CN201162238Y - Hydrostatic transmission grader - Google Patents
Hydrostatic transmission grader Download PDFInfo
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- CN201162238Y CN201162238Y CN 200820052075 CN200820052075U CN201162238Y CN 201162238 Y CN201162238 Y CN 201162238Y CN 200820052075 CN200820052075 CN 200820052075 CN 200820052075 U CN200820052075 U CN 200820052075U CN 201162238 Y CN201162238 Y CN 201162238Y
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- volume adjustable
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 35
- 230000002706 hydrostatic effect Effects 0.000 title claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 230000009467 reduction Effects 0.000 abstract description 20
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012384 transportation and delivery Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The utility model discloses a hydrostatic transmission grader, which comprises an engine (1), a right volume adjustable oil hydraulic motor (6) connected with the output axle of a right reduction balance box (7) in a driving way, a left volume adjustable oil hydraulic motor (5) connected with the output axle of a left reduction balance box (8) in a driving way, wheels (11, 12, 10 and 9) which are respectively connected with the output axles of the right reduction balance box (7) and the left reduction balance box (8), a right steering wheel (13), a left steering wheel (14), a right steering oil cylinder (15) and a left steering oil cylinder (16). A right volume adjustable oil hydraulic pump (4) and a left volume adjustable oil hydraulic pump (3) are connected with the engine (1) in a driving way, the right volume adjustable oil hydraulic pump (4) is connected with the right volume adjustable oil hydraulic motor (6), and the left volume adjustable oil hydraulic pump (3) is connected with the left volume adjustable oil hydraulic motor (5). The utility model relates to a hydrostatic transmission grader with the advantages of simple driving system, reasonable structure, advanced technical characteristics, convenient maintenance, reliable quality, and low operation and production costs.
Description
Technical field
This patent relates to a kind of land leveller, particularly relates to a kind of hydrostatic drive land leveller.
Background technology
In the prior art, mainly by two big classes, a kind of is mechanical type to the land leveller running gear, and also having a kind of is full hydraulic.
The mechanical type running gear mainly contains two kinds of forms:
A. motor → fluid torque-converter (or clutch) → gearbox → power transmission shaft → drive axle → tandem-driving bogie → wheel
B. motor → gearbox → power transmission shaft → drive axle → tandem-driving bogie → wheel
These two kinds of forms are controlled the travel direction (advance or fall back) and the speed of a motor vehicle conversion of land leveller by the gear that changes gearbox.When realizing the turning driving of land leveller with the symmetrical transmission mechanism that is installed in differential mechanism in the drive axle and main transmission both sides the differential of two side drive wheels and when keeping straight on synchronously.This power transmission, speed change gear are because its drive path is long, and the component of machine of participating in transmission is many, thereby causes complex structure, transmission performance is poor, maintenance difficult, manufacturing cost height, the quality instability is easy to generate fault, is to cause one of low principal element of land leveller coefficient of reliability.
The full hydraulic running gear also has two kinds of forms:
A. motor → hydraulic pump → hydraulic motor → drive axle → tandem-driving bogie → wheel
B. motor → hydraulic pump → hydraulic motor → tandem-driving bogie → wheel
First kind of full hydraulic running gear saved drive disk assemblies such as the torque-converters (perhaps clutch) that very easily breaks down, gearbox, shortened power transmission line, but still utilized the back axle tandem-driving bogie to realize deceleration, the differential of land leveller.This simple in structure, be easy to realize that but long because of its transfer route, mechanical efficiency is low, is not full hydraulic drive truly.
Second kind of technology is to adopt single pump double motor form of structure at present, and running gear changes land leveller travel direction (advance and fall back) and travel speed by the swashplate angle size that changes plunger hydraulic pump.
The utility model content
It is short that technical problem to be solved in the utility model provides a kind of drive path, simple in structure, technical performance advanced person, easy to maintenance, and reliable in quality is produced and the low hydrostatic drive land leveller of use cost.
In order to solve the problems of the technologies described above, the hydrostatic drive land leveller that this patent provides, comprise motor, right variable hydraulic motor that is in transmission connection with the power shaft of right side deceleration tandem-driving bogie and the left variable hydraulic motor that is in transmission connection with the power shaft of left side deceleration tandem-driving bogie, respectively with the wheel that is in transmission connection of the output shaft of right side deceleration tandem-driving bogie and left deceleration tandem-driving bogie, right turn wheel and left steering wheel and right turn oil cylinder and left steering oil cylinder, described motor is connected with right volume adjustable hydraulic pump and left volume adjustable hydraulic pump, described right volume adjustable hydraulic pump is connected with described right variable hydraulic motor, and described left volume adjustable hydraulic pump is connected with described left variable hydraulic motor.
