40results about How to "Guaranteed not to rotate" patented technology

The invention discloses a jacking system for fixing a scaffold. The jacking system for fixing the scaffold comprises a steel tube, vertical rods and supporting plates, wherein the steel tube and the vertical rods are vertically arranged, and the supporting plates are mounted at the tail ends of the vertical rods. The vertical rods are provided with threads, and one ends of the vertical rods are sleeved with the steel tube. The jacking system for fixing the scaffold further comprises adjustable mounting supports which are mounted at the upper end and / or the lower end of the steel tube. Each adjustable mounting support comprises a mounting cylinder, two pinch plates which are symmetrically arranged on the two sides of the mounting cylinder and are semicircular, and a set screw nut which is connected with the mounting cylinder and located in the pinch plates. The pinch plates are rotatably connected to the left sides and the right sides of the mounting cylinders, the tail ends of the pinch plates can be fixedly connected through bolts, and every two pinch plates are closed to be in a cylinder shape to be used for clamping the steel tube. The set screw nuts are matched with the steel tube, and center holes of the set screw nuts are connected with the vertical rods through the threads. According to the jacking system for fixing the scaffold, the stress of the steel tube and the stress of the vertical rods are located on the same central axis, the vertical rods, the steel tube and the supporting plates are connected to form a whole, and the jacking system can be widely applied to supporting different formworks.

The invention discloses an automatic assembling device and method for a small solid rocket. The assembling device comprises a clamping tool, a tightening shaft, a tightening tool, a base and a control device. The clamping tool comprises a fixed part and a movable part and can clamp the small solid rocket. The semi-cylindrical curved surfaces of the fixed part and the movable part are made of antiskid materials with the pasting and friction coefficient of [0.3,0.5]. The tightening shaft comprises a drive mechanism and an output shaft. The drive mechanism outputs the assigned torque to drive the output shaft to rotate. A hexagonal part of a spray pipe of the small solid rocket is tightened through the hexagonal tightening tool. In the assembling process, the opening part of the hexagonal tightening tool is clamped on the hexagonal part of the spray pipe of the small solid rocket, the tightening shaft runs downwards, the output shaft is inserted in the connector part of the tightening tool, and the drive mechanism outputs the assigned torque to drive the output shaft to rotate; and the assigned torque is exerted to the small solid rocket through the tightening tool so that the spray pipe and a shell can be tightened. By means of the assembling method, the number of tools is decreased, the labor intensity is lowered, and the assembling efficiency is improved.

The invention discloses a needle head and fixture suite. The needle head and fixture suite comprises a clamping connection plate and a clamping head; the clamping connection plate comprises a positioning slice connected with a needle head; the positioning slice is provided with sphere grooves; the clamping head comprises a clamping connection groove and elastic locking heads; each elastic locking head is arranged in the clamping head and comprises a sphere end, and the sphere ends extend into the clamping connection groove; the clamping connection groove is matched with the positioning slice; and the sphere ends are matched with the sphere grooves. By applying the fixture, when the clamping connection plate is clamped into the clamping connection groove, the positioning slice jacks the elastic locking heads to be compressed; when the sphere ends enter the sphere grooves, the needle head is fixed by the clamping head, and meanwhile the elastic locking heads abut against the sphere grooves; the gap between the positioning slice and one side of the clamping connection groove is eliminated, so that the positioning slice is tightly attached to the clamping connection groove and is in face contact with the clamping connection groove; and meanwhile, the positioning slice is fixedly connected with the needle head, namely, the freedom degree of the needle head is limited, and the effect that the needle head cannot rotate is ensured. The clamping head is simple in structure, using is convenient, the cost is low, and the effect is remarkable.

The invention discloses a cohesionless soil sampling apparatus. The apparatus comprises a cylindrical sampling cylinder, the sampling cylinder comprises a sampling top and a sampling bottom which are in threaded connection, the sampling bottom is provided with a fixed separation blade and a movable separation blade, the fixed separation blade is fixedly arranged on the inner wall of the sampling bottom, the movable separation blade is connected with the fixed separation blade through a center rotating shaft, the movable separation blade is positioned below the fixed separation blade, the center rotating shaft and the sampling cylinder are coaxially arranged, the top surface of the fixed separation blade is formed by two sector-shaped plates symmetrical to the center rotating shaft, the radian of each of the sector-shaped plates is 90DEG, the structure of the movable separation plate is same to the top surface of the fixed separation plate, and the top surface of the movable separation blade and the fixed separation blade are respectively vertical to the center rotating shaft. The bottom of the sampling cylinder can be conveniently closed without loss of a sampling amount, so the soil horizon sampling analysis working accuracy is improved.

The invention discloses a large-diameter end cover propulsion mechanism, assembly method, and press-fitting and tightening equipment, including a press-fit assembly, which provides a driving force to push the end cover into the press-fit end of the barrel, which includes a press-fit motor, a connecting screw and Screw block, one end of the connecting screw is connected to the power output shaft of the press-mounted motor, and the other end is connected to the screw block; the positioning component is used for the fixed connection between the end cover positioning seat and the cylinder, including the end plate and the end cover positioning seat. The end plate is located at one end of the cylinder, and a through hole for the end cover and the end cover positioning seat to pass is formed at the center of the end plate, and the end plate on the outer edge of the through hole is installed for realizing the end cover positioning seat and The positioning insert block is integrally connected with the cylinder; this device can realize the automatic grabbing of the end cap, automatically put it into the tooling, the tooling will automatically push and tighten, and at the same time, it can realize the automatic centering of the threaded parts. Realize automatic assembly, reduce labor and labor intensity, thereby improving work efficiency.

The invention discloses a pneumatic thin film performing mechanism with a built-in type anti-rotating device. The performing mechanism comprises a film cover component, a membrane, a tray, an elastic element and a push bar, wherein the membrane is fixed on the inner side of the film cover component, the tray is fixed on membrane, two ends of the elastic element are respectively connected with the film cover component and the tray, one end of the push bar is fixed on the tray, and the other end of the push bar penetrates through the film cover component and is exposed outside the film cover component. The pneumatic thin film performing mechanism is further provided with the built-in type anti-rotating device. The film cover component comprises an upper film cover, a connecting pipe and a lower film cover, wherein the upper film cover, the connecting pipe and the lower film cover are sequentially connected, and an anti-rotating guide component used for limiting a moving track of the built-in type anti-rotating device is arranged on the inner side of the connecting pipe. One end of the built-in type anti-rotating device is fixedly connected to the tray, and the other end of the built-in type anti-rotating device is connected with the anti-rotating guide component. The built-in type anti-rotating device can move along a track limited by the anti-rotating guide component. The built-in type anti-rotating device is arranged in the pneumatic thin film performing mechanism, not only is travel of the pneumatic thin film performing mechanism not affected, but also the push bar can be prevented from rotating.

The invention provides a sewing machine, and belongs to the technical field of sewing. The sewing machine solves the problem that the heating and clamping phenomena are likely to happen on a guiding component between a cutter holder and a machine head of an existing sewing machine. The sewing machine comprises a machine head and a cutter holder located on the lower side of the machine head. A presser bar guiding sleeve is fixedly arranged inside the machine head. A guiding base arranged on the guiding sleeve in a sleeving mode is arranged inside the machine head. A cutter bar is fixedly arranged on the cutter holder. The upper end of the cutter bar penetrates into the machine head and is fixedly connected with the guiding base. According to the sewing machine, it is ensured that the cutter bar does not rotate and a cutter fixed to the cutter holder is operated stably. Lubricating oil for lubricating a needle bar, a presser bar and other components is contained inside the machine head of the sewing machine, obviously, the lubricating oil can also lubricate and cool a gap between the guiding base and the presser bar guiding sleeve and a gap between the cutter bar and the machine head in an auxiliary mode, the sewing machine can be operated at high speed for a long time, and it is still ensured that the guiding base and the cutter bar are operated stably. The advantage that the structure of the sewing machine is simplified is achieved due to the fact that the guiding base achieves guiding through the presser bar guiding sleeve.