CN109019229B - Elevator brake control device and elevator - Google Patents
Elevator brake control device and elevator Download PDFInfo
- Publication number
- CN109019229B CN109019229B CN201710437689.8A CN201710437689A CN109019229B CN 109019229 B CN109019229 B CN 109019229B CN 201710437689 A CN201710437689 A CN 201710437689A CN 109019229 B CN109019229 B CN 109019229B
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- block
- control device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Control (AREA)
Abstract
The invention provides an elevator brake control device, which comprises at least one group of brake components arranged on an elevator car; a control unit for controlling the brake assembly with electronic signals according to elevator car information; the elevator brake control device controls the brake assembly through the control unit and enables the brake assembly to brake and/or reset the elevator by means of electromagnetic force. The invention also provides an elevator with the elevator brake control device. The invention is an improved safety braking system, which cancels a subsystem consisting of a mechanical speed limiter, a tension wheel and a steel wire rope, overcomes the defects of the published proposal and enlarges the application range of the braking device.
Description
Technical Field
The invention relates to an accessory of an elevator, in particular to an elevator brake control device. The invention also relates to an elevator adopting the elevator brake control device.
Background
Current elevators typically contain a safety system consisting of a braking device, a mechanical governor, a tension sheave and a wire rope. The subsystem consisting of the speed limiter, the tension wheel and the steel wire rope has two functions, namely detecting the running speed of the elevator and triggering the braking device to brake when the running speed exceeds a preset speed. Generally, the governor is installed at a position above the hoistway or on a machine room floor, the tension pulley is installed in a pit, and the wire rope forms a closed loop between the governor and the tension pulley. When the elevator is detected to exceed the preset speed, the speed limiter acts, a lifting rod of the braking device is lifted through a steel wire rope, a brake block is pushed to clamp a guide rail, and braking force is generated.
A disadvantage of this braking system is that the speed limiter generally contains bearings and gears, is expensive to manufacture, and is prone to noise generation during normal elevator operation. The system can not be automatically reset after being braked, and manual intervention is needed for resetting; in addition, the installation of the speed limiter and the tension pulley needs to occupy the space of a machine room and a well.
Patent CN200480001100 discloses an elevator emergency braking device, in which an electromagnet is energized to generate electromagnetic force to overcome the thrust of an elastic element and hold a wedge in a proper position when an elevator works normally, and in an emergency, the electromagnet is de-energized and the wedge is in contact with a guide rail under the push of the elastic element to perform friction braking. The disadvantage is that the braking component generally needs to move dozens or even dozens of millimeters in the braking process, so the distance between two poles of the electromagnet is too large after braking is finished, and the resetting is difficult to be carried out by utilizing the electromagnetic force. This patent also discloses another solution where the driving part pushes the movable part so that the contact part presses against the guide rail, and the friction between the contact part and the guide rail pushes the wedge upwards to brake. The disadvantage is that the movement of the wedge is not directly driven by the drive but by a set of mechanisms, which results in a longer response time and an increased installation space of the braking device.
Disclosure of Invention
The present invention has been made in view of the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a brake control device for an elevator, which can be operated under the control of an electronic control signal to perform emergency braking on an elevator car or an elevator balance mass, and can be reset by the electronic control signal after the braking is finished; the elevator brake control device can accurately adjust the position of the brake block through the electromagnetic actuator so as to adapt to guide rails with different specifications.
In order to achieve the above object, the present invention provides an elevator brake control device including: at least one set of brake assemblies disposed on the elevator car; a control unit for controlling the brake assembly with electronic signals according to elevator car information; the brake control device controls the brake assembly through the control unit and enables the brake assembly to brake and reset the elevator by means of electromagnetic actuating force.
Preferably, each set of brake assemblies comprises: a support member for supporting the brake assembly; the brake block comprises a braking surface and a guided surface, and the braking surface is used for contacting or separating an elevator guide rail to brake or reset the elevator; the guide block comprises a guide surface and a connecting surface, the guide surface is used for guiding the brake block to be in contact with or separated from the elevator guide rail, and the connecting surface is fixedly connected with the supporting component; at least one set of brake assemblies includes: and the electromagnetic actuating part is used for receiving the electronic signal of the control unit and generating electromagnetic action force to control the position and the movement direction of the brake block.
Preferably, the set of brake assemblies further comprises: and the elastic energy storage element is fixedly connected with the brake block, and the pushing force or the traction force generated by the elastic energy storage element on the brake block is used for controlling the movement position and the movement direction of the brake block.
Preferably, the electromagnetic actuating member is an electromagnetic actuator disposed between the guided surface of the brake block and the guide surface of the guide block, and the electromagnetic actuator includes a movable portion and a fixed portion, and a coil is disposed on the movable portion and the fixed portion, and a current flows through the coil to generate an acting force between the movable portion and the fixed portion.
Preferably, the electromagnetic actuating part is an electromagnetic actuator, which is arranged between the guided surface of the brake block and the guide surface of the guide block, and the electromagnetic actuator comprises a movable part and a fixed part, wherein the movable part is provided with a permanent magnet or a coil, and the fixed part is correspondingly provided with a coil or a permanent magnet.
Preferably, a position code strip is arranged on the fixing part, the code strip carries out position coding on the whole length of the fixing part, and each code corresponds to a unique position on the fixing part; a code strip position detecting portion is provided on the movable portion, and reads position information on the position code strip to determine a position of the movable portion with respect to the fixed portion.
During normal elevator operation, the relative position between the guide block and the brake block is maintained by means of electromagnetic force. Since the electromagnetic actuator is divided into the fixed portion and the movable portion, the electromagnetic actuator can detect the position of the movable portion with respect to the fixed portion and also can detect the electromagnetic force between the movable portion and the fixed portion. The relative position information and the electromagnetic force information of the movable part and the fixed part are transmitted to the control unit through the transmission unit. The fixed part and the movable part of the electromagnetic actuator can maintain relative positions under the control of the control unit and can also generate relative movement. The control unit controls the electromagnetic actuator based on the relative positions of the fixed part and the movable part and the force between the fixed part and the movable part. The control unit controls the electromagnetic actuator based on feedback control of the relative position between the fixed part and the movable part. The control unit controls the electromagnetic actuator based on a force feedback control between the fixed part and the movable part.
Preferably, the set of brake assemblies further comprises an elastic body which is fixedly connected with the guide block and can enable the brake block to generate pressing force on the guide rail through the guide block.
Preferably, a guide structure is provided between the guide block and the brake block, and the guide structure guides the relative movement between the guide block and the brake block.
Preferably, the guide structure is: a boss or a groove is arranged on the guide surface, and a groove or a boss is correspondingly arranged on the guided surface; the guide structure further comprises rolling members disposed on the guide surface or the guided surface.
Preferably, the guide structure comprises a guide mechanism frame and rolling members mounted on the guide mechanism frame.
Preferably, the braking assemblies are at least two sets.
Preferably, the brake blocks of each set of brake assemblies are connected by a linkage mechanism to enable the sets of brake assemblies to be linked to contact or separate the guide rails.
Preferably, an electromagnetic actuating part is arranged between the brake blocks and the guide blocks of at least one group of brake assemblies, and rolling parts are arranged between the brake blocks and the guide blocks of the rest brake assemblies.
The invention also provides an elevator with the elevator brake control device, which comprises a car, wherein the car is movably arranged in the guide rail and can move up and down along the guide rail; and an elevator brake control device is fixedly arranged at the bottom or the top of the car.
Preferably, the elevator of the elevator brake control apparatus further comprises: the detection unit detects the speed, the position, the acceleration and the car door state information of the car; and the transmission unit is used for transmitting the state information of the lift car or the lift car door to the control unit.
The detection unit can detect absolute position information, speed information, acceleration information and car door opening and closing state information of the elevator car. The transmission unit can transmit car speed, acceleration, position and car door state information, position information of the movable part and the fixed part of the electromagnetic actuator and electromagnetic force information between the movable part and the fixed part of the electromagnetic actuator to the control unit, the control unit judges and controls the state of the emergency braking device through logic, and feedback control is carried out on the electromagnetic actuator according to the relative position information and the electromagnetic force information of the movable part and the fixed part of the electromagnetic actuator, so that accurate control is realized.
During the normal operation of the elevator, the control unit judges that the elevator is in a normal operation state at the moment according to the position information, the speed information, the acceleration information and the state information of the opening and closing of the elevator car, the control unit controls the electromagnetic actuator to overcome the acting force of the elastic element to keep the wedge block at a proper position, and a certain gap is formed between the braking surface of the brake block and the side surface of the guide rail at the moment.
When the elevator needs to be restored from the braking state to the normal operation state, the elevator car is controlled to move upwards, and the control unit controls the electromagnetic actuator to enable the brake block to move downwards relative to the frame and overcome the acting force of the elastic element until the brake block is restored to the proper position and maintains the position.
Under various working conditions, the controller performs feedback control on the wedge block according to the feedback relative position information and electromagnetic force information of the fixed part and the movable part of the electromagnetic actuator so as to ensure the control precision.
In the case of de-energizing the electromagnetic actuator, the elastic element can independently push the wedge block to move upwards relative to the frame, making contact with the guide rail and generating sufficient braking force.
The gap between the braking surface of the brake block and the side surface of the guide rail can be adjusted by the electromagnetic actuator, so that one set of braking device can be suitable for guide rails with different specifications.
When the elevator runs downwards and exceeds the expected running speed, an electromagnetic actuator arranged between the guide block and the brake block generates electromagnetic force for pushing the wedge block to run upwards relative to the frame of the safety gear, the electromagnetic force and the elastic force of the elastic element push the lower brake block to move upwards relative to the frame and contact with the guide rail until the brake block contacts with the upper plate of the frame, and the braking force generated between the brake block and the guide rail has the effect of reducing the speed of the elevator car.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
fig. 1 is a schematic view of an elevator having an elevator brake control apparatus of the present invention.
Fig. 2 is a schematic diagram of an elevator brake control apparatus (non-braking state) of the present invention.
Fig. 3 is a schematic diagram of an elevator brake control device (braking state) according to the present invention.
Fig. 4 is a control schematic diagram of the elevator brake control apparatus of the present invention.
Fig. 5 is a schematic view of the elevator brake control device according to the present invention based on the feedback control of the relative position of the movable part and the fixed part.
Fig. 6 is a schematic view of feedback control of the elevator brake control device according to the present invention based on the electromagnetic force between the movable part and the fixed part.
Fig. 7 is a schematic view of an embodiment of an electromagnetic actuator in the elevator brake control apparatus of the present invention.
Fig. 8 is a schematic view of another embodiment of an electromagnetic actuator in the elevator brake control apparatus of the present invention.
Fig. 8-1 is a schematic diagram of a method for detecting another embodiment of an electromagnetic actuator in an elevator brake control apparatus of the present invention.
Fig. 9 is a schematic view showing that the elevator brake control apparatus of the present invention is applied to guide rails of different specifications.
Fig. 10 is a schematic view of an elevator brake control apparatus of the present invention employing multiple sets of brake assemblies.
Fig. 11 is a schematic view of a first embodiment of an elevator brake control apparatus of the present invention employing a plurality of sets of brake assemblies connected using a link mechanism.
Fig. 12 is a schematic view of a second embodiment of the elevator brake control apparatus of the present invention employing a plurality of sets of brake assemblies connected using a link mechanism.
Fig. 13 is a schematic view of an embodiment of a guide mechanism of an elevator brake control device of the present invention.
Fig. 14 is a schematic view of another embodiment of a guide mechanism of an elevator brake control device of the present invention.
Description of reference numerals:
1 cage 10 elevator
1a upper guide 1b lower guide
2 track 20 run way
3 braking assembly of elevator braking control device 30
31 brake shoe 31a
32 support frame 32a frame upper plate
33 elastic element
35 guide block 35a cylindrical rolling body
36 elastomer
4 detection unit
44 fixed part code belt 45 code belt position detecting part
5 Transmission Unit
61 guide structure
61a cylindrical rolling element 61b guide mechanism frame
71-74, 76 connecting rod
8 electromagnetic actuator
8a electromagnetic actuator movable part 8b electromagnetic actuator fixed part
81 support 82 a-82 e coil two
83 iron core 84 coil one
85 permanent magnet 86 mounting plate
9 control unit
Detailed Description
As shown in fig. 1, the elevator 10 with the elevator brake control device 3 of the invention comprises a car 1, a T-shaped guide rail 2 is fixedly arranged in a running channel 20 of the car 1, the car 1 is movably arranged in the T-shaped guide rail 2, and the car 1 can run up and down along the T-shaped guide rail 2; the upper and lower parts of the car 1 are provided with guides 1a and 1b, respectively.
As shown in fig. 2, the elevator brake control device 3 includes a brake assembly 30, the brake assembly includes a brake block 31, the brake block 31 is disposed on one side of the guide rail 2, and an included angle is formed between a braking surface (i.e., a front surface close to the guide rail 2) and a guiding surface (i.e., a back surface far from the guide rail 2) of the brake block 31, so that the brake block 31 is wedge-shaped (i.e., the guiding surface of the brake block 31 is an inclined surface); the braking surface of the brake shoe 31 is parallel to the side surface of the guide rail 2, and an included angle is formed between the guiding surface of the brake shoe 31 and the side surface of the guide rail 2.
The guide block 35 is fixedly connected with the support frame 32 through an elastic body 36; the support frame 32 is fixedly connected with the car 1; the brake block 31 is connected to the support frame 32 by means of an elastic member; the actuator 8 is used for keeping the position of the brake block 31 and limiting the movement direction of the brake block; the elastic body 36 can cause the brake shoe 31 to generate a pressing force against the rail 2.
The electromagnetic actuator 8 is composed of a movable portion 8a and a fixed portion 8b, 8a being fixedly attached to the guide surface of the brake pad 31 (i.e., the back surface away from the guide rail 2), and 8b being fixedly attached to the side surface of the guide block 35 close to the brake pad 31.
The contact surface of the guide block 35 with the actuator fixing portion 8b is a slope whose angle of inclination matches the guide surface of the brake pad 31 to ensure that the braking surface of the brake pad 31 is parallel to the side surface of the guide rail 2.
The brake assemblies 30 can be respectively arranged on two sides of the guide rail 2, namely, each side surface of the guide rail 2 is correspondingly provided with a brake block 31; it is also possible to provide the brake assembly 30 on only one side of the rail 2, i.e. to provide one of the sides of the rail 2 with a brake shoe 31.
The elevator brake control device 3 is further provided with an elastic member 33 fixed to the support frame, one end of the elastic member 33 is fixed to the support frame, and the other end of the elastic member is fixedly connected to the brake block 31, and the pushing force or the traction force generated by the elastic member 33 to the brake block 31 is used for controlling the position and the moving direction of the brake block 31.
The elevator brake control 3 also comprises a control unit 9 which controls the brake assembly 30 with electronic signals according to the elevator car 1 information; and the brake assembly 30 brakes, resets and adjusts the elevator by means of electromagnetic power.
The operating principle of the elevator brake control device 3 is as follows:
fig. 2 is a schematic view of the elevator brake control device 3 in a non-operating state in which a gap is present between the braking surface of the brake shoe 31 and the guide rail 2, and the position of the brake shoe 31 is maintained by feedback control of the control unit 9.
When the brake block 31 needs to move in a direction close to the upper plate 32a of the frame, the actuator 8 generates an electromagnetic force that pushes the brake block 31 to move, and together with the elastic force of the elastic member 33, pushes the brake block 31 to move upward along the guide rail 2 relative to the support frame 32 (the brake block 31 still keeps moving downward relative to the guide rail 2), so that the gap between the brake block 31 and the guide rail 2 is gradually reduced until the brake block 31 contacts the guide rail 2 and generates a sliding friction force. As the brake shoe 31 moves downward relative to the rail 2, the sliding friction force between the brake shoe 31 and the rail 2, which moves the brake shoe 31 in a direction closer to the frame upper plate 32a until the brake shoe 31 contacts the frame upper plate 32a, is directed upward; figure 3 shows the brake shoe in contact with the upper plate 32 a. As the brake shoe 31 approaches the frame upper plate 32a, the sliding friction force gradually increases, and the braking force is transmitted to the car 1 through the frame upper plate 32a of the support frame 32, thereby braking the car 1 at a reduced speed.
After braking is finished, before the elevator car 1 returns to normal operation, the elevator brake control device 3 needs to be returned from the braking state (shown in fig. 3) to the normal operation state (shown in fig. 2), in the process, the car 1 slightly moves upwards, and the brake block 31 overcomes the elastic force of the elastic element 33 and moves in the direction away from the upper plate 32a of the frame under the action of the electromagnetic actuator until the brake block 31 reaches the expected position.
Fig. 4 is a control schematic diagram of the elevator brake control device, in which the detection unit 4 of the elevator 10 detects the speed, position, acceleration, and door state of the car 1, these pieces of information are transmitted to the control unit 9 via the transmission unit 5, the control unit 9 makes a logical judgment on these pieces of information, outputs a control signal, controls the electromagnetic actuator 8 via the control signal, and feeds back the relative position information and electromagnetic force information of the movable portion 8a and the fixed portion 8b of the electromagnetic actuator 8 to the control unit 9 via the transmission unit, thereby realizing feedback control of the electromagnetic actuator 8.
Fig. 5 shows that the control of the electromagnetic actuator 8 is based on the feedback of the relative positions of the movable portion 8a and the fixed portion 8 b.
Fig. 6 shows that the control of the electromagnetic actuator 8 is based on the feedback of the electromagnetic force between the movable portion 8a and the fixed portion 8 b.
Fig. 7 shows a version of an electromagnetic actuator, the actuator 8 being composed of a movable part 8a and a fixed part 8b, wherein the movable part 8a is composed of an iron core 83 and a first coil 84 fixed to the iron core 83; the fixed portion 8b is composed of a support 81 and two coils 82a to 82e fixed to the support 81. When a sinusoidal current is applied to the second coils 82a to 82e, an air-gap magnetic field is generated, when the sinusoidal current changes, the air-gap magnetic field moves linearly along the length direction of the supporting plate 81, the first coil 84 in the movable portion 8a cuts magnetic lines in the moving magnetic field, an electromotive force is induced and a current is generated, and the current and the air-gap magnetic field in the first coil 84 interact to generate an electromagnetic force which pushes the movable portion 8a to move relative to the fixed portion 8 b. The speed and position of the movement of the movable part 8a relative to the fixed part 8b can be controlled by varying the current in the coils 82 a-82 e.
Fig. 8 shows another version of the actuator, the movable part 8a of the electromagnetic actuator 8 being composed of a mounting plate 86 and a permanent magnet 85 mounted on the mounting plate 86; the fixed portion 8b is composed of a support 81 and two coils 82a to 82e fixed to the support 81. Similar to the principle shown in fig. 7, when the sinusoidal current in the two coils 82a to 82e changes, the air-gap magnetic field will move linearly along the length direction of the supporting plate 81, and when the current passes through the two coils 82a to 82e, the air-gap magnetic field will move linearly along the length direction of the supporting plate 81, and an electromagnetic force is generated between the permanent magnet 85 in the movable part 8a and the air-gap magnetic field, and the electromagnetic force pushes the movable part 8a to move relative to the fixed part 8 b. The speed and position of the relative movement of the movable part 8a with respect to the fixed part 8b are controlled by varying the current in the coils 82a to 82 e. Meanwhile, as shown in fig. 8-1, a position fixing portion code strip 44 may be provided on the fixing portion 8b, the fixing portion code strip 44 may position-encode the entire length of the fixing portion 8b, each code corresponds to a unique position on the fixing portion 8b, a code strip position detecting portion 45 may be fixedly attached to the movable portion 8a, and the detecting portion 45 may read position information on the fixing portion code strip 44 to determine the position of the movable portion 8a with respect to the fixing portion 8 b.
Fig. 9 shows a situation that the elevator brake control device 3 is suitable for guide rails of different specifications, and the brake block 31 can change its initial position through the electromagnetic actuator 8 under the control of the control unit 9, so that the same set of elevator brake control device 3 can be controlled and adjusted to be suitable for guide rails 2 of different specifications. When the size of the rail is changed from the small size 2a to the large size 2b, the position of the brake shoe 31 can be appropriately lowered to secure a gap between the brake shoe 31 and the side of the rail.
Fig. 10 is a schematic view of an elevator brake control apparatus using a plurality of brake assemblies, in which an electromagnetic actuator 8 is provided between one set of brake shoes 31 and a guide block 35, and a guide structure 61 is provided between the remaining brake shoes 31 and the guide block 35.
Fig. 11 shows an embodiment of the elevator brake control apparatus using a plurality of brake assemblies, in which a link mechanism (including a link 71, a link 72, a link 73, a link 74, and a link 76) connecting the brake devices disposed up and down along the guide rail and the brake devices on the left and right sides of the guide rail is provided between the brake shoe 31 connected to the electromagnetic actuator 8 and the remaining brake shoe 31. While the brake shoe 31 connected to the electromagnetic actuator 8 is held in place by the electromagnetic actuator 8, the remaining brake shoes 31 are also held in place by the action of the linkage mechanism. When the brake block is triggered, the brake block 31 connected with the electromagnetic actuator 8 moves upwards under the action of the electromagnetic force of the electromagnetic actuator and the elastic element 33, and meanwhile, the link mechanism is driven to move, so that the rest brake blocks 31 move upwards synchronously, and the purpose of braking is achieved.
Fig. 12 shows another embodiment of the elevator brake control apparatus using a plurality of brake assemblies, in which two electromagnetic actuators are provided, and a link mechanism (including a link 71, a link 72, a link 73, and a link 74) connects only the brake apparatuses 3 disposed up and down along the guide rail.
Fig. 13 shows an embodiment of a guide mechanism of an elevator brake control device, which is formed by combining corresponding structures of a guide block 35 and a brake block 31. The dovetail boss on the guide block 35 cooperates with the dovetail groove on the brake pad 31 to guide the movement of the brake pad 31. Two rows of cylindrical rolling elements 35a are mounted on the guide block 35, which can reduce the friction on the guide surface when the brake block 31 moves, and can also transmit the normal acting force of the guide surface of the brake wedge 31 to the guide block 35 when the emergency device acts, so as to protect the electromagnetic actuator 8.
Fig. 14 shows an embodiment of a guide for an elevator emergency brake, the guide 61 being a separate part consisting of several cylindrical rolling elements 61a and a guide frame 61 b. The guide mechanism frames 61b on both sides are fixed to guide the movement of the brake pad 31. Cylindrical rolling elements 61a are mounted on the guide frame 61b and serve to reduce the friction on the guide surface when the brake pad 31 is in motion, and to transmit the normal force of the guide surface of the brake pad 31 to the guide block 35 when the emergency device is in motion, thus protecting the electromagnetic actuator 8.
The invention is an improved safety braking system, which cancels a subsystem consisting of a mechanical speed limiter, a tension wheel and a steel wire rope, overcomes the defects of the published proposal and enlarges the application range of the braking device.
Claims (11)
1. An elevator brake control apparatus, comprising:
at least one set of brake assemblies disposed on the elevator car;
a control unit for controlling the brake assembly with electronic signals according to elevator car information;
the elevator brake control device controls the brake component through the control unit and enables the brake component to brake and/or reset the elevator by means of electromagnetic actuating force,
each set of brake assemblies includes: a support member for supporting the brake assembly; the brake block comprises a braking surface and a guided surface, and the braking surface is used for contacting or separating an elevator guide rail to brake or reset the elevator; the guide block comprises a guide surface and a connecting surface, the guide surface is used for guiding the brake block to be in contact with or separated from the elevator guide rail, and the connecting surface is fixedly connected with the supporting component; at least one set of brake assemblies includes: the electromagnetic actuating component is used for receiving the electronic signal of the control unit and generating electromagnetic action force to control the position and the movement direction of the brake block;
the set of brake assemblies further includes: an elastic energy storage element fixedly connected with the brake block, wherein the pushing force or the traction force generated by the elastic energy storage element on the brake block is used for controlling the position and the movement direction of the brake block,
the electromagnetic actuating part is an electromagnetic actuator and is arranged between the guided surface of the braking block and the guide surface of the guide block, the electromagnetic actuator comprises a movable part and a fixed part, coils are arranged on the movable part and the fixed part, and current flows through the coils to generate acting force between the movable part and the fixed part;
the fixing part is provided with a position code belt, the code belt carries out position coding on the whole length of the fixing part, and each code corresponds to a unique position on the fixing part; a code strip position detecting portion is provided on the movable portion, and reads position information on the position code strip to determine a position of the movable portion with respect to the fixed portion.
2. The elevator brake control device according to claim 1, wherein the electromagnetic actuating member is an electromagnetic actuator provided between the guided surface of the brake shoe and the guide surface of the guide shoe, and the electromagnetic actuator includes a movable portion provided with a permanent magnet or a coil and a fixed portion provided with a coil or a permanent magnet, respectively.
3. The elevator brake control device of claim 1, wherein the set of brake assemblies further comprises an elastomer fixedly attached to the guide block and operable to cause the brake block to exert a compressive force against the guide rail via the guide block.
4. An elevator brake control device according to any one of claims 1 to 3, wherein a guide structure is provided between the guide block and the brake block, said guide structure guiding relative movement between the guide block and the brake block.
5. The elevator brake control device according to claim 4, wherein the guiding structure is provided with a boss or a groove on the guiding surface, and a groove or a boss is correspondingly provided on the guided surface; the guide structure further comprises rolling members disposed on the guide surface or the guided surface.
6. The elevator brake control device of claim 5, wherein the guide structure comprises a guide mechanism frame and a roller mounted on the guide mechanism frame.
7. Elevator brake control device according to one of claims 1-3, characterized in that the brake assemblies are at least two groups.
8. The elevator brake control device according to claim 7, wherein the brake shoes of the brake assemblies are connected by a linkage mechanism to allow the brake assemblies to move in conjunction to contact or separate the guide rail.
9. The elevator brake control device according to claim 8, wherein an electromagnetic actuating member is provided between the brake pads and the guide blocks of at least one of the brake assemblies, and rolling members are provided between the brake pads and the guide blocks of the remaining brake assemblies.
10. An elevator having an elevator brake control device, characterized in that: the elevator car is movably arranged in the guide rail and can move up and down along the guide rail; the bottom or the top of the car is fixedly provided with the elevator brake control device of any one of claims 1-3.
11. The elevator having an elevator brake control apparatus according to claim 10, comprising:
the detection unit detects the speed, the position, the acceleration and the car door state information of the car;
and the transmission unit is used for transmitting the state information of the lift car or the lift car door to the control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710437689.8A CN109019229B (en) | 2017-06-12 | 2017-06-12 | Elevator brake control device and elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710437689.8A CN109019229B (en) | 2017-06-12 | 2017-06-12 | Elevator brake control device and elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109019229A CN109019229A (en) | 2018-12-18 |
| CN109019229B true CN109019229B (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710437689.8A Active CN109019229B (en) | 2017-06-12 | 2017-06-12 | Elevator brake control device and elevator |
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| CN (1) | CN109019229B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109516336B (en) * | 2018-12-29 | 2024-09-13 | 刘英辉 | Linear drive device, safety tongs device and control method of elevator system |
| DE202019101479U1 (en) * | 2019-03-15 | 2020-06-18 | Inventio Ag | Safety brake device |
| CN109896390B (en) * | 2019-04-04 | 2021-04-20 | 江西理工大学 | Cage protection system of high security |
| CN111977485B (en) * | 2019-05-22 | 2021-10-08 | 上海三菱电梯有限公司 | Elevator safety device and elevator |
| CN111573469A (en) * | 2020-04-24 | 2020-08-25 | 芜湖职业技术学院 | Elevator braking device |
| CN114504743B (en) * | 2022-03-24 | 2023-03-28 | 广州雅图新能源科技有限公司 | Fire rescue system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| MY143851A (en) * | 2006-12-05 | 2011-07-15 | Inventio Ag | Braking device for holding and braking a lift cabin in a lift facility |
| JP4685803B2 (en) * | 2007-01-10 | 2011-05-18 | 株式会社日立製作所 | Elevator brake control device |
| DE102014004356A1 (en) * | 2014-03-27 | 2015-10-01 | Thyssenkrupp Elevator Ag | Braking device for a car of an elevator system |
| CN203865761U (en) * | 2014-06-07 | 2014-10-08 | 苏州歌拉瑞电梯有限公司 | Electromagnetic-control elevator safety tongs |
| US20180327224A1 (en) * | 2015-11-20 | 2018-11-15 | Otis Elevator Company | Electronic safety actuator |
| CN205500496U (en) * | 2016-04-22 | 2016-08-24 | 新疆维吾尔自治区特种设备检验研究院 | Device for preventing elevator is unexpected to be removed |
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