CN116812706A - Elevator hydraulic deceleration method - Google Patents
Elevator hydraulic deceleration method Download PDFInfo
- Publication number
- CN116812706A CN116812706A CN202310688816.7A CN202310688816A CN116812706A CN 116812706 A CN116812706 A CN 116812706A CN 202310688816 A CN202310688816 A CN 202310688816A CN 116812706 A CN116812706 A CN 116812706A
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- Prior art keywords
- elevator
- assembly
- car body
- rubber skirt
- buffer
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 229920001971 elastomer Polymers 0.000 claims abstract description 120
- 230000005484 gravity Effects 0.000 claims abstract description 8
- 239000000872 buffer Substances 0.000 claims description 112
- 230000001133 acceleration Effects 0.000 claims description 36
- 239000003638 chemical reducing agent Substances 0.000 claims description 24
- 230000003014 reinforcing effect Effects 0.000 claims description 20
- 230000035939 shock Effects 0.000 claims description 14
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 229920002635 polyurethane Polymers 0.000 claims description 10
- 239000004814 polyurethane Substances 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 230000003139 buffering effect Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 239000006173 Good's buffer Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012544 monitoring process 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
- 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
-
- 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
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/284—Buffer-stops for cars, cages, or skips mounted on cars or counterweights
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- 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)
- Types And Forms Of Lifts (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention relates to the technical field of elevators, in particular to a hydraulic speed reducing method of an elevator, when a car body stalls, the hydraulic speed reducing device of the elevator can quickly sense that the car body is in a stall state and immediately send signals to a microcontroller, the microcontroller drives a roller to rotate by controlling oil pumps on four groups of miniature direct current hydraulic push rods so as to drive the miniature direct current hydraulic push rods to rotate, a rubber skirt edge rotates to 90 degrees anticlockwise along with the roller, and four groups of friction forces opposite to the gravity direction are generated between the rubber skirt edge and an electric shaft wall, so that the speed reduction of the stall elevator is achieved. The invention has the beneficial effects that: the speed reduction of the stall elevator can be effectively realized, so that personnel and property in the elevator are protected from being damaged.
Description
The present application is a divisional application taking the patent of the invention named as an elevator hydraulic speed reducer with the application date of 2018-03-29 and the application number of 201810270814.5 as a parent application.
Technical Field
The invention relates to the technical field of elevators, in particular to a hydraulic speed reduction method for an elevator.
Background
With the rapid development of the economy and society, the population density of cities is increased, and high-rise buildings are also increased sharply, so that the safety of the high-rise building elevator is also increasingly concerned by all parties. In recent years, casualties caused by uncontrolled falling of elevators are frequent, and cause small shadows to the public's mind.
In the current elevator installed in a high-rise building, once stall falling or overspeed roof-rushing occurs, a speed reducing device is not arranged in the falling or roof-rushing process, and under the action of gravity acceleration or excess traction force, the car can generate great kinetic energy at the moment of sitting or roof-rushing, and the kinetic energy is difficult to completely buffer and release through a buffer device at the pit bottom, so that the elevator is an important cause of serious personnel and property loss finally.
The existing hydraulic speed reducer for the elevator cannot generate stable force opposite to gravity and traction force in the process of falling or jacking of the elevator when the elevator stalls, so that the purpose of decelerating the stalled elevator cannot be achieved.
Disclosure of Invention
In order to overcome the defects in the prior art, the technical problems to be solved by the invention are as follows: the hydraulic elevator deceleration method is simple in structural design and capable of effectively decelerating the stall elevator.
In order to solve the technical problems, the invention adopts the following technical scheme: the hydraulic elevator speed reducer comprises a car body, a miniature direct-current hydraulic push rod assembly, a rubber skirt assembly, an acceleration sensor and a microcontroller; the bottom of the outer side of the car body is provided with a cross groove, the notches in the four directions of the cross groove are respectively provided with the miniature direct current hydraulic push rod assemblies, and each miniature direct current hydraulic push rod assembly is connected with a rubber skirt assembly;
the miniature direct current hydraulic push rod assembly consists of a first mounting support, a first bolt and a miniature direct current hydraulic push rod, the miniature direct current hydraulic push rod assembly is connected with the bottom of the outer side of the car body through the first mounting support, and one end of the miniature direct current hydraulic push rod is connected with the first mounting support through the first bolt;
the rubber skirt edge assembly consists of an assembly mounting groove, a second mounting support, a roller and a rubber skirt edge, the other end of the miniature direct-current hydraulic push rod is connected with the rubber skirt edge assembly through the roller, the rubber skirt edge assembly is connected with the periphery of the bottom of the outer side of the car body through the assembly mounting groove, the cross section of the assembly mounting groove in the vertical direction is L-shaped, the assembly mounting groove comprises a horizontal part and a vertical part, the two ends of the bottom of the horizontal part are respectively provided with the second mounting support, the two ends of the roller are respectively provided with a connecting shaft, the roller is connected with the second mounting support through the connecting shaft, a first connecting groove is formed in the side face of the roller, and one end of the rubber skirt edge is connected with the roller through the first connecting groove;
the acceleration sensor and the microcontroller are respectively arranged at the bottom of the outer side of the car body;
the microcontroller is arranged on a machine room of an elevator system which is arranged outside, and the microcontroller is connected with the acceleration sensor through wireless signals.
Further, the shape of the rubber skirt is arc-shaped, and the length of the rubber skirt is equal to that of the assembling and installing groove.
Further, the rubber skirt edge component further comprises a reinforcing rib and a second bolt, the other end of the miniature direct current hydraulic push rod is connected with the rubber skirt edge through the reinforcing rib, a second connecting groove matched with two ends of the reinforcing rib is formed in the surface, close to the arc center, of the rubber skirt edge, and two ends of the reinforcing rib are inserted into the second connecting groove and are connected with the rubber skirt edge through the second bolt.
Further, still include buffer unit, buffer unit sets up cross groove with in the horizontal part of assembly mounting groove encloses into four buffer areas, buffer unit includes buffer layer, buffer, lower buffer layer and reaction spring, buffer unit pass through last buffer layer with the outside bottom of car body is connected, the upper end of buffer is being connected and is being gone up the buffer layer, the lower extreme of buffer is being connected down the buffer layer.
Further, the upper buffer layer and the lower buffer layer are respectively composed of a first rubber layer, an air bag layer and a second rubber layer which are sequentially arranged from top to bottom.
Further, a limit column is further arranged between the buffers, a shock pad is arranged at the free end of the limit column, and the distance between the shock pad and the lower buffer layer is equal to the compression working distance of the buffers.
Further, the lower buffer layer is positioned below the free end of the rubber skirt.
Further, the buffer is a polyurethane buffer.
Further, the acceleration sensor adopts a CT series ICP/IEPE acceleration sensor.
Further, the model adopted by the microcontroller is STM32F407ZGT6.
The invention has the beneficial effects that: when the car body stalls, the elevator hydraulic speed reducing device can rapidly sense that the car body is in a stall state and immediately send signals to the microcontroller, the microcontroller drives the miniature direct current hydraulic push rods to drive the roller to rotate by controlling the oil pumps on the miniature direct current hydraulic push rods to work, the rubber skirt edge rotates to 90 degrees along with the roller anticlockwise, and four groups of friction forces opposite to the gravity direction are generated between the rubber skirt edge and an electric shaft wall, so that the purpose of decelerating the stall elevator is achieved; the hydraulic speed reducer of the whole elevator has simple structural design, low manufacturing cost and easy daily maintenance, and can effectively realize speed reduction of the stall elevator, thereby protecting personnel and property in the elevator from damage.
Drawings
Fig. 1 is a state diagram of an elevator hydraulic reduction gear when the elevator hydraulic reduction gear is silent according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a miniature dc hydraulic ram assembly and a rubber skirt assembly of an elevator hydraulic speed reducer according to an embodiment of the present invention;
fig. 3 is a schematic view of the rubber skirt of an elevator hydraulic speed reducer according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a drum of an elevator hydraulic speed reducing apparatus according to an embodiment of the present invention;
fig. 5 is a working state diagram of the elevator hydraulic speed reducing device according to the embodiment of the invention when the rubber skirt is fully unfolded by 90 degrees;
fig. 6 is a schematic view of the bottom of a car body of an elevator hydraulic speed reducer according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a buffer assembly of an elevator hydraulic speed reducing apparatus according to an embodiment of the present invention;
fig. 8 is a flowchart of a control method of an elevator hydraulic speed reducing apparatus according to an embodiment of the present invention;
description of the reference numerals:
1. a car body; 11. a cross groove; 2. miniature direct current hydraulic push rod assembly; 21. a first mounting bracket; 22. a first bolt; 23. miniature direct-current hydraulic push rod;
3. a rubber skirt assembly; 31. assembling the mounting groove; 311. a horizontal portion; 312. a vertical portion; 32. a second mounting bracket; 33. a roller; 331. a connecting shaft; 332. a first connection groove; 34. a rubber skirt;
341. a protrusion; 342. a second connecting groove; 35. reinforcing ribs; 36. a second bolt;
4. an acceleration sensor;
5. a buffer assembly; 51. an upper buffer layer; 511. a first rubber layer; 512. an air bag layer; 513. a second rubber layer; 52. a buffer; 53. a lower buffer layer; 54. a limit column; 55. and a shock pad.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
The most critical concept of the invention is as follows: when the car body stalls, the elevator hydraulic speed reducer can rapidly sense that the car body is in a stall state and immediately send signals to the microcontroller, and the microcontroller drives the roller to rotate by controlling the oil pumps on the four groups of miniature direct current hydraulic push rods, so that the rubber skirt edge rotates to 90 degrees along with the anticlockwise rotation of the roller, and four groups of friction forces opposite to the gravity direction are generated between the rubber skirt edge and an electric shaft wall, so that the aim of decelerating the stall elevator is achieved.
Referring to fig. 1 to 4, an elevator hydraulic speed reducer comprises a car body 1, a miniature direct current hydraulic push rod assembly 2, a rubber skirt assembly 3, an acceleration sensor 4 and a microcontroller; the bottom of the outer side of the car body 1 is provided with a cross groove 11, the notches in the four directions of the cross groove 11 are respectively provided with the miniature direct current hydraulic push rod assemblies 2, and each group of miniature direct current hydraulic push rod assemblies 2 are connected with a rubber skirt assembly 3;
the miniature direct current hydraulic push rod assembly 2 consists of a first mounting support 21, a first bolt 22 and a miniature direct current hydraulic push rod 23, the miniature direct current hydraulic push rod assembly 2 is connected with the bottom of the outer side of the car body 1 through the first mounting support 21, and one end of the miniature direct current hydraulic push rod 23 is connected with the first mounting support 21 through the first bolt 22;
the rubber skirt assembly 3 is composed of an assembly mounting groove 31, a second mounting support 32, a roller 33 and a rubber skirt 34, the other end of the miniature direct current hydraulic push rod 23 is connected with the rubber skirt assembly 3 through the roller 33, the rubber skirt assembly 3 is connected with the periphery of the bottom of the outer side of the car body 1 through the assembly mounting groove 31, the cross section of the assembly mounting groove 31 in the vertical direction is L-shaped, the assembly mounting groove 31 comprises a horizontal part 311 and a vertical part 312, the two ends of the bottom of the horizontal part 311 are respectively provided with the second mounting support 32, the two ends of the roller 33 are respectively provided with a connecting shaft 331, the roller 33 is connected with the second mounting support 32 through the connecting shaft 331, a first connecting groove 332 is arranged on the side surface of the roller 33, and one end of the rubber skirt 34 is connected with the roller 33 through the first connecting groove 332;
the acceleration sensor 4 and the microcontroller are respectively arranged at the bottom of the outer side of the car body 1;
the microcontroller is arranged on a machine room of an elevator system which is arranged outside, and the microcontroller is connected with the acceleration sensor 4 through wireless signals.
As can be seen from the above description, the operation of the hydraulic elevator speed reducer comprises the following steps:
four groups of miniature direct current hydraulic push rod assemblies 2 are designed at the bottom of the car body 1, each group of miniature direct current hydraulic push rod assemblies 2 is respectively matched with a group of rubber skirt edge assemblies 3, the four groups of rubber skirt edge assemblies 3 are respectively connected to the periphery of the bottom of the car body 1 of the elevator, and an acceleration sensor 4 positioned at the bottom of the outer side of the car body 1 is normalized and continuously operated and is used for monitoring the acceleration value in the operation process of the elevator. The microcontroller, the acceleration sensor 4, the miniature direct-current hydraulic push rod assembly 2 and the rubber skirt assembly 3 together form the elevator hydraulic speed reducer.
