JP2021109482A - Railroad crossing gate and installation method of crossing gate bar - Google Patents

Abstract

To provide a method by which attaching/detaching a refraction type crossing gate bar to/from a railroad crossing gate is made to be easier.SOLUTION: In a weightless type railroad crossing gate 60, a contacting tool attaching and detaching part 66 with which a contacting tool 30 is attachable to and detachable from a housing body 41 that includes a motor axially rotating a main shaft 42 and an auxiliary spring 52 is provided. A refraction type crossing gate bar 20 can be attached, in a sidewise laid state, to a crossing gate bar holding mechanism 44 so as to facilitate work by attaching a transient replacement bar (21a) to the crossing gate bar holding mechanism 44 energized by the auxiliary spring 52 toward a crossing gate bar elevation side and operating the transient replacement bar to force the crossing gate bar holding mechanism 44 to move toward a crossing gate bar lowering side, and then, attaching the contacting tool 30 to the contacting tool attaching and detaching part 66 so as to regulate rotation of the crossing gate bar holding mechanism 44 toward the elevation side, and in this state, detaching the transient replacement bar (21a) and attaching the refraction type crossing gate bar 20.SELECTED DRAWING: Figure 1

Description

The present invention relates to a railroad crossing cutting machine and a method for attaching a railroad crossing rod suitable for equipping a refraction type cutting rod, and more particularly to a railroad crossing cutting machine and a method for attaching a railroad crossing rod which are improved so that the work of attaching the refraction type cutting rod can be easily performed.

The railroad crossing cut-off machine holds the cut-off rod in a cantilevered state and swings it by about 90 °. Most of them are vertical and vertical.
In addition, a simple rod-shaped straight rod type railroad crossing bar is often used as the railroad crossing bar equipped with such a railroad crossing barge, but when the railroad crossing road is wide, it bends and stretches as it goes up and down. A refraction type railroad crossing rod may be used (see, for example, Non-Patent Document 1).

Furthermore, regarding the basic configuration of the railroad crossing cutoff machine, it is necessary to lower the cutoff rod by its own weight for safety when the motor cannot operate such as during a power outage. The easy "weight type" was often adopted (see, for example, Non-Patent Document 1). In this type of railroad crossing cutoff machine, the cutoff rod and weight are separated on both sides of the main shaft and are exteriorized by the cutoff rod holding mechanism (bar holder), and the position adjustment range of the weight is wide, so the cutoff rod to be attached and detached is a straight rod type. Regardless of whether it is a railroad crossing rod or a refraction type railroad crossing rod, by adjusting the weight in advance, the railroad crossing rod holding mechanism is set to the posture when the railroad crossing rod is lowered, so that it is easy to work and the safety is high. A railroad crossing rod can be attached to and detached from the rod holding mechanism.

On the other hand, in recent years, by utilizing the miniaturization and performance improvement of the motor, for example, by adopting a servomotor capable of stable operation from low torque to high torque for the internal motor (see, for example, Patent Documents 1 to 5). ), The number of "waitless type" railroad crossing breakers that eliminate the need for heavy weight exteriors is increasing. In this type of crossing breaker, the weight type balancer on the exterior is omitted, and instead, the ball screw mechanism on the interior (see, for example, Patent Document 1) and the lower limit stopper and the upper limit stopper on the interior (for example, Patent Documents 2 to 4) are omitted. (See), an interior counterbalance spring and a swing member (see, for example, Patent Document 5) and the like have been introduced.

The lower limit stopper prevents the excessive descent of the cutting rod but does not regulate the rise of the cutting rod, and the upper limit stopper prevents the excessive descent of the cutting rod but does not regulate the descent of the cutting rod.
Even in such a waitress type railroad crossing breaker, when attaching and detaching the cutoff rod, the cutoff rod holding mechanism is set to the posture when the cutoff rod is lowered in advance as in the case of the weight type described above, but the method of using it is the straight rod type. Part of the railroad crossing rod and the refraction type railroad crossing rod are different.
The work of attaching these cutting rods will be described together with the basic structure of the railroad crossing cutting machine, which is a prerequisite.

The railroad crossing cutoff machine 40 that raises and lowers the straight rod type cut-off rod 10 (see FIGS. It is provided with a spindle 42 mounted on the housing 41 in a horizontal state, and a railroad crossing holding mechanism 44 mounted on a protruding end of the spindle 42 and capable of gripping the base of a straight rod type railroad crossing rod 10.
Then, the spindle 42 rotates bidirectionally by about 90 ° by the motor drive, so that the shear rod holding mechanism 44 rotates bidirectionally with the position of the axis of the protruding end of the spindle 42 as the rotation center 43, and this shearing occurs. The straight rod type shear cutting rod 10 cantilevered by the rod holding mechanism 44 swings and moves up and down on one side of the rotation center 43.

In such a waitress type railroad crossing breaker 40, the center of rotation 43 is deviated from the center of gravity of the breaking rod holding mechanism 44 (see FIG. 5), and the breaking rod holding mechanism 44 holds the straight rod type breaking rod 10. In this case, the weight of the straight rod type railroad crossing rod 10 causes most of the railroad crossing rod holding mechanism 44 to come below the center of rotation 43 (see FIG. 5D). Although not shown in the figure, when the shearing rod holding mechanism 44 does not hold the straight rod type shearing rod 10, the shearing rod holding mechanism 44 does not come below the rotation center 43 in the free state. The cutting rod holding mechanism 44 can be moved below the rotation center 43 relatively easily by human power.
Therefore, the work of attaching / detaching the straight rod type shear cutting rod 10 to / from the shearing rod holding mechanism 44 is naturally performed with the straight rod type shear cutting rod 10 turned sideways (see FIG. 5D).

Further, a contact tool attachment / detachment portion 46 (first contact tool attachment / detachment portion) is provided near the cutting rod holding mechanism 44 on the side surface of the housing 41 (see FIG. 5D). A typical example of the abutting tool attachment / detachment portion 46 is a female screw. Then, when the male screw at the end of the contact tool 30 (temporary holding metal fitting) is screwed into the contact tool attachment / detachment portion 46, the rod-shaped contact tool 30 is mounted in an upright state in front of the housing 41. (See FIGS. 5 (a) to 5 (c)).
Such attachment of the contact tool 30 is temporarily performed when it is desired to hold the straight rod type shearing rod 10 in the raised position, and in that state, when the shearing rod holding mechanism 44 is rotated clockwise, the contacting tool 30 is attached. The first contact portion 44a of the breaking rod holding mechanism 44 comes into contact with the contact tool 30, and the clockwise rotation of the breaking rod holding mechanism 44 and thus the lowering of the straight rod type breaking rod 10 is temporarily restricted.

On the other hand (see FIG. 6), the refraction type cutting rod 20 includes a root rod 21, a tip rod 22, a refraction joint 23, and a wire rope 24 (traction portion), and the root rod 21 and the tip rod 22 are provided. Although it bends at the refraction joint 23, since the wire rope 24 is connected to the refraction joint 23 and the housing 41, even when the root rod 21 is raised and is vertical (FIGS. 6 (a), (Fig. 6), b)), when the root rod 21 is lowered and lying down (see FIG. 6 (c)), and when it is being moved up and down and is slanted (not shown), the tip rod 22 is almost horizontal. It is designed to maintain a good condition.

Therefore, the railroad crossing cutoff machine 50 that raises and lowers the refraction type cutoff rod 20 in a waitless type (see FIG. 6) is a railroad crossing cutoff machine 40 in addition to many members 42, 43, 44, 44a, as well as the contact tool attachment / detachment portion 46. Although it can be shared, it is provided with a mooring portion 51 (stay) and an auxiliary spring 52, which are not found in the railroad crossing cutoff machine 40. Therefore, the housing 41 is often large, but since there is no inconvenience in the following description, the same reference numeral "41" is attached in the drawings.
Of these, the mooring portion 51 is for connecting one end of the wire rope 24 to the housing 41, so relatively small parts such as pins and bolts are sufficient. Therefore, even if the railroad crossing cutoff machine 40 has the mooring portion 51, it is not used and there is no inconvenience in the existence itself.

