CN113188820B - Elevator load detection device based on lever principle - Google Patents
Elevator load detection device based on lever principle Download PDFInfo
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- CN113188820B CN113188820B CN202110435266.9A CN202110435266A CN113188820B CN 113188820 B CN113188820 B CN 113188820B CN 202110435266 A CN202110435266 A CN 202110435266A CN 113188820 B CN113188820 B CN 113188820B
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- fixedly arranged
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
Abstract
The invention discloses an elevator load detection device based on a lever principle, and particularly relates to the technical field of elevator load detection, wherein the elevator load detection device comprises a lever, wherein an adjusting mechanism and a fixing mechanism are arranged at the outer end of the lever, and the fixing mechanism is arranged at the bottom of the adjusting mechanism; adjustment mechanism is including removing the frame, it establishes in the lever outer end to remove the frame cover, it has the supporting seat to remove the frame bottom through pivot swing joint, the supporting seat is established in the lever bottom, lever front side and rear side both ends are all fixed and are equipped with the fixed plate, it is all fixed and is equipped with the movable plate to remove frame front side and rear side. The motor and the two threaded rods are used for driving the movable frame to move at the outer end of the lever, so that the position of the fulcrum can be changed, the application range of the device is expanded, the fan is used for evacuating air in the rubber sucker to fix the positions of the second hollow rod and the first hollow rod, the force application point is prevented from deviating, and the influence on the measurement result can be avoided.
Description
Technical Field
The embodiment of the invention relates to the technical field of elevator load detection, in particular to an elevator load detection device based on a lever principle.
Background
With the continuous progress of science and technology, high-rise buildings are bamboo shoots appearing in the field of vision of people after entering the rain, the problem of urban population concentration is effectively solved, and a transportation tool capable of vertically transporting people and goods is also produced as an elevator in order to facilitate people to enter and exit the high-rise buildings. The elevator is the necessary equipment of every high building, in order to guarantee the safety of elevator operation, need regularly to detect the heavy burden load of elevator to ensure that the elevator can send out the police dispatch newspaper when overweight, thereby can guarantee the smooth of elevator operation.
The lever principle can be applied to the in-process of detecting elevator load among the prior art, one end of the lever is lifted by using the jack, the other end of the lever is utilized to apply pressure to the elevator so as to simulate the gravity applied by the weight, but the positions of the supporting points can not be adjusted by the detection lever in the prior art, so that when the elevator with different loads is detected, different lifting equipment needs to be replaced, the application range is small, and the position of the action point of one end of the lever in the process of applying force to the bottom of the elevator car is easy to shift, so that the accuracy of a detection result is easy to influence.
Disclosure of Invention
Therefore, the embodiment of the invention provides an elevator load detection device based on a lever principle, the position of a fulcrum can be changed by driving a movable frame to move at the outer end of a lever by using a motor and two threaded rods, so as to expand the application range of the elevator load detection device, and a fan is used for evacuating air in a rubber suction cup to fix the positions of a second hollow rod and a first hollow rod so as to prevent a force application point from deviating, so that the influence on a measurement result can be avoided, and the problems that the application range is small and the detection result is influenced due to the fact that the fulcrum of the lever cannot be adjusted and the force application point is easy to deviate in the prior art are solved.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: an elevator load detection device based on a lever principle comprises a lever, wherein an adjusting mechanism and a fixing mechanism are arranged at the outer end of the lever, and the fixing mechanism is arranged at the bottom of the adjusting mechanism;
the adjusting mechanism comprises a moving frame, the moving frame is sleeved at the outer end of the lever, the inner wall of the moving frame is contacted with the outer wall of the lever, the bottom of the moving frame is movably connected with a supporting seat through a rotating shaft, the supporting seat is arranged at the bottom of the lever, fixed plates are fixedly arranged at the two ends of the front side and the rear side of the lever, movable plates are fixedly arranged at the front side and the rear side of the moving frame, threaded rods are arranged at the front side and the rear side of the lever, the threaded rods are arranged between the two fixed plates and penetrate through one of the fixed plates to extend out of one side of the fixed plate, the threaded rods are movably connected with the two fixed plates through bearings, the two threaded rods penetrate through the two movable plates and are in threaded connection with the movable plates, a first belt pulley is fixedly arranged at one end of the threaded rods, a second belt pulley is arranged at the top of the first belt pulley, and a belt is arranged between the second belt pulley and the first belt pulley, the second belt pulley and the belt are arranged on one side of the lever, a rotating shaft is fixedly arranged on one side of the second belt pulley and arranged at the top of the lever, a motor is arranged on one side of the rotating shaft, one end of the rotating shaft is fixedly connected with an output shaft of the motor, the motor is arranged at the top of the lever, an iron core is fixedly arranged in the lever, electromagnets are fixedly arranged at the top end and the bottom in the movable frame, and the electromagnets are adsorbed with the iron core;
the fixing mechanism comprises a second vertical rod, the top end of the second vertical rod is connected with one side of the bottom of the lever through a movable hinged support, a second hollow rod is arranged at the outer end of the second vertical rod, one end of the second vertical rod extends into the second hollow rod, a first vertical rod is arranged at the other side of the bottom of the lever, the top end of the first vertical rod is connected with one side of the top of the lever through the movable hinged support, a piston plate is fixedly arranged at the bottom end of the first vertical rod, a rubber ring is fixedly arranged at the outer end of the piston plate, a first hollow rod is arranged at the outer end of the rubber ring, air boxes are fixedly arranged at the bottoms of the first hollow rod and the second hollow rod, rubber suckers are fixedly arranged at the bottom of the air boxes, air vents are respectively formed in the bottoms of the air boxes and the tops of the rubber suckers, the rubber suckers are communicated with the interior of the air boxes, corrugated pipes are fixedly arranged at one side, close to the supporting support, one end of the corrugated pipe extends into the supporting base, the utility model discloses a fan, including supporting seat, bellows, fan front side air outlet, threaded sleeve, air inlet pipe one end, the supporting seat bottom is seted up flutedly, the bellows is linked together with the recess, the inside fan that is equipped with of supporting seat, the fixed sealed shell that is equipped with in fan front side air suction opening department, the fixed standpipe that is equipped with in sealed shell bottom, the standpipe bottom passes the supporting seat and extends into inside the recess, fan one side air outlet outer end threaded connection has the thread bush, the fixed intake pipe that is equipped with in thread bush one side, intake pipe one end extends into inside first hollow pole, the intake pipe is linked together with first hollow pole is inside, the fixed a plurality of telescopic links that are equipped with in supporting seat bottom, it is a plurality of telescopic link evenly distributed is in four corners in supporting seat bottom, the bottom plate bottom end is fixed is equipped with the bottom plate, the bottom plate top is equipped with control mechanism.
Furthermore, the inside bottom mounting of the hollow pole of second is equipped with first spring, first spring top and second montant bottom fixed connection.
Furthermore, an electromagnet controller is fixedly arranged at the top of the movable frame.
Furthermore, the top and the bottom of the lever are both provided with a moving groove, and the electromagnet is arranged inside the moving groove.
Furthermore, a supporting plate is fixedly arranged on one side of the top of the lever, the rotating shaft penetrates through the supporting plate, and the rotating shaft is movably connected with the supporting plate through a bearing.
Further, control mechanism is including dabbing the switch, dabbing the switch and fixed establishing in the middle of the bottom plate top, the inlet tube outside end is fixed and is equipped with first solenoid valve, the fixed pipe that loses heart that is equipped with in thread bush top, it is inside that pipe one end that loses heart extends into the thread bush, it is fixed and is equipped with the second solenoid valve to lose heart outside end, the second solenoid valve is established at the thread bush top.
Further, a plurality of through-holes have been seted up to supporting seat bottom, the inside grafting of through-hole has a plurality of rubber stoppers, the fixed second spring that is equipped with in rubber stopper top, second spring top and recess inner chamber top fixed connection, the through-hole bottom is equipped with the inserted bar, inserted bar bottom and bottom plate top fixed connection.
Furthermore, an annular baffle is fixedly arranged at the bottom end inside the first hollow rod, and the top of the annular baffle is in contact with the bottom of the piston plate.
Furthermore, the outer end of the telescopic rod is provided with a third spring, and the third spring is fixedly arranged between the bottom plate and the supporting seat.
The embodiment of the invention has the following advantages:
1. according to the invention, the movable frame is sleeved at the outer end of the lever, the position of the movable frame is adjusted by utilizing the two threaded rods and the motor, and the supporting seat is arranged at the bottom of the movable frame, so that the position of the fulcrum can be flexibly changed;
2. according to the invention, the bellows and the rubber sucker are arranged at the bottom ends of the first hollow rod and the second hollow rod, the bellows and the fan are used for pumping out gas in the rubber sucker and the bellows, so that the interior of the rubber sucker can be in a vacuum state, and then the two rubber suckers are respectively fixed on the top of the elevator car and the top of the floor under the action of atmospheric pressure, so that the position of the force application point of the invention can be fixed, and the force application point is prevented from deviating in the detection process and the accuracy of the detection result is prevented from being influenced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is a cross-sectional view of the lever and the support base provided by the present invention;
FIG. 3 is a side view of a first pulley and a second pulley provided by the present invention;
FIG. 4 is an enlarged view of A of FIG. 2 according to the present invention;
FIG. 5 is an enlarged view of B of FIG. 2 according to the present invention;
FIG. 6 is a side view of a moving frame provided by the present invention;
fig. 7 is a perspective view of a lever provided by the present invention.
In the figure: 1 lever, 2 moving frames, 3 fixed plates, 4 moving plates, 5 threaded rods, 6 first belt pulleys, 7 second belt pulleys, 8 belts, 9 rotating shafts, 10 motors, 11 iron cores, 12 electromagnets, 13 first vertical rods, 14 piston plates, 15 first hollow rods, 16 rubber rings, 17 air inlet pipes, 18 second vertical rods, 19 second hollow rods, 20 first springs, 21 supporting seats, 22 fans, 23 threaded sleeves, 24 sealing shells, 25 vertical pipes, 26 grooves, 27 corrugated pipes, 28 air boxes, 29 rubber suction cups, 30 tact switches, 31 first electromagnetic valves, 32 air release pipes, 33 second electromagnetic valves, 34 rubber plugs, 35 second springs, 36 through holes, 37 inserted rods, 38 telescopic rods, 39 third springs and 40 bottom plates.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings 1-3, 6 and 7 in the specification, the elevator load detection device based on the lever principle of the embodiment comprises a lever 1, wherein an adjusting mechanism and a fixing mechanism are arranged at the outer end of the lever 1, and the fixing mechanism is arranged at the bottom of the adjusting mechanism;
the adjusting mechanism comprises a moving frame 2, the moving frame 2 is sleeved at the outer end of a lever 1, the inner wall of the moving frame 2 is in contact with the outer wall of the lever 1, the bottom of the moving frame 2 is movably connected with a supporting seat 21 through a rotating shaft, the supporting seat 21 is arranged at the bottom of the lever 1, fixed plates 3 are fixedly arranged at the front side and the rear side of the lever 1, moving plates 4 are fixedly arranged at the front side and the rear side of the moving frame 2, threaded rods 5 are arranged at the front side and the rear side of the lever 1, the threaded rods 5 are arranged between the two fixed plates 3 and penetrate one of the fixed plates 3 to extend out of one side of the fixed plate 3, the threaded rods 5 are movably connected with the two fixed plates 3 through bearings, the two threaded rods 5 penetrate through the two moving plates 4 and are connected with the moving plates 4 through threads, a first belt pulley 6 is fixedly arranged at one end of the threaded rods 5, and a second belt pulley 7 is arranged at the top of the first belt pulley 6, be equipped with belt 8 between second belt pulley 7 and the first belt pulley 6, second belt pulley 7 and belt 8 all establish in 1 one side of lever, 7 one sides of second belt pulley are fixed and are equipped with pivot 9, pivot 9 is established at 1 top of lever, 9 one sides of pivot are equipped with motor 10, 9 one end of pivot and motor 10 output shaft fixed connection, motor 10 is established at 1 top of lever, 1 inside fixed iron core 11 that is equipped with of lever, it all fixes and is equipped with electro-magnet 12 to remove 2 inside tops of frame and bottom, electro-magnet 12 adsorbs mutually with iron core 11, is convenient for through the fixed position of removing frame 2 of iron core 11 and electro-magnet 12 to can fix the position of fulcrum.
