CN220684526U

CN220684526U - Tripod jack

Info

Publication number: CN220684526U
Application number: CN202322399043.9U
Authority: CN
Inventors: 叶明伟
Original assignee: Shanghai Mingwei Aviation Technology Co ltd
Current assignee: Shanghai Mingwei Aviation Technology Co ltd
Priority date: 2023-09-05
Filing date: 2023-09-05
Publication date: 2024-03-29
Anticipated expiration: 2033-09-05

Abstract

The utility model discloses a tripod jack, which comprises a hydraulic cylinder and casters, wherein the upper part of a cylinder body of the hydraulic cylinder is uniformly hinged with three diagonal braces along the circumference, the lower end of each diagonal brace is provided with a supporting disc, the lower end of the cylinder body of the hydraulic cylinder is fixedly provided with a flange plate, the flange plate is uniformly and fixedly provided with three connecting plates along the circumference, the outer ends of the connecting plates are fixedly connected with the lower ends of the diagonal braces one by one, each connecting plate is respectively and correspondingly provided with a support, the supports are hinged with a vertical supporting leg, the casters are arranged at the lower ends of the supporting legs, the outside of the cylinder body of the hydraulic cylinder is connected with a sleeve in a sliding manner, the outer sides of the sleeve are uniformly hinged with three connecting rods along the circumference, the other ends of the three connecting rods are hinged with the supporting legs one by one, the sleeve is connected with the flange plate, the spring exerts upward thrust on the sleeve, the outer sides of the cylinder body of the hydraulic cylinder are in a screwed connection manner, the upper ends of the sleeve are propped against the retaining ring, and the jack does not need to independently switch supporting modes each time, and is very convenient to use.

Description

Tripod jack

Technical Field

The utility model relates to the technical field of jacks, in particular to a tripod jack.

Background

With the rapid development of the international aviation industry, modern novel fighters are continuously emerging, and the fighters are placed at a preferred position for maintenance and personal safety of the fighters, so that the fighters play a vital role in improving industry reputation, reducing economic benefit and saving a great amount of funds and intangible cost of China. Because of the reasons of the aircraft body type, large-scale hoisting equipment such as a crane cannot be used, the jack with smaller body type can carry out the task of supporting the aircraft, the jack for supporting the aircraft is a tripod supporting structure, the bottom is provided with casters for moving and walking, the casters are required to be switched into a supporting disc to be contacted with the ground during supporting due to limited bearing capacity of the casters, the casters are lifted off the ground, at present, a screw rod mechanism is adopted to adjust lifting of the casters (for example, chinese patent with publication number of CN 218434685U), a plurality of casters are required to be respectively adjusted, and the time spent in lifting adjustment is more, so that the use is not very convenient.

Disclosure of Invention

The utility model aims to provide a tripod jack for solving the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a tripod jack, includes pneumatic cylinder and truckle, and the cylinder body upper portion of pneumatic cylinder has three diagonal brace along the even articulated of circumference, and the supporting disk is installed to the lower extreme of every diagonal brace, the cylinder body lower extreme fixed mounting of pneumatic cylinder has the ring flange, and the ring flange has three connecting plate along the even fixed mounting of circumference, the outer end one-to-one and the lower extreme fixed connection of diagonal brace of connecting plate, every the connecting plate corresponds respectively installs a support, the support articulates there is a vertical landing leg, the truckle is installed in the lower extreme of landing leg, the cylinder body outer sliding connection of pneumatic cylinder has the sleeve, and the outside of sleeve has three connecting rod along the even articulated of circumference, and three the other end one-to-one of connecting rod is articulated with the landing leg, sleeve and ring flange are connected with the spring, and the spring is exerted decurrent pulling force to the sleeve.

Preferably, U-shaped brackets are welded at the two ends of the connecting rod, lugs are welded at the outer sides of the sleeves, and penetrating round holes are formed in the brackets and the lugs.

Preferably, a retaining ring is screwed on the outer side of the cylinder body of the hydraulic cylinder and used for limiting the sleeve, and at least one rod-shaped handle is welded on the outer side of the retaining ring along the radial direction.

Compared with the prior art, the utility model has the beneficial effects that: when this jack was used for supporting the aircraft, because the increase of load can lead to the truckle inwards to overturn and reduce the height and make supporting disk and ground contact, after the pneumatic cylinder release load, the spring downwardly pulled sleeve, the connecting rod promotes the truckle to open again and ground contact, uses at every turn and does not need the independent operation to switch supporting state, uses very convenient.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a partial enlarged view of fig. 1.

In the figure: 1. a hydraulic cylinder; 2. a diagonal brace; 3. a connecting plate; 4. a support plate; 5. a flange plate; 6. a connecting rod; 7. a spring; 8. a sleeve; 9. a retainer ring; 10. casters; 11. a support; 12. and (5) supporting legs.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-2, the present utility model provides a technical solution: the utility model provides a tripod jack, includes pneumatic cylinder 1 and truckle 10, and the even articulated three diagonal brace 2 that have of circumference in cylinder body upper portion of pneumatic cylinder 1, and diagonal brace increases the stability of this jack, and supporting disk 4 is installed to the lower extreme of every diagonal brace 2, and the cylinder body lower extreme fixed mounting of pneumatic cylinder 1 has flange 5, and flange 5 has three connecting plates 3 along the even fixed mounting of circumference, the outer end one-to-one of connecting plate 3 and the lower extreme fixed connection of diagonal brace 2.

Each connecting plate 3 is correspondingly provided with a support 11, the support 11 is hinged with a vertical supporting leg 12, the castor 10 is arranged at the lower end of the supporting leg 12, and the cylinder body of the hydraulic cylinder 1 is externally connected with a sleeve 8 in a sliding manner. The outside of sleeve 8 has three connecting rod 6 along the even articulated of circumference, the welding of the both ends of connecting rod 6 has the support of U-shaped, the outside welding journal stirrup of sleeve 8 all is equipped with the round hole that runs through on support and the journal stirrup, the other end one-to-one of three connecting rod 6 articulates with landing leg 12, can drive three truckle 10 and inwards overturn in step and realize the shrink when sleeve 8 upwards moves, sleeve 8 is connected with spring 7 with ring flange 5, spring 7 applys decurrent pulling force to sleeve 8, spring 7 maintains the open state of truckle 10 (the downside of truckle is less than the supporting disk), conveniently remove this jack. The outside spiro union of the cylinder body of pneumatic cylinder 1 has retaining ring 9, and at least one rod-shaped handle of radial welding is followed in the outside of retaining ring 9, walks on the uneven ground of fluctuation, and truckle 10 receives the impact force great, probably can lead to the inward upset shrink of truckle 10 for supporting disk 4 knocks into the ground, spacing the spacing of sleeve 8 through retaining ring 9, in order to lock the open state of truckle 10.

Working principle: when the jack supports an airplane, the caster 10 can be turned inwards to reduce the height due to the increase of the load, so that the supporting disc 4 is in contact with the ground, after the hydraulic cylinder 1 releases the load, the spring 7 downwards pulls the sleeve 8, and the connecting rod 6 pushes the caster 10 to be opened again to be in contact with the ground, so that the jack is convenient to use.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a tripod jack, includes pneumatic cylinder (1) and truckle (10), and the cylinder body upper portion of pneumatic cylinder (1) is along the even articulated three diagonal brace (2) of circumference, and supporting disk (4) are installed to the lower extreme of every diagonal brace (2), cylinder body lower extreme fixed mounting of pneumatic cylinder (1) has ring flange (5), and ring flange (5) are along the even fixed mounting of circumference three connecting plate (3), the outer end one-to-one of connecting plate (3) and the lower extreme fixed connection of diagonal brace (2), its characterized in that: every connecting plate (3) corresponds respectively installs a support (11), support (11) articulates there is a vertical landing leg (12), truckle (10) are installed in the lower extreme of landing leg (12), sliding connection has sleeve (8) outside the cylinder body of pneumatic cylinder (1), and the outside of sleeve (8) is followed the even articulated three connecting rod (6) of circumference, and is three the other end one-to-one of connecting rod (6) articulates with landing leg (12), sleeve (8) are connected with spring (7) with ring flange (5), and spring (7) apply decurrent pulling force to sleeve (8).

2. A tripod jack as claimed in claim 1, wherein: the U-shaped brackets are welded at the two ends of the connecting rod (6), lugs are welded at the outer sides of the sleeves (8), and penetrating round holes are formed in the brackets and the lugs.

3. A tripod jack as claimed in claim 1, wherein: the cylinder body outside spiro union of pneumatic cylinder (1) has retaining ring (9), and retaining ring (9) are used for spacing sleeve (8), the outside of retaining ring (9) is along radial welding at least one shaft-like handle.