CN207715351U - A kind of hydraulic planger pump of a variety of Variable Control functions of band - Google Patents
A kind of hydraulic planger pump of a variety of Variable Control functions of band Download PDFInfo
- Publication number
- CN207715351U CN207715351U CN201721468907.6U CN201721468907U CN207715351U CN 207715351 U CN207715351 U CN 207715351U CN 201721468907 U CN201721468907 U CN 201721468907U CN 207715351 U CN207715351 U CN 207715351U
- Authority
- CN
- China
- Prior art keywords
- control valve
- pressure
- channel
- valve core
- piston
- 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
- 239000002828 fuel tank Substances 0.000 claims description 12
- 230000004807 localization Effects 0.000 claims description 3
- 238000001727 in vivo Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000005465 channeling Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
Abstract
The utility model discloses a kind of hydraulic planger pumps of a variety of Variable Control functions of band, include the pump housing, flow control valve, flow piston, Ioad-sensing control valve, constant power control valve and pressure cut off control valve are equipped in the pump housing, the inner passage of flow piston is communicated with the plunger shaft of bearing block assembly, and overhead is distinguished in power limitation control valve core, the piston of bearing block assembly in the both ends that L-shaped adjusts lever；The utility model can realize that such as Ioad-sensing control, power limitation control and pressure cut off control multiple functions simultaneously according to need of work, also it can realize single control function, while different power limitation control variable pressure points, pressure cut off control variable pressure point and Ioad-sensing control pressure difference etc. can also be set as needed.
Description
Technical field
The utility model is related to hydraulic planger pump fields, particularly belong to a kind of hydraulic plunger of a variety of Variable Control functions of band
Pump.
Background technology
Hydraulic pump is the dynamical element of hydraulic system, and effect is to convert mechanical energy into hydraulic energy, compared with other pumps,
With work efficiency is high, pressure is high, service life is long, flow-rate adjustment is convenient, the small feature of weight per unit power, therefore in machinery
Apparatus field is used widely.However in variable piston hydraulic pump body used at present, pump housing volume is big, and integrated level is low,
The needs that Modern hydraulic integrated system cannot be met cannot be combined effectively with modern servo variable displacement, and unidirectional oil inlet with it is fuel-displaced,
Not only working efficiency is low, is not met by the need of work of system.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic planger pump of a variety of Variable Control functions of band, can be according to work need
Such as Ioad-sensing control, power limitation control and pressure cut off control multiple functions are realized simultaneously, can also realize single control
Function, at the same can also be set as needed different power limitation control variable pressure points, pressure cut off control variable pressure point and
Ioad-sensing control pressure difference etc..
The technical solution adopted in the utility model is as follows：
A kind of hydraulic planger pump of a variety of Variable Control functions of band includes the pump housing, flow control valve, stream is equipped in the pump housing
Measure piston, Ioad-sensing control valve, constant power control valve and pressure cut off control valve, the inner passage of flow piston and bearing block
The plunger shaft of component communicates, and overhead is distinguished in the work of power limitation control valve core, bearing block assembly in the both ends that L-shaped adjusts lever
Plug；
When plunger pump work, the pressure oil Pp of pump housing outlet into the left end working chamber of inbound traffics piston, make flow piston to
It moves right, increases the discharge capacity of plunger pump, while pressure oil Pp acts on bearing block assembly by the inner passage of flow piston
Piston makes the upward active force of bearing block assembly output, and upward active force, which pushes, adjusts lever around fulcrum counterclockwise rotation, together
When push power limitation control valve core compressed spring x be moved to the left, while pressure oil Pp by channel a, channel b and channel c according to
The secondary working chamber for acting on constant power control valve, pressure cut off control valve working chamber and Ioad-sensing control valve working chamber,
Pressure oil Pp controls inner passage on the right side of valve core by pressure cut off and acts on spool right side, makes pressure cut off control valve valve
Core compressed spring z is moved to the left, and pressure oil Pp acts on spool right side by Ioad-sensing control valve core inner passage, makes
Ioad-sensing control valve core compressed spring y is moved to the left；
When pressure oil Pp controls valve core and Ioad-sensing control valve core by power limitation control valve core, pressure cut off
When the critical value of spool movement commutation is not achieved in the active force to the left generated, the right end working chamber of flow piston successively through channel d,
Channel e, channel f, channel g are connected with fuel tank, and the active force of flow piston left end is more than the active force of right end, makes plunger pump work
Make in huge discharge state；When pressure oil Pp pressure constantly increases, pressure oil Pp passes through active force to the left caused by each spool
Constantly increase and so that each spool compressed spring x, y, z is moved to the left, power limitation control valve core movement commutation after, pressure oil Pp according to
The secondary right end working chamber by channel a, channel f, channel e, the laggard inbound traffics pistons of channel d, and right end working chamber and fuel tank are not
Connection, makes flow piston generate active force to the left, and the right end working chamber of flow piston is more than the active area of left end working chamber, makes
Flow piston is moved to the left, and reduces the discharge capacity of plunger pump, while bearing block assembly is moved to the left simultaneously with flow piston, makes bearing
Holder assembly acts on the arm of force reduction for adjusting lever, and bearing block assembly acts on the torque adjusted on lever and reduces；
When power limitation control valve core is in the critical localisation opened and do not opened, bearing block assembly, which acts on, adjusts lever
Torque and power limitation control valve core, which act on, adjusts that the torque of lever is equal, and plunger pump is in the constant balance of pressure, discharge capacity
State, i.e. invariable power state；
When the pressure oil Pp pressure of outlet of plunger pump continues to increase, push pressure cut off control valve core compressed spring z to
It moves left, when reaching the critical pressure of pressure cut off control valve core movement commutation, pressure oil Pp passes sequentially through channel a, channel
B, channel e, channel d are into the right end working chamber of inbound traffics piston, while right end working chamber and fuel tank disconnect, and make flow piston to the left
It is mobile, reduce the discharge capacity of plunger pump；
When the pressure oil Pp pressure of outlet of plunger pump continues to increase, Ioad-sensing control valve core compressed spring y is pushed, and
Overcome spring cavity to be under pressure simultaneously active force to the right that signal Pls is generated and be moved to the left, reach Ioad-sensing control valve valve
Core commutation critical pressure when, pressure oil Pp pass sequentially through channel a, channel b, channel c, channel d into inbound traffics piston right end
Working chamber, while right end working chamber is disconnected with fuel tank, and flow piston is made to be moved to the left, and reduces the discharge capacity of plunger pump, while permanent work(
The spring cavity of rate control valve is under pressure the active force to the right that signal Pi is generated, to adjust power limitation control valve core or so shifting
It is dynamic.
When the pressure oil Pp pressure of outlet of plunger pump continues to increase, the discharge capacity of plunger pump, which is progressively smaller until, reaches another
Until kind equilibrium state.
The utility model can realize such as Ioad-sensing control, power limitation control and pressure cut off control simultaneously according to need of work
The multiple functions such as system, can also realize single control function, while different power limitation control variable pressures can also be set as needed
Force, pressure cut off control variable pressure point and Ioad-sensing control pressure difference etc..
Description of the drawings
Fig. 1 is the utility model mechanical structure schematic diagram.
Fig. 2 is the hydraulic schematic diagram of the utility model.
Fig. 3 is the pressure cut off control valve variable characteristics curve graph of the utility model.
Fig. 4 is the Ioad-sensing control valve variable characteristics curve graph of the utility model.
Fig. 5 is the constant power control valve variable characteristics curve graph of the utility model.
