Unlock instant, AI-driven research and patent intelligence for your innovation.

Qunsuo Intelligent Control Cable Force Adjustment Method and Equipment

A technology for intelligent control and adjustment of equipment, applied in the processing of building materials, construction, lifting devices, etc., can solve problems that affect the normal use of the project, adjust the cable force to interrupt traffic, and cannot achieve effective adjustment of structural cable force, etc., so as to be easy to promote Use, avoid oil leakage, and the overall structure is simple and reliable

Active Publication Date: 2021-06-11
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Prestressed structures are widely used in my country, especially long-span bridges, long-span space structures, and long-span concrete structures. Prestressed structures need to adjust the prestress value due to prestressed tendon relaxation, concrete shrinkage and creep, and structural load changes. That is to say, to adjust the cable force. The cables of many cable-stayed bridges, prestressed cable nets, or string trusses are used to adjust the cable force. Adjusting the cable force often interrupts traffic and affects the normal use of the project. Many long-span spatial structures have also experienced the phenomenon of adjusting cable forces during use, and the adjustment of cable forces in spatial structures also requires complex processes, which are more complex than prestressed tension in the construction stage.
[0003] With the application of intelligent systems and the improvement of automatic control technology, it has become possible to realize intelligent control and automatic adjustment of prestressed structural cable forces. However, there is no effective regulating device for prestressed structural cable forces on the market. The control of prestressed cable force in prestressed structures is of great significance to the stability of long-span building structures
[0004] However, the number of slings for long-span building structures is generally large. figure 1 The schematic diagram of the group cable structure in the form of 10 existing cables is provided. Due to the integrity of the structure, the cable forces between the cables are related to each other, that is, when the cable force of one cable is adjusted, the cables of other cables The force will also change accordingly. This linkage relationship between the cable forces of the sling makes it impossible to effectively adjust the cable force of the overall structure by adjusting the cable force alone.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Qunsuo Intelligent Control Cable Force Adjustment Method and Equipment
  • Qunsuo Intelligent Control Cable Force Adjustment Method and Equipment
  • Qunsuo Intelligent Control Cable Force Adjustment Method and Equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] See attached figure 2 to attach Figure 4 , the embodiment of the present invention discloses a group cable intelligent control cable force adjustment method, comprising the following steps:

[0067] S1, the actual cable force value of the end of each drag cable 5 through the pressure sensor 10 F s (n) Collect and compare with the ideal cable force value F 0 (n) Comparing the cable force adjustment difference Δ F(n) ;

[0068] S2. Adjust the cable force difference Δ F(n) middle n The signals are respectively input into the corresponding PID regulator 3 to obtain the control signal S(n) ,control signal S(n) and decoupling matrix D(n) Do matrix multiplication to get the decoupled control signal ;

[0069] S3, the control signal Input to the servo driver 4 at the end of each drag cable 5, the cable force of the drag cable 5 is adjusted through the servo driver 4.

[0070] In order to further optimize the above technical solution, the decoupling matr...

Embodiment 2

[0100] See attached Figure 5 And attached Image 6 , the difference between this embodiment and embodiment 1 is:

[0101] Mechanical adjustment system 1 also includes: external bolt rod 11, hydraulic cylinder 18, piston block 19, servo oil pump 13, adjustable bolt 15, servo motor 16 and twisting gear 17; one end of external bolt rod 11 and the end of drag cable 5 The head is fixed, and the end face of the vertical structure end 6 extends outward; the hydraulic cylinder 18 is coaxially sleeved on the outside of the external bolt rod 11, and the end is fixed to the end face of the structural end 6; the piston block 19 is fixedly sleeved on the external on the bolt rod 11, and is slidably connected inside the hydraulic cylinder 18; the servo oil pump 13 is fixed on the hydraulic cylinder 18, and communicates with the oil chamber formed between the piston block 19 and the structural end 6, and the servo oil pump 13 is electrically connected to the servo driver 4 The adjustable ...

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

No PUM Login to View More

Abstract

The invention discloses a cable force adjustment method and equipment for group cable intelligent control. The cable force adjustment difference ΔF(n) at the end of each cable is collected by a pressure sensor; n in the cable force adjustment difference ΔF(n) is The signals are respectively input into the corresponding PID regulator, and the control signal S(n) is obtained, and the control signal S(n) is multiplied with the decoupling matrix D(n) to obtain the decoupled control signal, and the control signal is input to The servo driver at the end of each cable is used to adjust the tension of the cable through the servo driver. The present invention compares the cable force adjustment difference through the pressure sensor, outputs the corresponding cable force adjustment signal through the PID regulator in the form of matrix decoupling, and adjusts it through the drive of the servo driver, and finally restores all the cable force adjustment differences to Within the specified threshold range, the method is simple and ingenious, and easy to popularize and use.

Description

technical field [0001] The invention relates to the technical field of prestressed structures in civil engineering, and is used for intelligent control and adjustment of prestressed cable forces of prestressed structures, and more specifically relates to a group cable intelligent control cable force adjustment method and equipment. Background technique [0002] Prestressed structures are widely used in my country, especially long-span bridges, long-span space structures, and long-span concrete structures. Prestressed structures need to adjust the prestress value due to prestressed tendon relaxation, concrete shrinkage and creep, and structural load changes. That is to say, to adjust the cable force. The cables of many cable-stayed bridges, prestressed cable nets, or string trusses are used to adjust the cable force. Adjusting the cable force often interrupts traffic and affects the normal use of the project. Many long-span spatial structures have also experienced the phenomeno...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E04G21/12B66F3/24
CPCB66F3/24B66F2700/05E04G21/121E04G2021/128
Inventor 邵彦超曾滨尚仁杰许庆荣华
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP