CN204253272U - Oil hydraulic motor - Google Patents
Oil hydraulic motor Download PDFInfo
- Publication number
- CN204253272U CN204253272U CN201420702927.5U CN201420702927U CN204253272U CN 204253272 U CN204253272 U CN 204253272U CN 201420702927 U CN201420702927 U CN 201420702927U CN 204253272 U CN204253272 U CN 204253272U
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- plunger
- sleeve
- hydraulic motor
- housing
- oil hydraulic
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Abstract
The utility model discloses a kind of oil hydraulic motor, comprise housing, at housing inside connecting rod-plunger assembly, at housing side face upper prop plug sleeve, it is characterized in that the cylinder sleeve that plunger bushing comprises cylinder cap and is sealed and matched with this cylinder cap, cylinder cap is arranged on the end of this housing side face, and cylinder sleeve to be arranged in housing and parcel connecting rod-plunger assembly.Relative to existing integrated pole plug sleeve, plunger bushing is divided into cylinder cap and cylinder sleeve two parts by the utility model, and cylinder sleeve can adopt the good material of stress performance to make, and cylinder cap adopts general material, thus the strong manufacture cost reducing plunger bushing; This split type plunger bushing simultaneously, makes cylinder sleeve under the alternating stress effect being subject to plunger, to be not easy to this force transmission, to cylinder cap, cut off the transmission of alternating stress, improves the stability of oil hydraulic motor operating mode.And the shape also making cylinder sleeve is better simple, be convenient to processing, be conducive to improving machining accuracy, thus can strengthen cylinder sleeve and plunger this to the wear-resisting property between friction pair.
Description
Technical field
The utility model relates to a kind of oil hydraulic motor, particularly a kind of radial piston hydraulic motor.
Background technique
At present, oil hydraulic motor has been widely used in various engineering field, and wherein, radial piston hydraulic motor is more common a kind of oil hydraulic motor.Radial piston hydraulic motor generally comprises housing 1 ', the excentric sleeve 2 ' being arranged on the transmission shaft 3 ' in this housing 1 ' and being arranged on this transmission shaft 3 ', as shown in Figure 1 to Figure 3, also be provided with for oil distribution mechanism 6 ' in this housing 1 ' end, on the radial circumference direction of this excentric sleeve 2 ', odd number connecting rod-plunger assembly 4 ' is provided with radially in housing 1 ', this connecting rod-plunger assembly 4 ' comprises plunger 41 ' and connecting rod 42 ', housing 1 ' side face is provided with the plunger bushing 5 ' that quantity and connecting rod-plunger assembly 4 ' match, plunger bushing 5 ' wraps up plunger 41 ', in addition, at plunger bushing 5 ', offering being used for of matching with the quantity of connecting rod-plunger assembly 4 ' in housing 1 ' supplies oil distribution mechanism to be multiple oil circuits that each connecting rod-plunger assembly 4 ' joins oil.Radial piston hydraulic motor working principle is, when pressure oil is through for oil distribution mechanism 6 ', connecting rod-plunger assembly 4 ', acts on excentric sleeve 2 ' and excentric sleeve 2 ' is rotated, by transmission shaft 3 ' Driving Torque and rotating speed.
But, existing plunger bushing 5 ' uses as cylinder cap on the one hand, for drainage pressure oil and the end sealing connecting rod-plunger assembly, on the other hand, existing plunger bushing 5 ' also extends in housing 1 ', thus form the cylinder sleeve of a parcel plunger, this cylinder sleeve and plunger form friction pair, in the working procedure of oil hydraulic motor, create a pair interaction force, connecting rod-plunger assembly 4 ', to its active force, is had higher requirement to the plunger bushing 5 ' material of this part.But, because existing plunger bushing 5 ' is by cylinder cap and cylinder sleeve all-in-one-piece structure, cause the material of cylinder cap also must use material with the identical performance of cylinder sleeve, thus improve the manufacture cost of plunger bushing 5 ', meanwhile, when the cylinder sleeve part of plunger bushing 5 ' is when being subject to the active force of plunger, the plunger bushing 5 ' of integrative-structure, easily by this force transmission to the head part of plunger bushing 5 ', cause the head part of plunger bushing 5 ' to be subject to the effect of alternating stress simultaneously, cause oil hydraulic motor job insecurity.Moreover due to the plunger bushing of integral type, global shape relative complex, is not easy to processing, is also not easy to the precision improving the surface contacted with plunger, therefore also there is the defect of the friction pair wear-resisting property difference between plunger.
