CN107327438A - Hydraulic motor and engineering transportation vehicle with stepless shift function - Google Patents
Hydraulic motor and engineering transportation vehicle with stepless shift function Download PDFInfo
- Publication number
- CN107327438A CN107327438A CN201710738562.XA CN201710738562A CN107327438A CN 107327438 A CN107327438 A CN 107327438A CN 201710738562 A CN201710738562 A CN 201710738562A CN 107327438 A CN107327438 A CN 107327438A
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- speed change
- stator
- oil cylinder
- inner curve
- oil
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- 230000008859 change Effects 0.000 claims abstract description 89
- 239000003921 oil Substances 0.000 claims abstract description 72
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 1
- 230000033001 locomotion Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses the hydraulic motor with stepless shift function and engineering transportation vehicle, including motor protecgulum, back cover of motor, stator and the rotor assembly being connected with axletree, rotor assembly periphery is provided with radially movable multiple plunger assemblies, also include being fixedly installed oil cylinder between motor protecgulum and back cover of motor, stator is the speed change stator being axially movable, oil cylinder can drive described stator shaft orientation to move forward and backward, and the inner ring of speed change stator has band taper inner curve raceway；When speed change stator is by hydraulic oil cylinder driving tandem movement vertically, the stroke of plunger assembly is gradually changed with the linear change with the high low head of size internal diameter of taper introversion trajectory of speed change stator.
Description
Technical field
The present invention relates to a kind of hydraulic motor, more particularly, to a kind of hydraulic motor with stepless shift function and application
The engineering transportation vehicle of the hydraulic motor.
Background technology
In mine, tunnel and Coal Transportation, which need to use, to be installed promising its and carries on heavy goods vehicle, heavy goods vehicle
For the hydraulic motor of power, the wheel of fluid motor-driven haulage vehicle makes vehicle advance.Due in heavy vehicle traveling process,
Will be according to the complexity particularly mines of different road conditions, tunnel, tunnel construction site, human pilot is ensures safety, at any time
Speed need to be accurately controlled slowly to increase or slowly reduce, to reach secure loading, the purpose of safety traffic, while taking into account economy
The requirement of property.
A kind of mode of traditional low speed high torque hydraulic motor is commutated by the way that two-bit triplet is separately configured on hydraulic motor
Valve makes the discharge capacity of hydraulic motor halve the purpose for reaching that motor rotary speed is improved, and the rotating speed of hydraulic motor is the relation of multiplication, also
It is to say in the case where outside oil sources flow is constant, when motor displacement is kept to original half, now speed is original twice,
This gear shift mode is larger to the impulse ratio of vehicle, can cause tire, the part accelerated wear test of system of vehicle transmission mechanism of vehicle, it is impossible to
The accurate regulation speed of requirement of human pilot is met, ensure safety traffic and saves the actual demand of fuel oil, economy and safety
Property is not good；Another mode is the flow for changing outside oil sources, and using variable pump, cost is higher, and volume is big, installs empty
Between be restricted.
Based on above reason, keep in the case that outside oil sources keeps constant, develop a kind of with stepless shift function
Hydraulic motor, meets this special operation condition, with than the larger market space.
Traditional hydraulic motor includes housing, motor stator, motor rotor and rotating shaft, and motor stator is fixed with housing, horse
Fixed up to rotor with rotating shaft, the vehicle frame connection of housing and vehicle, the wheel of motor shaft and vehicle is connected.Designer develops
Hydraulic motor with stepless shift function meets the reality of the accurate speed change of heavy goods vehicle to be applicable heavy goods vehicle
Need.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of hydraulic motor with stepless shift function, further
Engineering transportation vehicle using the hydraulic motor is provided.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：Hydraulic motor with stepless shift function,
It is characterized in that including motor protecgulum, back cover of motor, stator and the rotor assembly being connected with axletree, outside described rotor assembly
Enclose and be provided with radially movable multiple plunger assemblies, it is characterised in that also set including fixation between motor protecgulum and back cover of motor
Oil cylinder is equipped with, described stator is the speed change stator being axially movable, and described oil cylinder can be driven before and after described stator shaft orientation
Mobile, the inner ring of described speed change stator has band taper inner curve raceway；It is front and rear vertically by hydraulic oil cylinder driving in speed change stator
During rectilinear movement, the stroke of plunger assembly is with the linear of the high low head of size internal diameter with taper introversion trajectory of speed change stator
Change and gradually change.
Further preferred scheme is the present invention：Described oil cylinder includes piston, described piston and speed change stator one
Body is fixed, and oil cylinder promotes piston to drive the movement of speed change stator by oil pressure effect.
Further preferred scheme is the present invention：Described plunger assembly includes plunger and steel ball, and described steel ball can turn
It is located at the outer end of plunger dynamicly.
Further preferred scheme is the present invention：It is described to include being distributed in axial both ends with taper inner curve raceway
Inner curve bigger diameter end and inner curve miner diameter end, described inner curve bigger diameter end are transitioned into inner curve path in gradual change mode
End, described inner curve bigger diameter end includes the first large diameter and the first small internal diameter, and described inner curve miner diameter end includes the
Two large diameters and the second small internal diameter, the drop between the first large diameter and the first small internal diameter are small more than the second large diameter and second interior
Drop between footpath.
Further preferred scheme is the present invention：Described oil cylinder includes negative camber, and described speed change stator includes
Positive camber, the described negative camber of oil cylinder cooperates to limit speed change stator radial direction in oil cylinder with the positive camber of speed change stator
Relative rotation.
Further preferred scheme is the present invention：Speedup hydraulic fluid port and deceleration hydraulic fluid port, speedup oil are provided with described oil cylinder
Mouth and the first oil pocket UNICOM, deceleration hydraulic fluid port and the second oil pocket UNICOM.When speedup hydraulic fluid port oil-feed, the first oil pocket is promoted by piston
Speed change stator is moved to side, and plunger assembly is moved to inner curve miner diameter end, plunger row from the inner curve bigger diameter end of speed change stator
Journey is tapered into；When deceleration hydraulic fluid port oil-feed, the second oil pocket promotes speed change stator to be moved to opposite side by piston, plunger assembly
Inner curve bigger diameter end is moved to from the inner curve miner diameter end of speed change stator, ram travel becomes larger.
Further preferred scheme is the present invention：Engineering transportation vehicle, including hydraulic motor recited above.
Compared with prior art, it is an advantage of the invention that in the case where keeping outside oil sources constant, passing through speed change stator
On the big path of taper inner curve high low head, that is, plunger active strokes change, to realize the speed changing function of motor.
Because the reciprocating motion of speed change stator in the axial direction is got off reality in the promotion of oil pressure by the piston designed on speed change stator
Now move along a straight line, ram travel is changed with the high low head of inner curve of speed change stator, and plunger is radially reciprocated,
When speed change stator moves along a straight line vertically, the high low head of the big path of taper inner curve on speed change stator is little by little changing,
So the stroke of plunger is also little by little changing, because the area of plunger is constant, and the oil drain quantity of plunger is being gradually changed, motor
Rotating speed is also gradually changing, and is so achieved that the stepless shift function of motor.
When the deceleration hydraulic fluid port oil-feed of oil cylinder, the closed chamber of piston and oil cylinder on speed change stator under the promotion of oil pressure,
Speed change stator becomes big direction motion, the rotating speed linear reduction of motor towards ram travel；
When the speedup hydraulic fluid port oil-feed of oil cylinder, the closed chamber of piston and oil cylinder on speed change stator becomes under the promotion of oil pressure
The direction motion that fast stator reduces towards ram travel, the rotating speed of motor linearly increases.
Brief description of the drawings
Fig. 1 is the sectional view of the hydraulic motor of the present invention；
State diagrams of the Fig. 2 for hydraulic motor of the invention when speed increases；
State diagrams of the Fig. 3 for hydraulic motor of the invention when speed is reduced；
Fig. 4 is the structure chart of the speed change stator of the present invention；
Fig. 5 is enlarged drawing at A in Fig. 4；
Fig. 6 is the sectional view of the speed change stator of the present invention；
Fig. 7 is the inner curve bigger diameter end and the comparison diagram of inner curve miner diameter end of the speed change stator of the present invention；
Fig. 8 is the structure chart of the oil cylinder of the present invention；
Fig. 9 is enlarged drawing at B in Fig. 8；
Figure 10 is the axial sectional view of the oil cylinder of the present invention；
Figure 11 is the radial cross-section of the oil cylinder of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
Engineering transportation vehicle, vehicle body, wheel and axletree 4, the rotor assembly 5 of axletree 4 and hydraulic motor connects
Fixation, including the hydraulic motor with stepless shift function are connect, it includes motor protecgulum 1, back cover of motor 2, stator 7 and and wheel
The rotor assembly 5 that axle 4 is connected, the periphery of rotor assembly 5 is provided with radially movable multiple plunger assemblies 6, in addition to before motor
Oil cylinder 8 is fixedly installed between lid 1 and back cover of motor 2, stator 7 is the speed change stator 7 being axially movable, and oil cylinder 8 can drive fixed
Son moves linearly axially back and forth, and the inner ring of speed change stator 7 has band taper inner curve raceway 71；Driven in speed change stator 7 by oil cylinder 8
When dynamic tandem vertically is moved, the stroke of plunger assembly 6 is with the size with taper introversion trajectory 71 of speed change stator 7
The linear change of the high low head in footpath and gradually change.From the sectional view shown in Fig. 1, Fig. 2 and Fig. 3, the inwall of speed change stator 7
In a taper, interior bore gradually increases from the left side toward the right.
In the case that the oil mass that outside oil sources supplies hydraulic motor is constant, the oil drain quantity of the single plunger 61 of hydraulic motor
It is ram area and the product of stroke, the area of plunger 61 is constant, and the stroke of plunger 61 is bigger, the oil drain quantity of single plunger 61 is got over
Greatly, the oil drain quantity of overall motor is bigger, and the rotating speed of such hydraulic motor is lower；Conversely, the stroke of plunger 61 of hydraulic motor
Smaller, hydraulic motor rotary speed is higher；It follows that when as shown in Fig. 2 when steel ball 62 be located at speed change stator 7 leftward position when,
The stroke of plunger 61 is minimum, and the rotating speed of hydraulic motor is highest；When as shown in figure 3, when steel ball 62 is located at the right side of speed change stator 7
During position, the stroke of plunger 61 is maximum, and the rotating speed of hydraulic motor is minimum.Oil cylinder 8 includes piston 86, and piston 86 is determined with speed change
Son 7 is integrally formed fixation, and oil cylinder 8 promotes piston 86 to drive the movement of speed change stator 7 by oil pressure effect, due to speed change stator
Inner surface bore it is tapered on the whole, speed change stator is in moving process, and the stroke of plunger can be converted, and be adjusted with this
The rotating speed of whole hydraulic motor.
Plunger assembly 6 includes plunger 61 and steel ball 62, and steel ball 62 is rotatably positioned in the outer end of plunger 61.Plunger and steel ball
Integrally move radially, the main function of steel ball：Steel ball can freely be rolled in plunger outer end, and steel ball ensures plunger assembly radial motion
When with speed change stator conical inner curve linear contact.
Include the inner curve bigger diameter end 711 and inner curve miner diameter end for being distributed in axial both ends with taper inner curve raceway 71
712, inner curve bigger diameter end 711 is transitioned into inner curve miner diameter end 712 in gradual change mode, and inner curve bigger diameter end 711 includes
First imperial palace is small interior through R2 through R1 and first, and inner curve miner diameter end includes second largest interior small interior through r2, first through r1 and second
Imperial palace is more than second largest interior through the small interior drop through between r2 of r1 and second through the small interior drop through between R2 of R1 and first.Simultaneously
R1>R1, R2>r2.It is second largest it is interior got over hour through the small interior drop (difference) through between r2 of r1 and second, inner curve curve fluctuation gets over
It is small, as shown in Figure 7.On the contrary, when difference is bigger, the curve fluctuation of inner curve miner diameter end is bigger.
For the curve law of inner curve bigger diameter end or inner curve miner diameter end, curve (curved surface) and the tradition of the application
The negative camber of plunger piston hydraulic motor be identical, unlike the negative cambers of stator of conventional hydraulic motors be constant, post
The stroke of plug is also constant, therefore the rotating speed of hydraulic motor is also constant.And the introversion of the speed change stator 7 of present patent application
Face be conversion, the curve internal diameter from one end of speed change stator 7 toward the other end be change, and speed change stator 7 in axial direction by oil
The driving of cylinder 8 and move, this can cause the stroke of plunger 61 to change, so as to reach the purpose of hydraulic motor stepless speed change.
Oil cylinder 8 includes negative camber 81, and speed change stator 7 includes positive camber 72, negative camber 81 and the speed change stator of oil cylinder 8
7 positive camber 72 cooperates to limit the relative rotation of the radial direction in oil cylinder 8 of speed change stator 7.The inner surface and stator of oil cylinder 8
Outer surface cooperate so that stator can be moved in the axial direction, and can not have relative rotation.
Speedup hydraulic fluid port 82 and deceleration hydraulic fluid port 83 are provided with oil cylinder 8, the UNICOM of 82 and first oil pocket of speedup hydraulic fluid port 84 slows down oily
Mouth 83 and the UNICOM of the second oil pocket 85, when speedup 82 oil-feed of hydraulic fluid port, the first oil pocket 84 passes through piston 86 and promotes speed change stator 7 to one
Side is moved, and plunger assembly 6 is moved to inner curve miner diameter end 712 from the inner curve bigger diameter end 711 of speed change stator 7；When deceleration hydraulic fluid port
During 83 oil-feed, the second oil pocket 85 promotes speed change stator 7 to be moved to opposite side by piston 86, and plunger assembly 6 is from speed change stator 7
Inner curve miner diameter end 712 is moved to inner curve bigger diameter end 711.
The emphasis of the present invention is high low head by the big path of taper inner curve on speed change stator 7, that is, plunger
61 active strokes change, to realize the speed changing function of motor.Because the reciprocating motion of speed change stator in the axial direction is to pass through
The piston designed on speed change stator 7 gets off in the promotion of oil pressure realizes linear motion, and the stroke of plunger 61 is along along speed change stator 7
The high low head of curve and diametrically reciprocate, when speed change stator 7 moves along a straight line vertically, the big path of taper inner curve on stator
High low head gradually changing, the stroke of such plunger 61 is also gradually changing, because the area of plunger 61 is constant, post
The oil drain quantity of plug 61 is being gradually changed, and the rotating speed of motor is also gradually changing, and is so achieved that the variable speed work(of motor
Energy.
When speedup 82 oil-feed of hydraulic fluid port of oil cylinder 8, the closed chamber of piston 86 and oil cylinder 8 on speed change stator 7 is in oil pressure
Under promotion, the direction motion that speed change stator 7 diminishes towards ram travel, the rotating speed of motor linearly increases.
When deceleration 83 oil-feed of hydraulic fluid port of oil cylinder 8, the closed chamber of piston 86 and oil cylinder 8 on speed change stator 7 is in oil pressure
Lower speed change stator 7 is promoted to become big direction motion, the rotating speed linear reduction of motor towards ram travel.
The hydraulic motor provided by the present invention with stepless shift function and engineering transportation vehicle have been carried out in detail above
Thin to introduce, specific case used herein is set forth to the principle and embodiment of the present invention, and above example is said
It is bright be only intended to help understand the present invention and core concept.It should be pointed out that for those skilled in the art,
Under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these improve and modified
Fall into the protection domain of the claims in the present invention.
Claims (7)
1. the hydraulic motor with stepless shift function, it is characterised in that including motor protecgulum, back cover of motor, stator and and wheel
The rotor assembly of axle connection, described rotor assembly periphery is provided with radially movable multiple plunger assemblies, it is characterised in that
Also include being fixedly installed oil cylinder between motor protecgulum and back cover of motor, described stator is the speed change stator being axially movable,
Described oil cylinder can drive described stator shaft orientation to move forward and backward, and the inner ring of described speed change stator has the inner curve rolling of band taper
Road；Speed change stator by hydraulic oil cylinder driving tandem is moved vertically when, the stroke of plunger assembly with speed change stator band taper
The linear change of the high low head of size internal diameter of introversion trajectory and gradually change.
2. the hydraulic motor according to claim 1 with stepless shift function, it is characterised in that described oil cylinder includes
There is piston, described piston is integrally fixed with speed change stator, and oil cylinder promotes piston to drive speed change stator by oil pressure effect
It is mobile.
3. the hydraulic motor according to claim 1 with stepless shift function, it is characterised in that described plunger assembly
Including plunger and steel ball, described steel ball is rotatably positioned in the outer end of plunger.
4. the hydraulic motor according to claim 1 with stepless shift function, it is characterised in that in described band taper
Curve raceway includes being distributed in the inner curve bigger diameter end and inner curve miner diameter end at axial both ends, described inner curve bigger diameter end with
Gradual change mode is transitioned into inner curve miner diameter end, described inner curve bigger diameter end include the first large diameter and first it is small in
Footpath, described inner curve miner diameter end includes the second large diameter and the second small internal diameter, between the first large diameter and the first small internal diameter
Drop be more than drop between the second large diameter and the second small internal diameter.
