JPH026076Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention maintains the chain bucket cart in a chain block in a vertical position at all times, and when a lifted load collides with the chain bucket cart, the chain bucket cart is This invention relates to a chain bucket cart support device that is automatically retracted and rotated.

[Prior art]

Conventionally, as a chain bucket support device for a chain block, as disclosed in Japanese Utility Model Publication No. 51-53581, a chain bucket support device has been used to support the load side load chain at the upper part of the chain bucket, that is, the inner part, and the load side load chain at the upper part of the chain bucket. A structure is known in which a chain and a portion on the opposite side, that is, an outer portion, are each connected to a chain block body via a hanging member.

[Problem that the invention attempts to solve]

In the case of the conventional chain bucket support device, the inner and outer parts of the upper part of the chain bucket are each fixed to the chain block body via hanging materials, so that the load lifted by the load chain is If the load reaches the upper limit and hits the chain bucket and then rises further, the chain bucket will be damaged or deformed by the cargo.

[Purpose of the invention, structure]

The purpose of this invention is to provide a chain bucket belt support device for a chain block that can advantageously solve the above-mentioned problems. The upper part of the chain bucket 1 to be accommodated is the chain block main body 2.
A chain bucket 1 is rotatably supported in a plane including the load side load chain 4 by a horizontal shaft 3 at the lower part of the chain bucket 1. A stopper 5 is provided between the load chain 4 and the lower part of the chain block body 2, and is engaged with the chain block body 2 to maintain a vertical posture to rotate the chain bucket 1 in the direction in which the stopper is pressed. A chain bucket belt support device in a chain block is characterized in that a spring 6 is attached thereto.

〔Example〕

Next, this invention will be explained in detail using illustrated examples.

The drawing shows an embodiment of this invention, in which the upper part of a chain bucket belt 1 made of plastic or metal that accommodates the no-load side load chain 23 in an electric chain block, and the lower part of the chain block main body 2 are provided horizontally. A pair of brackets 7 provided at intervals in the direction are pivotally connected by the horizontal shaft 3, and the chain bucket 1 connects to the load side load chain 4 hanging from the load sheave 24.
It is rotatably supported within a plane that includes.

A stopper 5 that comes into contact with the lower part of the chain block main body 2 between the horizontal shaft 3 and the load side load chain 4 is integrally integrated with the upper part of the chain bucket 1 on the side of the load side load chain 4, that is, the inner part thereof. A concave portion 8 that is concave toward the inside of the chain bucket 1 is bent and formed in a part connected to the chain bucket 1 and opposite to the load side load chain 4 at the upper part of the chain bucket 1, that is, an outer part.
The lower part of the vertical posture maintaining spring 6 made of a spring is accommodated in the recess 8 and fixed with a fixing device 9 such as a screw or a rivet, and the U-shaped curved portion 10 at the upper end of the vertical posture maintaining spring 6 is connected to a chain. The chain bucket belt 1 is pressed against the lower side surface of the block body 2, and the chain bucket belt 1 is moved to the horizontal axis 3 by the pressing force of the vertical posture maintaining spring 6.
The stopper 5 is pressed against the lower part of the chain block main body 2, and the chain bucket belt 1 is held in a vertical position.

A lower hook 12 is connected to the lower end of the load side load chain 4 via a hook connecting fitting 11,
The hoisting stopper 13, which is made up of a rubber ring 28 and metal plate rings 29 integrally provided on both upper and lower surfaces thereof, is fitted onto the load side load chain 4 and placed on the hook connecting fitting 11, and is mounted on the hook connecting fitting 11. A plurality of wheels 16 are attached to both sides of a wheel support member 15 fixed to the upper part of the chain block body 2 by bolts 14, and the wheels 16 are mounted between a pair of lips 18 on a running rail 17 made of channel steel with a lip. The wheel support member 15 is inserted,
Each wheel 16 is mounted on a lower flange 19 within a running rail 17.

The pair of brackets 7 are integrally provided with a chain guide member 25, which is fixed to the lower part of a casing 26 of the chain block main body with bolts 27, and an operating cable hanging from the chain block main body 2. An operation box 21 is connected to the lower end of 20.

