CN107191424A - Rotary motor valve group end cap and rotary motor - Google Patents
Rotary motor valve group end cap and rotary motor Download PDFInfo
- Publication number
- CN107191424A CN107191424A CN201710567867.9A CN201710567867A CN107191424A CN 107191424 A CN107191424 A CN 107191424A CN 201710567867 A CN201710567867 A CN 201710567867A CN 107191424 A CN107191424 A CN 107191424A
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- CN
- China
- Prior art keywords
- oil
- valve
- rotary motor
- repairing
- oil duct
- 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
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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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/006—Modular components with multiple uses, e.g. kits for either normally-open or normally-closed valves, interchangeable or reprogrammable manifolds
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Valves (AREA)
Abstract
The present invention relates to a kind of rotary motor valve group end cap and rotary motor, wherein, rotary motor valve group end cap is used for the housing installed in rotary motor, and it includes：Valve group bottom plate and the valve block being arranged on valve group bottom plate, valve block are arranged between the oil return oil duct of the oil-feed oil duct of work oil inlet and the oil return opening that works provided with work oil inlet, work oil return opening and repairing mouthful, repairing mouth.The actuator port of rotary motor and repairing mouth are arranged on individually integrated valve block by rotary motor valve group end cap, and repairing mouth is arranged between the oil return oil duct of the oil-feed oil duct of work oil inlet and the oil return opening that works, repairing runner effectively shortens, rotary motor is when braking is emptied, it has been effectively reduced the repairing time, improve repairing efficiency, it is to avoid motor is emptied the noise caused and abrasion.
Description
Technical field
The present invention relates to technical field of engineering machinery, more particularly to a kind of rotary motor valve group end cap and rotary motor.
Background technology
Frequently, load moment change impacts continuous, serious shadow to composite move to rotary motor when engineering machinery is due to work
Ring complete machine handling and rotary motor life-span.When motor load is raised suddenly, motor buffer overflow valve is opened, and reduces motor
The compression shock of revolution；When motor braking, motor oil-feed port fuel cut-off, but because inertial motor continues to turn round, at this moment motor
In pump condition, because fuel feeding is not enough, motor is easy to generation and is emptied, and causes motor wear and noise.Other whole machine installation is empty
Between it is limited, high is required to the circumferential installation dimension of rotary motor.Therefore, effectively shorten motor repairing runner, improve repairing efficiency and
Revolution buffering efficiency, reduces rotary motor in circumferential installation dimension, turning round steady reliability to lifting excavator has important meaning
Justice.
Existing hydraulic rotary motor by motor oil inlet and oil return mouth, repairing mouth, pressure tap, revolution buffer overflow valve, unidirectional mend
The components such as fuel tap are arranged on motor shell, are opened up inside motor shell inside the runner communicated with motor cover plate, cover plate
Also runner is cast, the runner that housing is connected with cover plate is compressed by end face O-ring and sealed.Motor inlet hydraulic oil passes through in housing
Portion's runner enters motor cover plate runner, then enters valve plate by motor cover plate runner.When load shock pressure is excessive, revolution
Trimmer valve opens overflow, and flows to motor oil return opening by the runner of enclosure interior.When motor braking, motor high-pressure mouth fuel feeding is not
, there is negative pressure in foot, can open the repairing check valve on housing by the repairing mouthful on housing and give motor high-pressure mouth repairing.
In existing technical scheme, because the components such as motor hydraulic fluid port, buffer overflow valve and unidirectional Fill valve are all disposed within
On housing, cause the circumferential size of housing larger, installation space is small, it is possible to interference occurs；Runner between housing and cover plate
By O-ring self-tightening sealing, there is oil leak risk；Motor shell and cover plate inner oil way structure are complicated, and flowpath pressure loss is big,
Difficulty of processing is high；Repairing runner is complicated, and the repairing time is long, and the noise that motor fuel feeding deficiency is produced is big, and abrasion is high, influence motor
Stability and reliability.
The content of the invention
To overcome above technological deficiency, present invention solves the technical problem that being to provide a kind of rotary motor valve group end cap and returning
Turn motor, motor can be prevented effectively from and be emptied the noise caused and abrasion in braking.
In order to solve the above technical problems, the invention provides a kind of rotary motor valve group end cap, for installed in revolution horse
On the housing reached, it includes：Valve group bottom plate and the valve block being arranged on valve group bottom plate, valve block are provided with work oil inlet, worked back
Hydraulic fluid port and repairing mouthful, repairing mouth are arranged between the oil return oil duct of the oil-feed oil duct of work oil inlet and the oil return opening that works.
Further, repairing mouth is positioned close at the position of work oil inlet and work oil return opening.
Further, valve block is additionally provided with the first unidirectional Fill valve and the second unidirectional Fill valve, the first unidirectional Fill valve and
The oil-out of two unidirectional Fill valves is communicated with oil-feed oil duct and oil return oil duct respectively, the first unidirectional Fill valve and the second unidirectional repairing
Repairing oil duct of the oil inlet of valve with repairing mouthful is communicated.
Further, repairing oil duct, oil-feed oil duct and the oil return oil duct of repairing mouthful are linear pattern oil duct.
Further, repairing oil duct with oil-feed oil duct and the perpendicular arrangement of oil return oil duct.
Further, the first unidirectional Fill valve inserting is arranged on oil-feed oil duct and the intersection with repairing oil duct, and second is single
Inserted to Fill valve and be arranged on oil return oil duct and the intersection with repairing oil duct.
Further, valve block is additionally provided with the first revolution buffer overflow valve and the second revolution buffer overflow valve, and the first revolution is slow
The oil inlet for rushing overflow valve and the second revolution buffer overflow valve is communicated with oil-feed oil duct and oil return oil duct respectively, the first revolution buffering
Repairing oil duct of the overfall of overflow valve and the second revolution buffer overflow valve with repairing mouthful is communicated.
Further, the first revolution buffer overflow valve and the second revolution buffer overflow valve are inserted and are arranged on valve block.
Further, the setting direction of the first revolution buffer overflow valve and the second revolution buffer overflow valve and the first unidirectional benefit
The setting direction of fuel tap and the second unidirectional Fill valve is parallel or vertical.
Further, valve group bottom plate is provided with the dowel hole coordinated with housing.
Present invention also offers a kind of rotary motor, it includes above-mentioned rotary motor valve group end cap.
Thus, based on above-mentioned technical proposal, rotary motor valve group end cap of the present invention is by the actuator port and benefit of rotary motor
Hydraulic fluid port is arranged on individually integrated valve block, and repairing mouth is arranged on the oil-feed oil duct of work oil inlet and returning for work oil return opening
Between oil duct, repairing runner effectively shortens, and rotary motor has been effectively reduced the repairing time, improved when braking is emptied
Repairing efficiency, it is to avoid motor is emptied the noise caused and abrasion.The rotary motor that the present invention is provided also correspondingly has above-mentioned
Advantageous effects.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is only used for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the overall structure diagram of the embodiment of rotary motor valve group end cap one of the present invention；
Fig. 2 is the polycrystalline substance schematic diagram of the embodiment of rotary motor valve group end cap one of the present invention；
Fig. 3 is the valve block internal view of the embodiment of rotary motor valve group end cap one of the present invention；
Fig. 4 is installing the sectional view of valve member for the valve block of the embodiment of rotary motor valve group end cap one of the present invention；
Fig. 5 is the principle schematic diagram of rotary motor valve group end cap of the present invention；
Fig. 6 is installing the sectional view of valve member for the valve block of another embodiment of rotary motor valve group end cap of the present invention.
Each reference is represented respectively：
1st, valve block；2nd, valve group bottom plate；3rd, work oil inlet；4th, work oil return opening；5th, the second unidirectional Fill valve；6,6 ',
Two-revolution buffer overflow valve；7,7 ', first revolution buffer overflow valve；8th, repairing mouthful；9th, oil return opening surveys hydraulic fluid port；10th, oil inlet is surveyed
Oil；11st, motor leakage hole；12nd, dowel hole；13rd, oil return waist type groove；14th, oil-feed waist type groove；15th, valve plate alignment pin；16、
Dowel hole；17th, the first check valve plug-in opening；18th, the second check valve plug-in opening；19th, first flow；20th, second flow channel；21、
First overflow valve plug-in opening；22nd, the second overflow valve plug-in opening；23rd, third flow channel；24th, the 4th runner；25th, oil inlet plastics are blocked up；
26th, oil return opening plastics are blocked up；27th, the first unidirectional Fill valve.
Embodiment
Below by drawings and examples, technical scheme is described in further detail.
The embodiment of the present invention is for the ease of the design to the present invention, the technical problem solved, constitutes skill
The technical characteristic of art scheme and the technique effect brought have further description.It should be noted that for these embodiment party
The explanation of formula does not constitute limitation of the invention.In addition, the technology being related in the embodiment of present invention described below is special
It can be just mutually combined as long as levying and not constituting conflict each other.
In a schematical embodiment of the invention, as shown in figs. 1 to 6, rotary motor valve group end cap is used to be arranged on
On the housing of rotary motor, it includes：It is right centered on valve group bottom plate 2 and the valve block 1 being arranged on valve group bottom plate 2, valve group bottom plate 2
Claim structure, be laid with the mounting hole with housing in the surrounding of valve group bottom plate 2, valve block 1 is provided with work oil inlet 3, work oil return
Mouth 4, repairing mouthful 8, oil return opening survey hydraulic fluid port 9, oil inlet survey oil 10 and motor leakage hole 11, repairing mouth 8 is arranged on work oil-feed
Between the oil return oil duct of the oil-feed oil duct of mouth 3 and the oil return opening 4 that works.
In the schematical embodiment, rotary motor valve group end cap sets the actuator port of rotary motor and repairing mouthful 8
Put on individually integrated valve block 1, and repairing mouthful 8 is arranged on the oil return of the oil-feed oil duct and work oil return opening 4 of work oil inlet 3
Between oil duct, so that repairing runner effectively shortens, rotary motor has been effectively reduced the repairing time when braking is emptied,
Improve repairing efficiency, it is to avoid motor is emptied the noise caused and abrasion.
Wherein, specifically or preferably, as shown in Fig. 2 the lower surface of valve group bottom plate 2 is provided with the end face being engaged with valve plate
And oil groove, specifically include：The dowel hole 12 that coordinates with the valve plate of housing, 16, valve plate alignment pin 15, oil return waist type groove
13rd, oil-feed waist type groove 14, motor leakage hole 11.With reference to shown in Fig. 2 and Fig. 3, oil-feed waist type groove 14 passes through first flow 19 and work
Make oil inlet 3 to communicate, oil return waist type groove 13 is communicated by second flow channel 20 with work oil return opening 4.
Specifically or preferably, as shown in Figure 4 and Figure 6, repairing mouthful 8 is positioned close to work oil inlet 3 and work oil return
At the position of mouth 4, be so conducive to further effectively shortening repairing runner.Similarly, repairing oil duct with oil-feed oil duct and return
The perpendicular arrangement of oil duct, vertically arranged mode is effectively shortened repairing oil duct so that repairing runner more enters one on the whole
Shorten on step ground.
As shown in figure 4, valve block 1 is additionally provided with the first unidirectional Fill valve 5 of unidirectional Fill valve 27 and second, the first unidirectional Fill valve
27 and second the oil-out of unidirectional Fill valve 5 communicated respectively with oil-feed oil duct and oil return oil duct, the first unidirectional Fill valve 27 and
Repairing oil duct of the oil inlet of two unidirectional Fill valves 5 with repairing mouthful 8 is communicated.The repairing oil duct of repairing mouthfuls 8, oil-feed oil duct and return
Oil duct is linear pattern oil duct.Preferably, the first unidirectional Fill valve 27 inserting be arranged on oil-feed oil duct and with repairing oil duct
Intersection, the second unidirectional inserting of Fill valve 5 is arranged on oil return oil duct and the intersection with repairing oil duct, so that compact conformation
And the unidirectional logical oil of the first unidirectional Fill valve 5 of unidirectional Fill valve 27 and second is easily achieved, inserting arrangement is easy to disassemble and changes,
With higher exploitativeness.
As the improvement to above-described embodiment or preferably, as shown in figure 4, valve block 1 is additionally provided with the first revolution buffer overflow valve 7
With second revolution buffer overflow valve 6, first revolution buffer overflow valve 7 and second revolution buffer overflow valve 6 oil inlet respectively with
Oil-feed oil duct and oil return oil duct are communicated, and the first revolution buffer overflow valve 7,7 ' and second turns round the overfall of buffer overflow valve 6,6 '
Communicated by the 4th runner 24 and third flow channel 23 with repairing mouthful 8.Further, the first revolution buffer overflow valve 7 and second
Revolution buffer overflow valve 6, which is inserted, to be arranged on valve block 1, and inserting arrangement is easy to disassemble and changes, with higher exploitativeness.
As shown in figure 4, the setting direction and the first list of the first revolution revolution buffer overflow valve 6 of buffer overflow valve 7 and second
It is vertical to the setting direction of the unidirectional Fill valve 5 of Fill valve 27 and second, can also be as shown in fig. 6, the first revolution buffer overflow valve
7 ' and second turn round the setting direction of buffer overflow valve 6 ' and the setting side of the first unidirectional Fill valve 5 of unidirectional Fill valve 27 and second
To parallel, both set-up modes advantageously allow compacter on rotary motor valve group end cover structure.
As shown in figure 5, when the oil-feed of work oil inlet 3, work the oil return of oil return opening 4, motor turning anticlockwise, GA, GB difference
For the pressure tap of work oil inlet 3 and work oil return opening 4, overflow when the input pressure of work oil inlet 3 turns round buffering more than first
When flowing the set pressure of valve 7, the first revolution buffer overflow valve 7 opens overflow, and an overflow oil return part opens the second unidirectional repairing
Valve 5 returns to work oil return opening 4, and another part is returned directly to repairing mouthful 8, because work oil inlet 3 is high-pressure mouth, the first unidirectional benefit
Fuel tap 27 will not be opened.When motor is braked, due to motor inertia, work oil inlet 3 is emptied generation negative pressure, passes through repairing mouthful 8
And the first unidirectional Fill valve 27 is opened to the repairing of work oil inlet 3.When the work oil-feed of oil return opening 4, work the oil return of oil inlet 3, horse
Up to revolution clockwise, principle is with consistent counterclockwise.
Present invention also offers a kind of rotary motor, it includes above-mentioned rotary motor valve group end cap.Because the present invention is returned
Turn motor valve group end cap be able to can be prevented effectively from motor braking when be emptied the noise caused and abrasion, correspondingly, the present invention
Rotary motor also has above-mentioned advantageous effects, will not be repeated here.
The course of work of rotary motor of the present invention is：It is high during motor normal work not overflow when the work oil-feed of oil inlet 3
Force feed enters oil-feed oil duct by work oil inlet 3, then enters oil-feed waist type groove 14 by first flow 19, and motor oil return is led to
Cross oil return waist type groove 13, second flow channel 20, oil return oil duct and the work oil return of oil return opening 4.When motor has load pressure impact, work
Make the pressure rise of oil inlet 3 more than the first revolution set pressure of buffer overflow valve 7, the first revolution buffer overflow valve 7 opens overflow
To buffer motor pressure impact, an overflow oil return part is by flowing the 4th runner 24 and third flow channel 23 into repairing oil duct and beating
Open the second unidirectional Fill valve 5 and enter oil return oil duct, because work oil inlet 3 is high-pressure mouth, the first unidirectional Fill valve 27 will not be opened
Open；Overflow oil return another part directly passes through 8 oil returns of repairing mouthful.When motor is braked, work the fuel cut-off of oil inlet 3, but by
In motor movement inertia, motor may proceed to revolution, and at this moment motor is in pump condition, and work oil inlet 3 is pump condition inlet port, work
Pressure can be had because fuel feeding is not enough and produces negative pressure between the unidirectional Fill valve 27 of at this moment repairing mouthful 8 and first by making oil inlet 3
Difference, the hydraulic oil of repairing mouthfuls 8 by repairing oil duct and can open the first unidirectional Fill valve 27 to the repairing of work oil inlet 3.
