32results about How to "Reduce stress shock" patented technology

The invention discloses a Mecanum-wheel-driven type spherical mobile robot. The robot comprises a rigid spherical shell, four automotive pneumatic rods serving as struts, a rack, two Mecanum wheels, hub motors inside the Mecanum wheels, a power supply module, a wireless charging device of the power supply module, and a main control module. The two Mecanum wheels provide two perpendicular driving forces by being symmetrically fixed on the rack and being orthogonally arranged; one ends of the four struts are fixedly connected with the rack and the other ends of the four struts are in contact with the inner surface of the spherical shell; moreover, the four pneumatic rods are uniformly distributed in the same plane vertical to the plane where the wheels are positioned and a six-point stable supporting structure is formed by the four pneumatic rods and the two wheels. The control module, a battery and the other devices are all fixed on the rack and the integral internal structure is simplified to the greatest extent. According to the invention, the internal structure of the spherical robot is simplified and energy loss of contact drive is reduced.

The invention discloses a protective cover plate at the input and output ends of a battery disconnecting unit, comprising a protective cover, wherein one end of the protective cover is rotatably connected with the upper case of a distribution box, and the other end is connected with the lower case of the distribution box through a locking mechanism. The invention also provides a high-voltage distribution box adopting the protective cover plate, comprising a protective cover, an upper case, a lower case and a battery disconnecting unit. The input and output ends of the battery disconnecting unit are arranged at the surface recess of the lower case, and the protective cover covers the input and output ends of the battery disconnecting unit. The invention can enable the user to disassemble and assemble conveniently when installing the input and output point copper bar, and the operation is convenient and saves man-hour.

The invention discloses an LED device. The LED device comprises an LED chip, a support for bearing the LED chip, a conductive bonding wire for connecting an LED chip electrode and the support as well as a packaging glue body for covering the LED chip and the conductive bonding wire, wherein the support comprises an insulation area as well as a first electric connection area and a second electric connection area which are located on two sides of the insulation area respectively, the LED chip is mounted in the first electric connection area, one end of the conductive bonding wire is located at the LED chip electrode, the other end of the conductive bonding wire is located in the second electric connection area, and the conductive bonding wire comprises a vertical section, a first bending section, a second bending section and a connecting section. The invention further discloses an LED lamp and a method for processing the conductive bonding wire of the LED device. The stress bearing capacity of the conductive bonding wire is improved by a three-dimensional structure formed by the vertical section, the first bending section, the second bending section and the connecting section of the conductive bonding wire, so that the overall service life of the device is prolonged.

The invention belongs to the technical field of semiconductor packaging, and particularly relates to application of magnetic materials as a bottom glue filling filler in an electronic packaging device, an electronic packaging device and an underfilling method thereof. The magnetic materials are taken as the bottom glue filling filler to achieve the filling of small gaps, reduce stress impact caused by large difference of the thermal expansion coefficient between a substrate and a chip and / or between a base and a mother board, improve the reliability, structural strength and the auto-dropping performance of the electronic package device.

The invention relates to the technical field of touch control, in particular to a touch control electrode, a touch control structure, a touch control display panel and a touch control display device.The touch electrode comprises a first insulating layer and a second insulating layer, the first conducting layer is formed on the first insulating layer, and the first conducting layer comprises at least one first conducting unit; the second insulating layer covers the first conducting layer, and at least one through hole is formed in the second insulating layer, so that part of the first conducting unit is exposed. The second conducting layer is formed on the second insulating layer, and the second conducting layer comprises at least one second conducting unit; and the at least one conductiveconnecting part is arranged in the through hole, and two ends of the conductive connecting part are respectively connected with the second conductive unit and the first conductive unit. According tothe scheme, the touch electrodes, the touch structure, the touch display panel and the touch display device have good bending reliability.

