JP4266468B2 - Gold wheel with sensor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a gold wheel used in laying work over an overhead wire such as a towline, a messenger wire or a cable (hereinafter collectively referred to simply as an overhead wire), and more specifically, detects an abnormal state of the overhead wire. The invention relates to a gold wheel with a sensor for stopping the movement of the overhead wire.
[0002]
[Prior art]
In the work to negotiate the cable with the utility pole, in addition to the cable, the towline and the messenger wire are extended over a long distance. Conventionally, gold wheels have been used to move such overhead wires over the air. There are different types of gold cars depending on the application. No. 2 gold cars are used to suspend overhead wires on ordinary overhead tracks. There is a No. 4 gold car for lowering.
[0003]
In addition to these No. 2 and No. 4 gold wheels, anti-back gold wheels are also known. The anti-back metal wheel has an anti-back function for preventing (anti-back) movement in the direction opposite to the cable extending direction. The anti-back function prevents an abnormal situation where the overhead wire runs backward. The prior art of this anti-back gold wheel is disclosed in, for example, Japanese Patent Laid-Open No. 4-351406 and Japanese Utility Model Laid-Open No. 5-25913.
[0004]
In addition, the present inventor examined these prior arts, invented an anti-back gold wheel that improves the problems of the prior art, and was filed as Japanese Patent Application No. 11-348379 (name of the invention "anti-back gold wheel"). I have filed a patent application. It is an anti-back gold wheel that realizes not only the anti-back function but also miniaturization, weight reduction, and mechanism simplification, and has improved the work efficiency of the laying work of the overhead wire than before.
[0005]
However, even if only an anti-back gold wheel having an anti-back function is used, a new abnormal situation that cannot be prevented has been confirmed. Hereinafter, an outline of such an abnormal situation will be described. FIG. 19 is an explanatory diagram for explaining an outline of an overhead wire laying operation using an anti-back gold wheel.
In the overhead wire laying work using the anti-back metal wheel, as shown in FIG. 19 (a), the overhead wire can be moved in the forward wire feed forward direction and the overhead wire cannot be moved in the reverse direction of the overhead wire feed. If you extend the line, there will be no situation where the overhead line will go back.
[0006]
However, there is a possibility that an abnormal situation such as the hanging of the overhead line occurs in the overhead line laying work using the anti-back gold wheel. For example, as shown in FIG. 19 (b), if a sag occurs between two anti-back gold wheels, one anti-back gold wheel (left side in the figure) does not reverse the overhead wire, but the other anti-back gold wheel In the car (right side of the figure), the overhead wire is sent in the forward direction of the overhead wire, so the drooping increases.
As described above, there is a drawback that the messenger wire and the overhead wire may hang down even if the No. 2 gold car, the No. 4 gold car, or the anti-back gold car is used.
[0007]
Depending on where the overhead line hung, there was a risk of inducing an accident. For example, the overhead line laying work is often performed across a trunk road or a city road with a high traffic volume on the lower side. In the unlikely event that the overhead line hangs down on the road, the car will catch this overhead line, and in the worst case, it will lead to a major accident such as the collapse of the utility pole, the fall of the worker, or the injury of the driver of the car, so it must be avoided firmly It was not good.
For this reason, development of a gold wheel having a brake function for detecting an abnormality of an overhead wire in the wire drawing work and stopping the wire drawing is being studied.
[0008]
For example, the anti-back gold wheel disclosed in Japanese Patent Laid-Open No. 4-351406 gives a load force in the cable extension direction and in the reverse direction by sandwiching the cable up and down by a plurality of rollers and pressing the cable from the up and down direction. In addition to the anti-back function, the load force prevents the cable from moving easily in the direction opposite to the direction in which the cable is extended, thereby providing a brake function to cope with the drooping of the cable.
[0009]
However, as anti-back gold wheels increase, the load applied to the cable accumulates and increases. Since the cable extension extends over a long distance, it is necessary to place anti-back gold wheels at a plurality of locations (particularly locations near the road where it is desired to reliably prevent the fall). There was also a possibility that the cable could not be drawn because the cable was hindered by an excessive load force.
Further, the load force that the cable can move normally does not completely stop the cable, and does not completely prevent the drooping.
[0010]
Furthermore, the invention of Japanese Utility Model Laid-Open No. 5-25913 and the anti-back metal wheel of Japanese Patent Application No. 11-348379 by the applicant of the present patent do not have a brake function because the anti-back function is preferentially enhanced. It was impossible to prevent the occurrence of sagging.
[0011]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above-described problems, and during normal overhead wire extension, the overhead wire can be moved without being constrained, and only when an abnormality such as an abnormal inclination or abnormal speed of the overhead wire is detected. An object of the present invention is to provide a sensor-equipped gold wheel that improves the safety of an overhead wire laying operation by stopping the extension of the overhead wire in the line direction.
[0012]
[Means for Solving the Problems]
  In order to solve the above-mentioned problem, the sensor-equipped gold wheel according to claim 1 is:
  At least a pair of rollers that rotate following the extended overhead wire;
  A receiving member disposed between the pair of rollers in a state of having a gap apart from the extended wire;
  At a position facing this receiving member across the overhead wireIt is supported by the rotation shaft providedIt is arranged rotatablyIn addition, the cam surface is formed so as to have a cam curve having a different radius from the rotation shaft so that the cam surface faces the receiving member.A rotating cam for the brake,
  Overhead wire outside the rollerThere is a member that comes into contact with the wire, and this member responds to the inclination of the overhead wireAn inclination detector for detecting the inclination of
  A brake drive unit that rotates the brake cam according to the inclination detected by the inclination detection unit;
  A gold wheel with a sensor comprising:
  A brake rotating cam driven by the brake driving unitPress the overhead wire downward so that the overhead wire enters the gap between the receiving members.Between a pair of rollersThe overhead wire is sandwiched between the receiving member and the brake rotating cam.And press contact with the cam surface.It is characterized by stopping the movement of the overhead line.
[0013]
  Moreover, in the money wheel with a sensor according to claim 2,
  In the money wheel with a sensor according to claim 1,
  The tilt detector isThe link member, which is a pair of substantially A-shaped flat plates, and a plurality of struts passed between the pair of link members are integrally configured, and one strut near the apex of the substantially A-shaped flat plate is the center of rotation. And a driven roller is provided at one end of the substantially A-shaped flat plate, and the driven roller comes into contact therewith.Depending on the inclination of the overhead linerotationA first transmission member that moves,
  The brake drive unitThe pair of oval plates are pivotally supported by the rotation shaft of the brake turning cam, and the other end of the substantially A-shaped plate is freely rotatable on one side of the pair of oval plates. The brake rotating cam is fixed to the other side of the pair of oval plates.A second transmission member
  The brake rotating cam rotates according to the movement of the second transmission member.
[0014]
  Moreover, in the money wheel with a sensor according to claim 3,
  In the money wheel with a sensor according to claim 1,
  The tilt detector isThe overhead wire follower attached to the overhead wire and having a driven member that moves up and down according to the inclination of the overhead wire, suspended from a messenger wire that has been negotiated in advance,
  The brake drive unitThe brake rotating cam is pivotally supported, the brake wire is connected to one end, and the brake rotating cam is connected to the other end.A rotation transmission member
  SaidThe movement of the driven member of the inclination detection unit is transmitted as the rotation of the rotation transmission member via the brake wire,
  AboveThe brake rotating cam rotates according to the rotation of the rotation transmitting member.
[0015]
  In the gold wheel with a sensor according to claim 4,
  At least a pair of rollers that rotate following the extended overhead wire;
  A receiving member disposed between the pair of rollers in a state of having a gap apart from the extended wire;
  At a position facing this receiving member across the overhead wireIt is supported by the rotation shaft providedIt is arranged so that it can rotate freely, andthisIt is formed to have cam curves with different radii from the rotation axis.So that the cam surface faces the receiving member.A rotating cam for the brake,
  Of the overhead wire outside the rollerIt includes a pair of sensor units that output the upper limit position or the lower limit position at a certain point as an electrical detection signal. When it is between the lower limit position and the upper limit position, the inclination is within the allowable range, and is below the lower limit position or above the upper limit position. When as an unacceptable slopeAn inclination detector to detect;
  This tilt detectorAn arithmetic drive control unit that determines whether or not one of the pair of sensor units outputs a detection signal, and is driven according to an output from the arithmetic drive control unit, and the brake rotating cam is normally used Includes a solenoid with which the plunger abuts, and when the sensor unit outputs a detection signal and detects an unacceptable inclination, the arithmetic drive control unit drives the solenoid to release the restraint of the brake rotating cam and rotate FreelyA brake drive unit,
  A gold wheel with a sensor comprising:
  The inclination detector can adjust the inclination of the overhead line with respect to the horizontal direction.Unacceptable slopeIs detected, the brake rotation cam is released, the brake rotation cam is driven by the overhead wire, and is rotated to increase the radius of the brake rotation cam to narrow the overhead wire passage. The rotating cam presses the overhead wire downward, causing the overhead wire to enter the gap between the receiving members,Between a pair of rollersThe overhead wire is sandwiched between the receiving member and the brake rotating cam.And press contact with the cam surface.It is characterized by stopping the movement of the overhead line.
  As the tilt detection unit, a known switch that outputs an electrical detection signal such as a mechanical switch, a light detection switch, a mercury switch, a magnetic sensor switch, or a Hall element can be used.
[0016]
  Moreover, in the money wheel with a sensor according to claim 5,
  At least a pair of rollers that rotate following the extended overhead wire;
  A receiving member disposed between the pair of rollers in a state of having a gap apart from the extended wire;
  It is pivotally supported by a rotating shaft provided at a position facing the receiving member across the overhead wire, and is formed to have a cam curve having a different radius from the rotating shaft. A rotating cam for braking, the cam surface of which is opposed to the receiving member;
  A sliding piece that is in contact with the moving overhead wire and is driven in the extending direction; and an elastic member that is biased on both sides of the sliding piece to position the sliding piece at a predetermined position. A speed detector that roughly detects the wire drawing speed by replacing the moving piece;
  A brake drive unit having a restraining member that releases the restraint of the rotating cam for braking when the sliding piece of the speed detection unit moves beyond a predetermined distance, and makes it freely rotatable;
  A gold wheel with a sensor comprising:
  When the sliding piece moves beyond the predetermined distance by the speed detector, the restraint of the brake rotating cam is released, the brake rotating cam is driven by an overhead wire, and the radius of the brake rotating cam is increased. Then, the passage of the overhead wire is narrowed, the brake rotating cam presses the overhead wire downward to insert the overhead wire into the gap of the receiving member, and the overhead wire is sandwiched between the receiving member and the brake rotating cam between the pair of rollers and the cam Press on the surfaceIt is characterized by stopping the movement of the overhead line.
[0017]
  In the money wheel with a sensor according to claim 6,
  In the money wheel with a sensor according to claim 5,
  It has a pin that protrudes from the side of the brake rotating cam and contacts the sliding piece of the speed detector,
  When the sliding piece of the speed detector moves beyond a predetermined distance, the pin is detached from the sliding piece, releasing the restraint of the brake rotating cam and making it freely rotatable.It is characterized by that.
[0018]
  Moreover, in the money wheel with a sensor according to claim 7,
  At least a pair of rollers that rotate following the extended overhead wire;
  A receiving member disposed between the pair of rollers in a state of having a gap apart from the extended wire;
  It is pivotally supported by a rotating shaft provided at a position facing the receiving member across the overhead wire, and is formed to have a cam curve having a different radius from the rotating shaft. A rotating cam for braking, the cam surface of which is opposed to the receiving member;
  When it is detected that the rotation speed detection unit for detecting the rotation speed of the roller and the rotation speed output by the rotation speed detection unit are converted into the drawing speed of the overhead wire and the drawing speed exceeds a predetermined value A speed detection unit having an arithmetic drive control unit that outputs a stop signal to
  A brake drive unit that includes a solenoid that a plunger abuts on the brake rotation cam in a normal state and releases the restraint of the brake rotation cam in response to a stop signal;
  A gold wheel with a sensor comprising:
  When the speed detection unit detects that the wire drawing speed exceeds a predetermined value, the restraint of the brake rotating cam is released, the brake rotating cam is driven by the overhead wire, and the radius of the brake rotating cam is increased. Rotate to narrow the passage of the overhead wire, the brake rotating cam presses the overhead wire downward to insert the overhead wire into the gap of the receiving member, and the overhead wire is sandwiched between the receiving member and the brake rotating cam between the pair of rollers And press contact with the cam surfaceIt is characterized by stopping the movement of the overhead line.
