Electromagnetic brake with built-in power supply

Abstract

The utility model relates to the technical field of brakes, and provides a built-in power supply type electromagnetic brake which comprises a brake body with a coil, the coil is connected with a power supply outgoing line, one side of the brake body is connected with a battery base, a storage battery is arranged in the battery base, and the storage battery and the power supply outgoing line are connected through a wire to form a power supply loop. The power supply loop is provided with a switch. When power is cut off, the power supply loop is communicated through the switch, and the coil is powered through the storage battery, so that the purpose of relieving braking is achieved, equipment can work normally, a standby power supply does not need to be found temporarily, and time delaying normal work of the equipment is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of brake, specifically, an internal power supply type electromagnetic brake. BACKGROUND

[0002] The electromagnetic brake is widely used for the working shaft of various devices (especially the output shaft of a motor), which is usually composed of a magnetic yoke, a rotor, a spring, a moving plate and the like, under the condition of power-off, the elastic force of the spring makes the moving plate tightly hold the rotor to generate a friction force, thereby forming a brake; under the condition of power-on, the magnetic yoke generates a magnetic field, and the magnetic field force overcomes the elastic force of the spring to make the moving plate separate from the rotor, thereby releasing the brake.

[0003] The existing brake is mostly powered by an external power supply, when the device needs to work (i.e. needs to release the brake) under the condition of power failure, a standby power supply needs to be found to supply power to the coil, and the standby power supply is usually stored in a warehouse, and it takes a lot of time to find the standby power supply and send it to the device use site, thereby delaying the normal working time of the device for a long time. SUMMARY

[0004] The utility model aims at providing an internal power supply type electromagnetic brake to solve the above-mentioned defects of the prior art.

[0005] The utility model realizes the following technical scheme:

[0006] An internal power supply type electromagnetic brake, comprising a brake body with a coil, the coil being connected with a power supply lead-out wire, a battery base being connected to one side of the brake body, an accumulator being arranged inside the battery base, the accumulator and the power supply lead-out wire being connected through a wire to form a power supply loop, the power supply loop being provided with a switch.

[0007] Optionally, the brake body comprises a magnetic yoke, a moving plate, a rotor and a mounting flange arranged in sequence, the coil is arranged in the magnetic yoke, the magnetic yoke and the mounting flange are fixedly connected through a first connecting screw, and the mounting flange wraps the magnetic yoke, the moving plate and the rotor, one end of the mounting flange close to the magnetic yoke is open, and the battery base is connected to the open end of the mounting flange through a second connecting screw.

[0008] Optionally, the brake body is provided with a mounting screw, one side of the magnetic yoke close to the battery base is provided with a countersunk hole for accommodating the head of the mounting screw, and the mounting screw extends out of the side of the mounting flange away from the battery base.

[0009] Optionally, an avoiding through hole is arranged on the battery base corresponding to the mounting screw, and the diameter of the avoiding through hole is greater than the diameter of the head of the mounting screw.

[0010] Optionally, the outer end of the avoiding through hole is provided with a plug.

[0011] Optionally, the mounting flange is provided with an annular sealing groove away from one side of the battery base, and an annular sealing ring is arranged in the annular sealing groove.

[0012] Optionally, a positioning sleeve is sleeved on the first connecting screw, for determining the axial distance between the mounting flange and the magnetic yoke, and the moving plate is provided with a hole for the positioning sleeve to pass through.

[0013] Optionally, the rotor is provided with friction plates on both sides.

[0014] The technical scheme of the utility model has at least the following advantages and beneficial effects: in the utility model, a storage battery is arranged in the electromagnetic brake, the storage battery and the power supply lead are connected through a wire to form a power supply circuit, the power supply circuit is controlled to be opened and closed through a switch, when power is cut off, the power supply circuit is connected through the switch, the coil is supplied with power through the storage battery, so that the purpose of releasing the brake is achieved, the equipment can work normally, a spare power supply does not need to be found temporarily, and the time of delaying the normal work of the equipment is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A front view of the built-in power supply type electromagnetic brake is provided in the utility model;

[0016] Figure 2 A-A sectional view in Figure 1 ;

[0017] Reference signs: 1 - mounting flange, 2 - rotor, 3 - shaft sleeve, 4 - moving plate, 5 - positioning sleeve, 6 - magnetic yoke, 7 - battery base, 701 - avoiding hole, 8 - storage battery, 9 - switch, 10 - coil, 1001 - power supply lead, 11 - mounting screw, 12 - first connecting screw, 13 - second connecting screw, 14 - annular sealing ring, 15 - plug. DETAILED DESCRIPTION

[0018] Reference Figure 1 and Figure 2 , a built-in power supply type electromagnetic brake, comprising a brake body with a coil 10, the coil 10 is connected with a power supply lead 1001, one side of the brake body is connected with a battery base 7, the battery base 7 is internally provided with a storage battery 8, the storage battery 8 and the power supply lead 1001 are connected through a wire to form a power supply circuit, the power supply circuit is provided with a switch 9, that is, the opening and closing of the power supply circuit is controlled through the switch 9. When power is cut off, the power supply circuit is connected through the switch 9, the coil 10 is supplied with power through the storage battery 8, so that the purpose of releasing the brake is achieved, the equipment can work normally, a spare power supply does not need to be found temporarily, and the time of delaying the normal work of the equipment is reduced.

[0019] In the embodiment, the brake body comprises the magnetic yoke 6, the moving plate 4, the rotor 2 and the mounting flange 1 arranged in sequence, the coil 10 is arranged in the magnetic yoke 6, the coil 10 and the magnetic yoke 6 constitute the stator, the magnetic yoke 6 is fixedly connected with the mounting flange 1 through the first connecting screw 12, and the mounting flange 1 wraps the magnetic yoke 6, the moving plate 4 and the rotor 2, one end of the mounting flange 1 close to the magnetic yoke 6 is open, and the battery base 7 is connected to the open end of the mounting flange 1 through the second connecting screw 13. It should be pointed out that the mounting flange 1 and the battery base 7 can protect the storage battery 8, the magnetic yoke 6, the moving plate 4 and the rotor 2, and effectively prevent dust and water from entering.

[0020] It should be understood that theoretically, the battery base 7 can be connected to any structure of the electromagnetic brake, therefore, the structure of the brake body is only a selection, not a limitation, and of course the brake body can be other structures in other embodiments.

[0021] On the basis, the brake body is provided with the mounting screw 11, one side of the magnetic yoke 6 close to the battery base 7 is provided with a countersunk hole for accommodating the head of the mounting screw 11, the mounting screw 11 extends out of the side of the mounting flange 1 away from the battery base 7, in actual application, the side of the mounting flange 1 away from the battery base 7 is attached to the mounting surface, and the mounting screw 11 is connected to the mounting surface. Further, the side of the mounting flange 1 away from the battery base 7 is provided with an annular sealing groove, and the annular sealing groove is provided with an annular sealing ring 14, so that after the brake is installed, the sealing property of the mounting surface can be ensured, and water and dust are prevented from entering the inside of the brake from there.

[0022] The battery base 7 is provided with an avoiding through hole corresponding to the mounting screw 11, and the diameter of the avoiding through hole is greater than the diameter of the head of the mounting screw 11. It should be pointed out that in this way, the mounting screw 11 can be taken out and placed from the avoiding hole 701, so that the replacement of the storage battery 8 (i.e. the disassembly and assembly of the battery base 7) and the disassembly and assembly of the brake itself (i.e. the disassembly and assembly of the mounting screw 11) are independent of each other and do not affect each other, and the use is more convenient. Further, the outer end of the avoiding through hole is provided with a plug 15, which is made of rubber, silicone or similar materials in actual application, so as to prevent water and dust from entering the inside of the brake from the avoiding hole 701.

[0023] In the embodiment, as a selection, the first connecting screw 12 connecting the magnetic yoke 6 and the mounting flange 1 is sleeved with the positioning sleeve 5 for determining the axial distance between the mounting flange 1 and the magnetic yoke 6, and the moving plate 4 is provided with a hole for the positioning sleeve 5 to pass through, so as to facilitate limiting the radial position of the moving plate 4.

[0024] In the embodiment, the two sides of the rotor 2 are provided with friction plates, which are preferably fixed to the rotor 2 by adhesion, and the friction plates contact the magnetic yoke 6 or the mounting flange 1 to avoid directly wearing the rotor 2.

[0025] It should be understood that the central hole of the rotor 2 is connected with the working shaft of the device, for example, the output shaft of the motor. Alternatively, a shaft sleeve 3 is arranged in the central hole of the rotor 2 of the embodiment, the outer wall of the shaft sleeve 3 is provided with a spline groove, the hole wall of the central hole of the rotor 2 is provided with a spline groove matched with the spline groove, and the inner wall of the shaft sleeve 3 is provided with a key groove, so that the working shaft of the device can be connected through the key.

[0026] The preferred embodiments of the utility model are merely used for limiting the utility model, and the utility model can be changed and varied for the person skilled in the art. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An electromagnetic brake of built-in power supply type comprising a brake body having a coil to which a power supply lead is connected, characterized by The brake body is connected with a battery base on one side, the battery base is internally provided with a storage battery, the storage battery is connected with a power supply lead wire to form a power supply circuit, and the power supply circuit is provided with a switch.

2. The built-in power supply type electromagnetic brake according to claim 1, characterized by, The brake body comprises a magnetic yoke, a moving plate, a rotor and a mounting flange arranged in sequence, the coil is arranged in the magnetic yoke, the magnetic yoke is fixedly connected with the mounting flange through a first connecting screw, and the mounting flange wraps the magnetic yoke, the moving plate and the rotor, one end of the mounting flange close to the magnetic yoke is open, and the battery base is connected with the open end of the mounting flange through a second connecting screw.

3. The built-in power supply type electromagnetic brake according to claim 2, characterized by The brake body is provided with a mounting screw, one side of the magnetic yoke close to the battery base is provided with a countersunk hole for accommodating the head of the mounting screw, and the mounting screw extends out of the side of the mounting flange away from the battery base.

4. The built-in power supply type electromagnetic brake according to claim 3, wherein The battery base is provided with an avoiding through hole corresponding to the mounting screw, and the diameter of the avoiding through hole is greater than the diameter of the head of the mounting screw.

5. The built-in power supply type electromagnetic brake according to claim 4, wherein The outer end of the avoiding through hole is provided with a plug.

6. The built-in power supply type electromagnetic brake according to claim 3, wherein The side of the mounting flange away from the battery base is provided with an annular sealing groove, and an annular sealing ring is arranged in the annular sealing groove.

7. The built-in power supply type electromagnetic brake according to any one of claims 2 to 6, characterized by A positioning sleeve is sleeved on the first connecting screw for determining the axial distance between the mounting flange and the magnetic yoke, and the moving plate is provided with a hole for the positioning sleeve to pass through.

8. The built-in power supply type electromagnetic brake according to any one of claims 2 to 6, characterized by The two sides of the rotor are provided with friction plates.

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