CN212639772U

CN212639772U - Lateral safety structure of crane

Info

Publication number: CN212639772U
Application number: CN201922229898.0U
Authority: CN
Inventors: 张一帆; 刘中天
Original assignee: Shaoguan Liput Construction Machinery Co ltd
Current assignee: Shaoguan Liput Construction Machinery Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2021-03-02
Anticipated expiration: 2029-12-13

Abstract

The utility model relates to the technical field of crane equipment, and discloses a lateral safety structure of a crane, which comprises a lateral telescopic supporting leg, a box body and a telescopic leg nested and connected in the box body; the frame is fixedly connected with the box body; the lock catch is arranged between the telescopic leg and the frame/box body and used for locking the telescopic leg and the frame, and the lock catch is provided with a locking position for connecting the telescopic leg and the frame into a whole and an unlocking position for separating the telescopic leg and the frame from each other; the lock catch comprises a fixing piece and a hook, the hook is rotatably connected to the fixing piece, and the hook rotates around the fixing piece to move from the locking position to the unlocking position. The utility model discloses with can carrying out safe locking to the flexible landing leg of side direction of hoist, avoid the flexible landing leg of hoist side direction to stretch out the emergence accident at the in-process of traveling.

Description

Lateral safety structure of crane

Technical Field

The utility model relates to a hoist equipment technical field especially relates to a hoist side direction safety structure.

Background

When the crane lifts, the stability of the crane is very important for medium and large tonnage lorry-mounted cranes, and the stability of the crane is improved by arranging the supporting legs in the prior art. The telescopic supporting legs of the existing crane are large in span, so that the telescopic supporting legs of the existing crane are designed to be double-telescopic supporting legs, namely, two oil cylinders are connected in series, and due to space limitation of the telescopic supporting legs and a hydraulic system, a special locking device is not installed in an oil circuit of the existing horizontal telescopic oil cylinder, and the oil cylinders are locked by a lower vehicle control valve. Because the valve core function of the get-off control valve is different, the effect of locking the horizontal telescopic oil cylinder of the get-off control valve is general, the horizontal telescopic oil cylinder of the lorry-mounted crane can automatically stretch out one section, the telescopic supporting legs stretch out under the driving of the horizontal telescopic oil cylinder, and the width of the whole lorry-mounted crane can exceed 2.5 meters and even be larger after the telescopic supporting legs stretch out, so that accidents can possibly occur in the running process of the whole lorry no matter under the parking condition, and the safety hazard is great.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hoist side direction safety structure can improve the security of the flexible landing leg of side direction.

In order to achieve the above object, the utility model provides a hoist side direction safety structure, include:

the lateral telescopic supporting legs comprise a box body and telescopic legs which are connected in the box body in an embedded mode, and the telescopic legs are provided with a contraction position which is retracted into the box body along a straight line and an expansion position which extends out of the box body;

the frame is fixedly connected with the box body;

the lock catch is arranged between the telescopic leg and the frame/box body and used for locking the telescopic leg and the frame/box body, and the lock catch is provided with a locking position for connecting the telescopic leg and the frame/box body into a whole and an unlocking position for separating the telescopic leg and the frame/box body from each other.

Preferably, the lock catch comprises a fixing piece and a hook, the hook is rotatably connected to the fixing piece, and the hook rotates around the fixing piece to move from the locking position to the unlocking position.

Preferably, the hook further comprises a locking piece, the hook is provided with an inclined surface, a sliding surface is formed on the part, corresponding to the inclined surface, of the locking piece, and the sliding surface can press the inclined surface, so that the linear motion of the locking piece is converted into the rotary motion of the hook around the fixing piece.

Preferably, the hook is provided with a concave part, the locking piece is in a rod shape, the concave part can be buckled on the outer side wall of the locking piece, and when the concave part is buckled with the locking piece, the lock catch is positioned at a locking position;

the locking piece is driven when linear motion the couple rotates, the couple gives way the space of locking piece, the locking piece moves when the concave part department, the concave part lock arrives on the locking piece, the hasp is followed the unblock position moves to the latched position.

Preferably, the locking device further comprises a torsion spring, the torsion spring is elastically connected between the fixing piece and the hook, and the torsion spring is used for providing a biasing force for moving the lock catch from the unlocking position to the locking position.

Preferably, the handle is fixedly connected with the hook, when the handle is pulled by external force, the handle drives the hook to rotate, and the lock catch moves from the locking position to the unlocking position.

According to the preferable scheme, a through hole is formed in the hook, a fixing shaft is arranged on the fixing piece, the fixing shaft is rotatably connected in the through hole, the torsion spring is sleeved on the fixing piece, and the tail end of the fixing shaft is connected with a fixing bolt.

Preferably, the fixing piece further comprises a base and a vertical plate, the vertical plate is vertically connected to the base, and the vertical plate is fixedly connected with the fixing shaft.

Preferably, the fixing member is disposed on the frame/box body, and the locking member is disposed on the extendable leg.

Preferably, the fixing member is provided on the telescopic leg, and the locking member is provided on the frame/box body.

The utility model provides a hoist side direction safety structure, the hasp sets up between flexible leg and frame/box, the flexible landing leg of side direction includes box and the flexible leg of nested connection in the box, when flexible leg withdraws the box, the hasp can be with flexible leg and frame/box locking for the lock fastener will stretch out and draw back leg and frame/box be connected as an organic wholely, avoid the flexible leg of the whole machine of lorry-mounted crane to deviate from in parking state and the in-process follow-up box, with lorry-mounted crane complete machine width restriction in certain extent, improved the security of lorry-mounted crane complete machine. When the telescopic legs need to extend out of the box body, the telescopic legs and the frame/box body are separated from each other by the lock catch to reach the unlocking position, so that the telescopic legs of the whole crane reach the unlocking position, and the supporting effect on the whole crane is realized.

Further, the utility model discloses a flexible leg is when withdrawing the box in, the hasp can be under the promotion of flexible leg, the couple rotates around the mounting and moves from latched position to unblock position with flexible leg and frame/box locking, can be through the automatic locking of hasp with flexible leg promptly, need not manual operation, avoided manual operation probably to forget the situation that will stretch out and draw back leg locking through the hasp, further avoid the flexible leg of the whole machine of lorry-mounted crane to deviate from in the box under parking state with the in-process of traveling, the security of lorry-mounted crane complete machine has been improved.

Drawings

Fig. 1 is a schematic front view structure diagram of a connection between a telescopic leg and a box body of a lateral safety structure of a crane in an embodiment of the invention;

fig. 2 is a schematic top view of the connection between the telescopic legs and the box body of the lateral safety structure of the crane in the embodiment of the present invention;

fig. 3 is a schematic perspective view of a lateral safety structure of a crane provided on a frame in an embodiment of the present invention;

in the figure, 100, a side telescopic leg; 110. a box body; 120. a telescopic leg; 200. a frame; 300. locking; 310. a fixing member; 311. a fixed shaft; 312. fixing the bolt; 313. a base; 314. a vertical plate; 320. hooking; 321. a bevel; 322. a recess; 323. a through hole; 330. A locking member; 400. a torsion spring; 500. a handle.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 3, the utility model discloses a hoist side direction safety structure of preferred embodiment for locking the flexible leg and the frame of the flexible landing leg of side direction, avoid flexible leg to deviate from the box.

Based on above-mentioned technical scheme, provide a hoist side direction safety structure in this embodiment, including side direction telescopic leg 100, side direction telescopic leg 100 is the landing leg structure that is used for supporting, improves hoist complete machine security to the complete machine of hoist. The lateral telescopic leg 100 comprises a box body 110 and a telescopic leg 120 nested in the box body 110, wherein the box body 110 and the telescopic leg 120 form a telescopic structure, and an oil cylinder is arranged between the box body 110 and the telescopic leg 120 and can drive the telescopic leg 120 to extend into and separate from the box body 110.

Specifically, the oil cylinder drives the telescopic leg 120 to extend into and withdraw from the box body 110, so that the telescopic leg 120 has a retracted position retracted into the box body 110 along a straight line and an extended position extending out of the box body 110, and when the telescopic leg 120 is retracted into the box body 110, the telescopic leg 120 needs to be locked in the box body 110.

The structure further comprises a frame 200 fixedly connected with the box body 110, so that the lateral telescopic supporting leg 100 can be fixed with the frame 200, and the lateral telescopic supporting leg 100 can support the frame 100.

Specifically, as shown in fig. 1 to 3, the structure further includes a lock catch 300, the lock catch 300 is disposed between the extendable leg 120 and the frame 200/box 110, and the lock catch 300 is used to lock the extendable leg 120 and the frame 200/box 110, that is, the lock catch 300 may be disposed between the extendable leg 120 and the frame 200, or between the extendable leg 120 and the box 110, and both may fix the extendable leg 120 and fix the extendable leg 120 in the box 110.

Specifically, latch 300 has a locked position that connects telescoping leg 120 with frame 200/case 110 as a unit and an unlocked position that separates telescoping leg 120 and frame 200/case 110 from each other. When the telescopic leg 120 needs to be extended, the lock catch 300 is set at the unlocking position, so that the telescopic leg 120 can be extended out of the box body 110; after the telescopic leg 120 is retracted, when the telescopic leg 120 is not needed, the lock catch 300 is set at the locking position, so that the telescopic leg 120 can be prevented from extending out of the box body 110, and a safety protection effect is achieved.

Preferably, as shown in fig. 1, the lock catch 300 includes a fixing member 310 and a hook 320, the hook 320 is rotatably connected to the fixing member 310, the fixing member 310 can be connected to the hook 320 by a pivot connection, a latch connection, or the like, so that the hook 320 rotates around the fixing member 310 to move from a locking position to an unlocking position, i.e., to lock and unlock the lock catch 300 by the hook 320.

Preferably, as shown in fig. 1, the locking device 330 is further included, the hook 320 has a slope 321, a sliding surface 331 is formed on a portion of the locking device 330 corresponding to the slope 321, the slope 321 can slide relative to the sliding surface 331 when contacting the sliding surface 331, and the sliding surface 331 can press the slope 321 during relative sliding, so that the linear motion of the locking device 330 is converted into the rotational motion of the hook 320 around the fixing member 310, that is, the locking and unlocking of the present lock catch 300 by the hook 320 is realized.

The sliding surface 331 can be a smooth plane, and the inclined angle of the inclined surface 321 relative to the linear motion track of the locking member 330 can be 45 degrees, 30 degrees or 60 degrees, so that the inclined surface 321 and the sliding surface 331 can drive the hook 320 to rotate by a larger range through sliding.

Preferably, as shown in fig. 1, the hook 320 has a recess 322, the locking member 330 has a rod shape, the recess 322 can be fastened on the outer sidewall of the locking member 330, the recess 322 has a notch-like structure, and the recess 322 can also be provided in a hook-like structure. When the concave portion 322 is engaged with the locking member 330, the locking member 330 limits the concave portion 322 from returning to the locking position, so that the lock catch 300 is located at the locking position, and the locking of the lock catch 300 by the hook 320 is completed. Wherein, the hook 320 can be pressed on the locking member 330 by the bias force of gravity, pressure, etc. so that the hook 320 does not disengage from the locking member 330, and the hook 320 can continuously lock the locking member 330.

Through the process, the telescopic leg 120 can be automatically locked by the structure, additional operation is not needed, when an operator forgets to manually lock the telescopic leg 120, the telescopic leg 120 can be locked, and the safety of the lorry-mounted crane is improved.

Specifically, the locking process of the structure is as follows: the latch 300 moves from the unlocked position to the locked position by rotating the hook 320 when the locking member 330 moves linearly, and allowing the hook 320 to clear the locking member 330, i.e. when the locking member 330 moves to the recess 322, the recess 322 snaps onto the locking member 330.

Preferably, as shown in fig. 1 and 2, a torsion spring 400 is further included, the torsion spring 400 is elastically connected between the fixing member 310 and the hook 320, and both ends of the torsion spring 400 are clamped between the fixing member 310 and the hook 320 by a snap structure, so that the torsion spring 400 can provide a biasing force for moving the latch 300 from the unlocking position to the locking position. That is, after the concave portion 322 is snapped onto the locking member 330, the hook 320 is not separated from the locking member 330; the hook 320 can be automatically returned to its original position after the recess 322 is disengaged from the locking member 330.

Preferably, the handle 500 is fixedly connected with the hook 320, the handle 500 is used for being pulled by an operator, when the handle 500 is pulled by external force, the handle 500 drives the hook 320 to rotate, and the lock catch 300 moves from the locking position to the unlocking position. Specifically, the structure can be used together with a lower vehicle control valve of a lateral telescopic leg, when the telescopic leg 120 needs to be unlocked, a user pulls up the handle 500 and operates the lower vehicle control valve to extend the telescopic leg 120, so as to complete the extension of the telescopic leg 120; when the telescopic leg 120 needs to be locked, the lower vehicle operating valve is operated to extend and retract the telescopic leg 120, and the automatic locking of the telescopic leg 120 is completed.

Preferably, a through hole 323 is formed in the hook 320, a fixing shaft 311 is formed on the fixing member 310, the fixing shaft 311 is rotatably connected in the through hole 323, the torsion spring 400 is sleeved on the fixing member 310, and the tail end of the fixing shaft 311 is connected with a fixing bolt 312, wherein the fixing bolt 312 is connected to the fixing shaft 311 through a thread, so as to install the torsion spring 400 and the hook 320.

Preferably, the fixing member 310 further includes a base 313 and a vertical plate 314, the vertical plate 314 is vertically connected to the base 313, the vertical plate 314 is fixedly connected to the fixing shaft 311, wherein the vertical plate 314 and the fixing shaft 311 can be connected by welding.

Preferably, the fixing member 310 is disposed on the frame 200/case 110, and the locking member 330 is disposed on the extendable leg 120, so as to lock the extendable leg 120. Wherein, the base 313 can be connected with the frame 200/box 110 by welding processing at the installation site. The outside that locking piece 330 located sets up the protective housing, can avoid locking piece 330 and exterior structure to bump the people and damage.

Alternatively, the fixing member 310 may be disposed on the extendable leg 120, and the locking member 330 may be disposed on the frame 200/case 110, and both of them can lock the extendable leg 120. Wherein the base 313 can be welded to the extendable leg 120 at the installation site.

To sum up, the utility model discloses can improve the security of hoist side direction landing leg, avoid hoist side direction landing leg to deviate from stopping or going in the side direction, avoid hoist side direction landing leg to stretch out the whole width that increases the hoist, avoid bumping in the side direction, improve the security of hoist complete machine.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A crane lateral safety structure, comprising:

the lateral telescopic leg (100) comprises a box body (110) and a telescopic leg (120) nested in the box body (110), wherein the telescopic leg (120) has a contraction position retracted into the box body (110) along a straight line and an expansion position extending out of the box body (110);

the frame (200) is fixedly connected with the box body (110);

a locker (300) disposed between the extendable leg (120) and the frame (200)/case (110) for locking the extendable leg (120) and the frame (200)/case (110), the locker (300) having a locking position for integrally connecting the extendable leg (120) and the frame (200)/case (110) and an unlocking position for separating the extendable leg (120) and the frame (200)/case (110) from each other.

2. The lateral safety structure of a crane according to claim 1, wherein the lock catch (300) comprises a fixing member (310) and a hook (320), the hook (320) is rotatably connected to the fixing member (310), and the hook (320) rotates around the fixing member (310) to move from the locking position to the unlocking position.

3. The lateral safety structure of a crane as claimed in claim 2, further comprising a locking member (330), wherein the hook (320) has a slope (322), a sliding surface (331) is formed on a portion of the locking member (330) corresponding to the slope (322), and the sliding surface (331) can press the slope (322) so that the linear motion of the locking member (330) is converted into the rotational motion of the hook (320) around the fixing member (310).

4. A crane side safety structure as claimed in claim 3, wherein the hook (320) has a recess (321), the locking member (330) has a rod shape, the recess (321) can be fastened to the outer side wall of the locking member (330), and the latch (300) is located at the locking position when the recess (321) is fastened to the locking member (330);

when the locking piece (330) moves linearly, the hook (320) is driven to rotate, the hook (320) gives out a space of the locking piece (330), when the locking piece (330) moves to the concave part (321), the concave part (321) is buckled on the locking piece (330), and the lock catch (300) moves from the unlocking position to the locking position.

5. The crane lateral safety structure as claimed in claim 4, further comprising a torsion spring (400), wherein the torsion spring (400) is elastically connected between the fixing member (310) and the hook (320), and the torsion spring (400) is used for providing a biasing force for moving the latch (300) from the unlocking position to the locking position.

6. The lateral safety structure of a crane as claimed in claim 5, further comprising a handle (500) fixedly connected with the hook (320), wherein when the handle (500) is pulled by an external force, the handle (500) drives the hook (320) to rotate, and the lock catch (300) moves from the locking position to the unlocking position.

7. The lateral safety structure of a crane as claimed in claim 6, wherein the hook (320) is provided with a through hole (323), the fixing member (310) is provided with a fixing shaft (311), the fixing shaft (311) is rotatably connected in the through hole (323), the torsion spring (400) is sleeved on the fixing member (310), and the tail end of the fixing shaft (311) is connected with a fixing bolt (312).

8. The lateral safety structure of a crane according to claim 7, wherein the fixing member (310) further comprises a base (313) and a vertical plate (314), the vertical plate (314) is vertically connected to the base (313), and the vertical plate (314) is fixedly connected to the fixed shaft (311).

9. A crane lateral safety structure as claimed in claim 3, wherein the fixing member (310) is provided on the frame (200)/box (110), and the locking member (330) is provided on the extendable leg (120).

10. A crane lateral safety structure as claimed in claim 3, wherein the fixing member (310) is provided on the telescopic leg (120) and the locking member (330) is provided on the frame (200)/box (110).