Elevator door limit monitoring device

Abstract

The utility model discloses an elevator door limit monitoring device, comprising a shell, a cavity is arranged inside the shell, a gear is rotatably connected to an inner wall of one side of the cavity, a toothed plate is meshed with the upper surface and the lower surface of the gear, one end of the toothed plate slides through the inner wall of the cavity, a connecting plate is fixedly installed at one end of the toothed plate, a fixing plate is fixedly installed at one side of the connecting plate, the surface of the fixing plate is slidably connected to the surface of the shell, and a plurality of groups of plastic telescopic rods are fixedly installed on the fixing plate and the bottom of the shell. The utility model rotates the gear through the arrangement of the gear and the toothed plate, drives the toothed plate to move outward, and makes the connecting plate abut against the elevator door, holds the telescopic end of the plastic telescopic rod and pulls it downward and abuts against the ground, blocks relatively high creatures without danger prejudgment awareness, prevents them from entering therein and causing them to fall into the elevator shaft, thereby better meeting the use needs of elevator maintenance personnel.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator maintenance equipment, in particular to an elevator door limit monitoring device. Background Art

[0002] When an elevator is damaged during use, staff are required to perform maintenance and repairs on the elevator. The elevator door needs to be blocked to prevent the elevator door from closing suddenly during the repair process, so an elevator door limit device needs to be used.

[0003] According to an elevator door limit device for elevator maintenance with publication number CN212832223U, the utility model discloses an elevator door limit device for elevator maintenance, comprising a working frame, an inner cavity of the working frame is fixedly connected with a motor, an output end of the motor is fixedly connected with a first bevel gear, one side of the first bevel gear is meshingly connected with a second bevel gear, and the inner ring of the second bevel gear is fixedly connected with a positive and negative threaded rod; the utility model uses the motor and the positive and negative threaded rod in coordination, and the user places the device in the middle of the elevator door, sucks the ground with a suction cup, turns on the motor through a switch, the motor drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the positive and negative threaded rod to rotate, the positive and negative threaded rod drives the threaded sleeve to move, and the threaded sleeve drives the limit plate to move, so as to limit the elevator door, thereby solving the problem that the existing limit device cannot adjust the distance according to the size of the elevator door and cannot meet the needs of users.

[0004] The above-mentioned elevator door limit device for elevator maintenance has some problems in use. For example, when a creature with a high height and no awareness of danger prediction approaches, the creature can easily step over the device and enter the elevator shaft, causing an accident. Utility Model Content

[0005] The purpose of the utility model is to provide an elevator door limit monitoring device to solve the problem in the above background technology that a creature that is taller and does not have a sense of danger prediction cannot be blocked.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an elevator door limit monitoring device, comprising a shell, a cavity is arranged inside the shell, a gear is rotatably connected to the inner wall of one side of the cavity, the upper surface and the lower surface of the gear are meshed with a toothed plate, one end of the toothed plate slides through the inner wall of the cavity, a connecting plate is fixedly installed on one end of the toothed plate, a fixing plate is fixedly installed on one side of the connecting plate, the surface of the fixing plate is slidably connected to the surface of the shell, and a plurality of groups of plastic telescopic rods are fixedly installed on the fixing plate and the bottom of the shell.

[0007] Preferably, a DSP controller is fixedly mounted on the inner wall surface of the cavity, an infrared sensor and an audible and visual alarm are fixedly mounted on the top of the shell, the signal output end of the infrared sensor is electrically connected to the signal input end of the DSP controller through a first wire, and the control output end of the DSP controller is electrically connected to the electrical control end of the audible and visual alarm through a second wire.

[0008] Preferably, the upper and lower surfaces of the cavity are provided with sliding grooves, and the surface of the tooth plate is slidably connected to the inner cavity of the sliding groove.

[0009] Preferably, fixing blocks are fixedly installed on the upper and lower surfaces of the shell, a circular hole is opened on the surface of the fixing block, a connecting rod is slidably connected to the inner cavity of the circular hole, and one end of the connecting rod is fixedly connected to one side surface of the connecting plate.

[0010] Preferably, a connecting column is fixedly installed on the surface of the gear, one end of the connecting column passes through the inner wall of the cavity and extends to the outside of the outer shell, a fixing sleeve is fixedly installed on the surface of the outer shell, the connecting column passes through the inner cavity of the fixing sleeve, a bolt is threadedly connected to the surface of the fixing sleeve, one end of the bolt abuts against the surface of the connecting column, and a handwheel is fixedly installed on one end of the connecting column.

[0011] Preferably, a blocking block is fixedly mounted on the surface of the connecting plate, and a plurality of groups of anti-slip protrusions are provided on the surface of the connecting plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model rotates the gears through the arrangement of gears and toothed plates, drives the toothed plates to move outward, and makes the connecting plates abut against the elevator door, holds the telescopic end of the plastic telescopic rod and pulls it downward and abuts against the ground, thereby blocking higher creatures without danger prediction awareness, preventing them from entering and falling into the elevator shaft, thereby better meeting the use needs of elevator maintenance personnel.

[0014] 2. Through the setting of infrared sensor, sound and light alarm and DSP controller, when a creature approaches, the infrared sensor will feed back to the DSP controller, and the DSP controller will control the sound and light alarm to make a sound, thereby serving as a warning. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the hand wheel of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the chute of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the bolt of the utility model;

[0019] Figure 5 The utility model is a structural schematic diagram of the sound and light alarm.

[0020] In the figure: 100, fixing block; 101, connecting rod; 102, connecting plate; 103, blocking block; 104, anti-skid protrusion; 105, plastic telescopic rod; 106, tooth plate; 107, fixing plate; 108, cavity; 109, fixing sleeve; 110, connecting column; 111, hand wheel; 112, gear; 113, slide groove; 114, circular hole; 115, bolt; 200, infrared sensor; 201, sound and light alarm; 202, first wire; 203, second wire; 204, DSP controller; 300, housing. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0022] See also Figure 1-5 The utility model provides a technical solution: the elevator door limit monitoring device comprises a shell 300, a cavity 108 is arranged inside the shell 300, a gear 112 is rotatably connected to the inner wall of one side of the cavity 108, a tooth plate 106 is meshed with the upper surface and the lower surface of the gear 112, one end of the tooth plate 106 slides through the inner wall of the cavity 108, a connecting plate 102 is fixedly installed on one end of the tooth plate 106, a fixing plate 107 is fixedly installed on one side of the connecting plate 102, and the surface of the fixing plate 107 is slidably connected to the inner wall of the cavity 108. Connecting to the surface of the housing 300, the fixing plate 107 and the bottom of the housing 300 are fixedly installed with a plurality of sets of plastic telescopic rods 105. By rotating the gear 112, the tooth plate 106 is driven to move outward, and the connecting plate 102 is made to abut against the elevator door. The telescopic end of the plastic telescopic rod 105 is pulled downward and abutted against the ground, so as to block the creatures that are taller and do not have the awareness of anticipating danger, and prevent them from entering and falling into the elevator shaft, thereby better meeting the use needs of elevator maintenance personnel. In specific implementation, the plastic telescopic rod 105 is composed of multiple hollow tubes that can slide and sleeve each other.

[0023] Furthermore, a DSP controller 204 is fixedly installed on the inner wall surface of the cavity 108, and an infrared sensor 200 and a sound and light alarm 201 are fixedly installed on the top of the shell 300. The signal output end of the infrared sensor 200 is electrically connected to the signal input end of the DSP controller 204 through a first wire 202, and the control output end of the DSP controller 204 is electrically connected to the electrical control end of the sound and light alarm 201 through a second wire 203. When a creature approaches, the infrared sensor 200 feeds back to the DSP controller 204, and the DSP controller 204 controls the sound and light alarm 201 to emit a sound, thereby serving as a warning.

[0024] The upper and lower surfaces of the cavity 108 are provided with slide grooves 113 , and the surface of the tooth plate 106 is slidably connected to the inner cavity of the slide groove 113 . The movement direction of the tooth plate 106 is limited by the setting of the slide groove 113 .

[0025] It is worth mentioning that a fixing block 100 is fixedly installed on the upper and lower surfaces of the outer shell 300, and a circular hole 114 is opened on the surface of the fixing block 100. The inner cavity of the circular hole 114 is slidably connected with a connecting rod 101. One end of the connecting rod 101 is fixedly connected to one side surface of the connecting plate 102, so as to bear part of the force generated by gravity on the connecting plate 102, thereby avoiding sagging of the side of the connecting plate 102 installed due to excessive force when the tooth plate 106 is unfolded, and limiting the movement direction of the connecting plate 102.

[0026] Furthermore, a connecting column 110 is fixedly installed on the surface of the gear 112, one end of the connecting column 110 passes through the inner wall of the cavity 108 and extends to the outside of the shell 300, a fixing sleeve 109 is fixedly installed on the surface of the shell 300, the connecting column 110 passes through the inner cavity of the fixing sleeve 109, and a bolt 115 is threadedly connected to the surface of the fixing sleeve 109, one end of the bolt 115 abuts against the surface of the connecting column 110. Through the setting of the bolt 115, when the elevator door limit monitoring device is deployed, the bolt 115 is rotated so that one end of the bolt 115 abuts against the surface of the connecting column 110, thereby fixing the connecting column 110.

[0027] Among them, a blocking block 103 is fixedly installed on the surface of the connecting plate 102, and a plurality of groups of anti-slip protrusions 104 are arranged on the surface of the connecting plate 102. The blocking block 103 is clamped in the gap between the elevator door and the car, thereby preventing the elevator door limit monitoring device from being displaced, and the friction between the connecting plate 102 and the elevator door frame is increased by the arrangement of the anti-slip protrusions 104.

[0028] When using it, first take out the elevator door limit monitoring device, hold it with one hand, and rotate the hand wheel 111 with the other hand, so that the gear 112 is driven to rotate through the connecting column 110, so that the tooth plate 106 moves outward, thereby driving the fixing plate 107 and the connecting plate 102 to move outward. When the blocking block 103 is clamped in the gap between the elevator door and the car, tighten the bolt 115 to fix the gear 112, hold the telescopic end of the plastic telescopic rod 105 by hand, pull it downward, and abut it against the ground, and turn on the DSP controller 204 to put the infrared sensor 200 and the sound and light alarm 201 in working condition.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevator door limit monitoring device, characterized in that: The invention comprises a shell (300), wherein a cavity (108) is arranged inside the shell (300), a gear (112) is rotatably connected to an inner wall of one side of the cavity (108), a toothed plate (106) is meshed between the upper surface and the lower surface of the gear (112), one end of the toothed plate (106) slides through the inner wall of the cavity (108), a connecting plate (102) is fixedly installed on one end of the toothed plate (106), a fixing plate (107) is fixedly installed on one side of the connecting plate (102), a surface of the fixing plate (107) is slidably connected to the surface of the shell (300), and a plurality of groups of plastic telescopic rods (105) are fixedly installed between the fixing plate (107) and the bottom of the shell (300).

2. An elevator door limit monitoring device according to claim 1, characterized in that; A DSP controller (204) is fixedly mounted on the inner wall surface of the cavity (108); an infrared sensor (200) and an audible and visual alarm (201) are fixedly mounted on the top of the housing (300); a signal output end of the infrared sensor (200) is electrically connected to a signal input end of the DSP controller (204) via a first wire (202); and a control output end of the DSP controller (204) is electrically connected to an electrical control end of the audible and visual alarm (201) via a second wire (203).

3. An elevator door limit monitoring device according to claim 1, characterized in that: The upper and lower surfaces of the cavity (108) are provided with a sliding groove (113), and the surface of the tooth plate (106) is slidably connected to the inner cavity of the sliding groove (113).

4. An elevator door limit monitoring device according to claim 1, characterized in that: A fixing block (100) is fixedly mounted on the upper and lower surfaces of the housing (300), a circular hole (114) is provided on the surface of the fixing block (100), a connecting rod (101) is slidably connected to the inner cavity of the circular hole (114), and one end of the connecting rod (101) is fixedly connected to a side surface of the connecting plate (102).

5. The elevator door limit monitoring device according to claim 1, characterized in that: A connecting column (110) is fixedly mounted on the surface of the gear (112), one end of the connecting column (110) passes through the inner wall of the cavity (108) and extends to the outside of the housing (300), a fixing sleeve (109) is fixedly mounted on the surface of the housing (300), the connecting column (110) passes through the inner cavity of the fixing sleeve (109), a bolt (115) is threadedly connected to the surface of the fixing sleeve (109), one end of the bolt (115) abuts against the surface of the connecting column (110), and a hand wheel (111) is fixedly mounted on one end of the connecting column (110).

6. The elevator door limit monitoring device according to claim 1, characterized in that: A blocking block (103) is fixedly mounted on the surface of the connecting plate (102), and a plurality of groups of anti-slip protrusions (104) are arranged on the surface of the connecting plate (102).

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