CN110642141B - Safety lifting hook and application method thereof - Google Patents
Safety lifting hook and application method thereof Download PDFInfo
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- CN110642141B CN110642141B CN201910818688.7A CN201910818688A CN110642141B CN 110642141 B CN110642141 B CN 110642141B CN 201910818688 A CN201910818688 A CN 201910818688A CN 110642141 B CN110642141 B CN 110642141B
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- connecting plate
- groove
- lifting
- lifting hook
- hook body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
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- Mechanical Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Abstract
The invention discloses a safety lifting hook and an application method thereof, relates to the technical field of hoisting machinery, and solves the problem that safety accidents are easily caused because goods on the lifting hook cannot form stable self-locking when violently shaking. A safety lifting hook comprises a lifting hook body, wherein a pulley assembly is arranged on the upper portion of the lifting hook body, and the safety lifting hook is characterized in that a connecting plate is rotatably arranged at the root of the lifting hook body through an elastic torsion piece, one end, far away from the elastic torsion piece, of the connecting plate abuts against the hook tip of the lifting hook body, a lifting ring is arranged on the connecting plate, and the lifting ring is sleeved on the lifting hook body. The safety lifting hook has good self-locking stability, when goods on the lifting belt are violently shaken, the lifting belt is not easy to separate from the lifting hook body, so that safety accidents are not easy to cause, and the whole safety lifting hook has a good application effect.
Description
Technical Field
The invention relates to the technical field of hoisting machinery, in particular to a safety lifting hook and an application method thereof.
Background
A hook is one of the most common spreaders in hoisting machinery. The hook is often suspended from the wire rope of the hoisting mechanism by means of a pulley block or the like.
The invention discloses a lifting hook in Chinese patent with publication number CN104386577A, which comprises a lifting hook body, wherein the upper part of the lifting hook body is provided with a pulley component, and a safety clip for sealing the lifting hook body is arranged between the hook tip part and the root part of the lifting hook body, and is characterized in that: the lifting hook comprises a lifting hook body and is characterized in that two transmission connecting plates extending towards the lower side of the rear side of the lifting hook body are arranged on two sides of the root of the lifting hook body, the two transmission connecting plates are arranged oppositely, the upper edges of the two transmission connecting plates are arranged into a downward concave arc corresponding to a pulley assembly, a counterweight mechanism for driving a safety card to seal the lifting hook body is arranged between the outer ends of the two transmission connecting plates, the inner ends of the two transmission connecting plates are hinged with the root of the lifting hook body, the upper end of the safety card is fixedly connected with the inner end of the transmission connecting plate, and the lower end of the.
Among the above-mentioned application document, self gravity through the weight lever, and through the transmission connecting plate, make the insurance card butt joint on the lifting hook body at the hook point portion of lifting hook body, improve the security performance of lifting hook with this, but when the lifting hook was used in high altitude construction, the lifting hook body took place easily through the goods that the suspender bore and rocks, and when rocking comparatively acutely, the insurance card took place easily with the hook point portion of lifting hook body and breaks away from, and then lead to the suspender to break away from the lifting hook body easily, cause the incident easily, therefore, need provide a new scheme and solve above-mentioned problem.
Disclosure of Invention
The invention aims to provide a safety lifting hook, aiming at solving the problem that safety accidents are easily caused because goods on the lifting hook cannot form stable self-locking when violently shaking in the prior art, and the safety lifting hook can maintain good and stable self-locking in the working process and is not easy to cause safety accidents.
In order to achieve the purpose, the invention provides the following technical scheme:
the safety lifting hook comprises a lifting hook body, wherein a pulley assembly is arranged on the upper portion of the lifting hook body, a connecting plate is rotatably arranged at the root of the lifting hook body through an elastic torsion piece, one end, far away from the elastic torsion piece, of the connecting plate abuts against the hook tip of the lifting hook body, a lifting ring is arranged on the connecting plate, and the lifting ring is sleeved on the lifting hook body.
Through adopting above-mentioned technical scheme, when safety lifting hook was in the auto-lock state, the one end butt that the elasticity twister was kept away from to the connecting plate was at the hook point portion of lifting hook body, rotate this moment and carry the pull ring, make the connecting plate break away from the contact with the hook point portion of lifting hook body, the one end butt that the elasticity twister was kept away from to the connecting plate is at the root of lifting hook body, place the suspender that bears the weight of the goods on the lifting hook body again, then loosen and carry the pull ring, and the elasticity twister utilizes the elastic restoring force of self to make the connecting plate get back to initial position department. So set up, elasticity torsion member utilizes the elastic restoring force of self to make the tight butt of connecting plate at the hook point portion of lifting hook body, makes the lifting hook body when taking place acutely to rock, and the one end that elasticity torsion member was kept away from to the connecting plate also can not take place to break away from with the lifting hook body, and then can maintain good stable auto-lock state, makes the suspender tightly in the lifting hook, is difficult for causing the incident.
Furthermore, the hook point portion of lifting hook body is provided with the draw-in groove that is used for the joint connecting plate, and the one end slip setting of elastic torsion spare is kept away from to the connecting plate in the draw-in groove.
Through adopting above-mentioned technical scheme, when the joint integrated circuit board connects in the draw-in groove, improved the stability of safety lifting hook under the auto-lock state, when safety lifting hook in the course of the work, be favorable to making the fishplate bar keep away from the one end of elasticity torsion piece and be difficult for taking place to break away from with the lifting hook body, guaranteed the security of safety lifting hook in the operation. Meanwhile, the clamping groove also plays a good limiting role in the connecting plate, when the safety lifting hook is in a self-locking state, the clamping groove enables the connecting plate not to be prone to transverse displacement, the elastic torsion piece is well protected, and the service life of the whole safety lifting hook is prolonged.
Further, an arc-shaped part used for clamping the connecting plate is arranged in the clamping groove, and when the connecting plate is clamped in the clamping groove, the arc-shaped part abuts against the side wall of the connecting plate; the bottom of draw-in groove is provided with the spout, and in the spout that arc portion slided and set up, and be provided with elastic connection spare between the bottom of spout and the arc portion.
Through adopting above-mentioned technical scheme, arc portion slides in the spout, does not influence the rotation of connecting plate, and elastic connection spare utilizes the elastic restoring force of self can play the effect of restoring to the throne to arc portion. When the safety lifting hook is in the self-locking state, the arc-shaped part is abutted against the side wall of the connecting plate, so that the connecting plate is tightly fixed in the clamping groove, the stability of the safety lifting hook in the self-locking state is improved, the safety accident caused by the separation of the hanging strip and the safety lifting hook is effectively avoided, and the integral safety performance of the safety lifting hook is favorably improved.
Furthermore, the root of lifting hook body is provided with the stopper, is provided with the spacing groove that plays limiting displacement to carrying the pull-up ring on the stopper, and carries the pull-up ring and slide and set up in the spacing groove.
Through adopting above-mentioned technical scheme, carry and draw the ring and slide and set up in the spacing groove on the stopper, improved and draw the stability of ring at the rotation in-process, simultaneously, the stopper still plays certain guard action to carrying and drawing the ring, prevents to carry the ring and takes place deformation because of receiving the collision, is favorable to improving the holistic stability of safety hook.
Furthermore, the bottom of the limiting groove is provided with an elastic clamping ring which plays a clamping and fixing role for the lifting ring.
Through adopting above-mentioned technical scheme, carry the pull ring and slide in the spacing groove to can the joint in the elasticity snap ring, at this moment, elasticity torsion member can not utilize the elastic restoring force of self to make the pull ring break away from the elasticity snap ring, is convenient for place the suspender that bears the weight of the goods on the lifting hook body, has optimized operating procedure, has saved operating time effectively, has improved work efficiency.
Further, the hook point portion of lifting hook body is gone up and is set up the groove of sliding, slides in the groove of sliding and is provided with the fore-set, and the fore-set sets up in the draw-in groove, and is provided with the elastic component between the bottom in groove of sliding and the fore-set, and when the connecting plate joint was in the draw-in groove, the one end of arc portion was kept away from at the connecting plate to the fore-set butt.
Through adopting above-mentioned technical scheme, be in the auto-lock state when the lifting hook body, when needing to place the suspender on the lifting hook body or take off from the lifting hook body, press the arc portion, make arc portion and connecting plate break away from the contact, the elastic component in the groove that slides this moment makes the fore-set slide in the groove that slides with the elastic restoring force of self, and gliding fore-set overcomes the elasticity that the elastic torsion component acted on the connecting plate, the one end that makes the connecting plate keep away from the elastic torsion component breaks away from the draw-in groove, be convenient for carry out subsequent operation, it is more convenient to make safety hook's use. Meanwhile, when the lifting hook body is in a self-locking state, the elastic part utilizes the elastic restoring force of the elastic part and enables the connecting plate to be tightly abutted against the arc-shaped part through the top column, and therefore the stability of the whole safety lifting hook in the self-locking state is greatly improved.
Furthermore, the top column penetrates through a waist-shaped hole along the sliding direction of the top column, a limiting column is arranged in the waist-shaped hole in a sliding mode, and the limiting column is fixed on the inner side wall of the sliding groove.
Through adopting above-mentioned technical scheme, spacing post is fixed on the inside wall of groove that slides, and when the fore-set slided in the groove that slides, waist shape hole on the fore-set took place relative slip with spacing post, and waist shape hole and spacing post mutually support, played good limiting displacement to the fore-set, not only played good guard action to the elastic component, can also prevent that the fore-set from breaking away from spacing groove, and then improved the whole stability in operation of safety hook greatly.
Furthermore, the one end that the pull-tab was kept away from to the connecting plate is provided with the recess, and the recess setting is kept away from the one end of elasticity torsion piece at the connecting plate, and is provided with the sand grip with the joint of recess looks adaptation in the draw-in groove.
Through adopting above-mentioned technical scheme, when safety lifting hook was in the auto-lock state, the connecting plate was tightly the butt in the draw-in groove, and recess on the connecting plate and the mutual joint of recess that the lifting hook body is located the draw-in groove, made the difficult production of draw-in groove in the connecting plate rock, and then improved safety lifting hook stability at the auto-lock in-process greatly, was favorable to avoiding the emergence of incident.
Furthermore, friction stripes are arranged on the inner arc side wall of the lifting hook body.
Through adopting above-mentioned technical scheme, when the suspender that bears the weight of the goods was located the lifting hook body, the friction stripe had improved the frictional force between suspender and lifting hook body, carries out high altitude safety work at safety lifting hook, and when the goods that the suspender bore takes place to acutely rock, the friction stripe made difficult emergence break away from between suspender and the lifting hook body, was favorable to preventing the production of unhook phenomenon, and had avoided the emergence of incident.
The second purpose of the invention is to provide an application method of the safety lifting hook, which can effectively avoid safety accidents and improve the construction efficiency when the method is used for operating the safety lifting hook.
In order to achieve the second purpose, the invention provides the following technical scheme, which comprises the following steps:
when the safety hook is in a self-locking state, one end of a connecting plate is clamped in a clamping groove, when the safety hook is applied, firstly, an arc-shaped part is pressed, a top column is popped out from a sliding groove, a convex strip is separated from a groove, and the connecting plate is positioned above the arc-shaped part;
secondly, operating the lifting ring, rotating the lifting ring, and enabling the lifting ring to slide in the limiting groove until the lifting ring is clamped in the elastic clamping ring;
thirdly, placing the sling for bearing the goods on the hook body, and rotating the lifting ring again to enable the lifting ring to be separated from the elastic clamping ring and slide in the limiting groove;
step four, when the connecting plate abuts against the arc-shaped part, the lifting ring continues to rotate, the arc-shaped part slides in the sliding groove at the moment, and when the connecting plate abuts against the top column, the lifting ring continues to rotate, and the top column slides in the sliding groove;
and step five, when the groove and the raised line on the connecting plate are mutually clamped, the arc-shaped part is popped out from the sliding groove and is abutted against the side wall of the connecting plate, and at the moment, one end of the connecting plate is completely clamped in the clamping groove to complete the self-locking of the safety lifting hook.
Through adopting above-mentioned technical scheme, when adopting above-mentioned operating procedure to operate safety lifting hook, not only can realize unblanking and the auto-lock of safety lifting hook fast, be favorable to improving the efficiency of construction, can also fully exert the effect of each part of safety lifting hook, make safety lifting hook's stability improve greatly, simultaneously, above-mentioned operation also is that safety lifting hook is difficult for taking place to damage, and has longer life.
Compared with the prior art, the invention has the beneficial effects that:
(1) the root of the lifting hook body is provided with the connecting plate in a rotating manner through the elastic torsion piece, so that when the safety lifting hook is in a self-locking state, the elastic torsion piece can enable the connecting plate to be tightly abutted against the hook tip part of the lifting hook body by utilizing the elastic restoring force of the elastic torsion piece, and when the lifting hook body shakes violently, one end of the connecting plate, far away from the elastic torsion piece, cannot be separated from the lifting hook body, so that a good and stable self-locking state can be maintained, the lifting belt is tightly arranged in the lifting hook, and safety accidents are not easy to cause;
(2) the arc-shaped part used for clamping the connecting plate is arranged in the clamping groove, the sliding groove is formed in the bottom of the clamping groove, the elastic connecting piece is arranged between the bottom of the sliding groove and the arc-shaped part in the sliding groove formed by the arc-shaped part in a sliding mode, when the safety lifting hook is in a self-locking state, the arc-shaped part abuts against the side wall of the connecting plate, the connecting plate is tightly fixed in the clamping groove, the stability of the safety lifting hook in the self-locking state is improved, the elastic connecting piece can play a reset role on the arc-shaped part by utilizing the elastic restoring force of the elastic connecting piece;
(3) through set up the groove of sliding on the hook point portion at the lifting hook body, it is provided with the fore-set to slide in the groove, and be provided with the elastic component between the bottom in groove of sliding and the fore-set, and when the connecting plate joint was in the draw-in groove, the one end of arc portion was kept away from at the connecting plate to the fore-set butt, the stability of safety lifting hook whole under auto-lock state has been improved greatly, and when arc portion and connecting plate break away from the contact, the fore-set made connecting plate was kept away from the one end of elastic torsion spare through the elastic component and is broken away from in the draw-in groove, be convenient for carry on.
Drawings
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2.
Reference numerals: 1. a hook body; 2. a sheave assembly; 3. an elastic torsion member; 4. a connecting plate; 5. lifting the ring; 6. a card slot; 7. an arc-shaped portion; 8. a chute; 9. an elastic connecting member; 10. a limiting block; 11. a limiting groove; 12. an elastic snap ring; 13. a sliding groove; 14. a top pillar; 15. an elastic member; 16. a waist-shaped hole; 17. a limiting column; 18. a convex strip; 19. a groove; 20. and rubbing the stripes.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1, a safety hook comprises a hook body 1, a pulley assembly 2 is arranged on the upper part of the hook body 1, the pulley assembly 2 comprises a fixed frame and a pulley installed in the fixed frame, and the fixed frame is fixed at the root of the hook body 1. The root of lifting hook body 1 rotates through elasticity torsion member 3 and is provided with connecting plate 4, and connecting plate 4 is the cuboid form, and the one end butt at lifting hook body 1's prong portion of elasticity torsion member 3 is kept away from to connecting plate 4, and preferred, elasticity torsion member 3 chooses for use the pivot of taking the torsional spring. The connecting plate 4 is welded with U-shaped lifting rings 5 along the two side walls of the length direction, the lifting rings 5 are arranged on one side, close to the lifting hook body 1, of the connecting plate 4, and the lifting rings 5 are further sleeved on the lifting hook body 1.
As shown in fig. 2 and 3, the root of the hook body 1 is fixedly provided with a limiting block 10, the limiting block 10 is integrally fan-shaped, and the limiting block 10 is symmetrically provided with limiting grooves 11. Two symmetrical opposite sides of the lifting ring 5 are positioned in the limiting groove 11, and the size of the limiting groove 11 is the size of the volume swept by the movement of the two opposite sides of the lifting ring 5. Meanwhile, the bottom of the limiting groove 11 is provided with an elastic clamping ring 12 which plays a role in clamping and fixing the lifting ring 5, the elastic clamping ring 12 is cylindrical, one side of the elastic clamping ring 12 is open and is communicated with the limiting groove 11, and preferably, the elastic clamping ring 12 is made of rubber.
The hook point portion of the lifting hook body 1 is provided with a clamping groove 6 used for clamping the connecting plate 4, the clamping groove 6 is arranged in a fan shape along the motion track of the connecting plate 4, and one end, far away from the elastic torsion piece 3, of the connecting plate 4 is arranged in the clamping groove 6 in a sliding mode. Be provided with the arc portion 7 that is used for joint connecting plate 4 in the draw-in groove 6, when connecting plate 4 joint was in draw-in groove 6, arc portion 7 butt was on the lateral wall of connecting plate 4, and the size of arc portion 7 and the size looks adaptation that draw-in groove 6 was vacant at this moment. And the bottom of draw-in groove 6 is provided with the spout 8 that is the cuboid form, and in the spout 8 that arc portion 7 slided and set up, and be provided with elastic connection 9 between the bottom of spout 8 and arc portion 7, preferred, elastic connection chooses for use the spring.
The hook point portion of the lifting hook body 1 is provided with a sliding groove 13, the sliding groove 13 is in a cylindrical shape, and a cylindrical ejection column 14 is arranged in the sliding groove 13 in a sliding mode. The end of the top pillar 14 far away from the bottom of the sliding groove 13 is hemispherical, the top pillar 14 is arranged in the clamping groove 6, and when the connecting plate 4 is clamped in the clamping groove 6, the top pillar 14 abuts against the end of the connecting plate 4 far away from the arc-shaped part 7. Meanwhile, the sliding groove 13 is arranged through the convex strip 18, and an elastic part 15 is arranged between the bottom of the sliding groove 13 and the top column 14, preferably, the elastic connecting part 9 is a spring.
The top column 14 is provided with a waist-shaped hole 16 along the sliding direction, the waist-shaped hole 16 is arranged in the middle of the top column 14, and a cylindrical limiting column 17 is arranged in the waist-shaped hole 16 in a sliding mode. The length direction of the limiting column 17 is perpendicular to the length direction of the waist-shaped hole 16, and two ends of the limiting column 17 along the length direction are fixedly arranged on the inner side wall of the sliding groove 13.
One end of the connecting plate 4, which is far away from the lifting ring 5, is provided with a semi-cylindrical groove 19, the groove 19 is arranged at one end of the connecting plate 4, which is far away from the elastic torsion piece 3, and a raised line 18 which is in adaptive joint with the groove 19 is arranged in the clamping groove 6. Be provided with friction stripe 20 on the inner arc lateral wall of lifting hook body 1, friction stripe 20 is the arc arch, and evenly distributed is on lifting hook body 1.
The embodiment is further described below with reference to an application method, and the application method of the safety hook specifically includes the following steps:
when the safety hook is in a self-locking state, one end of a connecting plate is clamped in a clamping groove, when the safety hook is applied, firstly, an arc-shaped part is pressed, a top column is popped out from a sliding groove, a convex strip is separated from a groove, and the connecting plate is positioned above the arc-shaped part;
secondly, operating the lifting ring, rotating the lifting ring, and enabling the lifting ring to slide in the limiting groove until the lifting ring is clamped in the elastic clamping ring;
thirdly, placing the sling for bearing the goods on the hook body, and rotating the lifting ring again to enable the lifting ring to be separated from the elastic clamping ring and slide in the limiting groove;
step four, when the connecting plate abuts against the arc-shaped part, the lifting ring continues to rotate, the arc-shaped part slides in the sliding groove at the moment, and when the connecting plate abuts against the top column, the lifting ring continues to rotate, and the top column slides in the sliding groove;
and step five, when the groove and the raised line on the connecting plate are mutually clamped, the arc-shaped part is popped out from the sliding groove and is abutted against the side wall of the connecting plate, and at the moment, one end of the connecting plate is completely clamped in the clamping groove to complete the self-locking of the safety lifting hook.
The working process and the beneficial effects of the invention are as follows:
when the safety hook is in a self-locking state, one end of the connecting plate 4 is clamped in the clamping groove 6, and when the safety hook is applied, the arc-shaped part 7 is pressed, the top column 14 is popped out from the sliding groove 13, so that the convex strip 18 is separated from the groove 19, and the connecting plate 4 is separated from the clamping groove 6; then the lifting ring 5 is rotated until the lifting ring 5 is clamped in the elastic snap ring 12; placing a sling for bearing goods on the lifting hook body 1, and rotating the lifting ring 5 again to enable the lifting ring 5 to be separated from the elastic clamping ring 12 and slide in the limiting groove 11; one end of the connecting plate 4 is completely clamped in the clamping groove 6, and the self-locking of the safety lifting hook is completed. So set up, elastic torsion member 3 can utilize the elastic restoring force of self to make connecting plate 4 tightly butt in draw-in groove 6, and when lifting hook body 1 is taking place acutely to rock, connecting plate 4 is difficult just takes place to break away from with the card, and then can maintain good stable auto-lock state, makes the suspender tightly be in the lifting hook, is difficult for causing the incident, and whole has good application nature.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (2)
1. A safety lifting hook comprises a lifting hook body (1), wherein a pulley assembly (2) is arranged at the upper part of the lifting hook body (1), and is characterized in that a connecting plate (4) is rotatably arranged at the root part of the lifting hook body (1) through an elastic torsion piece (3), one end, far away from the elastic torsion piece (3), of the connecting plate (4) abuts against the hook tip part of the lifting hook body (1), a lifting ring (5) is arranged on the connecting plate (4), and the lifting ring (5) is sleeved on the lifting hook body (1); a clamping groove (6) used for clamping the connecting plate (4) is formed in the hook tip of the lifting hook body (1), and one end, far away from the elastic torsion piece (3), of the connecting plate (4) is arranged in the clamping groove (6) in a sliding mode; an arc-shaped part (7) used for clamping the connecting plate (4) is arranged in the clamping groove (6), and when the connecting plate (4) is clamped in the clamping groove (6), the arc-shaped part (7) abuts against the side wall of the connecting plate (4); a sliding groove (8) is formed in the bottom of the clamping groove (6), the arc-shaped portion (7) is arranged in the sliding groove (8) in a sliding mode, and an elastic connecting piece (9) is arranged between the bottom of the sliding groove (8) and the arc-shaped portion (7); the root of the lifting hook body (1) is provided with a limiting block (10), the limiting block (10) is provided with a limiting groove (11) which has a limiting effect on the lifting ring (5), and the lifting ring (5) is arranged in the limiting groove (11) in a sliding manner; the bottom of the limiting groove (11) is provided with an elastic snap ring (12) which plays a role in clamping and fixing the lifting ring (5); a sliding groove (13) is formed in the hook tip portion of the lifting hook body (1), a top column (14) is arranged in the sliding groove (13) in a sliding mode, the top column (14) is arranged in the clamping groove (6), an elastic piece (15) is arranged between the bottom of the sliding groove (13) and the top column (14), and when the connecting plate (4) is clamped in the clamping groove (6), the top column (14) abuts against one end, far away from the arc-shaped portion (7), of the connecting plate (4); the top column (14) is provided with a waist-shaped hole (16) in a penetrating manner along the sliding direction of the top column, a limiting column (17) is arranged in the waist-shaped hole (16) in a sliding manner, and the limiting column (17) is fixed on the inner side wall of the sliding groove (13);
the application method comprises the following steps that firstly, when the safety hook is in a self-locking state, one end of the connecting plate (4) is clamped in the clamping groove (6), when the safety hook is applied, the arc-shaped part (7) is pressed, the top column (14) is popped out from the sliding groove (13), the convex strip (18) is separated from the groove (19), and the connecting plate (4) is positioned above the arc-shaped part (7); a groove (19) is formed in one end, far away from the lifting ring (5), of the connecting plate (4), the groove (19) is formed in one end, far away from the elastic torsion piece (3), of the connecting plate (4), and a convex strip (18) matched and clamped with the groove (19) is arranged in the clamping groove (6);
secondly, operating the lifting ring (5), rotating the lifting ring (5), and enabling the lifting ring (5) to slide in the limiting groove (11) until the lifting ring (5) is clamped in the elastic clamping ring (12);
thirdly, placing the sling carrying the goods on the hook body (1), and rotating the lifting ring (5) again to enable the lifting ring (5) to be separated from the elastic clamping ring (12) and slide in the limiting groove (11);
step four, when the connecting plate (4) abuts against the arc-shaped part (7), the lifting ring (5) continues to rotate, at the moment, the arc-shaped part (7) slides in the sliding groove (8), when the connecting plate (4) abuts against the top column (14), the lifting ring (5) continues to rotate, and the top column (14) slides in the sliding groove (13);
step five, when the groove (19) on the connecting plate (4) is clamped with the convex strip (18) mutually, the arc-shaped part (7) is popped out from the sliding groove (8) and is abutted against the side wall of the connecting plate (4), and at the moment, one end of the connecting plate (4) is completely clamped in the clamping groove (6), so that the self-locking of the safety lifting hook is completed.
2. A safety hook as claimed in claim 1, characterised in that the hook body (1) is provided with friction strips (20) on its inner arc side walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910818688.7A CN110642141B (en) | 2019-08-30 | 2019-08-30 | Safety lifting hook and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910818688.7A CN110642141B (en) | 2019-08-30 | 2019-08-30 | Safety lifting hook and application method thereof |
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| CN110642141A CN110642141A (en) | 2020-01-03 |
| CN110642141B true CN110642141B (en) | 2020-12-25 |
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| US283464A (en) * | 1883-08-21 | bbowf | ||
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| CN206872279U (en) * | 2017-07-07 | 2018-01-12 | 唐志赏 | A kind of hook drop-proof hook device of New crane machinery suspension hook |
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| CN208120561U (en) * | 2018-04-26 | 2018-11-20 | 朱胜凡 | A kind of crane Anti-slip lifting hook |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110642141A (en) | 2020-01-03 |
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Denomination of invention: A safety hook and its application Effective date of registration: 20220616 Granted publication date: 20201225 Pledgee: Shanghai Rural Commercial Bank Co.,Ltd. Jinshan sub branch Pledgor: Shanghai Jufeng Hot Galvanizing Co.,Ltd. Registration number: Y2022310000062 |