CN223330878U - Compact type swing hydraulic cylinder for mechanical arm - Google Patents
Compact type swing hydraulic cylinder for mechanical armInfo
- Publication number
- CN223330878U CN223330878U CN202422795706.3U CN202422795706U CN223330878U CN 223330878 U CN223330878 U CN 223330878U CN 202422795706 U CN202422795706 U CN 202422795706U CN 223330878 U CN223330878 U CN 223330878U
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- main shaft
- section
- shaft
- supporting sleeve
- outer shell
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Abstract
The utility model provides a compact type swing hydraulic cylinder for a mechanical arm, which is provided with an outer shell, wherein a main shaft is arranged in the outer shell, a main shaft left side supporting sleeve and a main shaft right side supporting sleeve are respectively arranged between shaft sections positioned at two sides of the circumference of the outer shell on the main shaft and the inner circumference of the outer shell, a main shaft middle supporting sleeve is arranged between the main shaft left side supporting sleeve and the main shaft right side supporting sleeve and positioned in the outer shell, the outer circumference of the main shaft middle supporting sleeve is fixedly connected with the inner circumference of the outer shell, the inner circumference of the main shaft middle supporting sleeve is rotatably and hermetically connected with the outer circumference of the main shaft, and the main shaft left side supporting sleeve and the main shaft middle supporting sleeve axially limit-support the main shaft. According to the swing hydraulic cylinder, the groove is formed in the outer circumference of the main shaft, machining is convenient and quick, machining accuracy is high, the groove in the outer circumference of the main shaft is internally provided with the sealing ring, and sealing performance between the outer shell and the main shaft supporting sleeve and between the main shaft supporting sleeve and the main shaft is effectively improved. The utility model can be widely applied to compact swing hydraulic cylinders.
Description
Technical Field
The utility model relates to a swing hydraulic cylinder, in particular to a compact swing hydraulic cylinder for a mechanical arm.
Background
Swinging hydraulic cylinder is a special hydraulic cylinder, is mainly used for providing high torque rotary motion in a limited space, and has the advantages of compact structure, safety, reliability, small occupied space, easy design, large output torque and swinging angle and the like.
Because the hydraulic oil is injected into the swing hydraulic cylinder, the sealing strength in the cylinder has a larger standard requirement, most of the existing hydraulic cylinders are provided with grooves on the inner wall of the outer shell and the inner wall of the main shaft supporting sleeve, and the grooves are internally provided with sealing rings to ensure the tightness between the outer shell and the main shaft supporting sleeve and between the main shaft supporting sleeve and the main shaft, but for small-sized hydraulic cylinders such as small-sized hydraulic cylinders used by mechanical arms, the processing difficulty of the grooves on the inner wall of the outer shell and the inner wall of the main shaft supporting sleeve is larger, the processing precision of the grooves cannot be ensured, and finally the tightness between the outer shell and the main shaft supporting sleeve cannot be ensured.
Disclosure of utility model
Aiming at the technical problems, the utility model provides the compact type swing hydraulic cylinder for the mechanical arm, which is convenient and quick to process and high in processing precision by arranging a plurality of grooves on the outer circumference of a main shaft, so that the problem that the difficulty in processing the grooves on the circumference of the inner shell of the swing cylinder is high due to the fact that the whole volume of the swing cylinder is smaller is solved;
And through placing dustproof sealing ring, fluid sealing washer, wear-resisting back up pad respectively in the recess, wherein, through dustproof sealing ring, fluid sealing washer, can effectively improve between shell body and the main shaft support cover, and the leakproofness between main shaft support cover and the main shaft, through wear-resisting back up pad, when can increasing the main shaft rotation, support wear resistance between main shaft and the main shaft support cover, guarantee simultaneously and rotate frictional smooth and easy degree between main shaft and the main shaft support cover, resistance when reducing the main shaft rotation reduces the operation noise, thereby realize the long-time steady operation of swinging cylinder, increase of service life.
Therefore, the technical scheme of the utility model is that the compact type swing hydraulic cylinder for the mechanical arm is provided with an outer shell, wherein the outer shell is provided with a left oil hole and a right oil hole, and the two sides of the outer circumference of the outer shell are respectively and fixedly provided with a left fixed supporting sleeve and a right fixed supporting sleeve;
The inside of the outer shell is provided with a main shaft, shaft sections on two sides of the main shaft are positioned outside the outer shell, a main shaft left side supporting sleeve and a main shaft right side supporting sleeve are respectively arranged between the shaft sections on two sides of the inner circumference of the outer shell on the main shaft, the outer circumferences of the main shaft left side supporting sleeve and the main shaft right side supporting sleeve are respectively and fixedly connected with the inner circumference of the outer shell in a sealing way, and the inner circumferences of the main shaft left side supporting sleeve and the main shaft right side supporting sleeve are respectively and rotatably connected with the outer circumference of the main shaft in a sealing way;
A main shaft middle supporting sleeve is arranged in the outer shell between the main shaft left supporting sleeve and the main shaft right supporting sleeve, the outer circumference of the main shaft middle supporting sleeve is fixedly connected with the inner circumference of the outer shell, and the inner circumference of the main shaft middle supporting sleeve is rotationally and hermetically connected with the outer circumference of the main shaft;
the main shaft is axially limited and supported by the main shaft left side supporting sleeve and the main shaft middle supporting sleeve;
A rotary piston is arranged between the outer circumference of the main shaft and the inner circumference of the outer shell, the outer circumference and the inner circumference of one side of the rotary piston are respectively meshed with the inner circumference of the outer shell and the outer circumference of the main shaft, the outer circumference and the inner circumference of the other side of the rotary piston are respectively rotationally sealed on the inner circumference of the outer shell and the outer circumference of the main shaft, the rotary piston can axially rotate and translate between the main shaft and the outer shell, and the rotary piston can drive the main shaft to rotate while axially rotating and translating;
An oil cavity is formed among the main shaft middle supporting sleeve, the main shaft and the main shaft right supporting sleeve, and the two sides of the oil cavity are respectively communicated with the left oil hole and the right oil hole.
Preferably, a first spindle section, a second spindle section, a third spindle section, a fourth spindle section, a fifth spindle section and a sixth spindle section are sequentially arranged on the spindle from left to right;
the first spindle section and the sixth spindle section are respectively positioned outside the outer shell, the second spindle section and the fifth spindle section are respectively positioned at two sides of the inner circumference of the outer shell, and the third spindle section and the fourth spindle section are respectively positioned at the middle position of the inner circumference of the outer shell;
The main shaft left side support sleeve is positioned between the main shaft second shaft section and the leftmost inner circumference of the outer shell, and the main shaft right side support sleeve is positioned between the main shaft fifth shaft section and the rightmost inner circumference of the outer shell;
The outer circles Zhou Jun of the second shaft section and the fifth shaft section of the main shaft are provided with a plurality of grooves, a wear-resistant supporting pad, an oil liquid sealing ring and a dustproof sealing ring are respectively arranged in the grooves, and the wear-resistant supporting pad, the oil liquid sealing ring and the dustproof sealing ring are sequentially arranged on the outer circumferences of the second shaft section and the fifth shaft section of the main shaft from inside to outside;
The outer circumferences of the main shaft left support sleeve and the main shaft right support sleeve are respectively provided with a plurality of grooves, an oil liquid sealing ring and a dustproof sealing ring are respectively arranged in the grooves, and the oil liquid sealing ring and the dustproof sealing ring are sequentially arranged from inside to outside on the outer circumferences of the main shaft left support sleeve and the main shaft right support sleeve;
The main shaft third shaft section is positioned at the inner side of the main shaft left side supporting sleeve, extends outwards to form a step shaft structure, and the two axial sides of the main shaft third shaft section of the step shaft structure are respectively provided with a first shaft shoulder and a second shaft shoulder;
The third shaft section of the main shaft is positioned at the position of the first shaft shoulder between the support sleeves on the left side of the main shaft a wear-resistant supporting pad is arranged.
Preferably, the main shaft middle support sleeve is positioned between the second shoulder position on the outer circumference of the main shaft third shaft section and the inner circumference of the outer shell, the outer circumference of the main shaft middle support sleeve is fixedly connected with the inner circumference of the outer shell, the inner circumference of the main shaft middle support sleeve is provided with a groove, an oil liquid sealing ring is arranged in the groove, and the inner circumference of the main shaft middle support sleeve is rotationally sealed with the outer circumference of the main shaft third shaft section through the oil liquid sealing ring;
a wear-resistant supporting pad is arranged between the main shaft middle supporting sleeve and the position of the main shaft third shaft section, which is positioned on the second shaft shoulder;
The left side support sleeve and the middle support sleeve of the main shaft realize axial limiting and rotating support on the third shaft section of the main shaft through wear-resistant support pads positioned at the first shaft shoulder and the second shaft shoulder respectively.
Preferably, the rotary piston comprises a rotary piston rotary support section and a rotary piston rotary seal section, the rotary piston rotary support section is positioned at the left side of the rotary piston, and the rotary piston rotary seal section is positioned at the right side of the rotary piston;
The outer circumference of the rotary piston rotary support section is in threaded engagement with the inner circumference of the outer shell, and the inner circumference of the rotary piston rotary support section is in threaded engagement with the outer circumference of the fourth shaft section of the main shaft;
The outer circumference of the rotary piston rotary sealing section is provided with a groove, an oil liquid sealing ring is arranged in the groove, and rotary sealing is carried out between the outer circumference of the rotary piston rotary sealing section and the inner circumference of the outer shell through the oil liquid sealing ring;
The inner circumference of the rotary piston rotary sealing section is provided with a groove, an oil liquid sealing ring is arranged in the groove, and rotary sealing is carried out between the inner circumference of the rotary piston rotary sealing section and the outer circumference of the fourth shaft section of the main shaft through the oil liquid sealing ring;
The rotary piston rotary seal segment divides the oil cavity into a left oil cavity and a right oil cavity, the left oil cavity is communicated with the left oil hole, and the right oil cavity is communicated with the right oil hole.
The beneficial effects of the utility model are as follows:
1. According to the swing cylinder, the grooves are formed in the outer circumference of the main shaft, machining is convenient and quick, machining precision is high, and the grooves in the outer circumference of the main shaft are respectively provided with the wear-resistant supporting pad, the oil liquid sealing ring and the dustproof sealing ring, wherein the wear-resistant supporting pad can prevent direct friction between the main shaft and the main shaft supporting sleeve, so that noise of the swing cylinder is increased, friction resistance between the main shaft and the main shaft supporting sleeve is reduced, and stability of the main shaft during rotation is improved;
By arranging the oil sealing ring, the hydraulic oil in the oil cavity can be prevented from leaking outwards through corresponding gaps, and the tightness between the outer shell and the main shaft supporting sleeve and between the main shaft supporting sleeve and the main shaft is effectively improved;
Through set up dustproof sealing ring in the outside, dust, the foreign matter in the external environment can be avoided entering into in the jar, damage is caused to relevant part.
2. Because the main shaft left side support sleeve and the main shaft middle support sleeve realize axial limiting rotary support to the main shaft third shaft section through the wear-resisting support pads positioned at the first shaft shoulder and the second shaft shoulder respectively, axial positioning support is realized to the main shaft, when the main shaft rotates, under the support action of the wear-resisting support pads on two sides, the condition of axial shaking when the main shaft rotates can be avoided, and the stability of the integral operation of the swinging cylinder and the accuracy of the main shaft swinging are ensured.
Drawings
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is another perspective view of the present utility model;
FIG. 3 is a front view of the present utility model;
FIG. 4 is a cross-sectional view A-A of FIG. 3 in accordance with the present utility model;
FIG. 5 is a schematic view of the spindle configuration of the present utility model;
fig. 6 is an enlarged view of fig. 4 at B in accordance with the present utility model.
The symbols in the drawings illustrate:
1. The oil-saving type rotary oil pump comprises an outer shell, a left oil hole, a right oil hole, a left fixed supporting sleeve, a right fixed supporting sleeve, a left main shaft supporting sleeve, a right main shaft supporting sleeve, a main shaft, a first main shaft section, a second main shaft section, a third main shaft section, a first shaft shoulder, a second shaft shoulder, a fourth main shaft section, a fifth main shaft section, a sixth main shaft section, a middle main shaft supporting sleeve, a rotary piston rotary supporting section, a rotary piston rotary sealing section, a dustproof sealing ring, an oil sealing ring, a wear-resisting supporting pad, an oil cavity, a left oil cavity and a right oil cavity.
Detailed Description
The utility model is further described below with reference to examples.
As can be seen from fig. 1 to 6, the compact swing hydraulic cylinder for the mechanical arm is provided with an outer shell 1, a left oil hole 2 and a right oil hole 3 are formed in the outer shell 1, a left fixed support sleeve 4 and a right fixed support sleeve 5 are fixedly arranged on two sides of the outer circumference of the outer shell 1 respectively, and the left fixed support sleeve 4 and the right fixed support sleeve 5 are used for normal connection operation with the mechanical arm, so that the whole torsional strength of the outer shell 1 can be increased, the rigidity of the outer shell 1 is improved, and the stability of the whole swing operation of the swing cylinder is ensured.
The inside of shell 1 is equipped with main shaft 8, the both sides axle section of main shaft 8 is located the outside of shell 1 for normal installation operation uses, be equipped with main shaft left side support sleeve 6 and main shaft right side support sleeve 7 between the axle section that is located the both sides position of shell 1 inner circumference on main shaft 8 and the inner circumference of shell 1 respectively, seal fixed connection between the outer circumference of main shaft left side support sleeve 6 and main shaft right side support sleeve 7 and the inner circumference of shell 1 respectively, the inner circumference of main shaft left side support sleeve 6 and main shaft right side support sleeve 7 respectively with the outer circumference rotary seal connection of main shaft 8, realize static oil seal between main shaft left and right side support sleeve and shell 1 on the one hand, on the other hand guarantee the leakproofness between main shaft left and right side support sleeve and the main shaft 8 when main shaft 8 rotates, avoid the fluid in the oil pocket outwards to leak.
The inside that is located shell 1 between main shaft left side support cover 6 and the main shaft right side support cover 7 is equipped with main shaft intermediate support cover 9, and the outer periphery of main shaft intermediate support cover 9 and the interior circumference fixed connection of shell 1, the interior circumference of main shaft intermediate support cover 9 and the outer periphery rotation sealing connection of main shaft 8 avoid the fluid in the oil pocket to outwards leak along the gap between main shaft intermediate support cover 9 and the main shaft 8.
The main shaft 8 is axially limited and supported by the main shaft left side supporting sleeve 6 and the main shaft middle supporting sleeve 9, normal operation rotation of the main shaft 8 at a fixed position is guaranteed, axial shaking is avoided when the main shaft 8 rotates, and the stability of integral operation of the swinging cylinder and the accuracy of the main shaft 8 during swinging are guaranteed.
A rotary piston 10 is arranged between the outer circumference of the main shaft 8 and the inner circumference of the outer shell 1, the outer circumference and the inner circumference of one side of the rotary piston 10 are respectively meshed with the inner circumference of the outer shell 1 and the outer circumference of the main shaft 8, the outer circumference and the inner circumference of the other side of the rotary piston 10 are respectively rotationally sealed on the inner circumference of the outer shell 1 and the outer circumference of the main shaft 8, the rotary piston 10 can axially rotate and translate between the main shaft 8 and the outer shell 1, and the rotary piston 10 can drive the main shaft 8 to rotate while axially rotating and translating, so that swinging operation is completed.
An oil cavity 14 is formed among the main shaft middle supporting sleeve 9, the main shaft 8 and the main shaft right supporting sleeve 7, and two sides of the oil cavity 14 are respectively communicated with the left oil hole 2 and the right oil hole 3.
The main shaft 8 is provided with a main shaft first shaft section 801, a main shaft second shaft section 802, a main shaft third shaft section 803, a main shaft fourth shaft section 804, a main shaft fifth shaft section 805 and a main shaft sixth shaft section 806 in sequence from left to right,
The first spindle section 801 and the sixth spindle section 806 are located outside the outer casing 1, respectively, for normal installation work use, and the second spindle section 802 and the fifth spindle section 805 are located at both side positions of the inner circumference of the outer casing 1, respectively, and the third spindle section 803 and the fourth spindle section 804 are located at intermediate positions of the inner circumference of the outer casing 1, respectively.
The spindle left side support sleeve 6 is located between the spindle second shaft section 802 and the leftmost inner circumference of the outer housing 1, and the spindle right side support sleeve 7 is located between the spindle fifth shaft section 805 and the rightmost inner circumference of the outer housing 1.
The outer circles Zhou Jun of the main shaft second shaft section 802 and the main shaft fifth shaft section 805 are provided with a plurality of grooves, and the grooves are respectively internally provided with a wear-resistant supporting pad 13, an oil liquid sealing ring 12 and a dust-proof sealing ring 11, wherein the wear-resistant supporting pad 13, the oil liquid sealing ring 12 and the dust-proof sealing ring 11 are sequentially arranged on the outer circumferences of the main shaft second shaft section 802 and the main shaft fifth shaft section 805 from inside to outside.
The wear-resistant supporting pad 13 is made of materials with high wear resistance, high supporting force and high guiding stability, such as PTFE+copper powder, phenolic cloth, wood veneer, nylon and the like, so that direct friction between the main shaft 8 and the outer shell 1 can be avoided, noise of the swinging cylinder is increased, friction resistance between the main shaft 8 and the outer shell 1 is reduced, and stability of the main shaft 8 during rotation is improved.
By providing the oil seal ring 12, the hydraulic oil in the oil chamber 14 can be prevented from leaking out through the corresponding gap.
By providing the dust seal 11 at the outermost side, dust and foreign matter in the external environment can be prevented from entering the cylinder, and damage to the relevant parts can be prevented.
The outer circles Zhou Jun of the main shaft left side supporting sleeve 6 and the main shaft right side supporting sleeve 7 are provided with a plurality of grooves, an oil liquid sealing ring 12 and a dustproof sealing ring 11 are respectively arranged in the grooves, and the oil liquid sealing ring 12 and the dustproof sealing ring 11 are sequentially arranged from inside to outside on the outer circumferences of the main shaft left side supporting sleeve 6 and the main shaft right side supporting sleeve 7, so that static sealing and supporting are realized between the main shaft left side supporting sleeve 6 and the main shaft right side supporting sleeve 7 and the outer shell 1 respectively.
The main shaft third shaft section 803 is located at the inner side of the main shaft left side supporting sleeve 6, the main shaft third shaft section 803 extends outwards to form a step shaft structure, and two axial sides of the main shaft third shaft section 803 of the step shaft structure are respectively provided with a first shaft shoulder 80301 and a second shaft shoulder 80302.
A wear-resistant support pad 13 is arranged between the position of the first shaft shoulder 80301 on the third shaft section 803 of the main shaft and the left support sleeve 6 of the main shaft.
The main shaft intermediate support sleeve 9 is located at a position between the position of the second shoulder 80302 on the outer circumference of the main shaft third shaft section 803 and the inner circumference of the outer casing 1, the outer circumference of the main shaft intermediate support sleeve 9 is fixedly connected with the inner circumference of the outer casing 1, the inner circumference of the main shaft intermediate support sleeve 9 is provided with a groove, an oil sealing ring 12 is arranged in the groove, and the inner circumference of the main shaft intermediate support sleeve 9 and the outer circumference of the main shaft third shaft section 803 are rotationally sealed through the oil sealing ring 12, so that the hydraulic oil in the oil cavity can be prevented from leaking outwards along a gap between the main shaft intermediate support sleeve 9 and the main shaft third shaft section 803.
A wear-resistant support pad 13 is provided between the spindle intermediate support sleeve 9 and the spindle third shaft section 803 at the location of the second shoulder 80302.
The main shaft left side support sleeve 6 and the main shaft middle support sleeve 9 respectively realize axial limiting rotary support to the main shaft third shaft section 803 through the wear-resisting support pads 13 positioned at the positions of the first shaft shoulder 80301 and the second shaft shoulder 80302, and realize axial positioning support to the main shaft 8, when the main shaft 8 rotates, under the support effect of the wear-resisting support pads 13 at the two sides, the condition of axial shaking when the main shaft 8 rotates can be avoided, and the stability of the integral operation of the swinging cylinder and the accuracy when the main shaft 8 swings are ensured.
The rotary piston 10 includes a rotary piston rotary support section 1001 and a rotary piston rotary seal section 1002, the rotary piston rotary support section 1001 being located at a left side position of the rotary piston 10, the rotary piston rotary seal section 1002 being located at a right side position of the rotary piston 10.
The outer circumference of the rotary piston rotary support section 1001 is in threaded engagement with the inner circumference of the outer housing 1, and the inner circumference of the rotary piston rotary support section 1001 is in threaded engagement with the outer circumference of the main shaft fourth shaft section 804.
The outer circumference of the rotary piston rotary seal section 1002 is provided with a groove, an oil liquid sealing ring 12 is arranged in the groove, and rotary seal is carried out between the outer circumference of the rotary piston rotary seal section 1002 and the inner circumference of the outer shell 1 through the oil liquid sealing ring 12.
The inner circumference of the rotary piston rotary seal section 1002 is provided with a groove, an oil liquid sealing ring 12 is arranged in the groove, and the inner circumference of the rotary piston rotary seal section 1002 and the outer circumference of the main shaft fourth shaft section 804 are rotationally sealed through the oil liquid sealing ring 12.
The rotary piston rotary seal 1002 divides the oil chamber 14 into a left oil chamber 1401 and a right oil chamber 1402, the left oil chamber 1401 communicates with the left oil hole 2, and the right oil chamber 1402 communicates with the right oil hole 3.
When oil enters the left oil cavity 1401 from the left oil cavity 1401 during operation of the swinging cylinder, the oil exerts right thrust on the rotary piston 10 under the action of pressure, the rotary piston 10 realizes right rotary translation under the meshing action of the rotary piston 10 and the outer shell 1, and meanwhile, the rotary piston 10 realizes forward rotation of the main shaft 8 under the meshing action of the rotary piston and the main shaft 8, and meanwhile, the main shaft 8 drives the mechanical arm to rotate forward, otherwise, when oil enters the right oil cavity 1402 from the right oil cavity 1402, the mechanical arm is finally driven to rotate left reversely.
According to the compact type swing hydraulic cylinder for the mechanical arm, the plurality of grooves are formed in the outer circumference of the main shaft, so that the machining is convenient and quick, the machining precision is high, and the problem that the difficulty in machining the grooves in the inner circumference of the outer shell is high due to the fact that the whole size of the swing cylinder is small is avoided;
And through placing dustproof sealing ring, fluid sealing washer, wear-resisting back up pad respectively in the recess, wherein, through dustproof sealing ring, fluid sealing washer, can effectively improve between shell body and the main shaft support cover, and the leakproofness between main shaft support cover and the main shaft, through wear-resisting back up pad, when can increasing the main shaft rotation, support wear resistance between main shaft and the main shaft support cover, guarantee simultaneously and rotate frictional smooth and easy degree between main shaft and the main shaft support cover, resistance when reducing the main shaft rotation reduces the operation noise, thereby realize the long-time steady operation of swinging cylinder, increase of service life.
However, the foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the utility model are intended to fall within the scope of the claims.
Claims (4)
1. The compact type swing hydraulic cylinder for the mechanical arm is characterized by comprising an outer shell, wherein a left oil hole and a right oil hole are formed in the outer shell, and a left fixed supporting sleeve and a right fixed supporting sleeve are respectively and fixedly arranged on two sides of the outer circumference of the outer shell;
The inside of the outer shell is provided with a main shaft, shaft sections on two sides of the main shaft are positioned outside the outer shell, a main shaft left side supporting sleeve and a main shaft right side supporting sleeve are respectively arranged between the shaft sections on two sides of the circumference of the outer shell on the main shaft and the inner circumference of the outer shell, the outer circumferences of the main shaft left side supporting sleeve and the main shaft right side supporting sleeve are respectively and fixedly connected with the inner circumference of the outer shell in a sealing way, and the inner circumferences of the main shaft left side supporting sleeve and the main shaft right side supporting sleeve are respectively and rotatably connected with the outer circumference of the main shaft in a sealing way;
A main shaft middle supporting sleeve is arranged in the outer shell between the main shaft left supporting sleeve and the main shaft right supporting sleeve, the outer circumference of the main shaft middle supporting sleeve is fixedly connected with the inner circumference of the outer shell, and the inner circumference of the main shaft middle supporting sleeve is rotationally and hermetically connected with the outer circumference of the main shaft;
The main shaft is axially limited and supported by the main shaft left side supporting sleeve and the main shaft middle supporting sleeve;
A rotary piston is arranged between the outer circumference of the main shaft and the inner circumference of the outer shell, the outer circumference and the inner circumference of one side of the rotary piston are respectively meshed with the inner circumference of the outer shell and the outer circumference of the main shaft, the outer circumference and the inner circumference of the other side of the rotary piston are respectively rotationally sealed on the inner circumference of the outer shell and the outer circumference of the main shaft, the rotary piston can realize axial rotary translation between the main shaft and the outer shell, and the rotary piston can drive the main shaft to rotate while axially rotating and translating;
And oil cavities are formed among the main shaft middle supporting sleeve, the main shaft and the main shaft right supporting sleeve, and the two sides of the oil cavity are respectively communicated with the left oil hole and the right oil hole.
2. The compact type swing hydraulic cylinder for the mechanical arm according to claim 1, wherein the main shaft is sequentially provided with a main shaft first shaft section, a main shaft second shaft section, a main shaft third shaft section, a main shaft fourth shaft section, a main shaft fifth shaft section and a main shaft sixth shaft section from left to right;
The first spindle section and the sixth spindle section are respectively positioned outside the outer shell, the second spindle section and the fifth spindle section are respectively positioned at two sides of the inner circumference of the outer shell, and the third spindle section and the fourth spindle section are respectively positioned at the middle position of the inner circumference of the outer shell;
The main shaft left side support sleeve is positioned between the main shaft second shaft section and the leftmost inner circumference of the outer shell, and the main shaft right side support sleeve is positioned between the main shaft fifth shaft section and the rightmost inner circumference of the outer shell;
The outer circles Zhou Jun of the second spindle shaft section and the fifth spindle shaft section are provided with a plurality of grooves, a wear-resistant supporting pad, an oil liquid sealing ring and a dustproof sealing ring are respectively arranged in the grooves, and the wear-resistant supporting pad, the oil liquid sealing ring and the dustproof sealing ring are sequentially arranged on the outer circumferences of the second spindle shaft section and the fifth spindle shaft section from inside to outside;
The outer circumferences of the left supporting sleeve and the right supporting sleeve of the main shaft are respectively provided with a plurality of grooves, an oil liquid sealing ring and a dustproof sealing ring are respectively arranged in the grooves, and the oil liquid sealing ring and the dustproof sealing ring are sequentially arranged from inside to outside;
The main shaft third shaft section is positioned at the inner side of the main shaft left side supporting sleeve, extends outwards to form a step shaft structure, and is respectively provided with a first shaft shoulder and a second shaft shoulder at two axial sides;
and a wear-resistant supporting pad is arranged between the position of the third shaft section of the main shaft, which is positioned on the first shaft shoulder, and the supporting sleeve on the left side of the main shaft.
3. The compact swing hydraulic cylinder for the mechanical arm according to claim 2, wherein the main shaft middle supporting sleeve is positioned between the second shoulder position on the outer circumference of the main shaft third shaft section and the inner circumference of the outer shell, the outer circumference of the main shaft middle supporting sleeve is fixedly connected with the inner circumference of the outer shell, the inner circumference of the main shaft middle supporting sleeve is provided with a groove, an oil sealing ring is arranged in the groove, and the inner circumference of the main shaft middle supporting sleeve is rotationally sealed with the outer circumference of the main shaft third shaft section through the oil sealing ring;
a wear-resistant supporting pad is arranged between the main shaft middle supporting sleeve and the position of the main shaft third shaft section, which is positioned on the second shaft shoulder;
The left side supporting sleeve and the middle supporting sleeve of the main shaft realize axial limiting and rotating support on the third shaft section of the main shaft through wear-resistant supporting pads positioned at the first shaft shoulder and the second shaft shoulder respectively.
4. The compact oscillating hydraulic cylinder for a mechanical arm of claim 3, wherein the rotary piston includes a rotary piston rotary support section and a rotary piston rotary seal section, the rotary piston rotary support section being positioned to the left of the rotary piston and the rotary piston rotary seal section being positioned to the right of the rotary piston;
The outer circumference of the rotary piston rotary support section is in threaded engagement with the inner circumference of the outer shell, and the inner circumference of the rotary piston rotary support section is in threaded engagement with the outer circumference of the fourth shaft section of the main shaft;
The outer circumference of the rotary piston rotary sealing section is provided with a groove, an oil liquid sealing ring is arranged in the groove, and rotary sealing is carried out between the outer circumference of the rotary piston rotary sealing section and the inner circumference of the outer shell through the oil liquid sealing ring;
The inner circumference of the rotary piston rotary sealing section is provided with a groove, an oil liquid sealing ring is arranged in the groove, and rotary sealing is carried out between the inner circumference of the rotary piston rotary sealing section and the outer circumference of the fourth shaft section of the main shaft through the oil liquid sealing ring;
The rotary piston rotary sealing section divides the oil cavity into a left oil cavity and a right oil cavity, the left oil cavity is communicated with the left oil hole, and the right oil cavity is communicated with the right oil hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422795706.3U CN223330878U (en) | 2024-11-15 | 2024-11-15 | Compact type swing hydraulic cylinder for mechanical arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422795706.3U CN223330878U (en) | 2024-11-15 | 2024-11-15 | Compact type swing hydraulic cylinder for mechanical arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223330878U true CN223330878U (en) | 2025-09-12 |
Family
ID=96983958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422795706.3U Active CN223330878U (en) | 2024-11-15 | 2024-11-15 | Compact type swing hydraulic cylinder for mechanical arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223330878U (en) |
-
2024
- 2024-11-15 CN CN202422795706.3U patent/CN223330878U/en active Active
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