JP2019203382A - Mold with temperature sensor - Google Patents

Abstract

To provide a mold with a temperature sensor capable of measuring a surface temperature of concrete suitably when there is a distance between the temperature sensor and the installed concrete.SOLUTION: In a mold with a temperature sensor, a main mold 10 which has a tabular body 11 for pressuring an installed concrete 30 to support it so as to form it in a uniformed shape, and which is mounted with an infrared temperature sensor 53 for measuring a surface temperature of the concrete 30 at a position apart from the concrete 30 for a predetermined distance, and in which an opening 11b is provided in the tabular body 11, and which is fitted with a sensor housing 50 holding a temperature sensor 44 at the opening 11b.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a formwork with a temperature sensor in which a temperature sensor for measuring the surface temperature of concrete is added to a main formwork having a plate body that supports a concrete shape by applying pressure to the placed concrete. is there.

  The present applicant has previously proposed a system capable of managing the surface temperature of concrete to be placed and reasonably guaranteeing the strength of the resulting building in Patent Document 1 (Japanese Patent Laid-Open No. 2014-77241) and the like. .

  In Patent Document 1, a formwork such as a resin formwork or a metal formwork was mainly examined. However, in reality, a concrete panel using a South Sea material is also frequently used.

  Regardless of the type of formwork, in order to measure the surface temperature of the placed concrete using a temperature sensor, as shown in FIG. It is desirable to place it near. And such a form with a temperature sensor has begun to be used in the field.

  However, in reality, there may be an inevitable distance between the temperature sensor and the placed concrete.

  Typically, there is a case where the concrete is not placed only by the main formwork, but a decorative formwork is added to the concrete side of the main formwork to form irregularities on the placed concrete. For example, in the case where a wall surface that is easily noticeable near the coast is to be constructed with concrete, this is the case in which irregularities, grooves, etc. are formed on the wall surface to make the design close to the natural wall surface.

  In such a case, not only the thickness of the plate of the main mold but also the distance obtained by adding the thickness of the decorative mold to the thickness is generated.

  There is no known technique for appropriately measuring the surface temperature of concrete when there is a distance between the temperature sensor and the concrete to be placed.

JP 2014-77241 A

  Therefore, an object of the present invention is to provide a mold with a temperature sensor that can appropriately measure the surface temperature of concrete when there is a distance between the temperature sensor and the concrete to be placed.

  The mold with temperature sensor according to the first aspect of the present invention has a plate body in which an opening penetrating in the thickness direction is formed, and is a main mold that supports the placed concrete by applying pressure to the placed concrete. The opening includes a frame and a temperature sensor for measuring the surface temperature of the cast concrete at a predetermined distance from the placed concrete, and has a contact surface in contact with the placed concrete, the opening And a sensor housing to be fitted to the housing.

  A formwork with a temperature sensor according to a second aspect of the invention includes a heat insulating material disposed in a predetermined range on the outer periphery of the sensor housing, and a substrate that is fixed to the side opposite to the contact surface and supports the temperature sensor.

  The mold with temperature sensor according to the third aspect of the present invention is a thermally conductive cap whose contact surface has a substantially C-shaped cross section.

  With these configurations, when there is a distance between the temperature sensor and the placed concrete, the surface temperature of the concrete can be appropriately measured.

The longitudinal cross-sectional view which shows the main formwork and additional formwork in embodiment of reference of this invention The longitudinal cross-sectional view which shows the sensor housing | casing and heat exchanger in reference embodiment of this invention Partial enlarged view of FIG. The longitudinal cross-sectional view which shows the sensor housing | casing and temperature sensor in embodiment of this invention

  Hereinafter, a reference embodiment of the present invention and an embodiment of the present invention will be described with reference to the drawings.

(Reference embodiment)
FIG. 1 is a longitudinal sectional view showing a main mold and an additional mold in a reference embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing the sensor casing and a heat transfer body, and FIG. FIG.

  The reference embodiment relates to a case where a decorative mold is used as an additional mold and is connected to the main mold, and as a result, the distance between the concrete and the temperature sensor is increased by the thickness of the additional mold.

  As shown in FIG. 1, the main mold 10 is a core member that applies pressure to the concrete 30 to be placed and supports the concrete 30 so as to form a certain shape. As the main formwork 10, a resin formwork or metal formwork having upright portions 12 and reinforcing ribs 13 protruding from the plate 11 to the opposite side of the concrete 30 can be used. A combination of reinforcements may be used.

  In the reference embodiment, the main mold 10 does not directly contact the concrete 30, and the additional mold 20 is interposed between the main mold 10 and the concrete 30. The additional mold 20 has a decorative mold 22 for making contact with the concrete 30 to form desired irregularities and grooves.

  The decorative frame 22 is usually formed of an elastic material such as rubber or urethane, or a foam, and does not have sufficient strength. Therefore, the support plate 21 is lined on the decorative mold 22. The support plate 21 can be arbitrarily configured with a concrete panel, sheet metal, or other highly rigid member.

  Further, the main mold 10 and the additional mold 20 need to be in close contact with each other and maintain sufficient strength as a whole, and are thus integrated by a connecting tool such as a connecting bolt 25.

  As a result, as shown in FIG. 2, even if the thickness of the plate 11 of the main mold 10 is excluded, the main mold 10 is equal to the sum of the thickness A of the support plate 21 and the thickness B of the decorative mold 22. Compared with the case of using only the thickness, the thickness of the entire mold is increased.

  On the other hand, the surface of the plate 11 opposite to the concrete 30 is a mounting surface 11 a of the case 40 that houses a circuit (not shown) that processes the output value of the temperature sensor 44. The plate 11 is penetrated from the mounting surface 11a in the thickness direction, the opening 11b having a predetermined cross-sectional shape is opened, and the sensor housing 42 that houses the temperature sensor 44 is fitted into the opening 11b.

  As shown in an enlarged view in FIG. 3, a thin metal plate 43 with good thermal conductivity is attached to the end surface of the sensor housing 42 on the concrete 30 side, and the temperature of a thermistor or the like is placed inside the metal plate 43. A sensor 44 is mounted.

  However, there is a distance between the sensor housing 42 and the concrete 30 by the sum of the thicknesses (A + B). Therefore, a through hole 26 that penetrates the decorative mold frame 22 and the support plate 21 is opened at a position where the sensor housing 42 abuts, and the heat transfer body 41 is fitted into the through hole 26. As a result, the temperature sensor 44 is thermally coupled to the concrete 30 via the heat transfer body 41 and the metal plate 43.

  Actually, the thicknesses of the decorative mold 22 and the support plate 21 are various. For this reason, it is good to set the length for every step and prepare the heat transfer body 41 for every length. Furthermore, the thicknesses of the decorative mold 22 and the support plate 21 often vary. Therefore, as shown in FIG. 3, a heat conductive sheet 45 may be interposed between the metal plate 43 and the heat transfer body 41 in order to absorb errors.

  Furthermore, it is desirable to arrange a heat insulating material around the heat transfer body 41 and the sensor casing 42 to suppress heat radiation to the decorative mold and the like and to improve the thermal conductivity toward the temperature sensor 44 side.

  In this way, even when the distance between the concrete and the temperature sensor is increased by the thickness of the additional mold, it is possible to effectively cope with it.

(Embodiment)
Unlike the reference embodiment, the embodiment of the present invention relates to the case where the surface temperature of the concrete 30 is measured in a non-contact manner. Therefore, the present invention can be applied not only when there is an additional mold as in the reference embodiment but also when the concrete 30 is supported only by the main mold 10. On the other hand, the embodiment is also common to the reference embodiment in that the temperature sensor is separated from the surface of the concrete 30 by a certain distance.

  FIG. 4 is a longitudinal sectional view showing the sensor housing and the temperature sensor in the embodiment of the present invention. As shown in FIG. 4, an opening portion 11 b that penetrates the plate body 11 in the thickness direction is opened at a predetermined position of the plate body 11, and the sensor housing 50 is fitted into the opening portion 11 b. The left end surface of the sensor housing 50 in FIG.

  In the state shown in FIG. 4, the sensor housing 50 has a thermally conductive cap 51 whose cross section is C-shaped. A substrate 52 is fixed to the right end surface (opening) of the cap 51 in FIG. 4, and an infrared temperature sensor 53 is mounted on the inner central portion of the substrate 52. Further, a heat insulating material 54 is disposed outside the sensor casing 50 so as to surround the sensor casing 50.

  As shown in FIG. 4, a certain distance L is opened from the infrared temperature sensor 53 to the right side surface of the concrete 30. The left side of FIG. 4 is an infrared ray incident port of the infrared temperature sensor 53, and the infrared temperature sensor 53 measures the amount of infrared rays emitted from the inside of the sensor housing 50.

  It is desirable to perform a process for improving the emissivity, such as an oxidation process, inside the sensor housing 50. However, if there is no variation in emissivity, such processing may be omitted.

  In the reference embodiment, since heat conduction by the heat transfer body 41 is assumed, there is a limit to the suppression of heat dissipation. On the other hand, in the embodiment, since temperature measurement is performed by a non-contact method, there is an advantage that the heat radiation suppressing effect is high.

  The opening angle of the infrared temperature sensor 53 is often 90 degrees or more. Therefore, in general, it is necessary to place the infrared temperature sensor 53 as close as possible to the concrete 30 as a heat source. In other words, the distance between the infrared temperature sensor 53 and the concrete 30 is set to be small.

  However, when the cap 51 of the sensor housing 50 is used as in the embodiment, most of infrared rays emitted from the concrete 30 can be captured even if the distance is set larger. In other words, the distance L in FIG. 4 can be set longer to meet the actual condition, and temperature measurement can be performed without hindrance.

  Note that the inside of the sensor housing 50 may be a cavity (that is, air). On the other hand, a polyethylene resin member or a polyethylene resin itself may be loaded or filled in the inside. In this way, it is possible to avoid errors caused by water vapor contained in the air and adverse effects such as condensation or icing. The signals detected by the sensors 44 and 53 are output to a circuit (not shown) housed in the sensor housings 42 and 50.

DESCRIPTION OF SYMBOLS 10 Main mold frame 11 Plate body 11a Mounting surface 11b Opening part 12 Standing part 13 Reinforcement rib 20 Additional mold frame 21 Support plate 22 Cosmetic mold frame 25 Connection bolt 26 Through-hole 30 Concrete 40 Case 41 Heat-transfer body 42, 50 Sensor housing 43 Metal Plate 44 Temperature Sensor 45 Thermal Conductive Sheet 51 Cap 52 Substrate 53 Infrared Temperature Sensor 54 Heat Insulating Material

Claims (3)

A main frame having a plate body with an opening penetrating in the thickness direction and supporting the placed concrete by applying pressure to form a fixed shape;
The opening includes a temperature sensor for measuring a surface temperature of the placed concrete at a position away from the placed concrete by a predetermined distance, and has a contact surface in contact with the placed concrete. And a sensor housing fitted to the mold. The sensor casing is
A heat insulating material disposed in a predetermined range of the outer periphery;
The formwork with a temperature sensor according to claim 1, further comprising: a substrate that is fixed to a side opposite to the contact surface and supports the temperature sensor. The form with temperature sensor according to claim 1 or 2, wherein the contact surface is a thermally conductive cap having a substantially C-shaped cross section.