CN217864063U - Automatic locking device of vehicle-mounted crane transport vehicle supporting leg and vehicle-mounted crane transport vehicle - Google Patents

Abstract

The utility model discloses an automatic locking means of lorry-mounted jack-up transport vechicle landing leg, including installing the lock fender at flexible landing leg tip to and install the base on the automobile body, rotate on the base and install the latch hook that keeps off looks adaptation with the lock, rotate on the latch hook and install and keep off the ring. When the vehicle driving process, the lock hook is kept in a locking state all the time under the action of self gravity, when the telescopic supporting legs are retracted, the locking action is ensured to be automatically completed when the supporting legs are retracted through the action of the guide plate of the lock gear, potential safety hazards are avoided, driving safety is ensured, and meanwhile, the locking device is simple and reliable in structure, economical and practical.

Description

Automatic locking device of vehicle-mounted crane transport vehicle supporting leg and vehicle-mounted crane transport vehicle

Technical Field

The utility model belongs to vehicle-mounted jack-up transport vechicle field, concretely relates to automatic locking means of vehicle-mounted jack-up transport vechicle landing leg and vehicle-mounted jack-up transport vechicle.

Background

In construction machines, locking devices have a wide range of applications. For example, when the truck with the truck crane works, the supporting legs need to be unfolded to ensure the bearing capacity and the anti-tilting capacity of the whole truck, but the supporting legs need to be retracted in the driving process to ensure the trafficability of the truck with the truck crane. In order to prevent the leg from being inadvertently swung open or extended in the retracted state, the swing leg or the telescopic leg is locked by a leg locking device.

For example, CN202144245U discloses a leg locking device, which includes a housing, a lock cylinder and a control portion, wherein the lock cylinder is disposed in the housing, a reset element for automatically resetting the lock cylinder is disposed between the lock cylinder and the housing, a locking surface contacting with the control portion is disposed on the housing, the control portion is provided with a cam portion cooperating with the locking surface to control the lock cylinder to switch between a locking state and an unlocking state, and one end of the lock cylinder penetrates through the housing and is hinged to the cam portion. The opening of the leg lock is switched to the closing of the leg lock, and the leg lock needs to be manually closed by an operator, if the operator forgets to close the leg lock after the legs are taken up, the legs can slide outwards under the action of inertia force during the running of the vehicle and exceed the width of the vehicle, and great potential safety hazards exist.

Disclosure of Invention

In order to solve the technical problem, the inventor reachs through practice and summary the utility model discloses a technical scheme, the utility model discloses an automatic locking means of lorry jack-up transport vechicle landing leg, including installing the lock fender at flexible landing leg tip to and install the base on the automobile body, rotate on the base and install the latch hook with lock fender looks adaptation, rotate on the latch hook and install the fender ring.

In the above scheme, an improvement is made in that the bottom of one end side of the lock hook close to the lock catch is provided with a guide slope surface and a hooking area arranged on the bottom side of one end. Through the direction domatic, do benefit to when telescopic leg retrieves, the balance of latch hook is destroyed, carries out the rotation that makes progress, and the hook joint region does benefit to and keeps off realization adaptation effect with the lock.

In the scheme, the improvement is that the end part of the lock catch is provided with a guide inclined plane and is vertically provided with a hollow area, and a lock bolt is arranged in the hollow area. The direction inclined plane does benefit to when horizontal landing leg retrieves, keeps off the ring and can rotate along it, prevents to appear the jamming phenomenon, realizes the adaptation through the hooking region through action of gravity and set bar, and then realizes that flexible landing leg is in stable balanced state.

In the above scheme, the improvement is that a guide plate is arranged on one side of the lock bolt close to the lock hook, and an included angle between the guide plate and the horizontal plane is smaller than an included angle between the guide slope surface and the horizontal plane. The guide slope surface is jacked up through the guide plate, so that the lock hook rotates upwards, and the clamping stagnation phenomenon cannot occur.

In the scheme, the improvement is that the bottom of one side of the base is provided with a limiting seat for limiting the rotating angle of the lock hook to one side of the lock catch. The lock hook is limited by the limiting seat in the downward rotating angle under the action of gravity, and the included angle between the lock hook and the horizontal plane is larger than 5-10 degrees.

In the scheme, the improvement is made that the lock hook is rotatably installed on the base through a pin shaft and an adjusting gasket.

The vehicle-mounted hoisting transport vehicle comprises the automatic locking device for the supporting legs of the vehicle-mounted hoisting transport vehicle.

Compared with the prior art, the utility model discloses can obtain following technological effect:

1. compared with the prior art, the technical scheme of the utility model, the automatic locking means of lorry jack-up transport vechicle landing leg, including lock shelves, latch hook, fender ring, base, round pin axle and adjusting washer. When the vehicle goes the in-process, the latch hook remains the locking state all the time under self action of gravity, when flexible landing leg retrieves, through the deflector effect of lock shelves, ensures that the locking action is automatic to be accomplished when receiving a leg, stops the potential safety hazard, ensures driving safety, and locking device simple structure is reliable simultaneously, economical and practical.

2. Compared with the prior art, the technical scheme of the utility model, the automatic locking device of the lorry-mounted crane carrier leg, the locking action of the lock hook is automatically completed without manual control, and the potential safety hazard brought to the vehicle by human factors is eliminated;

3. compared with the prior art, the technical scheme of the utility model, the automatic locking means of vehicle-mounted jack-up transport vechicle landing leg, the locking action make full use of latch hook the inherent attribute of part self need not to increase unnecessary complementary unit, therefore the locking means structure is simple relatively, economical and practical.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of the overall structure of the present invention;

fig. 2 is a top view of the overall structure of the present invention;

FIG. 3 shows the overall structure of the present invention when the telescopic legs are extended;

fig. 4 shows the overall structure of the present invention when the telescopic leg is retracted to the end position;

fig. 5 is a state diagram of the overall structure of the present invention when it is unlocked.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The application of the principles of the present invention will be further described with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1 to 5, the automatic locking device for the landing leg of the lorry-mounted crane comprises a lock catch 1 mounted at the end of a telescopic landing leg (which is a conventional mounting part and is not shown), and a base 4 mounted on a vehicle body (which is a conventional mounting part and is not shown).

Rotating on the base 4 and installing latch hook 2 with lock fender 1 looks adaptation, rotating on the latch hook 2 and installing fender ring 3, latch hook 2 is close to the one end side bottom that lock fender 1 and is provided with the domatic 22 of direction to and set up in the hookup region 21 of one end bottom side, one side bottom of base 4 is provided with the spacing seat 41 of restriction latch hook 2 to lock fender 1 one side rotation angle.

The end of the lock catch 1 is provided with a guide inclined plane 13 and is vertically provided with a hollow area, a lock bolt 11 is arranged in the hollow area, one side of the lock bolt 11 close to the lock hook 2 is provided with a guide plate 12, and the included angle between the guide plate 12 and the horizontal plane is smaller than the included angle between the guide slope 22 and the horizontal plane.

When the telescopic supporting leg needs to extend outwards, the locking hook 2 is screwed upwards, the blocking ring 3 rotates towards one side of the hooking area 21, the hooking area 21 is separated from the lock bolt 11, then the blocking ring 3 is lapped at the top of the right end of the lock catch 1, at the moment, the locking state of the telescopic supporting leg is relieved, when the telescopic supporting leg is retracted inwards, the locking hook 2 and the blocking ring 3 are in a balanced state under the combined action of gravity and a limiting seat 41, when the telescopic supporting leg is retracted, the lock catch 1 moves inwards, the guide slope 22 is acted through the guide plate 12, the guide slope 22 is caused to ascend, when the lock bolt 11 reaches the hooking area 21, the hooking area 21 and the lock bolt 11 are matched to realize locking, in the process that the guide slope 22 is acted through the guide plate 12 to the hooking area 21 and the lock bolt 11, the blocking ring 3 can rotate towards one side of the rotating joint of the locking hook 2 along the guide slope 13, and finally is attached to the guide slope 13.

Example 2

As shown in fig. 1 to 5, on the basis of the above-mentioned embodiment, a modification is made such that the latch hook 2 is rotatably mounted on the base 4 through a pin 5 and an adjusting shim 6.

The lorry-mounted crane transport vehicle comprises the automatic locking device for the support leg of the lorry-mounted crane transport vehicle in any one of the embodiments.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (7)

1. Automatic locking means of vehicle-mounted jack-up transport vechicle landing leg, its characterized in that is including installing lock fender (1) at flexible landing leg tip to and install base (4) on the automobile body, rotate on base (4) and install latch hook (2) with lock fender (1) looks adaptation, rotate on latch hook (2) and install fender ring (3).

2. The truck-mounted crane support leg automatic locking device according to claim 1, characterized in that the bottom of one end side of the locking hook (2) close to the locking stop (1) is provided with a guiding slope surface (22) and a hooking area (21) arranged at the bottom of one end.

3. The automatic locking device for the support legs of the lorry-mounted crane carrier as claimed in claim 2, characterized in that the end of the lock catch (1) is provided with a guide slope (13) and is vertically provided with a hollow area, and a lock bolt (11) is arranged in the hollow area.

4. The automatic locking device for the landing leg of the lorry-mounted crane carrier according to claim 3, characterized in that a guide plate (12) is arranged on one side of the lock bolt (11) close to the lock hook (2), and the included angle between the guide plate (12) and the horizontal plane is smaller than the included angle between the guide slope surface and the horizontal plane.

5. The automatic locking device for the support leg of the lorry-mounted crane carrier according to claim 4, characterized in that a limiting seat (41) for limiting the rotation angle of the lock hook (2) to one side of the lock catch (1) is arranged at the bottom of one side of the base (4).

6. The truck-mounted crane support leg automatic locking device according to claim 5, characterized in that the locking hook (2) is rotatably mounted on the base (4) through a pin (5) and an adjusting shim (6).

7. Truck with lift, characterized in that it comprises an automatic locking device of the truck legs according to any of claims 1 to 6.

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