CN202867758U - Hydraulic pressure variable-speed transmission device - Google Patents
Hydraulic pressure variable-speed transmission device Download PDFInfo
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- CN202867758U CN202867758U CN 201220345443 CN201220345443U CN202867758U CN 202867758 U CN202867758 U CN 202867758U CN 201220345443 CN201220345443 CN 201220345443 CN 201220345443 U CN201220345443 U CN 201220345443U CN 202867758 U CN202867758 U CN 202867758U
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Abstract
The utility model discloses a hydraulic pressure variable-speed transmission device, which includes a big hydraulic cylinder, a small hydraulic cylinder, a hydraulic oil tank, a stepless speed regulating device and a driving motor, wherein the big hydraulic cylinder is communicated with the small hydraulic cylinder through an oil-conveying pipeline; a two-position two-way electromagnetic valve is arranged on the oil-conveying pipeline used for communicating the big hydraulic cylinder with the small hydraulic cylinder and arranged therebetween; the big hydraulic cylinder and the small hydraulic cylinder are communicated with the hydraulic oil tank through the oil-conveying pipeline; and the operating driving motor adopts transmission hydraulic pressure to drive a main oil pump to work, drives a small piston bent axle to operate through a transmission variable-speed output device, and simultaneously drives a small piston input oil pump and a big piston output oil pump to work through a coupling and the stepless speed regulating device. According to the utility model, through the adoption of the designed advanced stepless hydraulic speed regulating device, speed and pressure of oil of all the hydraulic oil pumps can be controlled as per a programmed working routine, so that speed and pressure regulation is realized, especially, the Pascal hydraulic pressure principle is utilized to manyfold improve the conversion rate of the source power.
Description
Technical field
The utility model relates to the gear shift device field, be particularly related to a kind of hydraulic speed-changing transmission device, be mainly used in the program control CVT (continuously variable transmission) of modern industry automation, (PLC control is adopted in industrial automation also can to change stored program control system, can adopt the single-chip microcomputer fixed routine on the automobile) be applied to automobile industry, all be to realize gear by the conversion of regulating hydraulic pressure and energy.
Background technique
Existing all speed change gears nearly all are to adopt the mechanical speed-changing gear gearshift to transmit outputting power, on automobile-used: traditional hydraulic automatic speed variator is according to the travelling speed of automobile and the variation of throttle opening, the automatic speed changing gear, its gearshift control mode is to convert the speed of a motor vehicle and throttle opening signal to the control oil pressure mechanically, and this oil pressure is added to the two ends of shift valve, position with the control shift valve, thereby change the oil circuit of gearshift executive component (clutch and break), like this, the working solution force feed enters corresponding executive component, make clutch combination or separation, break is braked or is unclamped, upshift or the downshift of control planetary transmission, thus realize automatic speed changing; The electric control hydraulic automatic transmission is set up electronic control system on the hydraulic automatic speed variator basis and is formed, it is by the running state of sensor and switch monitoring automobile and motor, accept driver's instruction, and convert the information that obtains to electrical signal and be input to ECU (Electrical Control Unit), ECU (Electrical Control Unit) is according to these signals, shift valve by the electromagnetic valve hydraulic control device, it opens or closes towards the oil circuit of shift clutch and break, thereby the conversion of the control gearshift moment and gear is to realize automatic speed changing.The core control devices of automatic transmission is hydraulic control device, and hydraulic control device is comprised of oil pump, valve body, clutch, break and the fluid path that connects all these parts.Supporting critical component be valve body, so it is the control centre of automatic transmission.The effect of valve body is according to the load state of motor and chassis power train (throttle opening and output shaft rotating speed), the oil pressure that oil pump is outputed to each actuator is controlled, with the control fluid torque converter, the combination of controlling each clutch and break with separate the realization automaitc shfit.All be to adopt motor for driving power source in existing industrialized production, its supporting arrangements for speed regulation have mechanical type gear graduation, hydraulic transmission speed governing, also have at present state-of-the-art stepless speed regulation and frequency converter timing, but its door all be unable to do without the gear gearshift or fixing reduction gears mechanism is arranged.Although the development of prior art has improved whole working efficiency, mechanical efficiency does not perform to best boundary in the transformation of energy of its whole gearshift performance and power source.
In realizing process of the present utility model, the inventor finds that there is following problem at least in prior art: the conversion efficiency that the speed change of the speed change of motor car engine and motor self all will consume a large amount of energy and power source in the prior art in the process of speed change and transferring power does not perform to best boundary, and machinery driving efficiency is low.