5. the hydraulic motor according to claim 4 with stepless shift function, it is characterised in that described oil cylinder includes
There is a negative camber, described speed change stator includes positive camber, the positive camber of the negative camber and speed change stator of described oil cylinder is mutual
Coordinate to limit the relative rotation of speed change stator radial direction in oil cylinder.
6. the hydraulic motor according to claim 5 with stepless shift function, it is characterised in that set on described oil cylinder
Speedup hydraulic fluid port and deceleration hydraulic fluid port, deceleration hydraulic fluid port and the first oil pocket UNICOM, speedup hydraulic fluid port and the second oil pocket UNICOM are equipped with, when the oil that slows down
During mouth oil-feed, the first oil pocket promotes speed change stator to be moved to side by piston, and the inner curve of plunger assembly from speed change stator is small
Footpath end is moved to inner curve bigger diameter end, when speedup hydraulic fluid port oil-feed, and the second oil pocket promotes speed change stator to opposite side by piston
Mobile, plunger assembly is moved to inner curve miner diameter end from the inner curve bigger diameter end of speed change stator.
7. engineering transportation vehicle, including the hydraulic motor as described in claim 1-6 is any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710738562.XA CN107327438B (en) | 2017-08-25 | 2017-08-25 | Hydraulic motor with stepless speed change function and engineering transport vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710738562.XA CN107327438B (en) | 2017-08-25 | 2017-08-25 | Hydraulic motor with stepless speed change function and engineering transport vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107327438A true CN107327438A (en) | 2017-11-07 |
| CN107327438B CN107327438B (en) | 2024-05-28 |
Family
ID=60224901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710738562.XA Active CN107327438B (en) | 2017-08-25 | 2017-08-25 | Hydraulic motor with stepless speed change function and engineering transport vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN107327438B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552930A (en) * | 2019-09-23 | 2019-12-10 | 宁波恒通诺达液压股份有限公司 | Hydraulic motor with high climbing performance and engineering transport vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191212787A (en) * | 1912-05-30 | 1913-09-01 | Lewis Ernest Hopkins | Improvements in Rotary Pumps and Hydraulic Motors Available as a Variable Speed and Reversing Organ. |
| JPS562480A (en) * | 1979-06-20 | 1981-01-12 | Hitachi Constr Mach Co Ltd | Radial pump motor |
| CN202326003U (en) * | 2011-11-21 | 2012-07-11 | 宁波德辰液压科技有限公司 | Multiple-function inner curve type radial plunger hydraulic motor |
| CN106286181A (en) * | 2016-10-10 | 2017-01-04 | 杨健 | A kind of hydraulic variable flow mechanism |
| CN107013678A (en) * | 2015-12-01 | 2017-08-04 | 株式会社神崎高级工机制作所 | Micro- traction drive unit, Hyaulic infinite variable speed mechanism and hydraulic means |
| CN207093501U (en) * | 2017-08-25 | 2018-03-13 | 宁波恒通诺达液压股份有限公司 | Hydraulic motor and engineering transportation vehicle with electrodeless variable-speed function |
-
2017
- 2017-08-25 CN CN201710738562.XA patent/CN107327438B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191212787A (en) * | 1912-05-30 | 1913-09-01 | Lewis Ernest Hopkins | Improvements in Rotary Pumps and Hydraulic Motors Available as a Variable Speed and Reversing Organ. |
| JPS562480A (en) * | 1979-06-20 | 1981-01-12 | Hitachi Constr Mach Co Ltd | Radial pump motor |
| CN202326003U (en) * | 2011-11-21 | 2012-07-11 | 宁波德辰液压科技有限公司 | Multiple-function inner curve type radial plunger hydraulic motor |
| CN107013678A (en) * | 2015-12-01 | 2017-08-04 | 株式会社神崎高级工机制作所 | Micro- traction drive unit, Hyaulic infinite variable speed mechanism and hydraulic means |
| CN106286181A (en) * | 2016-10-10 | 2017-01-04 | 杨健 | A kind of hydraulic variable flow mechanism |
| CN207093501U (en) * | 2017-08-25 | 2018-03-13 | 宁波恒通诺达液压股份有限公司 | Hydraulic motor and engineering transportation vehicle with electrodeless variable-speed function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552930A (en) * | 2019-09-23 | 2019-12-10 | 宁波恒通诺达液压股份有限公司 | Hydraulic motor with high climbing performance and engineering transport vehicle |
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| Publication number | Publication date |
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| CN107327438B (en) | 2024-05-28 |
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