Movable point frog

Abstract

The present invention provides a movable point frog. In this application, quasi-continuity of rails is achieved at the frog, so that a gap in the frog is eliminated, vibration and noise are reduced, and transverse impact of wheels is eliminated. Guard rails do not need to be disposed. The frog itself does not limit the speed of a train running on a main line and a branch line. Therefore, the train running on the main line can pass through the frog without reducing the speed. A relatively small curve radius and a relatively large frog angle may be adopted for the branch line. Compared with integrally cast frog equipment in the prior art, all the components in this application are detachably connected, and therefore can be simply mounted, easily maintained, and produced in batch.

What is claimed is: 
     
         1 . A movable point frog, comprising a frog assembly and a wing rail assembly, wherein the wing rail assembly comprises a first wing rail and a second wing rail that are symmetrically distributed; the frog assembly comprises a frog solid body, a first fixing bottom plate, a traction apparatus, a first exit rail detachably connected to the first fixing bottom plate, a second exit rail detachably connected to the first fixing bottom plate, and a rotating shaft fixedly disposed at the first fixing bottom plate, wherein the first exit rail and the second exit rail are symmetrically distributed, the first exit rail and the first wing rail are located on the same side, and the second exit rail and the second wing rail are located on the same side; and the frog solid body and the first fixing bottom plate form a rotating mechanism via the rotating shaft, the traction apparatus is drivingly connected to the frog solid body and enables the frog solid body to rotate around the rotating shaft, when one side face of the frog solid body abuts against the first wing rail, the other side face of the frog solid body is flush with the second exit rail, and when one side face of the frog solid body abuts against the second wing rail, the other side face of the frog solid body is flush with the first exit rail. 
     
     
         2 . The movable point frog according to  claim 1 , wherein the frog assembly further comprises a first fixing bracket and two first rail pressing plates, the first fixing bracket is fixedly disposed on the surface of the first fixing bottom plate via a bolt, and the first exit rail and the second exit rail are respectively detachably connected to two sides of the first fixing bracket via the first rail pressing plates. 
     
     
         3 . The movable point frog according to  claim 1 , wherein the wing rail assembly further comprises a second fixing bottom plate, two second rail pressing plates, and a second fixing bracket detachably connected to the surface of the second fixing bottom plate, and the first wing rail and the second wing rail are respectively detachably connected to two sides of the second fixing bracket via the second rail pressing plates. 
     
     
         4 . The movable point frog according to  claim 1 , wherein a drainage hole is provided in the surface of the first fixing bottom plate, between the first exit rail and the second exit rail. 
     
     
         5 . The movable point frog according to  claim 1 , wherein the frog solid body is integrally formed by a first frog body located at a front end and a second frog body located at a rear end, the first frog body has a triangular cross section, and the second frog body has a trapezoidal cross section; and a rotating shaft hole that penetrates through the frog solid body vertically is provided at a joint between the first frog body and the second frog body, the frog solid body is assembled with the rotating shaft through the rotating shaft hole, and forms the rotating mechanism with the first fixing bottom plate. 
     
     
         6 . The movable point frog according to  claim 5 , wherein the first frog body is disposed between the first wing rail and the second wing rail, the second frog body is disposed in a notch formed by the first exit rail and the second exit rail, and the second frog solid body is kept at a distance from inner side faces of both the first exit rail and the second exit rail, respectively. 
     
     
         7 . The movable point frog according to  claim 5 , wherein the traction apparatus comprises a tractor and a pulling plate fixedly connected to the bottom surface of the first frog body, two ends of the pulling plate are provided with a traction mounting hole, respectively, and a driving end of the tractor is assembled with the traction mounting hole and enables two side faces of the first frog body to respectively abut against an inner side face of the first wing rail and an inner side face of the second wing rail tightly. 
     
     
         8 . The movable point frog according to  claim 1 , further comprising a fixing assembly used to connect the wing rail assembly and the frog assembly, wherein the fixing assembly is located between the wing rail assembly and the frog assembly; and the fixing assembly comprises symmetrically distributed fixing apparatuses, each fixing apparatus comprises a connecting plate and two limiting plates, two ends of the connecting plate are respectively fixedly disposed on the surfaces of the first fixing bottom plate and the second fixing bottom plate via a bolt, and the two limiting plates are fixed on the first fixing bottom plate and the second fixing bottom plate via bolts and abut against the two ends of the connecting plate tightly.