48results about How to "Increase the force area" patented technology

The invention provides a plug adapter type infusion hose joint seal ring. The upper part of the seal ring is provided with a groove; the lower part of the sectional shape of the seal ring is L-shaped, the upper part of the sectional shape of the seal ring is V-shaped, and the sectional shape of the seal ring is integrally y-shaped. According to the seal ring, the common problems such as less controllable matching gap of two seal rings, high laboriousness of mutual screw-in due to over-small matching gap, unreliable sealing and leakage caused by over-large gap and the like in the prior art are mainly solved. The basic shape of the section of the seal ring is designed to be y-shaped, so that the effective sealing area and the elastic deformation of the two seal rings are effectively increased, the pressing of two joints is more labor-saving, the sealing property is good, and the sealing is reliable.

The invention provides a buccal side multi-curved spring invisible orthodontic appliance which comprises an invisible orthodontic tooth socket and a buccal side multi-curved spring, the invisible orthodontic tooth socket comprises an upper jaw invisible tooth socket and a lower jaw invisible tooth socket, and the buccal side of the upper jaw invisible tooth socket and the buccal side of the lower jaw invisible tooth socket are both provided with a bag-shaped structure; a containing cavity is formed in the bag-shaped structure, the containing cavity penetrates through one side of the bag-shaped structure to form a bag opening, the bag opening of the bag-shaped structure on the upper jaw invisible tooth socket faces the back tooth area, and the bag opening of the bag-shaped structure on the lower jaw invisible tooth socket faces the front tooth area; the two free ends of the buccal side multi-curved-spring are connected with reinforcing blocks, and the reinforcing blocks at the two free ends of the buccal side multi-curved spring are detachably connected with the containing cavity of the upper jaw invisible tooth socket bag-shaped structure and the containing cavity of the lower jaw invisible tooth socket bag-shaped structure in an inserted mode through the bag openings respectively. The buccal side multi-curved spring and the invisible orthodontic tooth socket can be combined together to realize stress application for orthodontic treatment. The invention also provides the used invisible orthodontic tooth socket and the buccal side multi-curved spring matched with the invisible orthodontic tooth socket.

The invention relates to the field of drilling, and discloses a flange drilling device. The flange drilling device comprises a machine frame and a driving shaft. The driving shaft is coaxially and fixedly connected with a driving gear, and the driving gear is a sector-shaped gear. The driving shaft is rotatably connected with a supporting rod, and the other end of the supporting rod is fixedly connected to the machine frame. The driving gear meshes with a transmission gear. A lead screw is coaxially and fixedly connected to the transmission gear, and the other end of the lead screw is rotatably connected with a supporting gear. An alarming apparatus and a control switch which controls the alarming apparatus are arranged on the transmission gear and the supporting gear. A reset spring is arranged on the control switch. A supporting platform is connected to the lead screw in a threaded mode. A transfer plate is rotatably connected to the supporting platform. A positioning groove is formed in the transfer plate. Driving teeth are evenly distributed in the circumferential direction of the transfer plate. A rack is fixedly connected with the machine frame, and the rack meshes with the driving teeth. A cylinder is arranged above the supporting platform, a drilling plate is fixedly connected to the bottom of a piston rod of the cylinder, and a drill bit is arranged on the drilling plate. The flange drilling device solves the problem of hidden danger caused by the mobile drilling equipment.

The invention relates to a gear polishing device. The gear polishing device comprises a rack, support tables are arranged on the rack, clamping blocks are glidingly connected with the support tables,and support springs are arranged between the clamping blocks and the support tables; the gear polishing device also comprises a polishing shaft, polishing teeth are glidingly connected onto the polishing shaft, a cavity is formed in the polishing shaft, an air bag is arranged in the cavity, a downward press rod glidingly connected onto the rack is arranged above the air bag, connecting rods are hinged to two sides of the downward press rod respectively, and the other ends of the connecting rods are hinged to the clamping blocks; a collecting plate is arranged on the polishing shaft, a first magnet is arranged at the bottom of the collecting plate, a falling port is formed in the collecting plate, a baffle is rotationally connected at the falling port, a second magnet is arranged on the baffle, and magnet poles of opposite sides of the first magnet and the second magnet are opposite; a conveying belt and a conveying wheel are arranged below the collecting plate, a third magnet is arranged on the conveying belt, magnet poles of opposite sides of the third magnet and the second magnet are opposite, and the magnetic force of the third magnet is larger than that of the first magnet. Thedevice solves the problem of small application range of traditional polishing devices.

The invention discloses a reinforced support structure for construction engineering, comprising a reinforced support structure connecting frame and a reinforced support structure main body, the reinforced support structure main body includes a right reinforced support structure main body and a left reinforced support structure main body, the One end of the reinforcement support structure connecting frame is fixedly provided with the right reinforcement support structure main body, the other end of the reinforcement support structure connection frame is fixedly provided with the left reinforcement support structure main body, the left reinforcement support structure main body and the right reinforcement support structure main body Symmetrically arranged, the main body of the reinforced support structure is composed of a support plate, a hydraulic telescopic cylinder mounting frame, a hydraulic telescopic cylinder and a fixed splint. One end of the top surface of the support plate is vertically fixed with a hydraulic telescopic cylinder mounting frame, and the hydraulic telescopic cylinder There are two sets; the present invention is composed of a reinforced support structure connecting frame and a reinforced support structure main body, which is convenient for installation and disassembly.

The invention discloses a pile extracting clamp which is integrally of a T shape. The pile extracting clamp comprises a horizontally-arranged hollow transverse tube and a vertically-arranged hollow longitudinal tube; wherein the upper end and the lower end of the hollow longitudinal tube are opened; the upper end of the hollow longitudinal tube is communicated with the hollow transverse tube; a front side plate and a rear side plate of the hollow longitudinal tube are provided with a plurality of rows of preserved holes from top to bottom; a horizontal moving chuck is arranged in a left half section of the hollow transverse tube; and a horizontal fixed chuck is arranged in a right half section of the hollow transverse tube. According to the clamp, actions forces are applied onto an H-shaped steel flange plate and a web plate; the area of the action forces is large; the centralized stress is reduced; the damage to the pile is reduced; in addition, the clamp is very convenient to operate.

The invention provides an infusion device, which can be used for an infusion pump and comprises a transmission shaft, a liquor stopping block and at least one liquor pushing block, wherein the transmission shaft is connected with a driving device; the liquor stopping block comprises a first liquor stopping block and a second liquor stopping block and can be sleeved to the transmission shaft in a rotating way and periodically extrude an infusion tube along with the rotation of the transmission shaft so as to temporarily stop the flowing of liquor in the infusion tube; the at least one liquor pushing block is sleeved to the transmission shaft in the rotating way, periodically extrudes the infusion tube so as to push the liquor to flow in the infusion tube and is positioned between the first and second liquor stopping blocks; and the lateral end face of the liquor pushing block extruding the infusion tube is a flat end face.