CN212532098U - Landing leg lockpin with self-locking function - Google Patents
Landing leg lockpin with self-locking function Download PDFInfo
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- CN212532098U CN212532098U CN202021142913.4U CN202021142913U CN212532098U CN 212532098 U CN212532098 U CN 212532098U CN 202021142913 U CN202021142913 U CN 202021142913U CN 212532098 U CN212532098 U CN 212532098U
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- locking
- plate
- landing leg
- pin
- movable spring
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Abstract
The utility model discloses a landing leg lockpin with self-locking function, which belongs to the field of crane landing leg boxes, and comprises a locking pin fixedly arranged on a movable landing leg and a locking device fixedly arranged on the landing leg box, wherein the locking device comprises a mounting plate fixedly arranged on the landing leg box and a locking plate rotationally connected with the mounting plate through a rotating shaft, the locking plate is connected with the mounting plate through a movable spring, and a supporting plate which can be supported on the locking pin is arranged on the locking plate; when the lock is unlocked, only the locking plate hand-pulling handle needs to be pulled upwards, the supporting legs can freely extend out, and after the supporting legs extend out, the supporting plate rotates anticlockwise under the action of gravity, droops and supports on the braking pin, and the locking plate is stopped to reset under the action of the tension force of the movable spring; when the supporting legs are retracted, the brake pin touches the front end of the locking plate to enable the locking plate to move upwards, and when the brake pin moves to the locking hook, the locking plate completes self-locking under the action of the tension force of the movable spring.
Description
Technical Field
The utility model relates to a hoist landing leg case field, concretely relates to landing leg lockpin with self-locking function.
Background
The base of the crane is generally provided with a movable support leg. When the crane works, the supporting legs are opened and supported on the ground, so that the stability of the crane can be improved. In order to ensure the stability of the leg when the leg is opened, a leg lock pin with a self-locking function is required to be provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, have self-locking function's landing leg lockpin.
The technical scheme of the utility model is that: a landing leg lock pin with a self-locking function comprises a brake pin fixedly mounted on a movable landing leg and a locking device fixedly mounted on a landing leg box, wherein the locking device comprises a mounting plate fixedly mounted on the landing leg box and a locking plate rotatably connected with the mounting plate through a rotating shaft; the locking plate is arranged above the locking hook in front and is provided with a support plate connected in a rotating mode, when the locking hook rotates anticlockwise relative to the mounting plate, the support plate rotates anticlockwise relative to the locking hook under the action of gravity, and the support plate is vertically supported on the braking pin through a circular arc below the support plate.
Further technical scheme is equipped with the gasket between activity spring and the installation axle.
According to a further technical scheme, one end, close to the brake pin, of the locking plate forms a hand-pulling handle extending upwards.
The utility model has the advantages that:
the utility model has simple structure, when unlocking, only the locking plate hand-shifting handle needs to be shifted upwards, the locking plate rotates anticlockwise relative to the mounting plate, the movable spring is tensioned, the supporting leg can freely extend out, the supporting plate rotates anticlockwise under the action of gravity to droop and is supported on the braking pin after the supporting leg extends out, and the locking plate is stopped to reset under the action of the tensioning force of the movable spring; when the supporting legs are retracted, the brake pin touches the front end of the locking plate to enable the locking plate to move upwards, and when the brake pin moves to the locking hook, the locking plate completes self-locking under the action of the tension force of the movable spring.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the present invention when the supporting legs are extended.
The locking device comprises a movable supporting leg 1, a movable supporting leg 2, a brake pin 3, a supporting leg box 4, a locking device 41, a mounting plate 42, a locking plate 43, a locking limiting groove 44, a movable spring 45, a locking hook 46, a supporting plate 47, a hand lever 48 and a gasket.
Detailed Description
The invention will be further elucidated below by means of non-limiting examples, with the understanding that the invention is not limited thereto.
As shown in fig. 1-2, the present invention relates to a landing leg lock pin with self-locking function, including a brake pin 2 fixedly mounted on a movable landing leg 1 and a locking device 4 fixedly mounted on a landing leg box 3, where the locking device 4 includes a mounting plate 41 fixedly mounted on the landing leg box 3, and a locking plate 42 rotatably connected to the mounting plate 41 via a rotating shaft, a locking limit groove 43 for a movable spring 44 to pass through is disposed at an edge position of the locking plate 42 corresponding to the mounting plate 41, the other end of the locking plate 42 extends toward the brake pin 2 and forms a locking hook 45 matched with the brake pin 2, one end of the movable spring 44 is fixed above the locking hook 45, the other end of the movable spring 44 anticlockwise rotates around the rotating shaft and passes through the locking limit groove 43 and then is fixed on the mounting plate 41, and a gasket 48 is disposed between the movable spring 44 and the;
the locking plate 42 is provided with a support plate 46 which is rotatably connected at a front upper position of the locking hook 45, when the locking hook 45 rotates anticlockwise relative to the mounting plate 41, the support plate 46 rotates anticlockwise relative to the locking hook 45 under the action of gravity and is vertically supported on the brake pin 2 through a circular arc below the support plate 46, and one end of the locking plate 42 close to the brake pin 2 is provided with a hand lever 47 which extends upwards.
When the lock is unlocked, only the hand-operated handle 47 of the locking plate 42 needs to be pulled upwards, the locking plate 42 rotates anticlockwise relative to the mounting plate 41, the movable spring 44 is tensioned, the supporting leg can freely extend out, the supporting plate 46 after the supporting leg extends out rotates anticlockwise under the action of gravity and droops to be supported on the brake pin 2, and the locking plate 42 is stopped to reset under the action of the tensioning force of the movable spring 44; when the supporting legs are retracted, the brake pin 2 touches the front end of the locking plate 42, so that the locking plate 42 moves upwards, and when the brake pin 2 moves to the locking hook 45, the locking plate 42 completes self-locking under the tension of the movable spring 44.
To sum up, the utility model discloses simple structure is fit for using widely.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a landing leg lockpin with self-locking function which characterized in that: the locking device comprises a mounting plate fixedly mounted on the leg box and a locking plate rotatably connected with the mounting plate through a rotating shaft, a locking limiting groove for a movable spring to pass through is formed in the edge position of the locking plate corresponding to the mounting plate, the other end of the locking plate extends towards the brake pin and forms a locking hook matched with the brake pin, one end of the movable spring is fixed above the locking hook, and the other end of the movable spring anticlockwise surrounds the rotating shaft and passes through the locking limiting groove to be fixed on the mounting plate; the locking plate is located the preceding upper position of locking hook and is equipped with the backup pad of rotation connection, when the locking hook is for mounting panel anticlockwise rotation, the backup pad is for the locking hook anticlockwise rotation under the action of gravity to circular arc vertical support in the arresting pin through the backup pad below.
2. The leg lock pin with the self-locking function as claimed in claim 1, wherein: and a gasket is arranged between the movable spring and the mounting shaft.
3. The leg lock pin with the self-locking function as claimed in claim 1, wherein: one end of the locking plate close to the brake pin forms a hand-pulling handle extending upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021142913.4U CN212532098U (en) | 2020-06-19 | 2020-06-19 | Landing leg lockpin with self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021142913.4U CN212532098U (en) | 2020-06-19 | 2020-06-19 | Landing leg lockpin with self-locking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212532098U true CN212532098U (en) | 2021-02-12 |
Family
ID=74548908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021142913.4U Active CN212532098U (en) | 2020-06-19 | 2020-06-19 | Landing leg lockpin with self-locking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212532098U (en) |
-
2020
- 2020-06-19 CN CN202021142913.4U patent/CN212532098U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |