CN207795714U - A kind of lifting machine double pump power unit - Google Patents
A kind of lifting machine double pump power unit Download PDFInfo
- Publication number
- CN207795714U CN207795714U CN201721919073.6U CN201721919073U CN207795714U CN 207795714 U CN207795714 U CN 207795714U CN 201721919073 U CN201721919073 U CN 201721919073U CN 207795714 U CN207795714 U CN 207795714U
- Authority
- CN
- China
- Prior art keywords
- valve
- pump
- normally closed
- gear pump
- closed solenoid
- 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.)
- Expired - Fee Related
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model belongs to technical field of hydraulic, more particularly, to a kind of lifting machine double pump power unit.The driving motor and gear pump one, gear pump two are coaxially connected, and gear pump one, gear pump two are connect by strainer with fuel tank, and the liquid outlet of the gear pump one is connect with overflow valve one, check valve one respectively；The liquid outlet of the check valve one is connect with oil circuit mouth P1 and 2/2-way normally closed solenoid valve one respectively；The liquid outlet of the gear pump two is connect with check valve two, overflow valve two respectively, and the liquid outlet of check valve two is connect with oil circuit mouth P2 and 2/2-way normally closed solenoid valve two respectively；The 2/2-way normally closed solenoid valve one, 2/2-way normally closed solenoid valve two are connected to fuel tank with by pressure compensator.It controls an oil circuit respectively using working at the same time before and after duplex pump, and front and back two pump discharge is identical, it can be achieved that double pump works asynchronously, and ensures the stability of lifting force, avoiding independent hydraulically controlled pump from pushing leads to nonsynchronous problem.
Description
Technical field
The utility model belongs to technical field of hydraulic, more particularly, to a kind of lifting machine double pump power unit.
Background technology
Traditional lifting machine realizes the descending operation of lifting machine using generally working asynchronously using two sets of hydraulic systems, but
Be since two systems internal oil pressure is not necessarily completely the same, be easy to cause lifting machine lifting it is asynchronous, influence normal operating.
Utility model content
The purpose of this utility model is that it is in view of the drawbacks of the prior art and insufficient, a kind of simple in structure, design conjunction is provided
Reason, lifting machine easy to use double pump power unit, it controls an oil circuit respectively using being worked at the same time before and after duplex pump,
And front and back two pump discharge is identical, it can be achieved that double pump works asynchronously, and ensures the stability of lifting force, avoids independent hydraulically controlled pump from pushing and lead
Cause nonsynchronous problem.
To achieve the above object, the technical solution adopted in the utility model is：It includes driving motor, gear pump one, oil
Case, gear pump two, overflow valve one, check valve one, 2/2-way normally closed solenoid valve one, 2/2-way normally closed solenoid valve two, pressure
Compensator, check valve two, overflow valve two；The driving motor and gear pump one, gear pump two are coaxially connected, and gear pump
One, gear pump two is connect by strainer with fuel tank, the liquid outlet of the gear pump one respectively with overflow valve one, check valve one
Connection；The liquid outlet of the check valve one is connect with oil circuit mouth P1 and 2/2-way normally closed solenoid valve one respectively；The tooth
The liquid outlet of wheel pump two is connect with check valve two, overflow valve two respectively, the liquid outlet of check valve two respectively with oil circuit mouth P2 and
2/2-way normally closed solenoid valve two connects；The 2/2-way normally closed solenoid valve one, 2/2-way normally closed solenoid valve two with
It is connected to fuel tank by pressure compensator.
Preferably, the driving motor is connect with fuel tank by filtering valve plate, and overflow valve one, check valve one, two
Two logical normally closed solenoid valves one of position, 2/2-way normally closed solenoid valve two, pressure compensator, check valve two, overflow valve two are both connected to
Filter the outside of valve plate.
Preferably, both the gear pump one and gear pump two synchronous rotary, and it is identical to convey pump discharge.
With the above structure, the utility model has the beneficial effect that：A kind of lifting machine double pump described in the utility model
Power unit, it controls an oil circuit respectively using working at the same time before and after duplex pump, and front and back two pump discharge it is identical, it can be achieved that
Double pump works asynchronously, and ensures the stability of lifting force, and independent hydraulically controlled pump promotion is avoided to lead to nonsynchronous problem.The utility model
With the advantages that simple in structure, setting is reasonable, low manufacture cost.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the front view of the utility model.
Fig. 3 is the left view of Fig. 2 of the utility model.
Reference sign：
Driving motor 1, gear pump 1, fuel tank 3, filtering valve plate 4, gear pump 25, overflow valve 1, check valve one 7, two
Two logical normally closed solenoid valves 1 of position, 2/2-way normally closed solenoid valve 29, pressure compensator 10, check valve 2 11, overflow valve 2 12.
Specific implementation mode
Below in conjunction with the accompanying drawings, the utility model is further described.
Referring to as shown in Figure 1 and Figure 2, present embodiment adopts the following technical scheme that：It includes driving motor 1, gear
It is normally closed to pump one 2, fuel tank 3, gear pump 25, overflow valve 1, check valve 1,2/2-way normally closed solenoid valve 1,2/2-way
Solenoid valve 29, pressure compensator 10, check valve 2 11, overflow valve 2 12；The driving motor 1 and gear pump 1, gear
Pump 25 coaxially connected, and gear pump 1, gear pump 25 are connect by strainer with fuel tank 3, and the gear pump 1 goes out
Liquid mouth is connect with overflow valve 1, check valve 1 respectively；The liquid outlet of the check valve 1 respectively with oil circuit mouth P1 and two
Two logical normally closed solenoid valves 1 connect；The liquid outlet of the gear pump 25 connects with check valve 2 11, overflow valve 2 12 respectively
It connects, the liquid outlet of check valve 2 11 is connect with oil circuit mouth P2 and 2/2-way normally closed solenoid valve 29 respectively；The 2/2-way
Normally closed solenoid valve 1,2/2-way normally closed solenoid valve 29 are connected to fuel tank 3 with by pressure compensator 10.
Wherein, the driving motor 1 is connect with fuel tank 3 by filtering valve plate 4, and overflow valve 1, check valve one 7, two
Two logical normally closed solenoid valves 1 of position, 2/2-way normally closed solenoid valve 29, pressure compensator 10, check valve 2 11, overflow valve 2 12
It is both connected to the outside of filtering valve plate 4, in addition.Both the gear pump 1 and gear pump 25 synchronous rotary, and delivery pump
Flow is identical.
The working principle of this specific embodiment:：It drives both gear pump 1, gear pump 25 same by driving motor 1
Step rotation driving, conveys the hydraulic oil of same traffic, ensures that oil circuit mouth P1 and oil circuit mouth P2 export identical pressure, ensures oil cylinder
Driving synchronization.
With the above structure, present embodiment has the beneficial effect that：It before and after duplex pump using working at the same time, respectively
Control an oil circuit, and front and back two pump discharge it is identical, it can be achieved that double pump work asynchronously, ensure the stability of lifting force, avoid solely
Vertical hydraulic pump promotion leads to nonsynchronous problem.
The above is merely intended for describing the technical solutions of the present application, but not for limiting the present application, those of ordinary skill in the art couple
The other modifications or equivalent replacement that the technical solution of the utility model is made, without departing from technical solutions of the utility model
Spirit and scope should all cover in the right of the utility model.
Claims (3)
1. a kind of lifting machine double pump power unit, it is characterised in that：It includes driving motor (1), gear pump one (2), fuel tank
(3), gear pump two (5), overflow valve one (6), check valve one (7), 2/2-way normally closed solenoid valve one (8), 2/2-way are normally closed
Solenoid valve two (9), pressure compensator (10), check valve two (11), overflow valve two (12)；The driving motor (1) and gear
One (2) of pump, gear pump two (5) are coaxially connected, and gear pump one (2), gear pump two (5) are connect by strainer with fuel tank (3),
The liquid outlet of the gear pump one (2) is connect with overflow valve one (6), check valve one (7) respectively；The check valve one (7)
Liquid outlet connect respectively with oil circuit mouth P1 and 2/2-way normally closed solenoid valve one (8)；The liquid outlet of the gear pump two (5)
Connect respectively with check valve two (11), overflow valve two (12), the liquid outlet of check valve two (11) respectively with oil circuit mouth P2 and two
Two logical normally closed solenoid valves two (9) connect；The 2/2-way normally closed solenoid valve one (8), 2/2-way normally closed solenoid valve two (9)
Fuel tank (3) is connected to by pressure compensator (10).
2. a kind of lifting machine double pump power unit according to claim 1, it is characterised in that：The driving motor
(1) it is connect with fuel tank (3) by filtering valve plate (4), and overflow valve one (6), check valve one (7), 2/2-way normally closed solenoid valve
One (8), 2/2-way normally closed solenoid valve two (9), pressure compensator (10), check valve two (11), overflow valve two (12) are all connected with
In the outside of filtering valve plate (4).
3. a kind of lifting machine double pump power unit according to claim 1, it is characterised in that：The gear pump one
(2) with both gear pumps two (5) synchronous rotary, and it is identical to convey pump discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721919073.6U CN207795714U (en) | 2017-12-29 | 2017-12-29 | A kind of lifting machine double pump power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721919073.6U CN207795714U (en) | 2017-12-29 | 2017-12-29 | A kind of lifting machine double pump power unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207795714U true CN207795714U (en) | 2018-08-31 |
Family
ID=63277147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721919073.6U Expired - Fee Related CN207795714U (en) | 2017-12-29 | 2017-12-29 | A kind of lifting machine double pump power unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207795714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374761A (en) * | 2021-06-18 | 2021-09-10 | 苏州艾沃意特汽车设备有限公司 | Vehicle lifter hydraulic control system, control circuit and lifter |
-
2017
- 2017-12-29 CN CN201721919073.6U patent/CN207795714U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374761A (en) * | 2021-06-18 | 2021-09-10 | 苏州艾沃意特汽车设备有限公司 | Vehicle lifter hydraulic control system, control circuit and lifter |
| CN113374761B (en) * | 2021-06-18 | 2024-01-05 | 苏州艾沃意特汽车设备有限公司 | Hydraulic control system and control circuit of vehicle lifter and lifter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203113417U (en) | Univariate hydraulic system of loading machine | |
| CN102767207B (en) | Excavator boom energy regenerating device and boom energy regenerating valve block thereof | |
| CN207795714U (en) | A kind of lifting machine double pump power unit | |
| CN207064366U (en) | A kind of multi output hydraulic power station | |
| CN205063484U (en) | Fluid pressure type stereo garage liquid accuse system | |
| CN109052177A (en) | A kind of luffing jib stacker crane slewing hydraulic energy-saving system | |
| CN203384136U (en) | Speed exchange circuit with parallel speed control valves | |
| CN207795720U (en) | A kind of self-discharging trailer power unit | |
| CN206111706U (en) | Hydraulic power unit | |
| CN207660916U (en) | A kind of associated four cylinders system of hydraulic pressure car unloader Hydraulic Double | |
| CN208764008U (en) | Hydraulic system of chassis | |
| CN203717491U (en) | Double suction port hydraulic power unit for lifting platform | |
| CN202416433U (en) | Bucket rod speed reduction energy-saving system in hydraulic control positive flow system of excavator | |
| CN207795710U (en) | A kind of four road self-locking scissor platform power units | |
| CN205117853U (en) | Double pump work switched systems | |
| CN206917952U (en) | A kind of closed type hydraulic system of development machine | |
| CN203641137U (en) | Motor energy-saving system for open hydraulic system | |
| CN207176794U (en) | Hydraulic system and engineering machinery | |
| CN207795712U (en) | A kind of self-discharging trailer double acting power unit | |
| CN207795708U (en) | A kind of miniature Double-directional rotary power unit | |
| CN201874923U (en) | Electro-hydraulic actuator | |
| CN206770325U (en) | A kind of hydraulic oil supply system | |
| CN202281044U (en) | Pressure-stabilizing system for oil transmission pipeline | |
| CN201800214U (en) | External control loop of injection molding machine with servo system | |
| CN203614517U (en) | Hydraulic power unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20211229 |