking controller, plunger 4 places in the oil cylinder 2, can in oil cylinder 2, pump, oil cylinder 2 sidewalls respectively have a hole up and down, electric control one-way valve is by valve body 9, guide's valve rod 6, retracing spring 7, electromagnetic valve coil 8 and main valve 11 are formed, guide's valve rod 6 upper ends are an armature, insert in the main valve 11 guide's valve rod 6 lower ends, main valve 11 is cavity cylinders, main valve 11 bottoms are pressed in outlet at bottom 5 places of valve body 9 by retracing spring 7 and oil pressure envelope, there is a poppet port 10 main valve 11 bottoms with outlet 5 opposite positions, valve body 9 and porose connection of oil cylinder 2 tops, oil pipe 3 connects oil cylinder 2 sides and closes hole and electric control one-way valve valve body 9 lower part outlets 5 under the wall, the top 1 top chimb 13 that slows down inserts in the plunger 4 top grooves 12, and linking into an integrated entity like this, deceleration top 1 can be synchronized with the movement with plunger 4.

When magnet coil 8 no powers, electric control one-way valve is closed condition, because the effect of retracing spring 7, guide's valve rod 6 bottoms are pressed on the bottom surface of main valve 11, primary valve 5 and poppet port 10 are all shut, when pressure wheel pushes up 1 to slowing down, when deceleration top 1 moves downward, driving plunger 4 also moves downward, the oil of oil cylinder 2 inner plunger 4 bottoms flows to electric control one-way valve by pipeline 3, jack-up main valve 11, upper space through valve port 5 and poppet port 10 inflow oil cylinders 2 inner plunger 4, when the top 1 of slowing down arrived the counter motion of nadir desire, because the hydraulic oil of cavity space is by main valve 11 and 6 sealings of guide's valve rod on the oil cylinder 2, the hydraulic oil impassabitity pipeline 3 of cavity space was back to 2 times cavity spaces of oil cylinder on the oil cylinder 2, the incompressible at normal temperatures characteristic of hydraulic oil, so just make that plunger 4 can not upward movement, the top 1 of slowing down can not be risen, the purpose of locking when having realized slowing down top 1 arrives nadir.

When magnet coil 8 energisings, move on guide's valve rod 6, open poppet port 10 earlier, oil cylinder 2 epicoele hydraulic oil pressure releases, guide's valve rod 6 drive main valves 11 upwards move subsequently, and primary valve 5 is opened, and hydraulic oil flows to the cavity of resorption of oil cylinder 2 by poppet port 10, primary valve 5 and oil pipe 3, plunger 4 upwards rises under the drive on the top 1 of slowing down, finish release, hydraulic oil free-flowing afterwards, plunger 4 can be with top 1 motion up or down of slowing down, no longer locking becomes common deceleration top.

Claims

1, a kind of hydraulically locking controller, comprise slow down top (1) and locking control mechanism, it is characterized in that: described locking control mechanism is made up of oil cylinder (2), pipeline (3), plunger (4) and electric control one-way valve, plunger (4) places in the oil cylinder (2), can be in oil cylinder (2) crank motion, electric control one-way valve and oil cylinder (2) the porose connection of top, oil pipe (3) connect oil cylinder (2) hole and electric control one-way valve lower part outlet (5) down, (1) top, deceleration top is connected with plunger (4) top, can be synchronized with the movement.

2, hydraulically locking controller according to claim 1, it is characterized in that: electric control one-way valve comprises valve body (9), guide's valve rod (6), retracing spring (7), magnet coil (8) and main valve (11), guide's valve rod (6) upper end is an armature, insert in the main valve (11) guide's valve rod (6) lower end, retracing spring (7) is placed in the outside, guide's valve rod (6) lower end, main valve (11) bottom is located because of retracing spring (7) and oil pressure seal the outlet at bottom (5) that is pressed in valve body (9), and main valve (11) bottom centre is provided with a poppet port (10).

3, hydraulically locking controller according to claim 1 is characterized in that: top (1) top chimb (13) that slows down inserts in plunger (4) the top groove (12).