CN204827787U - Hydraulic motor of low noise - Google Patents
Hydraulic motor of low noise Download PDFInfo
- Publication number
- CN204827787U CN204827787U CN201520565693.9U CN201520565693U CN204827787U CN 204827787 U CN204827787 U CN 204827787U CN 201520565693 U CN201520565693 U CN 201520565693U CN 204827787 U CN204827787 U CN 204827787U
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- plunger
- hydraulic motor
- plunger bushing
- housing
- connecting rod
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Abstract
The utility model discloses a hydraulic motor of low noise, including the casing, rotate to set up the transmission shaft in this casing and set up at the epaxial eccentric sleeve of this transmission be provided with an odd number connecting rod - plunger subassembly in the casing on this eccentric sleeve's radial circumferencial direction, the outer wall parcel of every plunger has the cylinder liner in the casing, is equipped with plunger bushing, its characterized in that at the global tip of casing radially: contact surface between the tip of plunger bushing and the tip of casing is the reference surface, being formed with the clearance between the tip of plunger bushing and the tip of cylinder liner, opening to have on the tip of this cylinder liner and fall the groove of making an uproar, fall the inslot of making an uproar at this and be equipped with sealing washer and non metallic member retaining ring in proper order, this non metallic member retaining ring offsets with the tip of plunger bushing. The utility model discloses utilize nonmetal retaining ring to keep apart cylinder liner and plunger bushing, can effectively solve the current big problem of hydraulic motor operating noise, improve hydraulic motor's life.
Description
Technical field
The utility model relates to a kind of oil hydraulic motor, particularly relates to a kind of oil hydraulic motor of low noise.
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, be arranged on the 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 housing, each connecting rod-plunger assembly comprises connecting rod and plunger, in housing, the outer wall of each plunger is enclosed with cylinder sleeve, the plunger bushing matched with the quantity of described connecting rod-plunger assembly is provided with in the end of housing side face, at plunger bushing, offering being used for of matching with the quantity of connecting rod-plunger assembly in housing supplies oil distribution mechanism to be multiple oil circuits that each connecting rod-plunger assembly joins oil.Radial piston hydraulic motor working principle is, when pressure oil is through oil distribution mechanism, connecting rod-plunger assembly, acts on excentric sleeve and excentric sleeve is rotated, by transmission shaft Driving Torque and rotating speed.
But, existing radial piston hydraulic motor can not prevent hydraulic fluid leak in housing out due to the structure between plunger bushing and housing and cylinder sleeve, the sealing configurations such as seal ring are adopted, though certain leakproof effect can be played at housing and plunger bushing, fitting surface between cylinder sleeve and plunger bushing.But, because housing, plunger bushing and cylinder sleeve are metal material, in oil hydraulic motor working procedure, due to the existence in gap between the fitting surface being provided with seal ring, both collisions can not be avoided and impact, thus cause the problem that existing oil hydraulic motor operational noise is large, meanwhile, also reduce the working life of oil hydraulic motor.
Model utility content
The technical problems to be solved in the utility model is the present situation for prior art, provides a kind of oil hydraulic motor of low noise, effectively can solve existing oil hydraulic motor and run the large problem of noise, improve the working life of oil hydraulic motor.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of oil hydraulic motor of low noise, comprise housing, be arranged on the 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, each connecting rod-plunger assembly comprises connecting rod and plunger, in housing, the outer wall of each plunger is enclosed with cylinder sleeve, the plunger bushing matched with the quantity of described connecting rod-plunger assembly is provided with in the end of housing side face, at described plunger bushing, offering being used for of matching with the quantity of described connecting rod-plunger assembly in housing supplies described oil distribution mechanism to be multiple oil circuits that described each connecting rod-plunger assembly joins oil, it is characterized in that: the surface of contact between the end of described plunger bushing and the end of housing is reference level, gap is formed between the end of described plunger bushing and the end of cylinder sleeve, the end of this cylinder sleeve has noise reduction groove, seal ring and non-metallic material back-up ring is provided with successively in this noise reduction groove, the end of this non-metallic material back-up ring and plunger bushing offsets.
Preferably, described gap is 0.05 ~ 0.1mm.
Further, the end of described plunger bushing is formed with step, step surface lower on shell end and plunger bushing end offsets, and step surface higher on cylinder sleeve end and plunger bushing end offsets.
In order to improve the sealing between plunger bushing and cylinder sleeve, the end of described cylinder sleeve having seal groove, in sealing groove, being provided with seal ring.
Further, in order to improve bearing capacity, reduce wear, the endoporus of described excentric sleeve is axial direct through hole, is provided with the several rollers be enclosed within transmission shaft, between adjacent roller, is provided with barrier in this clear opening.
Compared with prior art, owing to the utility model has the advantage of: the surface of contact between the utility model adopts between housing and plunger bushing is reference level, between plunger bushing and cylinder sleeve, seal ring is utilized to be resisted against on plunger bushing end face by non-metallic material back-up ring, avoid plunger bushing and cylinder sleeve Contact, simultaneously, back-up ring due to non-metallic material has the advantages that to absorb noise, when greatly reducing oil hydraulic motor work, plunger bushing and cylinder sleeve directly contact produced noise, thus effectively can solve the large problem of existing oil hydraulic motor operation noise, improve the working life of oil hydraulic motor.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1;
Fig. 3 is the partial enlarged drawing at B place in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Figures 1 to 3, the utility model discloses a kind of oil hydraulic motor of low noise, comprise housing 1, oil distribution mechanism 7, transmission shaft 2, excentric sleeve 3, connecting rod-plunger assembly 4, cylinder sleeve 6, plunger bushing 5, non-metallic material back-up ring 9, seal ring 10, seal ring 8, roller 11 and barrier 12.
Wherein, oil distribution mechanism 7 is arranged on this housing 1 end, transmission shaft 2 rotates and is arranged in this housing 1, excentric sleeve 3 is arranged on this transmission shaft 2, on the radial circumference direction of this excentric sleeve 3, odd number connecting rod-plunger assembly 4 is provided with radially in housing 1, each connecting rod-plunger assembly 4 comprises connecting rod 42 and plunger 41, in housing 1, the outer wall of each plunger 41 is enclosed with cylinder sleeve 6, the plunger bushing 5 matched with the quantity of connecting rod-plunger assembly 4 is provided with in the end of housing 1 side face, 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 7 to be multiple oil circuits that each connecting rod-plunger assembly 4 joins oil, in order to reduce noise during oil hydraulic motor work, surface of contact between the end of plunger bushing 5 and the end of housing 1 is reference level, gap is formed between the end of plunger bushing 5 and the end of cylinder sleeve 6, preferably, this gap is 0.05 ~ 0.1mm, the end of this cylinder sleeve 6 has noise reduction groove, seal ring 10 and non-metallic material back-up ring 9 is provided with successively in this noise reduction groove, preferably, non-metallic material back-up ring 9 is polytetrafluoro back-up ring, this non-metallic material back-up ring 9 offsets with the end of plunger bushing 5.
In addition, the end of plunger bushing 5 is formed with step, step surface lower on housing 1 end and plunger bushing 5 end offsets, and step surface higher on cylinder sleeve 6 end and plunger bushing 5 end offsets,
In order to improve the sealing between plunger bushing 5 and cylinder sleeve 6, the end of cylinder sleeve 6 having seal groove, in sealing groove, being provided with seal ring 8.
In addition, the endoporus of excentric sleeve 3 is axial direct through hole, the several rollers 11 be enclosed within transmission shaft 2 are provided with in this clear opening, barrier is provided with between adjacent roller, barrier 12 is provided with between adjacent roller 11, the Placement of relatively existing excentric sleeve 3 and transmission shaft 2, improve quality of fit, simultaneously, barrier 12 plays and reduces frictional force between roller 11, several roller 11, add roller 11 and the force bearing point between excentric sleeve 3 and transmission shaft 2, dispersion transmission shaft 2 and excentric sleeve 3 stressed, reduce wearing and tearing between the two, improve bearing capacity.
To sum up, surface of contact between the utility model adopts between housing 1 and plunger bushing 5 is reference level, between plunger bushing 5 and cylinder sleeve 6, seal ring 10 is utilized to be resisted against by non-metallic material back-up ring 9 on plunger bushing 5 end face, avoid plunger bushing 5 and cylinder sleeve 6 Contact, simultaneously, because non-metallic material back-up ring 9 has absorption noise, reduce the effect of noise, when greatly reducing oil hydraulic motor work, plunger bushing 8 directly contacts produced noise with cylinder sleeve 9, thus effectively can solve the large technical problem of existing oil hydraulic motor operation noise, improve the working life of oil hydraulic motor.
Claims (5)
1. the oil hydraulic motor of a low noise, comprise housing, be arranged on the 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, each connecting rod-plunger assembly comprises connecting rod and plunger, in housing, the outer wall of each plunger is enclosed with cylinder sleeve, the plunger bushing matched with the quantity of described connecting rod-plunger assembly is provided with in the end of housing side face, at described plunger bushing, offering being used for of matching with the quantity of described connecting rod-plunger assembly in housing supplies described oil distribution mechanism to be multiple oil circuits that described each connecting rod-plunger assembly joins oil, it is characterized in that: the surface of contact between the end of described plunger bushing and the end of housing is reference level, gap is formed between the end of described plunger bushing and the end of cylinder sleeve, the end of this cylinder sleeve has noise reduction groove, seal ring and non-metallic material back-up ring is provided with successively in this noise reduction groove, the end of this non-metallic material back-up ring and plunger bushing offsets.
2. oil hydraulic motor according to claim 1, is characterized in that: described gap is 0.05 ~ 0.1mm.
3. oil hydraulic motor according to claim 1, is characterized in that: the end of described plunger bushing is formed with step, and step surface lower on shell end and plunger bushing end offsets, and step surface higher on cylinder sleeve end and plunger bushing end offsets.
4. oil hydraulic motor according to claim 3, is characterized in that: the end of described cylinder sleeve has seal groove, in sealing groove, be provided with seal ring.
5. the oil hydraulic motor according to any one of Claims 1-4, is characterized in that: the endoporus of described excentric sleeve is axial direct through hole, is provided with the several rollers be enclosed within transmission shaft, between adjacent roller, is provided with barrier in this clear opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520565693.9U CN204827787U (en) | 2015-07-30 | 2015-07-30 | Hydraulic motor of low noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520565693.9U CN204827787U (en) | 2015-07-30 | 2015-07-30 | Hydraulic motor of low noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204827787U true CN204827787U (en) | 2015-12-02 |
Family
ID=54685396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520565693.9U Active CN204827787U (en) | 2015-07-30 | 2015-07-30 | Hydraulic motor of low noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204827787U (en) |
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2015
- 2015-07-30 CN CN201520565693.9U patent/CN204827787U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |