CN210565492U

CN210565492U - Hydraulic system of detection equipment for bidirectional hand pump

Info

Publication number: CN210565492U
Application number: CN201921089409.XU
Authority: CN
Inventors: 陆骏东
Original assignee: Nanjing Technological Military State Special Intelligent Equipment Research Institute Co ltd
Current assignee: Nanjing Technological Military State Special Intelligent Equipment Research Institute Co ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-05-19
Anticipated expiration: 2029-07-12

Abstract

The utility model discloses a hydraulic system for check out test set of two-way hand pump belongs to hydraulic pump detection area. Wherein, a hydraulic system that is used for check out test set of two-way hand pump includes: two-way hand pump, rotate the two-way speed control system who is connected with two-way hand pump, with the hydraulic system of two-way hand pump intercommunication to and the electrical apparatus switch board who is connected with two-way speed control system and hydraulic system, wherein, hydraulic system includes: the oil tank is communicated with the direction control group, and the pressure gauge is connected in parallel between the bidirectional hand pump and the overflow valve. The utility model discloses the numerical value of the output flow of measurement two-way hand pump under different work condition and pressure that can be accurate.

Description

Hydraulic system of detection equipment for bidirectional hand pump

Technical Field

The utility model belongs to hydraulic pump detection area, especially a hydraulic system that is used for check out test set of two-way hand pump.

Background

As a hydraulic pump which can provide power to drive an actuating mechanism for a hydraulic system in a manual manner under the condition that a main oil source such as a motor in the hydraulic system fails, a bidirectional hand pump needs to ensure that sufficient pressure and flow can be provided for the hydraulic system under the condition of manual driving, and therefore the pressure and flow output under different working conditions need to be detected.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: a hydraulic system for a detection device of a bidirectional hand pump is provided to solve the above problems in the prior art.

The technical scheme is as follows: a hydraulic system for a detection device for a bidirectional hand pump comprising: the bidirectional hand pump is a bidirectional speed regulating system which is rotationally connected with the hand pump;

hydraulic system with the hydraulic fluid port intercommunication of two-way hand pump, hydraulic system includes: the hydraulic control system comprises a bidirectional hand-operated pump, an overflow valve, a measuring cup, an oil tank and a pressure gauge, wherein the bidirectional hand-operated pump is communicated with an oil port A and an oil port B of the bidirectional hand-operated pump simultaneously and is provided with a direction control group with two oil outlets connected in parallel;

and the electrical control cabinet is connected with the hydraulic system electricity, the electrical control cabinet includes: the PLC is electrically connected with the overflow valve and the pressure gauge, and the display instrument is electrically connected with the PLC.

In a further embodiment, the bi-directional hand pump communicates with the direction control group through a quick connector and a hose, wherein the quick connector comprises: with quick-operation joint articulated joint clamp plate, with joint clamp plate articulated pull ring subassembly to and simultaneously with quick-operation joint and joint clamp plate articulated auto-lock subassembly, wherein, quick-operation joint's one end and the hydraulic fluid port spiro union of two-way hand pump, quick-operation joint's the other end cup joints in the hose, and the hose cup joints in the pull ring subassembly, and wherein, quick-operation joint is hollow round platform form with the one end that the hose cup jointed, can accomplish through quick-operation joint behind the two-way hand pump of changing different models, carries out test with the quick intercommunication of two-way hand pump and direction control group.

In a further embodiment, the direction control group comprises: the oil inlet of the P1 is communicated with the oil outlet A of the bidirectional hand-operated pump, the P2 is communicated with the oil outlet B of the bidirectional hand-operated pump, and the P3 is communicated with the oil outlet B1 of the first ball valve and the oil outlet A2 of the second ball valve at the same time, wherein the oil outlet A3 of the third ball valve is communicated with the oil inlet P of the overflow valve;

wherein, the first ball valve and the second ball valve are connected in parallel between the third ball valve and the bidirectional hand pump.

The inlet and outlet directions of the hydraulic oil of the bidirectional hand-operated pump and the final position where the hydraulic oil reaches are changed through the ball valve, so that the effect that the bidirectional hand-operated pump can provide flow and pressure under different working conditions is achieved, and the purpose of detection can be achieved under the condition that the production cost is saved.

In further embodiment, first ball valve, second ball valve and third ball valve are the tee bend ball valve, and the top of first ball valve, second ball valve and third ball valve all is equipped with the switching-over spanner, thereby changes fluid circulation direction through changing the ball valve direction according to the order spanner, reaches the purpose that detects the service behavior of the two-way hand pump of different operating modes.

In a further embodiment, the direction control group comprises: the first reversing valve and the second reversing valve are respectively communicated with an oil port of the hand pump and an oil tank, and the third reversing valve is communicated with an overflow valve and a measuring cup; an oil port communicated with the hand pump in the normal station of the first reversing valve is communicated with a through-position oil port, and an oil port communicated with the hand pump in the reversing station is communicated with a through hole; an oil port communicated with the hand pump in the normal station of the second reversing valve is communicated with an oil port leading to an oil tank, and an oil port communicated with the hand pump in the reversing station; a through-position oil port in the normal station of the third reversing valve is communicated with the measuring cup, and a through-position oil port in the reversing station is communicated with the overflow valve; wherein, the first reversing valve and the second reversing valve are connected in parallel between the third reversing valve and the bidirectional hand pump.

The direction of the inlet and outlet of the hydraulic oil of the bidirectional hand-operated pump and the position where the final hydraulic oil reaches are changed through the reversing valve, so that the effect that the bidirectional hand-operated pump can provide flow and pressure under different working conditions is achieved.

In a further embodiment, first switching-over valve, second switching-over valve and third switching-over valve are two-position three way electromagnetic directional valve, wherein, first switching-over valve, second switching-over valve and third switching-over valve all are connected with the PLC controller electricity, and the position that the business turn over direction and the final hydraulic oil that changes the hydraulic oil of two-way hand pump reach through the automatic control switching-over valve of PLC controller to reach and detect under the different operating modes two-way hand pump and can provide flow and pressure effect, can improve the degree of automation of testing process, reduce the fault rate that manual operation brought.

In a further embodiment, the hydraulic system further comprises: the pressure sensor is connected with the manometer electricity to and install the weighing sensor in graduated flask below, wherein, pressure sensor and weighing sensor still are connected with the PLC controller electricity, and through the degree of automation of the electricity of pressure sensor and weighing sensor and PLC controller improve equipment, can reduce the error rate that manual operation brought.

In a further embodiment, the appliance control cabinet further comprises: the device comprises a PLC (programmable logic controller) electrically connected with an overflow valve, a pressure gauge and a direction control group, a display instrument electrically connected with the PLC, a display screen electrically connected with the PLC, a control button installed below the display screen and electrically connected with the PLC, and a working condition of a worker for observing equipment more visually and a detection result of the equipment on the bidirectional hand pump can be obtained through the display screen.

Has the advantages that: the utility model discloses a hydraulic system for check out test set of two-way hand pump, through the different operating modes in the two-way hand pump in-service use of hydraulic system simulation, detect the flow and the pressure of the two-way hand pump output of during operation under different operating modes through graduated flask and manometer to pass through the audio-visual demonstration of electrical apparatus switch board with the in service behavior and the testing result of equipment and give the staff, the staff carries out statistical analysis to the measured data and reaches the effect that detects two-way hand pump output flow and pressure.

Drawings

Fig. 1 is a working block diagram of the first embodiment of the present invention.

Fig. 2 is a further operational block diagram of the first embodiment of the present invention.

Fig. 3 is a hydraulic schematic diagram of a second embodiment of the present invention.

Fig. 4 is a schematic view of the assembly structure of the present invention.

Fig. 5 is a schematic view of the quick coupling of the present invention.

Fig. 6 is a schematic view of the working principle of the quick coupling of the present invention.

The reference numerals shown in fig. 1 to 6 are: the bidirectional hand pump comprises a bidirectional hand pump 1, a bidirectional speed regulating system 2, a hydraulic system 3, an electrical control cabinet 4, a quick connector 12, a connector pressing plate 121, a pull ring assembly 122, a self-locking assembly 123, a hose 124, a speed reducer 21, a speed regulating motor 22, an encoder 23, a direction control group 31, an overflow valve 32, a measuring cup 33, an oil tank 34, a weighing sensor 35, a pressure gauge 36, a pressure sensor 37, a first ball valve 3101, a second ball valve 3102, a third ball valve 3103, a first reversing valve 3111, a second reversing valve 3112 and a third reversing valve 3113.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

Through the research summary of the applicant, when measuring flow and pressure to two-way hand pump, because the artifical two-way hand pump that shakes leads to the rotational speed can not keep invariable, two-way hand pump output flow is very little (< 0.5L/min), so the ordinary flowmeter can't carry out this problem of accurate measurement to two-way hand pump appearing, and this problem is that can't avoid when the people operates, so can't carry out the measuring of flow to two-way hand pump through ordinary flowmeter, so the utility model discloses a method of the average output flow of two-way hand pump is calculated to the total flow with the output detects the flow of two-way hand pump.

A detection apparatus for a bidirectional hand pump comprising: the bidirectional hand pump comprises a bidirectional hand pump 1, a bidirectional speed regulating system 2, a hydraulic system 3, an electrical control cabinet 4, a quick connector 12, a connector pressing plate 121, a pull ring assembly 122, a self-locking assembly 123, a hose 124, a speed reducer 21, a speed regulating motor 22, an encoder 23, a direction control group 31, an overflow valve 32, a measuring cup 33, an oil tank 34, a weighing sensor 35, a pressure gauge 36, a pressure sensor 37, a first ball valve 3101, a second ball valve 3102, a third ball valve 3103, a first reversing valve 3111, a second reversing valve 3112 and a third reversing valve 3113.

The bidirectional speed regulating system 2 is composed of a speed reducer 21, a speed regulating motor 22 and an encoder 23, wherein the speed regulating motor 22 is used as a power source and is rotatably connected with the input end of the speed reducer 21, the encoder 23 is electrically connected with the speed regulating motor 22 and records the number of rotation turns of the speed regulating motor 22, and manufacturers of the speed regulating motor 22, the speed reducer 21 and the encoder 23 are produced in a matched mode and have the model of MT3IK15 GN-A-3-K.

The hydraulic system 3 consists of a direction control group 31, an oil tank 34, a measuring cup 33, an overflow valve 32 and a pressure gauge 36, wherein, the bidirectional hand pump 1 is respectively communicated with an overflow valve 32, a measuring cup 33, an oil tank 34 and a pressure gauge 36 through a direction control group 31, wherein, an oil tank 34 as an oil storage container provides oil for the bidirectional hand pump 1 through a direction control group 31, an overflow valve 32 as a pressure detection element of the bidirectional hand pump 1 is connected in series with one oil outlet of the direction control group 31, a pressure gauge 36 is connected between the overflow valve 32 and the direction control group 31 in parallel, a measuring cup 33 as a flow detection element of the bidirectional hand pump 1 is placed below the two oil outlets of the direction control group 31, so that the oil can flow into the measuring cup 33 after coming out of the direction control group 31, the model of the bidirectional hand pump is S-38 SH-38.

The electrical apparatus switch board 4 is by the buncher controller, PLC controller and display instrument constitute, wherein, the PLC controller respectively with the buncher controller, buncher 22, encoder 23, overflow valve 32 and display instrument electricity are connected, wherein, the PLC controller passes through the operating mode of motor controller control buncher 22, encoder 23 detects the number of revolutions of buncher 22 and with data transmission to the PLC controller, the PLC controller adjusts the effect that overflow valve 32 reaches the different loads of simulation two-way hand pump 1, the display instrument shows the staff with the testing result of two-way hand pump 1.

The assembling process comprises the following steps: firstly, the handle of the bidirectional hand pump 1 is removed, the output end of the speed reducer 21 is rotatably connected with the input shaft of the bidirectional hand pump 1 through the coupler, then the output end of the speed regulating motor 22 is rotatably connected with the input end of the speed reducer 21, and the encoder 23 and the speed regulating motor 22 are assembled to complete the bidirectional speed regulating system 2.

Then, the direction control group 31 is communicated with the oil port A and the oil port B of the bidirectional hand pump 1, the oil inlet P of the overflow valve 32 is connected with one oil outlet of the direction control group 31 in series, then the pressure gauge 36 is connected between the direction control group 31 and the oil inlet P of the overflow valve 32 in parallel, and then the measuring cup 33 is placed below the other oil outlet of the direction control group 31 and the oil outlet T of the overflow valve 32, so that oil can finally flow into the measuring cup 33, and the assembly of the hydraulic system 3 is completed.

And then the PLC controller of the electrical control cabinet 4 is electrically connected with the speed regulating motor controller, the speed regulating motor 22, the encoder 23 and the overflow valve 32, so that the assembly of the detection equipment for the bidirectional hand pump 1 is completed.

The working principle is as follows: firstly, the direction control group 31 is adjusted to enable the oil port A of the bidirectional hand pump 1 to be communicated with the measuring cup 33, and the oil port B of the bidirectional hand pump 1 to be communicated with the oil tank 34. And then starting the speed regulating motor 22 to enable the speed regulating motor 22 to rotate clockwise, regulating the rotating speed of the speed regulating motor 22 through a control button, simulating the working state when the bidirectional hand pump 1 is shaken manually, automatically closing the speed regulating motor 22 after the speed regulating motor 22 works for a preset time, and displaying the flow test result of the instrument display equipment at the moment. Then the speed regulating motor 22 is turned off, and then the direction control group 31 is adjusted to enable the oil port A of the bidirectional hand pump 1 to be communicated with the overflow valve 32, and the oil port B of the bidirectional hand pump 1 to be communicated with the oil tank 34. And then starting the speed regulating motor 22 to enable the speed regulating motor 22 to rotate clockwise, regulating the rotating speed of the speed regulating motor 22 and the set pressure of the overflow valve 32 through a control button, simulating the working state when the bidirectional hand pump 1 is shaken manually, automatically closing the speed regulating motor 22 after the speed regulating motor 22 works for preset time, and displaying the pressure test result of the instrument display equipment at the moment. And finally, the speed regulating motor 22 is closed, the direction control group 31 is adjusted, the connection directions of the bidirectional hand-operated pump 1, the measuring cup 33, the overflow valve 32 and the oil tank 34 are opposite, and then the flow test and pressure test results of the bidirectional hand-operated pump 1 are gradually tested when the speed regulating motor 22 rotates anticlockwise according to the steps from the first step to the fourth step.

The whole working process is completed step by step, only one variable is changed when one working condition is detected in the process of detecting the bidirectional hand pump 1, variable data are strictly controlled, and detection data confusion is avoided.

In a further embodiment, in order to quickly replace the bidirectional hand pump 1 of different models, the detection test is performed on the bidirectional hand pump 1 of different models, so the bidirectional hand pump 1 is installed on the installation plate 11 matched with the installation platform of the speed reducer 21, and the bidirectional hand pump 1 is communicated with the direction control group 31 through the quick connector 12 and the hose 124.

Wherein the quick coupling 12 comprises: the quick connector comprises a connector pressing plate 121 hinged with a quick connector 12, a pull ring component 122 hinged with the connector pressing plate 121, and a self-locking component 123 hinged with the quick connector 12 and the connector pressing plate 121 simultaneously, wherein one end of the quick connector 121 is in threaded connection with an oil port of a bidirectional hand pump 1, the other end of the quick connector 121 is sleeved in a hose 124, the hose 124 is sleeved in the pull ring component 122, one end of the quick connector 121 sleeved with the hose 124 is in a hollow round table shape, when the quick connector is used, one end of the quick connector 121 is firstly in threaded connection with the oil port of the bidirectional hand pump 1, then the other end of the quick connector 121 is sleeved in the hose 124, the hose 124 is sleeved in the pull ring component, then the connector pressing plate 121 is pressed to enable the pull ring component 122 to move towards the quick connector 12, so that a gap between the pull ring component 122 and the quick connector 12 is smaller and smaller, the effect of clamping the hose 124 is achieved, and the, eventually the self-locking assembly 123 reaches a dead point sealing the interface.

