JPH02234884A - Body structure of industrial vehicle - Google Patents

Abstract

PURPOSE:To facilitate the assembling by fixing connecting members to the respective front and rear end parts of left and right side frames, and connecting a front frame component and a rear frame disposed in the front and rear of the left and right side frames through the connecting members. CONSTITUTION:A right side frame 1 having a hollow part the inside of which is an operating oil tank 5 and a left side frame 2 having a hollow part the inside of which is a fuel tank 6 are provided, and brackets 1a, 2a having screw holes 7, 11 as connecting members and brackets 1b, 2b are fixed to the respective rear and front end parts of the side frames 1, 2. A rear frame 3 is also provided, brackets 3a, 3b having screw holes 8, 12 in the positions facing the respective brackets 1a, 2a are fixed thereto, and the opposite brackets 1a, 3a; 2a, 3b are connected to each other with bolts 9. Further, a front frame component (not shown) is connected between the brackets 1b, 2b with bolts.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the body structure of an industrial vehicle such as a forklift.

BACKGROUND OF THE INVENTION The body structure of a conventional industrial vehicle usually includes a right side frame l disposed on the right side in the vehicle width direction, and a left side frame l disposed on the left side in the vehicle width direction, as shown in Fig. 7. It comprises a side frame 2 and a rear frame 3 disposed at the rear of both side frames l and 2, and these side frames 1 and 2 and the rear frame 3 are integrally welded and fixed. It is customary. A hydraulic oil tank 5 is housed inside the right side frame 1, and a fuel tank 6 is housed inside the left side frame 2. Further, a rear axle mounting bracket l7 is fixed to the lower part of the rear frame 3, and a counterweight lower mounting bracket 14 and a counterweight upper mounting bracket 15, 16 are fixed to the rear part of the rear frame 3.

Incidentally, brackets Ib, 1b are fixed to the front ends of the side frames 1, 3, and the brackets 1b, 1b are welded and fixed to an instrument frame (not shown) disposed in front.

Problems to be Solved by the Invention However, in the conventional body structure of an industrial vehicle, when assembling a power body such as an engine to the vehicle body, it is necessary to drop the power body between the two side frames l2. On the contrary, it would be necessary to use a method of dropping both side frames 1.2 from above the power main body, which would require fairly large-scale equipment such as a hoist, and would require a lot of man-hours. There was a problem that it became.

Furthermore, since the side frames 1 and 2, the rear frame 3, and the instrument frame are integrally welded and fixed, a large-scale welding installation 6taf is required, and the heat generated during welding causes damage to the vehicle body. There is a risk that the metal parts may be distorted, and furthermore, the installation work of various piping and objects after welding, as well as the installation work of sacrificial parts, must be done in a narrow space, which reduces work efficiency. are doing.

Further, since the booth for painting performed after assembly is naturally required to be large, the area occupied by the painting equipment also increases.

Furthermore, since the side frames 1 and 2 and the rear frame 3 are integrally welded and fixed, the versatility of the vehicle body is poor. Therefore, in order to increase the variety of vehicle types, it is necessary to Another disadvantage is that it is necessary to separately design and reassemble the rear frame 3.

Therefore, the present invention solves various problems that the conventional industrial vehicle body structure has, eliminates the need for large-scale equipment for assembly, and improves workability when assembling the vehicle body. Another object of the present invention is to provide a vehicle body structure for an industrial vehicle that can increase versatility by making it possible to replace component members.

Means for Solving the Problems In order to achieve the above object, the present invention provides a right side frame and a left side frame arranged on both sides in the vehicle width direction, and a rear end portion of the right side frame and the left side frame. and a connecting member fixed to the front end, a rear frame disposed at the rear of both side frames, a front frame component disposed at the front of both side frames, and both left and right ends of the rear frame and front frame component. The vehicle body structure of the industrial vehicle is provided with a connecting member that is fixed to the side frame and connectable to the connecting members of the both side frames. The rear frame is equipped with a radiator and a muffler, and a counterweight lower mounting bracket and a counterweight upper mounting bracket are fixed to appropriate parts of the rear frame.

Further, the present invention provides a right side frame and a left side frame disposed on both sides in the vehicle width direction, a connecting member fixed to the rear end and front end of the right side frame and the left side frame, and A counterweight disposed at the rear of the frame, a front frame component disposed at the front of both side frames, and a connecting member fixed to both left and right ends of the counterweight and front frame component to connect the two side frames. The body structure of the industrial vehicle includes a connectable connecting member. Further, a hydraulic oil tank and its accessories are stored inside either one of the side frames, a fuel tank and its accessories are stored inside the other side of both the side frames, and the front frame The components include an instrument frame and a front cross member that are integrally constructed, and various levers and steering system components are assembled in advance.

According to this structure, when assembling, the hydraulic oil tank is stored inside the side frame on one side, the fuel tank is stored inside the side frame on the other side, and various parts and piping accompanying these are stored. Assemble it. Furthermore, a radiator and a muffler are assembled to the rear frame, and various levers for cargo handling and components of the steering system are assembled to the front frame component. Next, the power main body and the left and right side frames are connected with bolts, and the connecting members fixed to the rear and front ends of the side frames are connected to the left and right ends of the rear frame and front frame components, respectively. By connecting the members with bolts, the main part of the vehicle body as an industrial vehicle is completed.

Furthermore, in the case of the present invention, a structure is also provided in which the installation of the rear frame is abolished and both side frames are directly connected to the counterweight.

Embodiments Hereinafter, various embodiments of the vehicle body structure of an industrial vehicle according to the present invention will be described in detail with reference to the drawings, with the same reference numerals assigned to the same components as in the conventional structure.

FIG. 1 shows a first embodiment of the present invention, in which 1 is a right side frame having a hollow part, 2 is a left side frame having a similar hollow part, and 3 is a rear frame. A hydraulic oil tank 5 is housed inside the frame 1, and a fuel tank 6 is housed inside the left side frame 2.

A bracket 1a having a screw hole 7.7 as a connecting member is fixed to the rear end of the right side frame 1 with its mounting surface parallel to the front-rear direction of the vehicle. A bracket 3a having screw holes 8, 8 is fixed as a similar connecting member at a position facing the bracket la, and the brackets la, 3a are connected using bolts 9. Also, screw holes l1, 1 are provided at the rear end of the left side frame 2 as connecting members.
The bracket 2a having a diameter 1 is fixed with its mounting surface parallel to the longitudinal direction of the vehicle in the same way as the bracket 1a, while a screw hole 12.12 is provided on the left side of the rear frame 3 at a position facing the bracket 2a. Bracket with 3
b is fixed, and the brackets 2a and 3b are connected using the bolts 9.

Furthermore, Ff of right side frame 1 and left side frame 2
Brackets Ib and 2b that are connected to an instrument frame, which will be described later, are fixed to the [section].

Furthermore, engine support brackets 10.10 for fixing the engine, which will be described later, are provided on the inner wall surfaces of the right side frame 1 and the left side frame 2, respectively.

On the other hand, counterweight lower mounting brackets 14 are provided at the rear end of the rear frame 3, and the brackets 3 are fixed to the left and right sides of the rear frame 3.
Counterweight upper mounting brackets 15 and l6 are provided on the outer sides of a and 3b, respectively. 17 is a rear axle mounting bracket attached to the lower side of the rear frame 3, l8 is a hydraulic oil supply port, and 19 is a fuel supply port.

According to the first embodiment, the bolts 9 are used to connect the brackets 1a and 3a and the brackets 2a and 3b, and the brackets 1b and 2b are connected to an instrument frame (not shown). By simply doing this, the right side frame 1, left side frame 2, rear frame 3, and instrument frame are fixed to each other. Note that the counterweight lower mounting bracket I4 provided on the rear end of the rear frame 3 and the counterweight upper mounting bracket I4 provided on the outer side of the rear frame 3}15.1
6 has the function of ensuring the accuracy of the counterweight (not shown) when the counterweight is attached.

