Truck berths and work methods

Abstract

To realize more safe work at low cost by effectively preventing falling from a tail gate lifter of a truck or a platform during loading / unloading work of a load.SOLUTION: A truck berth, having a platform for loading / unloading work of a load to / from a rear deck of a truck, includes one pair of pillars provided respectively vertically extending from an upper surface of the platform along a side surface of the platform from both outer ends of protrusions for respectively seating both left and right ends of a tail gate lifter of a truck, so as to carry out, upon an arrival of a truck, a pillar-sided coupling means attaching step of attaching a first suspension part of coupling means having first and second suspension parts respectively at both ends to suspension holes in the one pair of pillars, and a truck-sided coupling means attaching step of attaching the second suspension part of the coupling means to suspension holes in rails provided extending horizontally on both side surfaces internal of the rear deck of the truck.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a structure of a truck bay having a parking space for a truck and a platform which is a loading and unloading area for goods, and a working method in the truck bay.

Background Art

[0002] Generally, when loading and unloading goods in a truck bay, as shown in FIG. 22, the truck 20 is parked with the cargo bed opening facing the platform 10 side, and the goods are loaded and unloaded via the tailgate lifter 21 of the truck.

[0003] At this time, many accidents occur in which workers or goods fall from the tailgate lifter during the loading and unloading operation. To address this problem, for example, the Ministry of Health, Labour and Welfare recommends installing a safety fence for fall prevention on the tailgate lifter (hereinafter also referred to as the "safety fence method"). (See Non-Patent Document 1.)

[0004] Further, in Patent Document 1, a T-shaped structure having a space for accommodating the tailgate lifter on the platform side has been proposed.

[0005] However, in the technology of Non-Patent Document 1, a gap without a safety fence occurs between the tailgate lifter and the platform, so there is a risk of stepping off or falling from the gap when moving from the tailgate lifter to the platform. In addition, the same risks as before exist for trucks not equipped with a safety fence on the tailgate lifter. On the other hand, although the technology of Patent Document 1 can expect safer work compared to the method of providing a safety fence for the tailgate lifter described in Non-Patent Document 1 because the tailgate lifter is housed under the platform and the truck cargo bed opening is brought close to the platform for loading and unloading goods, it is costly because a T-shaped structure needs to be constructed.

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] Japanese Patent Publication No. 2020-138833 [Non-patent literature]

[0007] [Non-Patent Document 1] Ministry of Health, Labour and Welfare, "For the Safe Use of Tailgate Lifters," p. 4, [online], [Accessed May 9, 2022], Internet. <URL:https: / / www.mhlw.go.jp / file / 06-Seisakujouhou-11300000-Roudoukijunkyokuanzeneiseibu / 0000212477.pdf> [Overview of the project] [Problems that the invention aims to solve]

[0008] This invention addresses the aforementioned conventional circumstances and aims to provide a truck berth and work method that can effectively prevent trucks from falling from tailgate lifters or platforms during loading and unloading operations in warehouses, thereby enabling safer operations at a lower cost. [Means for solving the problem]

[0009] To achieve the above objective, the truck berth according to the present invention is a truck berth having a platform for loading and unloading cargo from the truck bed, The platform comprises a pair of support columns attached along the sides of the platform, Each of the pair of support columns has a hooking hole for connecting to rails that extend horizontally on both sides inside the truck bed and a hooking hole for connecting to rails, and each extends vertically from the top surface of the platform at a distance approximately the same as the width of the truck bed at the truck's landing position.

[0010] In this invention, support columns are provided on the platform side to directly connect the rails on both sides of the truck bed to the platform side using a connecting means (e.g., a belt). This makes it possible to provide a truck berth that allows for safe loading and unloading of cargo even for trucks that do not have safety fences on their tailgate lifters. In particular, with the safety fences of tailgate lifters, when moving cargo to the platform, the guard provided by the safety fence disappears at the moment the cargo moves from the tailgate lifter to the platform, which can lead to accidents where the truck rolls around and falls off. To avoid this, it is necessary to park the truck so that the tailgate lifter is sufficiently close to the platform. Furthermore, even if the truck is parked as close as possible, it is difficult to prevent accidents where the truck rolls around and falls off. However, in this invention, a connecting means (belt) is stretched between the platform-side support columns and the truck bed, so the precision of the parking position when parking the truck is not required as much as with the safety fence system, and the occurrence of accidents where the truck rolls around and falls off can be reduced.

