3results about How to "Adjustable support" patented technology

A screw rod shaft (12) is connected to a bearing seat (11) and a sleeve cylinder body (2) in a penetrating mode from back to front, a lever (4) is hinged to the middle of a body shell (1) on the lower side of the sleeve cylinder body (2), and a first supporting block (5) and a second supporting block (6) are installed at the front end of the sleeve cylinder body (2) and the front end of the lever (4) respectively. The included angle smaller than 90 degrees is formed by the supporting working faces of the first supporting block (5) and the second supporting block (6), openings face the cutting force direction, radial cutting force borne by the slender shaft workpiece in the machining process is counteracted, stress deformation of the slender shaft workpiece is eliminated, the workpiece is supported, concession of the workpiece under the action of the cutting force is prevented, machining rigidity, stability and machining efficiency can be improved, and the machining quality is improved. The grinding machining precision of the equidistant arc surface slender shaft workpiece is effectively improved, and it is ensured that the dial indicator jumps within 0.005 mm before and after clamping. The device can adapt to machining of slender shafts with the high precision requirement, can be used for machining technologies such as turning, turn milling and grinding of the slender shafts with the equidistant arc surfaces, and has good universality and popularization value.

The utility model discloses a tree protection frame for landscaping engineering, which belongs to the technical field of tree protection and comprises a first fixed semicircular sleeve, a second fixed semicircular sleeve is hinged to the outer surface of the first fixed semicircular sleeve, and a righting mechanism is arranged above the first fixed semicircular sleeve. Through cooperation of a square sliding rod, a third fixing semicircular sleeve, a U-shaped piece, a rotating rod, a winding belt, a first hook-and-loop fastener and a second hook-and-loop fastener, extra righting support can be provided for a tree, the position of the third fixing semicircular sleeve can be conveniently adjusted according to the height of the tree, meanwhile, the winding belt can freely rotate through the rotating rod and is conveniently wound on the tree, and the tree righting device is convenient to use. The first hook-and-loop fasteners and the second hook-and-loop fasteners are tightly adhered together, stable supporting force is provided for the trees, the trees are prevented from inclining or being damaged due to wind direction changes, the flexibility and practicability of the protection frame are improved, and growth of the trees is effectively protected.

The application relates to a concealed door hinge structure and belongs to the technical field of building decoration engineering, which comprises a concealed door connecting plate, a bottom plate, a supporting plate, a positioning plate and a stretching mechanism; one side of the concealed door connecting plate is used for fixed connection with a concealed door, and the stretching mechanism is located between the concealed door connecting plate and the bottom plate and is used for adjusting the distance between the bottom plate and the concealed door connecting plate; one end of the positioning plate is fixedly connected with one end of the supporting plate and both form an L shape, one end of the supporting plate away from the positioning plate is rotationally connected with one end of the bottom plate, and one end of the positioning plate away from the supporting plate is rotationally connected with a wall body at a mounting position of the concealed door; the distance from the rotationally connected position of the positioning plate and the wall body to the outer wall of the wall body is the length of the positioning plate, the application can realize the 180-degree opening angle of the concealed door, can ensure that the concealed door is hidden and can improve the aesthetic effect.