34results about How to "Avoid twisting and bending" patented technology

The invention provides a multi-vibrator rotary piezoelectric motor which comprises an upper end cover (3), a lower end cover (17), a radiating enclosure (15), a driving shaft (1), more than one piezoelectric power unit and piezoelectric drivers, wherein the power and torsion of the motor can increase along with the increase of the number of the piezoelectric power units; wherein the piezoelectric drivers respectively adopt an even number of vibrators, and each rectangular piezoelectric driver is provided with four rectangular piezoelectric ceramic plates and is novel in structure; a pretightening unit is unique and ensures that the pressures applied to the rectangular piezoelectric drivers are uniform; a piezoelectric vibrator frequency tracking technology is adopted, so that multi- vibrator fuzzy synchronization is realized, and each piezoelectric vibrator is ensured to be at respective resonant vibration frequency; and the driving shaft and a rotor are respectively provided with four symmetrical spline slots for connection, so that the driving accuracy between the rotor and the driving shaft is met, and the verticality of the rotor and the driving shaft is ensured, The invention provides a high-power piezoelectric motor, wherein when two piezoelectric power units are arranged, the power of the motor is 33.6W, and the torque of the motor is 3.5N.m.

The invention discloses a vehicle front column assembly and an automobile. The vehicle front column assembly comprises an upper reinforcing plate, a lower reinforcing plate, an upper hinge plate, a front column supporting plate, a lower hinge plate and a front wall supporting plate, wherein the upper reinforcing plate and the lower reinforcing plate are independently molded and connected with eachother; the upper hinge plate is arranged on the upper reinforcing plate; the front column supporting plate and the lower hinge plate are independently molded and connected with each other; the frontcolumn supporting plate is connected to one side, facing away from the upper reinforcing plate, of the lower reinforcing plate; the lower hinge plate faces away from the lower reinforcing plate; and the front wall supporting plate is connected to the connecting part of the lower hinge plate and the front column supporting plate. The automobile comprises a front wheel cover side sill outer panel and the vehicle front column assembly; and the upper reinforcing plate and the lower reinforcing plate are both connected with the front wheel cover side sill outer panel in a laminated manner. According to the vehicle front column assembly and the automobile, the anti-bending capacity of a front column during high speed frontal collision or biasing collision is improved, the stress is effectively dispersed, the deformation of the front column during high speed frontal collision or biasing collision is reduced, the stability of the front column is kept, and the safety of the whole automobile isenhanced.

The invention discloses a display panel and a display device. The display panel includes a substrate, the substrate includes a binding area, and a bending area connected to the binding area; it also includes a supporting block corresponding to the bending area and the binding area, and the supporting block is arranged on the side of the substrate away from the display surface; The maximum thickness of the support block in the fixed area is greater than the maximum thickness of the support block located in the bending area. The solutions of the embodiments of the present invention reduce the risk of wire breakage in the bending area of ​​the display panel, thereby improving the yield rate of the display panel. At the same time, the supporting block located in the binding area partly replaces the raising block in the prior art, avoiding additional setting of the raising block, so there is no need for alignment during lamination, which reduces the difficulty of lamination.

The invention relates to a drawer capable of being locked at any position. The drawer comprises a drawer body, a drawer wallboard and a locking device, wherein the locking device comprises a lock tongue mechanism, a button mechanism, a wire cable and a rack which is fixed on the drawer wallboard and is arranged along the entire slide distance, the lock tongue mechanism comprises a lock tongue, a spring and a guide block which is fixed on the bottom edge of the drawer body, an open groove facing the rack is formed in the guide block, both the lock tongue and the spring are arranged in the open groove, the lock tongue is adjacent to one side of the rack, the button mechanism comprises a supporting seat which is fixed on a drawer body front baffle plate, a guide sleeve which is arranged on the supporting seat, an oscillating arm which is rotatably fixed on the supporting seat and a button which is arranged inside the guide sleeve, the head of the button is matched with the guide sleeve, the tail part of the button penetrates through the supporting seat to point to the oscillating arm and always contact the oscillating arm, and two ends of the wire cable are respectively fixed on the oscillating arm and the lock tongue. The drawer can be locked and unlocked at any position and is convenient to operate, reliable to lock and low in cost.

The invention discloses a detection and sampling device for urea-formaldehyde resin in melamine tableware, which includes a driving part, a grinding part, an air injection part and a rotating tube with perforations, and the grinding part includes an upper plate and an outer cone with the small end facing downwards. Grinding cover, the small end of the outer conical grinding cover is sealed, the upper end of the outer conical grinding cover is fixed and sealed with the side of the upper plate, and the upper plate is provided with an air outlet connected to the inner cavity of the outer conical grinding cover. There are several grooves on the outside of the grinding cover, the upper plate is connected to the lower end of the rotating tube, and the perforation of the rotating tube communicates with the inner cavity of the outer tapered grinding cover. The gas injection part includes a rotary joint, a conduit and an air pump. On the upper end of the rotating tube, and the rotary joint and the air pump are connected through a conduit; the urea-formaldehyde resin detection and sampling equipment in the melamine tableware reduces the temperature of the grinding parts and the sampling position of the melamine tableware through the flowing air, and avoids the thermal hydrolysis of the urea-formaldehyde resin , Improve the detection accuracy of urea-formaldehyde resin.

The invention discloses a cover plate glass platinum channel thermocouple device and a manufacturing method thereof. A thermocouple is extended and straightened and then is subjected to double-layer cladding, so the fact that the surface of the thermocouple is not corroded by harmful foreign matters is guaranteed, bending and distortion of the thermocouple in the cladding process can be effectively avoided, and the strength reduction of the thermocouple caused by bending and distortion of the thermocouple which is collided by external force is avoided; a mould with the structure the same as that of the cladded thermocouple is put into a thermocouple mounting hole, the lower half part in the thermocouple mounting hole is poured, and the mould is taken out after the lower half part pouring layer is coagulated; the cladded thermocouple is put on the lower half pouring layer in the thermocouple mounting hole, so the fact that the thermocouple is not damaged by extrusion is guaranteed, and the bending and distortion of the thermocouple in the pouring process is avoided; the cover plate glass platinum channel thermocouple device is fixed, stable and insusceptible to deformation through once pouring and fixing, and the extrusion force, generated by thermal expansion, of the platinum channel is counteracted by the cladding layer cladding the thermocouple.

The invention discloses a crankshaft for a compressor, which belongs to the technical field of crankshafts and comprises a crankshaft. The crankshaft includes a short shaft, an eccentric part and a long shaft. The top of the eccentric part is fixedly connected with a short shaft, and the bottom of the eccentric part is fixedly connected. There is a long axis, and the long axis is hinged by twisted strip A and twisted strip B. The twist-shaped long shaft has a high structural strength and can withstand large torsional stress. It is not easy to generate torsional stress on the long-term high-speed rotating surface It is bent, twisted or broken to prevent the long axis from being bent, twisted or broken due to long-term high-speed rotation. The short axis and the outer wall of the eccentric part are fixedly connected with triangular saw teeth, and an inverted triangle oil groove B is formed between the triangular saw teeth. An integrated oil groove is formed on the surface of the shaft, and the triangular structure has a high strength to prevent the crankshaft from breaking due to the oil groove on the surface of the crankshaft affecting the structural strength of the crankshaft. A steel wire runs through the inside of the crankshaft to further increase the structural strength of the crankshaft.

The invention provides a mold plunger chip stretching and drawing type punching mechanism, and belongs to the technical field of metal forming. The mold plunger chip stretching and drawing type punching mechanism comprises an upper roller, an upper punching roller wheel and a stretching and drawing plunger chip component. The upper punching roller wheel and the upper roller are rigidly connected. A rotating connector is arranged at one end of a rigid air pipe. The stretching and drawing plunger chip component is arranged in the upper punching roller wheel in an equal-distance and equal-angle mode. A first adjusting block of the stretching and drawing plunger chip component is arranged in a first sliding groove of the upper punching roller wheel in a radially slidable mode, and a second adjusting block is arranged in a second sliding groove of the upper punching roller wheel in an axially slidable mode. A first inclined surface of the first adjusting block is attached to a second inclined surface of the second adjusting block, a plunger chip is arranged in a third sliding groove of the upper punching roller wheel in a radially slidable mode, and a fourth inclined surface of the plunger chip is attached to a third inclined surface of the second adjusting block. An air cylinder is fixedly arranged in the upper punching roller wheel and connected with the rotating connector through a flexible air pipe, and a piston rod of the air cylinder is connected with the first adjusting block. According to the mold plunger chip stretching and drawing type punching mechanism, the purpose that the plunger chip stretches out and draws back can be achieved, adjustment of the punching position of a corrugated sheet can be achieved, and the structure is reasonable.

The invention discloses a cable joint explosion-proof box of a new type of fire extinguishing medium. The shell of the explosion-proof box is provided with a temperature-lowering fire-extinguishing device that can be automatically triggered. The fire extinguishing medium is used to cool down and extinguish the fire, so as to prevent the occurrence of danger and greater economic losses in time. The key points of the technical solution are: including the housing, the cooling and fire extinguishing device and the triggering device, the middle of the housing is raised, and a chamber is formed inside, and the two ends of the housing are left with first openings for cables to pass through; the cooling and fire extinguishing device includes a fire extinguishing medium , container and inert gas bottle, the fire extinguishing medium is liquid at normal temperature, and it vaporizes rapidly when heated; the container is provided with a spout that can be opened and closed, and there is high-pressure inert gas in the inert gas bottle, and the inert gas bottle is connected to the container through a pipeline, and the inert gas A valve is provided between the bottle and the container; the trigger device includes a detection mechanism and a control mechanism, and the control mechanism is coupled to the detection mechanism and the valve at the same time.

The invention provides a connecting head for connecting metal pipes. Two metal pipes are connected by the connecting head through the connecting head. The thread and the internal thread are respectively connected at both ends of the connecting bolt. The metal pipe is processed by extruding the inner flanging to form the inner shrinkage. While extruding the inner flanging, the thickness of the inner flanging increases, so that the connecting end of the metal pipe end is integrally formed with the metal pipe, which is convenient for raising the metal pipe end. The strength of the structure is convenient to improve the connection strength between the connecting bolts, which can effectively prevent the metal pipe from loosening or breaking between the connecting bolts, and facilitate the improvement of the connection sealing effect.

The invention relates to the technical field of unmanned aerial vehicles, and discloses an unmanned aerial vehicle test platform, which includes a flange, a rotating bearing, a base and a conductive slip ring. There are mounting holes on the flange for installing the UAV; the flange is installed on the base through a rotating bearing; the conductive slip ring includes a rotor end and a stator end, the rotor end is electrically connected to the UAV, and the stator end is connected to the base . The rotation of the rotating bearing provides the UAV with the degree of freedom required for yaw motion testing; the UAV is connected to the power supply and signal receiving device through a conductive slip ring, so that the UAV can get rid of the limitation of its own limited battery capacity and overcome It overcomes the shortcomings of its own wireless transmission rate, which is slow and susceptible to interference, and can send and receive information efficiently and accurately; the rotor end and stator end of the conductive slip ring can rotate relatively, avoiding the bending and twisting of the transmission wire. The invention provides an efficient and reliable test platform for the unmanned aerial vehicle's yaw movement, and has simple structure, convenient operation and strong practicability.

The invention discloses a rectangular steel pipe row shear wall structure with vertical gaps. It is mainly composed of a plurality of vertically arranged rectangular steel pipes closely arranged horizontally and horizontally. The adjacent rectangular steel pipes are connected by connecting welds arranged at intervals, and the connecting welds at the junction of the steel pipe flange and the web Two adjacent steel pipes are connected. The vertical discontinuity of the connection weld forms a vertical gap between the rectangular steel pipes, and the rectangular steel pipes between the parallel vertical gaps form a small bending column, which bends and deforms under the action of the lateral load, so that the shear wall is under load. The plastic hinge formation at the end of the lower flexural column occurs before the overall instability of the shear wall, the out-of-plane instability of the flexural column and the local instability of the steel pipe wall. The invention has the characteristics of large anti-lateral bearing capacity, large out-of-plane rigidity, large anti-lateral rigidity, good seismic performance, good ductility, full energy consumption hysteresis loop and the like.