Elevator safety control device

Abstract

The utility model relates to the technical field of elevators, in particular to an elevator safety control device which comprises an installation frame, a box body installed in the installation frame in a sliding mode and an elevator operation controller, and further comprises a main supporting plate and an auxiliary supporting plate which are fixedly installed on the top side of the installation frame, and a motor is fixedly installed on the side, away from the auxiliary supporting plate, of the main supporting plate. The output end of the motor movably penetrates through the main supporting plate and is fixedly connected with a rotating shaft, the rotating shaft and the box body are jointly provided with a traction driving mechanism, the end, away from the motor, of the rotating shaft movably penetrates through the auxiliary supporting plate and is fixedly connected with a brake pad, and a main gear is fixedly installed on the outer side of the end, close to the brake pad, of the rotating shaft. Through the motor, the rotating shaft and the rotating speed velocimeter, the running safety of the box body is improved, and the situation that when the speed of an elevator is monitored through a grating ruler, the speed measurement is inaccurate due to the fact that the variable gap between the magnetic grating ruler and the magnetic head is enlarged due to large magnetic resistance in the air is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to an elevator safety control device. Background Art

[0002] During the operation of the elevator, the actual operating speed of the elevator needs to be monitored for safety reasons. When the car speed exceeds the preset speed, the speed is limited to ensure safety and riding experience. In order to ensure that the car can be stopped in time, the speed monitoring system needs to accurately measure the elevator speed. Among the current speed measurement tools, structures such as magnetic scales are usually used to measure the speed of the elevator car.

[0003] However, the magnetic scale will become loose or even break after long-term use, and cannot guarantee the accurate measurement of the elevator car speed. In addition, the installation mechanism of the magnetic scale is prone to sagging, which affects the measurement accuracy of the magnetic scale and creates a safety hazard for the elevator. In the prior art, the verticality of the scale body is maintained by a tensioner, thereby improving the reading accuracy of the scale mechanism and ensuring accurate speed monitoring. When the tensioner falls to the ground after long-term use, causing the scale body to loosen, or the scale body breaks, affecting the speed monitoring result, it can be handled by changing the position of the induction switch to trigger subsequent alarms or stop actions. However, when the speed of the elevator is monitored only by the scale, the variable gap between the magnetic scale and the magnetic head becomes larger due to the large magnetic resistance in the air, resulting in inaccurate speed measurement. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the utility model provides an elevator safety control device, which can effectively solve the problem that when the prior art relies on a scale to monitor the speed of the elevator, the speed measurement is inaccurate and the safety of the elevator is reduced due to the influence of magnetic resistance in the air.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The utility model provides an elevator safety control device, comprising an installation frame, a box body slidably installed in the installation frame and an elevator operation controller, further comprising a main support plate and a slave support plate fixedly installed on the top side of the installation frame, the main support plate being fixedly installed on a side away from the slave support plate, the output end of the motor movably passes through the main support plate and is fixedly connected to a rotating shaft, the rotating shaft and the box body are jointly provided with a traction drive mechanism, one end of the rotating shaft away from the motor movably passes through the slave support plate and is fixedly connected to a brake pad, the outer side of the end of the rotating shaft close to the brake pad is fixedly installed with a main gear, the connecting shaft is rotatably installed on the slave support plate, the end of the connecting shaft away from the slave support plate is fixedly installed with a slave gear meshing with the main gear, the top side of the installation frame is fixedly installed with a fixing plate, the top side of the fixing plate is fixedly installed with a speed meter, the speed meter corresponds to the slave gear, the end of the speed meter close to the brake pad is fixedly installed with a cylinder, and the telescopic end of the cylinder is fixedly installed with a locking plate.

[0007] According to the above-mentioned elevator safety control device, the elevator operation controller is electrically connected to the speed meter and the cylinder respectively.

[0008] According to the above-mentioned elevator safety control device, the traction drive mechanism includes two fixed rings fixedly mounted on the inner side wall of the mounting frame, a connecting ring corresponding to each fixed ring is fixedly mounted on the top side of the box body, a traction sheave corresponding to each connecting ring is fixedly mounted on the outer side of the rotating shaft, a steel cable is fixedly mounted on the fixed ring, and the other end of the steel cable passes through the connecting ring and is fixedly wound around the outer side of the traction sheave.

[0009] According to the above-mentioned elevator safety control device, two limiting columns are fixedly installed on one side of the locking plate close to the brake pad, and an anti-skid pad is fixedly installed on the inner side wall of the locking plate, and the anti-skid pad is made of silicone.

[0010] According to the above-mentioned elevator safety control device, a negative pressure plate is fixedly installed on the top side of the installation frame, the negative pressure plate is placed between the main gear and the brake pad, and the side of the negative pressure plate close to the brake pad is in contact with the brake pad.

[0011] According to the above-mentioned elevator safety control device, a plurality of connecting rods are fixedly installed on the side of the negative pressure plate away from the brake pad, and one end of the plurality of connecting rods away from the negative pressure plate is fixedly connected to the support plate.

[0012] Compared with the known prior art, the technical solution provided by the utility model has the following beneficial effects:

[0013] The utility model drives the traction wheel to rotate through the steel cable to make the box body move up and down, and at the same time, the rotation speed meter monitors the rotation speed of the slave gear. When the rotation speed of the slave gear is abnormal, it converts it into an electrical signal and transmits it to the elevator operation controller. The elevator operation controller then outputs a control signal to the cylinder, so that the cylinder drives the locking plate to move toward the brake pad, and the locking plate locks the brake pad so that the brake pad no longer rotates, and then the box body no longer moves through the rotating shaft and the traction wheel, thereby improving the safety of the box body operation and avoiding the situation that when the elevator relies on the scale to monitor the speed, the variable gap between the magnetic scale and the magnetic head becomes larger due to the large magnetic resistance in the air, resulting in inaccurate speed measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the main gear, brake pad and locking plate of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the box body, steel cable and traction wheel of the utility model;

[0018] Figure 4 For this utility model Figure 1 A is an enlarged structural diagram of FIG.

[0019] Figure numerals: 1. mounting frame; 2. housing; 3. main support plate; 31. slave support plate; 4. motor; 5. rotating shaft; 6. traction wheel; 7. fixing ring; 8. connecting ring; 9. steel cable; 10. main gear; 11. connecting shaft; 12. slave gear; 13. brake pad; 14. fixing plate; 15. speed meter; 16. cylinder; 17. locking plate; 18. limiting column; 19. anti-slip pad; 20. negative pressure plate; 21. connecting rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model is further described below in conjunction with embodiments.

[0022] Example: Refer to Figures 1 to 4, an elevator safety control device comprises an installation frame 1, a box body 2 slidably installed inside the installation frame 1 and an elevator operation controller, and also comprises a main support plate 3 and a slave support plate 31 fixedly installed on the top side of the installation frame 1, a motor 4 is fixedly installed on the side of the main support plate 3 away from the slave support plate 31, an output end of the motor 4 movably penetrates the main support plate 3 and is fixedly connected with a rotating shaft 5, a traction drive mechanism is jointly arranged on the rotating shaft 5 and the box body 2, an end of the rotating shaft 5 away from the motor 4 movably penetrates the slave support plate 31 and is fixedly connected with a brake pad 13, and a main support plate 3 is fixedly installed on the outer side of the end of the rotating shaft 5 close to the brake pad 13 The gear 10 is rotatably mounted on the slave support plate 31 with a connecting shaft 11, and a slave gear 12 meshing with the main gear 10 is fixedly mounted on one end of the connecting shaft 11 away from the slave support plate 31, and a fixing plate 14 is fixedly mounted on the top side of the mounting frame 1, and a speed meter 15 is fixedly mounted on the top side of the fixing plate 14, and the speed meter 15 corresponds to the slave gear 12, and a cylinder 16 is fixedly mounted on one end of the speed meter 15 close to the brake pad 13, and a locking plate 17 is fixedly mounted on the telescopic end of the cylinder 16, and the elevator operation controller is electrically connected to the speed meter 15 and the cylinder 16 respectively, and the locking plate 17 is close to the brake pad 13. Two limit columns 18 are fixedly installed on one side of the brake pad 13, and an anti-skid pad 19 is fixedly installed on the inner wall of the locking plate 17. The anti-skid pad 19 is made of silicone material. A negative pressure plate 20 is fixedly installed on the top side of the mounting frame 1. A plurality of connecting rods 21 are fixedly installed on the side of the negative pressure plate 20 away from the brake pad 13. One end of the plurality of connecting rods 21 away from the negative pressure plate 20 is fixedly connected to the slave support plate 31. The negative pressure plate 20 is placed between the main gear 10 and the brake pad 13, and the side of the negative pressure plate 20 close to the brake pad 13 is in contact with the brake pad 13; the speed meter 15 is a device for testing and measuring the rotation of the equipment The electronic instrument for measuring the rotation speed of the rotating object senses the speed of the rotating object through the sensor and converts it into an electrical signal. When the motor 4 drives the traction drive mechanism to move the box 2 up and down, the rotating shaft 5 drives the slave gear 12 meshing with the main gear 10 to rotate through the main gear 10, and the speed meter 15 monitors the speed of the slave gear 12. When the speed meter 15 detects that the speed of the slave gear 12 is abnormal, it converts it into an electrical signal and transmits it to the elevator operation controller, and then the elevator operation controller outputs a control signal to the cylinder 16, so that the cylinder 16 drives the locking plate 17 to move toward the brake pad 13.

[0023] The brake pad 13 is locked by the locking plate 17 so that the brake pad 13 no longer rotates, and the housing 2 no longer moves through the rotating shaft 5 and the traction drive mechanism. The anti-skid pad 19 made of silicone increases the friction between the locking plate 17 and the brake pad 13, further strengthening the locking of the brake pad 13.

[0024] Specifically, the traction drive mechanism includes two fixing rings 7 fixedly mounted on the inner side wall of the mounting frame 1, a connecting ring 8 corresponding to each fixing ring 7 is fixedly mounted on the top side of the box body 2, a traction sheave 6 corresponding to each connecting ring 8 is fixedly mounted on the outer side of the rotating shaft 5, a steel cable 9 is fixedly mounted on the fixing ring 7, and the other end of the steel cable 9 passes through the connecting ring 8 and is fixedly wound around the outer side of the traction sheave 6; when in use, the motor 4 drives the rotating shaft 5 to rotate and drives the traction sheave 6 to rotate, and when the traction sheave 6 rotates, the steel cable 9 is wound or unwound to move the box body 2 up and down.

[0025] The working principle of the utility model is as follows:

[0026] When in use, the motor 4 drives the rotating shaft 5 to rotate, which drives the traction wheel 6 to rotate. When the traction wheel 6 rotates, the steel cable 9 is reeled in or unreeled to make the box body 2 move up and down. The rotating shaft 5 drives the slave gear 12 meshing with the main gear 10 to rotate through the main gear 10, and the speed meter 15 monitors the speed of the slave gear 12. When the speed meter 15 detects that the speed of the slave gear 12 is abnormal, it converts it into an electrical signal and transmits it to the elevator operation controller, and the elevator operation controller outputs a control signal to the cylinder 16, so that the cylinder 16 drives the locking plate 17 to move toward the brake pad 13, and the locking plate 17 locks the brake pad 13, so that the brake pad 13 no longer rotates, and then the box body 2 no longer moves through the rotating shaft 5 and the traction wheel 6, and the anti-skid pad 19 made of silicone material increases the friction between the locking plate 17 and the brake pad 13, further strengthening the locking of the brake pad 13.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An elevator safety control device, comprising an installation frame (1), a box (2) slidably installed inside the installation frame (1), and an elevator operation controller, characterized in that: It also comprises a main support plate (3) and a slave support plate (31) fixedly mounted on the top side of the mounting frame (1); a motor (4) is fixedly mounted on a side of the main support plate (3) away from the slave support plate (31); an output end of the motor (4) movably penetrates the main support plate (3) and is fixedly connected to a rotating shaft (5); a traction drive mechanism is provided on the rotating shaft (5) and the housing (2); an end of the rotating shaft (5) away from the motor (4) movably penetrates the slave support plate (31) and is fixedly connected to a brake pad (13); a main gear (10) is fixedly mounted on the outer side of an end of the rotating shaft (5) close to the brake pad (13); A connecting shaft (11) is rotatably mounted on the slave support plate (31); a slave gear (12) meshingly connected to the main gear (10) is fixedly mounted on one end of the connecting shaft (11) away from the slave support plate (31); a fixing plate (14) is fixedly mounted on the top side of the mounting frame (1); a rotation speed meter (15) is fixedly mounted on the top side of the fixing plate (14); the rotation speed meter (15) corresponds to the slave gear (12); a cylinder (16) is fixedly mounted on one end of the rotation speed meter (15) close to the brake pad (13); a locking plate (17) is fixedly mounted on the telescopic end of the cylinder (16).

2. An elevator safety control device according to claim 1, characterized in that: The elevator operation controller is electrically connected to the rotation speed meter (15) and the cylinder (16) respectively.

3. An elevator safety control device according to claim 1, characterized in that: The traction drive mechanism comprises two fixing rings (7) fixedly mounted on the inner side wall of the mounting frame (1); a connecting ring (8) corresponding to each fixing ring (7) is fixedly mounted on the top side of the housing (2); a traction sheave (6) corresponding to each connecting ring (8) is fixedly mounted on the outer side of the rotating shaft (5); a steel cable (9) is fixedly mounted on the fixing ring (7); the other end of the steel cable (9) passes through the connecting ring (8) and is fixedly wound around the outer side of the traction sheave (6).

4. An elevator safety control device according to claim 1, characterized in that: Two limiting columns (18) are fixedly mounted on one side of the locking plate (17) close to the brake pad (13), and an anti-skid pad (19) is fixedly mounted on the inner side wall of the locking plate (17), wherein the anti-skid pad (19) is made of silica gel.

5. An elevator safety control device according to claim 1, characterized in that: A negative pressure plate (20) is fixedly mounted on the top side of the mounting frame (1), the negative pressure plate (20) is placed between the main gear (10) and the brake pad (13), and a side of the negative pressure plate (20) close to the brake pad (13) is in contact with the brake pad (13).

6. An elevator safety control device according to claim 5, characterized in that: A plurality of connecting rods (21) are fixedly mounted on one side of the negative pressure plate (20) away from the brake pad (13), and one end of the plurality of connecting rods (21) away from the negative pressure plate (20) is fixedly connected to the support plate (31).

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