CN108916624A - Proportional valve and quantitative injection system - Google Patents
Proportional valve and quantitative injection system Download PDFInfo
- Publication number
- CN108916624A CN108916624A CN201810922939.1A CN201810922939A CN108916624A CN 108916624 A CN108916624 A CN 108916624A CN 201810922939 A CN201810922939 A CN 201810922939A CN 108916624 A CN108916624 A CN 108916624A
- Authority
- CN
- China
- Prior art keywords
- oil
- oil duct
- motion bar
- duct
- plunger shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 20
- 239000007924 injection Substances 0.000 title claims abstract description 20
- 239000006071 cream Substances 0.000 claims abstract description 35
- 239000012530 fluid Substances 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 4
- 239000004519 grease Substances 0.000 description 35
- 238000010586 diagram Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- 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
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/30—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the oil being fed or carried along by another fluid
-
- 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
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
-
- 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
- F16N—LUBRICATING
- F16N25/00—Distributing equipment with or without proportioning devices
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a kind of proportional valve and quantitative injection system, proportional valve includes valve body, and valve body is provided with oil inlet and oil outlet, and the plunger shaft in valve body is connected to oil outlet；Piston component includes piston rod and the piston for being fixed on piston rod, and piston rod can be moved back and forth along plunger shaft and shoe cream room；First oil duct is connected to shoe cream room；Second oil duct is connected to plunger shaft；One end of oil inlet oil duct is connected to oil inlet, and the other end of oil inlet oil duct is connected to the first oil duct to form oil-feed port；Interface channel is provided in motion bar, motion bar can move so that interface channel has the connected state of the first oil duct of connection and the second oil duct and disconnects the off-state of the first oil duct and the second oil duct, wherein, when interface channel is in connected state, motion bar can close oil-feed port, when interface channel is in an off state, motion bar opens oil-feed port.The present invention has the advantages that metered injection is high-efficient, performance is stable, easy to operate, high degree of automation.
Description
Technical field
The present invention relates to field of mechanical technique, more particularly to a kind of proportional valve and quantitative injection system.
Background technique
In the industries such as bearing machining, automobile manufacture, mechanical equipment needs quantitative filling grease.But at present on the market
Quantitative filling grease quantitative valve member it is more, when assembling, takes time and effort, and cooperate movement work between component and component
When easily occur loosening, displacement, cause quantitative discharging not accurate, and be easy to scratch sealing ring when plunger is mobile, cause leakage
Problem.
Summary of the invention
It is of the existing technology the purpose of the invention is to overcome the problems, such as, a kind of proportional valve and metered injection system are provided
System, proportional valve have the advantages that high-efficient, performance is stable, easy to operate, high degree of automation.
To achieve the goals above, one aspect of the present invention provides a kind of proportional valve, including valve body, the valve body be provided with into
Hydraulic fluid port and oil outlet are provided in the valve body：Plunger shaft, the plunger shaft are connected to the oil outlet；Shoe cream room；Piston group
Part, the piston component include piston rod and the piston for being fixed on the piston rod, and the piston rod can be along the plunger shaft
It is moved back and forth with the shoe cream room；First oil duct, first oil duct are connected to the shoe cream room；Second oil duct, described second
Oil duct is connected to the plunger shaft；One end of oil inlet oil duct, the oil inlet oil duct is connected to the oil inlet, the oil inlet oil duct
The other end be connected to first oil duct to form oil-feed port；And motion bar, interface channel is provided in the motion bar,
The motion bar can move so that the interface channel has the connected state for being connected to first oil duct and second oil duct
State and the off-state for disconnecting first oil duct and second oil duct, wherein when the interface channel is in connected state
When state, the motion bar can close the oil-feed port, and when the interface channel is in an off state, the motion bar is beaten
Open the oil-feed port.
Preferably, it is provided in the plunger shaft for along from the plunger shaft to piston rod described in the shoe cream room bias
Spring.
Preferably, the interface channel is arranged along the length direction of the motion bar, and the motion bar can be along from height
Direction movement is spent so that the interface channel has the connected state and the off-state.
Preferably, the plunger shaft is provided with piston hole, and the plunger shaft is connected by the piston hole and the shoe cream room
It is logical, pass through the piston hole to the piston rod packing.
Preferably, oil supply gallery is provided in the valve body, the oil supply gallery connects the other end of the oil inlet oil duct
With first oil duct, the oil-feed port is arranged on the oil supply gallery, and the motion bar is partially disposed at the fuel feeding
It can move in channel and along the oil supply gallery length direction.
Preferably, the motion bar includes first segment and second segment along its length, the first segment and the fuel feeding
The inner sidewall in channel is clearance fit, and the inner sidewall of the second segment and the oil supply gallery is interference fit.
Second aspect of the present invention provides a kind of quantitative injection system, including nozzle and above-mentioned proportional valve, the nozzle with
The oil outlet of the proportional valve connects, and the oil inlet is used to connect external fluid source.
Preferably, the quantitative injection system includes oil inlet pipe, and the oil inlet passes through the oil inlet pipe and the fluid
Source connects, and is provided with accumulator on the oil inlet pipe.
Preferably, the quantitative injection system includes air inlet pipe and flowline, the flowline connect the oil outlet with
The nozzle, one end of the air inlet pipe are connect with the nozzle, and the other end of the air inlet pipe is used to connect external gas source.
Preferably, throttle valve is provided in the air inlet pipe.
Through the above technical solutions, in use, the grease in shoe cream room is logical when the interface channel is in connected state
The first oil duct, interface channel, the second oil duct is crossed to enter in plunger shaft.Then, motion bar is mobile, and the interface channel is made to be in disconnected
Open state, and motion bar opens the oil-feed port, and external grease enters and flows through oil inlet oil duct, the first oil duct from oil inlet
It eventually arrives in shoe cream room, the grease flowed into shoe cream room is increasing, and the pressure of the grease in shoe cream room constantly increases, finally
It pushes piston rod to be located at the part in shoe cream room, so that piston rod is moved to plunger shaft and the grease in extrusion piston chamber, will live
The grease filled in chamber is discharged from oil outlet.The amount of the grease in shoe cream room is depended entirely on due to the amount of the grease in plunger shaft,
And the capacity of the grease of shoe cream room is fixed, therefore can guarantee that the amount of the grease entered in plunger shaft each time is all the same.
Motion bar is moved once and again and switches interface channel between connected state and off-state, to reach continuous, quantitative
The purpose of ground discharge grease.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the preferred embodiment of proportional valve of the invention；
Fig. 2 is the structural schematic diagram that interface channel is in an off state in Fig. 1；
Fig. 3 is the structural schematic diagram that interface channel is in connected state in Fig. 1；
Fig. 4 is the structural schematic diagram of the preferred embodiment of quantitative injection system of the invention.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In description of the invention, it should be noted that the instructions such as term "vertical", "upper", "lower", "horizontal" " left and right "
Orientation or positional relationship are orientation based on the figure or positional relationship, and being merely for convenience of description, this is practical and simplified
Description, rather than indicate or imply that signified device or element must have a particular orientation, with specific orientation construction
And operation, therefore be not considered as limiting the invention.
As shown in Figure 1, proportional valve of the invention, including valve body 1, valve body 1 are provided with oil inlet 2 and oil outlet 3, valve body 1
In be provided with：Plunger shaft 4, plunger shaft 4 are connected to oil outlet 3；Shoe cream room 5；Piston component, piston component include 6 He of piston rod
It is fixed on the piston of piston rod 6, piston rod 6 can be moved back and forth along plunger shaft 4 and shoe cream room 5；First oil duct 7, the first oil duct 7
It is connected to shoe cream room 5；Second oil duct 8, the second oil duct 8 are connected to plunger shaft 4；Oil inlet oil duct 9, one end of oil inlet oil duct 9 with into
Hydraulic fluid port 2 is connected to, and the other end of oil inlet oil duct 9 is connected to the first oil duct 7 to form oil-feed port；And motion bar 10, motion bar 10
It is inside provided with interface channel 11, motion bar 10 can move so that interface channel 11 has the first oil duct 7 of connection and the second oil duct 8
Connected state and disconnect the first oil duct 7 and the second oil duct 8 off-state, wherein when interface channel 11 is in connected state
When state, motion bar 10 can close oil-feed port, and when interface channel 11 is in an off state, motion bar 10 opens oil-feed port.
In use, as shown in figure 3, the grease in shoe cream room 5 passes through the first oil duct 7, connection when interface channel 11 is in connected state
Channel 11, the second oil duct 8 enter in plunger shaft 4.Then, motion bar 10 is mobile, as shown in Fig. 2, interface channel 11 is made to be in disconnected
Open state, and motion bar 10 opens oil-feed port, and external grease enters and flows through oil inlet oil duct 9, the first oil duct from oil inlet 2
7 eventually arrive in shoe cream room 5, and the grease flowed into shoe cream room 5 is increasing, and the pressure of the grease in shoe cream room 5 constantly increases,
It is final that piston rod 6 is pushed to be located at the part in shoe cream room 5, so that piston rod 6 is into the movement of plunger shaft 4 and extrusion piston chamber 4
Grease in plunger shaft 4 is discharged grease from oil outlet 3.Since the amount of the grease in plunger shaft 4 depends entirely on shoe cream room 5
In grease amount, and the capacity of the grease of shoe cream room 5 is fixed, therefore can guarantee to enter in plunger shaft 4 each time
The amount of grease is all the same.Motion bar 10 is moved once and again and cuts interface channel 11 between connected state and off-state
Change, with achieve the purpose that it is continuous, grease is quantitatively discharged.
Common, interface channel 11 is arranged along the length direction of motion bar 10, in order to can be realized interface channel 11
Switch between connected state and off-state, the present invention provides two kinds of embodiments：In one embodiment, 10 quilt of motion bar
It is designed as can move up and down (i.e. length direction of the moving direction of motion bar 10 perpendicular to interface channel 11) to close or beat
Oil-feed port is opened, moves up interface channel 11 therewith and by the first oil duct 7 and the second oil
Road 8 is connected, and moves down interface channel 11 to be detached from the first oil duct 7 and the second oil duct
8.In a preferred embodiment of the invention, motion bar 10 is designed to move along length direction so that interface channel 11 has
There are connected state and off-state, as shown in Figures 2 and 3, i.e., when motion bar 10 is moved to the left, interface channel 11 is by first
Oil duct 7 and the second oil duct 8 disconnect, and when motion bar 10 moves right, interface channel 11 is by the first oil duct 7 and the second oil duct
8 connections.
It should be understood that the driving method of motion bar 10 can be various forms of, such as manual actuation, pneumatic driving
Dynamic, electromagnetic drive etc., in the present invention, it is preferred to, motion bar 10 is designed to using solenoid-driven, i.e. motion bar 10 is electricity
The spool of magnet valve.
In order to keep piston rod 6 mobile to shoe cream room 5, it is preferable that be provided in plunger shaft 4 and be used for edge from plunger shaft 4
To the spring of 5 biases piston bar 6 of shoe cream room.Certainly, the elastic force of spring is a kind of force mechanism, and other structures can also be arranged
Such as the structures such as connecting rod, cam push piston rod 6 to shoe cream room 5, this will not be repeated here.
It can be connected to by channel between plunger shaft 4 and shoe cream room 5, alternatively, in the preferred embodiment of the present invention
In, plunger shaft 4 is provided with piston hole, and plunger shaft 4 is connected to by piston hole with shoe cream room 5, and piston rod 6 sealingly extends through piston
Hole.In this way, the appearance of plunger shaft 4 and shoe cream room 5 can be increased as much as possible in the case where proportional valve overall volume is constant
Product.
In general, oil inlet oil duct 9 and the first oil duct 7 are arranged, in order to enable the grease in oil inlet oil duct 9 spaced apartly
It enough flows into the first oil duct 7, it is preferable that oil supply gallery 12 is provided in valve body 1, oil supply gallery 12 connects the another of oil inlet oil duct 9
One end and the first oil duct 7, oil-feed port are arranged on oil supply gallery 12, and motion bar 10 is partially disposed in oil supply gallery 12 and energy
It is enough to be moved along 12 length direction of oil supply gallery.
In order to enable motion bar 10 to open or close oil-feed port, the present invention provides a kind of embodiments：Oil supply gallery
12 inner wall is provided with cricoid protrusion to form oil-feed port, and the side wall of motion bar 10 is provided with cricoid boss portion, works as activity
When bar 10 moves along its length, boss portion can be by oil-feed port institute's backstop to block oil-feed port.It should be understood that motion bar
10 design form is not limited to that the present invention also provides another embodiments preferably：Motion bar
10 include first segment and second segment along its length, and the inner sidewall of first segment and oil supply gallery 12 is clearance fit, second segment
Inner sidewall with oil supply gallery 12 is interference fit.When the inner sidewall that motion bar 10 is moved to first segment and oil supply gallery 12 matches
When conjunction, since the inner sidewall of first segment and oil supply gallery 12 is clearance fit, grease can be logical by first segment and fuel feeding
Gap between the inner sidewall in road 12 is flowed between oil inlet oil duct 9 and the first oil duct 7, when motion bar 10 be moved to second segment with
When the inner sidewall of oil supply gallery 12 matches, since the inner sidewall of second segment and oil supply gallery 12 is interference fit, second
The lateral wall of section is contacted with the inner sidewall of oil supply gallery 12 to close oil supply gallery 12, prevent grease is from oil inlet oil duct 9
It is flowed between the first oil duct 7.Also, when motion bar 10, which is moved to first segment, to be matched with the inner sidewall of oil supply gallery 12,
Interface channel 11 in motion bar 10 is in an off state, when motion bar 10 is moved to the inner sidewall of second segment Yu oil supply gallery 12
When matching, the interface channel 11 in motion bar 10 is in connected state.
As shown in figure 4, the present invention also provides a kind of quantitative injection system, including nozzle 20 and above-mentioned proportional valve, nozzle
20 connect with the oil outlet 3 of proportional valve, and oil inlet 2 is used to connect external fluid source.The system is of the invention due to having used
Proportional valve, allow to it is continuous, grease is quantitatively sprayed from nozzle 20.
For the pressure stability in guarantee system, while increasing grease jeting effect, it is preferable that quantitative injection system packet
Oil inlet pipe is included, oil inlet 2 is connect by oil inlet pipe with fluid source, and accumulator 30 is provided on oil inlet pipe.Accumulator 30 can be deposited
Enough pressure greases are stored up, so that entire injection can be continuous.
In order to enable the grease ejected in nozzle 20 that there is dispersion shape, it is preferable that quantitative injection system include into
Tracheae and flowline, flowline connect oil outlet 3 and nozzle 20, and one end of air inlet pipe is connect with nozzle 20, air inlet pipe it is another
It holds for connecting external gas source.External gas source provides air-flow, air-flow and grease into tracheae and converges at nozzle 20, air-flow
Grease is sprayed from nozzle 20 in the form of dispersion shape, setting in this way can make the grease sprayed generate preferably lubrication shape
State, and can be with cleaning nozzle 20.
In order to adjust the dispersion shape form for the grease that nozzle 20 is sprayed, it is preferable that be provided with throttling in air inlet pipe
Valve 40.By throttle valve 40 adjust air-flow intensity, so as to control grease dispersion shape form.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited thereto.At this
It, can be with various simple variants of the technical solution of the present invention are made, in order to avoid unnecessary in the range of the technology design of invention
It repeats, the invention will not be further described in various possible combinations.But these simple variants and combination equally should be considered as
Content disclosed in this invention, all belongs to the scope of protection of the present invention.
Claims (10)
1. a kind of proportional valve, including valve body (1), the valve body (1) is provided with oil inlet (2) and oil outlet (3), and feature exists
In being provided in the valve body (1)：
Plunger shaft (4), the plunger shaft (4) are connected to the oil outlet (3)；
Shoe cream room (5)；
Piston component, the piston component include piston rod (6) and the piston for being fixed on the piston rod (6), the piston rod
(6) it can be moved back and forth along the plunger shaft (4) and the shoe cream room (5)；
First oil duct (7), first oil duct (7) are connected to the shoe cream room (5)；
Second oil duct (8), second oil duct (8) are connected to the plunger shaft (4)；
One end of oil inlet oil duct (9), the oil inlet oil duct (9) is connected to the oil inlet (2), the oil inlet oil duct (9) it is another
One end is connected to first oil duct (7) to form oil-feed port；And
Motion bar (10) is provided with interface channel (11) in the motion bar (10), the motion bar (10) can move so that
The interface channel (11) has the connected state for being connected to first oil duct (7) and second oil duct (8) and disconnects institute
State the off-state of the first oil duct (7) and second oil duct (8), wherein when the interface channel (11) is in connected state
When, the motion bar (10) can close the oil-feed port, when the interface channel (11) is in an off state, the work
Lever (10) opens the oil-feed port.
2. proportional valve according to claim 1, which is characterized in that be provided in the plunger shaft (4) for along from described
Spring of the plunger shaft (4) to piston rod (6) described in the shoe cream room (5) bias.
3. proportional valve according to claim 1, which is characterized in that the interface channel (11) is along the motion bar (10)
Length direction setting, the motion bar (10) can move along length direction so that the interface channel (11) is with described
Connected state and the off-state.
4. proportional valve according to claim 1, which is characterized in that the plunger shaft (4) is provided with piston hole, the piston
Chamber (4) is connected to by the piston hole with the shoe cream room (5), and the piston rod (6) sealingly extends through the piston hole.
5. proportional valve according to claim 1, which is characterized in that be provided with oil supply gallery (12), institute in the valve body (1)
The other end and first oil duct (7), the oil-feed port for stating oil supply gallery (12) connection oil inlet oil duct (9) are arranged in institute
It states on oil supply gallery (12), the motion bar (10) is partially disposed in the oil supply gallery (12) and can be along the fuel feeding
Channel (12) length direction is mobile.
6. proportional valve according to claim 5, which is characterized in that the motion bar (10) includes first along its length
Section and second segment, the inner sidewall of the first segment and the oil supply gallery (12) are clearance fit, the second segment and the confession
The inner sidewall of oily channel (12) is interference fit.
7. a kind of quantitative injection system, which is characterized in that including determining described in any one of nozzle (20) and claim 1-6
Valve is measured, the nozzle (20) connect with the oil outlet (3) of the proportional valve, and the oil inlet (2) is used to connect external fluid
Source.
8. quantitative injection system according to claim 7, which is characterized in that the quantitative injection system includes oil inlet pipe,
The oil inlet (2) is connect by the oil inlet pipe with the fluid source, and accumulator (30) are provided on the oil inlet pipe.
9. quantitative injection system according to claim 8, which is characterized in that the quantitative injection system include air inlet pipe with
Flowline, the flowline connect the oil outlet (3) and the nozzle (20), one end of the air inlet pipe and the nozzle
(20) it connects, the other end of the air inlet pipe is used to connect external gas source.
10. quantitative injection system according to claim 9, which is characterized in that be provided with throttle valve in the air inlet pipe
(40)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810922939.1A CN108916624A (en) | 2018-08-14 | 2018-08-14 | Proportional valve and quantitative injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810922939.1A CN108916624A (en) | 2018-08-14 | 2018-08-14 | Proportional valve and quantitative injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108916624A true CN108916624A (en) | 2018-11-30 |
Family
ID=64405365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810922939.1A Pending CN108916624A (en) | 2018-08-14 | 2018-08-14 | Proportional valve and quantitative injection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108916624A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2028408A1 (en) * | 2006-06-15 | 2009-02-25 | Beijing CMRC Science & Technology Development Co., Ltd. | A valve-type oil feeder |
| WO2015149208A1 (en) * | 2014-03-31 | 2015-10-08 | 深圳市智行单轴双轮驱动技术有限公司 | Steering motor |
| WO2015149207A1 (en) * | 2014-03-31 | 2015-10-08 | 深圳市智行单轴双轮驱动技术有限公司 | Shock absorption mechanism of steering motor |
-
2018
- 2018-08-14 CN CN201810922939.1A patent/CN108916624A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2028408A1 (en) * | 2006-06-15 | 2009-02-25 | Beijing CMRC Science & Technology Development Co., Ltd. | A valve-type oil feeder |
| CN101449096A (en) * | 2006-06-15 | 2009-06-03 | 北京中冶华润科技发展有限公司 | Valve-type oil feeder |
| WO2015149208A1 (en) * | 2014-03-31 | 2015-10-08 | 深圳市智行单轴双轮驱动技术有限公司 | Steering motor |
| WO2015149207A1 (en) * | 2014-03-31 | 2015-10-08 | 深圳市智行单轴双轮驱动技术有限公司 | Shock absorption mechanism of steering motor |
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