CN220412734U - Retractable airplane jack - Google Patents
Retractable airplane jack Download PDFInfo
- Publication number
- CN220412734U CN220412734U CN202320529582.7U CN202320529582U CN220412734U CN 220412734 U CN220412734 U CN 220412734U CN 202320529582 U CN202320529582 U CN 202320529582U CN 220412734 U CN220412734 U CN 220412734U
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- retractable
- cylinder body
- tripod
- receive
- body support
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- 239000003381 stabilizer Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a retractable aircraft jack, which comprises two stages of piston type oil cylinders, an upper cylinder body support, a lower cylinder body support, a retractable tripod, a leveling supporting frame, a retractable sliding ring, a trapezoidal nut, a retractable screw and a retractable pull rod, wherein the upper end and the lower end of the two stages of piston type oil cylinders are respectively provided with the upper cylinder body support and the lower cylinder body support, the retractable sliding ring is sleeved at the middle position of the outer wall of the two stages of piston type oil cylinders, the retractable screw penetrates through the trapezoidal nut arranged at the outer side of the retractable sliding ring, the outer side of the upper cylinder body support is hinged with the upper end of the retractable tripod, the lower end of the retractable tripod is hinged with the leveling supporting frame, the retractable sliding ring is hinged with one end of the retractable pull rod, the other end of the retractable pull rod is hinged with the leveling supporting frame, and the leveling supporting frame is provided with leveling supporting legs. The retractable airplane jack solves the technical problems of poor retraction flexibility and large occupied space for transportation in the prior art.
Description
Technical Field
The utility model relates to the field of aircraft maintenance, in particular to a retractable aircraft jack.
Background
In the routine maintenance of an aircraft, the aircraft needs to be jacked up to overhaul the aircraft.
The existing aircraft jack with the old structure has enough strength and rigidity, is durable, and still has the following problems:
(1) The whole structure, the support frame occupation area is too big and difficult to split or receive and release, and is bulky, heavy, and parts such as hydraulic line, oil tank are rationally distributed, inconvenient maintenance.
(2) The loading and unloading are complicated, the transportation occupation space is large, the space waste is large during loading and transportation, and the transportation is inconvenient.
Disclosure of Invention
The utility model aims to provide a retractable airplane jack, which aims to solve the technical problems of poor retraction flexibility and large occupied space for transportation in the prior art.
The utility model provides a retractable aircraft jack which comprises two-stage piston type oil cylinders, an upper cylinder body support, a lower cylinder body support, a retractable tripod, a leveling tripod, leveling support legs, retractable slip rings, trapezoidal nuts, retractable screws and retractable pull rods.
Further, the two-stage piston type oil cylinder consists of an oil cylinder, a primary lifting rod, a secondary lifting rod and a telescopic ejector rod, wherein the primary lifting rod is arranged in the oil cylinder, the secondary lifting rod is arranged in the primary lifting rod, the telescopic ejector rod is arranged in the secondary lifting rod, and the oil cylinder and the primary lifting rod are movably connected with the primary lifting rod and the secondary lifting rod through lock nuts sleeved on the lock nuts; an upper cylinder body bracket, a lower cylinder body bracket and a retractable slip ring are sleeved on the outer wall of the oil cylinder; the bottom of the two-stage piston type oil cylinder is provided with a double-plunger reciprocating hand pump.
Further, the outside of last cylinder body support sets up evenly alternately and is provided with three prop up hinge seat and three trapezoidal screw, goes up the cylinder body support and articulates with the upper end of receive and release tripod through three prop up hinge seat, and the upper end of going up the cylinder body support still is provided with and keeps flat the support.
Further, the outer sides of the retractable sliding rings are uniformly and crosswise provided with three hinged supports and three trapezoidal nuts, the hinged supports and the trapezoidal nuts on the retractable sliding rings are oppositely arranged on the same vertical line with the hinged supports and the trapezoidal screw holes on the upper cylinder body bracket, and the retractable sliding rings are respectively hinged with one end of the inner side of the retractable pull rod through the three hinged supports; the retractable slip ring is movably connected with the oil cylinder in a clearance fit mode.
