CN216642649U - Locking oil cylinder suitable for landing leg leveling - Google Patents
Locking oil cylinder suitable for landing leg leveling Download PDFInfo
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- CN216642649U CN216642649U CN202122857091.9U CN202122857091U CN216642649U CN 216642649 U CN216642649 U CN 216642649U CN 202122857091 U CN202122857091 U CN 202122857091U CN 216642649 U CN216642649 U CN 216642649U
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- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000003921 oil Substances 0.000 claims description 138
- 210000004907 gland Anatomy 0.000 claims description 7
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The utility model discloses a locking oil cylinder suitable for leveling a supporting leg. The locking oil cylinder suitable for leveling the supporting leg comprises an outer sleeve, a cylinder barrel and a piston rod, wherein the outer sleeve, the cylinder barrel and the piston rod are sequentially sleeved from outside to inside, the cylinder barrel makes telescopic motion, a locking assembly used for locking the cylinder barrel is arranged on the piston rod, the locking assembly comprises a locking sleeve sleeved on the piston rod, an unlocking oil port is arranged on the locking sleeve, and the unlocking oil port is connected with an external oil source through an oil way; the piston rod is provided with two pistons, the locking sleeve is located between the two pistons, the locking sleeve and the cylinder barrel are in interference fit, the two pistons are provided with sealing rings, and the sealing rings ensure safe sealing of unlocking pressure oil of the locking sleeve. The utility model is suitable for a large-tonnage landing leg leveling and locking oil cylinder, unlocking pressure oil flows into a locking sleeve to be pressurized so as to expand and unlock a cylinder barrel, the cylinder barrel extends out, the locking sleeve releases pressure, an inner hole of the cylinder barrel retracts, an outer circle of the locking sleeve and the inner hole of the cylinder barrel are locked, interference fit is generated, and the purpose of locking is achieved.
Description
Technical Field
The utility model relates to the technical field of oil cylinders, in particular to a locking oil cylinder suitable for leveling supporting legs.
Background
During use, various self-propelled engineering machines such as large cranes, cement conveyors, high-altitude emergency vehicles, special field test vehicles and the like, and weapon equipment such as missile launching vehicles, radar vehicles, infrared tracking vehicles and the like of various types need to be provided with a stably supported rigid horizontal working platform, and support elements for realizing the platforms are supporting leg leveling cylinders.
The existing supporting leg leveling oil cylinder is hydraulically locked, and the locking state needs to be maintained through pressure maintaining of the hydraulic lock. The supporting leg leveling oil cylinder needs a sealing element to maintain the locking state in a sealing mode, if the sealing element leaks, the oil cylinder cannot be locked, and the reliability is low.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: overcomes the defects in the prior art and provides a locking oil cylinder suitable for leveling supporting legs.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a locking oil cylinder suitable for leveling a supporting leg comprises an outer sleeve, a cylinder barrel and a piston rod, wherein the outer sleeve, the cylinder barrel and the piston rod are sequentially sleeved from outside to inside, the cylinder barrel makes telescopic motion, a locking assembly used for locking the cylinder barrel is arranged on the piston rod, the locking assembly comprises a locking sleeve sleeved on the piston rod, an unlocking oil port is arranged on the locking sleeve, and the unlocking oil port is connected with an external oil source through an oil way; the piston rod is provided with two pistons, the locking sleeve is positioned between the two pistons, the locking sleeve and the cylinder barrel are in interference fit, and the two pistons are provided with sealing rings which ensure the safe sealing of unlocking pressure oil of the locking sleeve; the oil enters the unlocking oil port, hydraulic oil enters between the locking sleeve and the cylinder barrel, and the cylinder barrel is expanded to be in an unlocking state; the unlocking oil port releases pressure, the cylinder barrel retracts, the locking sleeve and the cylinder barrel are locked, and the cylinder barrel is in a locking state.
Furthermore, an upper spiral groove, an annular groove and a lower spiral groove are formed in the outer wall of the locking sleeve, and the upper spiral groove and the lower spiral groove are respectively located on the upper side and the lower side of the annular groove; the unlocking oil port comprises an upper oil port, an intermediate oil port and a lower oil port, the upper oil port is communicated with the upper spiral groove, the intermediate oil port is communicated with the annular groove, and the lower oil port is communicated with the lower spiral groove.
Furthermore, a first oil way and a fourth oil way are arranged in the piston rod, the first oil way is respectively communicated with the upper oil port and the lower oil port, and the fourth oil way is communicated with the middle oil port.
Furthermore, a cylinder end cover is arranged at the bottom end of the cylinder, a guide sleeve is arranged at the top end of the cylinder, and the guide sleeve is sleeved on the piston rod.
Furthermore, a ball head part is arranged on the outer side of the cylinder end cover and connected with a ball head cover plate; the cylinder end cover inboard is equipped with branch, and the through-hole has been seted up to the piston rod, and the through-hole is interior to receive branch when the cylinder withdrawal state, installs the guidance tape on the through-hole, and the guidance tape is used for branch to stretch out the time direction, and the guidance tape is located the bottom of through-hole.
Furthermore, the ball head cover plate is provided with a spherical groove, and the ball head part is clamped in the spherical groove; the ball head part is sleeved with the ball head gland, and the ball head gland is connected with the ball head cover plate and used for pressing the ball head part to prevent the ball head part from slipping.
Furthermore, a sleeve end cover is arranged at the top end of the outer sleeve, and the top end of the piston rod is connected with the sleeve end cover; the outer wall of the outer sleeve is provided with a flange, and a rib plate is arranged at the joint of the outer sleeve and the flange.
Furthermore, the piston divides the inner cavity of the cylinder barrel into a rod cavity and a rodless cavity, and the rod cavity is positioned above the rodless cavity; the piston rod is provided with a second oil way and a third oil way, the second oil way is communicated with the rodless cavity, and the third oil way is communicated with the rod cavity.
Furthermore, the upper piston is provided with a piston oil port, and the third oil path is communicated with the rod cavity through the piston oil port.
Furthermore, the piston rod is provided with a limiting bump for limiting the upper piston, the bottom end of the piston rod is provided with a locking nut, and the locking nut is in threaded connection with the bottom end of the piston rod to connect the piston rod, the upper piston, the lower piston and the locking sleeve into a whole.
The utility model has the beneficial effects that: the utility model has simple structure and simple and convenient operation, and has the following advantages:
(1) the locking device is suitable for a large-tonnage supporting leg leveling and locking oil cylinder, unlocking pressure oil flows into the locking sleeve to be pressurized to enable the cylinder barrel to expand and unlock, the cylinder barrel extends out, the locking sleeve releases pressure, the inner hole of the cylinder barrel retracts, the outer circle of the locking sleeve and the inner hole of the cylinder barrel are locked to generate interference fit, and the locking purpose is achieved;
(2) the ball head part of the cylinder end cover is rotationally connected with the ball head cover plate, the ball head part can adjust the angle between the cylinder end cover and the ball head cover plate, the cylinder falls on the ground after extending out, and the stability of the cylinder can be improved due to the arrangement of the ball head part if the ground is uneven or inclined;
(3) the utility model has the advantages of large locking force, reliable locking, lower cost, low cost of using the supporting leg leveling and locking oil cylinder, high reliability, cost saving and capability of meeting various requirements of the supporting leg leveling and locking oil cylinder.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the initial state structure of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is a schematic view of the construction of the locking sleeve;
FIG. 6 is a schematic structural diagram of the working state of the present invention;
fig. 7 is a sectional view taken along line C-C in fig. 6.
In the figure: 1. the hydraulic cylinder comprises a guide belt, 2 parts of a guide sleeve, 3 parts of a cylinder, 4 parts of a cylinder end cover, 5 parts of a ball head cover plate, 6 parts of an annular groove, 7 parts of a sleeve end cover, 8 parts of a flange, 9 parts of a rib plate, 10 parts of an outer sleeve, 11 parts of an upper spiral groove, 12 parts of a support rod, 13 parts of a piston, 14 parts of a piston rod, 15 parts of a locking nut, 16 parts of a locking sleeve, 17 parts of a lower spiral groove, 18 parts of a ball head gland, 19 parts of a first oil way, 20 parts of a second oil way, 21 parts of a third oil way and 22 parts of a fourth oil way.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The locking oil cylinder suitable for leveling the supporting legs comprises an outer sleeve 10, a cylinder barrel 3 and a piston rod 14 which are sequentially sleeved from outside to inside, wherein the cylinder barrel 3 makes telescopic motion, a locking assembly used for locking the cylinder barrel 3 is arranged on the piston rod 14, the locking assembly comprises a locking sleeve 16 sleeved on the piston rod 14, and an unlocking oil port is arranged on the locking sleeve 16 and is connected with an external oil source through an oil way; two pistons 13 are arranged on a piston rod 14, a locking sleeve 16 is positioned between the two pistons 13, the locking sleeve 16 and the cylinder barrel 3 are in interference fit, and sealing rings are arranged on the two pistons 13 and ensure the safe sealing of unlocking pressure oil of the locking sleeve 16; the oil enters the unlocking oil port, the hydraulic oil enters the space between the locking sleeve 16 and the cylinder barrel 3, and the cylinder barrel 3 expands to be in an unlocking state; the unlocking oil port releases pressure, the cylinder barrel 3 retracts, the locking sleeve 16 and the cylinder barrel 3 are locked, and the cylinder barrel 3 is in a locking state.