When the load 22 is hung from the lower hook 12 of the chain block having the chain bucket cart support device of the above embodiment and the chain block is hoisted, the load 22 reaches near the upper limit position and the load on the chain bucket cart 1 is lowered. side road chain 4
After hitting the lower part of the side, when the hoisting operation is further performed, the chain bucket cart 1 is rotated outward (in the direction of arrow A) about the horizontal shaft 3 by the cargo 22.

When the hoisting operation continues after the hoisting stopper 13 hits the lower part of the chain block body 2, the slip-type torque limiter interposed in the transmission mechanism in the chain block body 2 is activated. slip.

In addition, at the end of the no-load side load chain 23,
A lowering stopper (not shown) is installed, and if the lowering operation continues after the lowering stopper hits the chain block body 2, the torque limiter slip.

When implementing this invention, a striker for operating an upper limit switch is provided at the end of the load side load chain, and when hoisting operation is performed to the upper limit position, the striker operates the upper limit switch of the electric chain block to raise the hoist. It may be configured to stop the operation.

Further, a coil spring or a torsion spring may be used as the vertical posture maintaining spring. When using a coil spring, a spring support fitting to which one end of the coil spring is fixed may be fixed to the upper part of the chain bucket cart 1. In addition, when using a torsion spring, for example, a spring hinge with a torsion spring set is manufactured, one plate of the spring hinge is fixed to the top of the chain bucket 1, and the tip of the other plate of the spring hinge is fixed. It is only necessary to engage the chain block body 2 with the chain block body 2.

[Effects of the invention] According to this invention, the upper part of the chain bucket 1 that accommodates the load chain on the no-load side of the chain block is pivotally attached to the lower part of the chain block main body 2 by the horizontal shaft 3, and the chain bucket 1
is rotatably supported within a plane that includes the load side load chain 4, so that the load side load chain 4
After the load 22 lifted by the chain bucket 1 collides with the lower part of the load side load chain 4 side of the chain bucket 1, when the load 22 is further lifted and moved, the load 22 lifts the chain bucket 1.
This can prevent the chain bucket 1 from being damaged or deformed by the cargo 22 being lifted. Between the chain block body 2
A stopper 5 is provided which comes into contact with the lower part of the chain block body 2, and a vertical posture maintaining spring 6 is attached which engages with the chain block main body 2 and rotates the chain bucket 1 in the direction in which the stopper is pressed.
In a normal case, by using the vertical posture holding spring 6 and the stopper 5, effects such as being able to stably support the chain bucket 1 in a vertical state so that it does not move far can be obtained.

[Brief explanation of drawings]

The drawings show one embodiment of this invention, in which Fig. 1 is a front view of a traveling electric chain block having a chain bucket belt support device of this invention, Fig. 2 is a side view thereof, and Fig. 3 is a front view of a traveling electric chain block having a chain bucket support device of this invention. FIG. 4 is an enlarged partial longitudinal sectional view showing a part of the electric chain block, and FIG.
The figure is a partially longitudinal front view showing a state in which the chain bucket cart is rotated by a load to be lifted. In the figure, 1 is a chain bucket, 2 is a chain block body, 3 is a horizontal axis, 4 is a load chain on the load side, 5 is a stopper, 6 is a spring for maintaining vertical posture, 7 is a bracket, 9 is a fixing device, and 10 is a U-shaped curved part, 12 is a lower hook, 13 is a striker for operating the upper limit switch, 15 is a wheel support member, 1
7 is a running rail, and 22 is luggage.

Claims (1)

[Scope of utility model registration request] The upper part of the chain bucket belt 1 that accommodates the load chain on the non-load side of the chain block is pivotally connected to the lower part of the chain block body 2 by a horizontal shaft 3, so that the chain bucket belt 1 accommodates the load chain on the load side. A stopper 5 is provided on the upper part of the chain bucket belt 1, which is rotatably supported, and which comes into contact with the lower part of the chain block main body 2 between the horizontal shaft 3 and the load-side load chain 4. A chain bucket belt support device for a chain block, characterized in that a vertical posture holding spring 6 is attached which engages with the block body 2 and rotates the chain bucket belt 1 in the stopper pressing direction.