Described right volume adjustable hydraulic pump and left volume adjustable hydraulic pump machinery are connected or are in transmission connection by transfer case machinery parallel connection and described motor.
Be provided with angular transducer or be provided with displacement transducer on described right turn oil cylinder or right turn oil cylinder on vehicle body, described angular transducer or displacement transducer are electrically connected with the control system of described right volume adjustable hydraulic pump and left volume adjustable hydraulic pump.
Be connected with the choke valve piece between described right variable hydraulic motor and the left variable hydraulic motor.
Described right volume adjustable hydraulic pump and left volume adjustable hydraulic pump are the variable piston hydraulic pump; Described right variable hydraulic motor and left variable hydraulic motor are the variable piston hydraulic motor.
Adopt the hydrostatic drive land leveller of technique scheme, right volume adjustable hydraulic pump in the hydrostatic transmissions system is connected with motor by shaft coupling or transfer case with left volume adjustable hydraulic pump, the power shaft of the right variable hydraulic motor that is communicated with right volume adjustable hydraulic pump and left volume adjustable hydraulic pump and the output shaft of left variable hydraulic motor and deceleration tandem-driving bogie is in transmission connection, and the output shaft and the wheel of deceleration tandem-driving bogie are in transmission connection.The size at the swash plate angle of inclination by changing land leveller actuation plunger hydraulic pump respectively changes the turning to of land leveller both sides running wheel (advance and fall back) and rotating speed, realizes the control to land leveller travel direction and speed of a motor vehicle conversion
Right turn wheel and left steering wheel promote to realize turning to by right turn oil cylinder and left steering oil cylinder respectively, angular transducer is used to detect steering angle (perhaps displacement transducer detects and turns to displacement), regulate the discharge capacity of two right volume adjustable hydraulic pumps and left volume adjustable hydraulic pump by detected angle signal (perhaps displacement signal), thereby make two right variable hydraulic motors and left variable hydraulic motor rotating speed slow fast on one side on one side, the differential function when realizing turning to.
When the land leveller straight-line travelling, if two motors cause rotating speed not simultaneously because of differences such as road conditions or loads, the choke valve piece can automatic fine tuning two motor rotary speeds, and its rotating speed is consistent.
The gear speed change system adopts the fluid drive of computer, hydraulic pressure and photoelectric sensing observing and controlling, automatic stepless speed change and change wheel drive torque system.
Motor, turn to, braking, transmission, hydraulic pressure, electrical system adopt real-time monitoring alarm of computer glitch and fault display system.
This patent adopts double pump directly to drive the double motor structure, has removed drive disk assemblies such as complex structure in the prior art, manufacturing cost height, the torque-converters (perhaps clutch) that costs an arm and a leg and very easily break down, gearbox, power transmission shaft, drive axle.Have following advantage:
1. reduce the transmission of power link, thereby reduced fault rate;
2. owing to adopt electrichydraulic control, realize the Automatic Control of land leveller easily;
3. the problem that when proposition of this patent had solved single pump double motor and applies to high-power all-hydraulic land leveller, the hydraulic pressure components and parts were limited, cost an arm and a leg etc.;
4. the proposition of this patent has also solved the restriction of hydraulic type or the high-power land leveller back axle of bridge-type hydraulic-driven;
5. with respect to prior art, the all-wheel powered that is more conducive to land leveller is realized.
In sum, the utility model is that a kind of drive path is short, simple in structure, technical performance advanced person, easy to maintenance, and reliable in quality is produced and the low hydrostatic drive land leveller of use cost.
Description of drawings
Fig. 1 is the system architecture schematic diagram of this patent;
Fig. 2 is the another kind of system architecture schematic diagram of this patent.
The specific embodiment
Referring to Fig. 1, the left variable piston hydraulic pump 3 in the hydrostatic transmissions system is connected with motor 1 by shaft coupling 2, and right variable piston hydraulic pump 4 is cascaded with left variable piston hydraulic pump 3 mechanical types.Right variable piston hydraulic pump 4 and left variable piston hydraulic pump 3 are communicated with right variable piston hydraulic motor 6 and left variable piston hydraulic motor 5 respectively, the output shaft of right variable piston hydraulic motor 6 and left variable piston hydraulic motor 5 is in transmission connection with the power shaft of right fixed shaft type gear reduction tandem-driving bogie 7, left fixed shaft type gear reduction tandem-driving bogie 8 respectively, and the output shaft of right fixed shaft type gear reduction tandem-driving bogie 7, left fixed shaft type gear reduction tandem-driving bogie 8 is in transmission connection with wheel 11,12,9,10 respectively.Right directive wheel 13, left directive wheel 14 promote to realize turning to by right turn oil cylinder 15, left steering oil cylinder 16 respectively, vehicle body is provided with displacement transducer 17, displacement transducer 17 is used for detection and turns to displacement, regulate two pump deliveries by detected displacement signal, thereby make two motor rotary speeds slow fast on one side on one side, the differential function when realizing turning to.Be connected with choke valve piece 18 between right variable hydraulic motor 6 and the left variable hydraulic motor 5, choke valve piece 18 can work as the land leveller straight-line travelling because of two motors because of differences such as road conditions or load cause not two motor rotary speeds of automatic fine tuning simultaneously of rotating speed, its rotating speed is consistent.
