CN207880011U - A kind of contiuously variable transmission Hydraulic Power Transmission System stopped convenient for middle position - Google Patents
A kind of contiuously variable transmission Hydraulic Power Transmission System stopped convenient for middle position Download PDFInfo
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- CN207880011U CN207880011U CN201721531124.8U CN201721531124U CN207880011U CN 207880011 U CN207880011 U CN 207880011U CN 201721531124 U CN201721531124 U CN 201721531124U CN 207880011 U CN207880011 U CN 207880011U
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- safety valve
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- pump
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Abstract
The utility model belongs to contiuously variable transmission Hydraulic Power Transmission System technical field,To solve contiuously variable transmission when realizing the stopping of mechanical movement,Position parking is relatively difficult in being found during manipulation of physical,The technical issues of needing repeated multiple times ability stably stop,Provide a kind of contiuously variable transmission Hydraulic Power Transmission System stopped convenient for middle position,Including slippage pump,Variable pump,Advance safety valve,Retreat safety valve and fixed displacement motor,The A hydraulic fluid ports of variable pump are connected with the oil inlet of the A hydraulic fluid ports of fixed displacement motor and advance safety valve respectively,The B hydraulic fluid ports of fixed displacement motor are connected with the B hydraulic fluid ports of variable pump,The oil outlet of advance safety valve is connected with hydraulic oil container,The oil inlet that the B hydraulic fluid ports of variable pump retreat safety valve is connected,The oil outlet for retreating safety valve is connected with hydraulic oil container,Hydraulic oil container is connected with the oil outlet of advance safety valve and retrogressing safety valve respectively by slippage pump.The utility model is simple in structure, can improve the stopping maneuvering performance of machine using the utility model.
Description
Technical field
The utility model belongs to contiuously variable transmission Hydraulic Power Transmission System technical field, and in particular to one kind stops convenient for middle position
Contiuously variable transmission Hydraulic Power Transmission System.
Background technology
Contiuously variable transmission is a kind of hydraulic transmission of variable pump+fixed displacement motor, has compact-sized, hydraulic drive tune
Speed is convenient, speed adjustable range is big, avoidable the features such as causing engine misses greatly because of load, is widely used in a variety of walking machines.
Contiuously variable transmission is manipulated to zero-bit to realize the stopping of mechanical movement by the speed disk of variable pump, as long as theoretically lever mechanism
Speed disk is pushed middle position to can be realized, position parking is more difficult in actually finding in manipulation process, will be repeatedly in manipulation
Repeatedly ability stably stop, makes troubles to manipulation.
Utility model content
The utility model is to solve contiuously variable transmission when realizing the stopping of mechanical movement, is found during manipulation of physical
The parking of middle position is relatively difficult, need it is repeated multiple times could stably stop by technical problem, provide and a kind of stop convenient for middle position
Contiuously variable transmission Hydraulic Power Transmission System.
The technical solution adopted in the utility model is as follows：
A kind of contiuously variable transmission Hydraulic Power Transmission System stopped convenient for middle position, including slippage pump, variable pump, safety of advancing
Valve retreats safety valve and fixed displacement motor, the A hydraulic fluid ports of the variable pump respectively with the A hydraulic fluid ports of fixed displacement motor and advance safety valve
Oil inlet is connected, and the B hydraulic fluid ports of the fixed displacement motor are connected with the B hydraulic fluid ports of variable pump, the oil outlet and liquid of the advance safety valve
Pressure oil case is connected, and the B hydraulic fluid ports of the variable pump are connected with the oil inlet for retreating safety valve, the oil outlet of the retrogressing safety valve and
Hydraulic oil container is connected, and one end of the slippage pump is connected with hydraulic oil container, and the other end is safe with advance safety valve and retrogressing respectively
The oil outlet of valve is connected.
The advance safety valve is overflow valve I, and the retrogressing safety valve is formed in parallel by overflow valve II and throttle orifice.
It is equipped with repairing filter between the oil outlet of the slippage pump and advance safety valve and retrogressing safety valve.
The beneficial effects of the utility model：The utility model is simple in structure, and the utility model passes through in contiuously variable transmission
A safety valve is respectively provided on forward-reverse side, the pressure of hydraulic system is beaten when reaching 35MPa when playing forward or backward
The effect for opening pressure release ensures that the pressure of hydraulic system is no more than 35Mpa, protects hydraulic system nonoverload.Simultaneously in overflow valve II
A upper small throttle orifice in parallel, when retreating, flow is small, and the discharge capacity hour of corresponding speed disk, hydraulic oil can be flowed out from throttle orifice,
It will not make machine movement, to accordingly improve the stopping maneuvering performance of machine.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
In figure：1- slippage pumps, 2- variable pumps, 3- advance safety valves, 4- retreat safety valve, 5- fixed displacement motors, 6- hydraulic oil
Case, 7- repairing filters, 31- overflow valves I, 41- overflow valve II, 42- throttle orifice.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of contiuously variable transmission Hydraulic Power Transmission System stopped convenient for middle position, including slippage pump 1, variable pump
2, advance safety valve 3, retreat safety valve 4 and fixed displacement motor 5, two hydraulic fluid ports of the variable pump 2 are respectively A hydraulic fluid ports and B hydraulic fluid ports,
Two hydraulic fluid ports of the fixed displacement motor are respectively A hydraulic fluid ports and B hydraulic fluid ports, the A hydraulic fluid ports of the variable pump 2 respectively with fixed displacement motor 5
A hydraulic fluid ports are connected with the oil inlet of advance safety valve 3, and the B hydraulic fluid ports of the fixed displacement motor 5 are connected with the B hydraulic fluid ports of variable pump 2, described
The oil outlet of advance safety valve 3 is connected with hydraulic oil container 6, the B hydraulic fluid ports of the variable pump 2 and the oil inlet phase for retreating safety valve 4
Even, the oil outlet for retreating safety valve 4 is connected with hydraulic oil container 6, and one end of the slippage pump 1 is connected with hydraulic oil container 6,
The other end is connected with the oil outlet of advance safety valve 3 and retrogressing safety valve 4 respectively by repairing filter 7, the advance safety
Valve 3 is overflow valve I31, and the safety valve 4 that retreats is by overflow valve II41 and the throttling being arranged in parallel on overflow valve II41 oil circuits
Hole 42 is composed.
