JPH06266Y2 - Frame structure of multi-wheel power carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a body frame structure of a multi-wheel power carrier.

(B) Conventional Technology Conventionally, a machine body frame of a multi-wheel power carrier is formed in a rectangular frame shape by lateral transverse pumps extending laterally between the front and rear ends of the left and right chain cases.

And, the chain case has a cross-section of approximately U with an open upper side.
It is formed in a rectangular box shape in the shape of a front-rear longitudinal direction. A large number of axles are mounted in the same case, and a chain is inserted and wound around each axle from the upper opening so that all wheels can be driven. I am configuring.

At this time, since the horizontal pipes that are laterally bridged between the left and right chain cases are connected continuously through the same case to ensure strength, especially when the end of the intermediate horizontal pipe is attached to the endless chain. It was an obstacle.

Therefore, a work has been performed in which one portion of the chain is cut, the chain is inserted through the upper opening of the chain case, and the cut ends are connected after being wound between the axles.

(C) Problems to be solved by the invention However, since the chain mounting work is complicated and requires a lot of time and labor, there has been a problem in terms of manufacturing cost.

Moreover, the upper opening shape like the above-mentioned chain case does not have sufficient strength, and also requires a great deal of labor for welding the lid body for closing the upper opening.

(D) Means for Solving the Problems In the present invention, therefore, the left and right chain cases, in which a required number of axles are mounted inside and the chains are suspended and incorporated between the axles, are made of a thick plate. The inner plate and the case body, which is thinner than the inner plate and has a substantially U-shaped cross section, are combined in the middle to be welded to form a hollow cylinder in the front-rear longitudinal direction. Between the inner plates, a body frame structure of a multi-wheel power carrier in which a required number of horizontal machine frames are horizontally fixed is provided.

(E) Action When mounting the chain in the chain case, insert the chain from the front and rear ends of the case and set the axles so that the chains are suspended between the axles. In this case, since the horizontal machine frame is not connected to the inside of the chain case in a penetrating manner, the chain can be easily equipped with a loop-shaped lendless chain. Since the inner plate that directly supports the frame is formed to be thick, the horizontal machine frame is reliably supported, and the chain case is constructed by welding the case body and the inner plate. Some of them have sufficient rigidity.

(F) Effect According to the present invention, of the inner side plate and the case body that form the chain case, only the inner side plate has a thick plate shape, and the front and rear longitudinal hollow cylindrical chain case is made lighter in weight. It is possible to increase the strength of the body frame while ensuring the rigidity of the chain case itself, and to quickly install the chain that should be installed in the chain case,
In addition, since it can be easily performed, the manufacturing cost can be significantly reduced.

Further, the chain case can be manufactured by bringing the inner plate and the case body into contact with each other in the middle and welding the upper and lower parts. Therefore, the welding work can be automatically welded, so that the chain case can be manufactured quickly and easily. can do.

Further, since the case body constituting the chain case is thin, it can be easily formed into a substantially U-shaped cross section by pressing or the like.

Moreover, when the inner plate and the horizontal machine frame are horizontally fixed by welding or the like, since the inner plate is a thick plate, welding distortion and the like are reduced and the entire machine frame can be easily processed.

(G) Embodiments An embodiment of the present invention will be described in detail with reference to the drawings. (A) shown in FIG. 1 is a power carrier, and the carrier (A) is the front left side of the machine frame (1). On the driving part (2), on the right side of the front part
Position the fuel tank (3) and the fuel tank (4) forward and backward, respectively,
A cargo bed (5) is placed behind them, and
On the left and right sides of (1), a total of 8 wheels (6), each with 4 wheels on each side, are arranged in series so that they can be transported.

Then, as shown in FIGS. 2 and 3, the machine body frame (1) is provided with a large number of horizontal machine frames (8) horizontally mounted on the front and rear parts and the middle part of the left and right chain cases (7) and (7). The driving machine support frame (9) is continuously connected to the front horizontal machine frame (8) in a forward projecting manner, and the cargo bed support machine is provided at the rear of the cases (7) and (7). The frame (10) is formed by projecting rearward and upward.

The gist of the present invention resides in the left and right chain cases (7) and (7) forming a part of the machine body frame (1), and is as follows. That is, the chain case (7) includes a case body (7a) having a thin U-shaped cross section, an inner plate (7b) having a thick plate, and front and rear side plates (7c). ), And the upper and lower inner ends (7a-
1) and (7a-2) are brought into contact with the inner surface of the inner plate (7b) and assembled in the middle, and the inner plate (7b) and the upper and lower inner ends (7a-1), (7a-2)
By welding the upper and lower outer corners (7d) and (7d) formed at the contacting part with and attaching the endless chain (11) described later, the front and rear side plates (7c) and (7c) are connected in series. , Hollow inside (14)
It is formed into a front and rear long rectangular box shape.

Then, in the hollow part (14) of the chain case (7), a lendless chain (11) connected in a loop is inserted from the front and rear openings, and the case body (7a) and the inner plate ( 7b) and the required number of axle insertion holes (1
The axle (13) is inserted through the inside of (2), and the endless chain (11) is suspended between the axles (13). After that, the front and rear end openings of the chain case (7)
It should be blocked by (7c) and (7c).

Therefore, the manufacture of the chain case (7) is
It is sufficient to bring the inner plate (7b) and the inner plate (7b) into contact with each other in the middle, and fillet the upper and lower outer corners (7c), (7c) in parallel with each other. In addition to the above, the case (7) can be manufactured quickly and easily, and moreover, the case (7) is formed in a hermetically sealed state, and as described later, the horizontal machine frame ( The inner plate (7b) that directly supports 8) is formed to have a large thickness, so that it has high rigidity.

Furthermore, since the endless chain (11) can be mounted as described above, the labor such as connecting and connecting the chains as in the conventional case can be omitted, and the mounting operation itself becomes simpler than in the conventional case. It is a thing.

The lateral machine frame (8) has its left and right ends fixed to the outer surface of the inner plate (7b) of the chain case (7) by welding or bolting.

When the horizontal machine frame (8) and the inner side plate (7b) are fixed by welding, the inner side plate (7b) is formed to be thick, so that distortion or the like due to welding does not occur.

[Brief description of drawings]

FIG. 1 is a side view of a multi-wheel power carrier having an airframe structure according to the present invention. FIG. 2 is a plan view of the main part. FIG. 3 is a side view of the main part. FIG. 4 is a sectional view taken along the line II of FIG. (A): Multi-wheel power carrier (1): Machine frame (6): Wheels (7): Chain case (7a): Case body (7b): Inner plate (8): Horizontal machine frame (13): Axle

Claims (1)

[Scope of utility model registration request] 1. A left and right chain case (7), (7) in which a required number of axles (13) are mounted inside and a chain is suspended and incorporated between the axles (13). Inner plates (7b), (7b)
And the case plates (7a) and (7a), which are thinner than the inner plates (7b) and (7b) and have a substantially U-shaped cross section, are welded in the middle of the front and rear while being welded together. It is formed in a tubular shape, and the required number of horizontal machine frames (8) are horizontally fixed between the inner plates (7b) and (7b) of the left and right chain cases (7) and (7). Airframe frame structure for wheeled vehicle.