15 results about "Inertial mass" patented technology

This invention provides a vibration damping device and a method for designing such a device that can simultaneously tune to multiple natural vibration modes without increasing the installation space or weight. [Solution] The system includes a weight 2 attached to the building 11 (the structure to be damped) via a first spring 3, a first damping element 4 provided in parallel with the first spring 3 between the building 11 and the weight 2, and an inertial mass element 5, a second spring 7, and a second damping element 6 provided in parallel with the first spring 3 and the first damping element 4 between the building 11 and the weight 2. The inertial mass element 5 and the second damping element 6 are provided in parallel, and the second spring 7 is provided in series with the inertial mass element 5 and the second damping element 6. The period of the vibration system composed of the weight 2, the first spring 3, and the first damping element 4 is set to tune to one natural vibration mode of the building 11, and the period of the vibration system composed of the inertial mass element 5, the second damping element 6, and the second spring 7 is set to tune to another natural vibration mode of the building 11.

A regulating member for a horological movement including an inertial mass, for example a balance, a balance spring, and an index-assembly system for adjusting the rate of the balance spring, the index-assembly system including a stud-holder including a first portion and a second portion, the first portion being movable relative to the second portion, wherein the regulating member includes locking device configured to block the second portion of the stud-holder in one position with respect to a plate of the movement.

The invention relates to a three-dimensional escapement for a timepiece movement comprising a driving device provided with a barrel and a gear train, the three-dimensional escapement comprising an inertial mass, an elastic return device and an escapement mechanism, wherein the three-dimensional escapement comprises an inner carrier and an outer carrier, the inner carrier carrying the inertial mass, the elastic return device and the escapement mechanism, the inner carrier being rotatable about a first axis of rotation, the outer carrier being rotatable about a second axis of rotation, the inner carrier being housed inside the outer carrier, the driving device being configured to actuate the rotation of the outer carrier in parallel with the rotation of the inner carrier, a first portion of the torque provided by the driving device being transmitted to the outer carrier, a second portion of the torque being transmitted to the inner carrier, the driving device being further configured to actuate the escapement mechanism in parallel with the rotation of the outer carrier and in parallel with the rotation of the inner carrier, a third portion of the torque provided by the driving device being transmitted to the escapement mechanism. The invention also relates to a timepiece movement comprising such a three-dimensional escapement.

The invention relates to a device for simulating a belt slack and / or for simulating belt forces, comprising a guide (12) for a seatbelt (20) which includes static guide elements (14) and a movable deflection element (16) which is adjustable relative to the latter from an initial state via an intermediate state to a final state, and at least one inertial mass (18), wherein the guideway (17) for a seatbelt (20) predetermined by the deflection element (16) and the adjacent guide elements (14) is V-shaped in the initial state and the deflection element (16) and the inertial mass (18) do not interact, in the intermediate state is designed to be less V-shaped and the deflection element (16) and the inertial mass (18) interact, and the predetermined guideway (17) is at least approximately linear in the final state.

A method for setting the rate of a regulating organ (10) in a horology movement, the regulating organ (10) including an inertial mass (5), such as a balance, and resilient means (2) for returning the inertial mass (5), such as a balance spring, the resilient return means (2) being configured to enable the inertial mass (5) to carry out an oscillatory movement, the method including a step in which material is added to and / or removed from the inertial mass (5) by projecting material (9) using a laser (7).

The application belongs to the technical field of structure damping, and discloses an inertia-capacitor-particle composite damping device with structure reinforcing function. The particle damper is optimized based on the inertia capacitor and the cross partition reinforcing structure, so that the damping device is light and efficient, and has the functions of structure reinforcing and multidirectional damping. The damping box structure is complementary to the inertia mass effect of the inertia capacitor through the collision energy consumption between the steel ball particles and the cavity in the particle box and the multidirectional free motion of the particle box caused by the structure vibration, effectively reduces the vibration response of the power transmission tower, and realizes the lightweight design goal. The adjustable telescopic arm and the lock structure add the cross partition reinforcing performance to the damping box, and guarantee the overall spatial stability of the power transmission tower structure when bearing the vibration force. In addition, the design of the adjustable telescopic arm and the lock structure type makes the application have the characteristics of convenient transportation and carrying, quick maintenance, small construction difficulty, operation safety and the like.

This invention discloses a modular automotive bumper assembly and its installation method, belonging to the field of automotive bumper technology. The modular automotive bumper assembly of this invention includes a bumper cover plate, a pneumatically driven liquid booster pump, and a magnetorheological fluid energy-absorbing box. Side guards are welded to both sides of the bumper cover plate. An inertial plate is installed at one end of the magnetorheological fluid energy-absorbing box. Magnetorheological fluid storage tanks are provided at both ends of the pneumatically driven liquid booster pump. A booster sleeve is installed inside the magnetorheological fluid energy-absorbing box. This invention solves the problem that existing modular bumpers cannot achieve adaptive energy absorption and cannot guarantee instantaneous compressive strength. This invention utilizes the magnetorheological fluid, which mainly flows in a low-viscosity Newtonian fluid state, to provide basic damping. During a collision, the deceleration causes the inertial mass block to generate sufficient force, instantly pushing the inertial plate and changing the gap or flow channel shape of the shear valve, generating a huge damping force, thereby significantly improving the instantaneous compressive strength of the magnetorheological fluid energy-absorbing box.

