WO2018066280A1

WO2018066280A1 - Tension checking tool for lashing and method for producing same

Info

Publication number: WO2018066280A1
Application number: PCT/JP2017/031645
Authority: WO
Inventors: 健次西田; 英一郎池田
Original assignee: バンドー化学株式会社
Priority date: 2016-10-04
Filing date: 2017-09-01
Publication date: 2018-04-12
Also published as: DE112017005033B4; DE112017005033T5

Abstract

In this lashing tension checking tool (1) for checking the tension of a lashing band (B), a pair of supports (4) are aligned in the longitudinal direction of the lashing band (B) with an interval therebetween and a pair of side plates respectively disposed to both sides in the width direction of the lashing band (B) are connected to both ends of the pair of supports (4). A tension measurement part that is made to deform by a prescribed tension is provided to the pair of side plates between the pair of supports (4). At least the pair of side plates are formed from separate components and can be connected to the pair of supports (4) at the time of tension measurement. As a result, the lashing tension checking tool (1) makes it possible to use a simple and inexpensive configuration to check tension simply during lashing.

Description

Tightening tension checker and method for manufacturing the same

The present invention relates to a tension checking tool for lashing for checking the tension of a band for lashing and a method for manufacturing the same.

2. Description of the Related Art Conventionally, a clamping type tension measuring apparatus is known that sandwiches a band for lashing such as a belt during lashing and measures the tension of the band for tying. For example, as disclosed in Patent Document 1, a base portion having a pair of rotatable support rollers, a lid portion that is foldably connected to the base portion via a hinge portion, and that can be freely opened and closed, is incorporated in the back side of the lid portion. A pair of support rollers and a pressing portion provided on the back side of the lid portion and having a pressing portion disposed at an opposing position between the pair of supporting rollers and capable of pressing the load cell. There is known a pinching type tension measuring apparatus configured to be able to hold a band-like body for lashing in between. This tension measuring device has an advantage that it can measure the tension of the band for lashing while performing the tightening operation.

Japanese Patent No. 5972413

However, the tension measuring device as in Patent Document 1 has a large number of parts and a high manufacturing cost. Therefore, there is a need to check the tension at the time of lashing more easily and cheaply.

The present invention has been made in view of such points, and an object of the present invention is to make it possible to easily check the tension at the time of lashing with a simple and inexpensive configuration.

In order to achieve the above object, in the present invention, the tension confirmation tool for lashing is composed of split-type parts.

Specifically, in the first invention, the tension confirmation tool for lashing for confirming the tension of the band for lashing is premised.
A pair of struts arranged at intervals in the longitudinal direction of the lashing strip;
A pair of side plates respectively connected to both ends of the pair of struts and disposed on both sides in the width direction of the banding body for lashing;
A tension measuring unit provided on the pair of side plates between the pair of support columns and deformed with a predetermined tension;
At least the pair of side plates is formed of different parts, and is configured to be connectable to the pair of support columns at the time of tension measurement.

According to the above configuration, since the pair of side plates are formed of different parts, the pair of side plates is secured to some extent with the band for lashing, and the pair of side plates is unwound and unwound. By sandwiching the band for lashing between the support post and the tension measuring unit, and then connecting the other side plates, the tension can be measured. And, if the tension of the band for lashing is increased, the tension measuring part will be deformed or broken when the predetermined tension is exceeded, so the band for tying is larger than the predetermined tension. You can confirm that your body is tightened. If the tension measuring unit breaks, the pinching state of the band for securing is released, so that the tension confirmation tool for securing can be removed.

In the second invention, in the first invention,
The tension measuring unit is a pair of cantilever beams whose base ends are connected to the pair of side plates, respectively, and when viewed from the longitudinal direction of the tying band, the width direction of the tying band The middle part is Yamagata.

According to the above configuration, when a predetermined tension is applied to the band for lashing, a predetermined bending stress can be applied to the roots of the pair of cantilevers. For this reason, it is possible to check a relatively accurate tension with a simple configuration.

In the third invention, in the first or second invention,
The pair of struts has base ends connected to one of the pair of side plates, and a distal end side is engageable with a through hole provided in the other side plate.

According to the above configuration, one side plate side is fitted into the lashing strip in a state in which the object to be lashed is secured with the lashing strip, and then the tip of the pair of columns is inserted into the through hole of the other side plate. By engaging, the tension confirmation tool for lashing is easily fixed.

In a fourth invention, in any one of the first to third inventions,
At least one of the pair of side plates is further provided with a slip prevention portion that sandwiches the lashing band between the pair of struts even when the tension measuring portion is broken.

According to the above configuration, even when the tension measuring unit breaks, the securing tension checking tool remains in the securing strap, so that the securing strap is maintained at a predetermined tension. This can be confirmed visually.

In the fifth invention, in the fourth invention,
The drop prevention portion is a rod-like member that is provided on at least one of the pair of side plates and extends to the other side plate with a gap in the thickness direction of the tying band for the pair of support columns.

According to the above configuration, the drop prevention portion can be provided with a simple and easy configuration.

In a sixth invention, in any one of the first to third inventions,
A guide member that covers the tension measuring unit and abuts the band for securing,
And a stopper portion that prevents the guide member, which has been moved by being pressed by the tying band, when the tension measuring portion is broken, from further moving.

According to the above configuration, even when the tension measuring unit is broken, the guide member prevents the lashing tension checking tool from detaching from the tying band, so that the tying band is predetermined. It can be visually confirmed that the tension is maintained.

In the seventh invention, in the fourth invention,
The guide member is a cylindrical member surrounding the tension measuring unit,
The stopper portions are respectively provided at positions that prevent the end portions of the guide member from passing through the pair of side plates.

According to the above configuration, even when the tension measuring portion is broken, the broken pieces remain in the guide member. In addition, since the broken tension measuring portion remains in the guide member, the lashing tension checker is not caught and easily removed when the tying band is loosened.

In an eighth aspect of the invention, there is provided a method of manufacturing a tension confirmation tool for lashing according to any one of the first to seventh aspects of the invention,
By changing the shape of the nesting of the injection mold when the tension measuring part is molded, the sectional shape of the connecting part between the tension measuring part for detecting the load and the side plate is changed.

According to the above configuration, it is possible to easily change the cross-sectional area of the connecting portion of the tension measuring unit simply by changing the shape of the mold insert during injection molding of the securing tension check tool. That is, by using different inserts, it is possible to manufacture a tension confirmation tool for lashing that allows confirmation of different tensions with the same mold.

As described above, according to the present invention, the pair of side plates of the tension checking tool for lashing are configured by separate parts, and can be connected to the pair of support columns when measuring the tension. Thus, the tension can be easily confirmed in a state where the object to be secured is secured with the band for securing.

It is a perspective view which shows the tension confirmation tool for lashing concerning Embodiment 1 of this invention. It is the perspective view which looked at the tension confirmation tool for lashing concerning Embodiment 1 of the present invention from another direction. It is a side view which shows a 1st member. FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. It is a perspective view which shows a 1st member. It is the perspective view which looked at the 1st member from another direction. It is a perspective view which shows a 2nd member. It is the perspective view which looked at the 2nd member from another direction. It is sectional drawing seen from the width direction of the strip | belt body for binding which shows the relationship between the tension | tensile_strength of the strip | belt body for binding, and a perpendicular load. It is sectional drawing seen from the longitudinal direction of the strip | belt body for securing which shows the relationship of the load applied to a 1st tension measurement part. It is a bending moment diagram concerning the 1st tension measurement part. It is a perspective view which shows the tension confirmation tool for lashing concerning Embodiment 2 of this invention. It is the perspective view which looked at the tension confirmation tool for lashing concerning Embodiment 2 of the present invention from another direction. It is a side view which shows a 1st member. FIG. 12 is a cross-sectional view taken along line XII-XII in FIG. 11. It is a perspective view which shows a 1st member. It is the perspective view which looked at the 1st member from another direction. It is sectional drawing seen from the width direction of the strip | belt body for binding which shows the relationship between the tension | tensile_strength of the strip | belt body for binding, and a perpendicular load. It is a perspective view which shows the tension confirmation tool for lashing concerning Embodiment 3 of this invention. It is a perspective view which shows the tension confirmation tool for lashing which abbreviate | omitted the 2nd side plate. It is the perspective view equivalent to FIG. 15B seen from another angle. It is a side view which shows the tension confirmation tool for lashing which abbreviate | omitted the 2nd side plate. FIG. 15D is a side view corresponding to FIG. 15D after the tension measurement unit is broken.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
1 and 2 show a tension checking tool 1 for lashing according to Embodiment 1 of the present invention. This tension checking tool 1 for lashing has a rubber band having a divided structure of a first member 2 and a second member 3. It is a part for confirming the tension of the band B for lashing. The tension confirmation tool 1 for lashing consists of a resin molded product, for example. The band for binding B can be composed of a rubber band, a steel band, a synthetic resin fiber, a metal fiber, or the like. For example, the tying band B is obtained by cutting a tire tube having a thickness of 2 mm into a width of 22 mm.

