JP3806582B2 - Battery powered forklift - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery-type forklift, and more particularly to a technique related to a frame structure.
[0002]
[Prior art]
FIG. 4 shows the structure of a body frame of a conventional battery-type forklift, particularly a counter-type forklift. The vehicle body frame 23 on which the battery is mounted and the traveling device, the steering device, and the cargo handling device are mounted has a side plate 23a fixed to each end edge of the front plate 23b and the rear plate 23c in the width direction of the frame 23. The partition plates 23g and 23h are inserted and fixed in the width direction of the frame 23 with an interval corresponding to the size of the battery B in the vicinity of a substantially middle portion of the side plate 23a. The storage space is formed integrally.
[0003]
[Problems to be solved by the invention]
By the way, in the battery-type forklift as described above, the size of the battery mounted on the vehicle body frame differs depending on the model. On the other hand, since the body frame has an integral structure, it is necessary to individually manufacture body frames of a plurality of sizes according to the size of the battery.
[0004]
The present invention has been made to solve the above-described problems, and provides a battery-type forklift capable of sharing parts, improving productivity, and reducing costs by modularizing a body frame. It is intended to do.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a battery-type forklift comprising a battery mounted on a vehicle body frame and equipped with a cargo handling device and a traveling device using the energy of the battery as a driving source. The frame is divided into a front frame, an intermediate frame, and a rear frame, and is sequentially connected to each other. The intermediate frame has a size corresponding to the size of the battery, and the front frame The rear frame is commonly used with a predetermined size , and a side plate extending in the front-rear direction of the vehicle body and a partition plate extending in the vehicle body width direction are coupled in a rectangular shape in plan view, and the side plate is connected to the battery. A flange is formed at the left and right end portions of the partition plate or the front and rear end portions of the side plates that constitute the intermediate frame body, and has a front and rear length corresponding to the size, and the front frame body and the rear frame body Above Flange formed at an end portion which is butted The inter frame, which said by fastened at the flanges fastening means, coupled between said front frame and the rear frame body and the intermediate portion frame member It is.
[0006]
In the above configuration, the vehicle body frame is composed of the divided front frame, intermediate frame, and rear frame, and the intermediate frame having a size corresponding to the size of the battery whose size can be changed has a predetermined size. The frame is assembled by connecting the front frame and the rear frame. Thus, the front frame body and the rear frame body are formed by modularizing the vehicle body frame into an intermediate frame body according to the size of the battery and a front frame body and a rear frame body of a predetermined size to be shared. Can be made common to multiple types of forklifts.
[0007]
Moreover, if only a plurality of types of side plates having front and rear lengths corresponding to the size of the battery are prepared, the intermediate frame can be configured, and the common use of parts is increased, thereby improving the productivity.
[0008]
Further, since the front frame body and the rear frame body are fastened to the intermediate frame body by the fastening means by the flange , the front frame body and the rear frame body can be easily assembled and the assembling work becomes quick.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a battery-type forklift according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a battery-powered forklift according to one embodiment. This battery-type forklift 1 is called a counter type, and is a balance between a frame 2, a cargo handling device 3 that is tiltably mounted in front of the frame 2, and a load loaded on the cargo handling device 3. The counter weight 12 is detachably attached to the rear of the frame 2, and the battery B is mounted on the frame 3 between the cargo handling device 3 and the counter weight 12.
[0010]
A front wheel 4 connected to the travel drive device 5 and a rear wheel 6 for changing the direction of travel are mounted on the frame 2, and the frame 2 between the front wheel 4 and the rear wheel 4 is mounted on the frame 2. A battery cover 10 covering the upper surface of the battery B protruding upward from the upper edge of the battery and a seat 11 mounted on the front upper side of the battery cover 10 are disposed.
[0011]
The cargo handling device 3 is disposed at the rear of the mast 30 that is tiltably mounted to the front of the frame 2, the fork 31 that moves up and down along the mast 30, and moves the fork 31 up and down. The lift cylinder 32 includes a lift cylinder 32 and a tilt cylinder 33 that has one end fixed to the frame 2 and the other end fixed to the mast 30 and tilts the mast 30 in the front-rear direction in accordance with the expansion and contraction of the rod.
[0012]
2 shows the shape of the side surface of the frame 2, and FIG. 3 shows the configuration of the intermediate frame 21 of the frame 2. The frame 2 is mounted with a front frame 20 on which the cargo handling device 3 and the front wheel 4 are mounted, an intermediate frame 21 whose size can be changed according to the size of the battery B, and a rear wheel 6 and a counterweight 12. It consists of a rear frame 22.
[0013]
The front frame 20 is formed by connecting a side plate 20b extending in the front-rear direction of the vehicle body and a front plate 20c extending in the width direction of the vehicle body in a U-shape in plan view. At both rear ends of the side plate 20, a flange 20 a that is abutted against the partition plate 21 a of the intermediate frame 21 is fixed. A curved notch is formed at the front lower side of the side plate 20b, and a bracket 20f for mounting the front wheel 4 is fixed in the vicinity of the notch of the side plate 20b.
[0014]
The intermediate frame 21 extends in the front-rear direction of the vehicle body, and includes a side plate 21b corresponding to the front-rear length size of the battery B and a partition plate 21a extending in the width direction of the vehicle body coupled in a rectangular shape in plan view. Has been. A bottom plate 21 c for mounting the battery B is coupled to the lower part of the intermediate frame 21. By using the intermediate frame 21, various sizes of the battery B can be handled.
[0015]
The rear frame 22 is formed by connecting a side plate 22b extending in the front-rear direction of the vehicle body and a rear plate 22c extending in the width direction of the vehicle body in a U-shape in plan view. A flange 22a to be abutted against the partition plate 21a of the intermediate frame 21 is fixed to both front ends of the side plate 22b. A curved notch is formed below the side plate 22b so as not to be an obstacle when the rear wheel 6 turns. A bracket 22d for mounting the rear wheel 6 is fixed to the lower end of the rear plate 22c of the rear frame body 22, and a counter weight mounting member 22e for mounting the counter weight 12 is fixed to the upper end of the rear plate 22c. The
[0016]
According to the forklift of this embodiment, the frame 2 is divided into the front frame 20, the intermediate frame 21, and the rear frame 22, and the intermediate frame 21 affected by the size of the battery B. Only a plurality of types are prepared, and the front frame body 20 and the rear frame body 22 share one predetermined size, thereby making it possible to modularize and share parts, improve productivity, and reduce costs. Can be achieved.
[0017]
Further, the intermediate frame 21 formed by connecting the side plate 21b extending in the front-rear direction of the body frame 2 and the partition plate 21a extending in the width direction of the body frame 2 in a rectangular shape in plan view is configured such that the front-rear length of the side plate 21 is set to the battery. By changing according to the size of the battery, it is possible to easily cope with various sizes of the battery, and it is possible to further promote the common use of parts.
[0018]
Further, the intermediate frame 21 and the front frame 20 are secured to the intermediate frame 21 by fastening means such as bolts by the flanges 20a and 22a of the front frame 20 and the rear frame 22. Since it can couple | bond with the rear part frame 22, it can assemble easily and can perform an assembly | attachment operation | work rapidly.
[0019]
The present invention is not limited to the configuration of the above embodiment, and various modifications can be made. For example, instead of the flanges 20a and 22a of the front frame body 20 and the rear frame body 22, plate-like members can be used as the structural members of the front frame body 20 and the rear frame body 22, and the intermediate frame It is also possible to form a flange portion on the body 21 side. Further, the modularization of the components can be further promoted by separating the part where the frame size is changed frequently and the part where the change is small.
[0020]
【The invention's effect】
As described above, according to the battery-type forklift of the present invention, the vehicle body frame is divided into the front frame, the intermediate frame, and the rear frame, and the required intermediate frame according to the size of the battery. By using a common front frame and rear frame, the frame can be modularized, components can be shared, and productivity can be improved.
[0021]
Furthermore, by extending the side plate of the intermediate frame to the front-rear direction of the body frame, the number of parts that need to be changed can be reduced, and batteries of various sizes can be handled.
[0022]
Further, by attaching the front frame body and the rear frame body to the intermediate frame body by the flange, the attachment work is facilitated, and the work efficiency is improved.
[Brief description of the drawings]
FIG. 1 is a side view of a battery-type forklift according to an embodiment of the present invention.
FIG. 2 is a partial side view of the same frame.
FIG. 3 is a perspective view showing a configuration of an intermediate frame and a rear frame of the same frame.
FIG. 4 is a partial side view of a conventional battery-type forklift.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Battery type forklift 2 Frame 3 Handling apparatus 20 Front part frame body 21 Middle part frame body 22 Rear part frame body 20a Flange 21a Partition plate 22a Flange B Battery

Claims (1)

In a battery-type forklift equipped with a battery mounted on a vehicle body frame and equipped with a cargo handling device and a traveling device using the energy of the battery as a drive source,
The vehicle body frame is divided into a front frame, an intermediate frame, and a rear frame, and sequentially connected to each other,
The intermediate frame is sized according to the size of the battery, the front frame and the rear frame are of a predetermined size , and extend in the longitudinal direction of the vehicle body. The side plate and the partition plate extending in the vehicle body width direction are combined in a rectangular shape in plan view,
The side plate has a longitudinal length corresponding to the size of the battery;
Flange is formed at the left and right end portions of the partition plate constituting the intermediate portion frame body or the front and rear end portions of the side plate, and flanges are formed at the ends of the front frame portion and the rear frame portion that are brought into contact with the intermediate portion frame body. A battery-type forklift characterized in that the intermediate frame, the front frame, and the rear frame are joined by fastening the flanges with fastening means .

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