Bucket wheel machine control signal wireless transmission system and adapter

Abstract

The utility model belongs to the field of bucket wheel machine control signal transmission, and specifically relates to a bucket wheel machine control signal wireless transmission system and adapter. It includes a bucket wheel machine body, and a signal conversion module and a wireless transceiver module arranged on the bucket wheel machine body; the signal conversion module and the wireless transceiver module are built in the adapter, and the adapter is installed on the bucket wheel machine body. The signal conversion module is used for conversion between the DCS network transmission protocol and the wireless transmission protocol, and the wireless transceiver module is used for transmitting the signal converted by the signal conversion module. Using wireless transmission signals for control instead of reel cables effectively solves a series of problems caused by cable dragging and wear.

Description

Technical Field

[0001] The utility model belongs to the field of bucket wheel machine control signal transmission, and specifically relates to a bucket wheel machine control signal wireless transmission system and an adapter. Background Art

[0002] Bucket wheel machines are mainly used for coal stacking and coal extraction in power plants. During production and operation, bucket wheel machines need to receive instructions from the DCS system and feedback the operating status information to the DCS system in a linked state. Currently, drum cables are mostly used for signal transmission between bucket wheel machines and DCS systems. However, in actual operation of bucket wheel machines, drum cables frequently break or control signals are mis-sent due to dragging, wear, and stretching, which seriously affects the safe and stable operation of bucket wheel machines. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a new technical solution, a wireless transmission system for control signals of a bucket wheel machine, comprising a bucket wheel machine body, and a signal conversion module and a wireless transceiver module arranged on the bucket wheel machine body;

[0004] The signal conversion module is used to convert between the DCS network transmission protocol and the wireless transmission protocol, and the wireless transceiver module is used to transmit the signal converted by the signal conversion module. Using wireless transmission signals to control instead of reel cables effectively solves a series of problems caused by cable dragging and wear.

[0005] Furthermore, the signal conversion module is a 485 signal conversion module;

[0006] The wireless transceiver module is a wireless communication optocoupler, including a first transmitting / receiving end arranged on the bucket wheel machine body and a second receiving / transmitting end arranged on the local control end. The 485 signal converter is connected to the PLC control circuit on the bucket wheel machine body, and the 485 signal conversion module is connected to the first transmitting / receiving end.

[0007] Furthermore, the four I / O ports of the 485 signal converter are connected to the PLC control circuit, the conversion port is connected to the PCBA circuit board, and the PCBA board is connected to the first transmitting / receiving end.

[0008] Furthermore, the wireless communication optocoupler can be replaced with a LORA communication module, which is connected to a radio frequency signal generator. The wireless communication optocoupler uses photoelectric transmission, and in some harsh working sites, a local wireless network can be used instead, such as LORA, ZigBee, etc.

[0009] In order to facilitate the assembly of the wireless transmission system, the utility model also provides an adapter, including an explosion-proof housing, a wiring pin is arranged on the explosion-proof housing, and the 485 signal converter and PCBA circuit board are arranged inside the explosion-proof housing. The explosion-proof housing includes a 485 signal conversion module and a PCBA circuit board, and the wiring pin adopts an explosion-proof connector to avoid accidents caused by circuit sparks. The ear seat or pendant installed on the adapter is convenient for connection with the bucket wheel machine body.

[0010] The beneficial effects of the utility model are as follows: the application solves the technical problems of frequent failures of existing reel cables, such as cable breakage or mis-sending of control signals, due to dragging wear and stretching, etc., through wireless transmission;

[0011] The material cost to solve the problem of a cable drum being broken is about 12,000 yuan for replacing 150 meters of cable drum * 80 yuan / meter, and the labor cost for maintenance is 3 people * 2 days * 300 yuan / day = 1,800 yuan, a total of 13,800 yuan. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an overall schematic diagram of Embodiment 1 of the present utility model;

[0013] Figure 2 This is a schematic diagram of the connection of equipment components in Embodiment 1 of the present utility model;

[0014] Figure 3 It is a rear view schematic diagram of the second embodiment of the utility model;

[0015] Figure 4 It is a three-dimensional schematic diagram of the second embodiment of the utility model.

[0016] In the figure: 1. Bucket wheel excavator body; 2. 485 signal converter; 3. Communication module; 4. RF signal generator; 5. Explosion-proof shell; 6. Ear seat; 7. Signal transmission module. DETAILED DESCRIPTION

[0017] Embodiment 1:

[0018] A wireless transmission system for control signals of a bucket wheel machine comprises a bucket wheel machine body 1 and a signal transmission module 7 arranged at the head of the bucket wheel machine body 1. The signal transmission module 7 comprises a signal conversion module and a wireless transceiver module. The signal conversion module is a 485 signal conversion module, which is used for conversion between a DCS network transmission protocol and a wireless transmission protocol. The wireless transceiver module is used for transmitting signals converted by the signal conversion module. Using wireless transmission signals for control instead of reel cables effectively solves a series of problems caused by cable dragging and wear.

[0019] The wireless transceiver module can be a wireless communication optocoupler, including a first transmitting / receiving end arranged on the bucket wheel machine body 1 and a second receiving / transmitting end arranged on the local control end. The 485 signal converter 2 is connected to the PLC control circuit on the bucket wheel machine body 1, and the 485 signal conversion module is connected to the first transmitting / receiving end.

[0020] The 24 I / O ports of the 485 signal converter are connected to the PLC control circuit, and the conversion port is connected to the PCBA circuit board, and the PCBA board is integrated with the first transmitting / receiving end.

[0021] In this embodiment, the wireless communication optocoupler is replaced by a LORA communication module 3, and the LORA communication module 3 is connected to a radio frequency signal generator 4. The wireless communication optocoupler uses photoelectric transmission, and a local wireless network such as LORA, ZigBee, etc. can be used instead in some harsh working sites.

[0022] Embodiment 2:

[0023] In order to facilitate the assembly of the wireless transmission system, the utility model also provides an adapter, including an explosion-proof housing 5, on which wiring pins are arranged, and the 485 signal converter 2 and PCBA circuit board are arranged inside the explosion-proof housing 5. The explosion-proof housing 5 includes a 485 signal conversion module and a PCBA circuit board, and explosion-proof connectors are used at the wiring pins to avoid accidents caused by circuit sparks. The ear seat 6 installed on the adapter is convenient for connection with the bucket wheel machine body 1.

[0024] The end cover of the shell is arranged at the bottom and is covered by the shell to prevent the interface from being rusted by rain water. The ear seat 6 is located on the side wall of the shell and extends out of the projection outline of the shell for easy installation.

Claims

1. A wireless transmission system for a control signal of a bucket wheel machine, comprising a bucket wheel machine body (1), and a signal conversion module and a wireless transceiver module arranged on the bucket wheel machine body (1); characterized in that: The signal conversion module is used for conversion between DCS network transmission protocol and wireless transmission protocol. The wireless transceiver module is used to transmit the signal converted by the signal conversion module; The signal conversion module is a 485 signal conversion module, and the 485 signal conversion module includes a 485 signal converter (2); The wireless transceiver module is a wireless communication optical coupler, comprising a first transmitting / receiving end arranged on the bucket wheel machine body (1) and a second receiving / transmitting end arranged on the local control end, the 485 signal converter (2) is connected to the PLC control circuit on the bucket wheel machine body (1), and the 485 signal conversion module is connected to the first transmitting / receiving end; The I / O port of the 485 signal converter (2) is connected to the PLC control circuit, the conversion port is connected to the PCBA circuit board, and the PCBA circuit board is connected to the first transmitting / receiving end.

2. A wireless transmission system for control signals of a bucket wheel excavator as claimed in claim 1, characterized in that: The wireless communication optical coupler is replaced with a LORA communication module (3), and the LORA communication module (3) is connected to a radio frequency signal generator (4).

3. An adapter, comprising an explosion-proof housing (5), wherein the explosion-proof housing (5) is provided with wiring pins and fixing ears (6); characterized in that: The explosion-proof housing (5) is provided with the 485 signal converter (2) and PCBA circuit board as described in claim 2 inside.

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