CN102837744A - Gapless sealing hydraulic reversing device - Google Patents
Gapless sealing hydraulic reversing device Download PDFInfo
- Publication number
- CN102837744A CN102837744A CN2012103505583A CN201210350558A CN102837744A CN 102837744 A CN102837744 A CN 102837744A CN 2012103505583 A CN2012103505583 A CN 2012103505583A CN 201210350558 A CN201210350558 A CN 201210350558A CN 102837744 A CN102837744 A CN 102837744A
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- Prior art keywords
- reversing shaft
- hole
- pump housing
- reversing
- lifting
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- Details Of Reciprocating Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a gapless sealing hydraulic reversing device, which comprises a pump body and a reversing shaft, wherein the reversing shaft is in gapless matching with a shaft hole of the pump body; the outer side wall of the reversing shaft is provided with an oil leakage tank; an outlet end of the oil leakage tank is connected with an oil leakage hole of the pump body; an inlet end of the oil leakage tank is positioned on a side edge of a fallback oil hole; and in a fallback state, two through holes in the pump body are communicated with the inlet end of the oil leakage tank and the fallback oil hole respectively. The gapless sealing hydraulic reversing device is skillful in design, convenient to use, high in practicability and high in cost performance, and has the advantages of good sealing effect, long service life, high safety and stability, high market competitiveness and the like.
Description
Technical field
The present invention relates to the driver's cab turnover lifting device in the automobile technical field, especially a kind of gap-free sealed hydraulic pressure reversing arrangement.
Background technology
Hydraulic pressure exchange system in the driver's cab turnover lifting device is the important foundation that guarantees the lifting state; This hydraulic pressure exchange system mainly is made up of the pump housing and reversing shaft; Reversing shaft is inserted in the pump housing; Be shaped on two lifting oilholes and a falling oilhole on the reversing shaft, be shaped on two through holes that are used to install oil nozzle on the pump housing, lead to the hole site is corresponding with the lifting oilhole.All adopt the free-running fit mounting means between the reversing shaft and the pump housing at present; Go into fuel tank through the gap through pump housing draining orifice flow so that make oil product; Therefore when obtaining accurately lift location, obtain good sealing property again, to guarantee the safety of whole lifting process.The most domestic product all adopts traditional O type circle sealing now, and to having relatively high expectations of sealing member, frequent switching-over can cause seal degree to reduce, even oil leakage phenomenon takes place.Though external product has solved this technical barrier, price is very expensive, and enterprise is difficult to bear expensive cost of equipment.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide a kind of simple in structure, reasonable in design, cost is low and the gap-free sealed hydraulic pressure reversing arrangement of good sealing effect.
The present invention solves its technical matters and realizes through following technical scheme:
A kind of gap-free sealed hydraulic pressure reversing arrangement comprises the pump housing and reversing shaft, is shaped on axis hole on the pump housing; Reversing shaft is inserted in this axis hole; Reversing shaft inside is shaped on axial cavity, is shaped on the fuel feed hole that is communicated with this cavity, two lifting oilholes and a falling oilhole on the reversing shaft, and two lifting oilholes are positioned at same side; Fall oilhole after rise and be positioned at another side; Be shaped on two through holes that are used to connect oil nozzle on the pump housing, these two through holes are connected with two lifting oilholes respectively when being in the lifting state, it is characterized in that: cooperate for no gap between reversing shaft and the pump housing axis hole; Make a drain pan on the lateral wall of reversing shaft; The exit end of this drain pan is connected with pump housing draining hole, and the entrance point of this drain pan is positioned at and falls the oilhole side after rise, and two through holes when being in the falling state on the pump housing are connected with the entrance point and the falling oilhole of drain pan respectively.
And a switching-over pin-and-hole is made in the end of described reversing shaft, and the reversing shaft outside face between switching-over pin-and-hole and fuel feed hole is coaxial makes a boss.
Advantage of the present invention and beneficial effect are:
1, the pump housing of this device and reversing shaft adopt no gap fit structure; And make drain pan on the reversing shaft; Oil product can pass through this drain pan and go into fuel tank through pump housing draining orifice flow; Therefore use this product when obtaining accurately lift location, obtained good sealing property again, guaranteed the safe reliability of whole lifting process.
2, the coaxial boss of making of reversing shaft outside face between switching-over pin-and-hole and fuel feed hole, oil product was excessive when this boss can prevent oil suction.
3, the reversing shaft of this device adopts the environmental protection coating technology, has reached the special seal requirement between the pump housing and the reversing shaft through special processing then, has replaced traditional sealing means.In addition, later-model coating technology has also increased the resistance to abrasion and the anti-corrosive properties of this product, and improve ten times than original technology the service life of product.
4, this device cost performance is high, same product precision, quality and working ability, and price is lower by 50% than similar products, and technical service is more quick and economical than foreign-made merchant especially.
Plurality of advantages such as 5, the present invention is a kind of gap-free sealed hydraulic pressure reversing arrangement ingenious, easy to use, practical, that cost performance is high that designs, and this device has good sealing effect, long service life, security and stability is high, the market competitiveness is strong.
Description of drawings
Fig. 1 is cutaway view of the present invention (a lifting state);
Fig. 2 is the left view of Fig. 1;
Fig. 3 is cutaway view of the present invention (a falling state);
Fig. 4 is the scheme drawing one (showing the lifting oilhole) of reversing shaft;
Fig. 5 is the scheme drawing two (show and fall oilhole and drain pan after rise) of reversing shaft.
The specific embodiment
Through specific embodiment the present invention is made further detailed description below, following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of gap-free sealed hydraulic pressure reversing arrangement comprises the pump housing 1 and reversing shaft 2, is shaped on an axis hole on the pump housing, and reversing shaft is inserted in this axis hole.An axial cavity 3 is made in reversing shaft inside, built-in steel ball 8 and the spring of being placed with of this cavity.Make the fuel feed hole that is communicated with cavity 7, two lifting oilholes 4 and one on the reversing shaft and fall oilhole 11 after rise; Two lifting oilholes are positioned at same side; Fall oilhole after rise and be positioned at another side, be shaped on two through holes that are used to connect oil nozzle 5 on the pump housing, as shown in Figure 1; When being in the lifting state, these two through holes are connected with two lifting oilholes respectively.Because above structure is prior art, therefore no longer give unnecessary details.
Innovative point of the present invention is: cooperate installation for no gap between reversing shaft and the pump housing axis hole; On the lateral wall of reversing shaft, make a drain pan 9; The exit end of this drain pan is communicated with pump housing draining hole 10, and the entrance point of this drain pan is positioned at and falls the oilhole side after rise.As shown in Figure 3, when being in the falling state, two through holes on the pump housing are connected with the entrance point and the falling oilhole of drain pan respectively.
A switching-over pin-and-hole 13 that is used for plug-in mounting switching-over pin 6 is made in the end of reversing shaft, the coaxial boss 12 of making of reversing shaft outside face between switching-over pin-and-hole and fuel feed hole, and this boss can play the excessive effect of oil product when preventing oil suction.
Principle of work of the present invention is:
1, lifting process
The arm shaft upward movement drives on the plunger axis and moves, and steel ball rises from the oil-sucking hole oil suction; Arm shaft moves downward, and steel ball falls the sealing oil-sucking hole after rise, utilizes oil pressure that the steel ball in the reversing shaft is opened; Oil is headed in the reversing shaft, and when two lifting oilholes of reversing shaft were connected oil nozzle, hydraulic oil flowed into elevating ram through an oil nozzle; Oil product forms circulation through flowing into reversing shaft from another oil nozzle, plays castering action.
2, falling process
The arm shaft upward movement drives on the plunger axis and moves, and steel ball rises from the oil-sucking hole oil suction; Arm shaft moves downward, and steel ball falls the sealing oil-sucking hole after rise, utilizes oil pressure that the steel ball in the reversing shaft is opened; Oil is headed in the reversing shaft, and when the falling oilhole was aimed at oil nozzle with drain pan, hydraulic oil flowed into elevating ram with the oil cylinder roof fall through falling the oilhole oil nozzle after rise; Oil product is gone into fuel tank through the reversing shaft drain pan through pump housing draining orifice flow, and this is the decline process.
