Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
  • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
  • B61L5/10—Locking mechanisms for points; Means for indicating the setting of points

Definitions

• the technical solution relates to the construction of a locking of points with a cutting mechanism used to throw over the tongues of the points, especially for railway switches.
• the main disadvantage of the present solution with an externally installed point-operating apparatus is the uneven distribution of the mass in the direction of the sleeper, or the asymmetric mass distribution relative to the track axis. Due to the operation, the trough sleeper with the point-operating apparatus is often rotated towards the more massive side, resulting in an undesired superelevation or steepness in the switch. This often causes failures of the geometric parameters of the track. All these facts lead to more frequent maintenance interventions, such as tamping. In particular on high-speed lines the dynamic behavior is very important in order to minimize the maintenance activity and to improve the comfort when passing through the switch.
• the cylinder with the cutting mechanism is detachably connected by means of hinges with the tongues of the point.
• the cylinder with the cutting mechanism is composed of a cube and two cover tubes, with a cam pivotally mounted in the cube being connected to the levers by involute grooving.
• cam is furthermore advantageous for the cam to be keyed from both sides by means of plugs and the cutting levers being set in a vertical position.
• the plugs are screwed through inserts with the endings, the endings being slidably placed in the hinges of the tongues.
• An advantage of the present invention is that the hook rod of the locking and the mechanism of point-operating apparatus do not take part in the cutting of the point, so that the construction of the point-operating apparatus itself can be less robust and low in mass, which contributes to achieving a balanced distribution of masses around the track axis.
• the abovementioned parts of the locking and point-operating apparatus are not stressed by high dynamic forces at the cutting of the point itself.
• An advantage of the invention is also the provision of the hooks of the locking of points with rollers in order to reduce energy dissipation during throwing over, the hooks not being connected to the tongues.
• FIG. 1 schematically shows an elevation view
• Fig. 2 a plan view
• Fig. 3 a sectional view of the cylinder with the cutting mechanism
• Fig. 4 the throwing-over rod in elevation view and plan view.
• the locking of points of Figs. 1, 2 comprises a cylinder i with a cutting mechanism which is slidably mounted in the frame 9 of the locking of points and connected by means of hinges 13 to the tongues 14 of the point.
• the cylinder I with the cutting mechanism in Fig. 3 is composed of a cube 21 and two tubes 22.
• the cam 23 pivotally mounted in the cube 21 is connected to the levers 24 by involute grooving.
• the cam 23 is keyed from both sides by means of plugs 25 such that the levers 24 are set in a vertical position.
• the pressing force that pushes the plugs 25 against the casing of the cube 21 is induced by means of springs 27.
• the amount of the pressing force can be varied by means of nuts 26 which are screwed from both end sides into the tubes 22 of the cylinder 1 by varying the amount of the deformation of the springs 27.
• the plugs 25 are screwed through inserts 28 with the endings 29 which are slidably placed in the grooves of the hinges 13.
• the hook rod 2 is also slidably placed in the frame 9 of the locking of points.
• the formed connection which is formed between the levers 24 of the cylinder 1 with the cutting mechanism and the pin 7 of the hook rod 2 assures the common operation of the abovementioned components of the locking of points.
• the hooks 3 are pivotally connected to both ends of the hook rod 2 by means of eccentric pins 5.
• the carrier 6 through which the pin 7 passes is clamped in the center of the hook rod 2 by means of screws ⁇ and as for the form by means of a radial peg 12.
• the hooks 3 are provided with rollers 4. In the extreme positions of the tongues 14 one of the hooks 3 always engages behind the respective jaw 10.
• the jaws JO are detachably connected by a screw connection with the stock rails 15 of the rail track.
• the throwing-over rod 8 formed detachably of three parts 8JL, 8,2, 8.3, forms a sliding cam which cooperates on the hooks 3 of the locking of points and slidably passes through the jaws 10 of the stock rails 15.
• the throw over the throwing-over rod 8 starts to move from the extreme position and begins to unlock the locked hook 3 in the jaw of the stock rail 10, thereby it simultaneously unlocks the locked tongue 14 of the point.
• the hook rod 2 carries the cylinder 1, which throws over the tongues 14 of the point up to their extreme position. Subsequently, a further movement of the thro wing-over rod 8 locks the hook 3 in the jaw of the stock rail 10, thereby simultaneously locking the tongue 14 of the point as well.
• the throwing-over rod throws over and locks the tongues in their extreme positions by means of a hook rod and a cylinder with a cutting mechanism.
• the force acting on the free tongue 14 of the point occurs due to the attack of the flange of the rail wheel of the train axle on the free tongue 14 of the point.
• the force acting on the free tongue 14 is transmitted over the hinge 13, the ending 29 and the insert 28 up to the plug 25. It acts against the force of the pressing spring 27, which deforms, and the plug 25 is ejected and releases the keying of the cam 23.
• the release and rotation of the cam 23 occurs around its own axis.
• the levers 24 lose the kinematic connection with the pin 7.
• the cylinder 1 with the cutting mechanism is released from the hook rod 2, thereby releasing the tongues 14_of the point as well.
• the restoration of the kinematic connection between the levers 24 and the pin 7 can be achieved by reverse throwing over of the locking of points.
• the locking of points according to the present invention is designed for throwing over of the tongues of the points, particularly of railway switches.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Train Traffic Observation, Control, And Security (AREA)
• Mutual Connection Of Rods And Tubes (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=58699873

Family Applications (1)

Country Status (3)

Cited By (2)

Citations (3)

Family Cites Families (2)

• 2017
  • 2017-04-06 CZ CZ2017-33584U patent/CZ30652U1/cs active Protection Beyond IP Right Term
• 2018
  • 2018-04-03 EP EP18780906.6A patent/EP3607144A4/en active Pending
  • 2018-04-03 WO PCT/CZ2018/000012 patent/WO2018184603A1/en not_active Ceased

Patent Citations (3)

Non-Patent Citations (1)

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