JP7033025B2 - Curing tools for vehicle loads and how to use them - Google Patents

Description

The present invention uses a covering sheet for covering a load on a loading platform of a transport vehicle, a curing tool for a vehicle load consisting of an operation rod used for laying the covering on the load from the ground, and a covering sheet using an operation rod. It is related to the usage of the curing tool to be laid on the load.

For example, if the content of naturally-derived heavy metals mixed in the excavated soil (construction-generated soil) generated from the ground or ground at a construction site exceeds the environmental standard value, the excavated soil is contaminated soil. Treated as. For this reason, when transporting this contaminated soil by a transport vehicle (dump truck), the Ministry of the Environment has instructed us to take measures such as "covering with a sheet" to avoid scattering of the contaminated soil ( See Non-Patent Document 1).

Originally, the method of hanging the seat on the loading platform (excavated soil) of the transport vehicle was to build a scaffolding including a staircase for laying the seat on the side of the area where the transport vehicle should stop, and to use the scaffolding as the loading platform of the transport vehicle. Sheets were laid by the method of going back and forth between them. However, as long as the sheet laying work is done on the load such as excavated soil, it has not been possible to completely prevent the worker from falling from the loading platform.

As a method of avoiding the danger of the method of using scaffolding, the winding and winding of the string-like material such as wires by the winding device installed on the roof part (roof carrier) near the driver's seat of the loading platform is used. There is a way to pull out and store the seat. This method is a method of pulling out and storing the sheet integrated into the string-like material by rewinding and winding the string-like material (see Patent Documents 1 and 2), and directly rewinding and winding the sheet. (See Patent Documents 3 and 4).

These methods have the advantage of being able to automatically pull out and store the sheet by using a take-up device. However, although the take-up device can apply tension in the length direction of the sheet, it cannot apply tension to both sides in the width direction of the sheet. It may be necessary to perform auxiliary work such as adjusting the tension of the seat, and it is difficult to fully automate the drawer (laying).

On the other hand, there is a method of laying the sheet on the load by devising a way to fold the sheet, installing it on the load, and then using a bar that can be unfolded by manual operation from the ground. Yes (see Patent Document 5). In this method, the tip of the auxiliary rope, which is folded in the width direction in advance for deployment work and is connected to the sheet wound in the length direction, is placed on the rear side of the loading platform, and the tip of the key rod is hooked on the tip of the auxiliary rope. By pulling the key bar to the rear of the loading platform, the seat can be expanded to the rear of the loading platform (paragraph 0018, FIG. 2). However, since the seat is folded in the width direction in advance and unfolded in the width direction on the load, it is mainly suitable for the load to be loaded in a three-dimensional shape that is convex upward on the loading platform. (Fig. 2- (b)), it is not suitable for a load that does not rise upward from the side tilt (side plate) of the loading platform.

Ministry of the Environment "Guidelines for Transporting Contaminated Soil (Revised 2nd Edition)" Chapter 3 Standards for Transport (Article 17 of the Law) 3.1 General Transport (Rule 65, Item 1)

Japanese Unexamined Patent Publication No. 6-344822 (paragraphs 0007 to 0014, FIGS. 1 to 3) Japanese Patent No. 3027817 (paragraphs 0011 to 0022, FIGS. 1 to 6) Utility Model Registration No. 3083828 (paragraphs 0005 to 0009, FIGS. 1 to 9) Japanese Patent No. 5637524 (paragraph 0009, FIGS. 1 to 4-4) JP-A-2002-127810 (Claim 3, paragraph 0018, FIG. 1, FIG. 2)

In Patent Document 5, at least the rolled sheet is placed on the load, and when the front side of the sheet is fixed to the loading platform, the operator must climb on the loading platform step. At this time, even if the tip of the auxiliary rope can be arranged closer to the rear of the loading platform, it is easy to hook the tip of the key rod held by the worker on the ground behind the loading platform to the tip of the auxiliary rope on the load. is not it.

For example, even if the tip of the auxiliary rope can be pulled out to the rear side of the loading platform when installing the seat on the load, it is accurate to hook the tip to the tip of the auxiliary rope by operating the key rod on the ground. Is a necessary work. After all, it is imagined that the work of hooking the tip of the key rod to the tip of the auxiliary rope must be done by the worker on the load, and it is considered that the work on the load cannot be completely excluded.

From the above background, the present invention proposes a curing tool for a vehicle load and a method of using the same, which eliminates the need for an operator to get on the load while relying on manual operation.

The curing tool for a vehicle load according to claim 1 covers the load loaded on the loading platform of the transport vehicle from above, and is in front of the transport vehicle when laid on the load in the length direction. The covering sheet is divided into a front side section located on the side and a rear side section located on the rear side of the loading platform, and both sides of the front side section of the covering sheet are held in the width direction to hold the covering. Equipped with a single operating rod operated on the ground to lay the seat on the load.
A tension-bearing front annular member and a rear annular member connected to the transport vehicle are connected to both sides of the covering sheet in the width direction of the front section and both sides of the rear section in the width direction. Being done
The operating rod projects from only one operating unit to be operated and the upper end of the operating unit in a direction intersecting the axial direction of the operating unit, and is located above the uppermost portion of the load, and is the covering sheet. Has two parts of the support part to support
Holding portions for holding the front annular member of the covering sheet are provided at least at two positions corresponding to both sides of the covering sheet in the width direction of the supporting portion .
It is a constituent requirement that the operation portion and the support portion are continuous, the operation rod has a unified shape, and the operation portion is convexly curved toward the opposite side of the covering sheet .

The "front side of the covering sheet" refers to the front side (driver's seat side) of the transport vehicle (hereinafter referred to as "vehicle") 6 when the covering sheet 2 is laid on the load as shown in FIG. 6- (c). Refers to a section closer to the front with respect to the intermediate portion in the length direction of the covering sheet 2. The "rear side of the covering sheet 2" refers to the rear side of the loading platform 7 of the vehicle 6, and refers to a section closer to the rear with respect to the intermediate portion in the length direction of the covering sheet 2. The phrase "distinguished between the front side and the rear side in the length direction" means that the covering sheet 2 is oriented in the length direction in terms of use. The load includes the excavated surplus soil described above regardless of the type. The vehicle 6 is mainly a dump truck.

The front annular member 3 and the rear annular member 4 are connected to the front side and the rear side of the covering sheet 2, respectively, but in claim 1, the front annular member 3 is one of the sections closer to the front of the covering sheet 2. It suffices to be connected to the portion, and the rear annular member 4 may be connected to any part of the section closer to the rear, and in principle, there is no limitation on the connecting position within the range of the front side and the range of the rear side, respectively. .. However, since the adjustment section 2A may be formed on the rear side of the covering sheet 2 in order to cope with the difference in the length dimension of the loading platform 7 as described later (claim 2 ), the rear annular member 4 Is connected to the range of this adjustment section 2A or the range close to the adjustment section 2A, but the front end of the covering sheet 2 is moved to the front part of the loading platform 7 in order to cover the entire length of the load. The front annular member 3 is mainly connected to a position near the front end of the covering sheet 2.

Since the front annular member 3 and the rear annular member 4 are annular members, they have a closed shape like a rubber band at least in the state of using the front annular member 3 and the rear annular member 4. The "use state" is from the laying work of the covering sheet 2 to the end of the laying work, while the front side annular material 3 and the rear side annular material 4 are connected to the vehicle 6 (laid on the load). Meaning. Even when the front annular member 3 is held by the operation rod 5, it is included in the "usage state of the front annular member 3". "At least" includes that the front annular member 3 and the rear annular member 4 are not necessarily closed, for example, like a string whose ends are not tied, when not in use, and should be closed in use. It means that it should be done.

"The front annular member 3 and the rear annular member 4 can bear the tension" means that both the front annular member 3 and the rear annular member 4 are used at least in the state of using the front annular member 3 and the rear annular member 4. It means that the tensile force can be borne. Specifically, when the front annular member 3 is held by the operating rod 5, the tensile force transmitted from the operating rod 5 to the front annular member 3 can be borne, and the front annular member 3 and the rear annular member 3 can be borne. While the annular member 4 is connected to the vehicle 6, it is possible to bear the tensile force applied to the front annular member 3 and the rear annular member 4 at the time of binding to the vehicle 6. However, in reality, it is appropriate that the front annular member 3 and the rear annular member 4 have elasticity to expand and deform when tension is applied and restore to the original shape when released, and have a stretchable property. .. The "operating rod that holds both sides in the width direction on the front side of the covering sheet" in claim 1 means that the operating rod 5 holds the front annular member 3 connected to both sides in the width direction on the front side of the covering sheet 2. Say.

The front annular member 3 and the rear annular member 4 are both connected to any part of the vehicle 6 after the covering sheet 2 is laid on the load, but the front side is connected during the laying work of the covering sheet 2. The annular member 3 is held by the operating rod 5. The rear annular member 4 may be connected to the vehicle 6 during the laying work of the covering sheet 2. The front annular member 3 and the rear annular member 4 are connected to a position of the vehicle 6 such as the loading platform step 73 of the vehicle 6 or its vicinity so that the operator does not have to get on the load.

"The upper end of the operating rod holds the front annular member of the covering sheet" in claim 1 means that the "holding portion 53" provided or formed on the upper end of the operating rod 5 is covered in some way. It refers to holding or supporting the front annular member 3 of the sheet 2. Further, the front annular member 3 is directly locked, sandwiched, or connected to the holding portion 53, and is indirectly connected (connected) by the holding portion 53. The purpose is that the holding (supporting) method of 3 does not matter. "Locking" includes being wound. There is one or two or more operation rods 5 constituting the curing tool 1 (reference example) , and the holding portion 53 is attached to each (one) operation rod 5 at one place or at a plurality of places.

Since the method of holding the front annular member 3 by the holding portion 53 is not limited, the shape of the holding portion 53 is not limited. For example, when the front annular member 3 is simply locked and held by the holding portion 53, the holding portion 53 is an operation rod as shown in FIGS. 1 (a) (reference example) and 2 (reference example) . If the shape is branched from the main body 51 side of No. 5 toward the upper side in a branch shape, or is bent or curved into an L shape or the like from the upper side to the lower side as shown in FIG. 3 (reference example) . good. The "branched shape" includes, for example, a shape such as a spork. When the front annular member 3 is directly or indirectly connected, the holding portion 53 may be formed in a ring shape as shown in FIG. However, after the laying of the covering sheet 2 is completed, the front annular member 3 is separated from the holding portion 53 and connected to the vehicle 6, so that the holding portion 53 is connected to the vehicle 6, for example, by lowering the operation rod 5. It is rational in terms of the efficiency of attachment / detachment that the shape is simple with the upper side open so that the can be detached from the holding portion 53.

When there is only one operating rod 5, the operating rod 5 is bent into an L shape or the like as a whole so that the upper end portion (tip portion) is located above the uppermost portion of the load, for example, as shown in FIG. It has a curved shape similar to that. The holding portions 53, 53 are formed or connected (connected) at at least two locations corresponding to the positions on both sides of the covering sheet 2 in the width direction in the section located on the load. In this case, the operation rod 5 has a length from the operator's hand located on the ground on one side in the width direction of the loading platform to the sky above the load.

In the example shown in FIG. 4, when the operator holds the lower end of the operation rod 5 and the section located on one side of the loading platform 7 is erected, the operation rod 5 has a uniform cross section or a uniform material in the axial direction. If this is the case, since the center of gravity of the entire operating rod 5 is located closer to the loading platform 7 than the lower end portion, a moment due to eccentricity acts on the hand held by the operator. This eccentricity can be reduced by changing the cross section or material of the operating rod 5 or by bending the section of the operating rod 5 located on one side of the loading platform to the opposite side of the loading platform 7 as shown in FIG. , It is possible to reduce the moment. It is rational that the operation rod 5 is formed to be stretchable or foldable for the convenience of storage in the driver's seat or the like when not in use.

When there are two operating rods 5 (reference example) , the upper end portion 50 of each operating rod 5 has a holding portion 53 . In this case, the operation rods 5 are arranged at positions on both outer sides of the loading platform 7 in the width direction, and are basically operated by two workers. Since the two operating rods 5 and 5 holding the two front side annular members 3 and 3 of the covering sheet 2 move from the rear side to the front side of the loading platform 7 at the same time in principle, they move in the width direction to the covering sheet 2. There is an advantage that the covering sheet 2 can be laid on the load in a tensioned state, and the two front annular members 3 and 3 can be connected to the vehicle 6 as they are (tensioned). If the side tilt (side plate) 71 of the loading platform 7 has a hook or the like for temporarily fixing the operating rod 5, the operating rod 5 can be moved one by one from the rear side to the front side of the loading platform 7. Therefore, 2 It is also possible to operate the operation rods 5 and 5 of the book by one person.

In addition, there is no reason why the plurality of operation rods 5 (reference example) must be operated by two people, and since three or more workers may operate the operation rods 5, three or more operation rods 5 are used. Sometimes used. It is also possible for two people to operate the three operating rods 5.

As described above , one worker located on the ground on one side in the width direction of the vehicle 6 holds (holds) the operation rod 5 and moves to the rear side or the middle part to the front side of the loading platform 7. , The front end of the covering sheet 2 can be moved to the front end of the loading platform 7. That is, the laying work of the covering sheet 2 can be completed only by holding the front annular members 3 and 3 on the operating rod 5 and moving the operating rod 5.

After moving the front end of the covering sheet 2 to the front end of the loading platform 7, the front annular member 3 may be connected to the loading platform step 73 or the like of the vehicle 6, and the rear annular member 4 may be connected to the loading platform 7. Since it is sufficient to connect to the rear tilt 72, the rear bumper, etc., it is necessary for the operator to get on the loading platform 7 and the loading platform step 73 in order to connect the front annular member 3 and the rear annular member 4 to the vehicle 6. Does not occur. Therefore, in the invention of claim 1 or less, the laying of the covering sheet 2 depends on the manual operation, and the worker is freed from the need to get on the load, so that the safety of the worker is ensured.

Since the length of the loading platform 7 may differ depending on the scale of the vehicle 6 and the like, the covering sheet 2 may have a length suitable for the length dimension of the loading platform 7 of the maximum scale vehicle 6 to be targeted. It is effective in dealing with differences in vehicle size. In this relationship, when the length of the covering sheet 2 has a size corresponding to the maximum scale vehicle 6, when it is used for a vehicle 6 having a smaller scale, an extra length is generated on the rear side of the covering sheet 2. It will be. In preparation for such a situation, it is appropriate to secure the adjustment section 2A on the rear side of the covering sheet 2 (claim 2 ).

Specifically, the rear annular member 4 is connected to a position closer to the front than the rear end portion of the covering sheet 2 in the section on the rear side of the covering sheet 2, and the connection point of the rear annular member 4 to the covering sheet 2 is connected. The section from to the rear end of the covering sheet 2 is used as an adjustment section 2A for adjusting the length covering the loading platform 7 of the vehicle 6 (claim 2 ). Insertion holes 2b for inserting a string 23 for rounding (bunching) the adjustment section 2A when the adjustment section 2A is not used are formed at least on both sides of the adjustment section 2A in the width direction. When the adjustment section 2A is not used, the adjustment section 2A is kept in a rounded state by inserting the string 23 into the plurality of insertion holes 2b of the rounded (bundle) adjustment section 2A. “At least both sides in the width direction” means that the insertion hole 2b may be formed also in the intermediate portion in the width direction as shown in FIG. 1- (a).

In this case, when an extra length section is generated on the rear side of the covering sheet 2, the extra length section is rounded as the adjustment section 2A. It is connected to a close position. Since the adjustment section 2A is prepared for the case where an extra length section occurs, the extra length section may be the total length of the adjustment section 2A or a part of the adjustment section 2A. Since the extra length section of the adjustment section 2A is rounded according to the length dimension of the vehicle used, the rear annular member 4 is connected to or near the middle portion of the extra length section.

In claim 2 , the extra length section generated according to the length dimension of the vehicle used is rounded, so that the extra length section does not hang down from the rear of the loading platform 7 while coping with the difference in the length dimension of the vehicle used. Since the state can be set, it is possible to prevent the extra length section from covering the permission number displayed on the surface of the rear tilt 72 behind the loading platform 7.

The method of using the curing tool 1 according to claim 1 or 2 is to lay the covering sheet 2 on the load loaded on the loading platform 7 of the transport vehicle 6 by using the operation rod 5 (claim). Item 3 ).

In this method, the operation rod 5 is held by the holding portion 53 of the operation rod 5 and the operation rod 5 is held while the rear side of the covering sheet 2 is arranged on the rear side or the lower side from the rear side of the loading platform 7. A step of moving the loading platform 7 from at least one side in the width direction to the front side of the loading platform 7, and after moving the front side of the covering sheet 2 to the front side of the loading platform 7, the front side annular member 3 and the rear side annular member 3 The process comprises connecting the material 4 to the transport vehicle 2, and by going through the plurality of steps, a state in which the covering sheet 2 is laid on the load loaded on the loading platform 7 can be obtained (claim 3 ). "Move the operation rod 5 to the front side of the loading platform 7" means to move the front side annular members 3 and 3 held by the holding portion 53 of the operating rod 5 to the front side of the loading platform 7, and to move the front side annular member 3 to the front side. The front side portion of the covering sheet 2 to which the materials 3 and 3 are connected is moved to the front side of the loading platform 7.

The method of holding the front annular member 3 to the holding portion 53 of the operating rod 5 is not limited as described above, and the number of operating rods 5 may be one or a plurality. "Keeping the rear side of the covering sheet on the rear side or the lower side from the rear side of the loading platform" means that the portion (section) on the rear side of the covering sheet 2 is closer to the rear side of the loading platform 7 or is rearwardly tilted behind the loading platform 7. It means that it is left on the rear side or the lower side of 72.

The rear annular member 4 of the covering sheet 2 is connected to the rear of the loading platform 7 when the front annular member 3 is moved to the front side of the loading platform 7 by the operation rod 5, and the front annular member 3 is connected to the loading platform 7. It may be connected after being connected to the front of 7. That is, when the operation rod 5 (front annular member 3) is moved to the front side of the loading platform 7, it does not matter whether the rear annular member 4 is connected to the vehicle 6, the front annular member 3 and the rear annular member 3 are connected. The order of connection of the material 4 to the vehicle 6 does not matter.

"Move the operating rod 5 from at least one side of the loading platform 7 to the front side of the loading platform 7" means that the holding portion 53 of the operating rod 5 is a front annular member at the start of this movement. Since 3 is held, it means that the front annular member 3 is moved to the front side of the loading platform 7 together with the front end portion of the covering sheet 2 by using the operation rod 5. "From any part on one side in the width direction" means "from the rear side of the loading platform 7" or the like, when the operation rod 5 starts moving the covering sheet 2 to the front side of the covering sheet 2 on the front side. It means an arbitrary position of "one side in the width direction of the loading platform 7" where the front side portion of the is arranged. The "front side of the loading platform 7" refers to a position where the front side annular member 3 is connected to the vehicle 6 after the front side of the covering sheet 2 is moved to the front side of the loading platform 7.

