CN201412325Y - Slippage pump used for gearbox of 2-3.5 ton fork truck - Google Patents
Slippage pump used for gearbox of 2-3.5 ton fork truck Download PDFInfo
- Publication number
- CN201412325Y CN201412325Y CN200920172401XU CN200920172401U CN201412325Y CN 201412325 Y CN201412325 Y CN 201412325Y CN 200920172401X U CN200920172401X U CN 200920172401XU CN 200920172401 U CN200920172401 U CN 200920172401U CN 201412325 Y CN201412325 Y CN 201412325Y
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- pump
- stator
- pump housing
- driving gear
- slippage
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Abstract
The utility model relates to a slippage pump used for gearbox of 2-3.5 ton fork truck. The pump comprises a pump body, a stator, a drive gear, a driven gear, a lining, an oil seal and a sealing ring.The driven gear is an internal gearing toothed ring and is inserted in the pump body. The driving gear is sleeved on a stator shaft. The pump body at the clearance between the driving gear and the driven gear is provided with a crescent-shaped plate. The upper part of the pump body at the left side of the crescent-shaped plate is provided with an oil pressing chamber, and the upper part of the pump body at the right side is provided with an oil suction chamber. The inner hole wall of the driving gear is uniformly distributed with more than two axial grooves. The slippage pump can satisfy the special requirement of 2-3.5t gearbox with a pump. Not only can the use requirement of the gearbox be satisfied by the air displacement, but also an elongated shaft can penetrate the inner hole of thestator for driving the working pump. The slippage pump has the advantages of stable operation, reliable performance, convenient installation and maintenance. The test shows that the slippage pump totally satisfies the use requirement and has no malfunction after strengthening for two hundred hours. The slippage pump further has the advantages of simple structure and low cost which does not exceedthe prior slippage pump.
Description
Technical field
The utility model relates to 2-3.5 ton forklift gearbox slippage pump.
Background technique
Slippage pump is the important component part of hydraudynamic drive fork truck gearbox, and he has three effects: one provides continual pressure oil gives control valve, clutch, realizes the gear control of gearbox; The 2nd, provide a large amount of pressure oil endlessly as powerdriven medium to torque-converters, keep the inner certain pressure of torque-converters simultaneously, prevent cavitation; The 3rd, drive the high temperature that circulating of transmission oil cooled off torque-converters and clutch generation, guarantee the gearbox smooth working.At present, the domestic slippage pump that is used for hydraudynamic drive fork truck gearbox mainly contains three kinds, is respectively the slippage pump of 1-3.5t fork truck gearbox slippage pump, 4-5t fork truck gearbox slippage pump, 5-10t fork truck gearbox.Supporting in order to realize with 2-3.5t fluid power band pump flexible-connection gear box, if use 1～3.5t fork truck gearbox slippage pump, but because slippage pump stator axis external diameter and driving gear internal diameter are too small, slender axles can't pass through; If use the slippage pump of 4～5t or 5～10t fork truck gearbox, though slender axles can pass through, but the slippage pump discharge capacity is excessive, exceeds requiredly more than 50%, can cause waste and produce high heat, gearbox can't proper functioning.
Summary of the invention
In order to solve and 2-3.5t fluid power band pump flexible-connection gear box corresponding problem, the utility model provides a kind of 2-3.5 ton forklift gearbox slippage pump.
Concrete technical solution is as follows:
2-3.5 the ton forklift gearbox comprises the pump housing, stator, driving gear, driven gear, lining, oil sealing and seal ring with slippage pump; Described stator one side is a stator axis, and opposite side is the stator flange plate, and stator axis is a hollow shaft, and connects the stator flange plate; Described driven gear is an internally toothed annulus, and is embedded in the pump housing, and driving gear is set on the stator axis, and lining is set on the stator axis, between the inner hole wall and stator axis of driving gear, and the engagement of the bottom of driving gear and driven gear; Pump housing middle part is provided with through hole, and stator axis is passed pump housing through hole is connected the stator flange plate and the pump housing, and pump housing top is provided with oil road, and its underpart is provided with oil input channel, and oil input channel and oil road all are being communicated with the through hole at pump housing middle part;
The gap location pump housing between described driving gear and the driven gear top is provided with swing link, and pump housing top, described swing link left side is provided with pumping cavity, and its pump housing top, right side is provided with oil sucting cavity;
The inner hole wall of described driving gear is laid with the axial groove more than two.
The oil sucting cavity cross section of described pumping cavity is circular arc.
The inner hole wall of described driving gear is laid with four axial grooves.
The internal diameter of described stator axis is the 24-36 millimeter.
Useful technique effect of the present utility model is embodied in the following aspects:
1, the utility model can satisfy the specific demand of 2～3.5t band pump gearbox, and promptly discharge capacity meets the usage requirement of gearbox, can wear slender axles at stator inner hole again and drive working pump.
2, this slippage pump working stability, reliable performance, installation, maintenance is convenient; Through verification experimental verification, this slippage pump satisfies usage requirement fully, the reflection of 200 hours reinforcement fault-free.
3, the utility model is simple in structure, and is with low cost, and its cost does not exceed existing slippage pump.
Description of drawings
Fig. 1 is the axial sectional structure chart of the utility model,
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment
Embodiment:
Referring to Fig. 1 and Fig. 2,2-3.5 ton forklift gearbox comprises the pump housing 8, stator 3, driving gear 4, driven gear 2, lining 5, oil sealing 7 and seal ring 6 with slippage pump; Stator 3 one sides are stator axis, and opposite side is the stator flange plate, and stator axis is a hollow shaft, and connect the stator flange plate, and the internal diameter of stator axis is 35.5 millimeters; Driven gear 2 is an internally toothed annulus, and is flush-mounted in the pump housing 8, and driving gear 4 is sleeved on the stator axis, and on the stator axis of lining 5 suits, and between the inner hole wall and stator axis of driving gear 4, driving gear 4 meshes with the bottom of driven gear 2; Pump housing middle part is provided with through hole, stator axis is passed pump housing through hole is connected the stator flange plate and the pump housing, pump housing top is provided with oil road, its underpart is provided with oil input channel, oil input channel and oil road all are being communicated with the through hole at pump housing middle part, be set with O type circle 1 on the pump housing outer radial, the stator flange plate is provided with the oil circuit duct.
Be cast with swing link 11 on the gap location pump housing 8 between driving gear 4 and driven gear 2 tops, pump housing top, described swing link 11 left side is provided with pumping cavity 9, its pump housing top, right side is provided with oil sucting cavity 10, see Fig. 2, a pair of like this inside engaged gear is divided into two independently cavitys to pump housing die cavity, again the flange plate dish of stator 3 is pressed on the pump housing 8 surfaces, such two cavitys just are sealed oil sucting cavity 10 that forms sealing respectively and the pumping cavity 9 that seals, and the inner hole wall of driving gear 4 is laid with four axial groove.
During work, the power of motor drives driving gear 4 through the converter pump lining and is rotated counterclockwise, then the air of oil sucting cavity 10 is brought to pumping cavity 9, oil sucting cavity 10 forms negative pressure, then transmission oil is drawn onto oil sucting cavity 10, along with the rotation of gear is brought to pumping cavity 9, oil sucting cavity 10 remains negative pressure to transmission oil again subsequently.Like this transmission oil just from fuel tank through oil sucting cavity 10 to pumping cavity 9 again to parts such as control valve clutches.Converter pump lining place seals with seal ring 6 and oil sealing 7.The pump housing 8 and stator 3 are fixed by bolts on the casing, and the axle head of stator 3 extend into and supports the torque-converters guide wheel in the torque-converters.
Claims (4)
1,2-3.5 ton forklift gearbox slippage pump comprises the pump housing, stator, driving gear, driven gear, lining, oil sealing and seal ring; Described stator one side is a stator axis, and opposite side is the stator flange plate, and stator axis is a hollow shaft, and connects the stator flange plate; Described driven gear is an internally toothed annulus, and is embedded in the pump housing, and driving gear is set on the stator axis, and lining is set on the stator axis, between the inner hole wall and stator axis of driving gear, and the engagement of the bottom of driving gear and driven gear; Pump housing middle part is provided with through hole, and stator axis is passed pump housing through hole is connected the stator flange plate and the pump housing, and pump housing top is provided with oil road, and its underpart is provided with oil input channel, and oil input channel and oil road all are being communicated with the through hole at pump housing middle part, it is characterized in that:
The gap location pump housing between described driving gear and the driven gear top is provided with swing link, and pump housing top, described swing link left side is provided with pumping cavity, and its pump housing top, right side is provided with oil sucting cavity;
The inner hole wall of described driving gear is laid with the axial groove more than two.
2,2-3.5 ton forklift gearbox slippage pump according to claim 1, it is characterized in that: the oil sucting cavity cross section of described pumping cavity is circular arc.
3,2-3.5 ton forklift gearbox slippage pump according to claim 1, it is characterized in that: the inner hole wall of described driving gear is laid with four axial grooves.
4,2-3.5 ton forklift gearbox slippage pump according to claim 1, it is characterized in that: the internal diameter of described stator axis is the 24-36 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920172401XU CN201412325Y (en) | 2009-06-02 | 2009-06-02 | Slippage pump used for gearbox of 2-3.5 ton fork truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920172401XU CN201412325Y (en) | 2009-06-02 | 2009-06-02 | Slippage pump used for gearbox of 2-3.5 ton fork truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201412325Y true CN201412325Y (en) | 2010-02-24 |
Family
ID=41714209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920172401XU Expired - Lifetime CN201412325Y (en) | 2009-06-02 | 2009-06-02 | Slippage pump used for gearbox of 2-3.5 ton fork truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201412325Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958663A (en) * | 2021-10-19 | 2022-01-21 | 江苏汇博机器人技术股份有限公司 | Inner gearing speed reducer of robot |
-
2009
- 2009-06-02 CN CN200920172401XU patent/CN201412325Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958663A (en) * | 2021-10-19 | 2022-01-21 | 江苏汇博机器人技术股份有限公司 | Inner gearing speed reducer of robot |
| CN113958663B (en) * | 2021-10-19 | 2023-12-01 | 江苏汇博机器人技术股份有限公司 | Robot inner gearing speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100224 |
|
| CX01 | Expiry of patent term |