CN216617798U - Combined oil pump with automatic reversing function - Google Patents
Combined oil pump with automatic reversing function Download PDFInfo
- Publication number
- CN216617798U CN216617798U CN202122821549.5U CN202122821549U CN216617798U CN 216617798 U CN216617798 U CN 216617798U CN 202122821549 U CN202122821549 U CN 202122821549U CN 216617798 U CN216617798 U CN 216617798U
- Authority
- CN
- China
- Prior art keywords
- interface
- plug
- oil
- valve
- port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000012530 fluid Substances 0.000 claims description 4
- 230000006872 improvement Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 105
- 230000007246 mechanism Effects 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to the field of oil pumps, and discloses a combined oil pump with an automatic reversing function, which comprises a manual pump assembly and an electric pump, wherein the manual pump assembly is connected with the electric pump, the combined oil pump further comprises an electromagnetic reversing valve and an oil cylinder, the electromagnetic reversing valve is provided with a first interface, a second interface, a third interface and a fourth interface, the manual pump assembly is provided with a lifting oil port and an oil return port, the first interface is connected with the lifting oil port, the second interface is connected with the oil return port, the oil cylinder is provided with a rodless cavity and a rod cavity, the third interface is connected with the rodless cavity, and the fourth interface is connected with the rod cavity. When the electromagnetic directional valve is not electrified, the first interface is communicated with the third interface, and the second interface is communicated with the fourth interface; when the electromagnetic directional valve is electrified, the first interface is communicated with the fourth interface, and the second interface is communicated with the third interface. The utility model has the advantages of no need of manual reversing, automatic reversing of the electromagnetic reversing valve and safety improvement.
Description
Technical Field
The utility model relates to the field of oil pumps, in particular to a combined oil pump with an automatic reversing function.
Background
In the hydraulic pressure upset of present driver's cabin system of lifting, the use all is traditional oil pump, and utility model patent of application number CN201020207388.X discloses a driver's cabin lifts oil pump. When the traditional oil pump is used, oil is sucked into the manual reversing mechanism from the oil tank by manually pressing a rocker handle or pressing a button switch through the change of air pressure in a closed environment, and then the oil is discharged into the oil cylinder of the actuating mechanism through the reversing mechanism. However, both the manual oil pump and the electric oil pump have an unavoidable operation in the process, that is, when the state needs to be changed after the lifting or lowering process is completed, the reversing mechanism needs to be manually operated to switch the oil circuit, when the cab is heavy and the system pressure is high, the reversing operation torque is also large, and the oil pump is usually installed in a limited space below the cab, so when a vehicle owner needs to maintain to turn over the cab, the manual operation of the reversing mechanism is extremely inconvenient, and therefore, a combined oil pump without manual reversing needs to be researched.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a combined oil pump with an automatic reversing function.
In order to solve the technical problem, the utility model is solved by the following technical scheme:
the utility model provides a combination oil pump with automatic switching-over function, including manual pump package spare and electric pump, manual pump package spare and electric pump are connected, still include solenoid directional valve and hydro-cylinder, be equipped with first interface on the solenoid directional valve, the second interface, third interface and fourth interface, be equipped with on the manual pump package spare and lift hydraulic fluid port and oil return opening, first interface and the hydraulic fluid port connection that lifts, second interface and oil return opening are connected, be equipped with rodless chamber on the hydro-cylinder and have the pole chamber, third interface and rodless chamber are connected, the fourth interface with have the pole chamber to connect.
Preferably, when the electromagnetic directional valve is not electrified, the first interface is communicated with the third interface, and the second interface is communicated with the fourth interface; when the electromagnetic directional valve is electrified, the first interface is communicated with the fourth interface, and the second interface is communicated with the third interface.
Preferably, the power supply system further comprises a three-gear control switch and a wire harness relay assembly, wherein the wire harness relay assembly comprises a power supply plug-in and a relay, the three-gear control switch comprises a shifting piece, a lifting contact and a descending contact, when the shifting piece is connected with the lifting contact, the positive pole end of the power supply plug-in is connected with one end of the relay through the three-gear control switch, and the negative pole end of the power supply plug-in is connected with the other end of the relay; when the shifting sheet is connected with the descending contact, the positive end of the power supply plug-in is connected with one end of the relay through the three-gear control switch, the negative end of the power supply plug-in is connected with the other end of the relay, meanwhile, the positive end of the power supply plug-in is connected with the electromagnetic reversing valve through the three-gear control switch, the negative end of the power supply plug-in is connected with the other end of the electromagnetic reversing valve, and the electromagnetic reversing valve is connected with the relay in parallel. The three-gear control switch controls the power-off and the power-on of the electromagnetic directional valve, so that the electromagnetic directional valve can realize automatic reversing in a descending state.
Preferably, the wire harness relay assembly further comprises a motor connecting plug-in, the negative end of the power supply plug-in is connected with the motor connecting plug-in, and the other end of the motor connecting plug-in is connected with the relay. Through integrated solenoid valve of line bridle relay assembly and pencil function to make electrical function more intelligent, also make things convenient for the inspection maintenance.
Preferably, the wire harness relay assembly further comprises a first plug-in unit, a second plug-in unit and a third plug-in unit, wherein the first plug-in unit is connected with the descending contact, the electromagnetic directional valve is connected with the second plug-in unit, and the second plug-in unit is connected with the third plug-in unit. The descending contact also integrates the function of a plug-in, and the first plug-in, the second plug-in and the third plug-in are connected with each other, so that the down-type contact has the advantages of convenience in installation and maintenance.
Preferably, the electric pump comprises an oil suction port, a first one-way valve, an oil pressing port and a first overflow valve, the oil suction port is connected with the first one-way valve through a first pipeline, the first one-way valve is connected with the oil pressing port, the oil pressing port is connected with the manual pump assembly through a second pipeline, and the first overflow valve is connected with the first pipeline.
Preferably, the manual pump assembly comprises an oil inlet, a second one-way valve, a manual pump body and a third one-way valve, the oil inlet is connected with the second one-way valve, the second one-way valve is connected with the manual pump body, the manual pump body is connected with the third one-way valve, the third one-way valve is connected with the lifting oil port through a third pipeline, and the third pipeline is connected with the second pipeline. Unable oil feed when the electric pump became invalid can use manual pump subassembly to follow the oil feed of oil inlet, also can realize the oil pump function, solves the urgent need.
Preferably, the manual pump assembly further comprises a fourth one-way valve, a second overflow valve and a release valve, the fourth one-way valve is connected with the oil return port, and the manual pump body is connected with the second overflow valve.
Due to the adoption of the technical scheme, the utility model has the remarkable technical effects that: the electromagnetic directional valve automatically reverses in the switching lifting and descending states under the action of the electromagnetic directional valve, so that the oil circuit is switched, an operator does not need to manually reverse, the automatic switching of the oil circuit of the oil pump in the overturning process of the cab can be realized by operating the three-gear control switch, and the operation intensity is reduced; meanwhile, because manual reversing operation is not needed, an operator can always be in a relatively safe position in the overturning process of the cab, so that the safety is correspondingly improved, and the operation is safer. In addition, because the traditional manual reversing valve mechanism is not used, the fittings of the manual reversing valve mechanism are not needed, so that the manual pump assembly is simpler in structure, lower in processing cost and higher in assembly efficiency. The utility model has the advantages of no need of manual reversing, automatic reversing of the electromagnetic reversing valve and safety improvement.
Drawings
FIG. 1 is a schematic diagram of the hydraulic pressure principle of the present invention during lifting.
Fig. 2 is a partially enlarged view of a in fig. 1.
Fig. 3 is a hydraulic schematic diagram of the utility model during descent.
Fig. 4 is a partially enlarged view of B in fig. 3.
Fig. 5 is a schematic structural diagram of the present invention.
Fig. 6 is an electrical schematic of the present invention.
The names of the parts indicated by the numerical references in the above figures are as follows: wherein,
1-manual pump assembly, 11-air release valve, 12-fourth one-way valve, 13-second overflow valve, 14-oil inlet, 15-second one-way valve, 16-manual pump body, 17-third one-way valve, 18-lifting oil port, 19-oil return port, 110-third pipeline, 2-electric pump, 21-first one-way valve, 22-first overflow valve, 23-oil pressure port, 24-oil suction port, 25-first pipeline, 26-second pipeline, 3-electromagnetic reversing valve, 31-first interface, 32-second interface, 33-third interface, 34-fourth interface, 4-three-gear control switch, 41-lifting contact, 42-plectrum, 43-descending contact, 5-wire binding belt relay assembly, 51-power supply plug-in, 52-motor connecting plug-in, 53-relay, 54-first plug-in, 55-second plug-in, 56-third plug-in, 6-oil cylinder, 61-rodless cavity, 62-there is a rod cavity.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
The utility model provides a combination oil pump with automatic switching-over function, as shown in the figure, including manual pump package spare 1 and electric pump 2, manual pump package spare 1 and electric pump 2 are connected, still include solenoid directional valve 3 and hydro-cylinder 6, be equipped with first interface 31 on the solenoid directional valve 3, second interface 32, third interface 33 and fourth interface 34, be equipped with lifting oil port 18 and oil return 19 on the manual pump package spare 1, first interface 31 and lifting oil port 18 are connected, second interface 32 and oil return 19 are connected, be equipped with rodless chamber 61 and have pole chamber 62 on the hydro-cylinder 6, third interface 33 and rodless chamber 61 are connected, fourth interface 34 and have pole chamber 62 to connect.
When the electromagnetic directional valve 3 is not electrified, the first port 31 is communicated with the third port 33, and the second port 32 is communicated with the fourth port 34; when the electromagnetic directional valve 3 is energized, the first port 31 and the fourth port 34 communicate with each other, and the second port 32 and the third port 33 communicate with each other.
The three-gear control switch is characterized by further comprising a three-gear control switch 4 and a wire harness relay assembly 5, wherein the wire harness relay assembly 5 comprises a power supply plug-in 51 and a relay 53, the three-gear control switch 4 comprises a shifting piece 42, a lifting contact 41 and a descending contact 43, when the shifting piece 42 is connected with the lifting contact 41, the positive end of the power supply plug-in 51 is connected with one end of the relay 53 through the three-gear control switch 4, and the negative end of the power supply plug-in 51 is connected with the other end of the relay 53; when the shifting piece 42 is connected with the descending contact 43, the positive terminal of the power plug-in 51 is connected with one end of the relay 53 through the three-gear control switch 4, the negative terminal of the power plug-in 51 is connected with the other end of the relay 53, meanwhile, the positive terminal of the power plug-in 51 is connected with the electromagnetic directional valve 3 through the three-gear control switch 4, the negative terminal of the power plug-in 51 is connected with the other end of the electromagnetic directional valve 3, and the electromagnetic directional valve 3 is connected with the relay 53 in parallel. The three-gear control switch 4 controls the power-off and power-on of the electromagnetic directional valve 3, so that the electromagnetic directional valve 3 can realize automatic reversing in a descending state.
The wire harness relay assembly 5 further comprises a motor connecting plug-in unit 52, the negative end of the power plug-in unit 51 is connected with the motor connecting plug-in unit 52, and the other end of the motor connecting plug-in unit 52 is connected with the relay 53. Through the integrated solenoid valve of line bridle relay assembly 5 and pencil function to make electrical function more intelligent, also make things convenient for the inspection maintenance.
The wire harness relay assembly 5 further comprises a first plug-in 54, a second plug-in 55 and a third plug-in 56, wherein the first plug-in 54 is connected with the descending contact 43, the electromagnetic directional valve 3 is connected with the second plug-in 55, and the second plug-in 55 is connected with the third plug-in 56. The lower contact 43 also integrates a plug-in function, and the first plug-in 54, the second plug-in 55 and the third plug-in 56 are connected with each other, so that the installation is convenient and the maintenance is convenient.
The electric pump 2 comprises an oil suction port 24, a first one-way valve 21, an oil pressing port 23 and a first overflow valve 22, wherein the oil suction port 24 is connected with the first one-way valve 21 through a first pipeline 25, the first one-way valve 21 is connected with the oil pressing port 23, the oil pressing port 23 is connected with the manual pump assembly 1 through a second pipeline 26, and the first overflow valve 22 is connected with the first pipeline 25.
The manual pump assembly 1 comprises an oil inlet 14, a second one-way valve 15, a manual pump body 16 and a third one-way valve 17, wherein the oil inlet 14 is connected with the second one-way valve 15, the second one-way valve 15 is connected with the manual pump body 16, the manual pump body 16 is connected with the third one-way valve 17, the third one-way valve 17 is connected with a lifting oil port 18 through a third pipeline 110, and the third pipeline 110 is connected with a second pipeline 26. When the electric pump 2 fails, oil can not be fed, the manual pump assembly 1 can be used for feeding oil from the oil inlet 14, the function of an oil pump can be realized, and the problem of urgency is solved.
The manual pump assembly 1 further comprises a fourth one-way valve 12, a second overflow valve 13 and a deflation valve 11, wherein the fourth one-way valve 12 is connected with an oil return port 19, and a manual pump body 16 is connected with the second overflow valve 13.
The working principle is as follows:
during electric lifting:
the plectrum 42 of the three-gear control switch 4 is connected with the lifting contact 41, at the moment, the power supply is connected with a motor on the electric pump 2, the motor starts to rotate at a high speed to drive a plunger to do reciprocating motion, oil in the oil tank is sucked into a third pipeline 110 of the manual pump assembly 1 through the oil suction port 24 and the first one-way valve 21 in the air pressure change process, the electromagnetic directional valve 3 in the circuit is not electrified, so the electromagnetic directional valve 3 is not switched, the hydraulic oil passes through the first interface 31 to the third interface 33, the hydraulic oil passes through the electromagnetic directional valve 3 and enters the rodless cavity 61 of the oil tank 6, the oil in the rod cavity 62 of the oil tank 6 passes through the fourth interface 34 to the second interface 2, and flows back to the oil tank from the oil return port 19 to finish the lifting work.
During electric descent:
the plectrum 42 of the three-gear control switch 4 is connected with the descending contact 43, the power supply is connected with the motor on the electric pump 2, the motor rotates to drive the plunger to do reciprocating motion, the oil in the oil tank is sucked into the third pipeline 110 of the manual pump assembly 1 through the oil suction port 24 and the first one-way valve 21 in the air pressure change process, the electromagnetic directional valve 3 in the circuit is electrified, the electromagnetic directional valve 3 automatically reverses, the hydraulic oil flows from the first interface 31 to the fourth interface 34, the hydraulic oil flows into the rod cavity 62 of the oil tank 6 through the electromagnetic directional valve 3, the oil in the rodless cavity 61 of the oil tank 6 flows back to the oil tank from the oil return port 19 through the third interface 33, and the descending work is completed.
Therefore, the electromagnetic directional valve 3 automatically reverses in the switching lifting and descending states under the action of the electromagnetic directional valve 3, so that the oil circuit is switched, an operator does not need to manually reverse, the automatic switching of the oil circuit of the oil pump in the overturning process of the cab can be realized by operating the three-gear control switch, and the operation intensity is reduced; meanwhile, because manual reversing operation is not needed, an operator can always be in a relatively safe position in the overturning process of the cab, so that the safety is correspondingly improved, and the operation is safer. In addition, because the traditional manual reversing valve mechanism is not used, the fittings of the manual reversing valve mechanism are not needed, so that the manual pump assembly is simpler in structure, lower in processing cost and higher in assembly efficiency.
Example 2
The utility model provides a combination oil pump with automatic switching-over function, as shown in the figure, including manual pump package spare 1 and electric pump 2, manual pump package spare 1 and electric pump 2 are connected, still include solenoid directional valve 3 and hydro-cylinder 6, be equipped with first interface 31 on the solenoid directional valve 3, second interface 32, third interface 33 and fourth interface 34, be equipped with lifting oil port 18 and oil return 19 on the manual pump package spare 1, first interface 31 and lifting oil port 18 are connected, second interface 32 and oil return 19 are connected, be equipped with rodless chamber 61 and have pole chamber 62 on the hydro-cylinder 6, third interface 33 and rodless chamber 61 are connected, fourth interface 34 and have pole chamber 62 to connect.
When the electromagnetic directional valve 3 is not electrified, the first port 31 is communicated with the third port 33, and the second port 32 is communicated with the fourth port 34; when the electromagnetic directional valve 3 is energized, the first port 31 and the fourth port 34 communicate with each other, and the second port 32 and the third port 33 communicate with each other.
Example 3
The utility model provides a combination oil pump with automatic switching-over function, as shown in the figure, including manual pump package spare 1 and electric pump 2, manual pump package spare 1 and electric pump 2 are connected, still include solenoid directional valve 3 and hydro-cylinder 6, be equipped with first interface 31 on the solenoid directional valve 3, second interface 32, third interface 33 and fourth interface 34, be equipped with lifting oil port 18 and oil return 19 on the manual pump package spare 1, first interface 31 and lifting oil port 18 are connected, second interface 32 and oil return 19 are connected, be equipped with rodless chamber 61 and have pole chamber 62 on the hydro-cylinder 6, third interface 33 and rodless chamber 61 are connected, fourth interface 34 and have pole chamber 62 to connect.
When the electromagnetic directional valve 3 is not electrified, the first port 31 is communicated with the third port 33, and the second port 32 is communicated with the fourth port 34; when the electromagnetic directional valve 3 is energized, the first port 31 and the fourth port 34 communicate with each other, and the second port 32 and the third port 33 communicate with each other.
The three-gear control switch is characterized by further comprising a three-gear control switch 4 and a wire harness relay assembly 5, wherein the wire harness relay assembly 5 comprises a power supply plug-in 51 and a relay 53, the three-gear control switch 4 comprises a shifting piece 42, a lifting contact 41 and a descending contact 43, when the shifting piece 42 is connected with the lifting contact 41, the positive end of the power supply plug-in 51 is connected with one end of the relay 53 through the three-gear control switch 4, and the negative end of the power supply plug-in 51 is connected with the other end of the relay 53; when the shifting piece 42 is connected with the descending contact 43, the positive terminal of the power plug-in 51 is connected with one end of the relay 53 through the three-gear control switch 4, the negative terminal of the power plug-in 51 is connected with the other end of the relay 53, meanwhile, the positive terminal of the power plug-in 51 is connected with the electromagnetic directional valve 3 through the three-gear control switch 4, the negative terminal of the power plug-in 51 is connected with the other end of the electromagnetic directional valve 3, and the electromagnetic directional valve 3 is connected with the relay 53 in parallel. The three-gear control switch 4 controls the power-off and power-on of the electromagnetic directional valve 3, so that the electromagnetic directional valve 3 can realize automatic reversing in a descending state.
The wire harness relay assembly 5 further comprises a motor connecting plug-in unit 52, the negative end of the power plug-in unit 51 is connected with the motor connecting plug-in unit 52, and the other end of the motor connecting plug-in unit 52 is connected with the relay 53. Through the integrated solenoid valve of line bridle relay assembly 5 and pencil function to make electrical function more intelligent, also make things convenient for the inspection maintenance.
