JP3950209B2 - Trolley wire cutting device with detection wire - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cutting device for a trolley wire with a detection line, and more particularly to a cutting device for a trolley wire with a detection line that can easily cut only the trolley wire without cutting the detection line.
[0002]
[Prior art]
The trolley wire for supplying power to the train is worn mechanically by the sliding contact of the pantograph and electrically by the spark, and therefore needs to be replaced periodically.
[0003]
When this trolley wire is replaced, that is, as a method of automatically detecting the allowable limit of wear, a detection wire consisting of a conductive wire with insulation coating is inserted into the trolley wire, and the trolley wire is worn beyond the allowable limit. In this case, since the insulation coating of the detection line is broken and the conductive wire is short-circuited through a pantograph or the like, a method of detecting this by a detection device is employed.
[0004]
[Problems to be solved by the invention]
By the way, the trolley wire is formed by cutting the trolley wire to a predetermined length and stretching the trolley wire via a tensioning device. In the case of the trolley wire including the detection wire, the trolley wire is stretched by the tensioning device. When installing, it is necessary to expose the detection line inserted into the trolley line by a required length from the cut end of the trolley line and connect it to the detection device.
However, since the trolley wire is usually cut by a worker using a general-purpose cutter or a gold saw at the site, when the trolley wire with the detection wire is cut, the detection wire is mistakenly attached together with the trolley wire. In many cases, the trolley wire becomes shorter than a predetermined length and becomes unusable, and there is a problem that a worker who performs the trolley wire cutting work places a mental burden.
[0005]
In view of the problems associated with cutting a trolley wire with a detection line, the present invention provides a cutting device for a trolley wire with a detection line that can easily cut only the trolley wire without cutting the detection line. Objective.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a trolley wire cutting device according to the present invention comprises a trolley wire holding jig having a trolley wire holding portion for holding a trolley wire, and a cutter body. At both ends of the jig, a guide for guiding the cutter main body in a direction perpendicular to the longitudinal direction of the sandwiched trolley wire is provided, and the cutter body is moved along the guide so as to move from above and below the sandwiched trolley wire. In addition, a cutting groove having a predetermined depth is formed in a direction orthogonal to the longitudinal direction of the trolley wire.
[0007]
The cutting device for the trolley wire with the detection line is configured to move the cutter body along a guide that guides the cutter body in a direction orthogonal to the longitudinal direction of the trolley wire formed at both ends of the trolley wire holding jig, From the upper and lower sides of the trolley wire clamped in the trolley wire holding jig of the trolley wire holding jig, a predetermined depth in the direction perpendicular to the longitudinal direction of the trolley wire, more specifically, the detection line is not reached. By forming the cutting groove with the depth, the trolley line can be reliably cut leaving the detection line, and the detection line can be exposed.
[0008]
In this case, the trolley wire holding portion can be configured to hold the trolley wire at two points in the longitudinal direction of the trolley wire with a predetermined interval.
[0009]
Thus, the trolley wire that is normally curved can be reliably held by the small trolley wire holding jig.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a cutting device for a trolley wire with a detection line according to the present invention will be described below with reference to the drawings.
[0011]
The trolley wire cutting device including the detection wire is divided into two parts, attached to both sides of the trolley wire T, and sandwiching and fixing the trolley wire T, and the trolley wire holding jig A Electric cutters guided by the jig A to form cutting grooves M1 and M2 having a predetermined depth in the direction perpendicular to the longitudinal direction of the trolley wire T from above and below the trolley wire T. It is comprised from the main body B.
[0012]
As shown in FIGS. 1 to 3, the trolley wire holding jig A is composed of jig bodies 1 and 2 that are divided into left and right (see FIG. 2). The handle 1H, 2H is formed on the inner side, and the trolley wire holding portions 11, 21 formed in accordance with the outer shape of the trolley wire T are formed inside.
In this case, the trolley wire holding portions 11 and 21 are formed at two locations in the longitudinal direction of the trolley wire T with a predetermined interval by forming space portions 11m and 21m inside the jig main bodies 1 and 2, respectively. The wire T is configured to be clamped, so that the trolley wire T that is normally wound and curved can be securely held as it is without applying a large force with the small trolley wire holding jig A. To be able to.
[0013]
In addition, guide holes 12 and 12 and screw holes 13 are formed in one jig body 1, and guide rods 22 and 22 and jig body 2 are disposed in positions opposite to the other jig body 2. A screw rod 23 having a knob 23c is disposed on the outer side of the guide rods, guide rods 22 and 22 are inserted into the guide holes 12 and 12, and the screw rod 23 is screwed into the screw hole 13 so that both jigs are fitted. The main bodies 1 and 2 are configured to be able to contact and separate with the trolley wire T interposed therebetween.
When the jig bodies 1 and 2 are separated from each other, a gap larger than the diameter of the trolley wire T is formed between the jig bodies 1 and 2, and the trolley is formed between the jig bodies 1 and 2 from this gap. The lengths of the guide rods 22 and 22 and the screw rod 23 are set so that the line T can be inserted.
Further, annular grooves 22a, 22a and 23a are formed at the tips of the guide rods 22 and 22 and the screw rod 23, respectively. After the jig bodies 1 and 2 are assembled, the retaining rings 22b, 22b and 23b are fitted. Thus, the jig bodies 1 and 2 are not separated.
[0014]
In addition, the cutter body B is guided to the upper and lower outer edges (see FIG. 1) of both jig bodies 1 and 2 in a direction perpendicular to the longitudinal direction of the trolley wire T sandwiched by the trolley wire sandwiching portions 11 and 21. Rail-shaped guides 14 and 24 are provided, and the cutter body B can be moved along the guides 14 and 24.
In the present embodiment, the guides 14 are formed on both sides of the upper end edge of one jig body 1 and the guides 24 are formed on both sides of the lower end edge of the other jig body 2. The attachment form to the jig bodies 1 and 2 is not limited to the form of the present embodiment. For example, both the guides 14 and 24 may be provided in any jig body, Arbitrary attachment forms, such as providing 24 upside down from the present embodiment, can be adopted.
In this case, for example, the fixing formed on the guides 14 and 24 is such that the mounting positions of the guides 14 and 24 can be adjusted in the vertical direction to change the depth of the cutting grooves M1 and M2 to be formed. It is preferable to form the bolt holes of the bolts 14a and 24a into long holes that are long in the vertical direction.
Then, the guides 14, 24 are positioned so that the guides 14, 24 are positioned along the other jig body when the jig bodies 1, 2 are brought close to each other and the trolley wire T is held between the trolley wire holding parts 11, 21. The projecting length of 24 is set.
The guides 14 and 24 can be formed in a groove shape in addition to the rail shape as shown in the present embodiment.
[0015]
The cutter body B uses a commercial power source, a rechargeable battery, or the like as a power source, and includes a disc-shaped cutting blade 31 that is driven by a motor at a required number of revolutions. The casing 32 includes a trolley wire holding jig A. Holders 33 and 33 having groove portions parallel to the cutting blade 31 are provided so as to be fitted to the guide 14 or the guide 24 and guide the cutter body B along the guide 14 or the guide 24.
The cutter body B can be configured by attaching holders 33, 33 to a general-purpose product.
[0016]
Next, the usage method and operation of the cutting device for the trolley wire with the detection wire will be described.
The screw rod 23 is rotated to separate the two jig main bodies 1 and 2, and after inserting the trolley wire T between the two jig main bodies 1 and 2 from the gap, the screw rod 23 is rotated to both the jigs. The main bodies 1 and 2 are brought close to each other, and the trolley wire T is held and fixed to the trolley wire holding portions 11 and 21.
At this time, since the trolley wire holding portions 11 and 21 are formed with the space portions 11m and 21m inside the jig bodies 1 and 2, the trolley wire holding portions 11 and 21 are arranged at two locations in the longitudinal direction of the trolley wire T with a predetermined interval therebetween. The wire T can be clamped, whereby the trolley wire T that is normally wound and curved can be reliably held without applying a large force.
[0017]
The holder 33 of the cutter body B is fitted from one side of the trolley wire holding jig A, for example, the side of the guide 14.
Then, by driving the motor of the cutter main body B and moving the cutter main body B along the guide 14 while rotating the cutting blade 31, as shown in FIG. 4, from above the sandwiched trolley wire T, In a direction orthogonal to the longitudinal direction of the trolley wire T, a cutting groove M1 having a predetermined depth defined by the guide 14 is formed.
At this time, the reinforcing wire T1 of the trolley wire T is also cut, but the detection wire S is not damaged including the insulation coating.
[0018]
Next, the motor of the cutter body B is stopped, the cutter body B is removed from the guide 14 of the trolley wire holding jig A, and the holder 33 of the cutter body B is fitted from the side of the other guide 24.
Then, by driving the motor of the cutter body B and moving the cutter body B along the guide 24 while rotating the cutting blade 31, as shown in FIG. 4, from below the sandwiched trolley wire T, A cutting groove M2 having a predetermined depth defined by the guide 24 is formed in a direction orthogonal to the longitudinal direction of the trolley line T.
At this time, the detection line S is not damaged including the insulating coating.
[0019]
Thus, after cutting the upper and lower sides of the trolley wire T leaving the slight uncut portion M3 where the detection line S is located, the motor of the cutter body B is stopped, and the cutter body B is attached to the trolley wire holding jig A. Remove from guide 24.
[0020]
Then, by bending the portion where the cutting grooves M1 and M2 of the trolley wire T are formed several times, the end cutting portion M3 of the trolley wire T can be cut leaving the detection line S.
Thereafter, the screw rod 23 is rotated to separate the jig bodies 1 and 2 from each other, the trolley wire T is taken out, and the trolley wire cutting operation is completed.
[0021]
【The invention's effect】
According to the trolley wire cutting device of the present invention, the cutter body is moved along a guide for guiding the cutter body in a direction perpendicular to the longitudinal direction of the trolley wire formed at both ends of the trolley wire holding jig. By detecting the trolley wire holding jig, the trolley wire holding portion of the trolley wire holding portion has a predetermined depth in the direction perpendicular to the longitudinal direction of the trolley wire, more specifically, detection. By forming a cutting groove having a depth that does not reach the line, the trolley line can be reliably cut leaving the detection line to expose the detection line.
As a result, when the trolley wire with the detection wire is cut, the accident of cutting the detection wire together with the trolley wire can be eliminated, and the waste of the trolley wire can be eliminated. The mental burden of the worker who performs can be reduced.
[0022]
In addition, the trolley wire holding part is configured to hold the trolley wire at two locations in the longitudinal direction of the trolley wire at a predetermined interval, so that the trolley wire that is normally curved can be used for holding a small trolley wire. It can be securely held with a jig.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of a trolley wire cutting device with a detection wire according to the present invention.
FIGS. 2A and 2B are front views of a trolley wire holding jig, in which FIG. 2A shows a state where the trolley wire is not clamped and FIG. 2B shows a state where the trolley wire is clamped.
FIG. 3 is an exploded perspective view of the same.
FIG. 4 is an explanatory diagram showing a cutting state of the trolley wire.
[Explanation of symbols]
A A trolley wire holding jig B Cutter body T Trolley wire M1 Cutting groove M2 Cutting groove M3 Uncut portion 1 Jig body 11 Trolley wire holding portion 14 Guide 2 Jig body 21 Trolley wire holding portion 24 Guide 23 Screw rod 31 Cutting Blade 33 holder

Claims (2)

The trolley wire holding jig (A) provided with the trolley wire holding portions (11, 21) for holding the trolley wire (T) and the cutter body (B), the trolley wire holding jig (A) Guides (14, 24) for guiding the cutter body (B) in a direction orthogonal to the longitudinal direction of the sandwiched trolley wire (T) are provided at both ends, and the cutter body (B ) Are formed to form cutting grooves (M1, M2) each having a predetermined depth in the direction perpendicular to the longitudinal direction of the trolley wire (T) from above and below the sandwiched trolley wire (T). A trolley wire cutting device including a detection wire, characterized in that it is configured as described above. 2. The trolley wire holding portion (11, 21) is configured to hold the trolley wire (T) at two points in the longitudinal direction of the trolley wire (T) at a predetermined interval. Trolley wire cutting device with no detection wire.

Images