Servo motor with active braking function

Abstract

The utility model belongs to the technical field of servo motors, and particularly relates to a servo motor with an active braking function. The expansion brake comprises a connecting shaft, a brake metal pendulum bob, a brake battery iron, a mechanical brake rubber seat, a wear-resistant brake pad and an air bag; a connecting shaft is inserted in the middle of the expansion brake in a penetrating mode, a pair of braking metal pendulum bobs are symmetrically connected to the outer side of the connecting shaft, a pair of braking battery irons and a pair of mechanical braking rubber bases are connected to the interior of a shell of the expansion brake, and the braking battery irons and the mechanical braking rubber bases are distributed in an alternating cross mode. A wear-resistant brake pad is arranged on the surface of the mechanical brake rubber seat, and an air bag is arranged in the mechanical brake rubber seat; and a micro gap is kept between the outer surface of the brake metal pendulum bob and the brake battery iron and the mechanical brake rubber seat. The detachable expansion brake is adopted, whether the brake is installed or not can be freely selected according to actual use requirements, and the application range is wider.

Description

Technical Field

[0001] The utility model belongs to the technical field of servo motors, in particular to a servo motor with active braking. Background Art

[0002] Servo motors have been widely used in machine tools, printing equipment, robots, automated production lines, AGVs, electric forklifts and other industries that have high requirements for work reliability and operating stability due to their high positioning accuracy, stable operating speed and strong overload capacity.

[0003] In order to meet the functional and performance requirements of actual working conditions, existing servo motors need to be decelerated and braked when working. Currently, the brakes are integrated inside the servo motors. Once the brakes are worn and damaged, it is difficult to repair and needs to be replaced as a whole. Utility Model Content

[0004] In order to solve the defects and shortcomings of the prior art, the purpose of the utility model is to provide a servo motor with active braking which has a simple structure, reasonable design and easy use. It adopts a detachable expansion brake, and can freely choose whether to install the brake according to actual use requirements, and has a wider applicability.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: it includes a double-headed servo motor, an expansion brake, and a combined plug connector; the tail of the double-headed servo motor is connected to the expansion brake, and the upper ends of the double-headed servo motor and the expansion brake are plugged with a combined plug connector; wherein the expansion brake includes a connecting shaft, a brake metal pendulum, a brake battery iron, a mechanical brake rubber seat, a wear-resistant brake pad, and an airbag; a connecting shaft is inserted in the middle of the expansion brake, and a pair of brake metal pendulums are symmetrically connected to the outside of the connecting shaft, and a pair of brake battery irons and a pair of mechanical brake rubber seats are respectively connected to the inside of the expansion brake housing, and the brake battery irons and the mechanical brake rubber seats are arranged in an alternating cross distribution; the surface of the mechanical brake rubber seat is provided with a wear-resistant brake pad, and the inside of the mechanical brake rubber seat is provided with an airbag; the outer surface of the brake metal pendulum maintains a micro gap with the brake battery iron and the mechanical brake rubber seat.

[0006] Preferably, both ends of the middle rotor of the double-headed servo motor extend to the outside of the shell, the left side of the rotor extends outward by 5-10CM, and the right side of the rotor remains flush with the right side shell of the double-headed servo motor.

[0007] Preferably, an embedded groove is provided at the right end of the rotor, and the embedded groove is plugged into the connecting shaft to realize the transmission connection between the double-headed servo motor and the expansion brake.

[0008] Preferably, the brake battery iron and the mechanical brake rubber seat brake the inertial rotation transmitted by the connecting shaft by means of magnetic attraction and mechanical friction respectively.

[0009] Preferably, the embedded groove and the connecting shaft end are special-shaped structures in which a square and a cross are superimposed.

[0010] Preferably, the airbag is connected to an external micro air pump, and the start and stop of the brake battery iron and the air pump connected to the outside of the airbag are interlocked with the start and stop of the double-head servo motor.

[0011] Preferably, the double-headed servo motor and the expansion brake are connected by bolts at four corners, and a sealing buffer gasket is provided between the two.

[0012] After adopting the above structure, the utility model has the following beneficial effects:

[0013] 1. It uses a detachable expansion brake, and you can freely choose whether to install the brake according to actual usage needs, which has a wider applicability.

[0014] 2. The expandable expansion brake is easy to maintain, does not damage the original structure of the servo motor, and is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model is described in detail through the following specific implementations and drawings.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a connection diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the expansion brake 2 of the utility model

[0019] Figure 4 This is a schematic diagram of the structure of the embedded groove 5 of the utility model;

[0020] Explanation of the reference numerals in the accompanying drawings: double-headed servo motor 1, expansion brake 2, combined plug connector 3, rotor 4, embedded groove 5, connecting shaft 6, brake metal pendulum 7, brake battery iron 8, mechanical brake rubber seat 9, wear-resistant brake pad 10, airbag 11. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described below by specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0022] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0023] See Figure 1-Figure 4 As shown, this specific embodiment adopts the following technical scheme: it includes a double-headed servo motor 1, an expansion brake 2, and a combined plug connector 3; the tail of the double-headed servo motor 1 is connected with the expansion brake 2, and the upper ends of the double-headed servo motor 1 and the expansion brake 2 are plugged with the combined plug connector 3; wherein, the expansion brake 2 includes a connecting shaft 6, a brake metal pendulum 7, a brake battery iron 8, a mechanical brake rubber seat 9, a wear-resistant brake pad 10, and an airbag 11; the middle of the expansion brake 2 is interspersed with a connecting shaft 6, and a pair of brake metal pendulums 7 are symmetrically connected to the outside of the connecting shaft 6, and a pair of brake battery irons 8 and a pair of mechanical brake rubber seats 9 are respectively connected to the inside of the expansion brake 2 shell, and the brake battery irons 8 and the mechanical brake rubber seats 9 are alternately cross-distributed; the surface of the mechanical brake rubber seat 9 is provided with a wear-resistant brake pad 10, and the inside of the mechanical brake rubber seat 9 is provided with an airbag 11; the outer surface of the brake metal pendulum 7 maintains a micro gap with the brake battery iron 8 and the mechanical brake rubber seat 9.

[0024] Among them, both ends of the intermediate rotor 4 of the double-headed servo motor 1 extend to the outside of the housing, the left side of the rotor 4 extends outward by 5-10CM, and the right side of the rotor 4 is kept flush with the right side housing of the double-headed servo motor 1; the right end of the rotor 4 is provided with an embedded groove 5, and the embedded groove 5 is plugged with the connecting shaft 6 to realize the transmission connection between the double-headed servo motor 1 and the expansion brake 2. The embedded groove 5 and the end of the connecting shaft 6 are a special-shaped structure in which a square and a cross are superimposed.

[0025] In addition, the brake battery iron 8 and the mechanical brake rubber seat 9 brake the inertial rotation transmitted by the connecting shaft 6 by means of magnetic attraction and mechanical friction respectively. The airbag 11 is connected to an external micro air pump, and the start and stop of the brake battery iron 8 and the airbag 11 externally connected air pump are interlocked with the start and stop of the double-headed servo motor 1; the double-headed servo motor 1 and the expansion brake 2 are connected by bolts at the four corners, and a sealing buffer gasket is provided between the two.

[0026] The working principle of this specific embodiment is: first, after the double-headed servo motor 1 loses power, the rotor 4 continues to rotate due to inertia. Since the rotor 4 is coaxially connected to the connecting shaft 6, the connecting shaft 6 rotates synchronously with the rotor 4. In order to brake in time, the expansion brake 2 is started in time after the double-headed servo motor 1 loses power. After the brake battery iron 8 is energized, it quickly generates magnetic attraction to the brake metal pendulum 7 for instantaneous deceleration. At the same time, the internal air bag 11 of the mechanical brake rubber seat 9 is instantly inflated under the action of an external micro air pump, and the wear-resistant brake pad 10 is pushed out to contact the rotating brake metal pendulum 7 for active braking, so that the rotor 4 of the double-headed servo motor 1 stops rotating instantly. Finally, under the action of the delay system, the brake battery iron 8 loses power and demagnetizes, and the internal air bag 11 of the mechanical brake rubber seat 9 is depressurized and reset.

[0027] The utility model adopts a detachable expansion brake, and can freely choose whether to install the brake according to actual use needs, and has wider applicability. The expansion type expansion brake is easy to maintain, does not damage the original structure of the servo motor, and has higher safety.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A servo motor with active braking, characterized in that: It comprises a double-headed servo motor, an expansion brake, and a combined plug connector; the tail of the double-headed servo motor is connected to the expansion brake, and the upper ends of the double-headed servo motor and the expansion brake are plugged with the combined plug connector; wherein the expansion brake comprises a connecting shaft, a brake metal pendulum, a brake battery iron, a mechanical brake rubber seat, a wear-resistant brake pad, and an airbag; a connecting shaft is inserted in the middle of the expansion brake, a pair of brake metal pendulums are symmetrically connected to the outside of the connecting shaft, and a pair of brake battery irons and a pair of mechanical brake rubber seats are respectively connected to the inside of the expansion brake housing, and the brake battery irons and the mechanical brake rubber seats are arranged in an alternating cross pattern; the surface of the mechanical brake rubber seat is provided with a wear-resistant brake pad, and the inside of the mechanical brake rubber seat is provided with an airbag; the outer surface of the brake metal pendulum maintains a micro gap with the brake battery iron and the mechanical brake rubber seat.

2. A servo motor with active braking according to claim 1, characterized in that: Both ends of the middle rotor of the double-head servo motor extend to the outside of the shell, the left side of the rotor extends outward by 5-10CM, and the right side of the rotor remains flush with the right side shell of the double-head servo motor.

3. A servo motor with active braking according to claim 2, characterized in that: The right end of the rotor is provided with an embedded groove, which is plugged into the connecting shaft to realize the transmission connection between the double-head servo motor and the expansion brake.

4. The servo motor with active braking according to claim 1, characterized in that: The brake battery iron and the mechanical brake rubber seat brake the inertial rotation transmitted by the connecting shaft through magnetic attraction and mechanical friction respectively.

5. The servo motor with active braking according to claim 3, characterized in that: The embedded groove and the connecting shaft end are special-shaped structures in which a square and a cross are superimposed.

6. The servo motor with active braking according to claim 1, characterized in that: The airbag is connected to an external micro air pump, and the start and stop of the brake battery iron and the air pump connected to the outside of the airbag are interlocked with the start and stop of the double-head servo motor.

7. The servo motor with active braking according to claim 1, characterized in that: The double-head servo motor and the expansion brake are connected by bolts at four corners, and a sealing buffer gasket is arranged between the two.

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