60results about How to "Reduce inertial effects" patented technology

The present invention discloses a method for preventing load impact during the lifting process of a crane hook, which comprises the following steps that 11) the relevant detection data of a steel wire and the hook are obtained at real time to be used for calculating the current data of the discharged length and speed of the steel wire and the height and speed of the hook; 12) a deceleration distance is calculated according to the current hook speed and a read hoisting acceleration; 13) judging if the hook enters a targeted decelerating area, the step 14) is processed, otherwise, the step 11) is processed; 14) if the hook is judged not arriving at a braking position, the step 15) is processed, otherwise the step 16) is processed; 16) a stop instruction is sent, and the hook is braked by a power transmission system. The present invention also discloses a device which prevents the load impact during the lifting process of the crane hook.

A positioning device for positioning an object table relative to a reference frame with a drive unit including a first part connectable to the reference frame and a second part for holding the object table is described. The drive unit is constructed to displace the object table in a first direction by generating a force in the first direction on the second part, and a torque acting on the second part about an axis substantially perpendicular to the first direction such that the resulting force of the force and the torque is directed substantially through the center of gravity of the assembly including the object table and the second part.

The invention discloses an intelligent sample collecting device which comprises a machine frame. The machine frame is provided with a feed inlet. A rotatable rotating disc mechanism and multiple sample storage barrels used for collecting samples are arranged in a collecting cavity formed by the machine frame. The sample storage barrels are hung on the rotating disc mechanism. Each sample storage barrel is provided with a hinged barrel cover and an induction locking mechanism used for locking the barrel cover. The hinged position of the barrel cover is provided with an elastic part so that the barrel cover can bounce upwards to be opened when not locked. The feed inlet is provided with a liftable weighing mechanism. The weighing mechanism is provided with an induction unlocking assembly matched with the induction locking mechanism. When the rotating disc mechanism drives the sample storage barrels to rotate to the position below the feed inlet, the weighing mechanism raises to lift up the sample storage barrels, so that the induction locking mechanism induces an unlocking signal of the induction unlocking assembly to open the barrel covers for sample connection and weighing operation. The intelligent sample collecting device has the advantages that the structure is simple and compact, the intelligence degree is high, sample collection and transfer safety is high, sample collection quality precision is high, working efficiency is high, and the production cost is low.

The invention relates to a butt joint-precise inductor assembly machine. The machine comprises a frame and a power distribution control box; the frame is provided with a conveying device; an iron sheet inserting device, a pressing ring device and an iron core inserting device are arranged above the conveying device in sequence; the conveying device is matched with a positioning device; the positioning device includes a positioning base arranged on a conveying base; the positioning base is provided with a positioning lifting cylinder; the positioning lifting cylinder is provided with a positioning lifting block matched with a positioning lifting slide rod on the positioning base; and the positioning lifting block is provided with a positioning pin matched with a positioning pin sleeve arranged on a conveying carrier. The machine is provided with the positioning device in the conveying device; and through insertion matching between the positioning pin arranged on the positioning lifting block and the positioning pin sleeve arranged on the conveying carrier of the conveying device, the conveying device stops conveying, the inertia influence is eliminated, the butt joint precision between the conveying carrier and each assembly part is improved, and the yield is largely increased.

The invention relates to a Method for calculating a local extremum, preferably a local minimum, of a multidimensional function E(x₁, x₂, . . . , x_n) which is interpretable as a function of potential energy with spatial coordinates (x₁, x₂, . . . , x_n), using an iteration process based on a molecular dynamics based quenching method comprising the following steps:

a) Calculating a trajectory X(ti) at discrete times t_i=Σ_iδt_i starting from an assigned initial coordinate X(0) on basis of a gradient f_k=δE/δx_k with k=1, . . . ,n and a time derivatives of the coordinates v_k=dx_k/dt using f_xk=m_xk dv_xk/dt in which m_xk represent masses at the spatial coordinates and v_xk=dx_k/dt represents velocity

b) Performing a molecular dynamics based quenching method for analysing said function E(x₁, x₂, . . . , x_n) of existence of a local extremum, in case of reaching a local extremum abort processing and/or select a new initial coordinate and proceed further from step a)

c) Calculating at each iteration time step δt_i

• • F=(f_xk) and (k=1, . . . ,n) representing a global force vector field acting in the spatial coordinates,
  • V=(v_xk) representing a velocity vector field, P=F·V representing power Setting V=(1−α)×V+α×(F/|F|)·|V|
  • α is a dimensionless variable and amounts a given initial value α_start at first iteration time step
  • In case of P<0: V is set to zero, α becomes α_start, δt_i will be reduced and return to step b)
  • In case of P≧0: Analysing whether the number of conducted iteration steps since the last detected case of P<0 exceeds a given minimum number N_min, in case of “no” returning to step b) and in case of “yes” increasing δt_i, decreasing α and return to step b).

The invention discloses a fixing device. The fixing device comprises a U-shaped fixing frame body (1), a vibration reduction ball (2), a cradle head anti-shedding assembly (3) and a self-locking belt, and is mainly applied to fixation of an ADC Micro multispectral camera on a DJI phantom 2 vision+ aerial photography aircraft. A rectangular square hole is formed in the bottom of a U-shaped fixing piece, and through the rectangular square hole, a camera lens of the ADC Micro multispectral camera can take a photograph; circular holes are formed in the bottom, and are matched with the anti-shedding assembly to fix the camera; the vibration reduction ball can select different damping values as needed so as to realize vibration reduction protection; grooves are formed in U-shaped positions on two sides, so that the camera is convenient to fix through an erected table on a DJI phantom 2 vision+ aircraft bracket by fixing the belt; the U-shaped fixing frame body is made from stainless steel plates of 1-2 mm, and coated with antirust film layers. The fixing device disclosed by the invention is high in pertinence, safe and reliable, and convenient to use.

An actuator positions a movable portion including a lens in a first direction (Z-axis direction). An acceleration sensor generates first acceleration information ACC that indicates the acceleration applied to the image capture apparatus in the first direction. An actuator driver IC superimposes a correction value that corresponds to the first acceleration information on a base instruction value that corresponds to the target position to be set for the lens in the first direction. The actuator driver IC controls the actuator according to a corrected instruction value thus obtained.

The invention relates to a method or equipment for erecting or assembling a bridge, in particular to a horizontal-moving device for mounting a cable saddle. The horizontal-moving device is erected ontwo portal frames of a cable tower and comprises a cross beam and an electric hoist, and the electric hoist is connected to the lower portion of the cross beam. The horizontal-moving device is characterized in that guiding grooves are fixedly formed in the upper portions of the two portal frames and are mutually parallel, sliding blocks are fixedly connected to the lower portions of the two ends of the cross beam correspondingly, and the two sliding blocks are in sliding fit with the guiding grooves; and traction mechanisms used for pulling the cross beam to slide along the guiding grooves arefixedly arranged on the two portal frames correspondingly. According to the horizontal-moving device for mounting the cable saddle, the sliding form between the cross beam and the portal frames is changed from rolling friction into sliding friction, thus the friction force between the cross beam and the portal frames is increased, the influence of inertia during moving of the cross beam is reduced, and the effect that the mounting position of the cable saddle is positioned simply and precisely is achieved; and meanwhile, the structure of the cross beam is simplified, and the cost and mountingdifficulty of the cross beam are reduced.

The invention relates to a device capable of preventing inertia swing of an unmanned overhead crane clamp. The device is composed of a trapezoid cover connecting beam, a trapezoid cover, a trapezoid plug and a trapezoid plug connecting beam which are sequentially arranged from top to bottom; the lower end of the trapezoid plug connecting beam is fixed to the unmanned overhead crane clamp, and the upper end of the trapezoid plug connecting beam is fixedly connected with the trapezoid plug; and the upper end of the trapezoid cover connecting beam is fixed to the bottom of a trolley of an unmanned overhead crane, the trapezoid cover is fixed to the lower end of the trapezoid cover connecting beam and corresponds to the trapezoid plug, and internal space of the trapezoid cover is matched with the shape of the trapezoid plug. According to the device, the trapezoid plug and the trapezoid cover are used for connecting the clamp at the high position with the trolley of the unmanned overhead crane, and therefore flexible connection between the clamp and the overhead crane through a steel wire rope is converted into rigid connection, synchronous operation of the clamp and the trolley in the overhead crane variable motion process is guaranteed, the clamp swing angle is prevented, stable running of the unmanned overhead crane is guaranteed, and the working efficiency of the overhead crane is improved.

The invention discloses a dual-drive differential positive and reverse rotation transmission and multi-speed change device comprising a shell, a power mechanism, a first bevel gear, a second bevel gear, a locating shaft fixedly arranged in the shell, a first differential wheel, a second differential wheel and a planet wheel, wherein the first bevel gear and the second bevel gear are driven by thepower mechanism, the first differential wheel and the second differential wheel are rotationally connected to the locating shaft, the planet wheel is arranged between the first differential wheel andthe second differential wheel, the side, far away from the planet wheel, of the first differential wheel is meshed with the first bevel gear, the side, far away from the planet wheel, of the second differential wheel is meshed with the second bevel gear, the planet wheel comprises a power rotation ring on the outer side and three rolling bevel gears located inside the power rotation ring and rotationally connected with the power rotation ring, and the three rolling bevel gears are evenly distributed along the inner circumference face of the power rotation ring. The dual-drive differential positive and reverse rotation transmission and multi-speed change device has the effects of improving reversing speed of a positive and reverse rotation transmission device, solving the reversing pause problem existing during brake starting and improving the accelerating speed after reversing.

A release liner staging unit for depositing a release liner onto an adhesive layer. The unit includes an accumulator that creates a buffer between an amount of release liner supplied and an amount needed for covering a layer of adhesive. The tendency of release liner placed within the accumulator to settle allows additional release liner to be introduced, thereby producing a slightly saturated level of release liner in the accumulator. Time delays can be accounted for to reduce the number of times a drive mechanism needs to operate, thereby reducing wear on such componentry. The unit may also form part of a larger release liner application device and adhesive application system.

The invention discloses a limit device for an electric furnace transformer body. The limit device comprises a box body, a transformer body is arranged in the box body, and clamping plates are arrangedon the two sides of the transformer body; attraction plates are arranged on the front and back side surfaces of the transformer body and are made from magnetic materials, springs are arranged on thesurfaces of the adsorption plates, and connecting rods are arranged at the ends of the springs; limit blocks are arranged at the ends of the connecting rods, a limit groove is formed in the inner wallof the box body, and the limit blocks are arranged in the limit groove. By arranging the springs, when the box body is subjected to the inertia, one of the front and back springs of the transformer body pulls the box body, the other spring pushes the box body, the inertial influence can be reduced, a buffer cushion made from rubber materials can have a buffering effect, the inertial influence isfurther reduced, and the improvement of the safety of transporting is facilitated.

The invention relates to the technical field of conveying devices, in particular to a dual-motor wire conveying device for an FDM printer. The dual-motor wire conveying device comprises a short-rangeextrusion structure, a long-range conveying structure, a spray head, a wire tray, a wire and a wire guide pipe. The short-range extrusion structure and the spray head are connected, the other end of the short-range extrusion structure is connected with the wire guide pipe, and the wire penetrates through the wire tray, the long-range conveying structure and the wire guide pipe, is subjected to thepulling force provided by the short-range extrusion structure and passes through the spray head. Accordingly, printing is more stable, printing quality is improved, the weight of the short-range extrusion structure is reduced, the influences of inertia on high-speed printing conditions are reduced, stability of precise control over movement of the spray head is improved, and printing time is shortened.

The invention provides a two-position adjusting method for a temperature control method based on passive variable thermal resistance. A semiconductor temperature difference module for realizing passive variable thermal resistance is arranged between a temperature control object and an environment where the temperature control object is located, and the maximum thermal resistance and the minimum thermal resistance are controlled through two-position adjustment according to acquired temperature signals, so that the heat flow is changed, and the temperature control is realized. The two-position adjusting method is low in cost, easy to realize and high in cost performance; two-position control of the semiconductor temperature difference module is combined, no moving part and no deviation areaare provided, and the control precision is higher; if the two-way active temperature control of the semiconductor refrigeration is matched, the temperature control precision can be further improved through the variable heat resistance. According to the two-position adjusting method, the temperature control precision can be effectively improved, and the two-position adjusting method can be widely applied to high-precision temperature control in different temperature areas.

The invention provides a walking vehicle for preventing old people from falling down, belonging to the field of medical instruments. The walking vehicle comprises a frame and a hanger, wherein the hanger is hung on the frame and located in the middle of the frame, the frame comprises an upper part and a lower part, the upper part and the lower part are connected through a vertical beam, the lower part is a movable protection part, the upper part is a supporting protection part, the movable protection part comprises a lower wheel carrier, a suspension arm, a front guide wheel, a rear wheel arm and a rear supporting wheel, and the lower wheel carrier is of a C-shaped structure. According to the invention, snub braking of the walking vehicle can be formed, and inertia influence is reduced; and a half-wrapping type structure is adopted, and a front opening is formed, so gravity center adjustment of walking exercise can be facilitated.