Car coupler, coupler knuckle and coupler body

Abstract

The invention discloses a car coupler, a coupler knuckle and a coupler body. An upper traction table and a lower traction table of the coupler knuckle and the coupler body are arranged in a horizontaldirection in a staggered manner, thereby avoiding the situation that heads of the upper traction table and the lower traction table of the coupler knuckle and the coupler body are located in the samevertical direction, further implementing staggered distribution of weak parts of a high stress region of the upper traction table and the lower traction table of the coupler knuckle and greatly reducing stress of the upper traction table and the lower traction table. Furthermore, an offset amount of each of the upper traction table and the lower traction table is in the range of 5-25 mm; the offset amount is more reasonable, so that a distance between the traction tables and an impact table is not too close, thus deterioration of the stress state of the part caused by abrupt change of a structure between the traction tables and the impact table is avoided. In conclusion, according to the coupler knuckle and the coupler body provided by the invention, the stress can be reduced, the problemof premature fracture of the upper and lower traction tables is avoided, the service life of the coupler knuckle is prolonged, the maintenance cost is reduced and the safe reliability of transportation is improved.

Description

Technical field [0001] The invention relates to the technical field of railway transportation, and more specifically, to a coupler, a hook and a hook body. Background technique [0002] The coupler is one of the most basic and important parts of a railway vehicle. It is installed at both ends of the vehicle to connect two adjacent vehicles and transmit the longitudinal force of the train. There are many types of couplers, but the most widely used couplers are articulated couplers, such as figure 1 As shown, the articulated coupler includes a hook body 03, a shackle 01, a shackle lock, a shackle pusher, a shackle pin 02 and other parts. The shackle 01 can rotate around the shackle pin 02 to open and close the coupler. The main load-bearing parts inside the coupler are the traction platform of the knuckle 01 and the traction platform of the hook body 03. Such as figure 2 As shown, two couplers are connected to realize the connection of two adjacent vehicles. [0003] Currently, su...

AI Technical Summary

Problems solved by technology

In this way, the upper and lower traction surfaces of the knuckle and the hook body are in the same vertical direction, which further deteriorates the stress state of the root section of the upper and lower traction tables of the knuckle and the hook body, which is more likely to cause fracture problems and reduces the use of the knuckle. service life, increasing the cost of replacement and maintenance of the coupler, and affecting the safety of train operation

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