The outer wall of the locking sleeve 16 is provided with an upper spiral groove 11, an annular groove 6 and a lower spiral groove 17, and the upper spiral groove 11 and the lower spiral groove 17 are respectively positioned at the upper side and the lower side of the annular groove 6; the unlocking oil port comprises an upper oil port, an intermediate oil port and a lower oil port, the upper oil port is communicated with the upper spiral groove 11, the intermediate oil port is communicated with the annular groove 6, and the lower oil port is communicated with the lower spiral groove 17.
A first oil path 19 and a fourth oil path 22 are arranged in the piston rod 14, the first oil path 19 is respectively communicated with the upper oil port and the lower oil port, and the fourth oil path 22 is communicated with the middle oil port.
The bottom end of the cylinder barrel 3 is provided with a cylinder barrel end cover 4, the top end of the cylinder barrel 3 is provided with a guide sleeve 2, and the guide sleeve 2 is sleeved on the piston rod 14.
The outer side of the cylinder end cover 4 is provided with a bulb part which is connected with a bulb cover plate 5; the inner side of the cylinder end cover 4 is provided with a support rod 12, the piston rod 14 is provided with a through hole, the support rod 12 is accommodated in the through hole when the cylinder 3 is in a retraction state, the through hole is provided with a guide belt 1, the guide belt 1 is used for guiding when the support rod 12 extends out, and the guide belt 1 is positioned at the bottom of the through hole. The struts 12 ensure that the cylinder 3 and the outer sleeve 10 are arranged coaxially. The bulb portion of cylinder end cover 4 rotates with bulb apron 5 to be connected, and the angle between cylinder end cover 4 and the bulb apron 5 can be adjusted to the bulb portion, and cylinder 3 stretches out the back, falls to ground, if the ground is uneven or slope, the stability of cylinder 3 can be improved in the setting of bulb portion.
The ball head cover plate 5 is provided with a spherical groove, and the ball head part is clamped in the spherical groove; the ball head part is sleeved with a ball head gland 18, and the ball head gland 18 is connected with the ball head cover plate 5 and used for pressing the ball head part to prevent the ball head part from slipping.
The top end of the outer sleeve 10 is provided with a sleeve end cover 7, and the top end of the piston rod 14 is connected with the sleeve end cover 7; the outer wall of the outer sleeve 10 is provided with a flange 8, and a rib plate 9 is arranged at the joint of the outer sleeve 10 and the flange 8.
The piston 13 divides the inner cavity of the cylinder barrel 3 into a rod cavity and a rodless cavity, and the rod cavity is positioned above the rodless cavity; the piston rod 14 is provided with a second oil way 20 and a third oil way 21, the second oil way 20 is communicated with the rodless cavity, and the third oil way 21 is communicated with the rod cavity; the upper piston 13 is provided with a piston oil port, and the third oil path 21 is communicated with the rod chamber through the piston oil port.
The piston rod 14 is provided with a limiting bump for limiting the upper piston 13, the bottom end of the piston rod 14 is provided with a locking nut 15, and the locking nut 15 is in threaded connection with the bottom end of the piston rod 14 to connect the piston rod 14, the upper piston 13, the lower piston 13 and the locking sleeve 16 into a whole.
And an oil passage oil port which is respectively communicated with the first oil passage 19, the second oil passage 20, the third oil passage 21 and the fourth oil passage 22 is formed in the sleeve end cover 7.
The working process of the locking oil cylinder suitable for leveling the supporting leg is as follows:
(1) as shown in fig. 1 to 4, in an initial state, the cylinder 3 retracts, hydraulic oil is not fed into the first oil path 19 and the fourth oil path 22, and the locking sleeve 16 is in interference fit with the cylinder 3;
(2) the unlocking pressure oil enters from an oil inlet corresponding to the sleeve end cover 7 and is transmitted through the first oil way 19 and the fourth oil way, the unlocking pressure oil enters the upper spiral groove 11, the annular groove 6 and the lower spiral groove 17 from an upper oil port, an intermediate oil port and a lower oil port of the locking sleeve 16 respectively, the unlocking pressure oil is injected at high pressure, so that the cylinder barrel 3 is pressed to expand outwards, the interference fit between the cylinder barrel 3 and the locking sleeve 16 is changed into clearance fit, the locking sleeve 16 locks and releases the cylinder barrel 3, and a sealing ring on the piston 13 ensures the safe sealing of the unlocking pressure oil of the locking sleeve 16;
(3) when the cylinder is in an unlocking state, hydraulic oil enters from an oil inlet corresponding to the sleeve end cover 7 and enters the rodless cavity through the second oil path 20, so that the cylinder end cover 4 is pushed to move downwards, and the cylinder 3 is driven to extend out;
(4) when the cylinder barrel 3 extends to the target height, pressure is relieved through the upper oil port, the middle oil port and the lower oil port, the inner hole of the cylinder barrel 3 retracts, the locking sleeve 16 and the cylinder barrel 3 are locked, locking force not less than 25t is generated, and the cylinder barrel 3 is locked, as shown in fig. 6-7;
(5) when the cylinder barrel 3 needs to retract, the oil inlet is respectively arranged on the oil inlet, the oil inlet is respectively arranged on the middle oil inlet and the lower oil inlet, the locking sleeve 16 locks and releases the cylinder barrel 3, hydraulic oil enters from the oil inlet corresponding to the sleeve end cover 7 and enters the rod cavity through the third oil path 21, the guide sleeve 2 is pushed to move upwards, and the cylinder barrel 3 is driven to retract.
The locking oil cylinder suitable for leveling the supporting legs is simple in structure and easy and convenient to operate, and has the following advantages:
(1) the hydraulic cylinder is suitable for leveling and locking the large-tonnage supporting leg, unlocking pressure oil flows into the locking sleeve 16 to be pressurized so that the cylinder barrel 3 expands and unlocks, the cylinder barrel 3 extends out, the locking sleeve 16 releases pressure, the inner hole of the cylinder barrel 3 retracts, the outer circle of the locking sleeve 16 and the inner hole of the cylinder barrel 3 are locked, interference fit is generated, and the locking purpose is achieved;
(2) the ball head part of the cylinder end cover 4 is rotationally connected with the ball head cover plate 5, the ball head part can adjust the angle between the cylinder end cover 4 and the ball head cover plate 5, the cylinder 3 falls on the ground after extending out, and the stability of the cylinder 3 can be improved due to the arrangement of the ball head part if the ground is uneven or inclined;
(3) the utility model has the advantages of large locking force, reliable locking, lower cost, low cost of using the supporting leg leveling and locking oil cylinder, high reliability and cost saving, and can meet various requirements of the supporting leg leveling and locking oil cylinder.
While particular embodiments of the present invention have been described in the foregoing specification, the present invention is not limited to the specific embodiments, and modifications and variations of the foregoing detailed description can be made by those skilled in the art without departing from the spirit and scope of the utility model.
Claims (10)
1. The utility model provides a locking hydro-cylinder suitable for landing leg leveling, includes outer sleeve (10), cylinder (3) and piston rod (14) that outside-in overlaps in proper order and establishes, and concertina movement, its characterized in that are made in cylinder (3): the piston rod (14) is provided with a locking assembly for locking the cylinder barrel (3), the locking assembly comprises a locking sleeve (16) sleeved on the piston rod (14), the locking sleeve (16) is provided with an unlocking oil port, and the unlocking oil port is connected with an external oil source through an oil way; two pistons (13) are arranged on the piston rod (14), the locking sleeve (16) is located between the two pistons (13), the locking sleeve (16) and the cylinder barrel (3) are in interference fit, and sealing rings are arranged on the two pistons (13) and ensure safe sealing of unlocking pressure oil of the locking sleeve (16); the oil is fed into the unlocking oil port, hydraulic oil enters between the locking sleeve (16) and the cylinder barrel (3), and the cylinder barrel (3) expands to be in an unlocking state; the unlocking oil port releases pressure, the cylinder barrel (3) retracts, the locking sleeve (16) and the cylinder barrel (3) are locked, and the cylinder barrel (3) is in a locking state.
2. The locking cylinder suitable for leveling the supporting leg of claim 1, wherein: the outer wall of the locking sleeve (16) is provided with an upper spiral groove (11), an annular groove (6) and a lower spiral groove (17), and the upper spiral groove (11) and the lower spiral groove (17) are respectively positioned on the upper side and the lower side of the annular groove (6); the unlocking oil port comprises an upper oil port, an intermediate oil port and a lower oil port, the upper oil port is communicated with the upper spiral groove (11), the intermediate oil port is communicated with the annular groove (6), and the lower oil port is communicated with the lower spiral groove (17).
3. The locking cylinder suitable for leveling the supporting leg as claimed in claim 2, wherein: a first oil way (19) and a fourth oil way (22) are arranged in the piston rod (14), the first oil way (19) is respectively communicated with the upper oil port and the lower oil port, and the fourth oil way (22) is communicated with the middle oil port.
4. The locking cylinder suitable for leveling the supporting leg of claim 1, wherein: the cylinder end cover (4) is arranged at the bottom end of the cylinder barrel (3), the guide sleeve (2) is arranged at the top end of the cylinder barrel (3), and the piston rod (14) is sleeved with the guide sleeve (2).
5. The locking cylinder suitable for leveling the supporting leg as claimed in claim 4, wherein: the outer side of the cylinder end cover (4) is provided with a ball head part, and the ball head part is connected with a ball head cover plate (5); the cylinder end cover (4) inboard is equipped with branch (12), and the through-hole has been seted up in piston rod (14), and branch (12) are held in the through-hole when cylinder (3) retraction state, install guidance tape (1) on the through-hole, and guidance tape (1) are used for branch (12) to stretch out the time direction, and guidance tape (1) are located the bottom of through-hole.
6. The locking cylinder suitable for leveling the supporting leg as claimed in claim 5, wherein: the ball head cover plate (5) is provided with a spherical groove, and the ball head part is clamped in the spherical groove; the ball head part is sleeved with a ball head gland (18), and the ball head gland (18) is connected with the ball head cover plate (5) and used for pressing the ball head part to prevent the ball head part from slipping.
7. The locking cylinder suitable for leveling the supporting leg of claim 1, wherein: the top end of the outer sleeve (10) is provided with a sleeve end cover (7), and the top end of the piston rod (14) is connected with the sleeve end cover (7); the outer wall of the outer sleeve (10) is provided with a flange (8), and a rib plate (9) is arranged at the joint of the outer sleeve (10) and the flange (8).
8. The locking cylinder suitable for leveling the supporting leg of claim 1, wherein: the piston (13) divides the inner cavity of the cylinder barrel (3) into a rod cavity and a rodless cavity, and the rod cavity is positioned above the rodless cavity; and the piston rod (14) is provided with a second oil way (20) and a third oil way (21), the second oil way (20) is communicated with the rodless cavity, and the third oil way (21) is communicated with the rod cavity.
9. The locking cylinder suitable for leveling the supporting leg of claim 8, wherein: the piston (13) is provided with a piston oil port, and the third oil way (21) is communicated with the rod cavity through the piston oil port.
10. The locking cylinder suitable for leveling the supporting leg as claimed in claim 1, wherein: the piston rod (14) is provided with a limiting bump for limiting the upper piston (13), the bottom end of the piston rod (14) is provided with a locking nut (15), and the locking nut (15) is in threaded connection with the bottom end of the piston rod (14) to connect the piston rod (14), the upper piston (13), the lower piston (13) and the locking sleeve (16) into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122857091.9U CN216642649U (en) | 2021-11-19 | 2021-11-19 | Locking oil cylinder suitable for landing leg leveling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122857091.9U CN216642649U (en) | 2021-11-19 | 2021-11-19 | Locking oil cylinder suitable for landing leg leveling |
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| Publication Number | Publication Date |
|---|---|
| CN216642649U true CN216642649U (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122857091.9U Active CN216642649U (en) | 2021-11-19 | 2021-11-19 | Locking oil cylinder suitable for landing leg leveling |
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| Country | Link |
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| CN (1) | CN216642649U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115744707A (en) * | 2022-08-04 | 2023-03-07 | 中国电子科技集团公司第十四研究所 | Heavy-load large-stroke lifting leveling device and method |
-
2021
- 2021-11-19 CN CN202122857091.9U patent/CN216642649U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115744707A (en) * | 2022-08-04 | 2023-03-07 | 中国电子科技集团公司第十四研究所 | Heavy-load large-stroke lifting leveling device and method |
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