177 results about "Classical mechanics" patented technology

A device and system for improving efficiency of subterranean cutting elements uses a controlled oscillation super imposed on steady drill bit rotation to maintain a selected rock fracture level. In one aspect, a selected oscillation is applied to the cutting element so that at least some of the stress energy stored in an earthen formation is maintained after fracture of the rock is initiated. Thus, this maintained stress energy can thereafter be used for further crack propagation. In one embodiment, an oscillation device positioned adjacent to the drill bit provides the oscillation. A control unit can be used to operate the oscillation device at a selected oscillation. In one arrangement, the control unit performs a frequency sweep to determine an oscillation that optimizes the cutting action of the drill bit and configures the oscillation device accordingly. One or more sensors connected to the control unit measure parameters used in this determination.

The invention discloses a telescopic belt conveyor changeable in amplitude and direction, and relates to the field of logistics transportation cargo handling mechanical equipment. The telescopic belt conveyor is composed of a three-section two-stage telescopic belt conveyor body with a telescopic function, an amplitude change mechanism with tilting and amplitude change functions, and a swing rotating mechanism with swing rotating and direction change functions. According to the telescopic belt conveyor changeable in amplitude and direction, a sleeved telescopic machine frame structure is adopted, and the elongation and shortening function, the tilting and amplitude change functions and the swing rotating and direction change functions of the belt conveyor are added by additionally arranging the amplitude change mechanism and the swing rotating mechanism; the conveying range is widened, along with conducting of the loading, unloading and conveying processes, under the condition that loading and unloading places of materials are changed, the conveying distance, height and direction are adjusted by driving and controlling a telescopic mechanism, the amplitude change mechanism and a direction change mechanism, and thus, the telescopic belt conveyor can adapt to change of the loading and unloading places; cargoes are directly delivered to the destination through only one time of loading and unloading, manual auxiliary carrying is reduced, the labor intensity is relieved, the operation time is shortened, the loading and unloading efficiency is improved, and the loading and unloading carrying cost is reduced; and the working environment and the labor condition are effectively improved, and the effect that loading and unloading transport is economical, rapid, convenient and safe is ensured.

The invention belongs to the technical field of microwave antenna engineering, and discloses a broadband polarization insensitive meta-material wave absorber, for the purpose of solving the problems of narrow working bandwidth and sensitivity of incident electric field wave polarization directions of a conventional meta-material wave absorber. The broadband polarization insensitive meta-material wave absorber comprises a top-layer resonance structure, a middle-layer medium plate and bottom-layer copper foil, wherein the resonance structure comprises an opening resonance ring and a metal sheet disposed in the ring; when electromagnetic waves are incident to the wave absorber, the resonance structure generates a magnetic field loop, the medium plate generates dielectric loss, and electromagnetic energy is converted into heat energy through loss so that loss of the electromagnetic waves is absorbed. The wave absorber has absorption effects for incoming waves from different polarization directions so that the wave absorber is insensitive to the polarization directions of the incoming waves. At the same time, the working bandwidth of the wave absorber reaches 9.20 GHz. The broadband polarization insensitive meta-material wave absorber is applied to the field of electromagnetic interference shielding and stealth technologies and the like.

The invention discloses an apparatus and a method used for analyzing effects of shot blast materials. The apparatus comprises a peening machine, a support for plates, a displacement sensor, a laser velocity sensor, a controller and an X-ray emitter; the nozzle of the peening machine is vertical to the plane of a plate; the laser velocity sensor is used for measuring the velocity of the shot blast materials; and the displacement sensor is used for recording the displacement of the shot blast materials; and the X-ray emitter is used for measuring the plate residual stress caused by the impact of the shot blast materials. The apparatus and method are capable of measuring the change of the impact velocity of the shot blast materials on the plate and the plate residual stress, so that the apparatus and the method are capable of analyzing influences of different shot blast parameters on the effects of the shot blast materials.

A universal container locking system for cargo containers. The system includes an actuating mechanism located in the top corner casting of the cargo container, and a locking mechanism located in the bottom corner fitting of the cargo container. The actuating mechanism is coupled to the locking mechanism such that rotation of a pick cone positioned in the top corner fitting from its initial insertion position to an orientation approximately 45° does not cause rotation of the locking cone extending from the bottom corner fitting while subsequent rotation of the pick cone from an orientation of approximately 45° to an orientation of approximately 90° causes the locking cone extending from the bottom corner fitting to rotate approximately 45° from the locked position to the unlocked positions.

A device can comprise an outer frame, a platform, and a motion control mechanism. The motion control mechanism can be adapted to permit movement of the platform in a desired direction with respect to the outer frame and inhibit rotation of the platform with respect to the outer frame. An actuator can be contained at least partially within the motion control mechanism.

The invention provides a film cutting device comprising a machine frame and a conveyer belt assembly. The conveyer belt assembly comprises a first rolling shaft, a second rolling shaft and a conveyerbelt. The conveyer belt is connected to the first rolling shaft and the second rolling shaft in a sleeving manner. The film cutting device further comprises a motor, a gear transmission assembly, pullrods, a cutter, a connection rod mechanism and a one-way bearing. An output shaft of the motor is connected with the input end of the gear transmission assembly. One end of each pull rod is rotationally connected with the gear transmission assembly in an eccentric manner. The other end of each pull rod is rotationally connected with the upper end of the cutter. The cutter is located above the conveyer belt. The input end of the connection rod mechanism is connected with the upper end of the cutter. The output end is connected with the first rolling shaft through the one-way bearing. The motoris fixed to the machine frame. The motor drives the cutter to move up and down through the gear transmission assembly and the pull rods, the first rolling shaft is driven to conduct intermittent rotation through the connection rod mechanism and the one-way bearing, and the two actions of film cutting and feeding are achieved. The film cutting device is simple in system and saves energy.

Provided is an arm-supporting structure, including a front arm connector, a rear arm connector, an adjusting means for an upper support and a lower support, and an elastic supporting means. The front arm connector, the upper support, the rear arm connector and the lower support are articulated sequentially to form a parallelogram structure. The upper end and the lower end of the adjusting means are articulated with the upper support and the lower support, respectively. Two ends of the elastic supporting means are connected with the adjusting means and the upper support, respectively. The elastic supporting means has a length that is elastically stretchable. The adjusting means automatically adjusts its position in accordance with the swinging of the upper support and the lower support, shifts the position of the fulcrum of the elastic supporting means, and automatically reaches a balance of force.

A gear configuration allows force (torque) coming from a drive shaft to be transmitted to a driven shaft through two hemispherical gears that are placed at the end of the shafts and touch each other in variable, but constantly equal distance from the poles. This constant equal distance from the poles can be maintained through synchronization gears that are positioned against each other on both sides of U-shaped elements. These U-shaped elements also keep the shafts in position, where each U-shaped element on each of the shafts are connected by a ring formed hinge element, consequently keeping the hemispheres in connection

The invention discloses a down-the-hole radial gate with multiple frames and multiple trunnions and two lifting pad eyes. The down-the-hole radial gate with the multiple frames and the multiple trunnions and the two lifting pad eyes is characterized in that a multiple frame structure is adopted in the door body structure of a gate (1), and the gate (1) is hinged with a group of trunnions (4) installed on a breast wall (3) of a gate wall (2). The down-the-hole radial gate with the multiple frames and the multiple trunnions and the two lifting pad eyes reduces loads distributed to each main beam and each support arm through the multiple frame structure, shares huge concentrated water pressure of a high water head of a drainage port to the gate through the plurality of trunnions, and the loads distributed to each trunnion are greatly reduced so as to reduce the difficulties of the design, manufacture, welding, transportation and installation of the gate and the casting of the trunnions. The radial gate is provided with the two lifting pad eyes, is operated by adopting a double-cylinder swinging type or a suspension type hydraulic cylinder, the volume of single cylinder hydraulic cylinder is reduced by half so as to reduce the difficulties of the design, manufacture and installation of the hydraulic cylinder. The rotating center of the gate coincides with the circle center of an arc-shaped water-facing surface, and the total water pressure acting on the arc-shaped water-facing surface is enabled to always pass through the rotating center of the trunnions so as to reduce the force of the opening and closing of the gate.

The present invention relates to an apparatus and method for measuring the deformation of a concrete structure by using mutual inductance coil matrixes. The method includes the following steps that: a plurality of sets of three-dimensional matrix one-transmitting & multi-receiving electromagnetic detection coil groups are uniformly pre-buried in the concrete structure; and the change of the relative distances of electromagnetic detection transmitting coils and electromagnetic detection receiving coils is monitored, so that the deformation amount of the concrete structure can be measured indirectly, and the deformation stress distribution condition of the concrete structure is deduced; and therefore, real-time monitoring of the deformation of the concrete structure can be realized, potential security risks can be predicted, so that preventive measures can be taken, and thus, the occurrence of dangerous accidents can be effectively prevented.

The invention relates to an asynchronous cooperative optimal AGC control system for a wind power plant and a conventional frequency modulation unit. The system comprises a wind turbine generator secondary frequency modulation response model and a wind power plant and conventional frequency modulation unit asynchronous cooperation participation secondary frequency modulation control model; the windturbine generator secondary frequency modulation response model comprises a wind speed prediction module; the wind speed prediction module sends the maximum output to a wind power plant load sheddingcalculation module; the wind power plant load shedding calculation module sends the total adjustment amount of a wind power plant to a proportional distribution module; and the proportional distribution module generates the power generation amount of each generator and sends the power generation amount to a wind turbine generator control module; the wind power plant and conventional frequency modulation unit asynchronous cooperation participation secondary frequency modulation control model comprises an asynchronous cooperative optimal AGC control model; the asynchronous cooperative optimal AGC control model is connected with the wind power plant load shedding calculation module and the conventional frequency modulation unit module; and the wind power plant load shedding calculation module, the conventional unit frequency modulation module and a load are connected into a power system module. According to the system, asynchronous cooperative optimal AGC control is adopted, and the real-time optimal distribution of the frequency modulation capacity of the wind power plant and the conventional frequency modulation unit is achieved.

A shade structure assembly includes at least one column member. A horizontal beam is secured at a top end of the column member. A first rail is secured to a first end and a second rail is secured to a second end of each horizontal beam. At least one truss assembly is secured to the rails. The truss assembly includes at least two truss members arranged in spaced parallel relation. Structural supports connect the truss members along two of the truss beams and panel supports connect the truss members along two of the truss beams. The panel supports mount a panel array. Each truss member may comprise a center truss portion and one or both of a first and second truss extension. Each truss member may be comprised of a universal center truss portion and one or both of a first and second truss extension.

A hydraulic block of a slip control system of a hydraulic vehicle brake system includes receptacles for the hydraulic accumulator and receptacles for outlet valves arranged on opposite sides of each other in the hydraulic block. The sides of the hydraulic block, which comprise the receptacles for the outlet valves and the hydraulic accumulators, are connected to one another by bores perpendicular thereto.