Further, the retractable screw rod is arranged at the upper end of the lower cylinder body support, the upper end of the retractable screw rod is connected through a trapezoid screw hole arranged on the upper cylinder body support fixed on the oil cylinder, and the retractable screw rod penetrates through a trapezoid nut on the retractable sliding ring movably connected to the oil cylinder.
Further, the inner side of the leveling tripod is movably connected with the lower end of the retractable tripod and one end of the outer side of the retractable pull rod through bolts respectively, and leveling support legs are arranged on the outer side of the leveling tripod.
Further, the side of the leveling tripod is provided with an adjustable pull rod, and the adjustable pull rod is movably connected with two adjacent leveling tripod.
Based on the technical scheme, the utility model can produce the following beneficial effects:
the triangular bracket provided by the utility model is rapid to retract and release, and the triangular bracket can be conveniently retracted and released for combination during transition. The hydraulic pipeline and the oil tank which are exposed outside are hidden at the lower part of the oil cylinder, so that the hydraulic pipeline and the oil tank are compact and attractive in overall structure, convenient to operate, free of loose parts, convenient to store and carry for transfer, capable of saving the occupied area for transfer, and particularly capable of meeting the combat training requirements of rapid maneuver and multiple machine guarantees of troops.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a first working state diagram of an embodiment of the present utility model;
FIG. 3 is a second working state diagram of the embodiment of the present utility model;
FIG. 4 is a top view of an embodiment of the present utility model;
in the figure: 1. double plunger reciprocating hand pump; 2. a lock nut; 3. two-stage piston type oil cylinder; 3-1, an oil cylinder; 3-2, a first-stage lifting rod; 3-3, a second-level lifting rod; 3-4, a telescopic ejector rod; 4. an upper cylinder support; 5. a lower cylinder support; 6. an adjustable tie rod; 7. folding and unfolding the tripod; 8. leveling the support; 9. leveling the support legs; 10. a slip ring is retracted; 11. a trapezoidal nut; 12. trapezoidal screw holes; 13. winding and unwinding a screw; 14. the pull rod is retracted and released.
Detailed Description
For a better understanding of the objects, structures and functions of the present utility model, a retractable jack for an aircraft will be described in further detail with reference to the accompanying drawings.
In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-4, the retractable aircraft jack of the utility model comprises a two-stage piston type oil cylinder 3, an upper cylinder body support 4, a lower cylinder body support 5, a retractable tripod 7, a leveling tripod 8, leveling support legs 9, retractable slip rings 10, trapezoidal nuts 11, retractable screws 13 and retractable pull rods 14, and is characterized in that the upper end and the lower end of the two-stage piston type oil cylinder 3 are respectively provided with the upper cylinder body support 4 and the lower cylinder body support 5, the retractable slip rings 10 are sleeved at the middle position between the upper cylinder body support 4 and the lower cylinder body support 5 on the outer wall of the two-stage piston type oil cylinder 3, a plurality of trapezoidal nuts 11 are arranged on the outer side of the retractable slip rings 10, a plurality of retractable screws 13 penetrate through the trapezoidal nuts 11, the outer side of the upper cylinder body support 4 is hinged with the upper end of the retractable tripod 7, the lower end of the retractable tripod 7 is hinged with the leveling tripod 8, the retractable slip rings 10 are hinged with one ends of the retractable pull rods 14, the other ends of the retractable pull rods 14 are hinged with the leveling tripod 8, and the leveling tripod 8 is provided with a plurality of support legs 9.