[0011] Furthermore, in the present invention, the side surface of the platform is provided with projections for seating the left and right ends of the truck's tailgate lifter, respectively, such that the upper surface is substantially flush with the upper surface of the platform. The pair of support columns are characterized in that they are each attached to the corners formed by the outer sides of the projection and the side of the platform.

[0012] This protrusion allows the truck's tailgate lifter to be set stably during loading and unloading operations, and also keeps the height difference between the tailgate lifter and the platform small at all times. Furthermore, by attaching a pair of support columns so that they contact not only the side of the platform but also both outer sides of the protrusion, the columns can be securely fixed in place.

[0013] Furthermore, the protrusions may be provided separately for the right and left sides of the truck bed. Additionally, by installing a dock leveler between these left and right protrusions, gaps and steps between the tailgate lifter and the platform can be eliminated, creating a safer working environment.

[0014] More preferably, a second connecting means (e.g., a steel chain) should be installed between adjacent support columns in areas where work is not performed (non-loading areas). This effectively prevents vehicles from falling off the platform at all times, enabling safer loading and unloading operations.

[0015] Furthermore, the work method according to the present invention is a work method for loading and unloading cargo from trucks at the truck berth described above, The method is characterized by performing the following steps when the truck is parked: a support column side connecting means installation step in which the first fastening portion of the connecting means, which has a first fastening portion and a second fastening portion at each end, is attached to the fastening holes of the pair of support columns, respectively; and a truck side connecting means installation step in which the second fastening portion of the connecting means is attached to the fastening holes of rails that extend horizontally on both sides of the inside of the truck's cargo bed, respectively.

[0016] Preferably, the support columns attached to the platform are connected to each other by a second connecting means. In particular, on a platform with multiple loading / unloading areas, the second connecting means is removed only from the loading / unloading area where work is performed, while adjacent support columns are connected by the second connecting means in areas that are not loading / unloading areas and loading / unloading areas where no work is performed. This prevents falls from the platform during a series of loading and unloading operations, enabling safer work. [Effects of the Invention]

[0017] According to the present invention, by connecting the cargo bed of a truck and the support columns attached to the platform with a connecting means, it is possible to prevent a fall from the tailgate lifter therebetween. Further, by connecting the support columns attached to the platform with a chain, it is possible to prevent a fall from the platform.

Brief Description of the Drawings

[0018] [Figure 1] It is a configuration diagram of a truck barth according to the first embodiment of the present invention. [Figure 2] [[ID=,11]]It is a configuration diagram of a belt (first connecting means) according to an embodiment of the present invention. The dashed line in the figure is an omitted line. [Figure 3] It is a configuration diagram of a steel chain (second connecting means) according to an embodiment of the present invention. The dashed line in the figure is an omitted line. [Figure 4] It is an explanatory diagram showing the state when the truck is started in the working method of the truck barth according to an embodiment of the present invention. [Figure 5] It is a diagram showing a state in which a belt or a steel chain is attached to the support column of FIG. 1. [Figure 6] It is a diagram showing a state in which the belt 30 and the steel chain 40a in FIG. 5 are connected. [Figure 7] It is an explanatory diagram showing the state when a belt (first connecting means) and a steel chain (second connecting means) are attached. [Figure 8] It is a configuration diagram of a truck barth according to another embodiment of the present invention. [Figure 9] It is an explanatory diagram showing how the connecting means is attached to FIG. 8. [Figure 10] It is an explanatory diagram of the structure of the support column of FIG. 1. [Figure 11] It is a configuration diagram of a truck barth according to another embodiment of FIG. 1. [Figure 12] It is a plan view, a front view, and left and right side views of the truck barth of FIG. 1. [Figure 13] It is an explanatory diagram of the bumper rubber (protrusion) of the truck barth according to another embodiment of FIG. 1. [Figure 14] Figure 13 is an explanatory diagram showing how to attach the support column to the platform which has a stopper rubber. [Figure 15] This is an outline diagram of the anchor bolt used in the installation method shown in Figure 14. [Figure 16] This figure shows the support column in Figure 14 with belts and steel chains attached. [Figure 17] This diagram illustrates the differences in how the support columns are attached due to differences in the structure of the platform according to embodiments of the present invention. [Figure 18] This is an explanatory diagram of a method for erecting a support column according to a second embodiment of the present invention. [Figure 19] This figure shows the support column in Figure 18 with belts and steel chains attached. [Figure 20] Figure 18 shows the outline of each component. [Figure 21] This figure shows the working conditions using the support column shown in Figure 18. [Figure 22] This is an explanatory diagram showing the loading and unloading process at a conventional truck berth. [Modes for carrying out the invention]

[0019] A first embodiment of the present invention will be described below with reference to the drawings. In Figure 1, the truck berth according to this embodiment has two stopper rubbers (hereinafter referred to as "projections") 11a and 11b attached to the side surface 10b of the platform 10 at a position where the distance between their outer ends is approximately the same as or slightly longer than the width of the truck. The upper surfaces of the projections 11a and 11b are substantially flush with the upper surface 10a of the platform.

[0020] Support columns 12a and 12b are attached extending vertically upward from the platform 10a along the corners formed by the outer ends of the pair of protrusions 11a and 11b and the platform side surface 10b.

[0021] The support columns 12a and 12b are equipped with a belt (first connecting means) 30 with the structure shown in Figure 2 and steel chains (second connecting means) 40 and 40a with the structure shown in Figure 3. Incidentally, steel chains 40 and 40a have the same structure except for their length. Belt 30 is equipped with a fitting (first fastening part) 32 for fastening to the support columns 12 (12a, 12b) and fittings (second fastening parts) 33 for fastening to rails (truck rails) provided on both sides of the truck bed. Steel chains 40 and 40a are equipped with fittings (first fastening parts) 32 at both ends for fastening to the support columns 12 (12a, 12b).

[0022] As shown in Figure 10, each support column 12 (12a, 12b) is provided with multiple holes (first hooked parts) 12-1 (12-1a, 12-1b) for hooking the first hooking part 32.

[0023] Furthermore, as shown in Figure 4, the track rail 22 is provided with multiple holes (second hooked parts) 22-1 for hooking the second hooking part 33. Note that the belt 30 and steel chains 40, 40a are not shown in Figure 4.

[0024] <Structure of the protrusion> As shown in Figure 12, the protrusions 11a and 11b each consist of a metal base (11-1a, 11-1b) attached to the platform side surface 10b with anchor bolts, etc., and a stopper rubber (11-2a, 11-2b) attached to the metal base. The metal base is mounted so as to be approximately flush with the platform top surface 10a, and the stopper rubber is mounted lower by the thickness of the truck tailgate lifter. The tailgate lifter sits on the stopper rubber of the protrusions 11a and 11b. When the tailgate lifter sits on the stopper rubber, the top surface of the tailgate lifter is approximately flush with the platform top surface 10a.

[0025] <How to install the support posts> The support columns 12a and 12b are attached to the platform side surface 10b with anchor bolts or the like along both outer ends of the projections 11a and 11b. However, the method of attaching the support columns is not limited to this; for example, they may be attached to the metal base sides of the projections 11a and 11b. As shown in Figure 10, the support columns 12 (12a, 12b) have a U-shaped cross-section and are provided with multiple fastening holes 12-1 (12-1a, 12-1b) on at least two opposing sides. The central surface of the support columns 12 (12a, 12b) is provided with holes (not shown) for attachment to the platform side surface 10b, and are attached to the platform side surface 10b or the sides of the projections 11a and 11b by fastening means such as bolts and nuts through these holes. Steel medium-duty shelving (load capacity 300 kg) can be used as the support columns 12 (12a, 12b). Note that the fastening holes on both opposing sides of the support columns 12 are provided at the same position (height). The support column 12 protrudes vertically from the upper surface 10a of the platform, and it is preferable that the height of the protruding portion from the upper surface of the platform is approximately 1200 mm or more. Furthermore, it is preferable for safe operation that the fastening holes 12-1 are provided at positions of at least approximately 1100 mm ± 50 mm and approximately 550 mm ± 50 mm from the upper surface 10a of the platform.

[0026] <Composition of Belt 30> As shown in Figure 2, the belt 30 comprises a belt body 31, a first fastening portion 32, and a second fastening portion 33. The second fastening portion 33 is attached to the belt body 31 via a ring 34. The belt body 31 can be a belt with high load-bearing capacity, such as a sling belt for lifting operations (including fiber slings).

[0027] In the section where the belt 30 is attached to the support posts 12a and 12b, a component that can be hooked onto the hooking holes of the support posts 12a and 12b and the ring 34 is used as the first hooking part 32. On the other hand, in the section where the belt 30 is attached to the track rail 22, a dedicated component for hooking onto the track rail is used as the second hooking part 33. By making the hooking part on the track rail side particularly replaceable in this way, the appropriate hooking part 33 can be attached to the belt body 31 to match the type of track rail of the truck that is being driven.

[0028] <Structure of steel chains 40, 40a> As shown in Figure 3, the constituent chains 40 and 40a are composed of a chain body 41 and first fastening parts 32 at both ends. The steel chain 40 is used to connect adjacent support posts 12 in the non-touching area, and the steel chain 40a is used to connect the open end of a belt 30 attached to one support post 12 to the other support post 12 in the touching area.

[0029] Figure 5 shows the attachment of the belts 30 and steel chains 40 and 40a to the support columns 12a and 12b that surround the vehicle landing area. As shown in this figure, multiple belts 30 are connected to the vehicle landing area side of the support columns 12a and 12b. Furthermore, a steel chain 40a is connected to one of the support columns (support column 12a in Figure 5) at the same position as or near the attachment point of the belts 30. On the non-vehicle landing area side of the support columns 12a and 12b, steel chains 40 are connected between adjacent support columns.

[0030] <Explanation of the work procedure> In the non-loading area, adjacent support posts are always connected by a steel chain 40. In the loading area, when there is no loading or unloading of cargo, as shown in Figure 6, the first fastening portion 32 of the steel chain 40a is attached to the ring 34 of the belt 30 connected to the other support post, thereby stretching the belt 30 and the steel chain 40a together between the support posts 12a and 12b. This prevents accidental falls from the platform when not in operation.

[0031] Next, we will explain the procedures for when the truck is parked. (1) Before starting work, the connection is as shown in Figure 6. First, disconnect the steel chain 40a between the support pillars 12a and 12b in the vehicle landing area and the belt 30 connected to it to return to the state shown in Figure 5. (2) The truck is parked with the cargo bed doors facing the platform and the tailgate lifter is seated on the protrusions 11a and 11b. (3) Then, the other end of the belt 30 (second fastening portion 33) is attached to the fastening hole of the truck rail 22 inside the truck cargo compartment. You may change the order of steps (1) and (2) in the above steps (1) to (3).

[0032] By following the above procedure, during loading and unloading operations, as shown in Figure 7, the truck bed is opened, and the belt 30 and steel chain 40 are stretched continuously across the entire area of ​​the truck bed, tailgate, and platform, thereby preventing accidents such as falls during work.

[0033] After loading and unloading the cargo, all belts 30 are detached from the track rails, and the steel chain 40a on the support column 12a is connected to the belt 30 on the support column 12b, returning the system to the state shown in Figure 6.

[0034] The above describes one loading / unloading area, but as shown in Figure 1, the protrusions 11a, 11b and support columns 12a, 12b can be considered as one set, and multiple sets of protrusions 11a, 11b and support columns 12a, 12b can be provided on the side 10b of the same platform. This makes it possible to perform multiple loading and unloading operations on the platform, and safety can be ensured even when multiple operations are performed simultaneously.

[0035] Next, based on Figure 7, the attachment height of the belt 30 and steel chains 40 and 40a to the support columns will be explained. Figure 7 shows an example where the track rails 22 are installed in two tiers, upper and lower, on both the left and right sides of the truck bed. In this case, the belts 30 from the upper track rails 22 on both the left and right sides are attached to fastening holes on the support columns 12 located at a height of approximately 1100 mm from the platform, and the belts 30 from the lower track rails 22 are attached to fastening holes on the support columns 12 located at a height of approximately 550 mm from the platform. By attaching them in this position, it is possible to effectively prevent falls from the platform without hindering work efficiency. In this case, it is preferable that the steel chains 40 connecting the support columns be attached to fastening holes on the support columns 12 that are opposite to the fastening holes to which the belts 30 are attached.

[0036] If the track rails 22 are provided in only one row on each side of the truck bed, it is preferable to attach them to the fastening holes 12-1 located at a height of approximately 1100 mm from the platform, from each track rail 22. If fastening holes (more specifically, fastening parts formed by two adjacent holes, one above the other) are provided on the support column 12 at intervals of approximately 100 mm, the belt 30 or steel chain 40 can be attached at an appropriate height according to the working conditions, even when there are three or more rows of track rails 22 on one side.

[0037] The length of the belt 30 should preferably be the depth of the truck's tailgate plus the length to the fastening hole near the loading platform opening of the truck rail, with a slight margin added to account for errors during vehicle landing. The length of the steel chain 40a can be determined from the spacing between the support posts 12a and 12b and the length of the belt 30. The length of the steel chain 40 can also be determined based on the spacing between the support posts in the non-landing area.

[0038] (Other Example 1) As shown in Figure 8, a dock leveler 13 may be provided between the protrusions 11a and 11b of the platform 10. This effectively closes the gap between the truck's tailgate lifter and the platform, as shown in Figure 9, enabling safer loading and unloading operations.

[0039] (Another example 2) In the above description, a pair of protrusions 11 (11a, 11b) are attached to the side of the platform in the vehicle landing area. However, as shown in Figure 11, even without these protrusions 11 (11a, 11b), a superior fall prevention effect compared to conventional methods can be achieved. In this case, the support columns 12 (12a, 12b) are attached vertically to the side of the platform at positions corresponding to the sides of the cargo bed when the truck is parked, with a spacing approximately equal to the width of the cargo bed. Other attachment methods are as explained using Figure 1.

[0040] Furthermore, if the projection 11 is provided, the pair of projections 11a and 11b can be integrated into a single rectangular prism shape. In this case, although it is not possible to provide the dock leveler 13 between the projections 11a and 11b as shown in Figure 8, it has the effect of allowing the tailgate lifter to be seated stably.

[0041] (Other Example 3) Platform 10 may be fitted with stopper rubber 113 having a semicircular (kamaboko) cross-section over the entire upper part of its side. In this embodiment, the method of attaching the support columns 12 (12a, 12b) in this case will be described.

[0042] In this case, as shown in Figure 13, a portion of the stopper rubber 11 at the outer edges of the loading platform where the truck is parked is cut vertically by the width of the support column 12. The cut portion is indicated by reference numeral 19. That is, only the portion that the support column 12 will come into contact with when erecting the support column 12 on the platform side 10b is cut, exposing the platform side 10b.

[0043] As shown in Figure 14, the central surface of the U-shaped support column 12 is brought into vertical contact with substantially the entire surface of the exposed platform side 10b. The central surface of the support column 12 is then fixed at two locations, at the top and bottom of the platform side 10b, using anchor bolts 71 as shown in Figure 15.

[0044] As shown in Figure 16, a belt (connecting means) 30 or a steel chain (second connecting means) 40 is attached to the support column 12 installed in this manner at the appropriate height position described above. The method of use is as described above.

[0045] <Effects of this embodiment> As described above, according to this embodiment, it is possible to prevent people and objects from falling during loading and unloading operations, thereby achieving safe work at a low cost. In particular, the configuration of this embodiment requires only the installation of metal support columns on the side of the platform and the outer corners of both protrusions. Therefore, even truck berths that currently lack support columns can have them installed with simple construction, and they can also be easily removed. Furthermore, restoration work, such as when vacating the premises, can be easily carried out.

[0046] This embodiment effectively utilizes the truck rails, which are used to secure and transport cargo to prevent it from shifting during transport, for loading and unloading cargo as well. These truck rails have numerous fastening holes and extend horizontally on both sides of the cargo bed. When loading and unloading cargo, one end of the belt is first attached to the platform support column, and then the other end of the belt is attached to the fastening hole in the truck rail. This allows a high-strength belt to be maintained at an appropriate tension at all times, regardless of the size of the truck, the length of the tailgate lifter, or the parking position. Therefore, after the belt is installed, it acts as a highly safe handrail, sandwiching the tailgate lifter between the platform and the truck bed, effectively preventing workers and cargo from falling.

[0047] In this embodiment, the central surfaces of the U-shaped support columns 12a and 12b are attached to the platform side surface 10b, and the fastening holes on one of the opposing surfaces of the support columns are used for attaching the belt 30 (connecting means), and the fastening holes on the other surface are used for attaching the steel chain 40 (second connecting means). As a result, the belt 30 and the steel chain 40, or the steel chains 40 themselves, do not interfere with each other, and can be attached at appropriate heights.

[0048] Furthermore, in this embodiment, when not in use, instead of connecting the support pillars in the vehicle loading area with a single steel chain, the belt 30 and the steel chain 40a are connected. During loading and unloading operations, the steel chain 40a is not used, but since it is shorter than when connected with a single steel chain 40, it does not get in the way of work, allowing for safer operations.

[0049] Next, a second embodiment of the present invention will be described. In the first embodiment, a case was described in which a pair of support columns 12 (12a, 12b) are provided for a so-called vertical type platform. In this embodiment, however, a case will be described in which support columns are provided for a platform of the type described in Patent Document 1, in which the tailgate lifter is stored in a cavity at the bottom of the platform when a truck is parked (a so-called protruding type).

[0050] When attaching support columns to a vertical type platform, as shown in Figure 17(a), the columns can be secured to the side of the platform in two or more places. However, with a protruding type, as shown in Figure 17(b), the number of fixing points for the columns is limited, making the columns prone to instability. Here, reference numeral 10c indicates the protruding portion of the platform 10.

[0051] The following describes a method for easily and stably installing the support columns to address this problem, with reference to Figure 18. In this embodiment, instead of the U-shaped support column 12, a circular-shaped single-pipe support column 60 is used. Here, as in the first embodiment, the support columns 60 are provided on both the left and right sides of the landing area, and are therefore denoted as 60a and 60b, respectively, with subscripts a and b indicating the respective sides. The same applies to the other elements. Figure 20 shows a list of the parts used in this embodiment.

[0052] To erect the support columns 60, the single pipes 50 for vertical fixing are first fixed into the hollow section of the platform to the protruding type platform.

[0053] The method of fixing involves securing the upper side of the single pipe 50 to the ceiling of the platform projection 10c with a fixing base 52, while the lower side of the single pipe 50 is secured between the bottom surface of the landing area (hereinafter simply referred to as the "bottom surface") 2 and a mini jack 53, thereby fixing the single pipe 50 between the ceiling of the platform projection 10c and the bottom surface 2 with appropriate strength.

[0054] Furthermore, a pipe stand 56 is fixed to the base 2, and a single-pipe support column 60 is erected on the pipe stand 2. Then, a single-pipe horizontal support pipe 51 is installed horizontally between this support column 60 and the single-pipe vertical support pipe 50. As shown in Figure 18, this installation method can be achieved by using a T-shaped pipe joint (for example, a DC chrome tee with a rotation-locking screw) 55 on the support column 60 side and a clamp 54 on the single-pipe vertical support pipe 50 side. By fixing the single-pipe horizontal support pipe 51 at two or more points within the cavity, the support column 60 can be erected stably. Similar to the first embodiment, these support columns 60 are erected in pairs, left and right, to match the width of the truck bed in the loading area. Therefore, the above installation work is performed for each of the pair of support columns 60 (60a, 60b).

[0055] In Figure 18, the support column 60 is installed with a semicircular stopper rubber (projection) 11 attached horizontally along the platform's protruding portion 10c for cushioning. Of course, it is also possible to install the support column 60 without the stopper rubber 11, or to cut a notch in the stopper rubber 11 to the width of the support column 60 and install the support column 60 closer to the platform's protruding portion 10c, or to make other modifications as appropriate.

[0056] In order to stretch a belt (connecting means) 30 or a steel chain (second connecting means) 40 over the single-pipe type support columns 60 (60a, 60b) installed in this manner, single-pipe fittings 62 (62a, 62b) are attached to the appropriate height positions described in the first embodiment, as shown in Figure 19. In addition, end caps 61 (61a, 61b) are attached to the top of the support columns 60 (60a, 60b).

[0057] Each single-pipe fitting 62 is equipped with fittings (attachment parts) 62-1 at two locations for attaching the attachment points 32 of the belt 30 or steel chain 40. The belt 30 is attached to the attachment parts 62-1 of the single-pipe fitting 62 in the vehicle landing area, and the steel chain 40 is attached to the attachment points 62-1 outside the vehicle landing area.

[0058] The locking portion 62-1 of the single-pipe fitting 62 is screw-type on both or one side, so that when the screw is tightened, the tip of the screw protrudes inside the single-pipe fitting 62, tightening and fixing the support column 60.

[0059] Loading and unloading operations at a truck berth configured in this way are the same as in the first embodiment. Figure 21 shows the state in which the belts and steel chains are fastened during the operation.

[0060] <Effects of this embodiment> As described above, according to this embodiment, even for a protruding type platform, support columns can be easily erected and belts can be stretched. In the work area, belts can be stretched between the truck and the support columns, and in the non-work area, chains can be stretched to prevent falls during loading and unloading operations, enabling safe work.

[0061] The present invention is not limited to the embodiments described above, and can be realized by various modifications without departing from its gist. For example, a storage belt for securing cargo inside a truck bed, which has second fastening parts 33 at both ends, may have a first fastening part 32 attached to one end, so that when the truck is parked on a platform, the first fastening part of the storage belt is hooked onto the support columns 12, 60 and the fastening part 33 at the other end is hooked onto the truck rail.

[0062] Furthermore, the configurations described in each embodiment and example can be implemented individually or in combination. [Explanation of Symbols]

[0063] 1. Track berth 11(11a,11b) Protrusion 12(12a,12b),60(60a,60b) Post 13 Dock Leveler 20 Trucks (vehicles) 21 Tailgate Lifter 22 Track Rails 30 Belt (connecting means, first connecting means) 31 Belt body 32 1st hook part 33 Second hook part 40,40a Steel chain (second connecting means) 50 single pipes 51 Single pipe 52 Fixed base 53 Mini Jack 54 Clamps 56 Pipe Stand 61 Terminal cap 62 Single pipe fitting (receiving part) 71 Anchor bolts

Claims

1. A truck berth having a platform for loading and unloading cargo from the truck bed, It comprises a pair of support columns mounted vertically along the side of the platform from the floor surface of the vehicle landing area, Each of the pair of support columns has a fastening portion for connecting with fastening portions of truck rails that extend horizontally on both sides inside the truck bed, and is characterized in that it extends above the height of the top surface of the platform at a distance approximately the same as the width of the truck bed at the truck's landing position.

2. The sides of the platform are provided with projections for seating the left and right ends of the truck's tailgate lifter, respectively, such that their upper surfaces are substantially flush with the upper surface of the platform. The truck berth according to claim 1, characterized in that the pair of support columns are each attached to the corner formed by the outer sides of the projection and the side of the platform.

3. The platform has a protruding portion capable of housing the tailgate lifter of the truck, A first support means is fixed vertically between the ceiling surface of the protruding portion and the floor surface of the vehicle landing portion, One or more second support means fixed horizontally between the first support means and the support column, The truck berth according to claim 1, characterized by being equipped with

4. The platform comprises multiple sets of support columns, with each set consisting of the pair of support columns. The truck berth according to claim 1, characterized in that the support column has two fastening portions at substantially the same height position, one of which fastening portions is for fastening the connecting means, and the other fastening portion is for fastening the second connecting means between itself and the fastening portion of another adjacent set of support columns.

5. A method for performing pre-loading and unloading operations on a truck using a plurality of connecting means, each having a first locking portion and a second locking portion at both ends, in a truck berth according to claim 1, A step of attaching the support column-side connecting means, in which the first hooking portion of the plurality of connecting means is hooked onto the hooking portion of the pair of support columns, The steps include setting the tailgate lifter of the parked truck to approximately the same height as the top surface of the platform, Subsequently, the truck-side connecting means mounting step involves attaching the second fastening portions of the plurality of connecting means to the fastening portions of the truck rails on both sides inside the truck bed, respectively. A work method characterized by including the following.

6. A method for loading and unloading cargo from a truck, performed using a plurality of connecting means having a first locking portion and a second locking portion at each end, in a truck berth according to claim 4, A step of attaching the support column-side connecting means, in which the first hooking portion of the plurality of connecting means is hooked onto the hooking portion of the pair of support columns, The stage of bringing the truck bed close to the platform and landing, Subsequently, the truck-side connecting means mounting step involves attaching the second fastening portions of the plurality of connecting means to the fastening portions of the truck rails on both sides inside the truck bed, respectively. The steps include connecting adjacent support columns in areas where no work is performed with a second connecting means, A work method characterized by including the following.

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