40results about How to "Reduce vibration load" patented technology

The cab is situated on the body frame. The engine cover is situated in front of the cab. The engine includes the crankshaft extending in the longitudinal direction of the bulldozer. The air cleaner is situated above the engine. The air cleaner is secured to the engine cover. The duct connects the air cleaner and the engine. The duct includes the first connector and the second connector. The first connector is connected to the engine. The second connector is connected to the air cleaner. The front mounting part supports the engine on the body frame. The rear mounting part supports the engine on the body frame. The rear mounting part is situated behind and above the front mounting part.

The invention discloses a chassis under limited conditions, comprising a car frame, front and back axles, a leaf spring suspension, a car engine, a clutch, a car gearbox, a transfer case and a fuel tank. The chassis is characterized in that car frame has narrow front and wide back structure; a chassis roll cage which can improve torsional rigidity of the car frame is arranged in the middle of the car frame; the engine and the car gearbox are separately arranged; the engine is at the front end of the car frame; the car clutch is arranged at an output end of the engine; the car gearbox is at the middle position of the car frame and is connected with the clutch through a driving shaft. The chassis has simple structure, low cost, safe driving and good passing ability under complex road conditions such as muddy road, grassland, desert and the like.

The invention discloses an electric control type wood leftover material classifying and screening device, and relates to the technical field of wood processing devices. The electric control type woodleftover material classifying and screening device comprises a support, wherein a box body is rotatably connected onto the support; a rotating motor is installed at the bottom of the support; the output end of the rotating motor drives the box body to rotate around the horizontal axial direction of the box body through a synchronous belt; a feeding bin door is installed on the top side of the boxbody; a discharging bin door is installed on the bottom side of the box body; a vibration motor is installed in the box body; and the box body is connected with a thermal control screen plate in a sealed and sliding mode along the axial horizontal plane of the box body. According to the electric control type wood leftover material classifying and screening device provided by the invention, a controller controls multiple electric heating wires to be powered on and dynamically adjusts the power-on intensity of the electric heating wires under feedback signals of a temperature sensor, and stabletemperature control is formed, so that different temperatures of the electric heating wires are controlled; and at the moment, memory metal sheets wound by the electric heating wires are heated and expanded at different temperatures to form different radius states, so that wood with different particle sizes can be screened, and multi-stage screening can be completed by one thermal control screen plate.

The invention provides an oscillation isolation device for a satellite borne temperature-compensation crystal oscillator. The oscillation isolation device comprises an oscillation isolation box body, a crystal oscillator circuit printed plate, and a quartz oscillator, wherein a rigid mounting table is mounted in the oscillation isolation box body; the quartz oscillator is directly fixed on the rigid mounting table through an elastic fastening clamp, and is electrically connected with the crystal oscillator circuit printed plate; bolts are mounted on bases of the oscillation isolation box body; oscillation isolation damper sleeve pipes are designed on the bases. The oscillation isolation device can realize functions of oscillation isolation and heat radiation, and is particularly suitable for oscillation isolation and oscillation reduction of objects which are small in size and sensitive to temperature of a satellite borne temperature-compensation crystal oscillator, and the like.

The invention discloses an airplane landing gear with an anti-buffeting device. The airplane landing gear comprises a main landing gear body, airplane wheels and an upper resistance supporting rod (2); the airplane landing gear further comprises a lower resistance anti-buffeting device (A), the upper end of the lower resistance anti-buffeting device is hinged to the upper resistance supporting rod(2), and the lower end of the lower resistance anti-buffeting device is hinged to the lower end of a main landing gear supporting column outer cylinder (1); the lower resistance anti-buffeting device(A) comprises an upper connector (31), a lower connector (31), a rigid spring sheet damper (a) and a rigid spring sheet damper (b), and the rigid spring sheet damper (a) and the rigid spring sheet damper (b) are fixed between the upper and lower connectors. According to the airplane landing gear, dissipation of the landing gear under the vertical sliding buffeting state on the ground is achieved,and the situation of severe buffeting during slide of an airplane on the ground is avoided; vibration energy induced by a low-frequency brake can be effectively absorbed, the vibration amplitude andvibration load are greatly lowered, and the problem is solved that due to buffeting, the jolt phenomenon during taking is aggravated, parts are damaged, and the service life is shortened.

The invention discloses a device for lowering fluid pulsation impact. The device for lowering fluid pulsation impact is of an inverted-L shape on the whole. The device for lowering fluid pulsation impact comprises a first pipe, a second pipe, a third pipe, a fourth pipe, a fifth pipe and a sixth pipe, wherein the first pipe, the second pipe, the third pipe, the fourth pipe, the fifth pipe and thesixth pipe are sequentially connected and communicate. The axle wires of the first pipe, the second pipe, the third pipe, the fourth pipe, the fifth pipe and the sixth pipe are all located in the sameplane. The first pipe is a horizontal straight pipe. The second pipe is a bent pipe. The third pipe is a vertical straight pipe. The fourth pipe and the fifth pipe are bent pipes. The sixth pipe is avertical straight pipe. The first pipe and the third pipe are connected through the second pipe, the third pipe and the sixth pipe are connected through the fourth pipe and the fifth pipe so that thefirst pipe and the third pipe are perpendicular to each other, and the third pipe and the sixth pipe are parallel with each other. According to the device for lowering fluid pulsation impact, throughan elbow connection manner, vibration load of a liquid input pipeline can be lowered, and the pulsation impact pressure of a liquid in the liquid input pipeline on a volumetric pump is buffered.

The invention relates to a multi-functional adjustable bridge electromagnetic damper and bridge, which comprises: a cylinder body, a fixed electromagnetic head is arranged in the cylinder body; a piston rod, which has a first end pierced in the cylinder body ; By controlling the magnetic pole of the fixed electromagnetic head to be opposite or the same as the magnetic pole of the first end, the cylinder body and the piston rod are locked or unlocked. The invention relates to a multifunctional adjustable bridge electromagnetic damper and the bridge, which can be used in various states of the bridge, and the bridge does not need to be dismantled after the bridge is built, which saves the temporary consolidation device of the tower and girder during the construction of the cable-stayed bridge Resources, reduce construction procedures and links, speed up the progress of the project, facilitate centralized control of construction operations, and ensure construction quality and safety.

A satellite structure for satellite rocket vibration isolation based on elastic airbags, including a satellite root vibration isolation airbag group fixed between the satellite rocket connection and separation device and the root of the satellite body; one end is fixed at each corner of the top of the satellite body, and the other end is close to the rocket The anti-collision airbag group at the top of the satellite at the inner wall of the fairing; the vibration isolation airbag group at the base of the satellite is composed of a high-strength sealed airbag filled with high-pressure gas, which is used to isolate the vibration and impact load transmitted by the installation interface of the satellite and rocket, and at the same time support and fix the satellite body The anti-collision airbag group on the top of the satellite is also composed of high-strength sealed airbags filled with high-pressure gas. When the vibration displacement of the top of the satellite is too large, it acts as an anti-collision buffer for the satellite and the inner wall of the rocket fairing to avoid damage to the satellite structure caused by the impact load; The invention has simple structure and obvious vibration isolation effect, can effectively reduce the vibration load on satellite products, and can greatly reduce the development cost of satellite components.

The invention discloses an active load reducing device for a sudden load of an aero-engine tester. According to the device, a pneumatic chuck is fixed on the upper surface of a chuck support; a working sleeve at one end of a variable stiffness elastic support is arranged in the inner surface of the pneumatic chuck; a flange at the other end of the variable stiffness elastic support is connected with a simulation tester; a three-jaw chuck at one end face of the pneumatic chuck is in a clamping state when the three-jaw chuck is powered on and is in a release state when the three-jaw chuck is powered off; and the variable rigidity elastic support is clamped by adjusting the distance between chuck jaws. The device disclosed by the invention has the beneficial effects that by utilizing the variable stiffness elastic support, the support stiffness is adaptively changed and the critical rotation speed of a rotor system is significantly changed, thereby reducing an impact load of a blade flying off the rotor system and providing experimental support for the safety design of the rotor system when a sudden imbalance occurs; and the device has the characteristics of low cost, good repeatability and implementation convenience.

The invention discloses a flexible unloading device, which is used for uniform unloading of the vertical pump pipe force of concrete conveying in high-rise buildings. It includes a base, a rubber backing plate, a force transmission device and a rubber washer. , to facilitate the installation and disassembly of the unloading device; the base is attached to the upper surface of the cast member, the force transmission device is arranged on the upper part of the base, a rubber pad is arranged between the force transmission device and the base, and the force transmission device is set On the outside of the pump tube, a rubber gasket is arranged between the force transmission device and the pump tube. The device unloads uniformly layer by layer to prevent damage to the pump tube and damage to the floor due to stress concentration.

Embodiments of the present invention provide a method and device for suppressing mechanical vibration of a wind power generating set and a wind power generating set. The method includes: acquiring the mechanical vibration condition of the wind generating set through a vibration sensor, the mechanical vibration condition of the wind generating set including the vibration frequency of the wind generating set; and controlling the output power of the wind generating set according to the mechanical vibration condition of the wind generating set Harmonic power is injected into the loop to make the wind power generating set generate active vibration, which is used to offset the mechanical vibration of the wind power generating set, wherein the frequency of the injected harmonic power is equal to the vibration frequency of the wind power generating set. Therefore, the purpose of reducing the overall vibration load of the wind power generating set can be achieved, and the service life of the wind power generating set can be improved.