As shown in FIGS. 3 and 4, the first member 2 has a pair of struts 4 arranged at intervals in the longitudinal direction of the band B for lashing, and one sheet for connecting the pair of struts 4. The first side plate 5 is integrally formed. Although the cross-sectional shape of the support column 4 is not particularly limited, in the present embodiment, it is preferably a rectangular shape, and it is desirable that the lower surface with which the tying band B is in contact is rounded. A pair of support | pillar 4 is provided above the 1st side board 5, and the engaging part 4a which has a crack is provided in the front-end | tip. A deformation notch 4b is provided at the center of the engaging portion 4a, and is easily deformed when inserted into a through hole 7a described later. A first tension measuring unit 6 is integrally formed between the pair of support columns 4 and below the first side plate 5. The first connecting portion 6a at the base of the first tension measuring unit 6 has a small cross section so as to be easily broken compared to other portions. For example, the first connecting portion 6a has a rectangular cross-sectional shape. The portion of the upper surface 6b of the first tension measuring unit 6 where the tying band B comes into contact is, for example, rounded with a radius of 5 mm in cross section, as shown in FIGS. 4, 5A and 5B. When viewed from the longitudinal direction of the belt-like body B, it is curved like a mountain. As for the front-end | tip part 6c of the 1st tension | tensile_strength measurement part 6, the center is thin about 1/3 in thickness.

On the other hand, as shown in FIGS. 6A and 6B, the second member 3 has a second side plate 7 having substantially the same shape as the first side plate 5, and the second side plate 7 is associated with a pair of support columns 4. A pair of substantially-shaped through holes 7a into which the joint portions 4a are inserted are formed. A second tension measuring unit 8 is integrally formed between the pair of through holes 7 a of the second side plate 7 and below the second side plate 7. Similar to the first connection portion 6a, the second connection portion 8a at the base of the second tension measuring portion 8 has a small cross section so that it can be easily broken compared to other portions. The portion of the upper surface 8b of the second tension measuring unit 8 with which the tying band B comes into contact is, for example, rounded with a radius of 5 mm in cross section, and has a mountain shape when viewed from the longitudinal direction of the tying band B. It is curved. The tip 8c of the second tension measuring unit 8 is divided into two forks so that the tip 6c of the first tension measuring unit 6 is inserted.

As shown in FIGS. 1, 2, and 4, when the first member 2 and the second member 3 are combined, the distal end portion 6c and the distal end portion 8c are engaged with each other, When viewed from the longitudinal direction of B, the upper surface 6b and the upper surface 8b are substantially continuous.

-Example-
For example, the lashing tension checker 1 is formed of an ABS resin molded product. The ABS resin has a tensile elasticity of 2,550 MPa, a tensile strength of 52 MPa, and a bending strength of 82 MPa.

Next, when a tension T is applied to the band B for lashing, a vertical load F acting on the first tension measuring unit 6 is obtained. In addition, the load, bending stress, etc. which act on the 2nd tension measurement part 8 are calculated | required similarly.

As shown in FIG. 7, when the tying band B is pulled with a tension T, a vertical load F is applied to the first tension measuring unit 6. At this time, if the friction coefficient between the first tension measuring unit 6 and the band for binding B is ignored,
F = 2Tsinθ (1)
It becomes. Here, T is the tension (kgf) of the band B for tying, F is the vertical load (kgf) applied to the first tension measuring unit 6, and θ is the inclination angle of the band B for tying ( °). For example, when θ = 19.2 ° and the tension T is 3 kgf, F = 1.973 kgf.

Next, the bending stress generated at the base of the first tension measuring unit 6 is calculated. When the tension of the band for binding B increases, the bending stress derived from the base of the first tension measuring unit 6 increases and eventually breaks down. This is considered as a cantilever beam, and it is assumed that the load is evenly applied to the first tension measuring unit 6 as shown in FIG. 8A. The cross-sectional shape at the base of the first tension measuring unit 6 is a quadrangle having a width bmm and a height hmm. When a load f is applied to the first tension measuring unit 6, a bending moment M is generated as shown in FIG. 8B, and a maximum bending stress σ _b kgf / mm ² is generated on the surface on the pulling side. At this time, equation (2) holds.

