Electromagnetic brake, escalator motor and escalator

Abstract

According to the electromagnetic brake, the escalator motor and the escalator, the electromagnetic brake comprises a brake disc, a movable iron core, a static iron core, a spinning cover and a torque adjusting assembly, the spinning cover is in threaded connection with the static iron core, the spinning cover comprises a pressure adjusting part, and a plurality of limiting grooves are formed in the position, at the pressure adjusting part, of the spinning cover; the torque adjusting assembly penetrates through the static iron core and comprises a pressure adjusting column and a first elastic element, the first elastic element is arranged between the movable iron core and the pressure adjusting column in a pre-compression mode, and the end, away from the first elastic element, of the pressure adjusting column abuts against the pressure adjusting part; when the spinning cover rotates relative to the static iron core, the spinning cover can drive the first elastic element to deform through the pressure adjusting column, and the pressure adjusting column enters and exits the limiting groove. According to the electromagnetic brake, the braking torque of the electromagnetic brake can be adjusted, in addition, real-time feedback can be conducted in the adjusting process of the braking torque of the electromagnetic brake, and excessive adjustment is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic braking technology, and in particular relates to an electromagnetic brake, an escalator motor, and an escalator. Background Technology

[0002] In the current escalator industry, the electromagnetic brake in the escalator motor is usually a power-off electromagnetic brake, which enables the electromagnetic brake to automatically stop the motor shaft in the escalator motor after the induction coil is de-energized.

[0003] Currently, existing electromagnetic brakes have a fixed, preset braking torque, preventing escalator motors using these brakes from adapting their braking torque to specific on-site conditions. Furthermore, because escalator motor electromagnetic brakes are speed-operated brakes, compared to zero-speed braking, the impact and wear on the brake disc during braking increases. This alters the braking clearance and the friction surface of the brake disc, affecting the braking torque and rendering the originally set torque insufficient for actual on-site requirements. Therefore, it is necessary to design an adjustable braking torque electromagnetic brake to meet the long-term maintenance requirements of escalator motors used in escalators. Utility Model Content

[0004] In view of this, it is necessary to provide an electromagnetic brake with adjustable braking torque, an escalator motor, and an escalator.

[0005] An electromagnetic brake, comprising:

[0006] Brake disc, used to connect the motor shaft;

[0007] The brake disc comprises a moving iron core, a stationary iron core, and an induction coil. Along the axial direction of the brake disc, the moving iron core and the stationary iron core are sequentially arranged on one side of the brake disc, and the induction coil is mounted on the stationary iron core. When energized or de-energized, the moving iron core is attracted or released to drive the moving iron core to reciprocate relative to the brake disc and control the locking / unlocking of the brake disc.

[0008] A spun cap is disposed on the side of the stationary iron core away from the moving iron core and screwed to the stationary iron core. The spun cap includes a pressure adjusting part, and the spun cap has multiple limiting grooves at the position of the pressure adjusting part. The multiple limiting grooves are arranged at intervals along the circumferential direction of the stationary iron core.

[0009] A torque adjusting assembly is arranged through the static core, and the torque adjusting assembly comprises a pressure adjusting column and a first elastic element arranged in a pre-compressed manner between the moving core and the pressure adjusting column, and an end of the pressure adjusting column away from the first elastic element is abutted to the pressure adjusting portion;

[0010] When the spinning cover rotates relative to the static core, the spinning cover can drive the first elastic element to deform through the pressure adjusting column, and the pressure adjusting column can enter or exit the limiting groove.

[0011] It can be understood that the adjustment of the pressure of the moving core by the first elastic element is realized by controlling the deformation of the first elastic element when the spinning cover rotates on the static core, so that the braking torque of the electromagnetic brake can be adjusted to meet different torque requirements. In this process, the feedback generated when the pressure adjusting column enters or exits the limiting groove can be used to prompt the user, which not only improves the operation experience of the user when adjusting the braking torque of the electromagnetic brake, but also provides real-time feedback during the adjustment process of the braking torque of the electromagnetic brake, preventing excessive adjustment and avoiding the risk of the electromagnetic brake caused by excessive adjustment.

[0012] In one embodiment, the pressure adjusting column has a ball head, and the pressure adjusting column can be abutted to the pressure adjusting portion through the ball head.

[0013] The ball head is matched with the limiting groove.

[0014] It can be understood that the ball head enters or exits the limiting groove, and the structural characteristics of the ball head can reduce the frictional resistance when the ball head enters or exits the limiting groove, so that the ball head on the pressure adjusting column can smoothly enter or exit the limiting groove.

[0015] In one embodiment, one of the spinning cover and the static core is marked with a scale line, and the other is provided with a mark, and the mark can be aligned with the scale line to guide the adjustment of the rotation of the spinning cover on the static core.

[0016] It can be understood that the rotation of the spinning cover on the static core is guided by the scale of the scale line, so that the rotation angle of the spinning cover on the static core can be quantified, and the visualization of the adjustment of the braking torque of the electromagnetic brake is realized, which can improve the accuracy of the adjustment of the braking torque of the electromagnetic brake to meet the use requirements of the field working conditions.

[0017] In one embodiment, the number of torque adjusting assemblies is configured as multiple groups, and the multiple groups of torque adjusting assemblies are arranged in a central symmetry relative to the central axis of the moving core.

[0018] It can be understood that the plurality of torque adjusting assemblies are arranged in a central symmetry manner, so that the plurality of torque adjusting assemblies can realize the flat pushing of the moving iron core towards the brake disc, and the moving iron core is uniformly pressed.

[0019] In one of the embodiments, the central axis of the spinning cover is arranged in the same line with the central axis of the static iron core; the spinning cover is provided with a screwing part, which is used for plug-in cooperation with an external screwing tool, and is used for driving the spinning cover to rotate relative to the static iron core.

[0020] The static iron core is provided with a U-shaped channel, the spinning cover protrudes towards the static iron core and is provided with an extension protruding part, the extension protruding part extends into the U-shaped channel, and the extension protruding part can enter and exit the U-shaped channel along the central axis of the static iron core under the driving of the spinning cover, and controls the compression or reset deformation of the first elastic element.

[0021] It can be understood that the external screwing tool inserted into the screwing part is used to drive the spinning cover to rotate on the static iron core, which facilitates the user to drive the spinning cover to rotate on the static iron core, thereby facilitating the adjustment of the braking torque of the electromagnetic brake.

[0022] In one of the embodiments, the electromagnetic brake further comprises a torque assembly, which is arranged on the periphery of the spinning cover and penetrates the static iron core.

[0023] The torque assembly comprises an adjusting screw, a flat pad and a second elastic element, the adjusting screw is screwed on the static iron core, the second elastic element is arranged in a pre-compressed manner between the moving iron core and the flat pad, and one end of the flat pad away from the second elastic element abuts on one end of the adjusting screw in the static iron core.

[0024] In one of the embodiments, the electromagnetic brake further comprises a guide positioning pin, which is installed on the static iron core and is in sliding connection with the moving iron core, and is used for guiding the reciprocating motion of the moving iron core relative to the brake disc.

[0025] It can be understood that the guide positioning pin is used to guide the motion of the moving iron core, which can ensure the consistency of the direction of the moving iron core, avoid the jamming of the moving iron core during the motion, and prevent the brake disc from being subjected to frictional resistance during the rotation following the motor shaft when the electromagnetic brake is not braked, thereby ensuring the stability of the electromagnetic brake.

[0026] In one of the embodiments, the electromagnetic brake further comprises a transition plate, the transition plate is arranged on the side of the brake disc away from the moving iron core, and the moving iron core can lock the brake disc to the transition plate.

[0027] The end of the guide positioning pin away from the moving iron core is inserted into the transition plate and gap-fitted with the transition plate.

[0028] It can be understood that, by means of the gap-fitting between the guide positioning pin and the transition plate, the guide positioning pin can bear the shearing torque force when the electromagnetic brake brakes, thereby improving the operation stability of the electromagnetic brake.

[0029] The application further provides an escalator motor comprising a motor shaft and the electromagnetic brake.

[0030] The brake disc is sleeved on the motor shaft and is circumferentially limited by the motor shaft.

[0031] The application further provides an escalator comprising the escalator motor.

[0032] Due to the application of the above technical solutions, the application has the following advantages compared with the prior art.

[0033] The electromagnetic brake, the escalator motor and the escalator claimed in the application utilize the control of the deformation of the first elastic element when the spinning cover rotates on the static iron core to realize the adjustment of the pressing force of the first elastic element on the moving iron core, so that the braking torque of the electromagnetic brake can be adjusted to adapt to different torque requirements; in this process, the feedback generated when the pressure adjusting column enters and exits the limiting groove can be utilized to achieve the purpose of prompting the user, so that not only the operation experience of the user when adjusting the braking torque of the electromagnetic brake can be improved, but also the adjustment process of the braking torque of the electromagnetic brake can be fed back in real time to prevent excessive adjustment, thereby avoiding the unidentifiable risk caused by excessive adjustment of the electromagnetic brake. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0035] Figure 1 The structural schematic diagram of the electromagnetic brake provided by the application.

[0036] Figure 2 The sectional view of the electromagnetic brake provided by the application.

[0037] Figure 3 For Figure 2 Enlarged view of the middle P part.

[0038] Figure 4 For the structure diagram when the spinning cover cooperates with the pressure regulating column in the present application.

[0039] Reference signs: 100, electromagnetic brake; 10, brake disc; 20, moving iron core; 30, static iron core; 31, induction coil; 311, open slot; 32, U-shaped channel; 40, spinning cover; 401, pressure regulating part; 41, limiting groove; 42, screwing part; 43, scale line; 44, extending protruding part; 50, torque adjusting assembly; 51, pressure regulating column; 511, ball head; 512, extending protruding column; 52, first elastic element; 60, torque assembly; 61, adjusting screw rod; 62, flat washer; 63, second elastic element; 70, guiding positioning pin; 80, transition plate; 90, hollow bolt. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] It should be noted that when an element is referred to as "provided on" another element, it can be directly provided on the other element or there can be a middle element. When an element is referred to as "provided on" another element, it can be directly provided on the other element or there can be a middle element. When an element is referred to as "fixed on" another element, it can be directly fixed on the other element or there can be a middle element.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] The electromagnetic brake 100 claimed in the present application, in particular, is applied to a power-off electromagnetic brake in an escalator motor of an escalator.

[0044] As Figure 1 , Figure 2As shown, the electromagnetic brake 100 provided by the present application comprises a brake disc 10, a moving iron core 20, a static iron core 30, an induction coil 31, a spinning cover 40 and a torque adjusting assembly 50, the brake disc 10 is used for connecting a motor shaft (not shown in the figure); along the axial direction of the brake disc 10, the moving iron core 20 and the static iron core 30 are sequentially arranged on one side of the brake disc 10, the induction coil 31 is installed on the static iron core 30, and under the conditions of power-on or power-off, the moving iron core 20 is attracted or released to drive the moving iron core 20 to reciprocate relative to the brake disc 10, and the locking / unlocking of the brake disc 10 is controlled; the spinning cover 40 is arranged on the side of the static iron core 30 away from the moving iron core 20 and is screwed with the static iron core 30, the spinning cover 40 comprises a pressure adjusting part 401, a plurality of limiting grooves 41 are formed on the pressure adjusting part 401, and the plurality of limiting grooves 41 are arranged along the circumferential direction of the static iron core 30; the torque adjusting assembly 50 is arranged through the static iron core 30, the torque adjusting assembly 50 comprises a pressure adjusting column 51 and a first elastic element 52, the first elastic element 52 is arranged in a pre-compressed manner between the moving iron core 20 and the pressure adjusting column 51, and one end of the pressure adjusting column 51 away from the first elastic element 52 abuts on the pressure adjusting part 401; when the spinning cover 40 rotates relative to the static iron core 30, the spinning cover 40 can drive the first elastic element 52 to deform through the pressure adjusting column 51, and the pressure adjusting column 51 enters and exits the limiting groove 41.

[0045] As can be seen from the above, the electromagnetic brake 100 provided by the present application utilizes the control of the deformation of the first elastic element 52 by the spinning cover 40 when the spinning cover 40 rotates on the static iron core 30 to realize the adjustment of the pressing force of the first elastic element 52 on the moving iron core 20, so that the braking torque of the electromagnetic brake 100 can be adjusted to meet different torque requirements; in this process, the feedback generated when the pressure adjusting column 51 enters and exits the limiting groove 41 can be used to achieve the purpose of prompting the user, so that not only the operation experience of the user when adjusting the braking torque of the electromagnetic brake 100 can be improved, but also real-time feedback can be provided during the adjustment process of the braking torque of the electromagnetic brake 100 to prevent excessive adjustment, so that the risk of the electromagnetic brake 100 being unable to be identified due to excessive adjustment can be avoided.

[0046] In the present application, the number of limiting grooves 41 of the spinning cover 40 on the pressure regulating portion 401 is many, which can be adaptively set according to the use requirement, to ensure that each adjustment of the braking torque of the electromagnetic brake 100 can make the pressure regulating column 51 at least in and out of two limiting grooves 41; the electromagnetic brake 100 of the present application adjusts the braking torque by rotating the spinning cover 40, because the pressure regulating column 51 has a tendency to move towards the pressure regulating portion 401 under the elastic push of the first elastic element 52, and in combination with the concave structure of the limiting groove 41, the action force and the reaction force are used to make the pressure regulating column 51 collide with the pressure regulating portion 401 of the spinning cover 40 during the process of in and out of the limiting groove 41, so that the spinning cover 40 in turn generates a touch pressure feeling to the user and produces a sound, which can achieve the purpose of prompting the user.

[0047] It should be noted that when the spinning cover 40 rotates on the static iron core 30, the pressure regulating column 51 can be switched between different limiting grooves 41 on the spinning cover 40, and the compression or reset deformation of the first elastic element 52 can be controlled, so that there is a one-to-one correspondence between the adjustment angle of the spinning cover 40, the in and out of the different limiting grooves 41 on the spinning cover 40 for the pressure regulating column 51, and the deformation of the first elastic element 52. That is, there is a one-to-one correspondence between the adjustment angle of the spinning cover 40 and the pre-compression amount of the first elastic element 52. Specifically, as shown in Figure 1 , when the spinning cover 40 rotates clockwise and switches between the adjacent two limiting grooves 41, the corresponding adjustment angle of the spinning cover 40 is 20°, and the torque of the first elastic element 52 is increased by 21N, and vice versa.

[0048] As shown in Figure 2 , in an embodiment, the induction coil 31 is assembled into the static iron core 30 in an embedded manner, and the assembly connection of the induction coil 31 on the static iron core 30 is realized. That is, the induction coil 31 of the embodiment is accommodated in the static iron core 30, so that the assembly of the induction coil 31 on the static iron core 30 does not occupy space, and the induction coil 31 is easily assembled to the static iron core 30.

[0049] As shown in Figure 2 , in the embodiment, the end of the static iron core 30 away from the spinning cover 40 is provided with an open groove 311, and the open groove 311 is used to accommodate the induction coil 31 and realize the assembly of the induction coil 31 in the static iron core 30. Here, the open groove 311 is arranged on the periphery of the torque adjusting assembly 50. The static iron core 30 is provided with a through groove, and the through groove is arranged in a spaced manner with the open groove 311, and the torque adjusting assembly 50 is located in the through groove.

[0050] As shown in Figure 3 , Figure 4As shown in the figure, in an embodiment, the pressure regulating column 51 has a ball head 511, and the pressure regulating column 51 is capable of abutting to the pressure regulating portion 401 through the ball head 511; wherein the ball head 511 is matched to the limiting recess 41. That is, the electromagnetic brake 100 of this embodiment is capable of entering and exiting the limiting recess 41 through the ball head 511, so that the frictional resistance when the ball head 511 enters and exits the limiting recess 41 can be reduced by using the structural characteristics of the ball head 511, and the ball head 511 on the pressure regulating column 51 can enter and exit the limiting recess 41 smoothly. Here, the limiting recess 41 is configured as a circular arc groove matched to the ball head 511. It can be understood that in other embodiments, the limiting recess 41 can also be in other irregular shapes such as an arc shape, a square shape, etc., and of course, the part of the pressure regulating column 51 for abutting to the pressure regulating portion 401 can also adopt a square, triangular or other regular-shaped protruding structure, which will not be described here.

[0051] As shown in the figure, Figure 2 , Figure 4 in an embodiment, the central axis of the spinning cover 40 is arranged on the same straight line as the central axis of the static iron core 30; wherein the spinning cover 40 is provided with a screwing portion 42, which is used for plug-in cooperation with an external screwing tool, and is used for driving the spinning cover 40 to rotate relative to the static iron core 30. That is, the user can drive the spinning cover 40 to rotate on the static iron core 30 by acting on the screwing portion 42 of the spinning cover 40 through the external screwing tool, which can facilitate the user to drive the spinning cover 40 to rotate on the static iron core 30. Here, the screwing portion 42 is configured as a square slot opened at the rotation center position of the spinning cover 40. It can be understood that in other embodiments, the screwing portion 42 can also be configured as a triangular slot opened at the rotation center position of the spinning cover 40, or the screwing portion 42 is configured as a square head protruding away from the static iron core 30, which will not be described here.

[0052] As shown in the figure, Figure 2 , Figure 4 in this embodiment, the spinning cover 40 protrudes towards the static iron core 30 and is formed with an extension protruding portion 44, and correspondingly, the static iron core 30 is opened with a U-shaped channel 32, the extension protruding portion 44 extends into the U-shaped channel 32 and forms a threaded connection with the U-shaped channel 32, and the extension protruding portion 44 is capable of entering and exiting the U-shaped channel 32 along the central axis of the static iron core 30 under the driving of the spinning cover 40, and controls the first elastic element 52 to compress or reset the deformation. Here, the screwing portion 42 is arranged at the position of the extension protruding portion 44 of the spinning cover 40.

[0053] As shown in the figure, Figure 1As shown in the drawings, in an embodiment, one of the spinning cover 40 and the static iron core 30 is marked with a scale line 43, and the other is provided with a mark (not shown in the drawings), which can be aligned with the scale line 43 to guide the adjustment of the rotation of the spinning cover 40 on the static iron core 30, especially the adjustment angle. That is, the electromagnetic brake 100 of this embodiment can use the scale of the scale line 43 to quantify the rotation angle of the spinning cover 40 when it rotates on the static iron core 30, and realize the visualization of the brake torque adjustment of the electromagnetic brake 100, which can improve the accuracy of the brake torque adjustment of the electromagnetic brake 100 to meet the use requirements of the field working conditions. Here, the scale line 43 is marked on the spinning cover 40, and the scale line 43 is circular as a whole, and the mark is provided on the static iron core 30. It can be understood that in other embodiments, the scale line can also be marked on the static iron core 30, and correspondingly, the mark is provided on the spinning cover 40.

[0054] It should be noted that since the pressing force of the first elastic element 52 on the moving iron core 20 changes linearly, and there is a positive correlation between the rotation angle of the spinning cover 40 when it rotates on the static iron core 30 and the deformation amount of the first elastic element 52, so that the user can control the rotation angle of the spinning cover 40 when it rotates on the static iron core 30, that is, the purpose of controlling the different pressing forces of the first elastic element 52 on the moving iron core 20 can be achieved.

[0055] As shown in the drawings, Figure 2 In an embodiment, the number of torque adjustment assemblies 50 is configured as multiple groups, and the multiple groups of torque adjustment assemblies 50 are symmetrically arranged relative to the central axis of the moving iron core 20. So that the multiple groups of torque adjustment assemblies 50 in the electromagnetic brake 100 cooperate with each other and jointly realize the flat pushing drive of the moving iron core 20 towards the brake disc 10, so that the moving iron core 20 can be uniformly pressed. Here, the number of torque adjustment assemblies 50 is configured as two groups, three groups, four groups, or even more groups, which will not be expanded here.

[0056] As shown in the drawings, Figure 3 In an embodiment, the pressure regulating column 51 is provided with an extension column 512, which is inserted into the first elastic element 52 and is inserted and matched with the first elastic element 52, so as to realize the abutting limiting between the first elastic element 52 and the pressure regulating column 51, which can ensure the stability of the power transmission between the pressure regulating column 51 and the first elastic element 52. Here, the first elastic element 52 of this embodiment is configured as a compression spring. It can be understood that in other embodiments, the first elastic element 52 can also be configured as a rubber sleeve or other elastic accessories with high elasticity, which will not be expanded here.

[0057] As shown in the drawings, Figure 2As shown, in one embodiment, the electromagnetic brake 100 further includes a torque assembly 60, which is disposed around the periphery of the spin-forming cover 40 and penetrates the stationary iron core 30. Here, the torque assemblies 60 are configured in four groups, arranged symmetrically on the stationary iron core 30. These four groups cooperate to jointly push the moving iron core 20 towards the brake disc 10, thus ensuring uniform pressure on the moving iron core 20. It is understood that in other embodiments, the number of torque assemblies 60 may be three, five, six, or even more groups, which will not be elaborated upon here.

[0058] like Figure 2 As shown, in this embodiment, the torque assembly 60 includes an adjusting screw 61, a flat washer 62, and a second elastic element 63. The adjusting screw 61 is screwed onto the stationary iron core 30. The second elastic element 63 is pre-compressed and positioned between the moving iron core 20 and the flat washer 62. One end of the flat washer 62 facing away from the second elastic element 63 abuts against the end of the adjusting screw 61 located inside the stationary iron core 30. In other words, this embodiment allows adjustment of the pushing force of the second elastic element 63 against the moving iron core 20 by turning the adjusting screw 61. Here, the second elastic element 63 can also be configured as a compression spring, a rubber sleeve, or other highly elastic components.

[0059] It should be noted that the torque component 60 and the torque adjustment component 50 in this embodiment are used together to resist the force when pushing the moving iron core 20. The force of the torque component 60 when pushing the moving iron core 20 is set according to the braking torque requirements when the electromagnetic brake 100 is manufactured. When the electromagnetic brake 100 is used in the field, the force of the torque adjustment component 50 when pushing the moving iron core 20 can be adjusted by turning the pressure cap 40, thereby achieving the purpose of adjusting the braking torque of the electromagnetic brake 100.

[0060] like Figure 2As shown, in one embodiment, the electromagnetic brake 100 further includes a guide positioning pin 70, which is mounted on the stationary iron core 30 and slidably connected to the moving iron core 20, for guiding the reciprocating motion of the moving iron core 20 relative to the brake disc 10. In other words, the electromagnetic brake 100 of this embodiment can use the guide positioning pin 70 to guide the movement of the moving iron core 20, thus ensuring the consistency of the direction of the reciprocating motion of the moving iron core 20 relative to the brake disc 10 and preventing jamming during the movement of the moving iron core 20. This also prevents the brake disc 10 from experiencing frictional resistance during rotation with the motor shaft when the electromagnetic brake 100 is not braking, thereby ensuring the operational stability of the electromagnetic brake 100. Here, the guide positioning pin 70 is set on the periphery of the brake disc 10 to avoid interference between the guide positioning pin 70 and the brake disc 10. The guide positioning pin 70 is partially inserted into the stationary iron core 30 and connected to the stationary iron core 30 by an interference fit. The moving iron core 20 can be specifically fitted with the guide positioning pin 70 by a linear bushing.

[0061] It should be noted that if the brake disc 10 is subjected to frictional resistance when rotating with the motor shaft, the temperature of the electromagnetic brake 100 will increase by generating heat through friction. As the temperature of the electromagnetic brake increases, the electromagnetic performance of the electromagnetic brake 100 will weaken, thereby reducing the service life of the electromagnetic brake 100.

[0062] In this embodiment, two guide positioning pins 70 are configured. These two guide positioning pins 70 can simultaneously guide the movement of the moving iron core 20 to ensure the stability of its movement. It is understood that in other embodiments, the number of guide positioning pins 70 may also be configured as three, four, or even more, which will not be elaborated here.

[0063] like Figure 2 As shown, in one embodiment, the electromagnetic brake 100 further includes a transition plate 80, which is disposed on the side of the brake disc 10 facing away from the moving iron core 20. The moving iron core 20 can lock the brake disc 10 onto the transition plate 80. A guide positioning pin 70, with one end facing away from the moving iron core 20, is inserted into the transition plate 80 and engages with it with a clearance fit. This allows the guide positioning pin 70 to withstand shear torque during braking of the electromagnetic brake 100, thereby improving the operational stability of the electromagnetic brake 100. Specifically, the transition plate 80 is used to connect to the housing of the escalator motor.

[0064] It should be noted that the electromagnetic brake 100 of the present application further comprises a connecting assembly, which comprises a hollow bolt 90 and a connecting bolt (not shown in the figure), the hollow bolt 90 is arranged through the moving iron core 20, one end of the hollow bolt 90 is connected with the static iron core 30 in a threaded manner, and the other end of the hollow bolt 90 abuts against the transition plate 80; and the connecting bolt is installed inside the hollow bolt 90, and the part of the connecting bolt extending out of the hollow bolt 90 is screwed with the transition plate 80, so as to realize the assembly and fixation between the transition plate 80 and the static iron core 30. For those skilled in the art, it can be determined without any doubt that the gap between the threaded section of the hollow bolt 90 located inside the moving iron core 20 and the moving iron core 20 is large, and the movement of the moving iron core 20 cannot be guided, and for the same reason, the gap between the threaded section of the connecting bolt located inside the transition plate 80 and the transition plate 80 is also large; and when the moving iron core 20 locks the brake disc 10 to the transition plate 80 and makes the rotating brake disc 10 stop, in this process, the connecting bolt in the connecting assembly needs to bear a large shear torque force, and since the overall size of the connecting bolt is small, it is easy to be broken due to the large shear torque force, thereby causing the braking failure of the electromagnetic brake 100. Obviously, the electromagnetic brake 100 of the present application can well solve the above-mentioned technical problems by arranging the guide positioning pin 70, and plays a role in improving the service life of the electromagnetic brake 100.

[0065] As can be seen from the above, when the induction coil 31 is in the energized state, the moving iron core 20 will move towards the static iron core 30 under the action of the magnetic field generated when the induction coil 31 is energized, and is attracted to the static iron core 30, at this time, the pressure on the brake disc 10 is removed, and the brake disc 10 can rotate with the motor shaft; when the induction coil 31 loses power, the moving iron core 20 can move towards the brake disc 10 under the pushing of the first elastic element 52 and the second elastic element 63, and lock the brake disc 10 on the transition plate 80, thereby controlling the motor shaft to stop rotating.

[0066] The present application also provides an escalator motor, which comprises a motor shaft, the electromagnetic brake 100 described above, and the brake disc 10 is sleeved on the motor shaft and is circumferentially limited by the motor shaft.

[0067] In addition, the present application also provides an escalator, which comprises the escalator motor described above.

[0068] The technical features of the above embodiments can be combined in any manner, and in order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0069] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as a limitation to the present application, and as long as the above embodiments are made within the scope of the present application, the appropriate changes and variations of the above embodiments fall within the scope of the present application.

Claims

1. An electromagnetic brake, characterized by, The electromagnetic brake (100) comprises: A brake disc (10) for connecting a motor shaft; A moving iron core (20), a static iron core (30) and an induction coil (31) arranged in the axial direction of the brake disc (10), the moving iron core (20) and the static iron core (30) being arranged in sequence on one side of the brake disc (10), and the induction coil (31) being mounted on the static iron core (30), and the moving iron core (20) being driven to reciprocate relative to the brake disc (10) by attracting or releasing the moving iron core (20) under the conditions of power-on or power-off, so as to control the locking / unlocking of the brake disc (10); A spinning cover (40) arranged on the side of the static iron core (30) away from the moving iron core (20) and screwed with the static iron core (30), the spinning cover (40) comprising a pressure regulating part (401), and a plurality of limiting grooves (41) being formed in the position of the pressure regulating part (401) of the spinning cover (40) and arranged in the circumferential direction of the static iron core (30) at intervals; A torque adjusting assembly (50) arranged through the static iron core (30), the torque adjusting assembly (50) comprising a pressure regulating column (51) and a first elastic element (52), the first elastic element (52) being arranged in a pre-compressed manner between the moving iron core (20) and the pressure regulating column (51), and one end of the pressure regulating column (51) away from the first elastic element (52) abutting against the pressure regulating part (401); When the spinning cover (40) rotates relative to the static iron core (30), the spinning cover (40) can drive the first elastic element (52) to deform through the pressure regulating column (51), and the pressure regulating column (51) can enter or exit the limiting grooves (41).

2. The electromagnetic brake of claim 1, wherein, The pressure regulating column (51) has a ball head (511), and the pressure regulating column (51) can abut against the pressure regulating part (401) through the ball head (511); The ball head (511) is matched with the limiting grooves (41).

3. The electromagnetic brake of claim 1, wherein, One of the spinning cover (40) and the static iron core (30) is marked with a scale line (43), and the other is provided with an identifier, the identifier can be aligned with the scale line (43), and the adjustment of the rotation of the spinning cover (40) on the static iron core (30) is guided.

4. The electromagnetic brake of claim 1, wherein, The number of the torque adjusting assemblies (50) is configured as multiple groups, and the multiple groups of torque adjusting assemblies (50) are arranged in a central symmetry relative to the central axis of the moving iron core (20).

5. The electromagnetic brake of claim 1, wherein, The central axis of the spinning cover (40) is arranged on the same straight line as the central axis of the static iron core (30), a screwing part (42) is arranged on the spinning cover (40), the screwing part (42) is used for plug-in cooperation with an external screwing tool, and the spinning cover (40) is driven to rotate relative to the static iron core (30). The static iron core (30) is provided with a U-shaped channel (32), the spinning cover (40) partially protrudes towards the static iron core (30) and is provided with an extension protrusion (44), the extension protrusion (44) extends into the U-shaped channel (32), and the extension protrusion (44) can be driven by the spinning cover (40) to enter and exit the U-shaped channel (32) along the central axis of the static iron core (30), and control the first elastic element (52) to compress or reset the deformation.

6. The electromagnetic brake of claim 1, wherein, The electromagnetic brake (100) further comprises a torque assembly (60) arranged on the periphery of the spinning cover (40) and penetrating the static iron core (30); The torque assembly (60) comprises an adjusting screw (61), a flat pad (62) and a second elastic element (63), the adjusting screw (61) is screwed on the static iron core (30), the second elastic element (63) is arranged between the moving iron core (20) and the flat pad (62) in a pre-compressed manner, and the end of the flat pad (62) away from the second elastic element (63) abuts on the end of the adjusting screw (61) located in the static iron core (30).

7. The electromagnetic brake of claim 1, wherein, The electromagnetic brake (100) further comprises a guide positioning pin (70) mounted on the static iron core (30) and in sliding connection with the moving iron core (20), for guiding the reciprocating movement of the moving iron core (20) relative to the brake disc (10).

8. The electromagnetic brake of claim 7, wherein, The electromagnetic brake (100) further comprises a transition plate (80) arranged on the side of the brake disc (10) away from the moving iron core (20), and the moving iron core (20) can lock the brake disc (10) to the transition plate (80); The end of the guide positioning pin (70) away from the moving iron core (20) is inserted into the transition plate (80) and gap-fitted with the transition plate (80).

9. An escalator motor, characterized by The motor shaft, the electromagnetic brake (100) of any one of claims 1 to 8; The brake disc (10) is sleeved on the motor shaft and is circumferentially limited by the motor shaft.

10. An escalator, characterized in that The escalator motor of claim 9. The escalator motor of claim 9.

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