CN110454560A - A kind of loading machine Hydromechanical Stepless Transmission device - Google Patents
A kind of loading machine Hydromechanical Stepless Transmission device Download PDFInfo
- Publication number
- CN110454560A CN110454560A CN201910762275.1A CN201910762275A CN110454560A CN 110454560 A CN110454560 A CN 110454560A CN 201910762275 A CN201910762275 A CN 201910762275A CN 110454560 A CN110454560 A CN 110454560A
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- China
- Prior art keywords
- main body
- body bottom
- bottom case
- transmission
- loading machine
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
Abstract
The invention discloses a kind of loading machine Hydromechanical Stepless Transmission device, including transmission main body bottom case, wall distribution is fixedly installed with Left Drive box and right gear box at left and right sides of the transmission main body bottom case；Transmission main body bottom case rear left vertical is fixedly connected with inverted L shape steelframe, and oil pump is fixedly installed on the right side of inverted L shape steelframe, and inverted L shape steelframe top center position is vertically welded with threaded screw rod, and transmission main body bottom case rear is covered with shield.The present invention is by being covered with shield at transmission main body bottom case rear; shield offers mounting hole far from a middle side part of transmission main body bottom case vertically; mounting hole runs through with threaded screw rod activity; and screw thread has screwed up nut on threaded screw rod; it is closed using the shroud cover in transmission main body bottom case rear end; oil pump is protected, avoids oil pump is naked always from being exposed on the external the problem of being collided, causing reduced service life.
Description
Technical field
The present invention relates to loading machine technical field, specially a kind of loading machine Hydromechanical Stepless Transmission device.
Background technique
Currently, Hydrostatic drive can facilitate realization stepless speed regulation, loading machine engine is made often to work in economic speed section, it can
Improve the efficiency of energy utilization of vehicle；But the efficiency of hydraulic pump motor enclosed speed control loop as used in Hydrostatic drive also compared with
It is low, therefore compared with power shift hydraulic mechanical gear box, the Improvement of Hydrostatic drive is limited.Hydrostatic-mechanical Transmission passes through mechanical output
With the compound of hydraulic power, it can be achieved that efficient stepless transmission, makes engine maintain stable load, be conducive to improve fuel oil warp
Ji property, becomes one of developing direction of transmission system of wheel loader, domestic and international project machinery producer actively develops the drive technology
Research.
It is retrieved China Patent No. CN201820924761.X and discloses a kind of vehicle hydraulic mechanical stepless transmission device, though
The right technical solution is provided with the first cylinder, the first push rod, the second cylinder and the second push rod, will when user's use device
First cylinder and the second cylinder are connect with air compressor machine, improve the service life of transmission device.
But so there are two significant deficiencies for above-mentioned technical proposal times:
1, vital oil pump mechanism does not have any safeguard procedures in the technical solution, is easy by external shock shape
At irremediable damage；
2, the driving wheel of the transmission mechanism and driven wheel drive with direction of rotation respective splined shaft and transmission case
Output shaft engaged transmission, this mode avoid result in the output of the first fixed bin and the second fixed bin at left and right sides of main body
Rotational axis direction is different, can not walk so as to cause walking mechanism, and there are what fatal loading machine walking mechanism was unable to run to lack
It falls into.
Summary of the invention
The purpose of the present invention is to provide a kind of loading machine Hydromechanical Stepless Transmission devices, solve in background technique
The problem of proposed.