Specific implementation mode
Referring to attached drawing, a kind of hydraulic planger pump of a variety of Variable Control functions of band includes the pump housing 1, flow control valve 4,
Flow piston 8, Ioad-sensing control valve 5, constant power control valve 2 and pressure cut off control valve 3, flow piston 8 are equipped in the pump housing 1
Inner passage communicated with the plunger shaft of bearing block assembly 7, L-shaped adjust lever 6 both ends distinguish overhead in constant power control valve 2
The piston of spool, bearing block assembly 7；
When plunger pump work, the pressure oil Pp that the pump housing 1 exports makes flow piston 8 into the left end working chamber of inbound traffics piston 8
It moves right, increases the discharge capacity of plunger pump, while pressure oil Pp acts on bearing block assembly by the inner passage of flow piston 8
7 piston makes the upward active force of 7 output of bearing block assembly, and upward active force, which pushes, adjusts lever 6 around fulcrum counterclockwise rotation
Turn, while 2 spool compressed spring x of constant power control valve being pushed to be moved to the left, while pressure oil Pp by channel a, channel b and leads to
Road c acts on the working chamber of constant power control valve 2, the working chamber of pressure cut off control valve 3 and Ioad-sensing control valve 5 successively
Working chamber, pressure oil Pp act on spool right side by inner passage on the right side of 3 spool of pressure cut off control valve, make pressure cut off
3 spool compressed spring z of control valve is moved to the left, and pressure oil Pp is by 5 valve core inside channeling of Ioad-sensing control valve in valve
Core right side makes 5 spool compressed spring y of Ioad-sensing control valve be moved to the left；
When pressure oil Pp passes through 2 spool of constant power control valve, 3 spool of pressure cut off control valve and Ioad-sensing control valve 5
When the critical value of spool movement commutation is not achieved in the active force to the left that spool generates, the right end working chamber of flow piston 8 passes through successively
Channel d, channel e, channel f, channel g are connected with fuel tank, and the active force of 8 left end of flow piston is more than the active force of right end, makes
Plunger pump is operated in huge discharge state；When pressure oil Pp pressure constantly increases, pressure oil Pp by caused by each spool to
Left active force constantly increases and each spool compressed spring x, y, z is made to be moved to the left, after the movement commutation of 2 spool of constant power control valve,
Pressure oil Pp passes sequentially through the right end working chamber of the laggard inbound traffics piston of channel a, channel f, channel e, channel d 8, and right end works
Chamber is not connected to fuel tank, and flow piston 8 is made to generate active force to the left, and the right end working chamber of flow piston 8 is more than left end working chamber
Active area, so that flow piston 8 is moved to the left, reduce the discharge capacity of plunger pump, while bearing block assembly 7 and flow piston 8 are same
When be moved to the left, make bearing block assembly 7 act on adjust lever the arm of force reduce, bearing block assembly 7 act on adjust lever 6 on
Torque reduce；
When 2 spool of constant power control valve is in the critical localisation opened and do not opened, bearing block assembly 7 acts on adjusting lever
6 torque and 2 spool of constant power control valve, which act on, adjusts that the torque of lever 6 is equal, and it is constant that plunger pump is in pressure, discharge capacity
Equilibrium state, i.e. invariable power state；
When the pressure oil Pp pressure of outlet of plunger pump continues to increase, push 3 spool compressed spring of pressure cut off control valve to
It moves left, when reaching the critical pressure of 3 spool of pressure cut off control valve movement commutation, pressure oil Pp passes sequentially through channel a, channel
B, channel e, channel d are into the right end working chamber of inbound traffics piston 8, while right end working chamber and fuel tank disconnect, make flow piston 8 to
It moves left, reduces the discharge capacity of plunger pump；
When the pressure oil Pp pressure of outlet of plunger pump continues to increase, 5 spool compressed spring y of Ioad-sensing control valve is pushed,
And overcome spring y chambers to be under pressure simultaneously active force to the right that signal Pls is generated and be moved to the left, reach Ioad-sensing control valve
When the critical pressure of 5 spools commutation, pressure oil Pp passes sequentially through channel a, channel b, channel c, channel d into inbound traffics piston 8
Right end working chamber, while right end working chamber is disconnected with fuel tank, so that flow piston 8 is moved to the left, is reduced the discharge capacity of plunger pump, simultaneously
The spring cavity of constant power control valve 2 is under pressure the active force to the right that signal Pi is generated, left to adjust 2 spool of constant power control valve
It moves right；
When the pressure oil Pp pressure of outlet of plunger pump continues to increase, the discharge capacity of plunger pump, which is progressively smaller until, reaches another
Until kind equilibrium state.
