CN211003498U

CN211003498U - Gripping device

Info

Publication number: CN211003498U
Application number: CN201921978075.1U
Authority: CN
Inventors: 李建龙; 陈亮; 刘云云; 王伟
Original assignee: Mesnac Co Ltd; Qingdao Mesnac Electromechanical Engineering Co Ltd
Current assignee: Mesnac Co Ltd; Qingdao Mesnac Electromechanical Engineering Co Ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-07-14
Anticipated expiration: 2029-11-15

Abstract

The utility model provides a grabbing device for snatch the steel ring, grabbing device includes: mounting a disc; the clamping assemblies are arranged on one side of the mounting disc at intervals along the circumferential direction of the mounting disc, and each clamping assembly is movably arranged along the radial direction of the mounting disc; the driving assembly is arranged on the mounting disc and used for driving the clamping assembly to move; the driving assembly drives the clamping assemblies to move along the radial direction of the mounting disc simultaneously through the connecting assembly so as to clamp or loosen the steel ring. The utility model discloses a grabbing device has solved grabbing device among the prior art when snatching the steel wire winding, and the position of steel wire winding is uncertain, causes the unsafe problem in location to the steel wire winding in follow-up man-hour.

Description

Gripping device

Technical Field

The utility model relates to a rubber machinery particularly, relates to a grabbing device.

Background

The bead ring is used for increasing the strength and rigidity of a tire bead in a tire bead apex product, and the production process is that the bead ring is wound and formed on a bead ring winding machine, is manually placed and stored, and is conveyed to the next procedure for production.

Bead ring grabbing device is when snatching the bead ring, need a plurality of outer lane contact to the bead ring simultaneously and snatch, the power of each grabbing point should the size unanimity just can guarantee that the position of bead ring on grabbing device is unified all the time, and bead ring grabbing device among the prior art can not guarantee a plurality of points simultaneously and the outer lane contact of bead ring, and can't satisfy each contact point and give the power size unanimity of bead ring, this just leads to the position of bead ring on grabbing device to differ, is difficult to guarantee subsequent location.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a gripping device to solve the gripping device in the prior art and when gripping the bead ring, the position of the bead ring is uncertain, causing the inaccurate problem of location to the bead ring in the follow-up processing.

In order to achieve the above object, the utility model provides a grabbing device for snatch the steel ring, grabbing device includes: mounting a disc; the clamping assemblies are arranged on one side of the mounting disc at intervals along the circumferential direction of the mounting disc, and each clamping assembly is movably arranged along the radial direction of the mounting disc; the driving assembly is arranged on the mounting disc and used for driving the clamping assembly to move; the driving assembly drives the clamping assemblies to move along the radial direction of the mounting disc simultaneously through the connecting assembly so as to clamp or loosen the steel ring.

Further, the grabbing device still includes: the guide rail assemblies are arranged on the mounting disc in a one-to-one correspondence manner and extend along the radial direction of the mounting disc; the sliding seats are arranged in one-to-one correspondence with the guide rail assemblies, and each sliding seat is movably arranged on the corresponding guide rail assembly so as to move along the extension direction of the guide rail assembly; wherein, clamping component sets up on the sliding seat, and coupling assembling is connected with the sliding seat to it moves along guide rail assembly to drive corresponding clamping component through the sliding seat.

Further, the clamping assembly comprises: the clamping wheel is rotatably arranged on the sliding seat and is used for being attached to the outer wall of the steel ring.

Further, the connection assembly includes: the rotating mechanism is connected with the driving assembly and is driven by the driving assembly to rotate; the connecting rods are arranged in one-to-one correspondence with the clamping assemblies and are rotatably connected with the corresponding clamping assemblies; wherein, a plurality of connecting rods are respectively and rotatably connected with the rotating mechanism, and the rotating mechanism is connected with each connecting rod to drive each clamping component to move correspondingly.

Further, the rotation mechanism includes: the driving assembly is in driving connection with the rotating shaft; the rotating shafts are arranged at one ends of the rotating shafts at intervals, the rotating shafts are arranged in one-to-one correspondence with the connecting rods, and the connecting rods are rotatably connected with the corresponding rotating shafts.

Furthermore, the connecting rod is provided with a first connecting part and a second connecting part, the connecting rod is rotatably connected with the rotating mechanism through the first connecting part, and the connecting rod is rotatably connected with the clamping assembly through the second connecting part; the top of the first connecting portion is located in a first plane, the top of the second connecting portion is located in a second plane, and the first plane and the second plane are distributed in the direction perpendicular to the mounting disc.

