CN115924717A - Self-releasing hook - Google Patents

Abstract

The invention discloses a self-releasing hook which comprises a hanging rod, a connecting block, a fixed cylinder and a main hook, wherein the connecting block is fixed at the top of the fixed cylinder, the hanging rod is connected with the connecting block, the top end of the main hook extends into the fixed cylinder, a bearing pin is arranged between the main hook and the fixed cylinder, a torsion spring is arranged between the bearing pin and the main hook, and the torsion spring enables the main hook to rotate towards an opening direction.

Description

Self-releasing hook

Technical Field

The invention belongs to the technical field of auxiliary equipment for installing a switch cabinet, and particularly relates to a self-disengaging hook.

Background

At present, power equipment develops towards miniaturization and intellectualization, and the problems of complex working procedure, compact space, complex model, large labor input and the like in the assembly work are increasingly prominent. With the increasing expansion of the power grid scale and the annual increase of labor cost, the requirement of modern power grid construction is more and more difficult to meet by manually installing power equipment.

Some cubical switchboard adopt the hoist and mount mode to carry the installation, adopt the couple to hook the rings transport of cubical switchboard top during hoist and mount, need the manual work to take off the couple to the cubical switchboard top after finishing, comparatively troublesome, it is inefficient.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a lifting hook which can realize the automatic separation of a main hook and a lifting ring after a switch cabinet is carried to a specified position without manual intervention.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a from couple that takes off, includes jib, connecting block, solid fixed cylinder and main hook, and the connecting block is fixed in the top of solid fixed cylinder, and the jib is connected with the connecting block, the top of main hook stretches into to solid fixed cylinder in, and is provided with the bearing pin between main hook and the solid fixed cylinder, be provided with the torsional spring between bearing pin and the main hook, the torsional spring makes the main hook rotate to opening the direction.

Further the jib passes in connecting block to the solid fixed cylinder, and the jib stretches into the one end in the solid fixed cylinder and is provided with the anticreep head, jib and connecting block along vertical direction sliding connection, be provided with insurance fastener in the solid fixed cylinder, insurance fastener is connected with retaining spring, and retaining spring makes insurance fastener upward movement, the top of insurance fastener is supported at the anticreep overhead, correspond in the solid fixed cylinder and be provided with the insurance jack catch between insurance fastener and the main hook, when the main hook is closed the insurance jack catch prevents the main hook to rotate to the direction of opening.

Further be provided with the round pin axle between insurance jack catch and the solid fixed cylinder, be provided with the backstop on the main hook, when the main hook is closed the one end of insurance jack catch is supported on the backstop, and the other end and the insurance fastener of insurance jack catch are connected.

Furthermore, a positioning groove is formed in the safety fastener, and the end part of the safety clamping jaw extends into the positioning groove.

Furthermore, the safety fastener is n-shaped, and the positioning groove is provided with the side surface of the safety fastener.

Further be provided with the bearing support in the fixed cylinder, the bearing support is "n" shape, and forms the guide way between the fixed cylinder, the side of insurance fastener stretches into to the guide way in.

And further, a limiting bulge is arranged on the side surface of the main hook, and when the main hook is opened, the limiting bulge is abutted to the fixed cylinder.

Compared with the prior art, the invention has the beneficial effects that: the device is matched with a forklift, and after the switch cabinet is placed, the device does not need to be manually disassembled, so that automatic unhooking can be realized; in the hoisting and transferring process, the main hook can be prevented from being opened under the action of the safety clamping jaws, so that unhooking is prevented, and the safety is higher.

Drawings

Fig. 1 is a three-dimensional structure view of a switch cabinet hoisting device;

FIG. 2 is a perspective view of the self-releasing hook;

FIG. 3 is a cross-sectional view of the self-disengaging hook (when closed);

FIG. 4 is an enlarged view of the safety fastener of the present invention

Fig. 5 is a cross-sectional view of the self-releasing hook (when opened).

Reference numerals: 1. an upper beam; 11. a longitudinal beam; 12. a cross beam; 121. an opening; 2. the hook is automatically taken off; 21. a boom; 211. the head is prevented from falling off; 212. a lock nut; 22. a fixed cylinder; 23. a main hook; 231. a stop block; 232. a limiting bulge; 24. a safety fastener; 241. positioning a groove; 25. a safety jaw; 26. a torsion spring; 27. a compression spring; 28. a load bearing support; 29. connecting blocks; 3. a lifting ring.

Detailed Description

Embodiments of the self-disengaging hook of the present invention are further described with reference to fig. 1-5.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate that the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a number" or "a number" means two or more unless explicitly specified otherwise.

The utility model provides a cubical switchboard hoist device, is including hoist and mount upper beam 1 and a plurality of couple, be provided with on the upper beam 1 with fork truck's fork complex opening 121, the couple is for taking off the couple 2 certainly, takes off the couple 2 certainly and is fixed in the 1 below of upper beam.

In practical application, a plurality of hanging rings 3 are arranged on the top of the switch cabinet and used for being matched with the self-disengaging hook 2.

The preferred upper beam 1 of this embodiment includes a cross beam 12 and a longitudinal beam 11, the cross beam 12 and the longitudinal beam 11 are fixedly connected to each other, the opening 121 is located on the cross beam 12, and the self-releasing hook 2 is fixed on the longitudinal beam 11.

As shown in fig. 1, in the present embodiment, two cross beams 12 and two longitudinal beams 11 are respectively provided, the cross beams 12 and the longitudinal beams 11 are locked with each other by fasteners, wherein the openings 121 penetrate through the cross beams 12, and when the fork of the forklift is inserted, the upper beam 1 can keep stable relative to the fork.

Wherein, the beam 12 is provided with a strip-shaped groove, and the transverse position of the longitudinal beam 11 can be controlled by adjusting the connecting position of the longitudinal beam 11 and the beam 12.

As shown in fig. 1, a strip-shaped groove is formed in the longitudinal beam 11, the self-releasing hook 2 includes a suspension rod 21, the suspension rod 21 passes through the strip-shaped groove, two sets of locking nuts 212 are connected to the suspension rod 21 through threads, and the two sets of locking nuts 212 are located on the upper and lower sides of the longitudinal beam 11.

Can adjust the position of taking off couple 2 through the bar groove, control the longitudinal position of taking off couple 2 promptly, combine longeron 11 position on crossbeam 12, can control the position on the horizontal plane of taking off couple 2 to guarantee that a plurality of take off couple 2 can hook rings 3 simultaneously.

In an embodiment, preferably, the self-releasing hook 2 further includes a connecting block 29, a fixed cylinder 22 and a main hook 23, the connecting block 29 is fixed on the top of the fixed cylinder 22, the suspension rod 21 is connected with the connecting block 29, the top end of the main hook 23 extends into the fixed cylinder 22, a bearing pin is arranged between the main hook 23 and the fixed cylinder 22, a torsion spring 26 is arranged between the bearing pin and the main hook 23, and the torsion spring 26 enables the main hook 23 to rotate towards the opening direction.

Torsion spring 26 in this embodiment is preferably a double torsion spring.

The opening direction of the main hook 23 is the direction in which the main hook 23 can be disengaged from the hoist ring 3, whereas the closing direction of the main hook 23 is opposite.

When the forklift is used, the upper beam 1 is matched and fixed with a fork of a forklift, the whole upper beam 1 moves to the position above a switch cabinet to be carried, the main hook 23 is hooked on the hanging ring 3, then the fork moves upwards, the main hook 23 completely hooks the hanging ring 3 under the action of gravity of the switch cabinet, after the switch cabinet reaches a specified position, the fork moves downwards, the switch cabinet is placed on the ground, the fork moves downwards continuously, the main hook 23 moves downwards in the hanging ring 3 at the moment, the main hook 23 is not limited by the hanging ring 3, the main hook 23 rotates towards the opening direction under the action of the torsion spring 26, the forklift moves along the direction opposite to the opening 121 of the main hook 23 to withdraw from the main hook 23, the self-unhooking function is realized, and manual intervention is not needed.

The preferred jib 21 of this embodiment passes in connecting block 29 to the fixed cylinder 22, and the one end that jib 21 stretched into in the fixed cylinder 22 is provided with anticreep head 211, jib 21 and connecting block 29 along vertical direction sliding connection, be provided with insurance fastener 24 in the fixed cylinder 22, insurance fastener 24 is connected with the retaining spring, and the retaining spring makes insurance fastener 24 upward movement, the top of insurance fastener 24 supports on anticreep head 211, be provided with insurance jack catch 25 in the fixed cylinder 22 between corresponding insurance fastener 24 and the main hook 23, when the main hook 23 was closed insurance jack catch 25 prevents the main hook 23 to open the direction and rotates.

A pin shaft is arranged between the safety jaw 25 and the fixed cylinder 22, a stop block 231 is arranged on the main hook 23, one end of the safety jaw 25 abuts against the stop block 231 when the main hook 23 is closed, and the other end of the safety jaw 25 is connected with the safety fastener 24.

As shown in fig. 3, in order to completely close the opening 121 side of the main hook 23 when the main hook 23 is in the closed state, it is preferable that the side of the fixed cylinder 22 corresponding to the opening 121 of the main hook 23 extends downward, and when the main hook 23 is closed, the opening 121 is blocked by the side wall of the fixed cylinder 22.

As shown in fig. 4, for clearly understanding the present invention, one end of the safety catch 25 facing the stop block 231 is called a passive end, and the other end is called an active end, wherein the retaining spring keeps the fastener at the top, so that under the action of the lever, the active end of the safety catch 25 is pulled upwards, the passive end is pressed downwards, and the passive end abuts against the stop block 231, and at this time, even if no heavy hanging ring 3 is pulled below the main hook 23, the hanging ring 23 cannot rotate in the opening direction (clockwise), that is, it is ensured that the main hook 23 and the hanging ring 3 are always in a mutually hooked state and the hanging ring 3 cannot be taken off during the transportation process of the switch cabinet;

after the switch cabinet is put down, as the upper beam 1 continues to descend, the main hook 23 or other components are abutted against the hanging ring 3 or the switch cabinet, the suspension rod 21 further extends into the fixed cylinder 22, the anti-drop head 211 presses the safety fastener 24 downwards to overcome the acting force of the retaining spring, the safety fastener 24 moves downwards as shown in fig. 5, the driving end of the safety claw 25 swings downwards, the driven end of the safety claw 25 swings upwards to be separated from the stop block 231, at this time, the main hook 23 does not have the effect of the safety claw 25, and rotates towards the opening direction (clockwise) under the effect of the torsion spring 26 to separate the hanging ring 3, and the unhooking is completed.

