CN211058692U - Swing gate movement - Google Patents

Abstract

The utility model discloses a swing gate movement. A power failure return mechanism in the swing gate movement comprises: a support plate, an electromagnetic clutch, a torsion spring, a top protrusion and a bottom protrusion. The support plate is rotatably sheathed on the swing gate. The electromagnetic clutch includes a fixed clutch and a movable clutch that are both sleeved on the outer side of the rotating shaft in the swing gate, and the movable clutch and the fixed clutch are in contact with each other, and the top of the fixed clutch is fixed to the support plate. The torsion spring is vertically sleeved between the rotating shaft and the electromagnetic clutch, and is located below the support plate, the top end of the torsion spring is fixedly connected with the bottom end of the support plate, and the bottom end is fixedly connected with the movable clutch. The fixed clutch and the movable clutch in the utility model are both installed on the rotating shaft, and the movable clutch indirectly controls the rotation of the door leaf by controlling the rotating shaft, so as to avoid the damage of the door leaf due to direct contact with the door leaf.

Description

Swing gate movement

technical field

The utility model relates to the technical field of swing gates. More specifically, the utility model relates to a swing gate movement.

Background technique

Swing gate is one of the most commonly used gates in channel management equipment. It has the characteristics of fast opening, safety and efficiency. It can be placed at the entrance and exit of many different places. The more common ones are: railway stations, subway stations, entertainment venues, tourist attractions, and the attendance system of units.

The existing swing gate movement generally includes: a gate housing, a motor vertically arranged in the housing, a break-in brake arranged in the housing, a coupling vertically connected to the top of the motor, and a vertical coupling with the top of the coupling. A directly fixed rotating shaft, a door leaf fixed to the rotating shaft, a power-off return mechanism connected to the rotating shaft, a controller, a sensor, a mechanical limit device, etc., wherein the power-off return mechanism includes a power-off return mechanism connected to the controller. Electromagnetic clutch, the electromagnetic clutch includes a fixed clutch and a movable clutch, the opening brake includes an opening brake connected with the controller and the sensor, and the opening brake includes a fixed opening brake and a movable opening brake, and the motor passes through the rotating shaft. Control the rotation of the door leaf, when the door leaf is at 0° or 180°, the gate is in a fully open state, and when the door leaf is at 90°, the gate is in a fully closed state. When the door leaf rotates to 0° or 180°, in order to avoid the situation that the door leaf will continue to rotate and collide with the gate due to inertia, the mechanical limit device can limit the door leaf to continue to rotate after rotating to 0° or 180°. . When the swing gate is running, the controller controls the motor to drive the door leaf to rotate. The controller controls the power-off return mechanism and the breaking brake to power off while controlling the rotation of the motor, that is, the fixed clutch and the fixed breaking brake are powered off. When the door leaf stops rotating, the power-off return mechanism is controlled to be energized, that is, the fixed clutch is energized to cooperate to realize the switch positioning of the door leaf. When the door leaf is in the closed state and the sensor detects that someone is breaking the brake, the controller controls the power on the breaking brake, that is, the fixed breaking brake is energized to realize the braking function.

Since the fixed clutch, the movable clutch and the rotating shaft in the existing swing gate movement are set separately, when the power failure of the swing gate occurs, the fixed clutch is powered off to release the movable clutch, and when it contacts the door leaf, it drives the door leaf to rotate to the 0° position to open the door leaf , In this process, due to the large restoring force generated by the torsion spring, the door leaf is easily damaged when the movable clutch touches the door leaf.

Utility model content

An object of the present invention is to solve at least the above-mentioned problems and to provide at least the advantages which will be explained later.

Another object of the present utility model is to provide a swing gate movement. The swing gate power-off return mechanism of the swing gate movement enables both the movable clutch and the fixed clutch to be installed on the rotating shaft, and the movable clutch indirectly controls the door leaf by controlling the rotating shaft. Rotate to avoid direct contact with the door leaf and damage to the door leaf.

In order to achieve these objects and other advantages according to the present invention, a swing gate movement is provided, which includes a swing gate housing, a motor vertically arranged in the housing, a coupling vertically connected to the top of the motor, The rotating shaft fixed vertically with the top of the coupling and the door leaf fixed with the rotating shaft are characterized in that:

A power failure return mechanism, which is arranged at the top of the rotating shaft, and the power failure return mechanism includes:

a support plate, which is rotatably sleeved on the outside of the rotating shaft and is fixedly connected with the swing gate housing;

An electromagnetic clutch, comprising a fixed clutch and a movable clutch both sleeved on the outside of the rotating shaft, the movable clutch and the fixed clutch are in contact with each other, wherein the top of the fixed clutch is fixedly connected to the support plate; a torsion spring, which The torsion spring is vertically sleeved between the rotating shaft and the electromagnetic clutch, and is located below the support plate, the top end of the torsion spring is fixedly connected to the bottom end of the support plate, and the bottom end is fixedly connected to the movable clutch;

a top protrusion, which is fixed on the bottom end of the movable clutch;

a bottom protrusion, which is located below the movable clutch and fixed on the rotating shaft, the distance between the bottom protrusion and the center of the rotating shaft is equal to the distance between the top protrusion and the center of the rotating shaft, and the bottom protrusion The distance between the top end of the protrusion and the bottom end of the movable clutch is less than the height of the top protrusion;

Wherein, when the door leaf is at 0°, the restoring force generated by the torsion spring is the smallest, and the top protrusion is located on one side of the bottom protrusion in the direction of rotation from 0° to 180° and abuts against each other.

Preferably, a bearing is fixedly sleeved on the rotating shaft, and the outer side surface of the bearing is fixedly connected with the support plate, so that the support plate can be rotatably sleeved on the rotating shaft.

Preferably, it further includes: a guide sleeve, which is located between the outer side of the rotating shaft and the inner side of the torsion spring, the top end of the guide sleeve is horizontally extended with a fixing part, and the top end of the fixing part is connected to the support plate The bottom end of the torsion spring is fixedly connected, and the top end of the torsion spring is fixedly connected with the bottom end of the fixing part.

Preferably, the outer circumference of the rotating shaft is condensed inward to form an annular groove, and the power-off return mechanism is arranged in the annular groove.

Preferably, it also includes:

A return block is sleeved on the rotating shaft and is located between the movable clutch and the bottom side surface of the annular groove, and the bottom surface of the return block is fixedly connected with the bottom side surface of the annular groove, so the bottom protrusion is fixed on the top surface of the return stop;

a fixed plate, which is sleeved on the outside of the guide sleeve and located between the movable clutch and the return block, the top end of the fixed plate is fixedly connected with the bottom end of the movable clutch, and the bottom end of the torsion spring is connected The horizontal projection of the part falls into the horizontal projection of the fixing plate, the bottom end of the torsion spring is fixedly connected to the top end of the fixing plate, and the top protrusion is fixedly connected to the bottom surface of the fixing plate. Preferably, it also includes:

The supporting part includes a second fixing plate and a main supporting plate that are sleeved on the outer side of the coupling at an upper and lower interval, the outer side of the main supporting plate is fixedly connected to the swing gate housing, and the second fixing plate is connected to the A support column is connected between the main support plates;

A brake breaking brake, which includes a movable breaking breaking brake and a fixed breaking breaking brake that are both sleeved on the outside of the coupling, the movable breaking breaking brake is fixed on the outside of the coupling, and the fixed breaking breaking brake is The top surface of the brake brake is fixedly connected to the bottom surface of the second fixed plate, and the top surface of the movable brake brake and the bottom surface of the fixed brake brake are in contact with each other.

Preferably, the top end of the motor is fixedly connected to the main support plate.

Preferably, the break-in brake is a claw-type electromagnetic clutch.

Preferably, it also includes: a mechanical limit device, which includes a brake breaker protrusion fixed on the bottom end of the movable brake breaker, and two main supports clamped on the top surface of the main support plate Plate bumps are respectively located on both sides of the brake bump, the distance between the main support plate bump and the center of the coupling is equal to the bump of the break brake and the coupling The distance between the centers, and the distance between the top surface of the main support plate bump and the bottom surface of the second fixed plate is less than the height of the brake bump;

Wherein, when the door leaf is at 90°, the protrusion of the brake breaker is in the middle position of the two main support plate bumps, and when the door leaf is at 0° or 180°, the breaker brake The device protrusions are respectively abutted against the main support plate protrusions.

The utility model at least includes the following beneficial effects:

Both the fixed clutch and the movable clutch in the swing gate movement are installed on the rotating shaft, and the two are in contact with each other. When the power failure of the swing gate occurs, the fixed clutch is powered off to release the movable clutch, and the movable clutch is driven by the restoring force generated by the torsion spring to rotate. , the movable clutch drives the shaft and the door leaf to rotate to the 0° position, and the door leaf opens. In this process, the movable clutch indirectly controls the rotation of the door leaf by controlling the rotating shaft, so as to avoid the damage of the door leaf due to direct contact with the door leaf.

Other advantages, objects, and features of the present invention will be manifested in part by the description below, and in part will be understood by those skilled in the art from the study and practice of the present invention.

Description of drawings

1 is a schematic structural diagram of the swing gate movement described in one of the technical solutions of the present utility model;

Fig. 2 is the sectional structure schematic diagram of part A in Fig. 1;

Fig. 3 is the sectional structure diagram of B part in 1;

Fig. 4 is the sectional structure diagram of part B in 1;

5 is a schematic top view of the structure of the swing gate movement according to one of the technical solutions of the present invention.

In the drawings: swing gate housing 1, motor 2, coupling 3, rotating shaft 4, door leaf 5, power-off return mechanism 100, support plate 101, electromagnetic clutch 102, fixed clutch 1021, movable clutch 1022, torsion spring 103, top protrusion 104, bottom protrusion 105, bearing 106, guide sleeve 107, fixing part 1071, annular groove 108, return stopper 109, fixing plate 110, supporting part 6, main supporting plate 61, second fixing Plate 62 , support column 63 , brake opening brake 7 , fixed opening brake brake 71 , movable opening brake 72 , mechanical limit device 8 , brake opening brake protrusion 81 , and main support plate bump 82 .

Detailed ways

The present utility model will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can refer to the text of the description to implement it accordingly.

It should be understood that terms such as "having", "comprising" and "including" as used herein do not assign the presence or addition of one or more other elements or combinations thereof.

As shown in Figures 1-5, the present invention provides a swing gate movement, the swing gate includes a swing gate housing 1, a motor 2 vertically arranged in the housing, and a coupling 3 vertically connected to the top of the motor 2 , the rotating shaft 4 fixed vertically with the top of the coupling 3, and the door leaf 5 fixedly connected with the rotating shaft 4, characterized in that, including:

A power-off return mechanism 100 is provided at the top of the rotating shaft 4, and the power-off return mechanism 100 includes:

A support plate 101, which is rotatably sleeved on the outside of the rotating shaft 4, and is fixedly connected with the swing gate housing 1;

The electromagnetic clutch 102 includes a fixed clutch 1021 and a movable clutch 1022 both sleeved on the outside of the rotating shaft 4 , the movable clutch 1022 and the fixed clutch 1021 are in contact with each other, wherein the top of the fixed clutch 1021 and the support plate 101 fixed connection;

The torsion spring 103 is vertically sleeved between the rotating shaft 4 and the electromagnetic clutch 102 , and is located below the support plate 101 . The top end of the torsion spring 103 is fixedly connected to the bottom end of the support plate 101 , The bottom end is fixedly connected with the movable clutch 1022;

a top protrusion 104, which is fixed on the bottom end of the movable clutch 1022;

The bottom protrusion 105 is located below the movable clutch 1022 and fixed on the rotating shaft 4 , and the distance between the bottom protrusion 105 and the center of the rotating shaft 4 is equal to the distance between the top protrusion 104 and the center of the rotating shaft 4 distance, and

The distance between the top end of the bottom protrusion 105 and the bottom end of the movable clutch 1022 is smaller than the height of the top protrusion 104;

Wherein, when the door leaf 5 is at 0°, the restoring force generated by the torsion spring 103 is the smallest, and the top protrusion 104 is located on one side of the bottom protrusion 105 in the direction of rotation from 0° to 180° and abuts against each other.

