CN107255090A - A kind of control pressurer system of external enclosed pump - Google Patents
A kind of control pressurer system of external enclosed pump Download PDFInfo
- Publication number
- CN107255090A CN107255090A CN201710610188.5A CN201710610188A CN107255090A CN 107255090 A CN107255090 A CN 107255090A CN 201710610188 A CN201710610188 A CN 201710610188A CN 107255090 A CN107255090 A CN 107255090A
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- China
- Prior art keywords
- valve
- hydraulic
- control
- pressure
- closed type
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of control pressurer system of external enclosed pump, it includes hydraulic pilot handle, closed type hydraulic pump, hydraulic motor, the first hydraulic damping, pressure valve, balanced valve, check valve and fuel tank, overflow valve is integrated with the closed type hydraulic pump, wherein：The control port of the hydraulic pilot handle is connected with carrying out an oil-control mouthful for pressure cut off control, the import of the first hydraulic damping the need for the closed type hydraulic pump respectively, another oil-control mouth, the balanced valve pressure-bearing mouth of the outlet of first hydraulic damping respectively with the closed type hydraulic pump are connected, and two oil-outs of the closed type hydraulic pump are connected with two actuator ports of the hydraulic motor；The oil inlet of the pressure valve is connected with carrying out the actuator port of pressure cut off control the need for the closed type hydraulic pump, and the pilot control opening exported respectively with the balanced valve of the pressure valve, the fuel tank are connected；The outlet of the balanced valve is connected to the fuel tank after the check valve.The present invention can reduce closed type hydraulic pump excess flow automatically, so that power loss when reducing overflow valve overflow, prevents hydraulic system from occurring heated failure of removal.
Description
Technical field
Field, more particularly to a kind of Stress control system of external enclosed pump are manufactured the present invention relates to horizontal directional drilling machine
System.
Background technology
Closed type hydraulic system has the advantages that integrated level height, compact conformation, and it has obtained extensively should in engineering machinery field
With.Fig. 1 is it illustrates a kind of closed type hydraulic system of the prior art, as shown in figure 1, it includes the guide connected by pipeline
Overflow valve 103 is integrated with handle 101, closed type hydraulic pump 102, hydraulic motor 104, the closed type hydraulic pump 102.Its is worked
Journey is as follows：Pilot handle 101 is opened, closed type hydraulic pump 102 is obtained after the pressure controling signal of pilot handle 101, to hydraulic pressure horse
Export hydraulic oils to drive hydraulic motor 104 to act up to 104.When system pressure reaches overflow valve 103 in closed type hydraulic pump 102
During setting value, the overflow of overflow valve 103 is to protect hydraulic system maximum pressure no longer to raise so as to protecting hydraulic system.
There is following defect in closed type hydraulic system of the prior art：It is big that hydraulic system pressure limitation is completely dependent on overflow valve
What flow overflow was realized so that power loss is very big during the overflow of overflow valve, heating is serious, and hydraulic system mistake is most caused at last
Hot high temperature failure.
The content of the invention
In order to solve the above technical problems, the present invention proposes a kind of control pressurer system of external enclosed pump, its technology
Scheme is as follows：
A kind of control pressurer system of external enclosed pump, it includes hydraulic pilot handle, closed type hydraulic pump, hydraulic pressure horse
Reach, the first hydraulic damping, pressure valve, balanced valve, check valve and fuel tank, be integrated with overflow valve in the closed type hydraulic pump, wherein：
The oil-control of the control port of the hydraulic pilot handle respectively with progress pressure cut off control the need for the closed type hydraulic pump
Mouth, the import connection of the first hydraulic damping, another control exported respectively with the closed type hydraulic pump of first hydraulic damping
Hydraulic fluid port, balanced valve pressure-bearing mouthful connection, two oil-outs of the closed type hydraulic pump are connected with two actuator ports of the hydraulic motor；
The oil inlet of the pressure valve is connected with carrying out the actuator port of pressure cut off control the need for the closed type hydraulic pump, the pressure
The oil-out of power valve pilot control opening respectively with the balanced valve, the fuel tank are connected；The oil-out of the balanced valve is through institute
State and the fuel tank is connected to after check valve.
In a specific embodiment, the second hydraulic damping is provided between the oil-out of the pressure valve and the fuel tank,
The oil-out of the pressure valve, the import of the second hydraulic damping and the pilot control opening of the balanced valve hinder provided with the 3rd hydraulic pressure
Buddhist nun.
Compared with prior art, the control pressurer system of external enclosed pump proposed by the present invention, it is provided with pressure and cut
Disconnected control structure, its system pressure will close to or up relief valve set pressure before can Closed Hydraulic discharge capacity automatically, from
And the excess flow of overflow valve is reduced, power loss during reduction overflow valve overflow reduces Hydraulic System Fever, final realization pair
The heat management and control of a whole set of hydraulic system, prevents hydraulic system from occurring the failure of Prevention of Hydraulic System Overheating high temperature failure.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needing to make described in embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill of field, on the premise of not paying creative work, it can also obtain other according to these accompanying drawings
Accompanying drawing.Wherein：
Fig. 1 is the structural representation of enclosed pump liquid pressure control system of the prior art；
Fig. 2 is the structural representation of the control pressurer system of the external enclosed pump of the present invention.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
As shown in Fig. 2 the control pressurer system of external enclosed pump that the present invention is provided include hydraulic pilot handle 201,
Closed type hydraulic pump 202, hydraulic motor 204, the first hydraulic damping 211, pressure valve 207, balanced valve 208, check valve 209 and fuel tank
210, overflow valve 203 is integrated with the closed type hydraulic pump 202, wherein：
The control port of the hydraulic pilot handle 201 is cut with carrying out pressure the need for the closed type hydraulic pump 202 respectively
An oil-control mouthful for disconnected control, the import connection of the first hydraulic damping 211, the outlet of first hydraulic damping 211 respectively with institute
State another oil-control mouthful, the pressure-bearing mouthful connection of balanced valve 208 of closed type hydraulic pump 202, two oil-outs of the closed type hydraulic pump 202 with
The two actuator ports connection of the hydraulic motor 204；The need of the oil inlet of the pressure valve 207 and the closed type hydraulic pump 202
Carry out the actuator port connection of pressure cut off control, the elder generation of the oil-out of the pressure valve 207 respectively with the balanced valve 208
Control mouth, the fuel tank 210 is led to connect；The oil-out of the balanced valve 208 is connected to the fuel tank after the check valve 209
210。
In a specific embodiment, the second hydraulic pressure is provided between the oil-out and the fuel tank 210 of the pressure valve 207
Damping 206, the oil-out of the pressure valve 207, the import of the second hydraulic damping 206 and the pilot control of the balanced valve 208
Mouth is provided with the 3rd hydraulic damping 205.
The operation principle of the control pressurer system for the external enclosed pump that the present invention is provided is as follows：
Hydraulic pilot handle 201 is operated, pilot pressure oil enters closed type hydraulic pump 202 by the first hydraulic damping 211
In control chamber, closed type hydraulic pump 202 is obtained after the control signal of pilot handle 201, and pressure oil output to hydraulic motor 204 is with drive
Hydrodynamic pressure motor 204 is acted.
When the load increase on hydraulic motor 204, hydraulic system pressure rises, when hydraulic system pressure rises to pressure
(setup pressure value of pressure valve 207 is less than the pressure set points of the overflow valve 203), institute during the pressure set points of valve 207
State pressure valve 207 to open, now the partial pressure oil in closed type hydraulic pump 202 sequentially passes through the pressure valve 207, described second
Hydraulic damping 206 flow to the fuel tank 210.
Meanwhile, the pressure signal of the entrance of the second hydraulic damping 206 reaches the balanced valve through the 3rd hydraulic damping 205
208 pilot control opening, the balanced valve 208 is opened.Now, the pilot pressure of the oil-control mouthful of the closed type hydraulic pump 202
Oil branches to the fuel tank 210 through the balanced valve 208, the check valve 209, now, pilot pressure reduction, the enclosed liquid
The discharge capacity of press pump 202 reduces.
When hydraulic system pressure continues to rise and reaches the pressure set points of the overflow valve 203, the overflow valve 203
Start overflow.
It can be seen that, the discharge capacity of the hydraulic pump 202 is subtracted before the overflow valve 203 of hydraulic system starts overflow
It is small so that the spillway discharge of overflow valve 203 reduction, the power loss of the overflow valve 203 is reduced, so as to be prevented effectively from hydraulic pressure system
System heating is excessive, so as to extend the service life of hydraulic system.
The description with certain particularity detailed enough has been carried out to the present invention above.Ordinary skill in art
Personnel are it should be understood that what the description in embodiment was merely exemplary, before without departing from true spirit and scope of the present invention
Put make it is all change should all belong to protection scope of the present invention.Scope of the present invention is by described power
What sharp claim was defined, rather than limited by the foregoing description in embodiment.
Claims (2)
1. a kind of control pressurer system of external enclosed pump, it is characterised in that：It includes hydraulic pilot handle (201), enclosed
Hydraulic pump (202), hydraulic motor (204), the first damping hole (211), pressure valve (207), balanced valve (208), check valve (209)
And fuel tank (210), the closed type hydraulic pump (202) is interior to be integrated with overflow valve (203), wherein：
The control port of the hydraulic pilot handle (201) is cut with carrying out pressure the need for the closed type hydraulic pump (202) respectively
An oil-control mouthful for disconnected control, the import connection of the first hydraulic damping (211), the outlet difference of first hydraulic damping (211)
Another oil-control mouthful, balanced valve (208) pressure-bearing mouthful with the closed type hydraulic pump (202) are connected, the closed type hydraulic pump (202)
Two oil-outs are connected with two actuator ports of the hydraulic motor (204)；The oil inlet of the pressure valve (207) and the enclosed
Carry out the actuator port connection of pressure cut off control the need for hydraulic pump (202), the oil-out of the pressure valve (207) respectively with
The pilot control opening of the balanced valve (208), the fuel tank (210) connection；The oil-out of the balanced valve (208) is through the list
The fuel tank (210) is connected to after to valve (209).
2. the control pressurer system of external enclosed pump as claimed in claim 1, it is characterised in that：The pressure valve (207)
Oil-out and the fuel tank (210) between be provided with the second hydraulic damping (206), the oil-out of the pressure valve (207), second
The import of hydraulic damping (206) is provided with the 3rd hydraulic damping (205) with the pilot control opening of the balanced valve (208).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710610188.5A CN107255090B (en) | 2017-07-25 | 2017-07-25 | Pressure control system of external closed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710610188.5A CN107255090B (en) | 2017-07-25 | 2017-07-25 | Pressure control system of external closed pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107255090A true CN107255090A (en) | 2017-10-17 |
| CN107255090B CN107255090B (en) | 2023-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710610188.5A Active CN107255090B (en) | 2017-07-25 | 2017-07-25 | Pressure control system of external closed pump |
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| CN (1) | CN107255090B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11263589A (en) * | 1998-03-16 | 1999-09-28 | Tadano Ltd | Crane with roughing jib |
| CN201621134U (en) * | 2010-01-08 | 2010-11-03 | 徐工集团工程机械股份有限公司科技分公司 | Electric control hydraulic automatic deloading device of loading machine |
| CN103316799A (en) * | 2013-05-07 | 2013-09-25 | 艾迪士径向钻井（烟台）有限公司 | High-pressure water conservancy injection system |
| CN104791310A (en) * | 2015-02-06 | 2015-07-22 | 湘潭大学 | Flow recycling energy-saving type segment erector horizontal movement hydraulic control system |
| CN207315754U (en) * | 2017-07-25 | 2018-05-04 | 江苏谷登工程机械装备有限公司 | A kind of control pressurer system of external enclosed pump |
-
2017
- 2017-07-25 CN CN201710610188.5A patent/CN107255090B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11263589A (en) * | 1998-03-16 | 1999-09-28 | Tadano Ltd | Crane with roughing jib |
| CN201621134U (en) * | 2010-01-08 | 2010-11-03 | 徐工集团工程机械股份有限公司科技分公司 | Electric control hydraulic automatic deloading device of loading machine |
| CN103316799A (en) * | 2013-05-07 | 2013-09-25 | 艾迪士径向钻井（烟台）有限公司 | High-pressure water conservancy injection system |
| CN104791310A (en) * | 2015-02-06 | 2015-07-22 | 湘潭大学 | Flow recycling energy-saving type segment erector horizontal movement hydraulic control system |
| CN207315754U (en) * | 2017-07-25 | 2018-05-04 | 江苏谷登工程机械装备有限公司 | A kind of control pressurer system of external enclosed pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107255090B (en) | 2023-08-29 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20230721 Address after: 224100 south of Weisan Road, Dafeng Development Zone, Yancheng City, Jiangsu Province Applicant after: Jiangsu Gudeng Heavy Machinery Technology Co.,Ltd. Address before: 224100 north side of Jianshe West Road, Dafeng Industrial Park, Changzhou high tech Zone, Dafeng District, Yancheng City, Jiangsu Province Applicant before: JIANGSU GOODENG ENGINEERING MACHINERY ASSEMBLING Co.,Ltd. |
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