Load monitoring and early warning device for elevator

Abstract

The invention relates to the technical field of elevator early warning, in particular to an elevator load monitoring and early warning device which comprises an elevator body, a car body is arranged on the upper surface of the elevator body, a top plate is mounted on the right side surface of the car body, a standing plate is mounted on the top surface of the elevator body, and a weighing module is mounted in the elevator body. The weighing module is in contact with the lower surface of the standing plate, supporting frames are arranged on the outer surface of the weighing module, the number of the supporting frames is four, and the four supporting frames are evenly installed on the outer surface of the weighing module; and the electric push rod is mounted on the inner wall of the elevator body. An alarm can be given out through the alarm body, people can be reminded not to enter the surface of the standing plate, so that the overall early warning effect is good, early warning reminding can be carried out before an overload state is about to be reached, the situation that follow-up people go out of an elevator again is avoided, and the riding comfort of the people is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator early warning technology, in particular to a load monitoring and early warning device for an elevator. Background Art

[0002] An elevator is a permanent transportation device that serves several specific floors in a building, with its car running on at least two rigid tracks that are perpendicular to the horizontal plane or inclined at an angle of less than 15° to the plumb line. There are also step-type ones, with the treads installed on the tracks and running continuously, commonly known as escalators or moving walkways. Fixed lifting equipment that serves specified floors. A vertical lift has a car.

[0003] In this regard, China applied for patent number: CN111207862B, which discloses a high-precision pressure measurement method for bridge overload and rollover warning, which solves the problem of large error and low precision of existing bridge pressure measurement methods. The present invention proposes a two-dimensional temperature sensing method based on dynamic inductance L1 and dynamic resistance R1, and combines the anti-resonance frequency to measure pressure; the method includes the following steps: step S1, measure the equivalent parameters of the piezoelectric sensor based on a vector network analyzer; step S2, according to the equivalent parameters of the piezoelectric sensor measured in step S1, establish a two-dimensional relationship T=FT(R1, L1) between the dynamic inductance L1, dynamic resistance R1 and temperature T in the equivalent parameters, and realize the temperature sensing of the piezoelectric sensor; step S3, according to step S2, use a binary temperature compensation method to compensate the pressure-frequency curve, and then calculate the pressure P.

[0004] However, in actual use of elevators, when the elevator is carrying people, it usually only sounds an alarm after it is overloaded to remind passengers that the elevator is overloaded. At this time, the passengers need to get off the elevator. Due to the heavy overload, there are more passengers getting off the elevator at this time. When the passengers get off the elevator, the alarm disappears and the elevator can move normally. This design cannot sound the alarm in advance when the alarm is issued, which wastes a lot of time, affects the elevator riding experience, and the overall comfort is poor, which has certain limitations in early warning. Therefore, it has become an urgent problem to be solved for us to improve and perfect the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a load monitoring and early warning device for an elevator to solve the problem proposed in the above background technology that when a general elevator is carrying people, the elevator usually issues an alarm only after it is overloaded to remind passengers that the elevator is overloaded. At this time, the passengers need to get off the elevator. Since the overloaded weight is large, there are many passengers getting off the elevator at this time. When the passengers get off the elevator, the alarm sound disappears and the elevator can then move normally. This design cannot sound the alarm in advance when issuing an alarm, thereby wasting a lot of time, affecting the elevator riding experience, and the overall comfort is poor, thereby having certain limitations in early warning.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a load monitoring and early warning device for an elevator, comprising an elevator body, a car body is arranged on the upper surface of the elevator body, a top plate is installed on the right side surface of the car body, a standing plate is installed on the top surface of the elevator body, a weighing module is installed inside the elevator body, the weighing module is in contact with the lower surface of the standing plate, a support frame is arranged on the outer surface of the weighing module, the support frame is arranged in four groups, and the four groups of the support frames are evenly installed on the outer surface of the weighing module;

[0007] An electric push rod, the electric push rod is installed on the inner wall of the elevator body, a detection cylinder is installed inside the elevator body, a sliding groove is opened on the right surface of the detection cylinder, a sliding block is slidably installed inside the sliding groove, a stabilizing block is installed on the top surface of the sliding block, a resistance ring is fixedly connected to the left surface of the sliding block, a first pressure sensor is installed on the inner wall of the detection cylinder, a first sliding ring is arranged inside the detection cylinder, and a compression spring is installed on the front surface of the first sliding ring.

[0008] Preferably, one end of the compression spring away from the first sliding ring is fixedly connected to the second sliding ring, a telescopic rod is provided on the back of the second sliding ring, and two groups of telescopic rods are provided. The second sliding ring, the first sliding ring and the first pressure sensor and the detection cylinder are adapted to each other.

[0009] Preferably, a support seat is installed on the inner bottom wall of the standing board, and a bidirectional motor is installed on the top surface of the support seat.

[0010] Preferably, a winding roller is installed on the front surface of the bidirectional motor, and a winding rope is installed on the outer surface of the winding roller.

[0011] Preferably, a support block is installed inside the standing board, a stabilizing frame is installed on the top surface of the support block, a limiting shaft is installed on the inner side wall of the stabilizing frame, and the outer surface of the limiting shaft contacts the outer surface of the winding rope.

[0012] Preferably, a rising ring is installed at the lower end of the winding rope, a resistance block is installed on the top surface of the rising ring, and a second pressure sensor is provided on the top surface of the resistance block.

[0013] Preferably, a first bevel gear column is installed on the back of the bidirectional motor, a second bevel gear column is meshingly connected to the back of the first bevel gear column, and a limit plate is installed on the right surface of the second bevel gear column.

[0014] Preferably, a third bevel gear column is fixedly connected to the left side of the second bevel gear column, a fourth bevel gear column is meshedly connected to the front surface of the third bevel gear column, a rotating gear is installed at the lower end of the fourth bevel gear column, and a rack plate is meshedly connected to the left side surface of the rotating gear.

[0015] Preferably, a moving board is installed on the front surface of the rack plate, a rubber ring is installed on the front surface of the moving board, and an impact ball is installed on the front surface of the rubber ring.

[0016] Preferably, an impact bar is installed inside the standing board, the back side of the impact bar is in contact with the impact ball, an alarm body is installed at the middle end of the standing board, and the alarm body is electrically connected to the second pressure sensor.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The load monitoring and early warning device for elevators is provided with an elevator body, a standing board, a weighing module, a support frame, an electric push rod, a detection tube, a sliding groove, a stabilizing block, a sliding block, a contact ring, a first pressure sensor, a first sliding ring, a compression spring, a second sliding ring and a telescopic rod. When in use, when a passenger stands on the surface of the standing board, the weight of the surface of the standing board can be calculated through the design of the standing board, the weighing module and the support frame. When the overload weight is approaching, the weighing module sends a signal to the electric push rod, and then the electric push rod moves forward. At this time, the electric push rod will slowly contact the stabilizing block and the sliding block, and then the stabilizing block and the sliding block will drive the contact ring to slide inside the sliding groove, and then the contact ring will continue to move forward inside the detection tube, and then the front surface of the contact ring will contact the back of the first sliding ring, and then the first sliding ring will drive the compression spring and the telescopic rod to move forward, and then the second sliding ring will also move with the compression spring and the telescopic rod, and then the second sliding ring will contact the back of the first pressure sensor, and then the first sliding ring will continue to resist and press, and then the compression spring is compressed. After retraction, the compression state of the compression spring is limited by the telescopic rod, and the overall limiting effect is good. Then, when the first pressure sensor feels the pressure, it proves that there are more people standing on the surface of the standing board. Then, a signal is sent to the bidirectional motor through the first pressure sensor, and then the bidirectional motor drives the winding roller to rotate, and then the winding roller can drive the winding rope to rotate, and then the winding rope will be wrapped around the surface of the winding roller, so that the winding roller can reel in the winding rope, and then the winding rope will be limited and transported on the surface of the limiting shaft, and the rising ring will rise, so that the resistance block will also rise, and when the second pressure sensor on the top surface of the resistance block resists the lower end surface of the stable frame, the bidirectional motor stops moving, and at the same time, the second pressure sensor on the top surface of the resistance block sends an electrical signal to the alarm body, so that the alarm body can sound an alarm, and can remind people not to enter the surface of the standing board, so that the overall warning effect is good, and can give a warning reminder before the overload state is about to be reached, thereby avoiding the situation where subsequent people get off the elevator again, thereby improving the riding comfort of the people and reflecting the functionality of the design.

[0019] 2. The load monitoring and early warning device for an elevator comprises a first bevel gear column, a second bevel gear column, a limit plate, a third bevel gear column, a fourth bevel gear column, a rotating gear, a rack plate, a moving plate, a rubber ring, an impact ball and an impact bar. When the bidirectional motor is in use, the bidirectional motor will also drive the first bevel gear column to rotate, and then the first bevel gear column is meshed with the second bevel gear column, so that the second bevel gear column will also rotate, and the third bevel gear column is driven to rotate by the second bevel gear column, and then the rotation stability of the second and third bevel gear columns can be enhanced by the limit plate, and at the same time, the third bevel gear column is also meshed with the fourth bevel gear column, so that the fourth bevel gear column will also rotate, and then the first bevel gear column is meshed with the second bevel gear column, so that the fourth bevel gear column will also rotate, and then the third bevel gear column is meshed with the fourth bevel gear column, so that the fourth bevel gear column will also rotate. The four-conical gear column will drive the rotating gear to rotate, so that when the rotating gear rotates, the rack plate will move forward, and the rack plate will drive the moving plate to move forward, and then the moving plate will drive the rubber ring and the impact ball to hit the back of the impact bar, so that the impact ball will make a sound when it hits the impact bar, and these sounds can remind people to a large extent, thus solving the problem that the warning can only be given after overloading in the past, and it can also avoid the situation where most people get off the elevator, so that the overall warning effect is better. This design can give a warning before the overload is about to occur, so that more people can be avoided from standing on the surface of the standing board after the warning, which reflects the ingenuity of the design. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the disassembly of the elevator body and the standing board structure of the present invention;

[0022] Figure 3 It is a three-dimensional schematic diagram of the detection tube and the electric push rod structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the disassembly of the detection tube and the interference ring structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the disassembly of the detection tube and the first pressure sensor structure of the present invention;

[0025] Figure 6 It is a cross-sectional schematic diagram of the detection tube structure of the present invention;

[0026] Figure 7 It is a three-dimensional schematic diagram of the third tapered gear column and the stabilizing frame structure of the present invention;

[0027] Figure 8 It is a three-dimensional schematic diagram of the stabilizing frame and winding roller structure of the present invention;

[0028] Fig. 9 It is a three-dimensional schematic diagram of the impact bar and the rotating gear structure of the present invention;

[0029] Fig.10 It is a cross-sectional schematic diagram of the top plate structure of the present invention.

[0030] In the figure: 1. elevator body; 2. car body; 3. top plate; 4. standing plate; 5. weighing module; 6. support frame; 7. electric push rod; 8. detection tube; 9. sliding groove; 10. stabilizing block; 11. sliding block; 12. contact ring; 13. first pressure sensor; 14. first sliding ring; 15. compression spring; 16. second sliding ring; 17. telescopic rod; 18. support seat; 19. bidirectional motor; 20. winding roller; 21. winding rope; 22. support block; 23. stabilizing frame; 24. limiting shaft; 25. rising ring; 26. contact block; 27. first conical gear column; 28. second conical gear column; 29. ​​limiting plate; 30. third conical gear column; 31. fourth conical gear column; 32. rotating gear; 33. rack plate; 34. moving plate; 35. rubber ring; 36. impact ball; 37. impact bar; 38. alarm body. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 10 , an embodiment provided by the present invention:

