CN2363915Y - Integrated hydraulic power device specially adapted for four-wheeled tractor - Google Patents
Integrated hydraulic power device specially adapted for four-wheeled tractor Download PDFInfo
- Publication number
- CN2363915Y CN2363915Y CN 99227402 CN99227402U CN2363915Y CN 2363915 Y CN2363915 Y CN 2363915Y CN 99227402 CN99227402 CN 99227402 CN 99227402 U CN99227402 U CN 99227402U CN 2363915 Y CN2363915 Y CN 2363915Y
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- China
- Prior art keywords
- gear type
- type pump
- change
- gear pump
- over valve
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- Expired - Fee Related
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Abstract
The utility model relates to an integrated hydraulic power device which is especially adapted for a four-wheeled tractor. The utility model comprises a change valve, a gear pump and a power transmission mechanism, wherein, the rear end face of the gear pump is connected with the change valve with an overflow valve in a sealing way, an oil channel in the change valve is mutually communicated with the gear pump, and the front end face of the gear pump is connected with a casing of the power transmission mechanism in a sealing way. A power input shaft of the gear pump extends into the casing and is connected with a jaw-embedding type clutch. The change valve, the gear pump and the power transmission mechanism are assembled into a whole at a high degree. The utility model has the characteristics of small volume, convenient installation, low cost, long service life and high work efficiency, and is especially suitable for a small four-wheeled tractor with a dynamic force output device.
Description
The utility model relates to a kind of hydraulic power unit that change-over valve, gear type pump and Power train are become one.
At present, the four-wheeled tractor especially hydraulic power unit that generally uses of small four-wheel tractor adopts the plunger pump that is installed on the change speed gear box, rely on the plunger of cam rotating mechanism promotion plunger pump in the change speed gear box reciprocating, so that high-voltage hydraulic oil to be provided, supply with hydraulic ram by high pressure fuel pipe again and make fore and aft motion, to finish the tipping self-unloading of trailer.Though plunger pump has the advantages that volume is little, function is complete, in use also have following point: 1, because the frequency of operation of plunger pump is higher, wearing and tearing are very fast, so service life is short, need often to change, and operating costs increases.2, adopt cam mechanism to promote plunger pump, can produce high frequency and the uneven hydraulic oil of flow velocity, therefore, cause greater impact power, influence the service life of hydraulic efficiency pressure system, 3, because of the flow velocity and the pressure of hydraulic oil are not high, realize that the trailer tipping self-unloading time is long, inefficiency can not satisfy the energy-efficient requirement of user.
The purpose of this utility model provides and a kind of change-over valve, gear type pump and Power train is become one, and has long service life, the special-purpose integrated-type hydraulic power unit of the four-wheeled tractor of high efficiency.
The purpose of this utility model can realize by following technical proposal: the special-purpose integrated hydraulic engine installation of a kind of four-wheeled tractor, comprise change-over valve, gear type pump and Power train, it is characterized in that: the sealing of gear type pump aft end face is connected with the change-over valve of carry potential overflow valve, the in-to-in oil duct and the gear type pump of change-over valve are communicated with each other, the front end face sealing of gear type pump is connected with the housing of Power train, and the power input shaft of gear type pump extends in the housing and is connected with a dental clutch.
Described dental clutch is made of slip cap and fixed cover, be connected with the power input shaft slide key of gear type pump with the slip cap that clutch handle joins, fixed cover one side is sleeved on the tractor motive power output shaft and by key and connects, and fastening with fastener, the opposite side of fixed cover and slip cap engagement.