In a further embodiment, in order to display the measurement result more accurately, improve the automation degree of the equipment, and reduce the error rate caused by manual operation, the hydraulic system 3 further comprises: a pressure sensor 37 electrically connected with the pressure gauge 36, and a weighing sensor 35 installed below the measuring cup 33, wherein the pressure sensor 37 is also electrically connected with the PLC controller, and the weighing sensor 35 is also electrically connected with the PLC controller.

In a further embodiment, in order to make the staff more intuitively observe the working condition of the device and the detection result of the device on the bidirectional hand pump 1, the electrical control cabinet 4 further comprises: the PLC comprises a display screen electrically connected with the PLC and a control button which is arranged below the display screen and electrically connected with the PLC.

In the use process, the display screen can display the working state of the equipment and the detection result of the flow and the pressure of the bidirectional hand pump 1.

In the first embodiment shown in fig. 1 to 2, in order to reduce the production cost of the device and reduce the skill requirement for using the device, the direction control valve is composed of a first ball valve 3101, a second ball valve 3102 and a third ball valve 3103, wherein the first ball valve 3101, the second ball valve 3102 and the third ball valve 3103 are all three-way ball valves, and reversing wrenches are arranged above the first ball valve 3101, the second ball valve 3102 and the third ball valve 3103.

Wherein, the P1 oil inlet of the first ball valve 3101 is communicated with the A oil outlet of the bidirectional hand pump 1, the P2 oil inlet of the second ball valve 3102 is communicated with the B oil outlet of the bidirectional hand pump 1, and the P3 oil inlet of the third ball valve 3103 is simultaneously communicated with the B1 oil outlet of the first ball valve 3101 and the A2 oil outlet of the second ball valve 3102, wherein the A3 oil outlet of the third ball valve 3103 is communicated with the P oil inlet of the overflow valve 32, and the first ball valve 3101 and the second ball valve 3102 are connected in parallel between the third ball valve 3103 and the bidirectional hand pump 1.

When the bidirectional hand pump is used, if the flow output condition of the bidirectional hand pump 1 when the speed regulating motor 22 rotates clockwise needs to be tested, namely, the oil port a of the bidirectional hand pump 1 is communicated with the measuring cup 33, and the oil port B of the bidirectional hand pump 1 is communicated with the oil tank 34, the reversing wrench of the first ball valve 3101 is wrenched to disconnect the oil port a1 of the first ball valve 3101 from the oil port P1, the oil port B1 is communicated with the oil port P1, the reversing wrench of the second ball valve 3102 is wrenched to disconnect the oil port a2 of the second ball valve 3102 from the oil port P2, the oil port B2 is communicated with the oil port P2, the reversing wrench of the third ball valve 3103 is wrenched to disconnect the oil port A3 of the third ball valve 3103 from the oil port P3, and the oil port B3.

If the flow output condition of the bidirectional hand pump 1 when the speed regulating motor 22 rotates counterclockwise needs to be tested, namely, the oil port B of the bidirectional hand pump 1 is communicated with the measuring cup 33, and the oil port a of the bidirectional hand pump 1 is communicated with the oil tank 34, the reversing wrench of the first ball valve 3101 is wrenched to communicate the oil port a1 of the first ball valve 3101 with the oil port P1, the oil port B1 is disconnected with the oil port P1, the reversing wrench of the second ball valve 3102 is wrenched to communicate the oil port a2 of the second ball valve 3102 with the oil port P2, the oil port B2 is disconnected with the oil port P2, the reversing wrench of the third ball valve 3103 is wrenched to disconnect the oil port A3 of the third ball valve 3103 from the oil port P3, and the oil port B3 is communicated with the.

If the pressure output of the bidirectional hand pump 1 is required on the basis of the above, the reversing wrench of the third ball valve 3103 is wrenched to connect the oil port a3 of the third ball valve 3103 with the oil port P3, and disconnect the oil port B3 from the oil port P3.

In the second embodiment shown in fig. 3, in order to improve the automation degree of the detection process and reduce the error rate caused by manual operation, the direction control group 31 includes: the control system comprises a first reversing valve 3111, a second reversing valve 3112 and a third reversing valve 3113, wherein the first reversing valve 3111, the second reversing valve 3112 and the third reversing valve 3113 are two-position three-way electromagnetic reversing valves, and the first reversing valve 3111, the second reversing valve 3112 and the third reversing valve 3113 are all electrically connected with a PLC controller.

The two-way oil ports of the first reversing valve 3111 and the second reversing valve 3112 are respectively communicated with the oil port of the hand pump and the oil tank 34, the one-way oil port of the third reversing valve 3113 is simultaneously communicated with the one-way oil ports of the first reversing valve 3111 and the second reversing valve 3112, and the two-way oil port is respectively communicated with the overflow valve 32 and the measuring cup 33.

Wherein, the oil port that communicates with the hand pump in the normal station of first switching-over valve 3111 communicates with a position oil port that leads to, and the oil port that communicates with the hand pump in the switching-over station communicates with the oil tank.

An oil port communicating with the hand pump in the normal position of the second direction valve 3112 communicates with an oil port leading to the oil tank 34, and an oil port communicating with the hand pump in the direction change position.

A through-position oil port in the normal position of the third reversing valve 3113 is communicated with the measuring cup 33, and a through-position oil port in the reversing position is communicated with the overflow valve 32.

Wherein, first direction changing valve 3111 and second direction changing valve 3112 are connected in parallel between third direction changing valve 3113 and bidirectional hand pump 1.

In the using process, if the flow output condition of the bidirectional hand pump 1 when the speed regulating motor 22 rotates clockwise needs to be tested, namely the oil port a of the bidirectional hand pump 1 is communicated with the measuring cup 33, and the oil port B of the bidirectional hand pump 1 is communicated with the oil tank 34, the electromagnet Y1 of the first reversing valve 3111 is powered off, the electromagnet Y2 of the second reversing valve 3112 is powered off, and the electromagnet Y3 of the third reversing valve 3113 is powered off, namely the first reversing valve 3111, the second reversing valve 3112 and the third reversing valve 3113 are all in a normal working position state.

If the flow output condition of the bidirectional hand pump 1 when the speed regulating motor 22 rotates counterclockwise needs to be tested, namely, the oil port B of the bidirectional hand pump 1 is communicated with the measuring cup 33, and when the oil port a of the bidirectional hand pump 1 is communicated with the oil tank 34, the electromagnet Y1 of the first reversing valve 3111 is powered on, the electromagnet Y2 of the second reversing valve 3112 is powered on, and the electromagnet Y3 of the third reversing valve 3113 is powered off, namely, the first reversing valve 3111 and the second reversing valve 3112 are in reversing stations, and the third reversing valve 3113 is in a normal station state.

On the basis, if the pressure output condition of the bidirectional hand pump 1 is needed, the electromagnet Y1 of the first reversing valve 3111 is de-energized, the electromagnet Y2 of the second reversing valve 3112 is de-energized, and the electromagnet Y3 of the third reversing valve 3113 is energized, that is, the first reversing valve 3111 and the second reversing valve 3112 are in the normal working position, and the third reversing valve 3113 is in the reversing working position state. The first direction switching valve 3111 and the second direction switching valve 3112 are then turned in accordance with the turning direction of the governor motor 22.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be modified to perform various equivalent transformations, which all belong to the protection scope of the present invention.

Claims

1. A hydraulic system for a detection device for a bi-directional hand pump, comprising: the bidirectional hand pump (1) and a bidirectional speed regulating system (2) which is rotationally connected with the hand pump;

hydraulic system (3) with the hydraulic fluid port intercommunication of two-way hand pump (1), hydraulic system (3) include: the oil pump is simultaneously communicated with an oil port A and an oil port B of the bidirectional hand-operated pump (1), and is provided with a direction control group (31) with two parallel oil outlets, an overflow valve (32) with a P oil inlet connected with one oil outlet of the direction control group (31) in series, a measuring cup (33) simultaneously communicated with the other oil outlet of the direction control group (31) and a T oil outlet of the overflow valve (32), an oil tank (34) communicated with the direction control group (31), and a pressure gauge (36) connected between the bidirectional hand-operated pump (1) and the P oil inlet of the overflow valve (32) in parallel;

and an electrical control cabinet (4) electrically connected with the hydraulic system (3), the electrical control cabinet (4) comprising: the PLC is electrically connected with the overflow valve (32) and the pressure gauge (36), and the display instrument is electrically connected with the PLC.

