12results about How to "Small driving force" patented technology

A method for manufacturing high-strength, hydrogen-embrittlement-resistant bolts based on microsphere shot peening, and the bolts themselves, are disclosed. The manufacturing method includes: S1, cold heading and thread rolling of alloy structural steel billets to obtain bolt forming parts; S2, surface cleaning of the bolt forming parts, followed by overall surface peening with microspheres driven by high-pressure air; after overall peening, targeted strengthening peening treatment is performed on stress concentration areas such as thread roots, undercut grooves, and flange transition corners to obtain reinforced bolt parts; S3, the reinforced bolt parts are cleaned, dried, and phosphated to obtain finished bolt parts. This design, through a "overall + targeted" composite microsphere shot peening strategy, introduces a uniform residual compressive stress field and a micron-level fine-grained plastic deformation layer on the bolt surface, forming a thicker strengthening layer in stress concentration areas, significantly improving the fatigue strength and delayed fracture resistance of high-strength bolts, while ensuring uniform surface roughness and stable assembly friction coefficient.

This invention relates to the field of polishing machines, specifically disclosing a concrete polishing machine with protective functions. It includes a base with a hand handle, a mounting plate on the base, a polishing assembly on the base, a drive assembly connected to the polishing assembly on the base, a push assembly on the base, a brake assembly between the push assembly and the polishing assembly, and an inflation assembly on the mounting plate. This invention provides primary buffering, secondary buffering, braking, and support functions. When the hand is released, it effectively counteracts the polishing machine's continuous spinning and irregular movements, providing effective protection against abnormal movements from multiple angles. This ensures the polishing machine quickly stops working after an malfunction, reducing collision damage and preventing malfunctions, minimizing threats to surrounding workers, improving work efficiency, and accelerating construction progress.

The utility model discloses an exposure scanning shaft drive mechanism, exposure scanning shaft drive mechanism adopts the mode of linear motor module drive, eliminates mechanical transmission gap, improves the scanning speed of exposure scanning shaft, improves the positioning accuracy of vertical exposure equipment, satisfies the high accuracy requirement of exposure machine field. The counterweight of the present application is connected with the mounting base, and the counterweight offsets the weight of the lens module, which can reduce the driving force when the linear motor module is driven, so that the exposure scanning shaft drive mechanism is suitable for heavy load occasions. At the same time, the problem of the lens module falling due to its own weight after the linear motor module is powered off can be avoided, and the adaptability of the exposure scanning shaft drive mechanism is improved. In addition, the exposure scanning shaft drive mechanism of the present application has simple and reliable structure, low noise and low wear, which greatly reduces the maintenance cost in the later period.

The utility model discloses a kind of contact mechanism, load switch and electric meter, it is related to low-voltage electrical apparatus technical field.The contact mechanism includes shell and the moving contact, static contact and elastic member being set in shell, the one end of moving contact is connected with elastic member, the other end is used to be combined with static contact and be opened and closed, both ends of moving contact can be movable relative to static contact, elastic member is used to apply elastic force to moving contact in the opened and closed state to assist closing, elastic member is also used to apply elastic force to moving contact in the closed state to increase contact pressure.The contact mechanism can solve the problem that closing driving force is larger in prior art, energy consumption is higher, economic benefit is poorer, and contact pressure is smaller, reliability is poorer.

The application relates to the technical field of relays, in particular to a novel magnetic latching relay which comprises a shell, a contact mechanism fixedly installed in the shell, the contact mechanism comprising a first static foot and a second static foot, the first static foot and the second static foot being fixedly installed on one side in the shell, a first static contact being fixedly installed on the first static foot, a second static contact being fixedly installed on the second static foot, a rotating mechanism being rotatably connected to one side in the shell and located between the first static foot and the second static foot, two dynamic contacts being fixedly installed on the rotating mechanism and used for cooperating with the first static contact and the second static contact to realize circuit on-off, a pushing assembly being fixedly installed in the shell and used for driving the rotating mechanism to rotate, and an electromagnetic assembly being fixedly installed in the shell and used for driving the pushing assembly, through rotation of the rotating mechanism, the two dynamic contacts on the rotating mechanism are respectively attached to the first static contact and the second static contact, the single-contact stroke is shortened, and the working efficiency of the device is improved.

This utility model relates to a locking mechanism for a multi-point lock, a door lock, and a door lock suitable for wide cabinet doors. The locking mechanism includes a locking base, a steel bolt, a drive shaft component, and a shaft drive assembly. The drive shaft component is rotatably mounted on the locking base. The shaft drive assembly includes a driven member mounted on the input shaft of the drive shaft component and an active member located to the side of the drive shaft component and sliding linearly. The driven member is a rocker arm, which includes a mounting portion fixed to the input shaft. The mounting portion is connected to a rocker arm extension extending radially along the input shaft. The active member has a drive connection end connected to the rocker arm extension, which is movable relative to the rocker arm extension along the length of the rocker arm extension. It has the advantages of high transmission efficiency and labor-saving operation.

