A side-mounted electric wind vane electromagnetic brake device

Abstract

The invention discloses a side-mounted electric wind vane electromagnetic brake device, including an electric release mechanism, the electric release mechanism includes an end cover with an iron core, an electromagnetic induction device, an armature, a friction disk and a rotating shaft, an armature is arranged above the end cover with an iron core, the electromagnetic induction device is installed in the end cover with an iron core, a friction disk is arranged above the armature, and the end cover with an iron core, the armature and the friction disk are all sleeved on the rotating shaft. The advantages of the invention are: greatly shortening the axial space, which is conducive to improving the strength of the rotating shaft; economical cost, convenient and reliable operation; simplified structure, saving axial space; greatly reducing the difficulty of processing and assembly debugging.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic brakes, and in particular to a side-mounted electric wind vane electromagnetic brake device. Background Art

[0002] In the construction industry, tower crane motors are required to be equipped with electromagnetic brakes to brake the motors. The brakes are also required to have electric release and manual release functions to ensure the safety of the tower cranes. At present, the structure is widely used, which has the following main disadvantages: many parts and complex structure: it is necessary to equip a separate electromagnetic brake for electromagnetic braking, an independent built-in unlocking device to realize the release function, and an independent blower or fan to realize the heat dissipation function; the motor is too long: the brake and the unlocking device are arranged behind the motor axis, the motor shaft is too long, the strength and radial runout are large, especially the motor required to be equipped with an encoder, the shaft is longer; the brake is difficult to debug and the reliability is poor: the brake friction disc mostly adopts double-sided friction braking. If the air gap is too small, it is easy to cause the friction disc to rub falsely and make abnormal noises. If the air gap is too large, the minimum pull-in voltage of the brake increases, and the reliability is poor. Therefore, the assembly requirements, the size and shape and position tolerances of related components are very high. If the error is slightly larger, it is very difficult to adjust; the production cost is high and the maintenance is inconvenient: due to the large number of functional components and the complex structure, it is not convenient to assemble and adjust, the processing and manufacturing cost is high, and different components may come from different suppliers. Once a fault occurs, it is difficult to coordinate and deal with it.

[0003] Therefore, it is necessary to design a side-mounted electric wind vane electromagnetic brake device, the purpose of which is to solve the defects of the prior art that the brake is axially arranged and occupies space, has a complex structure, and has poor reliability. Summary of the invention

[0004] The invention aims to solve the problems in the prior art that the axial arrangement of the brake occupies space, has a complex structure and poor reliability.

[0005] The present invention is achieved through the following technical solutions:

[0006] A side-mounted electric wind vane electromagnetic brake device includes an electric release mechanism, which includes an end cover with an iron core, an electromagnetic induction device, an armature, a friction disk and a rotating shaft. An armature is arranged above the end cover with an iron core, and the electromagnetic induction device is installed in the end cover with an iron core. A friction disk is arranged above the armature. The end cover with an iron core, the armature and the friction disk are all sleeved on the rotating shaft.

[0007] The prior art requires that an electromagnetic brake be installed on the tower crane motor to brake the motor, and the brake is also required to have electric release and manual release functions. The currently used structure has many parts and is complex in structure: a separate electromagnetic brake is required for electromagnetic braking, an independent built-in unlocking device is required to realize the release function, and an independent blower or fan is required to realize the heat dissipation function, etc.; the motor is too long: the brake and the unlocking device are arranged at the rear of the motor axis, the motor shaft is too long, and the strength and radial runout are large; the brake is difficult to debug and has poor reliability: the brake friction disc mostly adopts double-sided friction braking. If the air gap is too small, it is easy to cause false friction and abnormal noise of the friction disc. If the air gap is too large, the minimum pull-in voltage of the brake increases, and the reliability is poor; the production cost is high and maintenance is inconvenient.

[0008] The present invention realizes the functions of electric release and manual release by cooperating with each other among the core end cover, electromagnetic induction device, armature, friction disk and rotating shaft, and is equipped with an independent side-mounted unlocking device. It has high reliability, convenient maintenance, simple functional components, convenient assembly and adjustment, and low processing and manufacturing cost.

[0009] Furthermore, it also includes a manual release mechanism, which includes a release handle, a release bracket and a release pin, the release handle is connected to the release bracket, the release bracket is connected to the end cover with the iron core through the release pin, and the hexagon socket screw is slidably connected to the armature;

[0010] The release handle operating mechanism is a lever mechanism that is manually operated to realize the release function of the brake when the power is off, and is composed of a release handle, a release bracket, and a release pin shaft;

[0011] The release handle is connected to the release bracket by a thread, and the release bracket is connected to the core end cover by a release pin and can rotate around the release pin. The release bracket is connected to the linkage pin by a pin hole and can rotate. When the release handle is pulled upward, the release bracket rotates around the release pin, driving the linkage pin and the hexagon socket screw to move downward, and the bolt head of the hexagon socket screw contacts the upper end surface of the armature, and then drives the armature to move downward, so that the armature is separated from the friction disk with fan placed on it.

[0012] Furthermore, the electromagnetic induction device includes an excitation coil and a push-pull electromagnet, the excitation coil, a brake spring and a cylindrical pin are installed between the armature and the end cover with an iron core, the excitation coil is arranged on the outside of the rotating shaft, the brake spring and the cylindrical pin are arranged on the outside of the excitation coil, and the end cover with an iron core is connected to the motor base;

[0013] The iron core end cover is connected to the motor base and is the main supporting component of the electromagnetic brake. The iron core end cover is made of magnetic conductive material and contains an excitation coil. The excitation part of the electromagnetic brake is integrated with the motor end cover, which simplifies the structure, reduces costs, and shortens the length of the motor.

[0014] The armature is made of magnetic conductive material, and forms a closed magnetic circuit with the magnetic conductive surface of the end cover with iron core. Under the action of the magnetic force generated by the power of the excitation coil, a magnetic attraction effect is generated; a brake spring is installed between the end cover with iron core and the armature. When the power of the excitation coil is cut off, the armature is pushed toward the friction disk to play a friction braking role.

[0015] Furthermore, a fan is installed above the friction disc, and the fan is used for heat dissipation; an adjusting nut is arranged above the friction disc, and the adjusting nut limits the friction disc, and the adjusting nut sleeve can be used to adjust the brake air gap;

[0016] The upper part of the rotating shaft is connected with an encoder shaft, and the adjusting nut is sleeved on the encoder shaft;

[0017] The friction material is bonded to the fan, replacing an independent fan to provide cooling air volume, and has a simple and economical structure; under the pressure of the brake spring, the armature and the friction disc generate positive pressure and friction to form a friction pair, which plays a braking role; the inner hole of the friction disc with the fan cooperates with the rotating shaft, and the torque is transmitted by a key connection; an adjusting nut is installed above the friction disc to limit it, and the brake air gap can be adjusted by adjusting the position of the adjusting nut.

[0018] Furthermore, a locking mechanism is provided on the end cover with the iron core, and the locking mechanism includes a locking bracket and a locking pin; the locking bracket is connected to the end cover with the iron core through the locking pin, and the locking bracket can rotate around the locking pin;

[0019] A buckle is provided on the locking bracket, and a lug is provided on the edge of the armature, and the buckle and the lug cooperate to be clamped;

[0020] When the buckle of the locking bracket is in contact with the armature ear, the buckle presses the armature ear from above, the armature cannot move upward, the armature friction surface and the friction disk are in a separated state, and the rotating shaft can rotate freely, thereby realizing the release function of the brake; when the buckle of the locking bracket is separated from the armature ear, the armature moves upward under the pressure of the brake spring, and is pressed against the friction disk above, generating positive pressure and friction force to form a friction pair, thereby playing a braking role.

[0021] Furthermore, a T-slot is provided on the locking bracket, the T-slot is connected to the electromagnet core shaft of the push-pull electromagnet, a limit nut is provided at the upper end of the push-pull electromagnet, and the lower end surface of the limit nut is a limit surface for the switch bracket to rotate downward;

[0022] When the push-pull electromagnet is powered on, the electromagnet core shaft moves upward under the action of magnetic force and drives the locking bracket to swing upward; when the push-pull electromagnet is powered off, the upward pulling magnetic force disappears and the locking bracket swings downward under the action of gravity.

[0023] Furthermore, an auxiliary compression spring and a micro switch contact piece are provided on the locking bracket, the auxiliary compression spring is provided above the micro switch contact piece, and the micro switch contact piece moves up and down with the locking bracket;

[0024] The auxiliary tension spring is arranged on the release bracket to generate pressure to assist the release handle mechanism to move downward, thereby improving the reliability of the action. A limit nut is installed on the upper end of the electromagnet core shaft, and the lower end surface of the limit nut is the limit surface for the downward movement of the switch bracket.

[0025] Furthermore, the push-pull electromagnet is fixed on the electromagnet mounting bracket, a micro switch is also fixed on the electromagnet mounting bracket, and the electromagnet mounting bracket is fixed on the end cover with the iron core by screws;

[0026] The push-pull electromagnet and micro switch are fixed on the electromagnet mounting bracket, and then fixed to the core end cover by screws. It is also made of sheet metal, with small holes on it for threading and fixing cables;

[0027] The locking bracket is also equipped with a micro switch contact piece, which moves up and down with the locking bracket, thereby making contact and separating with the micro switch button above it. The micro switch transmits power on and off signals to determine the opening and closing status of the brake. The micro switch contact piece can be adjusted up and down before installation and positioning to ensure the relative position with the micro switch is accurate. After the position is determined, it is fixed with screws, and the buckles on the upper and lower parts of the contact piece are bent to strictly maintain the fixed position to avoid displacement and failure after long-term collision.

[0028] Furthermore, an auxiliary tension spring is provided on the release bracket, and the auxiliary tension spring is used to assist the release handle mechanism to move downward;

[0029] The release bracket is connected to the linkage pin shaft through the pin hole, and the linkage pin shaft is connected to the hexagon socket screw through the thread, and the hexagon socket screw passes through the hole on the armature and can slide up and down in the hole;

[0030] The hexagon socket screw slides up and down in the hole, and the screwing length of the thread can be adjusted, and the distance between the end face of the nut and the end face of the armature can be adjusted.

[0031] Furthermore, the encoder shaft passes through the hole on the encoder connecting plate and is connected to the encoder, one end of the encoder connecting plate is connected to the side with the core end cover, and the other end is used to connect the encoder;

[0032] The encoder shaft and the encoder connecting plate are used to install the encoder, and provide an encoder installation interface for users who need an encoder; the locking bracket and the electromagnet mounting bracket are both made of sheet metal, and the economic cost is low.

[0033] Electric release process:

[0034] a. The brake is in the braking state. First, the brake excitation coil is energized, and the armature moves downward under the action of magnetic pulling force;

[0035] b. After the armature contacts the upper end surface of the core end cover, power is supplied to the push-pull electromagnet, and the core shaft of the push-pull electromagnet drives the locking bracket to swing upward, and the buckle of the locking bracket moves closer to the armature lever;

[0036] c. The buckle rotates to the position just above the armature latch, and there is a gap between the two.

[0037] d. At this time, the brake excitation coil is powered off, the armature loses its downward magnetic pulling force, and moves upward under the action of the brake spring. The armature latch presses the locking bracket buckle. At this time, the push-pull electromagnet is powered off again to complete the release operation and keep the armature in the locked position.

[0038] Electric braking process:

[0039] a. The brake is in the released state. First, energize the brake excitation coil. The armature moves downward under the action of magnetic pulling force. After the armature contacts the end cover with the iron core, the pressure between the buckle and the armature latch is eliminated, and a gap is generated;

[0040] b. The locking bracket automatically rotates downward under the action of its own gravity and the auxiliary spring, and the buckle leaves the armature ear;

[0041] c. At this time, the brake excitation coil is powered off again. The armature moves upward rapidly under the pressure of the brake spring, and presses against the friction disk with the fan to form a friction pair, generating braking friction force, preventing the motor rotor from rotating, and completing the electromagnetic braking operation.

[0042] Manual release process:

[0043] A. When the brake is in the braking state, manually lift the release handle upwards to pull the armature downwards through the lever mechanism composed of the release bracket, pin shaft, hexagon socket screw, armature lever, etc.

[0044] B. After the armature contacts the upper end surface of the core end cover, manually lift the handle of the locking bracket upwards to make the buckle of the locking bracket close to the armature catch. During this process, keep the release handle lifted upwards;

[0045] C. The buckle rotates to the top of the armature, and there is a small gap between the two (about 0.2mm);

[0046] D. At this time, release the release handle again, the armature loses the downward pulling force, and under the upward elastic force of the brake spring, the armature latch moves upward and presses the locking bracket buckle to lock the armature position, and finally release the locking bracket handle to complete the manual release operation.

[0047] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0048] 1. The present invention is a side-mounted electric wind vane electromagnetic brake device, which realizes the change of the unlocking device from the traditional axial arrangement to the outer circle lateral arrangement through the cooperation of the core end cover, the electromagnetic induction device, the armature, the friction plate and the rotating shaft, thereby greatly shortening the axial space and being beneficial to improving the strength of the rotating shaft.

[0049] 2. The present invention provides a side-mounted electric wind vane electromagnetic brake device. The side-mounted electric wind vane device is mainly composed of simple components such as a handle, a bracket, a pin shaft, a screw, a spring, an electromagnet, etc., which is cost-effective and easy and reliable to operate.

[0050] 3. The invention provides a side-mounted electric wind vane electromagnetic brake device with an iron core end cover, which combines the end cover and the excitation core into one, thereby simplifying the structure and saving axial space.

[0051] 4. The present invention provides a side-mounted electric wind vane electromagnetic brake device, in which the friction disc combines the fan and the friction disc into one, further simplifying the structure and saving axial space.

[0052] 5. The invention provides a side-mounted electric wind vane electromagnetic brake device, which uses one side of the armature as the magnetic attraction surface and the other side as the friction surface, eliminating the need for a separate brake disc, thereby further simplifying the structure and saving axial space.

[0053] 6. The present invention provides a side-mounted electric wind vane electromagnetic brake device, which adopts single-sided friction braking (friction pair of friction disc and armature). When the brake is in the released state, the friction surface can be completely disengaged, avoiding false friction, abnormal noise, jamming and other phenomena, greatly reducing the difficulty of processing, assembly and debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0055] Figure 1 It is the front view of the present invention.

[0056] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0057] Figure 3 It is a cross-sectional view of the present invention.

[0058] 1- core end cover, 2- auxiliary tension spring, 3- release handle, 4- release bracket, 5- linkage pin, 6- release pin, 7- hexagon socket screw, 8- adjusting nut, 9- encoder shaft, 10- encoding connecting plate, 11- friction disc, 12- armature, 13- O-ring, 14- locking bracket, 15- locking pin, 16- push-pull electromagnet, 17- electromagnet core shaft, 18- auxiliary compression spring, 19- electromagnet mounting bracket, 20- micro switch, 21- micro switch contact piece, 22- brake spring, 23- excitation coil, 24- rotating shaft, 25- cylindrical pin, 26- brake air gap, 27- bearing. DETAILED DESCRIPTION

[0059] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0060] Example 1

[0061] like Figure 1-3 As shown, the present invention is a side-mounted electric wind vane electromagnetic brake device, including an electric release mechanism, the electric release mechanism includes an end cover 1 with an iron core, an electromagnetic induction device, an armature 12, a friction disk 11 and a rotating shaft 24, the armature 12 is arranged above the end cover 1 with the iron core, the electromagnetic induction device is installed in the end cover 1 with the iron core, the friction disk 11 is arranged above the armature 12, and the end cover 1 with the iron core, the armature 12 and the friction disk 11 are all sleeved on the rotating shaft 24.

[0062] Example 2

[0063] like Figure 1-3 As shown, this embodiment is based on embodiment 1, and further includes a manual release mechanism, which includes a release handle 3, a release bracket 4 and a release pin 6, wherein the release handle 3 is connected to the release bracket 4, and the release bracket 4 is connected to the core end cover 1 through the release pin 6, and the release pin 6 is slidably connected to the armature 12; the release handle 3 operating mechanism is a lever mechanism that realizes the release function of the brake by manual operation when the power is off, and is composed of the release handle 3, the release bracket 4 and the release pin 6;

[0064] The release handle 3 is connected to the release bracket 4 through a thread, and the release bracket 4 is connected to the core end cover 1 through a release pin 6 and can rotate around the release pin 6. The release bracket 4 is connected to the linkage pin 5 through a pin hole and can rotate.

[0065] The release bracket 4 is provided with an auxiliary tension spring 2, which is used to assist the release handle 3 mechanism to move downward; the release bracket 4 is connected to the linkage pin 5 through a pin hole, and the linkage pin 5 is connected to the hexagon socket screw 7 through a thread, and the hexagon socket screw 7 passes through the hole on the armature 12 and can slide up and down in the hole;

[0066] The hexagon socket screw 7 slides up and down in the hole to adjust the thread engagement length and the distance between the end face of the nut and the end face of the armature 12.

[0067] Example 3

[0068] like Figure 1-3 As shown, this embodiment is based on embodiments 1 and 2, and further includes a manual release mechanism, which includes a release handle 3, a release bracket 4 and a release pin 6. The release handle 3 is connected to the release bracket 4, and the release bracket 4 is connected to the core end cover 1 through the release pin 6. The release pin 6 is slidably connected to the armature 12; the release handle 3 operating mechanism is a lever mechanism that realizes the release function of the brake by manual operation when the power is off, and is composed of the release handle 3, the release bracket 4, and the release pin 6;

[0069] The release handle 3 is connected to the release bracket 4 through a thread, and the release bracket 4 is connected to the core end cover 1 through a release pin 6 and can rotate around the release pin 6. The release bracket 4 is connected to the linkage pin 5 through a pin hole and can rotate.

[0070] The electromagnetic induction device comprises an excitation coil 23 and a push-pull electromagnet 16. The excitation coil 23, a brake spring 22 and a cylindrical pin 25 are installed between the armature 12 and the end cover 1 with an iron core. The excitation coil 23 is arranged on the outside of the rotating shaft 24. The brake spring 22 and the cylindrical pin 25 are arranged on the outside of the excitation coil 23. The end cover 1 with an iron core is connected to the motor base; the end cover 1 with an iron core is connected to the motor base and is the main supporting component of the electromagnetic brake. The end cover 1 with an iron core is made of a magnetic conductive material and is equipped with an excitation coil 23. The excitation part of the electromagnetic brake is integrated with the motor end cover, which simplifies the structure, reduces the cost and shortens the length of the motor.

[0071] The armature 12 is made of magnetic conductive material, and forms a closed magnetic circuit with the magnetic conductive surface of the iron core end cover 1. Under the action of the magnetic force generated by the power of the excitation coil 23, a magnetic attraction effect is generated; a brake spring 22 is installed between the iron core end cover 1 and the armature 12. When the power of the excitation coil 23 is cut off, the armature 12 is pushed toward the friction disk 11 to play a friction braking role.

[0072] A fan is installed above the friction disc 11, and the fan is used for heat dissipation; an adjusting nut 8 is arranged above the friction disc 11, and the adjusting nut 8 limits the friction disc 11, and the adjusting nut 8 is sleeved to adjust the brake air gap 26; an encoder shaft 9 is connected to the upper part of the rotating shaft 24, and the adjusting nut 8 is sleeved on the encoder shaft 9;

[0073] The friction material is bonded to the fan, replacing an independent fan to provide cooling air volume, and the structure is simple and economical; under the pressure of the brake spring 22, the armature 12 and the friction disc 11 generate positive pressure and friction force to form a friction pair, which plays a braking role; the inner hole of the friction disc 11 with the fan cooperates with the rotating shaft 24, and the torque is transmitted by a flat key; an adjusting nut 8 is installed above the friction disc 11 to limit it, and the brake air gap 26 can be adjusted by adjusting the position of the adjusting nut 8.

[0074] The core end cover 1 is provided with a locking mechanism, and the locking mechanism includes a locking bracket 14 and a locking pin 15; the locking bracket 14 is connected to the core end cover 1 through the locking pin 15, and the locking bracket 14 can rotate around the locking pin 15; the locking bracket 14 is provided with a buckle, and the edge of the armature 12 is provided with a lug, and the buckle cooperates with the lug for clamping;

[0075] When the buckle of the locking bracket 14 is in contact with the ear of the armature 12, the buckle presses the ear of the armature 12 from above, the armature 12 cannot move upward, the friction surface of the armature 12 and the friction disk 11 are in a separated state, and the rotating shaft 24 can rotate freely, thereby realizing the release function of the brake; when the buckle of the locking bracket 14 is separated from the ear of the armature 12, the armature 12 moves upward under the pressure of the brake spring 22, and is close to the friction disk 11 above, generating positive pressure and friction force to form a friction pair, thereby playing a braking role.

[0076] The locking bracket 14 is provided with a T-slot, which is connected to the electromagnet core shaft 17 of the push-pull electromagnet 16. A limit nut is provided at the upper end of the push-pull electromagnet 16, and the lower end surface of the limit nut is a limit surface for the switch bracket to rotate downward; when the push-pull electromagnet 16 is energized, the electromagnet core shaft 17 moves upward under the action of the magnetic force, and drives the locking bracket 14 to swing upward; when the push-pull electromagnet 16 is de-energized, the upward pulling magnetic force disappears, and the locking bracket 14 swings downward under the action of gravity.

[0077] The locking bracket 14 is provided with an auxiliary compression spring 18 and a micro switch contact piece 21. The auxiliary compression spring 18 is arranged above the micro switch contact piece 21, and the micro switch contact piece 21 moves up and down with the locking bracket 14; the auxiliary tension spring 2 is arranged on the release bracket 4, and the auxiliary release handle 3 mechanism moves downward. The pressure generated is about twice the gravity of the switch bracket, which is used to increase the downward swinging force of the locking bracket 14 and improve the action reliability. A limit nut is installed on the upper end of the electromagnet core shaft 17, and the lower end surface of the limit nut is the limit surface for the downward rotation of the switch bracket.

[0078] The push-pull electromagnet 16 is fixed on the electromagnet mounting bracket 19, and a micro switch 20 is fixed on the electromagnet mounting bracket 19. The electromagnet mounting bracket 19 is fixed to the end cover 1 with an iron core by screws; the push-pull electromagnet 16 and the micro switch 20 are fixed to the electromagnet mounting bracket 19, and then fixed to the end cover 1 with an iron core by screws. It is also made of sheet metal, and a small hole is opened on it for threading and fixing the cable;

[0079] The locking bracket 14 is also provided with a micro switch contact piece 21, which moves up and down with the locking bracket 14, thereby making contact and separating with the micro switch 20 button above it, and the micro switch 20 transmits a power on and off signal to determine the opening and closing state of the brake. The micro switch contact piece 21 can be adjusted up and down before installation and positioning to ensure the relative position with the micro switch 20 is accurate. After the position is determined, it is fixed by screws, and the buckles on the upper and lower parts of the contact piece are bent to strictly maintain the fixed position to avoid displacement and failure after long-term collision.

[0080] The encoder shaft 9 passes through the pores on the encoding connecting plate 10 and is connected to the friction plate with a fan. One end of the encoding connecting plate 10 is connected to the side of the core end cover 1, and the other end is used to install the encoder. The encoder shaft 9 and the encoding connecting plate 10 are used to install the encoder, and an encoder installation interface is provided to users who need an encoder. The locking bracket 14 and the electromagnet mounting bracket 19 are both made of sheet metal, with low economic cost.

[0081] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A side-mounted electric wind vane electromagnetic brake device, characterized in that: The invention comprises an electric release mechanism, which comprises an iron core end cover (1), an electromagnetic induction device, an armature (12), a friction disk (11) and a rotating shaft (24). The armature (12) is arranged above the iron core end cover (1), the electromagnetic induction device is installed in the iron core end cover (1), the friction disk (11) is arranged above the armature (12), and the iron core end cover (1), the armature (12) and the friction disk (11) are all sleeved on the rotating shaft (24); the electromagnetic induction device comprises an excitation coil (23) and a push-pull electromagnet (16), the excitation coil (23), a brake spring (22) and a cylindrical pin (25) are installed between the armature (12) and the iron core end cover (1), the excitation coil (23) is arranged on the outer side of the rotating shaft (24), the brake spring (22) and the cylindrical pin (25) are arranged on the outer side of the excitation coil (23), and the iron core end cover (1) is connected to the motor base; The armature (12) is made of a magnetically conductive material. The armature (12) and the magnetically conductive surface of the core end cover (1) form a closed magnetic circuit. When the excitation coil (23) is energized, a magnetic attraction is generated. When the excitation coil (23) is de-energized, the armature (12) is pushed toward the friction disk (11). The core end cover (1) is provided with a locking mechanism, which comprises a locking bracket (14) and a locking pin (15); the locking bracket (14) is connected to the core end cover (1) via the locking pin (15), and the locking bracket (14) can rotate around the locking pin (15); a buckle is provided on the locking bracket (14), and a lug is provided on the edge of the armature (12), and the buckle and the lug are matched to be clamped; When the buckle of the locking bracket (14) is in contact with the ear of the armature (12), the buckle presses the ear of the armature (12) from above, the armature (12) cannot move upward, the friction surface of the armature (12) and the friction disk (11) are in a separated state, and the rotating shaft (24) can rotate freely; when the buckle of the locking bracket (14) is separated from the ear of the armature (12), the armature (12) moves upward under the pressure of the brake spring (22), and is pressed against the friction disk (11) above, generating positive pressure and friction force to form a friction pair.

2. A side-mounted electric wind vane electromagnetic brake device according to claim 1, characterized in that: The invention also comprises a manual release mechanism, which comprises a release handle (3), a release bracket (4) and a release pin (6). The release handle (3) is connected to the release bracket (4). The release bracket (4) is connected to the end cover (1) with the iron core through the release pin (6). The release pin (6) is slidably connected to the armature (12).

3. A side-mounted electric wind vane electromagnetic brake device according to claim 1, characterized in that: A fan is installed above the friction disc (11) for heat dissipation; an adjusting nut (8) is arranged above the friction disc (11) for limiting the position of the friction disc (11) and for adjusting the brake air gap (26); an encoder shaft (9) is connected to the upper part of the rotating shaft (24) and the adjusting nut (8) is sleeved on the rotating shaft (24).

4. A side-mounted electric wind vane electromagnetic brake device according to claim 1, characterized in that: A T-shaped slot is provided on the locking bracket (14), and the T-shaped slot is connected to the electromagnet core shaft (17) of the push-pull electromagnet (16). A limit nut is provided on the upper end of the electromagnet core shaft (17), and the lower end surface of the limit nut is a limit surface for the switch bracket to rotate downward.

5. A side-mounted electric wind vane electromagnetic brake device according to claim 1, characterized in that: An auxiliary compression spring (18) and a micro switch contact piece (21) are arranged on the locking bracket (14); the auxiliary compression spring (18) is arranged above the micro switch contact piece (21); and the micro switch contact piece (21) moves up and down with the locking bracket (14).

6. A side-mounted electric wind vane electromagnetic brake device according to claim 4, characterized in that: The push-pull electromagnet (16) is fixed on an electromagnet mounting bracket (19), a micro switch (20) is also fixed on the electromagnet mounting bracket (19), and the electromagnet mounting bracket (19) is fixed on the end cover with an iron core (1) by screws.

7. A side-mounted electric wind vane electromagnetic brake device according to claim 2, characterized in that: An auxiliary tension spring (2) is arranged on the release bracket (4), and the auxiliary tension spring (2) is used to assist the release handle (3) mechanism to move downward; the release bracket (4) is connected to the linkage pin shaft (5) through a pin hole, and the linkage pin shaft (5) is connected to the hexagon socket screw (7) through a thread, and the hexagon socket screw (7) passes through a hole on the armature (12) and can slide up and down in the hole.

8. The side-mounted electric wind vane electromagnetic brake device according to claim 3, characterized in that: The encoder shaft (9) passes through the pores on the encoder connecting plate (10) and is connected to the encoder. One end of the encoder connecting plate (10) is connected to the side of the core end cover (1), and the other end is used for mounting the encoder.

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