154results about How to "Not easy to distort" patented technology

The invention discloses a computer-controlled servo 3D bayonet tufted carpet machine which comprises a group of front and rear racks which stand opposite to each other, wherein the front rack is provided with a cloth locking mechanism for supporting and binding the corners of carpet base cloth, and the rear rack is provided with a displacement mechanism; a tufting head is arranged on the displacement mechanism towards the front rack, and the touch surface of the tufting head involves the whole region in the front rack under the condition that the tufting head is driven by the displacement mechanism. The rack is vertically arranged and is divided into two, and the rack is flexibly arranged and is convenient to move; the whole size of the rack is not changed, but a large part of space is occupied aloft, and the landing area is smaller. Only one tufting head can move and tuft in the whole range of the carpet base cloth, and is widely suitable for various different carpet twines, the speed is relatively high, the precision is improved, the details of the original carpet pattern is shown easily, the finished carpet pattern product is lossless, and more importantly, a carpet with a stereoscopic 3D effect can also be woven.

The invention belongs to the technical field of Internet teaching and provides an original handwriting writing same-screen display method and system. The method comprises the steps as follows: an input client receives a handwriting input instruction of a first user; a display client receives a handwriting display instruction and stops receiving the handwriting input instruction of a second user; the input client collects position information, time information and a pressure value corresponding to the input handwriting, and obtains a stroke structure of the input handwriting and the motion speed of the input handwriting; a stroke width of the input handwriting is obtained according to the pressure value and the motion speed of the input handwriting and a data package with a predetermined format is transmitted to the display client by a server; and the display client unpacks the data package with the predetermined format and displays the stroke structure of the input handwriting and the stroke width of the input handwriting. According to the original handwriting writing same-screen display method and system, the written handwriting can be collected in real time and synchronously displayed on a plurality of display screens, so that the cooperation efficiency is improved and the paper resource is saved.

The invention discloses a rapid inspection method for bridge bottom damage positions. The method includes the steps: determining a left observation point and a right observation point at the bridge bottom, and determining a left initial measurement point and a right initial measurement point on the bridge axis; respectively measuring relative distances among different observation points and different initial measurement points; measuring the relative distances among different observation points and damage points; and computing the damage point positions according to all measurement results. The invention further discloses a rapid inspection system for the bridge bottom damage positions, and the system is capable of realizing the inspection method. The method adopting underbridge indirect measurement is easy, feasible, accurate in measurement results and simple and rapid in operation and the inspection system is simple and easy to operate and can be applied to bridge bottom damage inspection.

The invention relates to a foldable parking stop frame, which comprises a fixing plate (1), a stop plate (5) and a regulating plate (8), wherein one end of the stop plate (5) is hinged with one end of the fixing plate (1) through a pin shaft (2), and the other end of the stop plate (5) is hinged with one end of the regulating plate (8) through a hinge pin shaft (6). The invention is characterized in that a groove-shaped plate (10) is respectively arranged at two side edges of the fixing plate (1), a guide groove (12) is horizontally formed on each groove-shaped plate (10), cylindrical pines (9) are fixed at both sides of the other end of the regulating plate (8) correspondingly to the guide grooves (12), and the two cylindrical pins (9) are respectively clamped in the guide grooves (12). The invention has the advantages of simple structure, small occupied space after the foldable parking stop frame is folded, good lateral stability and difficult distortion and deformation, small space can be occupied after the foldable parking stop frame is folded, a slippage stop plate has the antitheft effect, a hand lifting hole is formed on the slippage stop plate, the weight is effectively reduced, at the same time, the foldable parking stop frame can be conveniently held by hand, and the use is very convenient.

The invention discloses a horizontal processing machine. A machine base is provided with a top face and a side face, and a top face frame of the machine base is provided with a main axle base so as to mount a main horizontal processing axle; at least one displacement mechanism drives the main axle base and the main processing axle to perform the displacement movement on at least one horizontal direction; bottom part of a workbench of which top face supports a work piece is provided with a lifting base so as to erect at the side face of the machine base, and a lifting mechanism drives the workbench to perform the displacement movement on a vertical direction; hereby, the main axle base and the main processing axle are directly erected on the top face of the machine base, the workbench is erected at the side face of the machine base and the top face supports the work piece on the vertical direction, so that the overall framework configuration can effectively reduce the cantilever beam effect of a machine table; furthermore, the main axle base and the workbench stably perform the processing feeding displacement on every axial direction, so as to reach the practicable benefit of greatly promoting the processing precision and the stability.

The invention provides a tobacco box. The tobacco box comprises an upper box body and a lower box body, the upper box body is provided with a first opening end and a second opening end which are oppositely arranged, the lower box body is provided with a third opening end, and the second opening end and the third opening end are hermetically and fixedly connected to form the tobacco box. The upper box body and the lower box body are molding parts, the tobacco box is 700 cm by 700 cm by 700 to 1300 cm by 1300 cm by 1300 cm and is applicable to the fields of automatic production lines and storage and transport and the like; the tobacco box is manufactured by molding, industrial batch production is easy to realize, production cost can be reduced, and the tobacco box has high functional expansibility.

The invention discloses a holographic projection box and an imaging method and an interaction method thereof. The holographic projection box comprises a box body, an imaging film arranged in the box body, and a support cover plate arranged on the top surface of the box body. An opening used for watching imaging pictures is arranged in one side of the box body. A tablet computer is arranged on the support cover plate, and an opening through which a screen of the tablet computer projects the images is arranged in the support cover plate. The tablet computer provides a light source for the imaging film through the opening. A plurality of background plates are arranged in the box body. The imaging method comprises the steps of: combining the holographic projection box and the tablet computer, imaging the images or video of the tablet computer on the background plates in the box body through the imaging film, and forming a stereo picture. The interaction method comprises the steps of: identifying a card through a scanning function of a preposition pick-up head of the tablet computer, and cooperating with an APP application program to realize the data interaction. According to the invention, the imaging and film-watching effects are good, and the operation is convenient and flexible.

The invention relates to a rolling mill with a speed measuring and pressure regulating structure, and aims to solve the problems of high probability of distortion in speed measurement and insufficient tension of the rolling mill existing in the prior art. The rolling mill comprises a working roll set, wherein deflector rolls are symmetrically arranged on the two sides of the working roll set; strip steel penetrates through the working roll set and is arranged on the deflector rolls; a first tension roll and a second tension roll are arranged on the side, towards the working roll set, of each deflector roll side by side from outside to inside; the first tension rolls and the second tension rolls are positioned on the lower part of the strip steel; one end of a rotating shaft of each first tension roll is provided with a section of extension shaft; an encoder is arranged on each extension shaft; a pressure roll is arranged between each first tension roll and the corresponding second tension roll, is pressed on the upper surface of the strip steel and is provided with a tension regulating structure. The rolling mill has the advantages that acquired speed signals are truer and are more unlikely to distort by arranging the encoders on the first tension rolls, and the tension on the strip steel can be kept by arranging the tension regulating mechanisms to prevent the problem of influence on steel coiling by steel lamination due to tension loss.

The invention relates to a gob-side entry retaining roadside support system and a construction method thereof. A rhombic steel bar net is arranged on one side of a gob, an air drum cloth is laid on the inner side of the rhombic steel bar net, light aggregate concrete is adopted to perform guniting treatment on the air drum cloth and the rhombic steel bar net, a windtight light aggregate concrete spray layer is formed on the side of the gob, the thickness of the light aggregate concrete spray layer is 200-500 mm, and the other side of the light aggregate concrete spray layer is close to a steel tube concrete pier stud supporting device. A steel tube concrete pier stud is formed by filling an empty steel tube with concrete; through a restraint effect of a steel tube casing, internal concrete is in a three-dimensional stressed state, the geometrical stability of the steel tube wall is enhanced, and the bearing capacity of the steel tube concrete pier stud is improved. According to the gob-side entry retaining roadside support system, a top plate can be supported in high strength, coal mining efficiency is effectively improved, and an operation environment in a roadway is improved; the steel tube concrete pier stud can be recycled through a special thrust device, and the roadway retained cost is reduced.

The invention discloses a current transformer which comprises an iron core, primary winding and secondary winding. At least one air gap arranged along a magnetic field line cutting direction is arranged on the iron core, and the sectional area of the iron core is 0.5cm<2> to 3.5cm<2>. The number of turns of the primary winding is 1 turn to 25 turns, and the sectional area of coils of the primary winding is 0.5mm<2> to 4mm<2>. The number of turns of the secondary winding is 10001 turns to 30000 turns, and the diameter range of the coils of the secondary winding is 0.05mm to 0.3mm. The current transformer has the advantages that when a primary current rises to 20 times to 6o times of a rated current, the current transformer can accurately transform direct current components with decay time constant of 20ms to 200ms, and can truly reflect a nonperiodic decay state, output waveforms of the current transformer are difficult to be saturate and are not distorted, and the trailing phenomenon generated by secondary waveforms after fault removal can be further eliminated.

The invention discloses a current pulse circuit embedded with a nerve stimulator. The current pulse circuit comprises a microprocessor, a first inductor, a first diode, a second resistor, a fifth resistor, a filter capacitor, a boost-buck DC-DC (direct-current-direct-current) chip, a first circuit output terminal and a second circuit output terminal, wherein the first circuit output terminal is grounded through the second resistor and the fifth resistor; the boost-buck DC-DC chip comprises an error amplifier, a PWM (pulse-width modulation) comparator, a switching tube, an SR trigger and an oscillator; the common terminal of the second resistor and the fifth resistor is connected into the first inverting input terminal of the error amplifier; the non-inverting input and output terminals of the error amplifier are respectively connected with reference voltage and the inverting input terminal of the PWM comparator; the oscillation output of the oscillator is connected with the non-inverting input terminal of the PWM comparator; the oscillator outputs a switching signal to the terminal S of the SR trigger; the output terminal of the PWM comparator is connected with the terminal R of the SR trigger; and the output terminal Q of the SR trigger is connected with the control terminal of the switching tube.

The invention discloses an express box which comprises a box body with an upper opening and an upper cover. A hollow support and an inflatable air bag around the support are movably arranged in the box body, and a channel for the inflatable air bag to expand inwards is formed in the support. The express box has the advantages of good shock absorption and buffering effect, high reliability and reusability.

The invention discloses a dimming control circuit and a control method thereof, and the dimming control circuit comprises: an excitation conversion circuit which generates an excitation signal; an isolation circuit which comprises a primary side winding and a secondary side winding, wherein the primary side winding of the isolation circuit is connected with the excitation conversion circuit, receives the excitation signal and transmits the excitation signal to the secondary side winding of the isolation circuit; and a rectifying circuit, wherein the input end of the rectifying circuit is connected with the secondary winding of the isolating circuit, the output end of the rectifying circuit is connected with the dimmer, and the excitation conversion circuit comprises an excitation module, the excitation module comprises a power supply voltage and a first current source, a first end of a primary winding of the isolation circuit receives the power supply voltage, and the first current source is connected between a second end of the primary winding of the isolation circuit and a first grounding end to generate an excitation signal. The constant current source is adopted to generate theexcitation signal, power can be stably supplied to the dimmer, and the circuit is simple in structure and low in cost.

The invention provides a method and a system for measuring a tire. The method comprises steps of by detecting positions of a target installed on a tire of an automobile, once the position of the target on the tire of the automobile is in a shooting region, acquiring a moving image of the tire; judging feature points of the image, carrying out further analysis according to the feature points of the image and turning to measure the angle of the tire of the automobile, thereby achieving effects that angle measurement can be carried out on the tire of the automobile with no need for stopping operation of forward and backward pushing of the automobile or left and right turning of a steering wheel during a moving process of the automobile; and then, during the measuring process of the tire, requiring images without a stop, extracting feature points for analysis so that obtained data is not liable to distort, and carrying out all-directional measurement on movement and all angles of the tire of the automobile.

The invention relates to a geothermal equipment which comprises upper heating layer, lower heating layer, heating groove, heat conductive rod and heat conductive pipe. The heat conductive pipe is tiled in the heating groove of the heating layer, and the heat conductive rod is extruded by the heating pipe and under the same and is disposed between two heating layers. Woodiness floor or ceramic tile floor are paved on the upper heating layer as the equipment is used. The invention has simple structure, and can heat floor uniformly thereby increasing thermal efficient and saving energy.

The invention discloses a combined mounting bracket. The combined mounting bracket comprises a connecting part, a heat radiator mounting part and a loudspeaker mounting part, wherein the connecting part is connected with a frame of the motorcycle; the heat radiator mounting part is used for mounting a heat radiator; the loudspeaker mounting part is used for mounting a loudspeaker; the heat radiator mounting part is a mounting block; a heat radiator mounting hole for mounting the heat radiator is formed in the mounting block; the connecting part is at least one connecting support lug arranged on the mounting block; a frame mounting hole used for mounting the combined mounting bracket on the frame of the motorcycle is formed in the connecting support lug; one end of the connecting support lug is arranged on the front surface of the mounting block; the other end of the connecting support lug extends to a direction far away from the front surface of the mounting block; the loudspeaker mounting part is formed by bending one side end of the mounting block; and a loudspeaker mounting hole used for mounting the loudspeaker is formed in the mounting part. The combined mounting bracket disclosed by the invention can be used for simultaneously mounting both the heat radiator and the loudspeaker.

The invention discloses an asymmetric half-bridge flyback drive circuit, and the circuit comprises a complementary PWM generator, two drive transformers, and a series asymmetric flyback circuit. The separation of the drive transformers enables on/off switching tubes of the circuit to be respectively controlled, thereby improving the quality of a drive signal, and reducing the false triggering caused by the level changes. The dead zone time between the switching tubes is mainly controlled by a complementary signal because of the separated winding, thereby enabling the impact on the dead zone from the drive transformers to be the minimum. In a wide-range and high-input-voltage switching power application, the circuit, compared with the prior art, enables the reliability of a product to be improved.

The invention provides a casement window fixing hinge. The casement window fixing hinge comprises a slide rail, a fixed strip, a hinge cornerite, a slide block, first installation holes and second installation holes; the first installation holes are formed in the middle of the slide rail, the second installation holes are formed in the ends of the slide rail, and the first installation holes and the second installation holes are all used for external installation of the casement window fixing hinge; the slide block comprises a first end, a second end and a protruding end; the first end is fixed into the slide rail and slides in the slide rail; the second end and the first end are symmetrically arranged with respect to the central line of the slide rail, and the second end slides in the slide rail; and the protruding end is located between the first end and the second end, a groove is formed between the protruding end and the slide rail, and the effect that when the slide block slides on the slide rail, the protruding end does not make contact with the slide rail is ensured through the groove. According to the casement window fixing hinge provided by the invention, the load bearingcapacity of the slide rail is improved, the slide rail is not prone to being twisted and deformed due to stress, and the service life is long.