Control circuit for preventing communication interruption for winery cranes

Abstract

A control circuit for preventing communication interruption for winery cranes comprises a grab bucket plug located on a grab bucket and a lifting hook socket located on a lifting hook, and the grab bucket plug is electrically connected with the lifting hook socket. The grab bucket plug is connected with a power supply circuit, an intermediate relay is arranged between the lifting hook socket and the power supply circuit in series, and a normally open switch of the intermediate relay is connected to the input end of the PLC in series; an absolute value encoder is arranged on the grab bucket working motor, contactor normally-open switches are arranged at the two ends of the absolute value encoder in parallel, and a contactor is arranged at the output end of the PLC. By means of the detection loop, even if the lower hanging grab bucket is frequently replaced by a traveling crane, the problem of communication faults cannot occur, and therefore the problem that the traveling crane frequently reports the communication faults due to the fact that the grab bucket is frequently replaced is solved. According to the utility model, the problem of communication interruption caused by frequent plug replacement can be avoided, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to a communication interruption control circuit, which is applied to the working condition that a crane in a winery frequently replaces an electric grab bucket hanging below. Background Art

[0002] For winery cranes, electric grabs are often hung under the hook to grab brewing materials for transportation and loading and unloading operations. In order to ensure efficient and smooth transportation of brewing materials, cranes often have anti-sway functions and flat digging functions. At this time, the grab will be equipped with an absolute encoder to achieve the flat digging function. In order to ensure work efficiency, the operator will replace the grab without stopping the crane, which will cause communication failure in the crane. The existence of the anti-sway function will make the startup and reset of the variable frequency communication crane take a long time, and frequent replacement will greatly reduce work efficiency. Therefore, once the grab is frequently replaced, the crane communication will be frequently interrupted, which will greatly reduce the work efficiency of the crane.

[0003] Therefore, for this type of crane working scenario, it is particularly important to solve the communication interruption caused by frequent replacement of grab buckets. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to solve the problem of communication interruption caused by frequent replacement of grab buckets of winery cranes. Therefore, the utility model provides a control circuit for preventing communication interruption for winery cranes.

[0005] To solve the above problems, the utility model is implemented through the following technical solutions:

[0006] A control circuit for preventing communication interruption for a winery crane includes a grab plug on a grab and a hook socket on a hook, wherein the grab plug is electrically connected to the hook socket. The grab plug is connected to a power supply circuit, an intermediate relay is arranged in series between the hook socket and the power supply circuit, and a normally open switch of the intermediate relay is connected in series to an input end of a PLC; an absolute value encoder is arranged on a grab working motor, and a normally open switch of a contactor is arranged in parallel at both ends of the absolute value encoder, and the contactor is arranged at an output end of the PLC.

[0007] The grab is an electric grab, which is connected to a power supply circuit, which is connected to AC220V mains electricity; a grab plug is arranged on the electric grab, which is a conductive plug, which is electrically connected to the power supply circuit.

[0008] The hook socket is arranged on the hook, and a conductive plug row is arranged in the grab bucket plug, and the conductive plug row is conductively connected with the conductive plug piece of the grab bucket plug.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the detection circuit set in the utility model will not cause communication failure even if the grab bucket is frequently replaced during driving, thereby solving the problem of frequent communication failure caused by frequent replacement of grab buckets. The utility model can avoid the problem of communication interruption caused by frequent replacement of plugs, greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the principle circuit diagram of the utility model. DETAILED DESCRIPTION

[0011] 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.

[0012] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0013] like Figure 1 As shown, a control circuit for preventing communication interruption for a winery crane includes a grab plug 2 located on the grab and a hook socket 1 located on the hook, and the grab plug 2 is electrically connected to the hook socket 1. The grab plug 2 is connected to the power supply circuit, and an intermediate relay K1 is arranged in series between the hook socket 1 and the power supply circuit, and the intermediate relay normally open switch K1-1 is connected in series to the input end of the PLC; an absolute value encoder is arranged on the grab working motor, and a contactor normally open switch is arranged in parallel at both ends of the absolute value encoder, and the contactor K2 is arranged at the output end of the PLC.

[0014] It should be noted that the grab is an electric grab, which is connected to a power supply circuit when working, and the power supply circuit is connected to AC220V mains electricity. A grab plug 2 is provided on the electric grab, and the grab plug 2 is a conductive plug that is electrically connected to the power supply circuit.

[0015] The hook socket 1 is arranged on the hook, and the hook socket 1 is connected with the grab bucket plug 2. A conductive plug row is arranged in the grab bucket plug 2, and the conductive plug row is conductively connected with the conductive plug of the grab bucket plug 2. When the grab bucket plug 2 is plugged into the hook socket 1, a closed loop is formed.

[0016] The working principle of the utility model is:

[0017] For winery cranes, when an electric grab is hung under the hook, the grab and the hook are generally connected by a plug. In order to avoid communication interruption caused by replacing the plug, the utility model designs a plug loop detection circuit, such as Figure 1 As shown, the plug is used as a "switch" digital signal input to the PLC, and then an intermediate relay K1 is connected. When the plug is connected, the circuit is in the on state, the coil of the intermediate relay K1 is energized, the normally open switch K1-1 of the intermediate relay is closed, the PLC receives the input signal, and the crane works normally; when the plug is disconnected, the circuit is in the open circuit state, the coil of the intermediate relay K1 is de-energized, the normally open switch K1-1 of the intermediate relay is opened, and the PLC does not input the signal, then the PLC outputs a signal to the contactor K2, the contactor is energized, and the normally open switch of the contactor is closed, thereby short-circuiting (shielding) the absolute encoder, and there will be no communication interruption problem, and the crane can be used normally.

[0018] It can be seen that this solution can avoid the communication interruption problem caused by frequent replacement of plugs and greatly improve work efficiency.

[0019] The detection circuit provided in the utility model will not cause communication failure even if the grab bucket under the vehicle is frequently replaced during driving, thus solving the problem of frequent communication failure reports caused by frequent replacement of the grab bucket.

[0020] The above is only a preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims

1. A control circuit for preventing communication interruption for a winery crane, characterized in that: It comprises a grab bucket plug (2) located on the grab bucket and a hook socket (1) located on the hook, wherein the grab bucket plug (2) is electrically connected to the hook socket (1); The grab bucket plug (2) is connected to a power supply circuit, an intermediate relay (K1) is arranged in series between the hook socket (1) and the power supply circuit, and the normally open switch (K1-1) of the intermediate relay is connected in series to the input end of the PLC; an absolute value encoder is arranged on the grab bucket working motor, and a contactor normally open switch is arranged in parallel at both ends of the absolute value encoder, and the contactor (K2) is arranged at the output end of the PLC.

2. A control circuit for preventing communication interruption for a winery crane according to claim 1, characterized in that: The grab is an electric grab, which is connected to a power supply circuit, which is connected to AC220V mains electricity. A grab plug (2) is provided on the electric grab, which is a conductive plug, which is electrically connected to the power supply circuit.

3. A control circuit for preventing communication interruption for a winery crane according to claim 2, characterized in that: The hook socket (1) is arranged on the hook, and a conductive plug row is arranged in the grab bucket plug (2), and the conductive plug row is conductively connected to the conductive plug piece of the grab bucket plug (2).

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