Abstract: The disclosure provides a finger module, a mechanical hand, and a robot. The finger module includes a finger base; a knuckle assembly rotatably connected with the finger base; a driving assembly including a driving member, a worm and a worm wheel, the driving member being arranged on the finger base, the worm being arranged within the finger base and connected with an output shaft of the driving member, and the worm wheel being meshed with the worm wheel; and a connecting rod member with one end being in transmission connection with the worm wheel and the other end being in transmission connection with the knuckle assembly. The driving member is configured to drive the worm to rotate, and drive the connecting rod member to rotate through the worm wheel so as to drive the knuckle assembly to rotate relative to the finger base.

Abstract: The disclosure provides a finger mechanism, a mechanical hand, and a robot. The finger mechanism includes: a finger base; a driving assembly provided on the finger base; a first phalange rotatably connected with the finger base; a second phalange rotatably connected with the first phalange; a connecting rod member with one end being in transmission connection with the driving assembly and the other end being in transmission connection with the second phalange, for driving the first phalange to rotate relative to the finger base and the second phalange to rotate relative to the first phalange under driving by the driving assembly; and an elastic resetting member provided in the accommodating cavity with one end being connected with the first phalange and the other end being connected with the connecting rod member, for driving the first phalange and the second phalange to reset.

Abstract: A finger, a robot hand, and a robot are provided. The finger includes a support, a telescopic finger portion rotatably connected to the support, a rotatable finger portion rotatably connected to the telescopic finger portion, and a first driver configured to drive the telescopic finger portion to extend and collapse, so that the telescopic finger portion rotates relative to the support and drives the rotatable finger portion to rotate relative to the telescopic finger portion. When the first driver drives the telescopic finger portion to extend and collapse, the rotational torque of the telescopic finger portion, the rotational torque of the rotatable finger portion, and the extension and collapse torque of the telescopic finger portion can be formed, thereby generating a more reliable grasping force and making it easier to grasp object.

Abstract: A finger, a robot hand, and a robot are provided. The finger includes an installation frame, a finger sleeve rotatably arranged at the installation frame, a finger portion rotatably arranged at the installation frame, located inside the finger sleeve, and capable of sliding inside the finger sleeve, and a driving assembly. The driving assembly is configured to drive the finger portion to slide relative to the finger sleeve, so that the finger sleeve and the finger portion rotate relative to the installation frame. The driving assembly can be installed at the finger portion or the finger sleeve, and does not need to be installed at the installation frame, so that the overall structure of the finger is more concentrated and does not occupy the space of other structures.

Abstract: Provided in the present invention is a method for preparing chiral alkyl compounds by the asymmetric hydrogenation reaction of iron complex catalysts catalysing olefins: using the disubstituted olefin shown in formula I as a raw material, atmospheric hydrogen as a hydrogen source, FeX2-8-OIQ complex as a catalyst, and a silane compound and acetonitrile as cocatalysts, and reacting for 12-24 hours under the action of a reducing agent to prepare the chiral alkyl compound shown in formula II. The method of the present invention has mild reaction conditions, simple operation, and high atom economy. In addition, the reaction does not require the addition of any other toxic transition metal (such as ruthenium, rhodium, and palladium), and has great practical application value in the synthesis of drugs and materials. The conversion rate of the reaction is also good, generally reaching >99%, and the enantioselectivity is also high, generally 70-99%.

Abstract: Provided in the present invention is a method for preparing chiral alkyl compounds by the asymmetric hydrogenation reaction of iron complex catalysts catalysing olefins: using the disubstituted olefin shown in formula I as a raw material, atmospheric hydrogen as a hydrogen source, FeX2-8-OIQ complex as a catalyst, and a silane compound and acetonitrile as cocatalysts, and reacting for 12-24 hours under the action of a reducing agent to prepare the chiral alkyl compound shown in formula II. The method of the present invention has mild reaction conditions, simple operation, and high atom economy. In addition, the reaction does not require the addition of any other toxic transition metal (such as ruthenium, rhodium, and palladium), and has great practical application value in the synthesis of drugs and materials. The conversion rate of the reaction is also good, generally reaching >99%, and the enantioselectivity is also high, generally 70-99%.