Model utility content
The technical problems to be solved in the utility model is the present situation for prior art, provides one to be conducive to reducing precious materials and uses, improve the oil hydraulic motor of stable conditions.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of oil hydraulic motor, comprise housing, be arranged on the confession oil distribution mechanism of this shell end, rotate the transmission shaft be arranged in this housing and the excentric sleeve be arranged on this transmission shaft, on the radial circumference direction of this excentric sleeve, odd number connecting rod-plunger assembly is provided with radially in described housing, described housing side face is provided with the plunger bushing that quantity and described connecting rod-plunger assembly match, described plunger bushing wraps up described connecting rod-plunger assembly, at described plunger bushing, offering being used for of matching with the quantity of described connecting rod-plunger assembly in housing supplies the described oil distribution mechanism that supplies to be multiple oil circuits that described each connecting rod-plunger assembly joins oil, it is characterized in that: the cylinder sleeve that described plunger bushing comprises cylinder cap and is sealed and matched with this cylinder cap, described cylinder cap is arranged on the end of this housing side face, described cylinder sleeve to be arranged in described housing and to wrap up described connecting rod-plunger assembly.
As improvement, between described cylinder cap and the fitting surface of described cylinder sleeve, be provided with seal ring, prevent hydraulic oil from leaking from the joint between cylinder cap and cylinder sleeve.
Improve again, between described cylinder cap and the end face of described housing side face, be provided with seal ring, prevent the hydraulic fluid leak in the oil circuit on cylinder cap and housing.
Improve, described housing side face has shoulder hole, and described cylinder sleeve is set in described shoulder hole again, is convenient to install.
Improve again, described excentric sleeve offering several counterweight holes, being conducive to alleviating the weight of excentric sleeve by arranging counterweight hole, meanwhile, improve the stability that excentric sleeve rotates.
Further, described counterweight hole line centered by the line between the center of excentric sleeve and the center of transmission shaft is arranged symmetrically with.
Further, the pore size in several counterweight holes described is identical, is convenient to the processing in counterweight hole.
Further, described excentric sleeve is connected by flat key with described transmission shaft, and described excentric sleeve is provided with keyway, and being centrally located on described center line of described keyway, is convenient to the layout in counterweight hole.
Compared with prior art, owing to the utility model has the advantage of: relative to existing integrated pole plug sleeve, plunger bushing is divided into cylinder cap and cylinder sleeve two parts by the utility model, cylinder sleeve employing stress performance is good, price material is costly made, and cylinder cap adopts general material, thus be conducive to the manufacture cost reducing plunger bushing; Meanwhile, this split type plunger bushing, makes cylinder sleeve under the alternating stress effect being subject to plunger, and is not easy to by this force transmission to cylinder cap, cut off the transmission of alternating stress, improves the stability of oil hydraulic motor operating mode.Moreover the shape that this split type plunger bushing also makes cylinder sleeve is better simple, is convenient to processing, be conducive to improving machining accuracy, thus can strengthen cylinder sleeve and plunger this to the wear-resisting property between friction pair.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing oil hydraulic motor;
Fig. 2 is the sectional view at A-A place in Fig. 1;
Fig. 3 is the partial enlarged drawing at B place in Fig. 2;
Fig. 4 is the structural representation of the utility model oil hydraulic motor;
Fig. 5 is the sectional view at C-C place in Fig. 4;
Fig. 6 is the partial enlarged drawing at D place in Fig. 5;
Fig. 7 is the structural representation of transmission shaft and excentric sleeve in Fig. 4;
Fig. 8 is plan structure schematic diagram when counterweight hole symmetry is offered on excentric sleeve in Fig. 7;
Fig. 9 is plan structure schematic diagram when the different size in counterweight hole is offered on excentric sleeve in Fig. 7;
Figure 10 is plan structure schematic diagram when excentric sleeve being offered in Fig. 7 formed objects counterweight hole.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Fig. 4 to 10, the oil hydraulic motor in this enforcement, comprises housing 1, for oil distribution mechanism 6, transmission shaft 3, excentric sleeve 2, connecting rod-plunger assembly 4, plunger bushing 5, seal ring 7 and seal ring 8 etc.
Wherein, this housing 1 end is arranged on for oil distribution mechanism 6, transmission shaft 3 rotates and is arranged in this housing 1, excentric sleeve 2 is arranged on this transmission shaft 3, on the radial circumference direction of this excentric sleeve 2, odd number connecting rod-plunger assembly 4 is provided with radially in housing 1, housing 1 side face is provided with the plunger bushing that quantity and connecting rod-plunger assembly 4 match, plunger bushing parcel connecting rod-plunger assembly 4, at plunger bushing 5, offering being used for of matching with the quantity of connecting rod-plunger assembly 4 in housing 1 supplies oil distribution mechanism 6 to be multiple oil circuits that each connecting rod-plunger assembly 4 joins oil, the cylinder sleeve 52 that plunger bushing 5 comprises cylinder cap 51 and is sealed and matched with this cylinder cap 51, cylinder cap 51 is arranged on the end of this housing 1 side face, cylinder sleeve 52 to be arranged in housing 1 and parcel connecting rod-plunger assembly 4.
In order to prevent hydraulic oil from leaking from the joint between cylinder cap 51 and cylinder sleeve 52, between cylinder cap 51 and the fitting surface of cylinder sleeve 52, be provided with seal ring 7.
In order to prevent the hydraulic fluid leak in the oil circuit on cylinder cap 51 and housing 1, between cylinder cap 51 and the end face of housing 1 side face, be provided with seal ring 8.
For the ease of the installation of plunger 41, housing 1 side face has shoulder hole, and cylinder sleeve 52 is set in shoulder hole.
In addition, excentric sleeve 2 offers several counterweight holes 21, counterweight hole 21 line centered by the line between the center of excentric sleeve 2 and the center of transmission shaft 3 is arranged symmetrically with, the weight of excentric sleeve 2 is conducive to alleviating by arranging counterweight hole 21, simultaneously, improve the stability that excentric sleeve 2 rotates, as shown in Figure 9
Further, for the ease of the layout in counterweight hole 21, excentric sleeve 2 is connected by flat key with transmission shaft 3, excentric sleeve 2 is provided with keyway, being centrally located on above-mentioned center line of keyway, the counterweight hole 21 be opened on excentric sleeve 2 can be little counterweight hole 211, may also be large counterweight hole 212, the size in the aperture in each counterweight hole specifically can be determined according to the size of transmission shaft, as shown in Figure 10.
Further, for the ease of the processing in counterweight hole 21, the pore size in several counterweight holes 21 is identical.
Relative to existing integrated pole plug sleeve, plunger bushing 5 is divided into cylinder cap 51 and cylinder sleeve 52 two parts by the utility model, cylinder sleeve 52 adopt stress performance preferably, price material costly makes, and cylinder cap 51 adopts general material, thus the manufacture cost of strong reduction plunger bushing 5; Simultaneously, this split type plunger bushing, make cylinder sleeve 52 under the alternating stress effect being subject to plunger 41, and be not easy to by this force transmission to cylinder cap 51, cut off the transmission of alternating stress, improve the stability of oil hydraulic motor operating mode, and such cylinder sleeve, also be conducive to processing, by improve machining accuracy can strengthen easily cylinder sleeve and plunger this to the wear-resisting property between friction pair, to extend the working life of oil hydraulic motor.
Claims (8)
1. an oil hydraulic motor, comprise housing, be arranged on the confession oil distribution mechanism of this shell end, rotate the transmission shaft be arranged in this housing and the excentric sleeve be arranged on this transmission shaft, on the radial circumference direction of this excentric sleeve, odd number connecting rod-plunger assembly is provided with radially in described housing, described housing side face is provided with the plunger bushing that quantity and described connecting rod-plunger assembly match, described plunger bushing wraps up described connecting rod-plunger assembly, at described plunger bushing, offering being used for of matching with the quantity of described connecting rod-plunger assembly in housing supplies the described oil distribution mechanism that supplies to be multiple oil circuits that described each connecting rod-plunger assembly joins oil, it is characterized in that: the cylinder sleeve that described plunger bushing comprises cylinder cap and is sealed and matched with this cylinder cap, described cylinder cap is arranged on the end of this housing side face, described cylinder sleeve to be arranged in described housing and to wrap up described connecting rod-plunger assembly.
2. oil hydraulic motor according to claim 1, is characterized in that: between described cylinder cap and the fitting surface of described cylinder sleeve, be provided with seal ring.
3. oil hydraulic motor according to claim 2, is characterized in that: between described cylinder cap and the end face of described housing side face, be provided with seal ring.
4. oil hydraulic motor according to claim 3, is characterized in that: on described housing side face, have shoulder hole, described cylinder sleeve is set in described shoulder hole.
5. the oil hydraulic motor according to any one of Claims 1-4, is characterized in that: on described excentric sleeve, offer several counterweight holes.
6. oil hydraulic motor according to claim 5, is characterized in that: described counterweight hole line centered by the line between the center of excentric sleeve and the center of transmission shaft is arranged symmetrically with.
7. oil hydraulic motor according to claim 6, is characterized in that: the pore size in several counterweight holes described is identical.
8. oil hydraulic motor according to claim 6, is characterized in that: described excentric sleeve is connected by flat key with described transmission shaft, and described excentric sleeve is provided with keyway, being centrally located on described center line of described keyway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420702927.5U CN204253272U (en) | 2014-11-21 | 2014-11-21 | Oil hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420702927.5U CN204253272U (en) | 2014-11-21 | 2014-11-21 | Oil hydraulic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204253272U true CN204253272U (en) | 2015-04-08 |
Family
ID=52957589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420702927.5U Active CN204253272U (en) | 2014-11-21 | 2014-11-21 | Oil hydraulic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204253272U (en) |
-
2014
- 2014-11-21 CN CN201420702927.5U patent/CN204253272U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |