Elevator car leveling monitoring device

Abstract

The invention relates to an elevator car leveling monitoring device which is arranged in a car in an elevator shaft, a mounting frame is arranged on the car, two photoelectric switches are detachably connected to the mounting frame, and the two photoelectric switches are vertically distributed and horizontally arranged. The position, corresponding to the optoelectronic switch, of the inner side wall of the elevator shaft is connected with an installation plate, the installation plate is connected with a magnetism isolating plate, the magnetism isolating plate is vertically arranged, the elevator car is connected with a control module, the optoelectronic switch is in telecommunication connection with the control module, and when the elevator car is leveled at a floor opening of the elevator shaft, the magnetism isolating plate is connected with the control module. The magnet vane is located between the induction ends of the two optoelectronic switches. The device has the effects of giving an alarm and recording time when the elevator car is uneven.

Description

Technical Field

[0001] This application relates to the technical field of elevator car leveling, and particularly relates to an elevator car leveling monitoring device. Background Art

[0002] A pulley and a lifting motor are arranged at the top end of the elevator shaft. Both ends of the pulley are respectively connected to the car and the counterweight by steel wire ropes. During lifting, the traction wheel is driven to rotate by the lifting motor, and the steel wire rope moves, so that the car and the counterweight move to realize the lifting of the elevator.

[0003] Among them, the movement of the steel wire rope transfers energy through the friction between the traction wheel and the steel wire rope, that is, the tractive force. Its magnitude is determined by factors such as the shape of the rope groove of the traction wheel and the thickness of the steel wire rope. Due to wear during long-term use, the rope groove of the traction wheel deforms, the steel wire rope wears, and the tractive force weakens; in addition, the stop of the elevator depends on the motor shaft brake. The brake consists of two pairs of clamps with friction pads. The friction pads will wear and carbonize, resulting in a reduction in braking force; the elevator control is integrated and controlled through an electrical control system. After long-term use, there is a possibility of data chaos and out-of-control in the software control.

[0004] If any one of the above three situations occurs, when the elevator stops at a flat floor, it is easy to cause the elevator car not to be leveled. In this way, although it can continue to run, there are safety hazards, and it is not easy for maintenance personnel to discover. In addition, it also affects the passengers' access to the car, causing inconvenience. Summary of the Invention

[0005] In order to solve the above problems and remind the maintenance personnel to carry out maintenance as soon as possible, this application provides an elevator car leveling monitoring device.

[0006] The elevator car leveling monitoring device provided by this application adopts the following technical solutions: An elevator car leveling monitoring device includes a car arranged in the elevator shaft. An installation frame is arranged on the car. Two photoelectric switches are detachably connected to the installation frame. The two photoelectric switches are vertically distributed and horizontally arranged. An installation plate is connected to the inner side wall of the elevator shaft at a position corresponding to the photoelectric switches. A magnetic isolation plate is connected to the installation plate. The magnetic isolation plate is vertically arranged. A control module is connected to the car. The photoelectric switches are electrically connected to the control module. When the car is leveled at the elevator shaft floor opening, the magnetic isolation plate is located between the sensing ends of the two photoelectric switches.

[0007] By adopting the above technical solution, when the car moves to the floor entrance of the elevator shaft, if the magnetic isolation plate only passes through one of the photoelectric switches, the car is not level with the floor entrance of the elevator shaft, and the control module issues an alarm and records relevant content to remind maintenance personnel to inspect as soon as possible; if the car is level with the floor entrance of the elevator shaft, the magnetic isolation plate is located between the two photoelectric switches. By setting up photoelectric switches, magnetic isolation plates and control modules, the leveling status of the car can be monitored. If the sensing ends of the two photoelectric switches cannot be blocked by the magnetic isolation plates at the same time, the control module issues an alarm to prevent the car from opening the door; if the magnetic isolation plates block the sensing ends of the two photoelectric switches at the same time, the car is aligned with the floor entrance of the elevator shaft, and the car door can be opened smoothly.

[0008] Optionally, a mounting assembly is provided on the mounting frame, and the mounting assembly includes a limiting frame, a rotating frame and a pushing spring, the limiting frame is connected to the mounting frame, the limiting frame is a rectangular frame, and an opening is provided on one side, the rotating frame is rotatably connected to one of the two ends of the limiting frame, one end of the rotating frame is a tightening end, and the other end is provided with an avoidance groove, a fixing column is connected to the side wall of the limiting frame, the fixing column passes through the avoidance groove, a pushing plate is sleeved on the fixing column, the pushing spring is sleeved on the fixing column and is located between the pushing plate and the limiting frame, one end of the photoelectric switch is located in the limiting frame, and a tightening groove matching the shape of the tightening end of the rotating frame is provided on the photoelectric switch, and when the photoelectric switch is installed, the tightening end presses against the tightening groove.

[0009] By adopting the above technical solution, when installing the photoelectric switch, the other end of the rotating frame is moved to compress the push spring, and then one end of the photoelectric switch is inserted into the limiting frame, the rotating frame is loosened, and the push spring pushes the other end of the rotating frame, and the rotating frame rotates in the opposite direction until the tightening end presses the tightening groove, thereby limiting the freedom of the photoelectric switch and realizing the installation of the photoelectric switch.

[0010] Optionally, a leveling plate is connected to the limiting frame, the leveling plate is arranged in an L shape, and the photoelectric switch is located between the leveling plate and the limiting frame.

[0011] By adopting the above technical solution and setting a leveling plate, the top wall of the photoelectric switch is attached to the leveling plate, thereby limiting the horizontal installation of the photoelectric switch and ensuring the shortest distance between the two photoelectric switches.

[0012] Optionally, two cleaning plates are connected to the mounting frame, the two cleaning plates are arranged opposite to each other and are both located between the two photoelectric switches, cleaning brushes are installed on the cleaning plates, and the magnetic isolation plate is located between the two cleaning plates.

[0013] By adopting the above technical solution, as the use time prolongs, impurities such as dust and cobwebs will accumulate on the surface of the magnetic isolation plate, which will affect the blocking effect of the induction end of the photoelectric switch. By setting the cleaning brush, when passing by the magnetic isolation plate, the cleaning brush cleans the two side walls of the magnetic isolation plate to ensure that the surface of the magnetic isolation plate is smooth and clean, and ensure that the induction end of the photoelectric switch can be smoothly blocked.

[0014] Optionally, an automatic alignment component is arranged between the cleaning plate and the mounting plate. The automatic alignment component includes a resistance sheet and a contact. A plurality of resistance sheets are connected to the mounting plate from top to bottom. The resistance value of the resistance sheet at the middle position in the height direction is the largest. From the middle to the highest or lowest position, the resistance value of the resistance sheet gradually decreases. The contact is connected to the cleaning plate and abuts against the resistance sheet. The contact is electrically connected to the control module.

[0015] By adopting the above technical solution, when the car is aligned with the elevator shaft floor opening, the contact abuts against the resistance sheet at the middle position; when the car is not level with the elevator shaft floor opening, the contact abuts against the resistance sheet and sends an electrical signal to the control module. The control module automatically calculates the distance between this resistance sheet and the resistance sheet at the middle position, and controls the lifting motor to rotate correspondingly to fine-tune the position of the car.

[0016] Optionally, a height adjustment component is arranged on the car. The height adjustment component includes a mounting frame, a sliding block, an adjusting gear, a limiting gear and a fixed rack. The mounting frame is connected to the car. The fixed rack is vertically and fixedly connected inside the mounting frame. The sliding block is connected to the mounting frame and is slidably matched with the mounting frame. A square column is slidably matched on the sliding block. The limiting gear is connected to the square column and meshes with the fixed rack in the normal state. A pressing spring is sleeved on the square column. The pressing spring is located between the limiting gear and the sliding block. A rotating column is rotatably connected to the square column. A straight groove is formed on the mounting frame. The rotating column passes through the straight groove and extends to the outside of the mounting frame. An adjusting handwheel is connected to the rotating column and is located inside the mounting frame. The adjusting gear is connected to the rotating column and is located inside the mounting frame.

[0017] By adopting the above technical solution, the height adjustment component is used to assist in calibrating the relative positions of the two photoelectric switches and the magnetic isolation plate during installation. During adjustment, press the rotating column to move the square column, so that the limiting gear disengages from the fixed rack, and the adjusting gear moves and meshes with the fixed rack. At this time, rotate the rotating column. Through the meshing of the adjusting gear and the fixed rack, drive the sliding block to move until the photoelectric switch on the mounting frame is moved to the specified position. Pull the rotating column in the reverse direction, and the adjusting gear disengages from the fixed rack. At this time, the limiting gear moves in the reverse direction under the action of the pressing spring and meshes with the fixed rack, so as to limit the movement of the sliding block, achieving the effect of adjusting the height of the photoelectric switch.

[0018] Optionally, a stabilizing block is slidably fitted on the linear groove, and the rotating column is slidably fitted within the stabilizing block.

[0019] By adopting the above technical solution, the stabilizing block is used to improve the rotational and translational stability of the rotating column, making it more convenient to move the mounting bracket.

[0020] Optionally, an anti-rust layer is provided on the surface of the magnetic shielding plate.

[0021] By adopting the above technical solution, the magnetic shielding plate of the elevator usually uses an iron plate material. However, after long-term use, the surface of the magnetic shielding plate will rust, resulting in a non-smooth surface of the magnetic shielding plate and affecting the blocking effect of the sensing end of the optoelectronic switch. By providing the anti-rust layer, the possibility of rusting of the magnetic shielding plate is reduced, ensuring the blocking effect of the sensing end of the optoelectronic switch.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the car moves to the elevator shaft floor opening, if the magnetic shielding plate only passes through one of the optoelectronic switches, at this time the car is not level with the elevator shaft floor opening, the control module issues an alarm and records relevant content, reminding the maintenance personnel to perform maintenance as soon as possible; if the car is level with the elevator shaft floor opening, then the magnetic shielding plate is located between the two optoelectronic switches. By providing the optoelectronic switch, the magnetic shielding plate and the control module, the leveling condition of the car is monitored. If the sensing ends of the two optoelectronic switches cannot be blocked by the magnetic shielding plate at the same time, the control module issues an alarm to prevent the car door from opening; if the magnetic shielding plate blocks the sensing ends of the two optoelectronic switches at the same time, then the car is aligned with the elevator shaft floor opening and the car door can be opened smoothly; 2. When the car is aligned with the elevator shaft floor opening, the contact touches the resistance piece at the middle position. When the car is not level with the elevator shaft floor opening, the contact touches the resistance piece and sends an electrical signal to the control module. The control module automatically calculates the distance between this resistance piece and the resistance piece at the middle position, and controls the lifting motor to rotate correspondingly to finely adjust the position of the car; 3. During adjustment, press the rotating column to move the square column, disengage the limiting gear from the fixed rack, and move the adjusting gear, which meshes with the fixed rack. At this time, rotate the rotating column. By the engagement of the adjusting gear and the fixed rack, drive the sliding block to move until the optoelectronic switch on the mounting bracket is moved to the designated position. Pull the rotating column in the reverse direction, and the adjusting gear disengages from the fixed rack. At this time, the limiting gear moves in the reverse direction under the action of the pressing spring force and meshes with the fixed rack, thereby restricting the movement of the sliding block, achieving the effect of adjusting the height of the optoelectronic switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the elevator in the embodiment of the present application.

[0024] Figure 2 is a schematic diagram of the structure of the monitoring device in the embodiment of the present application.

[0025] Figure 3 It is an exploded view used to illustrate the structure of the height adjustment component in the embodiment of the present application.

[0026] Figure 4 It is a sectional view used to illustrate the structure of the height adjustment component in the embodiment of the present application.

[0027] Figure 5 It is a schematic structural diagram of the installation component in the embodiment of the present application.

[0028] Explanation of reference numerals: 01, elevator shaft; 02, car; 1, mounting frame; 11, cleaning plate; 12, cleaning brush; 2, height adjustment component; 21, mounting frame; 22, sliding block; 221, square column; 222, pressing spring; 223, rotating column; 2231, adjusting handwheel; 2232, stabilizing block; 23, adjusting gear; 24, limiting gear; 25, fixed rack; 3, photoelectric switch; 31, control module; 4, installation component; 41, limiting frame; 411, leveling plate; 42, rotating frame; 43, pushing spring; 5, mounting plate; 51, magnetic isolation plate; 6, automatic alignment component; 61, resistance sheet; 62, contact. Detailed implementation manners

[0029] The following will further describe the present application in detail with reference to the attached Figures 1 - 5 drawings.

[0030] The embodiment of the present application discloses an elevator car leveling monitoring device. Referring to Figure 1 , the elevator car leveling monitoring device includes a car 02 arranged in an elevator shaft 01, and a mounting frame 1 is arranged on the car 02.

[0031] Referring to Figure 2 and Figure 3 , a height adjustment component 2 is arranged on the car 02. The height adjustment component 2 includes a mounting frame 21, a sliding block 22, an adjusting gear 23, a limiting gear 24 and a fixed rack 25. The mounting frame 21 is fixedly connected to the top end of the car 02, the sliding block 22 is fixedly connected to the mounting frame 1, and the sliding block 22 is slidably fitted on the mounting frame 21. The fixed rack 25 is vertically fixedly connected inside the mounting frame 21.

[0032] Referring to Figure 3 and Figure 4, a square column 221 is penetrated through the sliding block 22, and the limiting gear 24 is fixedly connected to the square column 221. A pressing spring 222 is sleeved on the square column 221, and the pressing spring 222 is located between the limiting gear 24 and the sliding block 22. In the normal state, the limiting gear 24 meshes with the fixed rack 25. A rotating column 223 is rotatably connected to the square column 221, and the adjusting gear 23 is fixedly connected to the rotating column 223 and is located inside the mounting frame 21. A linear groove is vertically opened on the mounting frame 21, the rotating column 223 passes through the linear groove, and an adjusting handwheel 2231 is fixedly connected to the end of the rotating column 223. A stabilizing block 2232 is slidably fitted on the linear groove, and the rotating column 223 is slidably fitted on the stabilizing block 2232. The stabilizing block 2232 is used to improve the stability of the rotating column 223.

[0033] When adjusting the height of the mounting frame 1, press the adjusting handwheel 2231, the rotating column 223 moves, the square column 221 moves, the limiting gear 24 disengages from the fixed rack 25, and the pressing spring 222 is compressed. At this time, the adjusting gear 23 moves and meshes with the fixed rack 25. Then rotate the adjusting handwheel 2231 to drive the sliding block 22 to move to the specified position. Pull the rotating column 223 in the reverse direction, the adjusting gear 23 disengages from the fixed rack 25, and the limiting rack is affected by the acting force of the pressing spring 222 to drive the square column 221 to move in the reverse direction and re-engage with the fixed rack 25 to limit the sliding block 22, realizing the adjustment of the mounting frame 1.

[0034] Refer to Figure 2 and Figure 5 , two photoelectric switches 3 are arranged on the mounting frame 1 from top to bottom. The photoelectric switch 3 is in a gate shape, and a control module 31 is installed on the car 02. The photoelectric switch 3 is electrically connected to the control module 31. An installation component 4 is arranged on the mounting frame 1. The installation component 4 includes a limiting frame 41, a rotating frame 42 and a pushing spring 43. The limiting frame 41 is fixedly connected to the mounting frame 1. The limiting frame 41 is a rectangular frame and is provided with an opening on one side. A leveling plate 411 is fixedly connected to the limiting frame 41, and the cross section of the leveling plate 411 is in an L shape.

[0035] Refer to Figure 5 , a rotating frame 42 is rotatably connected to each end of the limiting frame 41. One end of the rotating frame 42 is a pressing end, and the other end is provided with an avoidance groove. A fixed column is fixedly connected to the end of the limiting frame 41. A pushing plate is sleeved on the fixed column, and the pushing spring 43 is sleeved on the fixed column and is located between the fixed frame and the pushing plate. The pushing plate abuts against the other end of the rotating frame 42. One end of the photoelectric switch 3 is inserted between the limiting frame 41 and the leveling plate 411. A pressing groove is opened at the position corresponding to the pressing end on the photoelectric switch 3. The shape of the pressing groove matches that of the pressing end, and the pressing end of the rotating frame 42 presses the pressing groove.

[0036] Refer to Figure 2, a mounting plate 5 is connected to the inner side wall of the elevator shaft 01 by bolts. A magnetic isolation plate 51 is fixedly connected to the mounting plate 5. The magnetic isolation plate 51 is perpendicular to the mounting plate 5 and is located between the sensing ends of the two optoelectronic switches 3. An anti-rust layer is provided on the surface of the magnetic isolation plate 51. In this embodiment, the anti-rust layer is a polytetrafluoroethylene coating.

[0037] When the car 02 moves to the floor opening position of the elevator shaft 01, if the car 02 is level with the floor opening of the elevator shaft 01, at this time, the magnetic isolation plate 51 is located between the sensing ends of the two optoelectronic switches 3 to isolate the two optoelectronic switches 3; if the car 02 is not level with the floor opening of the elevator shaft 01, only one optoelectronic switch 3 is blocked by the magnetic isolation plate 51, the door of the car 02 will not open, and the control module 31 will alarm and record the time to remind the maintenance personnel to perform maintenance as soon as possible.

[0038] Refer to Figure 2 and Figure 5 , in order to ensure the blocking effect of the magnetic isolation plate 51, two cleaning plates 11 are fixedly connected to the mounting frame 1. The two cleaning plates 11 are arranged oppositely, and cleaning brushes 12 are fixedly connected to the cleaning plates 11. The magnetic isolation plate 51 is located between the two cleaning plates 11. The surface of the magnetic isolation plate 51 is wiped by the cleaning brushes 12 to ensure that there are no impurities on the surface of the magnetic isolation plate 51.

[0039] Refer to Figure 2 , an automatic alignment component 6 is arranged between the cleaning plate 11 and the mounting plate 5. The automatic alignment component 6 includes a resistance sheet 61 and a contact 62. The resistance sheet 61 is fixedly connected to the mounting plate 5 from top to bottom. The resistance value of the resistance sheet 61 at the middle position in the height direction is the largest, and it extends from the middle to the highest and lowest positions, and the resistance value of the resistance sheet 61 gradually decreases. The contact 62 is installed on the cleaning plate 11. When the car 02 is level with the floor opening of the elevator shaft 01, the contact 62 abuts against the resistance sheet 61 at the middle position, and the contact 62 is electrically connected to the control module 31.

[0040] When the magnetic isolation plate 51 blocks the sensing end of one optoelectronic switch 3, the contact 62 sends an electrical signal to the controller. The control module 31 calculates the distance between the contact 62 and the resistance sheet 61 at the middle position at this time, and controls the lifting motor to make the car 02 move slightly until the magnetic isolation plate 51 blocks the sensing ends of the two optoelectronic switches 3 again, realizing the automatic leveling of the car 02 at the floor opening of the elevator shaft 01.

[0041] The implementation principle of an elevator car leveling monitoring device in an embodiment of this application is as follows: When the car 02 is level with the floor opening of the elevator shaft 01, the magnetic shielding plate 51 blocks the sensing ends of the two optoelectronic switches 3; when the car 02 is not level with the floor opening of the elevator shaft 01, the magnetic shielding plate 51 blocks the sensing end of one optoelectronic switch 3, and the car 02 door is in the closed state. At this time, the contact 62 sends an electrical signal to the control module 31, and the control module 31 calculates the distance between the contact 62 and the resistance chip 61 at the middle position in the height direction, and controls the lifting motor to move the car 02 again until the magnetic shielding plate 51 blocks the sensing ends of the two optoelectronic switches 3, achieving the effect that the car 02 is level with the floor opening of the elevator shaft 01.

[0042] By setting the optoelectronic switches 3, the magnetic shielding plate 51 and the control module 31, the leveling condition of the car 02 is monitored. If the sensing ends of the two optoelectronic switches 3 cannot be blocked by the magnetic shielding plate 51 at the same time, the control module 31 issues an alarm to prevent the car 02 from opening the door; if the magnetic shielding plate 51 blocks the sensing ends of the two optoelectronic switches 3 at the same time, then the car 02 is aligned with the floor opening of the elevator shaft 01, and the car 02 door can be opened smoothly.

[0043] The above are all preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An elevator car leveling monitoring device, including a car (02) disposed in an elevator shaft (01), characterized in that: An installation frame (1) is provided on the car (02). Two photoelectric switches (3) are detachably connected to the installation frame (1). The two photoelectric switches (3) are vertically distributed and horizontally arranged. An installation plate (5) is connected to the inner side wall of the elevator shaft (01) at a position corresponding to the photoelectric switch (3). A magnetic isolation plate (51) is connected to the installation plate (5). The magnetic isolation plate (51) is vertically arranged. A control module (31) is connected to the car (02). The photoelectric switch (3) is electrically connected to the control module (31). When the car (02) is level with the floor opening of the elevator shaft (01), the magnetic isolation plate (51) is located between the sensing ends of the two photoelectric switches (3).

2. The elevator car leveling monitoring device according to claim 1, characterized in that: An installation component (4) is provided on the installation frame (1). The installation component (4) includes a limiting frame (41), a rotating frame (42) and a pushing spring (43). The limiting frame (41) is connected to the installation frame (1). The limiting frame (41) is a rectangular frame with one side open. One rotating frame (42) is rotatably connected to each end of the limiting frame (41). One end of the rotating frame (42) is a pressing end, and the other end is provided with an avoidance groove. A fixing column is connected to the side wall of the limiting frame (41). The fixing column passes through the avoidance groove. A pushing plate is sleeved on the fixing column. The pushing spring (43) is sleeved on the fixing column and is located between the pushing plate and the limiting frame (41). One end of the photoelectric switch (3) is located inside the limiting frame (41). A pressing groove matching the outer shape of the pressing end of the rotating frame (42) is provided on the photoelectric switch (3). When installing the photoelectric switch (3), the pressing end presses against the pressing groove.

3. The elevator car leveling monitoring device according to claim 2, wherein: A leveling plate (411) is connected to the limiting frame (41). The leveling plate (411) is arranged in an L shape. The photoelectric switch (3) is located between the leveling plate (411) and the limiting frame (41).

4. The elevator car leveling monitoring device according to claim 2, wherein: Two cleaning plates (11) are connected to the installation frame (1). The two cleaning plates (11) are arranged oppositely and are both located between the two photoelectric switches (3). A cleaning brush (12) is installed on the cleaning plate (11). The magnetic isolation plate (51) is located between the two cleaning plates (11).

5. The elevator car leveling monitoring device according to claim 4, characterized in that: An automatic alignment component (6) is arranged between the cleaning plate (11) and the installation plate (5). The automatic alignment component (6) includes a resistance sheet (61) and a contact (62). A plurality of resistance sheets (61) are connected to the installation plate (5) from top to bottom. The resistance value of the resistance sheet (61) at the middle position in the height direction is the largest. From the middle to the highest or lowest position, the resistance value of the resistance sheet (61) gradually decreases. The contact (62) is connected to the cleaning plate (11) and abuts against the resistance sheet (61). The contact (62) is electrically connected to the control module (31).

6. The elevator car leveling monitoring device according to claim 1, characterized in that: A height adjustment assembly (2) is provided on the car (02). The height adjustment assembly (2) includes a mounting frame (21), a sliding block (22), an adjustment gear (23), a limiting gear (24), and a fixed rack (25). The mounting frame (21) is connected to the car (02). The fixed rack (25) is vertically and fixedly connected inside the mounting frame (21). The sliding block (22) is connected to the mounting bracket (1) and is in sliding fit with the mounting frame (21). A square column (221) is in sliding fit on the sliding block (22). The limiting gear (24) is connected to the square column (221) and meshes with the fixed rack (25) in the normal state. A pressing spring (222) is sleeved on the square column (221). The pressing spring (222) is located between the limiting gear (24) and the sliding block (22). A rotating column (223) is rotatably connected to the square column (221). A linear groove is formed on the mounting frame (21). The rotating column (223) passes through the linear groove and extends outside the mounting frame (21). An adjustment handwheel (2231) is connected to the rotating column (223). The adjustment gear (23) is connected to the rotating column (223) and is located inside the mounting frame (21).

7. The elevator car leveling monitoring device according to claim 6, wherein: A stabilizing block (2232) is in sliding fit on the linear groove. The rotating column (223) is in sliding fit inside the stabilizing block (2232).

8. The elevator car leveling monitoring device according to claim 1, wherein: An anti-rust layer is provided on the surface of the magnetic isolation plate (51).

Images