CN208518812U - A kind of hydraulic motor floating port plate structure - Google Patents
A kind of hydraulic motor floating port plate structure Download PDFInfo
- Publication number
- CN208518812U CN208518812U CN201820958845.5U CN201820958845U CN208518812U CN 208518812 U CN208518812 U CN 208518812U CN 201820958845 U CN201820958845 U CN 201820958845U CN 208518812 U CN208518812 U CN 208518812U
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- China
- Prior art keywords
- motor
- cylindrical hole
- valve plate
- spool
- hole
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Abstract
The utility model discloses a kind of hydraulic motor floating port plate structures, it is characterized in that, including motor cover, motor cover is equipped with cylindrical hole, butterfly spring, the second sealing ring, spool are equipped in cylindrical hole, second sealing ring is set between spool and motor cover cylindrical hole, the end face of spool one end and the surfaces mate of valve plate.The utility model is simple and reasonable, stable and reliable for performance, when cylinder body force unbalance, which generates, has error in inclination or manufacture, the valve plate in the utility model structure can have certain floating and from capability, not only it had been avoided that valve plate was worn, but also the volumetric efficiency for guaranteeing motor can be sealed.
Description
Technical field
The utility model relates to a kind of hydraulic motor floating port plate structures, are suitable for engineering machinery, belong to hydraulic horse
Up to class product technical field.
Background technique
In construction machinery industry, flow mill damage is one of the most common failure of hydraulic motor damage.Common at present is hydraulic
Motor configuration is to allow between cylinder body and valve plate establish certain thickness oil film, makes cylinder body floating under the action of its hydraulic pressure reverse thrust
It is dynamic, with flow disk detachment.However the running motor or rotary motor in excavator starting, work and braking when, by load and
The influence of inertia, the pressure instantaneous variation inside motor is very big, cylinder body it is possible that force unbalance and generate tilt phenomenon,
Lead to that effective oil film cannot be established between cylinder body and valve plate, even results in valve plate premature abrasion.
Summary of the invention
Technical problem to be solved by the utility model is: cylinder body inclines when solving common hydraulic motor work and braking
Tiltedly, the problem of leading to flow mill damage.
In order to solve the above-mentioned technical problem, there is provided a kind of floatings of hydraulic motor to match for the technical solution of the utility model
Flow table structure, which is characterized in that including motor cover, motor cover is equipped with cylindrical hole, and butterfly spring, second close is equipped in cylindrical hole
Seal, spool, the second sealing ring are set between spool and motor cover cylindrical hole, and the end face of spool one end and the surface of valve plate are tight
Close fit.
Preferably, the valve plate is equipped with V-type point slot and kidney slot, the median plane of valve plate be equipped with throttle orifice with
And the coaxial cylindrical hole with throttle orifice；Piston, sealing ring, piston and cylindrical hole clearance fit are equipped in cylindrical hole；Sealing ring is set
Between cylindrical hole and piston.
Preferably, V-type point slot, four kidney slots penetrated through, four V-type point slots and four there are four being set on the valve plate
A kidney slot is symmetrical about the median plane of valve plate two-by-two respectively；Throttle orifice and two circles there are two being set on the median plane of valve plate
Post holes.
Preferably, the spool is equipped with spool inner hole；Cylinder body is equipped with cylinder body plunger hole；Motor cover is equipped with motor
Lid internal galleries, motor cover internal galleries include the oil inlet oil duct of motor and the oil outlet oil duct of motor；Motor cover interior oil
Road, spool inner hole, kidney slot, cylinder body plunger hole form access.
Preferably, cylindrical hole there are four setting on the motor cover, four cylindrical holes are symmetrical, two of them cylindrical hole
It is communicated with the oil inlet oil duct of motor, the oil outlet oil duct of other two cylindrical hole and motor communicates.
The utility model is simple and reasonable, stable and reliable for performance, when cylinder body force unbalance generates in inclination or manufacture
When having error, the valve plate in the utility model structure can have certain floating and from capability, both be avoided that valve plate was ground
Damage, and the volumetric efficiency for guaranteeing motor can be sealed.
Detailed description of the invention
Fig. 1 is valve plate and piston and sealing ring assembling schematic diagram；
Fig. 2 a is the longitudinal sectional view of Fig. 1；
Fig. 2 b is the partial enlarged view in Fig. 2 a at I；
Fig. 3 is a kind of schematic diagram of hydraulic motor floating port plate structure；
Fig. 4 is the partial enlarged view in Fig. 3 at I.
Specific embodiment
To be clearer and more comprehensible the utility model, hereby with preferred embodiment, and attached drawing is cooperated to be described in detail below.
The utility model is a kind of hydraulic motor floating port plate structure, as shown in Figure 3, Figure 4 comprising motor cover 4,
Processing is there are four cylindrical hole C on motor cover 4, and symmetrical, two of them are communicated with the oil inlet oil duct of motor, other two and
The oil outlet oil duct of motor communicates；Butterfly spring 5, the second sealing ring 6, spool 7 are respectively provided in four cylindrical hole C, second is close
Seal 6 is mounted between spool 7 and motor cover cylindrical hole C, the end face of 7 one end of spool and the surfaces mate of valve plate 1.
Valve plate 1 is equipped with kidney slot B；Spool 7 is equipped with spool inner hole F；Cylinder body 8 is equipped with cylinder body plunger hole G；Motor
Lid 4 is equipped with motor cover internal galleries E, and motor cover internal galleries E includes the oil inlet oil duct of motor and the oil outlet oil of motor
Road；Motor cover internal galleries E, spool inner hole F, kidney slot B, cylinder body plunger hole G form access.
According to the size of kidney slot B, the quantity of kidney slot B can for 4 or 4 it is several again.
In the present embodiment, shown in a as shown in Figure 1, Figure 2, set on valve plate 1 there are four V-type point slot A, four perforation kidney slots
The median plane of B, four V-type point slot A and four kidney slot B respectively two-by-two about valve plate 1 is symmetrical, kidney slot B and spool inner hole F
It is connected；Throttle orifice D there are two setting in the median plane of valve plate 1 as shown in Figure 2 b, while being equipped with two coaxial with throttle orifice D
A cylindrical hole C；Piston 2, sealing ring 3 are in the cylindrical hole C of valve plate 1, and 3 outer diameter of sealing ring and cylindrical hole C cooperate, sealing ring
The major diameter fit (i.e. sealing ring 3 is set between cylindrical hole C and piston 2) of 3 internal diameters and piston 2, piston 2 and valve plate cylindrical hole C
Clearance fit plays the role of compensator or trimmer pressure, balance cylinder block.When cylinder body plunger hole high and low pressure is converted, oil liquid passes through valve plate 1
On throttle orifice D after enter plunger shaft, push piston 2 to move down, compression shock can be effectively reduced in the mobile space of piston 2,
Guarantee the stress balance of cylinder body 8.
As shown in Figure 3, Figure 4, hydraulic oil flows into the kidney-shaped of valve plate 1 through spool inner hole F by motor cover internal galleries E
In slot B, under the action of butterfly spring 5, a transverse plane of spool 7 is closely developed with the surface of valve plate 1, while 7 He of spool
The second sealing ring 6 between motor cover cylindrical hole C ensure that oil liquid will not be revealed；Hydraulic oil by 1 kidney slot B of valve plate exists
Into in cylinder body plunger hole G, oil film is established between cylinder body 8 and valve plate 1, while pushing motor rotation.When 8 stress of cylinder body tilts
When, valve plate 1 adjusts the location status of itself according to cylinder body tilt quantity, reaches and keep away under the action of hydraulic coupling and butterfly spring 5
Exempt from the purpose of flow mill damage.
Claims (5)
1. a kind of hydraulic motor floating port plate structure, which is characterized in that including motor cover (4), motor cover (4) is equipped with circle
Post holes (C), cylindrical hole (C) is interior to be equipped with butterfly spring (5), the second sealing ring (6), spool (7), and the second sealing ring (6) is set to valve
Between core (7) and motor cover cylindrical hole (C), the end face of spool (7) one end and the surfaces mate of valve plate (1).
2. a kind of hydraulic motor floating port plate structure as described in claim 1, which is characterized in that the valve plate
(1) it is equipped with V-type point slot (A) and kidney slot (B), the median plane of valve plate (1) is equipped with throttle orifice (D) and and throttle orifice
(D) coaxial cylindrical hole (C)；Piston (2), sealing ring (3) are equipped in cylindrical hole (C), piston (2) and the gap cylindrical hole (C) are matched
It closes；Sealing ring (3) is set between cylindrical hole (C) and piston (2).
3. a kind of hydraulic motor floating port plate structure as claimed in claim 2, which is characterized in that the valve plate
(1) V-type point slot (A), four kidney slots (B) penetrated through there are four setting on, four V-type point slots (A) and four kidney slots (B) are respectively
Median plane two-by-two about valve plate (1) is symmetrical；Throttle orifice (D) and two cylinders there are two being set on the median plane of valve plate (1)
Hole (C).
4. a kind of hydraulic motor floating port plate structure as claimed in claim 2, which is characterized in that the spool (7)
It is equipped with spool inner hole (F)；Cylinder body (8) is equipped with cylinder body plunger hole (G)；Motor cover (4) is equipped with motor cover internal galleries
(E), motor cover internal galleries (E) include the oil inlet oil duct of motor and the oil outlet oil duct of motor；Motor cover internal galleries
(E), spool inner hole (F), kidney slot (B), cylinder body plunger hole (G) form access.
5. a kind of hydraulic motor floating port plate structure as described in claim 1 or 4, which is characterized in that the motor
There are four setting on lid (4) cylindrical hole (C), four cylindrical holes (C) are symmetrical, the oil inlet of two of them cylindrical hole (C) and motor
Mouth oil duct communicates, and the oil outlet oil duct of other two cylindrical hole (C) and motor communicates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820958845.5U CN208518812U (en) | 2018-06-21 | 2018-06-21 | A kind of hydraulic motor floating port plate structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820958845.5U CN208518812U (en) | 2018-06-21 | 2018-06-21 | A kind of hydraulic motor floating port plate structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208518812U true CN208518812U (en) | 2019-02-19 |
Family
ID=65325456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820958845.5U Expired - Fee Related CN208518812U (en) | 2018-06-21 | 2018-06-21 | A kind of hydraulic motor floating port plate structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208518812U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612621A (en) * | 2018-06-21 | 2018-10-02 | 龙工（上海）精工液压有限公司 | Hydraulic motor floating port plate structure |
| CN110567705A (en) * | 2019-07-26 | 2019-12-13 | 中国北方车辆研究所 | Distribution friction pair performance simulation test device based on floating disc |
-
2018
- 2018-06-21 CN CN201820958845.5U patent/CN208518812U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612621A (en) * | 2018-06-21 | 2018-10-02 | 龙工（上海）精工液压有限公司 | Hydraulic motor floating port plate structure |
| CN110567705A (en) * | 2019-07-26 | 2019-12-13 | 中国北方车辆研究所 | Distribution friction pair performance simulation test device based on floating disc |
| CN110567705B (en) * | 2019-07-26 | 2021-03-23 | 中国北方车辆研究所 | Distribution friction pair performance simulation test device based on floating disc |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |