JP4611654B2 - Battery forklift body structure - Google Patents

Description

  The present invention relates to a vehicle body structure of a battery forklift that loads and unloads a battery from the side of the vehicle body.

  Conventionally, as disclosed in Patent Document 1 and Patent Document 2, there are battery forklifts that load and unload a battery from the side of the vehicle body. This type of battery forklift is provided with a battery storage chamber that is opened in the left-right direction in the body frame, and a head guard is provided so as to cover the top of the body frame.

  By the way, in a battery forklift that suspends and unloads the battery, a large notch is formed in the vehicle body width direction from either the left or right side of the head guard to insert a sling wire that suspends the battery. Yes. On the other hand, in the type in which the battery is loaded and unloaded from the side of the vehicle body, since it is not necessary to provide such a notch, as described in Patent Document 2, the notch is eliminated and the head guard is strengthened. be able to.

JP 2002-265191 A JP 2003-118989 A

  As described above, in the battery forklift of a type in which the battery is loaded and unloaded from the side of the vehicle body, the head guard can be strengthened. However, due to the structure in which the battery storage chamber is opened in the left-right direction, it is difficult to ensure the strength of the vehicle body frame. For example, as described in Patent Document 1, either the left or right side of the battery storage chamber is A technique is adopted in which one is opened and the other is closed with a structural member.

  Therefore, an object of the present invention is to provide a high-strength battery forklift body structure in place of such a conventional technique.

To achieve the above object, the vehicle forklift vehicle body structure of the present invention is a battery forklift vehicle body structure in which a head guard is provided so as to cover an upper part of the vehicle body frame, and the vehicle body frame includes a bottom plate and the bottom plate. includes front and rear of the upright plate erected apart the longitudinal direction above, is defined by a top plate provided continuously on the top of both said upright plate, the battery housing chamber formed by openings in the left and right, the the front frame is provided toward the front upright plate to the front, the rear frame is provided toward from the rear upright to the rear, the front frame comprises a front plate which is erected on a front portion thereof, the front A support member that is provided at each of the left and right ends of the plate and supports the left and right front pillars of the head guard. Comprising a post for supporting the left and right rear pillars of the erected across the head guard respectively, and further, the right and left beam members provided respectively connected to the above each strut top and the top plate, the beams members, A technical means is employed which is joined to the upper surface of the top plate and extends forward from the joining portion of the top plate and the rear plate .

  According to the present invention, the left and right front pillars of the head guard are connected to the front frame via the support members, and the left and right rear pillars are connected to the rear frame via the support columns. The front frame and the rear frame are connected, and the battery storage chamber and the rear frame are connected via a beam member, so that sufficient vehicle body strength can be obtained even though the battery storage chamber is open to the left and right. Obtainable. Of course, the head guard can be firmly supported with respect to the vehicle body frame by the support member and the support column.

Further, in the above-described configuration, the beam member is bonded to the upper surface of the top plate and extends forward from a bonding portion between the top plate and the rear plate. Since the upper part of the vehicle body frame including the top plate can be firmly configured, the vehicle body strength can be further increased.

  As described above, according to the present invention, it is possible to realize a vehicle forklift body structure having high strength.

As shown in FIG. 1, the vehicle body structure of a battery forklift according to an embodiment of the present invention mainly includes a vehicle body frame 1 and a head guard 30.
The vehicle body frame 1 includes a battery storage chamber 2 whose left and right side surfaces are open. The battery storage chamber 2 includes a bottom plate 3 and front and rear standing plates 4 and 5 raised upward from the bottom plate 3. The top plate 6 connecting the upper edges of the compatible plates 4 and 5 is partitioned. The vehicle body frame 1 is welded to the front surface of the upright plate 4 and welded to the front frame 7 welded to the portion of the bottom plate 3 protruding forward from the front plate 4 and the rear surface of the rear plate 5. And a rear frame 8 welded to a portion protruding rearward from the rear plate 5 of the bottom plate 3.
A head guard 30 is provided from the front frame 7 to the rear frame 8 so as to cover the body frame 1 from above.

  As shown in FIG. 2, the front frame 7 is welded to the bottom plate 3 and the front plate 4 at the rear portion thereof, and the lateral plates 9 are provided in parallel to the longitudinal direction of the vehicle body, and the lateral surfaces of the lateral plates 9. The left and right step plates 10 welded to the front plate 4 are welded so as to connect the front portions of the left and right lateral plates 9 and the front portion of the step plate 10, and are raised slightly diagonally to the rear of the vehicle body. The front plate 11 is provided. Further, the front frame 7 is provided with a support member 12 which is raised from the front part of the left and right step plates 10 along the left and right end surfaces of the front plate 11 and fixed by welding.

As shown in FIG. 2, the front portion of the rear frame 8 is welded to the bottom plate 3 and the rear plate 5, and is welded to an axle support 13 that supports a rear axle (not shown) and a rear end portion of the axle support 13. An end beam 14 having an L-shaped cross section and left and right rear side beams 15 welded to the left and right ends of the end beam 14 and the rear plate 5 are provided. Further, left and right columns 16 fixed by welding are provided on the rear surfaces of both end portions of the upright side portion 14a of the end beam 14.
Each column 16 has a height equal to the height from the bottom portion 14 b of the end beam 14 to the top surface of the top plate 6, and the upper portions of the left and right columns 16 are connected to the top plate 6 by the left and right beam members 17. . Here, the beam member 17 is joined to the upper surface of the column 16 and the upper surface of the top plate 6 by welding, and as shown in FIG. It is extended and provided.
As a result, the space 20 (hereinafter referred to as an equipment storage chamber) 20 formed between the rear plate 5 and the column 16 over the height from the upper surface of the axle support 12 to the upper surface of the top plate 6 has left and right side surfaces. It is opened and the upper surface is opened.