This invention provides a heat treatment process for the weld seam of a wind turbine tower frame, relating to the field of metal material heat treatment technology, including the following steps: S1: Pre-treatment of the fillet weld seam area of ​​the wind turbine tower frame; S2: Gradient heating treatment at the same heating rate: first heating the fillet weld seam area to 280±20°C for a first heat preservation, then continuing heating to 450°C±20°C for a second heat preservation, and finally continuing heating to 580°C±20°C for a third heat preservation; S3: After the heat preservation is completed, the workpiece is cooled. This invention can not only eliminate welding residual stress and prevent the initiation of delayed cracks and fatigue cracks, but also significantly improve the microstructure of the weld metal, increasing its low-temperature impact toughness by more than double, thereby greatly improving the operational reliability of wind turbine towers and solving the problem of tower frame cracking in winter.

The utility model relates to dish-washing machine drainage technical field discloses drainage assembly and dish-washing machine, and drainage assembly includes water cup and drainage pump, and water cup includes the water cup main part of having water passing cavity and sets up the drainage interface of water cup main part side part, and the bottom wall of water passing cavity is equipped with first drainage port, and the drainage interface has the drainage channel of communication with first drainage port in it, and the drainage pump includes drainage pump body, output shaft and cutting blade, and drainage pump body installs in the drainage interface, and output shaft sets up along the horizontal direction, and the end of output shaft away from drainage pump body extends to the meeting place of drainage channel and first drainage port, and cutting blade is fixed on the end of output shaft, and the utility model guarantees that food residue is fully pulverized by cutting blade before discharging, avoids its accumulation in the bottom of drainage channel, reduces the frequency that user washes filter screen, reduces the risk that user complains because of the poor drainage, thereby promotes the use experience of user.

This invention relates to the field of wire rope production technology, specifically to a double-parallel twist crane wire rope and its production process using a double-strand synchronous low-stress twisting method. The wire rope body has a 9-strand parallel twist structure, designated 3X40SF / 3X24F-3X7, comprising: an inner layer of 3 strands with a 3X7 structure twisted in an S-direction parallel twist; and an outer layer of 6 strands twisted in an S-direction parallel twist, with 3 strands having a 3X40SF structure and 3 strands having a 3X24F structure. The inner and outer layers are joined together using a Z-direction parallel twist. The wire rope body is prepared using a pre-tensioned tubular double-parallel twisting process. This invention, through a pre-tensioned tubular double-parallel twisting device, applies a constant and precise online pre-tension force simultaneously during the twisting process, forcing the wire to undergo lattice slip and dislocation reorganization during plastic deformation. This significantly eliminates residual stress generated during twisting and forging, solving the problems of low efficiency and uneven results associated with traditional offline pre-tensioning.

The invention relates to the technical field of chemical equipment, and discloses a quick assembly device and a quick assembly method of a modular ammonia still tray and an ammonia still system. The quick assembly device comprises a tower body, a maintenance channel, a treatment cover and a push-out mechanism. A tower tray capable of horizontally moving is arranged in the tower body, a maintenance channel with a detachable cover is arranged on the side wall of the tower body, the treatment cover is fixed on the outer wall of the tower body and is communicated with the maintenance channel, and a treatment cavity is formed in the treatment cover; the push-out mechanism is located on the side, opposite to the maintenance channel, of the tower tray in the tower and comprises a pushing block and a driving piece. And when the opening cover is opened, the driving piece drives the material pushing block to push the tray into the processing chamber through the maintenance channel. According to the device, the tray is laterally moved out, so that non-entering type rapid maintenance is realized, the production interruption time is reduced, the safety risk that personnel enter a limited space for operation is avoided, and the maintenance labor intensity is reduced.

A kind of micro air floating measuring head based on diamond vibrator drive belongs to high-precision measurement and electromechanical technical field;Two air floating short sleeves are fixedly connected on the base of the device, air floating guide rail is installed between the base and air floating short sleeve, measuring needle and metal target are respectively fixedly connected at the two ends of air floating guide rail;Diamond vibrator is installed in the middle of air floating guide rail, pre-tightening hinge is installed on the periphery of diamond vibrator, the matching relationship between pre-tightening hinge and both sides of diamond vibrator is interference fit, pre-tightening hinge is fixedly connected with motor cover shell through upper mounting hole, motor cover shell is installed between two air floating short sleeves and is fixedly connected on the base, and capacitor sensor is installed on the side facing metal target.The device has no Abbe error in principle, has active trigger and self-locking function, so it has the advantages of small trigger measurement force and high measurement precision.

The utility model belongs to the technical field of beam limiter, specifically relates to a beam limiter additional filter device, including filter assembly and motor, filter assembly includes the base plate, one end of base plate is equipped with the mounting hole, is equipped with the filter piece on the mounting hole, the other end of base plate is equipped with the shaft sleeve, the shaft sleeve is connected with motor, and motor is used for driving base plate to rotate with the shaft sleeve as the center, when using, make filter piece cover the ray export of beam limiter through motor drive filter assembly rotation, filter harmful rays, simple, fast, and the whole device structure is simple, small, can save the installation space, is favorable to the miniaturization design of beam limiter.