Safety protective equipment for tank containers

Abstract

By enabling workers to install safety equipment on top of the tank container without having to climb onto the tank container itself, this improves safety by protecting workers working on top of the tank container from falls, including during the installation of safety equipment. [Solution] A pair of support members 51 and 52 are erected at both ends along the longitudinal direction of the tank container being transported by vehicle. The pair of support members 51 and 52 are equipped with a locking portion at the upper end that engages with a corner fitting located above, and a fixing portion at the lower end that is fixed to a corner fitting located below. A safety rope is pre-stretched between the upper ends of the pair of support members 51 and 52. Therefore, the pair of support members and the safety rope can be installed without workers having to climb onto the top of the tank container.

Description

Technical Field

[0001] The present invention relates to a safety protection device for a tank container.

Background Art

[0002] Conventionally, as a technology related to a safety protection device for a tank container, for example, those disclosed in Patent Document 1 and the like have already been proposed.

[0003] Patent Document 1 includes a tank that is long in the front-rear direction and has an openable and closable manhole on the upper surface that enables the entry and exit of liquids or powders, columns that are erected at the front ends and rear ends of both side surfaces of the tank, and a beam member that connects a pair of columns arranged on each side surface of the tank inside the columns, a scaffold that extends in the front-rear direction of the tank and is arranged above the tank and along at least one of the beam members, and a ladder that is spanned above and below the tank in the vicinity of the scaffold. In the tank container, a plurality of columns that are connected to each other at intervals along the front-rear direction of the tank are connected to the beam member or the scaffold close to the ladder, and the plurality of columns can be raised by rotating in the front-rear direction with the connection part to the beam member or the scaffold as a fulcrum, and a handrail that is erected between the plurality of columns and rises by the above rotation with the connection part to each column as a fulcrum is provided.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to provide a safety protection device for a tank container that can be installed on the upper part of the tank container without an operator ascending to the upper part of the tank container.

Means for Solving the Problems

[0006] The invention described in claim 1 is a safety protective device for a tank container that protects workers working on top of a tank container being transported by a vehicle from the risk of falling, A pair of support members, each attached to both ends of one longitudinal side surface arranged along the longitudinal direction of the tank container, each having a locking portion that engages with a corner fitting located at the upper end of the end along the longitudinal direction of the tank container, and a fixing portion that is fixed in a non-detachable state to a corner fitting located at the lower end of the end along the longitudinal direction of the tank container, A safety rope stretched between the upper ends of the pair of support members, Equipped with, The pair of support members are safety protective devices for tank containers that can be installed without having to climb onto the top of the tank container.

[0007] The invention described in claim 2 is a safety protective device for a tank container according to claim 1, wherein the support member is made of fiber-reinforced plastic using carbon fibers.

[0008] The invention described in claim 3 is a safety protective device for a tank container as described in claim 1, wherein the locking portion of the support member is formed in a substantially L-shape on the side and locks into an elongated engagement hole located on the upper end surface of a corner fitting positioned at the upper end of the tank container.

[0009] The invention described in claim 4 is a safety protective device for a tank container according to claim 1, wherein the fixing portion of the support member comprises a fixing piece inserted into a vertically elongated engagement hole located on the side of a corner fitting positioned at the lower end of the tank container, and an operating lever that fixes the fixing piece to the corner fitting by rotating it.

[0010] The invention described in claim 5 is a safety protective device for a tank container according to claim 1, wherein the safety rope is fixed in a state in which it is inserted through a through hole provided in a fitting fixed to the upper end of at least one of the pair of support members.

[0011] The invention described in claim 6 is a safety protective device for a tank container according to claim 5, wherein the base end of the safety rope is routed through an insertion hole in a fitting fixed to the upper end of one of the support members to the lower end of the one support member. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a safety protective device for tank containers that can be installed on top of a tank container without workers having to climb onto the top of the tank container. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is a perspective view showing a safety protective device according to this first embodiment. [Figure 2] Figure 2 is a side view showing a tank container to which the safety protective equipment according to this embodiment 1 can be applied. [Figure 3] Figure 3 is a side view showing a vehicle transporting a tank container. [Figure 4] Figure 4 is a perspective view showing the corner fittings of a tank container. [Figure 5] Figure 5 is a plan view showing a vehicle used to transport tank containers. [Figure 6] Figure 6 is a perspective view showing the usage state of the safety protective equipment according to this first embodiment. [Figure 7] Figure 7 is a partially broken side view showing the lower end of the safety protective device according to this embodiment 1. [Figure 8] Figures 8(a) and 8(b) are configuration diagrams showing the unlocked and locked states of the safety protective equipment according to this embodiment 1. [Figure 9] Figure 9 is a partially broken side view showing a modified example of the safety protective equipment according to this embodiment 1. [Modes for carrying out the invention]

[0014] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0015] [Embodiment 1] FIG. 1 is a partially broken perspective configuration diagram showing a safety protection device for a tank container according to Embodiment 1 of the present invention.

[0016] As shown in FIG. 2(a), the tank container 1 is configured by fixing and attaching a substantially cylindrical tank body 2 containing contents such as liquid or powder into a rectangular parallelepiped box body 3 in the same manner as a normal container configured as a rectangular parallelepiped box body. Note that the box body 3 into which the tank body 2 is inserted is not necessarily limited to a box-shaped one, and may be configured from a frame body combined in a rectangular parallelepiped shape or the like.

[0017] The International Organization for Standardization (ISO) standardizes containers in order to achieve commonality of transportation infrastructure and ensure the efficiency of transportation operations. Containers of ISO standards have the same outer dimensions (outer shape dimensions) regardless of the manufacturer that produced the container. Containers of ISO standards are available in multiple sizes such as 20 feet and 40 feet. In addition, containers of JIS (Japanese Industrial Standards) standards are available in sizes such as 10 feet and 12 feet in addition to containers such as 20 feet and 40 feet similar to ISO standard containers.

[0018] The tank container 1 has a rectangular parallelepiped box body 3 formed in a size conforming to standards such as ISO, similar to a normal container. For example, if the tank container 1 conforms to the 20-foot standard, the outer dimensions of the box body 3 are set to 6058 mm in length, 2438 mm in width, and 2591 mm in height.

[0019] The tank body 2 is formed in a roughly cylindrical shape from a metal such as stainless steel. The tank body 2 is equipped with a first manhole 4 and a second manhole 5 at the center and front of its upper end surface, which can be opened and closed for the inflow and outflow of liquids, powders, and other contents, or for workers to perform cleaning and inspection work. The first manhole 4 has a larger outer diameter than the second manhole 5. Unlike ordinary containers, the tank container 1 requires workers to climb onto the top of the tank body 2 to open and close the first manhole 4 and the second manhole 5 when inflowing or outflowing liquids, powders, or other contents into the tank body 2, or when performing cleaning or inspection work. In the figure, reference numerals 6 and 7 indicate the first and second covers, respectively, which open and close to cover the first and second manholes 4 and 5.

[0020] The box body 3 of the tank container 1 is constructed as a rectangular box, similar to a normal container. It consists of a rectangular ceiling wall 8 positioned at the top, a rectangular bottom wall 9 positioned at the bottom, rectangular front and rear walls 10 and 11 positioned along the longitudinal direction, and rectangular left and right walls 12 and 13 positioned along the transverse direction intersecting the longitudinal direction, which serve as examples of longitudinal sides. These walls are connected by four support columns 14 to 17 positioned at each corner, four beam members 18 to 21 positioned along the longitudinal direction, and four beam members 22 to 25 positioned along the transverse direction. The ceiling wall 8, bottom wall 9, front and rear walls 10 and 11, and left and right walls 12 and 13 are made of steel plates or the like, but to improve their strength, they are not formed as flat plates, but rather have protrusions at the required positions, as shown in Figure 5.

