CN209398654U - Voluntarily the leakage of electricity drives scissor aerial work platform hydraulic power unit - Google Patents
Voluntarily the leakage of electricity drives scissor aerial work platform hydraulic power unit Download PDFInfo
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- CN209398654U CN209398654U CN201822253462.0U CN201822253462U CN209398654U CN 209398654 U CN209398654 U CN 209398654U CN 201822253462 U CN201822253462 U CN 201822253462U CN 209398654 U CN209398654 U CN 209398654U
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Abstract
The utility model relates to a kind of voluntarily leakages of electricity to drive scissor aerial work platform hydraulic power unit, belong to aerial work platform hydraulic system technical field.It, which is used, is fixed with direct current generator at the rear flange end of pump seat, it is connect with hydraulic power unit valve block by bolt by pump seat oil circuit and valve block oil communication above pump seat, pump seat oil inlet is equipped at the forward flange end of pump seat, gear pump is fixed on the flange face of pump seat oil inlet position, the input shaft of gear pump is connected with the output shaft of direct current generator by shaft coupling, oil inlet pipe is equipped in gear pump rear cover, oil inlet pipe end installs oil absorption filter, pump seat flange face is equipped with oil return pipe, and oil inlet pipe and oil return pipe are located in fuel tank.The utility model power unit hydraulic valve block Highgrade integration and optimization design, so that the oil circuit pressure loss in system is small, job platform volume and weight can be mitigated, allow to enter the room operation, design integrated simultaneously reduces the arrangement of pipeline, and the risk on oil leaking pollution ground is preferably minimized.
Description
Technical field
The utility model relates to a kind of voluntarily leakages of electricity to drive scissor aerial work platform hydraulic power unit, and power may be implemented
Rising, gravity decline and turning function, belong to aerial work platform hydraulic system technical field.
Background technique
Generally there is lifting, walking, turning function, domestic tradition scissor high altitude operation from walking scissor aerial work platform
Platform Hydraulic System is full hydraulic drive, and system is made of fuel tank, power unit, control valve group, hydraulic motor, hydraulic cylinder,
It is connected between each section with oil pipe, this hydraulic system volume is big, and noise is big, pollution is easily caused, to direct current generator and control valve
Group performance requirement is higher, and structure is complicated, expensive.It is increasingly wider with being applied at home from walking scissor aerial work platform
General, indoor use occasion is also more and more, this just has its noise, volume, reliability, price etc. higher and higher
Demand, the aerial work platform of traditional full hydraulic drive are no longer satisfied market needs.
Summary of the invention
In place of the purpose of this utility model is to overcome above-mentioned deficiency, it is flat to provide a kind of voluntarily leakage of electricity drive scissor high altitude operation
Platform hydraulic power unit, the design of power unit hydraulic valve block Highgrade integration and optimization design, so that the oil circuit pressure in system
It loses small, job platform volume and weight can be mitigated, allow to enter the room operation, while integrated design reduces pipeline
Arrangement, the risk on oil leaking pollution ground is preferably minimized.
According to technical solution provided by the utility model, the voluntarily leakage of electricity drives scissor aerial work platform hydraulic power list
Member further includes fuel tank, oil absorption filter, direct current generator, gear pump, pump seat, hydraulic power unit valve block and shaft coupling, in pump seat
Rear flange end be fixed with direct current generator, connect with hydraulic power unit valve block by pump seat oil circuit above pump seat by bolt and
Valve block oil communication is equipped with pump seat oil inlet at the forward flange end of pump seat, fixes on the flange face of pump seat oil inlet position with teeth
Wheel pump, the input shaft of gear pump are connected with the output shaft of direct current generator by shaft coupling, are equipped with oil inlet pipe in gear pump rear cover, into
Oil absorption filter is installed in oil pipe end, and pump seat flange face is equipped with oil return pipe, oil inlet pipe, oil return pipe, gear pump and oil suction filtering
Device is located in fuel tank, and fuel tank is connected and fixed by bolt and pump seat.