The two-stage piston type oil cylinder 3 consists of an oil cylinder 3-1, a primary lifting rod 3-2, a secondary lifting rod 3-3 and a telescopic ejector rod 3-4, wherein the primary lifting rod 3-2 is arranged in the oil cylinder 3-1, the secondary lifting rod 3-3 is arranged in the primary lifting rod 3-2, the telescopic ejector rod 3-4 is arranged in the secondary lifting rod 3-3, and the oil cylinder 3-1 and the primary lifting rod 3-2 are movably connected with the primary lifting rod 3-2 and the secondary lifting rod 3-3 through sleeved locking nuts 2; an upper cylinder body bracket 4, a lower cylinder body bracket 5 and a retractable slip ring 10 are sleeved on the outer wall of the oil cylinder 3-1; the bottom of the two-stage piston type oil cylinder 3 is provided with a double-plunger reciprocating hand pump 1.
The outside of the upper cylinder body support 4 is provided with three hinged supports and three trapezoidal screw holes 12 which are uniformly crossed, the upper cylinder body support 4 is hinged with the upper end of the retractable tripod 7 through the three hinged supports, and the upper end of the upper cylinder body support 4 is also provided with a flat support 18.
The outer side of the retractable sliding ring 10 is uniformly and crosswise provided with three hinged supports and three trapezoidal nuts 11, the hinged supports and the trapezoidal nuts 11 on the retractable sliding ring 10 are oppositely arranged on the same vertical line with the hinged supports and the trapezoidal screw holes 12 on the upper cylinder body bracket 4, and the retractable sliding ring 10 is respectively hinged with one end of the inner side of the retractable pull rod 14 through the three hinged supports; the retractable slip ring 10 is movably connected with the oil cylinder 3-1 in a clearance fit mode.
The retractable screw 13 is arranged at the upper end of the lower cylinder body bracket 5, the upper end of the retractable screw 13 is connected through a trapezoidal screw hole 12 arranged on the upper cylinder body bracket 4 fixed on the oil cylinder 3-1, and the retractable screw 13 penetrates through a trapezoidal nut 11 on the retractable slip ring 10 movably connected on the oil cylinder 3-1.
The inner side of the leveling tripod 8 is movably connected with the lower end of the retractable tripod 7 and one end of the outer side of the retractable pull rod 14 through bolts, and leveling support legs 9 are arranged on the outer side of the leveling tripod 8.
The side of the leveling tripod 8 is provided with an adjustable pull rod 6, and the adjustable pull rod 6 is movably connected with two adjacent leveling tripod 8.
Specifically, the lifting rods of the embodiment of the utility model adopt a hollow structure on the premise of allowing strength, so that the weight of the jack is reduced. When the jack is required to bear test load (20 t), the action cylinder can have enough strength and rigidity at each stroke position, so that the action cylinder and the hydraulic cylinder body are prevented from tilting and cracking, and the outer surface of the action cylinder is prevented from being obviously abraded and scratched during moving and working.
Specifically, the embodiment of the utility model realizes the retraction of three support legs by utilizing the up-and-down movement of the retraction slip ring on the outer surface of the cylinder body, and the diameter of the stable circle in the working state of the jack of the embodiment is as follows: phi 615 mm; the diameter of the stable circle after the support legs are retracted is about: Φ680 mm; the diameter of the stable circle under the working state of the wing jack is as follows: phi 1000 mm; the diameter of the stable circle after the support legs are retracted is about: Φ800 mm.
The specific operation method of the utility model comprises the following steps:
the retractable screw 13 is rotated, the retractable slip ring 10 slides up or down along the cylinder body of the oil cylinder 3-1, so that the retractable tripod 7 is driven to be retracted or released, the adjustable pull rod 6 is adjusted, and the stability of the retractable tripod 7 is ensured.
