JPH0565606U - Axle housing tube wheel mounting structure - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the ease of assembly and to enable easy repair in a short time. [Structure] A sleeve 15 is press-fitted onto an outer peripheral surface of an axle housing tube 2 so as not to rotate, and an inner race 5a of a bearing 5 is fitted to the outer peripheral surface of the sleeve 15, and the bearing 5 is used for a wheel of a wheel 7. The hub 4 is rotatably supported. [Effect] The inner race 5a of the bearing 5 can be easily fitted and attached to the outer peripheral surface of the sleeve 15, and when the inner race 5a rotates, the sleeve 15 is worn and the axle housing tube 2 is not worn. It can be repaired by replacing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure for mounting a wheel on an axle housing tube such as a rear axle housing tube of a dump truck.

[0002]

[Prior Art]

 In a dump truck, as shown in FIG. 1, axle housing tubes 2 are fixed to both ends of a differential case 1 to form an axle housing 3, and a wheel hub 4 is rotated by bearings 5 on an outer peripheral surface of the axle housing tube 2. The tire 7 is freely supported, and the tire 6 is attached to the wheel hub 4 to form a wheel 7, and the drive shaft 8 in the axle housing 3 is connected to the wheel hub 4 via the final reduction mechanism 9 so that the wheel can be connected to the wheel hub 4. 7 is rotationally driven.

[0003]

[Problems to be solved by the device]

 With such a wheel mounting structure, the inner race 5a of the bearing 5 is fitted and assembled to the outer peripheral surface of the axle housing tube 2, so that the inner race 5a and the outer peripheral surface of the axle housing tube 2 are tightly fitted to each other. Then, it becomes difficult to fit the inner race 5a at the time of assembling, and the assembling property deteriorates. For this reason, conventionally, the inner race 5a and the outer peripheral surface of the axle housing tube 2 are fitted to each other so that they can be easily fitted to each other to improve the assemblability, and the inner race 5a rotates relative to the axle housing tube 2 when operated for a long time. However, the outer peripheral surface of the axle housing tube 2 may be worn. In this way, when the outer peripheral surface of the axle housing tube 2 is worn, the axle housing 3 must be removed from the vehicle body and set in a large machine for repair, which is a very troublesome work.

Therefore, an object of the present invention is to provide a wheel mounting structure for an axle housing tube that can solve the above problems.

[0005]

[Means for Solving the Problems]

 A sleeve 15 is fitted to the outer peripheral surface of the axle housing tube 2 of the axle housing 3 and fixed by a fixing means so as not to rotate, and an inner race 5a of the bearing 5 is fitted and attached to the outer peripheral surface of the sleeve 15. A wheel mounting structure of an axle housing tube in which a wheel hub 4 is rotatably supported by the bearing 5, and a tire 6 is mounted on the wheel hub 4 to form a wheel 7.

[0006]

[Work]

 Since the inner race 5a of the bearing 5 is fitted and attached to the outer peripheral surface of the sleeve 15, the fit between the two can be loosened so as to facilitate the assembly, and the assemblability can be improved, and when the inner race 5a rotates. Since the sleeve 15 is worn and the outer peripheral surface of the axle housing tube 2 is not worn, it can be repaired by taking out only the sleeve 15 and replacing it, and it can be repaired easily in a short time.

[0007]

【Example】

 As shown in FIG. 2, the outer peripheral surface of the axle housing tube 2 constituting the axle housing 3 has a small tip end diameter portion 10, an intermediate middle diameter portion 11, and a proximal end large diameter portion 12 that face the leading end side. -The second step portions 13 and 14 are formed, and the sleeve 15 is fitted to the tip small diameter portion 10 and the intermediate intermediate diameter portion 11 of the second step portions 13 and 14, respectively, and abuts the first and second step portions 13 and 14, Each sleeve 15 is fixed by fixing means so as not to rotate, and the inner race 5a of the bearing 5 is fitted to the outer peripheral surface of the sleeve 15. As the fixing means of the sleeve 15, there are press-fitting, a bolt 16 as shown in FIG. 3, and a key 17 and a key groove 18 as shown in FIGS.

[0008]

[Effect of the device]

 Since the inner race 5a of the bearing 5 is fitted and attached to the outer peripheral surface of the sleeve 15, the fit between the two can be loosened so as to facilitate the assembly, and the assemblability can be improved, and when the inner race 5a rotates. Since the sleeve 15 is worn and the outer peripheral surface of the axle housing tube 2 is not worn, it can be repaired by taking out only the sleeve 15 and replacing it, and it can be repaired easily in a short time.

[Brief description of drawings]

FIG. 1 is a sectional view of a conventional example.

FIG. 2 is a sectional view showing an embodiment of the present invention.

FIG. 3 is a cross-sectional explanatory view of fixing means.

FIG. 4 is a cross-sectional view showing another example of fixing means.

5 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

2 ... Axle housing tube, 3 ... Axle housing, 4 ... Wheel hub, 5 ... Bearing, 5a ... Inner race, 15 ... Sleeve, 16 ... Bolt, 17 ... Key, 1
8 ... Keyway.

Claims (4)

[Scope of utility model registration request] 1. A sleeve 15 is fitted on an outer peripheral surface of an axle housing tube 2 of an axle housing 3 and fixed by a fixing means so as not to rotate, and an inner race 5a of a bearing 5 is fitted on an outer peripheral surface of the sleeve 15. Then install,
A wheel mounting structure of an axle housing tube in which a wheel hub 4 is rotatably supported by the bearing 5 and a tire 6 is mounted on the wheel hub 4 to form a wheel 7. 2. The wheel mounting structure for an axle housing tube according to claim 1, wherein the fixing means is press-fitted. 3. The wheel mounting structure for an axle housing tube according to claim 1, wherein the fixing means is a bolt 16. 4. A wheel mounting structure for an axle housing tube according to claim 1, wherein said fixing means is a key 17 and a key groove 18.