Automatic positioning control device for belt mine car

Abstract

The utility model belongs to the field of automatic industrial control, and particularly relates to an automatic positioning control device for a belt mine car, which is characterized by comprising a programmable logic controller (PLC), a human-computer interaction interface, a level gage, a travel switch, an encoder, a band-type brake relay, a band-type brake, a servo driver and a servo motor, the PLC is respectively connected with the man-machine interaction interface, the level gage, the travel switch, the encoder, the band-type brake relay and the servo driver, the band-type brake relay is connected with the band-type brake, the servo driver is connected with the servo motor, and the band-type brake is arranged on the servo motor; the two travel switches are located at the two ends of the belt mine car respectively. The encoder is arranged on a driving wheel of the belt mine car; and the four level gauges are respectively arranged in the stock bins below the track of the belt mine car. The utility model has the beneficial effects that the problems of inaccurate position of the mine car, long adjustment time and the like caused by manual operation are solved, the potential safety hazard is eliminated, the production efficiency is improved, and the aims of reducing cost and increasing efficiency of enterprises are fulfilled.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automation industry control, especially relates to a belt mine car automatic positioning control device. BACKGROUND

[0002] The belt mine car is also called mobile lifting belt conveyor, is widely used in the refractory industry, and is mostly used for loading materials into a row of multiple material bins. Taking a four-bin raw material tank production line as an example, an operator needs to go to the top of the raw material tank to manually operate the box when unloading, and the mine car needs to be advanced to the unloading port, and the position of the mine car needs to be adjusted before unloading. The four-bin raw material tank is unloaded into each bin in turn according to the count value of the material level.

[0003] The operator manually operates the belt mine car to advance and retreat, and when the mine car reaches the unloading port, the mine car is manually stopped and fixed in position by using a triangular wooden wedge. This operation method not only wastes human resources, but also needs to be adjusted multiple times to accurately position the unloading port, which takes a long time and is not efficient. In addition, there is a safety hazard when the wooden wedge is installed. Therefore, it is necessary to use a new type of mine car automatic positioning control device to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims to provide a belt mine car automatic positioning control device, overcome the deficiencies of the prior art, design an automatic positioning system for the belt mine car, solve the problem of inaccurate manual operation of the mine car position and long adjustment time, eliminate safety hazards, and achieve the goal of reducing costs and increasing efficiency.

[0005] To achieve the above-mentioned purpose, the utility model realizes the following technical scheme:

[0006] A belt mine car automatic positioning control device, comprising a PLC controller, a man-machine interface, a material level meter, a travel switch, an encoder, a brake clutch relay, a brake clutch, a digital input / output module, an RS-485 communication interface, a servo driver and a servo motor, the PLC controller is connected with the man-machine interface, the travel switch, the encoder, the digital input / output module, the RS-485 communication interface, the brake clutch relay and the servo driver, the brake clutch relay is connected with the brake clutch, the servo driver is connected with the servo motor, and the brake clutch is arranged on the servo motor; the travel switch is two, and is arranged at both ends of the belt mine car; the encoder is arranged on the driving wheel of the belt mine car; the material level meter is four, and is arranged in the material bin below the track of the belt mine car, and the digital input / output module is connected with the four material level meters.

[0007] Further, the material level meter is a radar material level meter.

[0008] Furthermore, the brake is a servo brake.

[0009] Furthermore, the top of the hopper is provided with a feed inlet, and a funnel is provided on the feed inlet.

[0010] Furthermore, the limit switch is an automatic reset single roller limit switch.

[0011] Furthermore, the encoder is an absolute rotary encoder.

[0012] Furthermore, the human-computer interaction interface is a touch screen interface.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1) This utility model solves the problems of inaccurate positioning of mine cars by manual operation and long adjustment time by independently designing an automatic positioning system for belt conveyor mine cars, thereby eliminating safety hazards and improving production efficiency;

[0015] 2) Belt conveyor mining cars can quickly switch between raw material tank unloading and reduce the time for adjusting the position of mining cars. After the optimization of human resources, the number of employees can be reduced by 4, thus achieving the company's goal of reducing costs and increasing efficiency. Attached Figure Description

[0016] Figure 1 This is a block diagram illustrating the control principle of an embodiment of this utility model;

[0017] Figure 2 This is a production layout diagram of an embodiment of this utility model;

[0018] Figure 3 yes Figure 2 Top view.

[0019] In the diagram: 1-First limit switch, 2-Encoder, 3-Second limit switch, 4-Level gauge, 5-Hopper, 6-Function hopper, 7-Belt conveyor car, 8-Belt conveyor car track. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the specific embodiments used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some embodiments of this utility model. For those skilled in the art, other specific embodiments can be obtained based on these specific embodiments without creative effort.

[0022] The components of the present invention described and shown in the specific embodiments herein can be arranged and designed in numerous different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0023] See Figures 1-3 This is a schematic diagram of an embodiment of the automatic positioning control device for belt conveyor mine cars according to this utility model. It includes a PLC controller, a human-machine interface, level gauges, limit switches, an encoder, a brake relay, a brake, a digital input / output module, an RS-485 communication interface, a servo driver, and a servo motor. The PLC controller is connected to the human-machine interface, limit switches, encoder, digital input / output module, RS-485 communication interface, brake relay, and servo driver. The brake relay is connected to the brake, and the servo driver is connected to the servo motor, which has a brake. There are two limit switches, located at both ends of the belt conveyor mine car 7, namely, the first limit switch 1 and the second limit switch 3. The encoder 2 is installed on the drive wheel of the belt conveyor mine car 7. There are four level gauges 4, each installed in the hopper 5 below the belt conveyor mine car track 8, and the digital input / output module is connected to each of the four level gauges.

[0024] In this embodiment, the level gauge is a radar level gauge. The brake is a servo brake. A feed inlet is located at the top of the hopper 5, and a funnel 6 is provided above the feed inlet to prevent spillage during unloading. The limit switch is an automatic reset single-roller limit switch, which can automatically reset its position without affecting the next trigger. The encoder is an absolute rotary encoder. The human-machine interface is a touchscreen interface.

[0025] In this embodiment, a servo motor with a power of 4KW is installed in the traveling mechanism of the belt conveyor mine car. It has a brake and operates at industrial frequency, with the mine car's forward speed at 1m / s. Limit switch parameters: voltage rating 24V, wiring method is 3-wire shielded cable. Encoder parameters: absolute rotary encoder is selected, connecting shaft opening is 15mm, power supply voltage 10-30V, current signal 4-20mA, protection rating IP65, ambient temperature -40~80℃. Radar level gauge parameters: current signal 4-20mA, a total of 4 level gauges. PLC controller parameters: processor storage capacity 1MB, expansion capacity 4GB; rated load voltage 24V. The human-machine interface includes a PLC program operation screen and fault alarm information. The PLC controller can communicate and exchange data with the main control room via an RS-485 communication interface to automatically position and control the belt conveyor mine car.

[0026] When the conveyor belt mine car 7 moves forward or backward to the position of proximity switch 1, the signal is fed back to the PLC. Upon receiving the command, the PLC outputs a stop signal for the conveyor belt mine car 7, and simultaneously, the mine car motor brake closes. Due to the relatively slow speed of the mine car (1 m / s), this achieves the effect of immediately stopping the conveyor belt mine car when it reaches the designated position. Simultaneously, the encoder position feedback signal is used as an auxiliary judgment method to determine whether the conveyor belt mine car 7 has stopped at the designated position and whether there has been any over-travel. The conveyor belt mine car can be controlled in three modes: local manual, remote manual, and remote automatic. Automatic unloading is used under normal production conditions, remote manual unloading is used under special conditions, and local manual control is used during maintenance.

[0027] When the mine car automatically unloads material, the radar level gauge reports the full level. The PLC then instructs the mine car to move to the next bin (bin 5) for unloading. For example, if the car is unloading from bin 2 and the radar level gauge shows a high level, unloading stops, and the car proceeds sequentially to bin 3 for unloading. After bin 3 is full, it moves to bin 4. After bin 4 is full, the car returns to bin 3, then bin 2, and so on. This control method ensures the shortest possible travel distance for the mine car and maximizes work efficiency.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for automatic positioning of a belt mine car, characterized in that The application relates to a belt mine car control system, which comprises a PLC controller, a man-machine interactive interface, a material level meter, a travel switch, an encoder, a band brake relay, a band brake, a digital quantity input / output module, an RS-485 communication interface, a servo driver and a servo motor, the PLC controller is connected with the man-machine interactive interface, the travel switch, the encoder, the digital quantity input / output module, the RS-485 communication interface, the band brake relay and the servo driver, the band brake relay is connected with the band brake, the servo driver is connected with the servo motor, and the servo motor is provided with the band brake; the travel switch is two and is arranged at two ends of the belt mine car; the encoder is arranged on a driving wheel of the belt mine car; the material level meter is four and is arranged in material bins below a track of the belt mine car; and the digital quantity input / output module is connected with the four material level meters.

2. An automatic positioning control device for a belt mine car according to claim 1, characterized in that, The material level meter is a radar material level meter.

3. The automatic positioning control device for belt mine car according to claim 1, characterized in that, The band brake is a servo band brake.

4. The automatic positioning control device for belt mine car according to claim 1, characterized in that, A feeding port is arranged on the top of the material bin, and a hopper is arranged on the feeding port.

5. The automatic positioning control device for belt mine car according to claim 1, characterized in that, The travel switch is an automatic recovery type single-roller travel switch.

6. The automatic positioning control device for belt mine car according to claim 1, characterized in that, The encoder is an absolute value type rotary encoder.

7. The automatic positioning control device for belt mine car according to claim 1, characterized in that, The man-machine interactive interface is a touch screen interface.

Images