[0019]
  Moreover, in the money wheel with a sensor according to claim 8,
  ClaimAny one of claims 1 to 7In the described gold wheel with sensor,
  At least two or more gold cars with sensors are arranged side by side, and a plurality of overhead lines are arranged side by sideIt is characterized by doing.
[0020]
  Moreover, in the money wheel with a sensor according to claim 9,
  Claim8In the gold wheel with sensor described in
  At least two gold wheels with sensorsThe width of each roller is different and multiple diameters are differentIt is characterized by extending the overhead wires side by side.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the gold wheel with a sensor of the present invention will be described. First, the sensor-equipped gold wheel according to the first embodiment of the present invention will be described. 1 is a front view of a gold wheel with a sensor according to the present embodiment, FIG. 2 is a right side view of the same, FIG. 3 is a plan view of the same, FIG. 4 is a plan view of the same when the inclination detector is removed, and FIG. FIG. 6 and FIG. 7 are explanatory diagrams for explaining the inside view taken along the line AA, FIG. 8 is an explanatory diagram for explaining the cam curve of the brake rotating cam, and FIG. Explanatory drawing to explain, FIG. 10, FIG. 11 is explanatory drawing explaining an attachment form similarly. Hereinafter, the gold wheel with a sensor according to the present embodiment will be described with reference to FIGS. For the sake of clarity, a part of the illustration is omitted.
[0023]
2 and 3, the sensor-equipped gold wheel 100 according to the present embodiment has a configuration in which two sensor-equipped gold wheels are mounted in parallel, and can extend two overhead wires. Yes. As shown in FIGS. 1 to 5, the sensor-equipped metal wheel 100 includes an outer frame frame 1, a roller frame 2 for a small-diameter overhead wire that is attached to the outer frame frame 1 so as to be freely opened and closed, and a roller for a large-diameter overhead wire. A frame 3, a pair of rollers 4 and 5 rotatably attached to the roller frames 2 and 3, and an elastic rubber portion which is a specific example of the receiving member of the present invention and is attached to the roller frames 2 and 3, respectively. 6, 7, brake rotating cams 8, 9 pivotally supported on the outer frame frame 1, gold wheel arm mounting portions 10 fixed to the outer frame frame 1, and roller frames 2, 3 Are provided with guide rollers 11 and 12 that are pivotally supported on each other, and inclination detectors 13 and 14 fixed to the outer frame.
[0024]
As shown in FIGS. 4 and 5, the outer frame 1 is formed by combining four steel plates 1 a, a central cylindrical column 1 b, and outer cylindrical columns 1 c. Specifically, a bolt 1d is inserted so as to pass through holes provided in four steel plates 1a and cylindrical columns 1b and 1c, and two outer U-shaped steel plates 1a are provided with two U-shaped brackets. 1e is attached, and these four steel plates 1a, cylindrical struts 1b and 1c, and a U-shaped metal fitting 1e are fixed by two nuts 1f from the outside so as to be integrated with bolts 1d.
[0025]
Such fixing through the outer frame 1 with bolts and nuts is performed at three places as shown in FIG. The other parts are the same as the above description, and the description is omitted.
It should be noted that the cylindrical strut is not used as a short nut / bolt for attaching and fixing the U-shaped metal fitting 1e only to the steel plate 1a at a place where the rotation of the brake rotating cams 8 and 9 interferes. Therefore, the brake rotating cams 8 and 9 and the cylindrical support do not interfere with each other. Further, the support shaft of the brake rotating cams 8 and 9 also serves as the cylindrical column 1c.
In addition, inclination detectors 13 and 14 described later also reinforce the structure of the outer frame 1. The outer frame 1 is configured in this way.
[0026]
As shown in FIG. 2, holes 1g are provided in the side portions of the two U-shaped metal fittings 1e, respectively. Although not shown, it is provided for attaching a metal wheel with a sensor to a utility pole by inserting a mounting belt bracket or a chain through the hole 1g. Actually, it is often used together with an anti-back gold wheel, and both the anti-back gold wheel and the gold wheel with a sensor often use a dedicated mounting bracket for mounting on one electric pole. A detailed mounting form will be described later.
[0027]
The roller frames 2 and 3 are pivotally supported by shaft support portions 2a and 3a as shown in FIGS. 2 and 4, and are attached so as to be rotatable with respect to the outer frame frame 1 as shown in FIG.
Further, a pair of rollers 4 and 5 are pivotally supported on the roller frames 2 and 3 so as to be rotatable. The rollers 4 and 5 have a substantially thread-wound shape, and guide the overhead wire on the rollers 4 and 5 to the center.
As shown in FIG. 4, the roller 4 has a reduced roller width for small-diameter overhead wires, and the roller 5 has a longer roller width for large-diameter overhead wires. Regarding these roller widths, any length of roller can be selected according to the application.
[0028]
Further, as shown in FIGS. 2 and 4, guide rollers 11 and 12 are pivotally supported at end portions of the roller frames 2 and 3 so as to be rotatable. The guide rollers 11 and 12 have a function of guiding the overhead wire to return to the rollers 4 and 5 when the overhead wire is likely to come off from the rollers 4 and 5.
In addition to the cases shown in FIGS. 2 and 4, the guide rollers 11 and 12 may be made thicker so that the guide function is always in contact with the overhead wire.
[0029]
When the roller frames 2 and 3 are opened as shown in FIG. 5, when the screw fastening portions 2 b and 3 b screwed into the screw portions at the tips of the support shafts of the rollers 4 and 5 are turned and moved to the tip, The roller frames 2 and 3, the rollers 4 and 5, the elastic rubber portions 6 and 7, and the guide rollers 11 and 12 are moved together to be able to attach an overhead wire to the sensor-equipped wheel 100.
[0030]
When the overhead wire is attached, the overhead wire is disposed on the rollers 4 and 5 as shown in FIG. Further, the elastic rubber portions 6 and 7 disposed between the pair of rollers 4 and 5 are slightly below the rollers 4 and 5 so that there is a gap between the elastic rubber portions 6 and 7 and the overhead wire. Become. This gap will be described later.
[0031]
The brake rotating cams 8 and 9 are pivotally supported on the cylindrical column 2c constituting the outer frame 1 described above. The brake rotating cams 8 and 9 are also made of an elastic body such as rubber, and are made to follow when the frictional resistance is increased with respect to the overhead wire and the moving cable comes into contact. The brake rotating cams 8 and 9 are disposed at positions facing the elastic rubbers 6 and 7 across the overhead wire.
[0032]
Such brake rotating cams 8 and 9 are configured such that the radii of the respective portions from the rotating shaft are different as shown in FIG. The cam curves of the brake rotating cams 8 and 9 are curves in which the radius increases with the movement of a → b → c, and the brake rotating cam rotates counterclockwise as shown in FIG. 9A. Then, the moving path of the overhead wire is widened, and when it rotates clockwise as shown in FIG. 9B, the moving path of the overhead wire is narrowed.
The behavior of the brake rotating cam will be described later.
[0033]
As shown in FIG. 1, a gold wheel arm attachment portion 10 is attached to the upper side of the outer frame 1. The gold wheel arm mounting portion 10 is provided to suspend the gold wheel with sensor from the utility pole. The gold wheel arm attachment portion 10 is provided with an attachment portion main body 10a, a rod 10b having one end rotatably attached and a screw portion provided at the other end, a rod 10b, and the attachment portion main body 10a. The screwing part 10c to fix is provided.
A square hole is formed by fixing the rod 10b to the attachment portion main body 10a. As shown in FIGS. 10 and 11, the gold wheel arm of the mounting bracket is inserted into the square hole of the gold wheel arm mounting portion 10, and the gold wheel 100 with the sensor is attached to the utility pole.
[0034]
Inclination detectors 13 and 14 are fixed to the outer frame 1. As shown in FIGS. 2, 3, and 6, the inclination detection units 13 and 14 include a pair of support frames 13 a and 14 a that are screwed and fixed to the outer frame 1, and struts that are passed to the support frames 13 a and 14 a. 13b, 14b, first transmission members 13c, 14c that are pivotally supported by these columns 13b, 14b, and driven rollers 13d that are pivotally attached to the first transmission members 13c, 14c via the pivots. , 14d, and second transmission members 13e, 14e that are loosely supported by the first transmission members 13c, 14c via a support shaft and are also supported by the brake rotary cams 8, 9 via the support shaft. I have.
[0035]
Specifically, as shown in FIGS. 2 and 7, the first transmission members 13c and 14c are a pair of link members 13f and 14f that are substantially A-shaped flat plates, and a plurality of first transmission members 13c and 14c that are passed to the pair of link members 13f and 14f, respectively. It is comprised integrally with the support | pillars 13g and 14g. The first transmission members 13c and 14c rotate about the upper support columns 13b and 14b as the rotation center. Hereinafter, it demonstrates collectively as the 1st transmission members 13c and 14c.
The second transmission members 13e and 14e are a pair of oval plates attached so as to be sandwiched from both sides of the brake rotating cams 8 and 9 as shown in FIGS. Hereinafter, the second transmission members 13e and 14e will be described collectively.
[0036]
The first transmission members 13c and 14c, the second transmission members 13e and 14e, and the brake rotating cams 8 and 9 are link-coupled, and the first is generated when the driven rollers 13d and 14d move up and down following the overhead wire. Transmission to the brake rotating cams 8 and 9 is performed via the transmission members 13c and 14c and the second transmission members 13e and 14e. The sensor-equipped gold wheel 100 has such a configuration.
[0037]
Next, the behavior of the braking cams 8 and 9 due to the inclination of the overhead wire will be schematically described.
When the overhead wire hangs down in front of the brake money wheel due to sag from a state where there is no slack (hereinafter referred to as a tight line state), as shown in FIG. Various designs are possible where the slope is judged to hang down. However, in this embodiment, the two power poles have an interval of about 30 m, and a messenger wire is intervened between these power poles. It is assumed that there is no problem with an inclination within 5.7 degrees caused by a normal sag due to its own weight (down about 1 m in the center), and the brake rotating cams 8 and 9 do not contact the overhead line as shown in FIG. To.
[0038]
However, as shown in FIG. 9B, when the inclination exceeds 14.4 degrees caused by the hang-up exceeding the dead weight of the messenger wire (down by about 1.5 m at the center), as shown in FIG. Apply brakes by bringing 8 and 9 into contact with the overhead wire.
The rotating cams 8 and 9 continue to rotate in the direction of arrow b due to the weight of the brake rotating cams 8 and 9 and the frictional resistance force between the overhead wires and the rotating cams 8 and 9. And the elastic rubber members 6 and 7 and the rotating cams 8 and 9 are firmly sandwiched and fixed. In this way, increase / decrease in the inclination of the overhead line is detected, and when the inclination of the overhead line increases, a brake is applied to the overhead line to prevent the overhead line from progressing.
[0039]
Then, the attachment form of the gold wheel with a sensor is demonstrated roughly. As shown in FIGS. 10 and 11, the sensor-equipped gold wheel 100 is normally used in combination with the above-described anti-back gold wheel 200 described as the prior art. A mounting bracket 400, which is a substantially U-shaped prism, is mounted on one electric pole 300 using a belt bracket 500 or a chain (not shown), and a pair of gold wheel arms 400 a and 400 b of the mounting bracket 400 is attached with a sensor-attached metal. It attaches so that the square hole of the gold wheel arm attaching part 10 of the car 100 and the anti-back gold wheel 200 may pass. In this case, the claw 400c prevents the sensor-equipped gold wheel 100 and the anti-back gold wheel 200 from falling off the gold wheel arms 400a and 400b.
[0040]
The size of the gold wheel arms 400a, 400b and the size of the square hole of the gold wheel arm mounting portion 10 are the same, and the screw portion 10c is loosened to open the rod 10b, and after mounting, the rod portion 10b is closed. If it is screwed and attached using the screwing part 10c, it will be fixed and will not move. In this case, the sensor-equipped gold wheel 100 is arranged in front of the extending direction of the overhead wire, and the anti-back gold wheel 200 is arranged behind.
[0041]
Then, the gold wheel with a sensor of 2nd Embodiment is demonstrated. Although the inclination detection unit of the sensor-equipped gold wheel according to the first embodiment mechanically detects the inclination, the inclination detection unit of the sensor-equipped gold wheel according to the present embodiment detects an inclination and detects an electrical signal. Is output. 12 and 13 are explanatory views for explaining the gold wheel with a sensor of this embodiment. Only the difference from the sensor-equipped gold wheel according to the first embodiment will be described. Hereinafter, the gold wheel with a sensor according to the present embodiment will be described with reference to FIGS.
[0042]
The gold wheel with a sensor shown in FIG. 12A is connected to the pair of sensor units 20 and 21 included in the pair of sensor units 20 and 21 as the tilt detection unit of the present invention and the brake drive unit of the present invention. And a pair of solenoids 24 and 25 which are included in the brake drive unit of the present invention and are driven in accordance with the control of the calculation drive control units 22 and 23. The tips of the solenoids 24 and 25 are in contact with the brake rotating cams 8 and 9 to restrain the brake rotating cams 8 and 9 from rotating.
There are various types of sensor units 20 and 21, which will be described in detail later.
[0043]
If the arithmetic drive control units 22 and 23 determine that a predetermined inclination is exceeded based on the detection signals output from the sensor units 20 and 21, the solenoids 24 and 25 are operated to cause the brake rotary cams 8 and 9 to operate. release. The brake rotating cams 8 and 9 are driven by the extended overhead wires and restrain the movement of the overhead wires as shown in FIG.
In this case, unlike the first embodiment, the drawing is not started unless the operator returns to the original state by the hand of the operator.
[0044]
As a specific example of the sensor units 20 and 21, as shown in FIG. 12B, contact type detection switches 20a and 21a are arranged above and below the overhead wire, and the overhead wire contacts the upper detection switches 20a and 21a. Is assumed that excessive tension is applied to the overhead wire, and if the overhead wire is in contact with the lower detection switches 20a and 21a, the overhead wire is drooped. Otherwise, the arithmetic drive control units 22 and 23 determine that the allowable range is satisfied. To do. When signals from the upper and lower detection switches 20a and 21a are detected, the solenoids 24 and 25 are operated to brake.
[0045]
Further, as shown in FIG. 13A, optical distance measuring sensors 20b and 21b for measuring the distance to the overhead line are respectively arranged on the upper side of the overhead line. It is assumed that the tension is applied, and if it is far from the distance measuring sensors 20b and 21b, the arithmetic drive control units 22 and 23 determine that the overhead wire has dropped and operate the solenoids 24 and 25 to apply the brake. May be.
[0046]
Further, as shown in FIG. 13B, LEDs (Light Emitting Diodes) 20d and 21d are attached to driven members 20c and 21c that move up and down together with the overhead wire, and are respectively disposed above and below the overhead wire. When the photodiodes 20e and 21e detect the light emitted by the LEDs 20d and 21d and the upper photodiodes 20e and 21e detect, it is assumed that an excessive tension is applied to the overhead wire, and the lower photodiodes 20e and 20e When 21e detects, the arithmetic drive control units 22 and 23 determine that the overhead line has drooped, and operate the solenoids 24 and 25 to apply the brake.
A spring force is applied to the driven members 20c and 21c in the upward direction by the springs 20f and 21f, and the overhead line hanging down due to gravity and the driven members 20c and 21c are surely brought into contact with each other, and the detection capability Is increasing.
[0047]
Further, the springs 20f and 21f of the sensor units 20 and 21 shown in FIG. 13 (b) are removed, and instead, lid members 20g and 21g are provided on the driven members 20c and 21c as shown in FIG. 13 (c). By enclosing the overhead line, the driven members 20c and 21c may always be driven by the overhead line. Even in this way, the arithmetic drive control units 22 and 23 determine that excessive tension of the overhead wire and hanging of the overhead wire are detected, and the solenoids 24 and 25 are operated to apply the brake.
Various types of sensor units 20 and 21 are conceivable as described above, but the present invention can be implemented as any sensor unit.
[0048]
Next, a sensor-equipped gold wheel according to a third embodiment will be described with reference to FIG. As shown in FIG. 14 (b), the pair of overhead wire followers 30 and 31, which are the inclination detectors, detect the relative distance between the messenger wire and the overhead wire, and are suspended from the messenger wire previously negotiated. The The movement of the driven members 30a and 31a that follow the overhead wire is transmitted to the rotation transmitting members 30c and 31c via the brake wires 30b and 31b. As shown in FIG. 14A, the rotation transmitting members 30c and 31c rotate the brake rotating cams 8 and 9.
As the inclination of the overhead wire increases, the brake wires 30b and 31b move upward, and the rotation transmitting members 30c and 31c rotate downward as indicated by the arrows in FIG. The moving cams 8 and 9 are moved downward to activate the brake function.
[0049]
Then, the money wheel with a sensor of a 4th embodiment is explained. FIG. 15 is an explanatory view for explaining a gold wheel with a sensor according to the present embodiment. In the first to third embodiments, the sensor-equipped gold wheel that detects the inclination by the inclination detection unit has been described. However, in the present embodiment, the sensor-equipped gold wheel detects the level of the wire drawing speed. Only differences from the sensor-equipped gold wheel of the first embodiment will be described. Hereinafter, the gold wheel with a sensor of this embodiment will be described with reference to FIG.
[0050]
The sensor-equipped gold wheel shown in FIG. 15 moves together with the sliding pieces 40 and 41 that are brought into contact with the overhead wire and driven by frictional force, the sliding pieces 40 and 41, and projects from the brake rotary cams 8 and 9. Constraining members 42 and 43 that abut against the provided pins and constrain the rotation of the brake rotating cams 8 and 9 and elastic members 44 and 45 that urge the engaging portions 42 and 43 are provided.
[0051]
As the extension speed of the overhead wire increases, the amount of movement of the sliding pieces 40, 41 increases, and when a certain extension speed is exceeded, the restraining members 42, 43 move away from the pins of the rotary cams 8, 9 for braking. The restraint of the rotary cams 8 and 9 is released. The brake rotating cams 8 and 9 are driven by the extended overhead wires and restrain the movement of the overhead wires as shown in FIG.
Also in this case, since the wire drawing is not started unless it is returned to the original state by the operator's hand, it can be used at a place where careful attention is required.
[0052]
Then, the money wheel with a sensor of a 5th embodiment is explained. FIG. 16 is an explanatory view for explaining a gold wheel with a sensor according to this embodiment. In the fourth embodiment, the gold wheel with a sensor that detects the speed by the speed detection unit using the sliding pieces 40 and 41 that follow the overhead wire has been described, but in this embodiment, the wire is drawn by using the rotational speed of the rollers 4 and 5. It is a gold wheel with a sensor that calculates the speed and detects the level of the wire drawing speed. Hereinafter, the gold wheel with a sensor of this embodiment will be described with reference to FIG.
[0053]
The gold wheel with sensor shown in FIG. 16 includes rotational speed detectors 50 and 51 for detecting the rotational speed of the rollers, and arithmetic drive included in the brake drive unit of the present invention and connected to these rotational speed detectors 50 and 51. The control units 52 and 53 are provided with solenoids 54 and 55 which are included in the brake drive unit of the present invention and are driven by the calculation drive control units 52 and 53 according to the control. The tips of the solenoids 54 and 55 are in contact with the brake rotating cams 8 and 9 and are restrained from rotating.
[0054]
As the drawing speed of the overhead wire increases, the rotational speed of the rollers 4 and 5 increases, and when the rotational speed exceeds a certain rotational speed, the drawing speed also exceeds a predetermined value, so that the overhead wire hangs down and the arithmetic drive control unit 52 and 53 judge and operate a solenoid.
In order to reliably transmit the movement of the overhead wire as the rotation of the rollers 4 and 5, another driven roller may be arranged at a position facing the rollers 4 and 5 with the overhead wire interposed therebetween. Such a design is appropriately selected.
In this case as well, since the wire is not started unless it is returned to the original state by the operator's hand, it can be used at a place where careful attention is required.
[0055]
As a precaution for using the sensor-equipped money wheel, there is a case where an operator on the ground, which is below the sensor-equipped money wheel, pulls the overhead line hanging from the sensor-equipped money wheel at the head of the overhead wire. Normally, the tilt detection unit of the sensor-equipped gold wheel detects the tilt and applies the brake, so that the worker cannot pull the overhead wire.
For this reason, when the overhead wire hangs down from the sensor-equipped metal wheel at the head of the overhead wire, it is necessary to devise a way to prevent the inclination detector from detecting the inclination.
[0056]
As a first method in this case, a rope is hung on a part of the inclination detectors 13 and 14 (for example, the columns 13g and 14g shown in FIG. 7), and the rope is hung on the messenger wire. The driven rollers 13d and 14d are lifted so as to hang down, and the suspended rope is operated so as not to detect the inclination, thereby allowing the overhead wire to pass freely. Then, after the overhead wire is passed between the utility poles, if the driven rollers 13d and 14d are lowered by operating the rope so that the driven rollers 13d and 14d are driven by the overhead wire, the braking function is exhibited.
[0057]
Furthermore, another form can be taken. The sixth embodiment of the present invention is devised so that the inclination detector does not detect the inclination when the overhead wire hangs down from the sensor-equipped metal wheel at the head of the overhead wire in the sensor-equipped metal wheel of the first embodiment. FIGS. 17 and 18 are explanatory views for explaining a gold wheel with a sensor according to a sixth embodiment of the present invention.
[0058]
In this embodiment, as shown in FIG. 17 and FIG. 18, in addition to the sensor-equipped gold wheel of the first embodiment, the detection interruption raising members 61 and 62 and springs 63 and 64 are provided.
The detection interruption springing members 61 and 62 are urged by the springs 63 and 64 in the direction indicated by the arrow in FIG. 17, and normally the support pillars 13b and 14b and the detection interruption springing member 61 are shown in FIG. , 62 are in contact with each other so that the detection units 13, 14 can be detected.
[0059]
When the inclination detectors 13 and 14 do not detect the inclination, as shown in FIG. 18, the ropes 65 and 66 that are attached to the tips of the detection interruption springing members 61 and 62 and hang downward are pulled, and the column 13g is pulled. , 14g and the detection interruption jumping members 61, 62 are brought into contact with each other, the link members 13f, 14f are jumped up, the driven rollers 13d, 14d are lifted away from the overhead line, and the inclination detection units 13, 14 have the overhead line. Free to pass. FIG. 18 shows a state in which the link members 13f and 14f of the inclination detectors 13 and 14 are completely flipped up.
Then, after the overhead wire is passed between the utility poles, if the driven rollers 13d and 14d are lowered to be driven by the overhead wire after the overhead wire is passed between the utility poles, the inclination detectors 13 and 14 function so as to exert a braking function. Become. Such a function may be added.
[0060]
By using the sensor-equipped gold wheel according to the embodiment as described above, the occurrence of sagging is prevented. Specifically, if a gold wheel with a sensor is added to the gold wheel on the rear side (right side in FIG. 19 (b)) shown in FIG. 19 (b), the movement of the overhead wire is performed by the brake function when an inclination is detected. Since it stops, the occurrence of sagging is prevented.
[0061]
In these embodiments, the sensor-equipped gold wheel, which is a double gold wheel, is schematically described. However, the present invention can be implemented as a single sensor-equipped gold wheel without being limited to two stations, or as a plurality of three or more sensor-equipped gold wheels. Whether to use a single or multiple gold car with a sensor is arbitrarily determined by the construction method of the overhead wire.
[0062]
Furthermore, although it is a gold wheel with a sensor provided so that a large-diameter overhead wire and a small-diameter overhead wire pass, it is also possible to eliminate the distinction between a large diameter and a small diameter, and both as a gold wheel with a sensor that targets both the same diameter overhead wires good. These are also arbitrarily determined by the construction method of the overhead wire.
[0063]
Further, as another example of the brake drive unit, a normal motor that rotationally drives the brake rotating cam, or a ventilation fan motor that applies a pulling force to the motor rotating cam and instantaneously rotates the motor can be used. These are appropriately selected.
[0064]
【The invention's effect】
According to the present invention, at the time of normal overhead wire extension, the overhead wire is made movable without being constrained, and the extension of the overhead wire is stopped in the direction of the overhead wire extension only when an abnormality such as an abnormal inclination or abnormal speed of the overhead wire is detected. Thus, it is possible to provide a sensor-equipped gold wheel that improves the safety of the overhead wire laying operation.
[Brief description of the drawings]
FIG. 1 is a front view of a sensor-equipped gold wheel according to a first embodiment of the present invention.
FIG. 2 is a right side view of the gold wheel with sensor according to the first embodiment of the present invention.
FIG. 3 is a plan view of the gold wheel with a sensor according to the first embodiment of the present invention.
FIG. 4 is a plan view of the first embodiment of the present invention in the case where the inclination detecting unit of the gold wheel with sensor is removed.
FIG. 5 is an explanatory view for explaining the mounting of the overhead wire of the sensor-equipped gold wheel according to the first embodiment of the present invention.
FIG. 6 is an explanatory view for explaining the interior of the gold wheel with a sensor according to the first embodiment of the present invention, taken along line AA.
FIG. 7 is an explanatory diagram for explaining an interior view taken along line AA of the sensor-equipped gold wheel according to the first embodiment of the present invention.
FIG. 8 is an explanatory diagram for explaining a cam curve of a brake rotary cam of the sensor-equipped gold wheel according to the first embodiment of the present invention.
FIG. 9 is an explanatory diagram for explaining a brake operation of the sensor-equipped gold wheel according to the first embodiment of this invention.
FIG. 10 is an explanatory view for explaining a mounting form of the sensor-equipped gold wheel according to the first embodiment of the present invention.
FIG. 11 is an explanatory view for explaining a mounting form of the sensor-equipped gold wheel according to the first embodiment of the present invention.
FIG. 12 is an explanatory view illustrating a sensor-equipped gold wheel according to a second embodiment of the present invention.
FIG. 13 is an explanatory view illustrating a gold wheel with a sensor according to a second embodiment of the present invention.
FIG. 14 is an explanatory view illustrating a gold wheel with a sensor according to a third embodiment of the present invention.
FIG. 15 is an explanatory view illustrating a gold wheel with a sensor according to a fourth embodiment of the present invention.
FIG. 16 is an explanatory view illustrating a gold wheel with a sensor according to a fifth embodiment of the present invention.
FIG. 17 is an explanatory view illustrating a gold wheel with a sensor according to a sixth embodiment of the present invention.
FIG. 18 is an explanatory view illustrating a gold wheel with a sensor according to a sixth embodiment of the present invention.
FIG. 19 is an explanatory diagram for explaining the hanging of the overhead wire that occurs in the overhead wire laying method using the anti-back metal wheel.
[Explanation of symbols]
1 outer frame
1a Steel plate
1b, 1c Cylindrical support
1d bolt
1e U-shaped bracket
1f nut
1g hole
2,3 Roller frame
2a, 3a Shaft support
2b, 3b screwing part
4, 5 rollers
6,7 Elastic rubber part
8,9 Rotating cam
10 Gold wheel arm mounting part
10a Mounting body
10b rod
10c Screwing part
11,12 Guide roller
13, 14
13a, 14a Support frame
13b, 14b Prop
13c, 14c 1st transmission part
13d, 14d driven roller
13e, 14e 2nd transmission part
13f, 14f Link member
13g, 14g Prop
20, 21 Sensor part
20a, 21a detection switch
20b, 21b Distance sensor
20c, 21c driven member
20d, 21d LED
20e, 21e photodiode
20f, 21f spring
20g, 21g Lid member
22, 23 Calculation drive controller
24, 25 Solenoid
30, 31 overhead wire follower
30a, 31a driven member
30b, 31b Brake wire
30c, 31c Rotation transmission member
40, 41 sliding piece
42,43 Restraint member
44, 45 Elastic member
50, 51 Rotation speed detector
52, 53 Operation drive control unit
54,55 Solenoid
61, 62 Bounce-up member for detection interruption
63, 64 spring
65, 66 rope
100 gold wheel with sensor
200 anti-back gold wheel
300 Utility pole
400 Mounting bracket
400a, 400b gold wheel arm
400c claw
500 Belt bracket

Claims (9)

At least a pair of rollers that rotate following the extended overhead wire;
A receiving member disposed between the pair of rollers in a state of having a gap apart from the extended wire;
It is pivotally supported by a rotating shaft provided at a position facing the receiving member across the overhead wire , and is formed to have a cam curve having a different radius from the rotating shaft. a rotary cam brakes Ru adapted to member facing receiving the cam surface,
An inclination detector that has a member that contacts the overhead wire outside the roller and detects the inclination of the overhead wire in response to the inclination of the overhead wire ;
A brake drive unit that rotates the brake cam according to the inclination detected by the inclination detection unit;
A gold wheel with a sensor comprising:
The brake rotating cam driven by the brake driving unit presses the overhead wire downward to cause the overhead wire to enter the gap between the receiving members, and the overhead wire is sandwiched between the receiving member and the brake rotating cam between the pair of rollers. In addition, a gold wheel with a sensor is characterized in that the movement of the overhead wire is stopped by press contact with the cam surface . In the money wheel with a sensor according to claim 1,
The inclination detection unit is integrally formed by a pair of link members that are substantially A-shaped flat plates and a plurality of struts that are passed between the pair of link members. A first transmission member is provided that is rotated about a support column, is provided with a driven roller at one end of a substantially A-shaped flat plate, and that rotates according to the inclination of the overhead line with which the driven roller abuts. ,
The brake drive unit is a pair of oval plates that are pivotally supported by the rotation shaft of the brake rotation cam, and the other end of the substantially A-shaped plate on one side of the pair of oval plates. parts are free fulcrum rotatably, a second transmission member rotates the cam brake is Ru is fixed to the other side of the pair of oval plate,
A brake wheel with a sensor, wherein the brake rotating cam rotates in accordance with the movement of the second transmission member. In the money wheel with a sensor according to claim 1,
The inclination detection unit is an overhead line driven device that is attached to an overhead line and has a driven member that moves up and down according to the inclination of the overhead line, and is suspended from a messenger wire that has been negotiated in advance.
The brake driving unit is pivotally supported by the rotary shaft of the rotary cam brakes, one brake wire is connected to, comprises a rotation transmitting member that rotates the cam brake is Ru is connected to the other end,
The movement of the driven member of the tilt detection unit is transmitted as the rotation of the rotation transmission member via the brake wire,
A brake wheel with a sensor, wherein the rotating cam for brake is rotated according to the rotation of a rotation transmitting member. At least a pair of rollers that rotate following the extended overhead wire;
A receiving member disposed between the pair of rollers in a state of having a gap apart from the extended wire;
Is supported by a rotating shaft provided at a position facing the receiving member across the overhead line is rotatably disposed, and the radius from the rotating shaft is formed to have different cam curves a rotary cam brakes Ru adapted to member facing receiving the cam surface,
It includes a pair of sensor units that output the upper limit position or lower limit position at a point of the overhead line outside the roller as an electrical detection signal, and when it is between the lower limit position and the upper limit position, the inclination is within the allowable range, and the lower limit position An inclination detector that detects as an unacceptable inclination when lower than or exceeds the upper limit position ,
An arithmetic drive control unit that determines whether one of the pair of sensor units of the tilt detection unit outputs a detection signal, and is driven according to an output from the arithmetic drive control unit. When the brake rotation cam includes a solenoid with which the plunger abuts and the sensor unit outputs a detection signal to detect an unacceptable inclination, the arithmetic drive control unit drives the solenoid to release the restriction of the brake rotation cam. A brake drive unit that is freely rotatable ,
A gold wheel with a sensor comprising:
Releasing the restraint of the rotation cam brake when the inclination detecting section inclined with respect to the horizontal direction of the overhead line is detected inclination der Rukoto of unacceptable, is driven to rotate the cam brake in the overhead wire, the rotating cam brake Rotate to increase the radius to narrow the passage of the overhead wire, and the brake rotating cam presses the overhead wire downward to cause the overhead wire to enter the gap between the receiving members, and the receiving member and brake rotation between the pair of rollers sensor with gold wheel which is pressed against by the write Mutotomoni cam surfaces sandwiching the overhead wire in the cam, characterized in that stopping the movement of the overhead line. At least a pair of rollers that rotate following the extended overhead wire;
A receiving member disposed between the pair of rollers in a state of having a gap apart from the extended wire;
It is pivotally supported by a rotating shaft provided at a position facing the receiving member across the overhead wire, and is formed to have a cam curve having a different radius from the rotating shaft. A rotating cam for braking, the cam surface of which is opposed to the receiving member;
A sliding piece that is in contact with the moving overhead wire and is driven in the extending direction; and an elastic member that is biased on both sides of the sliding piece to position the sliding piece at a predetermined position. A speed detector that roughly detects the wire drawing speed by replacing the moving piece;
A brake drive unit having a restraining member that releases the restraint of the rotating cam for braking when the sliding piece of the speed detection unit moves beyond a predetermined distance, and makes it freely rotatable;
A gold wheel with a sensor comprising:
When the sliding piece moves beyond the predetermined distance by the speed detector, the restraint of the brake rotating cam is released, the brake rotating cam is driven by an overhead wire, and the radius of the brake rotating cam is increased. Then, the passage of the overhead wire is narrowed, the brake rotating cam presses the overhead wire downward to insert the overhead wire into the gap of the receiving member, and the overhead wire is sandwiched between the receiving member and the brake rotating cam between the pair of rollers and the cam A gold wheel with a sensor, characterized in that the movement of the overhead wire is stopped by pressing on the surface . In the money wheel with a sensor according to claim 5,
Protrusively provided on the side surface of the brake rotating cam, and includes a pin that comes into contact with the sliding piece of the speed detection unit ,
Pin when the sliding piece of the speed detection unit has moved beyond a predetermined distance is disengaged from the sliding piece sensor with gold wheel, wherein to Rukoto rotatably to release the restraint of the rotation cam brake . At least a pair of rollers that rotate following the extended overhead wire;
A receiving member disposed between the pair of rollers in a state of having a gap apart from the extended wire;
It is pivotally supported by a rotating shaft provided at a position facing the receiving member across the overhead wire, and is formed to have a cam curve having a different radius from the rotating shaft. A rotating cam for braking, the cam surface of which is opposed to the receiving member;
When it is detected that the rotation speed detection unit for detecting the rotation speed of the roller and the rotation speed output by the rotation speed detection unit are converted into the drawing speed of the overhead wire and the drawing speed exceeds a predetermined value A speed detection unit having an arithmetic drive control unit that outputs a stop signal to
A brake drive unit that includes a solenoid that a plunger abuts on the brake rotation cam in a normal state and releases the restraint of the brake rotation cam in response to a stop signal;
A gold wheel with a sensor comprising:
Extending linear velocity releases the restraint of the rotation cams brake when it is detected that exceeds a predetermined value by the speed detection unit, it is driven to rotate the cam brake in overhead wire, to increase the radius of the rotating cam brake The brake rotating cam presses the overhead wire downward to cause the overhead wire to enter the gap between the receiving members, and the overhead wire is moved between the receiving member and the brake rotating cam between the pair of rollers. A gold wheel with a sensor, characterized in that the movement of the overhead wire is stopped by being sandwiched and pressed on the cam surface . In the money wheel with a sensor according to any one of claims 1 to 7 ,
A sensor-equipped gold wheel, wherein at least two or more gold wheels with sensors are arranged side by side, and a plurality of overhead wires are arranged and extended . In the money wheel with a sensor according to claim 8 ,
A sensor-equipped gold wheel , wherein at least two or more sensor-equipped gold wheels have different roller widths, and a plurality of overhead wires having different diameters are arranged side by side .

Images