CN202031832U - Steering gear pump - Google Patents
Steering gear pump Download PDFInfo
- Publication number
- CN202031832U CN202031832U CN2011201356814U CN201120135681U CN202031832U CN 202031832 U CN202031832 U CN 202031832U CN 2011201356814 U CN2011201356814 U CN 2011201356814U CN 201120135681 U CN201120135681 U CN 201120135681U CN 202031832 U CN202031832 U CN 202031832U
- Authority
- CN
- China
- Prior art keywords
- oil
- steering gear
- gear pump
- pump
- control valve
- 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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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses a steering gear pump which comprises a pump body, wherein two mutually meshed gears are connected with the interior of the pump body, the front part of the pump body is provided with an oil inlet, a rear cover is installed at the rear end of the pump body, a control valve and an oil outlet are installed in the rear cover, an oil return port is arranged on the end surface of the rear cover, and the oil return port is communicated with an overflow hole of the control valve. The steering gear pump drives hydraulic oil to perform outer circulation, greatly reduces the temperature of the hydraulic oil and keeps the motion viscosity of hydraulic oil stable; in addition, internal parts of the steering gear pump are not easy to abrade at high temperature, and the service life of the steering gear pump is prolonged.
Description
Technical field
The utility model relates to a kind of steering gear pump.
Background technique
At present, mining vehicle-mounted gross ton position is big, and operation road slope road is many, turning is many, road conditions are poor, and motion speed is low, and the working environment dust fills the air, and such operating mode has proposed high requirement to the hydraulic power steering system of vehicle.Existing hydraulic power steering system adopts the steering gear pump usually, existing steering gear pump comprises the pump housing and is installed in bonnet on the pump housing, pump housing inner chamber is rotatably connected to pitch wheel, the pump housing is provided with filler opening, control valve and oil outlet are housed in the bonnet, low-pressure cavity UNICOM in the filler opening and the pump housing, oil outlet and pump housing inner high voltage chamber UNICOM, the overflow hole of control valve and oil pump oil suction chamber UNICOM, be that the gear pump internal structure adopts hydraulic oil inner circulation type structure, unnecessary hydraulic oil liquid enters the oil pump oil suction chamber by the overflow hole overflow of control valve, and when the high rotating speed of vehicle, hydraulic oil is very fast from the velocity ratio of flow-off overflow, cause the temperature rise of hydraulic power steering system oil too fast, the temperature of whole system is higher, mainly is because the oil pump overflow produces idle work, changes into heat, long-time inner loop causes oil liquid temperature too high, the too high kinematical viscosity of fluid that causes of oil temperature sharply reduces, and oil pump inner body wearing and tearing aggravation causes reduce greatly the working life of steering gear pump.
The model utility content
The technical problems to be solved in the utility model provides a kind of steering gear pump, uses this steering gear pump, and the oil temperature can reduce, and prolongs oil pump life.
For solving the problems of the technologies described above, the steering gear pump that is provided comprises the pump housing, be rotatably connected to two gears that are meshed in the pump housing, the pump housing is provided with filler opening, bonnet is equipped with in pump housing rear end, control valve and oil outlet are housed in the bonnet, and its structural feature is: the end face of described bonnet is provided with return opening, the overflow hole UNICOM of return opening and control valve.
After adopting said structure, hydraulic oil is in filler opening enters the pump housing, carry and pass through the mobile realization flow of control valve through the power of two gears, pressure control, discharge from oil outlet, unnecessary hydraulic oil can overflow from the overflow hole of control valve, return by return opening, be that unnecessary hydraulic oil is no longer in pump housing inner loop, but be back in the oil tank from the return opening discharge, thereby make the hydraulic oil outer circulation, reduce the temperature of hydraulic oil and oil pump greatly, it is stable that the kinematical viscosity of fluid keeps, be difficult for loss steering gear pump inner body, prolong the working life of steering gear pump.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is a structural representation of the present utility model;
The schematic representation of Fig. 2 for analysing and observe along the A-A line among Fig. 1;
Fig. 3 is for turning to the principle schematic of gear pump in the prior art;
Fig. 4 is a principle schematic of the present utility model.
Embodiment
Steering gear pump as depicted in figs. 1 and 2, it comprises the pump housing 1, be rotatably connected to two gears 2 that are meshed in the pump housing 1, wherein a gear 2 is circumscribed with power gear 12 by power transmission shaft 11, power gear 12 can be connected with power plant by gear, the pump housing 1 front portion is provided with filler opening 3, the low-pressure cavity UNICOM at filler opening 3 and gear 2 places, bonnet 7 is equipped with in the pump housing 1 rear end, control valve 8 and oil outlet 4 are housed in the bonnet 7, this control valve 8 is realized flow and pressure control, and its structure is a prior art, does not repeat them here, oil outlet 4 and pump housing inner high voltage chamber UNICOM, be the oil outlet UNICOM of oil outlet 4 by damping hole and throttle orifice and control valve 8, the end face of bonnet 7 is provided with return opening 5, overflow hole 10 UNICOMs of return opening 5 and control valve 8.
Steering gear pump of the prior art as shown in Figure 3, arrow shown in the figure is the flow direction of hydraulic oil, and machine oil enters this steering gear pump from oil tank 13, promptly enters the low-pressure cavity of gear pump from filler opening 3, power through gear is carried, again in oil outlet approach axis machine; Under the effect of control valve, unnecessary hydraulic oil turns back to the low-pressure cavity of gear pump again through the overflow hole of control valve, thereby carry out inner loop, damping produces idle work, change into heat, long-time inner loop causes oil liquid temperature too high, and the too high kinematical viscosity of fluid that causes of oil temperature sharply reduces, oil pump inner body wearing and tearing aggravation causes reduce greatly the working life of steering gear pump.
Principle of the present utility model as shown in Figure 4, arrow shown in the figure is the flow direction of hydraulic oil, and hydraulic oil enters this steering gear pump from oil tank 13, promptly enters gear 2 place low-pressure cavity from filler opening, power through gear 2 is carried, again in oil outlet approach axis machine; Under the effect of control valve, unnecessary hydraulic oil enters spill port 5 through the overflow hole 10 of control valve, returns oil tank 13 again, thereby carries out outer loop.
Claims (1)
1. steering gear pump, comprise the pump housing (1), be rotatably connected to two gears (2) that are meshed in the pump housing (1), the pump housing (1) front portion is provided with filler opening (3), bonnet (7) is equipped with in the pump housing (1) rear end, control valve (8) and oil outlet (4) are housed in the bonnet (7), it is characterized in that: the end face of described bonnet (7) is provided with return opening (5), overflow hole (10) UNICOM of return opening (5) and control valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201356814U CN202031832U (en) | 2011-05-03 | 2011-05-03 | Steering gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201356814U CN202031832U (en) | 2011-05-03 | 2011-05-03 | Steering gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031832U true CN202031832U (en) | 2011-11-09 |
Family
ID=44894130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201356814U Expired - Fee Related CN202031832U (en) | 2011-05-03 | 2011-05-03 | Steering gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202031832U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536800A (en) * | 2012-02-10 | 2012-07-04 | 长治液压有限公司 | Steering gear pump |
| CN103075377A (en) * | 2013-01-29 | 2013-05-01 | 潍柴动力（青州）传控技术有限公司 | Hydraulic pump with pressure selecting valve |
| CN114922814A (en) * | 2022-05-17 | 2022-08-19 | 南通油顺液压机械有限公司 | Fluid discharge capacity adjusting structure of hydraulic internal kneading gear pump and adjusting method thereof |
-
2011
- 2011-05-03 CN CN2011201356814U patent/CN202031832U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536800A (en) * | 2012-02-10 | 2012-07-04 | 长治液压有限公司 | Steering gear pump |
| CN102536800B (en) * | 2012-02-10 | 2015-06-17 | 长治液压有限公司 | Steering gear pump |
| CN103075377A (en) * | 2013-01-29 | 2013-05-01 | 潍柴动力（青州）传控技术有限公司 | Hydraulic pump with pressure selecting valve |
| CN114922814A (en) * | 2022-05-17 | 2022-08-19 | 南通油顺液压机械有限公司 | Fluid discharge capacity adjusting structure of hydraulic internal kneading gear pump and adjusting method thereof |
| CN114922814B (en) * | 2022-05-17 | 2024-10-15 | 南通普斯勒机械设备有限公司 | Fluid displacement adjusting structure of hydraulic internal gear pump and adjusting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20200503 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |