CN203856645U - Large-displacement cycloid hydraulic motor with embedded column type rotor and stator pair - Google Patents

Large-displacement cycloid hydraulic motor with embedded column type rotor and stator pair Download PDF

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Publication number
CN203856645U
CN203856645U CN201320822743.8U CN201320822743U CN203856645U CN 203856645 U CN203856645 U CN 203856645U CN 201320822743 U CN201320822743 U CN 201320822743U CN 203856645 U CN203856645 U CN 203856645U
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China
Prior art keywords
stator
rotor
hydraulic motor
motor
cycloid hydraulic
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CN201320822743.8U
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王志生
张智敏
翁爱光
盛伟
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ZHENJIANG DALI HYDRAULIC MOTOR CO Ltd
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ZHENJIANG DALI HYDRAULIC MOTOR CO Ltd
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Abstract

The utility model discloses a large-displacement cycloid hydraulic motor with an embedded column type rotor and stator pair. A body shell with a liquid inlet and a reflow hole is arranged at one end of the motor, and the cycloid needle wheel pair mainly comprising a stator, needle teeth and a rotor is arranged at the other end of the motor; an output shaft of which the outer end extends out is arranged at one end of the body shell; a linkage shaft of which two ends are meshed with the inner end of the output shaft and an inner spline of the rotor is arranged in the middle of the body shell; the rotor and stator pair can move by virtue of a flow distribution system in a rear cover. The large-displacement cycloid hydraulic motor is characterized in that the stator of the embedded column type rotor and stator pair is formed by splicing two split bodies which are sealed by an O-shaped sealing ring; the rotor is integrated; the needle teeth in stator needle tooth holes of the two split bodies are integrated; the length of each needle tooth is equal to that of the rotor. By virtue of the large-displacement cycloid hydraulic motor with the embedded column type rotor and stator pair, the displacement of the motor is increased; the manufacturability of the integral type rotor and stator pair is good; by verifying, all performance of the large-displacement motor is stable, and the requirements on a large-displacement shaft valve flow-distribution cycloid hydraulic motor are met.

Description

Large discharge capacity edge pillar turns the secondary cycloid hydraulic motor of stator
Technical field
The utility model relates to a kind ofly realizes hydraulic energy to the cycloid hydraulic motor of mechanical energy conversion by cycloidal pin wheels engagement pair, and especially a kind of large discharge capacity edge pillar turns the secondary cycloid hydraulic motor of stator, belongs to hydraulic transmission technology field.
Background technique
Cycloid hydraulic motor is a kind of low-speed big torque motor, has the advantages such as volume is little, specific power density is large, efficiency is high, speed range is wide, thereby is widely applied, along with industrial and agricultural development application is more extensive.
The basic structure of cycloid hydraulic motor is on body shell or bonnet, to be shaped with liquid entering hole and refluxing opening, cycloidal pinion engaged pair and flow-distribution mechanism are equipped with in one end, flow-distribution mechanism can be placed on before or after cycloidal pinion engaged pair, in front (body shell one side), be generally axle valve flow, in rear (bonnet one side), be plane flow, the other end is equipped with output shaft.The rotor of cycloidal pinion engaged pair meshes by the external gear of internal spline and couple axle one end, and the other end of couple axle is connected with output shaft transmission.During work, flow-distribution mechanism makes liquid entering hole be communicated with the expansion engagement chamber of cycloidal pin wheel set, and the contraction chamber of cycloidal pin wheel set is communicated with refluxing opening.As a result, pressured fluid, from liquid entering hole enters body shell or bonnet, enters the expansion engagement chamber that cycloidal pinion engaged pair forms, and its volume is constantly expanded, and in the contraction engagement chamber that cycloidal pinion engaged pair forms simultaneously, liquid refluxes from refluxing opening; In this process, the rotor of cycloidal pinion engaged pair is expanded engagement chamber and drives rotation with the pressure difference of shrinking engagement chamber, and this rotation is delivered to output shaft by couple axle exports, thereby realizes hydraulic energy to the conversion of mechanical energy.Meanwhile, flow-distribution mechanism is also by couple axle driven rotary, and the continuous switching connected state going round and beginning again, is continued transfer process.Like this, the output torque that motor just can be continuous.
According to the applicant understood, existing edge pillar turns stator pair and is mainly used in flat porting cycloid hydraulic pressure motor, the following length of gear pin diameter 13 that current edge pillar turns stator pair is 72mm, the highest nominal discharge capacity of motor is 400, if increase discharge capacity, need to increase the length that turns stator pair, the Boring of pin perforation is very difficult, or gear pin diameter 16 left and right length are 90mm, the highest nominal discharge capacity of motor is 800, if increase discharge capacity, need to increase the length that turns stator pair, the Boring of pin perforation is very difficult, length is oversize in addition does not guarantee in order to the planeness of end flat yet, thereby may have influence on the combination property of motor, and the reliability of product.
Summary of the invention
The purpose of this utility model is: the problem existing for above prior art, by existing edge pillar being turned to the improvement of stator pair, good large discharge capacity edge pillar turns stator auxiliary structure to propose a kind of compact structure, anufacturability, meets the demand of large discharge capacity axle valve distributing cycloid hydraulic motor.
In order to achieve the above object, claimant turns the structural analysis of stator pair by edge pillar, find out length structure and method that the existing edge pillar of expansion turns stator pair, keeping original edge pillar to turn stator auxiliary motor radially under the constant prerequisite of boundary dimension, following the technical solution of the utility model is proposed: a kind of large discharge capacity edge pillar turns the secondary cycloid hydraulic motor of stator, one end is the body shell that is shaped with liquid entering hole and refluxing opening, the cycloidal pin wheel set of the other end for mainly consisting of stator, pin tooth and rotor; The output shaft that outer end extends out is equipped with in described body shell one end, middle part be equipped with two ends respectively with the couple axle of described output shaft the inner and rotor internal spline engagement, described in turn that stator is secondary realizes motion by the flow system in bonnet; ; Its improvements are: the stator that described edge pillar turns stator pair is spliced by two splits, between two split stators, by O RunddichtringO, seal, described rotor is an integral body, pin tooth in two described split stator pin perforations is as a whole, and the described length of pin tooth is suitable with the length of rotor.
Described rotor internal spline is discontinuous, and couple axle and rotor are engaged in the internal spline at middle part.
Pin tooth in the pin perforation of described front stator only matches with front stator, pin tooth in the pin perforation of described rear stator only matches with rear stator, and each two of forming of described forward and backward stator and forward and backward pin tooth match and form an edge pillar with rotor assembling to turn stator secondary whole.
The described two split stators with rotor engagement are front stator and rear stator, and the length of front and back stator can adopt the same size, also can adopt different size.
The process step that large discharge capacity edge pillar of the present utility model turns stator pair and motor is as follows:
The first step, being machined through following operation by bar blank rotor: blanking, rough turn, half finish turning, broaching, coarse milling, half finish-milling is cut, heat treatment, finished plane, form grinding;
Second step, front stator and rear stator are machined by following operation respectively: blanking, rough turn, half finish turning, half finished plane, brill, expansion, boring, hinge, polishing etc., removal, deburring, finished plane,
By mounting O-shaped rings on the seal groove of front stator or rear stator,
Front stator, rear stator and pin tooth and rotor are assembled into one, and to turn stator secondary whole;
In the 3rd step, when assembling, turn stator pair using edge pillar and be arranged on motor corresponding site as parts, and employing is fixed each part of motor lower than the screw-down torque of 1/2nd bolt;
In the 4th step, when test,, be fixed on motor on test bench, and motor carries out the running of unloaded or little load, on-stream bolt tightened in order, carries out afterwards testing property, judges whether motor reaches standard-required.
Compare with the gerotor motor of prior art, after above-mentioned improvement structure of the present utility model, motor can process large discharge capacity, as discharge capacity 475 or 800,1000 etc., and technology capability is good, and the theoretical position precision of design easily guarantees, whole assembling is good, dimensional accuracy and the positional accuracy of each part are easy to process control, and the reliability of integral product is high, do not need to adopt special tool or special inner chamber grinding machine, the function application area that can expand low cost motor, is conducive to client cost-saving.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is an embodiment's of the utility model structural representation.
In figure, output shaft 1, key 2, dust ring 3, shaft seal 4, body shell 5, bearing 6, spacer 7, output shaft 8, couple axle 9, connecting plate 10, locking nut 11, stator 12, pin tooth 13, rotor 14, flow dunnage 15, O type circle 16, hydraulic fluid port 17, bonnet 18, large butterfly circle 19, little butterfly circle 20, spring 21, pin 22, bolt 23, flow platen 24, thrust plate 25, flow couple axle 26, ejector pin 27, shunting butterfly circle 28, O type circle 29.
Fig. 2 inlays pillar to turn the secondary schematic diagram of stator in Fig. 1 embodiment.
Front stator 1 ' in figure, front pin tooth 2 ', rotor 3 ', rear stator 4 ', rear pin tooth 5 ', O type circle 6 '.
Fig. 3 inlays pillar to turn the secondary mesh schematic representation of stator in Fig. 1 embodiment.
In figure, front stator 1 ", pin tooth 2 ", rotor 3 " and, rear stator 4 ", O type circle 5 ".
embodiment one
The large discharge capacity edge pillar of the present embodiment turns the secondary cycloid hydraulic motor of stator, radial dimension is compact, the following length of gear pin diameter 13mm that edge pillar turns stator pair is more than 72mm, motor name discharge capacity is 475, 495, 500, the following length in gear pin diameter 16.5mm left and right that edge pillar turns stator pair is more than 85mm, motor name discharge capacity is 800, 985, 1000, Deng, its similar structure as shown in Figure 1, mainly comprise output shaft 1, before body shell 5(or body shell, there is protecgulum), couple axle 9, connecting plate 10, turn stator pair (12, 13, 14), flow dunnage 15, bonnet 18 etc., the stator that described edge pillar turns stator pair is spliced by two splits, between two split stators, by O RunddichtringO, seal, described rotor is an integral body, described pin tooth is split, or described pin tooth is whole.Edge pillar turns the secondary assembly structure of stator as shown in Figure 2, and the front stator 1 ' in figure seals by O type circle 6 ' with rear stator 4 ', and pin tooth is split; Shown in Fig. 3, inlay pillar and turn the secondary engagement figure of stator, in figure, pin tooth is overall structure, in edge pillar, turns in the secondary assembling process of stator and can adopt the mode of heating stator or cooled rotor to carry out.
On described bonnet 18, be shaped with oil inlet and outlet hole 17, oil inlet and outlet hole communicates with the rear and front end of flow platen 24 respectively, front end is by large butterfly circle 19 sealings, rear end is by little butterfly circle 20 sealings, between size butterfly circle, that at least two pins 22 are installed is radially spacing with 21 pairs of flow platens 24 of spring in position, the internal drainage liquid of motor by and big or small butterfly circle between internal drainage liquid passage and outer drain tap link up.
The tapered roller bearing 6 of two face-to-faces has been installed by spacer 7 on described output shaft 1, and tapered roller bearing 6 carries out pretension by locking nut 11.
The internal spline of described rotor 14 is discontinuous splines, and the internal spline of described rotor 14 is comprised of two sections of internal splines, between two sections of internal splines, has one section without the annular groove of internal spline.Described annular groove arranges in order to adopt economic equipment (broaching machine) and cutter (broaching tool) to process, to reduce length and the cost of broaching tool.
The outgoing position of described rotor 14 moments of torsion is the external splines of couple axle 9 and the rotor of cycloidal pin wheel set 14 internal spline engagement places, is positioned at the middle part of rotor, and ejector pin 27 is positioned at the end of rotor 14.
The length of described front and back stator can be identical, also can differently combine, and is mainly to see whether can use small displacement stator, and in order to reduce processing variety and to be convenient to stock control, when selecting, front and back stator is selected to approach in length as far as possible.
Edge pillar turns the man-hour that adds of stator pair and motor, and rotor 14 and stator assembly are processed respectively, in difference precision machining process, by its suitable quality of fit requirement, processes its dimensional accuracy matching and positional accuracy.Process step is as follows:
1, being machined through following operation by bar blank rotor 14: blanking, rough turn, half finish turning, broaching, coarse milling, half finish-milling are cut, heat treatment, finished plane, form grinding;
2, front stator and rear stator are machined by following operation respectively: blanking, rough turn, half finish turning, half finished plane, brill, expansion, boring, hinge, polishing etc., removal, deburring, finished plane,
By mounting O-shaped rings on the seal groove of front stator or rear stator,
Front stator, rear stator and pin tooth and rotor are assembled into one, and to turn stator secondary whole;
3, when assembling turns stator pair using edge pillar and is arranged on motor corresponding site as parts, and employing is fixed each part of motor lower than the screw-down torque of 1/2nd bolt 23;
4, when test, is fixed on motor on test bench, and motor carries out the running of unloaded or little load, on-stream bolt is tightened in order, carries out afterwards testing property, judges whether motor reaches standard-required.
Be understood that, experience above manufacturing process, large discharge capacity edge pillar turns the good manufacturability of stator pair, and quality conformance is good, reliability is high, can guarantee that the properties that large discharge capacity edge pillar turns the secondary cycloid hydraulic motor of stator reaches design standard requirement simultaneously.
Facts have proved, the large discharge capacity edge pillar of the present embodiment turns the secondary cycloid hydraulic motor of stator and has lot of superiority, parts machining process moderate accuracy, the good manufacturability of assembling, reliability is high, and cost is low, and compact structure, expanded the discharge capacity scope of homologous series products, thereby improved the cost performance of product and expanded applying working condition.
In addition to the implementation, the utility model can also have other mode of executions.For example, be applied to commutator etc.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. large discharge capacity edge pillar turns the secondary cycloid hydraulic motor of stator, and one end is the body shell that is shaped with liquid entering hole and refluxing opening, the cycloidal pin wheel set of the other end for mainly consisting of stator, pin tooth and rotor; The output shaft that outer end extends out is equipped with in described body shell one end, middle part be equipped with two ends respectively with the couple axle of described output shaft the inner and rotor internal spline engagement, described in turn that stator is secondary realizes motion by the flow system in bonnet; It is characterized in that: the stator that described edge pillar turns stator pair is spliced by two splits, between two split stators, by O RunddichtringO, seal, described rotor is an integral body, pin tooth in two described split stator pin perforations is as a whole, and the described length of pin tooth is suitable with the length of rotor.
2. large discharge capacity edge pillar according to claim 1 turns the secondary cycloid hydraulic motor of stator, it is characterized in that: described rotor internal spline is discontinuous, and couple axle and rotor are engaged in the internal spline at middle part.
3. large discharge capacity edge pillar according to claim 2 turns the secondary cycloid hydraulic motor of stator, it is characterized in that: the described two split stators with rotor engagement are front stator and rear stator, the length of described front and back stator adopts the same size, or the length of described front and back stator adopts different size.
4. large discharge capacity edge pillar according to claim 3 turns the secondary cycloid hydraulic motor of stator, it is characterized in that: the pin tooth in the pin perforation of described front stator only matches with front stator, pin tooth in the pin perforation of described rear stator only matches with rear stator, and each two of forming of described forward and backward stator and forward and backward pin tooth match and form an edge pillar with rotor assembling to turn stator secondary whole.
5. according to the large discharge capacity edge pillar described in claim 3 or 4, turn the secondary cycloid hydraulic motor of stator, it is characterized in that: on described bonnet, be shaped with oil inlet and outlet hole, oil inlet and outlet hole communicates with the rear and front end of flow platen respectively, front end is sealed by large butterfly circle, rear end is sealed by little butterfly circle, between size butterfly circle, position is provided with at least two pins and spring is radially spacing to flow platen, the internal drainage liquid of motor by and big or small butterfly circle between internal drainage liquid passage and outer drain tap link up.
6. large discharge capacity edge pillar according to claim 5 turns the secondary cycloid hydraulic motor of stator, it is characterized in that: the tapered roller bearing of two face-to-faces has been installed by spacer on described output shaft, and tapered roller bearing carries out pretension by locking nut.
CN201320822743.8U 2013-12-14 2013-12-14 Large-displacement cycloid hydraulic motor with embedded column type rotor and stator pair Active CN203856645U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103629043A (en) * 2013-12-14 2014-03-12 镇江大力液压马达股份有限公司 Large-displacement embedded column type cycloid hydraulic motor with rotor and stator pair
CN106762386A (en) * 2017-01-17 2017-05-31 镇江大力液压马达股份有限公司 A kind of small-sized installation dimension high pressure cycloid hydraulic motor
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103629043A (en) * 2013-12-14 2014-03-12 镇江大力液压马达股份有限公司 Large-displacement embedded column type cycloid hydraulic motor with rotor and stator pair
CN106762386A (en) * 2017-01-17 2017-05-31 镇江大力液压马达股份有限公司 A kind of small-sized installation dimension high pressure cycloid hydraulic motor
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

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