4 results about "Kinematic pair" patented technology

The invention relates to the technical field of micro-nano operation and precision location, in particular to a three-stage displacement amplification flexible precision locating platform with two degrees of freedom. The flexible precision locating platform comprises a base, a movable platform and two three-stage amplification structures which are of the same structure; a piezoelectric ceramic isfixed to the base by a pre-tightening bolt, and a hemisphere of the output end of the piezoelectric ceramic is connected with an arc box on a movable block; the both sides of the movable block are connected with first fixing bases through first parallel blade flexible leaf springs; and each three-stage amplification structure comprises conventional levers, L-type levers and a half-bridge structure. A wire-cutting technology and integral manufacturing are adopted by the whole locating platform, and assembly errors caused by a traditional mechanical device are overcome; the fiction problem of atraditional kinematic pair is solved by adopting a flexible hinge as a transmission pair; by adopting the three-stage displacement amplification structures, the translational output range of the piezoelectric ceramic in the X and Y directions is improved effectively, and the displacement amplification ratio of the three-stage displacement amplification locating platform is far larger than the displacement amplification ratio of a two-stage displacement amplification locating platform.

The invention discloses a press machine kinematic pair temperature monitoring device in the field of press machines. The press machine kinematic pair temperature monitoring device comprises a machinebody. The machine body is provided with a sliding block capable of sliding up and down. Four guide assemblies are vertically arranged on the machine body corresponding to the four corners of the sliding block. Each guide assembly is provided with at least one temperature sensor I. A front bearing block of each crankshaft is provided with a temperature sensor II, and a rear bearing block of each crankshaft is provided with a temperature sensor III. A connecting rod of each crankshaft is provided with temperature sensors IV. A big gear at the rear end of each crankshaft is engaged with a small gear on a gear shaft. A flywheel on each gear shaft is provided with at least two temperature sensors V. The press machine kinematic pair temperature monitoring device can detect the temperature of a kinematic pair of a press machine and give a high-temperature early warning on the kinematic pair with the excess temperature.

The invention provides an apple picking, classifying and collecting integrated machine. The apple picking, classifying and collecting integrated machine comprises a mechanical gripper, a connecting rod, a spherical kinematic pair, a telescopic rod and a box body; the mechanical gripper is pivoted to the top of the connecting rod, the bottom of the connecting rod is connected with the top end of the telescopic rod through the spherical kinematic pair, and the bottom of the telescopic rod is connected with the box body; the top face of the box body inclines in the direction away from the telescopic rod and is gradually lowered in height; the box body is divided into three classification spaces in the direction away from the telescopic rod; and a first classification hole, a second classification hole and a third classification hole of which the apertures are sequentially increased are formed in the top surface in the direction far away from the telescopic rod along a straight line, and the first classification hole, the second classification hole and the third classification hole respectively correspond to one classification space. According to the apple picking, classifying and collecting integrated machine, damage to apples during picking and collecting can be prevented, and apple classification can be achieved; and the machine can be used for picking apples in high trees and also can be used for picking apples in short trees.

The invention provides a contact strip. Every two contact strips form a static contact; a contact ring can be inserted between the two contact strips to connect a circuit; and the length of the two contact strips is different. Because the length of each contact strip of the invention is different, the contact strips form an asymmetrical contact strip structure. Kinematic pair abrasion between the contact ring and the contact strips can be effectively reduced through gradual rotation automatically generated after every motion of the contact ring. The contact strip provided by the invention can prolong the service life of the contact ring and the contact strip, improves the reliability under long-term using conditions, makes the reduction of material control cost possible because the selectable range of the materials of the contact ring and the contact strip is wide, and reduces maintenance workload of a user in application of products.