Summary of the invention
In order to solve the problem of prior art, make specifically variable speed drive reach the input power that has reduced driving source under the condition of Same Efficieney output, can adjust its speed and power according to the condition free of loaded work piece, overload capacity is strong.The utility model embodiment provides a kind of hydraulic speed-changing transmission device, the stepless hydraulic speed regulating device of advanced design, control the speed of each hydraulic-pressure pump oil mass and pressure according to the working procedure that weaves and reach the purpose of speed and pressure-regulating, particularly utilized Pascal's hydraulic principle, improved the conversion ratio of driving source exponentially.Described technological scheme is as follows:
A kind of hydraulic speed-changing transmission device, described transmission device comprises: large oil hydraulic cylinder, small cylinder, hydraulic oil container, stepless speed-regulating device and drive motor, be provided with a two-position two-way solenoid valve between described large oil hydraulic cylinder and the described small cylinder, described large oil hydraulic cylinder and described small cylinder are communicated with described hydraulic oil container by pipeline road respectively;
Be provided with large piston in the described large oil hydraulic cylinder, described large piston is connected with large piston crank mechanism by large piston rod, and an end of described large piston crank mechanism is connected with large piston bent axle power take-off mechanism;
Be provided with small piston in the described small cylinder, described small piston is connected with the small piston crank mechanism by the small piston connecting rod, and an end of described small piston crank mechanism is connected with described drive motor by transmission gear shift output unit and hydraulic driving main oil pump;
The bottom of described large oil hydraulic cylinder is provided with large piston oil outlet, with be provided with a two-position three way magnetic valve on the pipeline road that described large piston oil outlet is connected, described two-position three way magnetic valve is communicated with described hydraulic oil container by two pipeline roads, and the pipeline road that is communicated with described hydraulic oil container at the described two-position three way magnetic valve of article one is provided with large piston output oil pump;
The bottom of described small cylinder is provided with the small piston filler opening, and the pipeline road that is communicated with described hydraulic oil container at described small piston filler opening is provided with unidirectional oiling valve, relief valve and small piston input oil pump;
Described drive motor is connected with described stepless speed-regulating device, described hydraulic driving main oil pump, described small piston input oil pump and the equal circuit of large piston output oil pump of being connected.
Further, described large oil hydraulic cylinder and described small cylinder are two independently cylinder bodies, and perhaps described large oil hydraulic cylinder and described small cylinder are to use dividing plate to be split to form between the one-piece cylinder.
Further, the opposite end with being connected described large piston bent axle power take-off mechanism one end of described large piston crank mechanism is provided with power output balance flywheel.
Further, described small piston crank mechanism is fixedly connected with the transmission device support with the opposite end that is connected described transmission gear shift output unit one end.
Further, described transmission device also comprises the PLC automatic controller, and described PLC automatic controller employing program is controlled the unlatching of described hydraulic driving main oil pump, described small piston input oil pump and described large piston output oil pump or closed.Under special condition, also can adopt single-chip microcomputer to write fixing control program.
Further, described drive motor is direct current generator or AC motor or battery supply, also can adopt fuel power or other natural power source under specific condition.
The beneficial effect that the technological scheme that the utility model embodiment provides is brought is:
Stepless hydraulic speed regulating device by advanced design, control the speed of each hydraulic-pressure pump oil mass and the purpose that pressure reaches speed and pressure-regulating according to the working procedure that weaves, particularly utilized Pascal's hydraulic principle, improved the conversion ratio of driving source exponentially.On the other hand, reach the input power that has reduced driving source under the condition of Same Efficieney output, can adjust its speed and power according to the condition free of loaded work piece, overload capacity is strong.
Description of drawings
In order to be illustrated more clearly in the technological scheme among the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the hydraulic speed-changing transmission structures schematic representation that the utility model embodiment one provides;
Fig. 2 is the hydraulic speed-changing transmission structures schematic representation that the utility model embodiment two provides.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing the utility model mode of execution is described in further detail.
Embodiment one
Present embodiment provides a kind of hydraulic speed-changing transmission device, referring to Fig. 1, this transmission device comprises: large oil hydraulic cylinder 18, small cylinder 17, hydraulic oil container 13, stepless speed-regulating device 9 and drive motor 7, this large oil hydraulic cylinder 18 and small cylinder 17 are two separate cylinder bodies, adopt pipeline road to be communicated with between large oil hydraulic cylinder 18 and the small cylinder 17, be provided with a two-position two-way solenoid valve 14 at the pipeline road that is communicated with between large oil hydraulic cylinder 18 and the small cylinder 17, large oil hydraulic cylinder 18 and small cylinder 17 are communicated with hydraulic oil container 13 by pipeline road respectively.
