Stall protection method for double-tooth-roller crusher
A crusher and double-toothed roller technology, applied in the field of protection, can solve problems such as damage, sacrifice of reaction speed, etc., and achieve the effect of ensuring safety
Active Publication Date: 2020-11-10
TANGSHAN BRANCH COAL SCI ACAD +1
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Although this protection method can avoid false alarms, it sacrifices the reaction sp
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0024] see figure 2 , the present invention arranges a rotational speed sensor at the end of each toothed roller shaft 1, and each rotational speed sensor comprises magnetic induction switch 2 and six magnets 5 that are installed on the end face of toothed roller shaft 1, and these six magnets have the same specification. The magnetic induction switch 2 is installed on the outer cover shell 4 at the end of the toothed roller shaft 1 and corresponds to the circumference where the six magnets are located.
[0025] see figure 1 , the first rotational speed sensor is electrically connected to the first rotational speed measuring and controlling instrument (SSC-2A intelligent rotational speed measuring and controlling instrument), the first rotational speed measuring and controlling instrument is connected to the PLC and the power supply module, and the PLC is connected to the first toothed roller stall warning device and the first toothed roller The drive motor is electrically c...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a stall protection method for a double-tooth-roller crusher. According to the method, the rotating speeds of a first tooth roller and a second tooth roller of the double-tooth-roller crusher are measured through a first rotating speed sensor and a second rotating speed sensor correspondingly, and rotating speed data are transmitted to a first rotating speed measurement andcontrol instrument and a second rotating speed measurement and control instrument correspondingly; the first rotating speed measurement and control instrument and the second rotating speed measurementand control instrument compare the respectively-received rotating speed data with a set rotating speed value lower limit, and if the rotating speed data are lower than the rotating speed value lowerlimit, stall signals corresponding to the tooth rollers are transmitted to a PLC; and the PLC comprehensively judges whether a stall alarm and a shutdown protection signal are output or not accordingto the starting condition of each tooth roller and the received stall signals. Whether the tooth roller stall fault caused by material blockage of the crusher exists or not is comprehensively judged according to the starting conditions of the two tooth rollers and the tooth roller stall signals sent by the two rotating speed measurement and control instruments, the response speed of stall protection can be effectively increased while a false alarm is avoided, and the safety of main components of the crusher is ensured.
Description
technical field [0001] The invention relates to a method for stall protection of a double-toothed roller crusher, which belongs to the technical field of protection. Background technique [0002] The double-toothed roller crusher is usually driven by two motors independently, and the two toothed rollers run at the same time after being started step by step, but they are not forced to run synchronously. Its stall protection system monitors the speed of the crusher toothed roller in real time. When the speed drops below the set value due to material blocking, it will send out a stall alarm signal and stop immediately to effectively protect the main components of the crusher. The stall protection system usually uses two speed sensors to measure the speed of the two toothed rollers respectively. When the crusher is running normally, the speed sensor outputs a continuous pulse signal. When any sensor pulse signal is interrupted, it is judged as a stall and a stall alarm and shut...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B02C4/28B02C23/04
CPCB02C4/28B02C23/04
Inventor 陈洪李朋刘国军陈通纪东东张明远李永志徐佳王志辰
Owner TANGSHAN BRANCH COAL SCI ACAD