CN104912151B - Excavator hydraulic-driven automatic gear shifting control device - Google Patents
Excavator hydraulic-driven automatic gear shifting control device Download PDFInfo
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- CN104912151B CN104912151B CN201510348203.4A CN201510348203A CN104912151B CN 104912151 B CN104912151 B CN 104912151B CN 201510348203 A CN201510348203 A CN 201510348203A CN 104912151 B CN104912151 B CN 104912151B
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- constant displacement
- check valve
- displacement pump
- control device
- pipeline
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- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses such a excavator hydraulic-driven automatic gear shifting control device, it is high to solve production cost existing for existing excavator hydraulic-driven automatic gear shifting control device, the problem of maintenance difficult, the present invention take multiple constant displacement pumps on hydraulic control device respectively with bull power takeoff（2）Multiple planetary gears（9）Short axle drive connection, hydraulic control device is also connected by pipeline with hydraulic motor travel motor.So as to have, production cost and maintenance cost are low, control the less advantage of difficulty.
Description
Technical field
The present invention relates to a kind of excavator, more particularly to a kind of excavator hydraulic-driven automatic gear shifting control device.
Background technology
At present, in the market discloses a kind of excavator hydraulic-driven automatic gear shifting control device, and it is structurally characterized in that：Including
Power takeoff and variable pump, variable pump are connected with power takeoff, and variable pump is connected further through pipeline with running motor, due to becoming
Amount pump is expensive, easily increases the production cost of excavator, meanwhile, when variable pump damages, easily improve maintenance cost.
The content of the invention
It is an object of the invention to provide a kind of production cost and maintenance cost be low, the less excavator hydraulic pressure of control difficulty drives
Dynamic automatic gear shifting control device.
To reach above-mentioned purpose, excavator hydraulic-driven automatic gear shifting control device of the present invention, including by housing, centre tooth
Wheel and multiple planetary gears bull power takeoff formed and the liquid being made up of multiple check valves, multiple unloading valves and multiple constant displacement pumps
Pressure control device, multiple constant displacement pumps on hydraulic control device connect with the multiple planetary short axles transmissions of bull power takeoff respectively
Connect, hydraulic control device is also connected by pipeline with hydraulic motor travel motor.
Central gear is provided with the housing, multiple planetary gears and and centre tooth are evenly equipped with central gear periphery
Take turns engaged transmission, central gear is connected by power transmission shaft with engine or gearbox transmission, multiple planetary gears by short axle and
Multiple constant displacement pumps connection outside housing.
The housing is made up of inner cap and enclosing cover, and enclosing cover is connected by multiple bolts with inner cap, is set in inner cap and outer cover
The hole for being easy to power transmission shaft to pass through is equipped with, covers in inner cap and outside and is evenly equipped with multiple holes for being easy to short axle to pass through, cover setting inside
Have the multiple bolts hole for being easy to inner cap is fixed on engine or gearbox.
First constant displacement pump is connected by pipeline with the first check valve, and the second constant displacement pump is connected by pipeline and the second check valve
Connecing, the 3rd constant displacement pump is connected by pipeline with the 3rd check valve, and the 4th constant displacement pump is connected by pipeline with the 4th check valve, and first
Check valve, the second check valve, the 3rd check valve and the 4th check valve are connected by pipeline with hydraulic motor travel motor；Described first
The first unloading valve is connected between check valve and the first constant displacement pump on pipeline；Between second check valve and the second constant displacement pump
The second unloading valve is connected with pipeline；Between the 3rd check valve and the 3rd constant displacement pump the 3rd off-load is connected with pipeline
Valve.
In first check valve, the second check valve, the 3rd check valve and the 4th check valve and multiple hydraulic motor travel motors
Between pipeline on be connected with overflow valve.
The pressure of 4th constant displacement pump is more than the pressure of the 3rd constant displacement pump, and the pressure of the 3rd constant displacement pump is more than the second constant displacement pump
Pressure, the pressure of the second constant displacement pump are more than the pressure of the first constant displacement pump.
After this structure, due to the bull power takeoff including being made up of housing, central gear and multiple planetary gears
It is multiple on hydraulic control device with the hydraulic control device being made up of multiple check valves, multiple unloading valves and multiple constant displacement pumps
Constant displacement pump is connected with the multiple planetary short axles of bull power takeoff respectively, and hydraulic control device also passes through pipeline and walking
Hydraulic motor connects.So as to realize that production cost and maintenance cost are low, control the less purpose of difficulty.
The present invention is described in further detail with reference to the accompanying drawings and examples for brief description of the drawings.
Accompanying drawing 1 is the schematic perspective view of excavator hydraulic-driven automatic gear shifting control device of the present invention.
Accompanying drawing 2 is the schematic cross-sectional view of excavator hydraulic-driven automatic gear shifting control device bull power takeoff of the present invention.
Accompanying drawing 3 is the schematic diagram of excavator hydraulic-driven automatic gear shifting control device hydraulic control device of the present invention.
In figure：1. the constant displacement pump 5. the 4th of 2. bull power takeoff of engine, 3. first constant displacement pump 4. second
The central gear 11. first of 9. planetary gear of the 3rd constant displacement pump 7. enclosing cover, 8. inner cap of constant displacement pump 6. 10.
The check valve 16. the 3rd of 12. second check valve of check valve, 13. the 4th check valve 15. of overflow valve 14. the 3rd
The unloading valve of 17. second unloading valve of unloading valve 18. first.
Excavator hydraulic-driven automatic gear shifting control device of the present invention shown in embodiment accompanying drawing 1, including by shell
Bull power takeoff 2 that body, central gear 10 and multiple planetary gears 9 form and by multiple check valves, multiple unloading valves and multiple
The hydraulic control device of constant displacement pump composition, multiple constant displacement pumps on hydraulic control device respectively with more than 2 individual planet of bull power takeoff
The short axle drive connection of gear 9, hydraulic control device are also connected by pipeline with hydraulic motor travel motor；Shown in accompanying drawing 1, accompanying drawing 2
Central gear 10 is provided with the housing, multiple planetary gears 9 and and central gear are evenly equipped with the periphery of central gear 10
10 engaged transmissions, central gear 10 are connected by power transmission shaft with engine 1 or gearbox transmission, and multiple planetary gears 9 are by short
Axle is connected with multiple constant displacement pumps outside housing；The housing is made up of inner cap 8 and enclosing cover 7, and enclosing cover 7 passes through multiple bolts and inner cap
8 connections, the hole for being easy to power transmission shaft to pass through is provided with inner cap 8 and enclosing cover 7, multiple be easy to is evenly equipped with inner cap 8 and enclosing cover 7
The hole that short axle passes through, the multiple bolts hole for being easy to inner cap 8 is fixed on engine or gearbox are provided with inner cap 8；It is attached
First constant displacement pump 3 shown in Fig. 3 is connected by pipeline with the first check valve 11, and the second constant displacement pump 4 passes through pipeline and the second check valve
12 connections, the 3rd constant displacement pump 6 are connected by pipeline with the 3rd check valve 15, and the 4th constant displacement pump 5 passes through pipeline and the 4th check valve
14 connections, the first check valve 11, the second check valve 12, the 3rd check valve 15 and the 4th check valve 14 pass through pipeline and walking hydraulic pressure
Motor connects；Between the constant displacement pump 3 of the first check valve 11 and first the first unloading valve 18 is connected with pipeline；Described
The second unloading valve 17 is connected between two check valves 12 and the second constant displacement pump 4 on pipeline；In the 3rd check valve 15 and the 3rd
The 3rd unloading valve 16 is connected between constant displacement pump 6 on pipeline；It is unidirectional in first check valve 11, the second check valve the 12, the 3rd
Overflow valve 13 is connected with pipeline between the check valve 14 of valve 15 and the 4th and multiple hydraulic motor travel motors；4th constant displacement pump 5
Pressure is more than the pressure of the 3rd constant displacement pump 6, and the pressure of the 3rd constant displacement pump 6 is more than the pressure of the second constant displacement pump 4, the second constant displacement pump 4
Pressure be more than the first constant displacement pump 3 pressure.
In use, first transmit the force to central gear 10 by engine or gearbox, central gear 10 transmit the force to
The planetary gear 9 for four different numbers of teeth that central gear 10 engages, the planetary gears 9 of four different numbers of teeth is again by short axle by power
The each constant displacement pump being connected with this is passed to, then hydraulic oil is collaborated to confession after the check valve on each pipeline by each constant displacement pump
To hydraulic motor travel motor, excavator is set to walk.When excavator meets obstructions, the pressure in the first constant displacement pump 3 of minimum power
When reaching setting value, the first unloading valve 18 acts, and the hydraulic oil by the first constant displacement pump 3 is directly back to fuel tank, now, this
Hydraulic fluid flow rate in device diminishes, so that actuating speed slows down, torsion becomes big；When the resistance run into is increasing, this
Device gets rid of pump step by step by above-mentioned implementation, reaches fluid drive purpose.
Claims (6)
1. a kind of excavator hydraulic-driven automatic gear shifting control device, including constant displacement pump, it is characterised in that：Including by housing, in
Heart gear（10）With multiple planetary gears（9）The bull power takeoff of composition（2）With by multiple check valves, multiple unloading valves and multiple
The hydraulic control device of constant displacement pump composition, multiple constant displacement pumps on hydraulic control device respectively with bull power takeoff（2）Multiple rows
Star gear（9）Short axle drive connection, hydraulic control device is also connected by pipeline with hydraulic motor travel motor.
