CN212202917U

CN212202917U - Low-power-consumption electromagnetic band-type brake device for braking of rotating mechanism and driving circuit thereof

Info

Publication number: CN212202917U
Application number: CN202020226256.5U
Authority: CN
Inventors: 赵杰; 樊继壮; 李长乐
Original assignee: Luoyang Shangqi Robot Technology Co ltd
Current assignee: Luoyang Shangqi Robot Technology Co ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-12-22
Anticipated expiration: 2030-02-28

Abstract

The utility model discloses a low-power consumption electromagnetism band-type brake device and drive circuit that rotatory mechanism braking was used, including stator, armature, ring shape coil former, band-type brake coil, cylinder spring and rotating assembly, wherein, the winding of band-type brake coil is in on the outer face of cylinder of coil former, the coil former is fixed to be inlayed on the stator, the stator sets up to annular ladder structure, a terminal surface edge of stator is provided with four cylinder grooves according to circumference range and equidistance, and every all install in the cylinder groove the one end of cylinder spring. The utility model relates to a novelty for the power failure braking of rotary joint or rotary mechanism of robot has simple structure, low power dissipation, gives out heat little characteristics, has positive meaning in the aspect of energy-conservation, environmental protection.

Description

Low-power-consumption electromagnetic band-type brake device for braking of rotating mechanism and driving circuit thereof

Technical Field

The utility model relates to a band-type brake device field that has low-power consumption, be used for robot rotary joint or rotary mechanism to fall electric braking usefulness specifically is a low-power consumption electromagnetism band-type brake device and drive circuit that rotary mechanism braking used.

Background

The electromagnetic band-type brake is a common automatic execution element in the modern industrial field, mainly plays a role in braking control of a movement mechanism in a mechanical transmission system, and has the advantages of compact structure, sensitive response, reliable use, easy realization of remote control and the like. The electromagnetic band-type brake mainly plays a braking role by means of friction between two objects, and after the band-type brake is electrified, electromagnetic force is generated inside the electromagnetic band-type brake to control the attachment or separation between the two friction objects, so that the motion mechanism is braked or loosened.

The electromagnetic band-type brake is mainly used for preventing the mechanism from freely moving after power failure, and the electromagnetic band-type brake is mainly used for actively controlling the movement mechanism in the operation process of the equipment.

For a power-down braking type electromagnetic band-type brake, a plurality of mature products exist in the market at present, the structure and the overall dimension of the electromagnetic band-type brake cannot be customized and changed generally, and the electromagnetic band-type brake cannot be applied to special mechanisms with strict requirements on the structure and the space dimension. In addition, the existing electromagnetic band-type brake driving circuit drives a power supply with fixed voltage input, and when a band-type brake is electrified to work, the driving power supply with the fixed voltage needs to be input all the time, so that the energy consumption and the heat generation of the band-type brake are increased, and the service life of the band-type brake and related mechanisms is further shortened.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a low-power consumption electromagnetism band-type brake device and drive circuit that rotatory mechanism braking was used, electromagnetism band-type brake device simple structure can realize the braking and the release of rotation mechanism, and simultaneously, drive control circuit is at electromagnetism band-type brake device during operation, just lets in higher voltage to it in the short time of electricity on the initial, and break away from the back at armature and rotor friction disc, only lets in lower driving voltage to it and maintains its release state, is showing the consumption and the calorific capacity that have reduced electromagnetism band-type brake device.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a low-power consumption electromagnetism band-type brake device that rotatory mechanism braking was used, includes stator, armature, ring shape coil former, band-type brake coil, cylinder spring and rotating assembly, wherein, the winding of band-type brake coil is in on the outer face of cylinder of coil former, the coil former is fixed to be inlayed on the stator, its characterized in that: the stator is of an annular stepped structure, four cylindrical grooves are circumferentially arranged and equidistantly arranged at the edge of one end face of the stator, each cylindrical groove is internally provided with one end of a cylindrical spring, the other end of each cylindrical spring abuts against one end face of the armature, the armature is connected to the end face, provided with the cylindrical grooves, of the stator through a plurality of connecting elastic pieces, and a gap is reserved between the armature and the rotating assembly.

Further, as preferred, rotating assembly includes rotor, rotor friction disc and rivet two, the rotor with through a plurality of between the rotor friction disc two laminating and fixed connection of rivet, the rotor can be connected in rotary mechanism's joint axis of rotation to the joint axis of rotation passes through the rotor drives the rotor friction disc rotates.

Preferably, the two ends of the connecting elastic sheet are respectively and fixedly connected to the stator and the armature through a plurality of rivets.

Further, preferably, the band-type brake coil is made of enameled wire.

The utility model provides a drive circuit of low-power consumption electromagnetism band-type brake device that rotatory mechanism braking was used includes drive power supply, is provided with normally closed contact A's time delay relay KM1, freewheeling diode, reverse stop diode and resistance, drive power supply's anodal 24_ Q is equipped with two pins, one of them the pin passes through time delay relay KM1 line connection the anodal input of band-type brake coil, another the pin loops through resistance and reverse stop diode line connection the anodal input of band-type brake coil, the negative pole input of band-type brake coil passes through freewheeling diode line connection drive power supply's negative pole GND _ Q.

Compared with the prior art, the beneficial effects of the utility model are that:

1. electromagnetic band-type brake device: the stator is mounted on the stationary body of the mechanism. Winding a band-type brake coil on a coil frame, then embedding the band-type brake coil in an annular groove of a stator, placing four cylindrical springs in four symmetrically designed cylindrical grooves of the stator, wherein one end of each cylindrical spring is propped against the stator in each cylindrical groove, and the other end of each cylindrical spring is propped against an armature connected with the stator through a connecting elastic sheet; the rotor friction plate is connected with the rotor through rivets, and the rotor is connected to a joint rotating shaft of the rotating mechanism, rotates along with the joint rotating shaft and drives the rotor friction plate to rotate; when the brake coil is not electrified, the four cylindrical springs tightly press the armature on the rotor friction plate to enable the brake device to be in a braking state, otherwise, when the brake coil is electrified with required driving voltage, the stator and the brake coil form an electromagnet together, the armature is separated from the rotor friction plate by overcoming the elasticity of the springs, and the brake mechanism is enabled to be in a releasing state.

2. The driving circuit of the electromagnetic band-type brake device comprises: when the band-type brake device is initially electrified, the elastic force of a cylindrical spring between the stator and the armature can be overcome by inputting relatively high voltage to the band-type brake coil, so that the armature is separated from the rotor friction plate, and in the long-time working stage of maintaining the separation of the armature from the rotor friction plate, the separation state of the armature and the rotor friction plate can be maintained only by inputting relatively low voltage to the band-type brake coil because a magnetic circuit air gap between the armature and an electromagnet is close to zero; therefore, the driving circuit of the band-type brake device is designed to be capable of automatically switching different input voltages, relatively high voltage is applied to the band-type brake coil when the band-type brake device is initially electrified, so that the armature is separated from the rotor friction plate, after the state is stable, the driving circuit automatically switches the input voltage to low input voltage, and the separation state of the armature and the rotor friction plate is maintained, so that the working power of the band-type brake is reduced, and the energy consumption and the heat productivity are reduced.

Drawings

Fig. 1 is a schematic structural diagram of a low-power consumption electromagnetic band-type brake device for braking a rotary mechanism;

3 FIG. 3 2 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a schematic structural diagram of a low-power consumption electromagnetic band-type brake device for braking a rotary mechanism in a braking state;

FIG. 5 is a driving circuit diagram of a low power consumption electromagnetic band-type brake device for braking a rotary mechanism;

fig. 6 is a coil circuit diagram of the time delay relay.

In the figure: 1. riveting one; 2. a stator; 3. an armature; 4. a bobbin; 5. a band-type brake coil; 6. connecting the elastic sheets; 7. a second rivet; 8. a cylindrical spring; 9. a rotor; 10. a rotor friction plate; 11. a time delay relay; 12. a freewheeling diode; 14. a reverse blocking diode; 15. and (4) resistance.

Detailed Description

In combination with the drawings of the embodiments of the present invention, the following will clearly and completely describe the technical solutions of the embodiments of the present invention.

Referring to fig. 1-6, in the drawings, a indicates a closed contact of the

delay relay

11, 24V _ Q indicates an anode of the driving power supply, GND _ Q indicates a cathode of the driving power supply, and KM1 indicates the delay relay, the present invention provides the following technical solutions: the utility model provides a low-power consumption electromagnetism band-type brake device that rotatory mechanism braking was used, includes stator 2, armature 3, ring shape coil former 4, band-type brake coil 5, cylindrical spring 8 and rotating assembly, and wherein, the winding of band-type brake coil 5 is on the outer face of cylinder of coil former 4, and coil former 4 is fixed to be inlayed on stator 2, its characterized in that: stator 2 sets up to annular stair structure, and a terminal surface edge of stator 2 is provided with four cylinder grooves according to circumference range and equidistance, and all installs cylindrical spring 8's one end in every cylinder groove, and cylindrical spring 8's the other end supports on an terminal surface of armature 3, and armature 3 is connected with stator 2 on stator 2 offers a terminal surface of cylinder groove through a plurality of connection shell fragment 6 connections, leaves the clearance between armature 3 and the rotating assembly.

In this embodiment, furthermore, the rotating assembly includes a rotor 9, a rotor friction plate 10 and two rivets 7, the rotor 9 and the rotor friction plate 10 are attached and fixedly connected through the two rivets 7, and the rotor 9 can be connected to the joint rotating shaft of the rotating mechanism, so that the joint rotating shaft drives the rotor friction plate 10 to rotate through the rotor 9. Specifically, the rotor 9 is connected to a joint rotating shaft of the rotating mechanism, rotates together with the joint rotating shaft, and drives the rotor friction plate 10 to rotate.

In this embodiment, further, two ends of the connecting elastic sheet 6 are respectively and fixedly connected to the stator 2 and the armature 3 through a plurality of rivets one 1, and the connecting elastic sheet 6 has elasticity.

In this embodiment, further, the band-type brake coil 5 is made of an enameled wire.

A driving circuit of a low-power-consumption electromagnetic band-type brake device for braking of a rotary mechanism comprises a driving power supply, a time delay relay KM111 provided with a normally closed contact A, a fly-wheel diode 12, a reverse cut-off diode 14 and a resistor 15, wherein an anode 24_ Q of the driving power supply is provided with two pins, one pin is connected with an anode input end of a band-type brake coil 5 through a line of the time delay relay KM111, the other pin is connected with an anode input end of the band-type brake coil 5 through the resistor 15 and the reverse cut-off diode 14 sequentially, a cathode input end of the band-type brake coil 5 is connected with a cathode GND _ Q of the driving power supply through a line of the fly-wheel diode 12, and the fly-wheel. Specifically, an annular groove is formed in the outer ring of the stator 2, and a coil rack 4 is installed in the annular groove; when the band-type brake coil 5 is not electrified, the four cylindrical springs 8 push the armature 3 and the stator 2 away, and press the armature 3 on the rotor friction plate 10, so that the band-type brake mechanism is in a braking state; on the contrary, when the brake coil 5 is supplied with the required driving voltage, the stator 2 and the brake coil 5 form an electromagnet together, the armature 3 is separated from the rotor friction plate 10 by overcoming the elasticity of the spring 8, and is attached to the stator 2, so that the brake device is in a release state.

In specific implementation, when the band-type brake device is initially powered on, the band-type brake coil 5 of the delay relay 11 is powered on, but the normally closed contact a is disconnected after a set time delay, so that the voltage of the positive pole of the driving power supply can be directly input into the band-type brake coil 5 through the normally closed contact a of the delay relay 11, and because the voltage of the positive pole of the driving power supply of the other path firstly passes through the resistor 15 which can reduce the voltage, a voltage difference is formed between two sides of the reverse cut-off diode 14, and by means of the reverse cut-off effect of the reverse cut-off diode 14, the voltage of the positive pole of the power supply of the one path passing through the normally closed contact a of the delay relay 11 can not be input into the resistor 15 of the other path, but is directly and completely input into the band-type brake coil 5, so that the band-type brake coil 5 and the stator 2 generate relatively strong electromagnetic attraction to the armature 3 together, and the armature 3, meanwhile, the rotor friction plate 10 is separated, so that the joint rotating shaft of the mechanism is released; after the set time delay, the normally closed contact a of the time delay relay 11 is disconnected, the positive pole of the external driving power supply firstly performs certain voltage reduction through the voltage reduction resistor 15, then the voltage reduction is performed through the reverse cutoff diode 14 to be connected with one end of the internal contracting brake coil, and lower voltage relative to the positive pole of the external driving power supply is input into the internal contracting brake coil 5 to maintain the adsorption and attachment state between the stator 2 and the armature 3, so that the release of the mechanism joint rotating shaft is continuously maintained.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a low-power consumption electromagnetism band-type brake device that rotatory mechanism braking was used, includes stator (2), armature (3), ring shape coil former (4), band-type brake coil (5), cylindrical spring (8) and rotating assembly, wherein, band-type brake coil (5) winding is in on the outer face of cylinder of coil former (4), coil former (4) are fixed inlay on stator (2), its characterized in that: the stator (2) is arranged to be of an annular stepped structure, four cylindrical grooves are arranged on the edge of one end face of the stator (2) according to the circumference and are equidistantly arranged, each cylindrical groove is internally provided with one end of a cylindrical spring (8), the other end of each cylindrical spring (8) abuts against one end face of the armature (3), the armature (3) is connected onto one end face, provided with the cylindrical grooves, of the stator (2) through a plurality of connecting elastic pieces (6), and a gap is reserved between the armature (3) and the rotating assembly.

2. A low-power consumption electromagnetic band-type brake device for braking a rotary mechanism according to claim 1, wherein: the rotating assembly comprises a rotor (9), a rotor friction plate (10) and a rivet II (7), the rotor (9) and the rivet II (7) are attached and fixedly connected through a plurality of rivets between the rotor friction plate (10), the rotor (9) can be connected to a joint rotating shaft of the rotating mechanism, and therefore the joint rotating shaft can conveniently pass through the rotor (9) to drive the rotor friction plate (10) to rotate.

3. A low-power consumption electromagnetic band-type brake device for braking a rotary mechanism according to claim 1, wherein: two ends of the connecting elastic sheet (6) are respectively and fixedly connected to the stator (2) and the armature (3) through a plurality of rivets I (1).

4. A low-power consumption electromagnetic band-type brake device for braking a rotary mechanism according to claim 1, wherein: the band-type brake coil (5) is made of enameled wire.

5. A driving circuit of a low-power-consumption electromagnetic band-type brake device for braking a rotary mechanism according to any one of claims 1 to 4, which comprises a driving power supply, a time delay relay KM1 (11) provided with a normally closed contact A, a freewheeling diode (12), a reverse blocking diode (14) and a resistor (15), wherein an anode 24_ Q of the driving power supply is provided with two pins, one pin is in line connection with an anode input end of a band-type brake coil (5) through the time delay relay KM1 (11), the other pin is in line connection with an anode input end of the band-type brake coil (5) through the resistor (15) and the reverse blocking diode (14) in sequence, and a cathode input end of the band-type brake coil (5) is in line connection with a cathode GND _ Q of the driving power supply through the freewheeling diode (12).