CN201205883Y

CN201205883Y - Electric-controlled lift system

Info

Publication number: CN201205883Y
Application number: CNU2008200979642U
Authority: CN
Inventors: 韩鸣
Original assignee: CHANG'AN KUAYUE VEHICLE Co Ltd CHONGQIONG
Current assignee: CHANG'AN KUAYUE VEHICLE Co Ltd CHONGQIONG
Priority date: 2008-04-02
Filing date: 2008-04-02
Publication date: 2009-03-11
Anticipated expiration: 2018-04-02

Abstract

The utility model discloses an electricity-controlled hoisting device. An oil pump (1) is communicated with a fuel tank (2) through an oil pipe, and the output end of the oil pump (1), the fuel tank (2) and an oil cylinder (3) are respectively switched in an oil passage through the pipeline and an oil passage reversing arrangement; the oil passage reversing arrangement comprises an electromagnetic reversal valve (4), a reversal block (5) and a switch (7), wherein the electromagnetic reversal valve (4) is of a three-pisition cross-joint type, and the output end of the oil pump (1), the input end of the fuel tank (2) and the oil pipe of the oil cylinder (3) are respectively communicated with an oil inlet cavity (P), a working cavity (B), and a return oil cavity of the electromagnetic reversal valve (4) through the reversal block (5); and the switch (7) exercises control through the connection between the electrical wire and the electromagnetic reversal valve (4) . The hoisting device switches the oil passage of the whole device through the electromagnetic reversal valve, with simpler arrangement and structure, higher operating efficiency, high reliability, and only a switch electrical controller is needed in a cab, thereby ensuring simple and easy operation.

Description

Automatically controlled lifting device

Technical field

The utility model belongs to a kind of lifting device, specifically, is the automatically controlled lifting device of a kind of dumping car.

Background technology

The automobile of transportation sandstone and other items, the upset unloading that a cover lifting device is realized container all is equipped with in unloading for convenience on the car, and its mode of conveniently unloading is acceptable to all.At present, adopt maximum lifting devices generally to connect to form by oil pipe by leverage, fuel tank, oil pump, mechanical commutation valve and oil cylinder etc., during work, control mechanical change-over valve switching oil circuit by leverage and reach the work of oil pump promotion oil cylinder, also control mechanical change-over valve and switch oil circuit, the oil cylinder emptying is got back to fuel tank finish whole work by leverage.Because this cover system is that hand is moved leverage and realized, need leverage be connected with the mechanical commutation valve of car back from operator's compartment.The layout more complicated of whole device, leverage is more complicated also, and than higher, it is not easy to operate that the space is narrow and small to the space requirement of bridge operation leverage; Handle more complicated, reliability is not high.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of easy operation, comfortable automatically controlled lifting device.

The technical solution of the utility model is as follows: a kind of automatically controlled lifting device, comprise oil pump, the oil circuit reversing arrangement, fuel tank and oil cylinder, wherein be communicated with by oil pipe between oil pump and the fuel tank, this oil pump mouth, fuel tank oil inlet and oil cylinder carry out oil circuit by oil pipe through the oil circuit reversing arrangement respectively and switch, its key is: described oil circuit reversing arrangement is by solenoid directional control valve, commutation piece and switch are formed, described solenoid directional control valve is the 3-position 4-way type, described oil pump mouth, the oil pipe of fuel tank input end and oil cylinder through the oil duct of commutation on the piece respectively with the oil suction chamber of solenoid directional control valve, epitrochoidal chamber, oil back chamber is communicated with; Described switch is connected with solenoid directional control valve by electric wire to be controlled.Push switch is realized the switching of oil circuit, and oil suction chamber communicates with epitrochoidal chamber during lifting, and oil pump is to the oil cylinder fuel feeding; The lorry discharged, epitrochoidal chamber and oil back chamber are connected, and the oil cylinder emptying is got back to fuel tank, and whole work is finished.

Described solenoid directional control valve is installed on the end face at commutation piece hydraulic fluid port place by screw, have on this commutation piece and the face that solenoid directional control valve pastes mutually with solenoid directional control valve on corresponding first, second and third hydraulic fluid port of oil suction chamber, epitrochoidal chamber, oil back chamber hydraulic fluid port, described first, second and third hydraulic fluid port is communicated with the oil pipe of oil pump mouth, fuel tank input end and oil cylinder through first, second and third oil duct on the commutation piece respectively.

In described commutation piece one side pressure regulating valve is installed, has fourth, fifth oil duct in this commutation piece, the 4th oil duct piece first hydraulic fluid port that will commutate is communicated with the pressure regulating valve import, and described the 5th oil duct piece the 3rd hydraulic fluid port that will commutate is communicated with the pressure regulating valve outlet.When oil pump was excessive to the oil cylinder charge oil pressure, pressure regulating valve was opened automatically oil pump is communicated with fuel tank, formed a loop.

Beneficial effect: the utility model comes the oil circuit of whole device is switched by solenoid directional control valve, and package unit layout and structure are simpler; Driving efficiency is higher, and reliability is also high, and operator's compartment only need be installed a switch electric control, handles simple, comfortable.

Description of drawings

Fig. 1 is a connection diagram of the present utility model;

Fig. 2 is the scheme of installation of solenoid directional control valve, commutation piece and pressure regulating valve;

Fig. 3 is the structural representation of commutation piece;

Fig. 4 is the structural representation of solenoid directional control valve;

Fig. 5 is the structural representation of pressure regulating valve.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the automatically controlled lifting device of the utility model, by oil pump 1, the oil circuit reversing arrangement, compositions such as fuel tank 2 and oil cylinder 3, wherein be communicated with by oil pipe between oil pump 1 and the fuel tank 2, this oil pump 1 mouth, fuel tank 2 oil inlets and oil cylinder 3 carry out oil circuit by oil pipe through the oil circuit reversing arrangement respectively and switch, described oil circuit reversing arrangement is by solenoid directional control valve 4, commutation piece 5 and switch 7 are formed, described solenoid directional control valve 4 is the 3-position 4-way type, described oil pump 1 mouth, the oil pipe of fuel tank 2 input ends and oil cylinder 3 through the oil duct of commutation on the piece 5 respectively with the oil suction chamber P of solenoid directional control valve 4, epitrochoidal chamber B, oil back chamber T is communicated with; Described switch 7 is connected with solenoid directional control valve 4 by electric wire to be controlled.

Can further find out by Fig. 2, Fig. 3, Fig. 4, described solenoid directional control valve 4 is installed on the end face at commutation piece 5 hydraulic fluid port places by screw, have on this commutation piece 5 and the face that solenoid directional control valve 4 pastes mutually with solenoid directional control valve 4 on oil suction chamber P, epitrochoidal chamber B, corresponding first, second and third hydraulic fluid port of oil back chamber T hydraulic fluid port P ', B ', T ', described first, second and third hydraulic fluid port P ', B ', T ' are communicated with the oil pipe of oil pump 1 mouth, fuel tank 2 input ends and oil cylinder 3 through first, second and

third oil duct

5a, 5b, 5c on commutation piece 5 respectively.

Can further find out by Fig. 3, Fig. 5, in described commutation piece 5 one sides pressure regulating valve 6 is installed, have fourth,

fifth oil duct

5d, 5e in this commutation piece 5, the 4th oil duct 5d piece 5 first hydraulic fluid port P ' that will commutate are communicated with pressure regulating valve 6 import 6a, and described the 5th oil duct 5e piece 5 the 3rd hydraulic fluid port T ' that will commutate is communicated with pressure regulating valve 6 outlet 6b.

Principle of work: hand Push switch 7 is realized the switching of oil circuit, and Push switch 7 during lifting, and solenoid directional control valve 4 inner spools are shifted to an end electromagnet, and oil suction chamber P communicates with epitrochoidal chamber B, 1 pair of oil cylinder 3 fuel feeding of oil pump; The lorry discharged is shifted to other end electromagnet by switch 7 control solenoid directional control valves 4 inner spools, and epitrochoidal chamber B and oil back chamber T connect, and oil cylinder 3 emptyings are got back to fuel tank 2, and whole work is finished.

Claims

1, a kind of automatically controlled lifting device, comprise oil pump (1), the oil circuit reversing arrangement, fuel tank (2) and oil cylinder (3), wherein be communicated with by oil pipe between oil pump (1) and the fuel tank (2), described oil pump (1), fuel tank (2) all is connected the oil circuit reversing arrangement with oil cylinder (3) by oil pipe and carries out the oil circuit switching, it is characterized in that: described oil circuit reversing arrangement is by solenoid directional control valve (4), commutation piece (5) and switch (7) are formed, described solenoid directional control valve (4) is a three-position four-way valve, described oil pump (1), the oil duct of the oil pipe of fuel tank (2) and oil cylinder (3) in commutation piece (5) respectively with the oil suction chamber (P) of solenoid directional control valve (4), epitrochoidal chamber (B), oil back chamber (T) is communicated with; Described switch (7) is connected with solenoid directional control valve (4) by electric wire to be controlled.

2, according to the described automatically controlled lifting device of claim 1, it is characterized in that: described solenoid directional control valve (4) is installed on the end face of commutation piece (5) hydraulic fluid port place by screw, have on this commutation piece (5) and the face that solenoid directional control valve (4) pastes mutually with solenoid directional control valve (4) on oil suction chamber (P), epitrochoidal chamber (B), oil back chamber (T) hydraulic fluid port corresponding first, two, three hydraulic fluid ports (P ', B ', T '), described first, two, three hydraulic fluid port (P, B ', T ') respectively in commutation piece (5) first, two, three oil duct (5a, 5b, 5c) with oil pump (1), the oil pipe of fuel tank (2) and oil cylinder (3) is communicated with.

3, according to the described automatically controlled lifting device of claim 2, it is characterized in that: pressure regulating valve (6) is installed in described commutation piece (5) one sides, have fourth, fifth oil duct (5d, 5e) in this commutation piece (5), the 4th oil duct (5d) piece (5) first hydraulic fluid ports (P ') that will commutate are communicated with pressure regulating valve (6) import (6a), and described the 5th oil duct (5e) piece (5) the 3rd hydraulic fluid port (T ') that will commutate is communicated with pressure regulating valve (6) outlet (6b).