CN219367168U

CN219367168U - Length-adjustable supporting leg device

Info

Publication number: CN219367168U
Application number: CN202320239876.6U
Authority: CN
Inventors: 白哲豪; 姜锡祥; 彭程; 闫伟城; 林华
Original assignee: Construction Machinery Branch of XCMG
Current assignee: Construction Machinery Branch of XCMG
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-07-18
Anticipated expiration: 2033-02-17

Abstract

The utility model discloses a supporting leg device with adjustable length, which comprises a winch assembly and a supporting leg assembly which are correspondingly arranged, wherein the winch assembly and the supporting leg assembly are connected with an external mechanism through a mounting structure; the landing leg assembly comprises a fixed joint, an expansion joint and a landing leg joint which are sequentially arranged from outside to inside. The utility model provides a landing leg structure which is composed of a fixed joint and a plurality of telescopic joints, wherein the telescopic joints are lifted by manual hoisting to adjust the length of the landing leg, and the telescopic joints are connected with a bottom support through threads, so that the length of the landing leg can be finely adjusted to adapt to errors caused by assembly or ground.

Description

Length-adjustable supporting leg device

Technical Field

The utility model relates to the field of engineering machinery, in particular to a supporting leg device with adjustable length.

Background

One of the existing leg structures is fixed below the main body through a fixed pin shaft I and a chain pin shaft. When the support leg is used, the fixed pin shaft II and the chain pin shaft are detached, and the operation support leg rotates around the fixed pin shaft I to be unfolded downwards. And after the expansion, the second fixed pin shaft is installed back to the original position and penetrates through the radial holes of the supporting legs, so that the second fixed pin shaft is fixed in the vertical direction.

Such a leg structure has the following problems: 1. the operation of the supporting leg unfolding process is inconvenient; 2. the telescopic joint of the support leg is required to be manually carried beside or below the support leg, and danger is easy to be caused.

Disclosure of Invention

The utility model aims to: aiming at the defects and shortcomings of the prior art, the utility model provides a length-adjustable supporting leg device, which is a supporting leg structure formed by a fixed joint and a plurality of telescopic joints, wherein the telescopic joints are lifted by manual hoisting to adjust the length of the supporting leg, and the telescopic joints are connected with a bottom support through threads, so that the length of the supporting leg can be finely adjusted to adapt to errors caused by assembly or ground.

The technical scheme is as follows: the utility model relates to a length-adjustable supporting leg device, which is characterized in that: the device comprises a winch assembly and a supporting leg assembly which are correspondingly arranged, wherein the winch assembly and the supporting leg assembly are connected with an external mechanism through a mounting structure; the landing leg assembly comprises a fixed joint, an expansion joint and a landing leg joint which are sequentially arranged from outside to inside.

The fixed joint comprises a tube I with a hollow structure, wherein 1 group of radial holes are formed in the tube I, and 1 pair of ear plates I are arranged on the side part of the tube I;2 pairs of hole bodies are arranged between the ear plates I, and a tube II with a hollow structure is arranged between the corresponding hole bodies.

The telescopic joint comprises a tube III with a hollow structure, a circular plate I used for limiting is arranged at the position, close to the top end, of the tube III, and 2 groups of radial holes are formed in the tube III.

The landing leg joint comprises a tube V with a hollow structure, 3 groups of radial holes are formed in the tube V, a circular plate II is arranged at the top of the tube V, 1 pair of ear plates II are arranged on the circular plate II in parallel, corresponding hole bodies are formed in the ear plates II, and a tube IV with a hollow structure is arranged between the hole bodies; a circular plate III is arranged at the bottom of the pipe V and is connected with the supporting leg through a flange; the landing leg comprises a thread upper section, a middle section provided with a radial hole and a thread lower section, wherein the thread upper section of the landing leg is movably connected with the flange through corresponding threads, and the thread lower section of the landing leg is movably connected with the supporting leg plate through corresponding threads.

The winch assembly comprises a bent plate I, wherein the bent plate I comprises two vertical surfaces, 4 mounting holes are formed in a horizontal plane, 3 mounting holes are formed in a vertical plane, a rib plate is arranged between the horizontal plane and the vertical plane, and the bent plate I is connected with the manual winch through bolts penetrating through the corresponding mounting holes; the wire rope of manual hoist passes the hole body that pipe IV and otic placode II correspond.

The mounting structure comprises a plate positioned above the external mechanism, an ear plate III and an ear plate IV positioned below the external mechanism, 4 mounting holes corresponding to the horizontal plane of the bent plate I are formed in the plate, and the mounting structure is connected with the winding assembly through the plate and the bent plate I; and a bending plate II for structural reinforcement is arranged between the lug plate III and the lug plate IV.

The lug plate III and the lug plate IV are provided with 2 groups of corresponding mounting holes for mounting the support leg fixing pin shafts, and the support leg fixing pin shafts penetrate through the radial holes of the pipe V, the radial holes of the pipe III and the radial holes of the pipe I.

Wherein the external mechanism is a turntable.

The beneficial effects are that: compared with the prior art, the utility model has the following remarkable advantages: the utility model provides a landing leg structure which is composed of a fixed joint and a plurality of telescopic joints, wherein the telescopic joints are lifted by manual hoisting to adjust the length of the landing leg, and the telescopic joints are connected with a bottom support through threads, so that the length of the landing leg can be finely adjusted to adapt to errors caused by assembly or ground. Compared with the existing supporting leg structure, the novel supporting leg structure has the advantage of improving use convenience and safety. The concrete steps are as follows: 1. the extension, retraction and height adjustment of the supporting legs are more convenient and quicker; 2. the landing leg does not need to be directly operated, so that the safety is improved.

Drawings

FIG. 1 is a schematic diagram of a prior art leg structure;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a schematic view of a stationary joint according to the present utility model;

FIG. 4 is a schematic view of the telescopic joint of the present utility model;

FIG. 5 is a schematic view of the leg joint structure of the present utility model;

FIG. 6 is a schematic view of the structure of the winding assembly of the present utility model;

FIG. 7 is a schematic view of the mounting structure of the present utility model;

FIG. 8 is a state of use diagram I of the present utility model;

FIG. 9 is a state diagram II of the present utility model;

FIG. 10 is a view of the usage state III of the present utility model;

FIG. 1 is a winch assembly; 11 is a manual winch; 12 is a bending plate I;13 are rib plates; 2 is a mounting structure; 21 is a plate; 22 is ear plate III;23 is an ear plate IV;24 is a bending plate II;3 is a fixed knot; 31 is tube I;32 is tube II;33 is an ear plate I;4 is an expansion joint; 41 is a circular plate I;42 is tube III;5 is a leg joint; 51 is ear plate II;52 is tube IV;53 is a circular plate II;54 is tube V;55 is a supporting leg; 56 is a flange; 57 is a circular plate III;58 are the foot plates.

Detailed Description

The technical scheme of the utility model is further described below with reference to the accompanying drawings and the specific embodiments.

Referring to fig. 2, the utility model provides a leg device with adjustable length, which mainly comprises a mounting structure 2, a winch assembly 1 and a leg assembly. The total composition of the supporting leg is three sections, namely a fixed section 3, an expansion section 4 and a supporting leg section 5.

As shown in fig. 3, the fixed joint 3 is connected with an external mechanism turntable and is used for restraining the movement of the supporting leg 55, and is composed of a pipe I31, an ear plate I33 and a pipe II 32. Tube I31 and tube II32 are seamless tube cuts. The pipe I31 is provided with 1 group of radial holes for mounting the supporting leg fixing pin shafts, 1 pair of ear plates I33 are welded at the side upper positions of the pipe I31, and the ear plates I33 are provided with 2 pairs of holes for mounting the turntable connecting pin shafts. The 2 tubes II32 are welded between the 2 ear plates I33 and are coaxial with the upper and lower ear plate holes respectively for reinforcing the fixed joint 3.

