CN215924198U - Anti-drop self-locking device for sling - Google Patents

Abstract

The utility model relates to the technical field of self-locking devices, in particular to an anti-falling self-locking device for a sling, which improves the protection and the convenience; the novel gear box comprises a shell, two sets of polished rods, a movable block, two sets of racks, two sets of gears, two sets of curb plates, two sets of locking plates, a spring, two springs, a movable rod, a hanging plate, two sets of baffles, two-way lead screw and actuating mechanism, both ends all are provided with the spout about the casing, be provided with the through-hole on the casing, two sets of spouts pass through the through-hole intercommunication, two sets of racks are all vertically installed in the through-hole, the movable block respectively with two sets of polished rods sliding connection, two sets of racks are installed respectively at both ends about the movable block, two sets of gears all rotate and install in the through-hole, two sets of racks respectively with two sets of gear engagement, two sets of gears rotate respectively and install in two sets of spouts, two sets of gears respectively with two sets of gear engagement, the one end of two sets of curb plates is provided with on two sets of gears respectively.

Description

Anti-drop self-locking device for sling

Technical Field

The utility model relates to the technical field of self-locking devices, in particular to an anti-falling self-locking device for a sling.

Background

The sling is a general term for a connecting piece between a crane or a crane main body and a lifted object, and also covers a sling and a sling.

During hoisting operation, a heavy object is generally hung on a sling and then hoisted through the sling, but most of the slings lack a self-locking device, so that the heavy object falls off from the sling in the hoisting process, the heavy object is damaged, and surrounding people can be injured.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides the anti-falling self-locking device of the sling, which improves the protection performance and the convenience.

The utility model relates to an anti-falling self-locking device for a sling, which comprises a shell, two groups of polished rods, a moving block, two groups of racks, two groups of first gears, two groups of second gears, two groups of side plates, two groups of locking plates, a first spring, a second spring, a moving rod, a hanging plate, two groups of baffle plates, a bidirectional screw rod and a driving mechanism, wherein the left end and the right end of the shell are respectively provided with a sliding groove, the shell is provided with a through hole, the two groups of sliding grooves are communicated through the through hole, the two groups of racks are longitudinally arranged in the through hole, the moving block is respectively connected with the two groups of polished rods in a sliding way, the two groups of racks are respectively arranged at the left end and the right end of the moving block, the two groups of first gears are respectively meshed with the two groups of first gears, the two groups of second gears are respectively rotatably arranged in the two groups of sliding grooves, the two groups of first gears are respectively meshed with the two groups of second gears at one end of the two groups of side plates, two groups of side plates are symmetrically arranged, two groups of locking plates are respectively arranged at one end far away from the two groups of side plates, the top end of a first spring is connected with the top end of a through hole, the bottom end of the first spring is connected with the top end of a moving block, a cavity is arranged inside the hanging plate, the top end of the hanging plate is provided with a left opening and a right opening, the left opening and the right opening are both communicated with the cavity, baffle plates are arranged in the left opening and the right opening in a sliding way, a bidirectional screw rod is rotationally arranged in the cavity, the two groups of baffles are in threaded connection with the bidirectional screw rod, the bottom end of the moving rod is connected with the top end of the hanging plate, the top end of the moving rod extends into the through hole from the bottom end of the shell and is connected with the bottom end of the moving block, the moving rod is arranged between the left opening and the right opening, the top end of the second spring is connected with the bottom end of the moving block, the bottom end of the second spring is connected with the bottom end of the through hole, the second spring is sleeved on the outer side of the moving rod, and the driving mechanism is installed in the cavity; the weight is hung between the two baffles, the two-way screw rod is rotated through the driving mechanism, so that the two groups of baffles move in a mirror image manner, the shell is lifted, the moving block moves oppositely and reversely under the action of the moving rod, the hanging plate and the weight in the lifting process of the shell, the moving block moves downwards under the matching of the two groups of smooth rods, so that the two groups of racks drive the two groups of gears to rotate through the two groups of gears, respectively, the ends, far away from the two groups of side plates, move downwards and move towards the vicinity simultaneously, the ends, close to the two locking plates are contacted with the bottom end of the hanging plate, respectively, so that the shell, the two groups of side plates, the two groups of locking plates and the hanging plate form a self-locking space, the weight is reduced and falls off in the lifting process, when the weight reaches a specified place, the weight falls to the ground, and then the moving block lifts relative to the shell under the elastic deformation action of the spring I and the spring II, thereby make two sets of curb plates drive two sets of locking plates respectively and keep away from the link plate to remove the auto-lock, improved the protectiveness, improved the convenience.

Preferably, the driving mechanism comprises a bearing, a rotating shaft, a handle, a first conical wheel and a second conical wheel, the bearing is mounted at the bottom end of the hanging plate, the rotating shaft is rotatably connected with the bearing, the top end of the rotating shaft extends into the cavity and is connected with the first conical wheel, the second conical wheel is mounted on the bidirectional screw rod, the first conical wheel is meshed with the second conical wheel, and the handle is mounted at the bottom end of the rotating shaft; make the pivot drive a cone pulley rotation under the cooperation of bearing through the handle to make No. two cone pulleys drive two-way lead screw and rotate, thereby make two-way lead screw carry out the removal of mirror image to two sets of baffles, improved the convenience.

Preferably, the circular sliding block is arranged on the outer side wall of the disc, the annular sliding block is installed in the annular sliding groove in a sliding mode, and the lifting lug is installed at the top end of the disc; the lifting lug and the disc can rotate in the circular groove through the annular sliding block, and convenience is improved.

Preferably, the hanging plate further comprises a plurality of teeth, and the teeth are all arranged at the bottom end of the hanging plate; one end of the two groups of locking plates close to each other is respectively contacted with the multiple sets of teeth, so that self-locking is carried out, and the fixity is improved.

Preferably, the locking device also comprises two groups of gaskets, wherein the two groups of gaskets are respectively arranged at one ends of the two groups of locking plates which are close to each other; the two groups of gaskets are respectively contacted with the multiple sets of teeth, so that the stability is improved.

Preferably, the two groups of gaskets are made of rubber; two sets of gaskets are made of rubber materials, and stability is improved.

Preferably, the shell is made of Q345B carbon alloy steel; the shell is made of Q345B carbon alloy steel, so that the safety is improved.

Compared with the prior art, the utility model has the beneficial effects that: the weight is hung between the two baffles, the two-way screw rod is rotated through the driving mechanism, so that the two groups of baffles move in a mirror image close manner, the shell is lifted through the sling, the movable block moves oppositely and reversely under the action of the movable rod, the hanging plate and the weight in the lifting process of the shell, the movable block moves downwards under the coordination of the two groups of smooth rods, so that the two groups of racks drive the two groups of second gears to rotate through the two groups of first gears respectively, the far ends of the two groups of side plates move downwards and move close to each other simultaneously, the close ends of the two locking plates are contacted with the bottom end of the hanging plate respectively, and the shell, the two groups of side plates, the two groups of locking plates and the hanging plate form a self-locking space, so that the weight is reduced to fall off in the lifting process, when the weight reaches a designated place, the weight falls to the ground, and then the movable block lifts relative to the shell under the elastic deformation action of the first spring and the second spring respectively, thereby make two sets of curb plates drive two sets of locking plates respectively and keep away from the link plate to remove the auto-lock, improved the protectiveness, improved the convenience.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic view of a partially enlarged structure of part A in FIG. 1;

FIG. 3 is a schematic elevation view of the present invention;

FIG. 4 is an enlarged schematic view of the housing;

in the drawings, the reference numbers: 1. a housing; 2. a polished rod; 3. a moving block; 4. a rack; 5. a first gear; 6. a second gear; 7. a side plate; 8. a locking plate; 9. a first spring; 10. a second spring; 11. a travel bar; 12. hanging the plate; 14. a baffle plate; 15. a bidirectional lead screw; 16. a bearing; 17. a rotating shaft; 18. a handle; 19. a first conical pulley; 20. a second cone wheel; 21. a disc; 22. an annular slider; 23. lifting lugs; 24. teeth; 25. and (7) a gasket.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is provided for disclosure.

Example 1

An anti-drop self-locking device for a sling comprises a shell 1, two groups of smooth rods 2, a moving block 3, two groups of racks 4, two groups of first gears 5, two groups of second gears 6, two groups of side plates 7, two groups of locking plates 8, a first spring 9, a second spring 10, a moving rod 11, a hanging plate 12, two groups of baffles 14, a bidirectional screw 15 and a driving mechanism, wherein chutes are arranged at the left end and the right end of the shell 1 respectively, through holes are arranged on the shell 1, the two groups of chutes are communicated through the through holes, the two groups of racks 4 are longitudinally arranged in the through holes, the moving block 3 is respectively connected with the two groups of smooth rods 2 in a sliding manner, the two groups of racks 4 are respectively arranged at the left end and the right end of the moving block 3, the two groups of first gears 5 are rotatably arranged in the through holes, the two groups of racks 4 are respectively engaged with the two groups of first gears 5, the two groups of second gears 6 are respectively rotatably arranged in the two groups of chutes, the two groups of first gears 5 are respectively engaged with the two groups of second gears 6, one end of two groups of side plates 7 is respectively provided with two groups of second gears 6, the two groups of side plates 7 are symmetrically arranged, two groups of locking plates 8 are respectively arranged at one end far away from the two groups of side plates 7, the top end of a first spring 9 is connected with the top end of a through hole, the bottom end of the first spring 9 is connected with the top end of a movable block 3, a cavity is arranged inside a hanging plate 12, the top end of the hanging plate 12 is provided with a left opening and a right opening, the left opening and the right opening are both communicated with the cavity, baffle plates 14 are arranged in the left opening and the right opening in a sliding manner, a bidirectional screw 15 is rotatably arranged in the cavity, the two groups of baffle plates 14 are both in threaded connection with the bidirectional screw 15, the bottom end of a movable rod 11 is connected with the top end of the hanging plate 12, the top end of the movable rod 11 extends into the through hole from the bottom end of a shell 1 and is connected with the bottom end of the movable block 3, the movable rod 11 is arranged between the left opening and the right opening, the top end of the second spring 10 is connected with the bottom end of the movable block 3, the bottom end of the second spring 10 is connected with the bottom end of the through hole, the second spring 10 is sleeved on the outer side of the movable rod 11, and the driving mechanism is installed in the cavity; a heavy object is hung between two baffle plates 14, then a driving mechanism is used for enabling a bidirectional screw 15 to rotate, so that two groups of baffle plates 14 move in a mirror image similar manner, then a casing 1 is lifted through a sling, in the lifting process of the casing 1, a moving block 3 moves oppositely and reversely to the casing 1 under the action of a moving rod 11, a hanging plate 12 and the heavy object, the moving block 3 moves downwards under the coordination of two groups of smooth rods 2, so that two groups of racks 4 drive two groups of gears 6 to rotate through two groups of first gears 5 respectively, so that one ends of two groups of side plates 7 which are far away are moved downwards and are moved towards close simultaneously, so that one ends of two locking plates 8 which are close to each other are contacted with the bottom end of the hanging plate 12 respectively, and the casing 1, the two groups of side plates 7, the two groups of locking plates 8 and the hanging plate 12 form a self-locking space, so that the heavy object is reduced to fall off in the lifting process, when the heavy object reaches the appointed place, fall to the ground with the heavy object, then the movable block 3 risees for casing 1 under spring 9 and No. two spring 10 elastic deformation's effect respectively to make two sets of curb plates 7 drive two sets of locking plates 8 respectively and keep away from link plate 12, thereby relieve the auto-lock, improved the protectiveness, improved the convenience.

As shown in fig. 1 to 4, in the anti-drop self-locking device for a sling, when in operation, a heavy object is hung between two sets of baffles 14, a rotating shaft 17 drives a first conical wheel 19 to rotate under the cooperation of a bearing 16 through a handle 18, so that a second conical wheel 20 drives a bidirectional screw 15 to rotate, so that the bidirectional screw 15 performs mirror-image approach movement on the two sets of baffles 14, then the shell 1 is lifted, in the lifting process of the shell 1, a moving block 3 performs relative downward movement with the shell 1 under the action of a moving rod 11, a hanging plate 12 and the heavy object, the moving block 3 moves downward under the cooperation of two sets of optical bars 2, so that two sets of racks 4 respectively drive two sets of second gears 6 to rotate through two sets of first gears 5, so that the far ends of two sets of side plates 7 move downward and simultaneously perform approach movement, so that the near ends of two locking plates 8 are respectively contacted with the bottom ends of the hanging plate 12, thereby make casing 1, two sets of curb plates 7, two sets of locking plates 8 and link plate 12 form the auto-lock space to make the heavy object reduce to drop at the hoist and mount in-process, reach the appointed place when the heavy object, fall to the ground the heavy object, then the movable block 3 risees for casing 1 under the effect of spring 9 and No. two spring 10 elastic deformation respectively, thereby make two sets of curb plates 7 drive two sets of locking plates 8 respectively and keep away from link plate 12, thereby relieve the auto-lock.

The anti-falling self-locking device for the sling has the advantages that the installation mode, the connection mode or the arrangement mode are common mechanical modes, and the anti-falling self-locking device can be implemented as long as the beneficial effects of the anti-falling self-locking device can be achieved.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

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

Claims (7)

1. An anti-drop self-locking device for a sling is characterized by comprising a shell (1), two groups of polished rods (2), a moving block (3), two groups of racks (4), two groups of first gears (5), two groups of second gears (6), two groups of side plates (7), two groups of locking plates (8), a first spring (9), a second spring (10), a moving rod (11), a hanging plate (12), two groups of baffles (14), a bidirectional screw (15) and a driving mechanism, wherein the left end and the right end of the shell (1) are respectively provided with a sliding groove, the shell (1) is provided with a through hole, the two groups of sliding grooves are communicated through the through hole, the two groups of racks (4) are longitudinally arranged in the through hole, the moving block (3) is respectively connected with the two groups of polished rods (2) in a sliding manner, the two groups of racks (4) are respectively arranged at the left end and the right end of the moving block (3), and the two groups of first gears (5) are both rotatably arranged in the through hole, two groups of racks (4) are respectively meshed with two groups of first gears (5), two groups of second gears (6) are respectively rotatably installed in two groups of chutes, two groups of first gears (5) are respectively meshed with two groups of second gears (6), one end of two groups of side plates (7) is respectively provided with two groups of second gears (6), the two groups of side plates (7) are symmetrically arranged, two groups of locking plates (8) are respectively installed at one ends far away from the two groups of side plates (7), the top end of a first spring (9) is connected with the top end of a through hole, the bottom end of the first spring (9) is connected with the top end of a moving block (3), a cavity is arranged inside the hanging plate (12), the top end of the hanging plate (12) is provided with a left opening and a right opening, the left opening and the right opening are both communicated with the cavity, baffles (14) are both slidably installed in the left opening and the right opening, a bidirectional screw (15) is rotatably installed in the cavity, and the two groups of baffles (14) are both in threaded connection with the bidirectional screw (15), the top of link plate (12) is connected to the bottom of carriage release lever (11), the top of carriage release lever (11) extends to in the through-hole and connects the bottom of movable block (3) from the bottom of casing (1), carriage release lever (11) are between left opening and right opening, the bottom of movable block (3) is connected on the top of No. two spring (10), the bottom of through-hole is connected to the bottom of No. two spring (10), No. two spring (10) suit are in the outside of carriage release lever (11), actuating mechanism installs in the cavity.

2. The fall-preventing self-locking device of a sling according to claim 1, wherein the driving mechanism comprises a bearing (16), a rotating shaft (17), a handle (18), a first conical wheel (19) and a second conical wheel (20), the bearing (16) is installed at the bottom end of the hanging plate (12), the rotating shaft (17) is rotatably connected with the bearing (16), the top end of the rotating shaft (17) extends into the cavity and is connected with the first conical wheel (19), the second conical wheel (20) is installed on the bidirectional screw (15), the first conical wheel (19) is meshed with the second conical wheel (20), and the handle (18) is installed at the bottom end of the rotating shaft (17).

3. The anti-drop self-locking device for the sling according to claim 1, further comprising a disc (21), an annular slider (22) and a lifting lug (23), wherein a circular groove is formed at the top end of the housing (1), an annular sliding groove is formed in the inner wall of the circular groove, the annular slider (22) is arranged on the outer side wall of the disc (21), the annular slider (22) is slidably mounted in the annular sliding groove, and the lifting lug (23) is mounted at the top end of the disc (21).

4. The fall-preventing self-locking device for the sling according to claim 1, further comprising a plurality of teeth (24), wherein the teeth (24) are all mounted at the bottom end of the hanging plate (12).

5. An anti-drop self-locking device for a suspension rigging according to claim 1, further comprising two sets of washers (25), wherein the two sets of washers (25) are respectively installed at the ends of the two sets of locking plates (8) close to each other.

6. An anti-drop self-locking device for a suspension cable as claimed in claim 5, wherein the two sets of washers (25) are made of rubber.

7. The anti-drop self-locking device for the suspension cable tool as claimed in claim 1, wherein the shell (1) is made of Q345B carbon alloy steel.

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