A control system for detecting whether an aerial chain has been successfully transferred

Abstract

The application belongs to the technical field of conveyor control, and specifically discloses a control system for detecting whether aerial chains are successfully transferred, which comprises a PLC controller and a travel switch, a first photoelectric switch, a second photoelectric switch, a third photoelectric switch and an alarm connected with the PLC controller respectively, wherein the travel switch and the three photoelectric switches are arranged in a transfer area of a spreader; when the spreader is transferred from a first chain to a second chain, the travel switch detects whether a push head on the second chain is in place, the first photoelectric switch detects whether there is a vehicle body in the transfer area, the second photoelectric switch and the third photoelectric switch respectively detect whether there are front and rear stop pawls of the spreader in the transfer area, and the PLC controller judges whether the spreader is successfully transferred in the transfer area according to detection signals of all the switches. The control system for detecting whether aerial chains are successfully transferred can timely respond when the spreader is found to fail in transfer, and thus loss is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of conveyor control, more particularly, to a control system for detecting whether aerial chains are successfully transferred. BACKGROUND

[0002] In the painting workshop of an automobile manufacturing factory, aerial chains are often used to transport a lifting appliance. Due to process requirements or space limitations, the lifting appliance is often directly transferred from one chain to another. Generally, the two chains have built-in encoders and are started by a frequency converter, and closed-loop speed control is performed. In the automatic mode, the chain starting and stopping conditions are consistent, and the synchronization and transfer of the two chains can be achieved through the frequency converter. However, during the actual operation of the chains, errors may occur, and sometimes the transfer may fail. If the system or the staff do not respond in time after the transfer fails, serious losses may be caused. Therefore, a control system for detecting whether the aerial chains are successfully transferred is needed. SUMMARY

[0003] In order to solve the problems in the prior art, the present application provides a control system for detecting whether aerial chains are successfully transferred, so as to solve the problem that the transfer failure of the lifting appliance is not discovered in time in the prior art, thereby causing huge losses.

[0004] As a first aspect of the present application, a control system for detecting whether aerial chains are successfully transferred is provided, the aerial chains comprising a first chain and a second chain arranged adjacent to each other, the first chain and the second chain being rotatable through an optical axis, and the first chain and the second chain each having a push head arranged at intervals thereon for driving a lifting appliance to move, the lifting appliance being connected with a vehicle body, and under normal circumstances, the push head of the chain is located between the front and rear stop pawls of the lifting appliance to drive the lifting appliance to move, the control system for detecting whether the aerial chains are successfully transferred comprising a PLC controller, and a travel switch, a first photoelectric switch, a second photoelectric switch, a third photoelectric switch, and an alarm connected with the PLC controller respectively, the travel switch, the first photoelectric switch, the second photoelectric switch, and the third photoelectric switch being arranged in the transfer area of the lifting appliance.

[0005] When the lifting device is transferred from the first chain to the second chain, the travel switch is used to detect whether the third push head on the second chain moves to the position, the first photoelectric switch is used to detect whether the transfer area has a vehicle body, the second photoelectric switch is used to detect whether the transfer area has the front stop paw of the lifting device, the third photoelectric switch is used to detect whether the transfer area has the rear stop paw of the lifting device, and the PLC controller is used to judge whether the lifting device is successfully transferred in the transfer area according to the detection signals of the travel switch, the first photoelectric switch, the second photoelectric switch and the third photoelectric switch, and controls the alarm to alarm when it is judged that the transfer fails.

[0006] Further, the PLC controller judges whether the lifting device enters the transfer area according to the detection signals of the first photoelectric switch, the second photoelectric switch and the third photoelectric switch, and controls the alarm to alarm when it is judged that the lifting device does not enter the transfer area.

[0007] When the PLC controller judges that the lifting device enters the transfer area, it judges whether the lifting device is successfully transferred in the transfer area according to the detection signal of the travel switch, and controls the alarm to alarm when it is judged that the transfer fails.

[0008] Further, the PLC controller judges whether the lifting device enters the transfer area according to the redundant design, and the judgment results are as follows:

[0009] When the detection signals of the first photoelectric switch, the second photoelectric switch and the third photoelectric switch are all 1, it is judged that the lifting device enters the transfer area.

[0010] When the detection signal of the first photoelectric switch is 1, the detection signal of the second photoelectric switch is 1 and the detection signal of the third photoelectric switch is 0, it is judged that the lifting device enters the transfer area, and the third photoelectric switch fails at this time.

[0011] When the detection signal of the first photoelectric switch is 1, the detection signal of the second photoelectric switch is 0 and the detection signal of the third photoelectric switch is 1, it is judged that the lifting device enters the transfer area, and the second photoelectric switch fails at this time.

[0012] When the detection signal of the first photoelectric switch is 0, the detection signal of the second photoelectric switch is 1 and the detection signal of the third photoelectric switch is 1, it is judged that the lifting device enters the transfer area, and the first photoelectric switch fails at this time.

[0013] When the detection signal of the first photoelectric switch is 1, the detection signal of the second photoelectric switch is 0 and the detection signal of the third photoelectric switch is 0, it is judged that the lifting device does not enter the transfer area, and the first photoelectric switch fails at this time.

[0014] When the detection signal of the first photoelectric switch is 0, the detection signal of the second photoelectric switch is 1, and the detection signal of the third photoelectric switch is 0, it is judged that the lifting appliance has not entered the transfer area, at this time, the second photoelectric switch is out of order;

[0015] When the detection signal of the first photoelectric switch is 0, the detection signal of the second photoelectric switch is 0, and the detection signal of the third photoelectric switch is 1, it is judged that the lifting appliance has not entered the transfer area, at this time, the third photoelectric switch is out of order.

[0016] Further, it further comprises: during the transfer process of the lifting appliance, the second push head on the first chain has been separated from the retreat claw of the lifting appliance, due to inertia, the lifting appliance will continue to advance, and the second chain is always running, when the PLC controller judges that the lifting appliance enters the transfer area according to the detection signals of the first photoelectric switch, the second photoelectric switch and the third photoelectric switch, it represents that the first push head on the second chain moves to the transfer area through the optical axis.

[0017] Further, it further comprises: when the PLC controller judges that the lifting appliance enters the transfer area, if the travel switch is triggered by the third push head on the second chain, the travel switch outputs a detection signal, the PLC controller judges that the lifting appliance successfully transfers in the transfer area, which represents that the first push head on the second chain falls between the front and rear retreat claws of the lifting appliance, and then the first push head drives the lifting appliance to move.

[0018] Further, it further comprises: when the PLC controller judges that the lifting appliance enters the transfer area, if the travel switch is not triggered by the third push head on the second chain, the travel switch will not output a detection signal, the PLC controller judges that the lifting appliance fails to transfer in the transfer area, which represents that the first push head on the second chain cannot enter between the front and rear retreat claws of the lifting appliance, the first push head cannot drive the lifting appliance to move, and the transfer fails, at this time, the PLC controller controls both chains to stop running, and controls the alarm to alarm.

[0019] Further, the distance between the two adjacent push heads on the chain is fixed and greater than the length of the vehicle body, and the length of the vehicle body is greater than the length of the lifting appliance.

[0020] Further, the first photoelectric switch, the second photoelectric switch and the third photoelectric switch are all through-beam photoelectric switches.

[0021] Further, the travel switch, the first photoelectric switch, the second photoelectric switch and the third photoelectric switch are all arranged in the transfer area of the lifting appliance through the bracket.

[0022] Further, the height of the second photoelectric switch is lower than the height of the third photoelectric switch, which ensures that the front stop pawl does not trigger the third photoelectric switch when the lifting tool is running.

[0023] The control system for detecting whether the aerial chain is successfully transferred provided by the application has the following advantages: when it is found that the lifting tool fails to be transferred, a timely response can be made, and no loss will be caused. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application.

[0025] Figure 1 The structural diagram of the aerial chain provided by the application.

[0026] Figure 2 The state diagram of the lifting tool when the aerial chain is successfully transferred on the chain provided by the application.

[0027] Figure 3 The structural diagram of the control system for detecting whether the aerial chain is successfully transferred provided by the application.

[0028] Figure 4 The front view of the application scenario of the control system for detecting whether the aerial chain is successfully transferred provided by the application.

[0029] Figure 5 The right view of the application scenario of the control system for detecting whether the aerial chain is successfully transferred provided by the application.

[0030] Figure 6 The top view of the application scenario of the control system for detecting whether the aerial chain is successfully transferred provided by the application. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the application to achieve the predetermined application purpose, the control system for detecting whether the aerial chain is successfully transferred and its specific implementation, structure, features and effects according to the application are described in detail below in combination with the drawings and preferred embodiments. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments. Based on the embodiments of the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0032] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate for the embodiments of the present invention described herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or apparatuses.

[0033] In the context of this invention, it should be noted that the terms "installed," "connected," and "connected" should be interpreted broadly, unless otherwise specified. For example, a connection can be a fixed connection, a connection via a specific interface, or an indirect connection via an intermediary. Those skilled in the art will understand the specific meanings of these terms in this invention on a case-by-case basis.

[0034] In this embodiment, a control system is provided to detect whether the aerial chain is successfully transferred. Figures 1-4 As shown, the aerial chain includes a first chain 1 and a second chain 2 arranged adjacent to each other, and the first chain 1 and the second chain 2 are both rotated through an optical axis 3. Pushers for driving the spreader 4 to move are arranged at intervals on the first chain 1 and the second chain 2. The spreader 4 is connected to a vehicle body 6. Under normal circumstances, the pusher head of the chain is located between the front stop claw 4.1 and the rear stop claw 4.2 of the spreader 4 to drive the spreader 4 to move. The control system for detecting whether the aerial chain is successfully transferred includes a PLC controller and a travel switch LS1, a first photoelectric switch PH1, a second photoelectric switch PH2, a third photoelectric switch PH3 and an alarm respectively connected to the PLC controller. The travel switch LS1, the first photoelectric switch PH1, the second photoelectric switch PH2 and the third photoelectric switch PH3 are all arranged in the transfer area of ​​the spreader 4;

[0035] When the lifting device 4 is transferred from the first chain 1 to the second chain 2, the travel switch LS1 is used to detect whether the third push head 5.3 on the second chain 2 moves to the position, the first photoelectric switch PH1 is used to detect whether the transfer area has the vehicle body 6, the second photoelectric switch PH2 is used to detect whether the transfer area has the front stop pawl 4.1 of the lifting device 4, the third photoelectric switch PH3 is used to detect whether the transfer area has the rear stop pawl 4.2 of the lifting device 4, and the PLC controller is used to judge whether the lifting device 4 is successfully transferred in the transfer area according to the detection signals of the travel switch LS1, the first photoelectric switch PH1, the second photoelectric switch PH2 and the third photoelectric switch PH3, and control the alarm to alarm when it is judged that the transfer fails.

[0036] Specifically, the PLC controller judges whether the lifting device 4 enters the transfer area according to the detection signals of the first photoelectric switch PH1, the second photoelectric switch PH2 and the third photoelectric switch PH3, and controls the alarm to alarm when it is judged that the transfer area is not entered.

[0037] When the PLC controller judges that the lifting device 4 enters the transfer area, it is judged whether the lifting device 4 is successfully transferred in the transfer area according to the detection signal of the travel switch LS1, and the alarm is controlled to alarm when it is judged that the transfer fails.

[0038] It should be noted that when the lifting device 4 enters the transfer area and is successfully transferred, the first photoelectric switch PH1 detects that there is a vehicle body 6, at this time the swing rod of the travel switch LS1 is also pushed to the position with signal by the third push head 5.3, and the second photoelectric switch PH2 and the third photoelectric switch PH3 also detect the front and rear stop pawls of the lifting device respectively.

[0039] Under normal circumstances, when the first photoelectric switch PH1 has a signal, the second photoelectric switch PH2 and the third photoelectric switch PH3 should have signals at the same time, but in order to prevent the photoelectric switch from malfunctioning and causing unnecessary losses, a redundant design is made to judge whether the lifting device enters the transfer area. The results are as follows in Table 1.

[0040] Table 1

[0041]

[0042] Specifically, the PLC controller judges whether the lifting device 4 enters the transfer area according to the redundant design, and the judgment results are as follows:

[0043] (1) When the detection signals of the first photoelectric switch PH1, the second photoelectric switch PH2 and the third photoelectric switch PH3 are all 1, it is judged that the lifting device 4 enters the transfer area.

[0044] (2) When the detection signal of the first photoelectric switch PH1 is 1, the detection signal of the second photoelectric switch PH2 is 1, and the detection signal of the third photoelectric switch PH3 is 0, it is judged that the spreader 4 enters the transfer area, at this time the third photoelectric switch PH3 is out of order;

[0045] (3) When the detection signal of the first photoelectric switch PH1 is 1, the detection signal of the second photoelectric switch PH2 is 0, and the detection signal of the third photoelectric switch PH3 is 1, it is judged that the spreader 4 enters the transfer area, at this time the second photoelectric switch PH2 is out of order;

[0046] (4) When the detection signal of the first photoelectric switch PH1 is 0, the detection signal of the second photoelectric switch PH2 is 1, and the detection signal of the third photoelectric switch PH3 is 1, it is judged that the spreader 4 enters the transfer area, at this time the first photoelectric switch PH1 is out of order;

[0047] (5) When the detection signal of the first photoelectric switch PH1 is 1, the detection signal of the second photoelectric switch PH2 is 0, and the detection signal of the third photoelectric switch PH3 is 0, it is judged that the spreader 4 does not enter the transfer area, at this time the first photoelectric switch PH1 is out of order;

[0048] (6) When the detection signal of the first photoelectric switch PH1 is 0, the detection signal of the second photoelectric switch PH2 is 1, and the detection signal of the third photoelectric switch PH3 is 0, it is judged that the spreader 4 does not enter the transfer area, at this time the second photoelectric switch PH2 is out of order;

[0049] (7) When the detection signal of the first photoelectric switch PH1 is 0, the detection signal of the second photoelectric switch PH2 is 0, and the detection signal of the third photoelectric switch PH3 is 1, it is judged that the spreader 4 does not enter the transfer area, at this time the third photoelectric switch PH3 is out of order.

[0050] It should be understood that the PLC controller judges whether the spreader 4 enters the transfer area through the signals of the three photoelectric switches, judges whether the photoelectric switch is out of order, and if it is judged that the photoelectric switch is out of order, it will be warned on the visual screen, but will not stop the line, the staff can repair after the factory is off work and the line is stopped, and the production will not be delayed.

[0051] Preferably, during the transfer of the spreader 4, Figure 2As shown, the second push head 5.2 on the first chain 1 has been disengaged from the stop pawl of the hanger 4, and due to inertia, the hanger 4 will continue to move forward, while the second chain 2 is in operation. When the PLC controller determines that the hanger 4 enters the transfer area according to the detection signals of the first photoelectric switch PH1, the second photoelectric switch PH2 and the third photoelectric switch PH3, it means that the first push head 5.1 on the second chain 2 moves to the transfer area through the optical axis 3. When the PLC controller determines that the hanger 4 enters the transfer area, if the travel switch LS1 is triggered by the third push head 5.3 on the second chain 2, the travel switch LS1 outputs a detection signal, and the PLC controller determines that the hanger 4 successfully transfers in the transfer area according to the detection signal output by the travel switch LS1, which means that the first push head 5.1 on the second chain 2 falls between the front stop pawl 4.1 and the rear stop pawl 4.2 of the hanger 4, and then the first push head 5.1 drives the hanger 4 to move.

[0052] Preferably, when the PLC controller determines that the hanger 4 enters the transfer area, if the travel switch LS1 is not triggered by the third push head 5.3 on the second chain 2, the travel switch LS1 will not output a detection signal, and the PLC controller determines that the hanger 4 fails to transfer in the transfer area, which means that the first push head 5.1 on the second chain 2 cannot enter between the front stop pawl 4.1 and the rear stop pawl 4.2 of the hanger 4, and the first push head 5.1 cannot drive the hanger 4 to move, resulting in transfer failure. At this time, the PLC controller controls both chains to stop operation to avoid the collision of the vehicle body and cause huge loss, and triggers an alarm, which needs to be handled immediately by the staff.

[0053] Preferably, the distance between the two adjacent push heads on the chain is fixed and greater than the length of the vehicle body 6, and the length of the vehicle body 6 is greater than the length of the hanger 4.

[0054] Preferably, the first photoelectric switch PH1, the second photoelectric switch PH2 and the third photoelectric switch PH3 are all through-beam photoelectric switches. As shown in the figure, Figures 5-6 The first photoelectric switch PH1, the second photoelectric switch PH2 and the third photoelectric switch PH3 all include a transmitter and a receiver, wherein PH1.T, PH2.T and PH3.T are transmitters, and PH1.R, PH2.R and PH3.R are receivers.

[0055] Preferably, the travel switch LS1, the first photoelectric switch PH1, the second photoelectric switch PH2 and the third photoelectric switch PH3 are all arranged in the transfer area of the hanger 4 through a support.

[0056] It should be noted that because the front and rear stop pawl structures of the lifting tool are different, the second photoelectric switch PH2 and the third photoelectric switch PH3 are not at the same height, the height of the second photoelectric switch PH2 is lower than that of the third photoelectric switch PH3, and it is ensured that the front stop pawl 4.1 will not trigger the third photoelectric switch PH3 when the lifting tool 4 operates.

[0057] The control system for detecting whether the aerial chain is successfully transferred provided by the application judges whether the lifting tool 4 is successfully transferred from one chain to another chain through the travel switch LS1, the first photoelectric switch PH1, the second photoelectric switch PH2 and the third photoelectric switch PH3, and when it is found that the lifting tool 4 fails to be transferred, a reaction can be made in time, and no loss will be caused.

[0058] The above is only a preferred embodiment of the application, and does not limit the application in any form. Although the application has been disclosed as above with the preferred embodiment, it is not intended to limit the application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the technical solution of the application, and the equivalent embodiments with equivalent changes are equivalent to the above. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the application are still within the scope of the technical solution of the application.

Claims

1. A control system for detecting whether an aerial chain is successfully transferred, the aerial chain comprising a first chain (1) and a second chain (2) arranged adjacent to each other, the first chain (1) and the second chain (2) both being rotated via an optical axis (3), the first chain (1) and the second chain (2) both being spaced apart with pushers for driving a sling (4) to move, the sling (4) being connected to a vehicle body (6), and under normal circumstances, the pushers of the chains are located between a front stop claw (4.1) and a rear stop claw (4.2) of the sling (4) to drive the sling (4) to move, characterized in that: The control system for detecting whether the aerial chain has been successfully transferred includes a PLC controller and a travel switch (LS1), a first photoelectric switch (PH1), a second photoelectric switch (PH2), a third photoelectric switch (PH3), and an alarm, each of which is connected to the PLC controller. The travel switch (LS1), the first photoelectric switch (PH1), the second photoelectric switch (PH2), and the third photoelectric switch (PH3) are all arranged in a transfer area of ​​the sling (4); When the sling (4) is transferred from the first chain (1) to the second chain (2), the travel switch (LS1) is used to detect whether the third push head (5.3) on the second chain (2) has moved to its proper position, the first photoelectric switch (PH1) is used to detect whether there is a vehicle body (6) in the transfer area, the second photoelectric switch (PH2) is used to detect whether there is a front stop claw (4.1) of the sling (4) in the transfer area, and the third photoelectric switch (PH3) is used to detect whether there is a rear stop claw (4.2) of the sling (4) in the transfer area, and the PLC controller is used to determine whether the sling (4) has been transferred successfully in the transfer area based on the detection signal of the travel switch (LS1), the detection signal of the first photoelectric switch (PH1), the detection signal of the second photoelectric switch (PH2), and the detection signal of the third photoelectric switch (PH3), and when it is determined that the transfer has failed, the alarm is controlled to sound an alarm.

2. A control system for detecting whether an aerial chain is successfully transferred according to claim 1, characterized in that: The PLC controller determines whether the hanger (4) has entered the transfer hanging area based on the detection signal of the first photoelectric switch (PH1), the detection signal of the second photoelectric switch (PH2), and the detection signal of the third photoelectric switch (PH3), and controls the alarm to sound an alarm when it is determined that the hanger has not entered the transfer hanging area; When the PLC controller determines that the sling (4) has entered the transfer area, it determines whether the sling (4) has been successfully transferred in the transfer area based on the detection signal of the travel switch (LS1); when it is determined that the transfer has failed, it controls the alarm to sound an alarm.

3. A control system for detecting whether an aerial chain is successfully transferred according to claim 2, characterized in that: The PLC controller determines whether the sling (4) enters the transfer area based on the redundant design, and the judgment result is as follows: (1) When the detection signal of the first photoelectric switch (PH1), the detection signal of the second photoelectric switch (PH2), and the detection signal of the third photoelectric switch (PH3) are all 1, it is determined that the sling (4) enters the transfer hanging area; (2) When the detection signal of the first photoelectric switch (PH1) is 1, the detection signal of the second photoelectric switch (PH2) is 1, and the detection signal of the third photoelectric switch (PH3) is 0, it is determined that the spreader (4) has entered the transfer area, and at this time, the third photoelectric switch (PH3) has failed; (3) When the detection signal of the first photoelectric switch (PH1) is 1, the detection signal of the second photoelectric switch (PH2) is 0, and the detection signal of the third photoelectric switch (PH3) is 1, it is determined that the hanger (4) has entered the transfer area, and at this time, the second photoelectric switch (PH2) has failed; (4) When the detection signal of the first photoelectric switch (PH1) is 0, the detection signal of the second photoelectric switch (PH2) is 1, and the detection signal of the third photoelectric switch (PH3) is 1, it is determined that the hanger (4) enters the transfer area, and at this time, the first photoelectric switch (PH1) fails; (5) When the detection signal of the first photoelectric switch (PH1) is 1, the detection signal of the second photoelectric switch (PH2) is 0, and the detection signal of the third photoelectric switch (PH3) is 0, it is determined that the hanger (4) has not entered the transfer area, and at this time, the first photoelectric switch (PH1) has failed; (6) When the detection signal of the first photoelectric switch (PH1) is 0, the detection signal of the second photoelectric switch (PH2) is 1, and the detection signal of the third photoelectric switch (PH3) is 0, it is determined that the spreader (4) has not entered the transfer area, and at this time, the second photoelectric switch (PH2) has failed; (7) When the detection signal of the first photoelectric switch (PH1) is 0, the detection signal of the second photoelectric switch (PH2) is 0, and the detection signal of the third photoelectric switch (PH3) is 1, it is determined that the sling (4) has not entered the transfer area, and at this time, the third photoelectric switch (PH3) has failed.

4. A control system for detecting whether an aerial chain is successfully transferred according to claim 2, characterized in that: Also includes: During the rotation and hanging process of the sling (4), the second pusher (5.2) on the first chain (1) has been separated from the stop claw of the sling (4). Due to inertia, the sling (4) will continue to move forward, and at the same time, the second chain (2) is always running. When the PLC controller determines that the sling (4) has entered the rotation and hanging area based on the detection signal of the first photoelectric switch (PH1), the detection signal of the second photoelectric switch (PH2) and the detection signal of the third photoelectric switch (PH3), it means that the first pusher (5.1) on the second chain (2) has moved to the rotation and hanging area through the optical axis (3).

5. A control system for detecting whether an aerial chain is successfully transferred according to claim 4, characterized in that: Also includes: When the PLC controller determines that the sling (4) enters the transfer area, if the travel switch (LS1) is triggered by the third pusher (5.3) on the second chain (2), the travel switch (LS1) outputs a detection signal, and the PLC controller determines that the sling (4) is successfully transferred in the transfer area based on the detection signal output by the travel switch (LS1), indicating that the first pusher (5.1) on the second chain (2) falls between the front stop claw (4.1) and the rear stop claw (4.2) of the sling (4), and then the first pusher (5.1) drives the sling (4) to move.

6. A control system for detecting whether an aerial chain is successfully transferred according to claim 4, characterized in that: Also includes: When the PLC controller determines that the sling (4) enters the transfer area, if the travel switch (LS1) is not triggered by the third pusher (5.3) on the second chain (2), the travel switch (LS1) will not output a detection signal, and the PLC controller determines that the sling (4) fails to transfer in the transfer area, which means that the first pusher (5.1) on the second chain (2) cannot enter between the front stop claw (4.1) and the rear stop claw (4.2) of the sling (4), and the first pusher (5.1) cannot drive the sling (4) to move, and the transfer fails. At this time, the PLC controller controls both chains to stop running and controls the alarm to sound an alarm.

7. A control system for detecting whether an aerial chain is successfully transferred according to claim 1, characterized in that: The distance between two adjacent pusher heads on the chain is fixed and greater than the length of the vehicle body (6), and the length of the vehicle body (6) is greater than the length of the sling (4).

8. A control system for detecting whether an aerial chain is successfully transferred according to claim 1, characterized in that: The first photoelectric switch (PH1), the second photoelectric switch (PH2) and the third photoelectric switch (PH3) are all opposing photoelectric switches.

9. A control system for detecting whether an aerial chain is successfully transferred according to claim 1, characterized in that: The travel switch (LS1), the first photoelectric switch (PH1), the second photoelectric switch (PH2) and the third photoelectric switch (PH3) are all arranged in the rotation hanging area of ​​the sling (4) through a bracket.

10. A control system for detecting whether an aerial chain is successfully transferred according to claim 1, characterized in that: The height of the second photoelectric switch (PH2) is lower than that of the third photoelectric switch (PH3), ensuring that the front stop claw (4.1) will not trigger the third photoelectric switch (PH3) when the sling (4) is in operation.

Images