Further, the drive assembly comprises a drive cylinder, the drive cylinder is rotatably arranged on the mounting disc, and the drive cylinder is rotatably connected with the rotating mechanism to drive the rotating mechanism to rotate.

Further, the rotation mechanism includes: the driving arm is rotatably connected with one end of the driving cylinder; the rotating shaft is connected with one end of the driving arm far away from the driving cylinder; wherein, the driving cylinder is connected with the driving arm to drive the rotating shaft to rotate.

Furthermore, be equipped with the guiding hole on the mounting disc, drive assembly includes the connecting axle, and the connecting axle can insert to establish and set up in the guiding hole, drives actuating cylinder and actuating arm and sets up the both sides at the mounting disc relatively, drives actuating cylinder and passes through the connecting axle and be connected with the actuating arm.

Further, the grabbing device still includes: the electromagnet assembly is arranged on the mounting disc, so that the steel ring is positioned on the mounting disc under the magnetic action of the electromagnet assembly.

Use the technical scheme of the utility model grabbing device mainly be applied to and snatch the ring structure, this grabbing device includes a plurality of clamping components, a plurality of clamping components equipartitions are on the mounting disc, the mounting disc is the circular shape dish, drive assembly can move with the centre of a circle that presss from both sides tight steel ring or drive each clamping component and keep away from the mounting disc simultaneously through the foretell each clamping component of coupling assembling drive, this application has realized the purpose that a plurality of clamping components of drive simultaneously remove, thereby make a plurality of clamping components butt simultaneously in the different positions of steel ring, in order to fix a position the steel ring, the steel ring just in time is located the centre of a circle of mounting disc this moment, accurate positioning has been realized.

Use the technical scheme of the utility model the grabbing device be applicable to snatching of the steel wire winding of all specifications.

Use the technical scheme of the utility model's grabbing device has realized the automatic feed of steel wire winding, avoids artifical work, simplifies the structure, reduce cost.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a gripping device according to the invention;

fig. 2 shows a top view of an embodiment of the gripping device of the invention;

fig. 3 shows a cross-sectional view of an embodiment of the gripping device of the invention.

Wherein the figures include the following reference numerals:

60. mounting a disc; 61. a guide rail assembly; 62. a sliding seat; 63. a guide hole; 64. an electromagnet assembly; 70. a clamping assembly; 71. clamping the wheel; 80. a drive assembly; 81. a driving cylinder; 90. a connecting assembly; 91. a rotation mechanism; 911. a rotating shaft; 912. a rotating arm; 913. a drive arm; 92. a connecting rod; 921. a first connection portion; 922. a second connecting portion.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The utility model provides a grabbing device for snatch the steel ring, please refer to fig. 1 to 3, grabbing device includes: a mounting plate 60; a plurality of clamping assemblies 70, the plurality of clamping assemblies 70 being arranged at intervals along the circumferential direction of the mounting disk 60 on one side of the mounting disk 60, each clamping assembly 70 being movably arranged along the radial direction of the mounting disk 60; a driving assembly 80, wherein the driving assembly 80 is arranged on the mounting plate 60 and is used for driving the clamping assembly 70 to move; and the connecting assembly 90, the driving assembly 80 and the connecting assembly 90 are connected, and the connecting assembly 90 is connected with each of the plurality of clamping assemblies 70, wherein the driving assembly 80 simultaneously drives the plurality of clamping assemblies 70 to move along the radial direction of the mounting disc 60 through the connecting assembly 90 so as to clamp or release the steel ring.

The utility model provides a grabbing device mainly is applied to and snatchs the ring structure, this grabbing device includes a plurality of clamping components 70, a plurality of clamping components 70 equipartitions are on mounting disc 60, mounting disc 60 is the circular shape dish, drive assembly 80 can drive foretell each clamping component of each through coupling assembling 90 and be close to the centre of a circle of mounting disc simultaneously and remove with the centre of a circle of pressing from both sides tight steel ring or driving each clamping component and keep away from the mounting disc simultaneously and remove with the release steel ring, this application has realized the purpose that a plurality of clamping components of drive simultaneously removed, thereby make a plurality of clamping components butt different positions at the steel ring simultaneously, in order to fix a position the steel ring, the steel ring just in time is located the centre of a circle of mounting disc, accurate positioning has.

Preferably, the plurality of clamping assemblies is three, and the three clamping assemblies are arranged on the mounting plate at intervals of 120 degrees.

The grabbing device still includes: the guide rail assemblies 61 are arranged on the mounting disc 60, the guide rail assemblies 61 are arranged in one-to-one correspondence with the clamping assemblies 70, and the guide rail assemblies 61 extend along the radial direction of the mounting disc 60; a plurality of sliding seats 62, the plurality of sliding seats 62 being disposed in one-to-one correspondence with the plurality of rail assemblies 61, each sliding seat 62 being movably disposed on a corresponding rail assembly 61 to move in an extending direction of the rail assembly 61; wherein the clamping assembly 70 is disposed on the sliding seat 62, and the connecting assembly 90 is connected to the sliding seat 62 to move the clamping assembly 70 along the rail assembly 61 via the sliding seat 62.

As shown in fig. 1 and 2, in the present embodiment, a plurality of rail assemblies are provided on the mounting plate, a sliding seat 62 is correspondingly provided on each rail assembly, and the clamping assembly 70 is movably provided on the rail by the sliding seat to move along the extending direction of the rail assembly.

The clamping assembly 70 includes: the clamping wheel 71, the clamping wheel 71 is rotatably arranged on the sliding seat 62, so as to be attached to the outer wall of the steel ring.

Preferably, clamping component 70 still is equipped with the location axle, and card wheel 71 rotationally overlaps establishes on the location axle to the realization can guarantee with the rotatable contact of steel ring that the card wheel can not cause the damage to the steel ring when the butt steel ring, also can not squashed or squash the steel ring, can also prevent long-time use back, card wheel one end by the problem of grinding.

Preferably, the clamping wheel is made of elastic materials, the connection is reliable, and the steel ring is not damaged.

The connecting assembly 90 includes: the rotating mechanism 91, the rotating mechanism 91 is connected with the driving assembly 80 to rotate under the driving of the driving assembly 80; a plurality of connecting rods 92, the plurality of connecting rods 92 being disposed in one-to-one correspondence with the plurality of clamping assemblies 70, the connecting rods 92 being rotatably connected with the respective clamping assemblies 70; wherein, a plurality of connecting rods 92 are respectively rotatably connected with the rotating mechanism 91, and the rotating mechanism 91 is connected with each connecting rod 92 to drive each clamping assembly 70 to move correspondingly. The rotation mechanism 91 includes: the rotating shaft 911, the driving component 80 is in driving connection with the rotating shaft 911; a plurality of rotation arms 912, a plurality of rotation arms 912 disposed at one end of the rotation shaft 911 at intervals, a plurality of rotation arms 912 disposed in one-to-one correspondence with the plurality of connection rods 92, and the connection rods 92 rotatably connected with the respective rotation arms 912.

As shown in fig. 2 and 3, the connecting assembly 90 in this embodiment includes a rotating mechanism 91 located at the center of the mounting plate and connecting rods 92 for connecting with a plurality of clamping assemblies, one connecting rod corresponds to one clamping assembly, the rotating mechanism 91 includes a rotating arm 912 and a rotating shaft 911, the rotating shaft is driven by a driving assembly to rotate, the rotating arms are arranged at the upper end of the rotating shaft at intervals, and the rotating shaft drives the rotating arms to rotate simultaneously, so as to drive the clamping assemblies to move along the guide of the guide rail assembly through the connecting rods.

The connecting rod 92 has a first connecting portion 921 and a second connecting portion 922, the connecting rod 92 is rotatably connected with the rotating mechanism 91 through the first connecting portion 921, and the connecting rod 92 is rotatably connected with the clamping assembly 70 through the second connecting portion 922; the top of the first connection portion 921 is located in a first plane, the top of the second connection portion 922 is located in a second plane, and the first plane and the second plane are distributed along a direction perpendicular to the mounting plate 60.

As shown in fig. 1, the connecting rod 92 in this embodiment is a Z-shaped plate structure, and in a direction perpendicular to the disk surface of the mounting disk, a distance between the top surface of the first connecting portion 921 and the disk surface of the mounting disk is smaller than a distance between the top surface of the second connecting portion 922 and the disk surface of the mounting disk, and the top surfaces of the first connecting portion and the second connecting portion are both planar and parallel to each other and do not overlap with each other, so as to adapt to a height difference between the clamping assembly and the rotating mechanism.

The driving assembly 80 comprises a driving cylinder 81, the driving cylinder 81 is rotatably disposed on the mounting plate 60, and the driving cylinder 81 is rotatably connected with the rotating mechanism 91 to drive the rotating mechanism 91 to rotate. The rotation mechanism 91 includes: a driving arm 913, the driving cylinder 81 being rotatably connected to one end of the driving arm 913; the rotating shaft 911 is connected with one end of the driving arm 913, which is far away from the driving cylinder 81; wherein, the driving cylinder 81 is connected with the driving arm 913 to drive the rotation shaft 911 to rotate. Be equipped with guiding hole 63 on the mounting disc 60, drive assembly 80 includes the connecting axle, and the connecting axle can insert to establish in guiding hole 63, and drive cylinder 81 and actuating arm 913 set up in the both sides of mounting disc 60 relatively, and drive cylinder 81 passes through the connecting axle and is connected with actuating arm 913.

Drive assembly 80 in this embodiment selects to drive the actuating cylinder, grabbing device still includes the bolt, as shown in fig. 1, it passes through the bolt and is connected with the mounting disc to drive actuating cylinder, the one end and the bolt that drive actuating cylinder rotationally are connected, the other end that drives actuating cylinder is connected with rotary mechanism's actuating arm 913's one end through a connecting axle, it sets up the bottom at the mounting disc to drive actuating cylinder, the actuating arm sets up the top of mounting disc, and be connected with the top of pivot, it passes through the connecting axle and drives the pivot rotation with the actuating arm to drive actuating cylinder, the connecting axle removes in the guiding range and the guiding distance of guiding hole, the guiding hole is the arc hole, thereby pivot swing.

The grabbing device still includes: and the electromagnet assembly 64, the electromagnet assembly 64 is arranged on the mounting plate 60, so that the steel ring is positioned on the mounting plate under the magnetic action of the electromagnet assembly.

Preferably, the electromagnet assembly 64 includes two electromagnets, and after the electromagnets are powered on, the electromagnets attract the steel ring close to the mounting plate under the action of the magnetic force of the electromagnets, so that the steel ring is prevented from shaking back and forth when placed on the mounting plate, and the steel ring is not mounted in place.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the utility model discloses a grabbing device has realized the automatic feed of steel wire winding, avoids artifical work, simplifies the structure, and reduce cost reaches and uses a steel ring grabbing device can be applicable to the steel wire winding of all specifications. Is suitable for the field of triangular glue.

The utility model provides a novel steel ring grabbing device suitable for bead filler field realizes adapting to all steel bead filler steel wire winding with one set of device. The sliding block seat is connected with the clamping wheel and moves radially along the guide rail, so that the steel ring is clamped. Steel rings of different specifications are clamped on the stroke of the existing slide block.

The connecting rod is connected with the rotating shaft and the sliding block seat to realize that the circumferential motion of the rotating shaft is transited to the radial motion of the sliding block seat, the connecting rod adopts a sectional type, the height difference exists between the power input end and the power output end, the connecting rod is adaptive to the height difference between the rotating shaft and the sliding block seat, and the two ends of the connecting rod are connected by self-lubricating bearings.

The rocking arm is connected in connecting rod and pivot, inserts simultaneously and drives actuating cylinder, is circumferential motion under the effect that drives actuating cylinder to transmit the connecting rod.

The mounting disc is used for mounting the sliding block seat, the guide rail assembly, the electromagnet assembly and the fixed cylinder.

The gripping device is further provided with a mounting seat, the mounting seat is arranged on one side, away from the clamping assembly, of the mounting disc, and the mounting seat is used for mounting the steel ring gripping device so as to be convenient for connecting the rack.

The clamping wheel realizes the function of clamping the steel ring, and meanwhile, the self-adaptive steel ring can generate rotary motion in the clamping process.

The driving assembly is driven by the air cylinder, fixed on the mounting disc and fixed in a hinged mode.

The electro-magnet is used for correcting the steel ring, and the steel ring can produce when moving to this device from last device and rock, and the electro-magnet circular telegram produces suction and prevents that the steel ring from being close to rocking that the in-process can produce.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a grabbing device for snatch the steel ring, its characterized in that, grabbing device includes:

a mounting plate (60);

a plurality of clamping assemblies (70), wherein the clamping assemblies (70) are arranged on one side of the mounting disc (60) at intervals along the circumferential direction of the mounting disc (60), and each clamping assembly (70) is movably arranged along the radial direction of the mounting disc (60);

a driving assembly (80), wherein the driving assembly (80) is arranged on the mounting disc (60) and is used for driving the clamping assembly (70) to move;

the connecting assembly (90), the driving assembly (80) is connected with the connecting assembly (90), the connecting assembly (90) is connected with the plurality of clamping assemblies (70), wherein the driving assembly (80) drives the plurality of clamping assemblies (70) to move along the radial direction of the mounting disc (60) through the connecting assembly (90) simultaneously so as to clamp or loosen the steel ring.

2. The grasping apparatus according to claim 1, wherein the grasping apparatus further comprises:

the guide rail assemblies (61) are arranged on the mounting disc (60), the guide rail assemblies (61) are arranged in one-to-one correspondence with the clamping assemblies (70), and the guide rail assemblies (61) extend along the radial direction of the mounting disc (60);

a plurality of sliding seats (62), the plurality of sliding seats (62) and the plurality of guide rail assemblies (61) are arranged in a one-to-one correspondence manner, and each sliding seat (62) is movably arranged on the corresponding guide rail assembly (61) so as to move along the extending direction of the guide rail assembly (61);

wherein, the clamping component (70) is arranged on the sliding seat (62), and the connecting component (90) is connected with the sliding seat (62) so as to drive the clamping component (70) to move along the guide rail component (61) correspondingly through the sliding seat (62).

3. The grasping apparatus according to claim 2, wherein the clamping assembly (70) includes:

the clamping wheel (71), the clamping wheel (71) is rotatably arranged on the sliding seat (62) and is used for being attached to the outer wall of the steel ring.

4. The grasping device according to claim 1, wherein the connecting assembly (90) includes:

a rotating mechanism (91), wherein the rotating mechanism (91) is connected with the driving assembly (80) to rotate under the driving of the driving assembly (80);

a plurality of connecting rods (92), the connecting rods (92) and the clamping assemblies (70) are arranged in a one-to-one correspondence manner, and the connecting rods (92) are rotatably connected with the corresponding clamping assemblies (70);

wherein, a plurality of the connecting rods (92) are respectively and rotatably connected with the rotating mechanism (91), and the rotating mechanism (91) is connected with each connecting rod (92) to drive each clamping component (70) to move correspondingly.

5. Gripping device according to claim 4, characterized in that the rotation mechanism (91) comprises:

the rotating shaft (911), the driving component (80) is in driving connection with the rotating shaft (911);

a plurality of rotating arms (912), a plurality of rotating arms (912) are arranged at one end of the rotating shaft (911) at intervals, a plurality of rotating arms (912) and a plurality of connecting rods (92) are arranged in one-to-one correspondence, and the connecting rods (92) are rotatably connected with the corresponding rotating arms (912).

6. The grasping apparatus according to claim 4, wherein the connecting rod (92) has a first connecting portion (921) and a second connecting portion (922), the connecting rod (92) being rotatably connected with the rotating mechanism (91) through the first connecting portion (921), the connecting rod (92) being rotatably connected with the clamping assembly (70) through the second connecting portion (922);

wherein the top of the first connecting part (921) is located in a first plane, the top of the second connecting part (922) is located in a second plane, and the first plane and the second plane are distributed along a direction perpendicular to the mounting plate (60).

7. The gripping device according to claim 4, wherein the driving assembly (80) comprises a driving cylinder (81), the driving cylinder (81) is rotatably disposed on the mounting plate (60), and the driving cylinder (81) is rotatably connected with the rotating mechanism (91) to drive the rotating mechanism (91) to rotate.

8. The gripping device according to claim 7, characterized in that the rotation mechanism (91) comprises:

a driving arm (913), the driving cylinder (81) being rotatably connected to one end of the driving arm (913);

the rotating shaft (911) is connected with one end, away from the driving cylinder (81), of the driving arm (913);

wherein, the driving cylinder (81) is connected with the driving arm (913) to drive the rotating shaft (911) to rotate.

9. The gripping device according to claim 8, wherein the mounting plate (60) is provided with a guide hole (63), the driving assembly (80) comprises a connecting shaft, the connecting shaft is insertably disposed in the guide hole (63), the driving cylinder (81) and the driving arm (913) are oppositely disposed at two sides of the mounting plate (60), and the driving cylinder (81) is connected with the driving arm (913) through the connecting shaft.

10. The grasping apparatus according to claim 1, wherein the grasping apparatus further comprises:

the electromagnet assembly (64) is arranged on the mounting disc (60), so that the steel ring is positioned on the mounting disc (60) under the magnetic action of the electromagnet assembly (64).