M = fL (2)
Since f is 1/2 of the load F applied from the band B for lashing, Formula (3) is materialized.

M = FL / 2 (3)
The section modulus Zmm ³ of the first connecting portion 6a of the first tension measuring unit 6 is
^{Z = bh 2/6 ... (} 4)
It becomes. Therefore, the maximum bending stress σ _b generated in the first connecting portion 6a is _expressed by the following equations (3) and (4): σ _b = M / Z = FL / 2 × 6 / bh ² = 3FL / bh ² (5)
It becomes. Further, from the equation (5), the following equation (6) is obtained.

By substituting the fracture strength of the material for σ _b , an appropriate cross-sectional shape can be obtained. In this design, for example, if L = 12 mm, b = 3 mm, and σ _b = 82 MPa = 8.3 kgf / mm ² ,

It becomes. Similarly, when the tension T is 6 kgf and 9 kgf, the same calculation is performed, so that h becomes 2.39 mm and 2.93 mm, respectively. Thereby, the height h corresponding to each tension T is calculated.

As described above, in the present embodiment, the pair of

side plates

5 and 7 are configured by the

separate parts

2 and 3, respectively, and can be connected to the pair of support columns 4 at the time of measuring the tension. In a state in which the object to be secured is secured to a certain extent, the pair of struts 4 of the first member 2 and the first tension measuring unit 6 sandwich the securing band B without unwinding the securing band B. Thereafter, the second side plate 7 of the second member 3 is connected to be in a state where tension can be measured. When the second tension measuring unit 8 is fitted under the lashing band B, the upper surface is curved in a mountain shape, so that it can be easily inserted.

As described above, since the engaging portion 4a on the distal end side of the pair of support columns 4 whose proximal ends are connected to the first side plate 5 can be engaged with the through holes 7a provided in the second side plate 7, The first side plate 5 side is fitted into the lashing band B in a state where the object to be lashed is secured by the band B, and then the engaging portions 4a of the pair of columns 4 are inserted into the through holes 7a of the second side plate 7. Can be easily fixed.

If the tension of the band for binding B is increased, when a predetermined tension set in advance is exceeded, at least one of the first tension measuring unit 6 and the second tension measuring unit 8 is deformed or broken. Therefore, it can be confirmed that the tying band B is tightened with a tension larger than a predetermined tension. If the tension measuring unit breaks, the pinching state of the tying band B is released, so that the tying tension checker 1 can be detached from the tying band B.

The first and second

tension measuring units

6 and 8 are a pair of cantilever beams whose base ends are connected to the pair of

side plates

5 and 7, respectively, and when viewed from the longitudinal direction of the band for binding B, Since the intermediate portion in the width direction of the tying band B has a mountain shape, when a predetermined tension is applied to the tying band B, a predetermined bending stress is applied to the roots of the pair of cantilever beams. it can. For this reason, it is possible to check a relatively accurate tension with a simple configuration.

Therefore, according to the tension confirmation tool 1 for lashing according to the present embodiment, the tension can be easily confirmed with a simple and inexpensive configuration while the object to be secured is secured with the band B for lashing.

-Manufacturing method of tension confirmation tool for lashing-
The tension confirmation tool 1 for lashing of the said Embodiment 1 is manufactured by injection molding of molten resin material, for example.

Although not shown in detail, when the first and second

tension measuring units

6 and 8 are molded, the shape of the nesting of the injection mold is changed, and the cut height H of the first connecting unit 6a and the second connecting unit 8a is changed. By changing, the cross-sectional shape of the 1st connection part 6a and the 2nd connection part 8a which detect a load can be changed. *

For example, by changing to H = 0 mm, 0.6 mm, and 1.3 mm, it is possible to manufacture the lashing tension checker 1 having a measurable tension T of 9 kgf, 6 kgf, and 3 kgf. The first embodiment exemplifies a case where H = 3 kgf.

Thus, it is possible to easily change the cross-sectional areas of the connecting

portions

6a and 8a of the

tension measuring portions

6 and 8 only by changing the shape of the nesting of the mold during the injection molding of the tension confirmation tool 1 for lashing. In other words, by using different inserts, it is possible to manufacture the lashing tension checker 1 capable of checking different tensions with the same mold.

(Embodiment 2)
9 to 14 show a lashing tension checking device 101 according to Embodiment 2 of the present invention, which is different from Embodiment 1 in that a drop prevention portion 104 is provided. In the present embodiment, the same parts as those in FIGS. 1 to 8B are denoted by the same reference numerals, and detailed description thereof is omitted.

That is, in the tension confirmation tool 101 for lashing according to the present embodiment, a pair of drop prevention portions 104 are respectively formed immediately below the pair of columns 4 on the first side plate 5. The drop prevention unit 104 is, for example, a rod-shaped member that is formed in a rectangular cross section that is narrower than the pair of support columns 4. It should be noted that the drop prevention unit 104 does not need to be provided directly below the support column 4, may be provided at a shifted position, and may have a circular cross section or the like. In short, by providing the pair of drop prevention parts 104, even if at least one of the first tension measurement part 6 and the second tension measurement part 8 breaks, the pair of struts 4 and the pair of drop prevention parts 104 It is sufficient that the state in which the band B for lashing is sandwiched therebetween is maintained, and the tension confirmation tool 101 for lashing is configured not to fall out of the band B for lashing.

In the use state of the tension confirmation tool 101 for lashing, a gap H is secured between the pair of drop prevention portions 104 and the second side plate 7. This is because when the engaging portion 4a at the tip of the support column 4 is inserted and engaged with the through hole 7a of the second side plate 7, the engaging portion 4a can be removed from the through hole 7a. The root is surely hooked to the periphery of the through hole 7a. The gap H is preferably narrower than the thickness of the band for binding B. This is to prevent the lashing tension checking tool 101 from falling out of the lashing band B.

By configuring in this way, it can be visually confirmed that the band B for lashing is maintained at a predetermined tension.

Therefore, according to the tension checking tool 101 for binding according to the present embodiment, even if the first tension measuring unit 6 and the second tension measuring unit 8 are broken with a simple and inexpensive configuration, The tension can be easily confirmed in the state where the object to be bound B remains and the object to be secured is secured in the band B for binding.

Moreover, in this embodiment, since only a pair of receiving prevention part 104 was provided in the securing tension confirmation tool 1 of the said Embodiment 1, it can shape | mold easily by injection molding similarly to the said Embodiment 1. FIG. it can.

In the second embodiment, the pair of drop prevention portions 104 are formed so that their proximal ends are connected to the first side plate 5, but may be connected to the second side plate 7, and one piece is provided on the first side plate 5. They may be connected and connected to the second side plate 7. Further, two short omission prevention portions may be connected to the first side plate 5 and the second side plate 7, respectively, and abutted against each other.

(Embodiment 3)
15A to 15E show a securing tension checking tool 201 according to Embodiment 3 of the present invention, which is different from Embodiment 1 in that a guide member 209 and a stopper portion 210 are mainly provided.

The lashing tension checking tool 201 of the present embodiment includes a guide member 209 that covers the first tension measuring unit 6 and the second tension measuring unit 8 and against which the tying band B is in contact. Specifically, the guide member 209 is formed of a cylindrical member made of, for example, a resin molded product, and substantially includes the chevron-shaped contact surface 209a, the first tension measuring unit 6, and the second tension measuring unit 8. A cylindrical portion 209b that completely covers the entire circumference and a pair of flanges 209c that extend continuously on both sides of the contact surface 209a, and the first tension measuring unit 6 and the second tension measuring unit are provided in the cylindrical portion 209b. A measuring portion accommodating portion 209d for accommodating 8 is formed.

The first side plate 5 and the second side plate 7 have guide members 209 that have been moved by being pressed by the lashing band B when the first tension measuring unit 6 and the second tension measuring unit 8 are broken. Each of the stoppers 210 is provided so as to integrally protrude. The stopper portion 210 is provided at each of the lower ends of the first side plate 5 and the second side plate 7 and has a substantially U shape (substantially U shape) in bottom view. Each stopper portion 210 includes a concave portion 210a through which the cylindrical portion 209b can pass, and a pair of flange contact portions 210b with which the pair of flange portions 209c abut. That is, the flange contact portion 210 b is provided at a position where the end of the guide member 209 on the first side plate 5 and the second side plate 7 is prevented from passing.

In the present embodiment, even when the first tension measuring unit 6 and the second tension measuring unit 8 are broken, the guide member 209 is detached from the tying belt B for the tying tension checker 201. Therefore, it can be confirmed surely and easily visually that the band B for lashing is maintained at a predetermined tension.

In this embodiment, even when the first tension measuring unit 6 and the second tension measuring unit 8 are broken, the fragments remain in the guide member 209. Since the first tension measuring unit 6 and the second tension measuring unit 8 that have been broken in this way remain in the guide member 209, they are not caught when the band for binding B is loosened, and the band for binding B It is easy to remove the tension confirmation tool 201 for lashing.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

That is, in each said embodiment, although a pair of support | pillar 4 is provided in the 1st side plate 5 and a pair of through-hole 7a is provided in the 2nd side plate 7, one support | pillar 4 is provided in the 1st side plate 5, and it respond | corresponds to it One through hole 7a may be provided in the second side plate 7, the other support column 4 may be provided in the second side plate 7, and the other through hole 7a corresponding thereto may be provided in the first side plate 5.

In addition, the above embodiment is an essentially preferable example, and is not intended to limit the scope of the present invention, its application, and use.

DESCRIPTION OF SYMBOLS 1 Tightening tension confirmation tool 2 1st member 3 2nd member 4 Support | pillar

4a Engagement part

4b Deformation notch 5 1st side plate 6 1st tension measurement part 6a 1st connection part

6b Upper surface

6c Tip part 7 2nd side plate 7a Through hole 8 Second tension measuring part 8a Second connecting part

8b Upper surface

8c Tip part 101 Tightening tension checker
104 Prevention part
201 Tension confirmation tool for lashing
209 Guide member
209a Contact surface
209b Tubular part
209c Buttocks
209d Measuring unit housing
210 Stopper
210a Concave part 210b Bump contact part B Securing belt

Claims

In the tension checker for securing the strap for confirming the tension of the strap for securing,
A pair of struts arranged at intervals in the longitudinal direction of the lashing strip;
A pair of side plates respectively connected to both ends of the pair of struts and disposed on both sides in the width direction of the banding body for lashing;
A tension measuring unit provided on the pair of side plates between the pair of support columns and deformed with a predetermined tension;
At least a pair of said side plates are each comprised by another component, and are comprised so that it can be connected with a pair of said support | pillar at the time of tension | tensile_strength measurement, The tension confirmation tool for lashing characterized by the above-mentioned.
The tension confirmation tool for lashing according to claim 1,
The tension measuring unit is a pair of cantilever beams whose base ends are connected to the pair of side plates, respectively, and when viewed from the longitudinal direction of the tying band, the width direction of the tying band A tension checking tool for lashing, characterized in that the middle part is a mountain shape.
In the tension confirmation tool for lashing according to claim 1 or 2,
The pair of struts has a proximal end connected to one of the pair of side plates, and a distal end side that can be engaged with a through-hole provided in the other side plate. Confirmation tool.
In the tension confirmation tool for lashing according to any one of claims 1 to 3,
At least one of the pair of side plates is further provided with a slip-out preventing portion that sandwiches the lashing band between the pair of struts even when the tension measuring portion is broken. Tension confirmation tool for lashing.
In the tension confirmation tool for lashing according to claim 4,
The drop-off prevention portion is a rod-like member provided on at least one of the pair of side plates and spaced from the pair of support posts in the thickness direction of the tying strip. Tension confirmation tool for lashing.
In the tension confirmation tool for lashing according to any one of claims 1 to 3,
A guide member that covers the tension measuring unit and abuts the band for securing,
A tension for lashing, further comprising a stopper portion for preventing the guide member that has been moved by being pressed by the lashing band when the tension measuring portion is broken. Confirmation tool.
In the tension confirmation tool for lashing according to claim 6,
The guide member is a cylindrical member surrounding the tension measuring unit,
The lashing tension check tool according to claim 1, wherein the stopper portions are provided at positions that prevent the end portions of the guide members from passing through the pair of side plates.
It is a manufacturing method of the tension confirmation tool for lashing according to any one of claims 1 to 7,
The tying is characterized in that the cross-sectional shape of the connecting part between the tension measuring part for detecting the load and the side plate is changed by changing the shape of the nesting of the injection mold when molding the tension measuring part. Of manufacturing a tension confirmation tool for use.