It will be understood that the utility model has been described with respect to certain embodiments and that various changes and equivalents may be made to those features and embodiments without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (3)
1. The utility model provides a receive and release formula aircraft jack, includes two-stage piston cylinder (3), goes up cylinder body support (4), lower cylinder body support (5), receive and release tripod (7), leveling tripod (8), leveling stabilizer blade (9), receive and release sliding ring (10), trapezoidal nut (11), receive and release screw rod (13) and receive and release pull rod (14), its characterized in that, the upper and lower both ends of two-stage piston cylinder (3) are provided with respectively last cylinder body support (4) and lower cylinder body support (5), receive and release sliding ring (10) cover is established the intermediate position between last cylinder body support (4) and lower cylinder body support (5) of two-stage piston cylinder (3) outer wall, receive and release sliding ring (10) outside be provided with a plurality of trapezoidal nuts (11), a plurality of in the trapezoidal nut (11) run through receive and release screw rod (13), the outside of going up cylinder body support (4) is articulated with receive and release tripod (7) upper end, receive and release tripod (7) lower extreme and leveling tripod (8) are articulated, receive and release sliding ring (10) are carried out with a plurality of leveling tripod (8) and receive and release pull rod (14), receive and release tripod (8) are articulated; three hinged supports and three trapezoid screw holes (12) are uniformly and crosswise arranged on the outer side of the upper cylinder body support (4), the upper cylinder body support (4) is hinged with the upper end of the retractable tripod (7) through the three hinged supports, and the upper end of the upper cylinder body support (4) is also provided with a flat support; three support hinge seats and three trapezoidal nuts (11) are uniformly and crosswise arranged on the outer side of the retractable sliding ring (10), the support hinge seats and the trapezoidal nuts (11) on the retractable sliding ring (10) are oppositely arranged on the same vertical line with the support hinge seats and the trapezoidal screw holes (12) on the upper cylinder body bracket (4), and the retractable sliding ring (10) is hinged with one end of the inner side of the retractable pull rod (14) through the three support hinge seats respectively; the retractable slip ring (10) is movably connected with the oil cylinder (3-1) in a clearance fit manner; the retractable screw (13) is arranged at the upper end of the lower cylinder body bracket (5), the upper end of the retractable screw (13) is connected through a trapezoid screw hole (12) arranged on the upper cylinder body bracket (4) fixed on the oil cylinder (3-1), and the retractable screw (13) penetrates through a trapezoid nut (11) on a retractable sliding ring (10) movably connected on the oil cylinder (3-1); the inner side of the leveling tripod (8) is movably connected with the lower end of the retractable tripod (7) and one end of the outer side of the retractable pull rod (14) through bolts, and leveling support legs (9) are arranged on the outer side of the leveling tripod (8).
2. The retractable aircraft jack according to claim 1, wherein the two-stage piston type oil cylinder (3) consists of an oil cylinder (3-1), a primary lifting rod (3-2), a secondary lifting rod (3-3) and a telescopic ejector rod (3-4), the primary lifting rod (3-2) is arranged in the oil cylinder (3-1), the secondary lifting rod (3-3) is arranged in the primary lifting rod (3-2), the telescopic ejector rod (3-4) is arranged in the secondary lifting rod (3-3), and the oil cylinder (3-1) and the primary lifting rod (3-2) are movably connected with each other through a sleeved locking nut (2) between the primary lifting rod (3-2) and the secondary lifting rod (3-3); an upper cylinder body bracket (4), a lower cylinder body bracket (5) and a retractable slip ring (10) are sleeved on the outer wall of the oil cylinder (3-1); the bottom of the two-stage piston type oil cylinder (3) is provided with a double-plunger reciprocating hand pump (1).
3. The retractable aircraft jack according to claim 1, wherein an adjustable pull rod (6) is arranged on the side edge of the leveling tripod (8), and the adjustable pull rod (6) is movably connected with two adjacent leveling tripod (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320529582.7U CN220412734U (en) | 2023-03-17 | 2023-03-17 | Retractable airplane jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320529582.7U CN220412734U (en) | 2023-03-17 | 2023-03-17 | Retractable airplane jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220412734U true CN220412734U (en) | 2024-01-30 |
Family
ID=89648973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320529582.7U Active CN220412734U (en) | 2023-03-17 | 2023-03-17 | Retractable airplane jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220412734U (en) |
-
2023
- 2023-03-17 CN CN202320529582.7U patent/CN220412734U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |