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 invention concerns the lock mechanism of adjusting cases for re-setting of tongues of tram and railway switches, locking of the adjacent tongue of switch and facilitation of safe passage for rail vehicles.
• the hitherto known and used mechanisms of locks of the tongues of tram and railway switches can be classified according to the way of locking as simple self-locking and non-self-locking with under-latching.
• Self-locking locks use the principle of self-locking of the snap and counter-pieces functional areas, keeping the mechanism in locked position only by friction, supported by possible spring pressure.
• Samples of realisation include various lever and gate-type mechanisms. In case of manual or mechanised re-setting, the mechanism is usually completed with an ejecting mechanism of snaps.
• the non-self-locking under-latched locks of other mechanisms used eliminate the above stated disadvantages by using non-self-locking friction angles of function latching areas. Due to safety reasons, the solution must be completed with the mechanism of under-latching, ideally in combination with gradual running of the tongues of switch for reaching high-quality and multiple cut of the lock.
• the disadvantages of this solution include much more complicated, larger and financially more demanding structures.
• the disadvantage of sliding locks with latching is the complicated setting of rise dimension, in case of switches for the 1 000 mm gauge it is complicated construction layout of individual parts of the case equipment, in consideration of large width of blocking systems.
• the disadvantage of the lock mechanisms is the fact that the cutting power of the adjacent and remote tongue is limited by the friction power extent.
• the manual (emergency) re-setting is performed - in case of this type - with very high resetting power, as during resetting the spring is packed and the latches prevent by significant friction any free movements of the pull.
• the latch is in touch - through pivots with roller bearings - with one of the ends of two-arm levers placed on pivots, while the other ends of two-arm levers are connected through the pivots with the telescopic pull with the pressure spring.
• lock mechanism advantages include locking of the adjacent tongue by sub-latching, multiple non-destructive cuts (based on the principle of initial pushing of the distant tongue from the terminal position), while keeping full functionality and reliability of the lock.
• the lock is designed as a low one, designed for use in low adjustment cases of tram switches, with integrated function of adjacent tongue locking control and reaching the terminal position of the distant tongue, while the setting of sensors is constant for the whole range of rise.
• the rise adjustment using the adjustment (setting) screw is very fast.
• Another undisputed advantage includes very low friction power, even thanks to the pushing spring, preventing wear and tear of contact surfaces of latches and related more frequent adjustments for the latch test.
• the lock mechanism according to fig. 1. and fig. 2 with straight movement includes stators i, 5, pulls ⁇ , 21_, latch 3_i equipped with hook segments 32, 33 and two- arm levers 42, 52 matching the latch 3h
• Each of the pulls JJ,, 21_ contains a pushing latch !3_, 23, while each latch 13, 23 contains a pushing balance latch 14, 24 in a hole that is not shown.
• Each of the pulls JJ_, 2_1 contains the recession 1_5, 25 for the hook segment 32, 33 placed on the latch 3_1 and each hook segment 32, 33 placed on the latch 3_1 is equipped with recession 321, 331 for the latch 13, 23.
• the latch 3_1 is connected by detachable joint with position sensors 34, 35 through holders 36, 37.
• the pulls H, 2J_ are equipped with a shaped edge 1_7, 27 for sensing their position.
• the pulls 11, 2_1 and the latch 3_1 contain — in compliance with fig. 2 - grooves 16 ⁇ , 26, 39 for bearing balls 77 placed in matching grooves 74, 78 on the base plate 71 and cover 75, while the grooves 1_6, 26, 39, 74, 78 are parallel, which allows straight parallel motion of the pulls H, 2J_ and the latch 3 L
• the stators 1, 5_ according to fig. 1 are placed in parallel with the latch 3J_ and pulls JJ_, 21 on the bed 73 symmetrically in relation to the backstop 72, while their position is adjustable using adjusting (setting) screws 3, 7 organised on the backstop 72.
• the rise of the lock mechanism adjusted by the screws 3, 7 is fixed in defined position using tightening bolts 4, 8 fastened to the base plate 71 according to fig. 2.
• Stators 1, 5 are equipped with shape segments 2, 6 facing the latches H, 23 on pulls H, 2J_.
• the latches 13, 23 are equipped with inclined function areas 131, 132, 231, 232 for matching inclined function areas 201, 601, 322, 332 of shape segments 2, 6 and recessions 321, 331 of hook segments 32, 33_.
• the latch 3_1 is in touch - through pivots 44, 54 with roller bearings 43, 53 - with one of the ends of two-arm levers 42, 52 placed on pivots 41_, 5_1, while the other ends of two-arm levers 42, 52 are connected through pivots 45, 55 with the telescopic pull 6L
• the telescopic pull 6_i consists of the case 66 with boss 661 containing pushing shaft 67 with boss 671, while the telescopic pull 6_1 is spring-loaded using the pressure spring 62 placed among the bosses 661, 671.
• the strength of the pushing spring 62 is set by the setting nut 65, axial bearing 64 and mat 63 placed on the shaft 67.
• the linear straight motion of the latch 3_1 is arranged from the swinging motion of the driving shaft by known gate-type mechanism 81, while fig. 1 shows the shaft 811 with the gate piece 812, not shown stone and main pivot of the latch 38.
• the mechanic according to fig. 2 is arranged on the base plate 71 and covered with the cover 75, placed on pivots 41, 5_1 with not shown recess for the cover 75 and secured to the base plate 71 by tightening bolts 76 in such a way so as the bearing balls 77 are placed in grooves 16, 26, 39, 74, 78 arranged on the base plate 71 and on the cover 75, pulls 1_1, 2_1 and latch 31_. So as to arrange balanced arrangement of bearing balls TT 1 the grooves 16 ⁇ , 26 are equipped with a partition element.
• Fig. 1 and 3 show the status when the lock mechanism is in its central indifferent position, when the left latch 13 is fixed in the position by the left balance latch 14 and the right latch 23 is free without any pre-tension.
• the right pull 2_1 is movement - coupled with the segment 3J> of the latch 3_1 and the recession 25, while he right latch 23 is inserted into the recession 33_i of the right hook segment 32 of the latch 3L
• the left latch 13 with its inclined function area 132 leans on the inclined function area 322 of the recession 321 of the left hook segment 32, while the right latch 23 with its inclined function area 232 leans on the inclined function area 332 of the recession 331 of the right hook segment 33.
• the latch 3_1 is kept in indifferent poison by the pivots 44, 54 with roller bearings 43, 53, touching the transition areas 313, 314 of the latch 3L
• the transition areas 313, 314 connect the front 310 of the latch 3_1 with its side areas 311, 312.
• Fig. 4 shows the status of the lock mechanism with the left balance latch 14 touching the left stator 1 and inserted in the left pull ⁇ , which de-blocks the left latch 13 . and it may freely move from the recession 321 of the left hook segment 32 of the latch 31 to the space delimited by the left stator I and its shape segment 2 in the direction perpendicular to the direction of the latch 3_1 movement.
• the left pull H is in limit left position and the right pull 2_1 is movement - - coupled with the segment 33 of the latch 31 and the recession 25, while he right latch 23 is freely inserted into the recession 331 of the right hook segment 32 of the latch 3_1.
• Fig. 5 shows the status of the lock mechanism with the latch 3_i, left and right pulls ⁇ , 2_i in their limit left positions.
• the left pull ⁇ touches the left stator I together with the left balance latch JA
• the left latch 1J3 is pushed out of the recession 321 of the hook segment 32 of the latch to the area delimited by the left stator I and its shape segment 2, and the latch 3_1 locks it
• the left position sensor 34 located on the latch 31 indicates the shape edge 17 of the left pull 1_1 and it is connected to the ,,switch on" status.
• the right pull 21 touches the left pull 1_1, and the left balance latch 14 touches the right balance latch 24, which puts the right latch 23 to working position, with its end placed in the recession 331 of the right hook segment 33_ of the latch 3L
• the latch 3J_ is hold in limit left position by the pivot 44 with roller bearings 43, touching the front 310 of the latch 3_1 and the pivot 54 with roller bearings 53, touching the side area 312 of the latch 3_1, or - in case of low setting of the mechanism rise (in concrete terms - fig. 5) - the side part of the transition area 314.
• the left pull H is taken from its initial position according to fig. 3 by the left latch 13 placed in the recession 321 of the left hook segment 32 of the latch 3_i by straight movement to the left side.
• the left latch 13 is fixed in that position by the left balance latch IA
• the right pull 2J . is simultaneously carried by the right hook segment 33 of the latch 31 placed in the recession 25 of the right pull 2_1, while the right latch 23 is free, i.e. without any pretension and the right balance latch 24 is carried together with the right pull 2L During the next movement of the latch 31 to the left according to fig.
• the right pull 2_i is simultaneously carried by the latch 3_1 through the right hook segment 33 of the latch 3J, placed in the recession 35 of the right pull 2L
• the left pull H does not move any further.
• the left latch 13 is pushed - based on the next movement of the latch 3_1 through its inclined function area 131 via the inclined function area 322 from the recession 321 of the hook segment 32 of the latch 3_1 and so its inclined function area 131 slides on the inclined function area 2_1 of the shape segment 2 and it is inserted to the area delimited by the left stator 1 and its shape segment 2.
• the left latch 13_ is fully pushed out of the recession 321 of the hook segment 32 of the latch 3_i and under-passage of the latch 3_1 under the left latch 13, which locks the left pull H through the left latch 13.
• the holder 36 with left position sensor 34 switches to the ,,switch on" status by touching the shape edge 16 of the left pull 1_1.
• the movement of the latch 3_1 according to fig. 5 is stopped in the position, when the pulls H, 21 touch each other, which delimits the terminal position of the right pull 2L
• the right balance latch 24 to its operation position, in which it sets the right latch 23 to new working position, when the right latch 23 is placed in the recession 321 of the right hook segment 32 of the latch 3L
• the sensing of the status of sub-latching is differential and it is set by the difference position of the latch 3_1 and the left pull 11.
• the movement of the left and right pull H, 2 ⁇ from indifferent position to the left is completed with a different geometric position of two-arm levers 42, 52 and consequent difference power effect to the latch 3_1 through the roller bearings 43, 53.
• the latch 3J moves from its indifferent position according to fig. 1, when the roller bearings 43, 53 touch the latch 3_1 on transition areas 313, 314, to its limit left position according to fig.
• the right pull 2 ⁇ is carried by using the fixed right latch 23 secured by the right balance latch 24 in the recession 331 of the right hook segment 33 of the latch 3L
• the left pull JJ is deblocked from its locked position and it remains still, while the left position sensor 34 ceases to indicate the shape edge 1/7 of the left pull ⁇ and the left position sensor 34 disconnects to the status ,,switched off.
• Fig. 7 shows de-latching using non-destructive cut by pushing off the non-shown distant tongue, when - while the right pull 21 moves from the left limit position to the right - the latch 3_1 is carried by the right hook segment 32 placed in the recession 25 of the right pull 2L Similarly as in fig. 6, the left pull H is de-blocked from locked position and it remains still, while the left position sensor 34 ceases to indicate the shape edge J/7 of the left pull JJ, and the left position sensor 34 disconnects to the status ,,switched off. The next movement of the latch 3_1_ to the right according to fig.
• the lock mechanism can be advantageously used for adjusting cases for re-setting of tongues of tram and railway switches into both limit positions.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Train Traffic Observation, Control, And Security (AREA)
• Lock And Its Accessories (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36754503

Family Applications (1)

Country Status (2)

Citations (4)

• 2005
  • 2005-11-08 CZ CZ200517152U patent/CZ16068U1/cs not_active IP Right Cessation
• 2006
  • 2006-11-02 WO PCT/CZ2006/000075 patent/WO2007054038A1/en active Application Filing

Patent Citations (4)

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