CN201132973Y - Full-hydraulic moving drive apparatus for digging loader - Google Patents
Full-hydraulic moving drive apparatus for digging loader Download PDFInfo
- Publication number
- CN201132973Y CN201132973Y CNU2007200979370U CN200720097937U CN201132973Y CN 201132973 Y CN201132973 Y CN 201132973Y CN U2007200979370 U CNU2007200979370 U CN U2007200979370U CN 200720097937 U CN200720097937 U CN 200720097937U CN 201132973 Y CN201132973 Y CN 201132973Y
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- variable
- motor
- flow pump
- variable flow
- displacement motor
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Abstract
The utility model provides a full hydraulic walk drive unit of an excavation loading machine, which is characterized in that an engine is positioned on a rack of the loading machine, at the front end of the rack two steerable front wheels are positioned and at the back end of the rack a rear axle is positioned, two rear wheels are positioned at the two output ends of the rear axle. The output end of the engine is connected with a variable flow pump at the end of which is connected in series with a braking pump. A constant displacement motor and a variable motor are respectively positioned at the input end of the rear axle, the input ends of the constant displacement motor and the variable motor are respectively connected with the output end of the variable flow pump through pipelines, a magnetic valve with an electric shift is positioned between the variable flow pump and the variable motor, and a brake valve connected with a brake pedal is positioned at the control end of the variable flow pump, thereby the walk drive unit replaces a hydraulic gearbox of the original excavation loading machine(or a synchronous mechanical transmission), greatly simplifies the structure and has the advantages of simple operation, good reliability, infinite variable speed, high drive efficiency and 20 percent of fuel saving; the walk drive unit further has the advantage of good field of view of operation..
Description
Technical field
The utility model relates to a kind of loader-digger that is used for road construction, especially a kind of all-hydraulic travel driving unit of loader-digger.
Background technology
Loader-digger is widely used in road construction.The travel driving unit structure of known loader-digger is: on the frame of loader-digger motor is installed, the front end of frame is equipped with and turns to front vehicle wheel, the rear end of frame is equipped with back axle, at back axle two outputs two rear wheels are installed, between the input of the output of motor and back axle, hydraulic transmission box (or synchronization mechanism formula gearbox) are installed.This travel driving unit complex structure, operation inconvenience, efficient is low; In addition, because the output shaft of the input status requirement motor of hydraulic transmission box (or synchronization mechanism formula gearbox) can not be too low, thereby make the installation site of motor higher, influence driver's the operation visual field.
Summary of the invention
The utility model provides a kind of simple in structure, easy and simple to handle, all-hydraulic travel driving unit that efficient is high for solving the technical problem that exists in the known technology.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
A kind of all-hydraulic travel driving unit of loader-digger, the frame that comprises loader, rack-mounted motor, be installed in the front vehicle wheel that turns to of frame front end, be installed in the back axle of frame rear end, be installed in two rear wheels of back axle two outputs, and the drive unit that is connected with the back axle input is formed, described drive unit is a variable flow pump that is connected with the motor output, the afterbody of variable flow pump is serially connected with brake pump, the input of back axle is separately installed with fixed displacement motor and variable displacement motor, the input of fixed displacement motor and variable displacement motor is connected the changeable flow delivery side of pump respectively by pipeline, the electromagnetic valve of automatically controlled gear shift is installed between variable flow pump and the variable displacement motor, and the control end of variable flow pump is equipped with the brake valve that is connected with brake pedal.
Advantage and the good effect that the utlity model has are:
Because the output at motor is equipped with variable flow pump, the changeable flow delivery side of pump is connected with and direct-connected fixed displacement motor of back axle and variable displacement motor by pipeline, replaced hydraulic transmission box (or synchronization mechanism formula gearbox), thereby simplify the structure greatly, not only easy and simple to handle, good reliability but also can realize infinitely variable speeds, improve transmission efficiency, can save fuel oil 20%; In addition, owing to save hydraulic transmission box or synchronization mechanism gearbox, but make the motor low level install, solved the bad difficult problem in the loader-digger loading operation visual field; Advantage simple in structure, that be easy to make that the utility model also has.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a hydraulic schematic diagram of the present utility model.
