CN205116263U - Excavator hydraulic drive automatic speed changing controlling means - Google Patents
Excavator hydraulic drive automatic speed changing controlling means Download PDFInfo
- Publication number
- CN205116263U CN205116263U CN201520432398.6U CN201520432398U CN205116263U CN 205116263 U CN205116263 U CN 205116263U CN 201520432398 U CN201520432398 U CN 201520432398U CN 205116263 U CN205116263 U CN 205116263U
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- CN
- China
- Prior art keywords
- way valve
- constant displacement
- displacement pump
- pipeline
- control device
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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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses an excavator hydraulic drive automatic speed changing controlling means, it is high for solving the manufacturing cost who has had excavator hydraulic drive automatic speed changing controlling means to exist, maintain difficult problem, the utility model discloses take a plurality of constant delivery pumps on the hydraulic control device to be connected with a plurality of planetary gear's of bull power takeoff (2) (9) minor axis transmission respectively, hydraulic control device still is connected with walking hydraulic motor through the pipeline. Thereby it hangs down, controls the less advantage of the degree of difficulty to have manufacturing cost and cost of maintenance.
Description
Technical field
The utility model relates to a kind of excavator, particularly relates to a kind of excavator hydraulic-driven automatic gear shifting control device.
Background technology
At present, market discloses a kind of excavator hydraulic-driven automatic gear shifting control device, its design feature is: comprise power takeoff and variable pump, and variable pump and power takeoff are in transmission connection, and variable pump is connected with running motor by pipeline again, due to, variable pump price is more expensive, easily increases the cost of production of excavator, simultaneously, when variable pump damages, easily improve maintenance cost.
Summary of the invention
The purpose of this utility model is to provide a kind of cost of production and maintenance cost is low, control the less excavator hydraulic-driven automatic gear shifting control device of difficulty.
For achieving the above object, the utility model excavator hydraulic-driven automatic gear shifting control device, comprise the bull power takeoff be made up of housing, central gear and multiple planetary gear and the hydraulic control device be made up of multiple one way valve, multiple unloader and multiple constant displacement pump, multiple planetary minor axis is in transmission connection multiple constant displacement pumps on hydraulic control device with bull power takeoff respectively, and hydraulic control device is also connected with hydraulic motor travel motor by pipeline.
Central gear is provided with in described housing, central gear periphery be evenly equipped with multiple planetary gear and with central gear engaged transmission, central gear is connected with motor or gearbox transmission by power transmission shaft, and multiple planetary gear is connected with the multiple constant displacement pumps outside housing by minor axis.
Described housing is made up of inner cap and enclosing cover, enclosing cover is connected with inner cap by multiple bolt, at inner cap with cover the hole being provided with and being convenient to power transmission shaft and passing outward, at inner cap with cover and be evenly equipped with multiple hole be convenient to minor axis and passed, cover interior the multiple bolts hole being provided with and being convenient to be fixed on by inner cap on motor or gearbox outward.
First constant displacement pump is connected with the first one way valve by pipeline, second constant displacement pump is connected with the second one way valve by pipeline, 3rd constant displacement pump is connected with the 3rd one way valve by pipeline, 4th constant displacement pump is connected with the 4th one way valve by pipeline, and the first one way valve, the second one way valve, the 3rd one way valve are connected with hydraulic motor travel motor by pipeline with the 4th one way valve; Between described first one way valve and the first constant displacement pump, pipeline is connected with the first unloader; Between described second one way valve and the second constant displacement pump, pipeline is connected with the second unloader; Between described 3rd one way valve and the 3rd constant displacement pump, pipeline is connected with the 3rd unloader.
Described first one way valve, the second one way valve, the 3rd one way valve and the pipeline between the 4th one way valve and multiple hydraulic motor travel motor are connected with overflow valve.
The pressure of the 4th constant displacement pump is greater than the pressure of the 3rd constant displacement pump, and the pressure of the 3rd constant displacement pump is greater than the pressure of the second constant displacement pump, and the pressure of the second constant displacement pump is greater than the pressure of the first constant displacement pump.
After adopting this structure, owing to comprising the bull power takeoff be made up of housing, central gear and multiple planetary gear and the hydraulic control device be made up of multiple one way valve, multiple unloader and multiple constant displacement pump, multiple planetary minor axis is in transmission connection multiple constant displacement pumps on hydraulic control device with bull power takeoff respectively, and hydraulic control device is also connected with hydraulic motor travel motor by pipeline.Thus realize cost of production and maintenance cost is low, control the less object of difficulty.
accompanying drawing explanationbelow in conjunction with drawings and Examples, the utility model is described in further detail.
Accompanying drawing 1 is the schematic perspective view of the utility model excavator hydraulic-driven automatic gear shifting control device.
Accompanying drawing 2 is cross-sectional schematic of the utility model excavator hydraulic-driven automatic gear shifting control device bull power takeoff.
Accompanying drawing 3 is schematic diagrames of the utility model excavator hydraulic-driven automatic gear shifting control device hydraulic control device.
In figure: 1. motor 2. bull power takeoff 3. first constant displacement pump 4. second constant displacement pump 5. the 4th constant displacement pump 6. the 3rd constant displacement pump 7. enclosing cover 8. inner cap 9. planetary gear 10. central gear 11. first one way valve 12. second one way valve 13. overflow valve 14. the 4th one way valve 15. the 3rd one way valve 16. the 3rd unloader 17. second unloader 18. first unloader.
detailed description of the inventionthe hydraulic-driven of the utility model excavator shown in accompanying drawing 1 automatic gear shifting control device, comprise the bull power takeoff 2 be made up of housing, central gear 10 and multiple planetary gear 9 and the hydraulic control device be made up of multiple one way valve, multiple unloader and multiple constant displacement pump, multiple constant displacement pumps on hydraulic control device are in transmission connection with the minor axis of bull power takeoff more than 2 planetary gear 9 respectively, and hydraulic control device is also connected with hydraulic motor travel motor by pipeline; Accompanying drawing 1, accompanying drawing 2 be shown in described housing and be provided with central gear 10, central gear 10 periphery be evenly equipped with multiple planetary gear 9 and with central gear 10 engaged transmission, central gear 10 is connected with motor 1 or gearbox transmission by power transmission shaft, and multiple planetary gear 9 is connected with the multiple constant displacement pumps outside housing by minor axis; Described housing is made up of inner cap 8 and enclosing cover 7, enclosing cover 7 is connected with inner cap 8 by multiple bolt, inner cap 8 and enclosing cover 7 are provided with the hole be convenient to power transmission shaft and passed, inner cap 8 and enclosing cover 7 are evenly equipped with multiple hole be convenient to minor axis and passed, inner cap 8 is provided with the multiple bolts hole being convenient to be fixed on by inner cap 8 on motor or gearbox; Shown in accompanying drawing 3, the first constant displacement pump 3 is connected with the first one way valve 11 by pipeline, second constant displacement pump 4 is connected with the second one way valve 12 by pipeline, 3rd constant displacement pump 6 is connected with the 3rd one way valve 15 by pipeline, 4th constant displacement pump 5 is connected with the 4th one way valve 14 by pipeline, and the first one way valve 11, second one way valve 12, the 3rd one way valve 15 are connected with hydraulic motor travel motor by pipeline with the 4th one way valve 14; Between described first one way valve 11 and the first constant displacement pump 3, pipeline is connected with the first unloader 18; Between described second one way valve 12 and the second constant displacement pump 4, pipeline is connected with the second unloader 17; Between described 3rd one way valve 15 and the 3rd constant displacement pump 6, pipeline is connected with the 3rd unloader 16; Described first one way valve 11, second one way valve 12, the 3rd one way valve 15 and the pipeline between the 4th one way valve 14 and multiple hydraulic motor travel motor are connected with overflow valve 13; The pressure of the 4th constant displacement pump 5 is greater than the pressure of the 3rd constant displacement pump 6, and the pressure of the 3rd constant displacement pump 6 is greater than the pressure of the second constant displacement pump 4, and the pressure of the second constant displacement pump 4 is greater than the pressure of the first constant displacement pump 3.
During use, first by motor or gearbox, power is passed to central gear 10, power is passed to the planetary gear 9 from four different numbers of teeth that central gear 10 engages by central gear 10, power is passed to each constant displacement pump connected therewith by the planetary gear 9 of four different numbers of teeth again by minor axis, by each constant displacement pump, hydraulic oil is collaborated to supply hydraulic motor travel motor after the one way valve on each pipeline again, excavator is walked.When excavator meets obstructions, when the pressure in the first constant displacement pump 3 of minimum power reaches setting value, the first unloader 18 action, make the hydraulic oil through the first constant displacement pump 3 directly be back to fuel tank, now, the hydraulic fluid flow rate in this device diminishes, thus actuating speed is slowed down, torsion becomes large; When the resistance run into is increasing, this device gets rid of pump step by step by above-mentioned implementation, reaches fluid drive object.
Claims (6)
1. an excavator hydraulic-driven automatic gear shifting control device, it is characterized in that: comprise the bull power takeoff (2) be made up of housing, central gear (10) and multiple planetary gear (9) and the hydraulic control device be made up of multiple one way valve, multiple unloader and multiple constant displacement pump, multiple constant displacement pumps on hydraulic control device are in transmission connection with the minor axis of bull power takeoff (2) multiple planetary gear (9) respectively, and hydraulic control device is also connected with hydraulic motor travel motor by pipeline.
2. excavator hydraulic-driven automatic gear shifting control device according to claim 1, it is characterized in that: in described housing, be provided with central gear (10), central gear (10) periphery be evenly equipped with multiple planetary gear (9) and with central gear (10) engaged transmission, central gear (10) is connected with motor or gearbox transmission by power transmission shaft, and multiple planetary gear (9) is connected with the multiple constant displacement pumps outside housing by minor axis.
3. excavator hydraulic-driven automatic gear shifting control device according to claim 2, it is characterized in that: described housing is made up of inner cap (8) and enclosing cover (7), enclosing cover (7) is connected with inner cap (8) by multiple bolt, inner cap (8) and enclosing cover (7) are provided with the hole be convenient to power transmission shaft and passed, inner cap (8) and enclosing cover (7) are evenly equipped with multiple hole be convenient to minor axis and passed, inner cap (8) is provided with the multiple bolts hole being convenient to be fixed on by inner cap (8) on motor or gearbox.
4. excavator hydraulic-driven automatic gear shifting control device according to claim 1, it is characterized in that: the first constant displacement pump (3) is connected with the first one way valve (11) by pipeline, second constant displacement pump (4) is connected with the second one way valve (12) by pipeline, 3rd constant displacement pump (6) is connected with the 3rd one way valve (15) by pipeline, 4th constant displacement pump (5) is connected with the 4th one way valve (14) by pipeline, first one way valve (11), second one way valve (12), 3rd one way valve (15) is connected with hydraulic motor travel motor by pipeline with the 4th one way valve (14), between described first one way valve (11) and the first constant displacement pump (3), pipeline is connected with the first unloader (18), between described second one way valve (12) and the second constant displacement pump (4), pipeline is connected with the second unloader (17), between described 3rd one way valve (15) and the 3rd constant displacement pump (6), pipeline is connected with the 3rd unloader (16).
5. excavator hydraulic-driven automatic gear shifting control device according to claim 4, is characterized in that: on described first one way valve (11), the second one way valve (12), the 3rd one way valve (15) and the pipeline between the 4th one way valve (14) and multiple hydraulic motor travel motor, be connected with overflow valve (13).
6. excavator hydraulic-driven automatic gear shifting control device according to claim 4, it is characterized in that: the pressure of the 4th constant displacement pump (5) is greater than the pressure of the 3rd constant displacement pump (6), the pressure of the 3rd constant displacement pump (6) is greater than the pressure of the second constant displacement pump (4), and the pressure of the second constant displacement pump (4) is greater than the pressure of the first constant displacement pump (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520432398.6U CN205116263U (en) | 2015-06-23 | 2015-06-23 | Excavator hydraulic drive automatic speed changing controlling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520432398.6U CN205116263U (en) | 2015-06-23 | 2015-06-23 | Excavator hydraulic drive automatic speed changing controlling means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205116263U true CN205116263U (en) | 2016-03-30 |
Family
ID=55571883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520432398.6U Withdrawn - After Issue CN205116263U (en) | 2015-06-23 | 2015-06-23 | Excavator hydraulic drive automatic speed changing controlling means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205116263U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912151A (en) * | 2015-06-23 | 2015-09-16 | 陈光星 | Hydraulic-drive type automatic speed changing control device of excavator |
-
2015
- 2015-06-23 CN CN201520432398.6U patent/CN205116263U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912151A (en) * | 2015-06-23 | 2015-09-16 | 陈光星 | Hydraulic-drive type automatic speed changing control device of excavator |
| CN104912151B (en) * | 2015-06-23 | 2017-11-17 | 陈光星 | Excavator hydraulic-driven automatic gear shifting control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160330 Effective date of abandoning: 20171117 |
|
| AV01 | Patent right actively abandoned |