JPH028803Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a front axle housing used in industrial cargo handling vehicles such as forklift trucks and shovel loaders, and more specifically to a pair of left and right axle brackets provided on the front housing. Regarding its mounting structure.

Prior Art Conventionally, as a method of attaching an axle bracket to an axle housing, as shown in FIG. 2, the axle housing 2 and the axle bracket 6 are formed into an integral structure by casting, welding, bolting, etc.; As shown in the figure, a method has been proposed in which the axle housing 2 and the axle bracket 7 are formed separately, and the axle bracket 7 is attached to the axle housing 2 so that it can move forward and backward in the longitudinal direction and can rotate in the circumferential direction. There are, but
Both methods have their advantages and disadvantages, and neither is satisfactory.

In other words, when attaching the front axle housing to the frame, the front axle housing is usually attached to a pair of side members that are formed facing each other on the left and right sides of the frame.
More specifically, the axle bracket protruding from the axle housing is brought into contact with the inner surface of the mounting portion formed at the tips of both side members, and then tightened with bolts. However, in the above method, since the axle bracket is integrally provided with the axle housing, the drive reaction force generated on the tire side can be received by the axle bracket. On the other hand, this method requires a high degree of processing precision, namely, the mounting holes that open on both the left and right mounting parts, and the mounting holes that open on both the left and right axle brackets. It is necessary to align the center lines, and if the opening positions do not match, it will be difficult to assemble, and the width dimension (outer width dimension) between both axle brackets.
Width dimension between both mounting parts on the frame side (inner width dimension)
If the gap is too small, it will be difficult to assemble, and if the gap is too large, the bolts cannot be tightened evenly in each mounting hole, resulting in loosening. There is a problem in that it causes problems such as causing problems.

In this method, both axle brackets are provided so as to be able to move forward and backward in the longitudinal direction with respect to the axle housing, and to be rotatable in the circumferential direction, thereby achieving accurate dimensional accuracy. If the above-mentioned machining accuracy is not required, the dimensional error can be adjusted by adjusting the forward/backward movement and rotation of both axle brackets in cases where the above-mentioned machining accuracy is not required. However, there is a problem in that it is not possible to absorb the driving reaction force generated on the tire side, in other words, a locking mechanism must be provided separately to absorb the driving reaction force of the tire.

Purpose of the invention The present invention is an attempt to improve the conventional situation in view of the above-mentioned circumstances.The purpose of the present invention is not only to facilitate processing and assembly, but also to reduce the driving reaction force of the tire. The object of the present invention is to obtain a mounting structure for an axle bracket that can be received at the same time.

Structure of the invention In other words, the invention provides a pair of left and right axle brackets attached to the axle housing, one of which is integrally constructed with the axle housing, and the other axle bracket is movable in the longitudinal direction and can be moved back and forth in the circumferential direction. The main feature of the present invention is that by providing the axle housing in a rotatable manner, an axle bracket mounting structure having only the advantages of the conventional structure described above can be obtained. Of the pair of left and right axle brackets provided on both the left and right axle tubes, one axle bracket is installed integrally with the axle tube, while the other axle bracket is attached longitudinally to the axle tube. It is constructed so that it can be freely moved forward and backward and freely rotated in the circumferential direction.

Embodiments Specific embodiments of the present invention will be described below with reference to illustrative drawings. In the drawing shown in Figure 1,
1 is a frame forming the body of a forklift truck; 2 is a front axle housing attached to the tip of the frame 1; the frame 1 has left and right side members 1A, 1A;
It is formed into a U-shape with an undercover 1B connecting the lower ends of both side members 1A, 1A. An engine room 3 is provided in the recess formed by both side members 1A, 1A, undercover 1B, and rear plate 1C, and the front axle housing 2 is provided at the tip of both side members 1A, 1A. Attachment portions 4, 4 are formed, and an appropriate number of attachment holes 5 are opened at regular intervals in the attachment portions 4, 4 in correspondence with attachment holes 8, which will be described later.

The front axle housing 2 consists of a differential housing 2A and a pair of left and right axle tube portions 2B, 2B extending integrally from both left and right ends of the differential housing 2A at a displacement angle of 180 degrees. 2B, 2B has the mounting part 4 on the frame 1 side,
A pair of left and right axle brackets 6, 7 are provided in correspondence with the axle brackets 4.

