JP6831308B2 - Heat resistant shield - Google Patents

Description

The present invention relates to a heat-resistant protective shield, and more particularly to a heat-resistant protective shield used to block heat from a heat source object.

In the inspection of a heat source object such as a high-temperature hot-rolled coil, it may be necessary for an operator to approach the heat source object for inspection. In that case, it is necessary to shield the heat from the heat source object and protect the worker from the heat. For example, Patent Document 1 discloses a heat-resistant protective shield for protecting an operator from heat.

The heat-resistant protective shield of Patent Document 1 includes a main body in which a heat insulating cushioning material is loaded between a rigid metal outer plate and an inner plate, a tempered glass monitoring window provided in the main body, a gripping handle, and a retractable stand. It has. The operator holds the gripping handle and carries the heat-resistant protective shield close to the heat source object, and while moving with the heat-resistant protective shield, or by setting up the heat-resistant protective shield with a retractable stand, the monitoring window is opened. The status of the heat source object can be grasped through this.

Jikkenhei 5-37252 Gazette

However, the heat-resistant protective shield of Patent Document 1 has an extremely high rigidity and is inflexible because it has mechanical strength. For example, when a worker carries a heat-resistant shield, or when inspecting a heat source object while moving with the heat-resistant shield, if there is an obstacle at his feet, he / she can use the heat-resistant shield. Due to its inflexibility, each time it must act to avoid the heat-resistant shield from obstacles. In addition, when the worker wants to inspect the heat source object near his / her feet while moving with the heat-resistant protective shield or when inspecting the inspection object by standing the heat-resistant protective shield, the worker has heat-resistant protection. Due to the inflexibility of the shield, it is extremely difficult to place the heat-resistant protective shield so that the monitoring window is close to the heat source object, and there is no choice but to inspect from the monitoring window far away from the heat source object. The detailed situation cannot be grasped. As described above, the heat-resistant protective shield of Patent Document 1 lacks flexibility, and as a result, workability is extremely inferior.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a heat-resistant protective shield having excellent workability.

The heat-resistant protective shield of the present invention is a heat-resistant protective shield used to block heat from a heat source object, and is a first heat-resistant protective part having a predetermined shape retention property, and is the first heat-resistant protective shield. A first heat-resistant protection unit provided with a window for viewing the heat source object through the unit, and a second heat-resistant protection unit provided continuously with the first heat-resistant protection unit and having flexibility. It is characterized by.

Further, the first heat-resistant protection unit and the second heat-resistant protection unit are provided with a flexible heat-resistant fiber material, and the first heat-resistant protection unit is provided with a support frame for supporting the heat-resistant fiber material. Is preferable.

Further, it is preferable that the second heat-resistant protection unit is provided with a length adjusting mechanism for adjusting the length of the second heat-resistant protection unit.

Further, it is preferable that the window portion is made of chemically strengthened glass.

According to the present invention, it is possible to provide a heat-resistant protective shield having excellent workability.

It is a figure which shows the heat-resistant protective shield which concerns on one Embodiment of this invention, (a) is a front view, (b) is a back view, (c) is a side view. It is a side view which shows the state after the length of the 2nd heat-resistant protection part of the heat-resistant protection shield of FIG. 1 was adjusted. It is a figure which shows an example of the use state of the heat-resistant protective shield of FIG. It is a figure which shows another example of the use state of the heat-resistant protective shield of FIG.

Hereinafter, the heat-resistant protective shield according to the embodiment of the present invention will be described with reference to the accompanying drawings. However, the embodiments shown below are merely examples, and the heat-resistant protective shield of the present invention is not limited to the following embodiments.

The heat-resistant protective shield 1 of the present embodiment is used to block heat from the heat source object H, as shown in FIGS. 3 and 4. The heat-resistant protective shield 1 is used, for example, in a steel mill, when a worker W approaches a heat source object H such as a rolling coil after hot rolling and inspects the heat source object H, the heat source object H and the worker W It is arranged between and is used to block the radiant heat from the heat source object H to the worker W and protect the worker W from the radiant heat. However, the heat-resistant protective shield of the present invention is not limited to the rolling coil after hot rolling, and is an object as a heat source such as a high-temperature material such as hot metal or slab, or high-temperature equipment such as a blast furnace or an incinerator. Any object can be used to block radiant heat from the object.

As shown in FIGS. 1 (a) to 1 (c), the heat-resistant shield 1 of the present embodiment is continuous with the first heat-resistant protective unit 2 having a predetermined shape retention and the first heat-resistant protective unit 2. It is provided with a second heat-resistant protective unit 3 having flexibility. The heat-resistant protective shield 1 is configured such that the first heat-resistant protective unit 2 and the second heat-resistant protective unit 3 are continuously provided along one direction (vertical direction in the drawing) and extend in one direction. ing. In the heat-resistant protective shield 1, for example, as shown in FIG. 3, the first heat-resistant protective unit 2 is located on the upper body side including the face of the worker W, and the second heat-resistant protective unit 3 is the worker W. It is used by being arranged between the heat source object H and the worker W so as to be located on the lower body side including the legs.

The first heat-resistant protective unit 2 has a predetermined shape-retaining property and shields heat from the heat source object H to the worker W. As shown in FIGS. 1A to 1C, the first heat-resistant protective unit 2 is formed in a substantially rectangular plate shape extending in one direction (vertical direction in the drawing), and is one end side in one direction (FIG. A second heat-resistant protective unit 3 is continuously provided on the lower center side). As will be described later, the first heat-resistant protective unit 2 is configured so that the worker W can grip it, and the worker W grips the first heat-resistant protective unit 2 to grip the heat-resistant protective shield 1. Can be held. The first heat-resistant protective unit 2 is formed in a size capable of blocking heat from the heat source object H to the upper body side including the face of the worker W while being held by the worker W. .. The size and shape of the first heat-resistant protective unit 2 are not particularly limited, but from the viewpoint of workability, the first heat-resistant protective unit 2 has a length corresponding to the area from the head to the chest or the vicinity of the abdomen of the worker W for work. The size and shape are set to have a width corresponding to the shoulder width of the person W.

Here, the term "predetermined shape retention" used in the present specification has a predetermined rigidity, and even if an external force of a predetermined magnitude or less is applied, the shape before the external force is applied is abbreviated. It means the property of being kept constant. The first heat-resistant protective unit 2 is at least even if the worker W holds the first heat-resistant protective unit 2 and lifts the heat-resistant protective shield 1 and receives gravity applied to the entire heat-resistant protective shield 1. The shape of the heat-resistant protective unit 2 of 1 is configured to be maintained substantially constant. Even if the worker W carries the heat-resistant protective shield 1 while holding the first heat-resistant protective shield 2 or works while holding the heat-resistant protective shield 1, the first heat-resistant protective unit 2 is deformed. Therefore, the first heat-resistant protective unit 2 can be easily arranged at an appropriate position so as to shield the upper body side of the worker W from the heat source object H.

The configuration of the first heat-resistant protective unit 2 is not particularly limited as long as it has a predetermined shape-retaining property and can shield heat from the heat source object H to the worker W. For example, the first heat-resistant protective unit 2 may be formed in a plate shape by a single metal having a predetermined shape-retaining property such as aluminum or titanium, but in the present embodiment, FIGS. 1 (a) to 1 (c) As shown in the above, the heat-resistant fiber material 21 and the support frame 22 for supporting the heat-resistant fiber material 21 are provided. By providing the lightweight heat-resistant fiber material 21 and the support frame 22, the first heat-resistant protective unit 2 can be made lighter than the case where the metal alone is formed in a plate shape. Therefore, the worker W can easily carry the heat-resistant shield 1 by grasping the first heat-resistant protective unit 2, and at the time of use, the worker W can position the first heat-resistant protective unit 2 at an appropriate position on the upper body side of the worker W. Can be easily placed in.

