Traction type anti-falling elevator for small space and anti-falling method of traction type anti-falling elevator

Abstract

The invention discloses a traction type anti-falling elevator for a small space and an anti-falling method thereof.The traction type anti-falling elevator comprises a derrick and a lift car arranged in the derrick and further comprises a steel belt driving mechanism, the steel belt driving mechanism comprises a driving rod, a driving wheel is arranged on the driving rod, and a steel belt assembly is wound around the driving wheel; a first gearbox and a main motor driving the first gearbox to rotate are arranged at one end of the driving rod, a second gearbox is arranged at the other end of the driving rod, a generator is connected to the end, away from the driving rod, of the second gearbox, and a generator protector is arranged between the output positive electrode and the output negative electrode of the generator. The second gearbox and the generator are mounted at the other end of the driving rod, so that when the lift car falls and the driving rod rotates highly, the driving rod rotating at a high speed can drive the generator to generate electricity, the generator after electricity generation can give reactive force to the second gearbox, and the second gearbox gives the reactive force to the driving rod; the driving rod drives the car to descend slowly.

Description

Technical Field

[0001] The invention relates to the field of small space elevators, and in particular to a traction-type anti-falling elevator for a small space and an anti-falling method thereof. Background Art

[0002] In small space environments, elevators are being used more and more widely. Current small elevators include structures such as a motor frame, a car, a motor, a drive wheel, a steel belt, and a counterweight. For example, Chinese patent 201420108387.8 discloses a home elevator, including a hoistway, a drum-type main engine, a main engine seat beam, a steel wire rope, a car, a car guide shoe, a guide rail, etc. However, current elevators are not equipped with anti-fall devices. Once the car falls, it is likely to cause a serious safety accident. Summary of the invention

[0003] The technical problem solved by the present invention is to provide a traction anti-falling elevator for a small space, which has an anti-falling function, thereby greatly improving the safety performance of the car.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a traction anti-fall elevator for a small space, comprising a shaft frame and a car arranged in the shaft frame, and also comprising a steel belt assembly for driving the car to move up and down and a steel belt driving mechanism for driving the steel belt assembly to move;

[0005] The steel belt driving mechanism includes a driving rod, a driving wheel is arranged on the driving rod, and the steel belt assembly is wound around the driving wheel. A first gearbox and a main motor for driving the first gearbox to rotate are arranged at one end of the driving rod, and a second gearbox is arranged at the other end of the driving rod. The second gearbox is connected to a generator at one end away from the driving rod, and a generator protector is arranged between the output positive pole and the output negative pole of the generator.

[0006] Furthermore, the steel belt assembly includes a left steel belt connected to the left end side of the car and a right steel belt connected to the right end side of the car, the derrick includes a left side wall of the derrick and a right side wall of the derrick, and a first guide wheel and a second guide wheel are arranged in parallel at the lower parts of the left side wall and the right side wall of the derrick, a first anti-falling assembly is arranged on the top of the left end side of the car, and a second anti-falling assembly is arranged on the top of the right end side of the car, and a toothed structure cooperating with the first anti-falling assembly and the second anti-falling assembly is arranged on the left side wall and the right side wall of the derrick, one end of the left steel belt is connected to the first anti-falling assembly, and the other end of the left steel belt bypasses the first guide wheel and is connected to the bottom of the left end side of the car, one end of the right steel belt is connected to the second anti-falling assembly, and the other end of the right steel belt bypasses the second guide wheel and is connected to the bottom of the right end side of the car.

[0007] Furthermore, the steel belt assembly includes a left steel belt connected to the left end of the car and a right steel belt connected to the right end of the car, the derrick includes a left side wall of the derrick and a right side wall of the derrick, a first anti-falling assembly is arranged on the top of the left end of the car, a second anti-falling assembly is arranged on the top of the right end of the car, a toothed structure cooperating with the first anti-falling assembly and the second anti-falling assembly is arranged on the left side wall and the right side wall of the derrick, one end of the left steel belt is connected to the first anti-falling assembly, and the other end of the left steel belt is connected to the driving wheel, one end of the right steel belt is connected to the second anti-falling assembly, and the other end of the right steel belt is connected to the driving wheel.

[0008] Furthermore, the first anti-falling assembly and the second anti-falling assembly both include a mounting plate vertically connected to the car, and an anti-falling rod, the middle portion of the anti-falling rod is hinged to the mounting plate, the upper end of the anti-falling rod is connected to the left steel belt or the right steel belt, and a spring is provided between the lower portion of the anti-falling rod and the car;

[0009] When the left steel belt or the right steel belt is not broken, the anti-fall rod is in a vertical state;

[0010] When the left steel belt or the right steel belt breaks, the anti-fall rod rotates under the action of the spring, and the lower end of the anti-fall rod extends into the toothed structure.

[0011] Furthermore, a tilt detection mechanism for detecting whether the anti-fall rod is tilted is arranged on the side wall of the car.

[0012] Furthermore, a tensioning mechanism for tensioning the left steel belt and the right steel belt is also provided on the derrick, and a power generation detection mechanism for detecting current is provided between the output positive pole and the output negative pole of the generator.

[0013] Furthermore, a backup motor for driving the driving rod to reverse is also arranged on one side of the driving rod, and an overload protection device is arranged at the connection between the left steel belt or the right steel belt and the car.

[0014] Furthermore, a top micro switch is arranged at the top of the car, and a bottom micro switch is arranged at the bottom of the car.

[0015] The present invention also discloses a fall prevention method, including the above-mentioned traction fall prevention elevator for small space, wherein the method is as follows:

[0016] The main motor drives the driving rod to rotate, the driving rod drives the driving wheel to rotate, the driving wheel drives the steel belt to move, and the steel belt drives the car to move up and down. When the elevator falls, the speed of the driving rod increases, thereby driving the speed of the second gearbox to increase. The high speed of the second gearbox drives the generator to generate electricity. After generating electricity, the generator gives a reaction force to the second gearbox, driving the speed of the second gearbox to slow down. The reaction force of the second gearbox is to the driving rod, driving the speed of the driving rod to slow down, thereby slowing down the fall of the car.

[0017] Furthermore, when the left steel belt or the right steel belt breaks, the anti-fall rod rotates under the action of the spring, and the lower end of the anti-fall rod extends into the toothed structure to prevent the car from falling.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention installs a second gearbox and a generator at the other end of the driving rod, so that when the car falls and the driving rod rotates at a high speed, the driving rod rotating at a high speed will drive the generator to generate electricity. After the electricity is generated, the generator will give a reaction force to the second gearbox, so that the second gearbox gives a reaction force to the driving rod, and the driving rod drives the car to slowly descend.

[0020] 2. Through the arrangement of the first anti-falling assembly and the second anti-falling assembly, when the left steel belt or the right steel belt breaks, the anti-falling rod will be stuck in the toothed structure, thereby preventing the car from continuing to fall.

[0021] 3. By setting up the backup motor, when the car falls, the backup motor starts and rotates in the opposite direction, thereby giving a reaction force to the drive rod, which drives the car to slowly descend. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a traction-type anti-fall elevator for a small space according to an embodiment of the present application.

[0023] Figure 2 for Figure 1 A schematic diagram of the enlarged structure in the middle.

[0024] Figure 3 It is a schematic diagram of the state of the first fall prevention component when the left steel belt is broken.

[0025] Figure 4 It is a schematic diagram of another driving mechanism of a traction-type anti-fall elevator for a small space according to an embodiment of the present application.

[0026] Marked in the figure are: derrick 1, car 2, driving rod 3, driving wheel 4, first gearbox 5, main motor 6, second gearbox 7, generator 8, generator protector 9, left steel belt 10, right steel belt 11, first guide wheel 12, second guide wheel 13, first anti-falling assembly 14, mounting plate 141, anti-falling rod 142, spring 144, tilt detection mechanism 145, second anti-falling assembly 15, tooth structure 16, tensioning mechanism 17, standby motor 18, top micro switch 19, bottom micro switch 20, power generation detection mechanism 21, overload protection device 22. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] like Figure 1 As shown, the embodiment of the present application discloses a traction anti-fall elevator for a small space, comprising a derrick 1 and a car 2 arranged in the derrick 1, and also comprising a steel belt assembly for driving the car 2 to perform lifting motion and a steel belt driving mechanism for driving the steel belt assembly to move;

[0029] The steel belt driving mechanism includes a driving rod 3, a driving wheel 4 is provided on the driving rod 3, and the steel belt assembly is wound around the driving wheel 4. A first gearbox 5 and a main motor 6 for driving the first gearbox 5 to rotate are provided at one end of the driving rod 3, and a second gearbox 7 is provided at the other end of the driving rod 3. The second gearbox 7 is connected to a generator 8 at one end away from the driving rod 3, and a generator protector 9 is provided between the output positive pole and the output negative pole of the generator 8.

[0030] Specifically, the motor protector mentioned above can be a resistor connected in series between the output positive pole and the output negative pole of the generator 8, the first gearbox 5 mentioned above is a gearbox with a self-locking function, and the second gearbox 7 mentioned above is a gearbox without a self-locking function. The power of the generator 8 at a low speed is not enough to give a reaction force to the second gearbox 7, and the power generated at a high speed will give a reaction force to the second gearbox 7 to the drive rod 3.

[0031] During specific operation, the main motor 6 drives the driving rod 3 to rotate, the driving rod 3 drives the driving wheel 4 to rotate, the driving wheel 4 drives the steel belt to move, and the steel belt drives the car 2 to move up and down. When the elevator falls, the speed of the driving rod 3 increases, thereby driving the speed of the second gearbox 7 to increase. The high speed of the second gearbox 7 drives the generator 8 to generate electricity. After generating electricity, the generator 8 gives a reaction force to the second gearbox 7, driving the speed of the second gearbox 7 to slow down. The reaction force of the second gearbox 7 is applied to the driving rod 3, driving the speed of the driving rod 3 to slow down, so that the fall of the car 2 is slowed down.

[0032] In this structure, a second gearbox 7 and a generator 8 are installed at the other end of the driving rod 3, so that when the car 2 falls, the generator 8 can give a reaction force to the driving rod 3, so that the driving rod 3 slows down the rotation, thereby preventing the car 2 from falling urgently and causing a safety accident. At the same time, this structure forms a driving mechanism through the driving rod 3 and the driving steel belt energy structure, thereby reducing the occupied space of the car 2, so that the elevator can be used in a small space environment.

[0033] In this embodiment, the steel belt assembly includes a left steel belt 10 connected to the left end side of the car 2 and a right steel belt 11 connected to the right end side of the car 2. The derrick 1 includes a left side wall of the derrick and a right side wall of the derrick. The lower parts of the left side wall and the right side wall of the derrick are provided with a first guide wheel 12 and a second guide wheel 13 in parallel. A first anti-falling assembly 14 is provided at the top of the left end side of the car 2, and a second anti-falling assembly 15 is provided at the top of the right end side of the car 2. A toothed structure 16 cooperating with the first anti-falling assembly 14 and the second anti-falling assembly 15 is provided on the left side wall and the right side wall of the derrick. One end of the left steel belt 10 is connected to the first anti-falling assembly 14, and the other end of the left steel belt 10 bypasses the first guide wheel 12 and is connected to the bottom of the left end side of the car 2. One end of the right steel belt 11 is connected to the second anti-falling assembly 15, and the other end of the right steel belt 11 bypasses the second guide wheel 13 and is connected to the bottom of the right end side of the car 2.

