3 results about "Traction frame" patented technology

The invention discloses a combined land preparation machine which comprises a main harrow frame, harrow sets, a compacting machine soil leveling device and walking wheels, the angles of harrow pieces on the harrow sets are adjustable, the harrow sets comprise the left harrow set and the right harrow set, the compacting machine soil leveling device comprises a left compacting machine soil leveling assembly and a right compacting machine soil leveling assembly, the left harrow set and the right harrow set are connected to the left side and the right side of the main harrow frame in a foldable mode, the left compacting machine soil leveling assembly and the right compacting machine soil leveling assembly are connected to the left side and the right side of the main harrow frame in a foldable mode, the compacting machine soil leveling device is located at the rear ends of the harrow sets, and a traction frame is arranged at the front end of the main harrow frame, so that harrow blades are more convenient to adjust.

The invention discloses a transplanting drilling machine for vegetables and medicinal materials. The transplanting drilling machine comprises a rack, multiple drilling wheels, a driving mechanism, a traction frame connected to a traction tractor and a central gearbox; each drilling wheel includes a wheel body, multiple drilling bits, a drilling bit bearing seats and connecting sleeves, the drilling bits are installed on the circumferential surface of the wheel body, and ones end of the connecting sleeves penetrate the corresponding drilling bit bearings to be connected with the drilling bits;the central gearbox includes a central sleeve, a housing, large bevel gear connecting sleeves, bevel gears, small bevel gears and small bevel gear bearing seats; the central gearbox sleeves a rotatingshaft; the housing is integrally connected with the central shaft, the large bevel gear connecting sleeves, the large bevel gears and the small bevel gears are installed in the housing, the large bevel gear connecting sleeves are in key connection with the corresponding central sleeve, and the large bevel gear connecting sleeves are connected with the corresponding small bevel gears through the large bevel gears; one ends of the connecting sleeves, away from the drilling bits, penetrate the small bevel gear bearings to be connected with the small bevel gears.

The invention provides an orthopedic surgery traction bed, which is characterized in that a vertical rod is connected with a surgical bed, the vertical rod is connected with a traction frame through afirst controllable air spring, the traction frame is connected with an extending arm through a second controllable air spring, the extending arm is connected with a penetrating block, a long nut anda guide plate are arranged in the penetrating block, and a screw is arranged in the long nut, while in use, traction can be implemented by rotating the screw, lifting is controlled through the first controllable air spring, abduction and adduction are controlled through the second controllable air spring, internal and external rotation of the lower limbs is controlled through the rotating guide plate, and therefore free regulation and control of resetting, lifting, abduction and adduction are completed, time and labor are saved, operation is convenient, intraoperative fluoroscopy is not affected, and the possibility of surgical incision pollution is reduced.