CN220815511U - Roller brake core structure and three-roller brake - Google Patents

Abstract

The application relates to the technical field of channel gates, and provides a roller gate movement structure and a three-roller gate. The roller brake movement structure comprises a mounting bottom plate, a limiting chuck, a limiting assembly and a magnetic damping assembly, wherein the limiting chuck is rotationally connected to the mounting bottom plate; wherein, magnetism damping subassembly is connected between spacing chuck and mounting plate, and spacing chuck is configured to respond to magnetism absorption of magnetism damping subassembly and reduce the rotational speed. The roller brake core structure provided by the application consumes the rotational kinetic energy of the limiting chuck by utilizing the magnetic adsorption effect of the magnetic damping component, so that the effect of reducing the rotational speed of the limiting chuck is achieved, the buffering and noise reduction effects are met, the structure is simpler, and the cost is reduced.

Description

Roller brake core structure and three-roller brake

Technical Field

The application relates to the technical field of channel gates, in particular to a roller gate movement structure and a three-roller gate.

Background

The three-roller brake is used as a device for controlling pedestrians to pass in and out and enabling the pedestrians to pass in order, and is widely applied to various public places such as subway stations, stations or office buildings. The three-roller gate can be matched with an intelligent system, such as a ticket, a card and the like for use, so as to achieve the effect of controlling the ordered access of pedestrians.

At present, when the three-roller gate machine is stopped in rotation, the problems that impact vibration noise is large and experience is influenced often exist. In the related art, a hydraulic damper is generally adopted to buffer and consume rotational kinetic energy, but in order to meet the requirement of balanced stress and achieve better buffering and noise reduction effects, two hydraulic dampers are required to be arranged separately, so that a movement mechanism is complex, and the cost is high.

Disclosure of utility model

Based on this, it is necessary to provide a roller brake core structure, when satisfying three roller brake normal use, can effectively consume the kinetic energy that produces in the rotation process, satisfy the buffering and fall and make an uproar, and simple structure, the cost is lower.

A roller brake core structure comprises an installation bottom plate, a limiting chuck, a limiting assembly and a magnetic damping assembly,

The limiting chuck is rotationally connected to the mounting bottom plate, and the limiting assembly is mounted on the mounting bottom plate and used for intermittently limiting the rotation of the limiting chuck;

Wherein the magnetic damping assembly is connected between the limit chuck and the mounting base plate, the limit chuck being configured to reduce rotational speed in response to magnetic attraction of the magnetic damping assembly.

It can be understood that the normal use of the three-roller brake is satisfied through the cooperation of the limiting chuck and the limiting assembly. In this process, connect magnetism damping subassembly between mounting plate and spacing chuck to utilize magnetism adsorption effect to consume spacing chuck's rotational energy, thereby reach the effect that reduces spacing chuck rotational speed. Therefore, when the rotating speed and the kinetic energy of the limiting chuck are reduced, the impact between the limiting chuck and the limiting assembly is also reduced, so that the effects of buffering and noise reduction are achieved; and, the structure is simpler, reduce cost in this arrangement.

In some embodiments, the magnetic damping assembly includes a magnetic body and a magnet, one of the magnetic body and the magnet is mounted on the limit chuck, the other is mounted on the mounting base plate, and the magnet is capable of magnetically attracting the magnetic body.

In some embodiments, a first plane in which the magnetic body is located is opposite to a second plane in which the magnet is located along an axial direction of the limit chuck, and an assembly gap is formed between the first plane and the second plane.

In some of these embodiments, the magnetic body is configured as a conductor or a magnet.

In some embodiments, the magnetic damping assembly further comprises a mounting base mounted to the mounting base plate, the mounting base is configured with an extension arm, the extension arm is located on one side of the limit chuck away from the mounting base plate, and the extension arm is connected with the magnet.

In some embodiments, the number of the magnetic bodies is a plurality, and the plurality of the magnetic bodies are arranged at intervals around the axis of the limit chuck.

In some embodiments, the limit chuck is provided with a plurality of limit protrusions protruding outwards along the radial direction of the limit chuck, the limit protrusions are arranged at intervals around the axis of the limit chuck, and each limit protrusion is connected with one magnetic body.

In some embodiments, the limit chuck has a first limit portion, the limit assembly has a second limit portion, the first limit portion and the second limit portion are capable of abutting to limit rotation of the limit chuck, and at least one of the first limit portion and the second limit portion is provided with a cushion pad.

In some embodiments, the limiting chuck comprises at least two sub chucks which are arranged in a stacking way along the axis of the sub chucks, each sub chuck is correspondingly provided with a group of limiting assemblies, and each limiting assembly is provided with the second limiting part;

Each sub-chuck is provided with a plurality of limiting clamping grooves which are arranged at intervals around the axis of the sub-chuck, the corresponding limiting clamping grooves of each sub-chuck form a first limiting part, and each first limiting part and each second limiting part are in one-to-one correspondence;

at least one of the first and second sets of limit portions is mounted with the cushion pad.

In some embodiments, one set of the limiting assemblies includes a rolling body, a rotating arm and an elastic member, one end of the rotating arm is rotatably connected to the mounting base plate, the other end of the rotating arm is connected to one end of the elastic member, the other end of the elastic member is connected to the mounting base plate, the rolling body is rotatably connected to the rotating arm, and the rolling body is defined as the second limiting portion;

Wherein a group of sub-chucks are configured as cams, the cams are matched with the rolling bodies, and a plurality of limit clamping grooves are arranged on the cams at intervals.

In some embodiments, at least two sub-chucks are respectively arranged at two sides of the thickness direction of the mounting bottom plate, and each limiting component is matched with the corresponding sub-chuck.

The three-roller brake machine comprises a roller rod turntable structure and the roller brake machine core structure, wherein the roller rod turntable structure is connected with a limiting chuck in the roller brake machine core structure. Through the setting of above-mentioned roller floodgate core structure, when satisfying three roller floodgate normal use, can effectively consume the kinetic energy that rotates in-process and produce, satisfy the buffering and fall and make an uproar, and simple structure, the cost is lower.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a first schematic view of a roller shutter movement structure provided by the present application;

FIG. 2 is a second schematic view of a roller shutter movement structure according to the present application;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a first partial schematic view of a three-roller shutter according to the present application;

Fig. 5 is a second partial schematic diagram of the three-roller gate according to the present application.

Reference numerals: 100. a roller brake movement structure; 110. a mounting base plate; 120. a limit chuck; 130. a limit component; 140. a magnetic damping assembly; 150. a cushion pad; 160. a drive shaft; 170. an optoelectronic switch; 141. a magnetic body; 142. a magnet; 143. a mounting base; 1201. a limit protrusion; 1202. a limit clamping groove; 121a, a first sub-chuck; 121b, a second sub-chuck; 131. a first limit assembly; 132. the second limiting component; 1211. a cam; 1212. a ratchet wheel; 1311. a rolling element; 1312. a rotating arm; 1313. an elastic member; 1314. a first rotation shaft; 1321. a pawl; 1322. an electromagnet; 1323. a second rotation shaft; 200. a roller lever turntable structure; 210. a turntable; 220. and a roller rod.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like are used in the description of the present application for the purpose of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may be that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through intermedial media. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

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

Referring to fig. 1 and 5, the present application provides a roller brake movement structure 100, which includes a mounting base plate 110, a limiting chuck 120, a limiting assembly 130 and a magnetic damping assembly 140, wherein the limiting chuck 120 is rotatably connected to the mounting base plate 110, and the limiting assembly 130 is mounted on the mounting base plate 110 for intermittently limiting the rotation of the limiting chuck 120. Wherein the magnetic damping assembly 140 is connected between the limit chuck 120 and the mounting base plate 110, the limit chuck 120 is configured to reduce the rotational speed in response to the magnetic attraction of the magnetic damping assembly 140.

Specifically, the limiting chuck 120 is rotatably connected with the mounting base plate 110 through a driving shaft 160, and in the process of rotating the limiting chuck 120, the setting of the limiting assembly 130 can be utilized to limit the rotation of the limiting chuck 120, so as to meet the requirements of pedestrian entering and exiting and blocking. The problem of collision caused by overlarge rotating speed of the limiting chuck 120 can occur in the process of limiting and matching the limiting assembly 130 with the limiting chuck 120, and the larger the rotating speed is, the more serious the collision is, and the larger the generated noise is. Therefore, the magnetic damping assembly 140 is connected between the mounting base plate 110 and the limit chuck 120 to generate rotation resistance by using magnetic attraction, and the rotation of the limit chuck 120 is hindered, so that the rotation kinetic energy of the rotation process of the limit chuck 120 is consumed, and the effect of reducing the rotation speed of the limit chuck 120 is achieved. Therefore, when the rotational speed and kinetic energy of the limit chuck 120 are reduced, the impact between the limit chuck 120 and the limit assembly 130 is also reduced, so as to achieve the effects of buffering and noise reduction. Moreover, due to the arrangement of the magnetic damping assembly 140, the overall structure is simpler than two hydraulic shock absorbers, thereby reducing the cost.

With continued reference to fig. 1 and 5, the exemplary magnetic damping assembly 140 includes a magnetic body 141 and a magnet 142, the magnetic body 141 is mounted on the limit chuck 120, the magnet 142 is mounted on the mounting base 110, the magnetic body 141 can rotate synchronously with the limit chuck 120, and the magnet 142 can magnetically attract the magnetic body 141 to apply a force opposite to the rotation direction to the limit chuck 120; at this time, in order to satisfy the continued rotation of the limit chuck 120, the above-mentioned force opposite to the rotation direction needs to be overcome, thereby consuming the rotational kinetic energy. In an alternative embodiment, the magnetic body 141 may be mounted on the mounting base plate 110, and the magnet 142 may be mounted on the limit chuck 120, so long as the rotation resistance generated on the rotation of the limit chuck 120 by magnetic attraction can be satisfied.

In some embodiments, the magnetic body 141 may be a conductor, and when the magnetic body 141 rotates synchronously with the limit chuck 120, the magnetic body 141 also moves relative to the magnet 142, so as to cut the magnetic induction line and generate an induced current. At this time, the magnetic body 141 receives an ampere force, thereby blocking the movement of the magnetic body 141 to satisfy the rotation blocking of the limit chuck 120, and consuming the rotational kinetic energy. The magnetic body 141 may be an aluminum plate. In an alternative embodiment, the magnetic body 141 may directly use a magnet to prevent the rotation of the limit chuck 120 by using a magnetic attraction effect.

In an alternative embodiment, along the axial direction of the limit chuck 120, a first plane in which the magnetic body 141 is located is opposite to a second plane in which the magnet 142 is located, and an assembly gap is formed between the first plane and the second plane. That is, the magnetic body 141 is disposed opposite to and spaced apart from the magnet 142 in the axial direction of the limit chuck 120, so that the magnetic body 141 cuts the magnetic induction line generated by the magnet 142 in the case of a conductor, thereby generating a resistance opposite to the rotation direction of the limit chuck 120. Meanwhile, by the arrangement of the assembly gap, the magnetic body 141 is prevented from being directly contacted with the magnet 142 to generate abrasion.

The first plane is a plane where the magnetic body 141 is away from a sidewall of the limit chuck 120, and the second plane is a plane where the magnet 142 is toward a sidewall of the limit chuck 120. In practical use, the size of the assembly gap is between 1.5mm and 2.5 mm. That is, the size of the fitting clearance should not be too large nor too small. If the assembly gap is large, the magnetic attraction between the magnetic body 141 and the magnet 142 is affected, and the rotation resistance of the limit chuck 120 is weakened; if the assembly gap is too small, the magnetic body 141 and the magnet 142 may collide with each other due to the overturning moment to which the limit chuck 120 is rotated. Therefore, it is necessary to limit the size of the assembly gap, and to prevent the magnetic body 141 from contacting the magnet 142 and causing wear while securing the blocking effect.

As shown in fig. 1, the number of the magnetic bodies 141 is plural by way of example, and the plurality of magnetic bodies 141 are arranged at intervals around the axis of the limit chuck 120. In this way, in the rotation process of the limit chuck 120 around the axis thereof, intermittent resistance between the plurality of magnetic bodies 141 and the magnets 142 can be born, so that the rotation speed of the limit chuck 120 is effectively reduced, and the buffering noise reduction effect is satisfied.

In actual use, the limiting chuck 120 is provided with a plurality of limiting protrusions 1201 protruding outwards along the radial direction of the limiting chuck 120, the plurality of limiting protrusions 1201 are arranged at intervals around the axis of the limiting chuck 120, and each limiting protrusion 1201 is connected with a magnetic body 141. It can be appreciated that, by using the arrangement of the plurality of limiting protrusions 1201, a limiting slot 1202 is defined between any two adjacent limiting protrusions 1201, and the limiting slot 1202 can be matched with the limiting assembly 130 to realize the rotation limiting of the limiting chuck 120; moreover, the plurality of limiting clamping grooves 1202 are arranged at intervals around the axis of the limiting chuck 120, so that intermittent limiting can be met. At this time, a magnetic body 141 is attached to each of the stopper protrusions 1201 to satisfy the intermittent resistance described above; moreover, due to the protruding arrangement of each limiting protrusion 1201, the magnetic body 141 is mounted at the position of the limiting chuck 120 close to the edge, so that more assembly space is provided for the assembly of the magnet 142, and the assembly interference is reduced.

Further, the magnetic damping assembly 140 further includes a mounting base 143, the mounting base 143 is mounted on the mounting base 110, and the mounting plate is configured with an extension arm, the extension arm is located on a side of the limit chuck 120 away from the mounting base 110, and the extension arm is connected with the magnet 142. That is, with the provision of the mounting seat 143, the magnet 142 can be mounted to the side opposite to the limit chuck 120 along the axis thereof, satisfying the assembly requirement. Wherein, mount 143 includes backup pad and linking board, and the backup pad is used for fixed with mounting plate 110, and the linking board extends along the axial of spacing chuck 120, and the linking board is connected between backup pad and extension arm, and the extension arm extends along the radial inwards of spacing chuck 120 to make magnet 142 and magnetic body 141 along the axial of spacing chuck 120 relatively and the interval arrangement. Wherein, backup pad and extension arm parallel arrangement to all arrange with the linking board angle.

Still further, the size of the magnetic body 141 is adapted to the size of the stopper protrusion 1201. That is, the projection area of the magnetic body 141 and the projection area of the stopper protrusion 1201 substantially overlap in the axial direction of the stopper chuck 120. At this time, two magnets 142 are provided and spaced apart in the rotation direction of the limit chuck 120 to satisfy the area of engagement with the magnetic body 141.

Referring to fig. 1 to 3, in an alternative embodiment, the limit chuck 120 has a first limit portion, the limit assembly 130 has a second limit portion, and the first limit portion and the second limit portion can abut to limit the rotation of the limit chuck 120. Wherein, at least one of the first and second limiting parts is installed with a cushion pad 150. It can be appreciated that, because the limiting chuck 120 and the limiting assembly 130 are intermittently limited, each time the limiting chuck 120 and the limiting assembly 130 are in contact, when the rotational speed of the limiting chuck 120 is relatively high, the first limiting portion and the second limiting portion can collide more easily. At this time, due to the arrangement of the cushion pad 150, a buffering effect is achieved for the collision, and the buffering noise reduction is further satisfied.

The cushion pad 150 may be mounted on only the first limiting portion, the cushion pad 150 may be mounted on only the second limiting portion, or the cushion pad 150 may be mounted on both the first and second limiting portions.

In some embodiments, the cushion 150 is made of rubber or silicone.

With continued reference to fig. 1 to 3, in actual use, the limiting chuck 120 includes at least two sub-chucks stacked along the axis thereof, each sub-chuck being correspondingly provided with a set of limiting assemblies 130, and each limiting assembly 130 having a second limiting portion. Each sub-chuck is provided with a plurality of limiting clamping grooves 1202 which are arranged at intervals around the axis of the sub-chuck, the limiting clamping grooves 1202 corresponding to each sub-chuck form a first limiting part, and each first limiting part corresponds to each second limiting part one by one. At this time, at least one of the at least one set of the first and second stopper portions is mounted with the cushion pad 150.

Taking the number of sub-chucks as two examples, the two sub-chucks are respectively arranged on two sides of the mounting base plate 110 along the thickness direction of the mounting base plate 110, and each limiting assembly 130 is matched with the corresponding sub-chuck. That is, a set of sub-chucks and limiting assemblies 130 are respectively arranged on two sides of the mounting base plate 110 in the thickness direction, so that the two sides of the mounting base plate 110 in the thickness direction bear acting force, and stability is improved. At this time, the buffer and noise reduction can be satisfied by the arrangement of the buffer pad 150 between each sub-chuck and the limiting assembly 130.

The two sets of sub-chucks and stop assemblies 130 are described below, respectively. For convenience of description, the first sub-chuck 121a corresponds to the first limiting component 131, and the second sub-chuck 121b corresponds to the second limiting component 132.

As shown in fig. 2 and 3, in some embodiments, the first limiting assembly 131 includes a rolling body 1311, a rotating arm 1312, and an elastic member 1313, one end of the rotating arm 1312 is rotatably connected to the mounting base 110, the other end of the rotating arm 1312 is connected to one end of the elastic member 1313, the other end of the elastic member 1313 is connected to the mounting base 110, the rolling body 1311 is rotatably connected to the rotating arm 1312, and the rolling body 1311 is defined as a second limiting part. The rolling element 1311 is limited in the limiting slot 1202 by the elastic element 1313. The first chuck is configured as a cam 1211, the cam 1211 is adapted to the rolling bodies 1311, the cam 1211 is configured with a plurality of limit clamping grooves 1202 which are arranged at intervals around the axis thereof, and the buffer pad 150 is mounted on the groove wall of each limit clamping groove 1202. Wherein, the limit clamping groove 1202 is an arc groove, which is convenient for adapting to the outer peripheral surface of the rolling body 1311; and, the transition between any two adjacent limit protrusions 1201 can be gentle.

In actual use, a first rotating shaft 1314 for rotating the rotating arm 1312 is mounted on the mounting base plate 110, and a support column for connecting to one end of the elastic member 1313 is mounted on the mounting base plate 110. Taking the example that the cam 1211 has three limiting protrusions 1201, any two adjacent limiting protrusions 1201 are spaced 60 degrees apart, and a limiting slot 1202 is provided therebetween. When the cam 1211 is rotated by the external force, the elastic member 1313 is stretched to apply a reverse force to the rotating arm 1312; as the rotation angle of the cam 1211 increases gradually, the reverse force applied by the elastic member 1313 will promote the rotation of the acceleration cam 1211 until the cam 1211 rotates 120 degrees, and the rolling element 1311 will also reach into a limit slot 1202 engaged therewith, completing a movement cycle. Wherein the rotation angle of the cam 1211 in one movement cycle is 120 degrees.

In some particular embodiments, the rolling bodies 1311 are rollers; meanwhile, the elastic member 1313 employs a tension spring.

As shown in fig. 1, in yet other embodiments, second spacing assembly 132 includes a pawl 1321 and an electromagnet 1322, pawl 1321 being configured to selectively press against second sub-chuck 121b in response to magnetic attraction of electromagnet 1322. At this time, the second sub-chuck 121b is configured as a ratchet 1212 to mate with the pawl 1321. In actual use, the second rotating shaft 1323 for rotating the pawl 1321 is mounted on the mounting base plate 110, and after the electromagnet 1322 is energized, the actuating rod extends into the pressing pawl 1321, so that the pawl 1321 abuts against the ratchet 1212 in the limit slot 1202, and the rotation limit of the ratchet 1212 is realized. After the electromagnet 1322 is de-energized, the actuating rod retracts to drive the pawl 1321 to rotate in a reverse direction relative to the ratchet 1212, releasing the limit on the ratchet 1212. Wherein, the number of the limit clamping grooves 1202 on the ratchet 1212 is three, and any two adjacent limit clamping grooves 1202 are arranged at intervals of 60 degrees; and, the limit slot 1202 on the ratchet 1212 is adapted to the limit slot 1202 on the cam 1211.

Wherein, the cam 1211, the rolling element 1311 and the elastic member 1313 cooperate to accelerate the rotation of the cam 1211 in one movement cycle; and, the rotation limit is achieved by the cooperation of the ratchet 1212 and the pawl 1321.

Further, two pawls 1321 may be respectively disposed at two ends of the ratchet 1212 along the radial direction thereof to ensure balanced force. At this time, the magnetic damping assembly 140 described above is installed between the two pawls 1321. Meanwhile, a photoelectric switch 170 is further provided on the outer peripheral side of the ratchet 1212 to connect a trigger piece to the ratchet 1212 to detect rotation of the ratchet 1212.

Still further, the ratchet 1212 may be made of carbon steel, the magnetic body 141 may be made of aluminum alloy, the mount 143 for mounting the magnetic body 141 may be made of carbon steel, and the mount base 110 may be made of aluminum alloy.

In other embodiments, the number of sub-chucks may also be three, or four. The device can be prepared according to actual conditions as long as the device meets the use requirements and the assembly requirements.

Referring to fig. 4 and 5, a three-roller brake is provided according to another embodiment of the present application, which includes a roller turntable structure 200 and the roller movement structure 100, wherein the roller turntable structure 200 is connected to the limit chuck 120 in the roller movement structure 100. The roller lever turntable structure 200 includes a turntable 210 and three roller levers 220, wherein the three roller levers 220 are arranged at intervals around an axis of the turntable 210 and are both connected to the turntable 210, and the turntable 210 is connected to the limit chuck 120.

In actual use, the roller 220 drives the limit chuck 120 to rotate through the turntable 210 under the action of the pushing force of the user. When the limit chuck 120 starts to rotate, the rotation speed is smaller, and the damping moment generated by the magnetic damping assembly 140 is smaller; after the limit chuck 120 rotates by more than 60 degrees, acceleration is started due to the arrangement of the elastic piece 1313, the maximum speed is reached when the limit chuck 120 rotates to 120 degrees, and the corresponding damping moment is also maximum at the moment, so that the aim of effectively reducing the rotating speed of the limit chuck 120 is fulfilled, and buffering and noise reduction are realized. Meanwhile, since the cushion pad 150 is installed in the limit groove 1202 on the cam 1211, the rotational impact between the rolling body 1311 and the cam 1211 is further reduced. Thus, vibration noise in the rotation process of the roller lever turntable structure 200 is greatly reduced.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be determined from the following claims.

Claims (12)

1. A roller brake movement structure is characterized in that the roller brake movement structure (100) comprises a mounting bottom plate (110), a limiting chuck (120), a limiting assembly (130) and a magnetic damping assembly (140),

The limiting chuck (120) is rotatably connected to the mounting base plate (110), and the limiting assembly (130) is mounted on the mounting base plate (110) and used for intermittently limiting the rotation of the limiting chuck (120);

wherein the magnetic damping assembly (140) is connected between the limit chuck (120) and the mounting base plate (110), the limit chuck (120) being configured to reduce rotational speed in response to magnetic attraction of the magnetic damping assembly (140).

2. The roller shutter movement structure according to claim 1, wherein the magnetic damping assembly (140) includes a magnetic body (141) and a magnet (142), one of the magnetic body (141) and the magnet (142) is mounted to the limit chuck (120), the other is mounted to the mounting base plate (110), and the magnet (142) is capable of magnetically attracting the magnetic body (141).

3. The roller shutter movement structure according to claim 2, wherein, along an axial direction of the limit chuck (120), a first plane in which the magnetic body (141) is located and a second plane in which the magnet (142) is located are disposed opposite to each other, and the first plane and the second plane have an assembly gap.

4. A roller shutter movement structure according to claim 2 or 3, characterized in that the magnetic body (141) is configured as a conductor or a magnet.

5. A roller shutter movement structure according to claim 2 or 3, wherein the magnetic damping assembly (140) further comprises a mounting base (143), the mounting base (143) being mounted to the mounting base (110), the mounting base (143) being configured with an extension arm located on a side of the limit chuck (120) facing away from the mounting base (110), the extension arm being connected to the magnet (142).

6. The roller shutter movement structure according to claim 2, wherein the number of the magnetic bodies (141) is plural, and the plural magnetic bodies (141) are arranged at intervals around the axis of the limit chuck (120).

7. The roller brake movement structure according to claim 2, wherein the limit chuck (120) has a plurality of limit protrusions (1201) protruding outwards along a radial direction thereof, the limit protrusions (1201) are arranged at intervals around an axis of the limit chuck (120), and each limit protrusion (1201) is connected with one magnetic body (141).

8. The roller brake movement structure according to claim 1, wherein the limit chuck (120) has a first limit portion, the limit assembly (130) has a second limit portion, the first limit portion and the second limit portion are capable of abutting to limit rotation of the limit chuck (120), and at least one of the first limit portion and the second limit portion is provided with a cushion pad (150).

9. The roller shutter movement structure according to claim 8, wherein the limit chuck (120) comprises at least two sub-chucks arranged in a stacked manner along a self-axis, each sub-chuck being provided with a set of limit assemblies (130) in correspondence, each limit assembly (130) having the second limit portion;

Each sub-chuck is provided with a plurality of limiting clamping grooves (1202) which are arranged at intervals around the axis of the sub-chuck, the limiting clamping grooves (1202) corresponding to each sub-chuck form a first limiting part, and each first limiting part and each second limiting part are in one-to-one correspondence;

at least one of the first and second sets of limit stops mounts the cushion pad (150).

10. The roller shutter movement structure according to claim 9, wherein a set of the stopper assemblies (130) includes a rolling body (1311), a rotating arm (1312), and an elastic member (1313), one end of the rotating arm (1312) is rotatably connected to the mounting base plate (110), the other end of the rotating arm (1312) is connected to one end of the elastic member (1313), the other end of the elastic member (1313) is connected to the mounting base plate (110), the rolling body (1311) is rotatably connected to the rotating arm (1312), and the rolling body (1311) is defined as the second stopper;

wherein a group of sub-chucks are configured as cams (1211), the cams (1211) are matched with the rolling bodies (1311), and a plurality of limit clamping grooves (1202) are arranged on the cams (1211) at intervals.

11. The roller shutter movement structure according to claim 9, wherein at least two sub-chucks are respectively provided on both sides of the mounting base plate (110) in the thickness direction, and each of the limiting assemblies (130) is adapted to the corresponding sub-chuck.

12. The utility model provides a three roller floodgate machine which characterized in that, three roller floodgate machine includes:

a roller shutter movement structure according to any one of claims 1 to 11;

The roller rod turntable structure (200), the roller rod turntable structure (200) is connected to a limiting chuck (120) in the roller gate movement structure (100).