JPH0515519Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a chain stopper having a fixed cam body used to temporarily stop the chain when lifting a heavy object with a chain. .

[Conventional technology]

Conventional chain stoppers are shown in Figures 7 and 8.
As shown in the figure, a vertical groove 4 with an open upper part is provided in the tension direction of the chain 1 at the center of the upper surface, into which the vertical link 3 of the chain is fitted and guided, and on the opposite side of the tension side of the chain. A slope-like sliding surface 10 on which the chain slides is formed, and a protrusion 7 is provided at the end of the tension side of the chain to prevent the chain from falling and enable smooth transition. It is known to have a recess 8 which intersects with the passage groove 4 at the lower part of the upper surface and has a cross-shaped cross section and accommodates and locks the horizontal link 5 of the chain (see Japanese Utility Model Publication No. 54-33273).

[The problem that the idea aims to solve]

The conventional chain stopper has a slope-like sliding surface 10 for locking the vertical link 3 of the chain.
If the chain is pulled back a little while being pulled up along the chain, if the protrusion 7 is not provided at the end of the tension side of the chain, the vertical link 3 will be pulled up along the sliding surface, and the recess 8 will be removed. There was a drawback that it could not be inserted and locked. In addition, since the chain stopper is fixedly attached to the side of the ship, etc., when lifting the chain, it is fine to pull the chain vertically along the longitudinal groove 4, but the direction of lifting the chain deviates from the vertical direction. The disadvantage is that the chain tries to forcefully pass through the longitudinal groove 4, resulting in significant wear, or collides with the end of the longitudinal groove 4, damaging it.

This invention eliminates the above-mentioned drawbacks, and although it has a simple structure, locking and releasing the chain is extremely easy and reliable, the chain is guided accurately, and the chain stopper does not damage the locking part. The challenge is to obtain the following.

[Means to solve the problem]

In order to solve the above-mentioned problems, this invention has a chain guide which has an open upper surface and a passing side where the chain moves up and down, and has a guide which becomes a cam surface that spreads outwards near the upper end of the opening of the chain guide. A cam plate with a mouth and its rear facing diagonally downward was attached to both left and right sides of the chain derivative with a gap for the vertical chain to pass through, and the vertical chain was located on a closed wall at the rear of the chain derivative. At this time, the cam plate behind the position where the upper and lower horizontal chains enter across the cam plate is bent diagonally upward, and the vertical thickness of the cam plate at that position is made to match the interval between the upper and lower horizontal chains. , a chain stopper having a fixed cam body whose rear part is increased in thickness so that the vertical chain stops at the bending point, and a rotating arm provided above the right end of the chain derivative when viewed from the side to stop the chain derivative from the chain stopper. A chain stopper having the above-mentioned fixed cam body pivotably mounted to rotate to the right from the mounting base is provided.

[Effect]

The operation of this invention will be explained with reference to examples.

To wind up and temporarily fix the chain 9 on which a heavy object is suspended using an anchor winch, move the chain 9 to the left so that it enters the guide port 10 from above the opening 2 side of the chain guide 1 in FIGS. 3 and 4. When the vertical chain 9a is lowered while moving toward the guide port 10, the diameter of the vertical chain 9a is smaller than the interval L between the guide ports 10, so the vertical chain 9a in the same direction as the guide port 10 is
The horizontal chain 9b, which enters inside but faces perpendicularly to the direction of the guide port 10, hits the cam plates 8, 8, and is lowered to the lowest value 8a of the lower V-shaped cross section in FIG. 1 and is locked. Therefore, the chain 9 can be temporarily fixed.

When the chain 9 is pulled up to the upper right from this state, the horizontal chain 9b is guided to the outside of the chain guide 1 by the inclined surface 8b of the cam plate 8, and the temporary fixation can be released. In addition, if the chain 9 is lifted out of the vertical direction when hoisting the chain 9, the chain derivative 1
Since the rotating arm 3 is pivotally mounted 7, the chain 9 is smoothly guided from the guide port 10 into the space between the cam plates 8, 8 by rotating according to the lifting angle of the chain. Pulling chain derivative 1
It cannot be damaged by colliding with it.

〔Example〕

An embodiment of this invention will be described based on the drawings.

As shown in FIGS. 1 to 4, reference numeral 1 is a chain derivative with an opening 2 on one side, and rotary arms 3, 3 are attached at right angles to the upper rear part of the chain derivative, and the rear end parts 4, 4 are It is pivoted 7 between the bearing pieces 6, 6 of the mounting base 5.

The chain stopper is provided with a cam plate 8 having a V-shaped cross section downward from near the upper end of the opening 2 of the chain guide 1, and the cam plate 8 has a guide port 10 with an interval L through which the chain 9 can pass from the direction of the opening 2. is provided over the entire length of the cam plate 8.

In this embodiment, a rotating arm 3 is provided above the rear part of the chain derivative 1, and when it is not needed, a mounting base 5 is provided on which the chain derivative 1 is attached to a barge or the like by the rotating arm 3.
Although the chain guide member 1 is rotated to the side so as not to interfere with work, the chain guide member 1 may be directly attached to the mounting base 5 without providing the rotating arm 3.

FIG. 5 shows a case where the anchor 12 hoisted up by an anchor winch (not shown) is temporarily fixed by a chain stopper A attached to a barge 11 etc. It can be temporarily fixed as desired.

In FIG. 6, a chain stopper A is provided on the barge 11 and a crane (not shown) is installed as in FIG. 5.
When suspending a heavy object 13, if the hoisting length of the crane is limited, connect the chain 9 to the end of the wire 14 let out from the crane.
This chain 9 is temporarily fixed to a chain stopper A, and a wire 14a is connected to the end of this chain 9, and the operation of hanging it down is repeated to carry it to a predetermined location.

[Effect of idea]

This invention allows temporary locking by simply lowering the chain from above the chain derivative of the chain stopper, and releasing the temporary lock by lifting it slightly, making locking and releasing operations simple and easy. Unlike conventional models, it has a one-piece structure with no protruding parts, and the chain guide is pivotally attached by a rotating arm, so it will not be damaged even if the chain is pulled up at an angle that is not perpendicular or if it is handled roughly. It has a simple structure and can be obtained at low cost.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of this invention, with Figure 1 being a front view, Figure 2 being a plan view, and Figure 3 being a plan view.
The figure is a side view, Figure 4 is a perspective view from above, and Figure 5 is a side view.
6 and 6 are side views showing an example of use, FIG. 7 is a plan view showing a conventional chain stopper, and FIG. 8 is a front view. DESCRIPTION OF SYMBOLS 1... Chain derivative, 2... Opening, 3... Rotating arm, 5... Mounting base, 7... Pivoting, 8... Cam plate, 9... Chain, 10... Induction port, L... interval.

Claims (1)

[Claims for Utility Model Registration] 1 Opening 2 of the chain derivative 1 which is formed by opening the upper surface and the passing side where the chain 9 moves up and down.
The cam plate 8 has a guide port 10 near its upper end that serves as a cam surface 8a that spreads outward toward the front end, and a cam plate 8 that extends diagonally downward at the rear thereof.
Vertical chains 9a are installed on both the left and right sides of the chain derivative 1.
When the vertical chain 9a is located on the closed wall 1a at the rear of the chain guide 1, the upper and lower horizontal chains 9
Bend 8a diagonally upward the cam plate 8 at the rear of the position where the cam plates b and 9b enter across the cam plate 8, and change the vertical thickness of the cam plate 8 at that position between the upper and lower horizontal chains 9b and 9b. Match the spacing and expand the thickness behind it to create a vertical chain 9.
A chain stopper having a fixed cam body that stops at a bending point 8a. 2. A chain having a fixed cam body according to claim 1, wherein a rotating arm 3 is provided on the right end of the chain derivative 1 when viewed from the side, and the chain derivative 1 is pivoted so as to rotate to the right from its mounting base 5. Stopper.