CN117780722A - Hydraulic rotary oil cylinder - Google Patents
Hydraulic rotary oil cylinder Download PDFInfo
- Publication number
- CN117780722A CN117780722A CN202410113644.5A CN202410113644A CN117780722A CN 117780722 A CN117780722 A CN 117780722A CN 202410113644 A CN202410113644 A CN 202410113644A CN 117780722 A CN117780722 A CN 117780722A
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- Prior art keywords
- oil
- hole
- bearing seat
- section
- mounting
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- 238000001816 cooling Methods 0.000 claims description 27
- 230000000149 penetrating effect Effects 0.000 claims description 15
- 239000003921 oil Substances 0.000 abstract description 121
- 238000007789 sealing Methods 0.000 abstract description 24
- 239000010720 hydraulic oil Substances 0.000 abstract description 14
- 238000003754 machining Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The invention relates to the field of machinery, and particularly discloses a hydraulic rotary oil cylinder, which at least comprises a shell, a bearing seat, a rotary seat and a piston, wherein bearing mounting grooves are respectively arranged at positions, close to two ends, of an inner ring of the bearing seat, annular first inner oil grooves and annular second inner oil grooves are arranged at intervals on the inner ring of the bearing seat, the shell is in clearance fit with an outer ring of the bearing seat, an oil way joint is directly connected with the bearing seat in a threaded connection mode, hydraulic oil is directly conveyed to the inner oil grooves of the inner ring of the bearing seat, the pressure of the hydraulic oil is not lost, and the pressure of a system is kept more stable; the outer ring of the bearing seat is a smooth wall, only the inner ring is provided with an inner oil groove, the number of grooves and radial oil holes to be processed is far lower than that of the existing structural form, the structure is simpler, the production efficiency is higher, and the cost is lower; the outer ring of the bearing seat and the inner wall of the shell have no technical requirements of sealing and hard connection, and can be set to be in clearance fit, so that the machining precision is reduced, the production cost is lower, and the assembly is more convenient and quick.
Description
Technical Field
The invention relates to the field of machinery, in particular to a hydraulic rotary oil cylinder.
Background
The conventional hydraulic rotary cylinder, as shown in fig. 1 and 2, comprises a casing 10 fixedly arranged, a bearing seat 20 fixedly connected with an inner cavity of the casing 10, a rotary seat 30 rotatably and movably connected with the inner cavity of the bearing seat through a bearing 80, a first end cover 40 fixedly connected with one end of the rotary seat 30, a second end cover 60 fixedly connected with the other end of the rotary seat 30, a liquid accumulation cover 70 positioned at one side of the second end cover and fixedly connected with the casing, and a piston 50 axially penetrating the first end cover, the rotary seat and the second end cover. The structure of the piston 50 is shown in fig. 4, and includes a piston rod 51, a piston disc 52 disposed on the piston rod 51, and a shaft hole 53 axially penetrating the piston rod 51, wherein a piston seal groove 54 is disposed on an outer peripheral wall of the piston disc 52, and the piston disc 52 is disposed in an inner cavity of the first end cover 40 to form a first pressure chamber 41 and a second pressure chamber 42 respectively disposed on two sides of the piston disc.
The hydraulic rotary cylinder of the above structure, wherein the casing 10 is provided with the first oil path joint 12 and the second oil path joint 13, as shown in fig. 3, the outer ring of the bearing seat 20 is provided with two outer oil grooves 23, namely, a first outer oil groove 231 and a second outer oil groove 232, respectively, and the first oil path joint 12 and the second oil path joint 13 are respectively communicated to the first outer oil groove 231 and the second outer oil groove 232. The inner cavity of the bearing seat 20 is provided with two inner oil grooves 24, namely a first inner oil groove 241 and a second inner oil groove 242, which are respectively communicated with the first outer oil groove 231 and the second outer oil groove 232 through a plurality of first radial oil holes 243, and the first inner oil groove 241 and the second inner oil groove 242 are respectively communicated to the first pressure cavity 41 and the second pressure cavity 42 through corresponding oil passages.
The hydraulic rotary cylinder of the above structure, wherein, between the first external oil groove 231 and the second external oil groove 232 and outside of the first external oil groove 231 and the second external oil groove 232 are all provided with bearing seat sealing grooves 25, O-shaped sealing rings 251 are arranged in the bearing seat sealing grooves 25 for realizing the sealing between the bearing seat and the casing.
The hydraulic rotary oil cylinder with the structure has the following defects:
(1) The number of grooves to be machined on the outer ring and the inner cavity of the bearing seat is large, the number of radial oil holes between the inner oil groove and the outer oil groove is large, the structure of the bearing seat is complex, the machining procedures are large, and the cost is high.
(2) The outer ring of the bearing seat is hard-connected with the inner hole of the shell in an interference mode, the requirement of the structural form on machining precision is high, pressure relief can be caused by improper precision control, and the assembly is not easy.
(3) Because the O-shaped sealing ring can be preassembled in the bearing sealing groove, the shearing force born by the O-shaped sealing ring is larger in the process of assembling the bearing seat into the shell, and the O-shaped sealing ring has the risk of being damaged or falling out of the bearing seat sealing groove, so that reworking is performed, and the service life of a product is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a hydraulic rotary oil cylinder with an improved structure, so as to change the structural form and the assembly mode of a bearing seat in the traditional hydraulic rotary oil cylinder.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the hydraulic rotary oil cylinder at least comprises a shell, a bearing seat, a rotary seat and a piston, wherein bearing mounting grooves are respectively arranged at positions, close to two ends, of an inner ring of the bearing seat, annular first inner oil grooves and annular second inner oil grooves are arranged at intervals on the inner ring of the bearing seat, the bearing seat is further provided with a first threaded hole penetrating from an outer ring to the first inner oil grooves and a second threaded hole penetrating from the outer ring to the second inner oil grooves, the shell is provided with a first mounting hole coaxial with the first threaded hole and a second mounting hole coaxial with the second threaded hole, and the shell is in clearance fit with the outer ring of the bearing seat;
the oil way joint at least comprises a threaded section matched with the first threaded hole and the first threaded hole, a connecting section matched with the first mounting hole and the second mounting hole and an oil hole penetrating axially, and the connecting section is sealed with the inner walls of the first mounting hole and the second mounting hole.
In a preferred embodiment, the connecting section is provided with at least one first sealing groove, and a sealing ring is installed in the first sealing groove.
In a preferred embodiment, the side of the connecting section remote from the threaded section is provided with an operating section.
The positioning plug at least comprises a threaded connection section matched with the threaded connection hole and a mounting section matched with the plug mounting hole, and the mounting section is sealed with the plug mounting hole.
In a preferred embodiment, the mounting section is provided with at least one second sealing groove, and a sealing ring is installed in the second sealing groove.
In a preferred embodiment, the number of the positioning plugs is 2, and the positioning plugs are coaxial with two oil way joints respectively.
In a preferred embodiment, the threaded connection hole extends from the outer ring of the bearing housing to the inner ring of the bearing housing.
In a preferred embodiment, an end surface of the mounting section, which is far away from the threaded connection section, is provided with an operating hole.
In a preferred embodiment, the bearing seat is further provided with a cooling oil hole penetrating from the bearing mounting groove to the outer ring of the bearing seat, and a cooling oil groove is arranged between the inner wall of the casing and the outer ring of the bearing seat.
In a preferred embodiment, the cooling oil hole includes an upper cooling oil hole located above and a lower cooling oil hole located below.
Compared with the prior art, the hydraulic rotary oil cylinder has the following beneficial effects:
(1) The oil way joint is directly connected with the bearing seat in a threaded connection mode, hydraulic oil is directly conveyed to the inner oil groove of the inner ring of the bearing seat, and compared with the structure form that the hydraulic oil is conveyed to the outer oil groove of the outer ring of the bearing seat and enters the inner oil groove through a plurality of first radial oil holes in the prior art, the pressure of the hydraulic oil is not lost, and the pressure of the system is kept more stable.
(2) The outer ring of bearing frame is smooth wall, only sets up interior oil groove in the inner ring, and the quantity of groove and radial oilhole that need process is far lower than current structural style, and the structure is simpler, and production efficiency is higher, and the cost is lower.
(3) The outer ring of the bearing seat and the inner wall of the shell have no technical requirements of sealing and hard connection, and can be set to be in clearance fit, so that the machining precision is reduced, the production cost is lower, and the assembly is more convenient and quick.
(4) The quick positioning and connection of the bearing seat and the shell are realized through the matching of the positioning plug and the oil way joint, the process is simple, and the assembly efficiency is higher.
Drawings
FIG. 1 is a schematic view of the external structure of a hydraulic rotary cylinder in the prior art;
FIG. 2 is a schematic cross-sectional view of the hydraulic ram of FIG. 1;
FIG. 3 is a schematic view of a bearing housing in the hydraulic ram of FIG. 1;
FIG. 4 is a schematic diagram of the piston in the hydraulic ram of FIG. 1;
FIG. 5 is a schematic view of the external structure of the hydraulic rotary cylinder according to the first embodiment;
FIG. 6 is a second perspective external structural schematic view of the hydraulic ram according to the first embodiment;
FIG. 7 is a schematic cross-sectional view of a hydraulic ram according to the first embodiment;
FIG. 8 is a schematic diagram of a cross-sectional structure of a hydraulic rotary cylinder according to the first embodiment along a section where a first oil passage and a first oil passage are located;
FIG. 9 is a schematic diagram of a cross-sectional structure of a hydraulic rotary cylinder according to the first embodiment along a section where a second oil path joint and a second oil path channel are located;
FIG. 10 is a schematic view of the external structure of a bearing housing in a hydraulic ram according to the first embodiment;
FIG. 11 is a schematic cross-sectional view of a bearing housing in a hydraulic ram according to the first embodiment;
FIG. 12 is a schematic view showing the external structure of a rotary base in a hydraulic rotary cylinder according to the first embodiment;
FIG. 13 is a schematic cross-sectional view of the rotary seat shown in FIG. 12 along a section of the first oil passage;
FIG. 14 is a schematic cross-sectional view of the rotary seat shown in FIG. 12 along a section of the second oil passage;
fig. 15 is a schematic view showing the external structure of an oil passage joint in a hydraulic rotary cylinder according to the first embodiment;
FIG. 16 is a schematic cross-sectional view of the oil passage joint of FIG. 15;
FIG. 17 is a schematic view of the external structure of a positioning plug in the hydraulic rotary cylinder according to the first embodiment;
FIG. 18 is a schematic cross-sectional view of the positioning plug of FIG. 17;
FIG. 19 is a schematic view in partial cross-section of the installation location of a locating plug in a hydraulic ram of the first embodiment;
FIG. 20 is a schematic cross-sectional view of a hydraulic ram according to a second embodiment;
FIG. 21 is an enlarged partial schematic view of portion A of FIG. 20;
fig. 22 is a schematic structural view of a bearing seat in a hydraulic rotary cylinder according to a second embodiment;
fig. 23 is a schematic cross-sectional view of the bearing housing of fig. 22.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, integrally connected, or detachably connected; may be a communication between the interiors of two elements; may be directly or indirectly through an intermediate medium, and the specific meaning of the terms in the present invention will be understood by those skilled in the art in specific cases.
Example 1
The hydraulic rotary cylinder of this embodiment, as shown in fig. 3-7, includes a casing 10 fixedly arranged, a bearing seat 20 positioned in an inner cavity of the casing 10, a rotary seat 30 rotatably and movably connected with the inner cavity of the bearing seat through a bearing 80, a first end cover 40 fixedly connected with one end of the rotary seat 30, a second end cover 60 fixedly connected with the other end of the rotary seat 30, a liquid accumulation cover 70 positioned at one side of the second end cover and fixedly connected with the casing, and a piston 50 axially penetrating the first end cover, the rotary seat and the second end cover.
In this embodiment, the structure of the piston 50 is the same as that of the prior art, and as shown in fig. 4, the piston comprises a piston rod 51, a piston disc 52 disposed on the piston rod 51, and a shaft hole 53 axially penetrating the piston rod 51, a piston seal groove 54 is disposed on the outer peripheral wall of the piston disc 52, and the piston disc 52 is disposed in the inner cavity of the first end cover 40 to form a first pressure cavity 41 and a second pressure cavity 42 respectively disposed on two sides of the piston disc.
In the present embodiment, the liquid outlet hole 71 is provided at the bottom of the liquid accumulation cover 70 for discharging the liquid flowing out of the shaft hole 53.
In this embodiment, the structure of the rotary seat 30 is shown in fig. 12-14, and includes a first shaft section 301 adapted to be rotatably and movably connected with the inner ring of the bearing seat 20, a second shaft section 302 adapted to be connected with the inner cavity of the casing 10, and a third shaft section 303. Wherein, the external diameter of the second shaft section 302 is greater than the first shaft section 301, the external diameter of the third shaft section 303 is greater than the second shaft section 302, a first step surface 304 is formed between the first shaft section 301 and the second shaft section 302, and a second step surface 305 is formed between the second shaft section 302 and the third shaft section 303.
In this embodiment, as shown in fig. 12 to 13, a first oil passage 31 for communicating with a first pressure chamber 41 is provided inside the rotary seat 30, and a liquid inlet and outlet groove 33 is provided on the first shaft section 301 at the inlet of the first oil passage 31. Preferably, the first oil passage 31 extends in the axial direction.
In this embodiment, as shown in fig. 12 and 14, a second oil passage 32 for communicating with the second pressure chamber 42 is provided in the rotary seat 30, and a liquid inlet and outlet groove 33 is provided in the first shaft section 301 at the inlet of the second oil passage 33. Accordingly, as shown in fig. 9, the first end cap 40 is provided with a third oil passage 43 that communicates with the second oil passage 32, the third oil passage 43 communicating to the second pressure chamber 42.
As a particular feature of the present embodiment, as shown in fig. 10 to 11, in the present embodiment, bearing mounting grooves 22 are respectively provided at positions of the inner ring of the bearing housing 20 near both ends for mounting the bearings 80. The bearing seat 20 is further provided with a first threaded hole 243 penetrating from the outer ring to the first inner oil groove 241 and a second threaded hole 244 penetrating from the outer ring to the second inner oil groove 242. Accordingly, as shown in fig. 8 and 9, the casing 10 is provided with a first mounting hole 141 coaxial with the first screw hole 243 and a second mounting hole 142 coaxial with the second screw hole 244.
As a specific feature of this embodiment, in this embodiment, the casing 10 is in clearance fit with the outer ring of the bearing seat 20, and is connected with the positioning plug in a fit manner through an oil path connector. As shown in fig. 5, the oil passage joints include a first oil passage joint 12 and a second oil passage joint 13. In this embodiment, the first oil path joint 12 is taken as an example, and as shown in fig. 15 to 16, the first oil path joint includes a threaded section 121 adapted to the first threaded hole 243, a connecting section 122 adapted to the first mounting hole 141, an operating section 123 located on a side of the connecting section away from the threaded section, and an oil hole 125 extending axially therethrough.
In the present embodiment, the operating section 123 is a position to be biased when the oil passage joint is rotated, and is preferably nut-shaped in the present embodiment, so that the operation of the wrench is facilitated.
In this embodiment, in a sealing manner between the connection section 122 and the first mounting hole 141, two first sealing grooves 124 are provided on the outer wall of the connection section 122, as shown in fig. 8, and an O-ring 251 is installed in the first sealing groove 124, so as to realize sealing.
Preferably, as shown in fig. 5, in the present embodiment, a first platform 14 is provided on one side of the casing 10, and the first oil passage joint 12 and the second oil passage joint 13 are mounted on the first platform 14.
In this embodiment, the positioning plug 16 is configured as shown in fig. 17-18, and includes a threaded connection section 161 and a mounting section 162. Accordingly, as shown in fig. 10 and 19, a threaded connection hole 245 adapted to the threaded connection section 161 is provided on the outer ring of the bearing housing 20, and the machine 10 is provided with a plug mounting hole 151 coaxial with the threaded connection hole 245.
The mounting section 162 is provided with two second sealing grooves 163, as shown in fig. 19, and an O-ring 251 is mounted in the second sealing grooves 163, so as to realize sealing between the two.
Preferably, in this embodiment, an operation hole 164 is provided on an end surface of the mounting section 162 on a side far away from the threaded connection section, so as to facilitate the rotation of the positioning plug.
As a preferable mode of this embodiment, the number of the positioning plugs is 2, and the positioning plugs are coaxial with the two oil path connectors respectively. As shown in fig. 6, a second platform 15 is provided on the opposite side of the first platform 14, and two positioning plugs 16 are provided on the second platform 15.
Preferably, in this embodiment, the threaded connection hole 245 penetrates from the outer ring of the bearing housing to the inner ring of the bearing housing. The advantage that sets up like this lies in, and the external diameter size of location end cap is unanimous with the oil circuit joint under the condition, and the mounted position can be exchanged, has reduced the degree of difficulty of location in the assembly process, and assembly efficiency is higher.
In this embodiment, hydraulic oil is alternately injected into the first oil path joint and the second oil path joint, so that the hydraulic oil alternately enters the first pressure chamber and the second pressure chamber, and the piston is controlled to axially reciprocate.
In this embodiment, the inner cavity of the bearing seat is in clearance fit with the first shaft section of the rotary seat, and part of hydraulic oil flows from the clearance to two sides and passes through the bearings at two sides to lubricate and cool the bearings. Further, the hydraulic oil passing through the bearing on one side falls into the oil collecting cavity 17 arranged at the bottom of the casing 10 as shown in fig. 8 through the gap between the end surface of the bearing seat and the first step surface, the gap between the casing and the second shaft section, and the oil return groove 34 arranged on the second shaft section. The hydraulic oil passing through the bearing on the other side falls into the oil collecting cavity 17 arranged at the bottom of the casing 10 through the gap between the rest of the second end cover 60 of the casing 10 and the oil return groove. The bottom of the oil collecting cavity 17 is provided with an oil collecting hole 11, so that the hydraulic oil passing through the bearings at two sides is recovered.
Example two
As shown in fig. 20-23, the hydraulic rotary cylinder of the present embodiment is different from the first embodiment in that the bearing housing 20 is further provided with a cooling oil hole penetrating from the bearing mounting groove 22 to the outer ring of the bearing housing. Accordingly, a cooling oil groove 101 is provided between the inner wall of the casing 10 and the outer ring of the bearing housing 20. The cooling oil grooves communicate with the cooling oil holes at the positions of the two bearing mounting grooves 22 in the axial direction.
Preferably, in the present embodiment, the cooling oil holes include an upper cooling oil hole 246 located at the upper side and a lower cooling oil hole 248 located at the lower side. The upper direction in this embodiment refers to a direction away from the oil collecting chamber 17, and the direction in which the oil collecting chamber 17 is located is a lower direction, where the lower cooling oil hole 248 is directly communicated with the oil collecting chamber 17, and the cooling oil groove 101 is communicated with the oil collecting chamber 17.
Preferably, in the present embodiment, the outer ring of the bearing housing is provided with a sink groove 247 at a position where the upper cooling oil hole 246 is located, and further, the bottom of the sink groove 247 is provided with two upper cooling oil holes 246 and distributed in the circumferential direction.
Preferably, in the present embodiment, the lower cooling oil holes 248 are provided in two and distributed in the circumferential direction.
After hydraulic oil passes through the bearing, part of the hydraulic oil enters the cooling oil groove 101 from the upper cooling oil hole 246, and finally flows to the oil collecting cavity 17 along the outer ring of the bearing seat covered by the cooling oil groove 101; part of the oil falls into the oil collecting chamber 17 from the lower cooling oil hole 248. The purpose that sets up like this is, will be because of first oil circuit joint and second oil circuit joint alternately pour into a large amount of heat that the motion produced and take away through hydraulic oil, can carry out more abundant cooling to bearing housing and casing, and the outside temperature of casing is lower and can be more stable.
In summary, the foregoing description is only of the preferred embodiments of the invention, and is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (10)
1. The hydraulic rotary oil cylinder at least comprises a shell, a bearing seat, a rotary seat and a piston, wherein bearing mounting grooves are respectively formed in the positions, close to two ends, of an inner ring of the bearing seat, and are characterized in that annular first inner oil grooves and annular second inner oil grooves are formed in the inner ring of the bearing seat at intervals, the bearing seat is further provided with a first threaded hole penetrating from an outer ring to the first inner oil grooves and a second threaded hole penetrating from the outer ring to the second inner oil grooves, the shell is provided with a first mounting hole coaxial with the first threaded hole and a second mounting hole coaxial with the second threaded hole, and the shell is in clearance fit with the outer ring of the bearing seat;
the oil way joint at least comprises a threaded section matched with the first threaded hole and the first threaded hole, a connecting section matched with the first mounting hole and the second mounting hole and an oil hole penetrating axially, and the connecting section is sealed with the inner walls of the first mounting hole and the second mounting hole.
2. The hydraulic ram of claim 1, wherein the connecting section is provided with at least one first seal groove, and wherein a seal ring is mounted in the first seal groove.
3. The hydraulic ram of claim 2, wherein the connection section is provided with an operating section on a side remote from the threaded section.
4. The hydraulic ram of claim 1, further comprising at least one locating plug, wherein a threaded connection hole adapted to the locating plug is provided in an outer ring of the bearing housing, the housing is provided with a plug mounting hole coaxial with the threaded connection hole, the locating plug comprises at least a threaded connection section adapted to the threaded connection hole and a mounting section adapted to the plug mounting hole, and the mounting section is sealed with the plug mounting hole.
5. The hydraulic ram of claim 4, wherein the mounting section is provided with at least one second seal groove having a seal ring mounted therein.
6. The hydraulic ram of claim 5, wherein the number of said locating plugs is 2, each coaxial with two of said oil line connectors.
7. The hydraulic ram of claim 6, wherein the threaded connection hole extends from an outer race of the housing to an inner race of the housing.
8. The hydraulic ram of claim 4, wherein an end surface of the mounting section on a side remote from the threaded connection section is provided with an operation hole.
9. The hydraulic rotary cylinder according to any one of claims 1 to 8, wherein the bearing housing is further provided with a cooling oil hole penetrating from the bearing mounting groove to an outer ring of the bearing housing, and a cooling oil groove is provided between an inner wall of the housing and the outer ring of the bearing housing.
10. The hydraulic ram of claim 9, wherein the cooling oil hole includes an upper cooling oil hole located above and a lower cooling oil hole located below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410113644.5A CN117780722B (en) | 2024-01-26 | 2024-01-26 | Hydraulic rotary oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410113644.5A CN117780722B (en) | 2024-01-26 | 2024-01-26 | Hydraulic rotary oil cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117780722A true CN117780722A (en) | 2024-03-29 |
| CN117780722B CN117780722B (en) | 2024-09-10 |
Family
ID=90389392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410113644.5A Active CN117780722B (en) | 2024-01-26 | 2024-01-26 | Hydraulic rotary oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117780722B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB761157A (en) * | 1953-03-09 | 1956-11-14 | Prec Ind | Improvements in or relating to hydraulic rotary distributors |
| GB2034624A (en) * | 1978-11-04 | 1980-06-11 | Roehm Guenter H | Hydraulically actuated hollow clamping cylinder for clamping devices on a rotating spindle |
| US4249451A (en) * | 1977-04-07 | 1981-02-10 | La Precision Industrielle | Rotary hydraulic jack device |
| JPS59156604A (en) * | 1983-02-25 | 1984-09-05 | ギユンタ−・ホルスト・レ−ム | Hydraulic type chuck cylinder for chuck device in rotating spindle |
| US4523632A (en) * | 1979-04-26 | 1985-06-18 | Kitagawa Iron Works Co. Ltd. | Cooling system of rotary fluid pressure cylinder for chucking in machine tools |
| DE4240959A1 (en) * | 1992-12-05 | 1994-06-09 | Smw Schneider & Weishaupt Gmbh | Clamping device for a clamping tool |
| DE10319815A1 (en) * | 2003-04-30 | 2004-11-18 | A. Römheld GmbH & Co KG | Clamping element for clamping workpieces on machine tables, devices or pallets |
| CN101550955A (en) * | 2009-05-08 | 2009-10-07 | 哈尔滨工业大学 | Rotary cylinder using planar end oil film for sealing hydraulic slipring |
| CN105889168A (en) * | 2014-11-27 | 2016-08-24 | 王华裕 | Energy-saving type pressurization rotating cylinder |
| CN209598955U (en) * | 2019-02-28 | 2019-11-08 | 大连誉洋工业智能有限公司 | A kind of tensioning mechanism and the workpiece rotating device using the mechanism |
| CN210164710U (en) * | 2019-04-23 | 2020-03-20 | 浙江京速机床附件有限公司 | Medium-pressure and solid-pressure rotary cylinder |
-
2024
- 2024-01-26 CN CN202410113644.5A patent/CN117780722B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB761157A (en) * | 1953-03-09 | 1956-11-14 | Prec Ind | Improvements in or relating to hydraulic rotary distributors |
| US2835227A (en) * | 1953-03-09 | 1958-05-20 | Prec Ind | Hydraulic rotary distributor and its application to operating jacks for work-holdersof machine-tools |
| US4249451A (en) * | 1977-04-07 | 1981-02-10 | La Precision Industrielle | Rotary hydraulic jack device |
| GB2034624A (en) * | 1978-11-04 | 1980-06-11 | Roehm Guenter H | Hydraulically actuated hollow clamping cylinder for clamping devices on a rotating spindle |
| US4523632A (en) * | 1979-04-26 | 1985-06-18 | Kitagawa Iron Works Co. Ltd. | Cooling system of rotary fluid pressure cylinder for chucking in machine tools |
| JPS59156604A (en) * | 1983-02-25 | 1984-09-05 | ギユンタ−・ホルスト・レ−ム | Hydraulic type chuck cylinder for chuck device in rotating spindle |
| DE4240959A1 (en) * | 1992-12-05 | 1994-06-09 | Smw Schneider & Weishaupt Gmbh | Clamping device for a clamping tool |
| DE10319815A1 (en) * | 2003-04-30 | 2004-11-18 | A. Römheld GmbH & Co KG | Clamping element for clamping workpieces on machine tables, devices or pallets |
| CN101550955A (en) * | 2009-05-08 | 2009-10-07 | 哈尔滨工业大学 | Rotary cylinder using planar end oil film for sealing hydraulic slipring |
| CN105889168A (en) * | 2014-11-27 | 2016-08-24 | 王华裕 | Energy-saving type pressurization rotating cylinder |
| CN209598955U (en) * | 2019-02-28 | 2019-11-08 | 大连誉洋工业智能有限公司 | A kind of tensioning mechanism and the workpiece rotating device using the mechanism |
| CN210164710U (en) * | 2019-04-23 | 2020-03-20 | 浙江京速机床附件有限公司 | Medium-pressure and solid-pressure rotary cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117780722B (en) | 2024-09-10 |
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