[0021] The ceiling wall 8 is constructed by fixing a rectangular steel plate to the ceiling portion, which is enclosed by relatively long upper girder members 18, 19 arranged along the longitudinal direction of the tank container 1 and relatively short upper beam members 22, 23 arranged along the short direction intersecting the longitudinal direction of the tank container 1, by means of welding or other means. Similarly, the bottom wall 9 is constructed by fixing a rectangular steel plate to the bottom portion, which is enclosed by relatively long lower girder members 20, 21 arranged along the longitudinal direction of the tank container 1 and relatively short lower beam members 24, 25 arranged along the short direction intersecting the longitudinal direction of the tank container 1, by means of welding or other means.

[0022] Similarly, the front wall 10 is constructed by fixing a rectangular steel plate to the front wall portion, which is surrounded by a relatively short upper beam member 22 positioned along the short side of the tank container 1, two support columns 16 and 17 positioned in front of the tank container 1, and a relatively short lower beam member 24 positioned along the short side of the tank container 1, by means of welding or other means. The rear wall 11 is constructed by fixing a rectangular steel plate to the rear wall portion, which is surrounded by a relatively short upper beam member 23 positioned along the short side of the tank container 1, two support columns 16 and 17 positioned behind the tank container 1, and a relatively short lower beam member 25 positioned along the short side of the tank container 1, by means of welding or other means.

[0023] Furthermore, the left wall 12 is constructed by fixing a rectangular steel plate to the left side of the tank container 1 by welding or other means, which is surrounded by a relatively long upper beam member 18 arranged along the longitudinal direction of the tank container 1, two support columns 14 and 16 located on the right side of the tank container 1, and a relatively long lower beam member 20 arranged along the longitudinal direction of the tank container 1. The right wall 13 is constructed by fixing a rectangular steel plate to the right side of the tank container 1 by welding or other means, which is surrounded by a relatively long upper beam member 19 arranged along the longitudinal direction of the tank container 1, two support columns 15 and 17 located on the right side of the tank container 1, and a relatively long lower beam member 21 arranged along the longitudinal direction of the tank container 1.

[0024] As shown in Figure 2, the box body 3 of the tank container 1 has eight corner fittings 27-34 attached to each corner by means of welding or other means, just like a normal container.

[0025] The corner fittings 27-34 are for inserting and connecting lifting jigs for lifting the tank container 1 and fixing jigs for fixing the tank container 1 in a predetermined position. As shown in Figure 4, the corner fittings 27-34 are formed in a hollow, roughly rectangular parallelepiped shape. The corner fittings 27-34 have engagement holes 35-37 on three of their externally exposed surfaces for inserting and connecting lifting jigs for lifting the tank container 1 and fixing jigs for fixing the tank container 1 in a predetermined position.

[0026] Figure 4 shows corner fitting 30, which is located at the upper right rear end of the box body 3, among the corner fittings 27 to 34 arranged at each corner in Figure 2. The engagement holes 35 that open on the upper or lower end surfaces of the corner fittings 27 to 34 are all horizontally elongated engagement holes that open along the longitudinal direction of the tank container 1. In addition, the engagement holes 36 and 37 that open on the side surfaces of the corner fittings 27 to 34 are all vertically elongated engagement holes that open along the vertical direction.

[0027] The cylindrical tank body 2 is fixedly attached to the rectangular box-shaped body 3 in a substantially inscribed state, as shown in Figure 2(a). As shown in Figure 5, steps 39 and 40 for workers to walk on are provided on both sides along the width direction and in the center along the width direction, and along the longitudinal direction at the front, rear, and middle, respectively.

[0028] As shown in Figure 2(b), a ladder 41 is fixed to one side (the right side in the illustrated example) of the rear end of the box body 3 of the tank container 1, serving as an example of a climbing device for workers to ascend and descend the top of the box body 3.

[0029] Incidentally, the ladder 41 of the tank container 1 consists of two vertical beams 42 and 43 made of metal such as aluminum, with multiple horizontal beams 44 fixed at regular intervals for the feet to be placed on. When a worker climbs up or down the ladder 41, the only places they can grip are the two vertical beams 42 and 43 and the horizontal beams 44. In particular, there is no handrail or anything similar provided at the top of the ladder 41. Therefore, when a worker climbs onto the top of the tank container 1's box body 3 using the ladder 41 to open and close the first and second covers 6 and 7 and the first and second manholes 4 and 5, there is no part like a handle for the worker to grab onto, so there is a risk that the worker will lose their balance and fall from the top of the tank container 1 to the ground.

[0030] In particular, as shown in Figure 3, the tank container 1 is transported while resting on top of a transport vehicle 45 such as a truck or trailer. Furthermore, the operation of inflowing and outflowing the contents from the tank body 2 of the tank container 1 is usually performed while the tank container 1 remains resting on top of the transport vehicle 45. As a result, the top of the tank container 1, including the height of the transport vehicle 45's cargo bed, is at a considerable height, and there was a risk of serious injury if a worker 90 accidentally fell from the top of the tank container 1.

[0031] In recent years, the demand for tank containers has increased dramatically, and with the advocacy of SDGs and other initiatives, safety in various operations is being re-evaluated. As a result, there is a growing need to ensure the safety of workers who operate or handle tank containers.

[0032] Therefore, the safety protective device for a tank container according to this embodiment 1 is provided in order to provide a safety protective device for a tank container that can be installed on top of a tank container without workers having to climb onto the top of the tank container, and is a safety protective device for a container that protects workers working on top of a container being transported by a vehicle from the risk of falling, comprising a pair of support members that are attached to both ends of one longitudinal side surface arranged along the longitudinal direction of the container, each support member having a locking part that engages with a corner fitting located at the upper end of the end along the longitudinal direction of the container and a fixing part that is fixed in a non-detachable state to a corner fitting located at the lower end of the end along the longitudinal direction of the container, and a safety rope stretched between the upper ends of the pair of support members, wherein the pair of support members are configured to be installable without workers having to climb onto the top of the container.

[0033] In other words, the safety protective device 50 for the tank container according to this embodiment 1, as shown in Figures 1 and 2, is broadly configured to include support members 51 and 52 that are attached along the support columns 15 and 17 to both ends along the longitudinal direction of the right wall 13, which is one of the longitudinal sides of the tank container 1, and a safety rope 53 that is stretched between the upper ends of the pair of support members 51 and 52.

[0034] The pair of support members 51 and 52 are similarly constructed. Here, we will explain using one of the support members 51 as an example. As shown in Figure 1, the support member 51 comprises a support member body 54. The support member body 54 is formed in an elongated cylindrical shape from, for example, carbon fiber reinforced plastic (CFRP). When the support member body 54 is made of CFRP, it is lighter and stronger than metals such as stainless steel or aluminum, and is superior in ensuring operability and safety.

[0035] In this embodiment 1, the support member body 54 is divided into an upper support member body 54a and a lower support member body 54b, which are located above and below the vertical direction. The upper support member body 54a and the lower support member body 54b are integrally connected and fixed by a cylindrical connecting member 55. The outer diameters of the upper support member body 54a and the lower support member body 54b are set to be the same. Furthermore, the inner diameter of the connecting member 55 is set to be the same as or slightly larger than that of the upper and lower support member bodies 54a and 54b, allowing them to slide when the upper and lower support member bodies 54a and 54b are inserted. Note that the support member body 54 is not limited to being divided into two parts, but may consist of only one part, or divided into three or more parts.

[0036] The connecting member 55 has insertion holes 56 and 57 at two locations, upper and lower, respectively, into which locking pins 58, similarly configured, can be inserted. In addition, the upper and lower support member bodies 54a and 54b have multiple adjustment holes 59, 59... along their longitudinal direction into which the locking pins 58 can be inserted.

[0037] The upper and lower support member bodies 54a and 54b are locked together, for example, by inserting a locking pin 58 through the lower insertion hole 57 of the connecting member 55 into an adjustment hole 59 opened at the upper end of the lower support member body 54b, and by inserting a locking pin 58 through the upper insertion hole 56 of the connecting member 55 into an adjustment hole 59 opened at the lower end of the upper support member body 54a, thereby allowing the height of the upper support member body 54a to be adjusted.

[0038] In this way, by making the height of the upper support member body 54a adjustable, it is possible to accommodate multiple tank containers 1 of different heights with the same support members 51 and 52.

[0039] In the illustrated embodiment, the upper support member body 54a and the lower support member body 54b are connected by a connecting member 55. However, the invention is not limited to this configuration. By making the outer diameters of the upper support member body 54a and the lower support member body 54b different, the length can be adjusted by inserting one of the support member bodies 54a into the other, without using the connecting member 55.

[0040] However, by configuring the upper support member body 54a and the lower support member body 54b to be connected by a connecting member 55, it is possible to improve the connection strength between the upper and lower support member bodies 54a and 54b.

[0041] As shown in Figures 1 and 5, the upper part of the main support member 54a is provided with a locking portion 60 that engages with a corner fitting 30 located at the upper end of the tank container 1. The locking portion 60, like the main support member 54, is made of synthetic resin such as CFRP or metal such as aluminum (A7075).

[0042] The locking portion 60 is formed in a substantially L-shape from the side, comprising a cylindrical or rectangular support portion 61 fixed and supported by the upper support member body 54a, an arm portion 62 extending horizontally in a cantilevered manner from the support portion 61, and a locking piece 63 provided at the tip of the arm portion 62 so as to protrude downward.

[0043] The support portion 61 of the locking portion 60 is formed in a cylindrical or rectangular shape and is inserted into the upper support member body 54a so as to be movable in the vertical direction. The support portion 61 has a fixing hole 64 on its side, and is fixed and supported by the upper support member body 54a by inserting a fixing pin 65 into the fixing hole 64. The upper support member body 54a has multiple fixing holes 64 at different heights (two in the illustrated example) into which the fixing pin 65 is inserted. The height of the support portion 61 of the locking portion 60 can be adjusted by changing the position of the fixing holes 64 in the upper support member body 54a into which the fixing pin 65 is inserted.

[0044] The locking piece 63 of the locking portion 60 has a width corresponding to the engagement hole 35 of the corner fittings 27-34. The locking piece 63 of the locking portion 60 is fixed to the corner fittings 27-34 by being inserted into the engagement hole 35 of the corner fittings 27-34 from above. The locking piece 63 of the locking portion 60 has a width corresponding to the engagement hole 35 of the corner fittings 27-34, and the widthwise end of the locking piece 63 abuts against the end face of the engagement hole 35 along the longitudinal direction, thereby preventing the locking piece 63 from shifting position. It is desirable that both sides of the locking piece 63 of the locking portion 60 along the widthwise direction be formed into a cross-sectional arc shape that matches the engagement hole 35 of the corner fitting 28, as shown in Figure 4.

[0045] Furthermore, as shown in Figure 1, the lower support member body 54b is provided with a fixing portion 66 at its lower end, which is fixed to a corner fitting 34 located at the lower end of the tank container 1. The locking portion 60 of the upper support member body 54a and the fixing portion 66 of the lower support member body 54b are positioned along the longitudinal direction of the support member body 54 at a distance corresponding to the height of the tank container 1.

[0046] As shown in Figure 7, the fixing part 66, like the locking part 60, is made of synthetic resin such as CFRP or metal such as aluminum (A7075), and comprises a fixing part body 67 formed in the shape of a vertically elongated rectangular parallelepiped. The fixing part body 67 has a semi-cylindrical part (detachable part) 68 located on the upper front side that is separated from the fixing part body 67. A fixing hole 69 is opened on the upper end surface of the fixing part body 67 for fixing the lower end of the lower support member body 54b in an inserted state. The fixing part 66 is attached to the lower end of the lower support member body 54b by inserting the lower end of the lower support member body 54b into the fixing hole 69 of the fixing part body 67 and fastening the semi-cylindrical detachable part 68 to the fixing part body 67 with screws 68a.

[0047] A rotating shaft 70 is provided at the lower part of the fixed body 67 so as to be rotatable along the horizontal direction. An operating lever 71 for rotating the rotating shaft 70 is fixedly attached to the outer end of the rotating shaft 70. In Figure 1, reference numerals 72 and 73 indicate rod-shaped stoppers that restrict the rotational position of the operating lever 71, respectively.

[0048] Furthermore, the end of the rotating shaft 70 located on the inside (tank container 1 side) is provided with a fixing piece 74 that is fixed in a non-detachable state by rotating it while inserted into the engagement hole 36 of the corner fitting 34 located at the lower end of the tank container 1. As shown in Figure 8, the fixing piece 74 is made up of an elongated rectangular flat plate or a rigid body with a substantially trapezoidal side.

[0049] As shown in Figures 8(a) and 8(b), the fixing part 66 is fixed by inserting a fixing piece 74, which is fixed to the tip of the rotating shaft 70, from the front into the engagement hole 36 of the corner fitting 34 located at the lower end of the tank container 1, and rotating the operating lever 71 by 90 degrees, thereby locking the fixing piece 74 inside the engagement hole 36 of the corner fitting 34. The fixing piece 74 is attached to the rotating shaft 70 so as to match the orientation of the operating lever 71. Therefore, when the operating lever 71 is in a vertical position, the fixing piece 74 also faces vertically, as shown in Figure 8(a). When the operating lever 71 is in a horizontal position, the fixing piece 74 also faces horizontally, as shown in Figure 8(b), and is fixed in a non-detachable state by abutting against the side surface of the engagement hole 36 of the corner fitting 34.

[0050] Furthermore, as shown in Figure 1, an attachment member 75 is provided at the upper end of the upper support member body 54a for attaching or fixing the safety rope 53. The attachment member 75, like the support member body 54, is made of synthetic resin such as CFRP or metal such as aluminum (A7075), and is formed in a cylindrical or rectangular shape. An attachment portion 76 for attaching the safety rope 53 is provided on one side of the attachment member 75 in a protruding state. An attachment hole 77 for connecting or fixing the safety rope 53 is opened in the attachment portion 76 of the attachment member 75. The vertical position of the attachment member 75 is restricted so that it can rotate by stopper members 78 and 79 fixed to the upper support member body 54a.

[0051] The safety rope 53 is either directly connected to or fixed to the connecting hole 77 of the mounting portion 76 of the mounting member 75, or a hook 80 (see Figure 3) provided at the end of the safety rope 53 is locked and fixed. Alternatively, as shown in Figure 3, an annular member may be inserted in advance through the connecting hole 77 of the mounting portion 76, so that the safety rope 53 or the hook 80 provided at the end of the safety rope 53 is inserted into the annular member 81 and fixed.

[0052] A pair of support members 51 and 52, each attached along the longitudinal direction of the tank container 1, have a safety rope 53 pre-inserted through the connecting hole 77 of the mounting portion 76, or hooks 80 and 82 provided at both ends of the safety rope 53 are attached and secured to them.

[0053] The safety rope 53 is formed to be longer than the distance between the pair of support members 51 and 52, and a hook 82 equipped with an automatic winding function for the safety rope 53 is attached to one end of the safety rope 53. As shown in Figure 3, the hook 82 equipped with the automatic winding function attached to one end of the safety rope 53 is connected to and fixed to a locking part 83 provided on the transport vehicle 45.

[0054] In the above configuration, the safety protective equipment for containers according to this embodiment 1 makes it possible for workers to install a safety rope on top of the tank container without having to climb onto the top of the tank container, as follows.

[0055] In other words, the safety protective equipment 50 for the tank container according to this embodiment 1 is normally stored in a predetermined storage position, such as on the cargo bed 45a of a transport vehicle 45, such as a trailer, that transports the tank container 1, as shown in Figure 3. When the transport vehicle 45 that transports the tank container 1 arrives at the predetermined location and a worker climbs onto the top of the tank body 2 of the tank container 1, the safety protective equipment 50 for the tank container stored in the predetermined storage position is taken out by the worker and used.

[0056] Unlike ordinary containers, the tank container 1 requires operations such as opening and closing the first and second manholes 4 and 5 located at the top of the tank body 2 when loading contents into the tank body 2 or when retrieving contents from the tank body 2 at the destination. Therefore, as shown in Figure 3, the worker 90 needs to climb onto the top of the tank container 1 while it is loaded onto the cargo bed 45a of a transport vehicle 45 such as a trailer, and perform operations such as opening and closing the first and second manholes 4 and 5.

[0057] At that time, the safety protective equipment 50 for the tank container, which was removed by the worker 90, is attached to the box 3 that houses the tank body 2 of the tank container 1, as shown in Figure 3. Of the pair of support members 51 and 52 of the removed safety protective equipment 50 for the tank container, for example, one support member 51 is attached to the rear corner along the longitudinal direction of the right wall 13, which is one side of the tank container 1.

[0058] One of the support members 51 has a hook 80 (see Figure 3) attached to the end of a safety rope 53, which is pre-attached to a mounting member 75 provided at the upper end of the upper support member body 54a. As shown in Figure 6, the worker 90, while remaining on the ground, supports one of the support members 51 of the safety protective equipment 50 for the removed tank container with both hands and engages the locking piece 63 of the locking portion 60 of the upper support member body 54a with the engagement hole 35 of the corner fitting 30 provided at the upper rear end of the tank container 1. At this time, the worker 90 tilts the lower support member body 54b away from the tank container 1, which allows the locking piece 63 of the locking portion 60 to be easily and reliably inserted into the engagement hole 36 of the corner fitting 30 from above.

[0059] Subsequently, as shown in Figure 6, worker 90 moves the lower support member body 54b of the safety protective device 50 for the tank container parallel to the right wall 13, so that the fixing part 66 provided at the lower end of the lower support member body 54b faces the engagement hole 36 of the corner fitting 34 provided at the lower rear end of the tank container 1.

[0060] In this state, as shown in Figure 8(a), worker 90 inserts the fixing piece 74 provided on the fixing part 66 of the lower support member body 54b into the engagement hole 36 of the corner fitting 34. Then, with the fixing piece 74 of the fixing part 66 inserted into the engagement hole 36 of the corner fitting 34, as shown in Figure 8(b), the fixing piece 74 is secured by locking it into the engagement hole 36 of the corner fitting 34 by rotating the operating lever 71 of the fixing part 66 by 90 degrees.

[0061] This completes the process of fixing one of the support members 51 to the tank container 1.

[0062] At this time, the safety rope 53, whose tip is fixed to one of the support members 51, is inserted through an annular member 81 which is inserted through a connecting hole 77 of the mounting portion 76 of the mounting member 75 provided at the tip of the other support member 52, as shown in Figure 3.

[0063] Next, the worker attaches the other support member 52 to the front corner along the longitudinal direction of the right wall, which is one side of the tank container 1.

[0064] The other support member 52 has a safety rope 53 inserted through a mounting member 75 provided at the upper end of the upper support member body 54a. The base end of the safety rope 53 is fixed to the transport vehicle 45.

[0065] While remaining on the ground, worker 90 supports the other support member 52 of the safety protective equipment 50 for the removed tank container with both hands, similar to the other support member 51, and locks the locking portion 60 of the upper support member body 54a into the engagement hole 36 of the corner fitting 28 provided at the upper front end of the tank container 1. At this time, as shown in Figure 6, worker 90 tilts the lower support member body 54b in a direction away from the tank container 1, making it possible to easily insert the locking piece 63 of the locking portion 60 into the engagement hole 36 of the corner fitting 28 from above.

[0066] Subsequently, the worker 90 moves the lower support member body 54b of the safety protective equipment 50 for the tank container parallel to the right wall 13, so that the fixing part 66 provided at the lower end of the lower support member body 54b faces the engagement hole 36 of the corner fitting 32 provided at the lower rear end of the tank container 1.

[0067] In this state, worker 90 inserts the fixing piece 74 provided on the fixing part 66 of the lower support member body 54b into the engagement hole 36 of the corner fitting 32. Then, with the fixing piece 74 of the fixing part 66 inserted into the engagement hole 36 of the corner fitting 32, as shown in Figure 8(b), the fixing piece 74 is locked into the engagement hole 36 of the corner fitting 32 by rotating the operating lever 71 of the fixing part 66 by 90 degrees.

[0068] This completes the process of fixing the other support member 52 to the tank container 1.

[0069] Subsequently, as shown in Figure 3, worker 90 climbs onto the loading platform 45a of the transport vehicle 45, and then climbs to the upper end of the tank container 1 via a ladder 41 provided on the tank container 1. When worker 90 is on the upper end of the tank container 1, a pair of support members 51 and 52 are attached to the tank container 1 in an upright position, and a safety rope 53 is stretched between the pair of support members 51 and 52.

[0070] Therefore, when the worker 90 climbs onto the ceiling wall 8 of the tank container 1 loaded on the cargo bed 45a of the transport vehicle 45, he can of course grab onto the support member 51. Furthermore, as shown in Figure 5, when he walks on the footboards 39 and 40 provided on the upper surface of the tank container 1 to move to the first and second manholes 4 and 5 to open and close them, he can grab onto the safety rope 53, thereby preventing him from losing his balance and falling from the tank container 1.

[0071] When removing the safety protective device 50 for the tank container from the tank container 1, as shown in Figure 8, the operating lever 71 of the fixing part 66 is rotated 90 degrees counterclockwise to release the connection between the fixing piece 74 and the corner fitting 34 of the tank container 1. By pulling the fixing part 66 forward and lifting the support members 51 and 52 upward, the locking mechanism between the locking part 60 and the corner fittings 32 and 34 of the tank container 1 is released, and the device can be easily removed from the tank container 1.

[0072] Figure 9 shows a modified example of the safety protective device 50 according to this embodiment 1. In this modified example of the safety protective device 50, the rotation axis 70 of the fixing part 66 is biased in a direction that protrudes by a coil spring S, and when the fixing piece 74 is engaged with the engagement hole 36 of the corner fitting 32, the fixing piece 74 is configured to press against the inner surface of the engagement hole 36.

[0073] In the first embodiment described above, the case in which the support members 51 and 52 are placed on the right wall 13, which is one side of the tank container 1, and the safety rope 53 is stretched between them was explained. However, the invention is not limited to this, and the support members 51 and 52 may also be placed on the left wall 12, which is the other side of the tank container 1, or the support members 51 and 52 may be placed diagonally across the tank container 1, or the support members 51 and 52 may be placed on all four sides of the tank container 1 to stretch the safety rope 53 between them. [Explanation of Symbols]

[0074] 1... Tank container 2... Tank body 3…Box body 4…The first manhole 41...Ladder 50…Safety equipment for tank containers 51, 52… Support members 53… Safety rope

Claims

1. In safety protective equipment for tank containers that protects workers working on top of tank containers transported by vehicles from the risk of falling, A pair of support members, each attached to both ends of one longitudinal side surface arranged along the longitudinal direction of the tank container, each having a locking portion that engages with a corner fitting located at the upper end of the end along the longitudinal direction of the tank container, and a fixing portion that is fixed in a non-detachable state to a corner fitting located at the lower end of the end along the longitudinal direction of the tank container, A safety rope stretched between the upper ends of the pair of support members, Equipped with, The pair of support members are safety protective equipment for a tank container that can be installed without having to climb onto the top of the tank container.

2. The safety protective device for a tank container according to claim 1, wherein the support member is made of fiber-reinforced plastic using carbon fibers.

3. The safety protective device for a tank container according to claim 1, wherein the locking portion of the support member is formed in a substantially L-shape on the side and locks into a horizontally elongated engagement hole located on the upper end surface of a corner fitting positioned at the upper end of the tank container.

4. The safety protective device for a tank container according to claim 1, wherein the fixing portion of the support member comprises a fixing piece inserted into a vertically elongated engagement hole located on the side of a corner fitting positioned at the lower end of the tank container, and an operating lever that fixes the fixing piece to the corner fitting by rotating it.

5. The safety rope is fixed in a state in which it is inserted through a through-hole provided in a fitting fixed to the upper end of at least one of the pair of support members, as described in claim 1.

6. The safety protective device for a tank container according to claim 5, wherein the base end of the safety rope is routed through an insertion hole in a fitting fixed to the upper end of one of the support members to the lower end of the one support member.

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