JP2552749B2 - Reach forklift straddle arm structure - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a straddle arm structure for a reach forklift, and more particularly, a straddle arm for a reachforklift in which a part of a liner is detachably attached to the straddle arm. Regarding the structure.

(Prior Art) Generally, a reach forklift has a straddle arm extending in the front-rear direction of a vehicle, and an inner peripheral surface of the arm moves a fork in the front-rear direction via a reach roller. And after putting the luggage on the fork,
By pulling the fork toward the vehicle along the straddle arm, the length of the vehicle in the front-rear direction can be shortened and the turning radius can be reduced when the luggage is transported. It can be done easily.

As a conventional straddle arm structure of this type of reach forklift, for example, a structure shown in FIG. 4 is known. In FIG. 4, reference numeral 1 denotes a straddle arm which is attached to the front of the vehicle and extends in the front-rear direction of the vehicle. A reach roller 2 is slidably provided on the inner peripheral surface 1a of the arm 1, 2 is attached to a fork (not shown) via a reach carriage (not shown).
Therefore, the fork can move in the front-rear direction of the vehicle along the straddle arm 1. A liner 3 is attached to the inner peripheral surface 1a of the straddle arm 1 by welding, and the liner 3 extends along the straddle arm 1. The roller 2 is provided on the upper surface 3a of the liner 3.
Are in contact with each other, and the liner 3 guides the roller 2 so as not to create a gap between the inner peripheral surface 1a of the straddle arm 1 and the roller 2 in order to facilitate sliding of the roller 2. . Further, a bolt 5 is attached to the front end of the liner 3, and the bolt 5 contacts the roller 2 to prevent the roller 2 from moving forward from the front end, so that the roller 2 comes out of the straddle arm 1. Is being prevented.

In the straddle arm structure of this reach forklift, the fork is moved forward along the straddle arm 1 to put the load on the fork, and then moved back along the straddle arm 1 again to transfer the load in this state. . For this reason, the length of the vehicle in the front-rear direction can be shortened at the time of carrying the luggage, and the turning radius of the vehicle can be made small to facilitate the carrying work in a narrow passage or the like.

[Problems to be Solved by the Invention]

However, in such a conventional reach forklift straddle arm structure, since the liner 3 is attached to the inner peripheral surface 1a of the straddle arm 1 by welding, an indentation or the like is formed on the liner 3 as the roller 2 slides. There was a problem that the repair would be troublesome in the case of occurrence. In particular, when the fork is placed on the fork when the fork moves to the front side in the reach-out state, the liner 3
The indentation is liable to occur on the front end side, and the repair was very troublesome because the liner 3 was purposely replaced to repair the front end side.

(Object of the Invention) Therefore, an object of the present invention is to facilitate the repair work of the liner by making the front end side of the liner, which is likely to be indented by the roller, detachable from the straddle arm.

(Means for Solving the Problem) In order to achieve the above object, the straddle arm structure of the reach forklift according to the present invention extends in the front-rear direction of the vehicle, and the fork extends in the front-rear direction via the reach roller on the inner peripheral surface. A moving straddle arm, a liner attached to the inner peripheral surface of the straddle arm along the arm, and an upper surface abutting the reach roller to guide the roller, and a liner attached to the front end of the liner. In a straddle arm structure of a reach forklift including a restricting member that restricts sliding forward of the liner, the liner is divided into a first liner and a second liner by forming an engaging portion on a dividing surface. , The second liner is fixed to the inner peripheral surface of the straddle arm excluding the front end side of the straddle arm, and the first liner is set to the front end side. After making it detachable and engaging the first liner with the second liner,
It is attached to the straddle arm by a regulation member.

(Operation) In the present invention, the liner is formed of the first liner and the second liner with the engaging portion formed on the dividing surface, and the second liner is provided.
After the liner is fixed to the inner peripheral surface of the straddle arm excluding the front end side of the straddle arm, the first liner is detachably attached to the front end side of the straddle arm, and the first liner is fitted to the second liner. It is attached to the straddle arm by a restriction member. Therefore, only the front end side of the liner where the indentation of the reach roller is likely to occur is detached from the straddle arm, and the liner repair work becomes easy.

(Example) Hereinafter, the present invention will be described with reference to the drawings.

1 to 3 are views showing an embodiment of a straddle arm structure of a reach forklift according to the present invention. The same components as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

 First, the configuration will be described.

