CN105298834A - External gear pump capable of being used for forward and reverse rotation - Google Patents
External gear pump capable of being used for forward and reverse rotation Download PDFInfo
- Publication number
- CN105298834A CN105298834A CN201510779161.XA CN201510779161A CN105298834A CN 105298834 A CN105298834 A CN 105298834A CN 201510779161 A CN201510779161 A CN 201510779161A CN 105298834 A CN105298834 A CN 105298834A
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- China
- Prior art keywords
- gear shaft
- pump
- pump body
- shaft
- driving gear
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- 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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Abstract
The invention provides an external gear pump capable of being used for forward and reverse rotation. The external gear pump comprises a gear pump body, and is characterized in that the gear pump body is divided into an upper pump body (5) and a lower pump body (1); the two ends of a driving gear shaft (9) and the two ends of a driven gear shaft (4) are inserted into an inner cavity of the upper pump body (5) and an inner cavity of the lower pump body (1) respectively; one end of a spline shaft (6) is inserted into the inner cavity of the upper pump body, the driving gear shaft (9) and the spline shaft (6) are connected through an inner spline and an outer spline, and two floating side plates (2) are attached to the two end faces of a gear respectively; and the two ends of the driving gear shaft (9) and the two ends of the driven gear shaft (4) are sleeved with two pairs of sliding bearings respectively, the end, connected with the driving gear shaft, of the spline shaft is sleeved with two conical roller bearings, during assembly, the position of the driving gear shaft (9) and the position of the driven gear shaft (4) are exchanged, and the gear pump for forward rotation or reverse rotation can be assembled according to requirements.
Description
Technical field
The present invention relates to a kind of external gear pump, particularly relate to a kind of external gear pump that can be used in clockwise and anticlockwise.
Background technique
External gear pump is that a kind of continuous transmission by two pitch wheels produces sealed volume change, the oil hydraulic pump of transportation work fluid is carried out with this, have that structure is simple, self-priming performance good, the advantage such as, reliable operation insensitive to oil contamination, be widely used in hydraulic transmission.
At present; usually can use the gear pump rotated and reverse in general hydraulic system simultaneously; but because the working state of gear pump is by its structural limitations; turning to of it can not arbitrarily change; if change gear pump to turn to; the producer producing gear pump at present seal element will be caused to lose efficacy, even the damage of gear pump, so all can produce rotate forward gear pump and counter gear pump simultaneously.But owing to rotating forward the difference on gear pump and counter gear pump structure and on part, so manufacturer needs to manufacture by different manufacturing mechanisms and processing technology the gear pump that this two kinds of differences turn to simultaneously, the existence of these problems is unfavorable for the production of current gear pump and the maintenance management in later stage, also greatly reduces the manufacturing efficiency of gear pump simultaneously.
Summary of the invention
Technical problem to be solved by this invention overcomes the deficiencies in the prior art, provides a kind of external gear pump that can be used in clockwise and anticlockwise.
A kind of external gear pump that can be used in clockwise and anticlockwise, comprise gear pump body, it is characterized in that: gear pump body is divided into upper pump casing, lower pump body, the inner chamber of upper pump casing and lower pump body is inserted at the two ends of driving gear shaft and driven gear shaft respectively, the inner chamber of upper pump casing is inserted in one end of splined shaft, driving gear shaft and splined shaft are by inside and outside splined, two floating side plates are fitted in gear both ends of the surface respectively, two pairs of sliding bearings are sheathed on driving gear shaft and driven gear shaft two ends respectively, two tapered roller bearings are sheathed on that one end that splined shaft connects with driving gear shaft, when assembling by the location swap of driving gear shaft and driven gear shaft, the gear pump of rotating forward or reversion can be assembled out respectively by demand.
Described upper pump casing with the junction plane of lower pump body on have two tapped holes, two tapped holes pass to the inner chamber of upper pump casing, and one of them seals with inner bolt.
Lower pump body inner chamber is divided into two single chamber by described driving gear shaft and driven gear shaft and upper and lower two side plates, and lower pump body filler opening is low pressure cavity volume, and oil outlet is high pressure cavity volume.
Two tapped holes on described lower pump body junction plane are symmetrical about dynamic two the gear shaft lines of centres of principal and subordinate.
Compared with the prior art, beneficial effect of the present invention is embodied in:
Gear pump body is divided into upper and lower two parts, driving shaft is divided into splined shaft and driving gear shaft two sections, the shortening of driving gear shaft length enhances its strength and stiffness, particularly only need by the location swap of driving gear shaft and driven gear shaft when assembling gear pump, tapped hole socket head screw upper pump casing bottom surface being positioned at oil outlet side is sealed simultaneously, the gear pump of forward or reverse can be assembled out by demand respectively.
The tapped hole do not sealed is positioned at the low-pressure cavity of gear pump oil pocket, and low pressure fluid enters upper pump casing inner chamber by tapped hole, thus reaches the effect of simultaneously lubricating two sliding bearings in two tapered roller bearings and upper pump casing inner chamber.
The external gear pump that can be used in clockwise and anticlockwise of the present invention is novel, structure is unique, the gear pump of rotating forward or reversion can be assembled out respectively according to demand, substantially increase the interchangeablity of the gear pump that difference turns to, advantageously in management and the maintenance of manufacturing mechanism, reduce cost of production, improve the manufacturing efficiency of gear pump.
Accompanying drawing explanation
Fig. 1 be the external gear pump that can be used in clockwise and anticlockwise of the present invention for reversing time the overall sectional drawing by two main axiss.
Fig. 2 be the external gear pump that can be used in clockwise and anticlockwise of the present invention for reversing time upper pump casing erection drawing.
Fig. 3 be the external gear pump that can be used in clockwise and anticlockwise of the present invention for rotating forward time the overall sectional drawing by two main axiss.
Fig. 4 be the external gear pump that can be used in clockwise and anticlockwise of the present invention for rotating forward time upper pump casing erection drawing.
Fig. 5 is the external gear pump lower pump body erection drawing that can be used in clockwise and anticlockwise of the present invention.
Fig. 6 is the C-C sectional view of upper pump casing 5 in Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, the external gear pump that can be used in clockwise and anticlockwise comprises upper pump casing 5, lower pump body 1, driving gear shaft 9, driven gear shaft 4, splined shaft 6, two floating side plates 2, two pairs of sliding bearings 3 and two tapered roller bearings 7 and 8; The inner chamber of upper pump casing 5 and lower pump body 1 is inserted at the two ends of driving gear shaft 9 and driven gear shaft 4 respectively, and the inner chamber of upper pump casing is inserted in one end of splined shaft 6, and driving gear shaft 9 and splined shaft 6 are by inside and outside splined; Two floating side plates 2 are fitted in gear both ends of the surface respectively; Two pairs of sliding bearings 3 are sheathed on driving gear shaft 9 and driven gear shaft 4 two ends respectively; Two tapered roller bearings 7 and 8 are sheathed on that one end that splined shaft connects with driving gear shaft.
The C-C section of upper pump casing as can be seen from Fig. 6, the structure of upper pump casing 5 is symmetrical about two gear shaft lines of centres, simultaneously upper pump casing 5 with the junction plane of lower pump body 1 on have two tapped holes 12 and 13 about two gear shaft line of centres symmetries, two tapped holes pass to the inner chamber that tapered roller bearing 8 is housed in upper pump casing 5.
In Figure 5, upper pump casing 5 and lower pump body 1 are connected by 8 fillister head screws 11, the upper surface fitting in the side plate 2 of gear upper-end surface is concordant with the upper surface of lower pump body 1, as can be seen from Fig. 1 and Fig. 5, lower pump body inner chamber is divided into two single chamber by driving gear shaft 9 and driven gear shaft 4 and upper and lower two side plates 2, as shown in Figure 5, lower pump body 1 filler opening is low pressure cavity volume, and oil outlet is high pressure cavity volume.
Fig. 1, Fig. 2 and Fig. 5 be the external gear pump that can be used in clockwise and anticlockwise of the present invention for reversing time erection drawing, now as shown in Figure 2, the tapped hole 13 be positioned at below two gear shaft lines of centres is sealed by socket head screw 10, fluid in low-pressure cavity enters the inner chamber of upper pump casing 5 from tapped hole 12, thus reaches the object of simultaneously lubricating two sliding bearings 3 in two tapered roller bearings 7 and 8 and upper pump casing inner chamber.
Fig. 3, Fig. 4 and Fig. 5 be the external gear pump that can be used in clockwise and anticlockwise of the present invention for rotating forward time erection drawing, the filler opening of gear pump of the present invention and oil outlet remain unchanged as shown in the figure, namely lower pump body 1 position remains unchanged, upper pump casing 5 is horizontally rotated 180 °, simultaneously by driving gear shaft 9 and driven gear shaft 4 location swap, again the socket head screw 10 in tapped hole 13 is taken out and seal tapped hole 12, the fluid in low-pressure cavity is now remained by the fluid of tapped hole 13, and two sliding bearings 3 that can simultaneously lubricate in two tapered roller bearings 7 and 8 and upper pump casing inner chamber, the gear pump that assembling like this completes is rotating forward gear pump.
The external gear pump that can be used in clockwise and anticlockwise of the present invention can assemble out the gear pump of rotating forward or reversion respectively according to demand, required interchangeablity is high, can ensure that the fluid of lubricating bearings is always the fluid of low pressure cavity volume simultaneously, be conducive to management and the maintenance of gear pump manufacturing mechanism, reduce cost of production, improve the manufacturing efficiency of gear pump.
