CN201137549Y - Valve spindle cycloid hydraulic motor - Google Patents
Valve spindle cycloid hydraulic motor Download PDFInfo
- Publication number
- CN201137549Y CN201137549Y CNU2007200452235U CN200720045223U CN201137549Y CN 201137549 Y CN201137549 Y CN 201137549Y CN U2007200452235 U CNU2007200452235 U CN U2007200452235U CN 200720045223 U CN200720045223 U CN 200720045223U CN 201137549 Y CN201137549 Y CN 201137549Y
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- Prior art keywords
- valve
- output shaft
- hydraulic motor
- axle
- body shell
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- 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.)
- Expired - Fee Related
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- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000010992 reflux Methods 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000000806 elastomer Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 12
- 230000007246 mechanism Effects 0.000 description 7
- 208000002925 dental caries Diseases 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009183 running Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Hydraulic Motors (AREA)
Abstract
The utility model relates to an axle valve distribution cycloid hydraulic motor, belonging to the hydraulic transmission field, wherein one end of the motor is provided with a shell with a liquid inlet and a liquid outlet, and the another end is a cycloid needle wheel couple composed of a stator and a rotor, one end of the shell is provided with an output shaft whose outer end is extended, the middle is provided with a link shaft whose two ends are respectively meshed with the inner end of the output shaft and the inner spline of the rotor, the distribution system is integrated on the axle valve which is rotationally provided in the inner hole of the shell, one end of the axle valve is connected with the output shaft via a connecting pin, the connecting pin is provided axially to joint the axle valve and the output shaft in a meshing type. Therefore, the utility model can improve the radial force bearing ability of the hydraulic motor, having simple production and assembly, saving unloading device and reducing cost.
Description
Technical field
The utility model relates to a kind ofly realizes that by cycloid pin gear group engagement pair hydraulic pressure can in particular for by an axle valve distributing cycloid hydraulic motor, belong to hydraulic transmission technology field to the cycloid hydraulic motor of mechanical energy conversion.
Background technique
Cycloid hydraulic motor is a fluid pressure drive device commonly used, also is to realize that hydraulic pressure can convert the hydraulic pressure execution device commonly used of function to.Cycloid hydraulic motor has advantages such as volume is little, specific power density is big, efficient is high, speed range is wide, thereby has obtained extensive use.
The basic structure of this type of device is to be shaped on liquid entering hole and refluxing opening on body shell or the bonnet, one end is equipped with cycloidal pinion engaged pair and flow-distribution mechanism, flow-distribution mechanism can be placed on before or after the cycloidal pinion engaged pair, be axle valve flow generally in preceding (body shell one side), in back (bonnet one side) is the plane flow, and the other end is equipped with output shaft.The rotor of cycloidal pinion engaged pair is by the external gear engagement of internal spline and couple axle one end, and the other end of couple axle is connected with the output shaft transmission.During work, flow-distribution mechanism makes liquid entering hole be communicated with the expansion engagement chamber of cycloidal-pin wheel pair, and the contraction chamber of cycloidal-pin wheel pair is communicated with refluxing opening.As a result, after pressured fluid enters body shell or bonnet from liquid entering hole, enter the expansion engagement chamber that cycloidal pinion engaged pair forms, its volume is constantly enlarged, liquid then refluxes from refluxing opening in the contraction engagement chamber of cycloidal pinion engaged pair formation simultaneously; In this process, the rotor of cycloidal pinion engaged pair is expanded the engagement chamber and orders about rotation with the pressure difference of shrinking the engagement chamber, and this rotation is delivered to output shaft output by couple axle, thereby realizes that hydraulic pressure can be to the conversion of mechanical energy.Meanwhile, also by the couple axle driven rotary, the continuous switching connected state that goes round and begins again is continued transfer process to flow-distribution mechanism (axle valve).Like this, the output torque that motor just can be continuous.We can say that cycloidal pinion engaged pair and flow-distribution mechanism are the cores of cycloid hydraulic motor.
Retrieval is found, the cycloid hydraulic motor of existing axle valve flow develops towards the direction of compact structure, the motor configuration of pin tooth occurred not having, and the external diameter of its stator has only 85mm (for example OMP of Danfoss company), yet its bearing radial force is limited, has dwindled Applicable scope.Even set up needle bearing, can make all improvement of radial force ability to bear, but because its structural limitations, improve limited, and can cause the raising of the accuracy of manufacturing of Motor Components, installation precision requires higher, even may cause such as other problems such as shortenings in working life.
In addition, the patent No. is the oil hydraulic motor that the Chinese patent of CN02217895.3 discloses another kind of typical structure, and its overall structure is bigger, have the pin tooth, installation technology is bad, the requirement on machining accuracy height, it is also high that assembly precision requires, and it is higher relatively that the motor in the use is killed the probability of inefficacy.
The model utility content
The purpose of this utility model is: the structural analysis of the cycloid hydraulic motor by discharge capacities bigger than normal such as centering (usually discharge capacity 100-400 milliliter/commentaries on classics), especially have a valve distributing construction research of the cycloid tooth wheel set oil hydraulic motor integral structure layout of pin tooth is arranged, find out the little weak link of its bearing radial force, keeping under the constant prerequisite of overall dimensions, propose a kind of compact structure, can bear the axle valve distributing cycloid hydraulic motor of big radial force, thereby make the manufacturability of processing, assembling of oil hydraulic motor all good, improve its cost performance.
In order to achieve the above object, the technical solution of the utility model is: a kind of valve distributing cycloid hydraulic motor, an end are the body shell that is shaped on liquid entering hole and refluxing opening, the cycloidal-pin wheel pair of the other end for mainly being made of stator and rotor; Described body shell one end is equipped with the output shaft that the outer end extends out, the middle part be equipped with two ends respectively with the couple axle of described output shaft the inner and rotor internal spline engagement; The described flow system intergration is on the axle valve, and described axle valve is rotatable to be installed in the endoporus of body shell; Its improvements are: an end of described axle valve links through connecting pin and output shaft, and described connecting pin is axial arranged, by meshing relation described axle valve and output shaft angle is connected.
Like this, the moment of torsion that rotor forms is delivered to output shaft by couple axle, the high low pressure hydraulic oil liquid is by the flow of axle valve, oil through road through the body shell, and the cavity volume between rotor and the stator transmits, and makes a valve and the joining structure of output shaft by connecting pin, not only helps compact structure, and can bear big radial force, and process, assemble all very convenient.
The utility model further improves, and the radial-thrust bearing that described output shaft is installed by a pair of reverse formula back-to-back is supported in the output terminal of described body shell.Reverse back-to-back pair of bearings can be born big radial force during this installation, also can bear certain axial force simultaneously.
Compare with gerotor motor in the past, above-mentioned improvement structure of the present utility model can enlarge the application area of motor, reduces the extra feel trim actuator of client.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is an embodiment's of the utility model a structural representation.
Output shaft 1 among the figure, dust ring 2, protecgulum 3, body shell 4, spacer ring 5, bearing 6, connecting pin 7, hydraulic fluid port 8, elastomer 9, valve ball 10, valve body 11, seal ring 12, stator 13, rotor 14, pin tooth 15, pad 16, plug screw 17, bolt 18, pad 19, bonnet 20, every dish 21, O type circle 22, axle valve 23, couple axle 24, cannelure 25, circular groove 26, cavity 27, back-up ring 28, protecgulum seal ring 29, screw 30, axle envelope 31.
Fig. 2 be among Fig. 1 embodiment cycloidal engagement pair rotor axis of a curve valve and output shaft be connected the structure for amplifying schematic representation.
Fig. 3 is the structure for amplifying schematic representation of one-way valve among Fig. 1 embodiment.
Embodiment
The axle valve distributing cycloid hydraulic motor of present embodiment can bear big radial force, basic structure as shown in Figure 1, mainly comprise output shaft 1, protecgulum 3, body shell 4, couple axle 24, every dish 21, change stator pin tooth pair 14,13 and 15, bonnet 20 etc.Engagement cycloidal pinion engaged pair in its transfer, stator pin tooth are formed, stator 13 be fixed on jointly on the body shell 4 by bolt 18 every dish 21 and bonnet 20, thereby form seven only cavitys of communicating one by one of the flow duct in the consubstantiality shell.Processed cannelure 25 and two circular grooves 26 of 12 uniform dislocation on the pintle valve 23, wherein two circular grooves match with the flow duct of body shell 4, communicate respectively with into and out of hydraulic fluid port.12 cannelures on the axle valve 23 link to each other with one of two circular grooves respectively.Processed on the body shell 4 duct with high low pressure fluid and the flow duct, communicate respectively with into and out of hydraulic fluid port thereby 12 cannelures are alternate, with the axle valve 23 common flow functions that realize keeping the oil hydraulic motor continuous runnings.Thus, pintle valve 23 has been formed flow-distribution mechanism with body shell 4.
