Self-checking device for a progressive elevator safety gear

Abstract

The utility model relates to elevator safety technical field discloses a kind of self-checking device of progressive elevator safety tongs, comprising: driving motor, crank slider mechanism, transmission rod, controller, infrared sensor, light-absorbing block;Transmission rod one end is set in wedge connecting rod directly below, the other end passes through safety tongs bottom plate, and is connected with driving motor transmission by crank slider mechanism;The driving motor is used to drive crank slider mechanism movement, to drive the transmission rod and wedge connecting rod reciprocating motion along axial direction in turn;The infrared sensor is fixedly arranged on safety tongs side plate, and is aligned with the light-absorbing block being arranged on the wedge connecting rod, and the output end of the infrared sensor is connected with the controller, and the output end of the controller is connected with the driving motor.The utility model can realize the automatic and accurate detection of elevator safety tong displacement and reset, and detection efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of elevator safety technology, specifically a self-testing device for a progressive elevator safety clamp. Background Technology

[0002] With the acceleration of urbanization, elevators are becoming increasingly widely used as vertical transportation tools. The safety performance of elevators plays a crucial role in protecting the lives and property of passengers. The safety brake is one of the key safety components of an elevator; it locks the car firmly to the guide rails in the event of a malfunction, preventing the car from falling. Therefore, the inspection of elevator safety brakes is essential for elevator maintenance and repair. However, traditional safety brake inspection methods mainly rely on regular manual checks. This method is not only inefficient but also susceptible to human factors, failing to guarantee accuracy and timeliness, and easily leading to undetected safety malfunctions. Therefore, how to achieve automatic, rapid, and accurate inspection of elevator safety brakes has become an urgent problem to be solved. Utility Model Content

[0003] This invention overcomes the shortcomings of the existing technology by providing a progressive self-inspection device for elevator safety gears. It aims to solve the technical problem that the detection of elevator safety gears in the existing technology can only rely on manual inspection, which is inefficient and inaccurate.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a self-testing device for a progressive elevator safety clamp, comprising: a drive motor, a crank-slider mechanism, a transmission rod, a controller, an infrared sensor, and a light-absorbing block; one end of the transmission rod is located directly below the wedge connecting rod, and the other end passes through the safety clamp base plate and is connected to the drive motor via the crank-slider mechanism; the drive motor is used to drive the crank-slider mechanism to move, thereby driving the transmission rod and the wedge connecting rod to reciprocate along the axial direction; the infrared sensor is fixedly mounted on the side plate of the safety clamp and aligned with the light-absorbing block on the wedge connecting rod, the output end of the infrared sensor is connected to the controller, and the output end of the controller is connected to the drive motor.

[0005] The crank-slider mechanism includes an L-shaped crank and a slider. The slider is provided with a groove. One end of the L-shaped crank is fixedly connected to the shaft of the drive motor, and the other end is disposed in the groove. The slider is fixedly connected to the transmission rod.

[0006] The self-testing device for a progressive elevator safety clamp further includes a first fixing plate, a control box, and a battery. The first fixing plate is fixedly installed at the bottom of the safety clamp base plate, the control box, the drive motor, and the battery are fixedly installed on the first fixing plate, and the controller is installed in the control box.

[0007] The first fixing plate is U-shaped, with a first U-shaped bayonet at each end. The first U-shaped bayonet is fixed on the upper and lower sides of the safety clamp base plate and secured by bolts. The control box, drive motor and battery are fixed on the first fixing plate by bolts.

[0008] The self-testing device for a progressive elevator safety clamp also includes an alarm, which is connected to the output of the controller.

[0009] The self-inspection device for a progressive elevator safety clamp further includes a second fixing plate. One end of the second fixing plate is provided with a second U-shaped latch, which is engaged on the inner and outer sides of the safety clamp side plate and fixed by bolts. The other end of the second fixing plate is provided with a U-shaped protrusion, and the infrared sensor is fixed to the second fixing plate by bolts at the bottom of the U-shaped protrusion.

[0010] The drive motor is a 35BYJ46 four-phase five-wire stepper motor with a rated voltage of 12V and a reduction ratio of 1:85.25.

[0011] The top of the transmission rod is also provided with a tray, through which the transmission rod pushes the wedge connecting rod to move upward.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] This invention provides a self-testing device for a progressive elevator safety gear. A motor drives a crank-slider, which in turn drives a transmission rod and a wedge connecting rod in reciprocating motion. An infrared sensor automatically and accurately detects the displacement and reset of the safety gear. Therefore, this self-testing device achieves automatic detection of the elevator safety gear, improving detection efficiency. By collecting and analyzing the status information of the wedge connecting rod in real time, the working status of the safety gear can be accurately determined. When an abnormality is detected in the safety gear, an alarm signal can be issued promptly to remind operators or maintenance personnel to handle the situation, greatly improving detection efficiency. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of a self-testing device for a progressive elevator safety clamp provided in an embodiment of this utility model;

[0015] Figure 2 A three-dimensional structural diagram of a self-testing device for a progressive elevator safety clamp provided for an embodiment of this utility model;

[0016] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0017] Figure 4 This is a schematic diagram of the structure of the first fixing piece in an embodiment of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the second fixing piece in an embodiment of this utility model;

[0019] Figure 6 This is a circuit connection block diagram in an embodiment of the present utility model;

[0020] In the diagram: 1 is the wedge connecting rod, 2 is the drive motor, 3 is the control box, 4 is the first fixing plate, 6 is the storage battery, 7 is the transmission rod, 8 is the tray, 9 is the elevator safety clamp, 10 is the second fixing plate, 11 is the infrared sensor, 12 is the crank-slider mechanism, 13 is the light-absorbing block, 14 is the L-shaped crank, and 15 is the slider. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] like Figures 1-6 As shown, this utility model embodiment provides a self-testing device for a progressive elevator safety clamp, including: a drive motor 2, a crank-slider mechanism 12, a transmission rod 7, a controller, an infrared sensor 11, and a light-absorbing block 13; one end of the transmission rod 7 is located directly below the wedge connecting rod 1, and the other end passes through the safety clamp base plate, and is connected to the drive motor 2 via the crank-slider mechanism 12; the drive motor 2 is used to drive the crank-slider mechanism 12 to move, thereby driving the transmission rod 7 and the wedge connecting rod 1 to reciprocate along the axial direction; the infrared sensor 11 is fixedly mounted on the side plate of the safety clamp and aligned with the light-absorbing block 13 on the wedge connecting rod 1, the output end of the infrared sensor 11 is connected to the controller, and the output end of the controller is connected to the drive motor 2.

[0023] like Figure 3 As shown, in this embodiment, the crank-slider mechanism 12 includes an L-shaped crank 14 and a slider 15. The slider 15 is provided with a sliding groove. One end of the L-shaped crank 14 is fixedly connected to the shaft of the drive motor 2, and the other end is disposed in the sliding groove. The slider 15 is fixedly connected to the transmission rod 7.

[0024] like Figures 1-3As shown, the self-testing device of a progressive elevator safety clamp in this embodiment also includes a first fixing plate 4, a control box 3, and a storage battery 6. The first fixing plate 4 is fixedly installed at the bottom of the safety clamp base plate. The control box 3, the drive motor 2, and the storage battery 6 are fixedly installed on the first fixing plate 4. The controller is installed in the control box 3.

[0025] like Figure 4 As shown, in this embodiment, the first fixing plate 4 is U-shaped, with a first U-shaped bayonet at each end. The first U-shaped bayonet is fixed on the upper and lower sides of the safety clamp base plate and is fixed by bolts. The control box 3, drive motor 2 and battery 6 are fixed on the first fixing plate 4 by bolts.

[0026] Specifically, the first fixing plate 4 and the second fixing plate 10 are made of 2mm thick galvanized steel plate. The first fixing plate 4 is processed into a finished product that fits the drive motor, battery and control box.

[0027] Specifically, in this embodiment, the drive motor 2 is a 12V four-phase five-wire stepper motor 35BYJ46 with a reduction ratio of 1:85.25. The controller can be a microcontroller, which can control the forward and reverse rotation, rotation angle, speed, and start-up time of the drive motor 2. The microcontroller controls the drive motor to rotate 85.25 revolutions in one cycle. After passing through the reduction device, the motor shaft rotates exactly 360 degrees, and the transmission rod 7 completes one reciprocating motion.

[0028] Furthermore, the self-testing device for a progressive elevator safety clamp in this embodiment also includes a second fixing plate 10, and the infrared sensor 11 is fixed to the side plate of the safety clamp via the second fixing plate. Specifically, as shown... Figure 5 As shown, one end of the second fixing plate 10 is provided with a second U-shaped bayonet, which is locked on the inner and outer sides of the safety clamp side plate and fixed by bolts 5. The other end of the second fixing plate 10 is provided with a U-shaped protrusion, and the infrared sensor 11 is fixed on the second fixing plate 10 by bolts at the bottom of the U-shaped protrusion.

[0029] Furthermore, the self-testing device for a progressive elevator safety clamp in this embodiment also includes an alarm, which is connected to the output terminal of the controller. The alarm uses a high-power honeycomb siren to ensure that the alarm sound can be heard inside the elevator car. In addition, the battery 6 provides power to the self-testing device, enabling it to complete the self-testing process even in the event of a power outage, while ensuring that the battery power will not be lost for 30 days when the device is not in operation; when the battery is fully charged, it can provide the power required for no less than 12 self-tests of the device.

[0030] Furthermore, in this embodiment of a self-testing device for a progressive elevator safety clamp, a tray 8 is also provided on the top of the transmission rod 7, and the transmission rod 7 pushes the wedge connecting rod 1 upward through the tray 8.

[0031] Furthermore, in this embodiment, the safety clamp base plate is provided with a through hole for the transmission rod 7 to pass through. The position of the through hole is such that the center of the transmission rod 7 and the wedge connecting rod 1 are aligned. In the non-self-test state, a 1mm gap is left between the transmission rod 7 and the wedge connecting rod 1 to prevent the device from affecting the normal use of the safety clamp.

[0032] The working principle of this utility model is as follows: After the self-test begins, the controller controls the drive motor 2 to rotate. The drive motor 2 converts the rotational motion of the motor shaft into the reciprocating motion of the transmission rod 7 through the crank-slider structure 12. When the sensing rod 7 moves upward, it drives the wedge connecting rod 1 to move upward. The light-absorbing block 13 moves upward with the wedge connecting rod 1. At this time, the reflection data received by the infrared sensor changes, and the alarm starts the self-test alarm. As the self-test process ends, the drive motor 2 drives the transmission rod 7 to move downward. The light-absorbing block 13 moves downward with the wedge connecting rod 1 and returns to its original position. The data received by the infrared sensor 11 returns to its original value, and the alarm stops the self-test alarm. If the data received by the infrared sensor 11 does not change or fluctuate after the self-test begins, or if the data received by the infrared sensor 11 does not recover to its pre-self-test value at the end of the self-test, it indicates a safety clamp malfunction, and the alarm starts the malfunction alarm.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A self-testing device for a progressive elevator safety clamp, characterized in that, include: The system includes a drive motor (2), a crank-slider mechanism (12), a transmission rod (7), a controller, an infrared sensor (11), and a light-absorbing block (13). One end of the transmission rod (7) is located directly below the wedge connecting rod (1), and the other end passes through the bottom plate of the safety clamp. It is connected to the drive motor (2) via the crank-slider mechanism (12). The drive motor (2) is used to drive the crank-slider mechanism (12) to move, thereby driving the transmission rod (7) and the wedge connecting rod (1) to reciprocate along the axial direction. The infrared sensor (11) is fixedly mounted on the side plate of the safety clamp and aligned with the light-absorbing block (13) on the wedge connecting rod (1). The output end of the infrared sensor (11) is connected to the controller, and the output end of the controller is connected to the drive motor (2).

2. The self-testing device for a progressive elevator safety clamp according to claim 1, characterized in that, The crank-slider mechanism (12) includes an L-shaped crank (14) and a slider (15). The slider (15) is provided with a groove. One end of the L-shaped crank (14) is fixedly connected to the shaft of the drive motor (2), and the other end is provided in the groove. The slider (15) is fixedly connected to the transmission rod (7).

3. The self-testing device for a progressive elevator safety clamp according to claim 1, characterized in that, It also includes a first fixing plate (4), a control box (3), and a storage battery (6). The first fixing plate (4) is fixedly installed at the bottom of the safety clamp base plate. The control box (3), the drive motor (2), and the storage battery (6) are fixedly installed on the first fixing plate (4). The controller is installed in the control box (3).

4. The self-testing device for a progressive elevator safety clamp according to claim 3, characterized in that, The first fixing plate (4) is U-shaped, with a first U-shaped bayonet at each end. The first U-shaped bayonet is fixed on the upper and lower sides of the safety clamp base plate and is fixed by bolts. The control box (3), drive motor (2) and battery (6) are fixed on the first fixing plate (4) by bolts.

5. The self-testing device for a progressive elevator safety clamp according to claim 1, characterized in that, It also includes an alarm, which is connected to the output of the controller.

6. The self-testing device for a progressive elevator safety clamp according to claim 1, characterized in that, It also includes a second fixing plate (10), one end of which is provided with a second U-shaped bayonet. The second U-shaped bayonet is fixed on the inner and outer sides of the safety clamp side plate and is fixed by bolts (5). The other end of the second fixing plate (10) is provided with a U-shaped protrusion. The infrared sensor (11) is fixed on the second fixing plate (10) by bolts at the bottom of the U-shaped protrusion.

7. The self-testing device for a progressive elevator safety clamp according to claim 1, characterized in that, The drive motor (2) is a 35BYJ46 four-phase five-wire stepper motor with a rated voltage of 12V and a reduction ratio of 1:85.

25.

8. The self-testing device for a progressive elevator safety clamp according to claim 1, characterized in that, The top of the transmission rod (7) is also provided with a tray (8), and the transmission rod (7) pushes the wedge connecting rod (1) upward through the tray (8).

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