FIG. 2 shows a second embodiment of the present invention, which has the same basic configuration as the first embodiment and is designated by the same reference numerals. In this example, the direction of the mounting surface of each bracket is different from that of the first example. That is, in the example shown in FIG. 1, the brackets 1a and 2a fixed to both side frames 1 and 2 have their mounting surfaces parallel to the longitudinal direction of the vehicle, and the brackets fixed to the left and right sides of the rear frame 3 have their mounting surfaces parallel to the longitudinal direction of the vehicle. } Similarly, the mounting surfaces of brackets 1a and 3b are parallel to the longitudinal direction of the vehicle, whereas in the example shown in FIG. 2, the mounting surfaces of the brackets 1a and 2a are parallel to the width direction of the vehicle. On the other hand, the front part of the rear frame 3 has a mounting surface that is parallel to the vehicle width direction and that is parallel to the bracket 1a.
, 2a is fixed to a long bracket 3C, and the brackets la and 3a are connected to the bracket 3C using bolts 9. Furthermore, in the case of this example, substantially horizontal brackets lc and 2c are provided extending rearward from both side frames 1 and 2, and screw holes ld and 2d are opened in these brackets lc and 2c, while the rear frame 3 The above bracket IC is on both left and right sides of
, 2C are provided, and screw holes 3e, 3e are opened in the brackets 3d3d.

In the case of this second embodiment, when assembling both side frames 1. The right side frame l and the left side frame 2 are connected by bolts to both the right and left sides 21 of the bracket 3c of the rear frame 3, and further by connecting the brackets lc, 2c and the flakets 3d, 3d with bolts. and the rear frame 3 are fixed to each other. Therefore, the strength of the connection between the side frames 1, 2 and the rear frame 3 is increased compared to the first embodiment.

FIG. 3 shows a third embodiment of the present invention, the basic configuration of which is the same as that of the first embodiment, and is designated by the same reference numerals. In this example, screw holes 7,
Brackets la and 2a having screw holes 11 and l1
is fixed with the mounting surface parallel to the longitudinal direction of the vehicle, and has screw holes 8, 8 and screw holes 12, 12 on both left and right sides of the rear frame 3 and at positions facing the brackets 1a+2a. An outer plate 21.22 is fixed to the bracket la,
2a using bolts 9.

In the case of the third embodiment, the presence of the outer plates 21 and 22 fixed to both left and right sides of the rear frame 3 has the effect of increasing the rigidity between the rear frame 3 and both side frames 1 and 2.

FIG. 4 shows a fourth embodiment of the present invention. In this embodiment, unlike the previous examples, the installation of the rear frame 3 is abolished, and the right side frame 1 and left side frame 2 are directly connected. An example is shown in which it is fixed to the counterweight 24.

That is, while the brackets 1a2a fixed to the rear ends of both side frames 1.2 have their mounting surfaces parallel to the vehicle width direction, tapped holes 25.25 are opened in the lower side of the counterweight 24. and both sides frame 1
, 2 screw holes 7 opened in the brackets la, 2a.
．． 7 and threaded holes 11, 11 are connected directly to tapped holes 25, 25 of the counterweight 24 using bolts 9. In this example, a rear axle (not shown) is directly attached to a rear axle mounting bracket 24a provided below the counterweight 24. Note that a radiator and a muffler are usually attached to this counterweight 24.

In the case of the fourth embodiment, since the rear frame 3 in each of the above-mentioned embodiments is not required, the number of components is reduced and the ease of assembly is improved.

FIG. 5 shows a fifth embodiment of the present invention, in which the instrument frame 30 and the front cross member 31 are
are integrally formed in advance, and screw holes 40, 40 and screw holes 41.4 are provided on both left and right sides of the front cross member 31.
Drive axle mount plate aa with 1 open
a, 33b and tilt cylinder brackets 34a, 34
b are fixed together. The above-mentioned instrument frame 30, front cross member 31, drive axle mount plates 33a, 33b, tilt cylinder bracket 34a, . 34b constitutes the front frame component 50.