Among the figure: 1, motor; 2, variable flow pump; 3, brake pump; 4, frame; 5, variable displacement motor; 6, fixed displacement motor; 7, back axle; 8, rear wheel; 9, turn to front vehicle wheel; 10, brake valve; 11, electromagnetic valve.
The specific embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1 and Fig. 2, on the frame 4 of loader motor 1 is installed, be equipped with two at the frame front end and turn to front vehicle wheel 9, back axle 7 is installed, two rear wheels 8 are installed at back axle two outputs at frame rear end.The drive unit of rear wheel is a variable flow pump 2 that is connected with the motor output, the afterbody of variable flow pump is serially connected with brake pump 3, the input of back axle is separately installed with fixed displacement motor 6 and variable displacement motor 5, the input of fixed displacement motor and variable displacement motor is connected the changeable flow delivery side of pump respectively by pipeline, the electromagnetic valve 11 of automatically controlled gear shift is installed between variable flow pump and the variable displacement motor, and the control end of variable flow pump is equipped with the brake valve 10 that is connected with brake pedal.Replaced the hydraulic transmission box (or synchronization mechanism formula gearbox) of former loader-digger like this, thereby simplified the structure greatly, not only easy and simple to handle, good reliability but also can realize infinitely variable speeds improves transmission efficiency, can save fuel oil 20%; In addition, owing to save hydraulic transmission box or synchronization mechanism gearbox, but make the motor low level install, solved the bad difficult problem in the loader-digger loading operation visual field; Advantage simple in structure, that be easy to make that the utility model also has.
Claims (1)
1. the all-hydraulic travel driving unit of a loader-digger, the frame that comprises loader, rack-mounted motor, be installed in the front vehicle wheel that turns to of frame front end, be installed in the back axle of frame rear end, be installed in two rear wheels of back axle two outputs, and the drive unit that is connected with the back axle input is formed, it is characterized in that: described drive unit is a variable flow pump that is connected with the motor output, the afterbody of variable flow pump is serially connected with brake pump, the input of back axle is separately installed with fixed displacement motor and variable displacement motor, the input of fixed displacement motor and variable displacement motor is connected the changeable flow delivery side of pump respectively by pipeline, the electromagnetic valve of automatically controlled gear shift is installed between variable flow pump and the variable displacement motor, and the control end of variable flow pump is equipped with the brake valve that is connected with brake pedal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200979370U CN201132973Y (en) | 2007-11-22 | 2007-11-22 | Full-hydraulic moving drive apparatus for digging loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200979370U CN201132973Y (en) | 2007-11-22 | 2007-11-22 | Full-hydraulic moving drive apparatus for digging loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201132973Y true CN201132973Y (en) | 2008-10-15 |
Family
ID=40061246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200979370U Expired - Fee Related CN201132973Y (en) | 2007-11-22 | 2007-11-22 | Full-hydraulic moving drive apparatus for digging loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201132973Y (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 |
-
2007
- 2007-11-22 CN CNU2007200979370U patent/CN201132973Y/en not_active Expired - Fee Related
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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DINGSHENG HEAVY INDUSTRY MACHINERY CO., LTD. Free format text: FORMER OWNER: DINGSHENG TIANGONG CONSTRUCTION MACHINERY CO., LTD. Effective date: 20110916 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110916 Address after: 300384 Tianjin New Technology Industrial Park Haitai Huayuan Industrial Zone No. 5 North Street Patentee after: Dingsheng Heavy Industry Machinery Co., Ltd. Address before: 300384 Tianjin New Technology Industrial Park Haitai Huayuan Industrial Zone No. 5 North Street Patentee before: Dingsheng Tiangong Construction Machinery Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20131122 |