JPH07315788A - Sliding clamp attachment - Google Patents

Abstract

PURPOSE:To reduce also the cost of maintenance, in a device wherein a liner can be used to the last with no waste. CONSTITUTION:In a sliding clamp attachment constituted by arranging a liner 2 in a long groove 11 of a holder 1 so as to slide a rail in the liner 2, the sliding clamp attachment is formed by providing in the liner 2 a flange 21 protruded to an end part of this liner, positioning the flange 21 in an opening end part 13 of the long groove 11, and further by fixing the flange 21 to the holder 1 by a separately provided stopper plate 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide clamp attachment for use in a bail clamp mounted on a forklift truck, and more particularly to a liner mounting structure.

[0002]

2. Description of the Related Art As shown in FIG. 4, in a forklift truck 9, there is a type in which a bast clamp 8 with a side shift is provided on a mast 91 at a front portion thereof. Forklift truck 9 having this bail clamp 8
Is a pair of clamp arms 81 and 8 as shown in FIG.
By opening and closing 2 in the lateral direction, you can hold and carry luggage. The bale clamp 8 is used for a wide range of cargo handling work such as container cargo handling and waste paper cargo handling.

As shown in FIGS. 4 to 6, the bail clamp 8 is mounted on a mast of a forklift truck 9 in the form of a frame-shaped holder 7 and is slidably mounted in front of the holder 7. It is composed of a pair of clamp arms 81 and 82. The clamp arms 81 and 82
Has rails 811, 812, 821, 822 slidably inserted into the long groove 71 of the holder 7 at its rear portion.

In the long groove 71 of the holder 7, as shown in FIGS. 6 to 8, gun metal (Al--Cu alloy) is used.
A liner 75 made of a lubricating alloy such as is inserted. And the holder 7 and the rails 811, 812,
The liner 75 is interposed between 821 and 822. The holder 7 has, as shown in FIG. 6, two long grooves 71 on each of the upper and lower sides, and the rails 811 and 81 via the liner 75.
2, 821 and 822 are slidably mounted.

A hydraulic cylinder (not shown) is provided between the bracket 815 of the clamp arm 81 and the bracket 717 of the holder 7, and between the bracket 825 of the clamp arm 82 and the bracket 716 of the holder 7, respectively. ing. Then, by expanding and contracting the hydraulic cylinder, the rails 811, 812,
821 and 822 are slid in the long groove 71.
As a result, the interval between the clamp arms 81 and 82 is changed, and the cargo handling work is performed. In FIG. 6, reference numeral 83
Is a cylinder protector for protecting the hydraulic cylinder from a cargo handling collision.

Next, the arrangement of the liner 75 in the holder 7 will be described. As shown in FIGS. 7 and 8, the inside of the long groove 71 of the holder 7 has a substantially C-shaped cross section and has the same length as the long groove. The liner 75 is inserted. In the holder 7,
In order to prevent the liner 75 from slipping out when the rails 811, 812, 821, 822 slide, the long groove 7
A stopper plate 76 having an E-shaped cross section is fixed to the front end surfaces 710 at the left and right ends in FIG.

Both are fixed by screwing a bolt 77 into the bolt hole 715 of the tip surface 710 and the bolt hole 761 of the stopper plate 76 (FIGS. 7 and 8). Further, as shown in FIG. 8, the inner surface 754 of the liner 75 is made to project from the tip surface 763 of the stopper plate 76 by a thickness t.

[0008]

[Problems to be Solved] However, the above-mentioned slide type clamp attachment has the following problems. That is, in the bale clamp 8, the liner 75 is worn by the sliding of the rail 811 (hereinafter, the same applies to 812, 821 and 822) while using the bale clamp 8. Finally, due to this wear, the inner surface 75 of the liner 75
4 and the front end surface 763 of the stopper plate 76 become the same surface. Therefore, the rail 811 contacts the stopper plate 76, the sliding resistance of the rail 811 increases, and the clamp arms 81 and 82 do not slide smoothly.

For this reason, it is necessary to replace the liner 75 with a new one, even though the original thickness is about half the original thickness. In addition, the liner is expensive because it is made of lubricious metal. Therefore, the material of the liner is wasted and the maintenance cost is increased.

In view of the above conventional problems, the present invention aims to provide a slide type clamp attachment which allows the liner to be used up to the end without waste and which can reduce the maintenance cost.

[0011]

According to the present invention, there is provided a slide type clamp attachment in which a liner is arranged in a long groove of a holder and a rail is slid in the liner, wherein the liner has a flange projecting at its end. The slide clamp attachment is characterized in that the flange is provided at the opening end of the long groove, and the flange is fixed to the holder by a stopper plate provided separately.

What is most noticeable in the present invention is that the liner is provided with a protruding flange, the flange is positioned at the open end of the long groove, and the flange is fixed to the holder by the stopper plate. The flange may be provided on the entire circumference or a part of the end of the liner, but is preferably provided on the rear of the end of the liner (FIG. 1). As a result, the flange at the rear of the liner can be easily fixed to the holder at the rear of the open end of the long groove.

It is preferable that the stopper plate is attached to the holder so that its front end surface is located rearward of the inner side surface of the long groove. This allows the liner to be used until almost all is worn.

Further, it is preferable that the liner has a shape to be inserted into the long groove from both right and left sides. This makes it easier to attach the liner to the long groove. Also,
An inner liner without a flange may be arranged between the left and right liners (Figs. 1 and 2).

[0015]

In the present invention, a flange protruding from the end of the liner is provided and the flange is fixed to the holder by the stopper plate. Therefore, even if the liner wears due to the sliding of the rail, the rail does not come into contact with the stopper plate until the entire thickness is lost.

Therefore, unlike the conventional case, it is not necessary to replace the liner with a new one in a state where about half the thickness of the liner still remains. Therefore, the material of the expensive liner is not wasted, and the maintenance cost can be reduced.

As described above, according to the present invention, it is possible to provide a slide type clamp attachment in which the liner can be used to the end without waste and the maintenance cost can be reduced.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A slide type clamp attachment according to an embodiment of the present invention will be described with reference to FIGS.
The slide type clamp attachment of this example is used for a bail clamp attached to the front surface of a forklift truck, as shown in the conventional example.

As shown in FIG. 1, in the slide type clamp attachment of this embodiment, a liner 2 is arranged in a long groove 11 of a holder 1, and a rail (reference numeral 811, 812, 821, FIG. 6 in FIG. 6) is provided in the liner 2. 822) is slid. The liner 2 has a flange 21 protruding at its end. Then, the flange 21 is positioned at the opening end 13 of the long groove 11,
It is fixed to the holder 1 by a stopper plate 3 provided separately. In this example, the holder 1 and the long groove 1
1 is the same as the above-mentioned conventional example.

At the rear of both ends of the holder 1, side frames 18 for connecting the four holders 1 in the vertical direction are provided as shown in FIGS. 1 and 3 (see FIG. 6). The liner 2 is made of gun metal and has a main body 20 having a C-shaped cross section and a flange 2 projectingly formed at one end thereof.
1, an inner surface 22 on which the rail slides.

The left liner 2 is shown in FIG. The liner 2 on the right side is symmetrical to the liner on the left side,
It has a flange 21 (FIG. 3). An inner liner 29 having no flange is inserted between the left and right liners 2. Next, the stopper plate 3 is
As shown in FIG. 3, in addition to having a stepped thin portion 32,
It has a mounting hole 35 through which the bolt 36 is inserted.

Further, as shown in FIGS. 2 and 3, the main body 20 of the liner 2 has a thickness R. When the liner 2 is fixed to the holder 1 by the stopper plate 3, the tip surface 33 of the stopper plate 3 is located rearward of the inner side surface 114 of the long groove 11 of the holder.

When mounting the liner 2 on the holder 1, first insert the inner liner 29 (FIGS. 1 and 3) into the long groove 11 of the holder 1, and then insert the main bodies 20 of the left and right liners 2, respectively. . And, for example,
First, on the left side of the holder 1, the thin portion 32 of the stopper plate 3 is positioned on the flange 21 of the liner 2, and the thick portion 34 of the stopper plate 3 is brought into contact with the side frame 18. Then, the bolt 36 is screwed into the bolt hole 181 of the side frame 18 through the mounting hole 35 of the stopper plate 3. Next, the stopper plate 3 is similarly fixed to the right liner 2.

In the slide type clamp attachment of this embodiment, the flange 21 protruding from the end of the liner 2 is used.
And the flange 21 is fixed to the holder 1 by the stopper plate 3. Therefore, even if the liner 2 is worn by the sliding of the rail, the thickness R of the main body 20 is
The rail does not come into contact with the front end surface 33 of the stopper plate 3 until all of them disappear.

Therefore, there is no need to replace the liner with a new one even if the liner itself is in a sufficiently usable state as in the conventional case. Therefore, the material of the expensive liner made of lubricious metal or the like is not wasted, and the maintenance cost can be reduced.

Further, since the tip surface 33 of the stopper plate 3 is located rearward of the inner side surface 114 of the long groove 11, the liner 2 can be used until the thickness R of the liner 2 is completely worn. . Therefore, according to this example, the liner can be used without waste, and the cost of maintenance can be reduced, so that the slide clamp attachment can be provided.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a slide clamp attachment according to an embodiment.

FIG. 2 is a left side view of the slide clamp attachment according to the embodiment.

3 is a sectional view taken along the line AA of FIG.

FIG. 4 is a side view of a forklift truck equipped with a bail clamp in a conventional example.

FIG. 5 is an operation explanatory view of a slide type clamp attachment in a conventional example.

FIG. 6 is an exploded perspective view of a bail clamp in a conventional example.

FIG. 7 is an exploded perspective view of a slide clamp attachment in a conventional example.

FIG. 8 is a side view of a slide clamp attachment in a conventional example.

[Explanation of symbols]

 1. ． ． Holder, 11. ． ． Long groove, 114. ． ． Inside surface, 2. ． ． Liner, 21. ． ． Flange, 3. ． ． Stopper plate, 33. ． ． Tip surface, R ... Liner thickness,

Claims (2)

[Claims] 1. A liner is disposed in the long groove of the holder,
A slide type clamp attachment configured to slide a rail in the liner, wherein the liner is provided with a flange protruding at an end thereof, the flange is located at an opening end of the long groove, and the flange is separately provided. A slide type clamp attachment characterized by being fixed to the above holder by a stopper plate. 2. The slide type clamp attachment according to claim 1, wherein a tip end surface of the stopper plate is located rearward of an inner side surface of the long groove.