JPH089148Y2 - Strain measuring gauge for shield grating - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The present invention relates to a gauge for controlling a shield grid width of a coke oven guide vehicle.

(Prior Art) A shield grid of a coke oven guide vehicle is exposed to high temperature during coke extrusion, so that thermal distortion occurs. The vertically elongated shield grid has a large vertical distortion, and in particular, the side surface of the lower support type shield grid causes a dent distortion. When the degree of this dent becomes large, the ram of the extruder that pushes out the coke contacts and the guide wheel overturns, so the width of the shield grid is always controlled. Conventionally, as a device for managing the shield grid width, for example, a measuring instrument using a spring 6 shown in FIG. 2 has been used. The shield grid width is measured by contacting the patch plate fixed to one end of the measuring rod fixed by the support rod 7 with the measuring part of the shield grid, and facing the patch plate provided at the other end and connected to the pointer and expanded and contracted by the spring. The scale 9 of the pointer 8 was read while being brought into contact with the part. The measurement was moved up and down in the vertical direction of the shield grid to measure the shield grid width and manage the strain.

In addition, as shown in FIG. 3, a device for reading the scale 9 of the support rod 7 by connecting the movable pin 10 of the measuring unit and the pointer unit with the rack and pinion 11 and rotating the handle 12 at hand forward (reverse) To measure the shield grid width.

(Problems to be solved by the invention) In the above apparatus, since the supporting rod 7 for fixing the measuring unit is long in the coke oven that is long in the vertical direction, the apparatus can be easily transported,
It took labor to store. Further, when measuring a high place, a long support rod wobbles, which makes it difficult to fix the device, and thus requires a plurality of people. Further, since the contact plate and the movable pin are moved from the inner side to the outer side for measurement, there is a problem that the outer width cannot be measured. Further, in the apparatus shown in FIG. 2, since the pointer is far, it is difficult to read the scale.

(Means for Solving the Problems) As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that one side has a contactor that abuts against the measurement unit and the other side has a control reference mark. It has been found that the problem can be solved by a strain gage for shield grating, which comprises a rod and a support rod which is stretchable and fixed at one end thereof.

 Hereinafter, the present invention will be described in detail.

FIG. 1 is a strain measuring gauge showing an example of the present invention. Reference numeral 1 is a support rod, 2 is a contactor, 3 is a measuring rod, 4 is a management reference mark, and 5 is a screw portion.

The shape of the support rod 1 is not particularly limited, but has a stretchable structure such as a swing-out type fishing rod. The length when extended depends on the distance to the measurement point, but it is usually 3 to 6 m, and when reduced (stored) it is easy to carry, for example 0.5 to 1.5 m.
It is said. The supporting rod 1 is preferably made of a material that is lightweight and has little bending in terms of easy handling during transportation and measurement, and specifically, glass fiber, carbon fiber or the like is used. The contactor 2 is provided at one end of the measuring rod 3, and is provided so that the measuring unit can be easily moved up and down by hitting one side of the object to be measured during measurement. It suffices that the contactor 2 be in contact with one side of the object to be measured and easily move up and down, and may be a plate-shaped, columnar, spherical, or other fixed type or a roller-type rotary type that is firmly welded to the measuring rod 3 or the like. Fixed.

The measuring rod 3 to which the contactor 2 is attached has a columnar shape having a circular or polygonal cross section or a plate shape having a narrow width, which is longer than the width of the measurement object. As the material of the contactor 2 and the measuring rod 3, a material having little bending and distortion and having heat resistance is used. For example, metals such as iron and stainless steel are preferably used.

The management reference mark 4 is provided on the measuring rod 3 with the width of the shield lattice width controlled as the length from the contact 2. Specifically, it is provided as a mark that can be easily discriminated from a distance such as a cut or a color.

The length from the contactor 2 is determined by the strain condition of the object to be measured at high temperature and during cooling and the distance such as the furnace width to be controlled. For example, the side surface of the shield grid of the lower-supporting coke guide vehicle is dented due to thermal strain. When the temperature is higher, the dent becomes larger, and when cooled, the dent becomes smaller. In other words, when the high temperature coke passes through the shield grid, the inner width is narrow, and after cooling, the inner width is wide, so clarify the relationship between the inner width at high temperature and the inner width of temperature at measurement. The position of the fiducial mark is determined.

The measuring rod 3 and the supporting rod 1 may be fixed by adhesion, welding, caulking, or the like, and it is preferable to provide a screw portion 5 as shown in FIG.

With the strain measuring gauge of the present invention, it suffices to bring the contactor into contact with one end of the object to be measured and to confirm that the other end is within the reference mark, and it is not necessary to read the numerical value.

(Effect of the Invention) The strain measuring gauge of the present invention is lightweight, expands and contracts, and can be disassembled and assembled, which facilitates transportation and storage. The measurement work can be efficiently performed by one person.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a strain measuring gauge showing an example of the present invention, and FIGS. 2 and 3 are schematic diagrams showing a conventional measuring instrument. 1: Support rod, 2: Contact, 3: Measuring rod, 4: Control standard mark

Claims (1)

[Scope of utility model registration request] 1. A strain gage for a shield grating, which comprises a measuring rod having a contact for abutting against a measuring portion on one side and a control reference mark on the other side, and an extendable support rod having the measuring rod fixed at one end. .