This patent walking power transmission route is: motor 1 → shaft coupling 2 → right variable piston hydraulic pump 4 and left variable piston hydraulic pump 3 → right variable piston hydraulic motor 6 and left variable piston hydraulic motor 5 → right fixed shaft type gear reduction tandem-driving bogie 7, left fixed shaft type gear reduction tandem-driving bogie 8 → wheel 11,12,9,10; Promptly drive right variable piston hydraulic pump 4 and 3 work of left variable piston hydraulic pump by motor 1, right variable piston hydraulic motor 6 and left variable piston hydraulic motor 5 drive right fixed shaft type gear reduction tandem-driving bogie 7,8 work of left fixed shaft type gear reduction tandem-driving bogie respectively, right fixed shaft type gear reduction tandem-driving bogie 7, left fixed shaft type gear reduction tandem-driving bogie 8 drive wheel 11,12,9,10 respectively and rotate, thus finished land leveller from motor 1 to wheel 11,12,9,10 power transmission.
The land leveller driving of travelling: the size at the swash plate angle of inclination of the swash plate incline direction by changing right variable piston hydraulic pump 4 and left variable piston hydraulic pump 3 and right variable piston hydraulic motor 6 and left variable piston hydraulic motor 5 realizes the control to land leveller travel direction and speed of a motor vehicle conversion respectively.Right variable piston hydraulic pump 4 and left variable piston hydraulic pump 3 and right variable piston hydraulic motor 6 and left variable piston hydraulic motor 5 be hydraulic transmission element be again that shift speed change (commutation) installs, right fixed shaft type gear reduction tandem-driving bogie 7, left fixed shaft type gear reduction tandem-driving bogie 8 are the tandem-driving bogie of land leveller, are again reducers.
When the land leveller straight-line travelling, if two motors cause rotating speed not simultaneously because of differences such as road conditions or loads, choke valve piece 18 can automatic fine tuning two motor rotary speeds, and its rotating speed is consistent.
Referring to Fig. 2, motor 1 is connected with transfer case 18 by shaft coupling 2, and left variable piston hydraulic pump 3 in the hydrostatic transmissions system and right variable piston hydraulic pump 4 are connected in parallel by transfer case 18 with variable piston hydraulic pump 3 mechanical types.Right variable piston hydraulic pump 4 and left variable piston hydraulic pump 3 are communicated with right variable piston hydraulic motor 6 and left variable piston hydraulic motor 5 respectively, the output shaft of right variable piston hydraulic motor 6 and left variable piston hydraulic motor 5 is in transmission connection with the power shaft of right fixed shaft type gear reduction tandem-driving bogie 7, left fixed shaft type gear reduction tandem-driving bogie 8 respectively, and the output shaft of right fixed shaft type gear reduction tandem-driving bogie 7, left fixed shaft type gear reduction tandem-driving bogie 8 is in transmission connection with wheel 11,12,9,10 respectively.Right directive wheel 13, left directive wheel 14 promote to realize turning to by right turn oil cylinder 15, left steering oil cylinder 16 respectively, left steering oil cylinder 16 is provided with angular transducer 19, angular transducer 19 is used to detect steering angle, regulate two pump deliveries by detected angle signal, thereby make two motor rotary speeds slow fast on one side on one side, the differential function when realizing turning to.Be connected with choke valve piece 18 between right variable hydraulic motor 6 and the left variable hydraulic motor 5, choke valve piece 18 can work as the land leveller straight-line travelling because of two motors because of differences such as road conditions or load cause not two motor rotary speeds of automatic fine tuning simultaneously of rotating speed, its rotating speed is consistent.
This patent adopts hydrostatic technology, no gearbox, and drive axle-free, no drive axle transmission, land leveller is achieved full wheel drive and stepless fluid drive is handled, thereby can improve the tractive force of land leveller greatly and use operating characteristics.Owing to adopted double pump, double motor structure, system circuit has increased choke valve, thereby has solved slippage and the trackslip problem of two side drive wheels under the different travel conditions of the land leveller situation different with ground attaching coefficient in the existing land leveller technology effectively.
