4results about How to "Change arc" patented technology

The present application relates to steel formwork turning plate technical field, especially to a kind of steel formwork turning plate structure for power plant chimney and use method.It includes fixed seat, the fixed seat is provided with symmetric and evenly distributed through-hole, the fixed seat is fixed with first hydraulic rod, the fixed seat is slidably connected with mounting seat, the mounting seat is slidably connected with first steel plate, the first steel plate is provided with symmetric and evenly distributed through-hole, the mounting seat is fixed with second hydraulic rod, the first steel plate is rotatably connected with symmetric distribution second steel plate, the first steel plate is hinged with symmetric distribution first fixed shell, symmetric distribution the first fixed shell is slidably connected with first sliding rod on opposite side.The first sliding rod of the present application pushes adjacent second steel plate to produce rotation, so as to change the overall arc of the device, so that the device can adapt to the construction of various diameter chimneys, reduce the formwork cost when chimney is built.

The utility model relates to pipe fitting cutting technical field discloses a pipe fitting clamping mechanism for band saw cutting device, including first clamping mechanism and second clamping mechanism that set up in cutting table from left to right in proper order, first clamping mechanism includes the installation frame of left and right two ends opening, the installation frame has first clamping piece and second clamping piece from left to right in proper order, the first installation hole that the upper end of installation frame is opened has for the first cylinder stretches into, the piston rod of first cylinder passes through first installation hole and stretches into the inside of installation frame, second clamping mechanism includes support frame and fixed frame, support frame is fixed on fixed frame, the second installation hole that support frame is opened has for the piston rod of second cylinder stretches into, the piston rod of second cylinder passes through second installation hole and stretches into down and is fixedly connected with third upper circular arc clamping portion, the third lower circular arc clamping portion that fixed frame is located third upper circular arc clamping portion's just below is provided with.

This utility model discloses a knitting track adjustment device for a knitting machine, relating to the field of knitting machine technology. It includes a guide rail adjustment assembly, one end of which is equipped with a pressure roller assembly. Both the guide rail adjustment assembly and the pressure roller assembly are fixedly connected to the machine housing. The guide rail adjustment assembly includes a horizontal plate, with an arc-shaped guide rail on the side of the horizontal plate closest to the machine housing. A transverse sliding groove is provided in the middle of the horizontal plate, and an arc-shaped groove is provided on the arc-shaped guide rail. After loosening two nuts, the transverse sliding bolt and the positioning bolt can move along the transverse sliding groove, thereby changing the position of the arc-shaped guide rail and improving its applicability. Loosening the two nuts also allows the arc-shaped guide rail to rotate around the transverse sliding bolt as its center, changing the curvature of the arc-shaped guide rail, so that the material can also change the curvature after sewing under the guidance of the arc-shaped guide rail. When the arc-shaped guide rail rotates, the positioning bolt slides in the arc-shaped groove, preventing the positioning bolt from obstructing the arc-shaped guide rail and ensuring its normal rotation.

The utility model discloses an arc-shaped roof daylighting panel, and relates to the technical field of daylighting panels. Comprising a transverse telescopic plate; the number of the mounting plates is two, and the two mounting plates are arranged at the two ends of the transverse telescopic plate correspondingly; and the bottoms of the two sides of the arc-shaped plate are fixedly connected with the top of the mounting plate. Through the arrangement of the arc-shaped plate, the transverse telescopic plate and the mounting plates, the span and radian of the arc-shaped plate can be changed by adjusting the length of the transverse telescopic plate and changing the distance between the two mounting plates during use, the shape of the arc-shaped plate can be adjusted, and the arc-shaped plate can quickly adapt to an arc-shaped main body structure; and effective daylighting can be carried out on the interior of the arc-shaped roof.