CN109736697B - Clamp type anti-falling device for roller shutter door - Google Patents

Abstract

The invention discloses a clamp type anti-falling device for a roller shutter door, which is mainly used for preventing the roller shutter door from falling down to hurt people, and has simple structure and safe and reliable protection; the device consists of a clamping device and a triggering device, and the working principle is as follows: when the door curtain of the rolling door rises and stops, the electromagnet A and the electromagnet B of the jaw device are electrified, the pair of jaws of the jaw device clamps the side wall of the door curtain sliding sleeve to prevent the door curtain from falling down, when the door curtain descends, the pair of jaws of the jaw device are released, the door curtain slides downwards at a normal speed, if the door curtain falls down suddenly, the rotor of the trigger device accelerates suddenly, the generated induced current increases suddenly, the attraction force between the movable electromagnet and the fixed electromagnet of the electromagnetic switch is increased, the electromagnetic switch is connected with the power supply of the electromagnet A and the electromagnet B of the jaw device, the electromagnet A and the electromagnet B attract each other to drive the pair of jaws to clamp the side wall of the door curtain sliding sleeve to prevent the door curtain from falling down.

Description

Clamp type anti-falling device for roller shutter door

Technical Field

The invention is mainly used for preventing the roller shutter door from falling down to hurt people.

Background

The anti-falling device for the rolling door which is applied or used at present has a complex structure and high maintenance cost.

Disclosure of Invention

The invention solves the problems, has simple structure, can prevent the roller shutter door from falling down in various states, and has safe and reliable protection; the device consists of a clamping device (1) and a trigger device (8); a rotating shaft (2) of the clamping device (1) is fixed with a hinge (16) at the lowest part of a curtain (15) of the rolling door; the clamping device (1) comprises a rotating shaft (2), an electromagnet A (3), an electromagnet B (4), a spring (5), a pair of connecting rods (6) and a pair of clamps (7), wherein the left end of the electromagnet A (3) is fixed with the connecting rod (6) on the left side, the right end of the electromagnet B (4) is fixed with the connecting rod (6) on the right side, the left end of the spring (5) is fixed with the right end of the electromagnet A (3), the right end of the spring (5) is fixed with the left end of the electromagnet B (4), the pair of connecting rods (6) drive the pair of clamps (7) to rotate through the rotating shaft (2), the pair of clamps (7) are positioned on the left side and the right side of a side wall (18) of a door curtain sliding sleeve (17), the electromagnet A (3) and the electromagnet B (4) are provided with a power supply loop (24), and the; the electromagnetic switch (19) is composed of a movable electromagnet (20) and a fixed electromagnet (21), a power supply loop (24) is disconnected in the electromagnetic switch (19), the left side and the right side of a disconnection point of the electromagnetic switch are respectively provided with a fixed electrode A (22) and an electrode B (23), the power supply loops of the movable electromagnet (20) and the fixed electromagnet (21) are connected with an outgoing line of a stator coil (14) of a semicircular stator (9) of the trigger device (8), when the current of the movable electromagnet (20) and the current of the fixed electromagnet (21) are smaller than a certain value, only attraction force is generated between the movable electromagnet (20) and the fixed electromagnet (21), the movable electromagnet and the fixed electromagnet do not move, the electrode A (22) and the electrode B (23) are not in contact, and when the current of the movable electromagnet (20) and the fixed electromagnet (21; the trigger device (8) is composed of a semicircular stator (9), a rotor (10), a rotor shaft (12) and a stator shell (13), wherein the rotor (10) is provided with a plurality of permanent magnets (11) which are uniformly distributed, the front inner side and the rear inner side of the stator shell (13) of the semicircular stator (9) are fixed with stator coils (14), the left half part of the rotor (10) is exposed out of the stator shell (13), the rim of the rotor (10) is provided with a friction surface, the rim of the left end of the rotor (10) is propped against the inner surface of the side wall of a left door curtain sliding sleeve (17), and the stator shell (13) is fixed with a hinge (16); the working principle is as follows: when a curtain (15) of the rolling door is driven by a driving device to rise and stop, an electromagnet A (3) and an electromagnet B (4) of a jaw device (1) are simultaneously electrified, the electromagnet A (3) and the electromagnet B (4) attract each other, a spring (5) is elastically compressed and drives a pair of connecting rods (6) to rotate inwards, the pair of connecting rods (6) drive a pair of jaws (7) to rotate inwards, the pair of jaws (7) clamp a side wall (18) of a curtain sliding sleeve (17), at the moment, no matter whether a chain wheel of the driving device of the curtain (15) is unhooked, broken or other abnormal conditions, the pair of jaws (7) of the jaw device (1) can prevent the curtain (15) from falling, when the curtain (15) of the rolling door is driven by the driving device to fall, the electromagnet A (3) and the electromagnet B (4) of the jaw device (1) are powered off, and the electromagnet A (3) and the electromagnet B (4) lose attraction force, the spring (5) extends elastically and drives the pair of jaws (7) to rotate outwards, the pair of jaws (7) loosens the side wall (18) of the door curtain sliding sleeve (17), the door curtain (15) slides downwards at a normal speed, meanwhile, the rotor (10) of the trigger device (8) rotates at the normal speed along with the sliding of the door curtain (15), a plurality of permanent magnets (11) which are uniformly distributed on the rotor (10) sweep the stator coil (14) of the semicircular stator (9), the generated induced current is small, the movable electromagnet (20) and the fixed electromagnet (21) of the electromagnetic switch (19) only generate attraction force under the action of the small induced current, but do not move mutually, the electrode A (22) and the electrode B (23) are kept in a disconnected state, and if abnormal conditions such as unhooking, breaking and the like happen to a chain wheel of a driving device of the door curtain (15), the door curtain (15) suddenly drops, and the rotor (10) of the trigger device (8) is driven to accelerate suddenly, the generated induced current is increased suddenly, the increased induced current increases the attraction force between a movable electromagnet (20) and a fixed electromagnet (21) of an electromagnetic switch (19), the movable electromagnet (20) and the fixed electromagnet (21) attract each other and drive an electrode A (22) to be in contact with an electrode B (23), the power supply of an electromagnet A (3) and an electromagnet B (4) of a jaw device (1) is switched on, the electromagnet A (3) and the electromagnet B (4) attract each other, a spring (5) is elastically compressed and drives a pair of jaws (7) to clamp the side wall (18) of a door curtain sliding sleeve (17), and the door curtain (15) is prevented from dropping.

Drawings

1-clamping device, 2-rotating shaft, 3-electromagnet A, 4-electromagnet B, 5-spring, 6-connecting rod, 7-clamping jaw, 8-trigger device, 9-semicircular stator, 10-rotor, 11-permanent magnet, 12-rotor shaft, 13-stator shell, 14-stator coil, 15-door curtain, 16-loose leaf, 17-door curtain sliding sleeve, 18-side wall, 19-electromagnetic switch, 20-movable electromagnet, 21-fixed electromagnet, 22-electrode A, 23-electrode B and 24-power supply loop.

FIG. 1 is an elevational schematic view of the clamping arrangement and trigger arrangement of the present invention disposed on a tambour door.

Fig. 2 is a horizontal cross-sectional view of the jaw assembly.

Fig. 3 is an elevational view of the trigger device.

Fig. 4 is an exploded perspective view of the trigger device.

Fig. 5 is a cross-sectional view a-a of the trigger device.

Fig. 6 is a cross-sectional view of the electromagnetic switch.

Detailed Description

Referring to fig. 1 to 6, when the curtain 15 of the roll-up door is lifted and stopped by the driving device, the electromagnet A3 and the electromagnet B4 of the jaw device 1 are simultaneously energized, the electromagnet A3 and the electromagnet B4 attract each other, the spring 5 is elastically compressed and drives the pair of connecting rods 6 to rotate inwards, the pair of connecting rods 6 drives the pair of jaws 7 to rotate inwards, the pair of jaws 7 clamp the side wall 18 of the curtain sliding sleeve 17, at this time, the pair of jaws 7 of the jaw device 1 can prevent the curtain 15 from dropping regardless of the unhooking, breaking or other abnormal conditions of the chain wheel of the driving device of the curtain 15, when the curtain 15 of the roll-up door is lowered by the driving device, the electromagnet A3 and the electromagnet B4 of the jaw device 1 are powered off, the electromagnet A3 and the electromagnet B4 lose the attraction force, the spring 5 elastically extends and drives the pair of jaws 7 to rotate outwards, the pair of jaws 7 releases the side wall 18 of the curtain sliding sleeve 17, the door curtain 15 slides downwards at a normal speed, simultaneously the rotor 10 of the trigger device 8 rotates at the normal speed along with the sliding of the door curtain 15, the plurality of permanent magnets 11 which are uniformly distributed on the rotor 10 sweep across the stator coil 14 of the semicircular stator 9, the induced current generated is relatively small, the movable electromagnet 20 and the fixed electromagnet 21 of the electromagnetic switch 19 only generate attraction force under the action of the small induced current, but do not move mutually, the electrode A22 and the electrode B23 are kept in a disconnected state, if abnormal conditions such as unhooking and breaking occur to a chain wheel of a driving device of the door curtain 15, the door curtain 15 suddenly drops and drives the rotor 10 of the trigger device 8 to suddenly accelerate, the generated induced current is suddenly increased, the increased induced current increases the attraction force between the movable electromagnet 20 and the fixed electromagnet 21 of the electromagnetic switch 19, the movable electromagnet 20 and the fixed electromagnet 21 attract mutually and drive the electrode A22 to contact with the electrode B23, the power supply of the electromagnet A3 and the electromagnet B4 of the clamping device 1 is switched on, the electromagnet A3 and the electromagnet B4 attract each other, the spring 5 elastically compresses, and the pair of jaws 7 are driven to clamp the side wall 18 of the door curtain sliding sleeve 17, so that the door curtain 15 is prevented from dropping.

Claims (1)

1. The utility model provides a pincers clamp formula rolling slats door anti-falling device which characterized by: the device consists of a clamping device (1) and a trigger device (8); a rotating shaft (2) of the clamping device (1) is fixed with a hinge (16) at the lowest part of a curtain (15) of the rolling door; the clamping device (1) comprises a rotating shaft (2), an electromagnet A (3), an electromagnet B (4), a spring (5), a pair of connecting rods (6) and a pair of clamps (7), wherein the left end of the electromagnet A (3) is fixed with the connecting rod (6) on the left side, the right end of the electromagnet B (4) is fixed with the connecting rod (6) on the right side, the left end of the spring (5) is fixed with the right end of the electromagnet A (3), the right end of the spring (5) is fixed with the left end of the electromagnet B (4), the pair of connecting rods (6) drive the pair of clamps (7) to rotate through the rotating shaft (2), the pair of clamps (7) are positioned on the left side and the right side of a side wall (18) of a door curtain sliding sleeve (17), the electromagnet A (3) and the electromagnet B (4) are provided with a power supply loop (24), and the; the electromagnetic switch (19) is composed of a movable electromagnet (20) and a fixed electromagnet (21), a power supply loop (24) is disconnected in the electromagnetic switch (19), the left side and the right side of a disconnection point of the electromagnetic switch are respectively provided with a fixed electrode A (22) and an electrode B (23), the power supply loops of the movable electromagnet (20) and the fixed electromagnet (21) are connected with an outgoing line of a stator coil (14) of a semicircular stator (9) of the trigger device (8), when the current of the movable electromagnet (20) and the current of the fixed electromagnet (21) are smaller than a certain value, only attraction force is generated between the movable electromagnet (20) and the fixed electromagnet (21), the movable electromagnet and the fixed electromagnet do not move, the electrode A (22) and the electrode B (23) are not in contact, and when the current of the movable electromagnet (20) and the fixed electromagnet (21; the trigger device (8) is composed of a semicircular stator (9), a rotor (10), a rotor shaft (12) and a stator shell (13), wherein the rotor (10) is provided with a plurality of permanent magnets (11) which are uniformly distributed, the front inner side and the rear inner side of the stator shell (13) of the semicircular stator (9) are fixed with stator coils (14), the left half part of the rotor (10) is exposed out of the stator shell (13), the rim of the rotor (10) is provided with a friction surface, the rim of the left end of the rotor (10) is propped against the inner surface of the side wall of a left door curtain sliding sleeve (17), and the stator shell (13) is fixed with a hinge (16); the working principle is as follows: when a curtain (15) of the rolling door is driven by a driving device to rise and stop, an electromagnet A (3) and an electromagnet B (4) of a jaw device (1) are simultaneously electrified, the electromagnet A (3) and the electromagnet B (4) attract each other, a spring (5) is elastically compressed and drives a pair of connecting rods (6) to rotate inwards, the pair of connecting rods (6) drive a pair of jaws (7) to rotate inwards, the pair of jaws (7) clamp a side wall (18) of a curtain sliding sleeve (17), at the moment, no matter whether a chain wheel of the driving device of the curtain (15) is unhooked, broken or other abnormal conditions, the pair of jaws (7) of the jaw device (1) can prevent the curtain (15) from falling, when the curtain (15) of the rolling door is driven by the driving device to fall, the electromagnet A (3) and the electromagnet B (4) of the jaw device (1) are powered off, and the electromagnet A (3) and the electromagnet B (4) lose attraction force, the spring (5) extends elastically and drives the pair of jaws (7) to rotate outwards, the pair of jaws (7) loosens the side wall (18) of the door curtain sliding sleeve (17), the door curtain (15) slides downwards at a normal speed, meanwhile, the rotor (10) of the trigger device (8) rotates at the normal speed along with the sliding of the door curtain (15), a plurality of permanent magnets (11) which are uniformly distributed on the rotor (10) sweep the stator coil (14) of the semicircular stator (9), the generated induced current is small, the movable electromagnet (20) and the fixed electromagnet (21) of the electromagnetic switch (19) only generate attraction force under the action of the small induced current, but do not move mutually, the electrode A (22) and the electrode B (23) are kept in a disconnected state, and if abnormal conditions such as unhooking, breaking and the like happen to a chain wheel of a driving device of the door curtain (15), the door curtain (15) suddenly drops, and the rotor (10) of the trigger device (8) is driven to accelerate suddenly, the generated induced current is increased suddenly, the increased induced current increases the attraction force between a movable electromagnet (20) and a fixed electromagnet (21) of an electromagnetic switch (19), the movable electromagnet (20) and the fixed electromagnet (21) attract each other and drive an electrode A (22) to be in contact with an electrode B (23), the power supply of an electromagnet A (3) and an electromagnet B (4) of a jaw device (1) is switched on, the electromagnet A (3) and the electromagnet B (4) attract each other, a spring (5) is elastically compressed and drives a pair of jaws (7) to clamp the side wall (18) of a door curtain sliding sleeve (17), and the door curtain (15) is prevented from dropping.

Images