CN102155402A - Double-oil-outlet speed variable gear pump - Google Patents
Double-oil-outlet speed variable gear pump Download PDFInfo
- Publication number
- CN102155402A CN102155402A CN2011100739984A CN201110073998A CN102155402A CN 102155402 A CN102155402 A CN 102155402A CN 2011100739984 A CN2011100739984 A CN 2011100739984A CN 201110073998 A CN201110073998 A CN 201110073998A CN 102155402 A CN102155402 A CN 102155402A
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- pump
- assembly
- oil
- gear
- driving gear
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Abstract
The invention discloses a double-oil-outlet speed variable gear pump, which belongs to the technical field of hydraulic pumps. The problem to be solved is to provide a low-pressure double-oil-outlet speed variable gear pump which is suitable for a bulldozer, is provided with two oil outlets and an oil inlet and has high flow. The technical scheme is that: a front pump assembly and a rear pump assembly are connected with each other through a front pump body; an internal spline is arranged on the connection part between a rear pump driving gear and a front pump driving gear, and is used together with an external spline of the front pump driving gear in a matching way; a front and rear pump shared general oil inlet is formed on the front pump body; and a front pump oil outlet and a rear pump oil outlet are formed on the end face of a front cover assembly respectively. The pump can be widely applied to speed-variable gear pumps.
Description
Technical field
The two oil outlet speed change gear pumps of the present invention belong to the oil hydraulic pump technical field.
Background technique
The pump body structure of the two oil circuit low-pressure hydraulic speed change gear pumps of existing big flow mainly comprises at present: two cover pump protecgulums, pump postoperculum, the pump housing, front and back pump linkage structure complexity, the volume of pump is big, part is more, two filler openings, two oil outlets are arranged, and pump delivery, oil absorption, oil outlet setting all can not meet the demands.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and a kind of two oil circuit speed change gear pumps of the low pressure that two oil outlets, filler opening, big flow are arranged that are applicable to bulldozer are provided.
Pump assembly and back pump assembly before two oil outlet speed change gear pumps, integral body are divided into, preceding pump assembly comprises front pump driving gear, preceding cap assembly, first side plate, second side plate, front pump driven gear, the preceding pump housing; Back pump assembly comprises the back pump housing, rear pump driven gear, rear pump driving gear, rear cover assembly, the 3rd side plate, the 4th side plate.
Before pump assembly and back pump assembly couple together by the preceding pump housing, the attachment portion of rear pump driven gear and front pump driving gear is designed to internal spline, is used with the external splines of front pump driving gear, is provided with a shared total filler opening of front and back pump on the preceding pump housing; The front pump oil outlet and after pump hydraulic fluid port be located at respectively before on the end face of cap assembly.
Compared with prior art, the invention has the beneficial effects as follows: optimized pump body structure, reduced number of spare parts; Adopt floating side plate formula structure, increased volume, improved the efficient of pump; Pump intermediate connecting ring joint before and after having reduced; The oil outlet of forward and backward pump is located on the protecgulum end face, and pump shared filler opening in front and back is located on the pump housing, can reduce installing space like this, can satisfy performance requirement again, makes the pump structure compactness, stable and reliable operation, and obviously improve working life.Discharge capacity of the present invention is big, and oil absorption is strong, and compact structure can be two compensator pressure system fuel feeding, has satisfied the performance requirement of main frame.
Description of drawings
Fig. 1 is the two oil outlet speed change gear pump structure plan views of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the plan view of Fig. 2.
1-front pump driving gear among the figure; 2-seal ring, 3-preceding cap assembly, 4-front pump driven gear, 5-the first clamping bolt, 6-the first side plate, 7-the second side plate, the 8-preceding pump housing, 9-the second clamping bolt, 10-back pump housing, 11-rear cover assembly, 12-rear pump driven gear, 13-rear pump driving gear, 14-the four side plate, 15-the three cylindrical pin, 16-the second straight pin, 17-the three side plate, 18-the first straight pin, 19-front pump oil outlet, 20-after pump hydraulic fluid port, 21-total filler openings.
Embodiment
As shown in Figure 1, two oil outlet speed change gear pumps, pump assembly and back pump assembly before integral body is divided into, preceding pump assembly comprises front pump driving gear 1, preceding cap assembly 3, first side plate 6, second side plate 7, front pump driven gear 4, the preceding pump housing 8; Back pump assembly comprises the back pump housing 10, rear pump driven gear 12, rear pump driving gear 13, rear cover assembly 11, the 3rd side plate 17, the 4th side plate 14.
Gear pump integral body is preceding pump assembly and back pump assembly, forward and backward pump assembly couples together by the preceding pump housing 8, rear pump driven gear 12 is designed to internal spline with the attachment portion of front pump driving gear, be used with the external splines of front pump driving gear 1, as shown in Figure 3, on the preceding pump housing 8, be provided with a shared total filler opening 21 of front and back pump; As shown in Figure 2, front pump oil outlet 19 and after pump hydraulic fluid port 20 be located at respectively before on the end face of cap assembly 3.
The two oil outlet speed change gear pumps of the present invention have reduced number of spare parts with the pump housing of general two oil circuit gear pumps and the preceding pump housing 8 that intermediate synthesizes this gear pump, have strengthened the mechanical strength of pump simultaneously; Rear pump driven gear 12 and front pump attachment portion are designed to internal spline, are used with the external splines of front pump driving gear 1, be used for the transmission of forward and backward pump moment of torsion, simple in structure, it is less to take up room, and connects reliable.
The two oil outlet speed change gear pumps of the present invention are floating side plate formula low pressure gear pump, rely on floating side plate to come the pressure of this gear pump of balance, have reached the purpose that increases volumetric efficiency; Two oil outlets of this pump are located at the protecgulum end face, directly are connected with being subjected to oil turbine, and a pump shared filler opening in front and back is located on the pump housing, has reduced the pipe fitting of compensator pressure system, has satisfied the performance requirement of main frame simultaneously.First clamping bolt 5, second clamping bolt 9, first straight pin 18, when second straight pin 16 is used to assemble with three cylindrical pin 15 pump housing the location be connected.The shaft extension end place of cap assembly 3 is provided with seal ring 2 and prevents oil liquid leakage before pump.
Claims (1)
1. pump assembly and back pump assembly before two oil outlet speed change gear pumps, integral body are divided into, preceding pump assembly comprises front pump driving gear (1), preceding cap assembly (3), first side plate (6), second side plate (7), front pump driven gear (4), the preceding pump housing (8); Back pump assembly comprises the back pump housing (10), rear pump driven gear (12), rear pump driving gear (13), rear cover assembly (11), the 3rd side plate (17), the 4th side plate (14), it is characterized in that: gear pump is whole to be preceding pump assembly and back pump assembly, forward and backward pump assembly couples together by the preceding pump housing (8), the attachment portion of rear pump driven gear (12) and front pump driving gear is designed to internal spline, is used with the external splines of front pump driving gear (1); The shared total filler opening of pump (21) before and after on the preceding pump housing (8), being provided with one; Front pump oil outlet (19) and after pump hydraulic fluid port (20) and be located at respectively on the end face of preceding cap assembly (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100739984A CN102155402A (en) | 2011-03-26 | 2011-03-26 | Double-oil-outlet speed variable gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100739984A CN102155402A (en) | 2011-03-26 | 2011-03-26 | Double-oil-outlet speed variable gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102155402A true CN102155402A (en) | 2011-08-17 |
Family
ID=44437027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100739984A Pending CN102155402A (en) | 2011-03-26 | 2011-03-26 | Double-oil-outlet speed variable gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102155402A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287369A (en) * | 2011-09-06 | 2011-12-21 | 阜新工大科技发展有限公司 | Large discharge pump and motor integrated oil supply device |
| CN104913038A (en) * | 2015-06-20 | 2015-09-16 | 阜新德尔汽车部件股份有限公司 | Oil conveying device of vehicle automatic transmission |
| CN106996371A (en) * | 2017-04-13 | 2017-08-01 | 天津市汇晶丰精密机械有限公司 | A kind of synchronous gear pump of discharge capacity |
| CN113482914A (en) * | 2021-08-13 | 2021-10-08 | 上海尚实能源科技有限公司 | Gear oil pump of turboprop engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2199333Y (en) * | 1994-06-09 | 1995-05-31 | 青州液压件厂 | Duplex gear pump with one suction inlet |
| CN2199335Y (en) * | 1994-06-09 | 1995-05-31 | 青州液压件厂 | Nest pump with overflow valve |
| CN2211506Y (en) * | 1994-11-10 | 1995-11-01 | 青州液压件厂 | Improved two linkage gear pump |
| CN2217124Y (en) * | 1994-11-10 | 1996-01-10 | 青州液压件厂 | high pressure double gear pump |
| JPH09112445A (en) * | 1995-10-20 | 1997-05-02 | Kayaba Ind Co Ltd | Gear pump |
| CN2751161Y (en) * | 2004-12-31 | 2006-01-11 | 徐州科源液压有限公司 | Hydraulic gear pump |
| CN202017626U (en) * | 2011-03-26 | 2011-10-26 | 长治液压有限公司 | High-flow speed-variable gear pump with double oil outlets |
-
2011
- 2011-03-26 CN CN2011100739984A patent/CN102155402A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2199333Y (en) * | 1994-06-09 | 1995-05-31 | 青州液压件厂 | Duplex gear pump with one suction inlet |
| CN2199335Y (en) * | 1994-06-09 | 1995-05-31 | 青州液压件厂 | Nest pump with overflow valve |
| CN2211506Y (en) * | 1994-11-10 | 1995-11-01 | 青州液压件厂 | Improved two linkage gear pump |
| CN2217124Y (en) * | 1994-11-10 | 1996-01-10 | 青州液压件厂 | high pressure double gear pump |
| JPH09112445A (en) * | 1995-10-20 | 1997-05-02 | Kayaba Ind Co Ltd | Gear pump |
| CN2751161Y (en) * | 2004-12-31 | 2006-01-11 | 徐州科源液压有限公司 | Hydraulic gear pump |
| CN202017626U (en) * | 2011-03-26 | 2011-10-26 | 长治液压有限公司 | High-flow speed-variable gear pump with double oil outlets |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287369A (en) * | 2011-09-06 | 2011-12-21 | 阜新工大科技发展有限公司 | Large discharge pump and motor integrated oil supply device |
| CN104913038A (en) * | 2015-06-20 | 2015-09-16 | 阜新德尔汽车部件股份有限公司 | Oil conveying device of vehicle automatic transmission |
| CN106996371A (en) * | 2017-04-13 | 2017-08-01 | 天津市汇晶丰精密机械有限公司 | A kind of synchronous gear pump of discharge capacity |
| CN113482914A (en) * | 2021-08-13 | 2021-10-08 | 上海尚实能源科技有限公司 | Gear oil pump of turboprop engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110817 |
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| RJ01 | Rejection of invention patent application after publication |