APC conveying passive mechanical alarm device

Abstract

The utility model relates to an APC conveying passive mechanical alarm device, which comprises a pin, an alarm device and a power supply device, the iron sheet is slidably or fixedly assembled in the cutting groove of the pin; one end of the connecting rod mechanism is connected with the iron sheet, and the other end of the connecting rod mechanism is connected with the counterweight iron sheet; the photoelectric detection switch is fixed between the transportation equipment and the counterweight iron sheet and is used for detecting the position change of the counterweight iron sheet; the mass of the iron sheet is lower than that of the counterweight iron sheet; and the control unit is in communication connection with the photoelectric detection switch and is used for receiving the signal, controlling start and stop of the transportation equipment and triggering an alarm signal. According to the device, a simple and reliable detection system is designed by ingeniously applying the lever principle, and the accurate position of a workpiece can be automatically detected and confirmed when the workpiece is hung into the pin.

Description

Technical Field

[0001] The utility model relates to an alarm device, in particular to an APC conveying passive mechanical alarm device, belonging to the field of transportation equipment. Background Art

[0002] In modern industrial production, efficient material transport systems are crucial for ensuring continuous production line operation. This is especially true in large-scale manufacturing plants, where transport equipment accounts for a significant portion of the production line's operations. Aerial transport systems are widely used because they effectively utilize vertical space and reduce floor space. However, these aerial transport systems, particularly those with hook-type designations, present potential operational challenges. Due to their elevated position, malfunctions can be difficult to detect and inconvenient to repair. Furthermore, if a workpiece falls, the consequences can be devastating: it can damage other equipment within the factory and even bring the production line to a complete standstill. Furthermore, repairing the damage and resuming production incurs significant costs, including both direct repair costs and indirect losses from the downtime.

[0003] While conventional safety measures are currently in place, such as regular inspections and maintenance, these measures often fail to completely prevent accidents. In particular, with overhead pin-type transport equipment, there is a lack of an effective, immediate detection mechanism to confirm that the workpiece is securely engaged with the pin. This means that even under normal operating conditions, there is still a risk of the workpiece falling out due to human negligence or equipment aging. Utility Model Content

[0004] In view of the above situation, the present invention proposes an innovative solution, a mechanical detection and alarm device for use in aerial hook-type transportation equipment.

[0005] This utility model patent is realized through the following technical solutions: an APC conveying passive mechanical alarm device, comprising:

[0006] A pin is used to mount the workpiece, and a cutting groove is provided in the center of the pin;

[0007] An iron sheet, slidably or fixedly assembled in the cutting groove of the pin;

[0008] A connecting rod mechanism, one end of which is connected to the iron sheet, and the other end is connected to the counterweight iron sheet, and the rod body of the connecting rod mechanism rotates around a fixed axis;

[0009] The photoelectric detection switch is fixed between the transport equipment and the counterweight iron sheet and is used to detect the position change of the counterweight iron sheet; the mass of the iron sheet is lower than that of the counterweight iron sheet.

[0010] The control unit is connected to the photoelectric detection switch for receiving signals and controlling the start and stop of the transportation equipment and triggering an alarm signal.

[0011] The technical solutions further defined in this utility model are:

[0012] Furthermore, both ends of the iron sheet extend to the outside of the pin, and the dimensions of both ends of the iron sheet are larger than the dimensions of the cutting groove, which limits the stroke of the iron sheet; the lower end of the iron sheet is connected to the counterweight iron sheet through a connecting rod mechanism to form a lever structure. When the workpiece presses down the iron sheet, the counterweight iron sheet rises, and the electrical signal of the photoelectric detection switch changes to form the first state.

[0013] Furthermore, it also includes a PLC control system, which communicates with the photoelectric detection switch and the control unit, and is used to process the detection signal and execute corresponding control logic, such as stopping the operation of the transportation equipment and issuing an alarm prompt.

[0014] Furthermore, the PLC control system includes a human-machine interface HMI, and the HMI is provided with a reset button for the operator to reset the system after completing the re-hanging of the workpiece.

[0015] Furthermore, the pins are side-mounted pins and upright pins, corresponding to two different types of aerial hook-pin transport equipment.

[0016] The beneficial effects of this utility model include: The device cleverly utilizes the principle of leverage to create a simple and reliable detection system that automatically detects and confirms the correct position of a workpiece when it is hooked onto a pin. If the device detects that a workpiece is not properly hooked, it immediately prevents the transport equipment from starting and alerts on-site personnel to take action through audible and visual alarms. Furthermore, the system integrates with the factory's existing PLC control system, further enhancing safety by ensuring that transport will not proceed until the workpiece is fully secured. This novel design not only improves production efficiency but also significantly reduces the risks associated with dropped workpieces, providing a strong guarantee for safe production in the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a partial diagram of the side-mounted pin of the utility model;

[0019] Figure 3 This is a partial diagram of the upright pin of the utility model;

[0020] Figure 4 This is the principle diagram of the side-mounted pin transportation of the utility model;

[0021] Figure 5 This is a schematic diagram of the upright pin transport principle of the utility model;

[0022] Figure 6 This is a part diagram of the side-mounted pin of the utility model;

[0023] Figure 7 This is a part diagram of the upright pin of the utility model.

[0024] Figure 6 , 7. 1. Workpiece; 2. Press-type detection iron sheet; 3. Connecting rod; 4. Rear-end detection iron sheet; 5. Photoelectric detection switch; 6. Photoelectric laser. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects of the present utility model easier to understand, the following further describes how the present utility model patent is implemented in conjunction with the accompanying drawings:

[0026] An alarm device that detects and prevents accidents. A mechanical detection device is added to the aerial hook-type transport equipment. The lever principle is used for detection. Two alarm devices are designed for the two APC conveying equipment structures used in the factory.

[0027] First: side-hanging pin, cut in the center of the pin, add iron sheet, the iron sheet can move up and down, and the moving distance is limited to avoid errors, the iron sheet is extended to the outside of the pin on both sides, and the iron sheet extended from the bottom of the pin is connected with a connecting rod, and a counterweight heavier than the front end is added to the rear end of the connecting rod. The sinking of the rear end iron sheet drives the rising of the front end iron sheet, and a fixed photoelectric detection switch is placed on the side of the transport equipment to detect the position of the rear end iron sheet. When the workpiece is hung inside the pin - press down the front end iron sheet - drive the connecting rod - the rear end iron sheet rises - the photoelectric detection of the iron sheet - confirm that the workpiece has been hung inside the pin - start the transport equipment - normal operation, if the photoelectric detection of the iron sheet is not - the transport equipment will not start - the robot with the workpiece will stop working, and the fixture will be in a clamped state, which is convenient for personnel to operate and hang the workpiece into the pin for the second time;

[0028] Second: upright pin, the workpiece falls into the interior of the upright pin. Using the same lever principle as mentioned above, the interior of the upright pin is cut and an iron sheet is placed in it. The iron sheet is connected to the connecting rod. The connecting rod is also counterweighted behind the connecting rod, which is heavier than the front iron sheet, so that the front iron sheet rises. The rear iron sheet is also fixed with a photoelectric detection switch on the side. When the workpiece falls into the pin, the front iron sheet is pressed down to drive the connecting rod to raise the rear iron sheet. The photoelectric detection determines whether it falls into place, thereby determining whether the transportation equipment is running and whether the mechanical gripper clamp is released.

[0029] like Figures 1 to 7 As shown, two different pins correspond to two different transport devices, one is a side pendant and the other is an upright pendant. Figure 6 and Figure 7 The 1 represents the workpiece. The inside of the pin is cut, and an iron sheet higher than the pin is placed. Then the iron sheets are connected with a connecting rod. The lever principle is used to control the up and down movement of the rear end iron sheet. The photoelectric detection switch detects whether the workpiece is in place.

[0030] exist Figure 6 If there is no workpiece No. 1, then the No. 2 iron sheet is lighter than the No. 4 iron sheet. The No. 4 iron sheet sinks, causing the No. 3 connecting rod to rise, causing the No. 2 iron sheet to rise and restore to its original state. If the No. 1 workpiece falls into the pin, the weight of the workpiece causes the No. 2 iron sheet to drop, causing the No. 3 connecting rod to drop, causing the No. 4 iron sheet to rise, and photoelectric sensing.

[0031] exist Figure 7 If there is no workpiece No. 1, then the No. 2 iron sheet is lighter than the No. 4 iron sheet. The No. 4 iron sheet sinks, causing the No. 3 connecting rod to rise, causing the No. 2 iron sheet to rise and restore to its original state. If the No. 1 workpiece falls into the pin, the weight of the workpiece causes the No. 2 iron sheet to drop, causing the No. 3 connecting rod to drop, causing the No. 4 iron sheet to rise, and photoelectric sensing.

[0032] To make it easier to identify abnormalities, both types of aerial transport equipment have added alarm devices: when the workpiece has not fallen into place and the PLC has not received the photoelectric sensing signal, the PLC sends a pause command to the robot to stop the robot's movement and prevent the workpiece from falling; at the same time, the PLC sends an alarm signal to the radio to remind the operator to hang the workpiece; at the same time, a reset button is configured on the HMI, and the operator performs the reset operation after hanging the workpiece for secondary confirmation.

Claims

1. An APC conveying passive mechanical alarm device, characterized in that: include: Artifact (1), used to test functionality; A pressing detection iron sheet (2) inside the pin is used to mount a workpiece, and a cutting groove is provided at the center of the pin; An iron sheet, slidably or fixedly assembled in the cutting groove of the pin; A connecting rod mechanism (3), one end of the connecting rod mechanism being connected to the press-type detection iron sheet (2), and the other end being connected to the rear end detection counterweight iron sheet (4), and the rod body of the connecting rod mechanism rotating around a fixed axis; The rear end detection counterweight iron sheet (4) is used to cooperate with the photoelectric detection and utilize the connecting rod to restore the front end iron sheet. The photoelectric detection laser (5) is fixed between the transport equipment and the rear end detection counterweight iron sheet (4) and is used to detect the position change of the rear end detection counterweight iron sheet (4); the mass of the pressing detection iron sheet (2) is lower than that of the rear end detection counterweight iron sheet (4). The photoelectric detection switch (6) detects and receives signals, and is used to receive signals and control the start and stop of the transportation equipment and trigger an alarm signal.

2. The APC conveying passive mechanical alarm device according to claim 1 is characterized in that: The two ends of the iron sheet (2) extend to the outside of the pin, and the dimensions of the two ends of the iron sheet (2) are larger than the dimensions of the cutting groove. The lower end of the iron sheet (2) is connected to the counterweight iron sheet (4) through a connecting rod mechanism (3) to form a lever structure. When the workpiece presses down the iron sheet (2), the counterweight iron sheet (4) rises, and the photoelectric detection switch laser (6) detects it, and the electrical signal of the photoelectric detection switch (5) changes to form a first state.

3. The APC delivery passive mechanical alarm device according to claim 1 or 2, characterized in that: It also includes a PLC control system, which communicates with the photoelectric switch (5) after the photoelectric detection switch (6) detects, and is used to process the detection signal and execute corresponding control logic.

4. The APC conveying passive mechanical alarm device according to claim 3, characterized in that: The PLC control system includes a human-machine interface HMI, and a reset button is provided on the HMI for the operator to reset the system after completing the re-hanging of the workpiece.

5. The APC conveying passive mechanical alarm device according to any one of claims 1 to 4, characterized in that: The pins (1) are side-hanging pins and upright pins, respectively corresponding to two different types of aerial hook-pin transport equipment.

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