Heavy vehicle dust-proof propeller shaft support

Abstract

The utility model discloses a heavy -duty vehicle dustproof transmission shaft support adopts the cooperation of the middle part support ring of steel material and support seat to replace cast iron frame body, is provided with bearing sleeve in the support ring, and the radial shock -proof is realized to the rubber buffer area between bearing sleeve and support ring, and the protective cover is fixed on the middle part support ring towards the outside surface, and the protection of rubber buffer area and bearing outside surface is realized through the protective cover, under the premise of improving the overall rigidity and toughness of this heavy -duty vehicle dustproof transmission shaft support, effectively reduce the influence of external sand and dust to the working area of bearing, effectively improve the service life of transmission shaft support, reduce the failure rate.

Description

Technical Field

[0001] This utility model relates to the field of drive shaft bracket technology, and in particular to a dustproof drive shaft bracket for heavy vehicles. Background Technology

[0002] In the transmission components of heavy vehicles, in order to enable the drive shaft to transmit power more effectively, a drive shaft bracket is needed to fix and support its end.

[0003] Existing driveshaft brackets for heavy vehicles have several technical drawbacks, primarily: 1. The frame of existing driveshaft brackets is mostly made of cast iron, assembled with two symmetrical cast iron flange bolts. While this type of cast iron frame has good rigidity, it is prone to bumps and vibrations during driveshaft operation, and cracks are likely to appear in the cast iron frame after prolonged use; 2. To improve the technology, those skilled in the art have installed a rubber buffer between the bearing and the outer frame. However, after installation, the outer side of the rubber buffer is directly exposed, making it very easy for the outer edge of the bearing and the rubber buffer to wear and break under the impact of dust and gravel.

[0004] In view of the shortcomings of existing technologies, as technical personnel in this industry, how to design a dustproof drive shaft bracket for heavy vehicles through technological improvements, with the aim of improving the poor toughness of existing drive shaft brackets and the shortcomings of rubber buffers in terms of wear resistance and impact resistance, is a technical problem that technical personnel in this industry urgently need to solve. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, this utility model designs a steel-clad structure to cover the bearing, and at the same time, it can achieve an outer protective sleeve to cover the outside of the bearing, preventing sand and dust from damaging the outside of the bearing and the outside of the rubber buffer.

[0006] This utility model discloses a dustproof drive shaft bracket for heavy vehicles, which includes a central support ring, a cover-type or semi-cover-type support seat arranged around the central support ring, and a protective cover fixed on the central support ring; a bearing sleeve is arranged inside the central support ring, and a rubber buffer is arranged between the outer periphery of the bearing sleeve and the central support ring; a bearing is arranged inside the bearing sleeve, and bearing blocking elements are arranged on both the left and right sides of the bearing sleeve.

[0007] The support base is composed of an upper covering and a lower covering; the lower covering includes a lower locking surface and a covering ring, and a side reinforcing area is provided on the lower locking surface; the upper covering includes an upper locking surface and an upper covering surface, and the upper covering surface is a discontinuous covering structure; a locking hole or locking groove is provided at the joint of the upper locking surface and the lower locking surface.

[0008] The rubber buffer zone covers the inner side of the central support ring and the outer periphery of the bearing sleeve. The rubber buffer zone is provided with an outer arc-shaped protrusion and an inner buffer cavity.

[0009] The bearing sleeve has a shrinkage blocking surface on its outer side and an inner blocking ring inside the bearing sleeve. The shrinkage blocking surface and the inner blocking ring cooperate to limit and fix the bearing.

[0010] The protective cover is arc-shaped and has several process holes around its perimeter, which are used to reduce overall weight and increase strength.

[0011] This utility model has the following beneficial effects: Through the above design, this utility model replaces the cast iron frame by using a steel central support ring and support base. A bearing sleeve is set inside the support ring, and a rubber buffer is set between the bearing sleeve and the support ring to achieve radial shock absorption. A protective cover is fixed on the outer side of the central support ring. The protective cover protects the rubber buffer and the outer side of the bearing. While improving the overall rigidity and toughness of this heavy vehicle dustproof drive shaft bracket, it effectively reduces the impact of external sand and dust on the bearing working area, effectively improves the service life of the drive shaft bracket, and reduces the failure rate. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the front three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the rear three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the vertical cross-sectional structure of this utility model; In the figure, 1. Lower covering, 11. Lower locking surface, 12. Covering ring, 13. Side reinforcement area, 2. Upper covering, 20. Locking groove, 21. Upper locking surface, 22. Upper covering surface, 3. Middle support ring, 4. Protective cover, 41. Arc-shaped protective surface, 42. Fixing area, 43. Process hole, 5. Bearing sleeve, 51. Shrinkage blocking surface, 6. Rubber buffer zone, 61. Outer arc-shaped protrusion, 62. Inner buffer cavity, 7. Bearing, 8. Inner blocking ring. Detailed Implementation

[0014] The present invention will be described in detail below. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification.

[0015] As shown in the attached drawings: A dustproof drive shaft bracket for heavy vehicles includes a central support ring 3 made of steel. The central support ring 3 has a covering or semi-covering support seat around its periphery, and a protective cover 4 is fixed on the central support ring 3. A bearing sleeve 5 is provided inside the central support ring 3, and a rubber buffer zone 6 is provided between the periphery of the bearing sleeve 5 and the central support ring 3. A bearing 7 is provided inside the bearing sleeve 5, and bearing blocking elements are provided on both the left and right sides of the bearing sleeve 5.

[0016] As a further structural arrangement, the support base is composed of an upper covering 2 and a lower covering 1. The lower covering 1 includes two lower locking surfaces 11 and a semi-circular covering ring 12. Each of the two lower locking surfaces 11 is provided with a side reinforcing area 13, which reinforces the locking area of ​​the lower covering 1. The upper covering 2 includes two upper locking surfaces 21 and an upper covering surface 22. The two upper covering surfaces 22 form a discontinuous covering structure. For example, the middle area of ​​the semi-circular upper covering surface 22 is broken to form two upper covering surfaces 22 on the left and right. The upper covering 2 and the lower covering 1 are locked and fixed at the locking surfaces on both sides. At the same time, the upper covering 2 and the lower covering 1 are welded and fixed to the periphery of the central support ring 3 at the covering surfaces. The aforementioned middle support ring 3, upper covering 2, and lower covering 1 are all made of steel and are integrally formed by welding, which not only ensures overall strength but also improves toughness to a certain extent. This utility model has a locking groove 20 at the junction of the upper locking surface 2 and the lower locking surface 1 for locking and fixing with the vehicle.

[0017] The key design feature of this invention lies in the fact that the rubber buffer zone 6 covers the inner side of the central support ring 3 and the outer periphery of the bearing sleeve 5. The rubber buffer zone 6 is provided with an outer arc-shaped protrusion 61 and an inner buffer cavity 62. Through the arrangement of the rubber buffer zone 6, a rubber component is used to achieve buffering between the central support ring 3 and the bearing sleeve 5. The inner buffer cavity 62 can absorb energy during deformation, and the outer arc-shaped protrusion 61 uses thickened material for outer protection. This improves the overall durability of the rubber buffer zone 6 while ensuring effective shock absorption.

[0018] like Figure 3 As shown, a contraction blocking surface 51 is provided on the outer side of the bearing sleeve 5, and an inner blocking ring 8 is provided inside the bearing sleeve 5. The contraction blocking surface 51 and the inner blocking ring 8 cooperate to limit and fix the bearing 7. Those skilled in the art can also directly manufacture the bearing sleeve 5 into a cylindrical shape and provide inner blocking rings 8 at both ends of the bearing sleeve 5 to achieve blocking on both sides. However, compared with the method in this embodiment where an inner blocking ring 8 is provided on only one side and a contraction blocking surface 51 is used on the other side, this embodiment has better stability in fixing the bearing 7.

[0019] Furthermore, in this embodiment, the protective cover 4 is divided into two parts: an arc-shaped protective surface 41 and a fixing area 42. The fixing area 42 is annular and is inserted into the middle support ring 3 and riveted or welded to the middle support ring 3 to form a whole. The arc-shaped protective surface 41 is set on the outside and covers the outside of the outer arc-shaped protrusion 61 to form a protective area. In addition, several process holes 43 are set on the periphery of the arc-shaped protective surface 41. The process holes 43 are used to achieve overall weight reduction and strength increase.

[0020] In summary, this utility model replaces the cast iron frame by using a steel central support ring 3 in conjunction with the support base. A bearing sleeve 5 is installed inside the central support ring 3, and a rubber buffer zone 6 is installed between the bearing sleeve 5 and the central support ring 3 to achieve radial shock absorption. A protective cover 4 is fixed on the outer side of the central support ring 3. The protective cover 4 provides protection for the rubber buffer zone and the outer side of the bearing. While improving the overall rigidity and toughness of this heavy vehicle dustproof drive shaft bracket, it effectively reduces the impact of external sand and dust on the bearing working area, effectively improves the service life of the drive shaft bracket, and reduces the failure rate.

Claims

1. A dustproof drive shaft bracket for heavy-duty vehicles, characterized in that: It includes a central support ring, with a covering or semi-covering support seat on the periphery of the central support ring, and a protective cover fixed on the central support ring; a bearing sleeve is provided inside the central support ring, and a rubber buffer is provided between the periphery of the bearing sleeve and the central support ring; a bearing is provided inside the bearing sleeve, and bearing blocking components are provided on both the left and right sides of the bearing sleeve.

2. The dustproof drive shaft bracket for heavy vehicles as described in claim 1, characterized in that: The support base is composed of an upper covering and a lower covering; the lower covering includes a lower locking surface and a covering ring, and a side reinforcing area is provided on the lower locking surface; the upper covering includes an upper locking surface and an upper covering surface, and the upper covering surface is a discontinuous covering structure; a locking hole or locking groove is provided at the joint of the upper locking surface and the lower locking surface.

3. The dustproof drive shaft bracket for heavy vehicles as described in claim 1, characterized in that: The rubber buffer zone covers the inner side of the central support ring and the outer periphery of the bearing sleeve. The rubber buffer zone is provided with an outer arc-shaped protrusion and an inner buffer cavity.

4. The dustproof drive shaft bracket for heavy vehicles as described in claim 1, characterized in that: The bearing sleeve has a shrinkage blocking surface on its outer side and an inner blocking ring inside the bearing sleeve. The shrinkage blocking surface and the inner blocking ring cooperate to limit and fix the bearing.

5. A dustproof drive shaft bracket for heavy vehicles as described in claim 1, characterized in that: The protective cover is arc-shaped and has several process holes around its perimeter.

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