  In the battery forklift of this embodiment, since the battery B is taken in and out from the right side surface of the battery storage chamber 2, as shown in FIG. 1 and FIG. The reinforcing plates 18 that connect the standing plates 4 and 5 are welded. However, when the battery B is to be taken in and out from the left side surface of the battery storage chamber 2, the vehicle body frame 1 may be configured without the reinforcing plate 18.

  As shown in FIG. 1, a head guard 30 is provided on the vehicle body frame 1 configured as described above. The head guard 30 includes left and right side beams 31 extending in the front-rear direction, left and right front pillars 32 extending from the front end portions of the side beams 31, and left and right rear pillars 33 extending from the rear end portions of the side beams 31. And a lattice-shaped canopy 34 provided between the left and right side beams 31. Here, the side beam 31 and the rear pillar 33 are made of a series of pipe members, and are smoothly curved from the rear part of the side beam 31 to the upper part of the rear pillar 33.

  The front pillar 32 is fixed to the step plate 10 and the support member 12 by welding, with the lower ends thereof along the corresponding support members 12 and the lower end surfaces thereof being in contact with the upper surface of the step plate 10. Also, the rear pillar 33 is fixed to the support column 16 and the bottom side portion 14b by welding with the lower ends thereof along the corresponding support columns 16 with the lower end surfaces being in contact with the upper surface of the bottom side portion 14b of the end beam 14, respectively. A positioning member 19 for receiving the lower portion of the rear pillar 33 from the inner side in the vehicle width direction is provided on the upper surface of the bottom side portion 14b in order to align the position of the lower portion of the rear pillar 33 in the lateral direction.

As shown below, each device is provided in the vehicle body structure configured as described above.
As shown in FIGS. 1 and 3, a seat 21 on which a driver sits is provided on the top surface of the top plate 6, and left and right front wheels 22 as drive wheels and a fork are raised and lowered on a lateral plate 9 of the front frame 7. A handling device 23 provided as possible is assembled, and various operation devices including a steering handle 24 for operating the battery forklift are assembled on the front plate 11. A rear axle having left and right rear wheels 25 as steering wheels is assembled to the axle support 12 of the rear frame 8, and a counterweight 26 is assembled to the rear frame 8.
The left and right side surfaces of the battery storage chamber 2 are respectively covered with an openable and closable battery cover 27. By opening the battery cover 27, the battery storage chamber 2 is opened and the battery B is taken in and out. Furthermore, the opening on the side surface of the device storage chamber 20 is covered with a side cover 28, the opening on the top surface is covered with a top cover 29, and the device storage chamber 20 is opened by opening the side cover 28 and the top cover 29. Various devices are taken in and out, and the devices stored in the device storage room 20 are maintained.

Now, according to the battery forklift having the vehicle body structure described above, the front frame 7 of the vehicle body frame 1 and the front pillar 32 of the head guard 30 are firmly connected via the support member 12, and the rear of the vehicle body frame 1. Since the frame 8 and the rear pillar 33 of the head guard 30 are firmly connected via the support column 16 and the top plate 6 and the support column 16 are firmly connected via the beam member 17, the vehicle body strength can be increased. Further, since the battery storage chamber 2, the front frame 7, and the rear frame 8 are firmly connected by the bottom plate 3, the vehicle body strength can be increased.
Moreover, since the battery B is placed on the bottom plate 3 of the vehicle body frame 1, the overall height of the vehicle body can be lowered, the center of gravity of the vehicle body is lowered, and the stability of the vehicle body is improved. Further, since the battery B is taken into and out of the battery housing chamber 2 from the right side of the vehicle body, it is not necessary to form a notch for inserting a sling wire for suspending the battery B in the head guard 30, and the strength of the head guard 30 is increased. Can be increased.

It is a perspective view of the present invention. It is a perspective view of the present invention. It is a side view of the present invention.

DESCRIPTION OF SYMBOLS 1 Body frame 2 Battery storage chamber 3 Bottom plate 4 Front stand plate 5 Rear stand plate 6 Top plate 7 Front frame 8 Rear frame 11 Front plate 12 Support member 16 Support column 17 Beam member 20 Equipment storage chamber 30 Head guard 31 Side beam 32 Front pillar 33 Rear pillar

Claims (1)

A body structure of a battery forklift in which a head guard is provided so as to cover an upper portion of a body frame,
The body frame includes a bottom plate, front and rear of the upright plate erected apart the longitudinal direction on the bottom plate, is defined by a top plate provided continuously on the top of both said upright plate, and opens to the right and left comprising a formed battery housing chamber, the front frame is provided toward the front from the front vertical plate, and the rear frame are provided toward from the rear upright to the rear,
The front frame includes a front plate erected at the front portion thereof, and support members that are provided at both left and right ends of the front plate and support the left and right front pillars of the head guard, respectively, and the rear frame, It is provided with pillars that are erected on the left and right ends of the rear part and support the left and right rear pillars of the head guard,
In addition, left and right beam members are provided by connecting the upper portions of the columns and the top plate, the beam members are joined to the top surface of the top plate, and the top plate and the rear plate. A vehicle forklift vehicle body structure characterized by extending forward from the joint portion of the battery forklift.

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