38 results about "Force chain" patented technology

The invention relates to a device and a method for measuring force chains of particle deposits, wherein the device for measuring the force chains of the particle deposits comprises a pressure-sensing container, a fluorescence spectrum detector, an air compressor, a semispherical pressure head and a feeding device of the semispherical pressure head; the semispherical pressure head extends into thetransparent pressure-sensing container; the feeding device is connected with the air compressor; the fluorescence spectrum detector is arranged on one side face of the pressure-sensing container; onewall face of the pressure-sensing container corresponds to the fluorescence spectrum detector; a cover of the pressure-sensing container is provided with an excitation light source; and a power source connector is further arranged on the cover. With the adoption of the device and the method provided by the invention, the occurrence of the deposit of particulate matters can be effectively prevented, the transfer manner of the force chains of the particle deposits is clearly understood, and the guidance for how to effectively remove the debris deposited beds from boreholes can be provided.

When activated, a handle assembly selectively allows the door latch of a door of a motor vehicle to be released. The handle assembly includes a base fixedly secured to the door and a handle assembly which in its passive state has minimal to no presence in the opening chain of the door latch. The handle assembly includes a handle strap with a handle grip or activation lever which allows completion of the force chain to the latch, thus selectively allowing desired door opening.

The invention discloses a hydraulic tire curing press with a pull rod locking module. The invention consists of a frame consisting of a lower beam and a supporting part, an upper beam, an upper and lower thermal plate, an opening and closing die cylinder, a central structure and a pressurized structure. The upper beam is driven by the opening and closing die cylinder and has freedom of moving fromthe top to the bottom. An upper die and a lower die are directly arranged between the upper thermal plate and the lower thermal plate and are respectively fixed connected with the upper beam and thelower beam. The pressurized structure consists of a pulling rod, a pressurized splint and a pressurized cylinder. The pulling rod is evenly arranged corresponding to the axle wire of in the tire module. The upper terminal of each pulling rod is fixedly connected with the upper beam and the lower terminal of each pulling rod is fixedly connected with the pressurized plate traveling through the lower beam; the pressurized cylinder is fixed on the bottom of the lower beam and the piston terminal of the cylinder is fixedly connected with the pressurized plate; the pulling rod is arranged with a locking die structure and an adjusting die structure. The invention increases the working precision and reducing the manufacturing cost, at the same time, the invention also has the advantages of avoiding the problem of oil leaking and contamination, being convenient for the cylinder maintenance, simplifying the forcing chain of the locking die force and reducing the manufacturing cost of the curingpress.

The invention belongs to the technical field of granular system power transmission chain identification, and relates to a method for identifying a granular system power transmission chain. The method includes the steps that firstly, a granular system is loaded, and granular system images before and after deformation are collected to be used as an original image and a target image respectively; then, the original image and the target image are analyzed, and after a displacement field and a strain field in the granular system surface of the target image at the corresponding moment are obtained, the stress of each point is obtained according to the strain of each point in the strain field; afterwards, image edge detection is conducted on the target image, granular centroids are identified, the coordinates of the granular centroids and the position coordinates of contact points of all granules are read, a force equilibrium and torque equilibrium equation is established for each granule, and the size and orientation of contact force at different contact points on all the granules are acquired through calculation; at last, the contact force of each granule is drawn, and the graph which is continuously represented by the contact force between adjacent granules is the path of the power transmission chain. The method is simple, scientific in principle, convenient and flexible to use, high in practicability, large in development prospect and wide in applied range.

The invention provides a dynamic force chain observation device of a flexible polishing wear particle group. The dynamic force chain observation device comprises an image processing device and a particle control device. The image processing device comprises a light source generator, a light source collector and a data analyzer. The light source generator is located at the bottommost end of an observation region. The light source transmitted by the light source generator penetrates through a lower polarized light device and points to a particle control device in the observation region composed of the lower polarized light device and an upper polarized light device. The upper surface of the particle control device is covered with a transparent baffle. The light source collector is located over the upper polarized light device. The light source collection view of the light source collector covers the light source transmitted out by the upper polarized light device. The data input end of the data analyzer is connected with the data output end of the light source collector. The data signal output end of the data analyzer is connected with a display screen of the data analyzer. The dynamic force chain observation device has the advantages that the external applying parameters of photoelastic particles can be detected in real time, the motion state of the photoelastic particles can be adjusted through sliding blocks, and simulation of the flexible polishing machining test is achieved.

The invention discloses a grinding particle restraining device for observing a particle force chain. The grinding particle restraining device comprises an upper transparent layer, a lower transparent layer, a middle-layer grinding particle restraining module clamped between the upper transparent layer and the lower transparent layer, a plurality of stress sensors for measuring stress states of grinding particles and a controller, wherein the middle-layer grinding particle restraining module comprises a cavity for containing photoelastic particles, a baffle and a force application mechanism; a gap is formed in the side surface of the cavity; the baffle is mounted at the gap of the cavity; the force application mechanism is arranged at the bottom of the cavity; an extrusion part of the force application mechanism penetrates through a base plate of the cavity and is in contact with the photoelastic particles; the upper transparent plate, the lower transparent plate, the extrusion part of the force application mechanism, the cavity and the baffle form a middle-layer closed containing cavity for containing the photoelastic particles; the middle-layer grinding particle restraining module is provided with the multiple stress sensors; the stress sensors are connected with the signal input end of the controller; the force application mechanism is connected with the signal output end of the controller. The grinding particle restraining device has the beneficial effects that force chain collection aiming at the photoelastic particles is realized, and the shape can be adjusted according to different processing objects.

The invention belongs to the technical field of particle system force chain recognition and relates to a contact force calculating and force chain recognizing method for particles in a three-dimensional particle system. The method comprises the steps of putting balls into a rigid container to form the three-dimensional particle system, utilizing a loading pressure head to pressurize the three-dimensional particle system, collecting an original sequence image and a target sequence image through an XCT scanner, utilizing a digital body related method to analyze the obtained original sequence image and the target sequence image to obtain stress of all points, then performing image edge detection on a target image, recognizing a particle centroid, reading coordinates of the particle centroid and position coordinates of contact points of all particles, establishing an equation set according to balance conditions of all the particles and solving the equation set to obtain magnitude and direction of contact force fi of all the contact point positions on each particle. The method has a simple principle, is convenient and flexible to use and has strong practicability, application environment friendliness and wide market prospect; in addition, required equipment is simple and easy to obtain, and measurement results are accurate.