37results about How to "Large bending stress" patented technology

The invention discloses a hydraulic folding dam with mechanical self-locking for a forked type rod. The dam comprises a dam base and a door page which is movably connected to the dam base. Two supporting devices are arranged between the dam base and the door page, each of the supporting devices comprises a lower connecting rod connected to the dam base and an upper connecting rod connected to the door page, and the upper connecting rod is movably connected to the lower connecting rod. The dam disclosed by the invention has the advantages that the dam is more compact in structure; compared with a supporting hydraulic cylinder which directly supports the door page, the stroke of the hydraulic cylinder is long; as a mechanical self-locking structure is arranged, two locking hydraulic cylinders are cancelled; all the connecting rods are two-force beams, so that the dam is more reliable in structure and the connecting rods are only subjected to a pressure or tension. Compared with the hydraulic dam in the drawing, the lower connecting rod is subjected to a great bending stress; the supporting devices are double connecting rod structures which are more firm, and in the moving process, inference with the supporting rods of the hydraulic cylinder is avoided; the hydraulic cylinder is directly supported at an upper and lower connecting rod motion pair, so that the supporting force is greatly lowered, the dimension of the hydraulic cylinder is reduced, and the reliability is improved.

A housing includes a first chassis and a second chassis which are each formed of a metal sheet. Support projections integrally formed with support pieces formed in the first chassis are fitted into support holes of a circuit board on both left and right sides of a connector. A lower surface of the circuit board is supported by receiving portions formed in the support pieces, and part of the circuit board facing the connector is pressed downward by a pressing projection formed in the second chassis.

A drive cone 11 and a diaphragm 14 are integrally driven by a voice coil 6 which is movably disposed in a magnetic gap 5. Peripheral edges of the drive cone 11 and diaphragm 14 are supported by a frame 12 through edge portions 13 and 15.

A lead wire 21 supplies a drive signal to the voice coil 6. The lead wire 21 is disposed along a surface shape of the edge portion 13 which supports the drive cone 11. The lead wire 21 is mounted along a roll shape of a flexible adhesive utilizing the adhesive.

With this structure, the lead wire 21 deforms such as to follow deformation of the edge portion 13 in the drive cone 11 in accordance with vibration of the diaphragm 14. Therefore, it is possible to prevent a bending stress caused by vibration from being transmitted to a portion of the lead wire.

An implement for removing honeysuckle bushes and the like wherein the implement is inserted below the soil surface and the root ball of the bush is leveraged up and out of the soil. The implement may be manually used to break the roots of the bush before ultimate removal.

The invention relates to an unfolding and machining method for single-bent thin-walled parts, which is applicable to thin-walled parts with a curvature radius of more than 1000 mm. The method is characterized by comprising the following steps of: 1) carrying out pre-roll bending on thin-walled parts, wherein the rolled radius of each thin-walled part is 1000 mm larger than the final curvature radius thereof; 2) carrying out unfolding and machining on the thin-walled parts, namely, unfolding the thin-walled parts on a vacuum platform of a numerical control device to be clamped, keeping the machined surfaces of the thin-walled parts horizontal, and machining the thin-walled parts through selecting a high-speed milling numerical control machining mode, wherein the machining path is a longitudinal serpentine milling path; and 3) discharging the parts from the vacuum platform, and placing the parts in a natural state, so that the final technical requirement can be satisfied. The method is not only simple, but also can save a lot of production cost on the premise of ensuring the quality and machining cycle of the parts.

The invention relates to a locking mechanism capable of resisting large impact and vibration. The locking mechanism is driven by a servo motor, through a worm and gear and threads are transferred to drive a fixed fluted disc to perform a linear movement until the fixed fluted disc and a movable fluted disc (are installed on the carrier) are completely meshed, so that the positioning and locking functions can be realized. The worm and gear is designed to be a worm and gear capable of self-locking, so that the locking mechanism can be reliably locked, the phenomenon that looseness occurs is avoided, a threaded connection mode is adopted for the worm gear and the fluted disc, and can be prevented from being loosened under a certain friction force; meanwhile, the high-precision positioning ofthe fixed fluted disc can be realized under the cooperation of guide dense beads; and the high-precision locking mechanism can achieve high-impact resistance and vibration resistance.

There are described a turning unit that turns the recording medium fed from a fixing unit, which fixes toner transferred to a recording medium and has a heating roller for heating toner, by approximately 90° with respect to a feeding direction of the recording medium, and a discharge roller that discharges the recording medium turned by the turning unit. A circumferential speed of the discharge roller is smaller than a circumferential speed of the heating roller.

The embodiment of the invention provides a supporting structure for supporting a flexible display screen and a flexible display device, and relates to the technical field of display. When the flexible display device is curled, uniform distribution of stress of the flexible display screen is guaranteed, meanwhile, a supporting layer is prevented from being broken, and the flatness of the flexible display screen is improved. The supporting structure comprises a flexible supporting layer, and the flexible supporting layer comprises a first supporting layer and a second supporting layer; the first supporting layer comprises a first surface and a second surface which are oppositely arranged, and the first surface is the surface, facing the flexible display screen, in the first supporting layer; the second supporting layer is located on one side of the second surface of the first supporting layer, the second supporting layer comprises a plurality of supporting parts arranged at intervals, the supporting parts comprise the first supporting parts and the second supporting parts, and the direction, pointing to the second supporting parts, of the first supporting parts is the curling direction of the flexible display screen; and the film thickness of the first supporting part is larger than that of the second supporting part in the direction perpendicular to the plane where the first supporting layer is located.

The invention provides a TBM shield anti-side-rolling walking support device and a using method thereof. The middle portion of a bottom plate is fixedly mounted with a rolling way, and slide rails aresymmetrically arranged on both outer sides of the rolling way. The outer sides of the two slide rails are respectively provided with symmetrically arranged tracks; the top of the rolling way, the slide rail and the track supports the front shield of a shield body, and the bottom two sides of the front shield are symmetrically and fixedly mounted with anti-side-rolling support roller boxes for preventing the shield body from rolling during the moving process. The bottom of the anti-side-rolling support roller boxes are in sliding engagement with the tracks; the front shield is connected to a traction power device for driving the front shield walking along the rolling way, the slide rail and the track. The TBM shield anti-side-rolling walking support device not only solves the constructionproblem of the shield body of the cylindrical TBM tunneling machine easily rolling to the both sides when slipping and walking in the gate tunnel, but also bears part of the front shield load and reduces the pressure of the front shield on the slide rail.

The invention discloses a manufacturing method of a steel wire with an alloy plated layer, the steel wire and a steel wire rope, and relates to the technical field of manufacturing and production of steel wires. The manufacturing method of the steel wire comprises the following steps that 1, a steel wire matrix is obtained; 2, the obtained steel wire matrix passes through a zinc pot with molten zinc liquid to obtain a steel wire matrix plated with a zinc layer, the steel wire matrix plated with the zinc layer is subjected to mechanical wiping treatment, and the steel wire matrix with an iron-zinc alloy layer on the surface or the steel wire matrix with the iron-zinc alloy layer and a pure zinc layer on the surface is obtained; 3, the obtained steel wire matrix with the iron-zinc alloy layer on the surface is pickled to remove the pure zinc layer on the surface of the steel wire matrix, and the steel wire matrix with the iron-zinc alloy layer on the surface is obtained; and 4, the obtained steel wire matrix with the iron-zinc alloy on the surface is drawn to obtain the steel wire with the required size. The steel wire produced by the method is beneficial to improving drawing and twisting speed and improving production efficiency.

This disclosure discloses an OLED display substrate and a manufacturing method thereof, as well as an OLED display apparatus. The OLED display substrate comprises a display area and a non-display area surrounding the display area. The OLED display substrate comprises a barrier which is provided in the non-display area and an encapsulation structure layer which covers the display area and extends to cover the barrier, and the OLED display substrate further comprises a metal halide layer which is located between the barrier and the encapsulation structure layer.

The invention relates to a piezoelectric transducer, a production method thereof, and electronic equipment. The piezoelectric transducer comprises a supporting structure and a piezoelectric vibratingdiaphragm arranged on the supporting structure; the piezoelectric vibrating diaphragm comprises a beam, one end of the beam in the first direction is supported by the supporting structure, and the other end of the beam is a free end; and the piezoelectric vibrating diaphragm comprises a first electrode layer and a piezoelectric material layer which are sequentially arranged on the supporting structure in a stacked mode, wherein the area of the piezoelectric material layer at the free end is smaller than that of the first electrode layer. Compared with a traditional piezoelectric transducer, the piezoelectric transducer, the piezoelectric transducer of the invention has the following advantages: when the piezoelectric vibrating diaphragm deforms, the bending stress is large; and particularly when the piezoelectric transducer is a piezoelectric electroacoustic transducer, the signal to noise ratio is high.

The invention provides an array antenna synchronous rotation platform, an array antenna and a use method of the array antenna synchronous rotation platform, and aims to solve the problem of synchronous rotation of an antenna array. The synchronous rotating platform comprises a plurality of circular rails with the same central axis, rail flat cars are evenly distributed on the circular rails in the circumferential direction, a supporting shaft is arranged on the central axis of each circular rail, a center platform is rotationally arranged on the supporting shaft, and the rail flat cars are connected with the center platform through truss arms. The center platform is driven by the rail flat car to rotate, overlarge bending stress of the truss arm caused by center driving is avoided, gear transmission is avoided, and gear contact fatigue accidents are avoided; and the directions of the antennas arranged on the rail flatcar are kept consistent, so that the working state of the antenna array is kept unchanged.

The invention aims at providing an engine room chassis. The engine room chassis comprises a main supporting structure and an auxiliary supporting part. The engine room chassis is used for supporting an engine room of a shore bridge. The main supporting structure comprises a transverse main beam, a longitudinal main beam and other function parts, the auxiliary supporting part is arranged on the outmost end of the transverse main beam, and comprises a first part, a second part and a third part, the first part is connected with the transverse main beam, the second part is connected with a horizontal connecting rod of the shore bridge, and the third part is used for connecting the first part with the second part. According to the technical scheme, an original cantilever beam is changed into astructure with weak supporting, too large deforming of the outmost end of the chassis and large bending moment of the main beam can be prevented, and safety of the engine room chassis during work canbe improved. The invention provides a mounting method of the engine room chassis. Parts are convenient to manufacture, production difficulty and production cost are greatly reduced, whole mounting isconvenient, and the size is flexible and adjustable.