Covering sheet laying system and covering sheet laying method

Abstract

To provide an improved covering sheet application system. [Solution] The covering sheet stretching system 1 comprises a base portion 10, a main roller 20 pivotally supported on the base portion 10, and a hoist 40 that moves the base portion 10 laterally while it is suspended. A covering sheet is wrapped around the main roller 20, and when the covering sheet is stretched across the cargo bed of a vehicle, one end of the covering sheet is locked to one end of the cargo bed, and the covering sheet is pulled out from the main roller 20 as the main roller 20 moves toward the other end of the cargo bed opposite to the one end of the cargo bed, stretching the covering sheet across the cargo bed.

Description

Technical Field

[0001] The present invention mainly relates to a covering sheet laying system and a covering sheet laying method for laying a covering sheet on a loading platform of a vehicle.

Background Art

[0002] For example, Patent Document 1 discloses a sheet hanging jig including a box-shaped sheet storage portion with an open upper surface for storing a带状sheet (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above-mentioned sheet hanging jig, the sheet is stored in the sheet storage portion in a rolled state. However, it is very laborious to roll a large sheet into a roll without any support members. Further, when there are tall luggage on the loading platform of the vehicle, it is necessary for an operator to cover the luggage with the sheet, which is heavy labor.

[0005] Therefore, an object of the present invention is to provide a more improved covering sheet laying system.

[0006] Another object of the present invention is to provide a more improved covering sheet laying method.

Means for Solving the Problems

[0007] The present invention relates to a covering sheet stretching system for stretching a covering sheet over the cargo bed of a vehicle, comprising: a base portion suspended from a predetermined frame; a horizontally positioned main roller pivotally supported on the base portion; and a moving means for moving the base portion laterally, wherein the covering sheet is wound around the main roller, and when the covering sheet is stretched over the cargo bed of the vehicle, one end of the covering sheet is locked to one end of the cargo bed or one end of a workpiece placed on the cargo bed, and as the base portion is moved by the moving means, the main roller moves toward the other end of the cargo bed opposite to the one end, and the covering sheet is pulled out from the main roller and stretched over the cargo bed.

[0008] In this configuration, the effort required for workers to climb onto the truck bed or manually stretch the covering sheet across the truck bed is eliminated. In particular, the reduction in strenuous work on the truck bed has the advantage of preventing accidents such as falls from the truck bed. Furthermore, since the covering sheet is wound around the main roller as a core, it is significantly easier than simply having the covering sheet in roll form.

[0009] Furthermore, a sub-roller is pivotally supported on the base portion, and the sub-roller is biased toward the circumferential surface of the main roller. The covering sheet wrapped around the main roller is sandwiched between the circumferential surface of the main roller and the circumferential surface of the sub-roller.

[0010] In this configuration, the covering sheet wrapped around the main roller is sandwiched between the circumferential surfaces of the main roller and the sub-roller, allowing the covering sheet to be neatly wrapped around the main roller. Furthermore, problems such as the covering sheet wrapping diagonally around the main roller can be avoided.

[0011] Furthermore, a configuration is proposed in which the main roller can be detached from the base portion while the covering sheet is wrapped around it.

[0012] In such a configuration, for example, by preparing multiple main rollers of different widths and pre-wrapping the covering sheet around them, the desired width of the main roller can be swapped out to immediately perform the stretching work.

[0013] The present invention also relates to a method for stretching a covering sheet over the cargo bed of a vehicle, and is characterized by comprising: a winding step of winding the covering sheet around a main roller pivotally supported on a base suspended from a predetermined frame; a locking step of locking one end of the covering sheet to one end of the cargo bed or one end of a workpiece placed on the cargo bed; and a stretching step of pulling the covering sheet from the main roller while moving the base toward the other end of the cargo bed opposite to the one end, with the base suspended, to stretch the covering sheet over the cargo bed.

[0014] In this configuration, when stretching the covering sheet onto the truck bed, the effort of workers having to climb onto the truck bed or manually stretch the covering sheet is eliminated. Furthermore, since the covering sheet is wound around the main roller as a core, it is significantly easier than if the covering sheet alone were in roll form. [Effects of the Invention]

[0015] The covering sheet transfer system of the present invention has the excellent effect of allowing covering sheets to be transferred easily.

[0016] Furthermore, the method for applying the covering sheet according to the present invention has the excellent effect of allowing the covering sheet to be applied easily. [Brief explanation of the drawing]

[0017] [Figure 1] This is a schematic diagram showing the front view of the covering sheet transfer system according to the embodiment. [Figure 2] This is a partial side cross-sectional view mainly showing the main roller according to the embodiment. [Figure 3]It is an explanatory diagram showing the procedure of the covering sheet stretching process according to the embodiment. [Figure 4] It is an explanatory diagram showing the procedure of the covering sheet stretching process according to the embodiment. [Figure 5] It is an explanatory diagram showing the procedure of the covering sheet stretching process according to the embodiment. [Figure 6] It is a schematic diagram showing the front of the covering sheet stretching system according to another embodiment.

Mode for Carrying Out the Invention

[0018] Embodiments of the present invention will be described according to examples. The present invention is not limited to the examples shown below, and design changes can be made as appropriate. Also, for the sake of convenience, the front and back are defined and described in the examples, but the present invention is not limited by this.

[0019] As shown in FIG. 1, the covering sheet stretching system 1 includes a long base portion 10 suspended from a predetermined rail (frame) 60 provided in the facility, a main roller 20 pivotally supported on the base portion 10 in a horizontal posture, a plurality (five) of sub-rollers 30 arranged along the longitudinal direction of the main roller 20, and a hoist 40 as moving means for moving the base portion 10 in the lateral direction (a direction perpendicular to the roller axis of the main roller 20).

[0020] As shown in FIG. 2, the sub-roller 30 is pivotally supported at the tip of a rotating rod 31 pivotally supported on the base portion 10, and the circumferential surface of the sub-roller 30 is biased toward the circumferential surface of the main roller 20 by the elastic force of a coil spring 50 whose one end is locked to the base portion 10 and the other end is locked to the shaft portion of the sub-roller 30.

[0021] Also, guide flange portions 55 that rise wall-like from the circumferential surface of the main roller 20 are formed in a circumferential shape along the circumferential direction of the main roller 20 at both ends of the main roller 20. Such guide flange portions 55 have a function of preventing the displacement of the covering sheet S, and details will be described later.

[0022] Further, the main roller 20 is detachable from the base portion 10. Specifically, both end portions of the base portion 10 that support the main roller 20 are provided with a known bearing (bearing structure) that can be divided vertically. This bearing portion has a structure in which an upper bearing portion and a lower bearing portion are assembled and integrated. Then, by removing the lower bearing portion and lowering the shaft portion of the main roller 20, the main roller 20 can be detached from the base portion 10. With such a configuration, for example, it is also possible to replace it with another main roller 20 around which the covering sheet S is wound in advance.

[0023] Also, when using such a covering sheet stretching system 1, the covering sheet S is wound around the main roller 20 in advance. Here, when winding the covering sheet S around the main roller 20, one end of the covering sheet S is sandwiched between the main roller 20 and the sub-roller 30, and the main roller 20 is rotationally controlled in a predetermined direction to sequentially wind the covering sheet S that has been spread on the floor or the like to the other end (winding step). More specifically, since the sub-roller 30 is biased toward the circumferential surface of the main roller 20, it is possible to wind the covering sheet S in a state where it is sandwiched between the circumferential surface of the main roller 20 and the sub-roller 30. Further, the lower end of the base portion 10 protrudes downward more than the lower end of the main roller 20 mounted on the base portion 10, and a gap is formed between the floor surface and the main roller 20 when the base portion 10 is placed on the floor surface or the like. The winding operation can be performed in a state where the covering sheet S is disposed in the gap, and the work efficiency can be improved.

[0024] Next, a method for stretching the covering sheet will be described based on FIGS. 3 to 5.

[0025] First, as shown in FIG. 3, one end of the covering sheet S is locked to the front end, which is one end of the loading platform C of the vehicle T (locking step).

[0026] Then, as shown in Figure 4, the hoist 40 moves the base section 10 toward the rear end, which is the opposite end from the front end of the loading platform C. At the same time, the covering sheet S is pulled out from the main roller 20 and placed over the loading platform C (stretching process). At this time, the main roller 20 may be controlled to rotate in the direction of feeding out the covering sheet S, or it may be left in a free-rotating state.

[0027] Subsequently, as shown in Figure 5, after the entire covering sheet S has been pulled out from the main roller 20, the covering sheet S is stretched over the loading platform C of the vehicle T by securing the side edges of the covering sheet S to various parts of the loading platform C.

[0028] In this covering sheet laying system 1, when laying the covering sheet S onto the cargo bed C of the vehicle T, there is no need for the worker to climb onto the cargo bed C to perform the work, nor is there any need to manually lay out the covering sheet S, thus significantly reducing the burden on the worker.

[0029] Furthermore, since the covering sheet S wrapped around the main roller 20 is biased toward the circumferential surface of the main roller 20 by the sub-roller 30, it is possible to prevent problems such as the long covering sheet S being wrapped or pulled out at an angle.

[0030] Furthermore, since the main roller 20 is provided with a guide flange portion 55, problems such as the long covering sheet S getting wrapped around or pulled out at an angle can be prevented even more effectively.

[0031] Furthermore, since the main roller 20 is detachable from the base 10, if multiple main rollers 20 with different widths already wrapped with the covering sheet S are prepared, the work of stretching the covering sheet S of the required width can be performed efficiently.

[0032] Furthermore, the covering sheet transfer system 1 can be used to re-wrap the covering sheet S around the main roller 20.

[0033] In the above-described embodiment, the dimensions and shapes of each part can be freely selected as appropriate. Furthermore, when implementing the method of stretching the covering sheet, one end of the covering sheet S may be secured to one end of the workpiece W placed on the cargo bed C of the vehicle T. Also, as shown in Figure 6, the covering sheet stretching system may of course be one in which the main roller 20 is suspended at a single point by a wire L, and this can be appropriately selected from a two-point suspension configuration as shown in Figure 1. [Explanation of symbols]

[0034] 1.70 Covering Sheet Installation System 10 Base section 20 Main Rollers 30 Sub-roller 31 Rotating rod 40 hoists 50 Coil Springs 55 Guide flange section 60 Rails (structure) C Cargo bed L wire S Covering sheet T Vehicle Double job

Claims

1. A covering sheet stretching system for stretching a covering sheet across the cargo bed of a vehicle, A base unit suspended from a designated structure, The main roller, which is pivotally supported on the base portion, is in a horizontal position. A means for moving the base portion in the lateral direction, Equipped with, The main roller is wrapped with the covering sheet. When the covering sheet is stretched across the vehicle's cargo bed, one end of the covering sheet is secured to one end of the cargo bed or one end of a workpiece placed on the cargo bed, and as the base portion moves by the moving means, the main roller moves toward the other end of the cargo bed opposite to the one end, and the covering sheet is pulled out from the main roller and stretched across the cargo bed. A covering sheet stretching system characterized by the following:

2. A sub-roller is pivotally supported on the base portion, and the sub-roller is biased toward the circumferential surface of the main roller. The covering sheet wrapped around the main roller is sandwiched between the circumferential surface of the main roller and the circumferential surface of the sub-roller. The covering sheet stretching system according to claim 1.

3. The main roller is detachable from the base portion while the covering sheet is wrapped around it. A covering sheet stretching system according to claim 1 or claim 2.

4. A method for stretching a covering sheet over the cargo bed of a vehicle, The process involves winding a covering sheet onto a main roller pivotally supported on a base suspended from a predetermined structure, A locking step of locking one end of the covering sheet to one end of the loading platform or one end of the workpiece placed on the loading platform, The process of stretching the covering sheet onto the loading platform is as follows: While the base is suspended, the covering sheet is pulled out from the main roller and stretched onto the loading platform. including A method for applying a covering sheet, characterized by the features described above.

Images