JPH06123627A - Moving target for rail measuring device - Google Patents

Abstract

PURPOSE:To enhance the safety of rail measuring work. CONSTITUTION:The moving target 10 for a rail measuring device is equipped with a moving base 11 and the reflecting plate 31 provided on the moving base 11 so as to be tiltable in the up-and-down and left-and-right directions. The moving base 11 has a function of moving so as to follow the displacements of one rail in the up-and-down and left-and-right directions and the reflecting plate 31 has a retroreflective function and a center display function.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving target for a rail measuring device using a three-dimensional measuring device, and particularly to moving a rail measuring device suitable for measuring a rail installed at a high place represented by a crane rail. Regarding the target.

[0002]

2. Description of the Related Art First, the rail measurement referred to in the present invention means measuring the vertical displacement amount and the horizontal displacement amount of the rail. Specifically, the bending displacement of the rail upper face and the bending of the rail side face are measured. Refers to measuring displacement.

A conventional rail measuring method will be described with reference to FIG. FIG. 5 is an external perspective view for explaining the rail measuring method. FIG. 5A shows the undulation displacement, FIG. 5B shows the height difference and the gradient displacement, and FIG. 5C shows the span displacement. There is.

The swell displacement measurement is performed as follows. That is, as shown in FIG. 5 (A), a piano wire P is temporarily installed on the side surface of the rail R, and tension is applied so that the distance L ₀ between the rail R and the piano wire P becomes equal on both sides of the rail R. Then, the distance between the piano wire P and the rail R is sequentially measured to obtain measurement distances L ₁ , L ₂ ... L _N. The waviness displacement is (L ₁ −L ₀ ) ... (L _N −L ₀ ).

[0005] two rails R _1, and height difference in the vertical direction of R ₂ displacement, for vertical gradients displacement of one of the rails, as shown in FIG. 5 (B), the rail R _1, R ₂ The transit T is installed horizontally in the vicinity, and the scale of the measuring rod B placed on the rails R ₁ and R ₂ is read, and G ₁ , G ₂ ,
Read G ₃ . The scale difference (G ₁ -G ₂ ) between the _two rails R ₁ and R ₂ is the height difference displacement, and one rail R ₂
The scale difference (G ₁ -G ₃₎ are gradient displacement.

Regarding the span displacement between the _two rails R ₁ and R ₂ , as shown in FIG. 5C, the rails R ₁ and R _{2 are}
Measure the distance between them with a tape measure. If the specified span is S ₀ and the measured values are S ₁ , S _2, ..., (S ₁ −S ₀ ), (S
_2- S ₀ ) is the span displacement.

[0007]

However, since all the conventional rail displacement measuring methods are artificial, they lack measurement reliability, and require at least several measurers, and there are three types. You have to change the setup. Therefore, the number of man-hours required for measurement increases. In addition, there is a problem that high-risk rails such as overhead cranes are highly dangerous.

The present invention was devised in view of the above circumstances, and enables the rail measurement to be performed without the worker walking on the runway at a high place for the rail measurement, thereby improving the safety of the rail measurement work. An object of the present invention is to provide a moving target for such a rail measuring device.

[0009]

A moving target for a rail measuring apparatus according to the present invention is a three-dimensional measuring instrument for calculating the position of the target by irradiating the target with laser light and receiving reflected light that recurs. A moving target for the rail measuring device used, comprising a moving base and a reflector provided on the moving base so as to be tiltable in the up-down direction and the left-right direction, and the moving base comprises one The rail has a moving function of following the vertical displacement and the horizontal displacement of the rail, and the reflector has a retroreflection function and a center display function.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to the drawings. 1 is a side view of a moving target for a rail measuring apparatus according to this embodiment, FIG. 2 is a plan view of a moving target for this rail measuring apparatus, FIG. 3 is a sectional front view taken along the line AA of FIG. FIG. 4 is an external perspective view illustrating a usage state of a moving target for a rail measuring device.

The rail measuring device is a three-dimensional measuring device 1 (see FIG.
Reference) and a moving target 10. The three-dimensional measuring device 1 uses a laser beam to move a target to be measured.
A function of irradiating the center O of 10 and detecting recursive reflected light LB to detect the distance and angle between the three-dimensional measuring device 1 and the center O of the moving target 10 and calculate the three-dimensional coordinates of the center O. Is to have.

The moving target 10 comprises a moving base 11 and a reflecting plate 31 provided on the moving base 11 so as to be tiltable in the vertical direction and the horizontal direction.

The moving base 11 has a substantially rectangular shape and is formed of a synthetic resin or a non-magnetic material into a box shape. A plurality (two in the illustrated example) of permanent magnets 12 are embedded on the lower surface of the moving base 11 along the longitudinal axis of the moving base 11, and the permanent magnets 12 are magnets such as rails existing below. It is arranged to suck the body.

Further, a magnet holding plate 14 is attached to one side surface (front side surface in the illustrated example) of the moving base 11, and a plurality of magnet holding plates 14 face the permanent magnets 12 (see FIG. In the example shown, two permanent magnets 13 are attached. The permanent magnet 13 is arranged so as to attract a magnetic body such as a rail that exists laterally.

Further, guide plates 15 are attached to the front and rear ends of the moving base 11 so as to project therefrom.
Guide rollers with the vertical axis as the axis of rotation on each guide plate 15.
16 is rotatably fixed to the same side as the permanent magnet 13.
Furthermore, wheels 17 and 18 are attached to the front and rear portions of the moving base 11. The rotating shafts 17A and 18A of the wheels 17 and 18 are horizontally provided on the moving base 11. Then, as shown in FIG. 2, one rotation shaft 17A advances clockwise by a small angle α with respect to an axis 17B orthogonal to the longitudinal direction of the moving base 11, and the other rotation shaft 18A becomes an axis 18B conforming to the above. It is arranged so as to be delayed by a small angle α in the counterclockwise direction.

A guide wheel holding plate 19 is provided on the side of the movable base 11 opposite to the guide roller 16. The guide wheel holding plate 19 has a rectangular shape, and has a holding portion 19A that abuts a side surface of the moving base 11, and a fixing portion 19B that is L-shaped in a front view and that holds the holding portion 19A to the moving base 11.
Has become A guide wheel 20 having a vertical axis as a rotation axis is rotatably fixed near both sides of the holding portion 19A. The rotating shaft 17 is attached to the fixed portion 19B.
A long hole 19C is formed in a direction substantially parallel to A and 18A, and the guide wheel mounting plate 19 is fixed to the moving base 11 by a bolt nut 21 inserted therethrough. The long hole 19C
Is for adjusting the position of the guide wheel 20 according to the dimensional difference of the rail R.

The permanent magnets 12, 13 and the guide roller 1 described above
6, base moved by wheels 17, 18, guide wheel 20 1
1 can move in the vertical and horizontal directions of one rail R.

The reflection plate 31 has a retroreflection function and a center display function, and the center O of the target is displayed at the center. The reflecting plate 31 has a Y axis passing through the center O fixed to a holding frame 32 formed in a U shape in a front view,
The holding frame 32 is fixed so as to be rotatable in the vertical direction v about the Y axis.

The holding frame 32 has a reflecting plate 31 on the moving base 11.
Is rotatably fixed in the left-right direction u with the X axis as the center of rotation. Then, the holding frame 32 is driven manually or by a driving means (not shown) to move the reflection plate 31 in the vertical direction v and the horizontal direction u.
It is configured to be tilted over a desired angle.

Next, the operation of the moving target 10 will be described. When the moving target 10 is placed on the rail R,
The moving target 10 receives an attraction force between the moving target 10 and the rail upper surface due to the magnetic force of the permanent magnet 12, and the wheels 17 and 18 keep the distance H between the rail upper surface and the center O of the reflecting plate 31 constant and the rail upper surface is not shown. The driving means stably moves in accordance with the following.

At the same time, due to the magnetic force of the permanent magnet 13, an attraction force is applied between the permanent magnet 13 and one side surface of the rail, and the guide roller 16 rotates while constantly contacting one side surface of the rail. Then, the distance W between the center C of the rail R and the center O of the reflector 31 is always kept constant and stably moves along the side surface of the rail.

Further, the rotating shafts 17A, 18A of the wheels 17, 18
Is adjusted so as to have an arc-shaped minute angle α having the center on the opposite side of the permanent magnet 13 as described above. Therefore, at the time of movement, the movement base 11 moves toward the center of the arc, so that the guide roller 16 also contacts one side surface of the rail and more stably follows the movement.

The guide foil 20 is simply a moving base 11
Acts only as a guide when the side shakes, and normally does not contact the rail R.

As an example of the driving means of the moving target 10, as shown in FIG. 4, when the crane 2 is towed, the rope 3 through which the hook 22 provided at the end of the moving base 11 is inserted is attached to the crane saddle 4. Connect to.

Next, a rail measuring method using the moving target 10 will be described. The three-dimensional measuring instrument 1 is installed at the end of the rail to be measured. The moving target 10 is towed and moved by the crane 2 and stopped at the measuring point. Three-dimensional measuring instrument 1
Thus, the center O of the reflector 31 at this measurement point is measured as a three-dimensional coordinate. Similarly, three-dimensional coordinates at a plurality of points are sequentially measured.

As described above, the distance H between the upper surface of the rail and the center O of the reflection plate 31 and the distance W between the center P of the rail R and the center O are constant, so that the vertical and horizontal directions at a plurality of measurement points are measured. The amount of displacement is the same as the amount of displacement of the rail R itself vertically and horizontally. Therefore, the swell displacement is calculated by the horizontal displacement amount of one rail R, the span displacement is calculated by the horizontal displacement amount of two rails, and the gradient displacement is calculated by the vertical displacement of one rail R. The height difference displacement is calculated from the displacement.

When the movable target 10 is of a self-propelled type, one of the wheels 17 and 18 may be electrically driven to be a driving wheel. Further, by mounting a battery (not shown), a radio receiver for operation, etc. on the moving base 11, the moving target 10 can be moved remotely to the desired measuring point from the ground, and the rail measuring operation can be automated.

[0028]

A moving target for a rail measuring device according to the present invention comprises a moving base and a reflector provided on the moving base so as to be vertically and horizontally tiltable.
The moving base has a function of moving in accordance with vertical displacement and horizontal displacement of one rail, and the reflector has a retroreflection function and a center display function. And when measuring the high-altitude rail using this moving target,
By moving the moving target by towing with a crane or moving by a self-propelled type, the worker does not have to walk on the highway. Therefore, it is possible to increase the safety of the measurement work and simplify the rail measurement work.
There is an advantage that the measurement time can be shortened and the work efficiency can be improved. Further, there is an advantage that the measurement accuracy is high.

[Brief description of drawings]

FIG. 1 is a side view of a moving target for a rail measuring device according to this embodiment.

FIG. 2 is a plan view of a moving target for this rail measuring device.

FIG. 3 is a sectional front view taken along the line AA of FIG.

FIG. 4 is an external perspective view illustrating a usage state of a moving target for a rail measuring device.

FIG. 5 is an external perspective view illustrating a rail measuring method according to a conventional technique, in which FIG. 5A shows undulation displacement and FIG.
Shows height difference and gradient displacement, and FIG. 7C shows span displacement.

[Explanation of symbols]

 1 3D measuring instrument 2 Crane 10 Moving target 11 Moving base 12, 13 Permanent magnet 16 Guide roller 17, 18 Wheel 20 Guide wheel 31 Reflector

Claims (1)

[Claims] 1. The position of the target is calculated by irradiating the target with laser light and receiving reflected light that recurs.
A moving target for a rail measuring device using a three-dimensional measuring instrument, comprising a moving base and a reflecting plate provided on the moving base so as to be tiltable in the vertical direction and the horizontal direction, and the moving base. Has a moving function of following one vertical displacement and one horizontal displacement of the rail, and the reflector has a retroreflective function and a center display function. Moving target for measuring equipment.