16results about How to "Limit swing" patented technology

This invention discloses a PCB board soldering machine, belonging to the technical field of soldering machines. It includes a frame, a Y-axis moving assembly, an X-axis moving assembly, and a soldering mechanism. The Y-axis moving assembly is mounted on the frame and drives a vacuum suction plate holding the PCB board. The X-axis moving assembly is located on top of the frame and drives a moving frame thereon. The soldering mechanism is mounted on the frame and used to solder components on the PCB board. The independent X and Y-axis moving assemblies of this invention precisely drive the longitudinal movement of the PCB along the Y-axis and drive the lateral movement of the soldering mechanism along the X-axis, achieving high-precision planar positioning of the solder joints. A cylinder drives the mounting frame to make small-amplitude adjustments to the solder gun, ensuring precise alignment of the nozzle with the solder joint and improving the quality of precision solder joints. The solder feeding assembly features a double-wheel pressure clamping structure, with a tension spring providing constant pressure to adhere to the solder wire, preventing slippage and jamming. A rod, in conjunction with a limiting groove, constrains the swing amplitude of the oscillating plate, ensuring stable pressure and speed, precise solder feeding, and reducing defects such as insufficient solder accumulation and leakage, making it suitable for long-term continuous automated soldering.

The utility model discloses a kind of endoscope surgery pasting film, it is related to medical supplies technical field, including first film, second film, water baffle and liquid collecting and guiding bag.The bottom surface of first film is used to paste on skin.Second film is located on the top surface of first film, and the accommodating cavity that is formed with upward protrusion between second film and first film.Water baffle is located in accommodating cavity, and the region formed by surrounding water baffle is used to accommodate liquid.Liquid collecting and guiding bag is connected with one side of second film, and the bag opening of liquid collecting and guiding bag is towards the opening of water baffle, so that the liquid in the region formed by surrounding water baffle can flow into liquid collecting and guiding bag.In the process of operation by doctor, water baffle can be resisted by second film with physiological saline and patient's blood and other liquids, that is, water baffle plays a blocking role to liquid, so that liquid in the process of operation all stays in the region formed by surrounding water baffle, avoid the pollution of the surrounding environment of operation area.

This utility model discloses a netball and badminton large coil string shearing machine, including a workbench. Four legs are fixedly installed at the bottom of the workbench, and two large coil string supports are fixedly installed at the top of the workbench. Netball and badminton large coil strings are movably installed between the two supports via positioning pins. Two support rods are fixedly installed at the top of the workbench, and an anti-skip string device is movably installed at the top of each support rod. A meter counter and a meter display are fixedly installed at the top of the workbench, and a fixed plate is fixedly installed at the top of the workbench. A support frame is fixedly installed on one side of the fixed plate, and a rotator is fixedly connected to one side of the support frame. One end of the rotator's movable shaft passes through the support frame and is fixedly connected to a take-up reel. This netball and badminton large coil string shearing machine solves the problem of stringers often relying on rulers during the stringing process, which easily leads to string tangling, greatly improving the stringer's work efficiency.

This application provides an infrared sensor and its fabrication method, relating to the field of microelectromechanical systems (MEMS) technology. The fabrication method of the infrared sensor includes the following steps: S1, forming a support on a substrate; S2, forming a microbridge on the substrate; wherein the microbridge includes a first anchoring region and a cantilever beam interconnected, the first anchoring region being disposed on the substrate, and the cantilever beam suspended above the support; S3, forming a thermosensitive layer on the microbridge; wherein the thermosensitive layer includes a second anchoring region and a heat source sensing region interconnected, the second anchoring region being disposed on the cantilever beam and located above the support; the thermosensitive layer, the microbridge, and the substrate are sequentially electrically connected. This application solves the problem of easy failure of the thermosensitive layer and microbridge connection structure in existing infrared sensors under high-impact environments, improving the mechanical stability and reliability of the infrared sensor.

The utility model relates to the technical field of range extending type automobile, especially increase a kind of active air intake grille structure for range extender, including grille frame, the upper or front area of car rear wheel package is provided with grille mounting hole;Grille frame one end is embedded and fixed in the inboard of grille mounting hole, forms air inlet end, the other end is equipped with air outlet end, for connecting the air intake system of range extender;Drive assembly is located on grille frame, for driving flap to carry out overturning movement, to open or close air inlet end. By arranging air inlet end in the upper or front area of car rear wheel package, and setting flap controlled by drive assembly, active opening and closure to air inlet end are realized. When vehicle is in pure electric driving mode, range extender does not need to work, flap closes air inlet end under the action of drive assembly, effectively reduces vehicle front end airflow interference, reduces air resistance, improves pure electric cruising range;When range extender starts, flap is automatically opened, guarantees engine air intake demand.

The utility model discloses a premature water bag mattress with a head orthopedic function, which comprises a flat mattress body capable of being filled with water, the mattress body is flat, in order to avoid large fluctuation height change, drawstrings made of consistent materials can be arranged in the mattress body at equal intervals and are uniformly distributed, and the mattress body is connected with a heating mechanism for heating water. The heating mechanism can adopt existing intelligent heating and can control the temperature, a groove corresponding to the head is formed in the cushion body, the head can be conveniently placed, sliding and attention are not prone to occurring, the groove is not too deep, a water bag mechanism capable of supporting the head is detachably connected to the circumferential direction of the groove, and the water bag mechanism can be detached so that the position can be conveniently adjusted, and the premature infant can be better attached. The water bag mechanism can deform to support the head and keep the head warm, and the water bag mechanism not only can plastically position the head, but also can heat and keep the head warm.

The invention discloses an auxiliary device for lifting equipment on a distribution network overhead line column, and belongs to the technical field of lifting equipment. Comprising an insulating cross arm, an electric remote control elevator, an insulating rope, a ratchet belt, a steel chain unit and a tension ejector rod unit, the insulating cross arm comprises a lower clamping seat and an upper clamping seat, supporting rods are installed in the middles of the lower clamping seat and the upper clamping seat, an inclined strut is hinged to the middle of one end of the lower clamping seat, and an open clamping groove is formed in the other end of the inclined strut; two cross rods are fixed on two sides of one end of the upper clamping seat; the other ends of the two cross rods penetrate through the wheel shaft; the wheel shaft movably penetrates through the open clamping groove, and an I-shaped guide wheel is movably arranged in the open clamping groove. The guide wheel and the wheel shaft are rotationally mounted; limiting nuts are screwed at the two ends of the wheel shaft; arc-shaped attaching grooves are formed in the sides, away from the inclined struts, of the lower clamping base and the upper clamping base; the auxiliary device for lifting the equipment on the distribution network overhead line column can assist in lifting the equipment on the column to a mounting point of a column body, and an insulating cross arm is simple and convenient to mount.

A gantry crane lifting appliance capable of reducing the swing amplitude comprises an upper supporting beam, a movable pulley block is arranged in the middle of the top end of the upper supporting beam, an anti-swing mechanism is arranged on the upper supporting beam and comprises a first sleeve, the lower end of the first sleeve is slidably sleeved with a second sleeve, and the lower end of the second sleeve is slidably sleeved with a third sleeve. The bottom end of the third sleeve is hinged to the top end of the end of the upper supporting beam through a hinge base, a first compression spring is arranged at the upper end of the interior of the first sleeve, and a second compression spring is arranged at the upper end of the interior of the second sleeve. A lower supporting beam is horizontally arranged below the upper supporting beam, lifting hooks are arranged at the two ends of the lower supporting beam, a swing mechanism is arranged between the lower supporting beam and the upper supporting beam, and the lower supporting beam is assembled on the upper supporting beam through the swing mechanism. The device is simple in structure and convenient to use.

The utility model relates to the technical field of electric dining chairs, in particular to an electric dining chair with a limiting mechanism, the limiting mechanism is arranged between a second support mechanism and a first support mechanism, a locking position is arranged on one side, close to the first support mechanism, of a seat assembly, and when the seat assembly needs to be static, the seat assembly is swung to the locking position; under the action of the limiting mechanism, swinging of the seat assembly can be limited, the situation that a child loses balance due to accidental shaking of the seat assembly is avoided, an additional stabilizing mechanism is provided for the seat assembly through the limiting mechanism, and the stability of the seat assembly in the static state is improved advantageously; the problems that the stability of an existing electric dining chair is kept through a self-locking function of a motor, however, due to the fact that a motor locking mechanism generally only provides limited static retention force, when a child moves or the seat is subjected to external force, the seat still possibly swings accidentally, the child loses balance and even falls off, and the safety of the child is affected are effectively solved. And the use safety of children cannot be guaranteed.

The 220KV double-loop crossing tower comprises a tower head, a tower body and tower legs which are connected in sequence, the tower head comprises an upper cross arm and a lower cross arm, and the upper cross arm is located on the side, away from the tower legs, of the lower cross arm; the upper cross arm comprises two first sub-cross arms which are arranged oppositely; the lower cross arm comprises two second sub-cross arms which are arranged oppositely; wherein the first sub cross arm comprises a first upper jumper string hanging point, a first upper tension string hanging point, a second upper jumper string hanging point, a second upper tension string hanging point and a third upper jumper string hanging point which are arranged in sequence; on each first sub cross arm, a first jumper string and a second jumper string are respectively connected with a first upper jumper string hanging point and a second upper jumper string hanging point, and the first jumper string and the second jumper string are arranged in a V shape; and on each first sub cross arm, the third jumper string and the fourth jumper string are respectively connected with the second upper jumper string hanging point and the third upper jumper string hanging point, and the third jumper string and the fourth jumper string are arranged in a V shape. The height of the tower head can be reduced.

This utility model discloses a stator housing structure, a stator assembly, a motor, and a household appliance, relating to the field of household appliance technology. The stator housing structure includes a stator housing and a wire clamp. The stator housing has a receiving cavity with at least one open end. The edge of the opening has a wire outlet notch for the wire to exit from the receiving cavity. The bottom wall of the wire outlet notch has a first groove. The wire clamp has a second groove that matches the first groove. The wire clamp is inserted into the wire outlet notch along the axial direction of the stator housing. The first groove and the second groove together form a wire outlet for the wire to pass through. The wire outlet is press-fitted tightly with the wire. The technical solution provided by this utility model can improve the reliability of the motor under high humidity, pollution, and complex operating conditions.

This utility model provides a positioning device for a metallurgical drilling machine and a drilling system for an electric arc furnace. The positioning device for the metallurgical drilling machine includes: a fixed base for mounting on the outer wall of the electric arc furnace, comprising a base body and a first fixing block mounted on the base body, wherein a positioning groove is formed on the outer surface of the fixing block; and a support frame for mounting on the drilling machine, comprising a frame body and a second fixing block mounted on the side of the frame body facing the fixed base, wherein the second fixing block is provided with a positioning protrusion that matches the positioning groove. This utility model can effectively cope with vibration and oscillation during operation and reduce drill rod offset.

This utility model provides a fire extinguishing bomb for drones, including a shell. The outer walls at both ends of the shell have a first hook and a second hook for connecting to a drone release mechanism, solving the problem of easy swaying and reduced deployment accuracy caused by single-hook attachment. Symmetrically arranged on the radial outer walls of the shell are a first and a second hand catch, each with a through-hole and vertically positioned groove for insertion into a drone's positioning plate, further limiting sway. The first and second hooks have mounting holes extending axially along the shell. A control device mounting platform is located at one end of the shell, and multiple tail fins are spaced circumferentially on the sidewalls to facilitate stable flight after deployment. The control device mounting platform has a safety pin insertion / removal hole containing a safety pin assembly consisting of the first and second safety pins and a lanyard. The lanyard secures the drone, avoiding issues with manual securing and ensuring reliable triggering of the safety pin, thus improving the efficiency and success rate of fire extinguishing operations.

This utility model provides a lightweight internal magnetic flywheel, including a flywheel body, a magnetic control component, and a rotating shaft. The flywheel body is formed by stamping steel plate and includes a disc, an outer ring, and a threaded tube. The magnetic control component is installed in the mounting cavity of the flywheel body and is coaxial with the flywheel body and rotates relative to it. The rotating shaft passes through the flywheel body and the magnetic control component in sequence, and the rotating shaft and the flywheel body are rotatably mounted relative to each other via bearings, while the rotating shaft and the magnetic control component are fixedly mounted relative to each other. The flywheel provided by this utility model has a flywheel body made of a stretched component and stamped from steel plate, which integrates the advantages of uniform texture of steel plate material, thus forming a flywheel body with uniform material. When rotating, compared with cast iron, it has the advantages of stable rotation, small wobbling amplitude, and low noise, which can improve the quality of sports products and bring consumers a better user experience. In addition, since it is made of steel plate by stamping, the flywheel can be made thinner, thereby reducing the weight of the flywheel and the fitness products using it, which is beneficial for transportation and handling.

The utility model provides a telescopic moving structure for a goods shelf, and relates to the technical field of goods shelves. The telescopic moving structure for the goods shelf is installed on a goods shelf bottom support in pairs and comprises a connecting rod, a plurality of driving assemblies and a plurality of moving assemblies. The moving assembly is installed on the connecting rod, and the driving assembly is hinged between the connecting rod and a bottom support of the goods shelf and used for driving the connecting rod and the moving assembly to ascend and descend so that the goods shelf can move rapidly. The telescopic moving structure for the goods shelf is simple in structure and convenient to operate, lifting control of the trundles is achieved through linkage matching of the telescopic assemblies, the connecting rods and the moving assemblies, the goods shelf can be stably supported in use, and the trundles can be rapidly dropped to move and flexibly switched between the positioning state and the moving state when the goods shelf needs to move.