Shaft sleeve mounting device for rear-drive bridge type transmission system

Abstract

The utility model discloses a shaft sleeve mounting device for a rear-drive bridge type transmission system, which comprises a first supporting mechanism for supporting a shaft sleeve and circumferentially limiting the shaft sleeve, a second supporting mechanism for supporting a half shaft and a tightening block for being connected with the half shaft and driving the half shaft to rotate, and the shaft sleeve is in threaded connection with the half shaft. According to the shaft sleeve installation device of the rear-drive bridge type transmission system, the shaft sleeve can be screwed or unscrewed, a special press and a special tool are not needed, the production cost can be reduced, and the shaft sleeve and a half shaft can be conveniently assembled.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle transmission systems, and specifically relates to a shaft sleeve installation device for a rear-drive electric bridge transmission system. Background Art

[0002] In recent years, in order to meet the development needs of the national energy strategy and achieve energy conservation and emission reduction, electric drive technology has developed rapidly. In the field of light commercial logistics vehicles, the current mainstream models all use rear-wheel drive electric axle transmission systems, the wheel side adopts a semi-floating structure, and the double-row tapered bearings installed on the wheel side are axially fixed and axially limited by bushings.

[0003] The double-row tapered bearing on the rear electric drive axle half shaft is limited by the sleeve. In the prior art, the sleeve and the half shaft are fitted with interference fit and pressed into assembly by a press and special tooling. Due to the coaxial design of the electric drive axle, the length of the left half shaft is close to 1m, and the stroke of the ordinary press is not enough. Customized presses and tooling are required, which is costly and not suitable for mass production.

[0004] For example, the patent document with publication number CN1420290A discloses a method for installing a sleeve on a shaft and a sleeve device for installation, the sleeve device includes a longitudinally split sleeve (4), the sleeve is conical and cooperates with a mechanical element (1) having a corresponding conical hole, an annular flange (5) is connected to the sleeve (4) and supports a plurality of separate fastening devices (6), the fastening devices are pressed against the mechanical element to increase the clamping between the shaft, the sleeve and the mechanical element, the sleeve and the flange have a matching device to prevent the sleeve and the flange from moving at an angle relative to each other, the method for installing the sleeve device includes placing the sleeve to wrap around the shaft, placing the annular flange so that the fastening device faces the mechanical element, fastening the first fastening device against the gap of the sleeve, and then fastening the other fastening devices. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a shaft sleeve installation device for a rear-drive electric bridge transmission system, the purpose of which is to reduce production costs and facilitate the assembly of the shaft sleeve and the half shaft.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a rear-wheel drive electric bridge transmission system sleeve installation device, including a first support mechanism that provides support for the sleeve and circumferentially limits the sleeve, a second support mechanism that provides support for the half-shaft, and a tightening block that is connected to the half-shaft and drives the half-shaft to rotate, and the sleeve is threadedly connected to the half-shaft.

[0007] The first supporting mechanism comprises a first supporting plate, and a limiting groove for accommodating the shaft sleeve is arranged on the first supporting plate.

[0008] The first supporting mechanism further includes a bottom plate, and the first supporting plate is arranged on the bottom plate.

[0009] The first supporting mechanism further includes a clamping plate connected to the bottom plate and the first supporting plate, and a plurality of clamping plates are provided.

[0010] The second supporting mechanism includes a second supporting plate and a supporting cushion block arranged on the second supporting plate, and a positioning groove for the half shaft to be embedded in the supporting cushion block is arranged on the supporting cushion block.

[0011] The positioning groove is a V-shaped groove.

[0012] The utility model discloses a shaft sleeve installation device for a rear-drive electric bridge transmission system, which can realize the tightening or loosening of the shaft sleeve without the need for a special press and tooling, thereby reducing production costs and facilitating the assembly of the shaft sleeve and the half shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] This specification includes the following drawings, which show the following contents:

[0014] Figure 1 It is a structural schematic diagram of the shaft sleeve installation device of the rear-drive electric bridge transmission system of the utility model;

[0015] Figure 2 It is another structural schematic diagram of the shaft sleeve installation device of the rear-drive electric bridge transmission system of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the tightening block;

[0017] Marked in the figure: 1, half shaft; 2, second support plate; 3, support pad; 4, clamping block; 5, first support plate; 6, tightening block; 7, bottom plate. DETAILED DESCRIPTION

[0018] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0019] It should be noted that, in the following embodiments, the “first” and “second” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequential order of execution, but are merely for the convenience of description.

[0020] like Figures 1 to 3As shown, the utility model provides a rear-wheel drive electric bridge transmission system shaft sleeve installation device, including a first support mechanism for providing support for the shaft sleeve and circumferentially limiting the shaft sleeve, a second support mechanism for providing support for the half shaft 1, and a tightening block 6 for connecting with the half shaft 1 and driving the half shaft 1 to rotate, the shaft sleeve is threadedly connected to the half shaft 1, and the center hole of the shaft sleeve is an internal threaded hole.

[0021] Specifically, if Figure 1 and Figure 2 As shown, the first support mechanism includes a bottom plate 7, a first support plate 5, and a clamping plate connected to the bottom plate 7 and the first support plate 5, and a limiting groove for accommodating the shaft sleeve is provided on the first support plate 5. The bottom plate 7 is horizontally arranged, and the first support plate 5 is vertically arranged. The lower end of the first support plate 5 is fixedly connected to the bottom plate 7, and the limiting groove is a groove arranged on the top surface of the first support plate 5. The shape of the limiting groove matches the shape of the shaft sleeve. After the shaft sleeve is embedded in the limiting groove, when the half shaft 1 rotates, the shaft sleeve cannot rotate, and finally the shaft sleeve can be fixed on the half shaft 1, and the bearing contacts the bearing on the half shaft 1, so as to realize the axial limitation of the bearing on the half shaft 1.

[0022] like Figure 1 and Figure 2 As shown, a plurality of clamping plates are provided, and the clamping plates are distributed on two opposite sides of the first support plate 5 . The provision of the clamping plates can improve the reliability of the connection between the first support plate 5 and the bottom plate 7 .

[0023] like Figure 1 and Figure 2 As shown, in this embodiment, two pressing plates are provided.

[0024] like Figure 1 and Figure 2 As shown, the second support mechanism includes a second support plate 2 and a support pad 3 arranged on the second support plate 2, and a positioning groove for the half shaft 1 to be embedded is arranged on the support pad 3. The second support plate 2 is arranged vertically, and the lower end of the second support plate 2 is fixedly connected to the bottom plate 7, and the support pad 3 is fixedly arranged at the upper end of the second support plate 2. The positioning groove is a groove arranged on the top surface of the support pad 3, and the positioning groove is a V-shaped groove. The two opposite inner wall surfaces in the positioning groove are in contact with the outer cylindrical surface of the half shaft 1, and the half shaft 1 is in a horizontal state.

[0025] like Figures 1 to 3As shown, the tightening block 6 is fixedly connected to the flange set at the end of the half shaft 1 by bolts, and two through holes for the bolts to pass through are set on the tightening block 6. A hexagonal nut head protruding outward is set at the center of the tightening block 6. The hexagonal nut head is located between the two through holes on the tightening block 6. The hexagonal nut head is coaxial with the half shaft 1. The hexagonal nut head is used to cooperate with a wrench. The hexagonal nut head is a regular hexagonal structure, so that the wrench can drive the tightening block 6 to rotate, and the tightening block 6 can drive the half shaft 1 to rotate around the axis relative to the sleeve, so as to realize the tightening or loosening of the sleeve.

[0026] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A shaft sleeve mounting device for a rear-drive electric axle transmission system, characterized in that: It includes a first supporting mechanism for supporting the shaft sleeve and limiting the shaft sleeve circumferentially, a second supporting mechanism for supporting the half shaft, and a tightening block for connecting with the half shaft and driving the half shaft to rotate. The shaft sleeve is threadedly connected to the half shaft.

2. The rear-drive electric axle transmission system bushing installation device according to claim 1, characterized in that: The first supporting mechanism comprises a first supporting plate, and a limiting groove for accommodating the shaft sleeve is arranged on the first supporting plate.

3. The rear-drive electric axle transmission system bushing installation device according to claim 2, characterized in that: The first supporting mechanism further includes a bottom plate, and the first supporting plate is arranged on the bottom plate.

4. The rear-drive electric axle transmission system bushing installation device according to claim 3, characterized in that: The first supporting mechanism further includes a clamping plate connected to the bottom plate and the first supporting plate, and a plurality of clamping plates are provided.

5. The rear-drive electric axle transmission system bushing installation device according to any one of claims 1 to 4, characterized in that: The second supporting mechanism includes a second supporting plate and a supporting cushion block arranged on the second supporting plate, and a positioning groove for the half shaft to be embedded in the supporting cushion block is arranged on the supporting cushion block.

6. The rear-drive electric axle transmission system bushing installation device according to claim 5, characterized in that: The positioning groove is a V-shaped groove.

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