JP3065717B2 - Trolley wire wear meter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley wire wear amount measuring instrument for measuring a trolley wire wear amount.

[0002]

2. Description of the Related Art A trolley wire such as a train wire gradually wears as the current collecting shoe slides. If the amount of wear reaches 50% of the outer diameter of the trolley wire, there is a risk of disconnection. It needs to be replaced to prevent disconnection accidents. Therefore, it was necessary to measure the amount of wear on the sliding surface of the trolley wire.

[0003] However, this type of conventional measuring device includes a non-contact type sensor for detecting a wear displacement of a sliding surface of a trolley wire,
In addition to being held by the holding member, the holding member is attached to the tip of the support rod, and a roller is attached to the holding member. When measuring, the roller was placed on a trolley wire, and the measuring instrument was run along the trolley wire.

[0004]

Therefore, in the above-mentioned conventional measuring device, the roller cannot be rolled in the portion where the ears are fitted in the left and right ear grooves of the trolley wire. Measurement of the site cannot be performed,
The roller could not be smoothly rolled at the bent portion of the trolley wire, and accurate measurement could not be performed at the bent portion.

Accordingly, an object of the present invention is to provide a trolley wire wear amount measuring instrument capable of accurately detecting the wear displacement of the sliding surface of the trolley wire over the entire length of the trolley wire.

[0006]

In order to achieve the above object, a trolley wire wear meter according to the present invention has a non-contact type sensor for detecting a wear displacement of a sliding surface of a trolley wire. A measuring device provided with a main body, a trolley wire holding portion having a pair of holding rollers that approach and separate from each other and are removably fitted into a pair of left and right ear grooves of the trolley wire,
Three of the measuring device main bodies are disposed along the longitudinal direction at an interval longer than the width of the ear, and between the holding rollers of each trolley wire holding portion, a biasing force is applied in a direction in which the holding rollers approach each other. And a resilient member that allows the ear to penetrate between the nipping rollers is interposed. Further, two reference rollers rotatably supported around the horizontal axis by the measuring instrument main body are connected to a trolley wire. in contact from below, between the trolley wire holding portions, respectively, and arranged in the instrument body
Hold the attached gripping rod and press the measuring instrument body
As a result, the ear is raised against the elasticity of the elastic member.
Penetrates between the holding rollers and the trolley wire holding section
It is configured so that it can pass through

[0007]

The gripping roller of each trolley wire holding portion is fitted in the ear groove, and in that state, the amount of wear on the sliding surface of the trolley wire can be measured with a non-contact type sensor. Is not displaced.

When measuring, the measuring instrument is run along the trolley wire with the holding roller fitted in the ear groove. When this measuring instrument approaches the ear-corresponding part, first, The holding rollers of the front trolley wire holding portion can be separated from each other to pass through the corresponding portion of the ear. In this case, the holding rollers of the middle and rear trolley wire holding portions are fitted in the ear grooves. . Further, the measuring device is run, and after the ear passes between the front clamping rollers, the front clamping rollers are brought closer to each other, the clamping rollers are fitted into the ear grooves, and the measuring device is further moved in this state. Then, when the trolley wire reaches the middle trolley wire holding portion, the holding rollers of the middle holding portion are separated from each other to pass the ear. In this case, the holding rollers of the front and rear trolley wire holding portions are fitted in the ear grooves. Further, the measuring device is run, and after passing between the intermediate holding rollers, the intermediate holding rollers are brought closer to each other, and the holding rollers are fitted into the ear grooves. When approaching the trolley wire holding portion, the holding rollers of the rear holding portion are separated from each other to pass through the ear. In this case, the holding rollers of the middle and front trolley wire holding portions are fitted in the ear grooves.

Therefore, when this measuring instrument is run along the trolley wire, the trolley wire is clamped by at least two trolley wire clamping portions.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

1 to 3 show a trolley wire wear measuring device according to the present invention. The measuring device has a non-contact type sensor 2 for detecting a wear displacement of a sliding surface X of a trolley wire 1. A main body 3 is provided, and a gripping bar 4 is attached to the main body 3.

The measuring instrument main body 3 comprises a first member 5 provided with the gripping bar 4 and a second member 6 connected to the first member 5 so as to be swingable. Line holding portions 7, 7, 7 and reference rollers 8, 9 are provided.

The reference roller 8 attached to the first member 5 is
A body 10 and flanges 11 and 11 provided at both ends of the body 10 are provided.
13 is rotatably supported by left and right holding pieces 14, 14, and the shaft 15 of the holding body 13 is rotatably supported via a bearing 16 provided on the first member 5. 5 is pivoted.

Accordingly, the reference roller 8 can rotate about the axis Oa as shown by the arrow in FIG. 2, and the trolley wire 1 is fitted into the concave circumferential groove 24 provided at the center thereof. . That is, the reference roller 8 comes into contact with the left and right curved surfaces 25, 25 (see FIG. 3) of the trolley wire 1 and rolls along the trolley wire 1.

The reference roller 9 attached to the second member 6 has a body 10 and a flange like the reference roller 8 of the first member 5.
Protruding shafts 12, 12 protruding from the flanges 11, 11
Are rotatably supported by the second member 6.

Here, the second member 6 includes a pivot portion 18 rotatably connected to the first member 5 via a bearing portion 17, a mounting frame 19 attached to the pivot portion 18, And a block 20 connected to the mounting frame 19.
19 includes a pair of side walls 21, 21 and a connecting wall 22 connecting the rear ends of the side walls 21, 21.
23, 23 are protruding. Then, the holding pieces 23, 23
The projecting shafts 12, 12 of the reference roller 9 are rotatably supported on the shaft.

Accordingly, the reference roller 9 rotates about the axis Ob, and simultaneously rotates the left and right curved surfaces 25, 25 of the trolley wire 1.
25, and rolls along the trolley wire 1.

The above-mentioned non-contact type sensor 2 and a measuring sensor 26 for measuring the distance traveled are attached to the mounting frame 19 of the second member 6. That is, the front reference roller 9 is provided with a plurality of bars 27 at a predetermined pitch along the circumferential direction on the outer peripheral side of the body portion 10, and the measurement sensor 26 measures the bars 27. , The distance the reference roller 9 has traveled.

Next, as shown in FIG. 1, two trolley wire holding portions 7 are provided on the first member 5 and one on the second member 6, respectively. A pair of holding rollers 29, 29 are provided so as to be removably fitted into a pair of left and right ear grooves 28, 28.

As shown in FIG. 5, the holding roller 29 has an inner member 31 having a threaded portion 30 formed on the outer peripheral surface thereof, and an outer member 32 fitted to the threaded portion 30 of the inner member 31. , Is provided. The outer member 32 has a triangular cross section on the outer peripheral surface.
A short cylindrical body 35 having a screw part 34 screwed to the screw part 30 on the inner peripheral surface thereof, and a base end part 36 provided continuously with a base end of the short cylindrical body 35; The base end portion 36 is a tapered surface whose outer peripheral surface is gradually reduced toward the base end side, and a bearing 38 is fitted on the inner peripheral surface 37. A shaft 39 is inserted into the bearing 38, and a retaining member is attached to a threaded portion at the tip of the shaft 39.
40 is screwed. The retaining member 40 is an inner member.
31 is formed inside the recess 41 on the base end face,
A spacer 42 is interposed between 40 and the bearing 38. Reference numeral 43 denotes a flange provided on the shaft 39, which receives the bearing 38; and 44, a bearing interposed between the inner surface of the inner member 31 and the inner surface of the base end of the outer member 32.
It is a spacer that also serves as a fixing for 38.

Therefore, each of the holding rollers 29 is rotated about the axis of the shaft 39, and the protrusion 33 is fitted into the ear groove 28 of the trolley wire 1.

At the base ends of the shafts 39,.
The swinging pieces 45 are swingably attached to the measuring instrument body 3.

Specifically, the swinging piece 45 of the front holding portion 7
Are pivot pieces 46, 46 provided on the block 20 of the second member 6.
In between, the protrusion 47 is inserted, and the protrusion 47 is pivotally supported by the pivot pieces 46, 46 via the pivot shaft 48.

The swinging piece 45 of the intermediate holding portion 7 is
The protrusion 47 is inserted between the pivot pieces 49, 49 provided at the front end of the member 5, and the projection 47 is pivotally supported by the pivot pieces 49, 49 via the pivot shaft 50. .

Further, the projecting portion 47 of the swinging piece 45 of the rear holding portion 7 is inserted between pivoting pieces 51, 51 provided at the rear end of the first member 5, and a pivoting shaft 52 is provided. The protruding portion 47 is pivotally supported by the pivot pieces 51, 51 via.

Therefore, as shown in FIG.
5, 45 swing around the axes 48, 48 as shown by arrows A and B,
The middle swinging pieces 45, 45 swing about the axes 50, 50 as indicated by arrows C and D, and the rear swinging piece 45 swings about the axes 52, 52 as arrows E,
Swings like F.

A resilient member 55 is provided between the shafts 39 of each of the holding portions 7. That is, the resilient member 55 is formed of a coil spring, and the hook portions at both ends are formed in the concave circumferential grooves 56,
56 is engaged.

As shown in FIG. 1, the spacing between the holding portions 7 is longer than the width W of the ear 57.

Next, the non-contact sensor 2 comprises, for example, an optical displacement sensor, and as shown in FIG. 12, a light emitting diode 70, a light transmitting lens 71, a light receiving lens 72, and a light position detecting element ( Semiconductor) 73, etc., and irradiates the light of the light emitting diode 70 to the sliding surface (wear surface) X of the trolley wire 1 through the light transmitting lens 71, and reflects the reflected light by the light receiving lens 72 to the light position detecting element. An image is formed as a spot on the spot 73, and the amount of change in the spot position that changes due to the displacement of the light reflecting surface (wear displacement of the trolley wire 1) is extracted as an electric quantity output of the light position detecting element 73. In FIG. 3, reference numeral 74 denotes a connection connector of the measurement sensor 26, and reference numeral 75 denotes a connection connector of the non-contact sensor 2.

Next, a method for measuring the wear displacement of the sliding surface X of the trolley wire 1 by using the measuring instrument configured as described above will be described.

The holding rollers 29 of each trolley wire holding section 7.
Are separated from each other against the resilient force of the resilient member 55, and the trolley wire 1 is interposed between the holding rollers 29, 29. In this state, the pressing of the rollers 29, 29 in the separating direction is performed. Then, as shown in FIG. 6, the projections 33, 33 of the rollers 29, 29 are fitted into the ear grooves 28, 28 of the trolley wire 1.

That is, in this state, the dimensions from the non-contact type sensor 2 to the ear grooves 28, 28 of the trolley wire 1 are constant. If the non-contact type sensor 2 measures the sliding surface X in this state, , The measurement will be accurate.

In this state, the user holds the grip bar 4 and
This measuring instrument can be moved along the longitudinal direction of the trolley wire 1, and the displacement of the sliding surface X at a desired position can be measured.

As shown in FIG. 8, when the measuring device travels as shown by the arrow and the front holding portion 7 reaches the ear 57, if the measuring device is further pressed in the direction of the arrow in this state, the measuring device shown in FIG. As shown in FIG. 9 and FIG.
And between the holding rollers 29, 29 against the resilience, the front holding portion 7 can pass through the ear 57.

In the state where the ear 57 corresponds to the front holding portion 7, the holding rollers 29 of the middle and rear holding portions 7 are fitted into the ear grooves 28 as shown in FIG.
In this state, when the measurement of the sliding surface X is performed by the non-contact sensor 2, there is no displacement of the measurement reference point of the sensor 2, and no error occurs in the measurement of the sliding surface X.

Then, when the measuring instrument is further pressed as shown by the arrow from the state shown in FIG. 9, the ear 57 is passed through the front holding portion 7, and as shown in FIG. , 29 indicate the resilience of the resilient member 55, as indicated by arrows B,
B, and the protrusions 33, 33 of the rollers 29, 29
8 and 28, and when the ear 57 reaches the middle holding portion 7, the ear 57 is moved to the position shown in FIGS.
As shown in FIG. In this case, each of the holding rollers 29 of the front and rear holding portions 7, 7 is fitted in the ear groove 28. In this state, the sliding surface X can be measured and the measurement can be performed accurately.

When the measuring instrument is further pressed in the direction of the arrow from the state shown in FIG. 10 and the ear 57 is passed through the intermediate holding portion 7, the holding rollers 29 The roller swings in the directions of arrows D and D shown in FIG.
The projections 33 of 29, 29 fit into the ear grooves 28, 28, and when the ear 57 reaches the rear holding portion 7, the ear 57 is moved to the position shown in FIGS. Nipping roller 2
Invade between 9, 29. In this case, the holding rollers 29 of the front and middle holding portions 7, 7 are fitted in the ear grooves 28, and in this state, the sliding surface X can be measured and the measurement can be performed accurately.

Thereafter, if the measuring instrument is further moved in the direction of the arrow, the ear 57 can pass through the rear holding portion 7.

Therefore, when the measuring instrument is caused to travel along the trolley wire 1, the trolley wire 1 can be clamped by at least the clamping rollers 29 of the two clamping portions 7, 7. The container is always mounted on the trolley wire 1 in a stable state, and the wear amount of the sliding surface X can be detected over the entire trolley wire 1.

However, according to the above-described embodiment, since the trolley wire 1 is received from below by the reference rollers 8 and 9,
The displacement measurement of the sliding surface X is more accurate, and the reference roller 8 swings about the axis Oa and the reference roller 9 swings about the axis Ob. Is curved in a plan view (usually curved), the measuring instrument can be caused to travel along the trolley wire 1 corresponding to the curvature.

It should be noted that the present invention is not limited to the above-described embodiment, and the design can be freely changed without departing from the gist of the present invention. For example, in the embodiment, the gripping rod 4 is provided on the lower surface side of the measuring instrument main body 3. Since it is provided at the rear end, the front end on the lower surface side of the measuring device main body 3 (specifically, the block 20 of the second member 6)
It is also possible to freely provide a sub-grip for supporting the main body 3, and to provide an operating mechanism for swinging the holding rollers 29, 29 of each holding portion 7 in a direction to separate them from each other.
It is free to provide. If this operating mechanism is provided, when each of the holding portions 7 passes through the ear 57, the holding rollers 29, 29 can be easily provided.
Can be separated from each other, and can easily pass through the ear 57. Of course, the arrangement pitch of the holding portions 7 is not limited to the example shown in the drawing, since the two holding portions 7, 7 may have a pitch that does not correspond to the ear 57 at the same time.

Although a laser displacement sensor is used in the embodiment as the non-contact sensor 2, an electromagnetic displacement sensor may be used.

[0043]

Since the present invention is configured as described above, the following effects can be obtained.

When measuring the amount of wear of the sliding surface X of the trolley wire 1, since the holding rollers 29, 29 of the trolley wire holding portion 7 are fitted into the ear grooves 28, 28, the non-contact type sensor is used. The displacement of the sliding surface X can be accurately detected without displacement of the second measurement reference point.

Further, the sliding surface X can be measured even when passing through the ear 57, and since the trolley wire 1 is clamped by at least two trolley wire clamping portions 7, 7, stable. In this state, highly accurate measurement can be performed.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a plan view showing one embodiment of the present invention.

FIG. 3 is a sectional side view showing one embodiment of the present invention.

FIG. 4 is a simplified diagram illustrating an operation.

FIG. 5 is an enlarged sectional view of a holding roller.

FIG. 6 is an enlarged view of a holding roller in a state fitted in an ear groove.

FIG. 7 is an enlarged view of a holding roller in an ear passing state.

FIG. 8 is a simplified plan view illustrating an operation.

FIG. 9 is a simplified plan view illustrating an operation.

FIG. 10 is a simplified plan view illustrating an operation.

FIG. 11 is a simplified plan view illustrating an operation.

FIG. 12 is a simplified diagram of a non-contact sensor.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 trolley wire 2 non-contact sensor 3 measuring device main body 4 gripping rod 7 trolley wire holding section 8 reference roller 9 reference roller 28 ear groove 29 holding roller 55 resilient member 57 ear W width

──────────────────────────────────────────────────続 き Continuing on the front page (72) Katsuharu Nakajima, 8, Nishinocho, Higashikojima, Amagasaki City, Hyogo Prefecture Inside Mitsubishi Cable Industries, Ltd. Ozaki Danchi 10-403 (56) References JP-A-53-34588 (JP, A) JP-A 64-21311 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01B 21/00-21/32

Claims (1)

(57) [Claims] 1. A measuring instrument comprising a measuring instrument main body having a non-contact type sensor for detecting a wear displacement of a sliding surface of a trolley wire, wherein the measuring instrument main body has a pair of left and right sides of the trolley wire approaching and separating from each other. Three trolley wire holding portions having a pair of holding rollers that are removably fitted in the ear grooves are provided in the measuring device main body along the longitudinal direction at intervals longer than the width of the ear. A resilient member is provided between the nipping rollers of the nipping portion, which resiliently urges the nipping rollers in a direction of approaching each other and allows the ear to enter between the nipping rollers. Two reference rollers rotatably supported about a horizontal axis are respectively disposed between the trolley wire holding portions so as to contact the trolley wire from below.
Then, grasp the holding rod attached to the measuring
By pressing the measuring instrument body, the ear
Penetrating between the pinching rollers against the elasticity of the member,
A trolley wire wear amount measuring device, wherein the trolley wire holding portion is configured to pass through the ear .