JPH0672515A - Inside hanging type general purpose hanging tool - Google Patents

Abstract

PURPOSE:To provide a hanging tool which can engage with a structure from its inside. CONSTITUTION:A hanging tool has such formation as a pair of stretching arms 6 is rotatably connected to the lower end of a main pillar 4, and an adjustable contact surface metal fitting 8 is connected to the tip of the stretching arm 6. In the case of hanging up, the stretching arm 6 is put inside a structure, and the stretching force of the stretching arm 6 is utilized to engage the stretching arm 6 with the structure for hanging up it. In the case of removing the stretching arm 6, it is rotated to separate the adjustable contact surface metal fitting 8 from the inner wall face of the structure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal hanging type general-purpose hanging device for hanging open type heavy objects such as a water collecting basin, a U-shaped groove, and a pipe from inside.

[0002]

2. Description of the Related Art Conventionally, structures having different dimensions for lifting and hanging during transportation, installation, and removal work of square and round open heavy objects such as catchment basins, U-shaped grooves, pipes, etc. On the other hand, it lacks versatility and can be used for each size by simple adjustment with one model, and there is no hanging tool that hangs these structures from the inside.

[0003]

However, the installation location of these structures is often narrow, and there is a problem in that it is inconvenient for engagement from the inside and adaptability to each size by simple adjustment.

An object of the present invention is to provide a simple internal hanging type general-purpose suspending device which can be hooked from inside to an open type heavy object such as a water collecting basin, a U-shaped groove and a pipe to hang and suspend the heavy object. Especially.

[0005]

According to the present invention, the above object can be achieved by the following inner hanging type general-purpose hanging device. That is, a main pillar, a pair of strut arms whose one end is rotatably connected to a lower end portion of the main pillar and whose length extending obliquely upward and to the left and right is adjustable, and the other end portions of the pair of strut arms. A freely contacting surface metal fitting that is rotatably connected to the slide fitting, a slide fitting that is slidably supported by the main pillar, and a connecting rod that connects the slide fitting and the strut arm.
A spring for urging the slide fitting downward with respect to the main pillar, and a grip ring fixed to an upper end portion of the main pillar,
An inner hook type general-purpose hanging device comprising an operation trigger movably provided on an upper end portion of the main pillar and connected to the slide fitting.

[0006]

In the above-mentioned suspending tool, while holding the grip ring and pulling up the operation trigger with the fingers, the lower end of the main pillar is inserted inside the target weight structure, and the operation trigger is released at an appropriate position. Open, the free contact surface metal fitting at the tip is pressed against the inner wall surface of the structure, and the suspender is attached and fixed.

When the lifting device is pulled upward while holding the grip ring, the pressure contact force increases as the load is applied, and it is possible to reliably stop the sliding and lift the structure to move it. To remove the hanging tool, by pulling the operating trigger with the finger as it is, the tip of the tension arm is raised and the free contact surface metal fitting at the tip is separated from the inner wall surface of the structure, and can be easily removed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An inner hanging type general-purpose hanging device according to an embodiment of the present invention will be described below with reference to FIG. Internal hanging type general-purpose hanging device 2
Is a main pillar 4, a pair of strut arms 6, a free contact surface fitting 8 provided at the tip of the strut arm 6, a slide fitting 10, a connecting rod 12, a spring 14, and a grip ring 16.
And an operation trigger 18.

The main pillar 4 extends vertically. Each strut arm 6 is rotatably connected to the lower end of the main pillar 4 at one end. The pair of strut arms 6 are arranged symmetrically with the main column 4 as the center of symmetry.

Each strut arm 6 has a structure whose length can be adjusted. More specifically, the strut arm 6
Comprises a pipe 6a, a nut 6b connected to one end of the pipe 6a by a snap ring so as to be rotatable around the axis of the pipe 6a, and a screw rod 6c screwed into a female screw of the nut 6b. The threaded rod 6c extends by penetrating into the pipe 6a. When the nut 6b is rotated while the rotation of the screw rod 6c is stopped, the screw rod 6c moves in the axial direction relative to the nut 6b, and the screw rod 6c appears and disappears in the axial direction with respect to the pipe 6a. Is adjusted.

For example, a heavy-weight structure such as a U-shaped groove is standardized so that its dimensions change stepwise. Therefore, a mark is cut on the threaded rod 6c in accordance with the standard dimensions.
It is convenient to know at which position the threaded rod 6c is stopped when it comes in and out of the pipe 6a.

A universal contact surface fitting 8 is connected to the tip of the strut arm 6, that is, the tip of the screw rod 6c via a universal joint (for example, a spherical joint) 8a. Universal contact surface fitting 8
Can be crimped to the inner wall of the heavy structure at any angle.

The inside of the main pillar 4 is hollow, and the slide fitting 10 is inserted therein so as to be slidable in the axial direction with respect to the main pillar 4. A window (opening) is formed in the main pillar portion into which the slide fitting 10 is inserted by partially removing the pipe wall.

A connecting rod 12 extends between the slide metal fitting 10 and the tension arm 6, and the connecting rod 12 is provided.
Is inserted through the window provided on the main pillar. The connection between the connecting rod 12 and the tension arm 6 is a rotatable connection, and the connection between the connecting rod 12 and the slide fitting 10 is also a rotatable connection.

The spring 14 includes a slide fitting 10 and
The slide fitting 10 extends constantly between the pins provided at the lower end of the main pillar 4 and is pulled downward. As a result, the pair of strut arms 6 are always biased in the opening direction.

The grip ring 16 is fixed to the upper end of the main column 4. When hanging a lifting device on a heavy structure to lift it,
The grip ring 16 lifts.

The operation trigger 18 is arranged inside the grip ring 16. The operation trigger 18 and the slide fitting 10 are connected to each other by a rod extending in the vertical direction. The operation trigger 18 can move up and down relative to the grip ring 16.

Next, the operation will be described. When hoisting, the operation trigger 18 is held with the grip ring 16 and the finger is pulled upward. The pair of strut arms 6 rotate upward to reduce the distance between the pair of universal contact surface fittings 8, and in this state, the portion of the universal contact surface fitting 8 is put into the structure to be lifted.

Then, the hand is released from the operation trigger 18. The slide metal fitting 10 moves downward due to the bias of the spring 14, and the pair of tension arms 6 pivot downward to open,
A pair of universal contact surface fittings 8 are crimped to the inner wall surface of the structure.
In this state, the attachment of the hanging tool to the structure is completed.

Next, the grip ring 16 is lifted at the grip ring 16 portion with a hand or by hooking a hook of a crane or the like on the grip ring 16. When this pulling force is applied to the main pillar 4, the pair of tension arms 6 try to be linear and the distance between the pair of universal contact surface fittings 8 tends to increase, and the universal contact surface fitting 8 further increases the inner wall surface of the structure. Is crimped to. Therefore, the structure does not drop due to slippage between the structure and the universal contact surface fitting 8 when the structure is lifted.

If the load applied to the structure such as the U-shaped groove from the lifting tool is too large, the structure will be damaged, but the load applied to the structure from the lifting tool of the present invention is proportional to the weight of the structure to be lifted. (The weight of the structure is multiplied by the leverage of the lever), and the structure can be set only at the position where the damage moment of the structure is small. Since the structure also increases in thickness and the like in accordance with the weight according to the standard, the structure is not damaged by the load applied to the structure by the lifting device of the present invention.

When removing the hanging tool from the structure, it is sufficient to perform one-touch operation by merely holding the grip ring 16 with the hand and putting the finger on the operation trigger 18 and pulling the operation trigger 18. In this case, when the operation trigger 18 is pulled, the pair of tension arms 6
Rotates upward, and the universal contact surface fitting 8 separates from the inner wall surface of the structure.

[0023]

According to the present invention, it is possible to obtain the effect that the suspending tool can be hooked from the inside of the structure to lift and move the structure. Also, attaching the hangings to the structure,
It can be removed easily with one-touch operation.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an internal hanging type universal hanging device according to an embodiment of the present invention.

[Explanation of symbols]

 2 Lifting tool 4 Main pillar 6 Stretching arm 8 Universal surface fitting 10 Slide fitting 12 Connecting rod 14 Spring 16 Grip ring 18 Operation trigger

Claims (1)

[Claims] 1. A main pillar, a pair of tension arms whose one end is rotatably connected to a lower end portion of the main pillar, and the length of which extends obliquely upward and to the left and right, and a pair of the tension arms. A free contact surface metal fitting rotatably connected to the other end, a slide metal fitting slidably supported by the main pillar, a connecting rod connecting the slide metal fitting and the tension arm, and the slide metal fitting. A spring biasing the main pillar downward, a grip ring fixed to the upper end of the main pillar, an operation trigger movably provided on the upper end of the main pillar and connected to the slide fitting, Inner hanging type general-purpose hanging device consisting of.