The invention relates to the technical field of a plunger pump, and particularly relates to a preparation method of a chemical material slurry plunger pump with composite coating, and a product thereof. The preparation method comprises the following preparation steps: performing undercutting for a part where coating of a plunger base body is, thereby reserving 0.25-0.35mm coating thickness, chamfering 40-50 degrees for a connection part between a coating edge and the base body; executing organic solvent degreasing and baking for the base body; then, performing sand blasting, using a clamp forprotecting a non-coating area; preheating the base body to 90-110 DEG C, spraying a nickel chrome bottom layer coating, wherein spraying current is 350-450A, voltage is 35-40V, and coating thickness is 0.08-0.12mm; spraying a chromic oxide coating, wherein spraying current is 500-600A, voltage is 40-50V, and coating thickness is 0.2-0.4mm; performing vacuum impregnation hole sealing, wherein impregnation time is 10-20 minutes, heating curing is executed after surface drying, and curing time is 1.5-2.5 hours; and using a grinding machine to perform grinding processing for the plunger, wherein grinding processing comprises three working procedures including coarse grinding, fine grinding and polishing. The chemical material slurry plunger pump with composite coating, prepared by the method of the invention has high corrosion resistance and abrasion resistance.

The invention discloses a solder strip for a laminated photovoltaic module, which is prepared by locally stamping a circular copper wire to form a thin, long and flat middle section and a transition section with gradually-changed thicknesses, then integrally annealing, and coating the surface with a tin-lead alloy. The invention further discloses a laminated photovoltaic module with the solder strip. Through the structural optimization and annealing treatment of the solder strip, the overall yield strength of the solder strip is reduced, and the stress impact after the solder strip is in contact with a battery piece can be reduced. The solder strip and the battery piece are connected through an adhesive, and the adhesive is cured by several times; the manufactured laminated photovoltaic module can avoid hard contact of a battery piece, a solder strip and a battery piece in an overlapping region; the thickness of the adhesive is gradually increased, especially the stress impact in the laminating process can be resisted in the overlapping area, the process fragmentation risk is reduced, the production yield of the laminated photovoltaic module is improved, the subfissure risk of thepackaged module under the action of external stress is greatly reduced, and the reliability of the module is greatly improved.

The invention belongs to the technical field of semiconductor packaging and relates to a filling method of an underfill. The method comprises the step that: a magnetic material is added into the underfill, so that a composite fill adhesive can be formed. In the filling process, an external magnetic field drives the magnetic material so as to drive the composite filling adhesive to complete the filling process. According to the method, the magnetic material is driven by the external magnetic field, and continuous attraction can be provided for the underfill, so that the movement speed of the underfill is greatly increased, the problem of the incomplete filling of a large-size chip is reduced, filling time is greatly shortened, and production efficiency is improved.

The invention discloses an air conditioner. The air conditioner comprises a variable-frequency single-rotor compressor, a reversing component, a high-pressure valve and a low-pressure valve, wherein the variable-frequency single-rotor compressor has an exhaust port and an air return port; the reversing component includes a first valve port to a fourth valve port; the first valve port is connected with the exhaust port through an exhaust pipe; the second valve port is connected with the air return port through an air return pipe; the third valve port of the reversing component is connected with the high-pressure valve through a first connecting pipe; the fourth valve port is connected with the low-pressure valve through a second connecting pipe; and after the air conditioner receives a stop instruction, and the operation frequency of the variable-frequency single-rotor compressor is reduced to f1, the variable-frequency single-rotor compressor is stopped, wherein f1 is less than 40 Hz. According to the air conditioner disclosed by the invention, the stress impact of the compressor and system pipelines can be largely reduced, the service life of the compressor and the system pipelines is prolonged, and the reliability of the compressor and the system pipelines is improved.

The invention belongs to the technical field of special engineering plastic films and particularly relates to a polyimide composite film and a preparation method thereof. The polyimide composite filmcomprises a layer A and a layer B, wherein the layer A comprises polyimide resin and inorganic filler, and the layer B comprises polyimide resin and porous particles. The preparation method includes the steps of firstly, preparing a size-stable polyamide acid gel solution A; secondly, preparing low-density buffer type polyamide acid gel solution B; thirdly, subjecting the polyamide acid gel solution A to tape casting film forming to obtain a gel film A; fourthly, coating two sides of the gel film A with the polyamide acid gel solution B; fifthly, stretching, and performing imidization to obtain the polyimide composite film. The preparation method can satisfy the processing requirements of sputtering-method adhesive-free flexible copper clad laminates. The prepared polyimide composite filmis high in double-sided copper foil binding force, high in size stability, excellent in bending resistance and the like.

The invention relates to an independent pitch changing system and a pitch changing method based on electric effective damping, which belong to the technical field of wind power generation. Its pitch system is that each of the blades has an independent pitch device, and the pitch device includes a pitch controller, a pitch driver, an electric damper and a pitch motor, and the pitch drivers are connected to the pitch controller respectively. The motor and the electric damper, the pitch controller are connected to the pitch driver, and the three pitch controllers are respectively connected to the main control controller of the wind turbine. Each blade of the wind turbine of the present invention independently changes the pitch angle according to its own control law, and by dynamically adjusting the pitch angles of the three blades respectively, each blade can obtain a different target position, reduce the dynamic balance load, and The asymmetrical rotor load compensation reduces the flapping vibration of the blades by the wind and reduces the stress impact of the transmission chain. When the wind speed is high, the variable generator torque and independent pitch angle are output to reduce the wind rotor speed and electric power fluctuations, and at the same time reduce the torque peak of the gearbox.

A power supply circuit is prepared as forming control circuit by a switch circuit and a pulse width modulation circuit, converting outside AC voltage to be DC voltage by bridge rectification circuit, outputting said AC voltage through switch circuit and isolation high frequency transformer as well as rectification-filtering circuit, receiving AC voltage by direct feedback circuit and feeding back AC voltage to pulse width modulation circuit being used to control switched-on time of switch circuit according to received feedback signal.

The invention provides a production method of a soft multi-core group ceramic capacitor. The production method comprises the steps of A welding a plurality of ceramic capacitor chips on a frame; B designing a packaging mold according to the welded structure of the frame and the ceramic capacitor chips, and printing the packaging mold through a 3D printing technology; C coating an insulating layeron the surface of the welded capacitor chips; D placing the frame and the ceramic capacitor chips processed in the step C in the packaging mold, and guiding packaging glue in for solidification to form a packaging glue layer, wherein the packaging glue layer is in a semi-solidified state; and E after demolding, coating the surface of the packaging glue layer with a protective layer. The inventionfurther provides the soft multi-core group ceramic capacitor. According to the invention, the number of the welding frame and the chips can be designed according to customer requirements, then the product appearance is reversely designed; the product appearance is enriched; the research and development period is greatly shortened; rapid mass production can be achieved; and extremely high shock resistance and environmental adaptability are achieved.

The invention is concerned with the diamond cutter head that is small cutting resistance and good tartness, includes: the inner edge of the cutter head that connects with the outside of the matrix radial of the diamond saw blade, and the outer edge of the cutter head that is the cutting functionary, sets 1 to three groove on the outer edge of the cutting edge from the radial extending direction of the outer edge to inner edge of the cutter head, the thickness of the cutter head is increase gradually. The wear of the cutter head is equal during the cutting process by the grooves, ensure the tartness of the blade namely improve the cutting efficiency, extends the using life.

The invention relates to a decompression spring suitable for an automatic injector. The decompression spring comprises a compression spring body, the compression spring body is of a variable pitch structure, the two ends of the compression spring body are respectively provided with a bottom end compression section and a top end compression section, the middle section of the compression spring body is provided with middle compression pitch sections, and the bottom end compression section and the middle compression pitch sections as well as the top end compression section and the middle compression pitch sections form a deformation section. Therefore, by means of the distribution of the middle compression pitch sections, the top end pressed section and the middle section compression pitch sections, a deformation stress transmission mode for a buffering effect is achieved, stress impact in the percussion period is reduced, and the use comfort of a user is improved. Secondary impact pressure cannot be generated when a contusion shell makes contact with the skin, and stable percussion and contusion can be achieved when the user uses the function.

