JP2014136925A - Insertion-type pull-out tool for electric snow-melting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insertion-type pull-out tool for an electric snow-melting apparatus, which is simple in structure and can be easily pulled out without damaging the electric snow-melting apparatus.SOLUTION: A pull-out tool 1 for an electric snow-melting apparatus is held by a cross holding part 6 in a state that an operation part 2 and a support fitting 4 cross with each other. The support fitting 4 is rotatable with respect to the cross holding part 6 within a predetermined range. The operation part 2 is configured by a handle bar 2a in its upper part and a tip fitting 2b in its lower part. The tip fitting 2b is formed in a biforked shape. A substantially U-shaped rail holding part 4a capable of holding a rail lateral side is formed at one end of the support fitting 4. A plurality of adjustment through-holes 4b are formed along the longitudinal direction in the support fitting 4. The adjustment through-holes 4b are penetrated by a penetrating pin (not shown) provided at a tip of a length adjustment knob 6b and supported in a rotatable manner. The height of the support fitting 4 with respect to the operation part 2 can be adjusted by loosening a height adjustment knob 6a.

Description

  The present invention relates to a plug-in type extraction tool for an electric snow melter installed under a rail of a railway.

  In railways where there is a lot of snowfall, snow accumulation and freezing on the rails become a problem. In particular, the problem is serious because the trajectory cannot be switched when the branching device is frozen.

  For this reason, various methods for heating the rail are conventionally used. Of these, electric snow melters are superior in terms of operability as compared to snow melting means using a canter or a burner.

  FIG. 8 shows an installation state of the conventional electric snow melter 102. In FIG. 8, an electric snow melter 102 disposed along the sleeper 101 on the lower side of the rail 100 and an electric snow melter 103 disposed along the side surface of the rail 100 are shown. When such electric snow melters 102 and 103 are installed in a branching device, it is possible to easily perform snow melting or freezing prevention operations by electric control. As for the electric snow melter of FIG.

Japanese Utility Model Publication No. 5-030203

  However, of the electric snow melters 102 and 103 as described above, the electric snow melter 102 extending below the rail 100 is fixed to the sleepers 101 and the like due to long-term use, and from below the rail during maintenance and inspection. It may be difficult to pull out.

  In such a case, when the heating element 102b is pulled out from under the rail 100 by grasping the terminal portion 102a connected to the lead wire 104, the heating element 102b is damaged if a strong force is applied in an unreasonable direction. There is a fear.

  Therefore, an object of the present invention is to provide an electric snow melter insertion type extraction tool that can be easily extracted with a simple configuration without damaging the electric snow melter.

  In order to achieve the above object, an electric snowmelter insertion-type extraction tool of the present invention is a tool for extracting an electric snowmelter for a rail composed of a rod-shaped heating element and a terminal portion having a diameter larger than that of the heating element. Support handle provided with a handle portion on the upper side and a contact portion provided with a contact portion capable of contacting the terminal portion on the lower side, and a rail holding portion for rotatably holding the upper plate portion of the rail at one end A metal fitting, an operation rod and a support fitting are arranged in an intersecting manner and are relatively pivotably held, and have an operation rod adjusting portion for adjusting the intersection position of the operation rod and a support fitting adjusting portion for adjusting the intersection position of the support fitting. And an intersection holding part.

  In addition to the above configuration, the electric snow melter insertion type pulling tool according to the present invention has an adjustment knob that allows the operating rod adjusting portion to move forward and backward toward the side surface of the operating rod by rotating operation and press and fix the operating rod by advancement. It is characterized by having.

  In addition to the above-described configuration, the electric snow melter insertion-type extraction tool of the present invention has a plurality of adjustment through-holes formed along the longitudinal direction of the support fitting, and the support fitting adjustment portion includes the adjustment through-holes. Any one of them is provided with a penetrating pin that can be penetratingly arranged.

  In addition to the above-described configuration, the electric snow melter insertion-type extraction tool of the present invention is characterized in that the rail holding portion is opened in a substantially U shape so as to be engageable to the side of the upper plate of the rail. And

  As described above, according to the present invention, the height of the support fitting can be adjusted to the height of the rail by adjusting the operating rod adjusting portion. Moreover, the support metal fitting can be brought into contact with the side of the rail by adjusting the support metal adjusting part, and the rail can be held by the rail holding part. Furthermore, when the operating rod arranged so as to be rotatable relative to the support bracket is rotated to the rail side, the lower contact portion in contact with the terminal portion can be rotated in a direction away from the rail. When the abutting portion rotates in a direction away from the rail, the rail holding portion rotatably holds the upper plate portion of the rail, so that the support bracket rotates downward about the rail holding portion.

  Thus, as the electric snow melter is pushed out by the contact portion, the support fitting rotates downward about the rail holding portion, so that the contact portion moves away from the rail along a substantially horizontal track. Thereby, since the force of a bending direction is not added with respect to an electric snowmelter from a contact part, damage to an electric snowmelter can be prevented.

  Further, according to the present invention, the operating rod can be moved relative to the cross holding portion with the adjusting knob retracted from the operating rod, and the operating rod can be moved toward the operating rod while the adjusting knob is advanced toward the operating rod. It is pressed and fixed to the cross holding part.

  Thus, like the pressing mechanism of the adjusting knob, the position of the cross holding portion in the longitudinal direction of the operating rod can be easily adjusted with a simple configuration, and the operability is excellent.

  Further, according to the present invention, when the through hole for adjustment of the support metal is selectively passed through the through pin, the swing center of the support metal can be easily changed.

  Thus, the distance between the rail and the operating rod can be adjusted with a simple configuration.

  In addition, according to the present invention, since the rail holding portion is formed in a substantially U shape, it can be engaged with and held by the rail by being moved substantially horizontally from the side toward the rail.

  Thus, since the rail can be held by the support metal fittings with an extremely simple configuration, the work efficiency is remarkably improved.

1 is an overall perspective view of an electric snow melter insertion-type extraction tool according to an embodiment of the present invention. FIG. 2 is a view showing a mechanism of a cross holding portion that adjusts the height of a support fitting with respect to an operation portion in the electric snow melting device of FIG. 1. FIG. 2 is a view showing a mechanism of a cross holding portion that adjusts a horizontal position of a support fitting in the electric snow melter drawing device of FIG. 1. FIG. 2 is a view showing a state of rotation with respect to an operation unit of a support metal fitting in the electric snow melter extraction device of FIG. 1. It is the figure which showed the state which installed the extraction apparatus of the electric snowmelter of FIG. 1 with respect to the rail and the electric snowmelter. It is explanatory drawing which showed the use condition of the extraction apparatus of the electric snowmelter of FIG. FIG. 7 is an enlarged view of the periphery of the support fitting and the tip fitting in the state of FIG. It is the figure which showed the installation state to the rail of the conventional electric snowmelter.

  An electric snowmelter insertion type pulling tool according to an embodiment of the present invention will be described with reference to the drawings. The same members / same configurations are denoted by the same reference numerals.

  First, FIG. 1 shows an overall perspective view of an extraction device 1 of an electric snow melter 102 (which will be described later with reference to FIG. 5) according to an embodiment of the present invention. In the drawing device 1, the operation unit 2 (operation rod) and the support fitting 4 are arranged to intersect each other. In the arrangement shown in FIG. 1, the operation unit 2 and the support fitting 4 are arranged substantially orthogonally. The operation unit 2 and the support fitting 4 are held in a crossed state by a substantially cubic crossing holding unit 6. The cross holding portion 6 is provided with a height adjustment knob 6a (operation rod adjustment portion) and a length adjustment knob 6b (support fitting adjustment portion). As will be described later, the operation portion 2 and the support fitting are provided. 4 can be adjusted.

  The support metal fitting 4 is configured by a pair of plate-like members facing each other. A substantially U-shaped rail holding portion 4 a that opens to the side is formed at one end of the support bracket 4. The rail holding portion 4a includes a placement contact portion 4c placed on the top surface of the rail, a side contact portion 4d that contacts the side surface of the rail, and a rail upper plate portion 100a (see FIG. 5 later). And a push-up preventing portion 4e that is in contact with the lower side.