Claims (4)
1. one kind can be used in the external gear pump of clockwise and anticlockwise, comprise gear pump body, it is characterized in that: gear pump body is divided into upper pump casing (5), lower pump body (1), the inner chamber of upper pump casing (5) and lower pump body (1) is inserted at the two ends of driving gear shaft (9) and driven gear shaft (4) respectively, the inner chamber of upper pump casing is inserted in one end of splined shaft (6), driving gear shaft (9) and splined shaft (6) are by inside and outside splined, two floating side plates (2) are fitted in gear both ends of the surface respectively, two pairs of sliding bearings are sheathed on driving gear shaft (9) and driven gear shaft (4) two ends respectively, two tapered roller bearings are sheathed on that one end that splined shaft connects with driving gear shaft, when assembling by the location swap of driving gear shaft (9) and driven gear shaft (4), the gear pump of rotating forward or reversion can be assembled out respectively by demand.
2. a kind of external gear pump that can be used in clockwise and anticlockwise as claimed in claim 1, it is characterized in that: upper pump casing (5) with the junction plane of lower pump body (1) on have two tapped holes, two tapped holes pass to the inner chamber of upper pump casing (5), and one of them seals with inner bolt.
3. a kind of external gear pump that can be used in clockwise and anticlockwise as claimed in claim 1, it is characterized in that: lower pump body inner chamber is divided into two single chamber by driving gear shaft and driven gear shaft and upper and lower two side plates, lower pump body filler opening is low pressure cavity volume, and oil outlet is high pressure cavity volume.
4. a kind of external gear pump that can be used in clockwise and anticlockwise as claimed in claim 2, is characterized in that: two tapped holes on lower pump body (1) junction plane are symmetrical about dynamic two the gear shaft lines of centres of principal and subordinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510779161.XA CN105298834B (en) | 2015-11-16 | 2015-11-16 | A kind of external gear rotary pump that can be used in rotating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510779161.XA CN105298834B (en) | 2015-11-16 | 2015-11-16 | A kind of external gear rotary pump that can be used in rotating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105298834A true CN105298834A (en) | 2016-02-03 |
| CN105298834B CN105298834B (en) | 2017-11-10 |
Family
ID=55196490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510779161.XA Expired - Fee Related CN105298834B (en) | 2015-11-16 | 2015-11-16 | A kind of external gear rotary pump that can be used in rotating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105298834B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523357A (en) * | 2016-12-01 | 2017-03-22 | 徐州科源液压股份有限公司 | Bearing lubricating structure of two-way gear oil pump |
| EP3904687A1 (en) | 2020-04-28 | 2021-11-03 | Maag Pump Systems AG | Gear pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089990U (en) * | 1991-01-18 | 1991-12-04 | 程樱 | Double direction floating gear pump |
| CN201198831Y (en) * | 2008-05-06 | 2009-02-25 | 合肥长源液压件有限责任公司 | High pressure bidirectional cast iron gear oil pump |
| CN201344124Y (en) * | 2008-12-31 | 2009-11-11 | 中船重工重庆液压机电有限公司 | Multifunctional low-noise bidirectional gear pump |
| CN201714658U (en) * | 2010-07-19 | 2011-01-19 | 泊姆克(天津)液压有限公司 | High-pressure gear pump |
| CN202091189U (en) * | 2011-05-24 | 2011-12-28 | 博顿液压股份有限公司 | Bidirectional external gear pump |
| CN205225667U (en) * | 2015-11-16 | 2016-05-11 | 王建兴 | External gear pump convenient to change direction of rotation |
-
2015
- 2015-11-16 CN CN201510779161.XA patent/CN105298834B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089990U (en) * | 1991-01-18 | 1991-12-04 | 程樱 | Double direction floating gear pump |
| CN201198831Y (en) * | 2008-05-06 | 2009-02-25 | 合肥长源液压件有限责任公司 | High pressure bidirectional cast iron gear oil pump |
| CN201344124Y (en) * | 2008-12-31 | 2009-11-11 | 中船重工重庆液压机电有限公司 | Multifunctional low-noise bidirectional gear pump |
| CN201714658U (en) * | 2010-07-19 | 2011-01-19 | 泊姆克(天津)液压有限公司 | High-pressure gear pump |
| CN202091189U (en) * | 2011-05-24 | 2011-12-28 | 博顿液压股份有限公司 | Bidirectional external gear pump |
| CN205225667U (en) * | 2015-11-16 | 2016-05-11 | 王建兴 | External gear pump convenient to change direction of rotation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523357A (en) * | 2016-12-01 | 2017-03-22 | 徐州科源液压股份有限公司 | Bearing lubricating structure of two-way gear oil pump |
| EP3904687A1 (en) | 2020-04-28 | 2021-11-03 | Maag Pump Systems AG | Gear pump |
| WO2021219471A1 (en) | 2020-04-28 | 2021-11-04 | Maag Pump Systems Ag | Gear pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105298834B (en) | 2017-11-10 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170926 Address after: Baita block economic development zone of Xianju County of Taizhou City, Zhejiang province 317300 Tang Denglu No. 52 Applicant after: Zhejiang Nader electromechanical Limited by Share Ltd Address before: Taizhou City, Zhejiang province 317300 Xianju Baita Economic Development Zone No. 52 Denglu Tang Applicant before: Wang Jianxing Applicant before: Lv Jianhe Applicant before: Guan Cheng |
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| GR01 | Patent grant | ||
| 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: 20171110 Termination date: 20201116 |