8results about How to "Safety flip" patented technology

This invention discloses a turning machine for producing subway tunnel segments, belonging to the field of tunnel segment turning technology. It includes a base frame, with adjustable rotating components connected to both sides of the upper surface of the base frame via short columns. A turning frame is mounted on each of the adjustable rotating components. The turning frame, driven by a hydraulic cylinder mounted within the base frame, rotates the tunnel segments placed on its surface from 0° to 180°. An adjustable support component is inserted into the turning frame. Through the set turning frame and adjustable support component, relay support is achieved between the two turning frames. Combined with the hydraulic cylinder drive, the turning of the tunnel segments from 0° to 180° can be stably completed without auxiliary hoisting, improving turning efficiency. The adjustable support component on the turning frame allows adjustment of the support rod protrusion height by rotating the threaded rod, reducing stress concentration, preventing tunnel segment damage, and adapting to the production needs of tunnel segments of different specifications.

The utility model relates to the technical field of steel structure machining, in particular to a rotating support for an H-shaped steel workpiece, which comprises a base, a rotating support, a rotating wheel, a connecting plate, a rotating support, a rotating rod, a stiffening plate, a handle, a brake rod and a brake spring. The bottom plate and the two vertical backup plates are combined to form a rotating support of a U-shaped structure, the rotating wheel is installed on the rotating support, the brake rods are located on the two sides outside the vertical backup plates respectively, the brake springs are located on the outer walls, close to the sides of the vertical backup plates, of the tops of the brake rods, the brake springs are conical springs, and the wide ends of the brake springs are fixed to the brake rods. The narrow end of the brake spring makes contact with the rotating rod but is not fixed. By arranging the U-shaped overturning frame, rapid overturning of the workpiece can be achieved, stability and safety of the workpiece in the overturning process can be guaranteed, and damage to a travelling crane caused by sudden falling of the workpiece due to loss of the gravity center is also avoided.

The present invention discloses a mobile egg trolley incubator with higher reliability, which comprises an incubator, an incubation adjustment system, at least one egg rack and at least one mobile egg trolley, wherein the egg rack is suspended and mounted on the mobile egg trolley by rotating a main shaft, the egg rack is driven to flip by a power source, a parking space for parking the mobile egg trolley is correspondingly arranged in the incubator, a first travel switch and a second travel switch are respectively arranged on the inner wall at the rear of the incubator corresponding to each parking space, a first trigger structure and a second trigger structure for correspondingly triggering the first travel switch and the second travel switch are arranged on the egg rack, a contact of the first travel switch is located on the circular motion track of the first trigger structure, a contact of the second travel switch is located on the circular motion track of the second trigger structure, and the first travel switch and the second travel switch are respectively electrically connected to the incubation adjustment system. The flipping of the egg rack of the present invention is more reliable.

The lifting and overturning auxiliary tool for the diesel engine cylinder cover comprises a support connected with lifting equipment during lifting, rotating supporting devices rotationally connected with the corresponding sides of the cylinder cover are coaxially arranged at the lower ends of stand columns on the two sides of the support, the cylinder cover is overturned under rotating supporting of the rotating supporting devices, and a positioning supporting device is arranged on one stand column of the support. And the positioning and supporting device is adaptively connected with the cylinder cover which is overturned in place so as to position the cylinder cover. The lower ends of the stand columns on the two sides of the support are coaxially provided with the rotary supporting devices connected with the corresponding sides of the cylinder cover in an inserted mode, rotary supporting conditions are provided for overturning of the cylinder cover, the cylinder cover overturned in place is limited through the positioning supporting device arranged on one stand column of the support, and a safe and reliable limiting structure is provided for lifting of the cylinder cover. The problem that the cylinder cover is difficult to hoist and overturn is solved, the cylinder cover is protected from being collided and harming the safety of workers, the working efficiency is improved, the operation space is saved, the application range is wide, and the cylinder cover overturning device can be popularized and used for other machine types.

The utility model discloses a mechanism related to a hydraulic system speed control loop, which comprises a support frame, a circuit board is fixedly mounted on the inner side of the support frame, a notch for an energy line of the circuit board to be inserted is formed in one side of the support frame, and a rotating motor is electrically connected above the middle of the circuit board; a mounting plate is fixedly mounted at the end of an output shaft of the rotating motor, the output shaft of the rotating motor penetrates through the supporting frame, and an oil cylinder is fixedly mounted above the mounting plate through bolts. An electric control hydraulic lock and a mechanical hydraulic travel switch are arranged above the circuit board, and both the electric control hydraulic lock and the mechanical hydraulic travel switch are located on the inner side of the supporting frame; an electromagnetic reversing valve is installed on the front side of the upper portion of the oil cylinder, and a two-way throttling valve is installed on the right side of the upper portion of the oil cylinder. According to the mechanism related to the speed control loop of the hydraulic system, the mechanical hydraulic travel switch and the electric control hydraulic lock are matched for use, so that the oil cylinder is safely and reliably overturned.

The utility model provides a crystal oscillator assembly ceramic wafer turnover device which comprises a fixing device, a driving mechanism arranged on the fixing device, a rotating mechanism with one end connected with the driving mechanism, a suction cup mounting plate arranged at the other end of the rotating mechanism and a plurality of vacuum suction cups arranged on the suction cup mounting plate in an array mode. The plurality of vacuum chucks are used for being separably sucked with the ceramic wafer, the driving mechanism is a stepping motor, an output shaft of the stepping motor is connected with the rotating mechanism, and the output shaft of the stepping motor is connected with the rotating mechanism through a connecting shaft. According to the overturning device for the ceramic wafer of the crystal oscillator assembly, the driving mechanism drives the rotating arm to move, so that the vacuum chucks on the chuck mounting plate suck and overturn the ceramic wafer, compared with manual overturning, the suction effect of the vacuum chucks on the ceramic wafer is better, the overturning efficiency of the ceramic wafer is higher, and the overturning efficiency of the ceramic wafer is improved. Therefore, the detection efficiency of the ceramic wafer is improved.

The invention discloses an armrest device for a bed-chair all-in-one machine, a control system and a control method.The armrest device comprises an armrest overturning frame and an armrest fixing frame, the armrest fixing frame and the armrest overturning frame are rotationally connected through an overturning mechanism, and an arc-shaped armrest frame is installed at the top of the armrest overturning frame; the turnover mechanism comprises a turnover motor, a first speed reducer, a first coupler and a rotating shaft, an output shaft of the turnover motor is connected with the rotating shaft through the first speed reducer and the first coupler, the rotating shaft is sleeved with a rotating block, a fixing block is installed in the handrail fixing frame, and the handrail turnover frame is installed on the rotating block. And a locking mechanism is arranged between the armrest overturning frame and the fixing block. The turnover motor of the turnover mechanism finishes turnover of the handrail turnover frame in a limited space under the action of the handrail controller; through the control system and the control method, detection of the turnover state of the handrail and control over the variable speed of the motor are achieved, and therefore safe and accurate turnover of the handrail is achieved.