Claims (2)
1. a kind of hydraulic planger pump of a variety of Variable Control functions of band, includes the pump housing, flow control valve, which is characterized in that pump
It is equipped with flow piston, Ioad-sensing control valve, constant power control valve and pressure cut off control valve in vivo, the inside of flow piston is logical
Road is communicated with the plunger shaft of bearing block assembly, and overhead is distinguished in power limitation control valve core, bearing block in the both ends that L-shaped adjusts lever
The piston of component；
Plunger pump is in running order, the pressure oil Pp of pump housing outlet into inbound traffics piston left end working chamber, flow piston to
It moves right, the discharge capacity of plunger pump increases, while pressure oil Pp acts on bearing block assembly by the inner passage of flow piston
Piston, the upward active force of bearing block assembly output, upward active force, which pushes, adjusts lever around fulcrum counterclockwise rotation, and pushes away
Dynamic power limitation control valve core compressed spring x is moved to the left, and pressure oil Pp is acted on successively by channel a, channel b and channel c
The working chamber of the working chamber of constant power control valve, the working chamber and Ioad-sensing control valve of pressure cut off control valve, pressure oil Pp
Inner passage on the right side of valve core is controlled by pressure cut off and acts on spool right side, and pressure cut off controls valve core compressed spring
Z is moved to the left, and pressure oil Pp acts on spool right side, Ioad-sensing control by Ioad-sensing control valve core inner passage
Valve core compressed spring y is moved to the left；
Pressure oil Pp is generated by power limitation control valve core, pressure cut off control valve core and Ioad-sensing control valve core
Active force to the left, active force is less than the critical value of spool movement commutation to the left, and the right end working chamber of flow piston is successively through channel
D, channel e, channel f, channel g are connected with fuel tank, and the active force of flow piston left end is more than the active force of right end, plunger pump work
Make in huge discharge state；Pressure oil Pp pressure constantly increases, and pressure oil Pp is by the way that active force is continuous to the left caused by each spool
Increase, active force pushes each spool compressed spring x, y, z to be moved to the left to the left, the movement commutation of power limitation control valve core, pressure
Oily Pp passes sequentially through the right end working chamber of the laggard inbound traffics piston of channel a, channel f, channel e, channel d, and right end working chamber with
Fuel tank is not connected to, and flow piston generates active force to the left, and the right end working chamber of flow piston is more than the acting surface of left end working chamber
Product, flow piston are moved to the left, and the discharge capacity of plunger pump reduces, while bearing block assembly is moved to the left simultaneously with flow piston, axis
Bearing component acts on the arm of force reduction for adjusting lever, and bearing block assembly acts on the torque adjusted on lever and reduces；
Power limitation control valve core is in the critical localisation opened and do not opened, and bearing block assembly acts on the torque and perseverance for adjusting lever
The torque that power control valve core acts on adjusting lever is equal, and plunger pump is in the constant equilibrium state of pressure, discharge capacity, i.e., permanent
Power rating；
The pressure oil Pp pressure of outlet of plunger pump continues to increase, and pressure cut off control valve core compressed spring z is pushed to be moved to the left,
Reach the critical pressure of pressure cut off control valve core movement commutation, pressure oil Pp passes sequentially through channel a, channel b, channel e, leads to
Road d is into the right end working chamber of inbound traffics piston, while right end working chamber and fuel tank disconnect, and flow piston is moved to the left, plunger pump
Discharge capacity reduce；
The pressure oil Pp pressure of outlet of plunger pump continues to increase, and pushes Ioad-sensing control valve core compressed spring y, and overcome bullet
The spring chamber active force to the right that signal Pls is generated that is under pressure is moved to the left, and reaches the critical of Ioad-sensing control valve core commutation
Pressure, pressure oil Pp pass sequentially through channel a, channel b, channel c, channel d into the right end working chamber of inbound traffics piston, while right end
Working chamber and fuel tank disconnect, and flow piston is moved to the left, and the discharge capacity of plunger pump reduces, and the spring cavity of constant power control valve by
The active force to the right that pressure signal P i is generated adjusts power limitation control valve core and moves left and right.
2. the hydraulic planger pump according to claim 1 with a variety of Variable Control functions, which is characterized in that outlet of plunger pump
Pressure oil Pp pressure continues to increase, and the discharge capacity of plunger pump is progressively smaller until until reaching another equilibrium state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721468907.6U CN207715351U (en) | 2017-11-07 | 2017-11-07 | A kind of hydraulic planger pump of a variety of Variable Control functions of band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721468907.6U CN207715351U (en) | 2017-11-07 | 2017-11-07 | A kind of hydraulic planger pump of a variety of Variable Control functions of band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207715351U true CN207715351U (en) | 2018-08-10 |
Family
ID=63061181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721468907.6U Expired - Fee Related CN207715351U (en) | 2017-11-07 | 2017-11-07 | A kind of hydraulic planger pump of a variety of Variable Control functions of band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207715351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664118A (en) * | 2017-11-07 | 2018-02-06 | 安徽博流体传动股份有限公司 | A kind of hydraulic planger pump of a variety of Variable Control functions of band |
-
2017
- 2017-11-07 CN CN201721468907.6U patent/CN207715351U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664118A (en) * | 2017-11-07 | 2018-02-06 | 安徽博流体传动股份有限公司 | A kind of hydraulic planger pump of a variety of Variable Control functions of band |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2016343379B2 (en) | Constant power regulation system for duplex axial plunger pump and applications thereof | |
| CN107664118A (en) | A kind of hydraulic planger pump of a variety of Variable Control functions of band | |
| CN103615365B (en) | A kind of integrated valve type gas drive liquid suction booster | |
| US20190145397A1 (en) | Diaphram pumps with air savings devices | |
| CN108894847B (en) | Control system of direct-push type single-cavity supercharging variable-discharge oil pump | |
| CN202053557U (en) | Hydraulic system of small and medium size hydraulic press | |
| CN207715351U (en) | A kind of hydraulic planger pump of a variety of Variable Control functions of band | |
| CN106762926B (en) | The electrohydraulic controlling mechanism of pressure-adjustable and off-load | |
| CN205779974U (en) | A kind of novel electro-hydraulic proportional multi-way valve | |
| CN203532367U (en) | Multi-gear power control variable displacement piston pump | |
| CN110145502B (en) | Combined piston type energy accumulator with small pressure fluctuation | |
| CN102410275A (en) | Valve-control-free self-flow-distribution gas and liquid combined acting impactor | |
| CN210461224U (en) | Thread cartridge type pilot pressure-reducing secondary overflow valve | |
| CN203430757U (en) | Constant pressure digital variable pump | |
| CN205014009U (en) | Two step change discharge capacity oil pump of machinery valve accuse | |
| CN104358681A (en) | Variable displacement triple plunger super-pressure pump | |
| CN112283185B (en) | Hydraulic equipment, hydraulic system and plunger pump control device | |
| CN206054293U (en) | A kind of vane pump system | |
| CN103511369A (en) | Multi-gear power control variable piston pump | |
| CN204186569U (en) | A kind of Variable quantity three plunger superpressure pump | |
| CN105156378B (en) | Variable control device of hydraulic pump and control method thereof | |
| CN204851560U (en) | Positive flow control electric proportional pump | |
| CN204328433U (en) | Displacement-variable oil pump control loop | |
| CN112343806B (en) | Electric displacement control for open circuit variable displacement pump | |
| CN208040680U (en) | A kind of electric-controlled hydraulic plunger pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180810 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |