31results about How to "Small space required for installation" patented technology

The invention discloses a fan-shaped courtyard gate, the structure of which comprises a door frame and a door panel; it is characterized in that the door frame is in the shape of a groove, the lower part is equipped with a transmission motor, and the upper part is provided with a door leaf fixing shaft with bearings; the door panel is a 9-piece door The leaves are formed in the shape of a fan; there is a bearing seat under each door leaf; a door leaf fixed shaft with bearings is arranged on the rear and upper part of the door leaf, and an arc-shaped sliding groove is arranged on the front and upper part of the door leaf; each door leaf passes through the The fixed shafts of the door leaves in between are buckled together with the arc-shaped sliding grooves to form a fan shape; and the transmission bearings on the transmission motor are respectively threaded through the sleeves and fastened to the bearing seats under each door leaf; when the door leaves are unfolded, they open like a fan , to form a door panel; when the door leaf is folded, the door leaf is folded in the door frame; the invention not only realizes a good anti-theft effect, but also removes the cumbersome operations of locking bolts and bolts, saving materials and reducing the cost of the door , and the structure is stable and compact, saving installation space.

The invention discloses a steel bar clamping mechanism on a steel bar truss forming machine. The steel bar clamping mechanism comprises a mounting base (1), wherein one lateral surface of the mounting base (1) is provided with a first driving arm (2), a first driven arm (3), a chuck fixed base (4), a second driven arm (5) and a second driving arm (6) sequentially from left to right; a first chuck(7) is formed between the upper end of the first driving arm (2) and the upper end of the first driven arm (3); a second chuck (8) is formed between the upper end of the first driven arm (3) and the upper end of the chuck fixed base (4); a third chuck (9) is formed between the upper end of the chuck fixed base (4) and the upper end of the second driven arm (5); a fourth chuck (10) is formed between the upper end of the second driven arm (5) and the upper end of the second driving arm (6); and the four chucks can clamp steel bars simultaneously under the driving of a driving device, namely the steel bar clamping mechanism can clamp the four steel bars simultaneously. The steel bar clamping mechanism belongs to the technical field of clamping mechanisms.

The invention relates to the technical field of pin shaft structure design, and particularly provides a bearing stop pin shaft for bearing and hinging between a first connecting piece and a second connecting piece. A hollow pin shaft body, a stop piece, a first check ring, a second check ring and a transmission piece are included. The hollow pin shaft body penetrates through the first connecting piece and the second connecting piece. A groove A is formed in one end face of the hollow pin shaft body, and a groove B is formed in the other end face of the hollow pin shaft body. The stop piece sleeves one side of the hollow pin shaft body and coaxially rotates with the hollow pin shaft body. An inner ring of the stop piece is provided with a protruding block A matched with the groove A. A stopboss is arranged on the first connecting piece and drives the stop piece and the first connecting piece to coaxially rotate. The first check ring is fixed to one side of the stop piece, the second check ring is fixed to the other side of the hollow pin shaft body, and the end face of the second check ring is provided with a protruding block B matched with the groove B. The transmission piece penetrates through the hollow pin shaft body, one end of the transmission piece is fixed to the first check ring and coaxially rotates with the first check ring, and the other end of the transmission piece is fixed to the second check ring and coaxially rotates with the second check ring.