High-precision gear

Abstract

The utility model belongs to the technical field of gears, and particularly relates to a high-precision gear which comprises a gear body, the gear body is of an annular structure with teeth on the edge, key grooves are formed in the inner wall of the gear body in the radial direction, a heat dissipation pipe is fixed to the end face of the gear body and bent in a sector-ring shape, and hoses are fixedly communicated with two openings of the heat dissipation pipe. Two drainage pipes are inserted in the middle of the gear body, end openings of the two drainage pipes are in interference fit with one ends of the two guide pipes respectively, an inner ring is integrally installed in the middle of the gear body, and the inner edge of the inner ring coincides with the inner edge of the key groove; two sleeves are installed on the outer side of the inner ring in a penetrating mode and communicate with the key groove. Heat is continuously absorbed through the cold air channel, the high-precision gear can be continuously cooled in a closed environment, and heat dissipation and impurity interference reduction are both considered.

Description

Technical Field

[0001] The utility model belongs to the technical field of gears, and specifically relates to a high-precision gear. Background Art

[0002] High-precision gears can ensure more uniform contact between tooth surfaces, reduce sliding and wear, and thus greatly improve transmission efficiency. Low-precision gears may cause energy loss, temperature rise, and reduced efficiency. In particular, surface wear often leads to a decrease in gear accuracy. A carburized layer needs to be added to the gear surface to improve wear resistance.

[0003] For high-temperature, high-speed and high-load transmission systems, high-precision gears often need to withstand higher temperatures. In order to prevent the gears from overheating and causing a decrease in rigidity, several heat dissipation holes are selectively opened on the gears to increase the contact surface with the airflow for heat dissipation.

[0004] Existing gears selectively groove their teeth to increase the heat dissipation area and prevent overheating from reducing precision. However, high-precision gears are easily disturbed by impurities such as dust and are generally set to transmit in a sealed environment. There is almost no heat exchange with the outside air, and it is difficult to achieve both heat dissipation and reducing impurity interference. For this reason, we propose a high-precision gear. Utility Model Content

[0005] The purpose of this utility model is to provide a high-precision gear, which continuously absorbs heat by using a cold air channel, and can continuously cool the high-precision gear in a closed environment, taking into account heat dissipation and reducing interference from impurities.

[0006] The technical solutions adopted in this utility are as follows:

[0007] A high-precision gear comprises a gear body, the gear body is an annular structure with teeth on the edge, a keyway is radially provided on the inner wall of the gear body, a heat dissipation pipe is fixed on the end face of the gear body, the heat dissipation pipe is fan-shaped, both openings of the heat dissipation pipe are connected and fixed with a hose, two ports of the hose away from the heat dissipation pipe are connected and fixed with a conduit, one end of the two conduits extends into the keyway, two drainage pipes are inserted in the middle of the gear body, the two drainage pipe ports are respectively interference fit with one end of the two conduits, after the gear body is machined and formed, the heat dissipation pipe made of alloy is bent and bonded to the end face of the gear body, and the two drainage pipes are pre-embedded and installed in Inside the drive shaft, one port of the two drainage tubes protrudes slightly along the key of the drive shaft. During assembly, the gear body is sleeved on the outside of the drive shaft until the key of the drive shaft is embedded in the keyway, and then the hose is pulled to extend, and the two catheters are moved to insert into the keyway and tightly plugged with the two drainage tubes respectively. The heat dissipation pipe, two hoses, two catheters and two drainage tubes form a cold air channel. Cold air is blown along the cold air channel through an external air source, which can form a temperature difference inside and outside the cold air channel to take away heat, making it convenient for the cold air channel to continuously absorb heat from the gear body, and can continuously cool down the high-precision gear in a closed environment. At the same time, the drive shaft and high-precision gears are transmitted in a closed environment, taking into account heat dissipation and reducing interference from impurities.

[0008] An inner ring is integrally installed in the middle of the gear body, and the inner edge of the inner ring coincides with the inner edge of the keyway. The inner ring is used to support the two conduits and enhance the structural strength in the middle of the gear body, taking into account both heat dissipation and rigidity improvement.

[0009] Two sleeves are installed through the outer side of the inner ring, and the two sleeves are connected to the key slot. The two sleeves are respectively sleeved on the outside of the two catheters. When the two catheters are inserted into the key slots, the two sleeves are used to guide the two catheters respectively, thereby reducing the degree of skewness of the two catheters and ensuring the accuracy of the two catheters aligning with the two drainage tubes.

[0010] The outer sides of the two catheters are rotatably installed with threaded sleeves, and the inner sides of the two threaded sleeves are respectively threadedly connected to the outer sides of the two sleeves. When the two catheters are respectively inserted into the two drainage tubes, the two threaded sleeves are rotated forward and sleeved on the outside of the two threaded sleeves and locked with threads, thereby stably supporting the two catheters and allowing the two catheters to be continuously inserted into the drainage tubes.

[0011] A sealing gasket is fixed on one side of the keyway close to the hose, and the sealing gasket is penetrated by two conduits. The sealing gasket is used to seal the gap between the key of the transmission shaft and the keyway, so that the key can be inserted into the keyway conveniently.

[0012] Reinforced parts are fixed at the connection points between the two hoses and the conduit. Both of the reinforced parts are tubular structures, which enhance the structural strength of the connection to resist the centrifugal effect of the connection when the gear body rotates, thereby reducing the occurrence of being pulled apart.

[0013] The technical effects achieved by this utility model are:

[0014] The utility model discloses a high-precision gear. After the gear main body is machined and formed, a heat dissipation tube made of alloy material is bent and bonded to the end face of the gear main body. Two drainage tubes are pre-embedded and installed in the transmission shaft. One port of the two drainage tubes slightly protrudes along the key of the transmission shaft. During assembly, the gear main body is sleeved on the outside of the transmission shaft until the key of the transmission shaft is embedded in the key slot. Then the hose is pulled to extend, and the two conduits are moved to insert into the key slot and are respectively plugged tightly with the two drainage tubes. A cold air channel is formed by the heat dissipation tube, the two hoses, the two conduits and the two drainage tubes. Cold air is blown along the cold air channel by an external air source, so that a temperature difference can be formed inside and outside the cold air channel to take away heat, so that the cold air channel can continuously absorb the heat on the gear main body and can continuously cool down the high-precision gear in a closed environment. At the same time, the transmission shaft and the high-precision gear are both driven in a closed environment, so as to take into account heat dissipation and reduce interference from impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the main view of a high-precision gear of the present invention;

[0016] Figure 2 It is the front view of the gear body of the utility model;

[0017] Figure 3 It is the front view of the practical heat dissipation pipe;

[0018] Figure 4 This is a practical Figure 2 The enlarged view of point A in the middle;

[0019] Figure 5 It is a bottom view of the practical sealing gasket.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Gear body; 2. Keyway; 3. Heat dissipation pipe; 4. Hose; 5. Conduit; 6. Drainage pipe; 7. Inner ring; 8. Sleeve; 9. Threaded sleeve; 10. Sealing gasket; 11. Reinforcement part. DETAILED DESCRIPTION

[0022] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0023] like Figure 1-5As shown, a high-precision gear includes a gear body 1, and a Chinese utility model with reference publication number CN220980253U is a high-precision pressure-resistant gear. The gear body 1 can be made of superalloy material, supplemented with a surface carburized layer to improve wear resistance. The gear body 1 is an annular structure with teeth on the edge. A keyway 2 is radially opened on the inner wall of the gear body 1. A heat dissipation pipe 3 is fixed to the end face of the gear body 1. The heat dissipation pipe 3 is fan-shaped and curved. Both openings of the heat dissipation pipe 3 are connected and fixed with a hose 4. The ports of the two hoses 4 away from the heat dissipation pipe 3 are connected and fixed with a conduit 5. One end of the two conduits 5 extends into the keyway 2. Two drainage pipes 6 are inserted in the middle of the gear body 1, one of which is rotatably connected to an external air source, and the ports of the two drainage pipes 6 are respectively interference fit with one end of the two conduits 5. The gear body 1 is processed and formed. Finally, the heat dissipation pipe 3 made of alloy material is bent and bonded to the end face of the gear body 1, and the two drainage pipes 6 are pre-embedded and installed in the transmission shaft. One port of the two drainage pipes 6 slightly protrudes along the key of the transmission shaft. During assembly, the gear body 1 is sleeved on the outside of the transmission shaft until the key of the transmission shaft is embedded in the key slot 2, and then the hose 4 is pulled to extend, and the two conduits 5 are moved to insert into the key slot 2 and tightly plugged with the two drainage pipes 6 respectively. The heat dissipation pipe 3, the two hoses 4, the two conduits 5 and the two drainage pipes 6 form a cold air channel. Cold air is blown along the cold air channel by an external air source, and a temperature difference can be formed inside and outside the cold air channel to take away the heat, so that the cold air channel can continuously absorb the heat on the gear body 1, and can continuously cool the high-precision gear in a closed environment. At the same time, the transmission shaft and the high-precision gear are both driven in a closed environment, taking into account both heat dissipation and reducing interference from impurities.

[0024] For the hose 4, fluorosilicone rubber material can be selected, which can withstand a certain high temperature environment, and the heat dissipation pipe 3, the conduit 5 and the drainage pipe 6 can all be made of high-temperature resistant alloy materials, and the heat dissipation pipe 3 and the gear body 1 are preferably fixed by seamless welding technology to avoid weld debris from colliding with the gear body 1.

[0025] like Figure 1 and Figure 2 As shown, an inner ring 7 is integrally installed in the middle of the gear body 1, and the inner edge of the inner ring 7 coincides with the inner edge of the keyway 2. The inner ring 7 is used to support the two conduits 5 and to strengthen the structural strength in the middle of the gear body 1, taking into account both heat dissipation and rigidity improvement.

[0026] like Figure 2 , Figure 3 and Figure 4 As shown, two sleeves 8 are installed through the outer side of the inner ring 7, and the two sleeves 8 are connected to the key slot 2. The two sleeves 8 are respectively sleeved on the outside of the two catheters 5. When the two catheters 5 are inserted into the key slot 2, the two sleeves 8 are used to guide the two catheters 5 respectively, so as to reduce the degree of skewness of the two catheters 5 and ensure the accuracy of the two catheters 5 aligning with the two drainage tubes 6.

[0027] like Figure 2 , Figure 3 and Figure 4 As shown, threaded sleeves 9 are rotatably installed on the outside of the two catheters 5, and the inner sides of the two threaded sleeves 9 are respectively threadedly connected to the outer sides of the two sleeves 8. When the two catheters 5 are respectively inserted into the two drainage tubes 6, the two threaded sleeves 9 are rotated forward and sleeved on the outside of the two threaded sleeves 9 and locked by threads, so as to stably support the two catheters 5 and enable the two catheters 5 to continue to be tightly inserted into the drainage tubes 6.

[0028] like Figure 4 and Figure 5 As shown, a sealing gasket 10 is fixed on one side of the keyway 2 close to the hose 4. The sealing gasket 10 can be made of fluorosilicone rubber. The sealing gasket 10 is penetrated by two conduits 5. The sealing gasket 10 is used to seal the gap between the key of the transmission shaft and the keyway 2, so that the key can be inserted into the keyway 2 conveniently.

[0029] like Figure 1 and Figure 3 As shown, the connection between the two hoses 4 and the conduit 5 is fixed with a reinforcement part 11, and the two reinforcement parts 11 are both tubular structures to enhance the structural strength of the connection to resist the centrifugal effect of the connection when the gear body 1 rotates, thereby reducing the occurrence of being pulled apart.

[0030] The working principle of the utility model is as follows: after the gear body 1 is processed and formed, the heat dissipation pipe 3 made of alloy material is bent and bonded to the end face of the gear body 1, and the two drainage pipes 6 are pre-embedded and installed in the transmission shaft, and one port of the two drainage pipes 6 is slightly protruded along the key of the transmission shaft. During assembly, the gear body 1 is sleeved on the outside of the transmission shaft until the key of the transmission shaft is embedded in the key slot 2, and then the hose 4 is pulled to extend, and the two conduits 5 are moved to insert into the key slot 2 and are respectively plugged with the two drainage pipes 6. A cold air channel is formed by the heat dissipation pipe 3, the two hoses 4, the two conduits 5 and the two drainage pipes 6. Cold air is blown along the cold air channel by an external air source, and a temperature difference can be formed inside and outside the cold air channel to take away heat, so that the cold air channel can continuously absorb the heat on the gear body 1, and can continuously cool down the high-precision gear in a closed environment. At the same time, the transmission shaft and the high-precision gear are both driven in a closed environment, taking into account heat dissipation and reducing interference from impurities.

[0031] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A high-precision gear, comprising a gear body (1), characterized in that: The gear body (1) is an annular structure with teeth on the edge. A keyway (2) is radially provided on the inner wall of the gear body (1). A heat dissipation pipe (3) is fixed to the end face of the gear body (1). The heat dissipation pipe (3) is fan-shaped and curved. Both openings of the heat dissipation pipe (3) are connected and fixed with a hose (4). The two ports of the hose (4) away from the heat dissipation pipe (3) are connected and fixed with a conduit (5). One end of the two conduits (5) extends into the keyway (2). Two drainage pipes (6) are inserted in the middle of the gear body (1). The two ports of the drainage pipes (6) are respectively interference-fitted with one end of the two conduits (5).

2. A high-precision gear according to claim 1, characterized in that: An inner ring (7) is integrally installed in the middle of the gear body (1), and the inner edge of the inner ring (7) coincides with the inner edge of the keyway (2).

3. A high-precision gear according to claim 2, characterized in that: Two sleeves (8) are installed through the outer side of the inner ring (7), and the two sleeves (8) are both connected to the keyway (2). The two sleeves (8) are respectively sleeved on the outside of the two conduits (5).

4. A high-precision gear according to claim 3, characterized in that: The outer sides of the two conduits (5) are both rotatably mounted with threaded sleeves (9), and the inner sides of the two threaded sleeves (9) are respectively threadedly connected to the outer sides of the two sleeves (8).

5. The high-precision gear according to claim 1, characterized in that: A sealing gasket (10) is fixed on one side of the keyway (2) close to the hose (4), and the sealing gasket (10) is penetrated by two conduits (5).

6. A high-precision gear according to claim 1, characterized in that: A reinforcement part (11) is fixed at the connection between the two hoses (4) and the conduit (5), and the two reinforcement parts (11) are both tubular structures.

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