47results about How to "Real-time monitoring of wear and tear" patented technology

The invention discloses a brake cylinder of a hydraulic brake device of a railway vehicle. The brake cylinder comprises a shell component, a disk spring assembly, an indicator assembly, a piston assembly, a push rod assembly and an end cover assembly. The push rod assembly, the piston assembly, the disk spring assembly and the indicator assembly are sequentially installed in a cylindrical hole inside the shell component from front to back, wherein the cylindrical hole is provided with a step, and the axis of the push rod assembly, the axis of the piston assembly, the axis of the disk spring assembly, and the axis of the indicator assembly are the same as the main axis of the shell component. The end cover assembly is installed on the cylindrical step at the front end of the shell component, and the axis of the end cover assembly is the same as the main axis of the shell component. Brake clearances can be automatically compensated by multiple threads. Compared with an existing brake cylinder, the brake cylinder is simple in structure, convenient to machine and assemble, few in movable parts, and high in reliability, has the friction plate and brake disc abrasion monitoring function and the automatic compensation mechanism running real-time monitoring function, and can remotely monitor the working state of the brake cylinder in real time. Manual brake loosening and adjustment can be achieved on the scene through a manual mechanical brake loosening device, and operation is conveniently and quickly conducted.

The embodimentof the invention provides an abrasion monitoring method for a crushing cavity, and belongs to the technical field of monitoring of the operating state of crushing equipment. The abrasionmonitoring method for the crushing cavity comprises the steps that feedback signals having cavity characteristics of the crushing cavity and acquired on all detection nodes located at different positions of the crushing cavity are acquired, and the next step is conducted when the feedback signal meets a first preset monitoring condition; the current detection node is selected, local cavity characteristics of the crushing cavity are determined according to intra-node characteristics between the current detection node and the adjacent detection node, the feedback signal of the current detectionnode and the feedback signal of the adjacent detection node; and when the local cavity characteristics meet a second preset monitoring condition, the second step is conducted again, so that a cyclicmonitoring process is formed. According to the abrasion monitoring method for the crushing cavity, the abrasion condition of a lining plate and the structural shape changes of the crushing cavity aremonitored according to the characteristics at detection points and the local characteristics of the current detection position, the working life of the lining plate can be predicted, and conditions are created for reasonable planning of operation and maintenance of a crushing machine.

The invention provides an ultra-precise three-axis association micro-milling device with micro-tool monitoring capacity, relates to an ultra-precise three-axis association micro-milling device, and aims to solve the problem that in the prior art, no equipment for repairing micro-defects on the surfaces of large-caliber KDP crystal elements exists. A tool moving part wiring board, a tool moving part cushion block and a hand-operated lifting adjustment platform are all fixed to the upper end face of a bottom installation flat board, a tool three-axis association platform is fixed to the tool moving part cushion block, a chip collection assembly is connected with the tool three-axis association platform, a tool microscope moving platform, the hand-operated lifting adjustment platform and a microscope connecting board are sequentially connected from top to bottom, and the microscope connecting plate is connected with the upper end face of the bottom installation flat board. The ultra-precise three-axis association micro-milling device is used for repairing the micro-defects on the surfaces of the large-caliber KDP crystal elements in an ultra-precise mode.

The invention provides a system for safety monitoring control of a crane brake, and belongs to the technical field of crane control. The system comprises a collecting device, a transmitting device, aprogrammable logic controller (PLC), a lifting mechanism and a warming device, wherein the collecting device is used for collecting the amount of compression of a brake spring during brake releasing;the transmitting device is used for transmitting the collected amount of compression of the brake spring during brake releasing, and the elongation of the brake spring during brake contracting to theprogrammable logic controller; the programmable logic controller is used for controlling the lifting mechanism to stop and lift when the amount of compression during brake contracting is equal to thesum of the limit compensation stroke and the lifting height of a push rod, and transmitting a preset warning signal to the warning device; and the warning device is used for warning when a brake pad is seriously worn. The system can monitor the wearing condition of the brake pad of the brake by collecting the amount of compression of the brake spring of the brake, can drive and stop the crane to lift according to the wearing condition of the brake pad, and reminds a worker of timely replacing the brake pad when the wearing condition of the brake pad is serious.

The invention discloses an intelligent control system and method for a brake block combination on a brake. The intelligent control system comprises a temperature detection module, a master controller, a length detection module, an alarming module, a pressure detection module and a display module. The pressure detection module detects the value P of pressure on a slider. The temperature detection module detects the value of temperature at the position, making contact with a brake block, of the lower end of a push rod A, the value of temperature at the position, making contact with the brake block, of the lower end of a push rod B, the value of temperature at the position, making contact with the brake block, of the lower end of a push rod C or the value of temperature at the position, making contact with the brake block, of the lower end of a push rod D. The length detection module detects the values of the gap distances between the portions, corresponding to different length detectors, of the upper end of the brake block and the lower end of the lower portion of a basic frame. The master controller controls the display module and the alarming module to execute relevant operation through internal comparison and calculation. By means of the intelligent control system and method, the temperature and the abrasion degree of the brake block can be monitored in real time in the driving process of a vehicle, and an alarm is given when detected data are abnormal; and a user can be effectively warned about the abnormal condition of the brake block, and the condition that braking loses efficiency is effectively avoided.

The present invention provides an Internet-of-Things-based real-time monitoring system for grounding devices. The operating parameters of the grounding devices are transmitted to a main control chamber. The system comprises a detection information unit and an integrated information platform; the detection information unit transmits the operation parameters to the integrated information platform; the integrated information platform checks and analyzes the obtained operation parameters through a B/S mode network, displays an analysis result through background or a display unit; if the operatingparameters of a certain set of grounding device exceed a set warning threshold value, the integrated information platform performs automatic acousto-optic warning, automatically pops up the information of the grounding device and enables early warning. With the system adopted, a reference basis can be provided for maintenance and maintenance frequency. According to the prior art, a periodic maintenance frequency and other modes are set, and as a result, excessive maintenance will be brought about, and labor cost may be increased; and machine disassembling behaviors during a maintenance processwill cause damage to a machine, and as a result, overall maintenance is disadvantaged.

The invention discloses a dry friction star braking type automatic two-speed planetary speed change box. A high-speed-gear planet row and a low-speed-gear planet row of the dry friction star braking type automatic two-speed planetary speed change box are coaxially arranged in a box body. An input shaft penetrates a front end cover of the box body and is connected with the high-speed-gear planet row and the low-speed-gear planet row. An output shaft penetrates a rear end cover of the box body and is connected with the high-speed-gear planet row and the low-speed-gear planet row. Multiple high-speed-gear star brakes are evenly distributed and installed on the outer side of the front end cover of the box body with the input shaft as the center in the circumferential direction, and the high-speed-gear star brakes are connected with the high-speed-gear planet row. Multiple low-speed-gear star brakes are evenly distributed and installed on the outer side of the rear end cover of the box body with the output shaft as the center in the circumferential direction, and the low-speed-gear star brakes are connected with the low-speed-gear planet row. The dry friction star braking type automatic two-speed planetary speed change box is smaller in axial size and rotational inertia, long in service life, capable of achieving environmental adaptability, lower in cost and energy consumption, higher in transmission efficiency and reliability, and more excellent in performance.

The invention discloses a double-cutter-tower turning center with high-precision stable angle control. The double-cutter-tower turning center with high-precision stable angle control comprises a rack, an angle control mechanism, a tool feeding mechanism and a tool, the tool feeding mechanism is assembled on the rack, one end of the tool feeding mechanism is fixedly connected with the rack, the other end of the tool feeding mechanism is in sliding connection with the rack, the end, away from the acting end, of the tool is connected with the tool feeding mechanism, one end of the angle control mechanism penetrates through the end, away from the acting end, of the tool, and the other end of the angle control mechanism is fixedly connected with the tool feeding mechanism. According to the double-cutter-tower turning center with high-precision stable angle control, the stability in the angle adjusting process can be guaranteed, and meanwhile the effect of highly accurately controlling the angle needing to be adjusted is achieved. Besides, a spare tool is arranged, when workpieces of the same batch and model are machined, the abrasion condition of the tool can be monitored in real time according to the adjustment displacement difference in the tool feeding process, the main tool and the spare tool are switched in time, and it is guaranteed that the whole turning process is conducted smoothly.

The invention provides a reciprocating type mechanical friction interface in-situ information acquisition device, and belongs to the technical field of mechanical friction detection. A reciprocating screw driving method is adopted, and the running speed is stable in the whole process. Since an experimental table is in a reciprocating mode, the speed of points of the friction of a sample to be measured is consistent; a method that a force sensor and acceleration sensor compensate each other is used, so that the precision of a friction force measurement result is very high; a pressure loading mechanism is controlled by a motor screw module, and the force sensor is used for real-time feedback. Before the experiment, the weight of a chuck on the lower part of the force sensor, the sample and the like is eliminated, so accurate loading is achieved. Different friction plates are replaced, so that the friction mechanical characteristics, wear conditions, the temperature and stress change of different sample bodies can be quickly and accurately monitored in real time and detected.