CN102536800B - Steering gear pump - Google Patents
Steering gear pump Download PDFInfo
- Publication number
- CN102536800B CN102536800B CN201210029192.XA CN201210029192A CN102536800B CN 102536800 B CN102536800 B CN 102536800B CN 201210029192 A CN201210029192 A CN 201210029192A CN 102536800 B CN102536800 B CN 102536800B
- Authority
- CN
- China
- Prior art keywords
- driving gear
- pump
- transmission shaft
- bonnet
- gear
- 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
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- Details And Applications Of Rotary Liquid Pumps (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention relates to a steering gear pump, belongs to the technical field of steering gear pumps, and aims to provide a steering gear pump which ensures that redundant flow is refluxed to an oil tank instead of an oil inlet so as to prolong the service life of an oil pump. According to the technical scheme, a rear cover, a pump body, an intermediate and a front cover are arranged together in turn; a driving gear and a driven gear are arranged in the pump body and meshed with each other; a transmission shaft is sleeved in the front cover through a bearing; one end of the transmission shaft is connected with a central shaft of the driving gear, and the other end of the transmission shaft penetrates through the front cover and is connected with a transmission gear; a sliding valve is arranged between an oil inlet and an oil outlet of the rear cover; a throttle valve is arranged in the oil outlet through a thread; and an oil return port is also formed on the rear cover and communicated with an oil tank. The steering gear pump can be in a normal working temperature state all the time, and the service life is prolonged.
Description
Technical field
Steering gear pump of the present invention, belongs to steering gear pump technical field.
Background technique
Existing steering gear pump generally has two hydraulic fluid ports, a filler opening, an oil outlet.Oil pump is constant flow pump.For ensureing the constant current effect of oil pump, in the bonnet of oil pump, be designed with return opening, when flow is greater than demand, unnecessary flow directly will be back to filler opening from return opening, to reach the effect of constant current.This design deficiency is: medium-sized or Light-duty Vehicle can satisfy the demands, heavy goods vehicles demand huge discharge steering pump, the flow of oil pump only has half to export (sometimes not enough half), unnecessary flow savings are in oil pump, the heat produced can not normally distribute, cause the temperature hot soak condition of oil pump, affect the working life of oil pump.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, and technical problem to be solved is to provide a kind of unnecessary flow backflow fuel tank and filler opening that do not reflux of making, thus extends the steering gear pump in oil pump working life.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: steering gear pump, comprise: protecgulum, intermediate, the pump housing, bonnet, driving gear, driven gear, transmission shaft and driving gear, bonnet, the pump housing, intermediate and protecgulum are installed together successively, driving gear and driven gear are arranged on pump body and driving gear engages with driven gear, transmission shaft is contained in protecgulum by bearing housing, one end of transmission shaft is connected with the central shaft of driving gear, is connected after the other end of transmission shaft passes protecgulum with driving gear; Be provided with guiding valve between the filler opening of described bonnet and oil outlet, by screw thread, throttle valve is housed in oil outlet, bonnet is also provided with return opening, and described return opening is communicated with fuel tank;
Described throttle valve is a cylindrical body, and cylindrical center has through hole, and one end of described through hole is interior hexagonal structure, and cylindrical outer installment has outside thread.
Described guiding valve is by the through hole of thread set on bonnet, and the structure of guiding valve is: be connected by spring between spool with valve gap; Described filler opening is connected with oil outlet, realizes connected sum turn off between filler opening and return opening by the movement of spool.
The beneficial effect that the present invention compared with prior art has is: the present invention is by adding return opening, make unnecessary flow from becoming meeting fuel tank back into hydraulic fluid port, oil pump is changed into extracorporal circulatory system by body-internal-circulation, reduce shell temperature of the present invention, make the present invention be in normal operating temperature state, add working life.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of bonnet place of the present invention guiding valve.
In figure: 1 is protecgulum, 2 is intermediate, and 3 is the pump housing, and 4 is bonnet, and 5 is driving gear, and 6 is driven gear, and 7 is transmission shaft, and 8 is driving gear, and 9 is oil outlet, and 10 is guiding valve, and 11 is throttle valve, and 12 is return opening, and 13 is spool, and 14 is valve gap.
Embodiment
As shown in Figure 1 and Figure 2, steering gear pump of the present invention, comprise: protecgulum 1, intermediate 2, the pump housing 3, bonnet 4, driving gear 5, driven gear 6, transmission shaft 7 and driving gear 8, bonnet 4, the pump housing 3, intermediate 2 and protecgulum 1 are installed together successively, driving gear 5 and driven gear 6 are arranged on the pump housing 3 inside and driving gear 5 engages with driven gear 6, transmission shaft 7 is contained in protecgulum 1 by bearing housing, one end of transmission shaft 7 is connected with the central shaft of driving gear 5, is connected after the other end of transmission shaft 7 passes protecgulum 1 with driving gear 8; Be provided with guiding valve 10 between the filler opening of described bonnet 4 and oil outlet 9, by screw thread, throttle valve 11 is housed in oil outlet 9, bonnet 4 is also provided with return opening 12, and described return opening 12 is communicated with fuel tank;
Described throttle valve 11 is a cylindrical body, and cylindrical center has through hole, and one end of described through hole is interior hexagonal structure, and cylindrical outer installment has outside thread.
Described guiding valve 10 is by the through hole of thread set on bonnet 4, and the structure of guiding valve 10 is: be connected by spring between spool 13 with valve gap 14; Described filler opening is connected with oil outlet 9, realizes connected sum turn off between filler opening and return opening 12 by the movement of spool 13.
When the present invention works, owing to being provided with throttle valve 11 in oil outlet 9, so after reaching certain rotating speed, only provide the hydraulic oil of firm discharge from oil outlet 9, the spool 13 that unnecessary hydraulic oil promotes guiding valve 10 moves, filler opening is communicated with return opening 12, unnecessary hydraulic oil flows back to fuel tank from return opening, reaches the object of oil outlet 9 constant flow, and has taken away a part of heat, make the present invention be in normal operating temperature state, add working life.
Claims (1)
1. steering gear pump, comprise: protecgulum (1), intermediate (2), the pump housing (3), bonnet (4), driving gear (5), driven gear (6), transmission shaft (7) and driving gear (8), bonnet (4), the pump housing (3), intermediate (2) and protecgulum (1) are installed together successively, driving gear (5) and driven gear (6) are arranged on the pump housing (3) inside and driving gear (5) engages with driven gear (6), transmission shaft (7) is contained in protecgulum (1) by bearing housing, one end of transmission shaft (7) is connected with the central shaft of driving gear (5), the other end of transmission shaft (7) passes protecgulum (1) and is connected with driving gear (8) afterwards, it is characterized in that: between the filler opening of described bonnet (4) and oil outlet (9), be provided with guiding valve (10), by screw thread, throttle valve (11) is housed in oil outlet (9), bonnet (4) is also provided with return opening (12), described return opening (12) is communicated with fuel tank,
Described throttle valve (11) is a cylindrical body, and cylindrical center has through hole, and one end of described through hole is interior hexagonal structure, and cylindrical outer installment has outside thread;
Described guiding valve (10) is by the through hole of thread set on bonnet (4), and the structure of guiding valve (10) is: be connected by spring between spool (13) with valve gap (14); Described filler opening is connected with oil outlet (9), realizes connected sum turn off between filler opening and return opening (12) by the movement of spool (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210029192.XA CN102536800B (en) | 2012-02-10 | 2012-02-10 | Steering gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210029192.XA CN102536800B (en) | 2012-02-10 | 2012-02-10 | Steering gear pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102536800A CN102536800A (en) | 2012-07-04 |
| CN102536800B true CN102536800B (en) | 2015-06-17 |
Family
ID=46344551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210029192.XA Expired - Fee Related CN102536800B (en) | 2012-02-10 | 2012-02-10 | Steering gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102536800B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603801A (en) * | 2013-12-06 | 2014-02-26 | 湖南南方宇航高精传动有限公司 | Box gear pump |
| CN105351304A (en) * | 2015-12-15 | 2016-02-24 | 北奔重型汽车重庆有限公司 | High flow steering oil pump driving gear driving connection structure of wide-body mining dump truck |
| CN107237743A (en) * | 2017-06-16 | 2017-10-10 | 无锡市京锡冶金液压机电有限公司 | hydraulic pump cooling system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4644974A (en) * | 1980-09-08 | 1987-02-24 | Dowell Schlumberger Incorporated | Choke flow bean |
| CN2108794U (en) * | 1991-11-18 | 1992-07-01 | 四川石油管理局川中矿区 | Sulfur-resistant throttle |
| CN101004172A (en) * | 2006-12-29 | 2007-07-25 | 哈尔滨工业大学 | Gear pump with built in outer controlled overflow valve |
| CN201763599U (en) * | 2010-04-27 | 2011-03-16 | 泊姆克(天津)液压有限公司 | High-pressure gear pump |
| CN202031832U (en) * | 2011-05-03 | 2011-11-09 | 潍柴动力股份有限公司 | Steering gear pump |
| CN102242623A (en) * | 2011-07-08 | 2011-11-16 | 中国石油天然气股份有限公司 | Erosion resistant downhole choke for sour gas wells |
| CN202468300U (en) * | 2012-02-10 | 2012-10-03 | 长治液压有限公司 | Steering gear pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201221436Y (en) * | 2008-07-23 | 2009-04-15 | 合肥长源液压件有限责任公司 | Bidirectional gear motor integral seal structure |
-
2012
- 2012-02-10 CN CN201210029192.XA patent/CN102536800B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4644974A (en) * | 1980-09-08 | 1987-02-24 | Dowell Schlumberger Incorporated | Choke flow bean |
| CN2108794U (en) * | 1991-11-18 | 1992-07-01 | 四川石油管理局川中矿区 | Sulfur-resistant throttle |
| CN101004172A (en) * | 2006-12-29 | 2007-07-25 | 哈尔滨工业大学 | Gear pump with built in outer controlled overflow valve |
| CN201763599U (en) * | 2010-04-27 | 2011-03-16 | 泊姆克(天津)液压有限公司 | High-pressure gear pump |
| CN202031832U (en) * | 2011-05-03 | 2011-11-09 | 潍柴动力股份有限公司 | Steering gear pump |
| CN102242623A (en) * | 2011-07-08 | 2011-11-16 | 中国石油天然气股份有限公司 | Erosion resistant downhole choke for sour gas wells |
| CN202468300U (en) * | 2012-02-10 | 2012-10-03 | 长治液压有限公司 | Steering gear pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102536800A (en) | 2012-07-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| 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: 20150617 Termination date: 20200210 |