Output shaft 1 by a pair of oppositely install back-to-back radial-thrust bearing---tapered roller bearing 6 is supported in the output terminal of body shell 4, therefore can bear big radial force and certain axial force.
Hydraulic oil liquid enters into the circular groove of a valve 23 by the filler opening of body shell 4, enters the flow duct of body shell 4 by cannelure, changes the stator pairs by arriving every dish 21.The oil extraction direction is just in time opposite.
The rotatablely moving of rotor 14 comprises rotation (is the direction rotation that the high pressure tooth cavity enlarges around its axle center) and revolution (around the stator axle center be that radius rotate with the throw of eccentric), the rotation of rotor 14 is just in time opposite with the revolution direction, rotation passes to pintle 23 by couple axle 24, rotor rotation 1 circle, revolution 6 circles, the pressure oil that produces 42 volumes promotes rotor rotation.Thereby this Torque Performance of Hydraulic Motor is big, and rotation has low-speed stability.
Along the direction of rotor revolution, the front side tooth cavity volume of rotor and stator line of centers diminishes, and forms oil-discharging cavity; It is big that its rear side volume becomes, and forms oil suction chamber.When line of centers passed through two tooth roots of rotor, oil-feed finished, and maximum tooth cavity occurs.When line of centers passed through two tooth tops of rotor, oil extraction finished, and minimum tooth cavity occurs.Guarantee that rotor rotates continuously, must have the flow-distribution mechanism of identical rule to combine, its line of centers front side tooth cavity is communicated with oil drain passage with it; And rear side communicates with oil input channel.
The connection of present embodiment axle valve 23 is amplified schematic construction as shown in Figure 2, be shaped near the shaft shoulder of output shaft 1 installation radial bearing and extend axially opening slot, one end of connecting pin 7 is fixed in the plug-in opening of a valve 23, the other end is stuck in extending axially in the opening slot of corresponding position, form non-rigid connection, so both guaranteed the conformity of motor flow relation and continued reliability, and be convenient to again make and assembling.
Be shaped on the drainback passage that is communicated with internal cavity 26 on the body shell 4 of present embodiment, in this passage one-way valve be housed, it amplifies schematic construction as shown in Figure 3, is made up of elastomer 9, valve ball 10, valve body 11, seal ring 12.11 one-tenth steps of valve body are poroid, are installed in the body shell 4 by seal ring 12.In the big end of step hole valve ball 10 is housed, the outside of this valve ball is resisted against on the elastomer 9.Because interior engagement cycloidal pinion engaged pair is under the driving of high low pressure hydraulic oil, when producing moment of torsion, need certain clearance for guaranteeing to rotate flexibly between its each revolute pair, have a spot of oil liquid leakage unavoidably and enter cavity 26, and then get back in system's fuel tank by one-way valve.
Facts have proved, the axle valve distributing cycloid hydraulic motor parts machining process moderate accuracy of present embodiment, the good manufacturability of assembling, reliability height, and compact structure can bear big radial force, thereby improve cost performance of product.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (6)
1. axle valve distributing cycloid hydraulic motor, the one end is the body shell that is shaped on liquid entering hole and refluxing opening, the cycloidal-pin wheel pair of the other end for mainly being made of stator and rotor; Described body shell one end is equipped with the output shaft that the outer end extends out, the middle part be equipped with two ends respectively with the couple axle of described output shaft the inner and rotor internal spline engagement; The described flow system intergration is on the axle valve, and described axle valve is rotatable to be installed in the endoporus of body shell; It is characterized in that: an end of described axle valve links through connecting pin and output shaft, and described connecting pin is axial arranged, by meshing relation described axle valve and output shaft angle is connected.
2. according to described valve distributing cycloid hydraulic motor of claim 1, it is characterized in that: the radial-thrust bearing that described output shaft is installed by a pair of reverse formula back-to-back is supported in the output terminal of described body shell.
3. according to claim 1 or 2 described valve distributing cycloid hydraulic motors, it is characterized in that: be shaped near the shaft shoulder of described output shaft installation radial bearing and extend axially opening slot, one end of described connecting pin is fixed in the plug-in opening of a valve, the other end is stuck in extending axially in the opening slot of corresponding position, forms the non-rigid connection of meshing relation.
4. according to described valve distributing cycloid hydraulic motor of claim 3, it is characterized in that: described radial-thrust bearing is a tapered roller bearing.
5. according to described valve distributing cycloid hydraulic motor of claim 4, it is characterized in that: be shaped on the drainback passage that is communicated with internal cavity on the described body shell, in the described drainback passage one-way valve be housed.
6. according to described valve distributing cycloid hydraulic motor of claim 5, it is characterized in that: described one-way valve is made up of elastomer, valve ball, valve body, and described valve body becomes step poroid, is installed in the body shell, in the big end of described step hole valve ball is housed, the outside of described valve ball is resisted against on the elastomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200452235U CN201137549Y (en) | 2007-08-23 | 2007-08-23 | Valve spindle cycloid hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200452235U CN201137549Y (en) | 2007-08-23 | 2007-08-23 | Valve spindle cycloid hydraulic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201137549Y true CN201137549Y (en) | 2008-10-22 |
Family
ID=40038236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200452235U Expired - Fee Related CN201137549Y (en) | 2007-08-23 | 2007-08-23 | Valve spindle cycloid hydraulic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201137549Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828895A (en) * | 2012-09-07 | 2012-12-19 | 镇江大力液压马达有限责任公司 | Radial supporting shaft-valve flow-distributing hydraulic orbit motor |
| CN102900597A (en) * | 2012-10-28 | 2013-01-30 | 镇江大力液压马达有限责任公司 | Compact axial flow distribution cycloid hydraulic motor with short shell |
| CN103671465A (en) * | 2014-01-17 | 2014-03-26 | 镇江大力液压马达股份有限公司 | Cycloid hydraulic motor output shaft and machining method thereof |
| CN106870274A (en) * | 2017-04-15 | 2017-06-20 | 镇江大力液压马达股份有限公司 | A kind of big radial load supporting plane distributing cycloid hydraulic motor |
| CN111550377A (en) * | 2020-06-01 | 2020-08-18 | 杭州绿聚科技有限公司 | Novel axial plunger pump valve flow distribution mechanism and flow distribution method |
-
2007
- 2007-08-23 CN CNU2007200452235U patent/CN201137549Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828895A (en) * | 2012-09-07 | 2012-12-19 | 镇江大力液压马达有限责任公司 | Radial supporting shaft-valve flow-distributing hydraulic orbit motor |
| CN102900597A (en) * | 2012-10-28 | 2013-01-30 | 镇江大力液压马达有限责任公司 | Compact axial flow distribution cycloid hydraulic motor with short shell |
| CN103671465A (en) * | 2014-01-17 | 2014-03-26 | 镇江大力液压马达股份有限公司 | Cycloid hydraulic motor output shaft and machining method thereof |
| CN103671465B (en) * | 2014-01-17 | 2015-10-21 | 镇江大力液压马达股份有限公司 | A kind of cycloid hydraulic motor output shaft and processing method thereof |
| CN106870274A (en) * | 2017-04-15 | 2017-06-20 | 镇江大力液压马达股份有限公司 | A kind of big radial load supporting plane distributing cycloid hydraulic motor |
| CN111550377A (en) * | 2020-06-01 | 2020-08-18 | 杭州绿聚科技有限公司 | Novel axial plunger pump valve flow distribution mechanism and flow distribution method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhenjiang Dadi Hydraulic Liability Co., Ltd. Assignor: Zhenjiang Dali Hydraulic Component Co., Ltd. Contract fulfillment period: 2008.10.22 to 2017.8.23 Contract record no.: 2009320000605 Denomination of utility model: A kind of axle valve flow distribution cycloid hydraulic motor Granted publication date: 20081022 License type: exclusive license Record date: 20090417 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.22 TO 2017.8.23; CHANGE OF CONTRACT Name of requester: ZHENJIANG DADI HYDRAULIC PRESSURE CO.,LTD. Effective date: 20090417 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20150823 |
|
| EXPY | Termination of patent right or utility model |