Powder metallurgy bevel gear for transmission of millstone motor

Abstract

The utility model discloses a powder metallurgy bevel gear for transmission of a millstone motor. The powder metallurgy bevel gear for transmission of the grinding disc motor comprises a bevel gear body, the bevel gear body is manufactured through the powder metallurgy technology, a heat dissipation ring is fixedly installed on the bevel gear body in a sleeved mode, and a plurality of heat dissipation fins are evenly installed on the periphery of the heat dissipation ring. According to the powder metallurgy bevel gear for transmission of the grinding disc motor, the bevel gear body manufactured through the powder metallurgy technology is arranged, the heat dissipation ring is installed on the bevel gear body in a sleeved mode, the structural strength of the bevel gear body can be effectively improved, the heat dissipation fins are installed on the periphery of the heat dissipation ring, and through rotation of the heat dissipation fins, the transmission efficiency of the grinding disc motor is improved. The air velocity near the bevel gear body is increased, and the heat dissipation speed of the bevel gear body and the rotating shaft is increased.

Description

Technical Field

[0001] This utility model relates to the field of bevel gear technology, and in particular to a powder metallurgy bevel gear for a grinding disc motor drive. Background Technology

[0002] An electric grinding disc is a grinding disc driven by an electric motor. An electric grinding disc generally includes a frame, a motor, a bevel gear transmission component, and a grinding disc.

[0003] The bevel gears used in existing electric grinding discs as transmission components do not have good heat dissipation. As a transmission component, the bevel gears generate a lot of heat during continuous meshing and rotation. High temperatures not only affect the service life of the gears but also the service life of the motor shaft.

[0004] Therefore, it is necessary to provide a powder metallurgy bevel gear for grinding disc motor drive to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of the above situation and to overcome the defects of the prior art, this utility model provides a powder metallurgy bevel gear for grinding disc motor transmission that can improve the heat dissipation speed of bevel gears.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] The powder metallurgy bevel gear for the transmission of the grinding disc motor includes: a bevel gear body, which is manufactured using powder metallurgy technology, and a heat dissipation ring is fixedly mounted on the bevel gear body, with multiple heat dissipation fins evenly installed around the heat dissipation ring.

[0008] Preferably, a keyway is formed on the bevel gear body.

[0009] Preferably, a threaded countersunk hole is formed on one side of the bevel gear body, and a first screw is installed in the threaded countersunk hole.

[0010] Preferably, a threaded hole is provided on the heat dissipation ring, and a second screw is installed in the threaded hole.

[0011] Preferably, the heat sink is inclined.

[0012] Preferably, the heat dissipation ring is made of copper alloy or aluminum alloy.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) This utility model sets up a bevel gear body manufactured by powder metallurgy technology and installs a heat dissipation ring on the bevel gear body, which can effectively improve the structural strength of the bevel gear body. Heat dissipation fins are installed around the heat dissipation ring, which can increase the air flow rate near the bevel gear body through the rotation of the heat dissipation fins, which is conducive to improving the heat dissipation speed of the bevel gear body and the rotating shaft.

[0015] (2) By setting the heat sink to be inclined, this utility model can improve the heat dissipation effect of the bevel gear body;

[0016] (3) By opening a threaded countersunk hole on one side of the bevel gear body and installing a first screw in the threaded countersunk hole, the present invention can facilitate the installation and fixing of the bevel gear body without interfering with the installation of the heat dissipation ring.

[0017] (4) By opening a threaded hole on the heat dissipation ring and installing a second screw in the threaded hole, the heat dissipation ring can be fixed and the first screw can be prevented from turning over and loosening. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of the powder metallurgy bevel gear for the transmission of a grinding disc motor provided by this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the installation of the powder metallurgy bevel gear used for the transmission of the grinding disc motor.

[0020] Figure 3 for Figure 1 A schematic diagram of an embodiment of the bevel gear body in a powder metallurgy bevel gear for a grinding disc motor drive is shown.

[0021] Figure 4 for Figure 1 The diagram shows the structure of the heat dissipation ring in the powder metallurgy bevel gear used for the transmission of the grinding disc motor.

[0022] The corresponding names of the attached figures are: 1-bevel gear body, 2-center hole, 3-heat sink ring, 4-heat sink, 5-shaft, 6-keyway, 7-threaded countersunk hole, 8-first screw, 9-threaded hole, 10-second screw. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0024] Example 1:

[0025] like Figure 1-4As shown, the powder metallurgy bevel gear for a grinding disc motor drive provided by this utility model includes: a bevel gear body 1 mounted on the rotating shaft 5 of the grinding disc motor. The bevel gear body 1 is manufactured using powder metallurgy technology. A central hole 2 is opened in the middle of the bevel gear body 1, through which the rotating shaft 5 passes and is fixed. The fixing method can be a conventional fixing method, which will not be described in detail here. A heat dissipation ring 3 is fitted onto the bevel gear body 1. The heat dissipation ring 3 can be made of copper alloy or aluminum alloy. The heat dissipation ring 3 improves the structural strength of the bevel gear body 1. Multiple heat dissipation fins 4 are evenly installed around the heat dissipation ring 3. When the bevel gear body 1 rotates, the heat dissipation ring 3 rotates accordingly. When the heat dissipation fins 4 rotate, the airflow speed in the vicinity is accelerated, which is beneficial to the heat dissipation of the bevel gear body 1 and the rotating shaft 5, and also beneficial to the heat dissipation of the grinding disc motor bearings. It is worth noting that the bevel gear body 1 manufactured using powder metallurgy technology has higher precision and faster manufacturing speed.

[0026] By setting up a bevel gear body 1 manufactured by powder metallurgy technology and installing a heat dissipation ring 3 on the bevel gear body 1, the structural strength of the bevel gear body 1 can be effectively improved. Heat dissipation fins 4 are installed around the heat dissipation ring 3, which can increase the air flow rate near the bevel gear body 1 through the rotation of the heat dissipation fins 4, which is conducive to improving the heat dissipation speed of the bevel gear body 1 and the rotating shaft 5.

[0027] Example 2:

[0028] like Figure 1 As shown, in this embodiment, a keyway 6 is provided on the inner wall of the central hole 2 of the bevel gear body 1, and a spline is installed on the corresponding rotating shaft 5. During installation, the spline of the rotating shaft 5 is aligned with the keyway 6 to prevent the bevel gear body 1 from slipping when rotating.

[0029] By providing a keyway 6 on the inner wall of the central hole 2, it is helpful to prevent the bevel gear body 1 from slipping during rotation.

[0030] Example 3:

[0031] like Figure 3 As shown, this embodiment is used in conjunction with embodiment 2. A threaded countersunk hole 7 is opened on one side of the bevel gear body 1. A first screw 8 is installed in the threaded countersunk hole 7. During installation, the first screw 8 is screwed into the threaded countersunk hole 7 and its end is pressed tightly against the rotating shaft 5, thereby connecting and fixing the rotating shaft 5 to the bevel gear body 1. The tail of the first screw 8 does not protrude from the threaded countersunk hole 7, thereby preventing the heat dissipation ring 3 from being unable to be fitted onto the bevel gear body 1.

[0032] By opening a threaded countersunk hole 7 on one side of the bevel gear body 1 and installing a first screw 8 in the threaded countersunk hole 7, the installation and fixation of the bevel gear body 1 can be facilitated without interfering with the installation of the heat dissipation ring 3.

[0033] Example 4:

[0034] like Figure 4 As shown, in this embodiment, a threaded hole 9 is opened on the heat dissipation ring 3, which avoids the heat sink 4. A second screw 10 is installed in the threaded hole 9. The end diameter of the second screw 10 is adapted to the threaded countersunk hole 7. In use, the heat dissipation ring 3 is sleeved on the bevel gear body 1, and the threaded hole 9 is aligned with the tail end of the first screw 8. The second screw 10 is screwed into the threaded hole 9, so that the end of the second screw 10 is screwed into the threaded countersunk hole 7 and presses tightly against the tail end of the first screw 8. This can realize the installation and fixation of the heat dissipation ring 3, and also prevent the first screw 8 from turning back and loosening, which would affect the fixation of the bevel gear body 1.

[0035] By opening a threaded hole 9 on the heat dissipation ring 3 and installing a second screw 10 in the threaded hole 9, the heat dissipation ring 3 can be fixed and the first screw 8 can be prevented from turning over and loosening.

[0036] Example 5:

[0037] like Figure 1-2 As shown, in this embodiment, the heat sink 4 is inclined and forms a certain angle with the axis of the rotating shaft 5. When the heat sink ring 3 rotates, the inclined heat sink 4 blows air towards the bevel gear body 1 or in the opposite direction (the side of the grinding disc motor). When blowing air towards the side of the bevel gear body 1, the heat dissipation effect of the bevel gear body 1 can be further improved.

[0038] By setting the heat sink 4 to an angle, the heat dissipation effect of the bevel gear body 1 can be improved.

[0039] Working principle: When in use, the grinding disc motor starts, driving the rotating shaft 5 to rotate the bevel gear body 1. The heat dissipation ring 3 rotates with the bevel gear body 1. When the heat dissipation ring 3 drives the heat dissipation fins 4 to rotate, the rotation of the heat dissipation fins 4 can accelerate the air flow speed near the bevel gear body 1, which is beneficial to the heat dissipation of the bevel gear body 1 and the rotating shaft 5.

Claims

1. A powder metallurgy bevel gear for a grinding disc motor drive, characterized in that, include: The bevel gear body (1) is manufactured using powder metallurgy technology. A heat dissipation ring (3) is fixedly installed on the bevel gear body (1), and multiple heat dissipation fins (4) are evenly installed around the heat dissipation ring (3).

2. The powder metallurgy bevel gear for a grinding disc motor drive according to claim 1, characterized in that, The heat sink (4) is tilted.

3. The powder metallurgy bevel gear for a grinding disc motor drive according to claim 1, characterized in that, A keyway (6) is provided on the bevel gear body (1).

4. The powder metallurgy bevel gear for a grinding disc motor drive according to claim 1, characterized in that, A threaded countersunk hole (7) is opened on one side of the bevel gear body (1), and a first screw (8) is installed in the threaded countersunk hole (7).

5. A powder metallurgy bevel gear for a grinding disc motor drive according to claim 1, characterized in that, A threaded hole (9) is provided on the heat dissipation ring (3), and a second screw (10) is installed in the threaded hole (9).

6. A powder metallurgy bevel gear for a grinding disc motor drive according to claim 1, characterized in that, The heat dissipation ring (3) is made of copper alloy or aluminum alloy.

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