Claims (3)
1. a gap-free sealed hydraulic pressure reversing arrangement comprises the pump housing and reversing shaft, is shaped on axis hole on the pump housing; Reversing shaft is inserted in this axis hole; Reversing shaft inside is shaped on axial cavity, is shaped on the fuel feed hole that is communicated with this cavity, two lifting oilholes and a falling oilhole on the reversing shaft, and two lifting oilholes are positioned at same side; Fall oilhole after rise and be positioned at another side; Be shaped on two through holes that are used to connect oil nozzle on the pump housing, these two through holes are connected with two lifting oilholes respectively when being in the lifting state, it is characterized in that: cooperate for no gap between reversing shaft and the pump housing axis hole; Make a drain pan on the lateral wall of reversing shaft; The exit end of this drain pan is connected with pump housing draining hole, and the entrance point of this drain pan is positioned at and falls the oilhole side after rise, and two through holes when being in the falling state on the pump housing are connected with the entrance point and the falling oilhole of drain pan respectively.
2. gap-free sealed hydraulic pressure reversing arrangement according to claim 1 is characterized in that: a switching-over pin-and-hole is made in the end of described reversing shaft.
3. gap-free sealed hydraulic pressure reversing arrangement according to claim 1 is characterized in that: the reversing shaft outside face between switching-over pin-and-hole and fuel feed hole is coaxial makes a boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210350558.3A CN102837744B (en) | 2012-09-19 | 2012-09-19 | Gap-free sealed hydraulic commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210350558.3A CN102837744B (en) | 2012-09-19 | 2012-09-19 | Gap-free sealed hydraulic commutator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102837744A true CN102837744A (en) | 2012-12-26 |
| CN102837744B CN102837744B (en) | 2016-03-23 |
Family
ID=47365533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210350558.3A Expired - Fee Related CN102837744B (en) | 2012-09-19 | 2012-09-19 | Gap-free sealed hydraulic commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102837744B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69407348T2 (en) * | 1993-06-25 | 1998-05-14 | Denso Corp | pump |
| CN201696254U (en) * | 2010-05-28 | 2011-01-05 | 常州协力汽车零部件有限公司 | Dual-purpose integral oil pump capable of being operated by hand or power |
| CN202320549U (en) * | 2011-11-18 | 2012-07-11 | 新魁液压技术有限公司 | Manual pump station of hydraulic turnover system of heavy truck cabs |
| CN102556182A (en) * | 2010-12-31 | 2012-07-11 | 上海中欧汽车电器有限公司 | Hydraulic pump assembly of turnover device for automobile cab |
| CN202879624U (en) * | 2012-09-19 | 2013-04-17 | 天津市恒信精密机械有限公司 | Gapless seal hydraulic reversing system |
-
2012
- 2012-09-19 CN CN201210350558.3A patent/CN102837744B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69407348T2 (en) * | 1993-06-25 | 1998-05-14 | Denso Corp | pump |
| CN201696254U (en) * | 2010-05-28 | 2011-01-05 | 常州协力汽车零部件有限公司 | Dual-purpose integral oil pump capable of being operated by hand or power |
| CN102556182A (en) * | 2010-12-31 | 2012-07-11 | 上海中欧汽车电器有限公司 | Hydraulic pump assembly of turnover device for automobile cab |
| CN202320549U (en) * | 2011-11-18 | 2012-07-11 | 新魁液压技术有限公司 | Manual pump station of hydraulic turnover system of heavy truck cabs |
| CN202879624U (en) * | 2012-09-19 | 2013-04-17 | 天津市恒信精密机械有限公司 | Gapless seal hydraulic reversing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102837744B (en) | 2016-03-23 |
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| 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 |
Granted publication date: 20160323 Termination date: 20180919 |
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| CF01 | Termination of patent right due to non-payment of annual fee |