The heat-resistant fiber material 21 is a member that has flexibility and shields heat from the heat source object H to the worker W. As shown in FIGS. 1A to 1C, the heat-resistant fiber material 21 is formed in a substantially rectangular cloth shape, and one surface of the heat-resistant fiber material 21 is attached to the support frame 22 by a known fixing means such as heat-resistant tape. .. The heat-resistant fiber material 21 is formed in a cloth shape by fibers having heat resistance. For example, a flame-retardant rayon fiber woven fabric or a flame-resistant fiber felt (nonwoven fabric) produced by firing and carbonizing a special acrylic fiber. ) Etc. can be used, and an aluminum foil may be laminated on the surface thereof. Since the heat-resistant fiber material 21 has heat-resistant fibers as a constituent material, it can be made lighter than metal or the like. Further, the heat-resistant fiber material 21 has high heat reflectivity by laminating an aluminum foil on the surface thereof, and can efficiently shield heat from the heat source object H. In the present embodiment, the heat-resistant fiber material 21 is integrally formed of the same material as the heat-resistant fiber material 31, which will be described later. However, the heat-resistant fiber material 21 only needs to have flexibility and can shield the heat from the heat source object H to the worker W, and is formed as a separate body from a material different from the heat-resistant fiber material 31. It may be connected to the heat resistant fiber material 31.

The support frame 22 has a predetermined shape retention property and supports the heat-resistant fiber material 21. The support frame 22 supports the heat-resistant fiber material 21 having flexibility and imparts a predetermined shape retention to the heat-resistant fiber material 21. As shown in FIG. 1B, the support frame 22 has an outer frame 221 formed in a substantially rectangular frame shape along the peripheral edge of the heat-resistant fiber material 21 and a girder shape inside the outer frame 221. It is provided with a rectangular inner frame 222. The outer frame 221 and the inner frame 222 are made of a metal such as aluminum and have a predetermined shape retention property. The heat-resistant fiber material 21 is attached to the frame portion of the support frame 22, and at least the attached portion is provided with a predetermined shape retention. By forming the support frame 22 in the shape of a hollow frame, the support frame 22 can be made lighter than the shape of a solid plate. The shape and material of the support frame 22 are not particularly limited as long as it has a predetermined shape-retaining property and can support the heat-resistant fiber material 21, and may be formed in a substantially circular shape, for example. It may be formed of a heat-resistant resin.

As shown in FIGS. 1A to 1C, the first heat-resistant protection unit 2 includes a window portion 23 for viewing the heat source object H through the first heat-resistant protection unit 2. The window portion 23 has a predetermined shape-retaining property, and is configured to shield heat from the heat source object H to the worker W. Since the worker W can see the heat source object H through the window 23 while bringing the first heat-resistant protection unit 2 close to the heat source object H, the worker W is effectively protected from the heat from the heat source object H. , The details of the heat source object H can be observed. In the present embodiment, the window portion 23 is made of chemically strengthened glass. Chemically strengthened glass is glass whose surface is strengthened by a method such as a chemical strengthening method, a chemical strengthening method, or an ion exchange strengthening method. Since chemically strengthened glass has high strength, it can be reduced in weight by thinning. By forming the window portion 23 with chemically strengthened glass, the weight of the first heat-resistant protective portion 2 can be further reduced. Therefore, the workability of the worker W is further improved. Further, since the chemically strengthened glass has high strength, it can be prevented from being damaged by an impact due to careless contact during storage or transportation.

As shown in FIGS. 1A to 1C, the chemically strengthened glass constituting the window portion 23 is formed in a substantially rectangular shape and is attached between the heat-resistant fiber material 21 and the support frame 22. The heat-resistant fiber material 21 has a through hole 21a formed in a shape corresponding to the chemically strengthened glass, and the support frame 22 has a shape corresponding to the chemically strengthened glass in the central portion of the girder-shaped inner frame 222. Space 222a is formed. The chemically strengthened glass is aligned with the through hole 21a of the heat-resistant fiber material 21 and the space 222a of the inner frame 222. However, if the window portion 23 has a predetermined shape retention property, blocks heat from the heat source object H to the worker W, and can see the heat source object H through the first heat-resistant protection unit 2. It is not limited to this embodiment. The window portion 23 may be made of, for example, known braided tempered glass.

In the present embodiment, the first heat-resistant protective unit 2 includes a gripping handle 24 for the worker W to grip, as shown in FIGS. 1B and 1C. The gripping handle 24 is configured so that the worker W can hold the heat-resistant protective shield 1 by gripping the handle 24. The gripping handle 24 is provided on the inner frame 222 of the support frame 22 so as to project to the opposite side of the heat-resistant fiber material 21. The gripping handle 24 is shielded from the heat from the heat source object H by the heat-resistant fiber material 21, and at the same time, the hand of the worker W who grips the gripping handle 24 is shielded from the heat from the heat source object H.

The second heat-resistant protective unit 3 has flexibility and shields heat from the heat source object H to the worker W. As shown in FIGS. 1A to 1C, the second heat-resistant protection unit 3 is formed in a substantially rectangular shape extending in one direction (vertical direction in the drawing), and is one end of the first heat-resistant protection unit 2. It is continuously provided on the side (lower end side in the figure). The second heat-resistant protective unit 3 is formed in a size capable of blocking heat from the heat source object H to the lower body side including the legs of the worker W. The size and shape of the second heat-resistant protective unit 3 are not particularly limited, but from the viewpoint of workability, the second heat-resistant protective unit 3 has a length corresponding to the vicinity of the chest or abdomen of the worker W to the toes for work. The size and shape are set to have a width corresponding to the shoulder width of the person W.

Here, the term "flexibility" as used in the present specification means a property of deforming from the shape before the external force is applied when an external force of a predetermined magnitude or more is applied. The second heat-resistant protective unit 3 has the flexibility of being deformed by the weight of the second heat-resistant protective unit 3 when the heat-resistant protective shield 1 is lifted, and the operator suddenly touches the floor surface or obstacles. It has the flexibility to deform when the second heat-resistant protective unit 3 is brought into contact with another member. Therefore, when the worker W carries the heat-resistant protective shield 1, even if the second heat-resistant protective unit 3 comes into contact with the floor surface or an obstacle, the second heat-resistant protective unit 3 causes the floor surface or the obstacle. Since it is deformed according to the shape of the above, it is not necessary to move the heat-resistant protective shield 1 so as to avoid the floor surface or obstacles, and the heat-resistant protective shield 1 can be easily carried. Further, when using the heat-resistant protective shield 1, as shown in FIG. 3, for example, when it is desired to inspect the portion of the heat source object H corresponding to the eye height of the worker W, the second heat-resistant shield 1 is used. Since the protection unit 3 hangs substantially straight downward in the vertical direction, it is protected up to the vicinity of the toes of the worker W. On the other hand, as shown in FIG. 4, when it is desired to inspect the portion of the heat source object H corresponding to the height of the feet of the worker W, the second heat-resistant protective unit 3 is brought into contact with the floor surface. Therefore, the window portion 23 of the first heat-resistant protection unit 2 can be easily brought close to the heat source object H, and the details of the heat source object H can be inspected. A heat-resistant protective shield made of a single metal cannot be formed long enough to protect the feet of an operator from the viewpoint of portability and workability as described above. According to the heat-resistant protective shield 1 of the present embodiment, since the second heat-resistant protective unit 3 has flexibility, even if it is formed long so as to protect the feet of the worker W, the above-mentioned portability and portability Workability is not impaired. Further, since the second heat-resistant protective unit 3 can be freely folded, the heat-resistant protective shield 1 can be stored compactly.

The configuration of the second heat-resistant protective unit 3 is not particularly limited as long as it has flexibility and can shield heat from the heat source object H to the worker W. For example, the second heat-resistant protective unit 3 may include a foil of a single metal such as a flexible aluminum foil, or as in the present embodiment shown in FIGS. 1A to 1C. The heat-resistant fiber material 31 having flexibility may be provided.

As shown in FIGS. 1A to 1C, the heat-resistant fiber material 31 is formed in a substantially rectangular cloth shape extending in one direction (vertical direction in the drawing), and is the heat-resistant fiber of the first heat-resistant protective unit 2. It is integrally molded with the material 21 and is continuously provided on the first heat-resistant protective unit 2. The heat-resistant fiber material 31 is formed into a cloth shape by fibers having heat resistance. For example, a flame-retardant rayon fiber woven fabric or a flame-resistant fiber felt (nonwoven fabric) produced by firing and carbonizing a special acrylic fiber. ) Etc. can be used, and an aluminum foil may be laminated on the surface thereof. The heat-resistant fiber material 31 has high heat reflectivity by laminating an aluminum foil on the surface thereof, and can efficiently shield heat from the heat source object H. Further, the heat-resistant fiber material 31 can be made lighter than metal or the like by having the heat-resistant fiber as a constituent material. Therefore, the second heat-resistant protective unit 3 can be further reduced in weight by providing the heat-resistant fiber material 31. Since the heat-resistant protective shield 1 can be reduced in weight as a whole by reducing the weight of the second heat-resistant protective unit 3, it is possible to improve the workability of the worker W and reduce the fatigue of the worker W. ..

As shown in FIGS. 1 (b) and 1 (c), the second heat-resistant protective unit 3 includes a length adjusting mechanism 32 for adjusting the length of the second heat-resistant protective unit 3. The length adjusting mechanism 32 can adjust the length of the second heat-resistant protective unit 3 in one direction (vertical direction in the drawing). In the present embodiment, the length adjusting mechanism 32 is an engaging portion (the lower end side in the drawing) of the second heat-resistant protective portion 3 arranged on the side opposite to the first heat-resistant protective portion 2. A male hook) 32a and a plurality of engaged portions (female hooks) 32b arranged at intervals along one extending direction of the second heat-resistant protective portion 3 are provided. As shown in FIG. 2, the length adjusting mechanism 32 folds the second heat-resistant protective portion 3 by engaging the engaging portion 32a with any of the engaged portions 32b, thereby providing the second heat-resistant protection. The length of the portion 3 can be adjusted. The heat-resistant protective shield 1 can be configured to have a length corresponding to the height of the worker W by adjusting the length of the second heat-resistant protective unit 3 according to the height of the worker W. W can work more safely because the risk of trampling on the second heat-resistant protective unit 3 is reduced. The length adjusting mechanism 32 is not limited to the present embodiment as long as the length of the second heat-resistant protection unit 3 can be adjusted. For example, the second heat-resistant protection unit 3 is provided with a string-shaped fastener. It may be configured so that the length can be adjusted by winding up.

As shown above, the heat-resistant protective shield 1 of the present embodiment has a first heat-resistant protective portion 2 having a predetermined shape retention property and having a window portion 23, and a second heat-resistant protective shield 1 having flexibility. It has a part 3. Since the first heat-resistant protective unit 2 has a predetermined shape-retaining property, the worker W can easily place the first heat-resistant protective unit 2 at an appropriate position so that the upper body side including the face is hidden from the heat source object H. The second heat-resistant protective unit 3 can be arranged at an appropriate position so that the lower body side including the legs is hidden from the heat source object H. Since the second heat-resistant protective unit 3 has flexibility, the worker W can perform the heat-resistant protective shield 1 (especially) even if there is an obstacle near the feet or the inspection target position is near the feet. , The first heat-resistant protection unit 2) can be easily brought close to the heat source object H, and the heat source object H can be inspected in detail. Therefore, by using the heat-resistant protective shield 1 of the present embodiment, the workability of the worker W is remarkably improved. Further, since the second heat-resistant protective unit 3 has flexibility, the second heat-resistant protective unit 3 is formed to have a length up to the feet of the worker W without impairing the workability of the worker W. Therefore, the heat-resistant protective shield 1 can sufficiently shield the heat from the heat source object H to the feet of the worker W. Therefore, by using the heat-resistant protective shield 1 of the present embodiment, not only the workability of the worker W but also the safety is improved.

1 Heat-resistant protective shield 2 First heat-resistant protective part 21 Heat-resistant fiber material 21a Through hole 22 Support frame 221 Outer frame 222 Inner frame 222a Space 23 Window part 24 Gripping handle 3 Second heat-resistant fiber material 31 Heat-resistant fiber material 32 Length Adjustment mechanism 32a Engagement part 32b Engagement part H Heat source object W Worker

Claims (4)

A heat-resistant protective shield used to block heat from a heat source object.
A first heat-resistant protective unit having a predetermined shape-retaining property, the first heat-resistant protective unit including a window for viewing the heat source object through the first heat-resistant protective unit.
It is provided with a second heat-resistant protective unit that is continuously provided and has flexibility with the first heat-resistant protective unit.
Heat resistant shield. The first heat-resistant protection unit and the second heat-resistant protection unit are provided with a flexible heat-resistant fiber material.
The first heat-resistant protective unit includes a support frame for supporting the heat-resistant fiber material.
The heat-resistant protective shield according to claim 1. The second heat-resistant protection unit includes a length adjusting mechanism for adjusting the length of the second heat-resistant protection unit.
The heat-resistant protective shield according to claim 1 or 2. The window is made of chemically strengthened glass.
The heat-resistant protective shield according to any one of claims 1 to 3.

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