In FIG. 1, 9 is a reach forklift,
A straddle arm 1 is attached to the lower portion of the forklift 9. The straddle arm 1 extends in the front-rear direction of the vehicle and moves the fork 10 in the front-rear direction with a reach roller (not shown) interposed. As shown in FIG. 2, the straddle arm 1 has a liner 11 attached to the inner peripheral surface 1 a, and the liner 11 extends along the straddle arm 1. The upper surface 11a of the liner 11 is in contact with a reach roller (not shown), and the liner 11 has a straddle arm 1 to facilitate sliding of the reach roller.
And a reach roller to prevent a gap from being formed between the inner peripheral surface 1a of the straddle arm 1 and the tilt roller. The liner 11 is divided into a first liner 12 and a second liner 13 as shown in FIG. The dividing surface 13a of the second liner 13 is formed in a groove-shaped V-shape, and the dividing surface 12a of the first liner 12 is formed in a V-shaped protrusion so as to be engaged with the second liner 13.
It is formed in a V shape, and the dividing surfaces 12a and 13a form an engaging portion. The second liner 13 is the inner peripheral surface of the straddle arm 1 excluding the front end side of the straddle arm 1.
It is fixed to 1a by welding, and the first liner 12 is detachable from the straddle arm 1. A through hole 12b is formed in the first liner 12, and a bolt 14 as a regulating member is meshed with the through hole 12b.
First liner 12 is straddle arm 1 with bolt 14
Mounted on When the tilt roller moves forward, the bolt 14 contacts the roller to prevent the roller from moving forward from the front end portion of the straddle arm and prevents the roller from slipping out of the straddle arm.

In the straddle arm structure of the reach forklift as described above, since the fork 10 is moved forward along the straddle arm 1 to place the load on the fork 10,
The frequency of such a reach-out state is very high,
At this time, an indentation is likely to occur on the front end side of the liner 11. In this embodiment, the second liner 13 is fixed to the straddle arm 1 and the first liner 12 is detachable from the straddle arm 1. Therefore, the first liner 12 is removed from the straddle arm 1 and a new liner (hereinafter , This liner is also called the first liner 12, and the dividing surface 12a of the first liner 12 is changed to the dividing surface 13a of the second liner 13.
The first liner 12 can be replaced by simply attaching the first liner 12 to the straddle arm 11 with the bolt 14 after engaging with the first liner 12, and the liner can be easily repaired. In addition, the split surface 13a of the second liner 13
Is formed in a groove-shaped V-shape, and the dividing surface 12a of the first liner 12 is formed in a protruding V-shape so that the dividing surface 12a can be engaged with the dividing surface 13a. When the first liner 12 is engaged with the first liner 12, the first liner 12 does not move in the left-right direction of the vehicle, and the reach roller can be prevented from falling off the first liner 12. Furthermore, since only the front end side of the liner 11 is replaced, the first liner
It is possible to reduce the size of 12 and facilitate heat treatment such as quenching for increasing the surface hardening. Furthermore,
Since the first liner 12 does not need to be welded, it can be prevented from hardening.

In this embodiment, the dividing surface 13a of the second liner 13 is formed into a groove-shaped V-shape and the dividing surface of the first liner 12 is formed.
The engaging portion is formed by forming the protruding portion 12a in a V-shape, but is not limited to this, and the dividing surface 13a of the second liner 13 is not limited to this.
Are formed in a protruding V-shape and the dividing surface 12a of the first liner 12 is formed in a groove-shaped V-shape to form an engaging portion, or the dividing surfaces 12a and 13a are formed in other groove shapes. It may be formed in a protruding shape. The point is that the first liner 12 may be engaged with the second liner 13 so as not to move in the left-right direction of the vehicle.

(Effects) According to the present invention, the liner is formed by the first liner and the second liner by forming the engaging portion on the split surface, and the second liner is formed on the inner peripheral surface of the straddle arm excluding the front end side of the straddle arm. Since the first liner is fixedly attached to and detached from the front end side of the straddle arm, and the first liner is engaged with the second liner, it is attached to the straddle arm by the restricting member, so that an indentation of the reach roller occurs. Only the front end side of the liner, which is easy to remove, can be removed from the straddle arm, so that the liner can be easily repaired.

[Brief description of drawings]

1 to 3 are views showing an embodiment of a straddle arm structure for a reach forklift according to the present invention. FIG. 1 is a block diagram of the reach forklift, and FIG. 2 is a schematic block diagram of the straddle arm. FIG. 4 is a schematic diagram of the main parts of the first and second liners, and FIG. 4 is a schematic configuration diagram of a straddle arm structure of a conventional reach forklift. 1 ... Straddle arm, 1a ... Inner surface, 9 ... Fork, 11 ... Liner, 12 ... First liner, 12a ... Dividing surface, 13 ... Second liner, 13a ... Dividing surface, 14 ...... Bolt (regulating member).

Claims (1)

(57) [Claims] 1. A straddle arm that extends in the front-rear direction of a vehicle, and a fork moves in the front-rear direction through a reach roller on the inner peripheral surface, and a straddle arm that is attached to the inner peripheral surface along the arm and has an upper surface. A straddle for a reach forklift including a liner that contacts the reach roller to guide the reach roller, and a restricting member that is attached to the front end of the liner and restricts the reach roller from sliding forward from the front end. In the arm structure, the liner is divided into a first liner and a second liner by forming an engaging portion on a split surface, and the second liner is fixed to the inner peripheral surface of the straddle arm excluding the front end side of the straddle arm. First
A straddle arm structure for a reach forklift characterized in that the liner is detachably attached to the front end side, the first liner is engaged with the second liner, and then attached to the straddle arm by a restricting member.