A transmission screw rod of carbon fiber composite material

[0013] Attached figure 1 with figure 2 Shown is the axonometric view of the drive screw structure of the carbon fiber composite material of the present invention. In the figure, it can be seen that the screw is composed of a screw main body [1], a joint 1 [2], a joint 2 [3], a pin [4], and a rubber Adhesive [5], the main body of the screw rod is made of full carbon fiber material M55J, and the composite material is reinforced on this basis. The molding adopts mature techniques such as molding and winding to complete the molding of the screw rod. The total length of the carbon fiber screw rod is not less than 904mm. The transmission part adopts trapezoidal thread, and the two ends of the screw rod adopt the method of double-threaded. The nominal diameter of the thread is not less than 26mm, the pitch is 8mm, and the lead is not more than 16mm. The main body 1 of the screw rod is not threaded and the wall thickness is not less than 2mm. The joint is connected to the main body of the carbon fiber screw 1; the adhesive 5 is selected from J133 structural glue for the connection between the joint and the main body of the carbon fiber screw [1].

[0014] The joint 1[2] and joint 2[3] of the screw rod are connected with the main body of the carbon fiber screw rod [1] by means of glueing and pinning [4]. Under normal conditions of use, the bonding strength can meet the requirements of use; After a small probability event such as degumming occurs, the screw can still transmit torque normally under the action of the pin; thus, it has high reliability and safety in terms of functional satisfaction;

[0015] At the same time, it is supplemented by mechanical processing to process the surface of the screw, especially to remove the burrs and residual glue on the surface of the transmission thread, thereby improving the quality of the spacecraft working surface and ensuring the smooth transmission process;

[0016] The total length of the carbon fiber screw rod is 904mm, the length of the screw main body [1] is 847mm, and the thread length of the main screw body [1] is 730mm. The transmission part of the main screw body [1] adopts trapezoidal thread and double-end thread, and the nominal thread is The diameter is 26mm, the pitch is 8mm, and the lead is 16mm; the screw body [1] is not threaded, and the wall thickness is 2mm.