JP2010284730A - Split cotter pin tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a split cotter pin tool efficiently attaching a split cotter pin. <P>SOLUTION: The split cotter pin tool 10 is for splitting a pair of split pins, which are used for preventing dropping of a jaw pin disposed at a connection portion of a pair of rod members, in directions to separate from each other. The split cotter pin tool includes a head support part 11 for supporting the head of the jaw pin; a bottom support part 12 which supports the bottom of the jaw pin, and is provided with a split cotter pin head support portion for supporting the head of the split cotter pin; and a split cotter pin splitting part 14 which is disposed below the bottom support part, and has a projection 35 abuttable against the pair of pins, and moves the projection in the direction to separate the pair of pins from each other. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a split pin tool.

  Conventionally, an electric switch is installed at a branch point of a railway track. In general, an electric switch is provided with a rod member such as a locking cane connected to a Tongrel or an operation cane for changing a movable part of a branching device. The connecting portions of the rod members are provided with jaw pins, and a pair of rod members to be connected are supported so as to be rotatable around the jaw pins. This jaw pin is supported by inserting the split pin through the through hole formed in each of the pair of rod members, inserting the split pin into the split pin insertion hole formed near the tip of the jaw pin, and breaking the tip of the split pin. ing.

  Here, as a tool for breaking the tip of the split pin, a tool described in Patent Document 1 has been proposed. The split pin tool is attached to one end of the main body so as to be openable and closable, and has a pair of claws that are bent inwardly facing each other to form an acute inner end, and the pair of claws are in a normally closed state. A positioning groove that fits the head of the split pin is provided at the position facing the inner end of the spring to be biased and a pair of claws, and the outer periphery of the pin through which the split pin is inserted A guide part provided with a recess to be received, a pair of grasping handles provided on the other end side of the main body so as to be opened and closed, and one end connected to the grasping handle via a link mechanism and the other end connected to the guide part for grasping And a guide rod for moving the guide portion toward the inner end portion via the link mechanism during the closing operation of the steering handle.

JP 56-126588 A

  By the way, the above-described split pin tool of Patent Document 1 has a problem that workability is poor because the split pin tool is not configured to support the pin through which the split pin is inserted (the jaw pin in the present invention).

  Then, this invention is made | formed in view of the above-mentioned situation, and provides the tool for split pins which can attach a split pin efficiently.

  In order to solve the above problems, the invention described in claim 1 is to split a pair of pins of a split pin used for preventing a fall of a jaw pin arranged at a connection portion of a pair of rod members in a direction away from each other. The split pin tool includes a head support portion that can support the head portion of the jaw pin, a split pin head support portion that supports the bottom portion of the jaw pin and can support the head portion of the split pin. The formed bottom support portion and a protrusion portion provided below the bottom support portion and capable of contacting the pair of pins, the protrusion portion being movable in a direction separating the pair of pins from each other. And a split pin splitting section configured.

  The invention described in claim 2 is characterized in that the protrusion is configured to be movable by 30 ° in a direction in which the pair of pins are separated from each other from a state in which the split pin is inserted into the jaw pin. Yes.

  The invention described in claim 3 is characterized in that a concave portion corresponding to the shape of the head portion of the jaw pin is formed in the head support portion.

  According to a fourth aspect of the present invention, the split pin split portion is configured to be movable in the extending direction of the pin in a state where the split pin is inserted through the jaw pin, and the length of the pair of pins is The tip of different split pins is configured to be movable in directions away from each other.

  The invention described in claim 5 is configured such that the pair of pins of the split pin used for preventing the jaw pin arranged at the connecting portion of the switch machine from moving away from each other. It is a feature.

  According to the first aspect of the present invention, when the split pin is attached to the jaw pin, the head portion and the bottom portion of the jaw pin are supported by the head support portion and the bottom portion support portion, respectively. Since it can be made the state supported by the part support part, a split pin can be attached in the state which fixed the position of the jaw pin and the split pin. Therefore, the split pin can be attached efficiently.

  According to the second aspect of the present invention, the split pin can be securely attached to the jaw pin because the split pin can be attached by opening the tip portion of the split pin protruding from the jaw pin at a predetermined angle.

  According to the invention described in claim 3, the jaw pin can be supported more reliably by fitting the head portion of the jaw pin into the recess. Therefore, when the split pin is attached to the jaw pin, the positions of the jaw pin and the split pin can be reliably fixed, so that the split pin can be attached efficiently.

  According to the invention described in claim 4, with respect to the split pin having a pair of pins having different lengths, the protrusion is brought into contact with one of the pins having a longer length, and the protrusion is separated from the other pin. Can be bent at a predetermined angle by moving it in the direction to move, and then the split pin split part is moved so that the projecting part comes into contact with the other short pin and the projecting part is brought into contact with one pin. The other pin can be bent at a predetermined angle by moving in the direction away from the other.

  According to the fifth aspect of the present invention, when the jaw pin and the split pin are attached to the connecting portion of the turning machine, the oil is attached to the surrounding rod members and the like. Since the split pin can be attached while supporting, the split pin can be attached efficiently.

It is a perspective view of the tool for split pins in the embodiment of the present invention. It is a side view of the tool for split pins in the embodiment of the present invention. It is the elements on larger scale of the head support part in the embodiment of the present invention. It is the elements on larger scale of the bottom part support part and cotter pin split part in embodiment of this invention. It is a figure (1) explaining the procedure which attaches a split pin to the jaw pin in embodiment of this invention. It is a figure (1) explaining the procedure which attaches a split pin to the jaw pin in embodiment of this invention. It is a figure (2) explaining the procedure which attaches a split pin to the jaw pin in embodiment of this invention. It is FIG. (3) explaining the procedure which attaches a split pin to the jaw pin in embodiment of this invention. It is a figure (4) explaining the procedure which attaches a split pin to the jaw pin in embodiment of this invention. It is a figure (5) explaining the procedure which attaches a split pin to the jaw pin in embodiment of this invention. It is a figure (6) explaining the procedure which attaches a split pin to the jaw pin in embodiment of this invention. It is a figure (7) explaining the procedure which attaches a split pin to the jaw pin in embodiment of this invention. It is a figure (8) explaining the procedure which attaches a split pin to the jaw pin in embodiment of this invention. It is a figure (9) explaining the procedure which attaches a split pin to the jaw pin in embodiment of this invention. It is a figure which shows the state which attaches a split pin to the jaw pin provided in the connection part of the rod member of a turning machine using the tool for split pins in embodiment of this invention.

Next, an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view of a split pin tool, and FIG. 2 is a side view of the split pin tool. As shown in FIGS. 1 and 2, the split pin tool 10 includes a head support portion 11 that supports the head portion 31 of the jaw pin 30, a bottom support portion 12 that supports the bottom portion 32 of the jaw pin 30, and a split pin 40. And a split pin split portion 14 formed with a projection 35 for splitting the tip portions 41a, 42a of the pair of pins 41, 42 in a desired direction.

  The distance between the head support portion 11 and the bottom support portion 12 is configured to be variable by the grip portion 15. The grip portion 15 includes an upper handle portion 17 and a lower handle portion 18, and the upper handle portion 17 and the lower handle portion 18 are connected via a link mechanism 28. In addition, a lock portion 19 is provided between the upper handle portion 17 and the lower handle portion 18 of the grip portion 15, and the jaw pin 30 is supported between the head support portion 11 and the bottom support portion 12. The positions of the head support part 11 and the bottom support part 12 can be fixed by pushing down the lock part 19 to the lower handle part side. Note that the lock is released when the lock portion 19 is pushed upward again. In addition, the holding part 15 is formed, for example with duralumin.

  As shown in FIG. 3, the head support portion 11 has a recess 21 in which the head 31 of the jaw pin 30 can be fitted in the vicinity of the tip of the lower surface 11 a. Further, the head support portion 11 and the upper handle portion 17 of the grip portion 15 are integrally formed. Further, a fulcrum part 22 is formed at the boundary between the head support part 11 and the upper handle part 17, and the wall part is formed so as to connect between the head support part 11 and the bottom support part 12. 24. That is, the head support portion 11 is configured to move in the direction opposite to the upper handle portion 17 via the fulcrum portion 22 by moving the upper handle portion 17 in the vertical direction. The head support 11 is made of duralumin, for example.

  As shown in FIG. 4, the bottom support portion 12 has a recess 25 in which the bottom portion 32 of the jaw pin 30 can be fitted in the vicinity of the tip portion of the upper surface 12a. In addition, a split pin head support portion 26 into which the head 43 of the split pin 40 can be fitted is formed on the side surface of the concave portion 25 on the gripping portion 15 side. The bottom support portion 12 and the lower handle portion 18 are connected to each other at a fulcrum portion 27 provided on the wall portion 24. In addition, the bottom part support part 12 is formed, for example with duralumin.

  Further, below the bottom support portion 12, there is a projection 35 that can contact the tip portions 41 a and 42 a of the split pin 40, and the projection 35 can be moved in a direction to separate the pair of pins 41 and 42 from each other. The split pin splitting section 14 is provided. The split pin split portion 14 is made of, for example, iron. The split pin split portion 14 is connected to a rotary lever 37 via a rotary shaft 36, and the protrusion 35 can be rotated in the horizontal plane direction by rotating the rotary lever 37 in the horizontal plane direction. The rotating lever 37 is made of, for example, aluminum.

  The split pin split portion 14 is formed with a protrusion 14a protruding from the bottom support portion 12, and a protrusion 35 is formed at the tip of the protrusion 14a. In addition, restricting portions 38 and 38 for restricting the rotation angle of the protruding portion 35 are formed on both sides of the protruding portion 35 in the protruding portion 14a. The restricting portion 38 has a tip 38 a bent upward, and the tip 38 a comes into contact with the bottom support 12 when the projection 35 is rotated by a desired angle (one side 30 ° in this embodiment). Thus, the protrusion 35 is prevented from rotating any further. That is, by rotating the split pin split portion 14 until the tip end portion 38a of the restricting portion 38 contacts the bottom support portion 12, the tip ends 41a and 42a of the split pin 40 can always be bent by 30 °.

Next, a method for attaching a jaw pin to a rod member of an electric turning machine using the split pin tool 10 will be described.
A plurality of rod members are arranged on an electric switch that is disposed along a rail of a railway and changes the traveling direction of the train. These rod members form part of a link mechanism, and a pair of rod members to be connected are connected via a jaw pin 30. A method for attaching the jaw pin 30 to the pair of rod members will be described. The jaw pin 30 used in the electric tipping machine has a thickness (diameter) of 22 mm to 23 mm and a length of 720 mm, and the head 31 is formed in a rectangular shape with a side of 190 mm. The split pin 40 is made of high-strength stainless steel having a thickness of 5 mm and a length of 60 mm of the pins 41 and 42, and a step of 4 mm is formed at the tip of the pins 41 and 42. That is, the pin 41 is formed 4 mm longer than the pin 42.

  First, as shown in FIG. 5A, the jaw pin 30 is inserted into the through holes 53 and 54 formed at the ends of the pair of rod members 51 and 52, respectively. At this time, as shown in FIG. 5B, the jaw pin 30 is inserted from above into the pair of rod members 51 and 52 so that the head portion 31 is located on the upper side and the bottom portion 32 is located on the lower side. . The head 31 of the jaw pin 30 is larger than the through holes 53 and 54.

  Subsequently, as shown in FIG. 6, the split pin 40 is inserted into the insertion hole 33 for the split pin 40 formed on the bottom 32 side of the jaw pin 30. In FIG. 6 and subsequent figures, the pair of rod members 51 and 52 are not shown.

  Subsequently, as shown in FIG. 7, the split pin tool 10 is set. Specifically, the head 43 of the split pin 40 is disposed so as to fit into the split pin head support 26 of the bottom support 12, and the bottom 32 of the jaw pin 30 is fitted into the recess 25 of the bottom support 12. Arrange to match.

  Subsequently, as shown in FIG. 8, the operator grasps the grip portion 15, moves the head support portion 11 downward, and the head portion 31 of the jaw pin 30 fits into the concave portion 21 of the head support portion 11. Move up. Note that the bottom 32 of the jaw pin 30 is held in a state of being fitted in the recess 25.

  Subsequently, as shown in FIG. 9, the head support portion 11 and the bottom support portion are supported by moving the lock portion 19 toward the lower handle portion 18 while the head portion 31 and the bottom portion 32 of the jaw pin 30 are supported. The position of the part 12 is fixed.

  Subsequently, as shown in FIG. 10, the protruding portion 35 of the split pin split portion 14 is brought into contact with the tip portion 41 a of one pin 41 of the split pin 40.

  As shown in FIG. 11, one pin 41 is bent with respect to the jaw pin 30 by rotating the rotating lever 37 counterclockwise. Then, the rotating lever 37 is rotated until the restricting portion 38 formed on the split pin split portion 14 comes into contact with the bottom support portion 12. Here, one pin 41 is bent by 30 °.

  Subsequently, as shown in FIG. 12, the rotating lever 37 is returned to the original position, the position of the projection 35 is returned to the original position, and the rotating lever 37 is separated from the jaw pin 30 as shown in FIG. By pulling in the direction (front side), the protrusion 35 is disposed so as to contact the tip 42 a of the other pin 42.

  As shown in FIG. 14, by rotating the rotating lever 37 clockwise, the other pin 42 is bent with respect to the jaw pin. Then, the rotating lever 37 is rotated until the restricting portion 38 formed on the split pin split portion 14 comes into contact with the bottom support portion 12. Here, the other pin 42 is bent by 30 °.

  And the lock | rock part 19 is cancelled | released and the attachment of the jaw pin 30 and the split pin 40 is completed by removing the tool 10 for split pins. FIG. 15 shows a state where the pair of rod members 51 and 52 are actually connected by the jaw pins 30 and the split pins 40 are attached to the jaw pins 30. Thus, even in a narrow place on the crushed stone 55 beside the track, the split pin 40 can be attached by inserting the split pin tool 10 into the connecting portion.

  According to this embodiment, when attaching the split pin 40 to the jaw pin 30, the head portion 31 and the bottom portion 32 of the jaw pin 30 are supported by the head support portion 11 and the bottom portion support portion 12, respectively. 43 can also be supported by the split pin head support portion 26, so that the split pin 40 can be attached with the positions of the jaw pin 30 and the split pin 40 fixed. Therefore, the split pin 40 can be attached efficiently. Moreover, even if it is a high intensity | strength split pin, it can attach by setting it as such a structure.

  In addition, since the restricting portion 38 is formed in the split pin split portion 14, the distal end portions 41a and 42a of the split pin 40 protruding from the jaw pin 30 are opened at a predetermined angle (30 ° in this embodiment), and the split pin 40 is opened. Since it can be attached, the split pin 40 can be securely attached to the jaw pin 30. Note that opening the split pin 40 by 60 ° with respect to the jaw pin 30 is defined as a regulation value of the railway company.

  Further, by fitting the head portion 31 of the jaw pin 30 into the recess 21, the jaw pin 30 can be supported more reliably. Therefore, when attaching the split pin 40 to the jaw pin 30, the positions of the jaw pin 30 and the split pin 40 can be reliably fixed, so that the split pin 40 can be attached efficiently. Moreover, even if oil etc. have adhered to the circumference | surroundings, the jaw pin 30 can be fixed reliably without slipping.

  In addition, since the split pin split portion 14 formed with the protrusion 35 is configured to be movable in the extending direction of the pins 41 and 42 in a state where the split pin 40 is inserted into the jaw pin 30, a pair of pins 41 having different lengths are provided. , 42, the projection 35 is brought into contact with one long pin 41 and the projection 35 is moved away from the other pin 42, thereby moving the pin 41 Can be bent at a predetermined angle, and then the split pin split portion 14 is moved so that the projection 35 is brought into contact with the other short pin 42 so that the projection 35 is separated from the one pin 41. By moving it, the other pin 42 can be bent at a predetermined angle.

  Further, when the jaw pin 30 and the split pin 40 are attached to the connecting portion of the turning machine, oil is adhered to the surrounding rod members and the like. Since the split pin 40 can be attached while supporting the head portion 31 and the bottom portion 32, the split pin 40 can be attached efficiently. Note that a plurality of jaw pins 30 are arranged on the tipping machine, and many jaw pins 30 are attached to a narrow place. However, the split pin tool 10 according to the present embodiment supports the jaw pins 30 even in such a narrow place. A pin 40 can be attached. Further, when the pin 10 is attached to a place where there is no distance from the ground surface, such as the jaw pin 30 attached to the connecting portion of the turning machine, the split pin tool 10 supports the jaw pin 30 so as to be inserted from the side. Therefore, the split pin 40 can be attached without any problem. Therefore, working efficiency can be improved.

Note that the present invention is not limited to the above-described embodiment, and includes various modifications made to the above-described embodiment without departing from the spirit of the present invention. That is, the specific materials, configurations, and the like given in the embodiment are merely examples, and can be changed as appropriate.
For example, in this embodiment, although the case where the split pin was attached to the jaw pin provided in the tipping machine was described, the present invention is not limited to this, and the present invention can be applied to a place where the jaw pin and the split pin are used.

  DESCRIPTION OF SYMBOLS 10 ... Split pin tool 11 ... Head support part 12 ... Bottom part support part 14 ... Split pin split part 21 ... Recessed part 26 ... Split pin head support part 30 ... Jaw pin 31 ... Head 32 ... Bottom part 35 ... Projection part 40 ... Split pin 41 ... One pin (a pair of pins) 42 ... The other pin (a pair of pins) 43 ... Head 51 ... Rod member 52 ... Rod member

Claims (5)

A split pin tool for splitting a pair of pins of a split pin used for preventing a jaw pin arranged at a connecting portion of a pair of rod members in a direction away from each other,
A head support portion capable of supporting the head of the jaw pin;
A bottom support portion formed with a split pin head support portion that supports the bottom portion of the jaw pin and can support the head portion of the split pin;
A split pin split portion provided below the bottom support portion and having a protrusion capable of coming into contact with the pair of pins and configured to be able to move the protrusion in a direction away from the pair of pins; A split pin tool characterized by comprising:   2. The split pin according to claim 1, wherein the protrusion is configured to be movable by 30 ° in a direction in which the pair of pins are separated from each other from a state in which the split pin is inserted into the jaw pin. Tools.   3. The split pin tool according to claim 1, wherein a concave portion corresponding to a shape of a head portion of the jaw pin is formed in the head support portion. The split pin split portion is configured to be movable in the extending direction of the pin in a state where the split pin is inserted into the jaw pin,
The split pin tool according to any one of claims 1 to 3, wherein tips of split pins having different lengths of the pair of pins are configured to be movable in directions away from each other.   The pair of pins of the split pin used for preventing the jaw pins from falling off at the connecting portion of the turning machine are configured to be movable in directions away from each other. The split pin tool according to any one of the above.

Images