Brake capable of eliminating axial movement

Abstract

The invention relates to a brake capable of eliminating axial movement, and belongs to the technical field of motor brakes. The brake comprises a fixed plate, a friction disc, a movable iron core, a static iron core and a guide column. Through cooperation of the friction disc and the shaft sleeve, the first elastic piece annularly arranged on the lower end face of the shaft sleeve and the coil arranged in the static iron core, when the brake is in an unlocking state, the movable iron core and the static iron core are attracted through electromagnetic force of the coil in the static iron core, and at the moment, the first elastic piece continuously applies pressure to the friction disc; therefore, the axial movement of the friction disc is eliminated, and the friction disc and the shaft sleeve rotate along with the motor shaft. The probability that the brake is completely unlocked is improved, and the risk that the friction disc axially moves when the brake is in the unlocking state is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of motor brakes, and in particular to a brake capable of eliminating axial movement. Background Art

[0002] The brake is a device used to slow down or stop a mechanism. It is a key device for safety assurance in mechanical systems. It can be used to lock the mechanical system in zero position, avoiding erroneous wandering or deflection of the mechanical system, or locking due to failure in an emergency, thereby preventing abnormal operation of the mechanical system.

[0003] However, when the existing brake is in the unlocked state, the friction disc is in a free state, resulting in axial movement. There is a risk of contact between the friction disc and the friction plate, which causes the motor to be affected by the friction resistance generated by the brake during operation, resulting in additional torque during the rotation of the motor, affecting the motor performance.

[0004] Therefore, in order to avoid the risk of contact between the friction disc and the friction plate when the brake is in the unlocked state and to increase the probability of the brake being completely unlocked, it is necessary to propose a solution to improve one or more problems existing in the above-mentioned related technical solutions.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] In an embodiment of the present application, a brake capable of eliminating axial movement is provided, the brake comprising:

[0007] A fixed plate, wherein a first friction member is disposed on an inner ring end surface of the fixed plate, and a plurality of mounting holes are disposed on an outer ring end surface of the fixed plate at equal intervals;

[0008] A friction disc, wherein the lower end surface of the outer ring of the friction disc is in contact with the upper end of the first friction member, one end of the inner side surface of the friction disc is matched with a shaft sleeve, and a first elastic member is arranged on the lower end surface of the shaft sleeve;

[0009] A moving iron core, wherein a second friction member matching the first friction member is disposed on the lower end surface of the outer ring of the moving iron core, the lower end of the second friction member is in contact with and connected to the upper end surface of the friction disk, the lower end surface of the inner ring of the moving iron core is connected to the upper end surface of the shaft sleeve, and a plurality of connecting holes are disposed on the outer ring end surface of the moving iron core at equal intervals, and the mounting holes are disposed correspondingly to the connecting holes one by one;

[0010] A static iron core, the static iron core comprising a static iron core body, and a plurality of mounting seats arranged at equal intervals on the outer side of the static iron core body, each of the mounting seats is respectively provided with a second elastic member, each of the mounting seats is a structure with an open lower end, the lower ends of all the second elastic members and the lower end surface of the static iron core body are respectively connected to the upper end surface of the moving iron core, and a coil is arranged in the static iron core body;

[0011] A guide column, one end of which is fixedly disposed in the mounting hole, and the other end of which passes through the connecting hole and is fixedly connected to the static iron core;

[0012] Wherein, the static iron core, the movable iron core, the friction disc, the shaft sleeve and the fixed plate are all annular and have a coaxial center hole, and the motor shaft is arranged in the coaxial center hole;

[0013] When the brake is in an unlocked state, there are gaps between the friction disk and both the first friction member and the second friction member.

[0014] In an exemplary embodiment of the present application, a first groove is arranged on the inner ring end surface of the fixed plate, and the lower end of the first friction member is arranged in the first groove.

[0015] In an exemplary embodiment of the present application, weight-reducing holes are respectively matched and arranged on the outer surface of the fixed plate on the same side as each of the mounting holes.

[0016] In an exemplary embodiment of the present application, the sleeve comprises:

[0017] Sleeve body: the sleeve body is connected to the lower end surface of the inner ring of the moving iron core, and one end of the inner side surface of the friction disk is inserted into the sleeve body;

[0018] A stopper is connected to the shaft sleeve body and is in contact with the inner side surface of the friction disk inserted into the shaft sleeve body.

[0019] In an exemplary embodiment of the present application, the first elastic member includes:

[0020] A first elastic member body, wherein the first elastic member body is disposed on the lower end surface of the shaft sleeve;

[0021] A plurality of elastic pressing plates are arranged at equal intervals on the outer surface of the first elastic member body, one end of each of the elastic pressing plates is respectively fastened to the first elastic member body, and the other end of each of the elastic pressing plates is respectively contacted and connected to the lower end surface of the friction disk.

[0022] In an exemplary embodiment of the present application, a second groove is arranged on the lower end surface of the outer ring of the moving iron core, and the upper end of the second friction member is arranged in the second groove.

[0023] In an exemplary embodiment of the present application, a potting material is injected into the static iron core body to fix the coil in the static iron core body.

[0024] In an exemplary embodiment of the present application, the static iron core also includes: a plurality of mounting ears arranged at equal intervals on the outer side surface of the static iron core, all of the mounting ears are in a first horizontal plane, all of the mounting seats are in a second horizontal plane, and the first horizontal plane and the second horizontal plane are different horizontal planes.

[0025] In an exemplary embodiment of the present application, when the brake is in a braking state, the second elastic member is used to apply a thrust to the moving iron core so that the second friction member contacts the friction disk, thereby realizing the braking function of the brake;

[0026] When the brake is in an unlocked state, the coil in the static iron core releases the electromagnetic force to attract the moving iron core and the static iron core. At this time, there are gaps between the friction disk and the first friction member and the second friction member.

[0027] In an exemplary embodiment of the present application, the gap ranges from 0.1 mm to 0.2 mm.

[0028] Beneficial effects:

[0029] The present application proposes a brake capable of eliminating axial movement, which has at least the following beneficial effects:

[0030] (1) The present application realizes that when the brake is in the unlocked state, the moving iron core and the static iron core are attracted by the electromagnetic force of the coil in the static iron core by matching the friction disk and the shaft sleeve, and the first elastic member is arranged on the lower end surface of the shaft sleeve, and the coil is arranged in the static iron core. At this time, the first elastic member is used to continuously apply pressure to the friction disk, and the friction disk is moved to the stopper of the shaft sleeve by the pressure of the first elastic member on the friction disk, thereby eliminating the axial movement of the friction disk, and making the friction disk and the shaft sleeve rotate together with the motor shaft, so that when the brake is in the unlocked state, the risk of axial movement of the friction disk can be avoided;

[0031] (2) By disposing a first friction member on the inner ring end surface of the fixed plate and a second friction member corresponding to the first friction member on the outer ring lower end surface of the moving iron core, when the brake is in the unlocked state, there is a gap between the friction plate and the two friction members. Since the motor shaft and the moving iron core are connected by a key, the friction resistance is prevented from being transmitted to the motor shaft, causing additional torque to be generated during the rotation of the motor, thereby affecting the motor performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A schematic diagram showing the structure of a brake capable of eliminating axial movement in an exemplary embodiment of the present application is shown;

[0034] Figure 2 A cross-sectional view showing a brake capable of eliminating axial play in an exemplary embodiment of the present application;

[0035] Figure 3 A schematic diagram showing the connection relationship among the friction disk, the shaft sleeve and the first elastic member in an exemplary embodiment of the present application is shown.

[0036] In the figure, 100, brake; 110, fixed plate; 111, first groove; 112, first friction member; 113, mounting hole; 114, weight reduction hole; 120, friction disc; 130, bushing; 131, bushing body; 132, stopper; 133, first elastic member; 1331, first elastic member body; 1332, elastic pressing plate; 140, moving iron core; 141, second groove; 142, second friction member; 143, connecting hole; 150, stationary iron core; 151, stationary iron core body; 1511, coil; 152, mounting seat; 1521, second elastic member; 153, mounting lug; 160, guide column; 170, coaxial center hole; 180, motor shaft. DETAILED DESCRIPTION

[0037] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0038] In addition, the accompanying drawings are only schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0039] In order to increase the probability of the brake 100 being completely unlocked and avoid the risk of the moving iron core 140 on the brake 100 having axial movement, this exemplary embodiment provides a brake 100 that can eliminate axial movement, such as Figure 1 and Figure 2 As shown, including:

[0040] A fixed plate 110, wherein a first friction member 112 is disposed on the inner end surface of the fixed plate 110, and a plurality of mounting holes 113 are disposed at equal intervals on the outer end surface of the fixed plate 110;

[0041] The friction disc 120, the lower end surface of the outer ring of the friction disc 120 is in contact with the upper end of the first friction member 112, one end of the inner side surface of the friction disc 120 is connected to the shaft sleeve 130, and the lower end surface of the shaft sleeve 130 is provided with a first elastic member 133;

[0042] The movable iron core 140 has a second friction member 142 arranged on the lower end surface of the outer ring of the movable iron core 140 and matching with the first friction member 112. The lower end of the second friction member 142 is in contact with the upper end surface of the friction plate 120. The lower end surface of the inner ring of the movable iron core 140 is connected to the upper end surface of the shaft sleeve 130. A plurality of connecting holes 143 are arranged at equal intervals on the end surface of the outer ring of the movable iron core 140. The mounting holes 113 are arranged correspondingly to the connecting holes 143 one by one.

[0043] The static iron core 150 includes a static iron core body 151, and a plurality of mounting seats 152 arranged at equal intervals on the outer side of the static iron core body 151, each mounting seat 152 is respectively provided with a second elastic member 1521, and each mounting seat 152 is a structure with an open lower end, and the lower ends of all the second elastic members 1521 and the lower end surface of the static iron core body 151 are respectively connected to the upper end surface of the moving iron core 140, and a coil 1511 is provided in the static iron core body 151;

[0044] A guide column 160, one end of which is fixedly disposed in the mounting hole 113, and the other end of which passes through the connecting hole 143 and is fixedly connected to the static iron core 150;

[0045] The static iron core 150, the moving iron core 140, the friction disc 120, the sleeve 130 and the fixed plate 110 are all annular and have a coaxial center hole 170, and a motor shaft 180 is disposed in the coaxial center hole 170;

[0046] When the brake 100 is in an unlocked state, there are gaps between the friction disk 120 and both the first friction member 112 and the second friction member 142 .

[0047] The embodiment of the present application provides a brake 100 that can eliminate axial movement, which has at least the following beneficial effects:

[0048] (1) The present application realizes that when the brake 100 is in the unlocked state, the moving iron core 140 and the static iron core 150 are attracted by the electromagnetic force of the coil 1511 in the static iron core 150 through the cooperation between the friction disc 120 and the shaft sleeve 130, and the first elastic member 133 is arranged on the lower end surface of the shaft sleeve 130, and the coil 1511 is arranged in the static iron core 150. At this time, the first elastic member 133 is used to continuously apply pressure to the friction disc 120, and the friction disc 120 is moved to the stop 132 of the shaft sleeve 130 by the pressure of the first elastic member 133 on the friction disc 120, thereby eliminating the axial movement of the friction disc 120, so that the friction disc 120 and the shaft sleeve 130 rotate together with the motor shaft 180, so that when the brake 100 is in the unlocked state, the risk of axial movement of the friction disc 120 can be avoided;

[0049] (2) By providing a first friction member 112 on the inner ring end surface of the fixed plate 110 and providing a second friction member 142 corresponding to the first friction member 112 on the outer ring lower end surface of the moving iron core 140, when the brake 100 is in the unlocked state, there is a gap between the friction plate 120 and the two friction members. Since the motor shaft 180 and the moving iron core 140 are connected by a key, the friction resistance is prevented from being transmitted to the motor shaft 180, which would cause additional torque to be generated during the rotation of the motor and affect the motor performance.

[0050] Next, a brake 100 capable of eliminating axial play proposed in this exemplary embodiment will be described in more detail.

[0051] In one embodiment, the position of the first friction member 112 is specifically defined. In this embodiment, a first groove 111 is provided on the inner ring end surface of the fixed plate 110, and the lower end of the first friction member 112 is fixedly provided in the first groove 111. The provision of the first groove 111 can further tighten the first friction member 112 on the fixed plate 110. In this embodiment, the first friction member 112 is preferably a first friction plate.

[0052] In one embodiment, a plurality of mounting holes 113 are arranged at equal intervals on the outer end surface of the fixed plate 110, which play the role of connecting the guide column 160. In this embodiment, a weight reduction hole 114 is arranged on the outer side surface of the fixed plate 110 next to each mounting hole 113, and the weight reduction hole 114 plays the role of weight reduction.

[0053] In one embodiment, Figure 3 As shown, the structure of the sleeve 130 is specifically designed. The sleeve 130 is annular and includes:

[0054] The annular sleeve body 131 is connected to the lower end surface of the inner ring of the moving iron core 140, and one end of the inner side surface of the friction disk 120 is inserted into the sleeve body 131;

[0055] The annular stopper 132 is tightly connected to the sleeve body 131 and is in contact with the inner side surface of the friction disk 120 inserted into the sleeve body 131 .

[0056] In one embodiment, the first elastic member 133 is specifically described. The first elastic member 133 includes:

[0057] A first elastic member body 1331, the first elastic member body 1331 is disposed on the lower end surface of the sleeve 130;

[0058] A plurality of elastic pressing plates 1332 are arranged at equal intervals on the outer surface of the first elastic member body 1331, one end of each elastic pressing plate 1332 is respectively fastened to the first elastic member body 1331, and the other end of each elastic pressing plate 1332 is respectively contacted and connected to the lower end surface of the friction disk 120.

[0059] In one embodiment, the position of the second friction member 142 is specifically defined. In this embodiment, a second groove 141 is provided on the lower end surface of the outer ring of the moving iron core 140, and the upper end of the second friction member 142 is fixedly provided in the second groove 141. The provision of the second groove 141 can further tighten the second friction member 142 on the moving iron core 140. In this embodiment, the second friction member 142 is preferably a second friction plate. In this way, the position of the friction disc 120 is located between the first friction member 112 and the second friction member 142. Since one end of the inner side surface of the friction disc 120 is matched and connected with the shaft sleeve 130, in this embodiment, the inner spline on the friction disc 120 is connected with the outer gear on the shaft sleeve 130, so that the friction disc 120 can only generate axial displacement with the shaft sleeve 130. At the same time, when the brake 100 is in the unlocked state, a certain gap exists between the friction disc 120 and the first friction member 112 and the second friction member 142. In this embodiment, the range of the gap is between 0.1 mm and 0.2 mm, preferably 0.15 mm. The gap is set within the range because if the gap is too large, it will affect the magnetic circuit, causing the magnetic attraction to decrease, and the friction disk 120 cannot resist the elastic force of the second elastic member 1521; if the gap is too small, when the brake 100 is in the unlocked state, it is easy to cause the friction disk 120 to contact the first friction member 112 and / or the second friction member 142, affecting the unlocking process. In this embodiment, setting the gap within the range can just avoid these two effects.

[0060] Furthermore, the first elastic member 133 is used to relatively fix the positions of the friction disk 120 and the shaft sleeve 130 , thereby preventing the friction disk 120 from being in a free state when the brake 100 is unlocked, thereby preventing the friction disk 120 from being in an axial state and causing axial movement.

[0061] Furthermore, the shaft sleeve 130 can be fixed to the motor shaft 180 by key connection, thereby achieving fixed installation of the brake 100 and the motor.

[0062] Furthermore, by annularly disposing a first friction member 112 on the inner ring end face of the fixed plate 110, and annularly disposing a second friction member 142 corresponding to the first friction member 112 on the outer ring lower end face of the moving iron core 140, when the brake 100 is in the unlocked state, there is a gap between the friction plate 120 and the two friction members. Since the motor shaft 180 and the moving iron core 140 are connected by a key, the generated friction resistance is avoided from being transmitted to the motor shaft 180, causing additional torque to be generated during the rotation of the motor, thereby affecting the motor performance.

[0063] In one embodiment, the static iron core 150 includes a static iron core body 151, a plurality of mounting seats 152, and a plurality of mounting ears 153. A coil 1511 is installed in the static iron core body 151. In this embodiment, the coil 1511 is fixed in the static iron core body 151 by injecting potting material. The injection of the potting material allows the coil 1511 to be firmly fixed in the static iron core 150, so that it will not fall off, and can isolate the entry of foreign substances.

[0064] Furthermore, the arrangement of the coil 1511 enables the moving iron core 140 to be attracted to the static iron core 150 by the electromagnetic force of the coil 1511 in the static iron core 150 when the brake 100 is in the unlocked state, and at this time, the first elastic member 133 is used to continuously apply pressure to the friction disc 120, and the friction disc 120 is moved to the stop 132 of the sleeve 130 by the pressure of the first elastic member 133 on the friction disc 120, thereby eliminating the axial movement of the friction disc 120, and making the friction disc 120 and the sleeve 130 rotate together with the motor shaft 180, so that when the brake 100 is in the unlocked state, the risk of axial movement of the friction disc 120 can be avoided. In this embodiment, the first elastic member 133 is preferably a spring sheet.

[0065] Furthermore, a plurality of mounting seats 152 are arranged at equal intervals on the outer surface of the static iron core 150, and a second elastic member 1521 is arranged in each mounting seat 152. The function of the second elastic member 1521 is to generate a thrust on the moving iron core 140 when the brake 100 is in the power-off braking state, so that the second friction member 142 contacts the friction disk 120 to generate a braking force. The brake 100 has no function when it is in the unlocked state. The second elastic member 1521 of this embodiment is preferably a spring.

[0066] Furthermore, a plurality of mounting ears 153 are evenly spaced on the outer surface of the static iron core 150. All mounting ears 153 are located in a first horizontal plane, and all mounting seats 152 are located in a second horizontal plane, and the first horizontal plane and the second horizontal plane are different horizontal planes. The plurality of mounting ears 153 can fix the static iron core 150 to the housing of the motor, ensuring that the static iron core 150 does not move.

[0067] In one embodiment, the working principle of a brake 100 capable of eliminating axial movement proposed in the present application is described in detail.

[0068] When the brake 100 is in a braking state, the second elastic member 1521 is used to apply a thrust to the moving iron core 140, so that the second friction member 142 contacts the friction disk 120, thereby realizing the braking function of the brake 100;

[0069] When the brake 100 is in the unlocked state, the coil 1511 in the static iron core 150 releases the electromagnetic force to attract the moving iron core 140 and the static iron core 150 . At this time, there are gaps between the friction disc 120 and the first friction member 112 and the second friction member 142 .

[0070] In one embodiment, one end of the guide post 160 is fixedly disposed in the mounting hole 113, and the other end of the guide post 160 passes through the connection hole 143 and is fixedly connected to the static iron core 150. The guide post 160 is fixedly connected to the static iron core 150, and the two can be fastened together by screws.

[0071] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0073] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and these modifications or substitutions should be included in the protection scope of the present application.

[0074] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application.

Claims

1. A brake capable of eliminating axial movement, characterized in that: The brake includes: A fixed plate, wherein a first friction member is disposed on an inner ring end surface of the fixed plate, and a plurality of mounting holes are disposed on an outer ring end surface of the fixed plate at equal intervals; A friction disc, wherein the lower end surface of the outer ring of the friction disc is in contact with the upper end of the first friction member, one end of the inner side surface of the friction disc is matched with a shaft sleeve, and a first elastic member is arranged on the lower end surface of the shaft sleeve; A moving iron core, wherein a second friction member matching the first friction member is disposed on the lower end surface of the outer ring of the moving iron core, the lower end of the second friction member is in contact with and connected to the upper end surface of the friction disk, the lower end surface of the inner ring of the moving iron core is connected to the upper end surface of the shaft sleeve, and a plurality of connecting holes are disposed on the outer ring end surface of the moving iron core at equal intervals, and the mounting holes are disposed correspondingly to the connecting holes one by one; A static iron core, the static iron core comprising a static iron core body, and a plurality of mounting seats arranged at equal intervals on the outer side of the static iron core body, each of the mounting seats is respectively provided with a second elastic member, each of the mounting seats is a structure with an open lower end, the lower ends of all the second elastic members and the lower end surface of the static iron core body are respectively connected to the upper end surface of the moving iron core, and a coil is arranged in the static iron core body; A guide column, one end of which is fixedly disposed in the mounting hole, and the other end of which passes through the connecting hole and is fixedly connected to the static iron core; Wherein, the static iron core, the movable iron core, the friction disc, the shaft sleeve and the fixed plate are all annular and have a coaxial center hole, and the motor shaft is arranged in the coaxial center hole; When the brake is in an unlocked state, there are gaps between the friction disk and both the first friction member and the second friction member.

2. The brake capable of eliminating axial movement according to claim 1, characterized in that: A first groove is arranged on the inner ring end surface of the fixed plate, and the lower end of the first friction member is arranged in the first groove.

3. The brake capable of eliminating axial movement according to claim 2, characterized in that: Weight reduction holes are matched and arranged on the outer side of the fixed plate on the same side as each of the mounting holes.

4. The brake capable of eliminating axial movement according to claim 1, characterized in that: The sleeve comprises: Sleeve body: the sleeve body is connected to the lower end surface of the inner ring of the moving iron core, and one end of the inner side surface of the friction disk is inserted into the sleeve body; A stopper is connected to the shaft sleeve body and is in contact with the inner side surface of the friction disk inserted into the shaft sleeve body.

5. The brake capable of eliminating axial movement according to claim 4, characterized in that: The first elastic member comprises: A first elastic member body, wherein the first elastic member body is disposed on the lower end surface of the shaft sleeve; A plurality of elastic pressing plates are arranged at equal intervals on the outer surface of the first elastic member body, one end of each of the elastic pressing plates is respectively fastened to the first elastic member body, and the other end of each of the elastic pressing plates is respectively contacted and connected to the lower end surface of the friction disk.

6. The brake capable of eliminating axial movement according to claim 1, characterized in that: A second groove is arranged on the lower end surface of the outer ring of the moving iron core, and the upper end of the second friction member is arranged in the second groove.

7. The brake capable of eliminating axial movement according to claim 1, characterized in that: A potting material is injected into the static iron core body to fix the coil in the static iron core body.

8. The brake capable of eliminating axial movement according to claim 1, characterized in that: The static iron core also includes: a plurality of mounting ears arranged at equal intervals on the outer side surface of the static iron core, all of the mounting ears are in a first horizontal plane, all of the mounting seats are in a second horizontal plane, and the first horizontal plane and the second horizontal plane are different horizontal planes.

9. The brake capable of eliminating axial movement according to any one of claims 1 to 8, characterized in that: When the brake is in a braking state, the second elastic member is used to apply a thrust to the moving iron core, so that the second friction member contacts the friction disk, thereby realizing the braking function of the brake; When the brake is in an unlocked state, the coil in the static iron core releases the electromagnetic force to attract the moving iron core and the static iron core. At this time, there are gaps between the friction disk and the first friction member and the second friction member.

10. The brake capable of eliminating axial movement according to claim 9, characterized in that: The gap ranges from 0.1 mm to 0.2 mm.

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