CN204878581U - Hydrostatic infinitely variable speed device - Google Patents

Hydrostatic infinitely variable speed device Download PDF

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Publication number
CN204878581U
CN204878581U CN201520652856.7U CN201520652856U CN204878581U CN 204878581 U CN204878581 U CN 204878581U CN 201520652856 U CN201520652856 U CN 201520652856U CN 204878581 U CN204878581 U CN 204878581U
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China
Prior art keywords
motor
pump
plunger
drive shaft
variable
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Active
Application number
CN201520652856.7U
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Chinese (zh)
Inventor
翁海龙
李则冰
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ZHEJIANG AOVITE HYDRAULIC MECHANICAL CO Ltd
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ZHEJIANG AOVITE HYDRAULIC MECHANICAL CO Ltd
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Priority to CN201520652856.7U priority Critical patent/CN204878581U/en
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Abstract

The utility model discloses a hydrostatic infinitely variable speed device, including variable piston pump, quantitative piston motor and high -pressure overflow valve subassembly, variable piston pump's discharge capacity and motor rotating direction are connected in variable piston pump with slippage pump, filter, high -pressure overflow valve subassembly by cradle angel position control, oil inlet, and variable piston pump communicates with each other with quantitative piston motor oil circuit, the output of motor transmission shaft is equipped with the jump ring groove. Compared with the prior art, the utility model discloses a hydrostatic infinitely variable speed device is equipped with the jump ring groove at the output of motor transmission shaft, with the fixed spacing motor transmission shaft of jump ring, has abandoned the axial plane and has radially punched, adopts that penetrate the screw or spacing scheme is fixed to the bolt, the defect of having avoided the axial plane radially to punch and make the rigidity of motor transmission shaft reduce by a wide margin, greatly reduced the probability of minor axis, improved work efficiency.

Description

A kind of hydrostatic stepless speed change device
Technical field
The utility model relates to engineering machinery actuation techniques field, is specifically related to a kind of hydrostatic stepless speed change device.
Background technique
In traditional agriculture, the variable speed drive of farm machinery is mainly mechanical gearbox, this gearbox realizes speed change by different gear ratio, its shortcoming existed: the engagement between different gear be realized, so just make the noise when engaging very large, and inconvenient operation, when producing, also need to drop into larger tooling device, many enterprises can only produce wherein one in parts, just limit the production of mechanical gear box, and mechanical gearbox complicated structure, maintenance is also inconvenient.
Present farm machinery is also progressively using hydraulic transformer, but the positioning limiting fixator of the motor drive shaft output terminal in those hydraulic-gears mostly adopts the punching of axial plane radial direction, penetrate screw or bolt is fixed spacing, because the radial punching of axial plane can make the rigidity of motor drive shaft significantly reduce, and then operationally increase the probability of minor axis, not only increase the cost of maintenance, also have impact on the efficiency of work.
Model utility content
The utility model object is to provide a kind of hydrostatic stepless speed change device, the punching of axial plane radial direction is mostly adopted with the positioning limiting fixator solving the motor drive shaft output terminal in prior art in hydraulic-gear, penetrate screw or bolt is fixed spacing, because the radial punching of axial plane can make the rigidity of motor drive shaft significantly reduce, and then operationally increase the probability of minor axis, not only increase the cost of maintenance, also have impact on the technical bug of the efficiency of work.
The technical solution of the utility model is achieved in that
A kind of hydrostatic stepless speed change device, comprise the device case being provided with filler opening and drain tap, described device case inside is provided with pump drive shaft, motor drive shaft, described pump drive shaft is connected with Variable plunger pump, described motor drive shaft is connected with quantitative plunger motor, described Variable plunger pump is connected with the reel cage of controllable motor transmission shaft sense of rotation and rotational speed, filler opening is by high pressure kicks valve assembly link variable plunger pump, quantitative plunger motor connects drain tap, Variable plunger pump communicates with the oil circuit of quantitative plunger motor, the output terminal of described motor drive shaft is provided with jump-ring slot, the output terminal of described motor drive shaft is provided with jump-ring slot.
Preferably, the oil circuit part that described filler opening is connected with Variable plunger pump is provided with slippage pump.
Preferably, described Variable plunger pump and quantitative plunger motor all comprise plunger and cylinder body respectively, described plunger is arranged in cylinder body and also can slides up and down in cylinder body, described plunger is provided with piston shoes, piston shoes basal sliding abuts to be had to push pedal, piston shoes offer bottom groove, and described bottom groove is provided with the hydraulic fluid port be communicated with oil circuit in plunger, and this hydraulic fluid port passes to piston shoes and abuts place to push pedal.
Preferably, the oil circuit part that described filler opening is connected with Variable plunger pump is also provided with hydraulic oil filter.
Compared with prior art, the utility model has following beneficial effect:
Hydrostatic stepless speed change device of the present utility model, change traditional gear graduation mode, mechanical energy is converted to by hydraulic energy, thus realize electrodeless variable-speed, improve the conversion ratio of working efficiency and energy, simultaneously, jump-ring slot is provided with at the output terminal of motor drive shaft, spacing motor drive shaft is fixed with jump ring, abandoned the punching of axial plane radial direction, employing penetrates screw or bolt is fixed spacing scheme, avoids the defect that the punching of axial plane radial direction makes the rigidity of motor drive shaft significantly reduce, greatly reduce the probability of minor axis, improve working efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the hydrostatic stepless speed change device of the utility model;
Fig. 2 is the A portion enlarged view of Fig. 1;
Fig. 3 is the External view of the hydrostatic stepless speed change device of the present invention.
In figure: device case 1, filler opening 2, drain tap 3, pump drive shaft 4, motor drive shaft 5, Variable plunger pump 6, quantitative plunger motor 7, reel cage 8, reel cage adjustable lever 9, jump-ring slot 10, slippage pump 11, plunger 12, cylinder body 13, piston shoes 14, to push pedal 15, bottom groove 16, lubrication hydraulic fluid port 17, hydraulic oil filter 18.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the utility model is clearly and completely described.
As shown in Figure 1 to Figure 3, a kind of hydrostatic stepless speed change device, comprise the device case 1 being provided with filler opening 2 and drain tap 3, filler opening 2 is connected hydraulic oil container with drain tap 3 respectively in the outside of device case 1, described device case inside is provided with pump drive shaft 4, motor drive shaft 5, described pump drive shaft 4 is connected with the power equipments such as motor, described pump drive shaft 4 is connected with Variable plunger pump 6, described motor drive shaft 5 is connected with quantitative plunger motor 7, wherein, Variable plunger pump 6 is when nonzero digit, the pump drive shaft 4 rotated can drive Variable plunger pump 6 oil suction, force feed, thus low pressure oil is depressed into high pressure oil, described Variable plunger pump 6 is connected with the reel cage 8 of controllable motor transmission shaft 5 sense of rotation and rotational speed, described reel cage 8 is connected with reel cage adjustable lever 9, the fuel-displaced direction of Variable plunger pump 6 mesohigh oil and the oil pressure size of high pressure oil can be realized by reel cage adjustable lever 9, described filler opening 2 is by high pressure kicks valve assembly link variable plunger pump 6, thus supply low pressure oil to Variable plunger pump 6, quantitative plunger motor 7 connects drain tap 3, wherein, device case 1 is provided with two drain taps 3, can select arbitrarily to connect according to installation requirements, Variable plunger pump 6 communicates with the oil circuit of quantitative plunger motor 7, quantitative plunger motor 7 is entered after the oil pressure of Variable plunger pump 6 raises, it is movable that high pressure oil promotes quantitative plunger motor 7, thus drive motor drive shaft 5 to rotate, described device case 1 outside is provided with reel cage adjustable lever 9, the output terminal of described motor drive shaft 5 is provided with jump-ring slot 10, time fixing, jump ring is snapped in jump-ring slot 10, this kind of mode convenient disassembly, and ensure that the rigidity of motor drive shaft 5 is unaffected.
The oil circuit part that described filler opening 2 is connected with Variable plunger pump 6 is provided with slippage pump 11, this device is in operation and will certainly causes the loss of hydraulic oil, be provided with slippage pump 11 avoid equipment due to the oil pressure that causes of hydraulic oil deficiency unstable, thus reduce the energy conversion efficiency between pump drive shaft 4 and motor drive shaft 5.
Described Variable plunger pump 6 all comprises plunger 12 and cylinder body 13 respectively with quantitative plunger motor 7, described plunger 12 is arranged in cylinder body 13 and also can slides up and down in cylinder body 13, described plunger 12 is provided with piston shoes 14, piston shoes 14 basal sliding abuts to be had to push pedal 15, piston shoes 14 offer bottom groove 16, described bottom groove 16 is provided with the lubrication hydraulic fluid port 17 be communicated with oil circuit in plunger 12, this lubrication hydraulic fluid port 17 passes to piston shoes 14 and abuts place to push pedal 15, makes the hydraulic oil in oil circuit can enter this abutting place and lubricates.
The oil circuit part that described filler opening 2 is connected with Variable plunger pump 6 is also provided with hydraulic oil filter 18, enter filler opening 2 hydraulic oil need to enter hydraulic oil filter 18 filter after at entering variable plunger pump 6, the quality of hydraulic oil can be ensured like this, put forward high-octane conversion efficiency.
According to the structure of hydraulic pressure stepless speed change device of the present utility model, hydrostatic stepless speed change device of the present utility model, change traditional gear graduation mode, mechanical energy is converted to by hydraulic energy, thus realize electrodeless variable-speed, improve the conversion ratio of working efficiency and energy, simultaneously, jump-ring slot is provided with at the output terminal of motor drive shaft, spacing motor drive shaft is fixed with jump ring, abandon the punching of axial plane radial direction, employing penetrates screw or bolt is fixed spacing scheme, avoid the defect that the punching of axial plane radial direction makes the rigidity of motor drive shaft significantly reduce, greatly reduce the probability of minor axis, improve working efficiency.

Claims (4)

1. a hydrostatic stepless speed change device, it is characterized in that, comprise the device case being provided with filler opening and drain tap, described device case inside is provided with pump drive shaft, motor drive shaft, described pump drive shaft is connected with Variable plunger pump, described motor drive shaft is connected with quantitative plunger motor, described Variable plunger pump is connected with the reel cage of controllable motor transmission shaft sense of rotation and rotational speed, filler opening is by high pressure kicks valve assembly link variable plunger pump, quantitative plunger motor connects drain tap, Variable plunger pump communicates with the oil circuit of quantitative plunger motor, the output terminal of described motor drive shaft is provided with jump-ring slot.
2. hydrostatic stepless speed change device as claimed in claim 1, is characterized in that, the oil circuit part that described filler opening is connected with Variable plunger pump is provided with slippage pump.
3. hydrostatic stepless speed change device as claimed in claim 1 or 2, it is characterized in that, described Variable plunger pump and quantitative plunger motor all comprise plunger and cylinder body respectively, described plunger is arranged in cylinder body and also can slides up and down in cylinder body, described plunger is provided with piston shoes, and piston shoes basal sliding abuts to be had to push pedal, and piston shoes offer bottom groove, described bottom groove is provided with the hydraulic fluid port be communicated with oil circuit in plunger, and this hydraulic fluid port passes to piston shoes and abuts place to push pedal.
4. hydrostatic stepless speed change device as claimed in claim 3, is characterized in that, the oil circuit part that described filler opening is connected with Variable plunger pump is also provided with hydraulic oil filter.
CN201520652856.7U 2015-08-26 2015-08-26 Hydrostatic infinitely variable speed device Active CN204878581U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520652856.7U CN204878581U (en) 2015-08-26 2015-08-26 Hydrostatic infinitely variable speed device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520652856.7U CN204878581U (en) 2015-08-26 2015-08-26 Hydrostatic infinitely variable speed device

Publications (1)

Publication Number Publication Date
CN204878581U true CN204878581U (en) 2015-12-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520652856.7U Active CN204878581U (en) 2015-08-26 2015-08-26 Hydrostatic infinitely variable speed device

Country Status (1)

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CN (1) CN204878581U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105715532A (en) * 2016-04-06 2016-06-29 北京理工大学 Parallel shaft type conjoined hydraulic pump motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105715532A (en) * 2016-04-06 2016-06-29 北京理工大学 Parallel shaft type conjoined hydraulic pump motor

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