RU221027U1 - Device for measuring the thickness of fibrous products - Google Patents

Abstract

The utility model relates to control means, including construction control means, namely devices for determining the thickness of flat fibrous products, for example, mineral wool insulation. The technical result is the ability to use the device in horizontal and inclined positions with varying values of the specific load created on fibrous products. The cylindrical hollow body of the device is connected to a cover and a base made in the form of a plate with a central passage hole. A dynamometer with a handle is attached to the lid. Inside the body there is an insert, in the lower part connected to a needle inserted into the passage hole. In the upper part of the insert there is a through threaded hole into which a side handle with a pressure washer is inserted and moved along a vertical through groove made in the body. A thickness scale is applied to the surface of the body, and a mark is applied to the surface of the insert. 2 ill.

Description

Field of technology

The utility model relates to control means, including construction control means, namely devices for determining the thickness of flat fibrous products, for example mineral wool insulation.

State of the art

A thickness gauge for fire-resistant non-shrink insulation is known (Patent RU 34721, IPC G01B 5/02, publ. 12/10/2003), which consists of interconnected units mounted on the body for installing the thickness gauge and measuring the thickness of the insulation. The thickness gauge installation unit is made in the form of a removable disk fixed to the housing in the lower part of the end plane with a passage hole located in the center and a movable needle with a removable working load coaxially mounted along the vertical axis of the housing. The insulation thickness measuring unit has a measuring scale and a guide bushing fixed in the upper part. The parts of the device (removable disk, movable needle) can be made of different materials, for example: metal, alloy, fiberglass, carbon fiber, glass, ceramics and magnetic material.

The main disadvantage of the device is its narrow scope of application - exclusively for fire-resistant non-shrink insulation, as well as the fact that the device can only be used in a vertical position, since the load is created by gravity using a removable working weight in the upper part.

The closest known device is a thickness gauge for flat fibrous products (GOST 17177-94. Construction thermal insulation materials and products. Test methods. Put into effect by Resolution of the Ministry of Construction of Russia dated August 7, 1995 No. 18-80, date of implementation 1996-04-01, p. 4.7), which consists of a housing connected by fastening screws to a base in the form of a plate. Inside the case there is an insert with a scale on the side surface and a needle at the bottom. The insert is connected to a handle located at the top of the device. To fix the insert, use a clamping screw located on the side surface of the housing.

The disadvantage of the device is the narrow scope of the device, namely, the possibility of use exclusively in a vertical position due to the fact that the load is created gravitational by the weight of the device. In addition, the device cannot be used if it is necessary to carry out measurements at a specific load different from 500 ± 7.5 Pa (specified in GOST 17177-94), since the weight of the device is designed for this load.

The claimed utility model solves the problem of expanding the scope of application of the device, that is, it allows the device to be used in horizontal and inclined positions at different values of the specific load and to measure the thickness of the product when testing directly on an object, for example, on a wall, without removing it.

The technical result consists in realizing the possibility of using the device in horizontal and inclined positions with varying the values of the specific load created on fibrous products due to controlled pressure.

Essence Revealing

The technical result is achieved by the fact that in a device for measuring the thickness of flat fibrous products, consisting of a cylindrical hollow body connected by a threaded connection to a cover and fastening screws with a base in the form of a plate made with a central passage hole, an insert with a needle is located in the cavity of the cylindrical hollow body , fixed with the possibility of movement, according to the proposed solution, a dynamometer with a handle is fixed on the lid, in the upper part of the insert there is a through threaded hole in which a side handle is fixed with a threaded section equal to the length of the threaded section of the through hole, and on the side of the side handle equipped with a clamping a washer, in the cylindrical hollow body there is a vertical through groove for its movement, and on the surface of the cylindrical hollow body there is a thickness scale numbered in millimeters, and on the surface of the insert there is a mark, visible through the vertical through groove.

Brief description of drawings

The utility model is illustrated by drawings, where in Fig. Figure 1 shows a general view of the device (side view from the scale and longitudinal groove on the cylindrical hollow body); in fig. 2 shows a section 1-1, indicated in FIG. 1, where:

1- cylindrical hollow body;

2 - base;

3 - cover;

4 - dynamometer;

5 - dynamometer handle;

6 - insert;

7 - needle;

8 - through hole of the base 2;

9 - side handle of the insert;

10 - through hole of the insert;

11 - vertical through groove;

12 - pressure washer;

13 - thickness scale;

14 - risk.

Implementation of a utility model

The device consists of a cylindrical hollow body 1 (Fig. 1), connected by fastening screws to a base 2, made in the form of a plate with a through hole 8. In the upper part of the cylindrical hollow body 1 there is a cover 3 connected to the cylindrical hollow body 1 via a threaded connection. A dynamometer 4 with a dynamometer handle 5 is attached to the cover 3 using a mounting screw. Inside the cylindrical hollow body 1 there is an insert 6 (Fig. 2), in the lower part connected to a needle 7 via a threaded connection. In the upper part of the insert 6 there is a through threaded hole 10, in which a side handle 9 is fixed with a threaded section equal to the length of the threaded section of the through hole 10. To fix the position of the insert 6 together with the needle 7, the side handle 9 is equipped with a pressure washer 12. The needle 7 is inserted into the passage hole 8 of the base 2, moves up or down together with the insert 6 along the vertical through groove 11, made in the cylindrical hollow body 1. To determine the thickness of the insulation, a thickness scale 13 is applied to the surface of the cylindrical hollow body 1, numbered, for example, in millimeters. And on the surface of the insert 6 there is a mark 14, visible through the vertical through groove 11.

All elements of the device are made in a single housing, interconnected by assembly operations and are in functional and structural unity with the implementation of a general functional purpose.

The device works as follows.

To measure the thickness of flat fibrous products, the base 2 of the device is installed on the test product. When the test product is positioned horizontally, the axis of the cylindrical hollow body 1 of the device is oriented vertically. When the test product is positioned vertically or inclined, the axis of the cylindrical hollow body 1 of the device is oriented, respectively, horizontally or obliquely. With one hand, hold the position of the device by the handle of the dynamometer 5, and with the other, by rotating the side handle 9, release the insert 6. By pressing the side handle 9 of the insert with your hand, move the insert 6 together with the needle 7 in the direction of the product being tested along the vertical through groove 11. In this case, needle 7 pierces the test product all the way to the surface located behind the test product. After this, apply pressure with one hand to the handle 5 of the dynamometer 4. The pressure force is controlled by the scale and arrow of the device. In this case, the pressure force Ρ (Ν - Newton) must correspond to the required specific load ρ (Pa - Pascal), which is specified in GOST 17177-94 500±7 Pa or in the regulatory documentation for a specific type of product. The pressure force is determined by:

Ρ=ρ⋅Α,

where A is the area of the base 2 in cm ² .

After holding for the required time, by rotating the side handle 9 with the pressure washer 12, insert 6 with needle 7 is fixed. Next, using the thickness scale 13 and marks 14, the thickness of the test product is measured.

The proposed device makes it possible to determine the thickness of flat fibrous products located in the vertical, horizontal and inclined directions. In this case, the determination of thickness can be carried out both in laboratory conditions on samples of flat fibrous products, and in working conditions at the site, taking measurements directly on the building on which construction control work is being carried out. In the second case, there is no need to take samples of flat fibrous products (insulation). Thickness measurements can be taken directly at the locations of flat fiber products. With this approach, it is possible to increase the number of thickness measurement sites without increasing the costs of restoring these sites, which are inevitable in laboratory thickness determinations, when samples must be taken by cutting them out.

The device can be completely manufactured and assembled in a factory or in a mechanical assembly shop using known technological operations for manufacturing and joining metal parts.

When using the inventive device, it is possible to carry out measurements both in a vertical and in a horizontal or inclined position, with varying the specific load created on the fibrous products due to the creation of instrument-controlled pressure.

Claims (1)

A device for measuring the thickness of flat fibrous products, consisting of a cylindrical hollow body connected by a threaded connection to a cover and fastening screws with a base in the form of a plate made with a central passage hole; in the cavity of the cylindrical hollow body there is an insert with a needle, fixed with the ability to move, characterized in that a dynamometer with a handle is fixed on the cover, in the upper part of the insert there is a through threaded hole in which a side handle with a threaded section is fixed, equal to the length of the threaded section of the through hole, and on the side of the side handle, equipped with a pressure washer, in a cylindrical hollow body a vertical through groove for its movement, and on the surface of the cylindrical hollow body there is a thickness scale numbered in millimeters, and on the surface of the insert there is a mark visible through the vertical through groove.

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