76results about How to "Counteract the reaction force" patented technology

The invention discloses an auxiliary device for starting and receiving of a shield machine. The auxiliary device comprises a steel sleeve, a bottom framework, and a bearing board, wherein the steel sleeve is formed by connecting a plurality of sleeve bodies, the bottom framework is arranged at the bottom of the steel sleeve, the bottom framework comprises a plurality of sections, the bottom framework comprises a bottom board that extends along a direction vertical to an axis of the steel sleeve, the bearing board extends along the direction vertical to the axis of the steel sleeve and has a side edge matched with the outer side wall of the sleeve body, the bearing board is vertical to the bottom board, lifting boxes are arranged at two ends of the bottom board, the lifting boxes comprise an external box that is formed by connecting a top board parallel to the bottom board with a part of the bearing board and an internal box that is arranged in the external box, the internal box is internally provided with a hydraulic device, and a plurality of vertical and horizontal steel boards are arranged in a clearance between the internal box and the external box so as to divide the clearance into a mesh structure. The auxiliary device can be used for starting and receiving of the shield machine, also can realize cross-station, lifting and translation of the shield machine, is low in device loss and long in service life.

The invention discloses an optical fiber sensor combination for monitoring the corrosion of reinforced concrete. The optical fiber sensor combination comprises an optical fiber sensor and a compensation sensor, wherein the optical fiber sensor and the compensation sensor comprise reinforcing steel bar elements, reinforced fiber glass reinforced plastic support bases, optical fiber Bragg gratings and connecting optical fibers, protective sleeves, silicon sheets, reinforcing steel bar coating regions, reinforcing steel bar un-coating regions, and mortar housings, wherein the reinforcing steel bar elements of the optical fiber sensors are reinforcing steel bars to be tested, and the reinforcing steel bars of the compensation sensor are 316L stainless steel bars. According to the optical fiber sensor combination, a reaction force of mortar is counteracted to a certain extent, the local corrosion of the reinforcing steel bars is favorably monitored, and the sensitivity of monitoring is improved. The compensation sensor is made by adopting a manner of replacing common reinforcing steel bars by 316L stainless steel, and is simple in principle and convenient to operate. The optical fiber sensor combination is simple in structure, convenient to manufacture, low in cost, good in sensitivity, high in accuracy, strong in anti-electromagnetic interference, high in reliability, good in durability, and high in stability, and is suitable for monitoring the long-term durability of reinforcing steel concrete structures such as saline and alkaline land, seawater and deicing salt under multiple environments.

The invention relates to an automobile suspension system, and a control system and method of the automobile suspension system and belongs to the technical field of automobile suspension. The automobile suspension system comprises a lower swing arm, a shock absorber assembling component, an upper swing arm and a wheel assembling component. According to the automobile suspension system, the equivalent stiffness of suspension springs is adjusted according to signals collected by a sensor, and the manipulation stability and traveling comfort of an automobile are fully combined; the height of an automobile chassis is adjusted appropriately, and the traveling passing ability of the automobile is improved; a rotary type stepping motor of the suspension system further has the effect similar to a force generator in an active suspension system and can provide reacting force counteracting impact of wheels for the suspension system through forward rotation or reverse rotation; and a limiting nut and a piston rod thread constitute a lead screw nut structure, so that the self-locking function is achieved, thus, electric energy is consumed only when the rotary type stepping motor rotate forwardsor reversely, and the energy saving effect of the automobile suspension system is better than that of the active suspension system.

The invention relates to the field of health care and beauty products and medical instruments, in particular to a belly massager suitable for gastrointestinal motility insufficient patients and abdominal obesity patients. The belly massager can be manufactured in three types which are the single-disc belly massager, the four-disc belly massager and the two-disc belly massager. According to the single-disc belly massager, a motor is connected with a massage shaft component and a massage head component through an eccentric coupler and drive the massage shaft component and the massage head component to rotate, so that a bottom massage disc conducts parallel circular motion, and the belly of a patient is massaged. The four-disc belly massager and the two-disc belly massager are each provided with two gear motors, each motor drives two sets of massage shaft components and massage head components to rotate through a driving gear and a driven gear, and multiple portion massage is achieved. The massage head components can be rapidly detached and installed, and massage heads are convenient to replace. The belly massager is small in size and weight and can be held by hands or tightened through a pull belt to conduct massage, a user operates the belly massager conveniently and freely, and the belly massager has the relatively high use comfort level and massage efficiency.

The invention discloses a plant protection drone. The plant protection drone comprises a drone body, a spray bar and a plurality of spray heads, wherein the spray bar comprises an inner spray bar andan outer spray bar; one end of the inner spray bar is connected with the drone body; the other end of the inner spray bar is connected with the outer spray bar; during working, the outer spray bar canbe rotated in a vertical plane relative to the inner spray bar to move to a vertically downward position or a horizontal position; and the spray heads are arranged on the inner spray bar and the outer spray bar along the length direction of the spray bar at intervals. The plant protection drone disclosed by the invention has the beneficial effects that when the plant protection drone works, the outer spray bar can be rotated in a vertical plane relative to the inner spray bar to move to a vertically downward position or a horizontal position, so that the horizontal spraying and the longitudinal spraying of a medicine can be realized and the plant protection drone can adapt to various sprayed objects, is suitable for spraying needs of different crops and different environments, meets practical application needs and has strong practicability and a broad application prospect.

The invention discloses a body building magnet therapy type rehabilitative apparatus. The body building magnet therapy type rehabilitative apparatus comprises a rotating device, an adjusting support and a body building plate, wherein the left end of a transverse rod is fixedly connected with a left clamping ring, the right end of the transverse rod is fixedly connected with a right clamping ring, a left cushion plate is connected to the position below the left end of the transverse rod through a first connecting rod, a right cushion plate is connected to the position below the right end of the transverse rod through a second connecting rod, a first arc-shaped protecting plate is fixedly connected to one side of the body building plate, a second arc-shaped protecting plate is fixedly connected to the other side of the body building plate, magnet therapy blocks are evenly arranged on the surface of the body building plate, a bracket is arranged on the bottom face of the body building plate and composed of an arc-shaped frame, an arc-shaped protrusion and a carrying table, the arc-shaped frame and the carrying table are of an integrally-formed structure, the arc-shaped protrusion is fixed to the center of the arc-shaped frame, and the carrying table is elastically connected with the bottom face of the body building plate through spring columns. According to the body building magnet therapy type rehabilitative apparatus, due to the fact that the magnet therapy blocks are arranged on the body building plate, the bracket is arranged below is the body building plate, a rehabilitation person can flexibly adjust the inclination angle of the body building plate through the bracket, and therefore the rehabilitation effect of the rehabilitation person is greatly improved.

The invention relates to a counterforce offsetting device and a pasting machine having the device. Disclosed here is a counterforce offsetting device. The device has a conveying system with a moving element. The counterforce generated by the motion of the moving element is transmitted to a mass element moving in a direction perpendicular to the moving direction of a supporting element. Meanwhile, the counterforce is converted into energy for moving the mass element. The counterforce is thus offset. A simple structure of a counterforce system is then achieved. Even if the conveying system is moving a direction different from the moving direction of the moving element, the counterforce generated by the motion of the moving element can be offset.

A counter-rotating polisher includes: an enclosure, an electric motor, a polishing arrangement and a counter-rotating arrangement. The electric motor is fixed to the enclosure and includes a driving axle. The polishing arrangement includes two polishing device. The polishing devices respectively include a fixed tray and a polishing material that are fixedly connected to an outside of the fixed tray. The fixed tray is perpendicular to the driving axle. The counter-rotating arrangement includes a first driving wheel, a second driving wheel and a change-direction wheel. The first driving wheel is connected to the driving axle and driven by the driving axle. The second driving wheel is fixedly connected to the second fixed tray. The change-direction wheel is connected to the first driving wheel and the second driving wheel. The driving axle rotates the first polishing material positively. The change-direction wheel reversely transmits the rotation to the second driving wheel.

The invention provides an unmanned aerial vehicle, specifically a compact unmanned aerial vehicle, which belongs to the field of aircrafts. The compact unmanned aerial vehicle comprises a propeller hub, rotors and a power output shaft, wherein the rotors are mounted on the propeller hub; and the power output shaft is positioned under the propeller hub and connected with a rotor driving motor. The rotor driving motor is placed on a vehicle frame; a flight control system, a speed regulation controller of the rotor driving motor and a battery are all mounted within the vehicle frame; at least two rotors are respectively mounted at two ends of the vehicle frame; and the two rotors are distributed in the same horizontal plane up and down in high and low forms. The structure size of the unmanned aerial vehicle is integrally reduced; the volume space of the folded unmanned aerial vehicle is further reduced by using a foldable management scheme; by using the unmanned aerial vehicle which adopts a mode of forming the two rotors at different heights to generate an overlapped part, the integral size of the unmanned aerial vehicle is further reduced; without affecting lifting flight balance capacity of the unmanned aerial vehicle, compact design is further performed to provide small volume so as to achieve a portable purpose.

The invention discloses an electromagnetically driven-electro-hydraulic pipe forming device and method. The device comprises a power supply module, a forming module, a boosting module, a forming moldand a fixing unit; a power supply 1-2 for forming is triggered to make a metal wire 2-2 chemically react with liquid in a chamber 6 to produce an explosive shock wave to drive a workpiece to be formedto generate plastic deformation, and is formed under the restraint action of a mold cavity 4-1. In addition, a power supply 1-1 for boosting triggers a boosting coil 3-1 to generate induced eddy currents and a time-varying magnetic field on a drive plate 3-2, through timing sequence cooperation, axial boosting electromagnetic force is provided for the whole forming process, and meanwhile, the drive plate 3-2 transmits the electromagnetic action force to the end of the workpiece to be formed 7, thereby increasing the axial motion tendency of a pipe and improving the fluidity of a material; andtherefore, under the synergistic effect of the high-speed shock wave load and the axial boosting force of the drive plate, the plastic deformation processing of the workpiece to-be-formed 7 can be realized, and the forming capability and the mold attaching performance of the workpiece can be effectively improved.

The invention provides a fire-fighting truck boom device and a fire-fighting truck. The fire-fighting truck boom device comprises a support arm, a telescopic water pipe and a spray gun assembly; the support arm comprises a first end and a second end in the length direction, the first end is fixedly provided with a telescopic oil cylinder, and the telescopic direction of the telescopic oil cylinderis arranged in the length direction of the support arm; the telescopic water pipe comprises a first pipe section and a second pipe section, the second pipe section and the first pipe section are sleeved with each other, and the first pipe section can extend or retract outwards relative to the second pipe section; the spray gun assembly is connected with one end, away from the second pipe section,of the first pipe section, wherein the second pipe section is connected with the support arm, the first pipe section is connected with the telescopic end of the telescopic oil cylinder, and the telescopic oil cylinder is used for driving the first pipe section to extend out of a predetermined distance of the first end of the support arm in the length direction of the support arm. According to thetechnical scheme, the space arrangement of the fire-fighting truck boom device is optimized, and the extension length of the fire-fighting truck boom device and the operation range of the spray gun assembly are increased under the condition that the overall size is not influenced.

The invention relates to a push-pull rotational trenching machine for trenching on basic underground walls of buildings. A hinged support is arranged at the lower end of an upright post; a slide bar is connected to the upper end of the upright post; a sliding bush is arranged on the periphery of the slide bar, and is fixedly arranged on a driving rod through a connecting block; the right end of the driving rod is hinged at the left end of a driving hydraulic cylinder; the right end of the driving hydraulic cylinder is hinged on the upright post; a plurality of gear boxes are arranged on the lower part of the driving rod; the gear box are connected through a linking rod; a cutter head A and a cutter head B are arranged at the lower end of each gear box; and the cutter A and the cutter B are respectively provided with a plurality of drilling teeth.

A power conversion device includes a plurality of semiconductor modules, a plurality of coolers, and a frame. The frame pressurizes and holds a stacked body in which the semiconductor modules and the coolers are alternately stacked. The frame includes a first frame and a second frame that sandwich the stacked body therebetween. The first frame is a plate material bent to surround the stacked body from three directions, and includes a pair of side walls extending in the stacking direction of the stacked body, and an abutting wall extending between the side walls and abutting the stacked body. The abutting wall is bent outward from the frame. Each of the side walls is bent inward from the frame.

A method of forming an apparatus for probing die electricity, which determines a reinforcement structure according to features of a converting plate, and combines the converting plate, reinforcement structure and a substrate for forming the apparatus for probing die electricity. In an embodiment, the apparatus for probing die electricity further comprises a substrate, a converting plate, a needle module and a reinforcement structure. The converting plate comprises two opposite surfaces respectively having a plurality of first and second conductive elements. The needle module comprises a plurality of needles respectively and electrically connected to the plurality second conductive elements. The reinforcement structure is disposed between the converting plate and the substrate.

The invention relates to a butterfly helicopter. The butterfly helicopter is characterized in that three wing plates are vertically installed under a single rotor; downward airflow generated by the rotor allows the wing plates to generate horizontal thrust so as to counteract the reaction force of the rotor; three cones around the rotor compose a butterfly cabin which is connected to a spindle sleeve located on the lower part of the rotor by three inclined pull bars via movable bolts; the upper parts of the wing plates are provided with three horizontal hydraulic rods; the gravity center of the helicopter is moved through telescoping; the rotor inclines so as to generate thrust moving towards one side; and flaps are controlled so as to maintain or change the turning direction of the cabin,so the butterfly helicopter can realize omnibearing flight. The rotor is mounted inside the butterfly cabin and is thus protected, and the conical shells of a generator and a gearbox can reduce powerloss. The armored cabin with a triangular cross section has stealth and protection functions; in the case of falling, the wing plates generate horizontal thrust, which makes the butterfly helicopterglide in airflow; the butterfly helicopter is equipped with a large parachute to prevent crash, and pilots and passengers can escape through an ejection capsule; and the lower parts of the cabin and the engine shell are sealed, so the butterfly helicopter can land on water.

The invention provides a multi-rod quadruped robot. The multi-rod quadruped robot comprises a robot body support and mechanical legs. Each mechanical leg comprises a shock absorption device, a connecting assembly and a supporting device. The connecting assembly is connected with the supporting device; the shock absorption device is arranged between the connecting assembly and the supporting deviceand connected with the connecting assembly and the supporting device. When the mechanical legs are in contact with the ground, a part of reaction force of the ground to the mechanical legs is offsetby the shock-proof device; the other part of reaction force is transmitted to the upper bracket through the lower bracket; the other part of the reaction force is transmitted to the shock-proof deviceby the upper bracket to be counteracted; therefore, the reaction force of the ground on the mechanical legs can be fully counteracted; the acting force is prevented from being transmitted to a fuselage bracket; the damping effect is good; when the fuselage bracket bears a load, the mechanical legs need to bear large pressure; by arranging the shock absorption device for buffering, the pressure needing to be borne by the mechanical leg is reduced, and then the situation that swinging is unstable during movement is avoided.