The hydraulic power unit valve block is equipped with the first oil outlet, second as a further improvement of the utility model,
Oil outlet and third oil outlet.
The hydraulic power unit further includes system overflow valve, check valve, two as a further improvement of the utility model,
Position four-way electromagnetic reversing valve, turns to low pressure relief valve and balanced valve at three-position four-way electromagnetic directional valve, is equipped on the pump seat
System overflow valve, check valve, two four-way electromagnetic reversing valves and balanced valve, 3-position 4-way electromagnetism is equipped in the valve block and is changed
To valve and low pressure relief valve is turned to, oil absorption filter is connect with fuel tank and gear pump respectively by oil inlet pipe, the gear pump point
Not Tong Guo pump seat internal oil passages connect with system overflow valve and check valve, the system overflow valve is connected by pump seat internal oil passages
Fuel tank, the check valve are connect by pump seat internal oil passages with two four-way electromagnetic reversing valves, two four-way electromagnetics commutation
Valve passes through pump seat internal oil passages respectively and connect with balanced valve, by pump seat internal oil passages and valve block internal oil passages and 3-position 4-way electricity
Magnetic reversal valve and steering low pressure relief valve connection, the three-position four-way electromagnetic directional valve turn to low pressure relief valve, by pump seat
Portion's oil circuit connects fuel tank with valve block internal oil passages, and the balanced valve connects fuel tank, the 3-position 4-way electromagnetic switch by pump seat
Valve is connected to the second oil outlet and third oil outlet respectively by valve block internal oil passages, and two four-way electromagnetic reversing valves pass through
Pump seat internal oil passages and valve block internal oil passages are connected to the first oil outlet in hydraulic power unit valve block.
The oil that the three-position four-way electromagnetic directional valve is connect with the second oil outlet as a further improvement of the utility model,
Road is equipped with the first damping hole.
The oil that the three-position four-way electromagnetic directional valve is connect with third oil outlet as a further improvement of the utility model,
Road is equipped with the second damping hole.
The direct current generator tail cover can be dismantled as a further improvement of the utility model, directly more in maintenance
Change carbon brush for electric machine.
Compared with the prior art the utility model has the advantage that
The power unit hydraulic valve block Highgrade integration of the utility model designs and optimization design, so that the oil circuit in system
The pressure loss is small, and entire power unit is small in size, light-weight, and then mitigates job platform volume and weight, allows to enter
Office operation, while integrated design reduces the arrangement of pipeline, and the risk on oil leaking pollution ground is preferably minimized；Three fuel-displaced
The position of mouth keeps stringing convenient, saves space；It is cheap using low-power motor；Use low-noise gear pump, lower noise
10 decibels or more, greatly improve operation comfort level；Motor tail cover can be dismantled, and can directly replace motor carbon in maintenance
Brush is time saving and energy saving without dismantling entire power unit；Turning to low pressure relief valve and being used cooperatively for damping hole can make platform exist
It is smoothly turned under low-pressure, energy-saving safe；Balanced valve can make platform under different loads can steady uniform descent, safety
It is high.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is the utility model Fig. 1 structure right view.
Fig. 3 is the utility model hydraulic system principle figure.
Description of symbols: fuel tank 1, oil absorption filter 2, direct current generator 3, gear pump 4, system overflow valve 5, check valve 6,
Two four-way electromagnetic reversing valves 7, turn to low pressure relief valve 9, balanced valve 10, the first damping hole at three-position four-way electromagnetic directional valve 8
11, the second damping hole 12, pump seat 14, hydraulic power unit valve block 15, shaft coupling 16, oil return pipe 17 and oil inlet pipe 18.
Specific embodiment
The utility model will be further described in conjunction with the embodiment in attached drawing below:
As Figure 1-Figure 2,
It includes fuel tank 1, oil absorption filter 2, direct current that the voluntarily leakage of electricity, which drives scissor aerial work platform hydraulic power unit,
Motor 3, system overflow valve 5,6, two four-way electromagnetic reversing valves 7 of check valve, three-position four-way electromagnetic directional valve 8, turns gear pump 4
To low pressure relief valve 9, balanced valve 10, pump seat 14 and hydraulic power unit valve block 15.It is fixed with directly at the rear flange end of pump seat 14
Galvanic electricity machine 3 is connect with hydraulic power unit valve block 15 by bolt by pump seat oil circuit and valve block oil communication above pump seat 14,
It is equipped with pump seat oil inlet A at the forward flange end of pump seat 14, is fixed with gear pump 4, gear on pump seat oil inlet location A flange face
The input shaft of pump 4 is connected with the output shaft of direct current generator 3 by shaft coupling 16, is equipped with oil inlet pipe 18, oil inlet in 4 rear cover of gear pump
Oil absorption filter 2 is installed in 18 end of pipe, and pump seat flange face is equipped with oil return pipe 17, oil inlet pipe 18, oil return pipe 17,4 and of gear pump
Oil absorption filter 2 is located in fuel tank 1, and fuel tank 1 is connected and fixed by bolt with pump seat 14, the first oil outlet B, the second oil outlet C,
Third oil outlet D is set in the valve block 15 of hydraulic system.
The hydraulic power unit further includes system overflow valve 5,6, two, check valve four-way electromagnetic reversing valve 7, three four
Electric change valve 8 turns to low pressure relief valve 9 and balanced valve 10, and system overflow valve 5, unidirectional is equipped on the pump seat 14
6, two four-way electromagnetic reversing valves 7 of valve and balanced valve 10 are equipped with three-position four-way electromagnetic directional valve 8 and are turned in the valve block 15
To low pressure relief valve 9, oil absorption filter 2 is connect with fuel tank 1 and gear pump 4 respectively by oil inlet pipe 18, and the gear pump 4 is distinguished
It is connect by 14 internal oil passages of pump seat with system overflow valve 5 and check valve 6, the system overflow valve 5 passes through 14 interior oil of pump seat
Road connects fuel tank 1, and the check valve 6 is connect by 14 internal oil passages of pump seat with two four-way electromagnetic reversing valves 7, and described two four
Electric change valve 7 is connect, by 14 internal oil passages of pump seat and valve block 15 with balanced valve 10 respectively by 14 internal oil passages of pump seat
Internal oil passages are connect with three-position four-way electromagnetic directional valve 8 and steering low pressure relief valve 9, and the three-position four-way electromagnetic directional valve 8 turns
Fuel tank 1 is connected with 15 internal oil passages of valve block to low pressure relief valve 9, by 14 internal oil passages of pump seat, the balanced valve 10 passes through pump
Seat 14 connects fuel tanks 1, the three-position four-way electromagnetic directional valve 8 by 15 internal oil passages of valve block respectively with the second oil outlet C and the
Three oil outlet D connection, two four-way electromagnetic reversing valves 7 by 14 internal oil passages of pump seat and 15 internal oil passages of valve block with it is hydraulic
The first oil outlet B connection in power unit valve block 15.
The oil circuit that the three-position four-way electromagnetic directional valve 8 is connect with the second oil outlet C is equipped with the first damping hole 11.It is described
The oil circuit that three-position four-way electromagnetic directional valve 8 is connect with third oil outlet D is equipped with the second damping hole 12.3 tail of direct current generator
Portion's end cap can be dismantled, and directly replace carbon brush for electric machine in maintenance.
The working principle of the utility model is as follows:
When lifting process: connecting external power supply, direct current generator 3 starts, and two four-way electromagnetic reversing valves 7 obtain electric, direct current
Machine 3 drives gear pump 4, the oil suction from fuel tank 1 of gear pump 4 by shaft coupling 16, and oil liquid enters pump seat 14, passes sequentially through and be mounted on
8 of 6, two four-way electromagnetic reversing valves of check valve on pump seat 14 enter 15 to the first hydraulic fluid port B of valve block, lift with aerial work platform
It is communicated on oil-lifting jar rodless cavity, hydraulic cylinder starts to stretch out, and when hydraulic cylinder is to designated position, direct current generator 3 is powered off, lifting
Oil cylinder rodless cavity solenoid valve pressure maintaining, hydraulic cylinder is slack, and construction personnel can start operation.
When decline process: elevating ram rodless cavity solenoid valve obtains electric, and rodless cavity oil liquid enters pump through the first hydraulic fluid port of valve block B
Seat, two position four-way solenoid valves 7 lose point and are in left position, and oil liquid enters after pump seat successively by two position four-way solenoid valves 7, balanced valve
10, fuel tank is returned to through oil return pipe 17 on pump seat, hydraulic cylinder starts to retract, until elevating ram rodless cavity solenoid valve power loss.
When left steering process: connecting external power supply, direct current generator 3 starts, and 8 left side coil of three-position four-way electromagnetic directional valve obtains
Electricity, direct current generator 3 drive gear pump 4, the oil suction from fuel tank 1 of gear pump 4 by shaft coupling 16, and oil liquid enters pump seat 14, successively
Enter pump seat by the 7 of 6, two four-way electromagnetic reversing valves of check valve being mounted on pump seat 14, through on three position four-way electromagnetic valve 8
Damping hole 11 to valve block the second hydraulic fluid port C, steering cylinder stretches out to the right, while steering cylinder right chamber oil liquid enters valve block third oil
Mouth D successively enters pump seat through damping hole 12, three-position four-way electromagnetic directional valve 8, eventually passes back to fuel tank 1.Due to the limit of damping hole 11
Stream effect, can make flow constant, and go to action is steady, simultaneously because low pressure turns to the presence of overflow valve 9, make system pressure
Power reduces, energy-saving safe.
When right turn process: connecting external power supply, direct current generator 3 starts, and 8 right side coil of three-position four-way electromagnetic directional valve obtains
Electricity, direct current generator 3 drive gear pump 4, the oil suction from fuel tank 1 of gear pump 4 by shaft coupling 16, and oil liquid enters pump seat 14, successively
Enter pump seat by the 7 of 6, two four-way electromagnetic reversing valves of check valve being mounted on pump seat 14, through on three position four-way electromagnetic valve 8
Damping hole 12 to valve block third hydraulic fluid port D, steering cylinder stretches out to the left, while steering cylinder right chamber oil liquid enters the oil of valve block second
Mouth C successively enters pump seat through damping hole 11, three-position four-way electromagnetic directional valve 8, eventually passes back to fuel tank 1.Due to the limit of damping hole 12
Stream effect, can make flow constant, and go to action is steady, simultaneously because low pressure turns to the presence of overflow valve 9, make system pressure
Power reduces, energy-saving safe.
Claims (6)
1. a kind of voluntarily leakage of electricity drives scissor aerial work platform hydraulic power unit, including fuel tank (1) and direct current generator (3),
It is characterized in: further includes oil absorption filter (2), gear pump (4), pump seat (14), hydraulic power unit valve block (15) and shaft coupling
(16), direct current generator (3) are fixed at the rear flange end of pump seat (14), pass through bolt and hydraulic power list above pump seat (14)
First valve block (15) connection is equipped with pump seat oil inlet A by pump seat oil circuit and valve block oil communication, at the forward flange end of pump seat (14),
It is fixed with gear pump (4) on pump seat oil inlet A flange face, the output shaft of the input shaft and direct current generator (3) of gear pump (4) passes through
Shaft coupling (16) is connected, and is equipped with oil inlet pipe (18) in gear pump (4) rear cover, and oil absorption filter (2) are installed in oil inlet pipe (18) end,
Pump seat flange face is equipped with oil return pipe (17), and oil inlet pipe (18), oil return pipe (17), gear pump (4) and oil absorption filter (2) are located at
In fuel tank (1), fuel tank (1) is connected and fixed by bolt with pump seat (14).
2. voluntarily the leakage of electricity drives scissor aerial work platform hydraulic power unit as described in claim 1, it is characterized in that: the liquid
Pressure power unit valve block (15) is equipped with the first oil outlet B, the second oil outlet C and third oil outlet D.
3. voluntarily the leakage of electricity drives scissor aerial work platform hydraulic power unit as described in claim 1, it is characterized in that: the liquid
Pressure power unit further includes that system overflow valve (5), check valve (6), two four-way electromagnetic reversing valves (7), 3-position 4-way electromagnetism change
To valve (8), low pressure relief valve (9) and balanced valve (10) are turned to, system overflow valve (5), list are installed on the pump seat (14)
To valve (6), two four-way electromagnetic reversing valves (7) and balanced valve (10), 3-position 4-way electromagnetism is installed on the valve block (15)
Reversal valve (8) and turn to low pressure relief valve (9), oil absorption filter (2) by oil inlet pipe (18) respectively with fuel tank (1) and gear pump
(4) it connecting, the gear pump (4) is connect by pump seat (14) internal oil passages with system overflow valve (5) and check valve (6) respectively,
The system overflow valve (5) is passed through in pump seat (14) by pump seat (14) internal oil passages connection fuel tank (1), the check valve (6)
Portion's oil circuit is connect with two four-way electromagnetic reversing valves (7), and two four-way electromagnetic reversing valves (7) are respectively by pump seat (14)
Portion's oil circuit connect with balanced valve (10), is changed by pump seat (14) internal oil passages and valve block (15) internal oil passages and 3-position 4-way electromagnetism
To valve (8) and low pressure relief valve (9) connection is turned to, the three-position four-way electromagnetic directional valve (8) turns to low pressure relief valve (9), is logical
It crosses pump seat (14) internal oil passages to connect fuel tank (1) with valve block (15) internal oil passages, the balanced valve (10) is connected by pump seat (14)
Connected tank (1), the three-position four-way electromagnetic directional valve (8) by valve block (15) internal oil passages respectively with the second oil outlet C and the
Three oil outlet D connection, two four-way electromagnetic reversing valves (7) pass through pump seat (14) internal oil passages and valve block (15) internal oil passages
It is connected to the first oil outlet B on hydraulic power unit valve block (15).
4. voluntarily the leakage of electricity drives scissor aerial work platform hydraulic power unit as claimed in claim 3, it is characterized in that: described three
The oil circuit that position four-way electromagnetic reversing valve (8) is connect with the second oil outlet C is equipped with the first damping hole (11).
5. voluntarily the leakage of electricity drives scissor aerial work platform hydraulic power unit as claimed in claim 3, it is characterized in that: described three
The oil circuit that position four-way electromagnetic reversing valve (8) is connect with third oil outlet D is equipped with the second damping hole (12).
6. voluntarily the leakage of electricity drives scissor aerial work platform hydraulic power unit as described in claim 1, it is characterized in that: described straight
Galvanic electricity machine (3) tail cover can be dismantled, and directly replace carbon brush for electric machine in maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822253462.0U CN209398654U (en) | 2018-12-29 | 2018-12-29 | Voluntarily the leakage of electricity drives scissor aerial work platform hydraulic power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822253462.0U CN209398654U (en) | 2018-12-29 | 2018-12-29 | Voluntarily the leakage of electricity drives scissor aerial work platform hydraulic power unit |
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|---|---|
| CN209398654U true CN209398654U (en) | 2019-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822253462.0U Active CN209398654U (en) | 2018-12-29 | 2018-12-29 | Voluntarily the leakage of electricity drives scissor aerial work platform hydraulic power unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901599A (en) * | 2021-01-26 | 2021-06-04 | 中车青岛四方机车车辆股份有限公司 | Hydraulic power unit, carriage lifting system and rail vehicle |
-
2018
- 2018-12-29 CN CN201822253462.0U patent/CN209398654U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901599A (en) * | 2021-01-26 | 2021-06-04 | 中车青岛四方机车车辆股份有限公司 | Hydraulic power unit, carriage lifting system and rail vehicle |
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