Further, a first spring 20 is fixedly arranged at the bottom end inside the second hollow rod 19, and the top end of the first spring 20 is fixedly connected with the bottom of the second vertical rod 18, so that the second vertical rod 18 can be supported conveniently.
Further, an electromagnet controller is fixedly arranged at the top of the movable frame 2, so that the electromagnet 12 can be controlled conveniently.
Furthermore, the top and the bottom of the lever 1 are both provided with a moving groove, and the electromagnet 12 is arranged in the moving groove, so that the electromagnet 12 can move conveniently, and the position of the fulcrum can be adjusted.
Further, a supporting plate is fixedly arranged on one side of the top of the lever 1, the rotating shaft 9 penetrates through the supporting plate, and the rotating shaft 9 is movably connected with the supporting plate through a bearing, so that the position of the rotating shaft 9 is convenient to fix.
The implementation scenario is specifically as follows: when the elevator load is detected by using the invention, the invention can be moved to a proper position, the second hollow rod 19 is placed in the elevator car, the first hollow rod 15 is placed outside the elevator car, then the position of the movable frame 2 can be adjusted according to the reagent load of the elevator, so that the position of a fulcrum can be changed, when the actual load of the elevator is larger, the movable frame 2 can be moved to one side close to the second hollow rod 19, so that the length of a power arm can be prolonged, and the length of a resistance arm can be shortened, and the power applied by a power end of the power arm is smaller when the length of the power arm is longer according to the lever principle, so that the invention can be suitable for the elevator with larger load by adjusting the position of the fulcrum, so that the application range of the invention can be expanded, and the specific operation is as follows: can close electro-magnet 12 through the electromagnet controller for electro-magnet 12 and iron core 11 no longer adsorb, then can start motor 10, utilize motor 10 to drive pivot 9 and rotate, and drive second belt pulley 7 through pivot 9 and rotate, make second belt pulley 7 can drive two first belt pulleys 6 through belt 8 and rotate, and can drive threaded rod 5 through first belt pulley 6 and rotate, because movable plate 4 passes through threaded connection with threaded rod 5, threaded rod 5 can drive movable plate 4 and remove frame 2 and remove along 1 outer end of lever at the pivoted in-process, remove frame 2 and can drive the supporting seat 21 removal of bottom at the in-process that removes, thereby can change the position of fulcrum, this embodiment has specifically solved the less problem of application range that the unable regulation of fulcrum position leads to among the prior art.
Referring to the attached drawings 1-5 in the specification, the elevator load detection device based on the lever principle of the embodiment further comprises a fixing mechanism, the fixing mechanism comprises a second vertical rod 18, the top end of the second vertical rod 18 is connected with one side of the bottom of the lever 1 through a movable hinged support, a second hollow rod 19 is arranged at the outer end of the second vertical rod 18, one end of the second vertical rod 18 extends into the second hollow rod 19, a first vertical rod 13 is arranged at the other side of the bottom of the lever 1, the top end of the first vertical rod 13 is connected with one side of the top of the lever 1 through a movable hinged support, a piston plate 14 is fixedly arranged at the bottom end of the first vertical rod 13, a rubber ring 16 is fixedly arranged at the outer end of the piston plate 14, a first hollow rod 15 is arranged at the outer end of the rubber ring 16, air bellows 28 is fixedly arranged at the bottoms of the first hollow rod 15 and the second hollow rod 19, a rubber suction cup 29 is fixedly arranged at the bottom of the air bellows 28, the bottom of the bellows 28 and the top of the rubber sucker 29 are both provided with vent holes, the rubber sucker 29 is communicated with the inside of the bellows 28, one side of each of the two bellows 28, which is close to the support seat 21, is fixedly provided with a bellows 27, one end of the bellows 27 extends into the support seat 21, the bottom of the support seat 21 is provided with a groove 26, the bellows 27 is communicated with the groove 26, the inside of the support seat 21 is provided with a fan 22, the front side air suction port of the fan 22 is fixedly provided with a seal shell 24, the bottom of the seal shell 24 is fixedly provided with a vertical pipe 25, the bottom end of the vertical pipe 25 penetrates through the support seat 21 and extends into the groove 26, the outer end of the air outlet at one side of the fan 22 is in threaded connection with a threaded sleeve 23, one side of the threaded sleeve 23 is fixedly provided with an air inlet pipe 17, one end of the air inlet pipe 17 extends into the first hollow rod 15, and the air inlet pipe 17 is communicated with the inside of the first hollow rod 15, the bottom of the supporting seat 21 is fixedly provided with a plurality of telescopic rods 38, the telescopic rods 38 are uniformly distributed at four corners of the bottom of the supporting seat 21, the bottom end of each telescopic rod 38 is fixedly provided with a bottom plate 40, and the top of each bottom plate 40 is provided with a control mechanism, so that the positions of the first hollow rod 15 and the second hollow rod 19 can be conveniently fixed, and the force application points can be prevented from deviating.
Further, control mechanism is including dabbing switch 30, dabbing switch 30 and fixed establishing in the middle of bottom plate 40 top, the fixed first solenoid valve 31 that is equipped with in intake pipe 17 outer end, the fixed pipe 32 that loses heart that is equipped with in threaded sleeve 23 top, it is inside that pipe 32 one end that loses heart extends into threaded sleeve 23, the fixed second solenoid valve 33 that is equipped with in pipe 32 outer end loses heart, second solenoid valve 33 is established at threaded sleeve 23 top, and it is inside that the control gas of being convenient for gets into intake pipe 17.
Further, a plurality of through-holes 36 have been seted up to supporting seat 21 bottom, through-hole 36 is inside to be pegged graft and is had a plurality of rubber stoppers 34, the fixed second spring 35 that is equipped with in rubber stopper 34 top, second spring 35 top and recess 26 inner chamber top fixed connection, through-hole 36 bottom is equipped with inserted bar 37, inserted bar 37 bottom and bottom plate 40 top fixed connection are convenient for extract gas.
Further, an annular baffle is fixedly arranged at the bottom end inside the first hollow rod 15, and the top of the annular baffle is in contact with the bottom of the piston plate 14, so that the position of the piston plate 14 is limited conveniently, and the air inlet pipe 17 can conveniently inflate the inside of the first hollow rod 15.
Further, the outer end of telescopic link 38 is equipped with third spring 39, third spring 39 is fixed to be equipped with between bottom plate 40 and the supporting seat 21, is convenient for slow down vibrations to can improve the stability in the whole equipment course of operation.
The implementation scenario is specifically as follows: after the position of the fulcrum is adjusted, the fan 22 can be started, so that the fan 22 starts to work, then the fan 22 can extract the gas inside the groove 26 through the seal shell 24 and the vertical pipe 25 in the working process, and then the gas is extracted into the air inside the bellows 28 through the bellows 27, because the bellows 28 is communicated with the rubber suction cup 29, the fan 22 can extract the inside of the rubber suction cup 29 in the working process, so that a vacuum environment can be formed inside the rubber suction cup 29, then the rubber suction cup 29 can be pressed downwards by the external atmospheric pressure, so that the rubber suction cup 29 can be fixed at a specified place, the positions of the second hollow rod 19 and the first hollow rod 15 can be fixed, the position of the second hollow rod 19 can be prevented from being deviated in the detection process, the precision of the detection result can be prevented, and the second hollow rod 19 and the first hollow rod 15 can have a small downward displacement after the rubber suction cup 29 is pressed, then the second hollow rod 19 and the first hollow rod 15 will drive the supporting seat 21 to move downwards through the lever 1, so as to compress the telescopic rod 38 and the third spring 39 downwards, and the top end of the inserting rod 37 of the supporting seat 21 will be inserted into the through hole 36 and will drive the rubber stopper 34 to move upwards in the downward moving process, so that the rubber stopper 34 cannot continue to block the through hole 36, when the gas in the rubber suction cup 29 is exhausted, the blower 22 can extract the external gas through the through hole 36, and the extracted gas will be discharged through the gas release pipe 32 on the threaded sleeve 23, so as to ensure the smooth proceeding of the air extracting operation, the supporting seat 21 will contact with the tact switch 30 at the top of the bottom plate 40 while moving downwards, so as to close the second electromagnetic valve 33 in time and open the first electromagnetic valve 31, so that the gas extracted by the blower 22 can enter the gas inlet pipe 17, and can enter the inside of the first hollow rod 15 through the air inlet pipe 17, and then, as the air inside the first hollow rod 15 is gradually increased, the air pushes the piston plate 14 and the rubber ring 16 to move upwards, and the piston plate 14 pushes the first vertical rod 13 to move upwards, so that the top end of the first vertical rod 13 can drive one end of the lever 1 at the top end to lift upwards, meanwhile, the other end of the lever 1 rotates downwards around the fulcrum, and the second vertical rod 18 is driven to move downwards in the process of rotating downwards, and during the movement, presses the first spring 20 downwards, so that the first spring 20 can apply a downward force to the inner bottom end of the second hollow rod 19, and the bellows 28 and the rubber suction cup 29 at the bottom of the second hollow bar 19 will transmit this force to the elevator car, therefore, the force applied by the stacked weights on the elevator car can be simulated, so that the detection of the elevator load can be carried out.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. An elevator load detection device based on lever principle, includes lever (1), its characterized in that: the outer end of the lever (1) is provided with an adjusting mechanism and a fixing mechanism, and the fixing mechanism is arranged at the bottom of the adjusting mechanism;
the adjusting mechanism comprises a moving frame (2), the moving frame (2) is sleeved at the outer end of a lever (1), the inner wall of the moving frame (2) is in contact with the outer wall of the lever (1), the bottom of the moving frame (2) is connected with a supporting seat (21) through a rotating shaft in a movable manner, the supporting seat (21) is arranged at the bottom of the lever (1), fixed plates (3) are fixedly arranged at the front side and the rear side of the lever (1), moving plates (4) are fixedly arranged at the front side and the rear side of the moving frame (2), threaded rods (5) are arranged at the front side and the rear side of the lever (1), the threaded rods (5) are arranged between the two fixed plates (3) and penetrate through one of the fixed plates (3) to extend out of one side of the fixed plates (3), the threaded rods (5) are movably connected with the two fixed plates (3) through bearings, and the two threaded rods (5) penetrate through the two moving plates (4) and are connected with the moving plates (4) through threads, a first belt pulley (6) is fixedly arranged at one end of the threaded rod (5), a second belt pulley (7) is arranged at the top of the first belt pulley (6), a belt (8) is arranged between the second belt pulley (7) and the first belt pulley (6), the second belt wheel (7) and the belt (8) are both arranged on one side of the lever (1), a rotating shaft (9) is fixedly arranged on one side of the second belt pulley (7), the rotating shaft (9) is arranged on the top of the lever (1), a motor (10) is arranged on one side of the rotating shaft (9), one end of the rotating shaft (9) is fixedly connected with an output shaft of the motor (10), the motor (10) is arranged at the top of the lever (1), an iron core (11) is fixedly arranged in the lever (1), electromagnets (12) are fixedly arranged at the top end and the bottom inside the movable frame (2), and the electromagnets (12) are adsorbed to the iron core (11);
the fixing mechanism comprises a second vertical rod (18), the top end of the second vertical rod (18) is connected with one side of the bottom of the lever (1) through a movable hinged support, a second hollow rod (19) is arranged at the outer end of the second vertical rod (18), one end of the second vertical rod (18) extends into the second hollow rod (19), a first vertical rod (13) is arranged at the other side of the bottom of the lever (1), the top end of the first vertical rod (13) is connected with one side of the top of the lever (1) through a movable hinged support, a piston plate (14) is fixedly arranged at the bottom end of the first vertical rod (13), a rubber ring (16) is fixedly arranged at the outer end of the piston plate (14), a first hollow rod (15) is arranged at the outer end of the rubber ring (16), an air box (28) is fixedly arranged at the bottoms of the first hollow rod (15) and the second hollow rod (19), and a rubber sucking disc (29) is fixedly arranged at the bottom of the air box (28), vent holes are formed in the bottom of the air box (28) and the top of the rubber sucker (29), the rubber sucker (29) is communicated with the inside of the air box (28), corrugated pipes (27) are fixedly arranged on one sides, close to the supporting seat (21), of the two air boxes (28), the air box (28) and the rubber sucker (29) are installed at the bottom ends of the first hollow rod (15) and the second hollow rod (19), air in the rubber sucker (29) and the air box (28) is pumped out through the corrugated pipes (27) and the fan (22), the inside of the rubber sucker (29) can be in a vacuum state, and then the two rubber suckers (29) are respectively fixed on the top of an elevator car and the top of a floor under the action of atmospheric pressure, so that the positions of force application points can be fixed; placing a second hollow rod (19) inside an elevator car, placing a first hollow rod (15) outside the car, adjusting the position of a movable frame (2) according to the actual load of the elevator, so that the position of a fulcrum can be changed, wherein one end of a corrugated pipe (27) extends into a support seat (21), a groove (26) is formed in the bottom of the support seat (21), the corrugated pipe (27) is communicated with the groove (26), a fan (22) is arranged inside the support seat (21), a sealing shell (24) is fixedly arranged at an air suction opening on the front side of the fan (22), a vertical pipe (25) is fixedly arranged at the bottom of the sealing shell (24), the bottom end of the vertical pipe (25) penetrates through the support seat (21) and extends into the groove (26), a threaded sleeve (23) is connected to the outer end of an air outlet on one side of the fan (22) in a threaded manner, and an air inlet pipe (17) is fixedly arranged on one side of the threaded sleeve (23), intake pipe (17) one end extends into inside first hollow pole (15), intake pipe (17) are linked together with first hollow pole (15) is inside, fixed a plurality of telescopic links (38) that are equipped with in supporting seat (21) bottom, it is a plurality of telescopic link (38) evenly distributed is in four corners in supporting seat (21) bottom, telescopic link (38) bottom mounting is equipped with bottom plate (40), bottom plate (40) top is equipped with control mechanism.
2. The elevator load detecting apparatus based on the lever principle according to claim 1, wherein: the bottom end of the interior of the second hollow rod (19) is fixedly provided with a first spring (20), and the top end of the first spring (20) is fixedly connected with the bottom of the second vertical rod (18).
3. The elevator load detecting apparatus based on the lever principle according to claim 1, wherein: an electromagnet controller is fixedly arranged at the top of the movable frame (2).
4. The elevator load detecting apparatus based on the lever principle according to claim 1, wherein: the top and the bottom of the lever (1) are both provided with a moving groove, and the electromagnet (12) is arranged in the moving groove.
5. The elevator load detecting apparatus based on the lever principle according to claim 1, wherein: the supporting plate is fixedly arranged on one side of the top of the lever (1), the rotating shaft (9) penetrates through the supporting plate, and the rotating shaft (9) is movably connected with the supporting plate through a bearing.
6. The elevator load detecting apparatus based on the lever principle according to claim 1, wherein: control mechanism is including dabbing switch (30), dabbing switch (30) and fixing and establishing in the middle of bottom plate (40) top, intake pipe (17) outer end is fixed and is equipped with first solenoid valve (31), thread bush (23) top is fixed and is equipped with disappointing pipe (32), it is inside that disappointing pipe (32) one end extends into thread bush (23), it is fixed and is equipped with second solenoid valve (33) to lose heart pipe (32) outer end, establish at thread bush (23) top second solenoid valve (33).
7. The elevator load detecting apparatus based on the lever principle according to claim 1, wherein: a plurality of through-holes (36) have been seted up to supporting seat (21) bottom, through-hole (36) inside is pegged graft and is had a plurality of rubber stoppers (34), fixed second spring (35) that are equipped with in rubber stopper (34) top, second spring (35) top and recess (26) inner chamber top fixed connection, through-hole (36) bottom is equipped with inserted bar (37), inserted bar (37) bottom and bottom plate (40) top fixed connection.
8. The elevator load detecting apparatus based on the lever principle according to claim 1, wherein: an annular baffle is fixedly arranged at the bottom end in the first hollow rod (15), and the top of the annular baffle is contacted with the bottom of the piston plate (14).
9. The elevator load detecting apparatus based on the lever principle according to claim 1, wherein: the outer end of the telescopic rod (38) is provided with a third spring (39), and the third spring (39) is fixedly arranged between the bottom plate (40) and the supporting seat (21).
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