JP2008032425A - Device for measuring chain tension - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for measuring chain tension capable of measuring the chain tension, irrespective of the distance from the wall of the escalator to the chain. <P>SOLUTION: The chain tension measurement device for measuring the tension of the chain 1, while pressing the device to a chain 1 engaged between the sprockets comprises the measurement device body 2 having a pressure scale 2a along one direction; a scale body 3 with a positional scale 3a provided, while extending in a vertical direction to the above mentioned one direction to the measurement device body 2; and the leaf spring 4, one end of which is fixed on the measurement body 2 and the other end is sliding on the pressing force scale 2a and the mid point is bending opposite direction to the measurement device body 2. Thus, when the other end of the leaf spring 4 is moved to the reference value of the pressing force scale 2a, while pressing the chain 1 with the leaf spring 4, from the movement distance of mark 6 of the wall 5 measured by using the scale body 3, deformation amount of the chain 1 is measured and then the tension of the chain 1 is measured. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a chain tension measuring device capable of calculating the chain tension by measuring the magnitude of the applied force and the amount of deformation of the chain by pressing against the chain and deforming the chain.

  As a conventional chain tension measuring device, a tension gauge body, a push / pull operation body extended from the tension gauge body, and an operation force display section for displaying a push operation force and a pull operation force applied to the push / pull operation body And a graduation body provided on the push-pull operation body, having a scale along the push-pull direction, and provided on the wall of the escalator, when the chain is moved in one direction, being pushed by the chain and moving. What is provided with the indicator which instruct | indicates the movement distance of a chain to the said scale body is known (for example, refer patent document 1).

Japanese Utility Model Publication No. 2000-155060

  However, in this case, one end of the indicator is attached to the escalator wall and the other end is brought into contact with the chain. There was a problem of having to prepare the pointing tool.

  An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a chain tension measuring device capable of measuring the tension of the chain regardless of the distance from the wall of the escalator to the chain. It is to provide.

  The chain tension measuring device according to the present invention is a chain tension measuring device that presses against a chain hung between sprockets and measures the tension of the chain. The measuring device main body has a pressing force measuring scale along one direction. And a scale body extending in the other direction perpendicular to the one direction on the measuring device main body and having a scale for position measurement along the other direction, one end portion being fixed to the measuring device main body, and the like An end portion slides on the force measuring scale, an intermediate portion includes a leaf spring that is convex toward the counter-measurement device main body, and a reference point is provided on the wall near the chain using the scale body. Measuring the position of the reference point in the other direction, pressing the intermediate portion of the leaf spring against the chain, the leaf spring is bent and deformed by the reaction of the force from the chain, Board Measuring the amount of deformation of the chain by measuring the movement distance of the reference point in the other direction relative to the scale body when the other end of the mesh moves to the reference value on the scale for measuring the pressing force Thus, the tension of the chain can be measured.

  According to the chain tension measuring device of the present invention, the chain tension can be measured regardless of the distance from the wall to the chain.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding members and parts will be described with the same reference numerals.
Embodiment 1 FIG.
FIG. 1 is a front view of a chain tension measuring device according to Embodiment 1 of the present invention, and FIG. 2 is a side view when viewed from the direction A in FIG.
The chain tension measuring apparatus according to the first embodiment measures the tension of the chain 1 for driving the escalator.
The chain tension measuring device includes a measuring device main body 2 having a pressing force scale 2a which is a pressing force measuring scale along one direction.
The measuring device body 2 is provided with a scale body 3 that extends in another direction perpendicular to one direction of the measuring device body 2 and has a position scale 3a that is a position measurement scale along the other direction.
On the anti-scale body 3 side of the measuring apparatus main body 2, a fixed portion 4a fixed to the measuring apparatus main body 2 at one end, and a slide that can slide on the pressing force scale 2a of the measuring apparatus main body 2 at the other end. A leaf spring 4 having a portion 4b and a convex portion 4c having a convex shape in the direction of the anti-scale body 3 of the measuring apparatus main body 2 is provided at the intermediate portion.

  When the projection 4c of the leaf spring 4 is pressed against the chain 1 hung between the sprockets, the leaf spring 4 is bent and deformed by the reaction of the force from the chain 1, and the sliding portion 4b of the leaf spring 4 is measured. The amount of force acting on the leaf spring 4 is measured by moving on the pushing force scale 2a of the device body 2 and the position on the pushing force scale 2a of the measuring device body 2 indicated by the sliding portion 4b of the leaf spring 4. can do.

Next, a procedure for measuring the tension of the chain 1 using the chain tension measuring device according to the first embodiment will be described.
First, a mark 6 as a reference point is attached to the escalator wall 5 near the chain 1.
Next, the chain tension measuring device is arranged so that the leaf spring 4 comes into contact with the chain 1 for measuring the tension, and as shown in FIG. The position of the mark 6 is measured using 3a.
Next, with the position of the eye of the measurer fixed, the chain tension measuring device is pressed against the chain 1 side, and the sliding portion 4b of the leaf spring 4 becomes the reference value on the pressing force scale 2a of the measuring device body 2. Increase power until it reaches.
When the sliding portion 4b of the leaf spring 4 reaches a reference value on the pressing force scale 2a of the measuring device body 2, the position of the mark 6 is measured using the position scale 3a of the scale body 3, and the position of the mark 6 is measured. Measure the amount of change.

The amount of change in the position of the mark 6 with respect to the scale body 3 is the sum of the amount of deformation of the chain 1 and the amount of deflection of the leaf spring 4, and therefore the leaf spring 4 when the force of the reference value is applied to the leaf spring 4. By determining the amount of deflection in advance, the amount of deformation of the chain 1 is measured.
As described above, the deformation amount of the chain 1 is measured, and the tension of the chain 1 is calculated from the deformation amount of the chain 1 and the magnitude of the force that is the reference value.

  As described above, according to the chain tension measuring device according to the first embodiment, the position of the mark 6 provided on the wall 5 of the escalator near the chain 1 measured by the measurer using the position scale 3a of the scale body 3 is measured. Since the amount of deformation of the chain 1 is measured from the amount of change, the tension of the chain 1 can be measured regardless of the distance between the wall 5 and the chain 1.

  Moreover, since the magnitude | size of the force applied to the chain 1 is measured using the leaf | plate spring 4, a chain tension measuring apparatus can be comprised easily and the whole apparatus can be made compact.

Embodiment 2. FIG.
FIG. 3 is a front view of the chain tension measuring device according to the second embodiment.
In the second embodiment, the scale body 3 is provided on the measuring device main body 2 side of the convex portion 4 c of the leaf spring 4 so as to extend in the other direction perpendicular to one direction of the measuring device main body 2.
In this case, the scale body 3 moves with the deformation of the leaf spring 4, and the change amount of the position of the mark 6 with respect to the scale body 3 coincides with the change amount of the chain 1.
Other configurations are the same as those of the first embodiment.

  According to the chain tension measuring device according to the second embodiment, in addition to the effects of the first embodiment, it is not necessary to consider the amount of bending of the leaf spring 4, and the chain 1 is determined from the amount of change in the position of the mark 6 with respect to the scale body 3. Can be directly measured.

  In each of the above embodiments, the chain tension measuring device is used to measure the tension of the escalator driving chain 1. However, the present invention is not limited to this. For example, the tension of the handrail driving chain is described. Can also be measured.

  In each of the above embodiments, the magnitude of the force applied to the chain 1 is used as a reference value, the deformation amount of the chain 1 at that time is measured, and the tension of the chain 1 is calculated. The tension of the chain 1 may be calculated by measuring the magnitude of the force applied to the chain 1 at that time, using the deformation amount of the chain 1 as a reference value.

1 is a front view of a chain tension measuring device according to Embodiment 1. FIG. It is a side view when it sees from the A direction of FIG. 6 is a front view of a chain tension measuring device according to Embodiment 2. FIG.

Explanation of symbols

  1 chain, 2 measuring device main body, 2a pressure scale, 3 scale body, 3a position scale, 4 leaf spring, 4a fixed part, 4b sliding part, 4c convex part, 5 wall, 6 mark.

Claims (2)

In a chain tension measuring device for measuring the tension of the chain by pressing against the chain hung between the sprockets,
A measuring device main body having a pressing force measurement scale along one direction;
A scale body extending in the other direction perpendicular to the one direction on the measuring device main body and having a scale for position measurement along the other direction;
One end is fixed to the measuring device main body, the other end is slid on the pressing force measuring scale, and the intermediate portion is provided with a convex leaf spring toward the counter-measuring device main body side,
Measure the position in the other direction of the reference point provided on the wall near the chain using the scale body,
The intermediate portion of the leaf spring is pressed against the chain, and the leaf spring is bent and deformed by the reaction of the force from the chain, and the other end portion of the leaf spring is on the pressing force measuring scale. Measuring the amount of deformation of the chain by measuring the movement distance of the reference point in the other direction with respect to the scale body, and measuring the tension of the chain. Chain tension measuring device. In the chain tension measuring device for measuring the chain tension by pressing against the middle part of the chain hung between the sprockets,
A measuring device main body having a pressing force measurement scale along one direction;
One end portion is fixed to the measuring device main body, the other end portion slides on the pressing force measuring scale, and the intermediate portion is a convex leaf spring toward the counter measuring device main body side,
A scale body extending in the other direction perpendicular to the one direction at the intermediate portion of the leaf spring, and having a scale for position measurement along the other direction;
Measure the position in the other direction of the reference point provided on the wall near the chain using the scale body,
The intermediate portion of the leaf spring is pressed against the chain, and the leaf spring is bent and deformed by the reaction of the force from the chain, and the other end portion of the leaf spring is on the pressing force measuring scale. Measuring the amount of deformation of the chain by measuring the movement distance of the reference point in the other direction with respect to the scale body, and measuring the tension of the chain. Chain tension measuring device.

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