CN201198831Y - High pressure bidirectional cast iron gear oil pump - Google Patents
High pressure bidirectional cast iron gear oil pump Download PDFInfo
- Publication number
- CN201198831Y CN201198831Y CNU2008201172679U CN200820117267U CN201198831Y CN 201198831 Y CN201198831 Y CN 201198831Y CN U2008201172679 U CNU2008201172679 U CN U2008201172679U CN 200820117267 U CN200820117267 U CN 200820117267U CN 201198831 Y CN201198831 Y CN 201198831Y
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- oil
- pump
- cast iron
- hydraulic fluid
- fluid port
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Abstract
The utility model relates to a high-pressure bidirection cast iron geared oil pump. A pump housing consists of a front cover, a pump body and a back cover; a driving gear and a driven gear arranged inside the pump housing are supported by the front cover and the back cover; the two sides of the pump body are respectively provided with an oil port A and an oil port B; the high-pressure bidirection cast iron geared oil pump is characterized in that the inside of the front cover is provided with a low-pressure cavity communicated with a front cover oiltight; the low-pressure cavity chooses a lower pressure oil port from the oil port A and the oil port B and then is communicated with the lower pressure oil port through two unidirectional oil channels. The high-pressure bidirection cast iron geared oil pump can change the rotating direction at will when working, and has the advantages of high efficiency, low noise, pressure and abrasion resistance, attack resistance and low starting torque.
Description
Technical field
The utility model relates to gear oil pump, more specifically says so as the hydraulic gear oil pump of hydraulic system dynamical element, especially is widely used in the hydraulic system in the engineering machinery.
Technical background
Hydraulic gear oil pump in the prior art is limit owing to structure, and its rotation direction is determined, filler opening and oil outlet fixed-site, and sense of rotation can not change in the work, is check configuration.The bi-directional configuration that filler opening and oil outlet are used interchangeably has suitable demand in engineering machinery such as loader, fork truck, truck crane, bulldozer, dumping car, refuse collection vehicle, road building machine, marine machinery, obviously, the check configuration in the prior art can not satisfy this requirement.
Sealing configuration in the prior art makes the decrement of gear oil pump inner seal very big, directly causes the starting torque of pump excessive, and mechanical power loss is bigger, and the hydraulic system oil liquid temperature rise is too fast, influences the working life of hydraulic system.
The pump housing of the gray cast iron in the prior art can not satisfy gear pump and use needed performance under heavy duty, impact.
The model utility content
The utility model is for fear of above-mentioned existing in prior technology deficiency, provide a kind of can realization work in sense of rotation arbitrarily change low, withstand voltage wear-resistant, shock-resistant, the high-voltage bidirectional cast iron gear oil pump that starting torque is low of efficient height, noise.
The utility model technical solution problem adopts following technological scheme:
The utility model high-voltage bidirectional cast iron gear oil pump constitutes pump case by protecgulum, the pump housing and bonnet, and the driving gear and the driven gear that are positioned at pump case are supported by protecgulum and bonnet, and the both sides of the pump housing are respectively hydraulic fluid port A and hydraulic fluid port B.
Structural feature of the present utility model is that the low-pressure cavity that the protecgulum oil sealing is communicated with is set in described protecgulum, and described low-pressure cavity is selected to be connected with low pressure hydraulic fluid port among hydraulic fluid port A and the hydraulic fluid port B by two unidirectional oil circuits.
Structural feature of the present utility model also is:
Described two unidirectional oil circuits are to be respectively arranged with one-way valve A and one-way valve B in two oil circuits.
The sub-high pressure oil pocket that setting is made of side plate, seal ring and inner seal ring a and inner seal ring b, the oilhole on the side plate communicate the sub-high pressure oil pocket at driving gear place and the oil pocket of driven gear.
At the inner chamber of the pump housing, be positioned at hydraulic fluid port A and hydraulic fluid port B position place, connect the recessed road of the pump housing that is provided for increasing the mobile latus rectum of fluid vertically.
The described pump housing adopts low hardness high-strength abrasion-proof cast iron.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, the utility model bi-directional configuration both realized gear pump can be clockwise, both direction work counterclockwise, satisfy selecting for use of different operating modes, guaranteed gear pump inner loop unimpeded under different rotation directions again, farthest reduced the volume of gear pump.
2, the utility model adopts the sealing configuration of setting up sub-high pressure, can promote side plate is fitted on the gear face effectively, significantly reduce the face leakage of gear oil pump, can reduce simultaneously the decrement of Sealing significantly, raising along with each part processing precision, the matching gap enough little words of gear pump when assembling, can remove the inner seal of gear pump, make the moment of torsion of gear pump when starting drop to minimum, reduce the energy loss of hydraulic system significantly, reduce temperature elevation in hydraulic system, effectively prolonged the life time of fluid and each parts of hydraulic system.
3, the utility model adopts low hardness high-strength abrasion-proof cast iron, and higher properties of antifriction and wear resistance and certain damping noise reduction function are arranged.
4, the utility model is provided with the recessed road of the pump housing in the inner chamber of the pump housing, and the fluid circulation is smooth and easy under different situations such as satisfy under the situation that does not increase volume that oil pump advances in side that side goes out, last-in, last-out, side go out after advancing, laggard side goes out, and does not influence the efficient of gear pump simultaneously.
5, bi-directional configuration of the present utility model can be widely used in engineering machinery such as loader, fork truck, truck crane, bulldozer, dumping car, refuse collection vehicle, road building machine, marine machinery.
Description of drawings:
Fig. 1 is the utility model overall structure schematic representation.
Fig. 2 is the utility model automatic carry structural scheme of mechanism.
Fig. 3 (a) sets up the sealing configuration and the pump housing runner schematic representation in sub-high pressure chamber for the utility model.
Fig. 3 (b) is the utility model sub-high pressure chamber fluid driving pump lateral plate structure schematic representation.
Number in the figure: 1 driving gear, 2 protecgulums, 3 pump housings, 4 driven gears, 5 side plates, 6 seal rings, 7 bonnets, 8 jump rings, 9 protecgulum oil sealings, 10 bearings, 11 exterior seal rings, 12 low-pressure cavity, 13 one-way valve A, 14 one-way valve B, 15 hydraulic fluid port A, 16 hydraulic fluid port B, 17 straight pins, 18 inner seal ring a, 19 inner seal ring b, the recessed road of 20 pump housings, 21 sub-high pressure chambeies, 22 oilholes.
Below pass through embodiment, and in conjunction with the accompanying drawings the utility model be further described:
Embodiment:
Referring to Fig. 1, Fig. 2, constitute pump case by protecgulum 2, the pump housing 3 and bonnet 7, the driving gear 1 and the driven gear 4 that are positioned at pump case are supported by protecgulum 2 and bonnet 7, and the both sides of the pump housing 3 are respectively hydraulic fluid port A15 and hydraulic fluid port B16.
As shown in Figure 2, in the present embodiment, the low-pressure cavity 12 be communicated with protecgulum oil sealing 9 is set in protecgulum 2, low-pressure cavity 12 is connected with low pressure hydraulic fluid port among hydraulic fluid port A 15 and the hydraulic fluid port B 16 by two unidirectional oil circuits selections.In concrete the enforcement, two unidirectional oil circuits are to be respectively arranged with one-way valve A 13 and one-way valve B 14 in two oil circuits.This structure setting has guaranteed the unimpeded of gear oil pump inner loop, when no matter the driving gear 1 of gear pump is when turning clockwise or be rotated counterclockwise, the oil pocket at gear pump oil sealing place is always low-pressure cavity, has guaranteed that gear oil pump is turning clockwise and is being rotated counterclockwise under the situation and can both work normally.
Referring to Fig. 3 (a) and Fig. 3 (b), in the present embodiment, setting is by side plate 5, the sub-high pressure oil pocket that seal ring 6 and inner seal ring a18 and inner seal ring b 19 constitute, oilhole 22 on the side plate 5 communicates the sub-high pressure oil pocket at driving gear 1 place and the oil pocket of driven gear 4, form the sub-high pressure chamber 21 at the side plate back side, make side plate 5 be subjected to the thrust of an equilibrium, and the degree of balance of the thrust at two ends also is very high, realize the axial float of side plate 5, make side plate can fit on the end face of gear effectively, guaranteed the efficiency operation of gear pump, can reduce the precompression of inner seal liner significantly, along with the raising of each part processing precision, the matching gap of gear pump when assembling is enough little, even can cancel inner seal liner, thereby can significantly reduce the starting torque of gear pump, reduce the energy loss of hydraulic system significantly, reduce temperature elevation in hydraulic system, the life time that has effectively prolonged fluid and each parts of hydraulic system.
Inner chamber at the pump housing 3, be positioned at hydraulic fluid port A and hydraulic fluid port B position place, connect the recessed road 20 of the pump housing that is provided for increasing the mobile latus rectum of fluid vertically, this structural type has not strengthening gear oil pump can both make the fluid latus rectum that flows smoothly under pump housing volume and the different oil inlet and outlet connection situation, do not influence the volumetric efficiency of gear oil pump, reduced gear pump simultaneously because of inhaling the noise that sky and air pocket produce.
For further reducing noise, shock-resistant, increase the service life, improve functional reliability, also comprise in concrete the enforcement:
The pump housing 3 adopts the low hardness high-strength abrasion-proof cast iron with sound-absorbing and damping effect.
Bearing 10 is selected shock resistance anti-pollution heavy-duty bearing for use.
The material of side plate 5 and seal ring 6 uses the casting high strength wear-proof bronze, simultaneously the antifriction processing has been carried out on the surface of each friction pair.
Conventional setting is also included within protecgulum oil sealing place jump ring 8 is set, and between the pump housing 3 and protecgulum 2 and bonnet 7, exterior seal ring 11 is set respectively prevents that hydraulic oil from leaking outside, and straight pin 17 guarantees that mounting points are accurate, stops the sideslip of the pump housing 3.
Claims (5)
1. high-voltage bidirectional cast iron gear oil pump, constitute pump case by protecgulum (2), the pump housing (3) and bonnet (7), the driving gear (1) and the driven gear (4) that are positioned at pump case are supported by protecgulum (2) and bonnet (7), the both sides of the pump housing (3) are respectively hydraulic fluid port A (15) and hydraulic fluid port B (16), it is characterized in that in described protecgulum (2) being provided with the low-pressure cavity (12) that is communicated with protecgulum oil sealing (9), described low-pressure cavity (12) is connected with low pressure hydraulic fluid port among hydraulic fluid port A (15) and the hydraulic fluid port B (16) by two unidirectional oil circuits selections.
2. high-voltage bidirectional cast iron gear oil pump according to claim 1 is characterized in that described two unidirectional oil circuits are to be respectively arranged with one-way valve A (13) and one-way valve B (14) in two oil circuits.
3. high-voltage bidirectional cast iron gear oil pump according to claim 1, it is characterized in that being provided with the sub-high pressure oil pocket by side plate (5), seal ring (6) and inner seal ring a (18) and inner seal ring b (19) formation, the oilhole (22) on the side plate (5) communicates the sub-high pressure oil pocket that driving gear (1) locates and the oil pocket of driven gear (4).
4. high-voltage bidirectional cast iron gear oil pump according to claim 1 is characterized in that the inner chamber in the described pump housing (3), is positioned at A hydraulic fluid port (15) and B hydraulic fluid port (16) position place, connects the recessed road of the pump housing (20) that is provided for increasing the mobile latus rectum of fluid vertically.
5. high-voltage bidirectional cast iron gear oil pump according to claim 1 is characterized in that the described pump housing (3) adopts low hardness high-strength abrasion-proof cast iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201172679U CN201198831Y (en) | 2008-05-06 | 2008-05-06 | High pressure bidirectional cast iron gear oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201172679U CN201198831Y (en) | 2008-05-06 | 2008-05-06 | High pressure bidirectional cast iron gear oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201198831Y true CN201198831Y (en) | 2009-02-25 |
Family
ID=40449986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201172679U Expired - Fee Related CN201198831Y (en) | 2008-05-06 | 2008-05-06 | High pressure bidirectional cast iron gear oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201198831Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705230A (en) * | 2012-05-09 | 2012-10-03 | 苏州百胜动力机器有限公司 | Gear pump |
| CN105298834A (en) * | 2015-11-16 | 2016-02-03 | 王建兴 | External gear pump capable of being used for forward and reverse rotation |
-
2008
- 2008-05-06 CN CNU2008201172679U patent/CN201198831Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705230A (en) * | 2012-05-09 | 2012-10-03 | 苏州百胜动力机器有限公司 | Gear pump |
| CN102705230B (en) * | 2012-05-09 | 2015-09-02 | 苏州百胜动力机器股份有限公司 | A kind of gear pump |
| CN105298834A (en) * | 2015-11-16 | 2016-02-03 | 王建兴 | External gear pump capable of being used for forward and reverse rotation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Dangtu Road, Yaohai Industrial Park, latitude D 230031 Hefei Road, Anhui Province Patentee after: Hefei Changyuan Hydraulics Co., Ltd. Address before: Dangtu Road, Yaohai Industrial Park, latitude D 230011 Hefei Road, Anhui Province Patentee before: Hefei Changyuan Hydraulics Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 Termination date: 20160506 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |