CN212222180U

CN212222180U - Hook anti-falling device of crane

Info

Publication number: CN212222180U
Application number: CN202020777077.0U
Authority: CN
Inventors: 李东保
Original assignee: Wuxi Kedejin Lifting Technology Co ltd
Current assignee: Wuxi Kedejin Lifting Technology Co ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2020-12-25
Anticipated expiration: 2030-05-12

Abstract

The utility model discloses a hook anti-drop device of a crane, which comprises a hook and an anti-drop structure; the tail end of the lifting hook is provided with a butt joint groove; the head part of the lifting hook is provided with an anti-falling structure; the anti-falling structure comprises a blocking rod and an ejection structure; the ejection structure ejects one end of the blocking rod, the other end of the blocking rod is movably butted and embedded into the butt joint groove, and the lifting hook is connected end to form a closed loop. The utility model provides a lifting hook anticreep device of hoist can effectively prevent the effect of the condition of taking place the unhook in handling.

Description

Hook anti-falling device of crane

Technical Field

The utility model relates to a hoist field especially relates to lifting hook anticreep field.

Background

The crane is an important part of life, brings great convenience to human life, and can carry heavy objects which are difficult to move by human beings; however, in the process of using the crane, due to the fact that the weight and the volume of the transported object are large, if the crane is improperly used or fails, the operator is threatened; the anti-unhooking device comprises a lifting hook of a crane, when the lifting hook is used for hooking a heavy object, unhooking can occur due to movement, an anti-unhooking clamp is installed in a common anti-unhooking mode at present, the anti-unhooking clamp can occupy the space of a hooking part of the lifting hook, and an operator needs to break the anti-unhooking clamp forcibly to hook the heavy object.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects existing in the prior art, the utility model provides a lifting hook anti-disengaging device of crane can effectively prevent the effect of the condition of unhooking in the handling.

The technical scheme is as follows: in order to achieve the above purpose, the technical scheme of the utility model is as follows:

a lifting hook anti-falling device of a crane comprises a lifting hook and an anti-falling structure; the tail end of the lifting hook is provided with a butt joint groove; the head part of the lifting hook is provided with an anti-falling structure; the anti-falling structure comprises a blocking rod and an ejection structure; the ejection structure ejects one end of the blocking rod, the other end of the blocking rod is movably butted and embedded into the butt joint groove, and the lifting hook is connected end to form a closed loop.

Further, the ejection structure comprises a telescopic spring and a sliding block; a sliding groove is formed in the head of the lifting hook; an arc-shaped channel is formed in one side, facing the tail part of the lifting hook, of the sliding groove and is communicated with the sliding groove; the blocking rod is embedded in the arc-shaped channel; an extension spring is fixedly clamped between one side of the sliding block and the inner wall of the extension spring; the other side of the sliding block is fixedly connected with one end of the blocking rod; the telescopic spring pushes against the sliding block, and the sliding block slides to drive the blocking rod to move.

Furthermore, the bottom surface of the sliding groove is in a slope type; the bottom end of the sliding block is wedge-shaped; the sliding block slides in an up-and-down slope manner on the bottom surface of the sliding groove through a wedge shape.

Further, the longitudinal section of the sliding groove is larger than that of the arc-shaped channel; and the sliding block slides to the joint of the sliding groove and the arc-shaped channel and pauses.

Further, the anti-dropping structure further comprises a pull-back structure; the sliding groove is arranged at an interval inside the lifting hook and is provided with a containing groove and is positioned beside the connecting part of the sliding groove and the telescopic spring; the accommodating groove is communicated with the sliding groove through the passing hole, and the central shaft of the passing hole is superposed with the central line of the telescopic spring; and the traction end of the pull-back structure penetrates through the through hole, penetrates through the inside of the telescopic spring and is fixed on the sliding block.

Further, the pull-back structure comprises a pull wire and a winding roller; the driving device is in driving connection with the rolling roller; one end of the traction wire is fixed on the side wall of the winding roller in a traction manner and is curled; the other end of the traction wire penetrates through the through hole to penetrate through the inside of the telescopic spring and is fixedly connected with the sliding block; the rolling roller rotates to take up and pay off the traction line, and the traction line pulls and pulls the sliding block to slide, so that the blocking rod is driven to be recovered.

Has the advantages that: the utility model can effectively prevent the unhooking condition when carrying heavy objects, and avoid unnecessary damage; including but not limited to the following technical effects:

1) the pushing-out structure is used for pushing the blocking rod out of the lifting hook by utilizing the action of elastic force and butting the tail end of the upper lifting hook; the lifting hook can be connected end to form a closed loop, and unhooking can be effectively prevented;

2) the operating personnel can be in keeping away from the position direct control of heavy object and pull back the structure and go out the structure and mutually support and will block the barricade bullet and draw in and out the lifting hook, reduce the time of operating personnel contact beside the heavy object, avoid the risk.

Drawings

FIG. 1 is a sectional view of a hook anti-drop device;

FIG. 2 is a sectional view of the anti-separation structure;

FIG. 3 is a cross-sectional view of the ejection structure;

fig. 4 is a cross-sectional view of the pull-back structure.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in figures 1-4: a lifting hook anti-falling device of a crane comprises a lifting hook 1 and an anti-falling structure 2; the tail end of the lifting hook 1 is provided with a butt joint groove 11; the head of the lifting hook 1 is provided with an anti-falling structure 2; the anti-dropping structure 2 comprises a blocking rod 21 and an ejection structure 22; the ejection structure 22 ejects one end of the blocking rod 21, the other end of the blocking rod 21 is movably butted and embedded into the butt joint groove 11, and the hook 1 is connected end to form a closed loop. When the lifting hook is in an initial position, the blocking rod 21 is arranged inside the head of the lifting hook 1, a gap is formed between the head and the tail end of the lifting hook 1, the lifting hook 1 can hook a rope tied on a heavy object, after the rope is hooked, the ejection structure 22 is controlled to push one end of the blocking rod 21, the other end of the blocking rod 21 ejects out of the head of the lifting hook 1, and the ejection end of the blocking rod 21 is movably butted and embedded into the butt joint groove 11; the head and the tail of the lifting hook 1 are connected to form a closed loop, so that the rope is looped to prevent the rope from unhooking; the condition of unhooking can be effectively avoided in the process of carrying heavy objects.

The ejection structure 22 comprises a telescopic spring 221 and a sliding block 222; a sliding groove 12 is formed in the head of the lifting hook 1; an arc-shaped channel 13 is formed in one side of the sliding groove 12 facing the tail of the lifting hook 1 and communicated with the sliding groove; the blocking rod 21 is embedded in the arc-shaped channel 13; an extension spring 221 is fixedly clamped between one side of the sliding block 222 and the inner wall of the extension spring 221; the other side of the sliding block 222 is fixedly connected with one end of the blocking rod 21; the extension spring 221 pushes against the sliding block 222, and the sliding block 222 slides to drive the blocking rod 21 to move. The extension spring 221 extends to push the sliding block 222 to move in the sliding groove 12, while the other end of the sliding block 222 pushes one end of the blocking rod 21, the other end of the blocking rod 21 is pushed out of the arc-shaped channel 13, and the pushed end of the blocking rod 21 moves towards the tail end of the hook 1 along the extending direction of the track of the arc-shaped channel 13 and is embedded in the butt-joint groove 11 on the tail end of the hook 1; the hook 1 is connected end to form a closed loop to prevent the rope from unhooking.

The bottom surface of the sliding groove 12 is in a slope type; the bottom end of the sliding block 222 is a wedge 223; the sliding block 222 slides up and down on the bottom surface of the sliding groove 12 by the wedge 223. The movement track of the blocking rod 21 in the arc-shaped channel 13 is arc-shaped, and the movement range comprises a distance between two ends of the arc-shaped channel 13; when the spring contracts, one end of the blocking rod 21 connected with the sliding block 222 moves in the sliding groove 12 along with the sliding block 222, the bottom surface of the sliding groove 12 is provided with a slope type which can meet the requirement that the blocking rod 21 cannot be clamped when moving in the arc-shaped channel 13, and therefore the blocking rod 21 is pulled back to the inside of the head of the lifting hook 1, and a rope on a heavy object can be hooked.

The longitudinal section of the sliding groove 12 is larger than that of the arc-shaped channel 13; the sliding block 222 slides to the joint of the sliding groove 12 and the arc-shaped channel 13 and pauses. The extension spring 221 extends, the sliding block 222 moves in the sliding groove 12, the blocking rod 21 is pushed out, when the sliding block 222 moves to the joint of the sliding groove 12 and the arc-shaped channel 13, the sliding block 222 is stopped and suspended by one end of the arc-shaped channel 13, namely the side wall of the sliding groove 12, and at the moment, the pushing end of the blocking rod 21 is embedded into the butt joint groove 11; here the sliding block 222 acts as a limit.

The anti-falling structure 2 further comprises a pull-back structure 23; the inner part of the lifting hook 1 is provided with accommodating grooves 14 at intervals of the sliding groove 12 and is positioned beside the joint of the sliding groove 12 and the extension spring 221; the accommodating groove 14 is communicated with the sliding groove 12 through a through hole 15, and the central axis of the through hole 15 is superposed with the central line of the telescopic spring 221; the pulling end of the pulling-back structure 23 passes through the through hole 15 and penetrates through the inside of the telescopic spring 221 to be fixed on the sliding block 222. The traction end of the pull-back structure 23 can penetrate through the through hole 15 and the sliding block 222 pulled inside the telescopic spring 221, the sliding block 222 is pulled to be close to the through hole 15, the telescopic spring 221 is compressed, the blocking rod 21 is pulled back to the inside of the lifting hook 1, the purpose of withdrawing the blocking rod 21 is achieved, and therefore a rope on a heavy object can be hooked.

The pull-back structure 23 comprises a pull wire 231 and a winding roller 232; the driving device is in driving connection with the winding roller 232; one end of the traction wire 231 is fixedly pulled on the side wall of the winding roller 232 and is curled; the other end of the traction wire 231 penetrates through the through hole 15 and penetrates through the inside of the telescopic spring 221 to be fixedly connected with the sliding block 222; the winding roller 232 rotates to wind and unwind the traction line 231, and the traction line 231 pulls and pulls the sliding block 222 to slide, so that the blocking rod 21 is driven to be recovered. The controller of the driving device is connected with a remote controller operated by an operator through wireless signals, and when a rope on a heavy object is hooked, the anti-falling device is prevented from being directly operated manually; an output shaft of the driving device is in driving connection with one end of the winding roller 232, and the other end of the winding roller 232 is in rotary connection with the side wall of the accommodating groove 14 through a bearing; the winding roller 232 rotates, one end of the traction wire 231 is wound and curled on the winding roller 232, the other end of the traction wire 231 penetrates through the through hole 15 and the inside of the telescopic spring 221 to pull the sliding block 222, the sliding block 222 is pulled to move towards the through hole 15, the blocking rod 21 is driven to be pulled into the sliding groove 12, the ejecting end of the blocking rod 21 is separated from the butt joint groove 11 and is retracted into the arc-shaped channel 13, therefore, the rope can be hooked, after the rope is hooked, the output shaft of the driving device is controlled to rotate reversely, the winding roller 232 releases the traction wire 231, the telescopic spring 221 extends, the pushing sliding block 222 moves to the joint of the sliding groove 12 and the arc-shaped channel 13, the rope is limited and suspended, and meanwhile, the ejecting end of the blocking rod 21 is abutted and embedded into the butt joint groove 11, and anti-falling installation is completed; the condition that the heavy object takes place to unhook in handling can be effectively avoided.

The foregoing description is of the preferred embodiment of the present invention and it will be apparent to those skilled in the art that modifications and variations can be made without departing from the principles of the invention and these modifications and variations are considered to be within the scope of the invention.

Claims

1. The utility model provides a lifting hook anticreep device of hoist which characterized in that: comprises a lifting hook (1) and an anti-falling structure (2); the tail end of the lifting hook (1) is provided with a butt joint groove (11); the head of the lifting hook (1) is provided with an anti-falling structure (2); the anti-falling structure (2) comprises a blocking rod (21) and an ejection structure (22); the ejection structure (22) ejects one end of the blocking rod (21), the other end of the blocking rod (21) is movably butted and embedded into the butt joint groove (11), and the lifting hook (1) is connected end to form a closed loop.

2. A hook drop prevention device of a crane according to claim 1, wherein: the ejection structure (22) comprises a telescopic spring (221) and a sliding block (222); a sliding groove (12) is formed in the head of the lifting hook (1); one side of the sliding groove (12) facing the tail part of the lifting hook (1) is provided with an arc-shaped channel (13) which is communicated with the sliding groove; the blocking rod (21) is embedded in the arc-shaped channel (13); an extension spring (221) is fixedly clamped between one side of the sliding block (222) and the inner wall of the extension spring (221); the other side of the sliding block (222) is fixedly connected with one end of the blocking rod (21); the telescopic spring (221) pushes the sliding block (222), and the sliding block (222) slides to drive the blocking rod (21) to move.

3. A hook drop prevention device of a crane according to claim 2, wherein: the bottom surface of the sliding groove (12) is in a slope type; the bottom end of the sliding block (222) is in a wedge shape (223); the sliding block (222) slides up and down on the bottom surface of the sliding groove (12) through a wedge type (223).

4. A hook drop prevention device of a crane according to claim 2, wherein: the longitudinal section of the sliding groove (12) is larger than that of the arc-shaped channel (13); the sliding block (222) slides to the joint of the sliding groove (12) and the arc-shaped channel (13) and pauses.

5. A hook drop prevention device of a crane according to claim 1, wherein: the anti-falling structure (2) further comprises a pull-back structure (23); the inner space of the lifting hook (1) is provided with a sliding groove (12) at intervals, and a containing groove (14) is arranged at the side of the joint of the sliding groove (12) and the telescopic spring (221); the accommodating groove (14) is communicated with the sliding groove (12) through a through hole (15), and the central axis of the through hole (15) is superposed with the central line of the telescopic spring (221); the traction end of the pull-back structure (23) penetrates through the through hole (15) and penetrates through the inside of the telescopic spring (221) to be fixed on the sliding block (222).

6. A hook drop prevention device of a crane as claimed in claim 5, wherein: the pull-back structure (23) comprises a pull wire (231) and a winding roller (232); the driving device is in driving connection with the winding roller (232); one end of the traction wire (231) is fixed on the side wall of the winding roller (232) in a traction manner and is curled; the other end of the traction wire (231) penetrates through the through hole (15) and penetrates through the inside of the telescopic spring (221) to be fixedly connected with the sliding block (222); the winding roller (232) rotates to take up and pay off the traction line (231), the traction line (231) pulls the sliding block (222) to slide, and therefore the blocking rod (21) is driven to be recovered.