CN107191513A - New-energy automobile gear box hydraulic formula brake apparatus - Google Patents
New-energy automobile gear box hydraulic formula brake apparatus Download PDFInfo
- Publication number
- CN107191513A CN107191513A CN201710480180.1A CN201710480180A CN107191513A CN 107191513 A CN107191513 A CN 107191513A CN 201710480180 A CN201710480180 A CN 201710480180A CN 107191513 A CN107191513 A CN 107191513A
- Authority
- CN
- China
- Prior art keywords
- matrix part
- power transmission
- transmission shaft
- hydraulic
- gear box
- 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
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
- F16D65/186—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes with full-face force-applying member, e.g. annular
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of new-energy automobile gear box hydraulic formula brake apparatus, including matrix part；The power transmission shaft on matrix part is rotatablely arranged at by clutch shaft bearing；Brake hub is placed on the brake hub on power transmission shaft admittedly, and the active friction plate radially protruded is distributed with its outer wall circumference；It is installed on matrix part, and the actuator cover being coaxially disposed with power transmission shaft, it is axially disposed on its inwall to have chute, driven friction disk is distributed with the chute, the driven friction disk is set with active friction plate space crossings；The functional unit on matrix part is supported on by flexible member；And hydraulic package, its at least one piston for including hydraulic cylinder and being arranged on the hydraulic cylinder, the piston can promote functional unit to overcome flexible member elastic force driven friction disk is combined with active friction plate.The present invention can quickly and reliably realize the braking to power transmission shaft, with novelty simple in construction, and retardation efficiency is high, the advantages of stability is good.
Description
Technical field
The invention belongs to technical field of mechanical transmission, and in particular to a kind of new-energy automobile gear box hydraulic formula braking dress
Put.
Background technology
During such as pure electric automobile or hybrid car travel, to meet the operation need under its different operating mode
Will, the output of part power transmission shaft in cut-out transmission system is may require that often.In the prior art, the parts such as clutch are typically utilized
The separation of driving and driven part is realized, conventional clutch is in separation process, because operating force is not ideal enough so that separation is not
It is enough thorough in time, part additional wear is easily caused, service life is influenceed.In addition, by the structure of clutch separation operating mechanism
Limitation, inevitably unbalance loading, while unstable wear, also makes working state of system become pole not in operation
It is stable.
The content of the invention
To solve above technical problem, the invention provides a kind of new-energy automobile gear box hydraulic formula brake apparatus, energy
Enough when needed, the braking to power transmission shaft will quickly and reliably be realized.
Its technical scheme is as follows：
A kind of new-energy automobile gear box hydraulic formula brake apparatus, including matrix part；By clutch shaft bearing rotationally
It is arranged at the power transmission shaft on matrix part；Brake hub is placed on the brake hub on power transmission shaft admittedly, is distributed with its outer wall circumference along footpath
To outwardly active friction plate；It is installed on matrix part, and the actuator cover being coaxially disposed with power transmission shaft, on its inwall
It is axially disposed to have chute, driven friction disk is distributed with the chute, the driven friction disk and active friction plate space crossings
Set；The functional unit on matrix part is supported on by flexible member；And hydraulic package, it includes hydraulic cylinder and setting
At least one piston on the hydraulic cylinder, the piston can promote functional unit to overcome flexible member elastic force to make from dynamic friction
Piece is combined with active friction plate.
Using above structure, functional unit is promoted using the driven friction disk and brake hub on actuator cover with hydraulic way
On active friction plate coordinate, with lock or release power transmission shaft, when need limitation drive axis when, can be reliably by its armful
Extremely, it is to avoid skid, compared to conventional brake or clutch, its retardation efficiency is higher, and stability is more preferable.
For convenience of the installation of hydraulic cylinder, described matrix part one end is provided with cavity, and hydraulic cylinder is embedded in the cavity, and with
Matrix part is fixed, and is supported on by second bearing on power transmission shaft, so, during drive axis, hydraulic cylinder and matrix part
It will not rotate therewith, facilitate fuel feeding.
The flexible member is at least two stage clips for being symmetrically distributed in matrix part radial outside, to ensure to operating portion
The secure support of part, for convenience of the installation of stage clip, is installed with thrust back-up ring, one end of flexible member and the thrust on matrix part
One side end face of back-up ring is abutted.
Preferably, the functional unit includes integrally formed linking arm and brake disc, and the linking arm is fixed with piston
Connection, brake disc is stretched out by linking arm one end and abutted with driven friction disk, and described matrix part is provided with and supplies linking arm
The via passed through.The structure is able to ensure that the reliable installation of functional unit, and meets its functional requirement with relatively simple structure.
Further, the linking arm is in hollow tubular structure, and its middle part has the circular fin projected radially inwards,
The one end of the flexible member away from thrust back-up ring is connected on the circular fin, so, flexible member two ends respectively with thrust
Back-up ring and circular fin are abutted, and make its installation relatively reliable.
To realize the motion of hydraulic package, the hydraulic cylinder is connected with pump in hydraulic system, the hydraulic pressure system by pipeline
Pump includes oil cylinder and the depression bar that is slidably mounted in the oil cylinder on system, described depression bar one end pass be connected with after oil cylinder it is electronic
Push rod, the structure is moved with static pressure mode band piston in hydraulic cylinder, compared to the hydraulic mechanism of traditional dynamic pressure type, it is not necessary to set
Relative complex vane pump of structure etc. is put, while simplifying structure, is also more saved.
Beneficial effect：Using the new-energy automobile gear box hydraulic formula brake apparatus of above technical scheme, rapidly can may be used
The braking to power transmission shaft is realized by ground, with novelty simple in construction, retardation efficiency is high, the advantages of stability is good.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the structural representation of matrix part in the present invention；
Fig. 3 is the structural representation of brake hub in the present invention；
Fig. 4 is the structural representation of actuator cover in the present invention；
Fig. 5 is the structural representation of functional unit in the present invention；
Fig. 6 is the mounting structure schematic diagram of hydraulic package and functional unit in the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, by the following examples, and with reference to attached
Figure, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain this hair
It is bright, it is not intended to limit the present invention.
A kind of new-energy automobile gear box hydraulic formula brake apparatus as shown in Figure 1, including matrix part 1 and pass through first
Bearing 2a is located in the power transmission shaft 2 on matrix part 1, and power transmission shaft 2 can be relatively rotated with matrix part 1.
The actuator cover 4 for being fixed with and being cooperated with brake hub 3 on brake hub 3, matrix part 1 is installed with power transmission shaft 2,
When actuator cover 4 and brake hub 3 interact, power transmission shaft 2 can be made to be combined as a whole with matrix part 1, to limit transmission
Axle 2 is rotated.
Functional unit 5 is installed on matrix part 1, the functional unit 5 is supported on matrix part 1 by flexible member 51
On, meanwhile, hydraulic package 6 is provided with matrix part 1, to promote functional unit 5 to move, under normality, actuator cover 4 with
Brake hub 3 is separated from each other, and when the action of hydraulic package 6 promotes functional unit 5 to move, the functional unit 5 can overcome bullet
The property elastic force of element 51 makes actuator cover 4 be combined with brake hub 3, is in the lock state power transmission shaft 2.
Fig. 2 shows the concrete structure of matrix part 1, and it is substantially in hollow discoid, and middle part has wears for power transmission shaft 2
There is the axis hole 1a crossed, one end end face the cavity 11 caved inward to be used for the hydraulic cylinder 61 for installing hydraulic package 6, in axis hole 1a
Oil sealing 7 is arranged with, oil sealing 7 is located between clutch shaft bearing 2a and the hydraulic cylinder 61 of hydraulic package, the isolation of hydraulic package 6 is avoided
Leakage.
Matrix part 1 has installation portion 1b in one end end face away from cavity 11, and installation portion 1b is by the end face of matrix part 1
Cave inward to be formed, for installing actuator cover 4.On the circumferential outer intermarginal transition portion 1c of axis hole 1a and matrix part 1
The via 13 passed through provided with the linking arm 5a for functional unit 5, being also provided with installation screw 14 in the outside of via 13 is used for system
Dynamic outer cover 4 is fixed with matrix part 1.
Fig. 3 and Fig. 4 are respectively the structural representation of brake hub 3 and actuator cover 4, wherein, brake hub 3 is a hub-like portion
Part, middle part has the power transmission shaft mounting hole 3a coordinated with power transmission shaft 2, is solidly set on using power transmission shaft mounting hole 3a on power transmission shaft 2,
And positioned by flat key, enable brake hub 3 with the synchronous axial system of power transmission shaft 2, multiple active friction plates are arranged with brake hub 3
31, active friction plate 31 and can slide axially with the synchronous rotary of brake hub 3 along the brake hub 3.
Actuator cover 4 is in hollow disc-shaped structure, and one end end face has connecting screw hole 43, to connect with matrix part
Connect, provided with the chute 4a axially extended on its inwall 40, quantity and the phase of active friction plate 31 are set with chute 4a
Corresponding driven friction disk 41, driven friction disk 41 and the setting of the space crossings of active friction plate 31, i.e. active friction plate 31 are extremely
Small part region can be embedded in the gap between adjacent two panels driven friction disk 41, and driven friction disk 41 can be in edge in chute 4a
Actuator cover 4 is slid axially, but not is rotated against with the generation of actuator cover 4, and gear is passed through in the axial end position of actuator cover 4
Ring 42 carries out axial limiting to driven friction disk 41.
When functional unit 5 promotes driven friction disk 41 to be slided in chute 4a, driven friction disk 41 and active can be made
Friction plate 31 is close to and combined so that power transmission shaft 2 is locked.
The structure as shown in figure 5, functional unit 5 is formed in one, including linking arm 5a in hollow tubular and by the connection
Arm 5a one end end face radially inwardly extending brake disc 5b, brake disc 5b and close functional unit 5 driven friction disk 41 are tight
There is the fin 5a1 projected radially inwards on patch, linking arm 5a axial directions middle part inwall, to facilitate elastic elements 51.
It can be seen that flexible member 51 is symmetrically and evenly distributed in matrix part 1 week outwards two-by-two to be multiple with reference to Fig. 1 and Fig. 6
The stage clip of side, its one end is abutted with the thrust back-up ring 12 being solidly set on matrix part 1, and the other end is connected to linking arm 5a fin
On 5a1.
Hydraulic package 6 includes hydraulic cylinder 61 and 4 work for being evenly distributed on hydraulic cylinder 61 and coordinating with the hydraulic cylinder 61
Plug 62, certainly, the quantity of piston 62 is referred to part dimension and required braking force reasonable selection.Hydraulic cylinder 61 is embedded in safety
In 11, and it is rotatably supported at by second bearing 2b on power transmission shaft 2, so, when power transmission shaft 2 is rotated, hydraulic cylinder 61 is not
Meeting concomitant rotation, and fixed with matrix part 1.
Hydraulic cylinder 61 is equipped with corresponding chamber 61a in each position of piston 62 of correspondence, and each chamber 61a passes through unified oil duct
Fuel feeding, twice annular groove is machined with each chamber 61a inwalls, and installs ultra-high voltage sealing ring 65 and realizes piston 62 and hydraulic cylinder
Sealing between 61.
The linking arm 5a of functional unit 5 is fixedly attached on piston 62, and piston pin can also be installed on piston 62, connection
Arm 5a is connected using the structure of similar engine link with piston 62, when piston 62 is slided in hydraulic cylinder 61, can be driven
Functional unit 5 is axially movable.
Hydraulic cylinder 61 is connected with pump 63 in hydraulic system by a pipeline, and pump 63 includes the He of oil cylinder 631 in the hydraulic system
The depression bar 632 being slidably matched with the oil cylinder 631, the one end of depression bar 632 passes after oil cylinder 631 and is connected with electric pushrod 64.
When electric pushrod 64 is acted, depression bar 632 can be promoted to be slided in oil cylinder 631, so that oil pressure is transferred into hydraulic pressure
In cylinder 61, piston 62 is slid in and out, and then promote functional unit 5 to overcome the elastic force of flexible member 51 to make driven friction disk 41 and master
Movable friction plate 31 is combined, and realizes the locking of power transmission shaft 2, and electric pushrod 64 is moved backward, then functional unit 5 is made in flexible member 51
Lower self-return is used, power transmission shaft 2 can be rotated relative to matrix part 1.
It should be noted that above example is only to illustrate technical solution of the present invention rather than restriction technologies scheme, although
Applicant is explained in detail with reference to preferred embodiment to the present invention, it will be understood by those within the art that, those are right
Modification or equivalent substitution that technical solution of the present invention is carried out, it is impossible to depart from the objective and scope of the technical program, all should cover
Among scope of the invention as claimed.
Claims (6)
1. a kind of new-energy automobile gear box hydraulic formula brake apparatus, it is characterised in that including：
Matrix part (1)；
Power transmission shaft (2), it is rotatablely arranged on matrix part (1) by clutch shaft bearing (2a)；
Brake hub (3), the brake hub (3) is placed on power transmission shaft (2) admittedly, is distributed with what is radially protruded in its outer wall circumference
Active friction plate (31)；
Actuator cover (4), the actuator cover (4) is installed on matrix part (1), and is coaxially disposed with power transmission shaft (2), its inwall
It is upper it is axially disposed have chute (4a), driven friction disk (41) is distributed with the chute (4a), the driven friction disk (41) with
Active friction plate (31) space crossings are set；
Functional unit (5), it is supported on matrix part (1) by flexible member (51)；And
Hydraulic package (6), its at least one piston (62), institute for including hydraulic cylinder (61) and being arranged on the hydraulic cylinder (61)
Stating piston (62) can promote functional unit (5) to overcome flexible member (51) elastic force to make driven friction disk (41) and active friction plate
(31) combine.
2. new-energy automobile gear box hydraulic formula brake apparatus according to claim 1, it is characterised in that：Described matrix portion
Part (1) one end is provided with cavity (11), and hydraulic cylinder (61) is embedded in the cavity (11), and fixed with matrix part (1), and passes through
Second bearing (2b) is supported on power transmission shaft (2).
3. new-energy automobile gear box hydraulic formula brake apparatus according to claim 1, it is characterised in that：The elasticity member
Part (51) is that thrust gear is installed with least two stage clips for being symmetrically distributed in matrix part (1) radial outside, matrix part (1)
Enclose (12), one end of flexible member (51) is abutted with a side end face of the thrust back-up ring (12).
4. new-energy automobile gear box hydraulic formula brake apparatus according to claim 3, it is characterised in that：The operating portion
Part (5) includes integrally formed linking arm (5a) and brake disc (5b), and the linking arm (5a) is fixedly connected with piston (62), makes
Moving plate (5b) is stretched out by linking arm (5a) one end and abutted with driven friction disk (41), and described matrix part (1) is provided with
The via (13) passed through for linking arm (5a).
5. new-energy automobile gear box hydraulic formula brake apparatus according to claim 4, it is characterised in that：The linking arm
(5a) is in hollow tubular structure, and its middle part has the circular fin (5a1) projected radially inwards, and the flexible member (51) is remote
One end from thrust back-up ring (12) is connected on the circular fin (5a1).