[0034] Specifically, the steel belt assembly can be implemented in the following embodiments in addition to the above embodiments: Figure 4 As shown, specifically:

[0035] The steel belt assembly includes a left steel belt 10 connected to the left end of the car 2 and a right steel belt 11 connected to the right end of the car 2. The derrick 1 includes a left side wall and a right side wall of the derrick. A first anti-falling assembly 14 is provided on the top of the left end of the car 2, and a second anti-falling assembly 15 is provided on the top of the right end of the car 2. A toothed structure 16 cooperating with the first anti-falling assembly 14 and the second anti-falling assembly 15 is provided on the left side wall and the right side wall of the derrick. One end of the left steel belt 10 is connected to the first anti-falling assembly 14, and the other end of the left steel belt 10 is connected to the driving wheel 4. One end of the right steel belt 11 is connected to the second anti-falling assembly 15, and the other end of the right steel belt 11 is connected to the driving wheel 4.

[0036] Specifically, Figure 2 and Figure 3 As shown, the first anti-falling assembly 14 and the second anti-falling assembly 15 both include a mounting plate 141 vertically connected to the car 2, and also include an anti-falling rod 142, the middle part of the anti-falling rod 142 is hinged to the mounting plate 141, the upper end of the anti-falling rod 142 is connected to the left steel belt 10 or the right steel belt 11, and a spring 144 is provided between the lower part of the anti-falling rod 142 and the car;

[0037] During operation, when the left steel belt 10 or the right steel belt 11 is not broken, the anti-fall rod 142 is in a vertical state; when the left steel belt 10 or the right steel belt 11 is broken, the lower end of the anti-fall rod 142 rotates toward the side wall of the derrick 1 under the action of the spring 144, so that the lower end of the anti-fall rod 142 extends into the toothed structure 16. The toothed structure 16 can block the anti-fall rod 142, and then block the car 2 from falling.

[0038] In this embodiment, a tilt detection mechanism 145 for detecting whether the anti-fall rod 142 is tilted is provided on the side wall of the car 2.

[0039] Specifically, the above-mentioned tilt detection mechanism 145 can be a contact sensor, a distance sensor, etc., which can detect whether the anti-fall rod 142 is tilted by detecting the distance between the upper end or the lower end of the anti-fall rod 142 and the contact sensor or the distance sensor. When the anti-fall rod 142 is detected to be tilted, it means that the left steel belt 10 or the right steel belt 11 is broken at this time, and the main motor 6 stops rotating, thereby preventing a more serious falling accident.

[0040] In this embodiment, the derrick 1 is also provided with a tensioning mechanism 17 for tensioning the left steel belt 10 and the right steel belt 11, and a power generation detection mechanism 21 for detecting current is provided between the output positive pole and the output negative pole of the generator 8, and the power generation detection mechanism 21 is connected in parallel with the generator protector 9.

[0041] It should be explained that the above-mentioned tensioning mechanism 17 can be implemented using the existing structure. Through the setting of the tensioning mechanism 17, the left steel belt 10 and the right steel belt 11 can be kept in a tensioned state at all times, thereby ensuring the stable lifting and lowering of the car 2. At the same time, the setting of the above-mentioned power generation detection mechanism 21 can be used to detect whether the generator is in a normal working state.

[0042] In this embodiment, a backup motor 18 for driving the driving rod 3 to reverse is further provided on one side of the driving rod 3, and an overload protection device 22 is provided at the connection between the left steel belt or the right steel belt and the car.

[0043] Specifically, during normal driving, the backup motor 18 does not work and is only driven by the main motor 6. When the car 2 falls and the drive rod 3 rotates rapidly, the backup motor 18 starts and rotates in the opposite direction, thereby applying a reaction force to the drive rod 3, and the drive rod 3 drives the car 2 to slowly descend.

[0044] The provision of the backup motor 18 can prevent the driving rod 3 from rotating rapidly in an emergency, thereby achieving the purpose of preventing the vehicle from falling.

[0045] Specifically, the overload protection device 22 can detect the gravity of the car and prevent the steel belt assembly from breaking due to excessive weight in the car.

[0046] In this embodiment, a top micro switch 19 is provided at the top of the car 2 , and a bottom micro switch 20 is provided at the bottom of the car 2 .

[0047] It should be explained that in some application scenarios, for example: when the elevator rises to the second floor, people can walk under the elevator; when the elevator is on the first floor, the empty space on the second floor can be covered with a cover for people to walk around.

[0048] Therefore, when the elevator descends, the bottom microswitch 20 contacts the blocking signal, and the car 2 stops moving immediately. When the elevator ascends, the top microswitch 19 contacts the blocking signal, and the car 2 stops moving immediately. The setting of the top microswitch 19 and the bottom microswitch 20 can ensure the safe use of the elevator to the greatest extent.

[0049] The present invention also discloses a fall prevention method, including the above-mentioned traction fall prevention elevator for small space, and the specific method is:

[0050] The main motor 6 drives the driving rod 3 to rotate, the driving rod 3 drives the driving wheel 4 to rotate, the driving wheel 4 drives the steel belt to move, and the steel belt drives the car 2 to move up and down. When the elevator falls, the speed of the driving rod 3 increases, thereby driving the speed of the second gearbox 7 to increase. The high speed of the second gearbox 7 drives the generator 8 to generate electricity. After generating electricity, the generator 8 gives a reaction force to the second gearbox 7, driving the speed of the second gearbox 7 to slow down. The reaction force of the second gearbox 7 is applied to the driving rod 3, driving the speed of the driving rod 3 to slow down, so that the fall of the car 2 is slowed down.

[0051] When the left steel belt 10 or the right steel belt 11 breaks, the anti-falling rod 142 rotates under the action of the spring 144, and the lower end of the anti-falling rod 142 extends into the toothed structure 16 to prevent the car 2 from falling.

[0052] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A traction anti-fall elevator for small space, Features: It comprises a derrick (1) and a car (2) arranged in the derrick (1), and also comprises a steel belt assembly for driving the car (2) to move up and down, and a steel belt driving mechanism for driving the steel belt assembly to move; The steel belt driving mechanism comprises a driving rod (3), a driving wheel (4) is arranged on the driving rod (3), the steel belt assembly is wound around the driving wheel (4), a first gearbox (5) and a main motor (6) for driving the first gearbox (5) to rotate are arranged at one end of the driving rod (3), a second gearbox (7) is arranged at the other end of the driving rod (3), a generator (8) is connected to the end of the second gearbox (7) away from the driving rod (3), and a generator protector (9) is arranged between the output positive pole and the output negative pole of the generator (8).

2. The traction anti-fall elevator for small space according to claim 1, Features: The steel belt assembly comprises a left steel belt (10) connected to the left end side of the car (2) and a right steel belt (11) connected to the right end side of the car (2); the derrick (1) comprises a left derrick wall and a right derrick wall; a first guide wheel (12) and a second guide wheel (13) are arranged in parallel at the lower parts of the left derrick wall and the right derrick wall; a first anti-falling assembly (14) is arranged at the top of the left end side of the car (2); a second anti-falling assembly (15) is arranged at the top of the right end side of the car (2); the left derrick wall and A toothed structure (16) cooperating with the first anti-falling assembly (14) and the second anti-falling assembly (15) is arranged on the right side wall of the derrick; one end of the left steel belt (10) is connected to the first anti-falling assembly (14); the other end of the left steel belt (10) bypasses the first guide wheel (12) and is connected to the bottom of the left end of the car (2); one end of the right steel belt (11) is connected to the second anti-falling assembly (15); the other end of the right steel belt (11) bypasses the second guide wheel (13) and is connected to the bottom of the right end of the car (2).