Therefore, in both axle brackets 6, 7, both the brackets 6, 7 have boss portions 6A, 7A formed in a cylindrical shape and having an inner diameter dimension substantially the same as the outer circumferential dimension of the axle tube portion 2B, and boss portions 6A, 7A formed in a cylindrical shape. It consists of bracket parts 6B and 7B which extend from 7A in a fan shape with an appropriate divergence angle, and the bracket parts 6B and 7
B has an appropriate number of mounting holes 8 along its outer periphery.
. . . are formed by opening them at regular intervals in correspondence with the mounting holes 5 . The axle brackets 6, 7 are attached by fitting the boss portions 6A, 7A of the axle brackets 6, 7 into the axle tube portions 2B, 2B.
The axle bracket 6 fitted into one of the axle tube portions 2B is integrally attached to the same axle tube portion 2B by welding the boss portion 6A, while the axle bracket 6 is attached to the other axle tube portion 2B with an integral structure. The axle bracket 7 fitted into the axle bracket 7 is attached so as to be able to freely move forward and backward along the longitudinal direction of the axle tube portion 2B and freely rotate along the circumferential direction.

The front axle housing 2 formed as described above has one axle bracket 6.
(fixed side) is brought into contact with the inner surface of the mounting part 4 formed on the frame 1 side, and each pair of mounting holes 5, 8, . . . By inserting the bolts in the matched state and tightening the nuts that are threaded onto the bolts, one side (fixed side) can be installed, while the other axle bracket 7 (movable side) can be attached to the axle pipe section. A mounting hole 8 is brought into contact with the inner surface of the other mounting portion 4 through forward and backward adjustment along the longitudinal direction of the axle shaft tube portion 2B, and is opened in the same bracket 7 through rotational adjustment along the circumferential direction of the axle shaft tube portion 2B. ..., the mounting hole 5 which opens in the mounting portion 4...
The other side (movable side) can be attached by inserting a bolt in the same manner as above and tightening the nut that is threaded onto the bolt.

In the above embodiment, the axle housing 1
The axle bracket 6 and the axle bracket 6 are provided so as to be integrally formed by welding, but they can also be integrally formed by casting, or by tightening bolts. .

Effects of the invention The invention is constructed as described above.
Of the pair of left and right axle brackets attached to the front axle housing as described above, one of the axle brackets is provided integrally with the axle tube, while the other axle bracket is installed longitudinally with respect to the axle tube. By being able to move forward and backward and freely rotate in the circumferential direction, it can be manufactured without requiring a high degree of processing precision, and it is easy to assemble to the frame. It has now become possible to obtain an axle housing that also has the function of absorbing the drive reaction force of. That is, in the present invention, one of the axle brackets is provided so that it can move forward and backward in the longitudinal direction with respect to the axle tube and can freely rotate in the circumferential direction, so that the axle bracket is formed at the tips of both side members on the frame side. Even if the width dimension between both mounting parts is set roughly, and even if the opening positions (opening centers) of the mounting holes opened in correspondence with both mounting parts do not match, the axle bracket can be fixed longitudinally. By moving forward and backward in the direction and adjusting rotation in the circumferential direction, it has become possible to easily match them.

Furthermore, since the other axle bracket is provided integrally with the axle tube, the drive reaction force on the tire side can be sufficiently absorbed by the axle bracket without the need for a separate locking mechanism. It came to this.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of an axle housing and a frame according to the present invention. Further, FIGS. 2 and 3 are external perspective views of an axle housing showing a conventional structure. 1...Frame, 1A...Side member, 1
B...under cover, 1C...rear plate,
2...Front axle housing, 2A...Differential housing, 2B...Axle pipe section, 3...Engine room, 4...Mounting section, 5...Mounting hole,
6, 7...Axle bracket, 6A, 7A...
Boss part, 6B, 7B...Bracket part, 8...Mounting hole.

Claims (1)

[Scope of utility model registration request] When attaching a pair of left and right axle brackets to both the left and right axle tubes of the axle housing, one axle bracket is installed integrally with the axle tube, while the other axle bracket is installed longitudinally with respect to the axle tube. An axle bracket mounting structure in an axle housing, which is mounted so that it can move forward and backward and freely rotate in the circumferential direction.