CN214270026U - Telescopic adjusting mechanism for crane supporting leg - Google Patents
Telescopic adjusting mechanism for crane supporting leg Download PDFInfo
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- CN214270026U CN214270026U CN202120274660.4U CN202120274660U CN214270026U CN 214270026 U CN214270026 U CN 214270026U CN 202120274660 U CN202120274660 U CN 202120274660U CN 214270026 U CN214270026 U CN 214270026U
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- cushion block
- supporting leg
- upper side
- leg box
- bottom plate
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Abstract
A telescopic adjusting mechanism for crane supporting legs comprises a supporting leg box and movable supporting legs, wherein the supporting leg box is of a horizontal square tube structure, the movable supporting legs are positioned in the supporting leg box and are in sliding fit with the supporting leg box, a fixed cushion block is arranged at the front part of the upper side of a supporting leg box bottom plate, an auxiliary cushion block is arranged at the rear part of the upper side of the supporting leg box bottom plate, the thickness of the fixed cushion block is larger than that of the auxiliary cushion block, a first adjusting cushion block is arranged at the upper side of the supporting leg box bottom plate close to the front end, the movable supporting legs are of a horizontal square tube structure, a horizontal extending part is arranged at the rear end of an upper side plate of the movable supporting legs, a second adjusting cushion block and the first adjusting cushion block are arranged at the upper side of the horizontal extending part, the second adjusting cushion block comprises a main cushion block, two threaded holes are formed in the main cushion block, a plurality of superposed gaskets are arranged below the main cushion block, notches which are horizontally arranged forwards are formed in positions, corresponding to the threaded holes of the main cushion block, of the gaskets, and the main cushion block and the gaskets are fixed through fastening screws. The mechanism has the advantages of large span, simple structure, convenient use, low requirement on machining precision and good universality.
Description
Technical Field
The utility model relates to a flexible guiding mechanism of hoist landing leg.
Background
The existing small-tonnage landing leg telescopic mechanism mostly does not have an adaptation, does not have an adjustable clearance type structure scheme, and has the defects of increasing the requirement on the span along with the continuous lifting of the performance of the whole machine.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a flexible guiding mechanism of hoist landing leg is provided, its span is big, simple structure, convenient to use, and the machining precision requires lowly, and the commonality is good, is applicable to the mobile crane of various specifications.
In order to solve the technical problem, the utility model provides a telescopic adjusting mechanism for crane supporting legs, which comprises a supporting leg box and a movable supporting leg, wherein the supporting leg box is a horizontal square tube structure enclosed by a bottom plate, two side plates and a top plate, the movable supporting leg is positioned in the supporting leg box and is in sliding fit with the supporting leg box, one side which is open along the length direction of the supporting leg box is arranged as the front side and the other side as the back side, the front part of the upper side of the supporting leg box bottom plate is provided with a fixed cushion block, the rear part of the upper side of the supporting leg box bottom plate is provided with an auxiliary cushion block, the thickness of the fixed cushion block is larger than that of the auxiliary cushion block, a first adjusting cushion block is arranged at the position close to the front end of the upper side of the supporting leg box bottom plate, the movable supporting leg is a horizontal square tube structure enclosed by a lower side plate, a left side plate, a right side plate and an upper side plate, the rear end of the upper side plate of the movable supporting leg is provided with a horizontal extending part, a second adjusting cushion block, first adjustment cushion, second adjustment cushion structure the same, all include main cushion, be equipped with on the main cushion about two arrange and follow vertical screw hole to running through main cushion, main cushion below is equipped with the gasket of superpose about a plurality of, gasket shape and size and main cushion phase-match, gasket position on correspond main cushion screw hole department and all be equipped with the notch that the level was seted up forward, notch width and screw hole diameter phase-match, main cushion and a plurality of gasket are fixed through two fastening screw locks with the screw hole matching.
For the sake of simple explanation, the following is the telescopic adjusting mechanism of crane supporting leg of the present invention, which is simply referred to as this mechanism.
The principle and the using method of the mechanism are as follows: wherein the fixed cushion block is a fully-extended/semi-extended cushion block for hoisting, and the auxiliary cushion block is a fully-retracted support cushion block. The extension portion is arranged on the movable supporting leg to increase the sleeving length of the movable supporting leg under the full-extension working condition and improve the drooping condition of the movable supporting leg under the full-extension working condition. The adjusting cushion blocks play a role in preventing the movable supporting legs from being in friction contact with the supporting leg box under the full-extension/full-contraction working condition, and different numbers of cushion blocks are additionally arranged according to different matching degrees of each movable supporting leg and the supporting leg box so as to adjust the gap difference generated by the manufacturing error.
The advantages of the mechanism are that: the mechanism has the advantages of large span, simple structure, convenient use, low requirement on processing precision and good universality, and is suitable for automobile cranes of various specifications.
In order to achieve better use effect of the mechanism, the preferable scheme is as follows:
preferably, the horizontal extension part is a trapezoid structure with a wide front side and a narrow rear side.
Other structures are further arranged on the left side and the right side of the automobile crane corresponding to the rear end of the movable supporting leg, and the horizontal extension part is a trapezoidal structure with a wide front side and a narrow rear side and can play a role in abdicating to prevent interference.
Drawings
Fig. 1 is a sectional view of the present mechanism.
Fig. 2 is a front view of the movable leg of the mechanism.
Figure 3 is a top view of the movable leg of the present mechanism.
Fig. 4 is a schematic structural diagram of the movable leg of the mechanism in a fully contracted state.
Fig. 5 is a schematic structural diagram of the movable leg of the mechanism in a fully extended state.
Fig. 6 is a schematic structural diagram of the adjusting cushion block in the mechanism.
Detailed Description
Referring to fig. 1-6, a telescopic adjusting mechanism for crane supporting legs comprises a supporting leg box 1 and a movable supporting leg 2, wherein the supporting leg box 1 is a horizontal square tube structure enclosed by a bottom plate, two side plates and a top plate, the movable supporting leg 2 is positioned in the supporting leg box 1 and is in sliding fit with the supporting leg box 1, one side of the supporting leg box 1, which is open in the length direction, is front, and the other side of the supporting leg box is rear, a fixed cushion block 11 is arranged at the front part of the upper side of the bottom plate of the supporting leg box 1, an auxiliary cushion block 12 is arranged at the rear part of the upper side of the bottom plate of the supporting leg box 1, the thickness of the fixed cushion block 11 is larger than that of the auxiliary cushion block 12, a first adjusting cushion block 3 is arranged at the position, close to the front end, of the movable supporting leg 2 is a horizontal square tube structure enclosed by a lower side plate, a left side plate, a right side plate and an upper side plate, the rear end of the upper side plate of the movable supporting leg 2 is provided with a horizontal extending part 21, the horizontal extending part 21 is wide at the front side, A trapezoidal structure with narrow back side. The upside of horizontal extension portion 21 is equipped with second adjusting cushion block 4, first adjusting cushion block 3, second adjusting cushion block 4 the structure is the same, all include main cushion block 31, be equipped with two on the main cushion block 31 about arranging and along vertical screw hole 311 that runs through main cushion block 31, main cushion block 31 below is equipped with a plurality of from top to bottom superpose gasket 32 (only show a gasket 32 in this embodiment), gasket 32 shape and size and main cushion block 31 phase-match, gasket 32 position on correspond main cushion block 31 screw hole 311 department and all be equipped with the notch 321 that the level was seted up forward, notch 321 width and screw hole 311 diameter phase-match, main cushion block 31 and a plurality of gasket 32 are fixed through two fastening screw 33 cooperation spring pads 331 locking that match with screw hole 311.
The principle and the using method of the mechanism are as follows: wherein the fixed cushion block 11 is a fully-extended/semi-extended cushion block for hoisting, and the auxiliary cushion block 12 is a fully-retracted support cushion block. Extension 21 is put to movable leg 2 to increase the cup joint length of movable leg 2 under the full-extension operating mode, improve the lower sloughing condition of movable leg 2 under the full-extension operating mode. The adjusting cushion blocks play a role in preventing the movable supporting legs 2 from being in friction contact with the supporting leg box 1 under the full-extension/full-contraction working condition, and different numbers of cushion blocks are additionally arranged according to different matching degrees of each movable supporting leg 2 and the supporting leg box 1 so as to adjust the gap difference generated by the manufacturing error.
The advantages of the mechanism are that: the mechanism has the advantages of large span, simple structure, convenient use, low requirement on processing precision and good universality, and is suitable for automobile cranes of various specifications.
Other structures are arranged on the left side and the right side of the rear end of the automobile crane corresponding to the movable supporting leg 2, and the horizontal extension part 21 can play a role in yielding for a trapezoidal structure with a wide front side and a narrow rear side, so that interference is prevented.
Claims (2)
1. The utility model provides a flexible guiding mechanism of hoist landing leg, includes landing leg case and activity landing leg, its characterized in that: the supporting leg box is a horizontal square tube structure which is enclosed by a bottom plate, two side plates and a top plate, a movable supporting leg is positioned in the supporting leg box and is in sliding fit with the supporting leg box, the side which is open along the length direction of the supporting leg box is arranged as the front side and the other side as the back side, the front part of the upper side of the supporting leg box bottom plate is provided with a fixed cushion block, the rear part of the upper side of the supporting leg box bottom plate is provided with an auxiliary cushion block, the thickness of the fixed cushion block is larger than that of the auxiliary cushion block, the upper side of the supporting leg box bottom plate is provided with a first adjusting cushion block near the front end, the movable supporting leg is a horizontal square tube structure which is enclosed by a lower side plate, a left side plate, a right side plate and an upper side plate, the rear end of the upper side plate of the movable supporting leg is provided with a horizontal extending part, the upper side of the horizontal extending part is provided with a second adjusting cushion block, the first adjusting cushion block and the second cushion block are identical in structure and respectively comprise a main cushion block, two threaded holes which are arranged left and right and vertically penetrate through the main cushion block, the main cushion block is provided with a plurality of gaskets which are superposed up and down, the shape and the size of each gasket are matched with the main cushion block, the gasket is provided with notches which are horizontally arranged forwards and correspond to the threaded holes of the main cushion block, the width of each notch is matched with the diameter of each threaded hole, and the main cushion block and the plurality of gaskets are locked and fixed through two fastening screws matched with the threaded holes.
2. A crane leg telescoping adjustment mechanism as claimed in claim 1, wherein: the horizontal extension part is of a trapezoidal structure with a wide front side and a narrow back side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120274660.4U CN214270026U (en) | 2021-01-30 | 2021-01-30 | Telescopic adjusting mechanism for crane supporting leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120274660.4U CN214270026U (en) | 2021-01-30 | 2021-01-30 | Telescopic adjusting mechanism for crane supporting leg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214270026U true CN214270026U (en) | 2021-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120274660.4U Active CN214270026U (en) | 2021-01-30 | 2021-01-30 | Telescopic adjusting mechanism for crane supporting leg |
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| Country | Link |
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| CN (1) | CN214270026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117208791A (en) * | 2023-09-25 | 2023-12-12 | 河南骏通车辆有限公司 | Double-support leg structure and automobile crane |
-
2021
- 2021-01-30 CN CN202120274660.4U patent/CN214270026U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117208791A (en) * | 2023-09-25 | 2023-12-12 | 河南骏通车辆有限公司 | Double-support leg structure and automobile crane |
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