Referring to fig. 8, a flow chart of a control method of an elevator hydraulic speed reducer is shown:
when the car body 1 drops or rises, the acceleration sensor 4 starts to continuously determine whether or not the value of the acceleration of the falling or rising of the car body 1 exceeds the threshold value X. When the acceleration value in the running process of the car body 1 is smaller than the threshold value X, the elevator speed reducer is in a silent state, and as shown in fig. 1, the elevator hydraulic speed reducer is in a silent state diagram.
When the car body 1 is in stall operation, i.e. the acceleration value of the car body 1 is greater than the threshold value X, the acceleration sensor 4 sends an operating signal to the microcontroller, the microcontroller is installed in the machine room of the elevator system, and the machine room is usually at the highest floor of the building, so the position of the microcontroller is not shown in the drawing, the microcontroller drives the oil pumps on the four groups of micro-direct-current hydraulic pushrods 23 positioned at the bottom of the car body 1 to operate, the oil pumps drive the micro-direct-current hydraulic pushrods 23 to push the roller 33 to rotate anticlockwise, and further drive the rubber skirt 34 positioned at the rubber skirt 34 to rotate anticlockwise, at this time, the rubber skirt 34 of the rubber skirt assembly 3 stretches along with the rotation of the roller 33, and it is noted that when the roller 33 rotates to 70 ℃, the rubber skirt 34 is in friction contact with the elevator shaft wall at this time, and four groups of friction forces opposite to the acceleration of the elevator are generated at the same time, and sufficient to reduce the acceleration value of the elevator, as shown in fig. 5, the operating state of the rubber skirt 34 of the hydraulic speed reducing device is completely stretched by 90 degrees.
As can be seen from the above description, the above hydraulic speed reducer for elevator has the following advantages:
when the car body 1 stalls, the elevator hydraulic speed reducer can quickly sense that the car body 1 is in a stall state and immediately send signals to the microcontroller, the microcontroller drives the miniature direct current hydraulic push rods 23 to drive the roller 33 to rotate by controlling the oil pumps on the miniature direct current hydraulic push rods 23, the rubber skirt 34 rotates to 90 degrees anticlockwise along with the roller 33, and four groups of friction forces opposite to the gravity direction are generated between the rubber skirt 34 and an electric shaft wall, so that the purpose of decelerating the stall elevator is achieved; the hydraulic speed reducer of the whole elevator has simple structural design, low manufacturing cost and easy daily maintenance, and can effectively realize speed reduction of the stall elevator, thereby protecting personnel and property in the elevator from damage.
Further, the shape of the rubber skirt 34 is arc-shaped, and the length of the rubber skirt 34 is equal to the length of the fitting groove 31.
As is apparent from the above description, by designing the shape of the rubber skirt 34 to be arc-shaped, the length of the rubber skirt 34 is designed to be equal to the length of the fitting groove 31, and when the elevator is in a stall state, the rubber skirt 34 is in frictional contact with the elevator shaft wall, and the arc-shaped rubber skirt 34 is not only strong but also has a good deceleration effect.
Further, the rubber skirt 34 assembly 3 further comprises a reinforcing rib 35 and a second bolt 36, the other end of the micro direct current hydraulic push rod 23 is connected with the rubber skirt 34 through the reinforcing rib 35, a second connecting groove 342 matched with two ends of the reinforcing rib 35 is formed in the surface, close to the arc center, of the rubber skirt 34, and two ends of the reinforcing rib 35 are inserted into the second connecting groove 342 and are connected with the rubber skirt 34 through the second bolt 36.
As is apparent from the above description, referring to fig. 2, by providing the reinforcing rib 35 and the second bolt 36, the other end of the micro dc hydraulic ram 23 is connected to the rubber skirt assembly 3 via the reinforcing rib 35, and at the same time, both ends of the reinforcing rib 35 are inserted into the second connecting groove 342 and connected to the rubber skirt 34 via the second bolt 36, the rigidity of the rubber skirt 34 can be increased and the driving force of the micro dc hydraulic ram 23 can be received.
Further, the car further comprises a buffer assembly 5, the buffer assembly 5 is arranged in four buffer areas surrounded by the cross groove 11 and the horizontal portion 311 of the assembly mounting groove 31, the buffer assembly 5 comprises an upper buffer layer 51, a buffer 52, a lower buffer layer 53 and a counter spring, the buffer assembly 5 is connected with the outer bottom of the car body 1 through the upper buffer layer 51, the upper end of the buffer 52 is connected with the upper buffer layer 51, and the lower end of the buffer 52 is connected with the lower buffer layer 53.
As can be seen from the above description, referring to fig. 6 and 7, when the elevator contacts with the ground, the buffer assembly 5 consisting of the upper buffer layer 51, the lower buffer layer 53 and the buffer 52 can provide a good buffer effect to the elevator, reduce the impact force between the elevator and the ground, and protect personnel and property in the elevator from being lost.
Further, the upper cushion layer 51 and the lower cushion layer are each composed of a first rubber layer 511, an air bag layer 512 and a second rubber layer 513 which are sequentially disposed from top to bottom.
As can be seen from the above description, referring to fig. 6 and 7, by designing each of the upper buffer layer 51 and the lower buffer layer 53 to be composed of the first rubber layer 511, the air bag layer 512 and the second rubber layer 513 sequentially disposed from top to bottom, the rubber layer and the air bag layer 512 have good buffering effect, and the buffering effect of the buffer layer is improved.
Further, a limiting post 54 is further disposed between the buffers 52, a shock pad 55 is disposed at a free end of the limiting post 54, and a distance between the shock pad 55 and the lower buffer layer 53 is equal to a compression working distance of the buffers 52.
As can be seen from the above description, referring to fig. 6 and 7, when the elevator contacts the ground, the buffer assembly 5 starts to play a role of buffering, the buffer 52 starts to compress, and when the buffer 52 cannot restrain the elevator from stopping, the limit post 54 and the shock pad 55 on the limit post 54 start to play a role of secondary buffering, further limiting the downward movement of the elevator until the elevator stops moving.
Further, the lower buffer layer 53 is positioned horizontally below the free end of the rubber skirt 34.
As is apparent from the above description, by designing the horizontal position of lower buffer layer 53 below the free end of rubber skirt 34, it is possible to prevent rubber skirt assembly 3 from being damaged by contact with the ground in advance, and the distance between lower buffer layer 53 and the free end of rubber skirt 34 should be the sum of the compression working distance of buffer 52 and the compression working distances of stopper post 54 and shock pad 55.
Further, the buffer 52 is a polyurethane buffer 52.
As is clear from the above description, by adopting the polyurethane damper 52, the polyurethane damper 52 has the characteristics of good damping effect, impact resistance, and compression resistance, and the polyurethane damper 52 is not only noiseless, sparkless, explosion-proof in the damping process, but also safe and reliable.
Further, the acceleration sensor 4 is a CT series ICP/IEPE acceleration sensor.
Further, the model adopted by the microcontroller is STM32F407ZGT6.
Referring to fig. 1-8, a first embodiment of the present invention is as follows:
the hydraulic speed reducer of the elevator comprises a car body 1, a miniature direct-current hydraulic push rod assembly 2, a rubber skirt assembly 3, an acceleration sensor 4 and a microcontroller; the bottom of the outer side of the car body 1 is provided with a cross groove 11, the notches in the four directions of the cross groove 11 are respectively provided with the miniature direct current hydraulic push rod assemblies 2, and each group of miniature direct current hydraulic push rod assemblies 2 are connected with a rubber skirt assembly 3;
the miniature direct current hydraulic push rod assembly 2 consists of a first mounting support 21, a first bolt 22 and a miniature direct current hydraulic push rod 23, the miniature direct current hydraulic push rod assembly 2 is connected with the bottom of the outer side of the car body 1 through the first mounting support 21, and one end of the miniature direct current hydraulic push rod 23 is connected with the first mounting support 21 through the first bolt 22;
the rubber skirt assembly 3 is composed of an assembly mounting groove 31, a second mounting support 32, a roller 33 and a rubber skirt 34, the other end of the miniature direct current hydraulic push rod 23 is connected with the rubber skirt assembly 3 through the roller 33, the rubber skirt assembly 3 is connected with the periphery of the bottom of the outer side of the car body 1 through the assembly mounting groove 31, the cross section of the assembly mounting groove 31 in the vertical direction is L-shaped, the assembly mounting groove 31 comprises a horizontal part 311 and a vertical part 312, the two ends of the bottom of the horizontal part 311 are respectively provided with the second mounting support 32, the two ends of the roller 33 are respectively provided with a connecting shaft 331, the roller 33 is connected with the second mounting support 32 through the connecting shaft 331, a first connecting groove 332 is arranged on the side surface of the roller 33, and one end of the rubber skirt 34 is connected with the roller 33 through the first connecting groove 332;
the acceleration sensor 4 and the microcontroller are respectively arranged at the bottom of the outer side of the car body 1;
the microcontroller is arranged on a machine room of an elevator system which is arranged outside, and the microcontroller is connected with the acceleration sensor 4 through wireless signals.
Referring to fig. 2, the rubber skirt 34 is arc-shaped, and the length of the rubber skirt 34 is equal to the length of the mounting groove 31.
The rubber skirt assembly 3 further comprises a reinforcing rib 35 and a second bolt 36, the other end of the miniature direct current hydraulic push rod 23 is connected with the rubber skirt 34 through the reinforcing rib 35, a second connecting groove 342 matched with two ends of the reinforcing rib 35 is formed in the surface, close to the arc center, of the rubber skirt 34, and two ends of the reinforcing rib 35 are inserted into the second connecting groove 342 and are connected with the rubber skirt 34 through the second bolt 36.
Referring to fig. 6 and 7, the elevator car further includes a buffer assembly 5, the buffer assembly 5 is disposed in four buffer areas surrounded by the cross groove 11 and the horizontal portion 311 of the mounting groove 31, the buffer assembly 5 includes an upper buffer layer 51, a buffer 52, a lower buffer layer 53 and a reaction spring, the buffer assembly 5 is connected to the bottom of the car body 1 through the upper buffer layer 51, the upper end of the buffer 52 is connected to the upper buffer layer 51, and the lower end of the buffer 52 is connected to the lower buffer layer 53.
The upper cushion layer 51 and the lower cushion layer are each composed of a first rubber layer 511, an air bag layer 512 and a second rubber layer 513 which are sequentially disposed from top to bottom.
A limiting column 54 is further arranged between the buffers 52, a shock pad 55 is arranged at the free end of the limiting column 54, and the distance between the shock pad 55 and the lower buffer layer 53 is equal to the compression working distance of the buffers 52.
The horizontal position of lower cushioning layer 53 is below the free end of rubber skirt 34.
The buffer 52 is a polyurethane buffer 52.
The acceleration sensor 4 is a CT series ICP/IEPE acceleration sensor.
The model adopted by the microcontroller is STM32F407ZGT6.
In summary, according to the hydraulic elevator speed reducer provided by the invention, when the car body stalls, the hydraulic elevator speed reducer can rapidly sense that the car body is in a stall state and immediately send signals to the microcontroller, the microcontroller drives the miniature direct current hydraulic push rods to drive the roller to rotate by controlling the oil pumps on the miniature direct current hydraulic push rods, the rubber skirt edge rotates to 90 degrees anticlockwise along with the roller, and four groups of friction forces opposite to the gravity direction are generated between the rubber skirt edge and the electric shaft wall, so that the purpose of decelerating the stall elevator is achieved; the hydraulic speed reducer of the whole elevator has simple structural design, low manufacturing cost and easy daily maintenance, and can effectively realize speed reduction of the stall elevator, thereby protecting personnel and property in the elevator from damage.
Through the shape design of rubber shirt rim for the arc, the length design of rubber shirt rim is equal for the length of assembly mounting groove, when the elevator is in stall state, rubber shirt rim and elevator wall of a well take place frictional contact, and curved rubber shirt rim not only intensity is good, has good deceleration.
Through setting up strengthening rib and second bolt, connect miniature direct current hydraulic push rod's the other end through strengthening rib and rubber shirt rim, and then be connected with the rubber shirt rim subassembly, insert the second spread groove with the both ends of strengthening rib simultaneously and connect through second bolt and rubber shirt rim, the rigidity of multiplicable rubber shirt rim and bear the driving force of the miniature direct current hydraulic push rod of transmission.
When the elevator contacts with the ground, the buffer assembly consisting of the upper buffer layer, the lower buffer layer and the buffer can play a good role in buffering the elevator, reduce the impact force between the elevator and the ground and protect personnel and property in the elevator from being lost.
