Support strut

Abstract

To provide a support column capable of being easily attached to an annular body.SOLUTION: The support strut 1 is a support strut for locking a safety maintenance tool of a worker by utilizing an annular body 102 provided in advance at an installation place, and is provided with an engaging member 10 having a hook part 11 engaged with the annular body 102 and a male screw part 12 extending from the hook part 11, a strut part 20 having a female screw part 21c with which the male screw part 12 is screwed at least on one end side, and a base member 30 having a through-hole 36 through which the male screw part 12 can be penetrated without penetrating one end side of the strut part 20 on an upper part in a state where the hook part 11 is engaged with the annular body 102.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a support post for anchoring a worker safety device using a pre-installed loop at the installation location. [Background technology]

[0002] Various large pieces of equipment, such as cubicle-type power receiving equipment, are installed on the ground or on the roof of a building. Various work may be performed above such cubicle-type equipment. With large cubicle-type equipment, even if it is installed on the ground, work is performed at high altitudes, so the use of safety harnesses is necessary to prevent the risk of falling. These safety harnesses are used by connecting them to lifelines, etc. Therefore, even with cubicle-type equipment, it is necessary to properly attach lifelines, etc.

[0003] Many types of large equipment, such as cubicle-type power receiving equipment, are equipped with ring-shaped objects called eyebolts, hanging bolts, hanging rings, etc., for use in hoisting the equipment. Patent Document 1 discloses a technology that uses these ring-shaped objects to install support posts for attaching safety equipment for workers, such as life ropes. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-312891 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the technology disclosed in Patent Document 1 has a complicated structure for the connecting part that connects to the annular body, making the connecting work not easy. In particular, the delicate work of inserting the locking pin into the small pin hole in the inserting body is required, and there is a problem in that performing such delicate work at a high altitude is dangerous.

[0006] An object of the present disclosure is to provide a support strut that can be easily attached to an annular body. [Means for solving the problem]

[0007] The present disclosure solves the above-mentioned problems by the following solutions. Note that, for ease of understanding, the following description will be given with reference numerals corresponding to the embodiments of the present disclosure, but the present disclosure is not limited to these.

[0008] The first disclosure is a support pillar (1) for engaging a worker's safety maintenance device by utilizing a ring-shaped body (102) provided in advance at the installation location, the support pillar (1) comprising: an engaging member (10) having a hook portion (11) that engages with the ring-shaped body (102) and a male threaded portion (12) extending from the hook portion (11); a support pillar (20) having a female threaded portion (21c) at at least one end into which the male threaded portion (12) screws; and a base member (30) that covers the ring-shaped body (102) and the hook portion (11) when the hook portion (11) is engaged with the ring-shaped body (102), and has a through hole (36) at the top through which the male threaded portion (12) can pass, but not through which the one end of the support pillar (20) passes.

[0009] The second disclosure is the support pole (1) described in the first disclosure, characterized in that the support pole portion (20) consists of a plurality of support pole members (21, 22, 23, 24) that can be freely separated and connected, and at least a portion (22, 24) of the support pole members (21, 22, 23, 24) have instrument locking portions (22d, 24a) that can lock the safety maintenance instrument.

[0010] The third disclosure is the support pillar (1) described in the first or second disclosure, characterized in that the contact surfaces (31a, 32a, 34a, 35a) of the base member (30) that contact the installation location are connected so as to surround the entire circumference of the annular body (102) when the hook portion (11) is engaged with the annular body (102), and the side of the base member (30) has openings (30a, 30b) that open on at least two different sides.

[0011] The fourth disclosure is a support pillar (1) described in any one of the first to third disclosures, characterized in that at least a portion of the support pillar portion (20) has a cylindrical outer diameter shape, and the diameter of the cylindrical shape conforms to the outer diameter of a single-tube pipe used for scaffolding pipes. [Effects of the Invention]

[0012] According to the present disclosure, a support column that can be easily attached to an annular body can be provided. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a diagram showing a state in which a support pole 1 according to the present disclosure is used. [Figure 2] FIG. 1 is a diagram showing the support column 1 disassembled into individual parts together with the ring-shaped body 102. [Figure 3] FIG. 2 is a perspective view of the base member 30 as seen from below, on the contact surface side. [Figure 4] 1A and 1B are diagrams showing an example of how the support pole 1 is used. [Figure 5] 10A and 10B are diagrams showing other examples of how the support pole 1 is used. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings.

[0015] (Embodiment) FIG. 1 is a diagram showing a state in which a support pole 1 according to the present disclosure is in use. FIG. 2 is a diagram showing the support pole 1 disassembled into individual parts together with a ring-shaped body 102. Note that the figures shown below, including FIGS. 1 and 2, are schematic diagrams, and the size and shape of each part are exaggerated or omitted as appropriate for ease of understanding. In addition, the following explanation will be given using specific numerical values, shapes, materials, etc., but these can be changed as appropriate.

[0016] The support pole 1 of this embodiment includes an engaging member 10, a support pole portion 20, and a base member 30. The engaging member 10, the support pole portion 20, and the base member 30 are all formed from a metal material such as iron.

[0017] Here, the support pillar 1 will be described as being installed using a ring-shaped body 102 provided on electrical equipment 100, such as a cubicle-type substation, power generation equipment, or battery storage equipment. The ring-shaped body 102 is widely used and is called an eye bolt, a hanging bolt, a hanging ring, or the like. The ring-shaped body 102 is a bolt with a circular ring at its head, and is specified in, for example, JIS B1168. However, the support pillar 1 of the present disclosure is not limited to being installed on a ring-shaped body 102 provided on electrical equipment 100, and may be installed using a ring-shaped body provided directly on the roof of a building, and the installation object can be changed as appropriate.

[0018] The engaging member 10 has a hook portion 11 and a male thread portion 12. The hook portion 11 is curved and partially open, i.e., formed in a roughly fishhook shape, and engages with the annular body 102 when in use. The male thread portion 12 extends from the hook portion. When in use, the male thread portion 12 screws into a female thread portion 21c of the first support member 21, which will be described later. The shape of the hook portion 11 is configured so that it will not disengage from the annular body 102 even when torque acting on the hook portion 11 to rotate it around the central axis of the male thread portion 12 acts on it. In addition, the appropriate dimensions of the hook portion 11 vary depending on the size of the annular body 102 to be engaged with. Therefore, multiple types of engaging members 10 may be prepared, each with a hook portion 11 of a size that matches the size of the annular body 102 to be engaged with.

[0019] The support section 20 has a first support member 21, a second support member 22, a third support member 23, and a fourth support member 24. These first support member 21, second support member 22, third support member 23, and fourth support member 24 can be separated and connected freely, and can be used in a form in which all of them are used as shown in Fig. 1, or in a form in which some of them are not used and are selectively combined as appropriate. Furthermore, other types of support members than the first support member 21, second support member 22, third support member 23, and fourth support member 24 may be prepared, or it is not necessary to prepare all of the above.

[0020] The first support member 21 has a columnar portion 21a, a flange portion 21b, a female thread portion 21c, and a connecting female thread portion 21d. The length of the first support member 21 in the longitudinal direction is not particularly limited, but can be, for example, about 200 mm to 300 mm. In this embodiment, the length of the first support member 21 in the longitudinal direction is 270 mm.

[0021] The columnar portion 21a is formed in a cylindrical shape. In this embodiment, the columnar portion 21a is configured to be hollow by utilizing a pipe having a cylindrical shape for the most part. The columnar portion 21a is configured by welding a substantially disk-shaped member for configuring the connecting female thread portion 21d to the end of the pipe portion opposite the flange portion 21b. Note that the joining line between the pipe portion and the disk-shaped member is omitted in the illustration, and they are shown as one unit. Furthermore, the columnar portion 21a is not limited to the hollow configuration using the pipe described above, and the columnar portion may be configured from a solid material.

[0022] The flange portion 21b is provided so as to widen like a brim at one end of the first support member 21. The flange portion 21b is formed by welding a disk-shaped member having an outer diameter larger than that of the columnar portion 21a to the end of the columnar portion 21a.

[0023] The female thread portion 21c is formed in the center of the flange portion 21b and has a female thread shape. In use, the male thread portion 12 of the engaging member 10 is screwed into the female thread portion 21c.

[0024] The connecting female thread portion 21d is in the form of a female thread provided at the other end of the first support member 21, that is, at the end opposite to the flange portion 21b.

[0025] The second support member 22 has a pillar-shaped portion 22a, a connecting male thread portion 22b, a connecting female thread portion 22c, and an instrument locking portion 22d. The length of the second support member 22 in the direction along which the pillar-shaped portion 22a extends is not particularly limited, but can be, for example, about 50 mm to 200 mm. In this embodiment, the length of the second support member 22 in the longitudinal direction is 100 mm.

[0026] The columnar portion 22a is formed in a cylindrical shape. In this embodiment, the columnar portion 22a is configured to be hollow using a cylindrical pipe for the majority of the portion. The columnar portion 22a is configured by welding a substantially disk-shaped member for configuring the connecting male thread portion 22b and a substantially disk-shaped member for configuring the connecting female thread portion 22c to the end of the portion using the pipe. Note that the joining line between the pipe portion and the disk-shaped member is omitted in the illustration, and the columnar portion is shown as a single unit. Furthermore, the columnar portion 22a is not limited to the hollow configuration using the pipe described above, and the columnar portion may be configured from a solid material.

[0027] The connecting male thread portion 22b is provided at one end of the second support member 22 and has a male thread shape.

[0028] The connecting female thread portion 22c is in the form of a female thread provided at the other end of the second support member 22, that is, at the end opposite to the connecting male thread portion 22b.

[0029] The tool locking portion 22d is provided on the outer periphery of the columnar portion 22a, protruding outward. In this embodiment, the tool locking portion 22d is formed by welding an approximately U-shaped linear body with its open end to the columnar portion 22a. The shape of the tool locking portion 22d may be other shapes, such as a circular ring shape or a substantially rectangular ring shape. Furthermore, the tool locking portion 22d is provided at four locations approximately equiangularly around the outer periphery of the columnar portion 22a. The number of tool locking portions 22d can be changed as appropriate. Safety equipment such as life ropes to ensure the safety of workers can be locked to the tool locking portion 22d.

[0030] The third support member 23 has a pillar-shaped portion 23a, a connecting male thread portion 23b, and a connecting female thread portion 23c. The longitudinal length of the third support member 23 is not particularly limited, but can be, for example, about 400 mm to 600 mm. In this embodiment, the longitudinal length of the third support member 23 is 550 mm. In this embodiment, the longitudinal length of the third support member 23 is approximately twice the longitudinal length of the first support member 21.

[0031] The columnar portion 23a is formed in a cylindrical shape. In this embodiment, the columnar portion 23a is configured to be hollow using a cylindrical pipe for the majority of the portion. The columnar portion 23a is configured by welding a substantially disk-shaped member for configuring the connecting male thread portion 23b and a substantially disk-shaped member for configuring the connecting female thread portion 23c to the end of the portion using the pipe. Note that the joining line between the pipe portion and the disk-shaped member is omitted in the illustration, and the columnar portion is shown as a single unit. Furthermore, the columnar portion 23a is not limited to the hollow configuration using the pipe described above, and the columnar portion may be configured from a solid material.

[0032] The connecting male thread portion 23b is provided at one end of the third support member 23 and has a male thread shape.

[0033] The connecting female thread portion 23c is in the form of a female thread provided at the other end of the third support member 23, that is, at the end opposite to the connecting male thread portion 23b.

[0034] The fourth support member 24 has an instrument locking portion 24a and a connecting male thread portion 24b.

[0035] The tool locking portion 24a is formed in a circular ring shape, and can be used to lock a safety tool such as a lifeline to ensure the safety of workers.

[0036] The connecting male thread portion 24b is provided at one end of the fourth support member 24 and has a male thread shape.

[0037] The fourth support member 24 has a configuration that is substantially similar to that of a commercially available eyebolt, and therefore a commercially available eyebolt may be used.

[0038] The above-mentioned connecting female threaded portion 21d, connecting male threaded portion 22b, connecting female threaded portion 22c, connecting male threaded portion 23b, connecting female threaded portion 23c, and connecting male threaded portion 24b are all standardized to the same thread standard, for example, a nominal thread diameter of M16, etc. In this way, the support portion 20 is made up of a plurality of support members (first support member 21, second support member 22, third support member 23, and fourth support member 24) that can be freely separated and connected.

[0039] Therefore, the connection configuration is not limited to the one shown in Fig. 1 , and for example, the second support member 22 may be removed from the connection configuration in Fig. 1 and the first support member 21 and the third support member 23 may be directly connected. Also, another second support member 22 may be added and attached in place of the fourth support member 24. Furthermore, the connection configuration in Fig. 1 may be used with the third support member 23 and the fourth support member 24 removed. In this way, the support unit 20 of this embodiment is not limited to the connection configuration exemplified in Fig. 1 and the connection configuration exemplified above, and the usage configuration can be flexibly changed to suit the site.

[0040] Furthermore, the columnar portions 21a, 22a, and 23a all have the same outer diameter, which conforms to the outer diameter of a single-tube pipe used for scaffolding pipes. In this embodiment, the columnar portions 21a, 22a, and 23a all have a diameter of approximately 48.6 mm, which conforms to JIS G3444. This point will be described in detail later.

[0041] FIG. 3 is a perspective view of the base member 30 as seen from below, the side that contacts the installation location. The base member 30 is disposed to cover the annular body 102 and the hook portion 11 when the hook portion 11 is engaged with the annular body 102 in use, and serves as the base of the support pole 1. The base member 30 of this embodiment has a first side wall 31, a second side wall 32, an upper surface portion 33, a first lower end reinforcement portion 34, and a second lower end reinforcement portion 35, and has a generally rectangular parallelepiped shape when viewed macroscopically. The external dimensions of the base member 30 are not particularly limited, but the length of each side can be, for example, approximately 100 mm to 200 mm. In this embodiment, the external dimensions of the base member 30 are such that the height direction side length in FIGS. 1 and 2 is 185 mm, and the width direction side length and the depth direction side length are 125 mm.

[0042] The first side wall 31 and the second side wall 32 are disposed opposite each other and constitute two side surfaces of the base member. Both the first side wall 31 and the second side wall 32 are formed in a flat plate shape. The lower end surfaces of the first side wall 31 and the second side wall 32 respectively form contact surfaces 31a and 32a that come into contact with the upper surface 101 of the installation location.

[0043] The top surface portion 33 is a flat plate-like portion that forms the ceiling portion of the base member 30. A through-hole 36 is provided in the center of the top surface portion 33. This through-hole 36 opens to a size that does not allow one end side of the support portion 20, more specifically, the flange portion 21b of the first support member 21, to pass through, but allows the male thread portion 12 of the engaging member 10 to pass through.

[0044] In this embodiment, the first side wall 31, the upper surface portion 33, and the second side wall 32 are formed as a single continuous member. The first side wall 31, the upper surface portion 33, and the second side wall 32 are formed into a generally U-shape by bending or pressing a single metal plate. The first side wall 31, the upper surface portion 33, and the second side wall 32 may also be formed by cutting a steel material extending with a generally U-shaped cross section. The connection portion between the first side wall 31 and the upper surface portion 33 and the connection portion between the upper surface portion 33 and the second side wall 32 are both curved surfaces. By forming these connection portions as curved surfaces, stress concentration can be alleviated, and the strength of the base member 30 can be increased.

[0045] The first lower end reinforcement portion 34 is a substantially rectangular parallelepiped plate member provided by connecting the lower end sides of the first side wall 31 and the second side wall 32, i.e., the ends on the contact surface 31a and contact surface 32a sides of each. The first lower end reinforcement portion 34 is welded to one of the end faces of the first side wall 31 and the second side wall 32 that intersects with the wall surfaces of the first side wall 31 and the second side wall 32. The lower end surface of the first lower end reinforcement portion 34 forms a contact surface 34a that contacts the upper surface 101 of the installation location.

[0046] The second lower end reinforcement portion 35 is a substantially rectangular parallelepiped plate member provided on the lower end sides of the first side wall 31 and the second side wall 32, i.e., connecting the ends on the contact surface 31a and contact surface 32a sides of each. The second lower end reinforcement portion 35 is provided opposite the first lower end reinforcement portion 34. The second lower end reinforcement portion 35 is welded to the other end face of the first side wall 31 and the second side wall 32 that intersects with the wall surfaces of the first side wall 31 and the second side wall 32, i.e., the end face opposite the end face on which the first lower end reinforcement portion 34 is provided. The lower end face of the second lower end reinforcement portion 35 forms a contact surface 35a that contacts the upper surface 101 of the installation location.

[0047] The above-mentioned contact surfaces 31a, 32a, 34a, and 35a form the same plane. These contact surfaces 31a, 32a, 34a, and 35a are connected to surround the entire circumference of the annular body 102 when the hook portion 11 is engaged with the annular body 102. With this configuration, the base member 30 can more reliably contact the upper surface 101 of the installation location and stably support the support pole 1, regardless of the direction in which the support pole portion 20 is subjected to an external force.

[0048] The sides of the base member excluding the first side wall 31 and the second side wall 32 are formed as openings 30a and 30b on different sides. By providing these openings 30a and 30b, it is not necessary to perform the work by feel when installing the support pole 1, and workability can be improved.

[0049] Furthermore, a rectangular opening 30c is formed on the lower end side of the base member 30. This opening 30c is large enough to allow both the annular body 102 and the hook portion 11 to pass through.

[0050] Next, we will explain the installation method for installing the support pole 1 of this embodiment. Note that although the installation method will be specifically explained below, this installation method is just one example, and the order in which each part is arranged and connected can be changed as appropriate.

[0051] To install the support pole 1, for example, first, the hook portion 11 of the engaging member 10 is engaged with the annular body 102 (arrow A in FIG. 2).

[0052] Next, the base member 30 is placed at the installation location while the male thread portion 12 of the engaging member 10 is inserted through the through-hole 36 (arrow B in FIG. 2). At this time, the base member 30 is configured to cover the annular body 102 and the hook portion 11.

[0053] Next, the first support member 21 is placed at a position where the female thread portion 21c of the first support member 21 corresponds to the tip of the male thread portion 12 protruding upward from the base member 30 (arrow C in FIG. 2).

[0054] Next, the first support member 21 is rotated to screw the male threaded portion 12 into the female threaded portion 21c, and the flange portion 21b is brought into sufficient contact with the upper surface portion 33, thereby fixing the first support member 21 to the base member 30 (arrow D in Figure 2).

[0055] Thereafter, as necessary, the second support member 22, the third support member 23, and the fourth support member 24 are selectively connected to complete the installation of the support pole 1. In the example of Fig. 1, the first support member 21, the second support member 22, the third support member 23, and the fourth support member 24 are connected in this order from the bottom.

[0056] Next, we will illustrate an example of how to use the support pole 1. Figure 4 is a diagram showing an example of how to use the support pole 1. The support pole 1 can be used, for example, as shown in Figure 4, by locking a master rope 50 to the tool locking portion 22d and the tool locking portion 24a.

[0057] FIG. 5 shows another example of how the support pole 1 can be used. As explained above, the outer diameters of the poles 21a, 22a, and 23a are all the same, conforming to the outer diameter of the single-tube pipes used for scaffolding. Therefore, a commercially available clamp 60 for single-tube pipes can be attached to any of the poles 21a, 22a, and 23a. By attaching the clamp 60 to the support pole 1, a single-tube pipe 70 can be attached to the clamp 60, resulting in a simple fence or handrail configuration as shown in FIG. 5.

[0058] As described above, according to the support pole 1 of this embodiment, the hook portion 11 is used to engage with the annular body 102, allowing the support pole 1 to be easily attached to the annular body 102. Furthermore, the first support pole member 21, the second support pole member 22, the third support pole member 23, and the fourth support pole member 24 can be easily separated and connected, allowing for flexible changes in usage depending on the situation at the site. Furthermore, the contact surfaces 31a, 32a, 34a, and 35a of the base member 30 are connected to surround the entire circumference of the annular body 102 when the hook portion 11 is engaged with the annular body 102. This allows the base member 30 to more reliably contact the upper surface 101 of the installation location, thereby stably supporting the support pole 1. Furthermore, the columnar portions 21a, 22a, and 23a all have the same outer diameter, which conforms to the outer diameter of the single-tube pipes used for scaffolding pipes, so that single-tube pipes can be used to install fences, handrails, etc.

[0059] (Variations) The present disclosure is not limited to the above-described embodiments, and various modifications and variations are possible, and these are also within the scope of the present disclosure.

[0060] (1) In the embodiment, the support section 20 has been described as having four support members: a first support member 21, a second support member 22, a third support member 23, and a fourth support member 24. However, the present invention is not limited to this, and the support section may be configured as a single member that cannot be separated. Furthermore, the support section may be configured with five or more types of support members.

[0061] (2) In the embodiment, the columnar portion 21a, the columnar portion 22a, and the columnar portion 23a all have the same outer diameter, which is in accordance with the outer diameter of the single pipe used for the scaffolding pipe. However, the outer diameter of the columnar portion may be an outer diameter that is unrelated to the outer diameter of the single pipe used for the scaffolding pipe.

[0062] (3) In the embodiment, an example has been described in which the base member 30 is placed directly on the upper surface 101 of the electrical equipment 100. However, this is not limiting, and for example, a resin member, a rubber member, or the like may be placed between the upper surface 101 and the base member 30 as a cushioning material to prevent scratches on the upper surface 101.

[0063] The embodiments and modifications may be used in combination as appropriate, but detailed description thereof will be omitted. The present disclosure is not limited to the above-described embodiments. [Explanation of symbols]

[0064] 1 Support column 10 Engagement member 11 Hook part 12 Male thread 20 Support section 21 First support member 21a Columnar part 21b Flange part 21c female thread 21d Female thread for connection 22 Second support member 22a Column part 22b Male thread for connection 22c Female thread for connection 22d Instrument locking part 23 Third support member 23a Columnar part 23b Male thread for connection 23c Female thread for connection 24 Fourth support member 24a Instrument locking part 24b Male thread for connection 30 Base member 30a opening 30b opening 30c opening 31 First side wall 31a Contact surface 32 Second side wall 32a Contact surface 33 Top part 34 1st lower end reinforcement part 34a Contact surface 35 2nd lower end reinforcement part 35a Contact surface 36 Through hole 50 Main rope 60 Clamp 70 Single pipe 100 Electrical Equipment 101 Top surface 102 Annular

Claims

1. A support post for engaging a worker's safety maintenance tool using a ring-shaped body provided in advance at the installation location, an engaging member having a hook portion that engages with the annular body and a male thread portion that extends from the hook portion; A support portion having a female thread portion on at least one end side into which the male thread portion is screwed; a base member that covers the annular body and the hook portion when the hook portion is engaged with the annular body, and has a through hole at an upper portion thereof that does not receive one end of the support column and through which the male screw portion can pass; A support column comprising:

2. 2. The support strut of claim 1, The support portion is made up of a plurality of support members that can be freely separated and connected, At least a part of the support member has an instrument locking portion capable of locking the safety maintenance instrument; A support pillar characterized by:

3. The support column according to claim 1 or 2, a contact surface of the base member that contacts the installation location is connected to surround the entire circumference of the annular body in a state where the hook portion is engaged with the annular body, the side surface of the base member has openings that are opened on at least two different sides; A support pillar characterized by:

4. The support column according to claim 1 or 2, At least a part of the support portion has a cylindrical outer diameter, and the diameter of the cylindrical shape conforms to the outer diameter of a single pipe used for scaffolding pipes; A support pillar characterized by:

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