  Next, the height adjustment mechanism of the support metal fitting 4 will be described with reference to FIG. In FIG. 2, the support fitting 4 before movement is shown by a solid line, and the support fitting 4 after movement is shown by a two-dot chain line. A height adjustment knob 6a (operation rod adjustment section) is provided on the side surface in the direction in which the support fitting 4 extends in the cross holding portion 6 that holds the support fitting 4 in an arrangement substantially orthogonal to the operation portion 2. ing. The height adjustment knob 6 a is a screw type, and is configured such that a tip (not shown) can come into contact with the side surface of the operation unit 2 when tightened.

  Since it is comprised in this way, it becomes possible to adjust the height of the support metal fitting 4 to the height of a rail easily by operating the height adjustment knob 6a.

  Next, the longitudinal position adjustment mechanism of the support bracket 4 will be described with reference to FIG. Each of the pair of support fittings 4 is formed with adjustment through holes 4b arranged in a line in the longitudinal direction. On the other hand, length adjustment knobs 6 b (support metal fitting adjustment portions) are respectively provided on two side surfaces of the cross holding portion 6 that are orthogonal to the longitudinal direction of the support metal fitting 4. A penetrating pin (not shown) is provided at the tip of the length adjusting knob 6b (in the cross holding portion 6). This penetration pin can selectively penetrate any of the adjustment through holes 4b by advancing and retracting the length adjustment knob 6b in a direction perpendicular to the support fitting 4. Thereby, the length extended in the rail direction of the support metal fitting 4 can be adjusted. Further, the penetration pin is the center of rotation of the support bracket 4 that rotates.

  With this configuration, the rail holding portion 4a can be abutted and held on the side surface of the rail by an easy operation independently of the height.

Next, the relative rotation mechanism of the support fitting 4 with respect to the operation unit 2 will be described with reference to FIG. In the cross holding portion 6, a rotation restricting recess 6 c is formed in a region where the support metal fitting 4 is disposed. This also appears in FIG. The rotation restricting recess 6c restricts the rotation range of the support metal fitting 4 within a range from a substantially horizontal position to an elevation angle of about 45 degrees with reference to the operation unit 2 arranged vertically. Within the restricted rotation range, the support fitting 4 is rotatable relative to the operation unit 2.

  Since it is configured in this manner, the handle bar 2a of the operation unit 2 can be rotated around the cross holding portion 6 in a state where the rail holding portion 4a of the support metal fitting 4 holds the rail. As a result, the tip metal fitting 2b (contact portion) below the operation portion 2 performs an arc motion. In the present embodiment, the tip fitting 2b is formed in a bifurcated fork shape, and can accommodate the heating element 102b of the electric snow melter 102 therebetween. That is, when the heating body 102b is accommodated between the tip fittings 2b and the handle bar 2a is rotated, the electric snow melter 102 can be smoothly pulled out by the tip fittings 2b that move in an arc.

  The installation state of such a drawing apparatus 1 is shown in FIG. As shown in FIG. 5, the rail holding portion 4 a of the support fitting 4 of the drawing device 1 holds the upper plate portion 100 a of the rail 100 from the side. In the present embodiment, a slight play is provided between the rail holding portion 4a and the rail 100 (upper plate portion 100a), and the support bracket 4 can be rotated around the upper plate portion 100a. It has become. Further, the tip metal fitting 2b provided below the operation unit 2 is disposed so as to accommodate the heating body 102b portion in the vicinity of the terminal unit 102a in the electric snow melter 102 inside. When the handle bar 2a above the operation unit 2 is tilted to the rail side in such a state, the end fitting 2b moves away from the rail 100, and the terminal portion 102a can be easily pulled out by the action of the lever. it can.

  Next, the installation procedure of the drawing apparatus 1 will be described with reference to FIG. In FIG. 6, the ballast (ground) is shown by hatching. In addition, underground portions such as sleepers 101 buried in the ballast are indicated by dotted lines.

  FIG. 6A shows a state in which the operation portion 2 is installed substantially vertically so that the tip metal fitting 2b (see FIG. 1) protrudes from the ballast. In this state, the position of each part has not been adjusted yet.

  FIG. 6B shows a state in which the support fitting 4 is matched to the height of the rail 100. The height of the support fitting 4 can be adjusted by operating the height adjustment knob 6a (see FIG. 2) on the side surface of the cross holding portion 6 as described with reference to FIG.

  FIG. 6C shows a state in which the support fitting 4 is disposed in contact with the side of the rail 100. In this state, as described with reference to FIG. 3, by operating the length adjustment knob 6b (see FIG. 3) arranged on the side surface of the cross holding portion 6, the support metal fitting 4 is extended to the rail 100 side. The rail holding portion 4a (see FIG. 1) can be formed by contacting the side of the rail 100.

  FIG. 6D shows a state in which the handle bar 2a arranged in the vertical direction is tilted toward the rail 100 side. By the tilting operation of the handle bar 2 a, the operation portion 2 is rotated relative to the support bracket 4 around the cross holding portion 6, and the lower end bracket 2 b is rotated away from the rail 100. As a result, the electric snow melter 102 is pulled out from the rail 100.

  When the amount of the electric snow melter 102 drawn out by the series of operations shown in FIGS. 6 (a) to 6 (d) is not sufficient, the operation unit 2 is pushed again in the vicinity of the terminal portion 102a, and FIG. 6 (a). The operation of (d) is repeated.

  Here, in order to explain the state of FIG. 6D in detail, the configuration around the support metal fitting 4 and the tip metal fitting 2b is enlarged and shown in FIG.

In FIG. 7, the operation unit 2 is tilted toward the rail 100, and the electric snow melter 10 is moved by the end fitting 2 b.
2 shows the state when 2 is pulled out. In FIG. 7, an alternate long and short dash line 8 indicates a horizontal position of the height of the rail 100. A one-dot chain line 9 indicates the center line of the support fitting 4. As can be seen from FIG. 7, when the tip metal fitting 2 b at the lower end pulls out the electric snow melter 102 from the rail 100, the operating unit 2 rotates with respect to the support metal 4 around the cross holding part 6, and at the same time, the support metal 4 rotates downward with a side surface contact portion 4d that contacts the rail 100 as a fulcrum. Thereby, the front-end | tip metal fitting 2b can move to the substantially horizontal (direction of the arrow 10) with respect to the ground. Further, since the tip metal fitting 2b is formed in a bifurcated fork shape, this vertical movement is not transmitted to the heating element 102b even when the tip metal fitting 2b is moved up and down due to the resistance of the ballast. . Therefore, the electric snow melter 102 can be pulled out smoothly along the longitudinal direction without receiving a force in the bending direction by the heating element 102b, and damage can be minimized.

  By the way, when the operation unit 2 is initially moved from the vertical direction to the rail 100 side, a force is applied to the rail 100 along the support bracket 4 in a substantially horizontal direction (a direction along the alternate long and short dash line 8). Since the rail holding portion 4a of the support metal fitting 4 of the pulling device 1 according to the present embodiment is provided with the placement contact portion 4c and the side contact portion 4d placed on the upper surface of the rail 100, The rail 100 can be stably held.

  On the other hand, in the state where the operation unit 2 is largely inclined toward the rail 100 side, the support fitting 4 is inclined downward as described above. At this time, the reaction force received from the electric snow melter 102 that is pulled out acts in a direction in which the rail 100 is pushed obliquely upward along the support fitting 4. In contrast, in the present embodiment, a push-up preventing portion 4e that protrudes below the rail holding portion 4a is provided. As a result, even when the rotation of the operation unit 2 is advanced, the rail holding unit 4a stably holds the side surface of the rail 100, so that the work can be performed safely.

  In the above embodiment, the configuration in which the tip metal fitting 2b is formed in a bifurcated fork shape is shown as an example, but other shapes may be used. For example, for an electric snow melter having a shape in which two heating elements extend from the terminal portion, a single tip portion that can be inserted between the two heating elements may be formed. Further, it may be formed in a fork shape extending between two heating bodies and three on both outer sides.

  Moreover, in the said embodiment, the example which comprised the rotation area of the support metal fitting 4 by the rotation control recessed part 6c in the range used as an elevation angle of 45 degree | times from substantially horizontal was shown. However, if the rail holding portion 4a is provided with the mounting contact portion 4c that is mounted on the upper surface of the rail 100, the horizontal posture of the support metal fitting 4 can be held. It may not be provided.

  Moreover, in the said embodiment, after adjusting the height of the support metal fitting 4 about the work procedure, the example which adjusts the horizontal direction position of the support metal fitting 4 was shown. However, these work procedures may be reversed.

  Moreover, in the said embodiment, the through-hole 4b for adjustment is formed in the support metal fitting 4, and the through-hole pin provided in the front-end | tip of the length adjustment knob 6b is penetrated with respect to this adjustment through-hole 4b, A support metal fitting The structure which supports 4 so that rotation is possible was shown as an example. However, any other configuration may be used as long as the support metal fitting 4 can be rotatably supported with respect to the cross holding portion 6 and the length to the rail can be adjusted. For example, a convex portion that can be engaged up to an intermediate depth position of the adjusting through hole 4b may be provided at the tip of the length adjusting knob 6b. Moreover, you may comprise not only the adjustment through-hole 4b in the support metal fitting 4 side, but forms a recessed part side by side in the longitudinal direction, and engages the said convex part selectively.

Moreover, in the said embodiment, although the rail holding part 4a formed in the end of the support metal fitting 4 showed as an example the structure opened to the rail 100 side and was formed in the substantially U shape, it is not restricted to this, A rail Other configurations may be used as long as the upper plate portion 100a of the 100 can be rotatably held. For example, the placement contact portion 4c may protrude longer than the push-up prevention portion 4e, and may be formed asymmetrically in the vertical direction. If comprised in this way, even if it is a case where the pressing force which is acting with respect to the rail 100 from the support metal fitting 4 loses | releases during operation | work, since the drop-off of the support metal fitting 4 can be prevented, safety improves. .

1 Pulling device (electric snow melter insertion type pulling tool)
2 Operation part (operation 杆)
2a Handlebar (handle)
2b Tip fitting (contact part)
4 Support metal fitting 4a Rail holding part 4b Adjusting through hole 4c Placement contact part 4d Side contact part 4e Push-up prevention part 6 Crossing holding part 6a Height adjustment knob (operating rod adjustment part)
6b Length adjustment knob (support bracket adjustment part)
6c Rotation restriction recess 100 Rail 100a Upper plate (upper rail of rail)
101 sleepers 102, 103 electric snow melting device 102a terminal portion 102b heating element 104 lead wire

Claims (4)

A tool for pulling out an electric snow melting device for a rail composed of a rod-shaped heating element and a terminal portion having a diameter larger than that of the heating element,
An operating rod provided with a handle portion on the upper side and a contact portion capable of contacting the terminal portion on the lower side;
A support fitting provided with a rail holding portion that rotatably holds the upper plate portion of the rail at one end;
An operating rod adjusting unit for adjusting the crossing position of the operating bracket, a supporting bracket adjusting unit for adjusting the crossing position of the supporting bracket, Having an intersection holding section,
An electric snowmelter insertion type extraction tool characterized by comprising:   2. The electric snow melter insertion device according to claim 1, wherein the operation rod adjusting unit has an adjustment knob capable of moving forward and backward toward a side surface of the operation rod by a rotation operation and capable of pressing and fixing the operation rod by advancement. Shape extraction tool. The support fitting is formed with a plurality of adjustment through holes along the longitudinal direction,
The electric snow melter insertion-type extraction tool according to claim 1, wherein the support metal fitting adjustment portion includes a through pin that can be disposed through any one of the adjustment through holes.   The electric snow melter insertion device according to any one of claims 1 to 3, wherein the rail holding portion is opened in a substantially U shape so as to be engageable with a side of an upper plate of the rail. Shape extraction tool.