The present invention relates to a boring bar (1000) with active dampening means (101) for lessening vibration in a machine tool, a head (102), a main body (100) of the bar (1000), a central area (21) and a peripheral area (22) of the bar (1000). The dampening means (101) comprise at least one electromagnetic effect actuator (1) with at least one casing (11) enclosing a respective cavity (12), at least one inertial mass (3), arranged in the cavity (12) which is movable with respect to the casing (11) of the actuator (1) due to the effect of an electromagnetic field. The actuator (1) is located in a respective housing (23), conjugate to the casing (11), in the peripheral area (22) of the bar (1000). The dampening means (101) comprise a set of coils (4) and permanent magnets (5), configured to act on the same plane perpendicular to the longitudinal direction.

The invention relates to a method for adjusting the rate difference of a time control mechanism (10) in a timepiece movement, the time control mechanism (10) comprising an inertial mass (5), for example a balance, and an elastic return means (2), for example a spring, for returning the inertial mass (5), the elastic return means (2) being configured to enable an oscillating movement of the inertial mass (5), the method comprising the following steps: adding material to and / or removing material from the inertial mass (5) by using a laser (7) to project material (9).

The application belongs to the technical field of vibration control, and particularly relates to a main structure displacement amplification type tuned negative stiffness inertial mass dynamic vibration absorbing system. The system comprises a bottom plate, a core transmission member, a positive stiffness spring mechanism, a gear amplification mechanism, a negative stiffness device, an inertial mass device driven to rotate by the movement of the core transmission member to generate an equivalent tuned mass, and an eddy current damping device. The gear amplification mechanism amplifies the initial displacement input by the external main structure, overcoming the defects of the traditional shock absorber, such as difficulty in triggering and insufficient work under low frequency or slight vibration; not only the natural frequency of the coupled structure is reduced by the negative stiffness effect to broaden the vibration reduction frequency band, but also more energy is dissipated in unit time and a huge equivalent tuned mass is generated, so that the destructive large displacement of the base isolation layer in strong earthquakes is extremely efficiently inhibited without significantly increasing the structure acceleration, and the seismic safety of the building is comprehensively improved.

A gas outburst prevention drill rod comprises a rod body, a cavity is arranged in the rod body in the axial direction, a damping mechanism is arranged in the cavity, the damping mechanism comprises a counterweight, an elastic structure is arranged in the circumferential direction of the counterweight, one end of the elastic structure is connected with the counterweight, and the other end of the elastic structure is connected with the rod body. By arranging the damping mechanism composed of the counterweight and multiple groups of circumferential springs in the cavity of the drill rod, the inertia mass of the counterweight and the deformation of the spring are utilized to absorb and dissipate vibration energy. The scheme is directly installed on the existing standard drill rod without changing the appearance of the drill rod or sacrificing the internal rigidity. Especially for the bending moment distribution characteristics of the 300-meter super-long drill rod, the damping units are densely arranged in the middle section, which can effectively suppress the large swing of the drill rod and significantly improve the stability and hole forming quality of the super-long drilling.

This invention provides a vertical takeoff and landing (VTOL) payload aircraft based on the synthesis of gyro precession and inertial force, including a power cabin. A payload compartment is located on the upper surface of the power cabin, and a spare compartment is located on the lower surface. Four inertial propulsion units are symmetrically arranged inside the power cabin, forming a centrally symmetrical redundant layout. A flight control unit is mounted on the power cabin, comprising a human-machine interface platform, a main control unit, a main power module, and an inertial measurement unit. The inertial measurement unit is located on the inner top wall of the power cabin. This invention utilizes a servo motor to drive an inertial mass block to rotate at high speed, combining centrifugal inertial force with controlled gyro precession to generate lift and thrust. This completely eliminates dependence on airborne lifting surfaces, enabling the aircraft to operate stably in non-atmospheric environments such as low pressure, vacuum, underwater, and enclosed cabins, filling the gap in environmental adaptability of traditional aircraft.

This invention relates to a method for optimizing urban traffic routes using electric vertical takeoff and landing (EVTOL) aircraft. The steps are as follows: establishing constraints; initializing a population of individuals within a specified spatial range, with each individual's coordinates representing a route; calculating the fitness of each individual; calculating the inertial mass of each individual; calculating the sum of forces acting on each individual in different directions and calculating the acceleration; updating the velocity and position of each individual; selecting and replacing individuals based on the constraints; determining the termination condition; if the maximum number of iterations is met, terminating the search and outputting the optimal solution as the route optimization scheme; using the variable parameters in the obtained optimal design scheme as the final tiltrotor aircraft route. This invention comprehensively considers the economy, route length, and safety of tiltrotor aircraft routes, making urban traffic using tiltrotor aircraft more efficient and convenient.