JPH0715692U - Forklift truck - Google Patents

Abstract

(57) [Summary] [Purpose] To stabilize a transported object and a forklift truck when carrying the transported object by a forklift truck so that the transportation work can be performed quickly and safely. [Structure] The forklift vehicle A includes a traveling unit 1, a lift unit 2, and a moving device 3. The running unit 1 has a chassis 10 and is run by crawlers 12, 12. Chassis 1
The lift unit 2 is attached to 0 so as to be movable back and forth. The lift unit 2 includes a hydraulic motor 30, a drive gear 31, and an orbital gear 3.
It is driven via a moving device 3 constituted by 2. The lift portion 2 is a fork 2 that is lifted and lowered by a lifting cylinder S.
Have four. On the upper part of the traveling unit 1, there is provided a mounting table 4 on which a load can be mounted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a forklift truck. More specifically, the present invention relates to a forklift truck that can stably transport long objects.

[0002]

[Prior art]

 At various construction sites such as civil engineering, forklift trucks are used to transport heavy and long objects such as gutter blocks. Conventional forklift trucks used at various construction sites have two pawls that can be raised and lowered at the front, and lifted up the transported goods.

[0003]

[Problems of the prior art]

 However, the above-mentioned conventional forklift truck has the following problems. (A) Cargo items such as gutter blocks are always located at the front of the forklift truck during transportation. Forklift trucks are designed so that they do not hinder traveling as long as the load is within the allowable weight, but imbalance is inevitable. For this reason, at a site where the unevenness or slope of the running place is slightly steep, there is a risk that the forklift truck may fall over, and quick work cannot be performed. (B) The distance between the two claws provided on a forklift truck is not so wide as to be able to handle a short load. For this reason, when the transported object is a long one such as a gutter block, even if the central portion is lifted up, the balance is unbalanced and there is a risk of falling during transportation.

[0004]

[Means for Solving the Problems]

 Means of the present invention taken to solve the above problems are as follows. The first means is a forklift truck that includes a traveling unit, a lift unit that is provided in the traveling unit and that can move the traveling unit back and forth, and a moving unit that moves the lift unit.

A second means is a forklift truck according to the first means, in which an upper part of the traveling part is provided with a mounting table on which a load lifted by the lift part can be placed.

[0006]

[Action]

 Lift the load by the lift section of a forklift truck. When the lift section is moved to the center of the traveling section by the moving means while holding the conveyed article, the forklift truck is stabilized because the conveyed article is located near the center of gravity of the traveling section. In the case where the load table is provided, if the load is long such as a gutter block, the load part should be lowered and placed on the load table with the lift part moved to the center of the traveling part. You can When placed on the platform, the width of the holding part is wider than when it is held by the lift part, so the transported goods are stable.

[0007]

【Example】

 The present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a perspective view showing an embodiment of a forklift truck according to the present invention, FIG. 2 is a schematic front view showing a state in which a load is lifted by a lift portion, and a schematic front view with a part omitted, and FIG. 3 is a movement of the lift portion. It is a schematic side view which shows. Reference numeral A denotes a forklift truck, which includes a traveling unit 1, a lift unit 2, and a moving device 3 that is a moving unit.

The traveling unit 1 has a chassis 10. A cab 11 is provided at the rear of the chassis 10. A prime mover (not shown) is provided below the cab 11. In addition, 110 is an operation part and 111 is a seat. Crawlers 12, 12 driven by a prime mover are provided on both sides of the chassis 10. On both sides of the chassis 10, movement guide portions 13 having a U-shaped cross section are provided along the length direction of the chassis 10. The lift portion 2 is movably attached to the movement guide portions 13, 13.

The lift unit 2 includes a moving table 20, a lift guide unit 21, and a lift frame 22. On both sides of the moving table 20, there are provided moving guides 13 and moving rollers 201 which are mounted and mounted in the moving guides 13. Elevating guides 21, 21 having a U-shaped cross section are provided upright at both ends of the upper surface of the movable table 20. A base frame 23 is additionally provided on the rear side of the elevating guide portions 21, 21 so as to reinforce the elevating guide portions 21, 21. An elevating cylinder S having substantially the same height as the base frame 23 is provided upright on the front of the movable table 20.

Elevating rollers (not shown) are inserted into the elevating guides 21 and 21 inside the elevating guides 21 and 21, and an elevating frame 22 is attached so as to be able to ascend and descend. At the bottom of the elevating frame 22, a fork 24 having two claws is provided substantially horizontally. A protective frame 25 is provided at the middle part of the elevating frame 22 to prevent the elevating guide parts 21, 21 from being damaged by the contact of a transported object. On the back surface of the protective frame 25, attachments 251 for attaching the ends of the lifting drive chain C are provided in two places.