As shown in fig. 4, the expansion joint 4 moves in the vertical direction under the constraint of the fixed joint 3, and is composed of a pipe III42 and a circular plate I41. Tube III42 is a seamless tube cut with 2 sets of radial holes for mounting leg fixing pins. The circular plate I41 is welded near the top end of the tube for limiting the maximum distance of downward movement of the expansion joint 4.

As shown in fig. 5, the leg joint 5 moves in the vertical direction under the constraint of the expansion joint 4, and is composed of a pipe V54, a circular plate II53, an ear plate II51, a pipe IV52, a circular plate III57, a flange 56, a leg 55, and a leg plate 58. Tube V54 is a seamless tube cut with 3 sets of radial holes for mounting leg fixing pins. The circular plate II53 is welded to the top end of the tube V54 to form a flat surface that facilitates welding of the ear plate II 51. 1 pair of lug plates II51 are welded on the top end of a pipe V54 in parallel, each lug plate II51 is provided with 1 hole, a pipe IV52 is welded in the middle of 2 lug plates II51 and coaxial with the lug plate holes, and the pipe IV is used for passing through a steel wire rope of the manual winch 11. The center of the circular plate III57 is provided with a large hole with the same inner diameter as the pipe V54, 6 threaded holes are uniformly distributed around the center, and the circular plate III57 is welded at the bottom of the pipe V54 and is used for connecting the flange 56. The flange 56 is provided with a large threaded hole in the center for connecting the supporting leg 55, and 6 mounting holes are uniformly distributed around the flange for being connected with the circular plate III57 through bolts. The leg 55 is divided into three sections, an upper section is threaded for mounting the flange 56, a middle section is provided with radial holes for convenient mounting, and a lower section is threaded for mounting the leg plate 58. The foot plate 58 is a circular plate with a threaded hole in the center, the threads are used to mount the foot plate 58 on the leg 55, and the position of the foot plate 58 can be finely adjusted to accurately set the height of the leg 55.

As shown in fig. 6, the winch assembly 1 is mounted on a turntable and used for controlling the extension and retraction of the supporting legs 55, and is composed of a bending plate I12, a rib plate 13 and a manual winch 11. The bending plate I12 is bent to form two vertical surfaces, and 4 mounting holes are formed in the horizontal plane and are used for being mounted on the mounting structure 2 through bolts. 4 mounting holes are formed in the vertical surface, 3 mounting holes are formed in the vertical surface of the bending plate I12, and the 3 holes on the mounting surface of the manual winch 11 correspond to the mounting holes and are mounted through bolts and nuts.

As shown in fig. 7, the mounting structure 2 is used for mounting the winch assembly 1 and the leg assembly, and is composed of a plate 21, an ear plate III22, an ear plate IV23 and a bending plate II 24. The plate 21 is welded horizontally above the turntable and provided with 4 threaded holes for mounting the winch assembly 1. The lug plate III22 and the lug plate IV23 are welded below the rotary table, 2 groups of mounting holes corresponding to the positions are formed in the lug plate III and the lug plate IV, the mounting holes are used for mounting the support leg fixing pin shafts, and the bending plate II24 is welded between the two lug plates.

Use state 1, as in fig. 8: the landing leg assembly is fixedly arranged by a pin shaft through a fixed joint 3 and a welding lug plate on the turntable, the manual winch 11 is arranged on the turntable plate through a bolt, and a steel wire rope of the manual winch passes through the lug plate hole and the pipe at the top of the landing leg joint 5 to control the extension and retraction of the straight landing leg 55. And lifting the leg joint 5 to the highest position, overlapping the lower hole of the leg joint and the lower hole of the telescopic joint with the fixed joint hole, and fixing the leg joint and the telescopic joint through a pin shaft.

Use state 2, as in fig. 9: the manual winch 11 is operated to lower the leg joint 5. The telescopic joint 4 is lowered to the lowest position, the upper hole coincides with the fixed joint hole, the middle hole of the leg joint coincides with the lower hole of the telescopic joint, and the two groups of holes are respectively fixed by pin shafts.

Use state 3, as in fig. 10: the manual winch 11 is operated to lower the leg joint 5. The telescopic joint 4 is lowered to the lowest position, the upper hole coincides with the fixed joint hole, the upper hole of the leg joint coincides with the lower hole of the telescopic joint, and the two groups of holes are respectively fixed by pin shafts.

The telescopic height of the support legs is changed through different combinations of the corresponding relations of the holes on the three sections of support legs, so that the telescopic height of the support legs is suitable for crawler cranes of different models. The supporting leg plate is in threaded connection with the supporting leg, so that the height of the supporting leg can be finely adjusted, and the problems caused by machining and installation errors and uneven working ground are reduced. The manual winch is used for changing the operation mode of the supporting legs, the supporting legs do not need to be directly operated, and safety is improved.

Claims

1. A leg arrangement of adjustable length, characterized in that: the device comprises a winch assembly (1) and a supporting leg assembly which are correspondingly arranged, wherein the winch assembly (1) and the supporting leg assembly are connected with an external mechanism through a mounting structure (2); the landing leg assembly comprises a fixed joint (3), an expansion joint (4) and a landing leg joint (5) which are sequentially arranged from outside to inside.

2. The adjustable length leg arrangement of claim 1, wherein: the fixed joint (3) comprises a tube I (31) with a hollow structure, 1 group of radial holes are formed in the tube I (31), and 1 pair of ear plates I (33) are arranged on the side part of the tube I (31); 2 pairs of hole bodies are arranged between the ear plates I (33), and a tube II (32) with a hollow structure is arranged between the corresponding hole bodies.

3. The adjustable length leg arrangement of claim 1, wherein: the telescopic joint (4) comprises a tube III (42) with a hollow structure, a circular plate I (41) used for limiting is arranged at the position, close to the top end, of the tube III (42), and 2 groups of radial holes are formed in the tube III (42).

4. The adjustable length leg arrangement of claim 1, wherein: the landing leg section (5) comprises a tube V (54) with a hollow structure, 3 groups of radial holes are formed in the tube V (54), a circular plate II (53) is arranged at the top of the tube V (54), 1 pair of ear plates II (51) are arranged on the circular plate II (53) in parallel, corresponding hole bodies are formed in the ear plates II (51), and a tube IV (52) with a hollow structure is arranged between the hole bodies; a circular plate III (57) is arranged at the bottom of the pipe V (54), and the circular plate III (57) is connected with the supporting leg (55) through a flange (56); the landing leg (55) comprises a threaded upper section, a middle section provided with a radial hole and a threaded lower section, the threaded upper section of the landing leg (55) is movably connected with the flange (56) through corresponding threads, and the threaded lower section of the landing leg (55) is movably connected with the supporting leg disc (58) through corresponding threads.

5. The adjustable length leg arrangement of claim 1, wherein: the winch assembly (1) comprises a bent plate I (12), wherein the bent plate I (12) comprises two vertical surfaces, 4 mounting holes are formed in a horizontal plane, 3 mounting holes are formed in a vertical plane, a rib plate (13) is arranged between the horizontal plane and the vertical plane, and the bent plate I (12) is connected with the manual winch (11) through bolts penetrating through the corresponding mounting holes; the steel wire rope of the manual winch (11) passes through the hole body corresponding to the lug plate II (51) of the pipe IV (52).

6. The adjustable length leg arrangement of claim 1, wherein: the mounting structure (2) comprises a plate (21) positioned above the external mechanism, an ear plate III (22) and an ear plate IV (23) positioned below the external mechanism, 4 mounting holes corresponding to the horizontal plane of the bent plate I (12) are formed in the plate (21), and the mounting structure (2) is connected with the bent plate I (12) through the plate (21) and the winch assembly (1); a bending plate II (24) for structural reinforcement is arranged between the lug plate III (22) and the lug plate IV (23).

7. The adjustable length leg arrangement of claim 6, wherein: the ear plate III (22) and the ear plate IV (23) are provided with 2 groups of corresponding mounting holes for mounting the support leg fixing pins, and the support leg fixing pins penetrate through the radial holes of the pipe V (54), the radial holes of the pipe III (42) and the radial holes of the pipe I (31).

8. The adjustable length leg arrangement of any one of claims 1-7, wherein: the external mechanism is a turntable.