CN203006746U

CN203006746U - Side locking type safety lifting hook

Info

Publication number: CN203006746U
Application number: CN 201320024359
Authority: CN
Inventors: 廉明辉; 仇恒臣; 张来星; 张科; 秦威; 陈莹
Original assignee: SHANDONG SHENLI RIGGING CO Ltd
Current assignee: SHANDONG SHENLI RIGGING CO Ltd
Priority date: 2013-01-17
Filing date: 2013-01-17
Publication date: 2013-06-19
Anticipated expiration: 2023-01-17

Abstract

The utility model provides a side locking type safety lifting hook which is high in safety. The side locking type safety lifting hook comprises a lifting hook body, a spring bolt and a first pin shaft. The upper end of the lifting hook body is a fork-shaped portion, the middle portion of the spring bolt is supported between two fork arms at the upper end of the lifting hook body in a rotary mode through the first pin shaft, the upper end of the spring bolt is a connection portion which is connected with a lifting device, a penetrating hole is formed in the lifting hook body below the first pin shaft, and the penetrating direction of the penetrating hole is consistent with the direction of an axis of the first pin shaft. The upper end of the penetrating hole is communicated with a clamped space of the two fork arms, a locking mechanism is arranged in the penetrating hole, and when the spring bolt is positioned at the closed position, the locking mechanism limits rotating of the spring bolt and prevents a hook opening from being opened. The penetrating hole is formed in the lifting hook body, the upper end of the penetrating hole is communicated with the clamped space of the two fork arms of the upper end of the lifting hook body, the locking mechanism is arranged in the penetrating hole, when the spring bolt anticlockwise rotates to the closed position, the locking mechanism limits rotation of the spring bolt and locks the spring bolt, the spring bolt is prevented from rotating to open the hook opening, and an unsafe factor is removed.

Description

A kind of side locking type safety hook

Technical field

The utility model is related to a kind of crampon, and in particular to a kind of side locking type safety hook.

Background technology

Fig. 1 shows a kind of safety hook of the prior art, and it, which includes being formed by bearing pin and hook upper end in the middle part of hook 1, dead bolt 2 and bearing pin 3, dead bolt, rotates connection.The connecting portion 4 that dead bolt upper end is and jack up unit is connected, in the case of bearing a heavy burden, dead bolt lower end is resisted against hook tail end, so as to close the mouth of hook, occurs to prevent locking hook phenomenon.But only the mouth of hook is just under closed state, the small loading conditions, non-weight bearing state or other situations in hoisting process the safety hook of this structure in the case of bearing a heavy burden, dead bolt opens the mouth of hook, there is unsafe factor possibly off closing position.

The content of the invention

The technical problems to be solved in the utility model is to provide a kind of higher side locking type safety hook of security.

In order to solve the above-mentioned technical problem, the technical solution of the utility model is：

A kind of side locking type safety hook, including hook, dead bolt and bearing pin I, hook upper end is fork, in the middle part of dead bolt by the rotational support of bearing pin I between the yoke of hook upper end two, dead bolt upper end is the connecting portion being connected with lifting device, through hole is provided with the hook of the lower section of bearing pin I, it is consistent with the axis direction of bearing pin I through direction, through hole upper end is connected with two yoke grasping parts, is set in through hole when dead bolt time limit lockmaking tongue in the close position is rotated to prevent the locking mechanism of mouth of hook opening.

Above-mentioned safety hook, the locking mechanism include block, torsionspring and through hole in across pin shaft II, pin shaft II and the axis of bearing pin I are vertical and are integrally located in the section of hook one, block is by torsionspring rotational support in pin shaft II, block is located in the through hole above pin shaft II, there is the locked groove for setting and matching with block on press section, dead bolt, position of the locked groove on dead bolt is on block：When dead bolt is in the close position, block just enters in dead bolt locked groove under the driving of torsionspring, presses the press section of block, and block can depart from dead bolt locked groove.

Above-mentioned safety hook, the surface of the block press section sets annular knurl.

Above-mentioned safety hook, the connecting portion of dead bolt is in integrally fork-shaped, pin-and-hole I is set on two yokes, pin shaft III both ends are respectively in the pin-and-hole I of yoke, the bottom at pin shaft III both ends is respectively provided with semicircle keyway, the pin-and-hole II by the bottom hole of pin-and-hole I is provided with two yokes, pin-and-hole II and pin-and-hole I are vertical, and elastic cylindrical pin is located in pin-and-hole II and semicircle keyway.

Above-mentioned safety hook, pin shaft III section ovalize.

Through hole is opened up in hook, through hole upper end is connected with the yoke grasping part of hook upper end two, locking mechanism is set in through hole, when dead bolt rotates counterclockwise arrival closing position, locking mechanism limitation dead bolt is rotated, by dead bolt locking, it is to avoid dead bolt rotates to open the mouth of hook, eliminates unsafe factor.

Brief description of the drawings

Embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings：

Fig. 1 is the structural representation of existing safety hook.

Fig. 2 is structural representation of the present utility model.

Fig. 3 is the structural representation of dead bolt.

Fig. 4 is the structural representation of pin shaft III.

Fig. 5 is Fig. 4 left view.

Fig. 6 is the structural representation of hook.

Fig. 7 is Fig. 6 left view.

Fig. 8 is lifting schematic diagram.

Fig. 9 is the structural representation of locking mechanism.

Figure 10 is the structural representation of block.

In figure：1 hook, 2 dead bolts, 3 bearing pins I, 4 connecting portions, 5 pin shaft IIIs, 6 locking mechanisms, 7 elastic cylindrical pins, 8 semicircle keyways, 9 through holes, 10 pin-and-holes III, 11 jack up units, 12 pin shaft IIs, 13 torsionsprings, 14 blocks, 15 locked grooves, 16 pin-and-holes I.

Embodiment

As illustrated in figs. 2 through 8, safety hook includes hook 1, dead bolt 2 and bearing pin I 3.Hook upper end is fork, and dead bolt middle part is by the rotational support of bearing pin I between the yoke of hook upper end two.Dead bolt upper end is the connecting portion 4 being connected with jack up unit 11.Through hole 9 is provided with the hook of the lower section of bearing pin I, it is consistent with the axis direction of bearing pin I through direction.Through hole upper end is connected with two yoke grasping parts, is set in through hole when dead bolt time limit lockmaking tongue in the close position is rotated to prevent the locking mechanism 6 of mouth of hook opening.

Specifically, the locking mechanism include block 14, torsionspring 13 and through hole in across pin shaft II 12.The pin-and-hole III 10 of pin shaft II is shown in Fig. 6.Pin shaft II and the axis of bearing pin I are vertically and pin shaft II is integrally located in the same section of hook.Block is by torsionspring rotational support in pin shaft II, and block is located in the through hole above pin shaft II, has press section on block.The locked groove 15 matched with block is set on dead bolt.Position of the locked groove on dead bolt is：When dead bolt is in the close position, block just enters in dead bolt locked groove under the driving of torsionspring, presses the press section of block, and block can depart from dead bolt locked groove.

When dead bolt is not in closing position, block is leaned against on dead bolt in next direct reach of elastic force of torsionspring, dead bolt is rotated counterclockwise, when dead bolt is in the close position, block just enters in dead bolt locked groove under the driving of torsionspring, and limitation dead bolt is rotated, by dead bolt locking, avoid dead bolt from rotating to open the mouth of hook, eliminate unsafe factor.When needing to open the mouth of hook, the press section of block is pressed, block removes dead bolt locked groove, releases lockup state.

When the mouth of hook is opened, lockup state need to be released manually, and for the ease of pressing, the surface of the block press section sets annular knurl, as shown in Figure 10.

The connecting portion of dead bolt is in integrally that pin-and-hole I 16 is set on fork-shaped, two yokes, and the both ends of pin shaft III 5 are respectively in the pin-and-hole I of yoke.The bottom at pin shaft III both ends is respectively provided with the pin-and-hole II being provided with semicircle keyway 8, two yokes by the bottom hole of pin-and-hole I, and pin-and-hole II and pin-and-hole I are vertical, and elastic cylindrical pin 7 is located in pin-and-hole II and semicircle keyway, plays the effect spacing to pin shaft III.

Specifically, pin shaft III section ovalize.

Claims

1. a kind of side locking type safety hook, including hook, dead bolt and bearing pin I, hook upper end are that by the rotational support of bearing pin I between the yoke of hook upper end two, dead bolt upper end is the connecting portion being connected with lifting device in the middle part of fork, dead bolt, it is characterised in that：Through hole is provided with the hook of the lower section of bearing pin I, it is consistent with the axis direction of bearing pin I through direction, through hole upper end is connected with two yoke grasping parts, is set in through hole when dead bolt time limit lockmaking tongue in the close position is rotated to prevent the locking mechanism of mouth of hook opening.

2. safety hook according to claim 1, it is characterised in that：The locking mechanism include block, torsionspring and through hole in across pin shaft II, pin shaft II and the axis of bearing pin I are vertical and are integrally located in the section of hook one, block is by torsionspring rotational support in pin shaft II, block is located in the through hole above pin shaft II, there is press section on block, the locked groove matched with block is set on dead bolt, and position of the locked groove on dead bolt is：When dead bolt is in the close position, block just enters in dead bolt locked groove under the driving of torsionspring, presses the press section of block, and block can depart from dead bolt locked groove.

3. safety hook according to claim 1 or 2, it is characterised in that：The surface of the block press section sets annular knurl.

4. safety hook according to claim 1 or 2, it is characterised in that：The connecting portion of dead bolt is in integrally fork-shaped, pin-and-hole I is set on two yokes, pin shaft III both ends are respectively in the pin-and-hole I of yoke, the bottom at pin shaft III both ends is respectively provided with semicircle keyway, the pin-and-hole II by the bottom hole of pin-and-hole I is provided with two yokes, pin-and-hole II and pin-and-hole I are vertical, and elastic cylindrical pin is located in pin-and-hole II and semicircle keyway.

5. safety hook according to claim 4, it is characterised in that：Pin shaft III section ovalize.