6. new-energy automobile gear box hydraulic formula brake apparatus according to any one of claim 1 to 5, its feature exists
In：The hydraulic cylinder (61) is connected with pump (63) in pump in hydraulic system (63), the hydraulic system by pipeline includes oil cylinder
(631) and the depression bar (632) that is slidably mounted in the oil cylinder (631), described depression bar (632) one end passes oil cylinder (631)
After be connected with electric pushrod (64).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017102120054 | 2017-04-01 | ||
| CN201710212005.4A CN106895096A (en) | 2017-04-01 | 2017-04-01 | New-energy automobile gear box hydraulic formula brake apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107191513A true CN107191513A (en) | 2017-09-22 |
Family
ID=59194333
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710212005.4A Pending CN106895096A (en) | 2017-04-01 | 2017-04-01 | New-energy automobile gear box hydraulic formula brake apparatus |
| CN201710480180.1A Pending CN107191513A (en) | 2017-04-01 | 2017-06-22 | New-energy automobile gear box hydraulic formula brake apparatus |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710212005.4A Pending CN106895096A (en) | 2017-04-01 | 2017-04-01 | New-energy automobile gear box hydraulic formula brake apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN106895096A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482154A (en) * | 2009-02-11 | 2009-07-15 | 中国矿业大学 | Hydraulic brake |
| CN102494055A (en) * | 2011-12-06 | 2012-06-13 | 天津工程机械研究院 | Multi-disk wet-type brake for loading machine |
| CN202685786U (en) * | 2012-08-17 | 2013-01-23 | 莱芜市东岳永盛车桥有限公司 | Wet-type braking integrated rear axle of coal mine car |
| CN203035814U (en) * | 2013-01-09 | 2013-07-03 | 襄阳彼勒液压机械有限公司 | Normally closed wet-type parking brake |
| JP2014055617A (en) * | 2012-09-11 | 2014-03-27 | Hitachi Constr Mach Co Ltd | Hydraulic brake device of work vehicle |
| CN203939896U (en) * | 2014-05-06 | 2014-11-12 | 殷浩东 | A kind of vehicle bridge wheel multi-disc disc type wet brake for limit |
| CN204213215U (en) * | 2014-09-28 | 2015-03-18 | 宁波广天赛克思液压有限公司 | A kind of multiple disc hydraulic break for transmission shaft braking |
| CN104675889A (en) * | 2014-12-19 | 2015-06-03 | 徐州徐工传动科技有限公司 | Braking structure of engineering machinery drive axle |
| CN204942333U (en) * | 2015-09-08 | 2016-01-06 | 襄阳彼勒液压机械有限公司 | Pitch fast integrated type wet type Parking Brake |
| CN106438767A (en) * | 2016-08-25 | 2017-02-22 | 肥城众力机械有限公司 | Central parking brake device for coal mine engineering vehicle |
-
2017
- 2017-04-01 CN CN201710212005.4A patent/CN106895096A/en active Pending
- 2017-06-22 CN CN201710480180.1A patent/CN107191513A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482154A (en) * | 2009-02-11 | 2009-07-15 | 中国矿业大学 | Hydraulic brake |
| CN102494055A (en) * | 2011-12-06 | 2012-06-13 | 天津工程机械研究院 | Multi-disk wet-type brake for loading machine |
| CN202685786U (en) * | 2012-08-17 | 2013-01-23 | 莱芜市东岳永盛车桥有限公司 | Wet-type braking integrated rear axle of coal mine car |
| JP2014055617A (en) * | 2012-09-11 | 2014-03-27 | Hitachi Constr Mach Co Ltd | Hydraulic brake device of work vehicle |
| CN203035814U (en) * | 2013-01-09 | 2013-07-03 | 襄阳彼勒液压机械有限公司 | Normally closed wet-type parking brake |
| CN203939896U (en) * | 2014-05-06 | 2014-11-12 | 殷浩东 | A kind of vehicle bridge wheel multi-disc disc type wet brake for limit |
| CN204213215U (en) * | 2014-09-28 | 2015-03-18 | 宁波广天赛克思液压有限公司 | A kind of multiple disc hydraulic break for transmission shaft braking |
| CN104675889A (en) * | 2014-12-19 | 2015-06-03 | 徐州徐工传动科技有限公司 | Braking structure of engineering machinery drive axle |
| CN204942333U (en) * | 2015-09-08 | 2016-01-06 | 襄阳彼勒液压机械有限公司 | Pitch fast integrated type wet type Parking Brake |
| CN106438767A (en) * | 2016-08-25 | 2017-02-22 | 肥城众力机械有限公司 | Central parking brake device for coal mine engineering vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106895096A (en) | 2017-06-27 |
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