A grab control system and apparatus for train bulk material handling

Abstract

The utility model discloses a kind of grab control system and device for train bulk cargo loading and unloading, including PLC controller, hoisting motor module, hoisting drum, first absolute value encoder, opening and closing motor module, opening and closing drum and second absolute value encoder;The PLC controller is used to control hoisting motor module and opening and closing motor module;The hoisting motor module is used to drive hoisting drum;The opening and closing motor module is used to drive opening and closing drum;The first absolute value encoder is used to monitor the height of grab bucket;The second absolute value encoder is used to monitor the opening degree of grab bucket;The input end of the PLC controller connection hoisting motor module, opening and closing motor module, the input end of the hoisting drum of the output end of hoisting motor module is connected, the input end of the first absolute value encoder of the output end of hoisting drum is connected, the output end of the first absolute value encoder is connected the PLC controller;The input end of the opening and closing drum of the output end of opening and closing motor module is connected, the input end of the second absolute value encoder of the output end of opening and closing drum is connected, the output end of the second absolute value encoder is connected the PLC controller.

Description

Technical Field

[0001] This utility model relates to the field of train bulk material loading and unloading equipment, and in particular to a grab bucket control system for train bulk material loading and unloading. Background Technology

[0002] In bulk cargo loading and unloading operations on trains, grab buckets are commonly used tools. Traditional grab bucket control systems have several shortcomings: 1) Low level of automation, requiring a large amount of manual operation, resulting in high labor costs and low loading and unloading efficiency; 2) Poor positioning accuracy, with the grab bucket prone to deviation during grabbing and unloading, affecting the quality of loading and unloading; 3) Low safety, especially in complex operating environments, where the grab bucket is prone to twisting during descent and lifting, leading to safety accidents. Utility Model Content

[0003] The purpose of this utility model is to provide an efficient, accurate, and safe grab control system and grab device for loading and unloading bulk materials on trains, so as to solve the technical problems in the background art.

[0004] The technical solution adopted in this utility model is: This utility model provides a grab bucket control system for loading and unloading bulk materials on trains, including a PLC controller, a hoisting motor module, a hoisting drum, a first absolute encoder, an opening and closing motor module, an opening and closing drum, and a second absolute encoder. The PLC controller is used to control the hoisting motor module and the opening / closing motor module; the hoisting motor module is used to drive the hoisting drum, and the rotation of the hoisting drum realizes the winding and unwinding of the lifting wire rope, thereby controlling the lifting and lowering action of the grab bucket; the opening / closing motor module is used to drive the opening / closing drum, and the rotation of the opening / closing drum realizes the winding and unwinding of the opening / closing wire rope, thereby controlling the opening and closing action of the grab bucket; the first absolute encoder is used to monitor the height of the grab bucket; the second absolute encoder is used to monitor the opening degree of the grab bucket; The PLC controller is connected to the input terminals of the hoisting motor module and the opening and closing motor module. The output terminal of the hoisting motor module is connected to the input terminal of the hoisting drum. The output terminal of the hoisting drum is connected to the input terminal of the first absolute encoder. The output terminal of the first absolute encoder is connected to the PLC controller. The output terminal of the opening and closing motor module is connected to the input terminal of the opening and closing drum, the output terminal of the opening and closing drum is connected to the input terminal of the second absolute encoder, and the output terminal of the second absolute encoder is connected to the PLC controller.

[0005] The beneficial effects of the above solution are as follows: By using a PLC controller, precise control of the hoisting motor module and the opening and closing motor module can be achieved, ensuring that the hoisting and opening / closing wire ropes are subjected to force simultaneously, avoiding single-machine overload and wire rope overload problems; two sets of absolute encoders are used for hoisting and opening / closing to monitor the height and opening degree of the grab bucket respectively, and communicate with the PLC controller in real time to ensure that the controller can monitor the encoder values ​​in real time and achieve precise control.

[0006] As a further improvement to the above technical solution, the rotating shaft of the first absolute encoder is connected to the main shaft of the hoisting drum.

[0007] As a further improvement to the above technical solution, the rotating shaft of the second absolute encoder is connected to the main shaft of the opening and closing drum.

[0008] The beneficial effects of the above solution are: the absolute encoder shaft is connected to the drum spindle, ensuring that the absolute encoder and the drum rotate synchronously.

[0009] As a further improvement to the above technical solution, a first frequency converter is provided between the PLC controller and the hoisting motor module. The input terminal of the first frequency converter is connected to the PLC controller, and the output terminal of the first frequency converter is connected to the input terminal of the hoisting motor module.

[0010] As a further improvement to the above technical solution, a second frequency converter is provided between the PLC controller and the motor switching module. The input terminal of the second frequency converter is connected to the PLC controller, and the output terminal of the second frequency converter is connected to the input terminal of the motor switching module.

[0011] The beneficial effects of the above scheme are: using frequency converters to control the grab bucket lifting motor and the grab bucket opening and closing motor respectively, and connecting the frequency converters to the PLC controller, thereby achieving precise control of the grab bucket by controlling the motor rotation speed.

[0012] The PLC controller simultaneously receives operation instructions from the control console, and sends control instructions to the drive unit based on the analysis results and operation instructions, thereby achieving precise control of the grab bucket.

[0013] As a further improvement to the above technical solution, the PLC controller is model SIMATIC S7-1200.

[0014] The beneficial effects of the above solution are as follows: The SIMATIC S7-1200 features high integration, strong reliability, and flexible programming, along with rich communication interfaces and powerful data processing capabilities. It receives data transmitted from sensor modules, analyzes and processes it using preset algorithms, and sends control commands to the drive unit based on the analysis results, achieving precise control of the grab bucket. For example, when the first absolute encoder indicates that the grab bucket has reached the designated height, the PLC controller instructs the hoisting motor to stop operating.

[0015] This utility model also provides a grab bucket device for loading and unloading bulk materials on trains, comprising: The grab control system; Fighting body; hoisting wire rope; Opening and closing steel wire rope.

[0016] As a further improvement to the above technical solution, the number of lifting wire ropes is four, and the number of opening and closing wire ropes is four.

[0017] The beneficial effects of the above scheme are as follows: The grab bucket adopts an eight-rope design with multi-point anti-sway function, which can effectively prevent the grab bucket from twisting during descent and lifting, and eliminate the possibility of train cars scraping due to the twisting of the grab bucket. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a grab bucket control system for loading and unloading bulk materials on a train, provided in Embodiment 1 of this utility model. Figure 2 This is a schematic diagram of a grab bucket control system for loading and unloading bulk materials on a train, provided in Embodiment 2 of this utility model. Figure 3 This is a schematic diagram of a grab bucket device for loading and unloading bulk materials on a train, provided in Embodiment 3 of this utility model. In the diagram, 1-bucket body; 2-lifting wire rope; 3-opening and closing wire rope; 4-drive shaft; 5-gear coupling; 6-trolley railing. Detailed Implementation Example 1

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of this utility model is provided in conjunction with the embodiments.

[0021] like Figure 1 As shown, a grab control system for loading and unloading bulk materials on trains includes a PLC controller, a hoisting motor module, a hoisting drum, a first absolute encoder, an opening and closing motor module, an opening and closing drum, and a second absolute encoder. The PLC controller controls the hoisting motor module and the opening / closing motor module. The hoisting motor module drives the hoisting drum, which in turn raises and lowers the wire rope, thus controlling the lifting and lowering of the grab bucket. The opening / closing motor module drives the opening / closing drum, which in turn raises and lowers the wire rope, thus controlling the opening and closing of the grab bucket. A first absolute encoder monitors the height of the grab bucket, and a second absolute encoder monitors the opening degree of the grab bucket. The PLC controller is connected to the input terminals of the hoisting motor module and the opening and closing motor module. The output terminal of the hoisting motor module is connected to the input terminal of the hoisting drum. The output terminal of the hoisting drum is connected to the input terminal of the first absolute encoder. The output terminal of the first absolute encoder is connected to the PLC controller. The output of the opening and closing motor module is connected to the input of the opening and closing drum, the output of the opening and closing drum is connected to the input of the second absolute encoder, and the output of the second absolute encoder is connected to the PLC controller.

[0022] In this embodiment, the shaft of the first absolute encoder is connected to the main shaft of the hoisting drum; the shaft of the second absolute encoder is connected to the main shaft of the opening and closing drum.

[0023] In this embodiment, the grab control system for loading and unloading bulk materials from trains does not involve specific algorithms and circuit diagrams; this part is conventional technology in the field.

[0024] The working process of this utility model is as follows: The PLC controller sends commands to the hoisting motor module and the opening / closing motor module. The hoisting motor module drives the hoisting drum to rotate, realizing the winding and unwinding of the lifting wire rope, thereby controlling the lifting and lowering of the grab bucket. The opening / closing motor module drives the opening / closing drum to rotate, realizing the winding and unwinding of the opening / closing wire rope, thereby controlling the opening and closing of the grab bucket. A first absolute encoder is connected to the main shaft of the hoisting drum to monitor the height of the grab bucket in real time and feeds the height data back to the PLC controller. A second absolute encoder is connected to the main shaft of the opening / closing drum to monitor the opening degree of the grab bucket in real time and feeds the opening degree data back to the PLC controller. Based on this feedback data, the PLC controller precisely controls the hoisting motor module and the opening / closing motor module to ensure that the lifting and opening / closing wire ropes are subjected to force simultaneously, avoiding single-machine overload and wire rope overload problems. Example 2

[0025] This embodiment is a further improvement based on Embodiment 1: Specifically, a first frequency converter is provided between the PLC controller and the hoisting motor module. The input terminal of the first frequency converter is connected to the PLC controller, and the output terminal of the first frequency converter is connected to the input terminal of the hoisting motor module.

[0026] Specifically, a second frequency converter is provided between the PLC controller and the motor switching module. The input terminal of the second frequency converter is connected to the PLC controller, and the output terminal of the second frequency converter is connected to the input terminal of the motor switching module.

[0027] Specifically, the PLC controller simultaneously receives operation instructions from the control console, and sends control instructions to the drive device based on the analysis results and operation instructions, thereby achieving precise control of the grab bucket.

[0028] Specifically, the PLC controller model is SIMATIC S7-1200.

[0029] The working process of this utility model is as follows: A first frequency converter is installed between the PLC controller and the hoisting motor module, and a second frequency converter is installed between the PLC controller and the switching motor module. The PLC controller sends control signals to the frequency converters, and the frequency converters control the motor rotation speed to achieve precise control of the grab bucket.

[0030] The PLC controller simultaneously receives operation commands from the control console, analyzes and processes the data fed back from the first and second absolute encoders, and then sends control commands to the drive unit (lifting motor module and opening / closing motor module) based on the analysis results and operation commands to achieve precise control of the grab bucket. Example 3

[0031] A grab bucket device for loading and unloading bulk materials on trains includes a grab bucket control system, a bucket body 1, a lifting wire rope 2, and an opening and closing wire rope 3.

[0032] In this embodiment, there are four hoisting wire ropes 2 and four opening and closing wire ropes 3. The grab bucket adopts an eight-rope design with multi-point anti-sway function, which can effectively prevent the grab bucket from twisting during descent and lifting, and eliminate the occurrence of train bucket entanglement caused by grab bucket twisting.

[0033] The above are merely preferred embodiments of this utility model. It should be noted that, due to the limitations of written expression, and the existence of an infinite number of specific structures, those skilled in the art can make several improvements, modifications, or variations without departing from the principle of this utility model, and can also combine the above-mentioned technical features in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered as protection of this utility model.

Claims

1. A grab bucket control system for loading and unloading bulk materials on trains, characterized in that, It includes a PLC controller, a hoisting motor module, a hoisting drum, a first absolute encoder, an opening and closing motor module, an opening and closing drum, and a second absolute encoder; The PLC controller is used to control the hoisting motor module and the opening / closing motor module; the hoisting motor module is used to drive the hoisting drum, and the rotation of the hoisting drum realizes the winding and unwinding of the lifting wire rope, thereby controlling the lifting and lowering action of the grab bucket; the opening / closing motor module is used to drive the opening / closing drum, and the rotation of the opening / closing drum realizes the winding and unwinding of the opening / closing wire rope, thereby controlling the opening and closing action of the grab bucket; the first absolute encoder is used to monitor the height of the grab bucket; the second absolute encoder is used to monitor the opening degree of the grab bucket; The PLC controller is connected to the input terminals of the hoisting motor module and the opening and closing motor module. The output terminal of the hoisting motor module is connected to the input terminal of the hoisting drum. The output terminal of the hoisting drum is connected to the input terminal of the first absolute encoder. The output terminal of the first absolute encoder is connected to the PLC controller. The output terminal of the opening and closing motor module is connected to the input terminal of the opening and closing drum, the output terminal of the opening and closing drum is connected to the input terminal of the second absolute encoder, and the output terminal of the second absolute encoder is connected to the PLC controller.

2. The grab bucket control system for loading and unloading bulk materials on trains according to claim 1, characterized in that, The shaft of the first absolute encoder is connected to the main shaft of the hoisting drum.

3. The grab bucket control system for loading and unloading bulk materials on trains according to claim 1, characterized in that, The shaft of the second absolute encoder is connected to the main shaft of the opening and closing drum.

4. The grab bucket control system for loading and unloading bulk materials from trains according to claim 1, characterized in that, A first frequency converter is provided between the PLC controller and the hoisting motor module. The input terminal of the first frequency converter is connected to the PLC controller, and the output terminal of the first frequency converter is connected to the input terminal of the hoisting motor module.

5. The grab bucket control system for loading and unloading bulk materials on trains according to claim 1, characterized in that, A second frequency converter is provided between the PLC controller and the motor switching module. The input terminal of the second frequency converter is connected to the PLC controller, and the output terminal of the second frequency converter is connected to the input terminal of the motor switching module.

6. The grab bucket control system for loading and unloading bulk materials on trains according to claim 1, characterized in that, The PLC controller is a SIMATIC S7-1200.

7. A grab bucket device for loading and unloading bulk materials on trains, characterized in that, include; The grab control system according to any one of claims 1 to 6; Fighting body; hoisting wire rope; Opening and closing steel wire rope.

8. The grab bucket device for loading and unloading bulk materials on trains according to claim 7, characterized in that, The number of hoisting wire ropes is four, and the number of opening and closing wire ropes is four.

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