CN201485138U

CN201485138U - Hoister frequency conversion automatic control system for mines

Info

Publication number: CN201485138U
Application number: CN2009202078984U
Authority: CN
Inventors: 姚宏; 杨晓军
Original assignee: SHANGHAI METALLURGY MINE MACHINERY FACTORY
Current assignee: SHANGHAI METALLURGY MINE MACHINERY FACTORY
Priority date: 2009-08-14
Filing date: 2009-08-14
Publication date: 2010-05-26
Anticipated expiration: 2019-08-14

Abstract

The utility model relates to a hoister frequency conversion automatic control system for mines, which comprises a programmable controller, a high voltage frequency conversion controller, a shaft encoder, a pulse counter and a spot operation box platform, wherein the programmable controller is composed of a CPU processing unit and a redundancy CPU unit, two sides of the two parts are respectively connected with a host computer operating unit and the high voltage frequency conversion controller, the shaft encoder, the pulse counter, an input module and an output module are respectively connected with the CPU processing unit, a sensor part is arranged outside the redundancy CPU unit, the spot operation box platform is connected with the programmable controller, and a communication interface between the programmable controller and the host computer operating unit is a two-way redundancy structure. The hoister frequency conversion automatic control system arranges existing structures into compact type modular structures, can realize frequency conversion stepless control, is applicable to hoisters with various types and different control demands, and has the advantages that the system control performance is stable, the reliability and the safety are high, and the system can be remotely controlled and can monitor the operation state.

Description

A kind of mining elevator frequency conversion autonomous cruise speed system

Technical field

The utility model relates to the application engineering of mine hoist control system, specifically a kind of mining elevator frequency conversion autonomous cruise speed system.

Background technology

Mine hoist is one of the key equipment in mining industry field, and its main task is ore, coal, the spoil under the winding shaft, also transports personnel, equipment and material simultaneously, and therefore, mine hoist has higher requirement to its control system.Traditional mine hoist control system mainly adopts relay, contactless switch, general time relay and magnetic amplifier as switching value and analog quantity, and its system reliability is poor, control accuracy is low and hardware connection is numerous and diverse, fault rate is high; If adopt programmable controller (PLC) to replace traditional relay logic control loop, some improved technology are introduced hoister control system, make original control loop can realize intellectuality, can show in real time data again simultaneously, dynamic monitoring etc.; Traditional ac elevator of mine pit electric-control system adopts relay control, fault rate height, maintenance are big, the difficulty of adjusting, poor reliability, by dynamic brake speed closed loop controlling unit, adjustable lock closed loop and the overspeed protection link debug difficulties that magnetic amplifier constitutes, the difficulty that sensitivity out of reach rules require; In addition, if existing a lot of same category of device has all possessed certain advantage, but with the structural unit systematization that is increased, also lacks the certain innovation part in this respect, and control unit can not be applicable to the gig of different model or different demands, and its running state is not good.

The utility model content

At above defective, the utility model provides that a kind of system control performance is stable, reliability and security is high, can rationally carry out the mining elevator frequency conversion autonomous cruise speed system of Long-distance Control and supervision running state, thereby overcome many deficiencies of prior art, and realize the purpose of the stepless control of frequency conversion.

For achieving the above object, the utility model is by the following technical solutions:

A kind of mining elevator frequency conversion autonomous cruise speed system, comprise Programmable Logic Controller, high-pressure frequency-conversion controller, shaft encoder, pulse totalizer and local operation case platform, described Programmable Logic Controller is made up of CPU processing unit and redundant CPU element, the Programmable Logic Controller both sides connect upper computer operating unit and high-pressure frequency-conversion controller respectively, and described shaft encoder, pulse totalizer, load module and output module are connected with the CPU processing unit respectively; Sensor section is arranged on redundant CPU element outside, and redundant CPU element outer end connects A/D unit and D/A unit; Described local operation case platform connects Programmable Logic Controller; Described load module is connected with system switching amount incoming signal circuit, and output module is connected with output switching value circuit and display circuit; The network communication interface of Programmable Logic Controller and long-range upper computer operating unit is the bidirectional redundancy structure.

The beneficial effect of mining elevator frequency conversion autonomous cruise speed system described in the utility model is: existing structure is set to the compact modular construction, can realize the stepless control of frequency conversion, is applicable to the gig that various models, different control require; Have that system control performance is stable, reliability, safe, remote controlled and monitor the advantage of running state; Can realize contact pointless control, critical datas such as control operational process and warning can write down, have functions such as graphic display and report printing.

Description of drawings

With reference to the accompanying drawings the utility model is described in further detail below.

Fig. 1 is that the described mining elevator frequency conversion of the utility model embodiment autonomous cruise speed system is formed scheme drawing;

Fig. 2 is the described mining elevator frequency conversion of a utility model embodiment automatic controlling system schematic diagram.

Among the figure:

1, Programmable Logic Controller; 2, upper computer operating unit; 3, high-pressure frequency-conversion controller; 4, shaft encoder; 5, pulse totalizer; 6, load module; 7, output module; 8, large current sensor; 9, high tension voltage sensor; 10, local operation case platform; 11, A/D unit; 12, D/A unit; 13, CPU processing unit; 14, redundant CPU element.

The specific embodiment

As shown in Figure 1, the described mining elevator frequency conversion of the utility model embodiment autonomous cruise speed system, comprise Programmable Logic Controller 1, high-pressure frequency-conversion controller 3, shaft encoder 4, pulse totalizer 5 and local operation case platform 10, described Programmable Logic Controller 1 is made up of CPU processing unit 13 and redundant CPU element 14, the both sides of this two parts CPU element connect upper computer operating unit 2 and high-pressure frequency-conversion controller 3 respectively, and described shaft encoder 4, pulse totalizer 5, load module 6 and output module 7 are connected with CPU processing unit 13 respectively; Sensor section comprises large current sensor 8 with high tension voltage sensor 9 and be arranged on redundant CPU element 14 outsides, and redundant CPU element 14 outer ends connect A/D unit 11 and D/A unit 12; Described local operation case platform 10 connects Programmable Logic Controller 1; Described load module 6 is connected with system switching amount incoming signal circuit, and output module 7 is connected with output switching value circuit and display circuit.In addition, by rim brake synchro voltage signal, tachogenerator output voltage signal, be provided with the directional interpreting circuit module between pulse totalizer 5 and the S. A. coder 4 and be connected with the mouth of S. A. coder 4 for the sampling of the lift stroke of elevator drum, speed signal; In addition, Programmable Logic Controller 1 is realized network communication with long-range upper computer operating unit 2, and its communication interface is the bidirectional redundancy structure.

As shown in Figure 2, the described mining elevator frequency conversion of the utility model embodiment autonomous cruise speed system, its electrical control technological principle comprises by the PLC control end and connects telework platform, UPS and local operation platform respectively, this PLC control part links to each other with motor frequency conversion control, reaches the drum segment by HYDRAULIC CONTROL SYSTEM through motor-driven, retarder successively again after switching through high pressure.

Claims

1. mining elevator frequency conversion autonomous cruise speed system, comprise Programmable Logic Controller (1), high-pressure frequency-conversion controller (3), shaft encoder (4), pulse totalizer (5) and local operation case platform (10), it is characterized in that: described Programmable Logic Controller (1) is made up of CPU processing unit (13) and redundant CPU element (14), Programmable Logic Controller (1) both sides connect upper computer operating unit (2) and high-pressure frequency-conversion controller (3), described shaft encoder (4) respectively, pulse totalizer (5), load module (6) and output module (7) are connected with CPU processing unit (13) respectively; Described local operation case platform (10) connects Programmable Logic Controller (1), and Programmable Logic Controller (1) is provided with communication interface with long-range upper computer operating unit (2).

2. mining elevator frequency conversion autonomous cruise speed system according to claim 1 is characterized in that: described redundant CPU element (14) outer setting large current sensor (8) and high tension voltage sensor (9).

3. mining elevator frequency conversion autonomous cruise speed system according to claim 1 is characterized in that: described redundant CPU element (14) outer end connects A/D unit (11) and D/A unit (12).

4. mining elevator frequency conversion autonomous cruise speed system according to claim 1 is characterized in that: its communication interface is the bidirectional redundancy structure.