2. excavator hydraulic-driven automatic gear shifting control device according to claim 1, it is characterised in that：In the housing
Inside it is provided with central gear（10）, in central gear（10）Periphery is evenly equipped with multiple planetary gears（9）And and central gear（10）
Engaged transmission, central gear（10）It is connected by power transmission shaft with engine or gearbox transmission, multiple planetary gears（9）By short
Axle is connected with multiple constant displacement pumps outside housing.
3. excavator hydraulic-driven automatic gear shifting control device according to claim 2, it is characterised in that：The housing by
Inner cap（8）And enclosing cover（7）Composition, enclosing cover（7）Pass through multiple bolts and inner cap（8）Connection, in inner cap（8）And enclosing cover（7）On set
The hole for being easy to power transmission shaft to pass through is equipped with, in inner cap（8）And enclosing cover（7）On be evenly equipped with multiple holes for being easy to short axle to pass through, in inner cap
（8）On be provided with and be easy to inner cap（8）The multiple bolts hole being fixed on engine or gearbox.
4. excavator hydraulic-driven automatic gear shifting control device according to claim 1, it is characterised in that：First constant displacement pump
（3）Pass through pipeline and the first check valve（11）Connection, the second constant displacement pump（4）Pass through pipeline and the second check valve（12）Connection, the
Three constant displacement pumps（6）Pass through pipeline and the 3rd check valve（15）Connection, the 4th constant displacement pump（5）Pass through pipeline and the 4th check valve（14）
Connection, the first check valve（11）, the second check valve（12）, the 3rd check valve（15）With the 4th check valve（14）Pass through pipeline and row
Walk hydraulic motor connection；In first check valve（11）With the first constant displacement pump（3）Between be connected with the first unloading valve on pipeline
（18）；In second check valve（12）With the second constant displacement pump（4）Between be connected with the second unloading valve on pipeline（17）；Described
3rd check valve（15）With the 3rd constant displacement pump（6）Between be connected with the 3rd unloading valve on pipeline（16）.
5. excavator hydraulic-driven automatic gear shifting control device according to claim 4, it is characterised in that：Described first
Check valve（11）, the second check valve（12）, the 3rd check valve（15）With the 4th check valve（14）With multiple hydraulic motor travel motors it
Between pipeline on be connected with overflow valve（13）.
6. excavator hydraulic-driven automatic gear shifting control device according to claim 4, it is characterised in that：4th constant displacement pump
（5）Pressure be more than the 3rd constant displacement pump（6）Pressure, the 3rd constant displacement pump（6）Pressure be more than the second constant displacement pump（4）Pressure,
Second constant displacement pump（4）Pressure be more than the first constant displacement pump（3）Pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510348203.4A CN104912151B (en) | 2015-06-23 | 2015-06-23 | Excavator hydraulic-driven automatic gear shifting control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510348203.4A CN104912151B (en) | 2015-06-23 | 2015-06-23 | Excavator hydraulic-driven automatic gear shifting control device |
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| Publication Number | Publication Date |
|---|---|
| CN104912151A CN104912151A (en) | 2015-09-16 |
| CN104912151B true CN104912151B (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510348203.4A Active CN104912151B (en) | 2015-06-23 | 2015-06-23 | Excavator hydraulic-driven automatic gear shifting control device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11230820B2 (en) * | 2019-02-14 | 2022-01-25 | Caterpillar Inc. | Circle drive system for a grading machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205116263U (en) * | 2015-06-23 | 2016-03-30 | 陈光星 | Excavator hydraulic drive automatic speed changing controlling means |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05295763A (en) * | 1992-04-21 | 1993-11-09 | Kubota Corp | Hydraulic circuit for wheel loader with back hoe |
| CN2169735Y (en) * | 1993-08-10 | 1994-06-22 | 王刚 | Planet hydraulic controlled stepeless speed changer |
| JP4444620B2 (en) * | 2003-10-15 | 2010-03-31 | ナブテスコ株式会社 | Automatic transmission mechanism of hydraulic motor |
| JP2007303543A (en) * | 2006-05-11 | 2007-11-22 | Nabtesco Corp | Variable hydraulic motor driving device |
| CN201132973Y (en) * | 2007-11-22 | 2008-10-15 | 鼎盛天工工程机械股份有限公司 | Full-hydraulic moving drive apparatus for digging loader |
| CN104032791B (en) * | 2014-05-28 | 2016-05-04 | 广西柳工机械股份有限公司 | A kind of loading machine is determined variable delivery hydraulic system |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205116263U (en) * | 2015-06-23 | 2016-03-30 | 陈光星 | Excavator hydraulic drive automatic speed changing controlling means |
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Effective date of registration: 20180514 Address after: 364000 Longzhou Industrial Park, 68 industrial West Road, Xinluo District, Longyan, Fujian. Patentee after: LONGYAN CITY WAN TONG MACHINERY CO., LTD. Address before: 364000 Longzhou Industrial Park Xinluo District Longyan city Fujian province Wantong Machinery Co., Ltd. Patentee before: Chen Guangxing |