3. The traction anti-fall elevator for small space according to claim 1, Features: The steel belt assembly comprises a left steel belt (10) connected to the left end side of the car (2) and a right steel belt (11) connected to the right end side of the car (2); the derrick (1) comprises a left derrick wall and a right derrick wall; a first anti-falling assembly (14) is arranged on the top of the left end side of the car (2); a second anti-falling assembly (15) is arranged on the top of the right end side of the car (2); a toothed structure (16) cooperating with the first anti-falling assembly (14) and the second anti-falling assembly (15) is arranged on the left derrick wall and the right derrick wall; one end of the left steel belt (10) is connected to the first anti-falling assembly (14), and the other end of the left steel belt (10) is connected to the driving wheel (4); one end of the right steel belt (11) is connected to the second anti-falling assembly (15), and the other end of the right steel belt (11) is connected to the driving wheel (4).

4. The traction anti-fall elevator for small space according to claim 2 or 3, Features: The first anti-fall assembly (14) and the second anti-fall assembly (15) both comprise a mounting plate (141) vertically connected to the car (2), and also comprise an anti-fall rod (142), the middle portion of the anti-fall rod (142) being hinged to the mounting plate (141), the upper end of the anti-fall rod (142) being connected to the left steel belt (10) or the right steel belt (11), and a spring (144) being arranged between the lower portion of the anti-fall rod (142) and the car; When the left steel belt (10) or the right steel belt (11) is not broken, the anti-fall rod (142) is in a vertical state; When the left steel belt (10) or the right steel belt (11) breaks, the anti-falling rod (142) rotates under the action of the spring (144), and the lower end of the anti-falling rod (142) extends into the toothed structure (16).

5. The traction-type anti-fall elevator for small space as claimed in claim 4, Features: The side wall of the car (2) is provided with an inclination detection mechanism (145) for detecting whether the anti-fall rod (142) is inclined.

6. The traction-type anti-fall elevator for small space as claimed in claim 2, Features: The derrick (1) is also provided with a tensioning mechanism (17) for tensioning the left steel belt (10) and the right steel belt (11), and a power generation detection mechanism (21) for detecting current is provided between the output positive pole and the output negative pole of the generator (8).

7. The traction anti-fall elevator for small space according to claim 2 or 3, Features: A backup motor (18) for driving the driving rod (3) to reverse is also provided on one side of the driving rod (3); An overload protection device (22) is provided at the connection between the left steel belt or the right steel belt and the car.

8. The traction-type anti-fall elevator for small space as claimed in claim 1, Features: A top micro switch (19) is arranged at the top of the car (2), and a bottom micro switch (20) is arranged at the bottom of the car (2).

9. A method for preventing falling, comprising the traction-type anti-falling elevator for small space according to any one of claims 1 to 8, Features: The main motor (6) drives the driving rod (3) to rotate, the driving rod (3) drives the driving wheel (4) to rotate, the driving wheel (4) drives the steel belt to move, and the steel belt drives the car (2) to move up and down. When the elevator falls, the speed of the driving rod (3) increases, thereby driving the speed of the second gearbox (7) to increase. The high speed of the second gearbox (7) drives the generator (8) to generate electricity. After the generator (8) generates electricity, it gives a reaction force to the second gearbox (7), driving the speed of the second gearbox (7) to slow down. The reaction force of the second gearbox (7) is applied to the driving rod (3), driving the speed of the driving rod (3) to slow down, so that the falling of the car (2) is slowed down.

10. The fall prevention method according to claim 9, Features: When the left steel belt (10) or the right steel belt (11) breaks, the anti-falling rod (142) rotates under the action of the spring (144), and the lower end of the anti-falling rod (142) extends into the toothed structure (16) to prevent the car (2) from falling.

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