When the main hook 23 is closed again, as long as the upper beam 1 is lifted, the safety catch 24 moves upward and returns, and after the main hook 23 rotates in the closing direction, the safety catch 25 abuts against the stopper 231 again.

In this embodiment, a positioning groove 241 is preferably formed on the safety fastener 24, and an end of the safety catch 25 extends into the positioning groove 241.

The driving end of the safety catch 25 extends into the positioning groove 241, and the positioning groove 241 only limits the position of the safety catch 25 in the vertical direction, i.e. it is ensured that the safety fastener 24 can drive the safety catch 25 to rotate around the pin shaft in the up-and-down moving process.

As shown in fig. 3, the safety fastener 24 is n-shaped, and the positioning groove 241 is opened on the side of the safety fastener 24.

The side surface of the safety catch 24 substantially abuts against the inner wall of the fixed cylinder 22, and the movement of the safety catch 24 is restricted by the inner wall of the fixed cylinder 22 to prevent the inclination thereof.

In one embodiment, a bearing bracket 28 is arranged in the fixed cylinder 22, the bearing bracket 28 is n-shaped, a guide groove is formed between the bearing bracket 28 and the fixed cylinder 22, and the side surface of the safety fastener 24 extends into the guide groove.

The bearing bracket 28 and the fixing cylinder 22 are completely fixed, the bearing pin can simultaneously penetrate through the bearing bracket 28 and the fixing cylinder 22, the further retaining spring can be a compression spring 27, one end of the compression spring is abutted above the bearing bracket 28, the other end of the compression spring is abutted below the safety catch 24, in order to keep the safety catch 24 stably moving, a guide column is preferably arranged at the top of the bearing bracket 28, the compression spring 27 is sleeved on the guide column, a guide hole is formed in the safety catch 24, and the guide column penetrates through the guide hole.

Wherein the load bearing bracket 28 can also be considered as integral with the stationary canister 22.

In the preferred embodiment, a limiting protrusion 232 is disposed on a side surface of the main hook 23, and the limiting protrusion 232 abuts against the fixed cylinder 22 when the main hook 23 is opened.

The maximum angle at which the main hook 23 is opened can be limited by the limit projection 232.

The invention can also be combined with the prior application, china patent with publication number CN114675637A to realize the automatic transfer and transportation work of the switch cabinet.

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 adaptations to those skilled in the art without departing from the principles of the present invention should also be considered as within the scope of the present invention.

Claims (7)

1. A self-releasing hook is characterized in that: including jib, connecting block, solid fixed cylinder and main hook, the connecting block is fixed in the top of solid fixed cylinder, and the jib is connected with the connecting block, the top of main hook stretches into to solid fixed cylinder in, and is provided with the bearing pin between main hook and the solid fixed cylinder, be provided with the torsional spring between bearing pin and the main hook, the torsional spring makes the main hook rotate to opening the direction.

2. The self-disengaging hook according to claim 1, wherein: the jib passes in connecting block to the solid fixed cylinder, and the jib stretches into the one end in the solid fixed cylinder and is provided with the anticreep head, jib and connecting block along vertical direction sliding connection, be provided with insurance fastener in the solid fixed cylinder, insurance fastener is connected with retaining spring, and retaining spring makes insurance fastener upward movement, the top of insurance fastener is supported overhead at the anticreep, correspond in the solid fixed cylinder and be provided with the insurance jack catch between insurance fastener and the main hook, when the main hook is closed the insurance jack catch prevents the main hook to open the direction and rotates.

3. The self-disengaging hook according to claim 2, wherein: a pin shaft is arranged between the safety clamping jaw and the fixed cylinder, a stop block is arranged on the main hook, one end of the safety clamping jaw abuts against the stop block when the main hook is closed, and the other end of the safety clamping jaw is connected with the safety fastener.

4. The self-disengaging hook according to claim 3, wherein: the safety fastener is provided with a positioning groove, and the end part of the safety clamping jaw extends into the positioning groove.

5. The self-disengaging hook according to claim 4, wherein: the safety fastener is n-shaped, and the side face of the safety fastener is arranged on the positioning groove.

6. The self-disengaging hook according to claim 5, wherein: the safety fastener is characterized in that a bearing support is arranged in the fixed cylinder, the bearing support is n-shaped, a guide groove is formed between the bearing support and the fixed cylinder, and the side face of the safety fastener extends into the guide groove.

7. The self-disengaging hook according to claim 6, wherein: the side of the main hook is provided with a limiting bulge, and the limiting bulge abuts against the fixed cylinder when the main hook is opened.

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