Method and device for limiting torque of hoisting equipment and hoisting equipment
A technology of lifting equipment and torque, applied in the direction of safety devices, transportation and packaging, load hanging components, etc., can solve the problems of inconvenient data transmission and processing, scattered sensor layout, difficult maintenance, etc., to achieve the benefit of accurate Effect of controlling, reducing types and quantities, and saving angle sensors
Active Publication Date: 2015-05-13
SHANTUI CONSTR MASCH CO LTD
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0008] (2) Moment limiter
The traditional torque detection method is difficult to evaluate the dynamic load caused by vibration
[0048] (2) The sensor layout is scattered, which is not convenient for data transmission and processing
Although the price of sensors is currently low, more sensors are not only a matter of cost, but also their maintenance is not easy
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 Construction
[0111] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0112]This technology is suitable for application in rotary lifting equipment such as truck cranes, crawler cranes, tower cranes, marine cranes, and port rotary cranes.
[0113] The following discussion takes truck cranes and tower cranes as examples.
[0114] (1) Truck crane
[0115] truck crane load F applied at the hook.
[0116] The load acts on the turntable as a force F , as shown in the left figure below, this force can be equivalent to a force F 0 and two bending moments M x , M y . The turntable of the crane can be si...
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 method for limiting the torque of hoisting equipment through pure strain measurement. The method comprises the steps of (1) acquiring strains of four points on a hoisting equipment turntable or foundation; (2) respectively calculating eccentric distances delta(x) and delta(y) in the x-axis direction and the y-axis direction according to formulas (1) and (2), and precisely controlling a load according to delta(x) and delta(y), wherein the formulas (1) and (2) are described in the specification. The invention also provides a measurement system for limiting the torque of the hoisting equipment. The measurement system comprises strain gages, a transmission system and a processing system. The invention further provides the hoisting equipment comprising the measurement system. The method, the measurement system and the hoisting equipment have the beneficial effects that (1) consideration for the influence of factors such as an air load and a dynamic load is implemented; (2) sensors are arranged in a relatively concentrated manner, so that transmission and processing of data are facilitated; (3) only are one type of sensors needed; (4) relative positions of the loads can be convenient to acquire.
Description
technical field [0001] The invention relates to a method, a device and a lifting device for moment limitation of a lifting device by using simple strain measurement. Background technique [0002] Traditional lifting equipment measures the weight, moment arm (boom length and elevation angle, sports car position, etc.), multiplies the load and moment arm, compares it with the safe load stored in the processor, and then judges whether it is overloaded. There are many types of sensors, and the layout positions are scattered, which is not convenient for signal transmission and processing. [0003] With the heavy and large scale of equipment, the influence of wind load on equipment cannot be ignored. Although the speed and direction of the wind can be detected by the wind speed sensor, then the impact of the wind load on the equipment can be evaluated through the superposition and experience of the load. However, this method is difficult to accurately evaluate the influence of w...
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 Patent Type & Authority Patents(China)
IPC IPC(8): B66C15/00
Inventor 赵建军李超金轲余丽艳
Owner SHANTUI CONSTR MASCH CO LTD