JPH05169906A - Axle housing - Google Patents

Abstract

PURPOSE:To provide an axle-housing in which inexpensive materials can be used, and assembling work between respective parts and maintenance work can be facilitated, and also no welding strain is caused. CONSTITUTION:In an axle-housing consisting of housing ends 1 connected to both ends of a differential housing 2 and axle brackets 3 fitted to the outer circumferences of the housing ends 1, the outer circumference of each housing end 1 is provided with a projected flange part 11, and the flange part 11 is held between the axle bracket 3 and the differential housing 2. Then, the axle bracket 3 and the differential housing 2 are fixed by means of bolts 38 to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axle housing used in a vehicle such as a forklift, and more particularly to a connecting structure between a housing end and a diff housing.

[0002]

2. Description of the Related Art In a forklift truck, as shown in FIGS. 5 and 6, a front axle housing for mounting its front wheels has a housing end 8 for mounting a wheel (not shown) and the housing ends 8 mounted on both ends. The diff housing 9 is used. The differential housing 9 has a built-in differential gear that rotates the left and right wheels. Left and right ends 92 of the differential housing 9
And the base 81 of the housing end 8 are fixed to each other by welding 7.

An axle bracket 85 is fitted around the outer periphery of the housing end 8. The housing end 8 and the axle bracket 85 are fixed by welding 7. The brake assembly 4 is attached to the axle bracket 85 with bolts 83. The bolt 83 is screwed into the bolt hole 853 of the axle bracket 85. The lower end of the axle bracket 85 is fixed to the frame 43 by inserting a bolt into the bolt hole 851. In FIG. 5, reference numeral 45 is a mast support.

[0004]

By the way, in the conventional axle housing, the housing end 8, the diff housing 9, and the axle bracket 85 are integrally welded to each other by welding 7. Therefore, weldable cast steel is used as the material for each of these parts. However, cast steel is expensive. on the other hand,
Although it is conceivable to construct these parts with inexpensive materials such as cast iron, it is difficult to weld cast iron. Further, if the above-mentioned parts are integrally welded and fixed, maintenance work of these parts is very difficult.

Further, as described above, when welding is performed, the centering and the dimensional matching between the respective parts must be accurately maintained.
It is necessary to perform welding work, and assembly work is difficult. In addition, welding may cause welding distortion. In view of such conventional problems, the present invention intends to provide an axle housing which can use inexpensive materials, is easy to assemble and maintain between parts, and does not cause welding distortion. Is.

[0006]

According to the present invention, there is provided an axle housing in which housing ends are connected to both ends of a diff housing and an axle bracket is fitted on the outer circumference of the housing end. An axle housing is characterized in that a portion is provided, the collar portion is sandwiched between the axle bracket and the differential housing, and the axle bracket and the differential housing are fixed to each other by a connecting tool.

What is most noticeable in the present invention is that a protruding brim portion is provided on the outer periphery of the housing end, and that the brim portion is clamped by an axle bracket and a differential housing and both are fixed by a connecting tool. It is in. The brim portion is formed in a ring shape on the entire circumference or a part of the outer circumference of the housing end (see FIG. 2). The brim portion is provided at the boundary between the axle bracket and the differential housing so that the brim portion is sandwiched between the axle bracket and the differential housing. In this pinching, a step portion for preventing the collar portion from coming off is provided on the axle bracket side (FIGS. 1 to 3) or the diff housing side (FIG. 4) into which the collar portion enters. Further, the axle bracket and the differential housing may be provided with the above-mentioned step portions, respectively, and the brim portion may be sandwiched between them.

Further, the axle bracket and the differential housing are fixed by a connecting tool such as a bolt. At this time, the brake assembly can also be fastened together with the axle bracket by the connecting tool. Further, as the material of the housing end, the diff housing, and the axle bracket, an inexpensive material such as cast iron can be used.

[0009]

In the present invention, the brim portion provided at the housing end is sandwiched by the axle bracket and the differential housing, and the axle bracket and the differential housing are fixed by the connecting tool. Therefore, it is not necessary to connect the housing end, the differential housing, and the axle bracket by welding as in the conventional case. And
Since welding is not performed, there is no need to use expensive cast steel as the material for each component, and the cost of the axle housing is low.

Further, since welding is not performed, welding distortion does not occur. Therefore, even if a material such as cast iron is difficult to weld, any material can be used regardless of this, and the degree of freedom in design from the viewpoint of the material is also improved. Furthermore, since welding is not performed, assembly work between parts and maintenance work of the axle housing are facilitated. Therefore, according to the present invention, it is possible to provide an axle housing in which an inexpensive material can be used, the assembling work between the respective parts and the above-mentioned maintenance work are easy, and welding distortion does not occur.

[0011]

【Example】

Example 1 An axle housing according to an example of the present invention will be described with reference to FIGS. This example relates to a front axle housing of a forklift truck. The axle housing of this embodiment has a housing end 1 connected to both ends of a differential housing 2 and an axle bracket 3 fitted on the outer periphery of the housing end 1.
A protruding brim portion 11 is provided on the outer circumference of the housing end 1, and the brim portion 11 is sandwiched between the axle bracket 3 and the differential housing 2. Also,
The axle bracket 3 and the differential housing 2 are fixed to each other by a bolt 38 as a connecting tool.

As shown in FIGS. 1 and 2, the housing end 1 has a tip portion 12 for mounting a wheel and a base end portion 13 for connecting to the differential housing 2. On the outer circumference of the housing end 1, there is a ring-shaped protruding collar portion 11 at a position outside the flange 22 of the differential housing 2 (on the housing end side). On the other hand, the diff housing 2 has a main body 20 and a tubular connecting portion 21 provided at both ends thereof, and a flange 22 for mounting the axle bracket 3 at the tip of the tubular connecting portion 21.

As shown in FIGS. 1 and 3, the axle bracket 3 is composed of a ring-shaped main body portion 31 into which the housing end 1 is fitted and a plate portion 35 which is continuously provided below the ring-shaped main body portion 31. The body portion 31 has a fitting hole 32 for inserting and fitting the tip portion 12 of the housing end 1. The fitting hole 32 has a flange portion 1 of the housing end 1.
It has a step portion 321 that engages with 1. Further, the body portion 31 has a bolt hole 311 for connecting with the housing end 1. On the other hand, the plate portion 35 has bolt holes 3 for connecting the axle bracket 3 to the frame 43.
Have 51. The housing end 1, the differential housing 2 and the axle bracket 3 are all made of cast iron.

Next, in assembling the above-mentioned components, the base end portion 13 of the housing end 1 is inserted into the cylindrical connecting portion 21 of the differential housing 2. Then, the flange portion 11 of the housing end 1 is brought into contact with the end surface of the flange 22 of the differential housing 2. On the other hand, housing end 1
On the tip end 12 side of the body of the axle bracket 3
The fitting hole 32 of No. 1 is fitted, and the step portion 321 of the fitting hole is engaged with the brim portion 11 (FIGS. 2 and 3). Then, as shown in FIG. 1, a bolt 38 is screwed into the bolt hole 311 of the axle bracket 3 and the flange 22 of the differential housing 2 to fix them. In addition, by this, the brim portion 11
Are sandwiched by the flange 22 of the differential housing 2 and the step portion 321 of the axle bracket 3. When the bolt 38 is screwed, the bracket 41 of the brake assembly 4 is fastened to the axle bracket 3 together. Other configurations are similar to those of the conventional example.

Next, the function and effect will be described. In the axle housing of this example, the housing end 1 has its base end portion 13 inserted into the cylindrical connecting portion 21 of the differential housing 1, and the brim portion of the housing end 1 is sandwiched between the axle bracket 3 and the differential housing 2. , Bolt 38
It is fixed by.

Therefore, it is not necessary to connect these parts by welding as in the conventional case. Since welding is not performed, it is not necessary to use expensive cast steel as the material for each component, and cast iron is used. Therefore, the cost of the axle housing is low. Moreover, since welding is not performed, assembly work between parts and maintenance work of the axle housing are facilitated. Also, no welding strain is generated.

Second Embodiment In this embodiment, as shown in FIG. 4, the flange portion 22 of the housing end 1 is engaged with the step portion 221 provided on the flange portion 22 of the differential housing 2 in the first embodiment, and the axle bracket is formed. It is sandwiched between 3 and. That is, the step portion 221 is provided at the end portion of the flange portion 22, and the flange portion 11 of the housing end 1 is fitted in this portion. Others are the same as in the first embodiment. Also in this example, the same effect as that of the first embodiment can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of an axle housing according to a first embodiment.

FIG. 2 is an enlarged view of a main part of a housing end according to the first embodiment.

FIG. 3 is a perspective view of an axle bracket according to the first embodiment.

FIG. 4 is a sectional view of a main part of an axle housing according to a second embodiment.

FIG. 5 is a sectional view of an axle housing according to a conventional example.

FIG. 6 is a perspective view of an axle housing according to a conventional example.

[Explanation of symbols]

 1. ． ． Housing end, 11. ． ． Head part, 2. ． ． Differential housing, 21. ． ． Cylindrical connection part, 22. ． ． Flange, 3. ． ． Axle bracket, 32. ． ． Fitting hole, 321. ． ． Step, 4. ． ． Brake assembly,

Claims (1)

[Claims] 1. An axle housing in which housing ends are connected to both ends of a diff housing and an axle bracket is fitted on the outer circumference of the housing end, wherein a protruding brim portion is provided on the outer circumference of the housing end. An axle housing characterized in that the brim portion is sandwiched between the axle bracket and the differential housing and the axle bracket and the differential housing are fixed to each other by a connecting tool.