The wire harness relay assembly 5 further comprises a first plug-in 54, a second plug-in 55 and a third plug-in 56, wherein the first plug-in 54 is connected with the descending contact 43, the electromagnetic directional valve 3 is connected with the second plug-in 55, and the second plug-in 55 is connected with the third plug-in 56. The lower contact 43 also integrates a plug-in function, and the first plug-in 54, the second plug-in 55 and the third plug-in 56 are connected with each other, so that the installation is convenient and the maintenance is convenient.
Example 4
The utility model provides a combination oil pump with automatic switching-over function, as shown in the figure, including manual pump package spare 1 and electric pump 2, manual pump package spare 1 and electric pump 2 are connected, still include solenoid directional valve 3 and hydro-cylinder 6, be equipped with first interface 31 on the solenoid directional valve 3, second interface 32, third interface 33 and fourth interface 34, be equipped with lifting oil port 18 and oil return 19 on the manual pump package spare 1, first interface 31 and lifting oil port 18 are connected, second interface 32 and oil return 19 are connected, be equipped with rodless chamber 61 and have pole chamber 62 on the hydro-cylinder 6, third interface 33 and rodless chamber 61 are connected, fourth interface 34 and have pole chamber 62 to connect.
When the electromagnetic directional valve 3 is not electrified, the first port 31 is communicated with the third port 33, and the second port 32 is communicated with the fourth port 34; when the electromagnetic directional valve 3 is energized, the first port 31 and the fourth port 34 communicate with each other, and the second port 32 and the third port 33 communicate with each other.
The three-gear control switch 4 comprises a shifting piece 42, a lifting contact 41 and a descending contact 43, when the shifting piece 42 is connected with the lifting contact 41, the positive end of the power supply plug-in 51 is connected with one end of the relay 53 through the three-gear control switch 4, and the negative end of the power supply plug-in 51 is connected with the other end of the relay 53; when the shifting piece 42 is connected with the descending contact 43, the positive terminal of the power plug-in 51 is connected with one end of the relay 53 through the three-gear control switch 4, the negative terminal of the power plug-in 51 is connected with the other end of the relay 53, meanwhile, the positive terminal of the power plug-in 51 is connected with the electromagnetic directional valve 3 through the three-gear control switch 4, the negative terminal of the power plug-in 51 is connected with the other end of the electromagnetic directional valve 3, and the electromagnetic directional valve 3 is connected with the relay 53 in parallel. The three-gear control switch 4 controls the power-off and power-on of the electromagnetic directional valve 3, so that the electromagnetic directional valve 3 can realize automatic reversing in a descending state.
The wire harness relay assembly 5 further comprises a motor connecting plug-in unit 52, the negative end of the power plug-in unit 51 is connected with the motor connecting plug-in unit 52, and the other end of the motor connecting plug-in unit 52 is connected with the relay 53. Through the integrated solenoid valve of line bridle relay assembly 5 and pencil function to make electrical function more intelligent, also make things convenient for the inspection maintenance.
The wire harness relay assembly 5 further comprises a first plug-in 54, a second plug-in 55 and a third plug-in 56, wherein the first plug-in 54 is connected with the descending contact 43, the electromagnetic directional valve 3 is connected with the second plug-in 55, and the second plug-in 55 is connected with the third plug-in 56. The lower contact 43 also integrates a plug-in function, and the first plug-in 54, the second plug-in 55 and the third plug-in 56 are connected with each other, so that the installation is convenient and the maintenance is convenient.
The electric pump 2 comprises an oil suction port 24, a first one-way valve 21, an oil pressing port 23 and a first overflow valve 22, wherein the oil suction port 24 is connected with the first one-way valve 21 through a first pipeline 25, the first one-way valve 21 is connected with the oil pressing port 23, the oil pressing port 23 is connected with the manual pump assembly 1 through a second pipeline 26, and the first overflow valve 22 is connected with the first pipeline 25.
The manual pump assembly 1 comprises an oil inlet 14, a second one-way valve 15, a manual pump body 16 and a third one-way valve 17, wherein the oil inlet 14 is connected with the second one-way valve 15, the second one-way valve 15 is connected with the manual pump body 16, the manual pump body 16 is connected with the third one-way valve 17, the third one-way valve 17 is connected with a lifting oil port 18 through a third pipeline 110, and the third pipeline 110 is connected with a second pipeline 26. When the electric pump 2 fails, oil can not be fed, the manual pump assembly 1 can be used for feeding oil from the oil inlet 14, the function of an oil pump can be realized, and the problem of urgency is solved.
Claims (8)
1. A combination oil pump with automatic reversing function, includes manual pump subassembly (1) and electric pump (2), and manual pump subassembly (1) and electric pump (2) are connected, its characterized in that: still include solenoid directional valve (3) and hydro-cylinder (6), be equipped with first interface (31) on solenoid directional valve (3), second interface (32), third interface (33) and fourth interface (34), be equipped with on manual pump subassembly (1) and lift hydraulic fluid port (18) and oil return opening (19), first interface (31) and lift hydraulic fluid port (18) are connected, second interface (32) and oil return opening (19) are connected, be equipped with rodless chamber (61) and have pole chamber (62) on hydro-cylinder (6), third interface (33) and rodless chamber (61) are connected, fourth interface (34) and have pole chamber (62) to connect.
2. The combination oil pump with automatic reversing function according to claim 1, characterized in that: when the electromagnetic directional valve (3) is not electrified, the first interface (31) is communicated with the third interface (33), and the second interface (32) is communicated with the fourth interface (34); when the electromagnetic directional valve (3) is electrified, the first interface (31) is communicated with the fourth interface (34), and the second interface (32) is communicated with the third interface (33).
3. The combination oil pump with automatic reversing function according to claim 1, characterized in that: the three-gear control switch is characterized by further comprising a three-gear control switch (4) and a wire binding belt relay assembly (5), wherein the wire binding belt relay assembly (5) comprises a power supply plug-in (51) and a relay (53), the three-gear control switch (4) comprises a shifting piece (42), a lifting contact (41) and a descending contact (43), when the shifting piece (42) is connected with the lifting contact (41), the positive end of the power supply plug-in (51) is connected with one end of the relay (53) through the three-gear control switch (4), and the negative end of the power supply plug-in (51) is connected with the other end of the relay (53); when the shifting piece (42) is connected with the descending contact (43), the positive end of the power supply plug-in (51) is connected with one end of the relay (53) through the three-gear control switch (4), the negative end of the power supply plug-in (51) is connected with the other end of the relay (53), meanwhile, the positive end of the power supply plug-in (51) is connected with the electromagnetic reversing valve (3) through the three-gear control switch (4), the negative end of the power supply plug-in (51) is connected with the other end of the electromagnetic reversing valve (3), and the electromagnetic reversing valve (3) is connected with the relay (53) in parallel.
4. The combination oil pump with automatic reversing function according to claim 3, characterized in that: the wire harness relay assembly (5) further comprises a motor connecting plug-in (52), the negative end of the power supply plug-in (51) is connected with the motor connecting plug-in (52), and the other end of the motor connecting plug-in (52) is connected with the relay (53).
5. The combination oil pump with automatic reversing function according to claim 3, characterized in that: the wire harness belt relay assembly (5) further comprises a first plug-in unit (54), a second plug-in unit (55) and a third plug-in unit (56), wherein the first plug-in unit (54) is connected with the descending contact (43), the electromagnetic directional valve (3) is connected with the second plug-in unit (55), and the second plug-in unit (55) is connected with the third plug-in unit (56).
6. The combination oil pump with automatic reversing function according to claim 1, characterized in that: the electric pump (2) comprises an oil suction port (24), a first one-way valve (21), an oil pressing port (23) and a first overflow valve (22), wherein the oil suction port (24) is connected with the first one-way valve (21) through a first pipeline (25), the first one-way valve (21) is connected with the oil pressing port (23), the oil pressing port (23) is connected with the manual pump assembly (1) through a second pipeline (26), and the first overflow valve (22) is connected with the first pipeline (25).
7. The combination oil pump with automatic reversing function according to claim 6, characterized in that: the manual pump assembly (1) comprises an oil inlet (14), a second one-way valve (15), a manual pump body (16) and a third one-way valve (17), the oil inlet (14) is connected with the second one-way valve (15), the second one-way valve (15) is connected with the manual pump body (16), the manual pump body (16) is connected with the third one-way valve (17), the third one-way valve (17) is connected with a lifting oil port (18) through a third pipeline (110), and the third pipeline (110) is connected with a second pipeline (26).
8. The combination oil pump with automatic reversing function according to claim 7, characterized in that: the manual pump assembly (1) further comprises a fourth one-way valve (12), a second overflow valve (13) and a deflation valve (11), the fourth one-way valve (12) is connected with the oil return port (19), and the manual pump body (16) is connected with the second overflow valve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122821549.5U CN216617798U (en) | 2021-11-16 | 2021-11-16 | Combined oil pump with automatic reversing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122821549.5U CN216617798U (en) | 2021-11-16 | 2021-11-16 | Combined oil pump with automatic reversing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216617798U true CN216617798U (en) | 2022-05-27 |
Family
ID=81696917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122821549.5U Active CN216617798U (en) | 2021-11-16 | 2021-11-16 | Combined oil pump with automatic reversing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216617798U (en) |
-
2021
- 2021-11-16 CN CN202122821549.5U patent/CN216617798U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202482016U (en) | Diesel fork lift truck hydraulic system with safety protection mechanism | |
| CN105544645A (en) | Skid steer loader with safety protection function, and working hydraulic system of skid steer loader | |
| CN1142085C (en) | Fully-hydraulic electric fork truck | |
| CN216617798U (en) | Combined oil pump with automatic reversing function | |
| CN208417104U (en) | A kind of integrated hydraulic control system | |
| CN107269603B (en) | Lifting hydraulic system is forbidden in the walking of lift truck | |
| CN114017279A (en) | Combined oil pump with automatic reversing function | |
| CN110454460B (en) | Quick oil cylinder with pressurization function | |
| CN209566903U (en) | A kind of braking system | |
| CN202968031U (en) | Hydraulic control system used for industrial vehicle lifting device | |
| CN210710614U (en) | Hydraulic control system for electric forklift gantry | |
| CN205533567U (en) | Automatic hydraulic pressure cutting ferrule preloading device of control | |
| CN205557639U (en) | Skid -steer loader and work hydraulic system with safety protection function | |
| CN2511663Y (en) | Hydraulic electric fork lift | |
| CN209398654U (en) | Voluntarily the leakage of electricity drives scissor aerial work platform hydraulic power unit | |
| CN206129754U (en) | Tipping trailer hydraulic power units | |
| CN203157724U (en) | Clutch steering control system for hybrid power automobile | |
| CN104627080A (en) | Boarding system of large mine car | |
| CN101224860A (en) | Energy-saving hydraulic pusher for block brake | |
| CN216190462U (en) | Single track hangs engine starting device | |
| CN209936259U (en) | Welding roller frame | |
| CN110410376A (en) | The automatically controlled Reversing oil pump of integrated form | |
| CN2417085Y (en) | Telescopic, quick lifting and wheel type hydraulic jack | |
| CN219911331U (en) | Electric fork truck driver's cabin upset hydraulic system | |
| CN221794739U (en) | Mining vehicle and device for realizing emergency steering function and emergency lifting function thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |