CN114920108B - Permanent magnet synchronous motor car sliding speed control device special for elevator - Google Patents
Permanent magnet synchronous motor car sliding speed control device special for elevator Download PDFInfo
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- CN114920108B CN114920108B CN202210629955.8A CN202210629955A CN114920108B CN 114920108 B CN114920108 B CN 114920108B CN 202210629955 A CN202210629955 A CN 202210629955A CN 114920108 B CN114920108 B CN 114920108B
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims description 24
- 230000000903 blocking effect Effects 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 12
- 230000000712 assembly Effects 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 11
- 230000008093 supporting effect Effects 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 7
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/026—Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side
- B66B11/0266—Passive systems
-
- 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
-
- 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
- B66B5/24—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 by acting on guide ropes or cables
-
- 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
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/282—Structure thereof
-
- 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
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/284—Buffer-stops for cars, cages, or skips mounted on cars or counterweights
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
- B66B7/10—Arrangements of ropes or cables for equalising rope or cable tension
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention discloses a device for controlling the sliding speed of a permanent magnet synchronous motor special for an elevator, which comprises the following components: the guide rail frames are vertically and symmetrically arranged in the well; the elevator car body is vertically arranged on one side of the guide rail frame, one side of the elevator car body is fixed with a pulley block through a bracket piece, and the pulley block is connected to the guide rail frame in a sliding manner; the permanent magnet synchronous traction machine is horizontally fixed above the guide rail frame through the mounting seat, and a traction rope is arranged on the permanent magnet synchronous traction machine; the connecting frame is transversely and overhead fixed on one side of the mounting seat; the lower support frame assembly is arranged below the car main body, and one end of the lower support frame assembly is arranged on the guide rail frame in a sliding manner; the speed control protection assembly is a plurality of vertically arranged; and the enclasping wheel set is arranged on the connecting frame, and the enclasping wheel set can lock the main body of the traction rope after the sliding speed of the main body of the lift car is lower than the warning threshold value.
Description
Technical Field
The invention belongs to the technical field of elevator control equipment, and particularly relates to a device for controlling the sliding speed of a permanent magnet synchronous motor special for an elevator.
Background
The existing elevators are provided with elevator emergency circuit equipment and corresponding methods, and the elevator emergency circuit equipment and the corresponding methods are used for ensuring the completion of emergency rescue of the elevators under emergency conditions, so that the life safety of elevator passengers is ensured. At present, a permanent magnet synchronous motor is used as a low-speed elevator for driving a host machine, an emergency rescue is generally completed by adopting a method of sliding a car to a flat layer for placing people, but because the speed of sliding the elevator is difficult to control, the sliding protection of the elevator is realized only by a speed limiter with a sliding prevention device, so that the overall working intensity is high when the elevator slides, the phenomenon of internal abrasion and damage is easy to occur, and the maintenance cost is high;
therefore, a person skilled in the art provides a device for controlling the sliding speed of a permanent magnet synchronous motor special for an elevator, so as to solve the problems in the prior art.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: a permanent magnet synchronous motor car sliding speed control device special for an elevator comprises:
the guide rail frames are vertically and symmetrically arranged in the well;
the elevator car body is vertically arranged on one side of the guide rail frame, one side of the elevator car body is fixed with a pulley block through a bracket piece, and the pulley block is connected to the guide rail frame in a sliding manner;
the permanent magnet synchronous traction machine is horizontally fixed above the guide rail frame through the mounting seat, and a traction rope is arranged on the permanent magnet synchronous traction machine;
the connecting frame is transversely and overhead fixed on one side of the mounting seat, one end of the connecting frame is rotatably provided with a guide wheel, and the traction rope bypasses the guide wheel and is connected with the car body;
the lower support frame assembly is arranged below the car main body, and one end of the lower support frame assembly is arranged on the guide rail frame in a sliding manner;
the speed control protection components are vertically arranged and are transversely fixed on the guide rail frame, and the speed control protection components can be connected with one end of the lower support frame component through magnetic attraction, so that when a car body slides, the speed control protection components can effectively control the sliding speed of the car body; and
the enclasping wheel set is arranged on the connecting frame, and the enclasping wheel set can lock the main body of the traction rope after the sliding speed of the main body of the car is lower than the warning threshold value.
Further, preferably, the method further comprises:
the outer fixing pieces are symmetrically arranged at the upper end and the lower end of the guide rail frame;
the connecting rope is connected between the outer fixing pieces;
the speed measuring wheel is arranged on one side of the upper end face of the car main body in a relatively rotatable manner through the outer bracket;
the fastening wheel is arranged on the outer support, the connecting rope can bypass the speed measuring wheel and the fastening wheel, and the fastening wheel can effectively adjust the tightness of the connecting rope.
Further, preferably, the lower bracket assembly includes:
a fixed base;
the plurality of bearing frame plates are arranged in a stacked manner, the bearing frame plates are fixed with the fixed base, and the cross section of each bearing frame plate is constructed into an arc structure;
the side brackets are obliquely connected to the upper end face of the bearing frame plate in a bilateral symmetry manner, and the other ends of the side brackets are connected with the car body;
the plurality of inner springs are transversely arranged, and each inner spring is respectively connected between the bearing frame plate and the car body;
the support springs are symmetrically connected between the fixed base and the bearing frame plate;
the load carrying column is obliquely connected below the fixed base, one end of the load carrying column is provided with an outer guide seat, and the load carrying column is limited by the outer guide seat and is arranged on the guide rail frame in a sliding manner; and
the metal plate frame is fixed on one side of the outer guide seat and is connected with each speed control protection assembly under the action of magnetic attraction.
Further, preferably, an electromagnetic seat is further provided on one side of the metal plate frame.
Further, preferably, the speed control protection assembly includes:
embedding a seat;
the sealed air chambers are arranged left and right, and each group of sealed air chambers is provided with a plurality of arranged sealed air chambers;
the plunger rod is arranged in the sealing gas bin in a sliding way;
the lower connecting disc is fixed at the lower end of each plunger rod;
the outer connecting seat is vertically arranged on the lower connecting disc in a sliding manner through a limiting column, and an outer spring is vertically connected between the outer connecting seat and the lower connecting disc;
the electromagnetic piece can be arranged in the outer connecting seat in a relative transverse sliding manner, and a limiting spring is further connected between the electromagnetic piece and the outer connecting seat; and
the outer guide wheels are symmetrically arranged below the outer connecting seat in a rotating mode.
Further, preferably, the method further comprises:
the discharging cavity is transversely and correspondingly arranged on each sealing air bin positioned at the left side;
the inner driving disc is rotatably arranged in the discharging cavity, an air pressure plug is slidably arranged in the discharging cavity, and one end of the air pressure plug is connected with the inner driving disc through a supporting rod;
the connecting pipe is transversely connected between the left and right sealing gas bins;
the damping springs are vertically and symmetrically arranged in each sealing gas bin, an abutting ring is slidably arranged in each sealing gas bin, the abutting ring is connected with the damping springs, and one side of the lower end face of each sealing gas bin is provided with an air hole;
the upper cavity is correspondingly arranged in the middle of the upper end face of each sealed air bin, and the cross section of the upper cavity is of a circular structure;
the upper beam frame is transversely arranged above the sealed air bin, and a plurality of telescopic guide rods are vertically connected between the upper beam frame and the sealed air bin; and
the blocking ball body is vertically fixed on the upper beam frame and can seal and block the upper cavity.
Further, preferably, the blocking sphere can block the flow of air from the upper cavity to adjust the air flow rate.
Further, preferably, each electromagnetic member can provide an increasing magnetic attraction effect from top to bottom when the car body slides, and the blocking ball body can provide an increasing air blocking effect to the upper cavity from top to bottom.
Further, preferably, the holding wheel set includes a main wheel body and an auxiliary wheel, the auxiliary wheel is rotatably suspended on the main wheel body through a strut frame, and the strut frame deflects by an angle ranging from 15 ° to 78 °.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, one side of the car body is rotatably provided with the speed measuring wheel for measuring the speed of the car body, and a plurality of speed control protection assemblies are vertically distributed on the guide rail frame, so that the speed control protection assemblies can gradually reduce the car sliding speed of the elevator in the car sliding process, and timely stop the car sliding after the car sliding speed is lower than the warning threshold value;
2. the lower support frame assembly is arranged below the car main body, and can be used for carrying out car sliding buffer support on the car main body, so that the safety is improved;
3. the invention is also provided with the enclasping wheel set, and the enclasping wheel set can lock the traction rope on the car body after the car body sliding speed warning threshold value, thereby realizing the parking of the sliding car, so as to reduce the working strength of the enclasping wheel set and reduce the later maintenance cost.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the tachometer wheel of the present invention;
FIG. 3 is a schematic view of the structure of the lower bracket assembly of the present invention;
FIG. 4 is a schematic diagram of a speed control protection assembly according to the present invention;
FIG. 5 is a schematic view of the structure of the seal gas cartridge of the present invention;
FIG. 6 is a schematic view of the structure of the hugging wheel set of the present invention;
in the figure: the device comprises a guide rail frame 1, a permanent magnet synchronous traction machine 11, a guide wheel 12, a speed measuring wheel 13, a fastening wheel 14, an outer fixing piece 15, a car body 2, a clamping wheel set 3, a main wheel body 31, an auxiliary wheel 32, a lower supporting frame component 4, a fixed base 41, a supporting frame plate 42, a side bracket 43, an inner spring 44, a 45 load column piece, an outer guide seat 46, a metal plate frame 47, a speed control protection component 5, a sealing gas bin 51, an embedded seat 52, a lower connecting disc 53, a limiting column 54, an outer connecting seat 55, an electromagnetic piece 56, a driving inner disc 57, a damping spring 58, an abutting ring 59, an upper beam frame 510, a telescopic guide rod 511 and a blocking sphere 512.
Detailed Description
Referring to fig. 1, in an embodiment of the present invention, a device for controlling a sliding speed of a permanent magnet synchronous motor special for an elevator includes:
the guide rail frames 1 are vertically and symmetrically arranged in the well;
the elevator car comprises a car main body 2 vertically arranged on one side of a guide rail frame 1, wherein a pulley block 21 is fixed on one side of the car main body 2 through a bracket piece, and the pulley block 21 is connected to the guide rail frame 1 in a sliding manner;
the permanent magnet synchronous traction machine 11 is horizontally fixed above the guide rail frame 1 through a mounting seat, and a traction rope is arranged on the permanent magnet synchronous traction machine 11;
the connecting frame is transversely and overhead fixed on one side of the mounting seat, one end of the connecting frame is rotatably provided with a guide wheel 12, and the traction rope bypasses the guide wheel 12 and is connected with the car main body 2;
the lower support frame assembly 4 is arranged below the car main body 2, and one end of the lower support frame assembly 4 is arranged on the guide rail frame 1 in a sliding manner;
the speed control protection assemblies 5 are vertically arranged, each speed control protection assembly 5 is transversely fixed on the guide rail frame 1, and the speed control protection assemblies 5 can be connected with one end of the lower support frame assembly 4 through magnetic attraction, so that when a car body slides, the speed control protection assemblies 5 can effectively control the sliding speed of the car body; and
the holding wheel group 3 is arranged on the connecting frame, the holding wheel group 3 can lock the main body of the traction rope after the sliding speed of the car main body 1 is lower than the warning threshold value, and compared with the direct braking and locking of the holding wheel group adopted by most elevators at present, the speed control protection assembly can be used for preferentially carrying out speed reduction treatment on the speed of the elevator, and when the sliding speed is lower than the warning threshold value (generally set to be 0.25 m/s), the holding wheel group is used for working, so that the functional loss of the holding wheel group when the elevator slides is reduced, the working failure of the holding wheel group when the elevator slides at a high speed is avoided, and the later maintenance cost is reduced.
In this embodiment, the method further includes:
the outer fixing pieces 15 are symmetrically arranged at the upper end and the lower end of the guide rail frame 1;
a connecting rope connected between the outer fixing pieces 2;
the speed measuring wheel 13 is arranged on one side of the upper end face of the car main body 2 in a relatively rotatable manner through an outer bracket; the speed measuring wheel can measure the speed of the elevator in a rotating way;
the fastening wheel 14 is arranged on the outer support, the connecting rope can bypass the speed measuring wheel 13 and the fastening wheel 14, and the fastening wheel 14 can effectively adjust the tightness of the connecting rope.
As a preferred embodiment, the lower bracket assembly 4 includes:
a fixed base 41;
the plurality of bearing frame plates 42 are arranged in a stacked manner, the bearing frame plates 42 are fixed with the fixed base 41, and the cross section of each bearing frame plate 42 is constructed into an arc structure;
the side brackets 43 are connected to the upper end surface of the supporting frame plate 42 in a laterally symmetrical and inclined manner, and the other ends of the side brackets 43 are connected to the car body 2;
the inner springs 44 are arranged transversely, and each inner spring 44 is connected between the bearing frame plate 42 and the car body 2;
the supporting springs are symmetrically connected between the fixed base 41 and the bearing frame plate 42; in the elevator sliding speed reduction, the bearing frame plate can buffer the car main body under the action of elastic deformation, and meanwhile, the inner spring and the supporting spring can achieve the elastic supporting action under the compression deformation, so that the elevator sliding speed reduction device has higher safety and stability;
the load-carrying column 45 is obliquely connected below the fixed base 41, one end of the load-carrying column 45 is provided with an outer guide seat 46, and the outer guide seat 46 is arranged on the guide rail frame 1 in a limiting sliding manner; and
and a metal plate frame 47 fixed on one side of the outer guide seat 46 and connected with each speed control protection assembly 5 under the action of magnetic attraction.
In this embodiment, an electromagnetic seat is further disposed on one side of the metal plate frame 47, and it should be noted that the magnetism generated during the operation of the electromagnetic seat and the magnetism generated during the operation of the speed control protection assembly should be opposite to each other, so as to further improve the magnetic attraction strength between the lower bracket assembly and the speed control protection assembly.
In this embodiment, the speed control protection assembly 5 includes:
a nest 52;
the sealed air chambers 51 are two groups which are arranged left and right, and each group of sealed air chambers 51 is provided with a plurality of sealed air chambers which are arranged in a arrayed manner;
a plunger rod slidably disposed within the seal cartridge 51;
a lower connecting disc 53 fixed to a lower end of each of the plunger rods;
the outer connecting seat 55 is vertically arranged on the lower connecting disc 53 in a sliding manner through the limiting column 54, and an outer spring is vertically connected between the outer connecting seat 55 and the lower connecting disc 53;
the electromagnetic piece 56 is arranged in the outer connecting seat 55 in a relatively transverse sliding manner, and a limiting spring is further connected between the electromagnetic piece and the outer connecting seat; and
the outer guide wheels are symmetrically and rotatably arranged below the outer connecting seat 55, that is, when the car body slides vertically, the electromagnetic piece works to generate a magnetic attraction effect, the lower support frame component can be fixed by magnetic attraction through the metal plate frame, the outer connecting seat slides vertically along with the car body, the outer spring supports the outer connecting seat vertically, after a certain compression strength is achieved, the lower connecting disc can move vertically, the plunger rod slides relatively along the sealing air bin, and after the plunger rod reaches the limit displacement, the lower support frame component is separated from the electromagnetic piece by magnetic attraction, so that the sliding speed is controlled by magnetic attraction, elastic support and the like under multiple actions, and the use safety is high.
In this embodiment, the method further includes:
the discharging cavity is transversely and correspondingly arranged on each sealing air bin 51 positioned at the left side;
the driving inner disc 57 is rotatably arranged in the discharging cavity, an air pressure plug is slidably arranged in the discharging cavity, and one end of the air pressure plug is connected with the driving inner disc 57 through a supporting rod;
the connecting pipe is transversely connected between the left and right sealing air bins 51;
the damping springs 58 are vertically and symmetrically arranged in each sealing gas bin 51, an abutting ring 59 is slidably arranged in each sealing gas bin 51, the abutting ring 59 is connected with the damping springs 58, and one side of the lower end face of each sealing gas bin 51 is provided with an air hole;
the upper row of cavities are correspondingly arranged in the middle of the upper end face of each sealed air bin 51, and the cross section of each upper row of cavities is of a circular structure;
the upper beam frame 510 is transversely arranged above the sealed air bin 51, and a plurality of telescopic guide rods 511 are vertically connected between the upper beam frame 510 and the sealed air bin 51; and
the blocking ball 512 is vertically fixed on the upper beam 510, and the blocking ball 512 can seal and block the upper cavity, that is, when the car body slides, the damping spring in the sealing air bin can elastically support the plunger rod, so that the outer spring is matched to achieve the secondary damping effect, the sliding control effect can be improved in single sliding speed control, and the sliding distance is reduced.
As a preferred embodiment, the blocking sphere 512 can block the flow inside the upper cavity to adjust the air flow rate, wherein the plunger rod can relatively displace to seal the outside of the air chamber in a normal state (i.e. not in operation) when it contacts the abutment ring; in the elevator sliding, each plunger rod positioned below can gradually extend into the sealing air bin through the displacement sliding action of the air pressure plug (at the moment, the upper cavity is in a blocking state), when the car body is displaced to the corresponding speed control protection assembly, each upper cavity on the sealing air bin in the speed control protection assembly adjacent below the car body is in an unblocking state, and then the car body slides to the corresponding speed control protection assembly, and external air is introduced into the sealing air bin through the upper cavity by the relative displacement of the plunger rod.
In this embodiment, each electromagnetic member 56 can provide an increasing magnetic attraction effect from top to bottom when the car body 2 slides, and the blocking sphere 512 can provide an increasing air blocking effect to the upper cavity from top to bottom; particularly in the sliding, the corresponding blocking ball body can gradually block the upper cavity from top to bottom, so that the drainage gap of the upper cavity gradually becomes smaller, and the reduction state of the plunger rod relative to the displacement of the sealed gas bin from top to bottom is realized, so that the gradually enhanced sliding reduction control effect is provided; when the speed of the car is lower than 1.15m/s, the upper row cavities on the sealing air bin in each speed control protection assembly relatively positioned below the car body can be set to be in a blocking state, so that high-strength reverse pulling force is provided by the plunger rod, the car body can brake in the displacement range of the three speed control protection assemblies adjacently positioned below, the locking wheel set can perform corresponding locking work, the working strength of the locking wheel set is reduced, and the internal abrasion is reduced.
In this embodiment, the holding wheel set 3 includes a main wheel body 31 and an auxiliary wheel 32, the auxiliary wheel 32 is rotatably suspended on the main wheel body 31 by a strut frame, and the deflection angle of the strut frame ranges from 15 ° to 78 °.
Specifically, when the car main body slides, each speed control protection assembly located below the car main body starts to work at this moment, and each plunger rod can gradually extend into the sealed air bin through the displacement sliding action of the air pressure plug (when the upper discharging cavity is in a blocking state), when the car main body is displaced to the corresponding speed control protection assembly, blocking balls in each upper discharging cavity on the sealed air bin in the adjacent lower speed control protection assemblies do not block the upper discharging cavity any more under the displacement, the plunger rod slowly slides at a low speed, the lower support frame assembly can be fixed through magnetic attraction through the metal plate frame, the outer connecting seat vertically slides along with the car main body, the outer spring elastically supports the outer connecting seat, when certain compression strength is achieved, the lower connecting disc can vertically displace, so that the plunger rod relatively slides along the sealed air bin, and after the plunger rod reaches extremely limited displacement, the lower support frame assembly is separated from the electromagnetic element through magnetic attraction at this moment, so that the car speed is controlled through the magnetic attraction action, the elastic support and the like under multiple actions, when the car speed is lower than a threshold value (generally set to be 0.25 m/s), the car is held by the wheels, and the car is held tightly, and the safety loss is reduced when the car is held tightly by the elevator.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. A special permanent magnet synchronous motor car sliding speed control device for an elevator is characterized in that: it comprises the following steps:
the guide rail frames (1) are vertically and symmetrically arranged in the well;
the elevator car comprises a car main body (2) vertically arranged on one side of a guide rail frame (1), wherein a pulley block (21) is fixed on one side of the car main body (2) through a bracket piece, and the pulley block (21) is connected to the guide rail frame (1) in a sliding manner;
the permanent magnet synchronous traction machine (11) is horizontally fixed above the guide rail frame (1) through a mounting seat, and a traction rope is arranged on the permanent magnet synchronous traction machine (11);
the connecting frame is transversely and overhead fixed on one side of the mounting seat, one end of the connecting frame is rotatably provided with a guide wheel (12), and the traction rope bypasses the guide wheel (12) and is connected with the car main body (2);
the lower support frame assembly (4) is arranged below the car main body (2), and one end of the lower support frame assembly (4) is arranged on the guide rail frame (1) in a sliding manner;
the speed control protection assemblies (5) are vertically arranged, the speed control protection assemblies (5) are transversely fixed on the guide rail frame (1), and the speed control protection assemblies (5) can be connected with one end of the lower support frame assembly (4) through magnetic attraction, so that when a car body slides, the speed control protection assemblies (5) can effectively control the sliding speed of the car body; and
the enclasping wheel set (3) is arranged on the connecting frame, and the enclasping wheel set (3) can lock the main body of the traction rope after the sliding speed of the car main body (2) is lower than the warning threshold value;
the speed control protection assembly (5) comprises:
an insert seat (52);
the sealed air chambers (51) are arranged in left and right groups, and each group of sealed air chambers (51) is provided with a plurality of sealed air chambers in a arrayed mode;
a plunger rod slidably disposed within the seal cartridge (51);
a lower connecting disc (53) fixed at the lower end of each plunger rod;
the outer connecting seat (55) is vertically arranged on the lower connecting disc (53) in a sliding manner through the limiting column (54), and an outer spring is vertically arranged between the outer connecting seat (55) and the lower connecting disc (53);
the electromagnetic piece (56) can be arranged in the outer connecting seat (55) in a relatively transverse sliding manner, and a limiting spring is further connected between the electromagnetic piece and the outer connecting seat; and
the outer guide wheels are symmetrically arranged above and below the outer connecting seat (55) in a rotating mode;
the speed control protection assembly (5) further comprises:
the discharging cavity is transversely and correspondingly arranged on each sealing air bin (51) positioned at the left side;
the inner driving disc (57) is rotatably arranged in the discharging cavity, an air pressure plug is slidably arranged in the discharging cavity, and one end of the air pressure plug is connected with the inner driving disc (57) through a supporting rod;
the connecting pipe is transversely connected between the left and right sealing gas bins (51);
the damping springs (58) are vertically and symmetrically arranged in each sealing gas bin (51), an abutting ring (59) is arranged in the sealing gas bin (51) in a sliding mode, the abutting ring (59) is connected with the damping springs (58), and an air hole is formed in one side of the lower end face of the sealing gas bin (51);
the upper row of cavities are correspondingly arranged in the middle of the upper end face of each sealing gas bin (51), and the cross section of each upper row of cavities is of a circular structure;
the upper beam frame (510) is transversely arranged above the sealed air bin (51), and a plurality of telescopic guide rods (511) are vertically connected between the upper beam frame (510) and the sealed air bin (51); and
the blocking ball body (512) is vertically fixed on the upper beam frame (510), and the blocking ball body (512) can seal and block the upper cavity.
2. The elevator dedicated permanent magnet synchronous motor sliding speed control device according to claim 1, wherein: the special permanent magnet synchronous motor car sliding speed control device for the elevator further comprises:
the outer fixing pieces (15) are symmetrically arranged at the upper end and the lower end of the guide rail frame (1) up and down;
a connecting rope connected between the outer fixing pieces (15);
the speed measuring wheel (13) is arranged on one side of the upper end face of the car main body (2) in a relatively rotatable manner through the outer bracket;
fastening wheel (14) set up on the outer support, connect the rope can walk around speed measuring wheel (13) with fastening wheel (14), just fastening wheel (14) can carry out effective adjustment to the degree of tightness of connecting the rope.
3. The elevator dedicated permanent magnet synchronous motor sliding speed control device according to claim 1, wherein: the lower bracket assembly (4) comprises:
a fixed base (41);
the plurality of bearing frame plates (42) are arranged in a stacked manner, the bearing frame plates (42) are fixed with the fixed base (41), and the cross section of each bearing frame plate (42) is constructed into an arc-shaped structure;
the side brackets (43) are obliquely connected to the upper end surface of the bearing frame plate (42) in a bilateral symmetry manner, and the other ends of the side brackets (43) are connected with the car main body (2);
the plurality of inner springs (44) are transversely arranged, and each inner spring (44) is respectively connected between the bearing frame plate (42) and the car body (2);
the supporting springs are symmetrically connected between the fixed base (41) and the bearing frame plate (42) left and right;
the load-carrying column (45) is obliquely connected below the fixed base (41), one end of the load-carrying column (45) is provided with an outer guide seat (46), and the outer guide seat (46) is arranged on the guide rail frame (1) in a limiting sliding manner; and
and the metal plate frame (47) is fixed on one side of the outer guide seat (46) and is connected with each speed control protection assembly (5) under the action of magnetic attraction.
4. The elevator-dedicated permanent magnet synchronous motor rolling speed control device according to claim 3, wherein: an electromagnetic seat is further arranged on one side of the metal plate frame (47).
5. The elevator dedicated permanent magnet synchronous motor sliding speed control device according to claim 1, wherein: the occlusion spheres (512) are capable of internally blocking flow in the upper chamber to adjust the airflow rate.
6. The elevator dedicated permanent magnet synchronous motor sliding speed control device according to claim 5, wherein: each electromagnetic part (56) can provide an increasing magnetic attraction effect from top to bottom when the car body (2) slides, and meanwhile, the blocking sphere (512) can provide an increasing gas flow blocking effect for the upper cavity from top to bottom.
7. The elevator dedicated permanent magnet synchronous motor sliding speed control device according to claim 1, wherein: the enclasping wheel set (3) comprises a main wheel body (31) and an auxiliary wheel (32), wherein the auxiliary wheel (32) is rotatably overhead on the main wheel body (31) through a support rod frame, and the deflection angle range of the support rod frame is 15-78 degrees.
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| CN202210629955.8A CN114920108B (en) | 2022-06-06 | 2022-06-06 | Permanent magnet synchronous motor car sliding speed control device special for elevator |
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| CN202210629955.8A CN114920108B (en) | 2022-06-06 | 2022-06-06 | Permanent magnet synchronous motor car sliding speed control device special for elevator |
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| WO2013175546A1 (en) * | 2012-05-21 | 2013-11-28 | 株式会社日立製作所 | Elevator device |
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| CN114920108A (en) | 2022-08-19 |
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Address after: No. 351, Zhongshan North Road, Gongshu District, Hangzhou City, Zhejiang Province 310006 Patentee after: Hangzhou Special Equipment Inspection and Research Institute (Hangzhou Special Equipment Emergency Response Center) Country or region after: China Address before: No. 351, Zhongshan North Road, Gongshu District, Hangzhou City, Zhejiang Province 310006 Patentee before: Hangzhou special equipment testing and Research Institute (Hangzhou special equipment emergency response center) Country or region before: China |