JP4242675B2 - Front rod for turnout conversion lock - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention belongs to the technical field of a convertible locking device for a railway branching switch, and particularly relates to an improvement of a pin coupling portion (A) of a front rod, a connecting rod and a locking rod joint.
[0002]
[Prior art]
FIG. 5 shows an outline of a branching device including a conventional front rod installed on a rail-related device.
Here, 001 is a basic rail, 002 is a tongrel, 003 is a sleeper, 004 is a connecting can, 005 is a lock cane joint, and 010 is a front rod body.
[0003]
FIG. 3 shows an exploded perspective view of the front rod.
010 is a front rod body, 020 is an elbow fitting, 050 is a core, 030 is a pin, 031 is a collar, 070 is a through hole, and 040 is a jaw (“jaw”; , 012 is a length adjusting mechanism, and 013 is a bracket.
The jaw portion 040 is formed at a portion requiring the pin coupling portion (A) such as both ends of the front rod main body 010 and both ends of the connection rod 004.
The core 050 has a tongue-like shape, and is inserted and held between the forks to be coupled with the jaw portion 040.
The core 050 is provided in a portion requiring the pin coupling portion (A) such as the elbow fitting 020, the bracket 013, and the lock lock joint 005.
The length adjusting mechanism 012 and the bracket 013 are provided in the middle of the front rod body 010. In some cases, a single member may serve both functions.
[0004]
The connection can 004 has one end coupled to the core 050 of the bracket 013 and the other end connected to the core of the lock cane joint 005.
The lock cane joint 005 is connected to the lock cane and is further connected to an electric switch (see FIG. 5).
The front rod body 010 is disposed between the tongrels 002 corresponding to the respective basic rails 001, and jaws 040 are provided at both ends thereof, and the core 050 of the elbow fitting 020 is between the forks of the jaws 040. A pin coupling portion (A) is formed by the pin 030 inserted and sandwiched and passed through the through hole 070.
[0005]
A similar pin coupling portion structure is also used in coupling between one end of the jaw portion 040 provided at both ends of the connecting can 004 and the core 050 formed on the bracket 013, or coupling between the other end and the lock cane joint 005. Has been applied.
The electric switch is a device that moves the Tongleil 002 according to its conversion operation, opens the railroad rail in a direction different from the current direction, checks the displacement and position of the Tonglele 002, and holds the lock. is there.
Thus, the electric switch moves the Tongrel 002 in a desired direction by the conversion operation, checks the position thereof, opens the railroad rail in a direction different from the current direction, and securely holds the lock.
[0006]
Therefore, in the convertible locking device of the branching device, the position detection of the normal conversion end of the Tongrel 002 is normally performed by transmitting the mechanical displacement as follows.
Tongue rail 002 → Elbow bracket 020 → Pin coupling part (A) → Front rod body 010 → Bracket 013 → Pin coupling part (A) → Connecting rod → Pin coupling portion (A) → Locking lock joint → Locking lock → Electric The lock piece inside the switch is transmitted to a wind called a circuit controller inside the electric switch so that the electric switch operates in a predetermined manner.
[0007]
FIG. 4 shows a cross-sectional view of a conventional pin coupling portion (A).
Jaw pins 033 are used as pins. A core 050 is inserted and sandwiched between the forks of the jaw portion 040, and is joined by a jaw pin 033 inserted through the through hole 070, and the trailing end is prevented by a retaining ring, a split pin or the like.
The collar portion 031 is generally a square shape such as a square (see, for example, FIG. 3).
[0008]
Here, the pin coupling portion (A) will be referred to.
The pin coupling portion (A) rotates under a constant shear load every time the branching device performs a switching operation. In addition, when the train passes after the turnover of the turnout, a load in the shearing direction is repeatedly applied due to the opening behavior of the tongrel 002 due to the vehicle weight and speed.
Further, when the train passes, a composite load is further applied to the pin coupling portion (A) due to vibration of the passage and the like.
The jaw pin 033, the jaw portion 040, and the core 050 are oscillated according to the external force applied at appropriate locations, and are repeatedly slid and rubbed.
[0009]
In such a usage environment, the pin coupling portion (A) is reduced in the outer diameter of the pin and enlarged in the through hole 070 due to wear and accumulation of minute deformation.
When such a dimensional gap is widened in the pin coupling portion (A), a large error occurs in the mechanical displacement transmission system described above (“0006”), and the mechanical check function is hindered.
In other words, even if a foreign substance having a thickness greater than a specified thickness is present in the track, it may be undetectable or cause a false detection even though the conversion has been completed normally.
[0010]
By the way, for lubrication, lubrication to the sliding portion is performed at a certain frequency.
However, due to structural restrictions such as the lack of oil reservoirs and restrictions from the usage environment such as intermittent low-speed micro-rotation, sufficient fluid lubrication could not be realized, leading to boundary lubrication. .
Furthermore, with the recent reduction in personnel and the number of skilled maintenance personnel, it seems that the actual situation is that it is rather unlubricated.
Thus, if the oil film on the surface of the jaw pin 033 or the through hole 070 is damaged, it will be in a poorly lubricated state, and if foreign substances such as corrosion products enter the sliding surface, it will cause abnormal wear.
Here, the equipment that has become defective due to an increase in friction is replaced with a new one, or the replacement cycle with a new one is extended by maintenance.
In the era when skilled maintenance personnel were sufficient, they devised a way to extend the replacement cycle by drilling through holes one size larger and adjusting each place using pins one size larger. However, it is clear that it is not an essential solution, and nowadays it is an era when such measures are not allowed.
[0011]
Railroad equipment is often used continuously outdoors, and is exposed to flames, extreme cold, heavy rain, inundation, dust, and pollutants associated with the season, weather, weather conditions, etc. It is necessary to consider various conditions.
In the pin coupling portion A, it is impossible to extend the life of the equipment and the replacement period unless measures for reducing wear are realized. In addition, it is indispensable to improve the surface hardness of the sliding surface and the static strength of the component itself even for the accumulation of minute deformations.
Here, in order to solve the problem, first, a structure in which the sliding portion is limited is adopted, and for the sliding portion limited to the second, thorough lubrication, surface hardness, and static strength are provided. It is necessary to take measures to improve and reduce wear.
[0012]
[Problems to be solved by the invention]
The invention of the present application is directed to a front switch rod having a pin coupling portion (A), which reduces the wear of the pin coupling portion, thereby prolonging the device life and extending the maintenance frequency. The purpose is to reduce costs and enable maintenance with less maintenance personnel.
[0013]
[Means for Solving the Problems]
A first invention of the present application, which is a means for solving the problems of the present application, is a front rod for a branching-converter locking lock having a pin coupling portion (A), and the pin coupling portion (A) is a collar portion (031). The jaw part (040) and the core (050) are connected by a pin (030) having a pin, and a through hole (070) is formed in each of the jaw part (040) and the core (050). and fitting the core (050) to the connection portion of the bifurcated (040), core (050)) and the jaw part by inserting the pin (030) into the through-hole (070) of the jaw portion (040) (040 ) And the core (050) are pivotally connected to the front rod for a branching switch locking lock, and a self-lubricating sliding bearing (060) is provided in the through hole (070) of the core (050). turnout conversion locking for a front rod, characterized in that the A.
[0014]
The second invention of the present application, which is a means for solving the problems of the present application,
The pin coupling portion A is provided between the elbow bracket 020 and the front rod body 010, between the bracket 013 of the front rod body and the connection rod 004, or between the connection rod 004 and the lock cane coupling 005. It is a front rod for a branching device conversion locking lock according to the first invention of the present application.
[0015]
A third invention of the present application, which is a means for solving the problems of the present application, is characterized in that the sliding bearing 060 forms a film with a solid lubricant, and the front for a branch-converter lock according to the first or second invention of the present application It is a rod.
[0016]
First to fourth invention is the sliding portion surface hard chrome plating of the pin 030, or electroless nickel-plated treatment wherein Rukoto is a means for solving the problems of the present application, second or 3 is a front rod for a branch-converter lock of the present invention.
[0017]
The fifth invention of the present application, which is means for solving the problems of the present application, is characterized in that the pin (030) comprises a jaw pin 033 or a reamer bolt 034. It is a front rod.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a cross-sectional view of the pin coupling portion A of the present invention. An embodiment in which a jaw pin 033 is used for the pin 030 is shown.
FIG. 2 shows a cross-sectional view of the pin coupling portion A of the present invention. Pin 030 shows an embodiment using a reamer bolt 034.
A core 050 is inserted and clamped between the forks of the jaw portion 040, and a jaw pin 033, a reamer bolt 034, etc. are inserted into the through hole 070 to constitute a pin coupling portion A. Here, the end of the jaw pin 033 is fixed with a retaining ring, a split pin or the like, and the end of the reamer bolt 034 is threaded and fixed with a flat washer, a detent nut or the like.
As shown in the example shown in FIG. 5, the pin coupling portion A is provided between the elbow bracket 020 and the front rod main body 010, between the bracket 013 of the front rod main body and the connection rod 004, or between the connection rod 004 and the lock pin coupling 005. Between.
In this example, the number of installation locations is three in this example, and the number of locations is four. However, both types of locations can be installed as necessary within the range.
[0019]
The feature of the present invention is that an engaging portion 032 is provided in the flange portion 031 of the jaw pin 033 and the reamer bolt 034, and a response portion 071 is provided in the through hole 070 of the jaw portion 040, thereby preventing the rotation of both in the assembled state. is there.
If this collar portion 031 has a square shape such as a quadrangular head, it has a straight portion and a corner portion, so that it can be used as the engaging portion 032 as it is. Separately, for example, a non-circular concave angle, convex angle, concave portion, or the like may be provided. Further, if the collar portion 031 is a disc shape, a part of the circumference may be cut out. Further, it is also convenient to cut both sides in parallel. Anything that is non-circular may be used.
[0020]
On the other hand, the response portion 071 of the through hole 070 of the jaw portion 040 is a portion corresponding to the engaging portion 032 of the flange portion 031, as long as both of them can be fitted to prevent mutual rotation.
Accordingly, the shapes of the engaging portion 032 and the response portion 071 can be any shape as long as the rotation preventing function can be achieved in cooperation. Groove processing or a rotation prevention mechanism may be provided to fulfill the rotation prevention function.
This anti-rotation function is very important in terms of limiting the frictional part.
[0021]
The next feature of the present invention is that a self-lubricating sliding bearing 060 is provided in the rotating portion, that is, the sliding portion, and the wear-resistant treatment of the sliding portion is effectively performed.
The sliding bearing 060 is disposed in the through hole 070 of the core 050 to reduce the coefficient of friction with the inserted jaw pin 033 and the reamer bolt 034.
The sliding bearing 060 can use a solid lubricant , and can reduce the amount of wear under the condition of no lubrication and no lubrication due to self-lubricating properties .
High strength on brass base metal tetrafluoroethylene-based lubricant that was dispersed and mixed, or a synthetic resin-based ones or the like disposed filled with 4 ethylene fluoride union fabric sliding surface side of the is excellent. Further, a material having a higher hardness can be employed to prevent accumulation of minute deformation.
The jaw pin 033 and the reamer bolt 034 are advantageously used at least on the sliding portion with a hard chrome plating treatment or an electroless nickel plating treatment to increase the surface hardness and good wear resistance.
Since the sliding part is limited, the friction part is also limited at the same time. By using these plated parts, the generation of corrosion products is greatly suppressed, and abnormal wear due to contamination of the sliding surface is prevented. can do.
[0022]
Further, as the material of the jaw pin 033 and the reamer bolt 034 itself, it is advantageous to use a high hardness steel material obtained by heat-treating a material that can be quenched and tempered with carbon steel for machine structure. A heat-treated chrome / molybdenum steel that can be quenched and tempered is more preferable.
As described above, the sliding surface is limited between the sliding bearing 060 of the core 050 and the jaw pin 033 and the reamer bolt 034, and special wear resistance measures are applied to that portion. It is possible to cause the wear to proceed normally from a limited location.
[0023]
【The invention's effect】
In the front rod for turnout switchable locks, the sliding part of the pin coupling part A is limited, and the sliding part uses a self-lubricating sliding bearing 060 to reduce the friction coefficient and manage the friction. Can be operated.
The sliding surface is limited between the sliding bearing 060 of the core 050 and the jaw pin 033 and the reamer bolt 034, and special wear countermeasures are applied to that portion, so that the wear is controlled and reduced wear is limited. It can be made to progress normally from the spot.
Since the sliding bearing 060 uses a solid lubricant , the friction can be further reduced.
The jaw pins 033 and reamer bolts 034 are hard chrome plated or electroless nickel plated to increase the surface hardness and have good wear resistance. The friction part is limited, and by using these plated ones, the generation of corrosion products can be significantly suppressed, and abnormal wear due to foreign matters mixed on the sliding surface can be prevented.
[Brief description of the drawings]
FIG. 1 shows a cross-sectional view of a pin coupling portion A of the present invention. One embodiment in which a jaw pin 033 is used for the pin 030 is shown.
FIG. 2 shows a cross-sectional view of a pin coupling portion A of the present invention. Pin 030 shows another embodiment using a reamer bolt 034.
FIG. 3 is an exploded perspective view of a front rod body 010.
FIG. 4 shows a cross-sectional view of a conventional pin coupling portion (A).
FIG. 5 shows a schematic of a branching device including a conventional front rod body 010 installed on a rail-related device.
[Explanation of symbols]
001 ... Basic rail 002 ... Tongue rail 003 ... Sleeper 004 ... Connection hook 005 ... Locking lock joint 006 ... Locking lock 010 ... Front rod body 012 ... Long Adjusting mechanism 013 ... Bracket 020 ... Elbow bracket 030 ... Pin 031 ... Gutter part 032 ... Engagement part 033 ... Jaw pin 034 ... Reamer bolt 040 ... Jaw part 050・ ・ Core 060 ・ ・ ・ Sliding bearing 070 ・ ・ ・ Through hole 071 ・ ・ ・ Corresponding part A ・ ・ ・ Pin coupling part

Claims (5)

It is a front rod for a branching switch locking lock provided with a pin coupling part (A), and the pin coupling part (A) has a jaw part (040) and a core (050) by a pin (030) having a collar part (031). ) and are connected to said jaw portion (040) and said the core (050) to form a respective through hole (070), the core connection portion of bifurcated said jaw portion (040) ( 050) fitted to said core and (050) and the through hole (the jaw part by inserting the pin (030) to 070) (040) and the core of the jaw portion (040) (050) A branching switch locking front rod that is rotatably connected to each other, wherein a self-lubricating sliding bearing (060) is provided in the through hole (070) of the core (050). Front rod for convertible lock. The pin coupling portion (A) is between the elbow bracket (020) and the front rod body (010), between the bracket (013) of the front rod body (010) and the connection rod (004), or the connection rod (004). ) And the locking cane joint (005), the branch rod-converting locking front rod according to claim 1. The front rod for a branching changeable lock according to claim 1 or 2, wherein the sliding bearing (060) forms a film with a solid lubricant . The sliding portion surface hard chrome plating of the pin (030), or electroless nickel plating treatment is claim 1, 2 or 3 branching units conversion locking Front rod wherein Rukoto. It said pin (030) is Jopin (033) or claim 1, 2, 3 or 4 turnout conversion locking Front rod according to, comprising the reamer bolt (034).

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