After the operation rod 5 (front annular member 3) has been moved to the front side of the loading platform 7, the front annular member 3 and the rear annular member 4 are connected to the front side and the rear side of the vehicle 6, respectively, to connect the covering sheet 2 to the front side and the rear side. The laying work is completed. Here, since the front annular member 3 and the rear annular member 4 can bear the tension, the front annular member 3 and the rear annular member 3 and the rear annular member 4 are in a state where the tension is applied to the front annular member 3 and the rear annular member 4. Since the annular member 4 can be restrained by binding the annular member 4 to the vehicle 6 or the like, the covering sheet 2 is laid on the load in a state where tension is applied at least in the length direction. When the covering sheet 2 is moved by using two or more operating rods 5 on both sides of the loading platform 7 in the width direction (reference example) , tension is also applied to the covering sheet 2 in the width direction as described above. It is kept in the same state as it was.

If the front annular member 3 and the rear annular member 4 are particularly stretchable, the front annular member 3 and the rear annular member 4 are stretched when tension is applied to the covering sheet 2, and the front annular member 3 and the rear annular member 4 are stretched after being bound to the vehicle 6. By releasing the state, tension can be applied to the covering sheet 2, so that the handling workability of the front annular member 3 and the rear annular member 4 is good.

Since the curing tool includes a covering sheet that covers the load loaded on the loading platform of the transport vehicle from above and one operating rod that holds both sides of the covering sheet in the width direction on the front side, the curing tool is provided on one side in the width direction of the vehicle. By moving from the rear side to the front side of the loading platform while holding the operation rod by one worker located on the ground, the front end of the covering sheet is moved to the front end of the loading platform. The laying work of the covering sheet can be completed.

After moving the front end of the covering sheet to the front end of the loading platform, the front annular member may be connected to the vehicle carrier step or the like, and the rear annular member may be connected to the rear tilt of the loading platform. There is no need for the operator to get on the bed or on the bed step to connect the side ring and the rear ring to the vehicle. Therefore, while the laying of the covering sheet depends on the manual operation, the worker is freed from the need to get on the load, so that the safety of the worker can be ensured.

(A) is a configuration example of a curing tool consisting of a combination of a covering sheet in which a front annular member and a rear annular member are connected and having an adjustment section and an operation rod used in pairs of two (reference example). (B) is a perspective view showing a rounded adjustment section of the covering sheet shown in (a). (A) is an elevation view showing another production example (deformation example) (reference example) of the operation rods used in pairs, and (b) is a side view of (a). (A) is a perspective view showing another manufacturing example (reference example) of the operation rods used in pairs, and (b) is an enlarged view of the holding portion portion of (a). It is an elevation view when viewed from the rear side of the vehicle which shows the manufacturing example of the operation rod used by one, and the state that the front side annular material on both sides in the width direction is connected (held) to the operation rod. .. It is an elevation view which showed the other manufacturing example of the operation rod used by one, and the state that the front side annular member on both sides in the width direction is connected (held) to the operation rod. (A) to (c) are schematic views showing the procedure of the work of moving the operation rod from the rear side to the front side of the vehicle on the ground on one side in the vehicle width direction and laying the covering sheet on the load. .. (A) is an elevation view of the rear side of the vehicle showing the state (reference example) when the work of laying the covering sheet using two operation rods is started, and (b) is the broken line circle of (a). The enlarged view of (c) is an elevation view of the rear side of the vehicle showing the state when the laying of the covering sheet is completed. (A) is an enlarged view of FIG. 7- (a), and (b) is an enlarged view of FIG. 7- (c).

FIG. 1- (a) covers the load loaded on the loading platform 7 of the transport vehicle (hereinafter referred to as the vehicle) 6 from above, and covers the covering sheet 2 which is divided into the front side and the rear side in the length direction. A vehicle load curing tool 1 provided with at least one operating rod 5 used for ground operation, holding both sides of the front side of the seat 2 in the width direction and laying the covering sheet 2 on the load. An example (reference example) of the combination (configuration) of is shown.

The front annular members 3 and 3 that can bear tension and are connected to the vehicle 6 are connected to both sides in the width direction of the front side of the covering sheet 2, and are connected to the vehicle 6 on both sides in the width direction on the rear side. The rear annular members 4 and 4 that can bear the tension are connected. "Tension can be borne" means that tension (tensile force) can be borne, and basically it does not matter whether it can be expanded or contracted. However, in actual use, if the ease of handling (workability) of the front annular material 3 and the rear annular material 4 is taken into consideration, the original shape is expanded and deformed when the tension is applied, and the original shape is released when the tension is released. It is desirable to have a stretchable property that restores to. Both the front annular member 3 and the rear annular member 4 have an annular closed shape at least in the used state, but do not necessarily have to be closed except in the used state.