Moreover, brackets 38.38 and 39.39 having screw holes 36.36 and screw holes 37.37, respectively, serve as connection members at the front ends of the right side frame 1 and the left side frame 2, and the mounting surface is connected to the vehicle. It is fixed parallel to the front and back direction, and this bracket 38.38
and brackets 39.39 respectively fit into the screw holes 40.4 of the drive axle mounting plates 33a, 33b.
0 and screw holes 41 and 41 using bolts 9. In addition, right side frame 1 and left side frame 2
A rear frame 3 is fixed to the rear end portion by a mounting structure similar to that of the second embodiment (FIG. 2).

According to the fifth embodiment, both the left and right side frames 1
, 2, the bracket 38.3 is a connecting member.
8 and brackets 39, 39, the front ends of the side frames 1, 2 can be easily assembled.

Next, the actual assembly operation will be explained using FIG. 6. That is, since the hydraulic oil tank 5 is housed inside the right side frame 1 as described above, various hydraulic-related parts as accessories, such as the suction hose 43,
Cargo handling control valve 44, micron filter 45
and other piping are assembled in advance. Similarly, the fuel tank 6 is housed inside the left side frame 2 as described above, so the fuel supply port 19, filter 46, fuel pipe 47 and other electrical parts as accessories are assembled in advance. I'll keep it.

In addition, the rear frame 3 includes a radiator 52 and a muffler 5.
3 and these pipings are assembled in advance.

The instrument frame 30 also includes various levers 5 for cargo handling.
5. Assemble the steering shaft 56 and steering wheel 57 in advance.

60 is a power main body, and this power main body 60 includes an engine 61, a transmission 62, a differential gear 63, a brake rotor 64, a fan 65, and the like. This engine 6
Mounting brackets 66 are provided on both the left and right outer wall surfaces of 1.

According to this configuration, when assembling, first the mounting bracket 66 provided on the engine 61 is attached to the right side frame l.
and bolted to the engine support brackets 10, 10 provided on the inner wall surfaces of the left side frame 2, respectively, and then the right side frame 1
A connecting tool that connects the bracket la fixed to the rear end of the left side frame 2 and the bracket 2a fixed to the rear end of the left side frame 2 to the bracket 3c of the rear frame 3 with bolts, and protrudes rearward from the engine 61. 67 and rear frame 3
The right side frame 1, the left side frame 2, and the rear frame 3 are connected to each other by connecting a connecting member 68 projecting forward from the right side frame 1.

Next, the main parts of the body structure of an industrial vehicle such as a forklift are completed by bolting the brackets lb and 2b fixed to the front sides of the right side frame 1 and the left side frame 2 to predetermined parts of the instrument frame 30. .

Therefore, one feature of the present invention is that all the component parts are connected through the respective connecting members, and no welding means is used as in the past.

Effects of the Invention As described above in detail, the industrial vehicle body structure according to the present invention includes a right side frame and a left side frame disposed on both sides in the vehicle width direction, and the right side frame and left side frame. a connecting member fixed to the rear end and the front end; a rear frame disposed at the rear of both the side frames; a front frame component disposed at the front of the both side frames; The body structure of an industrial vehicle includes connecting members fixed to both left and right ends of the frame component and connectable to the connecting members of both the site frames, and the rear frame is equipped with a radiator and a muffler. At the same time, a counterweight lower mounting bracket and a counterweight upper mounting bracket are fixed to appropriate parts of the rear frame.

Furthermore, the present invention eliminates the installation of the rear frame and connects both side frames directly to the counterweight, and also includes a hydraulic oil tank and its accessories inside either side of the side frames. is stored, and a fuel tank and its attached parts are stored inside one of the two side frames, and furthermore, the front frame component is integrally constituted by an instrument frame and a front cross member, Since the various levers and the components of the steering system are assembled together in advance, the following effects can be achieved.

That is, since the vehicle body structure is made up of small parts and components, large-scale equipment such as a crane or hoist is not required during assembly, and the number of man-hours during assembly is reduced, improving work efficiency. Therefore, there is an advantage that automation using robots and the like becomes easy.

Furthermore, since the storage space for each part becomes smaller and the painting booth can also be made smaller, the area occupied by these parts can be reduced.

Furthermore, the obtained product has the advantage that no distortion occurs due to heat during welding. In addition, even if one of the components breaks down during use, it can be easily replaced, and in particular, when heavy maintenance such as engine replacement is required, it can be easily performed by removing the side frame. is possible.

Further, since there is no need to attach various piping and harnesses and to attach sacrificial parts after assembling each component, there is an advantage that the work process can be streamlined.

On the other hand, in the case of the present invention, since each component can be freely replaced, it is possible to easily deal with vehicle bodies with different widths or wheel bases, etc., and each part can be used for general purposes. This increases the functionality of the vehicle, increasing the number of variations in car models to eight. In particular, by changing the side frame that stores the fuel to a special one, it is possible to convert it into a propane-only vehicle.

Furthermore, by eliminating the installation of the rear frame and connecting both side frames directly to the counterweight,
The effects of reducing the number of parts and improving ease of assembly can be obtained.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of essential parts showing a first embodiment of the present invention, FIG. 2 is an exploded perspective view of essential parts showing a second embodiment of the invention, and FIG.
The figure is an exploded perspective view of a main part showing a third embodiment of the present invention, FIG. 4 is an exploded perspective view of a main part showing a fourth embodiment of the invention, and FIG. FIG. 6 is a partially exploded perspective view showing an actual example of assembly, and FIG. 7 is a partially exploded perspective view showing an example of a conventional industrial vehicle body structure. ■...Right side frame, 2...Left side frame, la, 2a...bracket (connecting member), 3...
...Rear frame, 3a, 3b...Bracket (connection member) bracket, 5...Hydraulic oil tank, 6
...Fuel tank, 9...Bolt, 10...Engine support bracket, 14...Counterweight lower mounting bracket, 1
5... Counterweight upper mounting bracket l.,l
7...Rear axle mounting bracket, 2l...Outer L
24...Counterweight, 30...Instrument frame, 31...Front cross member, 43...
・Suction hose, 44...Cargo handling control valve, 47...Fuel pipe, 50...Front frame component 52...Radiator, 53...Muffler 60...Power body, ■...Engine, Figure 2 3d Figure 4 Figure 3 Figure 7 Eight

Claims (5)

[Claims] (1) A right side frame and a left side frame arranged on both sides in the vehicle width direction, a connecting member fixed to the rear end and front end of the right side frame and the left side frame, and a connecting member fixed to the rear end and front end of the right side frame and the left side frame, and A front frame component arranged at the front part of the rear frame and both side frames arranged in the rear part, and fixed to both left and right end parts of the rear frame and front frame component, and connected to the connecting member of the both side frames. A body structure for an industrial vehicle, comprising a connectable connecting member. (2) A vehicle body structure for an industrial vehicle according to claim 1, wherein the rear frame is equipped with a radiator and a muffler, and a counterweight lower mounting bracket and a counterweight upper mounting bracket are fixed to appropriate parts of the rear frame. (3) A right side frame and a left side frame arranged on both sides in the vehicle width direction, a connecting member fixed to the rear end and front end of the right side frame and the left side frame, and a connecting member fixed to the rear end and front end of the right side frame and the left side frame, and A counterweight disposed at the rear and a front frame component disposed at the front of both side frames, fixed to both left and right ends of the counterweight and front frame component, and connectable to the connecting member of the both side frames. A vehicle body structure for an industrial vehicle, characterized by comprising a connecting member. (4) A hydraulic oil tank and its accessories are stored inside one of the side frames, and a fuel tank and its accessories are stored inside the other side of both the side frames. The body structure of the industrial vehicle described in 3. (5) The front frame component has an instrument frame and a front cross member integrally constructed, and various levers and steering system components are integrally assembled in advance.
The body structure of the industrial vehicle described in 3.