To achieve the above object, the invention provides the following technical scheme: a kind of loading machine is filled with Hydromechanical Stepless Transmission
It sets, including transmission main body bottom case, wall distribution is fixedly installed with Left Drive box and right transmission at left and right sides of the transmission main body bottom case
Box；Transmission main body bottom case rear left vertical is fixedly connected with inverted L shape steelframe, is fixedly installed on the right side of inverted L shape steelframe
The oil inlet of oil pump, oil pump is connected to oil inlet pipe fixation, and the oil outlet of oil pump is connected to the fixation of petroleum pipeline head end, inverted L shape steel
Top of the trellis middle position is vertically welded with threaded screw rod, and transmission main body bottom case rear is covered with shield, and shield is far from transmission main body
One middle side part of bottom case offers mounting hole vertically, and mounting hole runs through with threaded screw rod activity, and screw thread screws up on threaded screw rod
There is nut；
Lateral vertically integrated is provided with partition in the middle part of the transmission main body bottom case inner cavity, is vertically embedded in and is fixed on partition
Two first bearings symmetrical about partition central breaks, the interior distribution of the axis of two first bearings, which vertically runs through, pair
Axis and main shaft；The end of main shaft and countershaft is laterally fixed with active drive splines axis, the main shaft in front of the partition and
Be respectively fixed with left follower gear and right driving gear on countershaft, and left follower gear and right driving gear it is opposite side it is mutual
Engagement；
Insertion is fixed on the side wall of the Left Drive box and the transmission main body bottom case of right gear box central region
Second bearing, horizontal through there is transmission shaft lever in the axis of second bearing, the transmission shaft in Left Drive box and right gear box
The opposite one end of bar is respectively fixed with left splined shaft and right splined shaft, and left splined shaft and right splined shaft are respectively and before countershaft and main shaft
The active drive splines axis at end is meshed.
As a kind of preferred embodiment of the invention, middle part upper side edge level is right at left and right sides of the transmission main body bottom case
It is welded with under-chassis frame together, under-chassis frame offers mounting hole far from one end of transmission main body bottom case vertically.
As a kind of preferred embodiment of the invention, the shield right side central position on the lower side vertically offers inverted U
Notch, inverted U notch and oil inlet pipe pivot bush unit, shield are manganese steel compression molding.
As a kind of preferred embodiment of the invention, the equal level in top of shield front and rear sides wall offers recessed
Slot.
As a kind of preferred embodiment of the invention, the rear-end of spindle portion and hydraulic cylinder are sequentially connected, hydraulic cylinder with
The fixed connection of petroleum pipeline tail end.
As a kind of preferred embodiment of the invention, the top end face of the partition and transmission main body bottom case top surface are neat
Flat setting.
As a kind of preferred embodiment of the invention, it is covered with top cover at the top of the transmission main body bottom case, the four of top cover
It is fixedly connected by fixing bolt with transmission main body bottom case at angle.
As a kind of preferred embodiment of the invention, four corners are offered and are fixed at the top of the transmission main body bottom case
The bolt hole of bolt adaptation.
Compared with prior art, beneficial effects of the present invention are as follows:
1. the present invention is by being covered with shield at transmission main body bottom case rear, in side of the shield far from transmission main body bottom case
Portion offers mounting hole vertically, and mounting hole runs through with threaded screw rod activity, and screw thread has screwed up nut on threaded screw rod, using this
Shroud cover is closed in transmission main body bottom case rear end, is protected to oil pump, avoiding oil pump, naked be exposed on the external is collided always, makes
The problem of at reduced service life.
2. the present invention is due to being respectively fixed with left follower gear and right active on the main shaft and countershaft being located in front of partition
Gear, and left follower gear and the opposite side intermeshing of right driving gear, pass through left follower gear and right driving gear
Engaged transmission guarantees that the countershaft and main shaft fixed with left follower gear and right driving gear carry out opposite or phase reverse rotation, this
Mode avoids the prior art that machine power is caused to lose larger problem by the way of belt or chain drive, and transmission efficiency is bright
It is aobvious to improve, and solve in the prior art using belt or chain drive by the way of, needle rotation while leading to countershaft and main shaft
The problem of turning, causing the output shaft difference hour hands engaged to rotate, machine-walking can not be caused.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the overall structure diagram of loading machine Hydromechanical Stepless Transmission device of the present invention；
Fig. 2 is the transmission main body bottom case inner cavity structural schematic diagram of loading machine Hydromechanical Stepless Transmission device of the present invention；
Fig. 3 is the shield structure schematic diagram of loading machine Hydromechanical Stepless Transmission device of the present invention；
Fig. 4 is enlarged structure schematic diagram at the A of loading machine Hydromechanical Stepless Transmission device of the present invention.
In figure: transmission main body bottom case 1, mounting hole 2, under-chassis frame 3, right gear box 4, top cover 5, fixing bolt 6, Left Drive box
7, petroleum pipeline 8, oil pump 9, inverted L shape steelframe 10, shield 11, oil inlet pipe 12, inverted U notch 13, mounting hole 14, threaded screw rod 15,
Nut 16, first bearing 18, left follower gear 19, transmission shaft lever 20, second bearing 21, left splined shaft 22, actively passes groove 17
Dynamic splined shaft 23, right splined shaft 24, right driving gear 25, partition 26, main shaft 27, bolt hole 28, hydraulic cylinder 29, countershaft 30.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
Fig. 1-4 is please referred to, the present invention provides a kind of technical solution: a kind of loading machine Hydromechanical Stepless Transmission device,
Including being driven main body bottom case 1, transmission 1 left and right sides wall of main body bottom case distribution is fixedly installed with Left Drive box 7 and right gear box 4；
Transmission 1 rear left vertical of main body bottom case is fixedly connected with inverted L shape steelframe 10, is fixedly mounted on the right side of inverted L shape steelframe 10
There is oil pump 9, the oil inlet of oil pump 9 is connected to the fixation of oil inlet pipe 12, and the oil outlet of oil pump 9 is connected to the fixation of 8 head end of petroleum pipeline,
10 top center position of inverted L shape steelframe is vertically welded with threaded screw rod 15, and transmission 1 rear of main body bottom case is covered with shield 11, protects
Cover 11 offers mounting hole 14 far from a middle side part of transmission main body bottom case 1 vertically, and mounting hole 14 is passed through with 15 activity of threaded screw rod
It wears, and screw thread has screwed up nut 16 on threaded screw rod 15, is closed using the shield 11 lid in transmission 1 rear end of main body bottom case, to oil
Pump 9 is protected, and avoids oil pump 9 is naked always from being exposed on the external the problem of being collided, causing reduced service life；
Lateral vertically integrated is provided with partition 26, vertically insertion fixation on partition 26 in the middle part of transmission 1 inner cavity of main body bottom case
There are two the first bearing 18 symmetrical about 26 central breaks of partition, distribution is vertical in the axis of two first bearings 18
Through having countershaft 30 and main shaft 27；The end of main shaft 27 and countershaft 30 is laterally fixed with active drive splines axis 23, be located at every
Left follower gear 19 and right driving gear 25, and left follower gear 19 are respectively fixed on the main shaft 27 and countershaft 30 in 26 front of plate
The opposite side intermeshing with right driving gear 25 is protected by the engaged transmission of left follower gear 19 and right driving gear 25
It demonstrate,proves the countershaft 30 and main shaft 27 fixed with left follower gear 19 and right driving gear 25 and carries out opposite or phase reverse rotation, this mode
Avoid the prior art that machine power is caused to lose larger problem by the way of belt or chain drive, transmission efficiency obviously mentions
It is high；
Insertion is fixed with the on the side wall of the transmission main body bottom case 1 of 4 central region of Left Drive box 7 and right gear box
Two bearings 21, it is horizontal through there is transmission shaft lever 20 in the axis of second bearing 21, in Left Drive box 7 and right gear box 4
The opposite one end of transmission shaft lever 20 is respectively fixed with left splined shaft 22 and right splined shaft 24, and left splined shaft 22 and right splined shaft 24 divide
It is not meshed with the active drive splines axis 23 of 27 front end of countershaft 30 and main shaft, after two 23 phase reverse rotations of active drive splines axis
24 engaged transmission of left splined shaft 22 and right splined shaft is driven, to drive and the transmission shaft on left splined shaft 22 and right splined shaft 24
The same direction of rotation of bar 20, reaches best machine driving effect.
In the present embodiment, 1 left and right sides middle part upper side edge horizontal alignment of transmission main body bottom case is welded with under-chassis frame 3, under-chassis
Frame 3 offers mounting hole 2 far from one end of transmission main body bottom case 1 vertically, and 2 later period of mounting hole passes through the speed change of bolt and loading machine
The cooperation of box beam frame is fixed.
In the present embodiment, 11 right side central of shield position on the lower side vertically offers inverted U notch 13, inverted U notch 13 with
12 pivot bush unit of oil inlet pipe, shield 11 is manganese steel compression molding, in mounting strap 11, by inverted U notch 13 with into there is pipe
It not will cause the lid of shield 11 after 12 cooperations and close untight situation.
In the present embodiment, the equal level in top of 11 front and rear sides wall of shield opens up fluted 17, which can be convenient
When finishing operations personnel carry out removing shield 11, taken shield 11 with hand by groove 17.
In the present embodiment, 27 rear end of main shaft and hydraulic cylinder 29 are sequentially connected, hydraulic cylinder 29 and the fixed company of 8 tail end of petroleum pipeline
It is logical, as hydraulic-driven power resources in the prior art.
In the present embodiment, the top end face of partition 26 flushes setting with transmission 1 top surface of main body bottom case, guarantees that the lid of top cover 5 closes
When being driven 1 top of main body bottom case, partition 26 will not cause lid to close the influence sealed to top cover 5.
In the present embodiment, be driven at the top of main body bottom case 1 and be covered with top cover 5, the four corners of top cover 5 by fixing bolt 6 with
Transmission main body bottom case 1 is fixedly connected.
In the present embodiment, transmission 1 top four corners of main body bottom case offer the bolt hole 28 being adapted to fixing bolt 6,
When being fixedly connected, it can be cooperated by fixing bolt 6 by bolt hole 28 and carry out transmission main body bottom case 1 with top cover 5
Lid, which closes, to be fixed.
When a kind of loading machine is used with Hydromechanical Stepless Transmission device, it should be noted that the present invention one
Kind loading machine Hydromechanical Stepless Transmission device, including transmission main body bottom case 1, mounting hole 2, under-chassis frame 3, right gear box 4, top
Lid 5, fixing bolt 6, Left Drive box 7, petroleum pipeline 8, oil pump 9, inverted L shape steelframe 10, shield 11, oil inlet pipe 12, inverted U notch
13, mounting hole 14, threaded screw rod 15, nut 16, groove 17, first bearing 18, left follower gear 19, transmission shaft lever 20, second
Bearing 21, left splined shaft 22, active drive splines axis 23, right splined shaft 24, right driving gear 25, partition 26, main shaft 27, bolt
Hole 28, hydraulic cylinder 29, countershaft 30, component are universal standard part or component as known to those skilled in the art, structure and original
Reason all can be learnt by technical manual or be known by routine experiment method for this technology personnel.
In use, transmission 1 rear of main body bottom case is covered with shield 11, in side of the shield 11 far from transmission main body bottom case 1
Portion offers mounting hole 14 vertically, and mounting hole 14 runs through with 15 activity of threaded screw rod, and screw thread has screwed up spiral shell on threaded screw rod 15
Mother 16 is closed in transmission 1 rear end of main body bottom case using the shield 11 lid, protects to oil pump 9, avoid oil pump 9 exposed always
It is solid respectively on the main shaft 27 and countershaft 30 in 26 front of partition the problem of outside is collided, causes reduced service life
Surely there are left follower gear 19 and a right driving gear 25, and left follower gear 19 and the opposite side of right driving gear 25 are mutually nibbled
Close, by the engaged transmission of left follower gear 19 and right driving gear 25, and left splined shaft 22 and right splined shaft 24 respectively with
The active drive splines axis 23 of 27 front end of countershaft 30 and main shaft is meshed, and drives after two 23 phase reverse rotations of active drive splines axis
24 engaged transmission of left splined shaft 22 and right splined shaft, to drive and the transmission shaft lever 20 on left splined shaft 22 and right splined shaft 24
Same direction of rotation reaches best machine driving effect, guarantees the countershaft fixed with left follower gear 19 and right driving gear 25
30 and main shaft 27 carry out opposite or phase reverse rotation, this mode and the prior art avoided to cause by the way of belt or chain drive
Machine power loses larger problem, and transmission efficiency significantly improves.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, for this field skill
For art personnel, it is clear that invention is not limited to the details of the above exemplary embodiments, and without departing substantially from spirit of the invention or
In the case where essential characteristic, the present invention can be realized in other specific forms.Therefore, in all respects, should all incite somebody to action
Embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims rather than on state
Bright restriction, it is intended that including all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention
It is interior.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of loading machine Hydromechanical Stepless Transmission device, including transmission main body bottom case (1), it is characterised in that: the biography
Wall distribution is fixedly installed with Left Drive box (7) and right gear box (4) at left and right sides of dynamic main body bottom case (1)；It is driven main body bottom case (1)
Rear left vertical is fixedly connected with inverted L shape steelframe (10), is located on the right side of inverted L shape steelframe (10) and is fixedly installed with oil pump (9),
The oil inlet of oil pump (9) is connected to oil inlet pipe (12) fixation, and the oil outlet of oil pump (9) is connected to the fixation of petroleum pipeline (8) head end,
Inverted L shape steelframe (10) top center position is vertically welded with threaded screw rod (15), and transmission main body bottom case (1) rear is covered with shield
(11), shield (11) offers mounting hole (14) vertically far from a middle side part of transmission main body bottom case (1), mounting hole (14) and spiral shell
Line screw rod (15) activity runs through, and screw thread has screwed up nut (16) on threaded screw rod (15)；
Lateral vertically integrated is provided with partition (26) in the middle part of transmission main body bottom case (1) inner cavity, vertical embedding on partition (26)
Enter it is fixed there are two the first bearing (18) symmetrical about partition (26) central breaks, in two first bearings (18)
Distribution, which vertically runs through, in axis countershaft (30) and main shaft (27)；The end of main shaft (27) and countershaft (30) is laterally fixed with actively
Drive splines axis (23) is located on the main shaft (27) and countershaft (30) in front of the partition (26) and is respectively fixed with left follower gear
, and left follower gear (19) and the opposite side intermeshing of right driving gear (25) (19) and right driving gear (25)；
Insertion is solid on the side wall of the Left Drive box (7) and the transmission main body bottom case (1) of right gear box (4) central region
Surely have second bearing (21), it is horizontal through there is transmission shaft lever (20) in the axis of second bearing (21), be located at Left Drive box (7) and
The opposite one end of transmission shaft lever (20) in right gear box (4) is respectively fixed with left splined shaft (22) and right splined shaft (24), left
The active drive splines axis (23) of splined shaft (22) and right splined shaft (24) respectively with countershaft (30) and main shaft (27) front end is mutually nibbled
It closes.
2. a kind of loading machine Hydromechanical Stepless Transmission device according to claim 1, it is characterised in that: the transmission
Middle part upper side edge horizontal alignment is welded with under-chassis frame (3) at left and right sides of main body bottom case (1), and under-chassis frame (3) is far from transmission main body bottom
One end of shell (1) offers mounting hole (2) vertically.
3. a kind of loading machine Hydromechanical Stepless Transmission device according to claim 1, it is characterised in that: the shield
(11) right side central position on the lower side vertically offers inverted U notch (13), inverted U notch (13) and oil inlet pipe (12) movable sleeve
It connects, shield (11) is manganese steel compression molding.
4. a kind of loading machine Hydromechanical Stepless Transmission device according to claim 1, it is characterised in that: the shield
(11) the equal level in the top of front and rear sides wall opens up fluted (17).
5. a kind of loading machine Hydromechanical Stepless Transmission device according to claim 1, it is characterised in that: the main shaft
(27) rear end and hydraulic cylinder (29) are sequentially connected, and hydraulic cylinder (29) is connected to the fixation of petroleum pipeline (8) tail end.
6. a kind of loading machine Hydromechanical Stepless Transmission device according to claim 1, it is characterised in that: the partition
(26) top end face flushes setting with transmission main body bottom case (1) top surface.
7. a kind of loading machine Hydromechanical Stepless Transmission device according to claim 1, it is characterised in that: the transmission
It is covered with top cover (5) at the top of main body bottom case (1), the four corners of top cover (5) pass through fixing bolt (6) and transmission main body bottom case (1)
It is fixedly connected.
8. a kind of loading machine Hydromechanical Stepless Transmission device according to claim 7, it is characterised in that: the transmission
Four corners offer the bolt hole (28) being adapted to fixing bolt (6) at the top of main body bottom case (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910762275.1A CN110454560B (en) | 2019-08-19 | 2019-08-19 | Hydraulic mechanical stepless transmission device for loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910762275.1A CN110454560B (en) | 2019-08-19 | 2019-08-19 | Hydraulic mechanical stepless transmission device for loader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110454560A true CN110454560A (en) | 2019-11-15 |
| CN110454560B CN110454560B (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910762275.1A Active CN110454560B (en) | 2019-08-19 | 2019-08-19 | Hydraulic mechanical stepless transmission device for loader |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0013425A1 (en) * | 1979-01-10 | 1980-07-23 | Hettich, Robert, Dipl.-Ing. agr. | A hydro-mechanical change speed mechanism |
| US20020026793A1 (en) * | 2000-09-05 | 2002-03-07 | Kanzaki Kokyukoki Mfg. Co., Ltd. | Hydrostatic transmission and power train for vehicle |
| CN101158392A (en) * | 2007-06-11 | 2008-04-09 | 赵宏坚 | Mechanical-hydraulic composite transmission mechanism |
| CN205298454U (en) * | 2015-11-11 | 2016-06-08 | 潍柴动力股份有限公司 | Hydraulic pressure machinery infinitely variable transmission for loader |
| CN206175597U (en) * | 2016-11-20 | 2017-05-17 | 临海市高级职业中学 | Farm machinery hydraulic pressure machinery infinitely variable speed case |
| CN208503383U (en) * | 2018-06-14 | 2019-02-15 | 德州学院 | A kind of vehicle hydraulic mechanical stepless transmission device |
-
2019
- 2019-08-19 CN CN201910762275.1A patent/CN110454560B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0013425A1 (en) * | 1979-01-10 | 1980-07-23 | Hettich, Robert, Dipl.-Ing. agr. | A hydro-mechanical change speed mechanism |
| US20020026793A1 (en) * | 2000-09-05 | 2002-03-07 | Kanzaki Kokyukoki Mfg. Co., Ltd. | Hydrostatic transmission and power train for vehicle |
| CN101158392A (en) * | 2007-06-11 | 2008-04-09 | 赵宏坚 | Mechanical-hydraulic composite transmission mechanism |
| CN205298454U (en) * | 2015-11-11 | 2016-06-08 | 潍柴动力股份有限公司 | Hydraulic pressure machinery infinitely variable transmission for loader |
| CN206175597U (en) * | 2016-11-20 | 2017-05-17 | 临海市高级职业中学 | Farm machinery hydraulic pressure machinery infinitely variable speed case |
| CN208503383U (en) * | 2018-06-14 | 2019-02-15 | 德州学院 | A kind of vehicle hydraulic mechanical stepless transmission device |
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| Publication number | Publication date |
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| CN110454560B (en) | 2020-11-20 |
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