At the upper end of the operation rod 5, one or a plurality of holding portions 53 for holding the front annular member 3 of the covering sheet 2 are formed or connected (connected). When stretchability is required, the materials used for the front annular material 3 and the rear annular material 4 are mainly rubber, synthetic fibers, etc., but when the tension is borne until it is fully stretched and the tension is released. Any material can be used as long as it has the property of returning to its original shape.

The front annular members 3 and 3 are connected to both sides in the width direction of any part of the front side when the covering sheet 2 is divided into a front side and a rear side with respect to the intermediate portion in the length direction, and the rear annular member 3 and 3 are connected to each other. 4 and 4 are connected to both sides in the width direction of any part on the rear side. "Both sides (position) in the width direction" refers to a position closer to both sides in the width direction than the center position in the width direction, and is not necessarily a position at both ends in the width direction.

However, when the covering sheet 2 is laid on the load, the front end of the covering sheet 2 is aligned with or near the front end of the loading platform 7, which is the length of the covering sheet 2. It is rational to arrange the covering sheet 2 toward the front end portion of the covering sheet 2 without causing an extra length while applying tension in the direction. From this, as shown in FIG. 1- (a), it is appropriate that the front annular members 3 and 3 are connected to the front end of the covering sheet 2 or its vicinity. For example, polyester canvas, cotton canvas, etc. are used for the covering sheet 2, but it is assumed that the covering sheet 2 is laid on the load in a state where a certain degree of tension is applied in the length direction and the width direction. The material is not particularly limited as long as it has a tensile strength that can withstand the tension.

At the connection point between the front annular member 3 and the rear annular member 4 of the covering sheet 2, the covering sheet 2 is prevented from being broken by the tensile force transmitted from the front annular member 3 and the rear annular member 4 to the covering sheet 2. The ring (eyelet) 21 is fixed, and the front annular member 3 and the rear annular member 4 are directly or indirectly connected to the ring 21. In this case, the hole on the inner peripheral side of the ring 21 becomes a connecting hole for connecting the front annular member 3 and the rear annular member 4. "Indirectly" means that the front annular member 3 and the rear annular member 4 are attached to the ring 21 in order to facilitate the attachment / detachment work of the front annular member 3 and the rear annular member 4 to the ring 21. It means that the hook (carabiner hook) 22 that can be connected (locked) and disconnected (released) may be connected in advance.

FIG. 1- (a) shows an adjustment section for adjusting the length of the section from the connection point of the rear annular member 4 to the covering sheet 2 to the rear end portion of the covering sheet 2 so as to cover the loading platform 7 of the vehicle 6. An example of the case where it is secured as 2A is shown. In this case, as shown in FIG. 1- (b), insertion holes 2b for inserting the string 23 for bundling the adjustment section 2A are formed on at least both sides of the adjustment section 2A in the width direction when the adjustment section 2A is not used. To. The rear annular member 4 is connected to the range of the adjustment section 2A closer to the front than the rear end portion of the covering sheet 2 or a position close to the adjustment section 2A. FIG. 1- (a) shows a state in which the insertion holes 2b are formed at a plurality of locations not only on both sides in the width direction of the adjustment section 2A but also in the intermediate portion in the width direction.

The total length of the covering sheet 2 is basically the length dimension of the loading platform 7 of the largest vehicle 6 to which the covering sheet 2 is used so that the covering sheet 2 is applied to a plurality of vehicles 6 having different scales. Since it has a corresponding size, the adjustment section 2A is a section for the extra length generated on the rear side of the covering sheet 2 when used for a vehicle 6 having a scale smaller than the maximum scale vehicle 6. The reason why the extra length is generated on the rear side of the covering sheet 2 is that the front end of the covering sheet 2 is aligned with the front end of the loading platform 7 as shown in FIG. 6- (c). 2 is laid on the load.

When the adjustment section 2A is not used, the adjustment section 2A is, for example, rolled from the rear end portion of the covering sheet 2 toward the intermediate portion side in the length direction as shown in FIG. 1- (b), and the adjustment section 2A is rounded. The rolled portion is bundled by inserting the string 23 into any of the insertion holes 2b in the portion other than the portion, winding the string 23 around the rolled portion, and binding the cord 23. At this time, the rear annular member 4 is connected to a portion other than the rounded portion.

The operation rod 5 (reference example) shown in FIG. 1- (a) shows an example of the operation rod 5 that holds the covering sheet 2 in pairs on both sides in the width direction. In the example shown here, the upper end portion 50 of the operation rod 5 is composed of a main body portion 51 and a holding portion 53 that can be opened and closed at a constant angle around the horizontal axis 52 with respect to the main body portion 51, and the holding portion 53 is the upper end portion of the operation rod 5. While being pivotally supported by the horizontal axis 52 of the tubular main body 51 formed in the portion 50, it is freely supported from the main body 51 to the outer peripheral side and the inner peripheral side thereof.

In the case of this example, the front annular member 3 is held by the holding portion 53 when protruding from the main body portion 51, or by being locked to the intersecting portion between the main body portion 51 and the holding portion 53 from above. Ru. The arrow on the side of the main body 51 in FIG. 1- (a) indicates that the upper end 50 including the holding portion 53 and the main body 51 can expand and contract in the axial direction with respect to the lower portion other than the upper end 50, and when contracted. Indicates that it can be stored. In the example shown here, the holding portion 53 can be stored in the main body portion 51 for the convenience of storage in the driver's seat of the vehicle 6 when the operation rod 5 is not used, and the upper end portion 50 can be expanded and contracted with respect to the lower portion thereof. Although the operation rod 5 is formed, the holding portion 53 can be stored and the upper end portion 50 does not necessarily have to be expandable and contractible.

FIGS. 2- (a) and (b) (reference example) show a modification of the operation rod 5 shown in FIG. 1- (a), in which the upper end surface of the holding portion 52 when stored in the main body portion 51 is the main body portion. An example of the case where the 51 is aligned with the upper end surface is shown. 2 (a) shows the elevation of the operation rod 5 when viewed in the direction of the horizontal axis 52, and (b) shows the side surface in the orthogonal direction of (a).

3 (a) and 3 (b) (reference example) show that the upper end portion 50 (main body portion 51) of a ready-made bar having a structure that can be expanded and contracted in two stages in the axial direction is curved in a U shape. Alternatively, an example of manufacturing the operation rod 5 when the holding portion 53 as a hook bent into an L shape is fixed (connected) is shown. In this example, since the bar itself can be expanded and contracted in two stages in the axial direction, the length becomes about 1/3 when contracted. Further, there is no distinction between the main body 51 and the upper end 50 in the examples shown in FIGS. 1- (a) and 2, and the holding portion 53 remains exposed to the outside of the main body 51, so that it is horizontal in the example of FIG. There is no axis 52. FIG. 3 shows an example of manufacturing the operation rod 5 having the simplest form.

FIG. 4 shows an example of manufacturing the operation rod 5 when the covering sheet 2 is laid on the load by using one operation rod 5. The operation rod 5 shown here is supported by the operator by the side of the loading platform 7, is connected to the operation unit 54 to be (moved) operated, and the upper end portion of the operation unit 54, and intersects the axial direction of the operation unit 54. It consists of two parts of the support portion 55 that overhangs in the direction and supports the covering sheet 2, and the front annular members 3 and 3 on both sides of the covering sheet 2 in the width direction are connected to and held at the two parts of the support portion 55. The holding portions 53 and 53 are connected. In the example shown here, the holding portion 53 is formed in an annular shape like the ring 21 of the covering sheet 2, but the holding portion 53 is connected in some way such that the front annular member 3 is locked (hooked). The shape of the holding portion 53 does not matter in this example as long as it has a shape to be held.

In order to make the operation rod 5 shown in FIG. 4 retractable in the vehicle 6, at least one of the operation portion 54 and the support portion 55 can be expanded and contracted in the axial direction, or the support portion 55 is provided as shown in the drawing. It is conceivable that the operation unit 54 is rotatably connected to the horizontal axis 52. In this example, since the support portion 55 needs to be held by the operation unit 54 in a crossed state such as orthogonal to the operation unit 54 in the used state, for example, as shown by an arrow in FIG. 4, the support portion 55 is excellent around the horizontal axis 52. The support portion 55 is rotatably supported by the operation portion 54 with respect to the operation portion 54 on the corner side. When the support portion 55 is opened as shown in the drawing, it is connected to the operation portion 54 in a restrained state such as engaging with the operation portion 54 when the inferior angle side becomes 90 °, for example.

In FIG. 5, the operation portion 54 and the support portion 55 of the operation rod 5 shown in FIG. 4 are continuous, and the operation rod 5 itself is unified so that a clear boundary does not appear between the operation portion 54 and the support portion 55. An example of manufacturing the operation rod 5 when formed is shown. In this example, if the portion located beside the loading platform 7 is the operating portion 54, in the example of FIG. 5, the operating portion 54 is convexly curved toward the opposite side of the covering sheet 2. By bending the operating portion 54 to the opposite side of the covering sheet 2, the weight of the operating rod 5 when the operating rod 5 is in use and the covering sheet when the supporting portion 55 (suspends) supports the covering sheet 2. It is possible to reduce the moment acting on the lower end portion of the operating portion 54 due to the load of 2. Similar advantages can be obtained by changing a part of the cross section, such as increasing the cross section of a part of the operation unit 54 and reducing the cross section of a part of the support part 55, even though they are continuous. ..

6- (a) to 6 (c) show the load as the operator on one side or both sides of the vehicle 6 in the width direction moves from the rear side to the front side of the vehicle 6 while holding the operation rod 5. The procedure of the work of laying the covering sheet 2 on it is shown. (A) shows a situation in which the rear ring roads 4 and 4 connected to the rear side of the covering sheet 2 are connected to the rear side of the vehicle 6 or the loading platform 7, but the vehicle of the rear ring road 4 is connected. The connection to the 6th and the like may be after the connection of the front annular member 3 of the covering sheet 2 to the vehicle 6 and the like is completed. In FIGS. 6 to 8, reference numeral 71 indicates a side tilt, and 72 indicates a rear tilt.

FIG. 6- (b) shows the operation rod 5 holding the front annular member 3 and 3 connected to the front end of the covering sheet 2 on the rear side of the loading platform 7 or the intermediate portion in the length direction of the loading platform 7. It shows the situation of moving from to the front side. In (c), the movement of the operating rod 5 to the front side is completed, the front annular member 3 is separated from the holding portion 53 of the operating rod 5, and the front annular member 3 is moved to the loading platform step 73 of the vehicle 6 or its vicinity. Shows the situation when connected to.

In FIG. 7- (a) (reference example) , the operating rods 5 and 5 (front side annular) are applied to the covering sheet 2 in the width direction by using two operating rods 5 and 5 from both sides in the width direction of the vehicle. The situation shown in FIG. 6- (b) in which the materials 3 and 3) are moved to the front side of the vehicle is shown when viewed from the rear side of the vehicle 6. FIG. 7- (b) shows an enlarged portion of the broken line circle portion of (a). (C) shows the situation shown in FIG. 6- (c) in which the connection of the front ring roads 3 and 3 to the vehicle 6 front side is completed, and the connection of the rear ring roads 4 and 4 to the vehicle 6 is also completed. ing. FIGS. 8- (a) and (b) (reference example) show the situation of FIGS. 7- (a) and (c) in a little more detail.

1 …… Curing tool,
2 ... Cover sheet, 21 ... Ring, 22 ... Hook, 23 ... String, 2A ... Adjustment section, 2b ... Insertion hole,
3 …… Front ring material,
4 …… Rear ring material,
5 ... Operation rod, 50 ... Upper end, 51 ... Main body, 52 ... Horizontal axis, 53 ... Holding part, 54 ... Operation part, 55 ... Support part,
6 ... transport vehicle, 7 ... loading platform, 71 ... side tilt, 72 ... rear tilting, 73 ... loading platform step.

Claims (3)

The front section located on the front side of the transport vehicle when the load loaded on the carrier of the carrier is covered from above and laid on the load in the length direction, and the rear of the carrier. A cover sheet distinguished from a rear section located on the side and both sides in the width direction of the front section of the cover sheet are held and operated on the ground to lay the cover sheet on the load. Equipped with one operating rod to be
A tension-bearing front annular member and a rear annular member connected to the transport vehicle are connected to both sides of the covering sheet in the width direction of the front section and both sides of the rear section in the width direction. Being done
The operating rod projects from only one operating unit to be operated and the upper end of the operating unit in a direction intersecting the axial direction of the operating unit, and is located above the uppermost portion of the load, and is the covering sheet. Has two parts of the support part to support
Holding portions for holding the front annular member of the covering sheet are provided at least at two positions corresponding to both sides of the covering sheet in the width direction of the supporting portion .
Curing of a vehicle load, characterized in that the operating portion and the supporting portion are continuous, the operating rod has a unified shape, and the operating portion is convexly curved toward the opposite side of the covering sheet. Tools. The rear annular material is connected to a position closer to the front than the rear end of the covering sheet, and the section from the connection point of the rear annular material to the covering sheet to the rear end of the covering sheet is the transport vehicle. It is an adjustment section for adjusting the length covering the loading platform, and an insertion hole for inserting a string for bundling the adjustment section when the adjustment section is not used is inserted at least on both sides in the width direction of the adjustment section. The curing tool for a vehicle load according to claim 1 , wherein the vehicle load is formed. The method for using the curing tool according to claim 1 or 2 , wherein the covering sheet is laid on a load loaded on the loading platform of the transport vehicle using the operation rod.
A step of holding each front annular member in the holding portion of the operating rod, and
While the rear side of the covering sheet is arranged on the rear side or the lower side of the loading platform, the operation rod is moved from any part of at least one side of the loading platform to the front side of the loading platform. Process and
After the front side of the covering sheet moved to the front side of the loading platform, the covering sheet was loaded on the loading platform through a step of connecting the front side annular member and the rear side annular member to the transport vehicle. How to use the curing tool, which is characterized by being laid on a load.

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