The utility model is simple in structure, and the utility model on the forward-reverse side of contiuously variable transmission by being respectively provided with one
Safety valve, the pressure for playing the role of hydraulic system when forward or backward open pressure release when reaching 35MPa, ensure hydraulic pressure system
The pressure of system is no more than 35Mpa, protects hydraulic system nonoverload.Due to contiuously variable transmission retreat operating mode use be not so good as before
Into more, by a small throttle orifice 42 in parallel on the oil circuit of overflow valve II41, when retreating, flow is small, the row of corresponding speed disk
Hour is measured, hydraulic oil can be flowed out from throttle orifice 42, will not make machine movement, to accordingly improve the stopping maneuvering performance of machine.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (3)
1. a kind of contiuously variable transmission Hydraulic Power Transmission System stopped convenient for middle position, it is characterised in that：Including slippage pump (1), variable
Pump (2), advance safety valve (3), retreat safety valve (4) and fixed displacement motor (5), the A hydraulic fluid ports of the variable pump (2) respectively with quantitatively
The A hydraulic fluid ports of motor (5) are connected with the oil inlet of advance safety valve (3), B hydraulic fluid ports and the variable pump (2) of the fixed displacement motor (5)
B hydraulic fluid ports are connected, and the oil outlet of the advance safety valve (3) is connected with hydraulic oil container (6), and the B hydraulic fluid ports of the variable pump (2) are with after
The oil inlet for moving back safety valve (4) is connected, and the oil outlet for retreating safety valve (4) is connected with hydraulic oil container (6), the slippage pump
(1) one end is connected with hydraulic oil container (6), the other end respectively with advance safety valve (3) and retreat safety valve (4) oil outlet phase
Even.
2. a kind of contiuously variable transmission Hydraulic Power Transmission System stopped convenient for middle position according to claim 1, it is characterised in that：
The advance safety valve (3) is overflow valve I (31), the retrogressing safety valve (4) by overflow valve II (41) and throttle orifice (42) simultaneously
Join.
3. a kind of contiuously variable transmission Hydraulic Power Transmission System stopped convenient for middle position according to claim 1 or 2, feature exist
In：Repairing filter (7) is equipped between the oil outlet of the slippage pump (1) and advance safety valve (3) and retrogressing safety valve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721531124.8U CN207880011U (en) | 2017-11-16 | 2017-11-16 | A kind of contiuously variable transmission Hydraulic Power Transmission System stopped convenient for middle position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721531124.8U CN207880011U (en) | 2017-11-16 | 2017-11-16 | A kind of contiuously variable transmission Hydraulic Power Transmission System stopped convenient for middle position |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207880011U true CN207880011U (en) | 2018-09-18 |
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ID=63499891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721531124.8U Active CN207880011U (en) | 2017-11-16 | 2017-11-16 | A kind of contiuously variable transmission Hydraulic Power Transmission System stopped convenient for middle position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207880011U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113428128A (en) * | 2021-07-27 | 2021-09-24 | 潍柴雷沃重工股份有限公司 | Electric control HMT-based neutral parking implementation method and system and agricultural machine |
-
2017
- 2017-11-16 CN CN201721531124.8U patent/CN207880011U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113428128A (en) * | 2021-07-27 | 2021-09-24 | 潍柴雷沃重工股份有限公司 | Electric control HMT-based neutral parking implementation method and system and agricultural machine |
| CN113428128B (en) * | 2021-07-27 | 2022-07-19 | 潍柴雷沃重工股份有限公司 | Electric control HMT-based neutral parking implementation method and system and agricultural machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181127 Address after: 212300 Danbei Town Industrial Park, Zhenjiang City, Jiangsu Province Patentee after: Jiangsu World Agricultural Machinery Co., Ltd. Address before: 213000 Industrial Park of Danbei Town, Danyang City, Zhenjiang City, Jiangsu Province Patentee before: Jiangsu Zhenji Machinery Manufacturing Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 212300 Danbei Town Industrial Park, Zhenjiang City, Jiangsu Province Patentee after: Jiangsu wode Agricultural Machinery Co., Ltd Address before: 212300 Danbei Town Industrial Park, Zhenjiang City, Jiangsu Province Patentee before: JIANGSU WORLD AGRICULTURAL MACHINERY Co.,Ltd. |