2. The hydraulic system of claim 1, wherein the hydraulic system comprises: the bidirectional hand pump (1) is communicated with a direction control group (31) through a quick connector (12) and a hose (124), wherein the quick connector (12) comprises: with quick-operation joint (12) articulated joint clamp plate (121), with joint clamp plate (121) articulated pull ring subassembly (122) to and simultaneously with quick-operation joint (12) and joint clamp plate (121) articulated auto-lock subassembly (123), wherein, the hydraulic fluid port spiro union of one end and two-way hand pump (1) of quick-operation joint (12), the other end of quick-operation joint (12) cup joints in hose (124), and hose (124) cup joints in pull ring subassembly (122), and wherein, the one end that quick-operation joint (12) and hose (124) cup jointed is hollow round platform form.

3. The hydraulic system of claim 1, wherein the hydraulic system comprises: the direction control group (31) comprises: a first ball valve (3101) with a P1 oil inlet communicated with an A oil outlet of the bidirectional hand pump (1), a second ball valve (3102) with a P2 oil inlet communicated with a B oil outlet of the bidirectional hand pump (1), and a third ball valve (3103) with a P3 oil inlet communicated with a B1 oil outlet of the first ball valve (3101) and an A2 oil outlet of the second ball valve (3102), wherein an A3 oil outlet of the third ball valve (3103) is communicated with a P oil inlet of the overflow valve (32);

wherein, the first ball valve (3101) and the second ball valve (3102) are connected in parallel between the third ball valve (3103) and the bidirectional hand pump (1).

4. The hydraulic system of claim 3, wherein the hydraulic system comprises: the first ball valve (3101), the second ball valve (3102) and the third ball valve (3103) are all three-way ball valves, and reversing wrenches are arranged above the first ball valve (3101), the second ball valve (3102) and the third ball valve (3103).

5. The hydraulic system of claim 1, wherein the hydraulic system comprises: the direction control group (31) comprises: a first reversing valve (3111) and a second reversing valve (3112) with two-way oil ports respectively communicated with an oil port of the hand pump and an oil tank (34), and a third reversing valve (3113) with one-way oil port simultaneously communicated with the first reversing valve (3111) and the second reversing valve (3112) and with an overflow valve (32) and a measuring cup (33);

an oil port communicated with the hand pump in a normal station of the first reversing valve (3111) is communicated with a through-position oil port, and an oil port communicated with the hand pump in a reversing station is communicated with an oil tank;

an oil port communicated with the hand pump in a normal station of the second reversing valve (3112) is communicated with an oil port communicated with an oil tank (34), and an oil port communicated with the hand pump in a reversing station is communicated with a through-position oil port;

a through position oil port in a normal working position of the third reversing valve (3113) is communicated with the measuring cup (33), and a through position oil port in a reversing working position is communicated with the overflow valve (32);

wherein the first direction valve (3111) and the second direction valve (3112) are connected in parallel between the third direction valve (3113) and the bidirectional hand pump (1).

6. The hydraulic system of claim 5, wherein the hydraulic system comprises: the first reversing valve (3111), the second reversing valve (3112) and the third reversing valve (3113) are two-position three-way electromagnetic reversing valves, wherein the first reversing valve (3111), the second reversing valve (3112) and the third reversing valve (3113) are all electrically connected with the PLC.

7. The hydraulic system of claim 1, wherein the hydraulic system comprises: the hydraulic system (3) further comprises: the pressure sensor (37) is electrically connected with the pressure gauge (36), and the weighing sensor (35) is installed below the measuring cup (33), wherein the pressure sensor (37) and the weighing sensor (35) are also electrically connected with the PLC.

8. The hydraulic system of claim 1, wherein the hydraulic system comprises: the electric appliance control cabinet (4) further comprises: the device comprises a PLC (programmable logic controller) electrically connected with an overflow valve (32), a pressure gauge (36) and a direction control group (31), a display instrument electrically connected with the PLC, a display screen electrically connected with the PLC, and a control button installed below the display screen and electrically connected with the PLC.