30results about How to "Real-time monitoring of force status" patented technology

The invention provides a construction method of a suspension steel structure. The construction method comprises the steps that according to the preset positions and preset specifications of temporary diagonal tension braces of all floors obtained in advance, cantilever steel beams and the temporary diagonal tension braces of all the floors are installed layer by layer from bottom to top; according to the preset positions and preset specifications of temporary supports obtained in advance, the temporary supports used for supporting a top-layer cantilever steel truss are installed on the top faces of the cantilever steel beams of the topmost floor; the top-layer cantilever steel truss is installed above the cantilever steel beams located on the topmost floor to form a stable frame; hanging columns are installed on the top faces of the cantilever steel beams of all the floors layer by layer from top to bottom; and after all the hanging columns are installed, the temporary supports and the temporary diagonal tension braces are unloaded. According to the construction method, the stress requirement of the hanging columns can be met, construction is safe and controllable, the construction quality and precision can meet the design requirement, the construction efficiency is improved, and the construction cost is reduced.

The invention relates to a suspension clamp with a monitoring function, which comprises a clamp main body, a drawing force sensor device and a temperature sensor device, wherein the drawing force sensor device is arranged on the clamp main body and can monitor the drawing force changes of the suspension clamp in real time; and the temperature sensor device is arranged on the clamp pressing plate of the clamp main body and can monitor wire temperature changes in real time. As the drawing force sensor device is arranged on the suspension clamp, the force condition of the suspension clamp can be monitored in real time; as the temperature sensor device is arranged on the suspension clamp, the temperature changes of a transmission wire can be monitored in real time; as the fixing seat for fixing the temperature sensor has a tubular structure, the sensor can be effectively protected, and the monitored data are more accurate; as a U-type connection plate is arranged, a protection role can be played; and as the structure is reasonable and the mounting is convenient, the practicality and the promotion value are large.

The invention discloses a mining monitoring early warning anchor rod arranged in a rock wall. The anchor rod comprises a body and resistance strain gauges arranged on the body, the body comprises a rod body, a supporting plate and a screw cap, one end of the rod body extends into the rock wall, and the resistance strain gauges are uniformly arranged at the parts, extending into the rock wall, of the rod body; the resistance strain gauges are used for detecting the stress borne by different positions of the rod body, the supporting plate and the screw cap sequentially sleeve the portion, outside the rock wall, of the rod body, and the supporting plate is tightly attached to the rock wall; the screw cap is arranged on the outer side of the supporting plate; due to the screw cap, the rod bodyis fixed to the rock wall, a controller is arranged on the supporting plate, and the controller is connected with the resistance strain gauges. The stress state of the anchor rod can be monitored inreal time; when the anchor rod loses efficacy, people can quickly perceive and take corresponding measures to maintain the stability of a roadway support, casualties caused by improper supporting of aroadway are reduced, the safety production level of a mine is improved, and the safety of coal mine personnel and property is guaranteed.

The invention discloses a carbon fiber composite rod used on intelligent steel strand and a preparation method. The carbon fiber composite rod comprises an optical fiber, and composite carbon fibers are arranged outside the optical fiber. The composite carbon fibers are composed of a plurality of carbon fiber bundles attached with resins and additives. The preparation method comprises steps: firstly, the carbon fiber bundles and the optical fiber are placed respectively; secondly, the carbon fiber bundles and the optical fiber are dragged respectively to go through a synthesis device; thirdly, power-on is carried out, and the device is heated; fourthly, the carbon fiber bundles and the optical fiber are dragged to move. The beneficial effects are that the carbon fiber composite rod has good tensile strength and flexibility and replaces a core cable of a pre-stress steel strand; a light time domain reflectometer is connected, the stress state of the pre-stress steel strand can be monitored in real time, real-time measurement of the pre-stress steel strand is achieved, and the usage safety of the pre-stress steel strand is raised; the carbon fiber composite rod is helpful to achieve real-time monitoring and intelligent management of a whole bridge or building.

The invention discloses a high-frequency vibration fatigue test device for thin-wall blade parts. The high-frequency vibration fatigue test device comprises a signal processing and control device, an ultrasonic vibration device, a special blade clamp device and the like. Wherein the ultrasonic vibration device mainly comprises a vibration table, springs, a base and an ultrasonic vibration mechanism, the ultrasonic vibration mechanism is composed of a flange plate, an ultrasonic transducer and an ultrasonic amplitude-change pole, and in the ultrasonic vibration device, a plurality of springs are designed to assist in supporting the vibration table, so that the stress of the ultrasonic vibration mechanism is reduced; and then the ultrasonic generator provides ultrasonic frequency electric energy for the ultrasonic vibration mechanism, so that the ultrasonic vibration mechanism applies high-frequency vibration in two directions to the vibration table, and high-frequency vibration of the ultrasonic vibration device is realized. The pressure sensor is arranged in the special clamp device for the blade, so that the clamping force of the tenon part of the blade is monitored in real time, the clamping force of the blade in a vibration fatigue test is always in a stable area, the stress state of the tenon root is monitored in real time, and the clamping stability of vibration fatigue of the blade is improved.

The invention relates to an intelligent bi-directional self-resetting friction pendulum support which comprises a bi-directional self-resetting friction pendulum support body and an intelligent sensing system. The bi-directional self-resetting friction pendulum support body comprises an upper support plate, a lower support plate and a support main body, a first stainless steel plate and a second stainless steel plate are arranged on the inner wall of the upper support plate and the lower support plate, first sliding grooves are formed in two sides of the upper support plate, second sliding grooves are formed in two sides of the lower support plate, and a first plane sliding plate, a spherical cap plate, a spherical surface sliding plate, the support main body and a second plane sliding plate are sequentially arranged between the first stainless steel plate and the second stainless steel plate from top to bottom and can slide forwards, backwards, leftwards and rightwards relative to thetwo first sliding grooves and the two second sliding grooves. By the aid of the structure, the support has the advantages that horizontal deformation capacity is high, and the safety of a building structure can be effectively protected.

The invention provides a multi-electrode sensing structure and a method thereof. The multi-electrode sensing structure comprises an FRP (Fiber Reinforce Plastic) rib, anchoring cylinders, a conductiveadhesive and an insulating adhesive, wherein two power supply electrodes are arranged on end faces of two ends of the FRP rib; FRP is divided into N sections and is disconnected and N-1 independent voltage electrodes are arranged; the anchoring cylinders are mounted on the independent voltage electrodes of sections; the anchoring cylinders are used for connecting the adjacent disconnected sections; the insulating adhesive is injected into the anchoring cylinders; the power supply electrodes are connected with a current input system; the independent voltage electrodes of the sections are connected with a voltage output system. When the FRP rib is subjected to an axial force, the FRP rib has axial deformation, the resistance of the FRP rib is changed and the output voltage is changed; the change value of the resistance is calculated through the change value of the current and the voltage, and is converted into section stress of the FRP rib; a stress level of the FRP rib is judged. According to the multi-electrode sensing structure provided by the invention, the FRP rib can express a self bearing force and a four-electrode circuit capable of eliminating contact resistance is formed;meanwhile, the stress state of the FRP rib can be accurately monitored in real time. The system is simple in structure, clear in principle and convenient to implement.

The invention relates to an automatic polishing platform. The automatic polishing platform comprises a polishing head assembly and a platform body. The platform body is provided with a workpiece placement area. The polishing head assembly is close to the workpiece placement area. The automatic polishing platform further comprises a two-dimensional force sensor, a longitudinal push rod device, a transverse push rod device and a controller. The longitudinal push rod device comprises a longitudinal push plate moving in the longitudinal direction. The transverse push rod device comprises a transverse push plate moving in the transverse direction. The pressure value borne by a workpiece is reduced or increased till the pressure value borne by the workpiece is the same as a preset pressure value, the controller stops working of the longitudinal push rod device and the transverse push rod device, and therefore, it is guaranteed that the workpiece is always subjected to the optimal polishing pressure in the polishing process, and the polishing efficiency and the polishing precision are greatly improved.

The invention provides a tower type building deviation rectifying method, and relates to the technical field of building maintenance. The tower type building deviation rectifying method comprises the following implementation steps that (1) foundation beams are arranged, foundation trenches are excavated in the outer sides of the periphery of a tower type building foundation, and the foundation beams of steel structures or reinforced concrete structures which are correspondingly connected with the periphery of a corresponding tower type building foundation structure in a fastened mode are arranged in the foundation trenches; (2) through holes are formed, the multiple through holes which are distributed in the circumferential direction of a tower type building are formed in the tops of beam bodies of the foundation beams, and reaction frames are installed at the positions of the through holes; (3) friction piles are arranged, hydraulic jacks are installed in the reaction frames in the step (2), and the friction piles are pressed into the through holes one by one through the hydraulic jacks; (4) deviation rectifying is conducted, the multiple hydraulic jacks located in the inclination direction of the tower type building are controlled to synchronously and slowly jack, one sides of the foundation beams are slowly lifted under supporting of the multiple friction piles, and then the inclined side of the tower type building is slowly lifted; and (5) reinforcing is conducted. The tower type building deviation rectifying method is simple in construction process, safe and reliable.