Principle of work of the present utility model is: the power take-off shaft of four-wheeled tractor engages with the power input shaft of gear type pump by dental clutch or separates, to realize outputting power or to cut off power, when dental clutch engages transmission of power to gear type pump, gear type pump rotatablely moves by a pair of gear, hydraulic oil in the fuel tank has been become high pressure from low pressure, enter the oil inlet of change-over valve, make the hydraulic plunger cylinder working through high pressure fuel pipe.Because communicating with the high and low pressure oil pocket of gear type pump respectively into and out of hydraulic fluid port of change-over valve makes hydraulic oil communicate with each other at inner oil duct of change-over valve and gear type pump, when change-over valve was in center position, hydraulic oil carried out inner loop through the inside of change-over valve oil duct; Move hoisting position to when the handle of change-over valve, high pressure oil enters hydraulic ram cylinders through high pressure fuel pipe, the hydraulic ram cylinders lifting that makes progress, and the tipping of realizing trailer is from unloading functions; Too high when oil pressure, when exceeding nominal working pressure, by pass valve is opened the self-protection that realizes hydraulic efficiency pressure system.When the handle of change-over valve is moved lowering position to, the outer loop of hydraulic ram cylinders communicates with the low pressure oil pocket of change-over valve, and trailer is under the self gravitation effect, and the hydraulic oil in the compressing hydraulic ram cylinders is got back to fuel tank, hydraulic ram cylinders is back to nadir, and trailer recovers to keep flat the position.
The beneficial effects of the utility model are: each function component high concentration such as change-over valve, by pass valve, gear type pump and Power train is an one, at the uniform velocity turn round by gear type pump, hydraulic oil is evenly flowed, whole hydraulic system pressure is steady, overcome the high-frequency percussion of hydraulic oil in the former four-wheeled tractor hydraulic efficiency pressure system, improve the whole hydraulic work system life-span, also reduced operating costs simultaneously.After adopting gear type pump, the hydraulic oil flow velocity increases, and the pressure rising, can realize the tipping self-unloading of trailer at short notice, has improved the work efficiency of tipping self-unloading greatly, satisfies user's energy-efficient requirement.Integrated hydraulic engine installation of the present utility model is that each function component is interconnected to an integral body with minimum volume, therefore volume is little, easy for installation, simple to operation, simplified its structure and oil circuit simultaneously, reduced manufacturing cost, not only made its compact conformation, improve leak tightness, and improved the functional reliability of hydraulic efficiency pressure system.
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
Fig. 1 is a structural representation of the present utility model.
As shown in Figure 1, the special-purpose integrated-type hydraulic activator of four-wheeled tractor of the present utility model, comprise change-over valve (1), gear type pump (2) and Power train (3), change-over valve (1) adopts the 3-position-3-way hand change over valve, this change-over valve comprises valve body (1-1), the retracing spring (1-4) of a valve rod (1-2) and valve rod (1-2) end and spring perch (1-5), end cap (1-3) sealing is installed in an end of valve body (1-1), operating handle is equipped with in the outside of valve rod (1-2), tapered spool (7-3) also is housed on the valve body (1-1), the by pass valve (7) that spring (7-2) and valve seat (7-1) are formed, and tapered spool (7-3) is withstood on the outgate by spring (7-2), outgate is communicated with valve body (1-1) in-to-in oil duct, valve body (1-1) has a high pressure oil outlet to link to each other with the hydraulic ram cylinders of trailer by high pressure fuel pipe, the aft end face of gear type pump (2) pump housing (2-1) is connected with fastener with the valve body (1-1) of change-over valve (1), and valve body (1-1) is equipped with seal ring with the pump housing (2-1) end face, advancing of change-over valve (1), oil outlet respectively with gear type pump (2) on height, the low pressure oil pocket communicates, change-over valve (1) in-to-in oil duct and gear type pump (2) are communicated with each other, oil inlet on the gear type pump (2) can directly be communicated with fuel tank, oil inlet on the gear type pump (2) also can adopt oil pipe to be communicated with fuel tank, the front end face of gear type pump (2) is connected with the housing (3-1) of Power train (3) by fastener, and the pump housing (2-1) is equipped with seal ring with housing (3-1) end face, lower part of frame has the base (3-5) of slotted eye, and the slotted eye that bolt passes on the base (3-5) is captiveed joint with foot-operated the pulling of four-wheeled tractor.The power input shaft (2-2) of gear type pump (2) extends in the housing (3-1), and its anterior castellated shaft upper sliding sleeve has the slip cap (3-4) of dental clutch, be connected with clutch handle (4) in the circumferential recess on the slip cap (3-4), anti-wearing liner (3-3) also is housed in the circumferential recess on the slip cap (3-4), on the power take-off shaft that is sleeved on four-wheeled tractor (6) of the fixed cover of dental clutch (3-2) one side, and connect power take-off shaft (6) and fixed cover (3-2) with flat key (5), bolt passes fixed cover (3-2) and is fixedly connected on the power take-off shaft (6), the opposite side of fixed cover (3-2) has the tooth form that matches with slip cap (3-4), operation clutch handle (4), slip cap (3-4) is gone up at the power input shaft (2-2) of gear type pump (2) and is moved axially, tooth form engagement on slip cap (3-4) and fixed cover (3-2), takeoff output then, for the self-unloading of hydraulic pressure tipping bucket provides hydraulic efficiency power unit, at this moment, gear type pump (2) work, high pressure oil is delivered to change-over valve (1), make trailer enter the mode of operation that rises and fall and be fixed on a certain position by hydraulic ram cylinders.When slip cap (3-4) separates with fixed cover (3-2), then cut off takeoff output.This engine installation adopts dental clutch to import, cut off power, and simple in structure, operation is very easy.
The special-purpose integrated-type hydraulic power unit of four-wheeled tractor of the present utility model not only is suitable for the small four-wheel tractor of drive output unit, and is applicable in the hydraulic efficiency pressure system of other vehicle or equipment.
Claims (3)
1, the special-purpose integrated hydraulic engine installation of a kind of four-wheeled tractor, comprise change-over valve (1), gear type pump (2) and Power train (3), it is characterized in that: the sealing of gear type pump (2) aft end face is connected with the change-over valve (1) of carry potential overflow valve (7), the in-to-in oil duct of change-over valve (1) and gear type pump (2) are communicated with each other, the front end face sealing of gear type pump (2) is connected with the housing (3-1) of Power train (3), and the power input shaft (2-2) of gear type pump (2) extends in the housing (3-1) and is connected with a dental clutch.
2, integrated hydraulic engine installation according to claim 1, it is characterized in that: dental clutch is made of slip cap (3-4) and fixed cover (3-2), be connected with power input shaft (2-2) slide key of gear type pump (2) with the slip cap (3-4) that clutch handle (4) joins, fixed cover (3-2) side is sleeved on tractor motive power output shaft (6) and upward and by key (5) connects, and fastening with fastener, the opposite side of fixed cover (3-2) and slip cap (3-4) engagement.
3, integrated hydraulic engine installation according to claim 1 and 2 is characterized in that: the base (3-5) in trough of belt hole is arranged at the bottom of described housing (3-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99227402 CN2363915Y (en) | 1999-02-26 | 1999-02-26 | Integrated hydraulic power device specially adapted for four-wheeled tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99227402 CN2363915Y (en) | 1999-02-26 | 1999-02-26 | Integrated hydraulic power device specially adapted for four-wheeled tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2363915Y true CN2363915Y (en) | 2000-02-16 |
Family
ID=34016918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99227402 Expired - Fee Related CN2363915Y (en) | 1999-02-26 | 1999-02-26 | Integrated hydraulic power device specially adapted for four-wheeled tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2363915Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103538470A (en) * | 2013-10-30 | 2014-01-29 | 四川川龙拖拉机制造有限公司 | Tractor |
| CN104100591A (en) * | 2013-04-01 | 2014-10-15 | 重庆航宇实业有限公司 | Engineering vehicle hydraulic pump valve integrated system |
-
1999
- 1999-02-26 CN CN 99227402 patent/CN2363915Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100591A (en) * | 2013-04-01 | 2014-10-15 | 重庆航宇实业有限公司 | Engineering vehicle hydraulic pump valve integrated system |
| CN103538470A (en) * | 2013-10-30 | 2014-01-29 | 四川川龙拖拉机制造有限公司 | Tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |