Sealed heat dissipation type shaft shell

Abstract

The utility model discloses a sealed heat dissipation type shaft shell, and relates to the field of shaft shells, the key points of the technical scheme are that the sealed heat dissipation type shaft shell comprises a half shell A and a half shell B which are symmetrically arranged and made of heat dissipation materials, the half shell A and the half shell B are spliced to form a complete shaft shell, and openings in the top end of the half shell A and the bottom end of the half shell B are both small. Two openings are formed in the half shell A and the half shell B and used for limiting the installed bearing, sealing rings are installed at the two openings, heat dissipation fins are installed on the outer side wall of the half shell A and the outer side wall of the half shell B, and protrusions for limiting axial rotation of the bearing are installed on the half shell A and the half shell B; the bearing sealing device has the advantages that the bearing does not need to be installed in the mode that the bearing completely penetrates through the sealing device, installation is convenient and fast, meanwhile, the heat dissipation fins are installed on the half shell A and the half shell B so that the heat dissipation area can be increased, and the heat dissipation effect is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to the axle shell field, more specifically, it relates to a sealed heat dissipation type axle shell. BACKGROUND

[0002] The axle shell is an important component in mechanical transmission equipment, mainly used for supporting and protecting the rotating shaft and its bearing, and ensuring the stable operation of the shaft system under high-speed rotation or high-load working conditions. Its structure is usually hollow cylindrical, with a bearing mounting cavity inside for installing bearings and rotating shafts.

[0003] Currently, sealing devices are usually provided at both ends of the shell to prevent lubricating oil leakage and external impurities from entering the bearing interior. At the same time, the axle shell is made of heat-conducting material to promote rapid heat dissipation, thereby forming a sealed heat dissipation type axle shell. Due to the blocking of the sealing device, the installation of this type of axle shell is very troublesome. At the same time, the axle shell made of a single heat-conducting material has limited contact surface (heat dissipation surface) with the outside, resulting in poor heat dissipation effect.

[0004] In high-speed rotating equipment, the axle shell will cause temperature rise due to friction and heat accumulation, affecting the stability and life of the equipment.

[0005] Therefore, in order to solve the above technical problems, the present application provides a sealed heat dissipation type axle shell. SUMMARY

[0006] In view of the deficiencies in the prior art, the purpose of the present utility model is to provide a sealed heat dissipation type axle shell.

[0007] To achieve the above-mentioned purpose, the present utility model provides the following technical scheme: a sealed heat dissipation type axle shell, comprising symmetrical half-shells A and B made of heat-dissipating material, which are spliced to form a complete axle shell, the top end of the half-shell A and the bottom end of the half-shell B are both small in opening, used for limiting the installed bearing, and both opening parts are provided with sealing rings, the outer side walls of the half-shell A and the half-shell B are both provided with heat-dissipating fins, and the half-shell A and the half-shell B are both provided with protrusions for limiting the axial rotation of the bearing.

[0008] Preferably, the half-shell A and the half-shell B are symmetrical and made of heat-dissipating material, which are spliced to form a complete axle shell, the top end of the half-shell A and the bottom end of the half-shell B are both small in opening, used for limiting the installed bearing, and both opening parts are provided with sealing rings, the outer side walls of the half-shell A and the half-shell B are both provided with heat-dissipating fins, and the half-shell A and the half-shell B are both provided with protrusions for limiting the axial rotation of the bearing.

[0009] Preferably, the half-shell A and the half-shell B are made of aluminum alloy material.

[0010] Preferably, the heat dissipation fins are evenly distributed along the axial direction of the half shell A and the half shell B, and the heat dissipation fins are in a wave shape or a zigzag shape.

[0011] Preferably, the outer side wall of the half shell A is fixedly connected with a connecting plate A with a through hole at a position close to the bottom end, and the outer side wall of the half shell B is fixedly connected with a connecting plate B with a top fixing screw at a position close to the top end.

[0012] Preferably, an annular groove is formed on the connecting surface of the half shell A, and an annular block is fixedly connected to the connecting surface of the half shell B, and a rubber layer is bonded to the inner surface of the annular groove, thereby improving the sealing performance of the connection between the half shell A and the half shell B.

[0013] Preferably, the sealing ring comprises a root connected to the inner side wall of the opening of the half shell A and the half shell B, and an outer lip and an inner lip integrally formed on the top of the root, and the outer lip and the inner lip form a V-shaped structure.

[0014] Preferably, the material of the sealing ring is fluororubber, which has excellent chemical corrosion resistance, high temperature resistance and aging resistance.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model does not need to install the bearing by penetrating the sealing device, and the installation is convenient, and the half shell A and the half shell B are both provided with heat dissipation fins to increase the heat dissipation area and improve the heat dissipation effect, thereby solving the problem that the sealing and heat dissipation type shaft shell is blocked by the sealing device, and the contact area between the shaft shell made of a single heat conductive material and the outside is limited.

[0017] 2. The sealing ring has a V-shaped structure, and the V-shaped structure has a certain amount of interference, and when the sealing ring contacts the bearing, stress is generated on the sealing surface through the resilience of the structure, so that the bearing is contacted more closely.

[0018] 3. When the connecting surfaces of the half shell A and the half shell B contact each other, the annular block on the half shell B is inserted into the annular groove on the half shell A, and the annular block extrudes the rubber on the inner surface of the annular groove to fill the small gap between the annular groove and the annular block, thereby improving the sealing performance of the connection between the half shell A and the half shell B. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings described herein are intended to provide further understanding of the present application, form a part of the application, and the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 is a schematic diagram of the overall structure of the present application;

[0021] Figure 2 is another angle of the specific structure of the present application Figure 1 schematic diagram;

[0022] Figure 3 is a schematic diagram of the cross-sectional structure of the present application;

[0023] Figure 4 is a schematic diagram of the cross-sectional structure of the present application; Figure 3

[0024] In the figure: 1, half shell A; 2, half shell B; 3, sealing ring; 301, root; 302, outer lip; 303, inner lip; 4, heat dissipation fin; 5, connecting plate A; 6, through hole; 7, connecting plate B; 8, screw; 9, annular groove; 10, annular block; 11, protrusion. DETAILED DESCRIPTION

[0025] As shown in Figures 1-4 , the present application provides a sealed heat dissipation type shaft shell, comprising symmetrical half shells A1 and B2 made of heat dissipation material, generally made of aluminum alloy material, which are spliced to form a complete shaft shell, the top end of the half shell A1 and the bottom end of the half shell B2 are both small in opening, used for limiting the installed bearing, and both opening parts are provided with a sealing ring 3, and the outer side wall of the half shell A1 and the half shell B2 is provided with a heat dissipation fin 4, and the half shell A1 and the half shell B2 are provided with a protrusion 11 for limiting the axial rotation of the bearing.

[0026] ​The bearing installed by the utility model is also designed into the shape of narrow at top and bottom and wide in the middle, meanwhile, the outer side wall thereof also starts to have the groove inserted into the protrusion 11 to adapt to the half shell A1 and the half shell B2, the half shell A1 and the half shell B2 are designed in a split type, can be inserted into the top and bottom of the bearing respectively, then the splicing between the half shell A1 and the half shell B2 is completed, the bearing can be installed therein (as the opening of the top end of the half shell A1 and the bottom end of the half shell B2 is small, the bearing can be well limited therein, the protrusion 11 cooperates with the groove on the bearing to limit the axial rotation of the bearing), the bearing does not need to be installed by penetrating the sealing device completely (the elastic sealing device such as sealing ring needs to be pressed hard to penetrate), the installation is more convenient, meanwhile, the heat dissipation fins 4 are installed on the half shell A1 and the half shell B2, and the heat dissipation fins 4 are uniformly distributed along the axial direction of the half shell A1 and the half shell B2, the shape thereof is wave-shaped or sawtooth-shaped to increase the heat dissipation area, and the heat dissipation effect is better.

[0027] Meanwhile, the sealing ring 3 of the utility model comprises the root 301 connected with the inner side wall of the opening of the half shell A1 and the half shell B2, the outer lip 302 and the inner lip 303 integrally formed at the top of the root 301 and the root 301, the V-shaped structure is formed between the outer lip 302 and the inner lip 303, the V-shaped structure has a certain amount of interference, when the sealing ring 3 contacts with the bearing, the stress is generated on the sealing working surface through the resilience of the structure itself, so that the bearing is contacted more closely to achieve better sealing effect, and the sealing ring 3 is preferably made of fluorine rubber, the fluorine rubber has outstanding chemical corrosion resistance, high temperature resistance and aging resistance.

[0028] And the utility model discloses the specific structure of splicing between the half shell A1 and the half shell B2: the connecting plate A5 of the outer side wall of the half shell A1 is fixedly connected with the through hole 6 of the inside opening in the position close to the bottom end, the connecting plate B7 of the outer side wall of the half shell B2 is fixedly connected with the top fixed screw rod 8 in the position close to the top end, when the connecting surface of the half shell A1 and the half shell B2 contacts, the screw rod 8 on the connecting plate B7 is inserted into the through hole 6 of the connecting plate A5, after inserting, the nut is installed on the screw rod 8 by rotating the nut clockwise, the nut moves downwards along the screw rod 8 and slowly abuts against the surface of the connecting plate A5, the fixing of the connecting plate A5 and the connecting plate B7 is completed, and the splicing between the half shell A1 and the half shell B2 is completed, on the contrary, the nut is disassembled, and the half shell A1 and the half shell B2 are separated, the disassembly between the half shell A1 and the half shell B2 is completed.

[0029] Further, the connecting surface of the half shell A1 is provided with an annular groove 9, the connecting surface of the half shell B2 is fixedly connected with an annular block 10, and the inner surface of the annular groove 9 is bonded with a rubber layer, so that when the connecting surfaces of the half shell A1 and the half shell B2 are contacted, the annular block 10 on the half shell B2 is just inserted into the annular groove 9 on the half shell A1, and the annular block 10 will extrude the rubber on the inner surface of the annular groove 9 to fill the small gap between the annular groove 9 and the annular block 10, thereby improving the sealing performance of the connection between the half shell A1 and the half shell B2.

[0030] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any person skilled in the art can implement the present application according to the drawings and the above description. However, any equivalent changes, modifications and evolutions made by those skilled in the art within the scope of the technical scheme of the present application, using the disclosed technical content, are equivalent embodiments of the present application. Meanwhile, any equivalent changes, modifications and evolutions made according to the essential technology of the present application are still within the protection scope of the technical scheme of the present application.

Claims

1. A sealed, heat-dissipating type axle housing characterized by: The application relates to a bearing shell, which comprises half shells A (1) and B (2) made of heat-dissipating material and symmetrically arranged, the top end of the half shell A (1) and the bottom end of the half shell B (2) are both small in opening and used for limiting the installed bearing, sealing rings (3) are arranged at the two opening positions, heat-dissipating fins (4) are arranged on the outer side walls of the half shells A (1) and B (2), and protrusions (11) for limiting the axial rotation of the bearing are arranged on the half shells A (1) and B (2).

2. A sealed heat-dissipating type axle housing according to claim 1, wherein: The half shells A (1) and B (2) are made of aluminum alloy material.

3. The sealed, heat-dissipating type axle housing according to claim 1, wherein: The heat-dissipating fins (4) are uniformly distributed along the axial direction of the half shells A (1) and B (2) and are in the shape of waves or sawteeth.

4. The sealed, heat-dissipating type axle housing according to claim 1, wherein: The outer side wall of the half shell A (1) is fixedly connected with a connecting plate A (5) with a through hole (6) arranged in the connecting plate A (5) near the bottom end, and the outer side wall of the half shell B (2) is fixedly connected with a connecting plate B (7) with a top fixing screw (8) arranged in the connecting plate B (7) near the top end.

5. A sealed, heat-dissipating type axle housing according to claim 4, wherein: An annular groove (9) is arranged on the connecting surface of the half shell A (1), an annular block (10) is fixedly connected to the connecting surface of the half shell B (2), and a rubber layer is arranged on the inner surface of the annular groove (9).

6. The sealed, heat-dissipating type axle housing of claim 1, wherein: The sealing ring (3) comprises a root (301) connected with the inner side walls of the openings of the half shells A (1) and B (2), an outer lip (302) and an inner lip (303) integrally formed on the top of the root (301), and a V-shaped structure is formed between the outer lip (302) and the inner lip (303).

7. The sealed, heat-dissipating type axle housing of claim 1, wherein: The material of the sealing ring (3) is fluorine rubber.

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