Double-end braking electromagnetic brake

Abstract

The utility model relates to the technical field of brakes, and provides a double-end braking electromagnetic brake which comprises a magnet yoke and two sets of braking assemblies coaxially arranged at the two ends of the magnet yoke, annular grooves are formed in the two ends of the magnet yoke, coils are arranged in the annular grooves, and each braking assembly comprises a flange, a rotor and a movable plate which are sequentially arranged in the direction close to the magnet yoke. The flange is fixedly connected with the magnet yoke; elastic pieces are arranged at the two ends of the magnet yoke, the rotor is used for being connected with a power output shaft, and when the coil is in a power-off state, the two movable plates abut against the rotor under the action of elasticity of the elastic pieces to achieve braking; when the coil is powered on, the magnet yoke separates the two movable plates from the rotor, and braking is relieved. According to the utility model, the two coils share one magnet yoke, and the two ends of the magnet yoke are provided with the brake assemblies, so that the purpose of double-end braking is realized through one brake, and compared with the traditional mode, the volume is reduced, and the problem that two brakes are difficult to stably and accurately connect is also avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake technology field, specifically, relate to a double -end brake electromagnetic brake. BACKGROUND

[0002] The unique of double -end brake electromagnetic brake is that both ends can brake, reach the purpose of double braking torque. SUMMARY

[0003] The utility model discloses a double -end brake electromagnetic brake to solve the above -mentioned defects of prior art.

[0004] The utility model discloses the following technical scheme realizes:

[0005] A double -end brake electromagnetic brake, including the yoke and the coaxial setting two groups of brake components in the both ends of yoke, both ends of yoke are equipped with annular recess, and the coil is equipped in annular recess, and brake component includes the flange, rotor and dynamic board that are arranged in order along the direction close to yoke, and the flange is fixedly connected with yoke;

[0006] Both ends of yoke are equipped with elastic part, and rotor is used for connecting power output shaft, and under the coil power -off state, two dynamic boards are tightly pressed against rotor under the elasticity of elastic part, and realize braking, when the coil is electrified, yoke will separate two dynamic boards and make it with rotor, and release brake.

[0007] Optionally, both sides of the rotor are equipped with the friction plate.

[0008] Optionally, both sides of the rotor are equipped with the positioning step for realizing the positioning of the friction plate.

[0009] Optionally, the flange is connected with the yoke through the connecting screw, and the positioning sleeve for limiting the distance between the flange and the yoke is sleeved on the connecting screw.

[0010] Optionally, the elastic part is a spring, and the both ends of the yoke are equipped with the blind hole for installing the spring.

[0011] Optionally, the dust cover is arranged between the flange and the yoke for closing the gap between the two.

[0012] Optionally, the dust cover is equipped with the annular clamping block at both ends, and the outer side of the flange and the outer side of the yoke are equipped with the annular clamping groove matched with the annular clamping block.

[0013] Optionally, the rotor has the spline inner hole, and the spline shaft sleeve is connected with the spline inner hole.

[0014] The technical scheme of the utility model has at least the following advantages and beneficial effects:

[0015] 1. In the utility model, two coils share one magnetic yoke, and brake assemblies are arranged at both ends of the magnetic yoke, so that the purpose of double-end braking is realized by one brake, compared with the traditional mode, the volume is reduced, and the problem of difficult stable and accurate connection of two brakes is avoided.

[0016] 2. In the utility model, two coils share one magnetic yoke, in the middle region of the magnetic yoke, the magnetic lines appear the situation of coincidence and superposition, the magnetic line density of the part is greatly improved, and then the attraction rate is effectively accelerated, and the rapid release of the brake component is realized.

[0017] 3. In the utility model, the brake points are arranged at both ends of the magnetic yoke, and the both ends keep a certain interval distance, the layout can solve the problem of local excessive concentration of braking force on the power output shaft, and effectively avoid the stress concentration phenomenon caused by force concentration. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structure diagram of a double-end brake electromagnetic brake provided by the utility model is shown in the figure.

[0019] Figure 2 It is an axial view of the magnetic yoke.

[0020] Figure 3 It is an A-A sectional view in Figure 2

[0021] Reference signs: 1-magnetic yoke, 101-annular groove, 102-connection threaded hole, 103-through hole, 2-coil, 3-flange, 4-rotor, 5-moving plate, 6-elastic member, 7-friction plate, 8-connection screw, 9-positioning sleeve, 10-O-shaped sealing ring, 11-mounting screw, 12-dust cover, 13-spline shaft sleeve. DETAILED DESCRIPTION

[0022] Reference Figures 1-3 A double-end brake electromagnetic brake, comprising a magnetic yoke 1 and two groups of brake assemblies coaxially arranged at both ends of the magnetic yoke 1.

[0023] Both ends of the magnetic yoke 1 are provided with annular grooves 101, the annular grooves 101 are provided with coils 2, and the magnetic yoke 1 is integrally formed, facilitating processing. On this basis, that is, two coils 2 share one magnetic yoke 1, in the middle region of the magnetic yoke 1, the magnetic lines appear the situation of coincidence and superposition, the magnetic line density of the part is greatly improved, and then the attraction rate is effectively accelerated, and the rapid release of the brake component is realized.

[0024] ​The brake assembly comprises, in sequence from the direction close to the magnetic yoke 1, a flange 3, a rotor 4 and a moving plate 5, the flange 3 is fixedly connected with the magnetic yoke 1, and the rotor 4 is used for connecting a power output shaft, and the connecting mode is not limited. As an option, in the embodiment, the rotor 4 has a spline inner hole, the spline inner hole is connected with a spline shaft sleeve 13, and further, the spline shaft sleeve 13 and the rotor 4 are sealed through an O-shaped sealing ring 10. In actual application, the spline shaft sleeve 13 is connected (for example, through a connecting key, a radial connecting screw 8 or the like) with the power output shaft.

[0025] The magnetic yoke 1 is provided with elastic members 6 at both ends, as an option, the elastic members 6 are springs, the magnetic yoke 1 is provided with blind holes for mounting the springs, so as to avoid occupying axial space by the springs. In the de-energized state of the coil 2, the two moving plates 5 are abutted against the rotor 4 under the elastic force of the elastic members 6, so as to realize braking; when the coil 2 is energized, the magnetic yoke 1 separates the two moving plates 5 and the rotor 4, so as to release the braking.

[0026] It can be seen that the utility model realizes the purpose of double-end braking through one brake by the two coils 2 sharing one magnetic yoke 1 and the brake assemblies arranged at both ends of the magnetic yoke 1, compared with the traditional mode, the volume is reduced, and the problem of difficult and stable precise connection of two brakes is avoided; and the braking points are arranged at both ends of the magnetic yoke 1, and the both ends keep a certain interval distance, the layout can solve the problem of local excessive concentration of braking force on the power output shaft, and effectively avoid the stress concentration phenomenon caused by force concentration.

[0027] In the embodiment, the rotor 4 is provided with friction plates 7 at both sides, for contacting the flange 3 and the moving plate 5, so as to generate friction force. The fixing mode of the friction plates 7 is not limited, for example, adhesion. Further, the rotor 4 is provided with positioning steps at both sides, for realizing positioning of the friction plates 7.

[0028] As an option, in the embodiment, the connection mode of the flange 3 and the magnetic yoke 1 is as follows, the flange 3 and the magnetic yoke 1 are connected through a connecting screw 8, a positioning sleeve 9 for limiting the distance between the flange 3 and the magnetic yoke 1 is sleeved on the connecting screw 8, that is, a connecting threaded hole 102 is arranged on the magnetic yoke 1, the connecting screw 8 passes through the flange 3 and is connected with the connecting threaded hole 102, and the connecting screw 8 is preferably a cross slot screw. It is worth mentioning that the two flanges 3 are independently connected through one connecting screw 8 respectively, so as to facilitate flexible use of the brake according to actual working condition requirements, when large torque output is required, the two sides of the brake can be simultaneously operated; if only small torque is required, the connecting screw 8 on one side is removed and the spline rotor 4 is taken out, so as to realize the purpose of stopping work of the side.

[0029] Further, the dust cover 12 is arranged between the flange 3 and the yoke 1 in the embodiment, which is used to close the gap between the flange 3 and the yoke 1 and prevent dust. Alternatively, the dust cover 12 is installed as follows: the dust cover 12 is provided with annular clamping blocks at two ends, the flange 3 and the yoke 1 are provided with annular clamping grooves matched with the annular clamping blocks. It is easy to understand that the dust cover 12 is usually made of plastic and has a certain elasticity, and the dust cover 12 can be installed by clamping the annular clamping blocks into the annular clamping grooves.

[0030] In addition, the yoke 1 and the moving plate 5 are provided with through holes 103 in the embodiment, and the mounting screws 11 are arranged in the through holes 103. The mounting screws 11 are preferably internal hexagonal screws. In practical application, the brake is installed in the use occasion through the mounting screws 11. Further, the flange 3 is provided with a relief hole for avoiding the head of the mounting screw 11, and the diameter of the relief hole is greater than the diameter of the head of the mounting screw 11, so that the mounting screw 11 does not affect the disassembly of the flange 3.

[0031] The preferred embodiments of the utility model are only 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. A dual end-braking electromagnetic brake, characterized by, The brake assembly comprises a magnetic yoke and two groups of brake assemblies coaxially arranged at both ends of the magnetic yoke, the two ends of the magnetic yoke are provided with annular grooves, coils are arranged in the annular grooves, the brake assembly comprises a flange, a rotor and a moving plate arranged in sequence along the direction close to the magnetic yoke, the flange is fixedly connected with the magnetic yoke; The two ends of the magnetic yoke are provided with elastic members, the rotor is used for connecting a power output shaft, under the condition that the coils are powered off, the two moving plates are abutted against the rotor under the elastic force of the elastic members to realize braking; when the coils are powered on, the magnetic yoke separates the two moving plates from the rotor to release the braking.

2. The dual end detent electromagnetic brake of claim 1, wherein, The two sides of the rotor are provided with friction plates.

3. The dual end detent electromagnetic brake of claim 2, wherein, The two sides of the rotor are provided with positioning steps for positioning the friction plates.

4. The dual end detent electromagnetic brake of claim 1, wherein, The flange and the magnetic yoke are connected through connecting screws, positioning sleeves for limiting the distance between the flange and the magnetic yoke are arranged on the connecting screws.

5. Double-ended electromagnetic brake according to any one of claims 1-4, characterized in that The elastic members are springs, and the two ends of the magnetic yoke are provided with blind holes for mounting the springs.

6. Double-ended electromagnetic brake according to any one of claims 1-4, characterized in that A dust cover is arranged between the flange and the magnetic yoke for closing the gap therebetween.

7. The dual end detent electromagnetic brake of claim 6, wherein, The two ends of the dust cover are provided with annular clamping blocks, the outer side of the flange and the outer side of the magnetic yoke are provided with annular clamping grooves matched with the annular clamping blocks.

8. Double ended electromagnetic brake according to any one of claims 1-4, characterized in that The rotor has a spline inner hole, and a spline shaft sleeve is connected to the spline inner hole.

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