Manual brake release device applied to Tamagawa encoder

Abstract

The utility model relates to the technical field of brakes, and discloses a manual brake release device applied to a Tamagawa encoder, which comprises a motor shaft and a base, the motor shaft is rotatably mounted on the base, brake arms are further arranged on two sides of the base, the brake arms are arranged on two sides of the circumferential direction of the motor shaft, and a driving shaft rotating along with the motor shaft is further fixedly arranged on the motor shaft. A rotating shaft is rotationally connected above the driving shaft, the rotating shaft is connected with an air exhaust module, a rotating air brush shaft is arranged on the air exhaust module, and a plurality of bristles which are communicated with the air brush shaft and are provided with air holes are arranged on the air brush shaft; when air is exhausted from the air holes of the bristles, an air flow towards the surface of the motor shaft is generated, the air flow washes the surface of the motor shaft, and due to the direct action of the air flow, dust particles and heat on the surface of the motor shaft are blown by the air flow and taken away from the surface of the motor shaft. Therefore, the effects of cleaning and reducing the surface temperature of the motor shaft are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of brakes, in particular to a manual brake release device applied to a Tamagawa encoder. Background Art

[0002] The manual brake release device of the Tamagawa encoder is an auxiliary tool designed for mechanical equipment to improve the safety and maintenance convenience of the equipment. The main function of the device is to manually release the brake state of the encoder, which is particularly important in emergency situations or when equipment maintenance is required. During the operation of industrial equipment, the encoder, as a key feedback element, usually needs to maintain its brake state to ensure accurate position control and safe operation. However, when the equipment fails or loses power, the locked state of the encoder may hinder the normal shutdown or maintenance of the equipment. At this time, the manual brake release device plays an important role. Through the manual brake release device, the operator can quickly release the lock state of the encoder, allowing the equipment to stop safely and enter maintenance mode without additional power support. The design concept of the manual brake release device revolves around simplicity and practicality. Its structure is usually simple and the operation method is very intuitive, ensuring that the operator can quickly master and use the device in an emergency. This simple design not only reduces the complexity of operation, but also reduces the possibility of misoperation, further improving the safety of equipment operation. In practical applications, manual brake release devices are widely used in various mechanical equipment, especially those industrial scenarios that require precise control and frequent maintenance. For example, in an automated production line, the continuous and stable operation of the equipment is crucial, and the rapid handling of any sudden faults depends on effective safety devices. The manual brake release device can ensure that the equipment can be safely shut down in the event of a power failure or system failure, thereby avoiding greater mechanical damage and production interruptions. In addition to the safety advantages, the manual brake release device also significantly improves the efficiency of equipment maintenance. Traditional troubleshooting methods may require complex steps and special tools, but with a manual brake release device, operators only need simple operations to release the encoder brake and quickly enter the maintenance procedure. This not only shortens maintenance time, but also reduces production losses caused by long downtime.

[0003] However, during long-term use of the manual brake release device of the existing Tamagawa encoder, dust particles will be embedded in the contact surface of the brake and the brake hub, increasing friction. This not only makes the manual brake release operation more difficult, but also causes the operation to require more effort, thereby reducing the brake release efficiency. In addition, large dust particles will cause the wear of the brake and hub surfaces to increase. This wear will destroy the smoothness of the contact surface, further increase the friction, and may cause surface irregularities, making the operation of the brake release device unstable and unreliable. In some occasions where manual brake release is required many times per unit time, such as emergency shutdown of chemical plants, maintenance of power equipment, industrial production line conversion, and fire drills, each manual brake release operation will generate a certain amount of heat, especially when it is frequently operated, the heat will gradually accumulate. The increase in temperature of the brake and hub surface will change the physical properties of the material, reducing its hardness and strength. The brake and hub may undergo thermal expansion and deformation in a high temperature environment. This will cause the contact surface to no longer be flat or matched, thereby increasing friction and wear and reducing the brake release efficiency. At the same time, repeated thermal cycles will cause thermal fatigue of the material and increase the generation of surface microcracks. These cracks will gradually expand and may eventually lead to component failure or breakage, significantly shortening the service life of the device. High temperatures may also cause the lubricant to degrade or evaporate, losing its lubricating function. This will increase friction between mechanical parts, leading to more wear and energy consumption, reducing brake release efficiency and device life. Utility Model Content

[0004] (I) Technical problems solved: In view of the deficiencies in the prior art, the utility model provides a manual brake release device applied to the Tamagawa encoder, which has the advantages of reducing dust on the brake hub and the brake surface and improving the heat dissipation efficiency of the brake hub and the brake surface. It solves the problem that dust particles in the existing manual brake release device will be embedded in the contact surface of the brake and the brake hub after long-term use, increasing friction and affecting its braking and release efficiency, and in some occasions where manual brake release needs to be repeated multiple times per unit time, each manual brake release operation will generate a certain amount of heat. Especially when the operation is frequent, the heat will gradually accumulate, causing the hardness and strength of the brake and the hub to reduce, affecting the release efficiency.

[0005] (ii) Technical solution: In order to achieve the above-mentioned purpose of reducing dust on the brake hub and the brake surface and improving the heat dissipation efficiency of the brake hub and the brake surface, the utility model provides the following technical solution: a manual brake release device applied to the Tamagawa encoder, comprising a motor shaft and a base, the motor shaft is rotatably mounted on the base, brake arms are also arranged on both sides of the base, the brake arms are arranged on both sides of the circumferential direction of the motor shaft, a driving shaft is also fixedly arranged on the motor shaft and rotates with it, a rotating shaft is rotatably connected above the driving shaft, the rotating shaft is connected to an exhaust module, a rotating air brush shaft is arranged on the exhaust module, a plurality of bristles connected to the air brush shaft and having air holes are arranged on the air brush shaft, the bristles are tangent to the motor shaft, and the exhaust module fills gas into the air brush shaft as the rotating shaft rotates.

[0006] Preferably, the exhaust module includes fan blades and a shell, the fan blades are coaxially rotatably fixedly connected to the rotating shaft, a cylindrical cavity is arranged inside the shell, the cavity is coaxially arranged with the fan blades, and the fan blades are rotatably connected to the shell, an air inlet is arranged on the cavity, the air brush shaft is fixedly connected to the axis of the fan blades, and an inflation hole connected to the interior of the air brush shaft is opened on the surface of the air brush shaft, and the inflation hole is located in the cavity.

[0007] Preferably, a support frame is provided at the bottom of the shell, and the bottom of the support frame is fixedly connected to the base.

[0008] Preferably, the air brush shaft and the housing are connected in a sealed rotational manner.

[0009] Preferably, the bristles are made of flexible material.

[0010] Preferably, a brake module is provided below the brake arm, and the brake module connects the brake arms on both sides of the base and controls the braking state thereof.

[0011] Preferably, the rotating shaft and the driving shaft are meshed with teeth.

[0012] Preferably, the fan blade diameter is smaller than the cavity diameter.

[0013] Preferably, a fixed bracket is provided on the base, and the fixed bracket is rotatably connected to the driving shaft and the rotating shaft.

[0014] (III) Beneficial effects: Compared with the prior art, the utility model provides a manual brake release device applied to the Tamagawa encoder, which has the following beneficial effects:

[0015] 1. The manual brake release device applied to the Tamagawa encoder is used in conjunction with a drive shaft structure, a rotating shaft structure, an air brush shaft structure, a bristle structure, a shell structure, and a fan blade structure. When the gas is discharged from the air holes of the bristles, it will generate an airflow in the direction of the motor shaft surface. This airflow will flush the surface of the motor shaft. Due to the direct effect of this airflow, dust particles on the surface of the motor shaft will be blown away from the surface of the motor shaft by this airflow, thereby playing a cleaning role. At the same time, since the brake arm will generate heat on the surface of the brake arm and the motor shaft during the rotation and release process, the surface temperature of the motor shaft will rise. Frequent braking and release will make this temperature change more obvious. When the gas flushes the surface of the motor shaft, it will also take away some of the heat on the motor shaft. This is because the convection of the gas can take away the heat from the surface of the motor shaft and diffuse it into the surrounding environment. When the surface temperature of the motor shaft decreases, the surface temperature of the brake arm will also decrease accordingly, thereby improving the service life of the device and the braking efficiency.

[0016] 2. The manual brake release device applied to the Tamagawa encoder uses a driving shaft structure, a rotating shaft structure, an air brush shaft structure, a bristle structure, a fan blade structure, an air inlet structure, and an air filling hole structure. When the air brush shaft drives the bristles to rotate, the bristles can not only clean the dust on the surface of the motor shaft, but also enhance the cleaning and cooling capabilities of the gas ejected from the bristles on the surface of the motor shaft when the bristles rotate. When the bristles rotate, they contact the surface of the motor shaft with a higher frequency and a stronger force. This dynamic contact can not only clean the dust and particles attached to the surface of the motor shaft more deeply, but also effectively remove some stains and dirt that are difficult to handle by static cleaning methods. At the same time, when the bristles rotate, since the bristles themselves have a certain softness and elasticity, they can more effectively guide the gas to be ejected from the pores and increase the speed and concentration of the airflow. High-speed, concentrated airflow can impact the motor shaft surface more directly, providing a stronger scouring effect, thereby more effectively blowing off dust particles on the motor shaft surface. In addition, the rotation of the bristles will increase the complexity and turbulence of the gas flow, which helps to increase the contact area and contact time between the gas and the motor shaft surface. Longer contact time and larger contact area mean that the gas can take away more heat, thereby more effectively reducing the temperature of the motor shaft surface. In addition, turbulence can also help the gas better penetrate the laminar boundary layer on the motor shaft surface, further improving the efficiency of convective heat dissipation. At the same time, due to the simple structure and the absence of an additional drive structure, efficient cleaning and cooling of the motor shaft surface can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the manual brake release device applied to the Tamagawa encoder in the utility model;

[0018] Figure 2It is a structural front view of the manual brake release device applied to the Tamagawa encoder in the utility model;

[0019] Figure 3 It is a structural side view of the manual brake release device applied to the Tamagawa encoder in the utility model;

[0020] Figure 4 It is a structural top view of the manual brake release device applied to the Tamagawa encoder in the utility model;

[0021] Figure 5 It is a structural cross-sectional view of the manual brake release device applied to the Tamagawa encoder in the utility model;

[0022] Figure 6 This is a cross-sectional view of the air brush shaft structure of the manual brake release device used for the Tamagawa encoder in the utility model;

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the air brush shaft of the manual brake release device applied to the Tamagawa encoder in the utility model.

[0024] In the figure: 1-motor shaft, 2-base, 3-brake arm, 4-drive shaft, 5-rotating shaft, 61-air brush shaft, 62-bristles, 63-inflating hole, 71-shell, 72-cavity, 73-air inlet, 74-fan blades, 75-support frame, 8-brake module, 9-fixed bracket. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6, a manual brake release device applied to the Tamagawa encoder includes a motor shaft 1 and a base 2. The motor shaft 1 is rotatably mounted on the base 2. Braking arms 3 are also arranged on both sides of the base 2. The brake arms 3 are arranged on both sides of the motor shaft 1 in the circumferential direction. A driving shaft 4 that rotates with it is also fixedly arranged on the motor shaft 1. A rotating shaft 5 is rotatably connected above the driving shaft 4. The driving shaft 4 is arranged on the motor shaft 1 to transmit the rotational motion of the motor to other components. The existence of the driving shaft 4 ensures that the rotation of the motor can effectively drive the rotating shaft 5 and other auxiliary devices to operate. Through this design, the power of the motor can be used to drive the operation of the entire device. The connection between the rotating shaft 5 and the driving shaft 4 can achieve efficient power transmission through gear meshing, ensuring that the rotating shaft 5 can rotate synchronously, thereby driving the operation of other components such as the exhaust module and the air brush shaft 61. The rotating shaft 5 and the driving shaft 4 are meshed with teeth, and the gear meshing design can achieve stable, reliable and efficient power transmission. Gear meshing can ensure the synchronous rotation between the rotating shaft 5 and the driving shaft 4, reducing power loss and sliding friction. At the same time, the gear transmission can achieve different transmission ratios, adjust the speed and torque according to the needs, so that the system can adapt to various working conditions more flexibly. The rotating shaft 5 is connected to the exhaust module, and a rotating air brush shaft 61 is provided on the exhaust module. The air brush shaft 61 is provided with a plurality of bristles 62 connected with it and having air holes. The bristles 62 on the air brush shaft 61 are provided with air holes to achieve the dual functions of cleaning and cooling. When the gas is ejected from the air holes, the dust and dirt on the surface of the motor shaft 1 can be effectively removed. At the same time, the ejection of gas can also take away the heat on the surface of the motor shaft 1, which plays a cooling role. The presence of the bristles 62 can enhance the contact effect between the gas and the surface of the motor shaft 1, and improve the cleaning and cooling efficiency. The bristles 62 are made of flexible materials, and the bristles 62 are made of flexible materials to avoid damaging the motor shaft 1 when cleaning the surface of the motor shaft 1. The flexible material can gently clean the surface of the motor shaft 1 when contacting it, avoiding scratching or wearing the surface of the motor shaft 1. The flexible material is made of polyurethane, silicone or rubber. These materials have good elasticity and wear resistance, and can be used for a long time without being easily damaged. The bristles 62 are tangent to the motor shaft 1. The design of the bristles 62 being tangent to the motor shaft 1 is to ensure that the bristles 62 can effectively contact and clean the surface of the motor shaft 1. The tangential contact method can maximize the use of the flexibility of the bristles 62, maintain a constant contact pressure during the cleaning process, and improve the cleaning efficiency. The tangential design can also ensure that the airflow ejected from the pores directly acts on the surface of the motor shaft 1, thereby improving the cleaning and cooling effects. The exhaust module rotates with the rotating shaft 5 to fill gas into the air brush shaft 61. The exhaust module rotates with the rotating shaft 5 in order to use the power of the rotating shaft 5 to drive the exhaust module to operate. This design can simplify the system structure, without the need for an additional drive structure, and the exhaust module is directly driven by the rotation of the rotating shaft 5. The exhaust module fills gas into the air brush shaft 61, which can ensure that there is continuous gas flow in the air brush shaft 61, thereby achieving effective cleaning and cooling effects.The air holes on the air brush shaft 61 allow air to be ejected from the bristles 62, further enhancing the cleaning and cooling functions.

[0027] Please refer to Figure 1. Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The air extraction module includes a fan blade 74 and a housing 71. The fan blade 74 is coaxially rotated and fixedly connected to the rotating shaft 5. A cylindrical cavity 72 is arranged inside the housing 71. The cylindrical cavity 72 is designed to provide a space for accommodating the fan blade 74 and allowing it to rotate. The cylindrical cavity 72 can ensure the uniform distribution of the airflow and form a stable airflow path when the fan blade 74 rotates. At the same time, the cylindrical cavity 72 can improve the efficiency and fluidity of the airflow, so that the entire system can perform air extraction and cleaning operations more effectively. The cavity 72 is coaxially arranged with the fan blade 74, and the fan blade 74 is rotatably connected to the housing 71. The diameter of the fan blade 74 is smaller than the diameter of the cavity 72. The diameter of the fan blade 74 is smaller than the diameter of the cavity 72 so that a stable air flow channel can be formed in the cavity 72 when the fan blade 74 rotates. This design can ensure that the fan blade 74 will not rub against the inner wall of the cavity 72 when rotating, and at the same time leave enough space for air flow, thereby forming an effective air extraction and airflow delivery effect. This design can also reduce air flow resistance and improve the working efficiency of the system. An air inlet 73 is provided on the cavity 72. The purpose of providing the air inlet 73 on the cavity is to ensure that air can smoothly enter the cavity 72. When the fan blade 74 rotates, a negative pressure will be generated in the cavity 72, and the air inlet 73 allows outside air to enter the cavity 72, thereby maintaining a continuous airflow cycle. This design can ensure that the air brush shaft 61 can continuously obtain gas supply, thereby achieving a stable cleaning and cooling effect. The air brush shaft 61 is fixedly connected to the axis of the fan blade 74, and an air filling hole 63 connected to the inside of the air brush shaft 61 is provided on the surface of the air brush shaft 61, and the air filling hole 63 is located in the cavity 72. The air filling hole 63 connected to the inside is provided on the surface of the air brush shaft 61 so that the gas can directly enter the air brush shaft 61 from the cavity 72 and be ejected through the air holes on the bristles 62. This design can ensure that the gas pressure inside the air brush shaft 61 is consistent with the gas pressure in the cavity 72, so that the gas can be continuously ejected for cleaning and cooling operations when the air brush shaft 61 rotates. The air filling hole 63 is located in the cavity 72 to ensure the continuity and stability of the gas flow. A sealed rotation connection is adopted between the air brush shaft 61 and the housing 71. The purpose of adopting a sealed rotation connection between the air brush shaft 61 and the housing 71 is to prevent gas leakage and ensure that the gas can be effectively ejected from the air holes of the air brush shaft 61 for cleaning and cooling operations. The sealed connection can ensure the stability and efficiency of the gas flow, and at the same time prevent external impurities from entering the air brush shaft 61, so as to maintain the normal operation of the system.

[0028] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A brake module 8 is provided below the brake arm 3, and a manual release button is provided on the brake module 8. The brake module 8 connects the brake arms 3 on both sides of the base 2 and controls the braking state thereof. A support frame 75 is provided at the bottom of the housing 71, and the bottom of the support frame 75 is fixedly connected to the base 2. A fixed bracket 9 is provided on the base 2, and the fixed bracket 9 is rotatably connected to the drive shaft 4 and the rotating shaft 5.

[0029] Working principle: When the device is in use, during the rotation of the motor shaft 1, the driving shaft 4 and the rotating shaft 5 will be driven to rotate at the same time. When the rotating shaft 5 rotates, the fan blades 74 and the air brush shaft 61 will be driven to rotate. When the fan blades 74 rotate, negative pressure will be generated in the cavity 72, so that the surrounding air will enter the cavity 72 from the air inlet hole 73, and the gas pressure in the cavity 72 will gradually increase. Since the filling hole 63 of the air brush shaft 61 is also located in the cavity 72, and the air brush shaft 61 is connected to the bristles 62, and the pores on the bristles 62 are connected to the external links, the pressure in the air brush shaft 61 is less than the pressure in the cavity 72. At this time, air will be filled into the air brush shaft 61 and discharged through the pores on the bristles 62. When the gas is discharged from the pores of the bristles 62, the gas will flush the surface of the motor shaft 1, and the bristles 62 will clean the surface of the motor shaft 1.

[0030] In the above process, when the gas is discharged from the air holes of the bristles 62, it will generate an airflow toward the surface of the motor shaft 1. This airflow will flush the surface of the motor shaft 1. Due to the direct effect of this airflow, the dust particles on the surface of the motor shaft 1 will be blown away from the surface of the motor shaft 1 by this airflow, thereby playing a cleaning role. At the same time, since the brake arm 3 will generate heat on the surface of the brake arm 3 and the motor shaft 1 during the rotation and release process, the surface temperature of the motor shaft 1 will rise. Frequent braking and release will make this temperature change more obvious. When the gas flushes the surface of the motor shaft 1, it will also take away some of the heat on the motor shaft 1. This is because the convection of the gas can take away the heat from the surface of the motor shaft 1 and diffuse it into the surrounding environment. When the surface temperature of the motor shaft 1 decreases, the surface temperature of the brake arm 3 will also decrease accordingly, thereby improving the service life of the device and the braking efficiency.

[0031] And when the air brush shaft 61 drives the bristles 62 to rotate, not only can the bristles 62 clean the dust on the surface of the motor shaft 1, but also when the bristles 62 rotate, the cleaning ability and cooling ability of the gas ejected from the bristles 62 on the surface of the motor shaft 1 will be enhanced. When the bristles 62 rotate, they will contact the surface of the motor shaft 1 with a higher frequency and a stronger force. This dynamic contact can not only clean the dust and particles attached to the surface of the motor shaft 1 more deeply, but also effectively remove some stains and dirt that are difficult to handle by static cleaning means. At the same time, when the bristles 62 rotate, since the bristles 62 themselves have a certain softness and elasticity, it can more effectively guide the gas to be ejected from the pores and increase the speed and concentration of the airflow. The high-speed, concentrated airflow can more directly impact the surface of the motor shaft 1, provide a stronger flushing effect, and thus more effectively blow off the dust particles on the surface of the motor shaft 1. Moreover, when the bristles 62 rotate, the complexity and turbulence of the gas flow will increase, which helps to increase the contact area and contact time between the gas and the surface of the motor shaft 1. Longer contact time and larger contact area mean that the gas can take away more heat, thereby more effectively reducing the temperature of the surface of the motor shaft 1. In addition, turbulence can also help the gas better penetrate the laminar boundary layer on the surface of the motor shaft 1, further improving the efficiency of convective heat dissipation. At the same time, due to the simple structure and the absence of an additional drive structure, the surface of the motor shaft 1 can be efficiently cleaned and cooled.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manual brake release device for a Tamagawa encoder, comprising a motor shaft (1) and a base (2), wherein the motor shaft (1) is rotatably mounted on the base (2), and brake arms (3) are provided on both sides of the base (2), and the brake arms (3) are provided on both sides of the motor shaft (1) in a circumferential direction, characterized in that: The motor shaft (1) is also fixedly provided with a driving shaft (4) that rotates with it, a rotating shaft (5) is rotatably connected to the top of the driving shaft (4), the rotating shaft (5) is connected to an exhaust module, a rotating air brush shaft (61) is provided on the exhaust module, a plurality of bristles (62) that are connected to the air brush shaft (61) and have air holes are provided on the air brush shaft (61), the bristles (62) are tangent to the motor shaft (1), and the exhaust module fills gas into the air brush shaft (61) as the rotating shaft (5) rotates.

2. The manual brake release device applied to Tamagawa encoder according to claim 1 is characterized in that: The air extraction module comprises a fan blade (74) and a shell (71); the fan blade (74) is coaxially rotatably fixedly connected to the rotating shaft (5); a cylindrical cavity (72) is arranged inside the shell (71); the cavity (72) and the fan blade (74) are coaxially arranged, and the fan blade (74) and the shell (71) are rotatably connected; an air inlet hole (73) is arranged on the cavity (72); the air brush shaft (61) is fixedly connected to the shaft of the fan blade (74); an air filling hole (63) communicating with the interior of the air brush shaft (61) is opened on the surface of the air brush shaft (61); and the air filling hole (63) is located in the cavity (72).

3. The manual brake release device applied to Tamagawa encoder according to claim 2 is characterized in that: A support frame (75) is provided at the bottom of the housing (71), and the bottom of the support frame (75) is fixedly connected to the base (2).

4. The manual brake release device applied to Tamagawa encoder according to claim 2 is characterized in that: The air brush shaft (61) and the housing (71) are connected in a sealed rotational manner.

5. The manual brake release device applied to Tamagawa encoder according to claim 1, characterized in that: The bristles (62) are made of flexible material.

6. The manual brake release device applied to Tamagawa encoder according to claim 1, characterized in that: A brake module (8) is provided below the brake arm (3), and the brake module (8) connects the brake arms (3) on both sides of the base (2) and controls their braking state.

7. The manual brake release device for Tamagawa encoder according to claim 2 is characterized in that: The rotating shaft (5) and the driving shaft (4) are meshed with teeth.

8. The manual brake release device applied to Tamagawa encoder according to claim 2 is characterized in that: The diameter of the fan blade (74) is smaller than the diameter of the cavity (72).

9. The manual brake release device applied to Tamagawa encoder according to claim 1, characterized in that: A fixed bracket (9) is provided on the base (2), and the fixed bracket (9) is rotatably connected to the driving shaft (4) and the rotating shaft (5).

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