In summary, rotary motor valve group end cap of the present invention has following advantageous effects：
First, repairing runner is short, when motor braking is emptied, can run through integrated valve group repairing mouthful and carry out repairing, subtract
Lack the repairing time, improved repairing efficiency, it is to avoid motor is emptied the noise caused and abrasion, and reduced motor back
Oil pressure loses, and reduces the risk of motor oil inlet and oil return oil leak, improves motor reliability；
Second, when motor has compression shock, revolution buffering overflow is opened, and overflow oil return by repairing mouthful and can be returned simultaneously
Hydraulic fluid port connects fuel tank, improves motor revolution buffering spillover efficiency and reliability；
3rd, revolution buffer overflow valve is installed with motor oil inlet and oil return mouthful coaxial line, unidirectional Fill valve and motor oil inlet and oil return mouthful
Right angle setting, compact conformation effectively reduces the circumferential installation dimension of rotary motor, is easy to whole machine installation, meets small-sized excavation
The characteristics of machine design structure is compact；
4th, inner flow passage is simple, and the pressure loss is small, effectively reduces processing cost；
5th, convenient to install using cartridge-type buffer overflow valve and Fill valve, interchangeability is good；
6th, integrated valve group is provided with the dowel hole coordinated with motor shell, is conducive to integrated valve group and motor shell
Between cooperation.
Above in association with embodiment be described in detail for embodiments of the present invention, but the present invention is not limited to be retouched
The embodiment stated.For a person skilled in the art, in the case where not departing from the principle and connotation of the present invention
These embodiments are carried out with a variety of changes, modification, equivalence replacement and modification to still fall within protection scope of the present invention.
Claims (11)
1. a kind of rotary motor valve group end cap, for the housing installed in rotary motor, it is characterised in that including：Valve group bottom
Plate (2) and the valve block (1) being arranged on the valve group bottom plate (2), the valve block (1) is provided with work oil inlet (3), work oil return
Mouth (4) and repairing mouthful (8), the repairing mouthful (8) is arranged on the oil-feed oil duct of the work oil inlet (3) and the work is returned
Between the oil return oil duct of hydraulic fluid port (4).
2. rotary motor valve group end cap according to claim 1, it is characterised in that the repairing mouthful (8) is positioned close to
At the position of the work oil inlet (3) and the work oil return opening (4).
3. rotary motor valve group end cap according to claim 1, it is characterised in that it is single that the valve block (1) is additionally provided with first
To Fill valve (27) and the second unidirectional Fill valve (5), the first unidirectional Fill valve (27) and the second unidirectional Fill valve (5)
Oil-out communicated respectively with the oil-feed oil duct and the oil return oil duct, the first unidirectional Fill valve (27) and described second
Repairing oil duct of the oil inlet of unidirectional Fill valve (5) with the repairing mouthful (8) is communicated.
4. rotary motor valve group end cap according to claim 1, it is characterised in that the repairing oil duct of the repairing mouthful (8),
The oil-feed oil duct and the oil return oil duct are linear pattern oil duct.
5. rotary motor valve group end cap according to claim 4, it is characterised in that the repairing oil duct with the oil-feed
Oil duct and the perpendicular arrangement of the oil return oil duct.
6. rotary motor valve group end cap according to claim 2, it is characterised in that the first unidirectional Fill valve (27) is inserted
Dress is arranged on the oil-feed oil duct and described and repairing oil duct intersection, and second unidirectional Fill valve (5) inserting is arranged on
The oil return oil duct and described and repairing oil duct intersection.
7. rotary motor valve group end cap according to claim 2, it is characterised in that the valve block (1) is additionally provided with first time
Turn buffer overflow valve (7,7 ') and the second revolution buffer overflow valve (6,6 '), the first revolution buffer overflow valve (7,7 ') and institute
The oil inlet for stating the second revolution buffer overflow valve (6,6 ') is communicated with the oil-feed oil duct and the oil return oil duct respectively, and described
The overfall of single-revolution buffer overflow valve (7,7 ') and the second revolution buffer overflow valve (6,6 ') with the repairing mouthful (8)
Repairing oil duct communicate.
8. rotary motor valve group end cap according to claim 7, it is characterised in that the first revolution buffer overflow valve
(7,7 ') and the second revolution buffer overflow valve (6,6 ') inserting are arranged on the valve block (1).
9. rotary motor valve group end cap according to claim 8, it is characterised in that the first revolution buffer overflow valve
Setting direction and the described first unidirectional Fill valve (27) of (7,7 ') and the second revolution buffer overflow valve (6,6 ') and described
The setting direction of second unidirectional Fill valve (5) is parallel or vertical.
10. rotary motor valve group end cap according to claim 1, it is characterised in that the valve group bottom plate (2) is provided with and institute
State the dowel hole (12,16) of housing cooperation.
11. a kind of rotary motor, it is characterised in that including the rotary motor valve group end cap described in any one of claim 1~10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710567867.9A CN107191424A (en) | 2017-07-13 | 2017-07-13 | Rotary motor valve group end cap and rotary motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710567867.9A CN107191424A (en) | 2017-07-13 | 2017-07-13 | Rotary motor valve group end cap and rotary motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107191424A true CN107191424A (en) | 2017-09-22 |
Family
ID=59883617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710567867.9A Pending CN107191424A (en) | 2017-07-13 | 2017-07-13 | Rotary motor valve group end cap and rotary motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107191424A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10281103A (en) * | 1997-04-02 | 1998-10-20 | Hitachi Constr Mach Co Ltd | Hydraulic control device |
| CN201301466Y (en) * | 2008-11-13 | 2009-09-02 | 贵州詹阳动力重工有限公司 | Rotary oil supply loop for hydraulic excavator |
| CN102704524A (en) * | 2012-04-19 | 2012-10-03 | 华南理工大学 | Rotary energy saving system of hydraulic excavator |
| CN102777438A (en) * | 2012-08-17 | 2012-11-14 | 邓开忠 | Multifunctional integrated valve bank of hydraulic motor |
| CN202577438U (en) * | 2012-04-19 | 2012-12-05 | 华南理工大学 | Hydraulic excavator gyroscopic moment limiting device |
| CN103671311A (en) * | 2013-11-21 | 2014-03-26 | 山河智能装备股份有限公司 | Motor energy saving system of open type hydraulic system |
-
2017
- 2017-07-13 CN CN201710567867.9A patent/CN107191424A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10281103A (en) * | 1997-04-02 | 1998-10-20 | Hitachi Constr Mach Co Ltd | Hydraulic control device |
| CN201301466Y (en) * | 2008-11-13 | 2009-09-02 | 贵州詹阳动力重工有限公司 | Rotary oil supply loop for hydraulic excavator |
| CN102704524A (en) * | 2012-04-19 | 2012-10-03 | 华南理工大学 | Rotary energy saving system of hydraulic excavator |
| CN202577438U (en) * | 2012-04-19 | 2012-12-05 | 华南理工大学 | Hydraulic excavator gyroscopic moment limiting device |
| CN102777438A (en) * | 2012-08-17 | 2012-11-14 | 邓开忠 | Multifunctional integrated valve bank of hydraulic motor |
| CN103671311A (en) * | 2013-11-21 | 2014-03-26 | 山河智能装备股份有限公司 | Motor energy saving system of open type hydraulic system |
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Application publication date: 20170922 |
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| RJ01 | Rejection of invention patent application after publication |