Elevator safety system and elevator safety control method

Abstract

The application discloses an elevator safety system and an elevator safety control method. The elevator safety system comprises a grating ruler mechanism, a mounting structure, and a tensioning piece. The grating ruler mechanism comprises a grating ruler body, a reading assembly, and an inductive switch. The grating ruler body has a first end and a second end along the running direction of the elevator. The reading assembly is installed on the elevator car. The inductive switch is installed on the reading assembly. The inductive switch has a first position and a second position. The mounting structure comprises a mounting arm. The mounting arm is connected with the first end of the grating ruler body. The grating ruler body is fixed to the guide rail of the elevator car through the mounting arm. The tensioning piece is fixedly connected with the second end of the grating ruler body. In use, the tensioning piece can keep the grating ruler body vertical, thereby improving the reading accuracy of the grating ruler mechanism. When the tensioning piece falls to the ground after long-term use, the grating ruler body is loosened or the grating ruler body is broken, thereby affecting the speed monitoring result. The position change of the inductive switch can trigger the subsequent alarm or stopping action.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of elevator safety, in particular to an elevator safety system and an elevator safety control method. BACKGROUND

[0002] During the operation of the elevator, the actual running speed of the elevator needs to be monitored for safety considerations, and the speed is limited when the car speed exceeds the preset speed to ensure safety and ride experience. In order to ensure that the car can be speed-limited or stopped in time, the running speed of the elevator needs to be accurately measured by a speed monitoring system. In the current speed measurement tool, a magnetic scale structure is usually used to measure the speed of the elevator car, but the magnetic scale will loosen or even break after long-term use, which cannot guarantee the accurate measurement of the speed of the elevator car. In addition, the installation mechanism of the magnetic scale is prone to sagging, which affects the measurement accuracy of the magnetic scale and causes safety hazards of the elevator.

[0003] Therefore, there is an urgent need to provide an elevator safety system that can accurately monitor the running speed of the elevator and has high safety. SUMMARY

[0004] To solve at least one of the above technical problems, the present application provides an elevator safety system and an elevator safety control method, and the technical solutions adopted are as follows:

[0005] The elevator safety system provided by the present application comprises a scale mechanism, a mounting structure and a tensioning piece. The scale mechanism comprises a scale body, a reading assembly and an inductive switch. The scale body has a first end and a second end along the running direction of the elevator. The reading assembly is installed on the elevator car. The inductive switch is installed on the reading assembly and has a first position and a second position. The mounting structure comprises a mounting arm connected to the first end of the scale body. The scale body is fixed to the elevator car guide rail through the mounting arm. The tensioning piece is fixedly connected to the second end of the scale body. When the elevator car runs, the tensioning piece pulls the scale body downward, the reading assembly moves back and forth along the scale body, and the inductive switch is in the first position. When the scale body breaks, the inductive switch is in the second position.

[0006] In some embodiments of the present application, the reading assembly comprises a sliding seat and two limiting rods. The two limiting rods are arranged in the length direction of the scale body and are spaced apart from each other in the sliding seat. The scale body is arranged between the limiting rods and the sliding seat.

[0007] In some embodiments of the present application, the limiting rod has a first limiting structure and a second limiting structure. The first limiting structure and the second limiting structure are arranged in the width direction of the scale body and are spaced apart from each other. The scale body is arranged between the first limiting structure and the second limiting structure.

[0008] In some embodiments of the present application, the limiting rod is provided with a rolling element, the rolling element is in rolling contact with the ruler body, and the first limiting structure and the second limiting structure are protruded relative to the rolling element.

[0009] In some embodiments of the present application, the ruler mechanism further comprises an adjusting assembly, the adjusting assembly comprises a driving element and a transmission structure, the driving element is installed on the sliding seat, and the transmission structure is fixedly connected with the limiting rod, and the driving element drives the transmission structure to reciprocate along the width direction of the ruler body.

[0010] In some embodiments of the present application, the adjusting assembly further comprises a position detection unit, the position detection unit is installed on the reading assembly, and the position detection unit is electrically connected with the driving element.

[0011] In some embodiments of the present application, the elevator safety system further comprises a limiting assembly, the limiting assembly is installed on the elevator car guide rail, and the limiting assembly comprises a limiting sleeve, and the ruler body can reciprocate along the limiting sleeve.

[0012] In some embodiments of the present application, the limiting assembly further comprises a guide structure and an adjusting block, the guide structure is fixedly installed on the elevator car guide rail, the adjusting block is slidingly installed on the guide structure, and the limiting sleeve is fixedly connected with the adjusting block.

[0013] In some embodiments of the present application, the mounting structure further comprises a first connecting element and a second connecting element, the ruler body is detachably connected with the mounting arm through the first connecting element, and the ruler body is detachably connected with the tensioning element through the second connecting element.

[0014] The present application further provides an elevator safety control method, comprising:

[0015] S10, the ruler mechanism monitors the speed of the running elevator car in real time, and determines whether the measurement result of the ruler mechanism is accurate through the position of the inductive switch;

[0016] S20, the inductive switch is switched from the first position to the second position, the inductive switch feeds back a signal to the control assembly, and the control assembly executes steps S30A, S30B and S30C;

[0017] S30A, the control assembly sends a signal to the signal delay device, when the delay ends, the signal delay device sends a signal to the speed governor electromagnetic valve, and triggers the safety clamp device;

[0018] S30B, the control assembly sends a signal to the host control circuit, the host control circuit sends a signal to the host drive circuit, the host is decelerated and braked, and the host is stopped by the brake.

[0019] The S30C and control components trigger an alarm through the elevator communication system, notifying elevator management personnel to halt rescue efforts.

[0020] The embodiments of the present invention have at least the following beneficial effects: During use, the elevator safety system can maintain the verticality of the scale body through the tensioning member, thereby improving the reading accuracy of the scale mechanism and ensuring accurate speed monitoring. If, after prolonged use, the tensioning member falls to the ground, causing the scale body to loosen, or the scale body breaks, affecting the speed monitoring results, a subsequent alarm or braking action can be triggered by a change in the position of the sensor switch, ensuring the safe operation of the elevator. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Fig. 1 This is a structural diagram of an elevator safety system;

[0023] Fig. 2 This is a schematic diagram of the scale mechanism;

[0024] Fig. 3 This is a schematic diagram showing the adjustment comparison of the scale mechanism;

[0025] Fig. 4 This is a schematic diagram of the limit component.

[0026] Reference numerals: 100, mounting arm; 110, first connecting member; 120, second connecting member; 200, scale mechanism; 210, scale body; 220, reading component; 221, sliding seat; 222, limiting rod; 2221, first limiting structure; 2222, second limiting structure; 223, rolling element; 300, tensioning element; 400, adjusting component; 410, driving element; 420, transmission structure; 430, position detection unit; 500, limiting component; 511, pulley; 512, wire rope; 520, adjusting block; 521, bending pad; 530, limiting sleeve; 600, inductive switch. Detailed Implementation

[0027] The following is combined with Figs. 1 to 4 Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of the present application, it needs to be understood that if the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The features defined as "first", "second" are used to distinguish the feature names, not to have special meanings, and in addition, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0029] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] During the operation of the elevator, the actual running speed of the elevator needs to be monitored for safety considerations, and the speed is limited when the car speed exceeds the preset speed to ensure safety and ride experience. In order to ensure that the car can be timely speed-limited or stopped, the running speed of the elevator needs to be accurately measured by a speed monitoring system. In the current speed measurement tool, a magnetic scale structure is usually used to measure the speed of the elevator car, but the magnetic scale will loosen or even break after long-term use, which cannot guarantee the accurate measurement of the speed of the elevator car. In addition, the installation mechanism of the magnetic scale is prone to sagging, which affects the measurement accuracy of the magnetic scale and causes safety hazards of the elevator.

[0031] Therefore, it is urgent to provide an elevator safety system with high accuracy and safety.

[0032] The present application relates to elevator safety system, including rack mechanism 200, mounting structure, tensioning piece 300, rack mechanism 200 includes rack ruler body 210, reading assembly 220, inductive switch 600, rack ruler body 210 has first end and second end along the elevator running direction, reading assembly 220 is installed in elevator car, inductive switch 600 is installed in reading assembly 220, inductive switch 600 has first position and second position;The mounting structure includes mounting arm 100, the first end of the mounting arm 100 is connected with the first end of the rack ruler body 210, and the rack ruler body 210 is fixed to the elevator car guide rail through the mounting arm 100;The second end of the tensioning piece 300 is fixedly connected with the second end of the rack ruler body 210;Wherein, when the elevator car runs, the tensioning piece 300 pulls down the rack ruler body 210, the reading assembly 220 reciprocatingly moves along the rack ruler body 210, and the inductive switch 600 is located at the first position;When the rack ruler body 210 breaks, the inductive switch 600 is located at the second position.The elevator safety system can keep the verticality of the rack ruler body 210 by the tensioning piece 300 when in use, thereby improving the reading accuracy of the rack mechanism 200 and ensuring the speed monitoring accuracy.When the tensioning piece 300 falls to the ground after long-term use, the rack ruler body 210 is loose, or the rack ruler body 210 is broken to affect the speed monitoring result, the subsequent alarm or stopping action can be triggered by the change of the position of the inductive switch 600, and the running safety of the elevator is ensured.

[0033] In some embodiments, the mounting structure further includes a first connecting piece 110, and the first end of the rack ruler body 210 is connected with the mounting arm 100 through the first connecting piece 110.Specifically, the first connecting piece 110 is fixedly connected with the mounting arm 100.Combined with the drawings, in the embodiment, the first connecting piece 110 is provided in the form of a strip-shaped plate structure, the upper end of which is fixed to the mounting arm 100, and the lower end is connected with the rack ruler body 210.It can be understood that the provision of the first connecting piece 110 helps to define the mounting position of the rack ruler body 210 relative to the mounting arm 100, further enhancing the stability of the rack mechanism 200.In some embodiments, the first connecting piece 110 and the mounting arm 100 are respectively formed and fixedly connected;In some other embodiments, the first connecting piece 110 and the mounting arm 100 are integrally formed.

[0034] Further, the first end of the rack ruler body 210 is detachably connected with the first connecting piece 110.It can be understood that the detachable connection between the rack ruler body 210 and the first connecting piece 110 facilitates the replacement and maintenance of the rack ruler body 210.In the embodiment, the rack ruler body 210 and the first connecting piece 110 are mutually buckled through buckle connection, and in other embodiments, the rack ruler body 210 and the first connecting piece 110 can also be detachably connected through thread connection or plug-in connection.

[0035] In some embodiments, the mounting structure further includes a second connector 120, through which the second end of the scale body 210 is connected to the tensioning member 300. Specifically, the second connector 120 is fixedly connected to the tensioning member 300. Referring to the accompanying drawings, in this embodiment, the second connector 120 is configured as a strip-shaped plate structure. The upper end of the strip-shaped plate is connected to the second end of the scale body 210, and the lower end of the strip-shaped plate is fixedly connected to the tensioning member 300. By providing the second connector 120, the relative fixation between the second end of the scale body 210 and the tensioning member 300 can be further ensured, enhancing the stability of the scale mechanism 200. In some embodiments, the second connector 120 and the tensioning member 300 are integrally formed; in other embodiments, the second connector 120 and the tensioning member 300 are detachably connected to facilitate the replacement of the tensioning member 300.

[0036] Furthermore, the second end of the scale body 210 is detachably connected to the second connector 120. It is understood that the detachable connection between the scale body 210 and the second connector 120 facilitates the replacement and maintenance of the scale body 210. In this embodiment, the scale body 210 and the second connector 120 are fastened together by a snap-fit ​​connection. In other embodiments, the scale body 210 and the second connector 120 can also be detachably connected by a threaded connection or a plug-in connection.

[0037] In some embodiments, the elevator safety system further includes a limiting component 500, which is fixedly connected to the elevator car guide rail, and a second connecting member 120 is connected to the limiting component 500. It is understood that the limiting component 500 enables relative fixation between the second connecting member 120 and the elevator car guide rail, preventing the second connecting member 120 from shaking during elevator car operation, thereby stabilizing the position of the scale body 210 and ensuring the reading accuracy of the scale mechanism 200.

[0038] Furthermore, the limiting component 500 includes a limiting sleeve 530. Referring to the accompanying drawings, the limiting sleeve 530 is fitted over the second connecting member 120, allowing the second connecting member 120 to reciprocate within the limiting sleeve 530. It can be understood that the limiting sleeve 530 enables the second connecting member 120 to move vertically relative to the elevator car guide rail, accommodating deformation of the scale body 210 along its length, while simultaneously limiting lateral swaying of the second connecting member 120 relative to the elevator car guide rail. Specifically, the limiting sleeve 530 is relatively fixedly installed on the elevator car guide rail.

[0039] In some embodiments, the limiting component 500 further includes a guide structure and an adjusting block 520. Specifically, the guide structure is fixedly installed on the elevator car guide rail, the adjusting block 520 is slidably installed on the guide structure, and the limiting sleeve 530 is fixedly connected to the adjusting block 520. Referring to the accompanying drawings, the limiting sleeve 530 is installed on the adjusting block 520, and the adjusting block 520 slides along the guide structure to achieve positional changes of the limiting sleeve 530 relative to the elevator car guide rail. This allows the limiting sleeve 530 to be moved by the adjusting block 520 to adapt to positional changes in the scale body 210 when the position of the mounting arm 100 changes, adjusting the verticality of the scale body 210 to ensure reading accuracy and guarantee elevator operation safety.

[0040] Specifically, referring to the accompanying drawings, in this embodiment, the guide structure includes two pulleys 511 and a steel wire rope 512 wound around the two pulleys 511. The adjusting block 520 is fixedly connected to the steel wire rope 512. When the position of the mounting arm 100 changes, the scale body 210 and the tensioning member 300 are driven by their own weight to move, thereby pushing the limiting sleeve 530 and the adjusting block 520 to move the steel wire rope 512 along the pulleys 511 to maintain the verticality of the scale body 210. It can be understood that the moving direction of the steel wire rope 512 is inclined to the elevator car guide rail to facilitate the movement of the limiting sleeve 530. Adjusting the relative position between the two pulleys 511 can adjust the tension of the steel wire rope 512, thereby adjusting the moving resistance of the steel wire rope 512. In other embodiments, the guide structure is set as a ball screw pair, a threaded screw pair, a gear and rack structure, a synchronous belt, or other structures that can limit the moving direction of the limiting sleeve 530 and provide moving resistance.

[0041] In some embodiments, the limiting component 500 further includes a bending pad 521. Referring to the accompanying drawings, the bending pad 521 has a first mounting portion, a second mounting portion, and a bending portion. The first mounting portion is fixedly connected to the adjusting block 520, and the second mounting portion is relatively fixedly connected to the limiting sleeve 530. The first mounting portion and the second mounting portion are connected through the bending portion. It can be understood that the connection between the adjusting block 520 and the limiting sleeve 530 via the bending pad 521 increases the distance between the limiting sleeve 530 and the adjusting block 520, preventing interference between the second connecting member 120 and the limiting component 500 when the second connecting member 120 moves up and down, thus ensuring the accuracy of the scale mechanism 200.

[0042] Furthermore, the bending pad 521 and the limiting sleeve 530 are rotatably connected. It is understood that when the limiting sleeve 530 moves, a slight angular deformation will occur between the limiting sleeve 530 and the wire rope 512 due to the sag of the wire rope 512. Specifically, the bending pad 521 and the limiting sleeve 530 can be configured as a hinged or bolted connection to allow relative rotation between them.

[0043] In some embodiments, the limiting component 500 further includes a threaded fastener, and the first mounting portion is connected to the adjusting block 520 via the threaded fastener. Referring to the accompanying drawings, in this embodiment, the threaded fastener is a U-bolt, and the wire rope 512 is fixed between the U-bolt and the adjusting block 520. It can be understood that adjusting the U-bolt can adjust the tightness between the wire rope 512 and the adjusting block 520.

[0044] Specifically, the scale body 210 has a plurality of first and second marker information spaced at intervals along its length. The first and second marker information are arranged alternately. The reading component 220 includes a reading head capable of recognizing the first and second marker information. When the reading component 220 slides along the scale body 210, the reading head can recognize the first and second marker information to measure the elevator car's running speed and real-time position. In this embodiment, the scale mechanism 200 is a magnetic scale mechanism 200. The scale body 210 is made of magnetic material. The first and second marker information are first and second magnetic poles with opposite magnetic properties. The reading head moves along the scale body 210 and detects the first and second magnetic poles, then feeds back a signal to obtain the actual running speed of the elevator car. It is understood that in other embodiments, the scale mechanism 200 is set as an optical scale mechanism 200 or a ball scale mechanism 200. The change in the reading form of the scale mechanism 200 does not affect the implementation of this technical solution.

[0045] Referring to the accompanying drawings, in this embodiment, two limiting rods 222 are provided. The two limiting rods 222 are respectively disposed at both ends of the sliding seat 221 to further limit the relative positional relationship between the reading component 220 and the scale body 210, ensuring the reading accuracy of the scale mechanism 200. It is understood that the number and installation position of the limiting rods 222 can be adjusted as needed according to changes in the specifications of the sliding seat 221 in the reading component 220.

[0046] In some embodiments, the limiting rod 222 has a first limiting structure 2221 and a second limiting structure 2222, which are spaced apart along the width direction of the ruler body 210. The distance between the first limiting structure 2221 and the second limiting structure 2222 is greater than the width of the ruler body 210. Referring to the accompanying drawings, it can be understood that when the ruler body 210 moves along its width, the first limiting structure 2221 or the second limiting structure 2222 can abut against the ruler body 210 to prevent further displacement. It can also be understood that in other embodiments, the first limiting structure 2221 and the second limiting structure 2222 are directly disposed on the sliding seat 221 to limit the movement of the ruler body 210 relative to the sliding seat 221.

[0047] Furthermore, the limiting rod 222 is equipped with a rolling element 223, which rolls in contact with the ruler body 210 to reduce the friction between the ruler body 210 and the limiting rod 222. It can be understood that in some embodiments, the rolling element 223 is configured as a bearing, with positioning structures at both ends to prevent the bearing from moving axially along the limiting rod 222. When the ruler body 210 moves up and down, the bearing rotates relative to the limiting rod 222. In other embodiments, the rolling element 223 is configured as a cylindrical structure integral with the limiting rod 222. When the ruler body 210 moves up and down, the cylindrical structure drives the limiting rod 222 to rotate relative to the sliding seat 221. Referring to the accompanying drawings, in this embodiment, the first limiting structure 2221 and the second limiting structure 2222 are configured as boss structures protruding relative to the rolling element 223, with the two boss structures respectively located at both ends of the rolling element 223.

[0048] In some embodiments, the scale mechanism 200 further includes an adjustment component 400, which includes a drive member 410 and a transmission structure 420. The drive member 410 is mounted on the sliding seat 221, and the transmission structure 420 is fixedly connected to the limiting rod 222. The drive member 410 can drive the transmission structure 420 to reciprocate along the width direction of the scale body 210. It is understood that during actual use, the mounting arm 100 of the scale mechanism 200 may sag and tilt due to its own weight and the gravity of the scale mechanism 200 after prolonged operation. At this time, although the scale body 210 remains vertical, it has moved along the width direction relative to the sliding seat 221. To ensure the reading accuracy of the scale mechanism 200, the drive member 410 drives the transmission structure 420 to move along the width direction, thereby driving the limiting rod 222 to push the scale body 210 and adjust the relative position between the scale body 210 and the reading component 220.

[0049] Furthermore, the driving component 410 is configured as a drive motor, and a gear is installed at the output end of the drive motor. The transmission structure 420 is configured as a rack and pinion structure meshing with the gear. Referring to the accompanying drawings, the drive motor is mounted on the upper end of the reading component 220. The output shaft of the drive motor drives the gear to rotate, thereby causing the rack and pinion structure and the two limiting rods 222 to move along the width direction, pushing the scale body 210. It is understood that in other embodiments, the driving component 410 and the transmission structure 420 are configured as a ball screw pair, worm gear, or similar mechanism to drive the limiting rods 222 to move along the width direction.

[0050] Furthermore, the adjustment component 400 also includes a position detection unit 430, which is mounted on the reading component 220. Specifically, the position detection unit 430 is used to detect the movement of the scale body 210 relative to the reading component 220, and is electrically connected to the drive component 410. It can be understood that in some embodiments, the position detection unit 430 can monitor whether the scale body 210 moves relative to the reading component 220 in the width direction; in other embodiments, the position detection unit 430 can further measure the displacement of the scale body 210 and achieve self-adjustment in conjunction with the drive component 410.

[0051] In some embodiments, the position detection unit 430 includes an infrared sensor mounted on the side of the sliding base 221 opposite to the scale body 210. It is understood that when the scale body 210 moves along its width, it blocks the infrared sensor, thereby enabling the infrared sensor to determine the change in the relative position between the scale body 210 and the sliding base 221. Referring to the accompanying drawings, multiple infrared sensors are provided, symmetrically arranged in two rows on both sides of the scale body 210 to monitor its displacement.

[0052] In other embodiments, the position detection unit 430 includes pressure sensors, and at least two pressure sensors are provided. The two pressure sensors are respectively installed on the side of the first limiting structure 2221 near the grid ruler body 210 and the side of the second limiting structure 2222 near the grid ruler body 210.

[0053] In some embodiments, two inductive switches 600 are provided, respectively mounted at both ends of the sliding base 221 along the length of the scale body 210. Providing inductive switches 600 at the upper and lower ends of the sliding base 221 enhances the sensitivity of the scale mechanism 200 to tape breakage detection, allowing for timely triggering of the inductive switches 600 for subsequent stopping operations. Referring to the accompanying drawings, the inductive switch 600 includes a pressure rod rotatably mounted on the sliding base 221 to switch between a first position and a second position. It is understood that a torsion spring is provided between the pressure rod and the sliding base 221 to ensure timely position switching. Specifically, the inductive switch 600 is configured as a relay switch or other contact switch, transmitting signals through position changes.

[0054] It is understood that the scale mechanism 200 also includes a control component. The control component is electrically connected to the reading component 220 to receive signals fed back from the reading head and process them to obtain the actual operating speed of the elevator car. The control component is also electrically connected to the adjustment component 400 to control the drive component 410 to drive the transmission structure 420 to move, and adjusts the position of the scale body 210 through the first limit structure 2221 and the second limit structure 2222. In some embodiments, the control component independently controls the reading component 220 and the adjustment component 400, and activates the adjustment component 400 to reset the scale mechanism 200 based on the feedback from the reading component 220; in other embodiments, the control component is electrically connected to the elevator operation control system, and adjusts the scale mechanism 200 according to parameters such as the elevator's operating status.

[0055] Other components and operations of the elevator safety system are already described in relevant technologies for those skilled in the art, and will not be described in detail here.

[0056] The following describes in detail the invention using the process of adjusting the position of the scale body 210 relative to the sliding seat 221 by the adjusting component 400 as an example. It should be noted that the following description is merely illustrative and not a specific limitation of the invention.

[0057] When the mounting arm 100 tilts downwards, the scale body 210 remains vertical under the tensioning member 300, but it undergoes horizontal displacement relative to its initial position. The scale body 210 blocks the infrared sensor on the offset side, cutting off the infrared light, thus allowing the control component to determine the direction of movement of the scale body 210. The control component sends a signal to start the drive motor, which drives the rack structure to move the limit rod 222 in the opposite direction of movement until the scale body 210 stops blocking the infrared sensor, thereby completing the position adjustment of the scale body 210 relative to the sliding seat 221 and ensuring the measurement accuracy of the scale mechanism 200.

[0058] This invention also relates to an elevator safety control method, comprising:

[0059] S10. The scale mechanism monitors the speed of the elevator car in real time and determines the accuracy of the scale mechanism's measurement results by checking the position of the sensor switch.

[0060] S20, the sensor switch changes from the first position to the second position, the sensor switch feeds back a signal to the control component, and the control component executes steps S30A, S30B and S30C;

[0061] S30A, the control component sends a signal to the signal delay unit. When the delay ends, the signal delay unit sends a signal to the speed limiter solenoid valve, triggering the safety clamp device.

[0062] S30B, the control component sends a signal to the host control circuit, the host control circuit sends a signal to the host drive circuit, the host decelerates and brakes, and the host stops the holding brake.

[0063] The S30C and control components trigger an alarm through the elevator communication system, notifying elevator management personnel to halt rescue efforts.

[0064] It is understood that the above method does not specify the order in which steps S30A, S30B, and S30C are executed.

[0065] In the description of this specification, the use of terms such as "an embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An elevator safety system, characterized in that, include: A scale mechanism (200) includes a scale body (210), a reading component (220), a sensor switch (600), and an adjustment component (400). The scale body (210) has a first end and a second end along the elevator running direction. The reading component (220) is installed in the elevator car and includes a sliding seat (221) and two limiting rods (222). The two limiting rods (222) extend along the scale body. The ruler body (210) is spaced apart along the length direction of the sliding seat (221). The ruler body (210) passes between the limiting rod (222) and the sliding seat (221). The limiting rod (222) has a first limiting structure (2221) and a second limiting structure (2222). The first limiting structure (2221) and the second limiting structure (2222) are spaced apart along the width direction of the ruler body (210). The scale body (210) is disposed between the first limiting structure (2221) and the second limiting structure (2222). The limiting rod (222) is equipped with a rolling element (223). The rolling element (223) rolls in contact with the scale body (210). The first limiting structure (2221) and the second limiting structure (2222) protrude relative to the rolling element (223). The inductive switch (600) is installed on the reading component (220). The inductive switch (600) has a first position and a second position. The adjusting component (400) includes a driving element (410) and a transmission structure (420). The driving element (410) is installed on the sliding seat (221). The transmission structure (420) is fixedly connected to the limiting rod (222). The driving element (410) drives the transmission structure (420) to reciprocate along the width direction of the scale body (210). The mounting structure includes a mounting arm (100), which is connected to the first end of the grid ruler body (210). The grid ruler body (210) is fixed to the elevator car guide rail by the mounting arm (100). Tensioner (300), wherein the tensioner (300) is fixedly connected to the second end of the scale body (210); When the elevator car is running, the tensioning member (300) pulls the grid ruler body (210) downward, the reading component (220) moves back and forth along the grid ruler body (210), and the induction switch (600) is in the first position; when the grid ruler body (210) breaks, the induction switch (600) is in the second position.

2. The elevator safety system according to claim 1, characterized in that: The adjustment component (400) further includes a position detection unit (430), which is mounted on the reading component (220) and is electrically connected to the drive component (410).

3. The elevator safety system according to claim 1, characterized in that: The elevator safety system also includes a limit component (500), which is installed on the elevator car guide rail. The limit component (500) includes a limit sleeve (530), and the grid ruler body (210) can reciprocate along the limit sleeve (530).

4. The elevator safety system according to claim 3, characterized in that: The limiting component (500) further includes a guide structure and an adjusting block (520). The guide structure is fixedly installed on the elevator car guide rail, the adjusting block (520) is slidably installed on the guide structure, and the limiting sleeve (530) is fixedly connected to the adjusting block (520).

5. The elevator safety system according to any one of claims 1 to 4, characterized in that: The mounting structure further includes a first connector (110) and a second connector (120). The scale body (210) is detachably connected to the mounting arm (100) via the first connector (110), and the scale body (210) is detachably connected to the tensioning member (300) via the second connector (120).

6. An elevator safety control method, characterized in that, The elevator safety control method, applied to the elevator safety system according to any one of claims 1 to 5, comprises: S10. The scale mechanism monitors the speed of the elevator car in real time and determines the accuracy of the scale mechanism's measurement results by checking the position of the sensor switch. S20, the sensor switch changes from the first position to the second position, the sensor switch feeds back a signal to the control component, and the control component executes steps S30A, S30B and S30C; S30A, the control component sends a signal to the signal delay unit. When the delay ends, the signal delay unit sends a signal to the speed limiter solenoid valve, triggering the safety clamp device. S30B, the control component sends a signal to the host control circuit, the host control circuit sends a signal to the host drive circuit, the host decelerates and brakes, and the host stops the holding brake. The S30C and control components trigger an alarm through the elevator communication system, notifying elevator management personnel to halt rescue efforts.

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