JPH0419026Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a twist lock pin device for a spreader for transporting containers.

Prior Art This type of conventional twist lock pin device is
As shown in the figure, the oval lock frame 2 of the container 1
The twist lock pin 3 is inserted into the long hole, the lock cylinder 4 is used to reverse the twist lock pin 3, and the boom frame 5 and guide member 6 are hooked in the short hole direction and suspended for transportation. It is integrated, and the load is supported by upper and lower bushes 7 and 8 inserted into two places on the guide member 6.

Problems to be solved by the invention However, the container 1 of the guide member 6
If the insertion part 9 into the lock frame 2 interferes with the container 1 and wears out after repeated operations, replenishment (replacement) is not easy.

Purpose of the invention This invention was made in view of the above circumstances.
The purpose of this is to make the part of the guide member inserted into the lock frame of the container separate from the guide member to facilitate replacement of this part.

Means and Effects for Solving the Problems In order to achieve the above object, the present invention provides a guide member 13 on the boom frame 10.
3, in which the twist lock pin 27 is supported via the bushes 20 and 21, the boom frame 10
A lower guide member 22, which is inserted into a hole-shaped portion 34 on the container side when the twist lock pin 27 is inserted into the lock frame 33 on the container side, is attached to the lower part of the container with a bolt 26.

Each time the twist lock pin 27 is inserted and locked into the lock frame 33 on the container side, the lower guide member 22 interferes with the hole 34 on the container side, causing the lower guide member 22 to wear out. In this case, the lower guide member 2 can be removed by removing the bolt 26.
2 from the boom frame 10 and replaced with a new one.

Embodiments Hereinafter, embodiments of the present invention will be described based on FIGS. 1 to 6. FIG. 2 shows a longitudinal section of a twist lock pin device for a spreader according to the present invention. In the figure, 10 is a boom frame, and a cylindrical guide member 13 is interposed and fixed between an upper member 11 and a lower member 12 of this boom frame 10.
Holes 14 and 15 are provided in portions facing the ends of the guide members 13 of 1 and 12. The lower member 12
A recess 16 is formed on the lower surface of the member to surround the hole 15, and a bolt hole 17 is provided in the lower member 12.

Bush insertion holes 18 and 19 are formed from the holes 14 and 15 of the upper and lower members 11 and 12 to the inner periphery of the guide member 13, and bushes 20 and 21 are inserted into these bush insertion holes 18 and 19. It has been done.

Reference numeral 22 in the drawing indicates a lower guide member, and a spigot part 23 is formed at the upper end of the lower guide member 22, and a mounting seat part 24 is formed at the outer periphery of the lower guide member 22. Yes, this mounting seat part 2
4 is provided with a bolt insertion hole 25.

The lower guide member 22 configured in this manner is fastened to the lower member 12 with bolts 26 by fitting the spigot portion 23 into the recess 16 .

A twist lock pin 27 rotatably supported by the bushes 20 and 21 is inserted into the guide member 13 and the lower guide member 22,
A lock portion 28 is formed at the lower end of the twist lock pin 27. An arm 29 is fixed to the upper end of the twist lock pin 27, and a piston rod 31 of a lock cylinder 30 whose base end is attached to the boom frame 10 is connected to the arm 29.

Next, the operation will be explained.

The spreader A is lowered and the twist lock pin 27 is inserted into the lock frame 33 of the container 32. At this time, the lower guide member 22 is inserted into the hole 34 of the container 32.

Due to the operation of the lock cylinder 30, the arm 2
9, the twist lock pin 27 is reversed, and its lock portion 28 engages with the lock frame 33, thereby locking the twist lock pin 27 to the container 32.

When such locking operations are repeated, the lower guide member 22 interferes with the hole-shaped portion 34 of the container 32, causing wear of the lower guide member 22.

In this case, remove the bolt 26, remove the lower guide member 22, and replace it with a new one.

Note that a gap δ is provided between the inner peripheral surface of the lower guide member 22 and the twist lock pin 27, so that the twist lock pin 27 is always connected to the bush 2.
0,21. Further, since the lower guide member 22 has its spigot portion 23 fitted into the recess 16, no large force is applied to the bolt 26.

Effect of the invention Each time the twist lock pin 27 is inserted and locked into the lock frame 33 on the container side, the lower guide member 22
The lower guide member 22 interferes with the hole-shaped portion 34 on the container side and wears out, but in this case, the bolt 26
By removing the lower guide member 22, the lower guide member 22 can be removed from the lower member 12 of the boom frame 10 and replaced with a new one.Moreover, there is no need to remove the guide member 13, rotation mechanism, etc. Replacement becomes extremely easy.

Also, the twist lock pin 27 is attached to the bush 2.
The lower guide member 22 and the twist lock pin 27 are supported by the guide member 13 via the lower guide member 22 and the twist lock pin 27.
The bolt 26 will not loosen because the force acting on the guide member 13 will not be transmitted to the guide member 13.

[Brief explanation of the drawing]

Fig. 1 is a side view of a working vehicle equipped with a spreader, Fig. 2 is a longitudinal sectional view of an embodiment of the present invention, Fig. 3 is a view taken from the direction of Fig. 2, and Fig. 4 is a lower guide member. 5 is a longitudinal sectional view of the conventional spreader, FIG. 5 is a sectional view taken from the direction of FIG. 4, FIG. 6 is a longitudinal sectional view of the conventional spreader. 10 is a boom frame, 13 is a guide frame, 20, 21
is a bush, 22 is a lower guide member, and 27 is a twist lock pin.

Claims (1)

[Scope of utility model registration request] Hole 15 in lower member 12 configuring boom frame 10
A cylindrical guide member 13 is attached to the upper surface of the periphery, and a twist lock pin 27 is rotatably supported within this guide member 13 via bushes 20 and 21.
The lower part of this twist lock pin 27 is inserted into the hole 15.
A lock portion 28 is provided to protrude further downward, and a rotation mechanism is attached between the upper part of the twist lock pin 27 and the boom frame 10, and the twist lock is attached to the lower surface around the hole 15 of the lower member 12 of the boom frame 10. A twist lock pin device for a spreader, characterized in that a lower guide member 22 that fits into the outer peripheral surface of a pin 27 with a gap is attached with a bolt 26.