The invention discloses a large solid garbage sorting machine. The large solid garbage sorting machine comprises a vertical shell, a plurality of lining plates, a discharging nozzle and a material stopper, wherein material guide plates of the vertical shell are provided with the lining plates made of wear-resistant steel; a soft and elastic buffer plate is further arranged between each lining plate and the corresponding material guide plate; linear bearings are symmetrically arranged on the two sides of the left end of an opening frame of a vibration stock bin and connected with guide shafts in a shaft sleeve mode; the left end of the discharging nozzle is inserted and connected to a feeding port in a sleeved mode; vertical guide shafts are symmetrically arranged on the two sides of the right end of the discharging nozzle; the right end of the discharging nozzle and the left end of the opening frame are attached and vertically move; a weighing sensor module of the discharging nozzle monitors the material amount of the discharging nozzle in real time; the material stopper sleeves the right end of the discharging nozzle; and the inner cavity wall of the material stopper is higher than the opening frame. The large solid garbage sorting machine provided by the invention has the effects that automatic and stable feeding is achieved, the lining plates and the buffer base plates protect the material guide face, equipment maintenance is convenient, and the use efficiency is high.

The invention discloses a roller structure used in a PET bottle conveying mechanism. It includes a roller shaft and a shaft seat. The roller shaft fixes several groups of sprockets side by side in the axial direction; the two ends of the roller shaft are equipped with shaft seats; the shaft seat is fixed on the side plate; one end of the side plate is fixed with a A top plate; a roller is fixed on one side of the side plate; a fixing seat is fixed on the other side of the side plate. The present invention realizes the transportation of the chain by adopting the sprocket wheel of elastic structure, improves the elastic stress strain, reduces the impact of the stress, and sets up the cleaning mechanism to clean the sprocket wheel to realize the cleaning of the mechanism, and adopts the roller and the chain The cooperation of the sprocket is used to stabilize the rotation rate of the sprocket and prevent the sprocket from slipping.

The invention provides a heading machine, and belongs to the technical field of engineering machinery manufacturing. The heading machine comprises a cutting part, a shovel plate part, a body part anda walking part, wherein the walking part is positioned the bottom of the body part and is connected with the body part; a rotary table is arranged on the body part; the cutting part is connected withthe rotary table and extends in a direction far away from the rotary table; the shovel plate part is connected with the bottom of the body part, and is positioned under the cutting part; the cutting part comprises a driving device, an elastic shaft coupler, a speed reducer and a cutting head; the driving device is in transmission connection with the input end of the speed reducer through the elastic shaft coupler; the output end of the speed reducer is connected with one end of the cutting head; and the driving device is connected with the rotary table and is used for driving the cutting headto do circumferential rotation. The invention aims at providing the heading machine with the advantages that the impact of high-hardness rock on the cutting part in the cutting operation process of the heading machine can be reduced; the damage probability of the cutting part is reduced; and the service life of the heading machine is prolonged.

The invention discloses an anti-shaking metal stamping device, and relates to the field of metal processing. The anti-shaking metal stamping device comprises a base and a fixed frame body, and further comprises a stamping device and a driving device; the stamping device comprises a female die fixedly mounted on the fixed frame body and a male die movably mounted on the fixed frame body, and the stamping device is used for conducting stamping machining on metal raw materials through cooperation of the male die and the female die; and the driving device comprises a connecting component rotationally installed on the fixed frame body and a driving component fixedly installed on the fixed frame body, and the driving component is used for driving the connecting component to rotate on the fixed frame body so as to drive the male die to slide on the fixed frame body in a reciprocating manner. The anti-shaking metal stamping device is simple in structure, when the whole anti-shaking metal stamping device conducts continuous stamping operation on the metal raw materials, a buffer component effectively reduces stress impact on the male die, then the stability of the whole anti-shaking metal stamping device in the stamping process is improved, and the situation that the whole device shakes due to rigid impact in the stamping process is effectively prevented.