In the above technical solution, the motor 2, the coupling 3, the rotating shaft 4, and the power-off return mechanism 100 are arranged in the swing gate housing 1, the side of the door leaf 5 and the rotating shaft 4 are fixedly connected by bolts, and the operation of the motor 2 can drive the rotating shaft. 4 and the door leaf 5 rotate. The swing gate in the present invention may have only one door leaf 5, and the other side of the door leaf 5 is a wall or the swing gate housing 1 and other facilities that can be used to block, or two door leaves 5 arranged symmetrically on the left and right sides are used for Block pedestrians. The power-off return mechanism 100 includes a support plate 101 , an electromagnetic clutch 102 , a torsion spring 103 , a top protrusion 104 and a bottom protrusion 105 , wherein the support plate 101 is movably connected with the rotating shaft 4 , so that the space between the support plate 101 and the bearing 106 is movably connected. Relatively rotatable, the outer side of the support plate 101 is fixedly connected with the swing gate housing 1, so that the support plate 101 is not driven by the rotation of the rotating shaft 4; the electromagnetic clutch 102 includes a fixed electromagnetic clutch 1021 and a movable electromagnetic clutch 1022, both of which are sleeved on the rotating shaft On the outside, the top end of the fixed clutch 1021 is fixedly connected with the bottom end of the support plate 101, and the bottom end of the fixed clutch 1021 and the top end of the movable clutch 1022 are in contact with each other; Below the support plate 101, the top end of the torsion spring 103 is fixedly connected with the bottom end of the support plate 101, and the bottom end of the torsion spring 103 is fixedly connected with the movable clutch 1022; the bottom end of the movable clutch 1022 is provided with a top protrusion 104, and its shape is preferably a rectangular block A bottom protrusion 105 is fixed on the rotating shaft 4 below the movable clutch 1022, and its shape is preferably a rectangular block. The distance between the bottom ends of the movable clutch 1022 is smaller than the height of the top protrusion 104, so that the top protrusion 104 and the bottom protrusion 105 can be in contact with each other, wherein the top protrusion 104 is located in a direction that can block the bottom protrusion 105 from 0° to 180° The side of rotation (ie the door leaf 5 rotates from 0° to 180°). When the door leaf 5 is at 0°, the torsion spring 103 has a certain restoring force, and the restoring force is the smallest. Because the bottom protrusion 105 and the top protrusion 104 collide, the torsion spring 103 is prevented from returning to its natural state. During the rotation of the door leaf 5 from 0° to 180°, the bottom protrusion 105 on the rotating shaft 4 pushes the top protrusion 104 to rotate together, wherein the top protrusion 104 drives the bottom of the torsion spring 103 to rotate together, while the top of the torsion spring 103 is fixed. , so that the restoring force of the torsion spring 103 is enhanced. When the door leaf 5 rotates from 180° to 0°, the bottom protrusion 105 rotates with the rotating shaft 4, and the top protrusion 104 is driven by the restoring force of the torsion spring 103 to rotate in the same direction as the bottom protrusion 105, and keeps A state in contact with the bottom protrusion 105 . When the power outage occurs in special circumstances, the electromagnetic clutch 102 is de-energized and loses its magnetism. At this time, the restoring force generated by the torsion spring 103 drives the top protrusion 104 to rotate, and at the same time, the top protrusion 104 pushes the conflicting bottom protrusion 105 toward 0. Rotate in the ° direction, so that the door leaf 5 is opened.

During use, when pedestrians swipe their cards through the swing gate, the swiping signal will control the motor 2 to rotate and the fixed clutch 1021 to be powered off through the controller. When the power failure of the gate occurs, the fixed clutch 1021 loses its magnetic attraction force, and releases the attracted movable clutch 1022. The restoring force generated by the torsion spring 103 drives the rotating shaft 4 to rotate, so that the door leaf 5 rotates in the direction of 0°, and the swing gate is completely removed. Open. With this technical solution, the fixed clutch 1021 and the movable clutch 1022 in the power-off return mechanism 100 of the gate are both installed on the rotating shaft 4, and the two are in contact with each other. When the power of the swing gate turns off, the fixed clutch 1021 is disconnected The movable clutch 1022 is electrically released, and the restoring force generated by the torsion spring 103 drives the movable clutch 1022 to rotate, and the movable clutch 1022 drives the rotating shaft 4 and the door leaf 5 to rotate to the 0° position, and the door leaf 5 opens. During this process, the movable clutch 1022 indirectly controls the rotation of the door leaf 5 by controlling the rotating shaft 4 , so as to avoid damage to the door leaf 5 due to direct contact with the door leaf 5 .

In another technical solution, a bearing 106 is fixedly sleeved on the rotating shaft 4, and the outer surface of the bearing 106 is fixedly connected with the support plate 101, so that the support plate 101 can be rotatably sleeved on the rotating shaft 4, using This solution enables the rotation shaft 4 to rotate relative to the support plate 101 .

In another technical solution, it further includes: a guide sleeve 107, which is located between the outer side of the rotating shaft 4 and the inner side of the torsion spring 103, the top of the guide sleeve 107 is horizontally extended outward with a fixing portion 1071, the The top end of the fixing portion 1071 is fixedly connected with the bottom end of the support plate 101 , and the top end of the torsion spring 103 is fixedly connected with the bottom end of the fixing portion 1071 .

In the above technical solution, the power-off return mechanism 100 includes a guide sleeve 107 which is sleeved on the outside of the rotating shaft 4 , and the torsion spring 103 is sleeved on the outside of the guide sleeve 107 . For fixing, the bottom end of the fixed portion 1071 is fixed with the top end of the torsion spring 103 , and the fixed plate 110 and the movable clutch 1022 are rotationally guided and axially limited by the guide sleeve 107 .

In another technical solution, the outer circumference of the rotating shaft 4 is condensed inward to form an annular groove 108 , and the power-off return mechanism 100 is arranged in the annular groove 108 to facilitate the fixed installation of the power-off return mechanism 100 .

In another technical solution, it also includes:

A return block 109 is sleeved on the rotating shaft 4 and is located between the movable clutch 1022 and the bottom side of the annular groove 108 . The bottom side is fixedly connected, and the bottom protrusion 105 is fixedly connected to the top surface of the return block 109;

The fixed plate 110 is sleeved on the outside of the guide sleeve 107 and located between the movable clutch 1022 and the return block 109 , the top of the fixed plate 110 is fixedly connected with the bottom of the movable clutch 1022 , so The horizontal projection of the connecting portion of the bottom end of the torsion spring 103 falls into the horizontal projection of the fixing plate 110 , and the bottom end of the torsion spring 103 is fixedly connected to the top of the fixing plate 110 , wherein the top protrusion 104 is fixed to the top of the fixing plate 110 . on the bottom surface of the fixing plate 110 .

In the above technical solution, as shown in FIG. 2 , the return stopper 109 is fixedly connected to the bottom side of the annular groove 108 , the bottom protrusion 105 is fixedly connected to the top surface of the return stopper 109 , and the fixing plate 110 is sleeved. Outside the guide sleeve 107 , the top protrusion 104 is fixed on the bottom surface of the fixing plate 110 . By adopting this solution, the bottom protrusion 105 and the top protrusion 104 can be installed and fixed, and the top protrusion 104 and the bottom protrusion 105 can be abutted with each other. The fixed connection with the movable clutch 1022 is realized.

In another technical solution, it also includes:

The supporting part 6 includes a second fixing plate 62 and a main supporting plate 61 which are sleeved on the outer side of the coupling 3 at an upper and lower interval. A support column 63 is connected between the two fixing plates 62 and the main support plate 61;

Break-through brake 7, it comprises the movable break-through brake 72 and fixed break-through brake 71 that are all sleeved on the outside of said coupling 3, and said movable break-through brake 72 is fixed on said coupling 3 On the outside, the top surface of the fixed breaking brake 71 is fixed on the bottom surface of the second fixing plate 62 , and the top surface of the movable breaking brake 72 and the bottom surface of the fixed breaking brake 71 are in contact with each other.

In the above technical solution, as shown in FIGS. 3-4 , the support portion 6 includes three parts: a main support plate 61 , a second fixing plate 62 and a support column 63 , and the main support plate 61 is fixedly connected to the swing gate housing 1 , thereby realizing When the main support plate 61 is fixed, the second fixed plate 62 and the main support plate 61 are connected by the support column 63 , so that the second fixed plate 62 can be fixedly sleeved on the outside of the coupling 3 . The break-in brake 7 includes two parts, a movable break-in brake 72 and a fixed break-in brake 71, and both are sleeved on the outside of the coupling 3, and the fixed break-in brake 71 is fixed on the second fixed plate 62, and the movable break-in brake 71 is fixed on the second fixed plate 62. The brake brake 72 is fixed on the coupling 3, and when the coupling 3 rotates, the movable brake 72 is driven to rotate together, wherein the top surface of the movable brake 72 and the bottom surface of the fixed brake 71 are in contact with each other. , After the opening brake 7 is energized, the movable opening brake 72 and the fixed opening brake 71 will be energized and absorbed. During use, when the door leaf 5 is in the closed state and the sensor detects that someone is breaking the brake, the controller controls the breaking brake 7 to energize, that is, the fixed breaking brake 71 is energized to realize the braking function. Using this solution can block people who try to break through the gate without swiping the card.

In another technical solution, the top end of the motor 2 is fixedly connected to the main support plate 61 , so as to fix the motor 2 .

In another technical solution, the break-in brake 7 is a tooth-clamped electromagnetic clutch, which has a relatively large force of suction and after power-on, which can prevent pedestrians from breaking the brake.

In another technical solution, it also includes: a mechanical limiting device 8 , which includes a brake breaker protrusion 81 fixed on the bottom end of the movable brake breaker 72 and clamped on the main support plate 61 The two main support plate bumps 82 on the top surface are located on both sides of the brake bump 81 respectively. The distance between the main support plate bump 82 and the center of the coupling 3 is equal to the The distance between the brake protrusion 81 and the center of the coupling 3, and the distance between the top surface of the main support plate protrusion 82 and the bottom surface of the second fixing plate 62 is smaller than the distance between the brake protrusion from 81 height;

Wherein, when the door leaf 5 is at 90°, the brake breaker protrusion 81 is in the middle position of the two main support plate protrusions 82, and when the door leaf 5 is at 0° or 180°, all the The brake protrusions 81 are respectively abutted against the main support plate protrusions 82 .

In the above technical solution, as shown in FIGS. 3-4 , the mechanical limiting device 8 includes a brake breaker protrusion 81 and two main support plate protrusions 82 , the brake breaker protrusion 81 and the center of the coupling 3 The distance is equal to the distance between the main support plate bump 82 and the center of the coupling 3, and the distance between the top surface of the main support plate bump 82 and the bottom surface of the second fixing plate 62 is less than the height of the brake bump 81. When the plate projections 82 are rotated to 0° or 180°, they can abut against the corresponding main support plate projections 82 .

During the operation of the mechanical limiting device 8, when the door leaf 5 is in the closed state, that is, when the door leaf 5 is perpendicular to the swing gate housing 1, the brake breaker protrusion 81 is located in the middle position of the main support plate protrusion 82, and its distance The distance between the two main support plate bumps 82 is the same, when the door leaf 5 rotates to 0°, the brake bump 81 is abutted by the main support plate bump 82 on the corresponding side, preventing the rotating shaft 4 from driving the door leaf due to inertia 5 Continue to spin. In the state of power failure, in the process of rotating the door leaf 5 to 0° by the restoring force of the torsion spring 103, due to the restoring force of the torsion spring 103, the door leaf 5 will collide with the swing gate during the rotation process. The limiting device 8 can effectively avoid this phenomenon.

The number of equipment and processing scale described here are intended to simplify the description of the present invention. Applications, modifications and variations to the swing gate movement of the present invention will be apparent to those skilled in the art.

Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the description and the embodiments, and can be applied to various fields suitable for the present invention. For those skilled in the art, Additional modifications may readily be implemented, therefore, the invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the appended claims and the scope of equivalents.

Claims (9)

1. Swing gate movement, the swing gate includes a swing gate housing, a motor vertically arranged in the housing, a coupling vertically connected to the top of the motor, a rotating shaft vertically fixed to the top of the coupling, and a fixed shaft fixed to the rotating shaft. The door leaf connected, is characterized in that, comprises: A power failure return mechanism, which is arranged at the top of the rotating shaft, and the power failure return mechanism includes: a support plate, which is rotatably sleeved on the outside of the rotating shaft and is fixedly connected with the swing gate housing; an electromagnetic clutch, comprising a fixed clutch and a movable clutch both sleeved on the outside of the rotating shaft, the movable clutch and the fixed clutch are in contact with each other, wherein the top of the fixed clutch is fixedly connected to the support plate; a torsion spring, which is vertically sleeved between the rotating shaft and the electromagnetic clutch, and is located below the support plate, the top end of the torsion spring is fixedly connected to the bottom end of the support plate, and the bottom end is connected to the movable Clutch fixed; a top protrusion, which is fixed on the bottom end of the movable clutch; a bottom protrusion, which is located below the movable clutch and fixed on the rotating shaft, the distance between the bottom protrusion and the center of the rotating shaft is equal to the distance between the top protrusion and the center of the rotating shaft, and the bottom protrusion The distance between the top end of the protrusion and the bottom end of the movable clutch is less than the height of the top protrusion; Wherein, when the door leaf is at 0°, the restoring force generated by the torsion spring is the smallest, and the top protrusion is located on one side of the bottom protrusion in the direction of rotation from 0° to 180° and abuts against each other. 2 . The swing gate movement according to claim 1 , wherein a bearing is fixedly sleeved on the rotating shaft, and the outer side surface of the bearing is fixedly connected with the support plate, so that the support plate can be rotatably sleeved on the support plate. 3 . on the reel. 3 . The swing gate movement according to claim 1 , further comprising: a guide sleeve, which is located between the outer side of the rotating shaft and the inner side of the torsion spring, and the top of the guide sleeve extends horizontally outward with a A fixing part, the top end of the fixing part is fixedly connected with the bottom end of the support plate, and the top end of the torsion spring is fixedly connected with the bottom end of the fixing part. 4 . The swing gate movement according to claim 3 , wherein the outer circumference of the rotating shaft is condensed inward to form an annular groove, and the power-off return mechanism is arranged in the annular groove. 5 . 5. swing gate movement as claimed in claim 4, is characterized in that, also comprises: A return block is sleeved on the rotating shaft and is located between the movable clutch and the bottom side surface of the annular groove, and the bottom surface of the return block is fixedly connected with the bottom side surface of the annular groove, so the bottom protrusion is fixed on the top surface of the return stop; a fixed plate, which is sleeved on the outer rotating shaft of the guide sleeve and located between the movable clutch and the return block, the top of the fixed plate is fixedly connected with the bottom of the movable clutch, and the bottom of the torsion spring The horizontal projection of the end connecting part falls into the horizontal projection of the fixing plate, the bottom end of the torsion spring is fixedly connected with the top end of the fixing plate, and the top protrusion is fixedly connected to the bottom surface of the fixing plate. 6. The swing gate movement of claim 1, further comprising: The supporting part includes a second fixing plate and a main supporting plate that are sleeved on the outer side of the coupling at an upper and lower interval, the outer side of the main supporting plate is fixedly connected to the swing gate housing, and the second fixing plate is connected to the A support column is connected between the main support plates; A brake breaking brake, which includes a movable breaking breaking brake and a fixed breaking breaking brake that are both sleeved on the outside of the coupling, the movable breaking breaking brake is fixed on the outside of the coupling, and the fixed breaking breaking brake is The top surface of the brake brake is fixedly connected to the bottom surface of the second fixed plate, and the top surface of the movable brake brake and the bottom surface of the fixed brake brake are in contact with each other. 7 . The swing gate movement of claim 6 , wherein the top end of the motor is fixedly connected to the main support plate. 8 . 8 . The swing brake movement according to claim 6 , wherein the break-through brake is a tooth-clamped electromagnetic clutch. 9 . 9. The swing gate movement as claimed in claim 6, further comprising: a mechanical limiting device, which comprises a brake breaker protrusion fixedly connected to the bottom end of the movable brake breaker, and is clamped to The two main support plate bumps on the top surface of the main support plate are located on both sides of the brake bump, respectively, and the distance between the main support plate bump and the center of the coupling is equal to The distance between the protruding brake protrusion and the center of the coupling, and the distance between the top surface of the main support plate protrusion and the bottom surface of the second fixing plate is less than the height of the protruding brake protruding ; Wherein, when the door leaf is at 90°, the protrusion of the brake breaker is in the middle position of the two main support plate bumps, and when the door leaf is at 0° or 180°, the breaker brake The device protrusions are respectively abutted against the main support plate protrusions.

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