In large oil hydraulic cylinder 18, be provided with large piston 20, this large piston 20 is connected with large piston crank mechanism 2 by large piston rod 19, one end of this large piston crank mechanism 2 is connected with large piston bent axle power take-off mechanism 1, the opposite end with being connected large piston bent axle power take-off mechanism 1 one ends of large piston crank mechanism 2 is provided with power output balance flywheel 3, and namely the two ends of this large piston crank mechanism 2 arrange respectively large piston bent axle power take-off mechanism 1 and power output balance flywheel 3.Thereby the motion of large piston 20 in large oil hydraulic cylinder 18 drives large piston rod 19 and drives large piston crank mechanism 2 rotations, the large piston bent axle of the rotary actuation power take-off mechanism 1 of large piston crank mechanism 2.
In small cylinder 17, be provided with small piston 21, this small piston 21 is connected with small piston crank mechanism 4 by small piston connecting rod 22, one end of this small piston crank mechanism 4 is connected with drive motor 7 by transmission gear shift output unit 5 and hydraulic driving main oil pump 6, being fixedly connected with the transmission device support with the opposite end that is connected described transmission gear shift output unit 5 one ends of small piston crank mechanism 4.Drive motor 7 is connected with stepless speed-regulating device 9 by a coupling 8 again.Like this, small piston crank mechanism 4 rotatablely moves under the effect of drive motor 7, hydraulic driving main oil pump 6 and transmission gear shift output unit 5, thereby the small piston connecting rod 22 that rotarily drives of transmission gear shift output unit 5 drives small piston 21 motions, because the motion of small piston 21 and so that hydraulic oil between small cylinder 17, large oil hydraulic cylinder 18 and hydraulic oil container 13, flow, thereby drive large piston 20 in large oil hydraulic cylinder 18 interior motions.
The bottom of large oil hydraulic cylinder 18 is provided with large piston oil outlet 24, with be provided with a two-position three way magnetic valve 15 on the pipeline road that large piston oil outlet 24 is connected, this two-position three way magnetic valve 15 is communicated with hydraulic oil container 13 by two pipeline roads, and the pipeline road that is communicated with hydraulic oil container 13 at article one two-position three way magnetic valve 15 is provided with large piston output oil pump 16.Like this, the pipeline road that the hydraulic oil of large oil hydraulic cylinder 18 can be communicated with hydraulic oil container 13 by article one two-position three way magnetic valve 15 under the extraction of large piston output oil pump 16 is transported in the hydraulic oil container 13, and when the pressure in the large oil hydraulic cylinder 18 reduced, the hydraulic oil in the hydraulic oil container 13 can be drawn to by the pipeline road that second two-position three way magnetic valve 15 is communicated with hydraulic oil container 13 in the large oil hydraulic cylinder 18.
The bottom of small cylinder 17 is provided with small piston filler opening 23, and the pipeline road that is communicated with hydraulic oil container 13 at small piston filler opening 23 is provided with unidirectional oiling valve 12, relief valve 11 and small piston input oil pump 10.Under the effect of small piston input oil pump 10, hydraulic oil in the hydraulic oil container 13 can be transported in the small cylinder 17, owing to be provided with unidirectional oiling valve 12 at this pipeline road, then the hydraulic oil of small cylinder 17 pipeline road that can not directly be communicated with hydraulic oil container 13 by small cylinder 17 is back in the hydraulic oil container 13.
Preferably, this transmission device also comprises the PLC automatic controller, and the PLC automatic controller adopts the unlatching of program control hydraulic driving main oil pump 6, small piston input oil pump 10 and large piston output oil pump 16 or cuts out.Under special condition, can adopt single-chip microcomputer to write control program.