On the other hand, in the auxiliary spring 52 (see FIG. 6), a relatively large rotational moment generated by the tip rod 22 which is always lying as described above causes the breaking rod holding mechanism 44 to rotate clockwise. This is for keeping the peak of the motor load low by offsetting the above, and is not provided in the railroad crossing cutoff machine 40 that raises and lowers the straight rod type cutoff rod 10. Further, the auxiliary spring 52 is built in the housing 41 and cannot be adjusted at the time of installation in order to improve workability at the delivery destination or the installation destination.

Then, when the auxiliary spring 52 is mounted and the refraction type shearing rod 20 is attached to the shearing rod holding mechanism 44 and the refracting type shearing rod 20 is raised to stop the motor drive (FIGS. 6A and 6B). )), The fact that the refraction type cutting rod 20 descends in a certain time (see FIG. 6C) is prioritized from the viewpoint of ensuring safety in the event of a power failure.
Therefore, when the motor is stopped with the refraction type breaking rod 20 removed from the breaking rod holding mechanism 44, the breaking rod holding mechanism 44 rotates clockwise on the lowering side of the breaking rod by the rotational moment of its own weight. It cannot be adjusted by the auxiliary spring 52.

Therefore, when the refraction type railroad crossing rod 20 is attached to the waitress type railroad crossing cutting machine 50, it is difficult to hold the base rod 21 vertically while the refraction type railroad crossing rod 20 is assembled, and the installation work is also required. Since it is difficult, first, the tip rod 22 is removed from the refraction type railroad crossing rod 20, and a partial set of the root rod 21, the refraction joint 23, and the wire rope 24 is attached to the housing 41. At that time, the wire rope 24 is connected to the mooring portion 51, the root rod 21 is turned vertically and attached to the cutting rod holding mechanism 44, and then the root rod 21 is manually swiveled by an operator to bring the root rod 21 into a horizontal state. A series of operations are performed, such as lowering the rope to the position where it is maintained, and further, another worker attaches one end of the tip rod 22 held sideways to the refraction joint 23.

Japanese Unexamined Patent Publication No. 2005-112151 Japanese Unexamined Patent Publication No. 2006-06933 Japanese Unexamined Patent Publication No. 1012-166578 Japanese Unexamined Patent Publication No. 2014-091418 Japanese Unexamined Patent Publication No. 2018-043538

Introduction to Electricity for Railway Engineers Signal Series 8 "Railroad Crossing Security Device" Japan Railway Electrical Technology Association October 30, 1997, 4th edition published p. 24-31

As described above, when the refraction type cutting rod 20 is attached to the railroad crossing cutting machine 50, the tip rod 22 is removed from the refraction type cutting rod 20, the root rod 21 and the wire rope 24 are attached, and the root rod 21 is swiveled and lowered. And the tip rod 22 is attached to the refraction type railroad crossing rod 20.
However, the work of attaching the refraction type cutoff rod 20 to the railroad crossing cutoff machine 50 is not as troublesome as the work of attaching and detaching the auxiliary spring 52 built in the housing 41, but the direct rod type to the railroad crossing cutoff machine 40. Compared with the installation work of the railroad crossing rod 10, the procedure is complicated and troublesome, and the workability is not good because the assembling of the refracting railroad crossing rod 20 and the mooring of the wire rope 24 are performed while suppressing the jumping up of the root rod 21.
Therefore, it is a technical issue to improve the railroad crossing cutoff machine and the method of attaching the cutoff rod so that the work of attaching and detaching the refraction type cutoff rod to the railroad crossing cutoff machine can be easily performed.

The railroad crossing breaker of the present invention (Solution 1) was devised to solve such a technical problem.
A housing containing a motor and an auxiliary spring for rotating the spindle, a shearing rod holding mechanism externally attached to the housing via the spindle, and a traction portion of a refractory cutting rod attached to the shearing rod holding mechanism. In a waitress type railroad crossing breaker equipped with a mooring part (stay) for fastening (wire rope)
A contact tool attachment / detachment portion for attaching / detaching the attachment / detachment portion of the abutting tool in which the abutting portion and the attachment / detachment portion are formed is provided on the outer surface of the housing, and the rotational state of the breaking rod holding mechanism is refracted. When the attachment / detachment portion is attached to the contact tool attachment / detachment portion after being forced to the lowering position of the type breaking rod, the movement of the bending rod holding mechanism rotating from the lowering position of the refraction type cutting rod to the ascending side is the holding of the breaking rod. It is characterized in that it is regulated by the contact between the mechanism and the contact portion of the contact tool. The above-mentioned contact tool attachment / detachment portion is simply a contact tool attachment / detachment portion unless the contact tool attachment / detachment portion 46 described above exists separately as the first contact tool attachment / detachment portion. When the contact tool attachment / detachment portion 46 exists separately as the first contact tool attachment / detachment portion, it corresponds to the second contact tool attachment / detachment portion.

Further, the railroad crossing cutoff machine of the present invention (solution means 2) is the railroad crossing cutoff machine of the above-mentioned solution means 1.
When the rotating state of the breaking rod holding mechanism is forced to the ascending position of the refraction type breaking rod and then the attachment / detachment portion is attached to the abutting tool attachment / detachment portion, the breaking rod holding mechanism moves from the ascending position of the refraction type breaking rod. It is characterized in that the movement of rotating to the descending side is regulated by the contact between the refraction rod holding mechanism and the contact portion of the contact tool.
The contact tool attachment / detachment portion of the solution 2 is the contact tool attachment / detachment portion of the above-mentioned solution 1, and at the same time, corresponds to the contact tool attachment / detachment portion 46 described above. It does not exist separately from the 46, but corresponds to a shared attachment / detachment portion that also serves as the first contact attachment / detachment portion of the abutment tool attachment / detachment portion 46 described above and the second abutment tool attachment / detachment portion of the above-mentioned solution 1. ..

Further, the method of attaching the cutting rod of the present invention (solution 3) is a method of attaching the bending rod to the railroad crossing cutting machine of the solutions 1 and 2, wherein the refraction type cutting rod is attached.
When forcing the rotating state of the shearing rod holding mechanism to the descending position of the refracting type cutting rod, a one-time rod is used instead of the refracting type cutting rod, and after the attachment / detachment portion is attached to the contact tool attachment / detachment portion. It is characterized in that the rod for one era is removed and the refraction type cutting rod is attached.

In such a railroad crossing breaker of the present invention (solution 1), the contact tool attachment / detachment portion is provided on the outer surface of the housing to which the contact tool can be attached / detached, so that the contact tool is attached to the outer surface of the housing. Can be attached and detached. Moreover, in addition to that, regarding the relationship between the installation location of the contacting tool attachment / detachment part and the contacting part of the contacting tool, the contacting tool is attached after forcing the rotating state of the breaking rod holding mechanism to the lowering position of the breaking rod. Then, by imposing the condition that the ascending rotation of the breaking rod holding mechanism is restricted by the contact between the breaking rod holding mechanism and the contact tool, when the breaking rod holding mechanism is forced to the descending position, an external force such as human power is applied. Even if the contact tool is attached, the shearing rod holding mechanism maintains the lowered state even if there is no external force, so the tip rod is not removed from the refracting type cutting rod and is in the sideways posture in the assembled state. It can be attached to the refraction rod holding mechanism.

To remove the refraction type cutting rod, lower the refraction type cutting rod and then attach the contact tool to the housing. Since the rotation of the bending rod holding mechanism is restricted, remove the tip rod from the refraction type cutting rod. It can be removed from the refraction rod holding mechanism in a sideways posture while still assembled. After that, if the refraction type cutting rod is replaced with another one, the replacement work can be performed as it is. Further, the abutting tool can be easily removed by forcing the breaking rod holding mechanism to the lowered position or the like to relax the contact state between the breaking rod holding mechanism and the abutting tool.
Therefore, according to the present invention, it is possible to realize a railroad crossing cutoff machine in which the work of attaching and detaching the refraction type cutoff rod to and from the railroad crossing cutoff machine can be easily performed.

Further, in the railroad crossing cutoff machine of the present invention (solution 2), the rotation restriction of the cutoff rod holding mechanism by attaching one contacting tool to the contacting tool attachment / detachment portion rises from the descending position of the bending type breaking rod. By making it possible to rotate not only to the side but also to the lowering side of the refractory railroad crossing rod, one contact tool and one contact tool attachment / detachment part can be used to regulate bidirectional rotation. It will be possible to share.
Therefore, in the case of an existing railroad crossing cutoff machine that has already been provided with a contact tool attachment / detachment part in order to regulate the rotation of the refraction type cutoff rod from the ascending position to the descending side, no additional processing is applied to the housing. However, it can be done by additional machining to the refraction rod holding mechanism, which is easier than that.
Therefore, it is possible to realize a railroad crossing cutoff machine in which the work of attaching and detaching the refraction type cutoff rod to and from the railroad crossing cutoff machine can be easily performed.

Further, in the method of attaching the breaking rod of the present invention (solution 3), when the contacting tool is attached after forcing the rotating state of the breaking rod holding mechanism to the lowering position of the breaking rod, the contact with the breaking rod holding mechanism is made. For a crossing breaker whose ascending direction rotation of the breaking rod holding mechanism is restricted by contact with a tool, when the rotational state of the breaking rod holding mechanism is forced to the lowering position of the bending type breaking rod, it is bent. Instead of using the type cutting rod itself or its parts, instead of using a substitute rod that can be attached to the cutting rod holding mechanism instead of the root rod for a while, the root rod can be used alone. For this reason, it is not necessary to remove the tip rod from the refracting type cutting rod, and even if the external force for forcing the position is covered only by human power, the shape and material of the substitute rod should be suitable for the work. Therefore, the position forcing can be easily executed.

Regarding Example 1 of the present invention, the structure of the railroad crossing cutoff machine is shown, (a) is a front view of the railroad crossing cutoff machine, (b) is a side view of the abutment tool, and (c) is a railroad crossing cutoff machine and a contact tool. It is a right side view. A method of attaching a railroad crossing rod according to a railroad crossing cutoff machine is shown, and all of (a) to (c) are front views of the railroad crossing cutoff machine. A method of attaching a railroad crossing rod according to a railroad crossing cutoff machine is shown, and all of (a) to (b) are front views of the railroad crossing cutoff machine and the railroad crossing rod. Regarding the second embodiment of the present invention, the structure of the railroad crossing cutoff machine and the method of attaching the railroad crossing rod to the railroad crossing cutoff machine are shown. c) and (d) are front views of the railroad crossing breaker. The structure related to the conventional railroad crossing cutoff machine and the method of attaching the railroad crossing rod are shown. The front view, (d) is the front view of the railroad crossing breaker. A conventional railroad crossing breaker equipped with a refraction type railroad crossing rod is shown, (a) is a front view, and (b) to (c) are front views.

A specific mode for carrying out such a railroad crossing cutoff machine and a cutoff rod attachment method of the present invention will be described with reference to Examples 1 and 2 below.
The first embodiment shown in FIGS. 1 to 3 embodies the above-mentioned solutions 1 and 3 (claims 1 and 3 at the time of filing), and the second embodiment shown in FIG. 4 is the above-mentioned solution. It embodies means 2 and 3 (claims 2 and 3 at the time of filing).

In addition, in the illustration thereof, for the sake of simplicity and the like, the description of the invention will be omitted by omitting the illustration of the drive source such as an electric motor, the electric circuit such as a motor driver, and the built-in housing such as an electronic circuit such as a controller. The items necessary for and related to the above are mainly shown.
Further, in the illustration thereof, the same components as those in the conventional case are designated by the same reference numerals. Therefore, the duplicated explanation will be omitted, and the differences from the conventional ones will be mainly described below.

The specific configuration of the first embodiment of the railroad crossing cutoff machine and the cutoff rod attachment method of the present invention will be described with reference to the drawings. 1A is a front view of the railroad crossing cutoff machine 60, FIG. 1B is a side view of the abutment tool 30, and FIG. 1C is a right side view of the railroad crossing cutoff machine 60 and the abutting tool 30.

This railroad crossing cutoff machine 60 is different from the above-mentioned railroad crossing cutoff machine 50 in that the contact tool attachment / detachment portion 66 (second hit) similar to the above-mentioned contact tool attachment / detachment portion 46 (first contact tool attachment / detachment portion). The contact tool attachment / detachment portion) is provided on the outer surface of the housing 41 at a position slightly separated from the contact tool attachment / detachment portion 46 (see FIG. 1A).
The abutting tool attachment / detachment portion 66 is also formed of the same female screw as the abutting tool attachment / detachment portion 46 (see FIG. 1A), and is the same as the abutting tool attachment / detachment portion 46 (see FIGS. 1B and 1C). ), When the attachment / detachment portion 32 at the end of the abutting tool 30 is screwed into the abutting tool attachment / detachment portion 66, the rod-shaped abutting portion 31 of the abutting tool 30 is mounted in an upright state in front of the housing 41. It has become so.

The position of the abutting tool attachment / detachment portion 66 on the front surface of the housing 41 (see FIGS. On the premise that it acts on the holding mechanism 44, it is selected from the parts where the reaction force against the urging force can be exerted on the abutting tool 30. As described above, the urging force is generated due to the repulsive force of the auxiliary spring 52, is transmitted to the shearing rod holding mechanism 44 via the main shaft 42, and the refracting type shearing rod 20 is transmitted to the shearing rod holding mechanism 44. If it is not attached, the bending rod holding mechanism 44 tries to rotate from the descending position of the refracting cutting rod 20 to the ascending side.

Therefore, when the shearing rod holding mechanism 44 is in the rotating state when the refraction type cutting rod 20 is lowered, the contacting tool 30 is attached to the contacting tool attachment / detachment portion 66, and then the shearing rod holding mechanism 44 When the restraint is released, the second contact portion 44b of the breaking rod holding mechanism 44 is brought into contact with the contact portion 31 of the contact tool 30 by the above-mentioned urging force. Due to the reaction force generated by the contact with the tool 30, the movement of rotating the shearing rod holding mechanism 44 from the descending position to the ascending side of the refracting cutting rod 20 is regulated.

A method of attaching the refraction type cutting rod 20 to the railroad crossing cutting machine 60 of the first embodiment will be described with reference to the drawings. 2 (a), (b), and (c) and 3 (a) and 3 (b) are all front views of the railroad crossing cutoff machine 60.

In the railroad crossing breaker 60 to which the refraction type breaking rod 20 is not attached (see FIG. 2A), the moment due to the urging force of the auxiliary spring 52 exceeds the moment due to the weight of the breaking rod holding mechanism 44 with respect to the rotational moment of the rotation center 43. Therefore, the rotational state of the shearing rod holding mechanism 44 is substantially in the ascending position of the refracting type breaking rod 20.
In this state (see FIG. 2A), it is difficult to attach the refraction type cutting rod 20. Therefore, first, in order to change the rotational state of the cutting rod holding mechanism 44, the 1st generation rod 21a is attached to the cutting rod holding mechanism 44. Install (see FIG. 2B). The one-era rod 21a may be a simple round rod as long as one end thereof can be attached to the cutting rod holding mechanism 44.

The work of attaching the 1st era rod 21a to the breaking rod holding mechanism 44 (see FIG. 2B) is to make the 1st era rod 21a vertical and to hold the lower end of the 1st era rod 21a by the breaking rod holding mechanism 44. However, since the rod 21a for one era is lighter than the refracting type cutting rod 20 without the tip rod 22 and has a simple shape, it is easy to make it vertical, and even if it is vertical, the refracting type cutting without the tip rod 22 Since it is much more stable than the rod 20, the work of attaching the 1st generation rod 21a to the cutting rod holding mechanism 44 can be easily and safely carried out.

After installing the 1st era rod 21a, lower the 1st era rod 21a until it is almost horizontal by turning the 1st era rod 21a manually by the operator, and then the contact tool. The attachment / detachment portion 32 of 30 is screwed into the abutting tool attachment / detachment portion 66 of the housing 41 to attach the abutting tool 30 to the housing 41 (see FIG. 2C). Then, when the operator separates from the rod 21a for the first era, the shearing rod holding mechanism 44 rotates slightly from the descending position of the refracting type shearing rod 20 to the ascending side, but immediately the second contact portion of the shearing rod holding mechanism 44. Since 44b abuts on the abutting portion 31 of the abutting tool 30 and the abutting regulates the further rotational movement of the breaking rod holding mechanism 44 and stops, the breaking rod holding mechanism 44 makes the rod 21a for one era substantially horizontal. Continue to maintain the posture and rotation state to be held.

In that state (see FIG. 2C), the substitute rod 21a for temporary use is removed from the cutting rod holding mechanism 44, but since the rod 21a for one era is turned sideways, the removal work can be easily performed.
Then (see FIG. 3A), the refraction type breaking rod 20 is attached to the breaking rod holding mechanism 44, but since the rotating state of the breaking rod holding mechanism 44 is on the descending side, the attachment work is naturally performed. It is performed sideways in an assembled state without removing the tip rod 22 from the refraction type cutting rod 20.

Then (see FIG. 3B), the free end of the root rod 21 of the refraction type shearing rod 20 is attached to the shearing rod holding mechanism 44, and the free end of the wire rope 24 (traction portion) of the refracting type shearing rod 20 is moored. When attached to the portion 51 (mooring portion), the rotational moment on the descending side due to the weight of the refracting cutting rod 20 slightly exceeds the rotational moment on the ascending side due to the force of the auxiliary spring 52, so that the refracting cutting rod 20 is slightly lowered. After that, the contact tool 30 is stopped at the lower limit position, and the contact state between the contact tool 30 and the cutting rod holding mechanism 44 is loosened. Therefore, the contact tool 30 can be easily removed from the contact tool attachment / detachment portion 66 of the housing 41 (FIG. 3 (b)).

In this way, in the railroad crossing cutting machine 60, the refraction type cutting rod 21a is attached to and detached from the cutting rod holding mechanism 44, and the abutting tool 30 is attached to and detached from the abutting tool attachment / detachment portion 66. 20 can be easily attached in a sideways state without disassembling.
When removing the refraction type cutting rod 20 from the railroad crossing cutting machine 60, the work may be performed in the reverse order of the above-mentioned installation work procedure, and a complicated explanation to be repeated is omitted, but the refraction type cutting rod 20 is still used. The tip rod 22 can be easily removed in a sideways state without being removed.

The specific configuration of the second embodiment of the railroad crossing breaker of the present invention will be described with reference to the drawings. 4A and 4B are a front view of the railroad crossing cutoff machine 70, (b) an enlarged front view of the railroad crossing rod holding mechanism 74, and (c) and (d) are front views of the railroad crossing cutoff machine 70.

The railroad crossing cutoff machine 70 differs from the railroad crossing cutoff machine 60 of the first embodiment described above (see FIGS. 4A and 4B) in that the contact tool attachment / detachment portion 66 is eliminated from the housing 41. The point is that the railroad crossing rod holding mechanism 74 is introduced in place of the railroad crossing rod holding mechanism 44.
However, the contact tool attachment / detachment portion 46, which is the attachment / detachment destination of the contact tool 30, is provided at the same portion of the housing 41 (see FIGS. 4A and 4B), and the first contact tool attachment / detachment portion 46 is provided. It is a common attachment / detachment part that also serves as a attachment / detachment part for the second contact tool.
Then, when the contact tool 30 is attached to the contact tool attachment / detachment portion 46 (shared attachment / detachment portion) when the rotation state of the shearing rod holding mechanism 74 is in the raised position of the refraction type breaking rod 20 (FIG. 4 (c)). (See), the first contact portion 44a of the refraction rod holding mechanism 74 comes into contact with the contact tool 30, and the lowering of the refraction rod holding mechanism 74 is restricted.

The breaking rod holding mechanism 74 differs from the above-mentioned breaking rod holding mechanism 44 in that a second contact portion 75 is formed in a part of the breaking rod holding mechanism 74 (see FIG. 4B). ..
Then, when the rotating state of the shearing rod holding mechanism 74 is forced to the lowered position of the refraction type cutting rod 20 and then the contacting tool 30 is attached to the contacting tool attachment / detachment portion 46 (shared attachment / detachment portion) (see FIG. 4D). ), When the second contact portion 75 of the breaking rod holding mechanism 74 comes into contact with the contact tool 30, the breaking rod holding mechanism 74 of the refracting cutting rod 20 (the rod 21a for one era in FIG. 4D) The movement of rotation from the descending position to the ascending side is regulated.

The method of attaching the refraction cutting rod 20 to the railroad crossing cutting machine 70 is different from the method of attaching the contacting tool 30 to the contacting tool attaching / detaching portion 46 instead of the contacting tool attaching / detaching portion 66. Since the work of attaching the refraction type cutting rod 20 to the railroad crossing cutting machine 60 may be the same as described above, a complicated and complicated detailed explanation will be omitted (see FIG. 4 (d)), but the rod 21a for one era is cut off. By attaching / detaching to / from the rod holding mechanism 44 and attaching / detaching the contact tool 30 to / from the contact tool attachment / detachment portion 46, the tip rod 22 can be easily attached to the refracting type cutting rod 20 in a sideways state without being removed.
The refraction type cutting rod 20 can be easily removed from the railroad crossing cutting machine 60 by reversing the work in a state where the refraction type cutting rod 20 is turned sideways without being disassembled.

[others]
In the above embodiment, a simple contacting tool 30 in which the contacting portion 31 is close to a straight rod is shown, but the rotational force of the breaking rod holding mechanism 44 by the auxiliary spring 52 is rotated by the own weight of the breaking rod holding mechanism 44. Since it is larger than the force, in order to prevent and easily prevent an undesired situation in which the contact tool 30 bends in a narrow portion of the boundary between the contact portion 31 and the attachment / detachment portion 32, among the contact portions 31 It is preferable to form a large diameter portion in the shape of a brim at the end near the detachable portion 32. The thickness of the large diameter portion should be thin enough to avoid interference with the cutting rod holding mechanism 44.
Further, in the first and second embodiments, the positions of the contact tool attachment / detachment portions 46 in the housing 41 are the same, but the positions do not have to be the same and may be different.

10 ... Straight rod type cutting rod (shaking rod), 20 ... Refractive type cutting rod (shaking rod),
21 ... Root rod, 21a ... One-era stick, 22 ... Tip rod,
23 ... Refractive joint, 24 ... Wire rope (traction part),
30 ... Contact tool (temporary holding bracket), 31 ... Contact part, 32 ... Detachable part,
40 ... Railroad crossing breaker, 41 ... Housing, 42 ... Spindle, 43 ... Center of rotation (axis center end),
44 ... Cutting rod holding mechanism (bar holder), 44a ... First contact portion,
44b ... Second contact part, 46 ... Contact tool attachment / detachment part (first contact tool attachment / detachment part, common attachment / detachment part),
50 ... Railroad crossing breaker, 51 ... Mooring part (stay), 52 ... Auxiliary spring,
60 ... Railroad crossing breaker, 66 ... Contact tool attachment / detachment part (second contact tool attachment / detachment part),
70 ... Railroad crossing cutoff machine, 74 ... Cutoff rod holding mechanism (bar holder), 75 ... Second contact part

Claims (3)

A housing containing a motor and an auxiliary spring responsible for shaft rotation of the spindle, a railroad crossing rod holding mechanism externally attached to the housing via the spindle, and a traction portion of a refraction type railroad crossing rod attached to the railroad crossing rod holding mechanism. In a waitress-type railroad crossing breaker equipped with a mooring part for mooring
A contact tool attachment / detachment portion for attaching / detaching the attachment / detachment portion of the abutting tool in which the abutting portion and the attachment / detachment portion are formed is provided on the outer surface of the housing, and the rotational state of the railroad crossing rod holding mechanism is refracted. When the attachment / detachment portion is attached to the contact tool attachment / detachment portion after being forced to the lowering position of the type breaking rod, the movement of the bending rod holding mechanism rotating from the lowering position of the refraction type breaking rod to the ascending side is the holding of the breaking rod. A railroad crossing breaker, characterized in that it is regulated by contact between the mechanism and the contact portion of the contact tool. When the rotating state of the breaking rod holding mechanism is forced to the ascending position of the refraction type breaking rod and then the attachment / detachment portion is attached to the abutting tool attachment / detachment portion, the breaking rod holding mechanism moves from the ascending position of the refraction type breaking rod. The railroad crossing cutoff machine according to claim 1, wherein the movement of rotating to the descending side is regulated by the contact between the cutoff rod holding mechanism and the contact portion of the contact tool. A method for attaching a refracting rod to a railroad crossing cutting machine according to any one of claims 1 and 2.
When forcing the rotating state of the shearing rod holding mechanism to the descending position of the refracting type cutting rod, a one-time rod is used instead of the refracting type cutting rod, and after the attachment / detachment portion is attached to the contact tool attachment / detachment portion. A method for attaching a shearing rod, which comprises removing the rod for one era and attaching the refracting type cutting rod.

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