CN2230253Y

CN2230253Y - Electric carrying vehicle

Info

Publication number: CN2230253Y
Application number: CN 95234593
Authority: CN
Inventors: 刘彦欣; 李福龙; 李英收
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-09-11
Filing date: 1995-09-11
Publication date: 1996-07-03
Anticipated expiration: 2005-09-11

Abstract

The utility model relates to an electric carrying vehicle which uses a storage battery as power and solves the problem that an electric carrying vehicle causes a fork or a hull to be ascended and descended by manpower. The utility model is characterized in that a lifting direct current machine arranged on the vehicle body is connected with an oil pump through a shaft coupling, and an oil cylinder is fixed to a balance rack. The oil pump is communicated with an oil inlet at the lower part of the oil cylinder through a one-way valve, an electromagnetic reversal valve is arranged on branch pipes of oil pipes between the oil inlet of the oil cylinder and the one-way valve, and a piston rod of the oil cylinder is fixed to the vehicle body. The electric carrying vehicle can transport materials in a short distance, realize the electric ascent and descent of the fork and the hull, and stop at a definite height.

Description

Electrocar

The utility model relates to a kind of short distance that is applicable to and transports the transport trolley of material, particularly a kind of electrocar that is used as power with storage battery.

China begins to develop the electrocar that is used as power with storage battery from the seventies." structure of electrocar and maintenance " book that in November, 1988, China Machine Press published also discloses the electrocar of several structures.But up to the present, produced with data on the electrocar introduced all only limit to be used as power and drive garage and walk with storage battery, and for the rising and falling of pallet fork or hull, still by manually suppressing, with oil pressure cylinder with pallet fork jack-up.Suppress by craft pallet fork is risen and fallen, people's the application force of suppressing reaches 35-60 kilograms, and labour intensity is big, and efficient is low.

The purpose of this utility model provides and a kind ofly is used as power with storage battery, makes pallet fork realize the electronic electrocar that rises and falls.

The utility model is achieved in that it still has pallet fork or the hull that is contained on the car body, storage battery and transmission system, the right and left at equalizer bar respectively has a balance wheel, there is a driving wheel front portion of car, rear portion the right and left of car respectively has a flower wheel, its difference is: fixing the DC machine of rising and falling, fuel tank and oil pump on car body, the DC machine of rising and falling is connected by coupler with oil pump, and the oil inlet of oil pump communicates with fuel tank with oil pipe; Oil cylinder is fixed on above the equalizer bar, and the oil outlet of oil pump communicates with the oil inlet of oil cylinder bottom by a check valve, and a solenoid directional control valve is housed on the arm of oil pipe between oil cylinder oil inlet and the check valve, and solenoid directional control valve communicates with fuel tank with oil pipe; The top of the piston rod of oil cylinder is fixed on the car body.

Overvoltage when preventing work guarantees safety, on the arm of oil pipe between oil pump and the check valve by pass valve is housed, and by pass valve communicates with fuel tank with oil pipe.

In order to prevent to leak and minimizing takes up room and pipeline, oil pump can be installed in fuel tank internal.

For the oil that penetrates into piston top by the gap between piston and the oil cylinder can in time be discharged, unlikelyly influence work, on oil cylinder top a drain tap is arranged, it communicates with fuel tank by oil pipe.

Storage battery of the present utility model does not still drive the power that garage is walked, and is the power that pallet fork is risen and fallen yet.When the needs pallet fork hoists, as long as press the shift knob of the DC machine of rising and falling, the DC machine of rising and falling running, it drives oil pump work, and pressure oil just enters the oil cylinder bottom with piston jack-up by check valve, and this just makes pallet fork rise.Because check valve is arranged, so when oil pump quits work, pallet fork is remained on the certain height.When needs fell pallet fork, as long as press the control button of solenoid directional control valve, energising made the electromagnetic switch valve events, and the oil in the oil cylinder just flows back to fuel tank through solenoid directional control valve, and at this moment piston descends, and pallet fork has just fallen.Other structures of this electrocar are identical with existing electrocar, and just rising and falling is electronic fully, thereby alleviated working strength of workers, have simple in structure, easy to use, the characteristics that efficient is high.

Fig. 1 is a front elevation of the present utility model;

Fig. 2 is the pallet fork of the present utility model part part sectional view that rises and falls;

Fig. 3 is this usefulness new type hydraulic schematic diagram.

Below in conjunction with accompanying drawing the utility model is described in detail.

Find out by accompanying drawing 1, storage battery casing 2 is housed on car body 1, rise and fall DC machine 3 and fuel tank 4 are housed in the front of car body 1.On equalizer bar 5, fixing oil cylinder 6, control capsule 7 is being arranged in the front upper place of car.

Find out by Fig. 2 and Fig. 3,4 li oil pump 8 is housed at fuel tank, oil pump 8 is connected with the DC machine 3 of rising and falling by coupler 9.The oil inlet of oil pump is connected to oil inlet, and oil outlet communicates with the oil inlet 11 of oil pipe by a check valve 10 and oil cylinder 6 bottoms.Be connected to a closed type bi-bit bi-pass solenoid directional control valve 12 on the arm of oil pipe between check valve 10 and the oil inlet 11, solenoid directional control valve 12 usefulness oil pipes communicate with fuel tank 4.Be connected to by pass valve 13 on the arm of oil pipe between oil pump 8 and the check valve 10, by pass valve 13 usefulness oil pipes communicate with fuel tank 4.On the top of oil cylinder 6 drain tap 14 is arranged, be connected to oil return pipe on it towards fuel tank.The top of the piston rod 15 of oil cylinder 6 is fixed on the car body 1, and pallet fork or hull 16 are fastened on the car body 1.

The structure of other parts of this car is identical with existing electrocar.

When the pallet fork of car need rise, press the shift knob of the DC machine 3 of rising and falling on the control capsule 7, motor 3 runnings, drive oil pump 8 work, pressure oil just enters the bottom of oil cylinder 6 through check valve 10, promote piston 17 and rise, and piston rod 15 is with regard to jack-up car body 1 and pallet fork 16 like this.When oil pump 8 quits work, because check valve 10 is arranged, pressure oil can not reflux, so at this moment piston 17 is motionless, pallet fork 16 also just remains on the certain altitude.When goods justice needs landing, press the shift knob of control solenoid directional control valve 12 on the control capsule 7, solenoid directional control valve 12 actions, the pressure oil that oil cylinder is 6 li can not pass check valve 10, but flowing back to fuel tank 4 by solenoid directional control valve 12, piston 17 descends like this, drives car body 1 and pallet fork 16 declines.When oil pump 8 work, when pressure surpassed nominal working pressure, pressure oil just directly flowed back to fuel tank 4 by by pass valve 13, to guarantee work safety.

Penetrate into the oil on piston 17 tops by the gap of piston 17 and oil cylinder 6, when piston 17 rises, flow out, flow back into fuel tank 4 through oil pipe, to guarantee normal operation by drain tap 14.

Claims

1, a kind of electrocar, it has pallet fork or the hull that is contained on the car body, storage battery and transmission system, two respectively have a balance wheel excessively about equalizer bar, there is a driving wheel front portion of car, and rear portion the right and left of car respectively has a flower wheel, it is characterized in that: fixing the DC machine of rising and falling, fuel tank and oil pump on car body, the DC machine of rising and falling is connected by coupler with oil pump, and the oil inlet of oil pump communicates with fuel tank with oil pipe; Oil cylinder is fixed on above the equalizer bar, and the oil outlet of oil pump communicates with the oil inlet of oil cylinder bottom by a check valve, and a solenoid directional control valve is housed on the arm of oil pipe between oil cylinder oil inlet and the check valve, and solenoid directional control valve communicates with fuel tank with oil pipe; The top of the piston rod of oil cylinder is fixed on the car body.

2, electrocar according to claim 1 is characterized in that: on the arm of oil pipe between oil pump and the check valve by pass valve is housed, by pass valve communicates with fuel tank with oil pipe.

3, electrocar according to claim 1 and 2, it is characterized in that: oil pump is installed in fuel tank internal.

4, electrocar according to claim 3 is characterized in that: a drain tap is arranged on oil cylinder top, and it communicates with fuel tank by oil pipe.