The working principle of a kind of hydraulic speed-changing transmission device that present embodiment one provides is:
Its concrete working procedure is: when initial, the epicoele of large piston 20 and small piston 21 has all been filled with hydraulic oil, promote small piston 21 when up at hydraulic driving main oil pump 6 by transmission gear shift output unit 5, the hydraulic oil of small piston epicoele enters in the large oil hydraulic cylinder 18 by two-position two-way solenoid valve 14 and forces large piston 20 descending, and this moment, the unidirectional oiling valve 12 at small piston epicoele filler opening 23 places cut out; Hydraulic pressure output oil pump 16 passes through two-position three way magnetic valve 15 with the resistance of its sucking-off with the minimizing piston stroking upward with the hydraulic oil of its epicoele rapidly during large piston stroking upward, and this moment, two-position two-way solenoid valve 14 was closed.Small piston 21 moves downward, and the hydraulic oil in the small piston input oil pump 10 control hydraulic oil containers 13 enters the small piston epicoele, forces small piston descending fast simultaneously fast by unidirectional oiling valve 12, small piston filler opening 23.Because small piston input oil pump 10 and large piston output oil pump 16 are according to the job order design work of large and small piston, transmission gear shift output unit 5 is adjusted to external outputting power required standard when meeting large piston operation with the power output of hydraulic driving main oil pump 6 according to the motion speed of small piston and moment.Stepless speed-regulating device 9 is exported pressure and the speed of oil pump 16 oil masses according to speed, moment standard control small piston input oil pump 10, the large piston of the large and small piston operation of oil hydraulic cylinder.
Stepless speed-regulating device 9 is CVT technique devices of belt pulley, controls two variable diameter pulleys.Variable diameter pulley is the core of CVT, and each belt pulley is comprised of two 20 ° of relative circular cones, in the groove of belt between two circular cones.When two circular cones of belt pulley from far, when namely diameter increased, belt was arranged in the lower position of groove, and the belt radius that rotates around belt pulley will diminish.When two circular cones of belt pulley from very close to, when namely diameter reduced, belt was arranged in the higher position of groove, and the belt radius that rotates around belt pulley will become large.CVT can produce the required power of belt pulley semiaxis of adjusting with hydraulic pressure, centrifugal force or spring tension.Distance between belt pulley center and the belt contact position in groove is Pitch radius.When belt pulley away from the time, belt is positioned at the lower, and Pitch radius reduces.When belt pulley was close, belt was positioned at higher position, and Pitch radius increases.The Pitch radius of drive pulley and the ratio of the Pitch radius of driven pulley have determined the height of gear.In the modernized epoch of current electric automatization high speed development, sequential procedure according to prior establishment, in time control the switching of each hydraulic-pressure pump turnover solenoid valve, also control regularly speed and the power output that large small piston moves up and down, can reach the required power of load and speed fully.The continuous strand stability of power output and the power factor of integral power when particularly power output balance flywheel 3 can significantly improve large and small piston crank mechanism operation.The power that can get its output according to Pascal's hydraulic principle is not only much bigger than driving source, and speed also can freely be adjusted.Hydraulic speed-changing transmission device of the present utility model also can be designed to the many sets of transmission mechanism of multi-cylinder to enlarge whole take-off output.
Suction in the hydraulic-pressure pump and sucking-off are according to the order of work design work of large and small piston, according to the sequential procedure that weaves in advance, in time control the turnover solenoid valve of each hydraulic driving oil pump and control regularly the speed that large small piston moves up and down, can reach the required working state of load fully.Again because in hydraulic driving main oil pump 6, be designed with the special pressure fuel pump centrifugal force handle of freely adjusting, can be according to the speed of whole its outputting power of demander's wage adjustment of loaded work piece.This handle is exactly the size of controlling two weight opening angles of its inside in fact, and angle is larger, and the rotating speed of oil pump is just higher, and the pressure that oil pump produces is larger.Because of hydraulic running steady with respect to mechanical motion, output torque is balanced, particularly external output is the connecting rod through large piston, and the auxiliary balance effect of outfit inertial flywheel, the power that can get its output according to Pascal's hydraulic principle is not only much bigger than driving source, but also smooth running, speed also can freely be adjusted.
Embodiment two
Present embodiment provides a kind of hydraulic speed-changing transmission device, referring to Fig. 2, this transmission device comprises: large oil hydraulic cylinder 18, small cylinder 17, hydraulic oil container 13, stepless speed-regulating device 9 and drive motor 7, this large oil hydraulic cylinder 18 and small cylinder 17 are to use dividing plate to be split to form between the one-piece cylinder.Offer a connected holes on the dividing plate between large oil hydraulic cylinder 18 and the small cylinder 17, be provided with a two-position two-way solenoid valve 14 at this connected holes place, large oil hydraulic cylinder 18 and small cylinder 17 are communicated with hydraulic oil container 13 by pipeline road respectively.
In large oil hydraulic cylinder 18, be provided with large piston 20, this large piston 20 is connected with large piston crank mechanism 2 by large piston rod 19, one end of this large piston crank mechanism 2 is connected with large piston bent axle power take-off mechanism 1, the opposite end with being connected large piston bent axle power take-off mechanism 1 one ends of large piston crank mechanism 2 is provided with power output balance flywheel 3, and namely the two ends of this large piston crank mechanism 2 arrange respectively large piston bent axle power take-off mechanism 1 and power output balance flywheel 3.Thereby the motion of large piston 20 in large oil hydraulic cylinder 18 drives large piston rod 19 and drives large piston crank mechanism 2 rotations, the large piston bent axle of the rotary actuation power take-off mechanism 1 of large piston crank mechanism 2.
In small cylinder 17, be provided with small piston 21, this small piston 21 is connected with small piston crank mechanism 4 by small piston connecting rod 22, one end of this small piston crank mechanism 4 is connected with drive motor 7 by transmission gear shift output unit 5 and hydraulic driving main oil pump 6, being fixedly connected with the transmission device support with the opposite end that is connected described transmission gear shift output unit 5 one ends of small piston crank mechanism 4.Drive motor 7 is connected with stepless speed-regulating device 9 by a coupling 8 again.Like this, small piston crank mechanism 4 rotatablely moves under the effect of drive motor 7, hydraulic driving main oil pump 6 and transmission gear shift output unit 5, thereby the small piston connecting rod 22 that rotarily drives of transmission gear shift output unit 5 drives small piston 21 motions, because the motion of small piston 21 and so that hydraulic oil between small cylinder 17, large oil hydraulic cylinder 18 and hydraulic oil container 13, flow, thereby drive large piston 20 in large oil hydraulic cylinder 18 interior motions.
The bottom of large oil hydraulic cylinder 18 is provided with large piston oil outlet 24, with be provided with a two-position three way magnetic valve 15 on the pipeline road that large piston oil outlet 24 is connected, this two-position three way magnetic valve 15 is communicated with hydraulic oil container 13 by two pipeline roads, and the pipeline road that is communicated with hydraulic oil container 13 at article one two-position three way magnetic valve 15 is provided with large piston output oil pump 16.Like this, the pipeline road that the hydraulic oil of large oil hydraulic cylinder 18 can be communicated with hydraulic oil container 13 by article one two-position three way magnetic valve 15 under the extraction of large piston output oil pump 16 is transported in the hydraulic oil container 13, and when the pressure in the large oil hydraulic cylinder 18 reduced, the hydraulic oil in the hydraulic oil container 13 can be drawn to by the pipeline road that second two-position three way magnetic valve 15 is communicated with hydraulic oil container 13 in the large oil hydraulic cylinder 18.
The bottom of small cylinder 17 is provided with small piston filler opening 23, and the pipeline road that is communicated with hydraulic oil container 13 at small piston filler opening 23 is provided with unidirectional oiling valve 12, relief valve 11 and small piston input oil pump 10.Under the effect of small piston input oil pump 10, hydraulic oil in the hydraulic oil container 13 can be transported in the small cylinder 17, owing to be provided with unidirectional oiling valve 12 at this pipeline road, then the hydraulic oil of small cylinder 17 pipeline road that can not directly be communicated with hydraulic oil container 13 by small cylinder 17 is back in the hydraulic oil container 13.
Preferably, this transmission device also comprises the PLC automatic controller, and the PLC automatic controller adopts the unlatching of program control hydraulic driving main oil pump 6, small piston input oil pump 10 and large piston output oil pump 16 or cuts out.Can also adopt as required the single-chip microcomputer coding to control.
The working principle of a kind of hydraulic speed-changing transmission device that present embodiment two provides is identical with the working principle of the hydraulic speed-changing transmission device that embodiment one provides, and two transmission devices only are that large oil hydraulic cylinder 18 is different with the structure of small cylinder 17.
Above-mentioned the utility model embodiment sequence number does not represent embodiment's quality just to description.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. hydraulic speed-changing transmission device, it is characterized in that, described transmission device comprises: large oil hydraulic cylinder (18), small cylinder (17), hydraulic oil container (13), stepless speed-regulating device (9) and drive motor (7), be provided with a two-position two-way solenoid valve (14) between described large oil hydraulic cylinder (18) and the described small cylinder (17), described large oil hydraulic cylinder (18) and described small cylinder (17) are communicated with described hydraulic oil container (13) by pipeline road respectively;
Be provided with large piston (20) in the described large oil hydraulic cylinder (18), described large piston (20) is connected with large piston crank mechanism (2) by large piston rod (19), and an end of described large piston crank mechanism (2) is connected with large piston bent axle power take-off mechanism (1);
Be provided with small piston (21) in the described small cylinder (17), described small piston (21) is connected with small piston crank mechanism (4) by small piston connecting rod (22), and an end of described small piston crank mechanism (4) is connected with described drive motor (7) by transmission gear shift output unit (5) and hydraulic driving main oil pump (6);
The bottom of described large oil hydraulic cylinder (18) is provided with large piston oil outlet (24), with be provided with a two-position three way magnetic valve (15) on the pipeline road that described large piston oil outlet (24) is connected, described two-position three way magnetic valve (15) is communicated with described hydraulic oil container (13) by two pipeline roads, and the pipeline road that is communicated with described hydraulic oil container (13) at the described two-position three way magnetic valve of article one (15) is provided with large piston output oil pump (16);
The bottom of described small cylinder (17) is provided with small piston filler opening (23), and the pipeline road that is communicated with described hydraulic oil container (13) at described small piston filler opening (23) is provided with unidirectional oiling valve (12), relief valve (11) and small piston input oil pump (10);
Described drive motor (7) is connected with described stepless speed-regulating device (9), described hydraulic driving main oil pump (6), described small piston input oil pump (10) and the equal circuit of the large piston output oil pump (16) of being connected.
2. hydraulic speed-changing transmission device according to claim 1, it is characterized in that, described large oil hydraulic cylinder (18) and described small cylinder (17) are two independently cylinder bodies, and perhaps described large oil hydraulic cylinder (18) and described small cylinder (17) are to use dividing plate to be split to form between the one-piece cylinder.
3. hydraulic speed-changing transmission device according to claim 1 is characterized in that, the opposite end with being connected described large piston bent axle power take-off mechanism (1) one end of described large piston crank mechanism (2) is provided with power output balance flywheel (3).
4. hydraulic speed-changing transmission device according to claim 1 is characterized in that, being fixedly connected with the transmission device support with the opposite end that is connected described transmission gear shift output unit (5) one ends of described small piston crank mechanism (4).
5. hydraulic speed-changing transmission device according to claim 1, it is characterized in that, described transmission device also comprises the PLC automatic controller, and described PLC automatic controller controls the unlatching of described hydraulic driving main oil pump (6), described small piston input oil pump (10) and described large piston output oil pump (16) or cuts out.
6. hydraulic speed-changing transmission device according to claim 1 is characterized in that, described drive motor (7) is direct current generator or AC motor or battery supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220345443 CN202867758U (en) | 2012-07-17 | 2012-07-17 | Hydraulic pressure variable-speed transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220345443 CN202867758U (en) | 2012-07-17 | 2012-07-17 | Hydraulic pressure variable-speed transmission device |
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| Publication Number | Publication Date |
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| CN202867758U true CN202867758U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220345443 Withdrawn - After Issue CN202867758U (en) | 2012-07-17 | 2012-07-17 | Hydraulic pressure variable-speed transmission device |
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| CN (1) | CN202867758U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748453A (en) * | 2012-07-17 | 2012-10-24 | 湖南长重机器股份有限公司 | Hydraulic variable-speed transmission device |
| CN108435395A (en) * | 2018-02-07 | 2018-08-24 | 江苏大隆凯科技有限公司 | It saves the kind of drive of power and includes the broken line of the equipment using this mode |
| WO2018226107A1 (en) * | 2017-06-09 | 2018-12-13 | Zollner Valdettario Jose Felipe | Drive-torque amplifier for a moving shaft |
-
2012
- 2012-07-17 CN CN 201220345443 patent/CN202867758U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748453A (en) * | 2012-07-17 | 2012-10-24 | 湖南长重机器股份有限公司 | Hydraulic variable-speed transmission device |
| CN102748453B (en) * | 2012-07-17 | 2015-09-16 | 湖南长重机器股份有限公司 | A kind of hydraulic speed-changing transmission device |
| WO2018226107A1 (en) * | 2017-06-09 | 2018-12-13 | Zollner Valdettario Jose Felipe | Drive-torque amplifier for a moving shaft |
| CN108435395A (en) * | 2018-02-07 | 2018-08-24 | 江苏大隆凯科技有限公司 | It saves the kind of drive of power and includes the broken line of the equipment using this mode |
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Granted publication date: 20130410 Effective date of abandoning: 20150916 |
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