JPH0649912U - Chain wear measuring tool - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a chain wear measuring tool capable of accurately and easily measuring wear of a chain incorporated in an existing device. [Structure] A main body scale 4 is provided on a frame 10 having a vernier scale 2.
The slide bar 11 having the above is slidably fitted, and the insertion portion 11a is provided at the tip end in the longitudinal direction of the slide bar 11 with a gradually decreasing width.
The insertion direction of the chain 8 between the rollers 8a at the insertion portion 11a and the sliding direction of the frame body 10 and the slide bar 11 are aligned to form the frame body 10 and the slide bar 1
The stopper 7 for fixing 1 is separated from the chain 8.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wear measuring tool for measuring wear of a chain.

[0002]

[Prior art]

 As a conventional chain wear measuring tool, it is proposed in Japanese Utility Model Publication No. 1-62272 to use a caliper as shown in FIG. The caliper is configured so that the slide bar 3 having the main scale 4 is slidably fitted to the frame 1 having the vernier scale 2, and the space between the frame 1 and the slide bar 3 can be fixed by the stopper 7. The projection 5 is formed on the frame body 1, and the projection 6 is formed on the slide bar 3 so as to face the projection 5. Wearing the chain 8 composed of a large number of rollers 8a and a link plate 8b that rotatably connects the rollers 8a to each other uses this caliper to remove the projection 5 of the frame 1 and the projection 6 of the slide bar 3 together. The interval P is measured by inserting the rollers 8a to be measured which are adjacent to each other.

[0003]

[Problems to be solved by the device]

 Generally, the chain wears depending on the usage environment and usage condition, but since the wear varies with each roller 8a and is concentrated on a specific roller, the measurement between the rollers 8a is performed at all intervals. Must be targeted. For this reason, chain wear measurement requires not only the measurement accuracy but also the ease of operation. However, since the chain wear measurement work is performed while the chain is installed in an existing device such as an escalator, the work space is small, and both the projections 5 and 6 are inserted into the space P and the stopper 7 is used. Even if the frame 1 is fixed to the slide bar 3, the fingertip may not enter the stopper 7, which may make measurement difficult.

An object of the present invention is to provide a chain wear measuring tool capable of accurately and easily measuring wear of a chain incorporated in an existing device.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention comprises a frame body having a scale and a slide bar slidably fitted to the frame body having a scale having a relationship of the scale and the main scale. In the wear measuring tool of the chain, the slide bar is characterized in that an insert portion is formed at the tip of the slide bar in the sliding direction and the width of which is reduced in proportion to the tip direction.

[0006]

[Action]

 Since the chain wear measuring tool according to the present invention is configured as described above, the proportionally-decreasing insertion portion of the slide bar is inserted between the rollers until it stops, and the frame body is moved in the same insertion direction to contact the rollers. In this state, fix the frame to the slide bar with a stopper, read the measured value from the corresponding scale of the stopper and the main scale of the frame in a bright place, and grasp the wear state from the difference between the measured value and the reference value. You can In this way, the insertion direction of the slide bar's insertion part and the movement direction for contacting the frame with the roller are matched, so there is no need to bring the chain and the stopper close to each other as in the conventional case, and the frame can be moved with the stopper. The work of fixing to the slide bar can be easily performed.

[0007]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 2 and 3 are a front view and a sectional view of a chain wear measuring tool according to an embodiment of the present invention. The slide bar 11 has an insertion portion 11a having a proportionally reduced width at the tip in the longitudinal direction, and is slidably fitted in the longitudinal direction by a guide protrusion 10a provided inside the frame body 10. . A vernier scale 2 and a main scale 4 are provided at the portions where the frame 10 and the slide bar 11 face each other, and the frame 10 and the slide bar 11 are both placed at arbitrary positions in the longitudinal direction by a stopper 7. Can be fixed. The insertion portion 11a of the slide bar 11 can be inserted between the rollers of the chain, and the lower end of the frame body 10 can contact the rollers of the chain. Therefore, even when the insertion portion 11a is inserted between the rollers of the chain, the stopper 7 is at a position sufficiently separated from the chain.

FIG. 1 is a front view showing a chain wear measuring tool in a state in which a dimension between rollers of the chain is being measured in order to check wear of the chain. When measuring the wear of the chain, the frame 10 is brought into contact with the upper portion of the roller 8a of the chain 8 and then the insertion portion 11a of the slide bar 11 is brought into contact with both rollers 8a between the rollers 8a to be measured. After inserting it until it stops, fix the frame 10 and the slide bar 11 with the stopper 7, take out the chain wear measuring tool, read the scale at a bright place, and read the measured value and the reference between the roller 8a of the chain 8 which is not worn. The wear state can be grasped from the difference in the values. Since the insertion portion 11a of the slide bar 11 has a size corresponding to the space between the rollers 8a of the chain 8, the size of the slide bar 11 in the longitudinal direction can be made small. Further, since the insertion direction of the insertion portion 11a of the slide bar 11 and the sliding direction of the frame body 10 and the slide bar 11 are aligned, the stopper 7 for fixing the frame body 10 and the slide bar 11 is separated from the chain 8. It is also possible to operate the stopper 7 and measure easily even for a chain that is installed in an existing device.

[0009]

[Effect of device]

 As described above, according to the present invention, the slide bar is formed with the insertion portion which is gradually reduced at the distal end in the longitudinal direction, and the insertion portion is inserted between the rollers of the chain. Since the sliding direction of the body and the slide bar are aligned, the stopper that fixes the frame body and the slide bar can be provided separately from the chain, making it easy even for chains that are already installed in existing equipment. In addition, it can be measured accurately.

[Brief description of drawings]

FIG. 1 is a front view showing a measurement state of a chain wear measuring tool according to an embodiment of the present invention.

FIG. 2 is a front view of a chain wear measuring tool according to an embodiment of the present invention.

3 is a cross-sectional view taken along the line AA of the chain wear measuring tool shown in FIG.

FIG. 4 is a front view showing a conventional chain wear measuring tool.

[Explanation of symbols]

 2 vernier scale 4 main scale 8 chain 8a roller 10 frame 11 slide bar 11a insertion part

Claims (1)

[Scope of utility model registration request] 1. A wear measuring tool for a chain comprising a frame body having a scale and a slide bar slidably fitted to the frame body having a scale having a relationship of the scale and the main scale. A chain wear measuring tool characterized in that an insert portion is formed at a tip end in a sliding direction of the slide bar, the width of which is proportionally reduced in a tip end direction.