Through all designing upper buffer layer and lower buffer layer by top-down first rubber layer, gasbag layer and the second rubber layer that sets gradually constitute, rubber layer and gasbag layer have fine cushioning effect, improve the cushioning effect of buffer layer.
When elevator and ground contact, buffer assembly begins to play the cushioning effect, and the buffer begins to compress, and when the buffer can not hold back the elevator and stop, the shock pad on spacing post and the spacing post begins to play the effect of secondary buffering, further restriction elevator down run until the elevator stops moving.
By designing the horizontal position of the lower buffer layer below the free end of the rubber skirt, the rubber skirt assembly can be prevented from being damaged by contact with the ground in advance, and the distance between the lower buffer layer and the free end of the rubber skirt is the sum of the compression working distance of the buffer and the compression working distance of the limit post and the shock pad.
Through adopting polyurethane buffer, polyurethane buffer has the characteristics that the cushioning effect is good, and shock-resistant, compressive property are good to polyurethane buffer not only has noiseless, no spark, explosion-proof nature good in the buffering process, safe and reliable moreover.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (10)
1. The elevator hydraulic speed reduction method is characterized in that an elevator hydraulic speed reduction device is adopted for speed reduction, and comprises a car body, a miniature direct-current hydraulic push rod assembly, a rubber skirt assembly, an acceleration sensor and a microcontroller; the bottom of the outer side of the car body is provided with a cross groove, the notches in the four directions of the cross groove are respectively provided with the miniature direct current hydraulic push rod assemblies, and each miniature direct current hydraulic push rod assembly is connected with a rubber skirt assembly;
the miniature direct current hydraulic push rod assembly consists of a first mounting support, a first bolt and a miniature direct current hydraulic push rod, the miniature direct current hydraulic push rod assembly is connected with the bottom of the outer side of the car body through the first mounting support, and one end of the miniature direct current hydraulic push rod is connected with the first mounting support through the first bolt;
the rubber skirt edge assembly consists of an assembly mounting groove, a second mounting support, a roller and a rubber skirt edge, the other end of the miniature direct-current hydraulic push rod is connected with the rubber skirt edge assembly through the roller, the rubber skirt edge assembly is connected with the periphery of the outer bottom of the car body through the assembly mounting groove, the cross section of the assembly mounting groove in the vertical direction is L-shaped, the assembly mounting groove comprises a horizontal part and a vertical part, the two ends of the bottom of the horizontal part are respectively provided with the second mounting support, the two ends of the roller are respectively provided with a connecting shaft, the roller is connected with the second mounting support through the connecting shafts, a first connecting groove is formed in the side face of the roller, one end of the rubber skirt edge is provided with a bulge, and the rubber skirt edge is inserted into the first connecting groove through the bulge and is connected with the roller;
the acceleration sensor and the microcontroller are respectively arranged at the bottom of the outer side of the car body;
the microcontroller is arranged on a machine room of an elevator system which is arranged outside, and the microcontroller is connected with the acceleration sensor through wireless signals;
the hydraulic elevator deceleration method comprises the following steps:
when the car body stalls, the elevator hydraulic speed reducer can rapidly sense that the car body is in a stall state and immediately send signals to the microcontroller, and the microcontroller drives the roller to rotate by controlling the oil pumps on the four groups of miniature direct current hydraulic push rods, so that the rubber skirt edge rotates to 90 degrees along with the anticlockwise rotation of the roller, and four groups of friction forces opposite to the gravity direction are generated between the rubber skirt edge and an electric shaft wall, so that the speed reduction of the stalled elevator is achieved.
2. The hydraulic elevator speed reducing method according to claim 1, wherein the "when the car body stalls, the hydraulic elevator speed reducing device can quickly sense that the car body is in a stall state and immediately send a signal to the microcontroller" specifically is:
when the car body drops or rises, the acceleration sensor starts to continuously judge whether the falling or rising acceleration value of the car body exceeds a threshold value X, and when the acceleration value of the car body in the running process is smaller than the threshold value X, the elevator speed reducer is in a silent state;
when the car body is in stall running, namely the acceleration value of the car body is larger than the threshold value X, the elevator hydraulic speed reducer can sense that the car body is in stall state and immediately send signals to the microcontroller.
3. The hydraulic elevator deceleration method according to claim 1, wherein the rubber skirt is arc-shaped, and the length of the rubber skirt is equal to the length of the fitting groove.
4. The hydraulic elevator deceleration method according to claim 1, wherein the rubber skirt assembly further comprises a reinforcing rib and a second bolt, the other end of the miniature direct current hydraulic push rod is connected with the rubber skirt through the reinforcing rib, a second connecting groove matched with two ends of the reinforcing rib is formed in the surface, close to the arc center, of the rubber skirt, and two ends of the reinforcing rib are inserted into the second connecting groove and are connected with the rubber skirt through the second bolt.
5. The hydraulic elevator deceleration method according to claim 1, further comprising a buffer assembly disposed in four buffer areas defined by the cross groove and the horizontal portion of the assembly installation groove, the buffer assembly including an upper buffer layer, a buffer, a lower buffer layer, and a reaction spring, the buffer assembly being connected to the outer bottom of the car body through the upper buffer layer, the upper end of the buffer being connected to the upper buffer layer, and the lower end of the buffer being connected to the lower buffer layer.
6. The hydraulic deceleration method according to claim 5, wherein the upper cushion layer and the lower cushion layer are each composed of a first rubber layer, an air bag layer and a second rubber layer which are sequentially provided from top to bottom.
7. The elevator hydraulic deceleration method according to claim 5, wherein a limit post is further arranged between the buffers, a shock pad is arranged at the free end of the limit post, and the distance between the shock pad and the lower buffer layer is equal to the compression working distance of the buffers.
8. The method of hydraulic elevator deceleration according to claim 5, wherein the horizontal position of the lower buffer layer is below the free end of the rubber skirt.
9. The method of hydraulic deceleration of an elevator according to claim 5, wherein the buffer is a polyurethane buffer.
10. The method of hydraulic elevator deceleration according to claim 1, characterized in that the acceleration sensor is a CT series ICP/IEPE acceleration sensor and the microcontroller is of the type STM32F407ZGT6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310688816.7A CN116812706A (en) | 2018-03-29 | 2018-03-29 | Elevator hydraulic deceleration method |
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| CN202310688816.7A CN116812706A (en) | 2018-03-29 | 2018-03-29 | Elevator hydraulic deceleration method |
| CN201810270814.5A CN108382947B (en) | 2018-03-29 | 2018-03-29 | Elevator hydraulic speed reducer |
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| CN202310688816.7A Pending CN116812706A (en) | 2018-03-29 | 2018-03-29 | Elevator hydraulic deceleration method |
| CN202310688823.7A Pending CN116812707A (en) | 2018-03-29 | 2018-03-29 | Stall elevator hydraulic reduction gear |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2146167B1 (en) * | 1998-05-13 | 2001-04-01 | Orona S Coop | SAFETY BRAKE FOR AN ELEVATOR CAB. |
| US9505587B2 (en) * | 2010-11-01 | 2016-11-29 | Mitsubishi Electric Corporation | Elevator with acceleration detection |
| CN202785160U (en) * | 2012-07-06 | 2013-03-13 | 滑黎明 | Lift car and protective device thereof and elevator equipment using lift car |
| CN203271801U (en) * | 2013-03-18 | 2013-11-06 | 中煤平朔集团有限公司 | Elevating type rescue capsule |
| EP2840055B1 (en) * | 2013-08-22 | 2019-10-02 | KONE Corporation | A support apparatus for a hoisting machine car |
| CN205739862U (en) * | 2016-04-27 | 2016-11-30 | 珠江富士电梯（中国）有限公司 | A kind of elevator safety system |
| CN205953260U (en) * | 2016-08-31 | 2017-02-15 | 泉州市克力福电气设备有限公司 | Elevator with tight quick slowdown device |
| CN206375522U (en) * | 2016-12-30 | 2017-08-04 | 陈超 | A kind of coupling device of elevator safety operation |
| CN106882676A (en) * | 2017-03-16 | 2017-06-23 | 浙江阿斯顿电梯有限公司 | A kind of used during elevator falling buffer unit |
| CN206606883U (en) * | 2017-04-04 | 2017-11-03 | 刘森 | A kind of car carries the emergency staircase of friction, positive brake apparatus |
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| CN108382947A (en) | 2018-08-10 |
| CN108382947B (en) | 2023-09-15 |
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