CN210914980U - Special lifting hook for laminated slab - Google Patents

Abstract

The utility model discloses a superimposed sheet's special lifting hook, including first hook arm, second hook arm and spring, first hook arm upper end is equipped with first hole for hoist, first hook arm lower extreme is equipped with first claw of colluding, second hook arm upper end is equipped with the second hole for hoist, second hook arm lower extreme is equipped with the second claw of colluding, first hole for hoist and second hole for hoist articulate to be connected, first claw of colluding is colluded in the second inside the claw, and first claw of colluding down the terminal surface colludes claw up end with the second and laminates mutually, the spring sets up inside the lifting hook, and the spring is in tensile state when the lifting hook is closed, spring one end and first hook arm inside wall fixed connection, the spring other end and second hook arm inside wall fixed connection. This lifting hook passes through the taut closure of spring, and during closed first colludes under the claw terminal surface and the second colludes the claw up end and laminates mutually to effectively prevent that first colluding under the claw terminal surface and the second from colluding and producing the gap between the claw up end, thereby improved the joint or the uninstallation efficiency of reinforcing bar on this lifting hook and the superimposed sheet, guaranteed the hoist and mount drawing of patterns efficiency of superimposed sheet.

Description

Special lifting hook for laminated slab

Technical Field

The utility model relates to a lifting device technical field, concretely relates to superimposed sheet's special lifting hook.

Background

The laminated slab is an assembled integral floor slab formed by laminating prefabricated slabs and cast-in-place reinforced concrete, has good integrity, smooth upper and lower surfaces, is convenient for finishing a veneer layer, and is suitable for buildings with higher requirements on integral rigidity. The laminated slab is formed by pouring on a mold table, and the manufactured laminated slab needs to be lifted and demoulded from the mold table. In the process of hoisting and demoulding the laminated slab, a hoisting machine, a hoisting rope and a hoisting hook are needed. The lifting hook is a transition connecting piece of the lifting rope and the laminated slab, and one end of the lifting hook is fixedly connected with the other end of the lifting rope and connected with a steel bar on the laminated slab in a clamping mode when the lifting hook is used. A lifting hook that is used for hoisting superimposed sheet among the prior art is mostly elastic lifting hook (see fig. 1), and this elastic lifting hook includes rings (A), coupler body (B) and shell fragment (C), realizes the joint or the unhook of reinforcing bar on elastic lifting hook and the superimposed sheet through opening and shutting of shell fragment (C) and coupler body (B) outer fringe promptly. The elastic sheet (C) is a vulnerable part, and although the use of the elastic sheet (C) is not affected after the elastic sheet (C) is damaged, the following two problems exist: (1) after an operator clamps the hook body (B) of the lifting hook on the steel bar of the laminated slab, a gap is easily generated between the elastic sheet (C) and the outer edge of the hook body (B) because the lifting hook is in a shaking state, namely the steel bar of the laminated slab is easily slipped from the gap between the elastic sheet (C) and the outer edge of the hook body (B) to cause unhooking; (2) when the superimposed sheet hoists the drawing of patterns and places in the assigned position from the die bench, because the lifting hook is in and rocks the state, lead to shell fragment (C) and coupler body (B) outer fringe to produce the gap easily, superimposed sheet reinforcing bar gets into coupler body (B) inside again in the gap between shell fragment (C) and coupler body (B) outer fringe that rocks easily promptly, causes the secondary hook lock of reinforcing bar on this lifting hook and the superimposed sheet. The existence of above two kinds of problems has seriously influenced superimposed sheet's whole hoist and mount drawing of patterns efficiency, consequently it is necessary to design a section and is exclusively used in the lifting hook of superimposed sheet hoist and mount.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, a superimposed sheet's special lifting hook is provided, the first hook arm and the second hook arm of this lifting hook pass through the taut closure of spring, and the first claw that colludes down terminal surface and the second of this lifting hook closure collude the claw up end and laminate mutually, thereby effectively prevent under the first claw terminal surface that colludes and the second collude and claw up end production gap between, thereby the joint or the uninstallation efficiency of reinforcing bar on this lifting hook and the superimposed sheet have been improved, superimposed sheet's whole hoist and mount drawing of patterns efficiency has been guaranteed.

In order to achieve the purpose, the technical scheme of the utility model a special lifting hook of superimposed sheet is designed, including first hook arm, second hook arm and spring, first hook arm upper end is equipped with first hole for hoist, first hook arm lower extreme is equipped with first claw, and second hook arm upper end is equipped with the second hole for hoist, and second hook arm lower extreme is equipped with the second claw, and first hole for hoist on the first hook arm and the second hole for hoist on the second hook arm are articulated to be connected, and first claw that colludes folds inside the second claw, and terminal surface and second claw up end laminate mutually under the first claw that colludes, the spring sets up inside the lifting hook, and the spring is in tensile state when the lifting hook is closed, spring one end and first hook arm inside wall fixed connection, the spring other end and second hook arm inside wall fixed connection.

The utility model discloses the first hook arm and the second hook arm of lifting hook pass through the taut closure of spring, and when this lifting hook was closed first collude under the claw terminal surface collude the claw up end with the second and laminate mutually, effectively prevent that first terminal surface and second collude under the claw from colluding and produce the gap between the claw up end, secondary hook lock after having avoided on this lifting hook and superimposed sheet unhook or this lifting hook and superimposed sheet after the uninstallation of reinforcing bar on the reinforcing bar joint, thereby the joint or the uninstallation efficiency of reinforcing bar on this lifting hook and superimposed sheet has been improved, the whole hoist and mount drawing of patterns efficiency of superimposed sheet has been guaranteed.

In order to facilitate the rapid opening and closing of the first hook claw and the second hook claw when the lifting hook is used, the preferred technical scheme is that the upper end of the first hook arm and the upper end of the second hook arm are respectively and reversely provided with the snapping lugs extending along the opening and closing direction of the lifting hook. During the use, break the ear to the inside extrusion of lifting hook off with the fingers and thumb through holding two to reach opening and shutting fast of lifting hook, improved the use convenience of this lifting hook.

In order to facilitate smooth opening and closing of the first hook claw and the second hook claw when the lifting hook is used, the further preferable technical scheme is that the upper end surface of the second hook claw is set to be a plane structure horizontally extending along the opening and closing direction of the lifting hook. When the first hook claw and the second hook claw are opened and closed, the upper end surface of the second hook claw is set to be a plane structure horizontally extending along the opening and closing direction of the lifting hook, so that touch friction between the lower end surface of the first hook claw and the upper end surface of the second hook claw can be effectively prevented, and smooth opening and closing of the first hook claw and the second hook claw are facilitated.

In order to improve the close adaptability between the first hook claw and the second hook claw, the further preferable technical scheme is that the inner side wall of the second hook claw is internally trapped inside the lower end of the second hook arm, and the inner side wall of the second hook claw and the inner side wall of the second hook arm form a limit table matched with the first hook claw. When this lifting hook was closed, the embedded laminating of first claw of colluding colludes in the spacing platform that second colluded claw and second hook arm formed, has improved the laminating suitability of first hook arm and second hook arm on the one hand, and on the other hand effectively prevents that the reinforcing bar from colluding the slippage in the gap that claw and second colluded the department of meeting from first hook on the superimposed sheet, has improved the safety in utilization of this lifting hook.

In order to further improve the stability in use of this lifting hook, further preferred technical scheme still, the upper end of first hook arm is equipped with first hoist and mount portion, first hole for hoist sets up on first hoist and mount portion, the upper end of second hook arm is equipped with second hoist and mount portion, the thickness of first hoist and mount portion is greater than the thickness of second hoist and mount portion, be equipped with the vertical open slot with first hoist and mount portion adaptation on the inside wall of second hoist and mount portion, the second hole for hoist sets up on second hoist and mount portion, and the second hole for hoist runs through the both sides wall of vertical open slot, first hoist and mount portion and second hoist and mount portion are articulated to be connected, and first hoist and mount portion gomphosis is in the vertical open slot of second hoist and mount portion. Vertical open slot makes the first hoist and mount portion of first hook arm and the second hoist and mount portion gomphosis of second hook arm articulated be connected, can prevent effectively that first hook arm and second hook arm from taking place to rock in the use, has improved the stability in use of lifting hook.

Further preferred technical scheme is in addition, the spring level sets up in the inside upper end of lifting hook, spring one end and first hook arm inside wall upper end fixed connection, the spring other end and second hook arm inside wall upper end fixed connection. On one hand, the tensioning closing force between the first hook arm and the second hook arm of the lifting hook is ensured, so that the first hook claw and the second hook claw are tightly attached; on the other hand, the interference of the spring to the first hook claw or the second hook claw on the lifting hook is avoided, and the use convenience of the lifting hook is ensured.

The utility model has the advantages and the beneficial effects that:

1. the utility model discloses the first hook arm and the second hook arm of lifting hook pass through the taut closure of spring, and when this lifting hook was closed first collude under the claw terminal surface collude the claw up end with the second and laminate mutually, effectively prevent that first terminal surface and second collude under the claw from colluding and produce the gap between the claw up end, secondary hook lock after having avoided on this lifting hook and superimposed sheet unhook or this lifting hook and superimposed sheet after the uninstallation of reinforcing bar on the reinforcing bar joint, thereby the joint or the uninstallation efficiency of reinforcing bar on this lifting hook and superimposed sheet has been improved, the whole hoist and mount drawing of patterns efficiency of superimposed sheet has been guaranteed.

2. The upper end of the first hook arm and the upper end of the second hook arm are respectively and reversely provided with a snapping lug extending along the opening and closing direction of the lifting hook. During the use, break the ear to the inside extrusion of lifting hook off with the fingers and thumb through holding two to reach opening and shutting fast of lifting hook, improved the use convenience of this lifting hook.

3. When the first hook claw and the second hook claw are opened and closed, the upper end surface of the second hook claw is set to be a plane structure horizontally extending along the opening and closing direction of the lifting hook, so that touch friction between the lower end surface of the first hook claw and the upper end surface of the second hook claw can be effectively prevented, and smooth opening and closing of the first hook claw and the second hook claw are facilitated.

4. When this lifting hook was closed, the embedded laminating of first claw of colluding colludes in the spacing platform that second colluded claw and second hook arm formed, has improved the laminating suitability of first hook arm and second hook arm on the one hand, and on the other hand effectively prevents that the reinforcing bar from colluding the slippage in the gap that claw and second colluded the department of meeting from first hook on the superimposed sheet, has improved the safety in utilization of this lifting hook.

5. Vertical open slot makes the first hoist and mount portion of first hook arm and the second hoist and mount portion gomphosis of second hook arm articulated be connected, can prevent effectively that first hook arm and second hook arm from taking place to rock in the use, has improved the stability in use of lifting hook.

6. The spring level sets up in the inside upper end of lifting hook, spring one end and first hook arm inside wall upper end fixed connection, the spring other end and second hook arm inside wall upper end fixed connection. On one hand, the tensioning closing force between the first hook arm and the second hook arm of the lifting hook is ensured, so that the first hook claw and the second hook claw are tightly attached; on the other hand, the interference of the spring to the first hook claw or the second hook claw on the lifting hook is avoided, and the use convenience of the lifting hook is ensured.

Drawings

FIG. 1 is a schematic view of a prior art elastic hook;

FIG. 2 is a schematic view showing the structure of a first hook arm in embodiment 1;

FIG. 3 is a schematic structural view of a second hook arm in embodiment 1;

FIG. 4 is a schematic view showing the construction of a special hook for a laminated plate in example 1;

FIG. 5 is a plan view of the first hook arm in embodiment 2;

FIG. 6 is a top view of the second hook arm in embodiment 2;

FIG. 7 is a schematic top view showing the structure of a hook for a composite board according to example 2.

In the figure: 1. a first hook arm; 2. a second hook arm; 3. a spring; 4. a first hoisting hole; 5. a first hook claw; 6. a second hoisting hole; 7. a second claw; 8. breaking off ears; 9. a limiting table; 10. a first hoisting part; 11. a second hoisting part; 12. a longitudinal open slot; 13. and (7) a pin shaft.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Example 1

As shown in fig. 2 to 4, a special lifting hook for laminated slabs comprises a first hook arm 1, a second hook arm 2 and a spring 3, wherein the upper end of the first hook arm 1 is provided with a first lifting hole 4, the lower end of the first hook arm 1 is provided with a first hook claw 5, the upper end of the second hook arm 2 is provided with a second lifting hole 6, the lower end of the second hook arm 2 is provided with a second hook claw 7, the first lifting hole 4 on the first hook arm 1 and the second lifting hole 6 on the second hook arm 2 are hinged, the first hook claw 5 is overlapped inside the second hook claw 7, the lower end surface of the first hook claw 5 is attached to the upper end surface of the second hook claw 7, the spring 3 is arranged inside the lifting hook, when the lifting hook is closed, the spring 3 is in a stretching state, one end of the spring 3 is fixedly connected with the inner side wall of the first hook arm 1, and the other end of the spring 3 is fixedly connected with the inner side wall of the second hook arm 2. The upper ends of the first hook arm 1 and the second hook arm 2 are respectively and reversely provided with a snapping lug 8 extending along the opening and closing direction of the lifting hook. The upper end surface of the second hook claw 7 is a plane structure horizontally extending along the opening and closing direction of the lifting hook. The inside wall of second colludes claw 7 sinks inside second hook arm 2 lower extreme, and the inside wall of second colluding claw 7 and the inside wall of second hook arm 2 form with the spacing platform 9 of first colluding claw 5 looks adaptation. Spring 3 level sets up in the inside upper end of lifting hook, and 3 one ends of spring and 1 inside wall upper end fixed connection of first hook arm, the 3 other ends of spring and 2 inside wall upper ends fixed connection of second hook arm.

Example 2

As shown in fig. 5 to 7, a special lifting hook for laminated slabs, embodiment 2 is different from embodiment 1 in that an upper end of a first hook arm 1 is provided with a first lifting portion 10, a first lifting hole 4 is formed in the first lifting portion 10, an upper end of a second hook arm 2 is provided with a second lifting portion 11, the thickness of the first lifting portion 10 is larger than that of the second lifting portion 11, a longitudinal open slot 12 matched with the first lifting portion 10 is formed in the inner side wall of the second lifting portion 11, a second lifting hole 6 is formed in the second lifting portion 11, the second lifting hole 6 penetrates through two side walls of the longitudinal open slot 12, the first lifting portion 10 is hinged to the second lifting portion 11 through a pin 13, and the first lifting portion 10 is embedded in the longitudinal open slot 12 of the second lifting portion 11.

Principle of use of the special hook of the superimposed plate in example 1 or example 2:

(one) the joint installation of reinforcing bar on this lifting hook and the superimposed sheet: an operator grips and extrudes the two breaking lugs 8 to the inside of the lifting hook, so that the first hook claw 5 on the first hook arm 1 and the second hook claw 7 on the second hook arm 2 are relatively opened, the opened lifting hook is clamped on a steel bar on the laminated slab, the two breaking lugs 8 are loosened, the spring 3 tensions the first hook arm 1 and the second hook arm 2 through elastic restoring force, namely the first hook claw 5 and the second hook claw 7 are closed, and the clamping installation of the lifting hook and the steel bar on the laminated slab is completed;

(II) unloading the lifting hook and the steel bars on the laminated slab: operating personnel breaks ear 8 through holding and two to the inside extrusion of lifting hook and makes first hook 5 on the first hook arm 1 and the second hook 7 on the second hook arm 2 open relatively to shift out the lifting hook that should open from the reinforcing bar of superimposed sheet, unclamp two and break ear 8 off with the fingers and thumb, spring 3 is taut with first hook arm 1 and second hook arm 2 through elastic restoring force, and first hook 5 and second hook 7 are closed promptly, accomplish the uninstallation of reinforcing bar on this lifting hook and the superimposed sheet.

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

Claims (6)

1. The utility model provides a superimposed sheet's special lifting hook, a serial communication port, including first hook arm, second hook arm and spring, first hook arm upper end is equipped with first hole for hoist, first hook arm lower extreme is equipped with first claw, and second hook arm upper end is equipped with the second hole for hoist, second hook arm lower extreme is equipped with the second claw, and first hole for hoist on the first hook arm and the second hole for hoist on the second hook arm are articulated to be connected, and first claw of colluding is coincide inside the second claw, and just the terminal surface is colluded claw up end with the second under the first claw and is laminated mutually, the spring sets up inside the lifting hook, and the lifting hook is in tensile state when closed, spring one end and first hook arm inside wall fixed connection, the spring other end and second hook arm inside wall fixed connection.

2. The special lifting hook for laminated slabs according to claim 1, wherein the upper ends of the first and second hook arms are respectively provided with an arm-snapping lug extending in the opening and closing direction of the lifting hook in a back-to-back direction.

3. The special hook for a superimposed plate according to claim 2, wherein an upper end surface of the second hook claw is formed in a planar structure extending horizontally in a direction in which the hook is opened and closed.

4. The special lifting hook for superimposed plates as claimed in claim 3, wherein the inner sidewall of the second hook claw is recessed inside the lower end of the second hook arm, and the inner sidewall of the second hook claw and the inner sidewall of the second hook arm form a limit platform adapted to the first hook claw.

5. The special lifting hook for laminated slabs according to claim 4, wherein the upper end of the first hook arm is provided with a first lifting portion, the first lifting hole is formed in the first lifting portion, the upper end of the second hook arm is provided with a second lifting portion, the thickness of the first lifting portion is larger than that of the second lifting portion, a longitudinal open slot matched with the first lifting portion is formed in the inner side wall of the second lifting portion, the second lifting hole is formed in the second lifting portion, the second lifting hole penetrates through two side walls of the longitudinal open slot, the first lifting portion is hinged to the second lifting portion, and the first lifting portion is embedded in the longitudinal open slot of the second lifting portion.

6. The special lifting hook for superimposed plates as claimed in claim 5, wherein said spring is horizontally disposed at the upper end of the interior of the lifting hook, one end of the spring is fixedly connected to the upper end of the inner sidewall of the first hook arm, and the other end of the spring is fixedly connected to the upper end of the inner sidewall of the second hook arm.

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