Main rope support post and main rope support post installation structure
The lifeline support post with an overhanging design addresses the issue of space reduction in conventional fall prevention devices by allowing insertion into a transport vehicle's hole, securing additional space and enhancing usability.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- YOKOKAWA KYORYO SEISAKUSHO KK
- Filing Date
- 2024-11-26
- Publication Date
- 2026-06-05
AI Technical Summary
Conventional fall prevention devices for loading platforms on trailers have a drawback of narrowing the usable space due to straight tubular support columns, necessitating an improvement to secure a wider usable area.
A lifeline support post with a support post body and joint, featuring an overhanging portion that extends laterally when connected, allowing insertion into a transport vehicle's insertion hole, thus securing additional space by minimizing obstruction.
The lifeline support post design ensures a larger usable space on the cargo bed by eliminating additional obstructions, providing a more efficient fall prevention system without reducing available space.
Smart Images
Figure 2026092214000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a main cable support and an installation structure of the main cable support.
Background Art
[0002] Conventionally, as a device for preventing a fall during work on the loading platform of a trailer, there are a station with a front support member having a front support member erected on the front receiving frame of the loading platform, a station with a rear support member to which a rear support member erected on the rear receiving frame of the loading platform is connected, a front support column detachably erected on the front support member, a rear support column detachably erected on the rear support member, and a wire stretched as a main cable between the front support column and the rear support column. A fall prevention device during loading platform work is known (Patent Document 1).
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] Since the front support column and the rear support column of the fall prevention device during loading platform work are straight tubular, when mounted on the front support member and the rear support member, there is a drawback that the usable space on the loading platform becomes narrow, and there is room for improvement in this regard.
[0005] The present invention has been made in view of such circumstances, and the problem to be solved is to provide a main cable support that can secure as wide a usable space on the loading platform as possible and an installation structure of the main cable support.
Means for Solving the Problems
[0006] [Main Cable Support] The lifeline support post disclosed in this application comprises a support post body and a support post joint, the support post body comprising a connecting portion connected to the support post joint and an overhanging portion that extends laterally when the connecting portion is connected to the support post joint, and the support post joint comprising an insertion portion that is inserted into an insertion hole provided in the loading platform of a transport vehicle and a support post mounting portion that is connected to the support post body.
[0007] [Main rope support installation structure] The lifeline support post installation structure disclosed in this application is a structure in which the insertion part of the support joint of the lifeline support post of this application is inserted into the insertion hole provided in the cargo bed of the transport vehicle, and the connecting part of the support body of the lifeline support post is connected to the support mounting part of the support joint. [Effects of the Invention]
[0008] The lifeline support post of this invention is equipped with an insertion part that can be inserted into the insertion hole of a transport vehicle, and since there are no other components that occupy area besides the lifeline support post, it is possible to secure a larger usable space on the cargo bed compared to conventional fall prevention devices for cargo bed work. A lifeline support post installation structure using the lifeline support post of this invention also produces the same effect. [Brief explanation of the drawing]
[0009] [Figure 1] An explanatory diagram showing an example of how the main rope support post is used. [Figure 2] A perspective view showing an example of a main rope support post. [Figure 3] (a) is an explanatory diagram illustrating an example of the use of a lifeline support post, and (b) is an explanatory diagram illustrating another example of the use of a lifeline support post. [Figure 4] An explanatory diagram illustrating yet another use of the main rope support post. [Figure 5] Diagram illustrating the main support post and support post joint in the state after the main rope support post has been erected. [Figure 6] A perspective view showing another example of a main rope support post. [Modes for carrying out the invention]
[0010] (Embodiment 1) An example of an embodiment of the present invention will be described with reference to the drawings. As shown in Figure 1, the main rope support post 100 of the present invention is used by inserting it into an insertion hole X2 provided in the cargo bed X1 of a transport vehicle X, such as a trailer. As an example, the main rope support post 100 shown in Figure 2 comprises a support post body 10 and a support post joint 20.
[0011] The support column body 10 is a columnar member for erecting the main rope Y, and can be made of a square steel pipe or the like. The support column body 10 in this embodiment includes a connecting part 11 that is placed over and connected to the support column mounting part 22 (described later) of the support column joint 20, a protruding part 12 that extends diagonally upward from the upper side of the connecting part 11, and a column part 13 that is erected upward from the upper side of the protruding part 12.
[0012] In this embodiment, the connecting portion 11, the protruding portion 12, and the column portion 13 are made of straight rectangular steel pipes, and these are welded together to form a single support column body 10. Reinforcement is provided at the connection points of each member by reinforcing plates 14.
[0013] The main support column 10 has an overhanging portion that extends laterally, formed by a protruding portion 12 and a column portion 13. By providing such an overhanging portion, when the overhanging portion is installed in a direction that protrudes outward from the widthwise end face of the cargo bed X1 (outward), the space above the cargo bed X1 is widened by the amount that the overhanging portion moves outward, thereby securing a larger usable space.
[0014] As shown in Figures 3(a) and 3(b), the support column body 10 of this embodiment can be used in an orientation where the overhang portion protrudes outward from the widthwise end face of the cargo bed X1 (outward orientation) or in an orientation where the overhang portion fits inward from the widthwise end face of the cargo bed X1 (inward orientation).
[0015] Furthermore, as another use, the protruding portion can be oriented not only outward or inward, but also, as shown in Figure 4, so that it is parallel or nearly parallel to the widthwise end face of the loading platform X1, or in other words, parallel to the lengthwise direction of the transport vehicle X (sideways).
[0016] On the back surface of the column body 10 (the surface on the outer side of the protruding direction of the protruding portion (the surface facing the outside when the column body 10 is set facing outward and the surface facing the inside when the column body 10 is set facing inward)) 10c, a load support portion for supporting the load Z on the loading platform X1 is provided.
[0017] On both side faces 10b, 10d of the column body 10 (in this embodiment, both side faces of the column portion 13), a main rope locking portion 15 for locking the main rope Y is provided. The main rope locking portion 15 can be composed of an eye nut, an eye bolt, etc. There are no particular restrictions on the shape, structure, installation number, installation position, etc. of the main rope locking portion 15 as long as it can lock the main rope Y.
[0018] On the front portion 10a of the column body 10, a handle 16 that an operator holds during installation, removal, carrying, etc. is provided. In this embodiment, the handle 16 is provided at a position near the protruding portion 12 of the front portion 10a of the column portion 13 so that it can be reached without getting on the transport vehicle X. The mounting position of the handle 16 may be otherwise.
[0019] The column joint 20 is a member used to erect the column body 10 on the loading platform X1. As shown in FIG. 2, the column joint 20 of this embodiment includes an insertion portion 21 inserted into an insertion hole X2 provided in the loading platform X1 of the transport vehicle X, and a column mounting portion 22 that covers and mounts the column body 10.
[0020] The insertion portion 21 can also be composed of a square steel pipe or the like. The dimensions and shape of the insertion portion 21 can be appropriately set according to the dimensions and shape of the insertion hole X2. In this embodiment, the outer dimension of the insertion portion 21 is made smaller than the inner dimension of the insertion hole X2 so that a clearance is ensured between the outer peripheral surface of the insertion portion 21 and the inner peripheral surface of the insertion hole X2.
[0021] Note that the dimensions of the insertion hole X2 may vary depending on the vehicle model, etc., and if the clearance is too wide, there is a risk of rattling or coming loose. In such cases, a gap adjustment member can be attached to the outer circumference of the insertion part 21 to adjust the clearance.
[0022] The gap adjustment member can be made of various materials (for example, stacking thin metal sheets or using elastic materials such as rubber or silicone). The gap adjustment member can be configured to be detachable from the insertion hole X2. There are no particular restrictions on the shape of the gap adjustment member, but for example, it can be cylindrical and fit over the outer circumference of the insertion part 21.
[0023] Furthermore, if there is any looseness in the gap between the cylindrical member and the other component, one or more thin metal plates may be inserted into the gap to eliminate the looseness. In some cases, a wedge-shaped component may also be inserted.
[0024] A rectangular ring-shaped flange 23 is provided at the upper end of the insertion portion 21, protruding outward from the insertion portion 21. The flange 23 is fixed to the insertion portion 21 and the support column mounting portion 22 (described later) by welding or the like.
[0025] The back side of the flange 23 is the surface (contact surface) that comes into contact with the upper surface of the loading platform X1 when the insertion portion 21 is inserted into the insertion hole X2. This contact with the loading platform X1 helps to suppress rattling of the support joint 20 and reduce wobbling of the support body 10.
[0026] A support column mounting section 22 is provided on the upper side of the flange 23, over which the support column body 10 is placed. The support column mounting section 22 can be made of a square steel pipe or the like. The dimensions and shape of the support column mounting section 22 can be appropriately set according to the dimensions and shape of the connecting section 11 of the support column body 10. Note that the dimensions (length x width) of the support column mounting section 22 are smaller than the dimensions (length x width) of the insertion section 21.
[0027] As shown in Figure 5, in this embodiment, when the insertion portion 21 of the support joint 20 is inserted into the insertion hole X2 and the connecting portion 11 is placed over the support mounting portion 22 of the support joint 20 to connect them, the central axis of the insertion hole X2, the central axis of the insertion portion 21, the central axis of the support mounting portion 22, and the central axis of the connecting portion 11 are made coaxial (overlapping in a straight line).
[0028] This design offers the advantage of providing more space on the cargo bed X1 compared to conventional cargo bed fall prevention devices (Patent Document 1) in which the stanchion inserted into the receiving frame (insertion hole X2) of the cargo bed and the support column support member are arranged side by side. A bolt 24 and a nut 25 (Figure 5) can be used to connect the support column mounting section 22 and the connecting section 11.
[0029] (Embodiment 2) Another embodiment of the lifeline support post 100 of the present invention will be described with reference to the drawings. Similar to the lifeline support post 100 of Embodiment 1, the lifeline support post 100 of this embodiment also comprises a support post body 10 and a support post joint 20. In the following description, the differences from Embodiment 1 will be the main focus, and parts common to both Embodiment 1 and Embodiment 1 will be denoted by the same reference numerals and their descriptions will be omitted.
[0030] As shown in Figure 6, the support column body 10 of this embodiment is equipped with a connecting portion 11 and a protruding portion 12 similar to those of Embodiment 1. The upper end of the protruding portion 12 is cut horizontally or substantially horizontally, and a thin plate-shaped support plate 17 is provided. The support plate 17 is fixed to the protruding portion 12 by welding.
[0031] The upper surface of the support plate 17 is provided with a column portion 13 that is thinner than the column portion 13 of Embodiment 1. The column portion 13 is provided with a handle 16 and a lifeline locking portion 15, similar to those in Embodiment 1. Reinforcement plates 18 are provided on the front side of the front surface 10a and the back side of the rear surface 10c of the support column body 10, connecting the column portion 13 and the support plate 17.
[0032] As in this embodiment, by designing the column section 13 to be slender, the weight of the main rope support column 100 is reduced, thereby reducing the burden on workers during installation and removal. In addition, by making the column section 13 slender, a larger usable space can be secured above the cargo bed X1.
[0033] The configurations of the embodiments described above are all examples, and the main rope support post 100 of the present invention is not limited to the configurations of the embodiments described above. The main rope support post 100 of the present invention can be modified as appropriate, such as by adding, replacing, or omitting components, to the extent that the intended purpose can be achieved.
[0034] For example, in the above embodiment, when changing the orientation of the main rope support post 100, one example is to remove the main rope support post 100 from the insertion hole X2, change its orientation, and then reinsert it. However, the main rope support post 100 can also be provided with a rotation mechanism or orientation changing mechanism for changing the orientation of the support post body 10.
[0035] Furthermore, while the above embodiment shows the case where the support column body 10 and the support column joint 20 are made of steel as an example, the support column body 10 and the support column joint 20 can also be made of materials other than steel, such as aluminum or FRP (fiber-reinforced plastic).
[0036] Furthermore, in the above embodiment, one example is a case where the connecting portion 11 of the support column body 10 is placed over the support column mounting portion 22 of the support column joint 20 for connection. However, it is also possible to configure the support column body 10 so that the connecting portion 11 of the support column body 10 can be inserted inside the support column mounting portion 22 of the support column joint 20 for connection.
[0037] (Example of use) Next, we will describe examples of how to use the lifeline support post 100 of the present invention. Here, we will use the lifeline support post of Embodiment 1 as an example, but the lifeline support posts 100 of other embodiments can be used in the same way. In the following, we will explain separately the case in which the lifeline support post 100 is used for installing a lifeline Y and the case in which the lifeline support post 100 is used for supporting a load Z.
[0038] -When using a lifeline support post to install the lifeline- (1) Insert the insertion part 21 of the support joint 20 into the insertion hole X2 of the cargo bed. (2) Place the connecting part 11 of the support body 10 over the support mounting part 22 of the inserted support joint 20. Place the protruding part 12 outwards so that the main rope support 100 faces outwards. Erect multiple main rope support 100s in the same manner. (3) The main rope Y is attached to the main rope attachment points 15 of the multiple main rope support posts 100 that have been erected. (4) After the main rope Y is installed on the main rope support post 100, each worker can ensure their safety by connecting the life rope S, which is attached to the harness or other equipment they wear, to the main rope Y.
[0039] -When using lifeline posts to support the load- (1) Load the cargo Z, which is to be transported, onto the truck bed. (2) Insert the insertion part 21 of the support joint 20 into the insertion hole X2 of the cargo bed. (3) Place the connecting part 11 of the support body 10 over the support mounting part 22 of the inserted support joint 20. Place the protruding part 12 inward so that the main rope support 100 is facing inward or sideways. Erect multiple main rope support 100s in the same manner and support the load Z with the load support part of the main rope support 100.
[0040] When used for the latter purpose, the load support portion may not come into contact with the load Z depending on the size of the load Z, but in this case, the main rope support 100 can be used to wrap around ropes or the like that which will hold the load Z.
[0041] As described above, each lifeline support post 100 has a structure in which the insertion part 21 is inserted into the insertion hole X2 and the connecting part 11 is connected to the support post mounting part 22. In this state, the central axis of the insertion hole X2, the central axis of the insertion part 21, the central axis of the support post mounting part 22, and the central axis of the connecting part 11 are aligned on the same axis. This includes cases where they are offset by a few millimeters.
[0042] When the main rope support post 100 is used to install the main rope Y, the support post body 10 is erected in such a way that the overhang portion protrudes outward from the widthwise end face of the cargo bed X1. When the main rope support post 100 is used to support the cargo Z, the support post body 10 is erected in such a way that the overhang portion is contained inward from the widthwise end face of the cargo bed X1.
[0043] The embodiments and uses disclosed herein are examples only and should not be used as a basis for restricting the technical scope of the present invention. The technical scope of the present invention is defined based on the claims. The technical scope of the present invention also includes equivalents to the claims. [Industrial applicability]
[0044] The lifeline support post 100 disclosed herein can be used particularly suitably when installing a lifeline Y on the cargo bed X1 of a transport vehicle X equipped with an insertion hole X2, such as a trailer. [Explanation of Symbols]
[0045] 10. Main support column 10a Front part 10b Side part 10c back 10d Side part 11 Connecting part 12. Protruding part 13 Pillar section 14 Reinforcement plate 15 Main rope attachment point 16 Handles 17 Support plate 18 Reinforcement Plate 20 Support joint 21 Insertion part 22 Support column mounting section 23 Flange 24 volts 25 nuts 100 Main rope support S Life Rope X Transport Vehicle X1 cargo bed X2 insertion holes Y parent rope Z Load
Claims
1. At the main rope support post, It consists of a support column body and a support column joint, The support column body comprises a connecting portion connected to the support column joint, and an overhanging portion that extends laterally while the connecting portion is connected to the support column joint. The aforementioned support joint comprises an insertion portion that is inserted into an insertion hole provided in the loading platform of the transport vehicle, and a support mounting portion that is connected to the support body. A main rope support post characterized by the following features.
2. In the main rope support post according to claim 1, A cargo support section is provided on the overhang to support the cargo on the loading platform. A main rope support post characterized by the following features.
3. In the main rope support post according to claim 2, The load support section is provided on the outer surface of the overhanging section in the direction of overhang. A main rope support post characterized by the following features.
4. In the installation structure of the main rope support post, The main rope support post is the main rope support post described in any one of claims 1 to 3. The insertion part of the support joint of the main rope support post is inserted into the insertion hole provided in the cargo bed of the transport vehicle. The connecting portion of the main support post of the main rope support post is connected to the support post mounting portion of the support post joint. A main rope support post installation structure characterized by the following features.
5. In the main rope support post installation structure according to claim 4, With the insertion part inserted into the insertion hole and the connecting part connected to the support mounting part, the central axis of the insertion hole, the central axis of the insertion part, the central axis of the support mounting part, and the central axis of the connecting part align on the same axis. A main rope support post installation structure characterized by the following features.
6. In the main rope support post installation structure according to claim 4, The support column is erected in a manner in which the overhang portion protrudes outward from the widthwise end face of the loading platform, in a manner in which the overhang portion is contained within the widthwise end face of the loading platform, or in a manner in which the overhang portion is parallel or approximately parallel to the widthwise end face of the loading platform. A main rope support post installation structure characterized by the following features.