Please select the most similar patent number from A, B, C and D. Which number is?
Disclosed are a synchronous clamping-conveying mechanism and a labelling machine. The synchronous clamping-conveying mechanism comprises: a bracket (100); a driving device (200), wherein the driving device (200) comprises a driving member (210), a first transmission mechanism (220) connected to a driving shaft of the driving member (210), and a second transmission mechanism (230) connected to the first transmission mechanism (220) and running synchronously and disposed on the bracket (100); a first conveying member (300), the first conveying member (300) being sheathed on the second transmission mechanism (230); a synchronous transmission mechanism (400), wherein the synchronous transmission mechanism (400) is disposed on the bracket (100), and is connected to the first transmission mechanism (220) and running synchronously; and a top pressure mechanism (500), wherein the top pressure mechanism (500) is disposed on the bracket (100) and located above the first conveying member(300), the top pressure (500) mechanism comprises a second conveying member (510), and the second conveying member (510) and the first conveying member (300) run synchronously and cooperate with each other to form a clamping-conveying channel (600). The structure realises a high degree of synchronization consistency of the actions of the first conveying member (300) and the second conveying member (510), preventing a bottle falling due to the difference in running speed between the top and the bottom, and greatly improving the conveying stability and reliability of bottles.
A: A bidirectional power output linkage device and an antenna downtilt angle control device, the bidirectional power output linkage device comprising: an input shaft (110); a first transmission mechanism (200), the first transmission mechanism (200) comprising a first inner gear ring (210), a first gear (220) which is coaxial with the first inner gear ring (210), a second gear (230) which forms an acting connection with the first gear (220), and a first planet carrier (240); a second transmission mechanism (300), the second transmission mechanism (300) comprising a first rotating member (310) which is fixedly in transmission connection with the first planet carrier (240), and a second rotating member (320) which forms an acting connection with the first rotating member (310); a third transmission mechanism (400), the third transmission mechanism (400) comprising a second planet carrier (410) which is mounted on the second rotating member (320), a third gear (420) which is mounted on the input shaft (110), and a fourth gear (430) which meshes with the third gear (420); a one-way control mechanism, which controls the rotation direction of the first rotating member (310) to be opposite to the rotation direction of the second rotating member (320).
B: Disclosed is a bogie landing gear (100), comprising a bogie (110), wherein the bogie (110) is connected to a bearing strut (112), at least two axles (111) are arranged on the bogie (110), and an airplane wheel (120) is installed on each of the axles (111). The bogie landing gear (100) further comprises an automatic sliding device (130). The automatic sliding device (130) comprises: a driving mechanism which is fixedly installed on the bogie (110) and comprises a first output shaft and a second output shaft that can move synchronously, wherein the first output shaft and the second output shaft are connected to a first transmission mechanism and a second transmission mechanism respectively so as to transmit output rotation to a first airplane wheel and a second airplane wheel; and a clutch mechanism (160) for enabling the first transmission mechanism and the second transmission mechanism to move between a first position and a second position, so that the first transmission mechanism and the second transmission mechanism are connected to or disconnected from the first airplane wheel and the second airplane wheel. In the structure of the bogie landing gear (100) of the structure, the improved automatic sliding device (130) structure is adopted, such that an automatic sliding operation of the bogie landing gear (100) is achieved. Further disclosed is an aircraft comprising the bogie landing gear (100).
C: A reagent mixing and loading device (10) and an immunological detection apparatus. The reagent mixing and loading device (10) comprises a transmission mechanism (100), mixing mechanisms (200), a loading mechanism (300) and a driving mechanism (400), wherein the transmission mechanism (100) comprises a first rotating member (110) and a second rotating member (120), the first rotating member (110) being rotatably connected to a plurality of mixing mechanisms (200) arranged at intervals, and the first rotating member (110) being capable of synchronously rotating with the second rotating member (120); the driving mechanism (400) is used to drive the second rotating member (120) to rotate; each mixing mechanism (200) comprises a mixing column (210), a mixing transmission member (220) and a mixing limiting member (230), the mixing transmission member (220) being connected to the mixing column (210) in a sleeved manner and fitting with the second rotating member (120) in an abutting manner; and the loading mechanism (300) comprises a loading box (310) and a loading fitting member (320), the loading box (310) being provided with a reagent hole for the loading box (310) to be placed therein, and the loading fitting member (320) being rotatably arranged in the reagent hole and used for carrying the loading box (310). The reagent mixing and loading device (10) can implement the normal mixing of reagents without the occurrence of problems such as jamming and collision.
D: A labeling machine for a lower surface. The machine comprises: a controller; a first transport mechanism configured to feed a product to be labeled and electrically connected to the controller; and a positioning and gripping device (200) electrically connected to the controller and comprising a workpiece gripper mechanism (210) provided above the first transport mechanism. The workpiece gripper mechanism comprises a drive member (211), a holder base (212) drivably connected to the drive member, and at least three workpiece gripper correction fingers (213) provided at the holder base. The at least three workpiece gripper correction fingers can rotate with respect to the holder base, enclose and form a workpiece holding cavity (300), and approach or move away from each other. By means of rotatability of the workpiece gripper correction fingers with respect to the holder base, the present invention provides superior adaptability to hold, position, and perform attitude correction on a product having an irregular shape, thus adjusting an attitude of the product to be highly aligned with a labeling work position, and accordingly improving labeling precision and ensuring superior manufacturing quality of the product.
Answer: D