Claims (9)
1, a kind of hydrostatic drive land leveller, comprise motor (1), right variable hydraulic motor (6) that is in transmission connection with the power shaft of right side deceleration tandem-driving bogie (7) and the left variable hydraulic motor (5) that is in transmission connection with the power shaft of left side deceleration tandem-driving bogie (8), respectively with the wheel (11 that is in transmission connection of the output shaft of right side deceleration tandem-driving bogie (7) and left deceleration tandem-driving bogie (8), 12,10,9), right turn wheel (13) and left steering wheel (14) and right turn oil cylinder (15) and left steering oil cylinder (16), it is characterized in that: described motor (1) is connected with right volume adjustable hydraulic pump (4) and left volume adjustable hydraulic pump (3), described right volume adjustable hydraulic pump (4) is connected with described right variable hydraulic motor (6), and described left volume adjustable hydraulic pump (3) is connected with described left variable hydraulic motor (5).
2, hydrostatic drive land leveller according to claim 1 is characterized in that: described right volume adjustable hydraulic pump (4) and left volume adjustable hydraulic pump (3) machinery are connected or are in transmission connection by mechanical parallel connection of transfer case (18) and described motor (1).
3, hydrostatic drive land leveller according to claim 1 and 2, it is characterized in that: be provided with angular transducer (19) or be provided with displacement transducer (17) on described right turn oil cylinder (15) or right turn oil cylinder (16) on vehicle body, described angular transducer (19) or displacement transducer (17) are electrically connected with the control system of described right volume adjustable hydraulic pump (4) and left volume adjustable hydraulic pump (3).
4, hydrostatic drive land leveller according to claim 1 and 2 is characterized in that: be connected with choke valve piece (18) between described right variable hydraulic motor (6) and the left variable hydraulic motor (5).
5, hydrostatic drive land leveller according to claim 3 is characterized in that: be connected with choke valve piece (18) between described right variable hydraulic motor (6) and the left variable hydraulic motor (5).
6, hydrostatic drive land leveller according to claim 1 and 2 is characterized in that: described right volume adjustable hydraulic pump (4) and left volume adjustable hydraulic pump (3) are the variable piston hydraulic pump; Described right variable hydraulic motor (6) and left variable hydraulic motor (5) are the variable piston hydraulic motor.
7, hydrostatic drive land leveller according to claim 3 is characterized in that: described right volume adjustable hydraulic pump (4) and left volume adjustable hydraulic pump (3) are the variable piston hydraulic pump; Described right variable hydraulic motor (6) and left variable hydraulic motor (5) are the variable piston hydraulic motor.
8, hydrostatic drive land leveller according to claim 4 is characterized in that: described right volume adjustable hydraulic pump (4) and left volume adjustable hydraulic pump (3) are the variable piston hydraulic pump; Described right variable hydraulic motor (6) and left variable hydraulic motor (5) are the variable piston hydraulic motor.
9, hydrostatic drive land leveller according to claim 5 is characterized in that: described right volume adjustable hydraulic pump (4) and left volume adjustable hydraulic pump (3) are the variable piston hydraulic pump; Described right variable hydraulic motor (6) and left variable hydraulic motor (5) are the variable piston hydraulic motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820052075 CN201162238Y (en) | 2008-01-11 | 2008-01-11 | Hydrostatic transmission grader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820052075 CN201162238Y (en) | 2008-01-11 | 2008-01-11 | Hydrostatic transmission grader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201162238Y true CN201162238Y (en) | 2008-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820052075 Expired - Fee Related CN201162238Y (en) | 2008-01-11 | 2008-01-11 | Hydrostatic transmission grader |
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| Country | Link |
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| CN (1) | CN201162238Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107493711A (en) * | 2017-10-10 | 2017-12-22 | 王建 | A kind of farm power exports machine |
| CN110001390A (en) * | 2019-04-24 | 2019-07-12 | 山东临工工程机械有限公司 | A kind of transmission system and control method |
-
2008
- 2008-01-11 CN CN 200820052075 patent/CN201162238Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107493711A (en) * | 2017-10-10 | 2017-12-22 | 王建 | A kind of farm power exports machine |
| CN110001390A (en) * | 2019-04-24 | 2019-07-12 | 山东临工工程机械有限公司 | A kind of transmission system and control method |
| CN110001390B (en) * | 2019-04-24 | 2024-02-02 | 山东临工工程机械有限公司 | Transmission system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE + TECHNOL Free format text: FORMER NAME: CHANG SHA ZOOMLION HEAVY INDUSTRY SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Yuelu District City, Hunan province 410205 Changsha Lugu Road No. 677 ZOOMLION Lugu Industrial Park Patentee after: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Address before: Yuelu District City, Hunan province 410205 Changsha Lugu Road No. 677 ZOOMLION Lugu Industrial Park Patentee before: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20160111 |