42results about How to "Large loading force" patented technology

The invention discloses an industrial CT scanning test system, which comprises a test base, a multi-axis movement rotation table, a ray generation device, an image acquisition device, a fluid pressure loading device and a control device, wherein the multi-axis movement rotation table, the ray generation device, the image acquisition device and the fluid pressure loading device are supported on the test base. According to the present invention, the industrial CT scanning test system uses the fluid pressure loading device so as to reduce the self-weight of the loading device as much as possible and provide the high loading force, such that the requirements of most of the rock material deformation and failure tests can be met; the loading cylinder of the loading device performs the real-time loading on the sample on the sample table of the multi-axis movement rotation table, such that the loading force applied on the rock sample by the loading cylinder can be real-timely regulated according to the test requirements so as to improve the test efficiency; and according to the number of the arranged loading cylinders, the applying of the multi-direction loading force on the sample can be achieved.

The bowl-type medium speed coal mill includes a coal shoot, a separator cap, an inner cone, a separator, a vane wheel unit, a speed reducer, an exhaust valve unit, a door regulator, a Venturi, a side machine body, a milling roll unit, a milling bowl unit, a sealed air manifold and a coal gangue exhaust port. The variable loading spring unit for controlling the loading force is fixed on the separator and connected via pull rod screw to the milling roll unit. The bowl-type medium speed coal mill has high reliability.

The invention discloses a double-vibration-table connection structure comprising a connecting panel, connecting bases and a force transferring structure. The connecting panel is provided with a bolt hole for being connected with a test piece. The upper ends of the two connecting bases are both fixedly connected with the lower side surface of the connecting panel. The connecting bases are provided with connecting holes for being connected with the vibration tables. The side surfaces of the two connecting bases are fixedly connected via the force transferring structure. The upper side surface of the force transferring structure is fixedly connected with the lower side surface of the connecting panel. The double-vibration-table connection structure is used as a connection structure for connecting the vibration tables with the test piece by means of the connecting panel, the connecting bases and the force transferring structure, and can apply the capability of the two vibration tables to the same test piece as a mean for transferring vibration excitation, thereby enhancing the loading capacity of a vibration test.

The invention discloses a system and a method for accurate positioning control under the overweight environment. The system for accurate positioning control comprises a driving unit, an industrial personal computer, a magnetic grid sensor and a motion controller, wherein the driving unit comprises a servo motor, a servo actuator and a rotary transformer. When the span of a controlled moving support is small, one set of driving unit is used for performing single-axis positioning control on the controlled moving support; and when the span of a moved support is overlarge, two sets of driving units are adopted for synchronously driving two sides of the controlled moving support to perform double-axis positioning control. The system is high in positioning accuracy and repeatability precision, has large loading capacity and is suitable for accurate positioning of the large-range controlled moving support under the overweight environment. Under a 100g of centrifugal field, the positioning accuracy of the system is superior to 0.2mm, and the largest bearing force exceeds 18000N. For achieving double-axis positioning control under the high centrifugal field, two axes are regarded as the same axis for performing synchronous control, and reliability and safety of the system are improved.

The invention relates to a testing device of a rock-soil body in-situ strength bearing plate and a usage method of the testing device. The testing device comprises a PC, a tester, a power mechanism, a bearing unit, a data collection and feedback unit and an assisted supporting structure; the PC and the tester are connected with each other, and a control module in the tester is a single chip microcomputer system; the power mechanism consists of a power generator, a motor driver, a moment motor, a speed reducer, a coupling and a jack; the bearing unit consists of a stress transmitting pillar and a bearing plate; the data collection and feedback unit is mainly provided with a rotary encoder and a pressure sensor. The device is assembled into a whole in a buckling manner, the rigid loading requirement needed by testing can be guaranteed; and in moving, the testing device can be conveniently moved and transported after being disassembled into small units. The usage method can be controlled by a program online or offline, the testing mode can be selected from a time mode, a displacement mode and a pressure bearing mode. The testing device and the usage method have the advantages that the mode switching is flexible, the testing process, data sampling and storage are automatic, and the like, and the testing efficiency and the quality reliability of testing data can be improved.

A test device for the vertical static load test of a single pile under the condition of stable pressurized water. A model box is laid with soil in the box to simulate a site, and a test single pile is buried in the soil in the box. The vertical loading system includes a reaction force frame, a lever , pile driver and weights, the hydraulic loading system includes a water pump, an inlet anti-filter cartridge, an outlet anti-filter cartridge, a force transfer water bag and a counter-pressure plate, the water outlet of the pump is connected to the anti-filter cartridge, and the imported anti-filter cartridge is installed in the model. On the water inlet of the wall of the box, the outlet anti-filter cartridge is installed on the water outlet of the wall of the model box, the top surface of the soil body in the box is laid with a force-transmitting water bag, and a counter-pressure plate is set on the force-transmitting water bag, and the counter-pressure plate is divided into left and right. Some of them are connected to the rotating shaft, and the left and right counter-pressure plates are connected by a screw cap, and the screw cap passes through the test single pile; the data acquisition system includes a displacement meter, which is located on the top of the test single pile, and the displacement meter is connected with the data acquisition instrument. . The invention has good effect, convenient operation, low cost and short time.

The invention discloses a device and a method for testing the elongation and the pull-apart of an integral rubber track in a horizontal state. The device comprises a platform, a support seat, a horizontal loading hydraulic cylinder, a horizontal support pillar, a cross beam box body, a simulation driving wheel device I, a simulation driving wheel device II, a load sensor, a displacement sensor and a controller, wherein the support seat is arranged at one side of the platform; the horizontal loading hydraulic cylinder is arranged at the other side of the platform; the horizontal support pillar is fixedly arranged between the support seat and the horizontal loading hydraulic cylinder; the cross beam box body can move back and forth along the horizontal support pillar and is fixed on the horizontal support pillar in a fastening way; the load sensor is used for measuring the load loaded by the horizontal loading hydraulic cylinder; the displacement sensor is used for measuring the displacement loaded by the horizontal loading hydraulic cylinder; the simulation driving wheel device I and the simulation driving wheel device II are respectively capable of moving along the horizontal direction by the cross beam box body and the horizontal loading hydraulic cylinder; the controller is connected with the load sensor, the displacement sensor and the horizontal loading hydraulic cylinder in an electrical control way. After the device and the method are adopted, the development period of the rubber track is shortened, and the experimental cost of the rubber track is reduced.

The invention discloses a rotary table structure and a crane having the rotary table structure, which belongs to the field of marine engineering equipment. The rotary table structure comprises a main body case; the interior of the main body case is provided with at least two I-shaped beams used for fixing an A-shaped rack, a barrel front plate and a barrel rear plate; each I-shaped beam comprises an upper wing plate, a lower wing plate and a web, wherein the upper wing plate and the lower wing plate are parallel, and the web is arranged between the upper wing plate and the lower wing plate; all the webs are arranged in the main body case along axis directions of four legs of the A-shaped rack, and two ends of the barrel front plate and two ends of the barrel rear plate are respectively fixed on the webs; the crane comprises the rotary table structure and the A-shaped rack. According to the invention, lightweight design of the rotary table structure is realized, the I-shaped beams replace a case-type beam and are used as main bearing and supporting structures for the rotary table structure, and since the weight of the I-shaped beams is smaller than the weight of the case-type beam, the weight of the rotary table structure is reduced; since the weight of the rotary table structure is reduced, the crane using the rotary table structure has reduced weight.

The invention discloses a coating bonding force double-lever measuring device and a measuring method thereof, which include a bracket, a first lever mechanism and a second lever mechanism; the first lever mechanism includes a first screw rod and a beam, and the beam is connected with a second lever mechanism. A base, one side of the first screw rod is provided with a starting point mark and a travel code, and the other side of the first screw rod is provided with a first pull rod; the second lever mechanism includes a second lever and a second pull rod, and the second lever is vertically A fixed seat is provided to the direction, a probe is installed at the lower end of the fixed seat, and a horizontal movement mechanism is arranged below the probe. The invention provides the probe with a linearly increasing load through the double lever system, and moves the probe until the coating cracks and exposes the substrate, and then observes the position of the coating crack, and determines the corresponding load to measure the interface bonding force ; At the same time, the structure is simple and the cost is lower; the operation process is simple during measurement, which is beneficial to the operation of ordinary personnel, and the display effect is obvious.