Sprockets 26, 26 are provided on both sides of the rod head of the lifting cylinder S. An attachment 27 is fixed to the upper part of the cylinder portion of the lifting cylinder S. Then, on both sides of the lifting cylinder S, two lifting drive chains C have one end fixed to the attachment 27 and wound around the sprockets 26, 26, and the other end fixed to the attachment 251 to be attached. There is. With this structure, if the lifting cylinder S is operated and the rod is expanded and contracted, the lifting frame 22, that is, the fork 24 can be lifted and lowered with a stroke twice the lifting stroke of the rod.

The moving table 20 is provided with a hydraulic motor 30 that constitutes the moving device 3. The moving device 3 includes the hydraulic motor 30, a pinion-shaped drive gear 31 attached to the drive shaft of the hydraulic motor 30, and a rack-shaped track gear 32 that is arranged so as to mesh with the drive gear 31. The orbit gear 32 is fixedly provided to the chassis 10 between the movement guide portions 13 and 13 in parallel with these.

Stoppers 131 (shown in FIG. 2) for stopping the moving roller 201 at predetermined positions are provided at the front and center portions of the moving guides 13, 13, but the stop position is limited to this. Instead, the meshing between the drive gear 31 and the orbital gear 32 can be utilized to stop at any position between the front and rear stoppers 131. In addition, 301 is an oil line, and 302 is a suspension wire that suspends the oil line 301 so as not to interfere with the movement of the lift portion 2.

With this structure, when the hydraulic motor 30 is actuated and the drive gear 31 is rotated in the forward and reverse directions, the lift portion 2 is moved from the front portion of the traveling portion 1 to a substantially central portion along the movement guide portions 13, 13. You can move back and forth between. Further, a mounting table 4 on which a transported object can be mounted is provided near the front of the upper part of the traveling unit 1. The mounting table 4 is horizontally fixed to the upper portions of the movement guide portions 13 and 13 so as to project to the upper portion of the crawler 12.

The method of use and operation of this embodiment will be described with reference to FIGS. 1 to 3. When the work is started, the lift section 2 of the forklift truck A is positioned in front of the traveling section 1, the lifting cylinder S of the lift section 2 is operated, the rod is extended, and the fork 24 transports a cargo B such as a gutter block B ( (Illustrated in FIG. 2). While holding the object B to be transported by the fork 24, the hydraulic motor 30 of the moving device 3 is operated to move the lift section 2 to the center of the traveling section 1. As a result, the transported object B is located near the center of gravity of the traveling unit 1, so that the forklift vehicle A becomes stable.

With the lift unit 2 in the center of the traveling unit 1, the lifting cylinder S is operated to contract the rod to lower the transported object B and place it on the mounting tables 4 and 4. Since the loading tables 4 and 4 are located on both sides of the lift unit 2, when the article B is placed on the loading tables 4 and 4, the width of the supporting portion of the article B is widened and the article B is stabilized. In this way, if the forklift truck A transports the transported article B, the forklift truck A has a good balance, and since the transported article B is also stable on the mounting tables 4 and 4, the traveling place is uneven. Even in a large number of places, there is little risk that the forklift truck A will fall or the transported object B will fall, and the work can be done quickly. Further, since the forklift truck A has a structure in which it travels by the crawlers 12, 12, it is possible to make a small turn, and it is easy to work even on an uneven ground such as a construction site or a place where the ground is weak. The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims for utility model registration.

[0017]

[Effect of device]

 The present invention has the above configuration and has the following effects. (A) If the lifted part of the forklift truck lifts the transported object and the lifted part is moved to the center of the traveling part by the moving means while holding the transported object, the transported object should be located near the center of gravity of the traveling part. Therefore, the forklift truck is stable even while holding the load. Therefore, even if the unevenness or slope of the running place is slightly tight, there is little risk of falling, and quick transportation work is possible.

(B) In the case where the carrying table is provided on the upper part of the traveling part, when the transported object is long like the transported object, the lift part is moved to the central part of the traveling part. The load can be lowered and placed on the platform. When the load is placed on the platform, the width of the load holding part is wider than when the load is held by the lift, and the load is stable, so there is less risk of falling.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a forklift truck according to the present invention.

FIG. 2 is a schematic front view with a part omitted showing a state in which a transported article is lifted by a lift portion.

FIG. 3 is a schematic side view showing the movement of a lift portion.

[Explanation of symbols]

 A Forklift truck 1 Traveling section 2 Lifting section 3 Moving device 4 Mounting table

Claims (2)

[Scope of utility model registration request] 1. A forklift truck comprising: a traveling unit; a lift unit provided on the traveling unit; and a lift unit capable of moving the traveling unit back and forth; and a moving unit for moving the lift unit. 2. A loading table is provided on an upper side of the traveling section, on which a load lifted by the lifting section can be loaded.
Forklift truck described.