[0033] A load monitoring and early warning device for an elevator. The elevator body 1, car body 2, top plate 3, standing plate 4, weighing module 5, electric push rod 7, first pressure sensor 13, telescopic rod 17, bidirectional motor 19 and alarm body 38 used in this application are all products that can be directly purchased on the market. Their principles and connection methods are all existing technologies well known to those skilled in the art, so they are not repeated here. It includes an elevator body 1, a car body 2 is arranged on the upper surface of the elevator body 1, a top plate 3 is installed on the right side surface of the car body 2, a standing plate 4 is installed on the top surface of the elevator body 1, a weighing module 5 is installed inside the elevator body 1, the weighing module 5 is in contact with the lower surface of the standing plate 4, and a support frame 6 is arranged on the outer surface of the weighing module 5. The support frame 6 is provided with four groups, Four groups of support frames 6 are evenly installed on the outer surface of the weighing module 5, a support seat 18 is installed on the inner bottom wall of the standing plate 4, a bidirectional motor 19 is installed on the top surface of the support seat 18, a winding roller 20 is installed on the front surface of the bidirectional motor 19, and a winding rope 21 is installed on the outer surface of the winding roller 20, a support block 22 is installed inside the standing plate 4, a stabilizing frame 23 is installed on the top surface of the support block 22, a limiting shaft 24 is installed on the inner side wall of the stabilizing frame 23, the outer surface of the limiting shaft 24 contacts the outer surface of the winding rope 21, a rising ring 25 is installed on the lower end of the winding rope 21, a contact block 26 is installed on the top surface of the rising ring 25, and a second pressure sensor is arranged on the top surface of the contact block 26, a first bevel gear column 27 is installed on the back of the bidirectional motor 19, and the back surface of the first bevel gear column 27 A second bevel gear column 28 is meshedly connected to the surface, a limit plate 29 is installed on the right surface of the second bevel gear column 28, a third bevel gear column 30 is fixedly connected to the left side of the second bevel gear column 28, a fourth bevel gear column 31 is meshedly connected to the front surface of the third bevel gear column 30, a rotating gear 32 is installed at the lower end of the fourth bevel gear column 31, a rack plate 33 is meshedly connected to the left surface of the rotating gear 32, a moving plate 34 is installed on the front surface of the rack plate 33, a rubber ring 35 is installed on the front surface of the moving plate 34, an impact ball 36 is installed on the front surface of the rubber ring 35, an impact strip 37 is installed inside the standing plate 4, the back of the impact strip 37 is in contact with the impact ball 36, an alarm body 38 is installed at the middle end of the standing plate 4, and the alarm body 38 is connected to the second pressure sensor Telecommunication connection, when the bidirectional motor 19 rotates, the bidirectional motor 19 will also drive the first bevel gear column 27 to rotate, and then the first bevel gear column 27 is meshed with the second bevel gear column 28, so that the second bevel gear column 28 will also rotate, and the third bevel gear column 30 is driven to rotate by the second bevel gear column 28, and then the rotation stability of the second bevel gear column 28 and the third bevel gear column 30 can be enhanced by the limiting plate 29, and at the same time, the third bevel gear column 30 is also meshed with the fourth bevel gear column 31, so that the fourth bevel gear column 31 will also rotate, and then the fourth bevel gear column 31 will drive the rotating gear 32 to rotate, so that when the rotating gear 32 rotates, the rack plate 33 will move forward, and the rack plate 33 will drive the moving plate 34 to move forward,Then the moving plate 34 will drive the rubber ring 35 and the impact ball 36 to impact the back of the impact bar 37, so that the impact ball 36 will make a sound when it hits the impact bar 37, so that these sounds can remind people to a large extent, thereby solving the problem that the warning can only be given after overloading in the past, and at the same time, it can also avoid the situation where most people get off the elevator, so that the overall warning effect is better;,

[0034] An electric push rod 7 is installed on the inner wall of the elevator body 1. A detection cylinder 8 is installed inside the elevator body 1. A sliding groove 9 is provided on the right side surface of the detection cylinder 8. A sliding block 11 is slidably installed inside the sliding groove 9. A stabilizing block 10 is installed on the top surface of the sliding block 11. A resistance ring 12 is fixedly connected to the left surface of the sliding block 11. A first pressure sensor 13 is installed on the inner side wall of the detection cylinder 8. A first sliding ring 14 is arranged inside the detection cylinder 8. A compression spring 15 is installed on the front surface of the first sliding ring 14. A second sliding ring 16 is fixedly connected to one end of the compression spring 15 away from the first sliding ring 14. A telescopic rod 17 is arranged on the back of the second sliding ring 16. Two groups of telescopic rods 17 are arranged, the second sliding ring 16 and the first sliding ring 1 4 and the first pressure sensor 13 are adapted to each other with the detection tube 8. When the passenger stands on the surface of the standing board 4, the weight of the surface of the standing board 4 can be calculated through the design of the standing board 4, the weighing module 5 and the support frame 6. When it is close to the overload weight, the weighing module 5 sends a signal to the electric push rod 7, and then the electric push rod 7 moves forward. At this time, the electric push rod 7 will slowly contact the stabilizing block 10 and the sliding block 11, and then the stabilizing block 10 and the sliding block 11 will drive the contact ring 12 to slide inside the sliding groove 9, and then the contact ring 12 will continue to move forward inside the detection tube 8, and then the front surface of the contact ring 12 will contact the back of the first sliding ring 14, and then the first sliding ring 14 will drive the compression spring 15 and the telescopic spring 16 to move forward. The rod 17 moves forward, and then the second sliding ring 16 will also move with the compression spring 15 and the telescopic rod 17, and then the second sliding ring 16 will contact the back of the first pressure sensor 13, and then the first sliding ring 14 continues to resist and press, and then after the compression spring 15 is compressed, the compression state of the compression spring 15 is limited by the telescopic rod 17, and the overall limiting effect is good. Then, when the first pressure sensor 13 feels the pressure, it proves that there are more people standing on the surface of the standing board 4. Then, the first pressure sensor 13 sends a signal to the bidirectional motor 19, and then the bidirectional motor 19 drives the winding roller 20 to rotate, and then the winding roller 20 can drive the winding rope 21 to rotate, and then the winding rope 21 will be wrapped around the winding roller 20. The surface of the winding roller 20, so that the winding roller 20 can reel in the winding rope 21, and then the winding rope 21 will be limited and conveyed on the surface of the limiting shaft 24, at this time the rising ring 25 will rise, and the resistance block 26 will also rise, and when the second pressure sensor on the top surface of the resistance block 26 resists the lower end surface of the stabilizing frame 23, the bidirectional motor 19 stops moving, and at the same time, the second pressure sensor on the top surface of the resistance block 26 will send an electrical signal to the alarm body 38, so that the alarm body 38 can sound an alarm, which can remind people not to enter the surface of the standing board 4, so that the overall warning effect is better, and can give a warning before the overload state is about to be reached, thereby avoiding the situation where subsequent people get off the elevator again, thereby improving the riding comfort of the people.

[0035] Working principle: When the staff uses the device, first connect the device to an external power supply to provide power support for the device. When the passengers stand on the surface of the standing board 4, the weight of the surface of the standing board 4 can be calculated through the design of the standing board 4, the weighing module 5 and the support frame 6. When it is close to the overload weight, the weighing module 5 sends a signal to the electric push rod 7, and then the electric push rod 7 moves forward. At this time, the electric push rod 7 will slowly contact the stabilizing block 10 and the sliding block 11, and then the stabilizing block 10 and the sliding block 11 will drive the contact ring 12 to slide inside the sliding groove 9, and then the contact ring 12 will continue to move forward inside the detection tube 8, and then the front surface of the contact ring 12 will contact the back of the first sliding ring 14, and then The first sliding ring 14 will drive the compression spring 15 and the telescopic rod 17 to move forward, and then the second sliding ring 16 will also move with the compression spring 15 and the telescopic rod 17, and then the second sliding ring 16 will contact the back of the first pressure sensor 13, and then the first sliding ring 14 continues to resist and press, and then after the compression spring 15 is compressed, the compression state of the compression spring 15 is limited by the telescopic rod 17, and the overall limiting effect is good. Then, when the first pressure sensor 13 feels the pressure, it proves that there are more people standing on the surface of the standing board 4. Then, the first pressure sensor 13 sends a signal to the bidirectional motor 19, and then the bidirectional motor 19 drives the winding roller 20 to rotate, and then the winding roller 20 can drive the winding rope 21 rotates, and then the winding rope 21 is wound around the surface of the winding roller 20, so that the winding roller 20 can wind up the winding rope 21, and then the winding rope 21 is limited and conveyed on the surface of the limiting shaft 24, at this time the rising ring 25 rises, and the contact block 26 also rises, when the second pressure sensor on the top surface of the contact block 26 contacts the lower end surface of the stabilizing frame 23, the bidirectional motor 19 stops moving, and at the same time the second pressure sensor on the top surface of the contact block 26 sends an electrical signal to the alarm body 38, so that the alarm body 38 can sound an alarm, which can remind people not to enter the surface of the standing board 4, and when the bidirectional motor 19 rotates, the bidirectional motor 19 will also drive the first bevel gear column 27 to rotate, and then the first bevel gear column 2 7 is meshed with the second bevel gear column 28, so that the second bevel gear column 28 will also rotate, and the third bevel gear column 30 is driven to rotate by the second bevel gear column 28, and then the rotation stability of the second bevel gear column 28 and the third bevel gear column 30 can be enhanced by the limiting plate 29, and at the same time, the third bevel gear column 30 is also meshed with the fourth bevel gear column 31, so that the fourth bevel gear column 31 will also rotate, and then the fourth bevel gear column 31 will drive the rotating gear 32 to rotate, so that when the rotating gear 32 rotates, the rack plate 33 will move forward, and the rack plate 33 will drive the moving plate 34 to move forward, and then the moving plate 34 will drive the rubber ring 35 and the impact ball 36 to impact the back of the impact bar 37, so that the impact ball 36 will make a sound when it hits the impact bar 37,Therefore, these sounds can remind people to a greater extent, thus solving the problem that warning can only be given after overloading in the past, and can also avoid the situation where most people get off the elevator. The above is all the working principles of the present invention.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. An elevator load monitoring and early warning device, comprising an elevator body (1), a car body (2) being arranged on the upper surface of the elevator body (1), a top plate (3) being installed on the right side surface of the car body (2), and a standing plate (4) being installed on the top surface of the elevator body (1), characterized in that: A weighing module (5) is installed inside the elevator body (1), the weighing module (5) is in contact with the lower surface of the standing plate (4), and a support frame (6) is arranged on the outer surface of the weighing module (5), and the support frame (6) is arranged in four groups, and the four groups of the support frames (6) are evenly installed on the outer surface of the weighing module (5); An electric push rod (7) is mounted on the inner wall of an elevator body (1); a detection cylinder (8) is mounted inside the elevator body (1); a sliding groove (9) is provided on the right side surface of the detection cylinder (8); a sliding block (11) is slidably mounted inside the sliding groove (9); a stabilizing block (10) is mounted on the top surface of the sliding block (11); a resistance ring (12) is fixedly connected to the left side surface of the sliding block (11); a first pressure sensor (13) is mounted on the inner side wall of the detection cylinder (8); a first sliding ring (14) is arranged inside the detection cylinder (8); a compression spring (15) is mounted on the front surface of the first sliding ring (14).

2. The load monitoring and early warning device for an elevator according to claim 1, characterized in that: One end of the compression spring (15) away from the first sliding ring (14) is fixedly connected to a second sliding ring (16); a telescopic rod (17) is arranged on the back of the second sliding ring (16); two groups of the telescopic rod (17) are arranged; the second sliding ring (16), the first sliding ring (14), the first pressure sensor (13) and the detection cylinder (8) are mutually adapted.

3. The load monitoring and early warning device for an elevator according to claim 1, characterized in that: A support seat (18) is installed on the inner bottom wall of the standing board (4), and a bidirectional motor (19) is installed on the top surface of the support seat (18).

4. The load monitoring and early warning device for an elevator according to claim 3, characterized in that: A winding roller (20) is installed on the front surface of the bidirectional motor (19), and a winding rope (21) is installed on the outer surface of the winding roller (20).

5. The load monitoring and early warning device for an elevator according to claim 1, characterized in that: A support block (22) is installed inside the standing board (4), a stabilizing frame (23) is installed on the top surface of the support block (22), a limiting shaft (24) is installed on the inner side wall of the stabilizing frame (23), and the outer surface of the limiting shaft (24) contacts the outer surface of the winding rope (21).

6. The load monitoring and early warning device for an elevator according to claim 4, characterized in that: A rising ring (25) is installed at the lower end of the winding rope (21), a resistance block (26) is installed on the top surface of the rising ring (25), and a second pressure sensor is provided on the top surface of the resistance block (26).

7. The elevator load monitoring and early warning device according to claim 3 is characterized in that: A first bevel gear column (27) is installed on the back of the bidirectional motor (19), a second bevel gear column (28) is meshingly connected to the back of the first bevel gear column (27), and a limit plate (29) is installed on the right side surface of the second bevel gear column (28).

8. The load monitoring and early warning device for an elevator according to claim 7, characterized in that: A third bevel tooth column (30) is fixedly connected to the left side of the second bevel tooth column (28); a fourth bevel tooth column (31) is meshedly connected to the front surface of the third bevel tooth column (30); a rotating gear (32) is mounted at the lower end of the fourth bevel tooth column (31); and a rack plate (33) is meshedly connected to the left side surface of the rotating gear (32).

9. The elevator load monitoring and early warning device according to claim 8, characterized in that: A moving plate (34) is installed on the front surface of the rack plate (33), a rubber ring (35) is installed on the front surface of the moving plate (34), and an impact ball (36) is installed on the front surface of the rubber ring (35).

10. The load monitoring and early warning device for an elevator according to claim 1, characterized in that: An impact bar (37) is installed inside the standing board (4), and the back side of the impact bar (37) is in contact with the impact ball (36). An alarm body (38) is installed at the middle end of the standing board (4), and the alarm body (38) is electrically connected to the second pressure sensor.

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