Anti-skid device of mounted object for forklift

Abstract

To provide an anti-skid device of mounted objects for a forklift capable of surely preventing objects mounted on the forks of a forklift from slipping down from the forks.SOLUTION: An anti-skid device of mounted objects for a forklift comprises a body part 10 attached to the claw part 1a of a forklift, an anti-skid means 20 provided in the body part 10, and a fixing part 30 to fix the body part 10 to the claw 1a. The body part comprises a pair of side wall parts 11,12 positioning it outside of each of both sides of the claw part and an upper horizontal part 13 hung horizontally on the upper side of both side wall parts. The anti-skid means 20 comprises a first swinging member 21 pivotally supported by at least one of the side wall part of the body part and a second swinging member 22 pivotally supported by the front end side of the first swinging member. It is configured that a first abutting part 23 capable of abutting against the rear surface of the mounting object on the claw part above the rear end side is provided in the first swinging member and a second abutting part 22c capable of abutting against the rear surface of the mounting object on the claw part is provided in the second swinging member.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an anti-slip device for items placed on a forklift, which prevents items placed on the forks of the forklift from slipping off the forks. [Background technology]

[0002] Forklifts are used to transport cargo and other items placed on a pair of forks on the front of the vehicle. While some forklifts transport cargo directly onto the forks, more commonly, the cargo is placed on a loading device called a pallet and transported via the pallet. Specifically, the forks of the forklift are inserted into the space between the top and bottom of a pallet on which cargo and other items have already been placed, and the pallet is then loaded onto the forks. Once the pallet is transported to its destination, the pallet is then unloaded.

[0003] One problem that has been pointed out in forklift transportation is the possibility of cargo or other items sliding off the forks. Specifically, when the forklift is stopped, the pallet carrying the cargo slides forward off the forks, or when the forklift is turned, the pallet carrying the cargo slides sideways off the forks, resulting in the cargo falling. Such falling cargo or other items can be damaged by being slammed into the ground, resulting in significant losses. Furthermore, the sliding of the cargo or other items can shift the center of gravity of the forklift, which, in the worst case scenario, can cause the forklift to roll over.

[0004] As a means to prevent the above problems from occurring, for example, Patent Document 1 below discloses a technology in which an anti-slip material is applied to the upper surface of the forks of a forklift to form a coating film. Also, Patent Document 2 below discloses an anti-slip device for forks, which is configured to use a magnetic sheet with an anti-slip member made of polyether urethane rubber fixed to the upper surface of the magnetic sheet with an adhesive, and then magnetically attached to the upper surface of the fork of the forklift. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-182992 [Patent Document 2] Patent No. 5096604

[0006] In this regard, the technologies disclosed in Patent Documents 1 and 2 may indeed be said to be effective to a certain extent in increasing the frictional force generated between the forks of a forklift and the pallet, thereby preventing the risk of a loaded pallet slipping off the forks. However, the high frictional resistance generated between the forks and the pallet has the potential to actually reduce work efficiency. In other words, when using a pallet for transportation by forklift, it is absolutely necessary to insert and remove the forks of the forklift into and from the space under the pallet top. However, if the friction between the forks and the pallet is high, it becomes difficult to insert and remove them reliably. Summary of the Invention [Problem to be solved by the invention]

[0007] Therefore, in order to solve the above problems, the present invention aims to provide an anti-slip device for forklifts that prevents cargo placed directly on the forks of a forklift, or a pallet placed on the forks, from slipping off the forks, and also causes no inconvenience when inserting or removing the forks from the pallet. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides an anti-slip device for forklifts that prevents an object placed on the claws of the forks of a forklift from slipping off the forks, and the anti-slip device for forklifts includes a main body that is attached to the claws, an anti-slip means provided on the main body, and a fixing portion for fixing the main body to the claws, and the main body includes a pair of side walls that are located outward on both sides of the claws, and an upper cross-section that is cross-sectioned above the both side walls, and the anti-slip means includes a first swinging member that is pivotally supported on at least one of the side walls of the main body, and a second swinging member that is pivotally supported on the front end side of the first swinging member. and a second swinging member pivotally supported by the fork, wherein the first swinging member has a first abutment portion at an upper portion of its rear end that can abut against the rear surface of an object placed on the claws, and the second swinging member has a second abutment portion that can abut against the rear surface of an object placed on the claws, wherein at least a portion of the first abutment portion of the first swinging member is located above an upper end of a side wall of the main body in a normal state and the front side is tilted downward, and the second abutment portion of the second swinging member is located below an upper end of the side wall of the main body in a normal state, so that when an object is placed on the claws, the first abutment portion is pushed down and the second abutment portion applies a force pressing against the rear surface of the object from below. Note that "placing" as used herein means placing the object on the claws of the forks, but this refers not only to placing an object directly on the claws of the forks but also to placing a loading tool such as a pallet or a dolly on the claws of the forks.

[0009] In addition, in the anti-slip device for objects placed on a forklift according to the present invention, it is preferable to provide a rotation regulating section at the lower end of the side wall section on the side where the anti-slip means is provided, which regulates the rotation of the first oscillating member within a certain range.

[0010] Furthermore, in the anti-slip device for a forklift according to the present invention, if an elastic member having an anti-slip effect is provided on the upper surface of the second contact portion, an even more effective anti-slip effect can be obtained. [Effects of the Invention]

[0011] According to the present invention, it is possible to reliably prevent objects placed directly on the forks of a forklift or pallets placed on the forks from slipping off the forks, and also to easily insert and remove the forks from the pallet without unnecessary resistance. Furthermore, these effects can be achieved with a relatively simple structure, which in turn allows for cost reduction. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of a forklift anti-skid device for storing items. [Figure 2] FIG. 2 is a plan view showing the forklift anti-skid device for storing articles attached to the forks of the forklift. [Figure 3] FIG. 1 is a side view showing the forklift anti-slip device for storing articles attached to the forks of a forklift. [Figure 4] FIG. 10 is a side view showing the operation of the anti-skid device for forklifts. DETAILED DESCRIPTION OF THE INVENTION

[0013] An embodiment of the anti-skid device for forklift articles according to the present invention will now be described with reference to the drawings. Fig. 1 is a perspective view of the anti-skid device for forklift articles, Fig. 2 is a plan view showing the anti-skid device for forklift articles attached to the prongs of the forks of a forklift, and Fig. 3 is a side view showing the anti-skid device for forklift articles attached to the prongs of the forklift. The anti-skid device for forklift articles of this embodiment is generally composed of a main body 10 attached to the prongs 1a of the fork 1 of the forklift, an anti-skid means 20 provided on the main body 10, and a fixing part 30 for fixing the main body 10 to the prongs 1a. The aforementioned main body 10 comprises a pair of side wall portions 11, 12 and an upper cross portion 13 that is cross-mounted on the upper side of both side wall portions 11, 12, and the anti-slip means 20 comprises a first oscillating member 21 that is rotatably supported on the main body 10 and a second oscillating member 22 that is rotatably supported on the front end side of the first oscillating member 21.

[0014] The present invention is attached to a forklift and used thereon. The forklift is configured with a pair of forks 1, 1 that can be raised and lowered at the front of a vehicle unit equipped with wheels, and the forks 1, 1 of the forklift are L-shaped in a side view, with claws 1a, 1a extending forward and standing portions 1b, 1b standing upward from the rear ends of the claws 1a, 1a. The anti-skid device for a forklift object according to the present invention is attached to the claws 1a of the fork 1 before use. While it is preferable to attach the present invention to both of the pair of forks 1, 1 of the forklift, it may also be attached to only one of the forks 1, 1 for use.

[0015] The main body 10 is composed of an outer wall panel 11 and an inner wall panel 12, which serve as a pair of left and right side walls spaced a predetermined distance apart, and an upper panel 13, which serves as an upper cross section and is provided to span the upper ends of the side wall panels 11, 12. Specifically, the outer wall panel 11 and the inner wall panel 12 are both made of horizontally elongated rectangular flat plates of the same size, and their width (height) dimensions are set slightly larger than the thickness of each prong 1a of the fork 1, which is 40 mm in this embodiment. Furthermore, the longitudinal (front-to-back) lengths of the outer wall panel 11 and the inner wall panel 12 are 215 mm in this embodiment. Furthermore, the distance (internal dimension) between the outer wall panel 11 and the inner wall panel 12 is set slightly larger than the width (external dimension) of each prong 1a of the fork 1, which is 110 mm in this embodiment. Because the distance between the outer and inner wall panels 11 and 12 is set larger than the widthwise outer dimension of each prong 1a of the fork 1, when the forklift anti-skid device for storing articles is attached to the fork 1 of the forklift, each of the side wall panels 11 and 12 is positioned outward of both sides of the prong 1a of the fork 1. The inner wall panel 12, one of the side wall panels 11 and 12, has a rotation restricting member at its lower end, i.e., a narrow, plate-like rotation restricting piece 14 extending outward at a right angle in this embodiment. This rotation restricting piece 14 serves to restrict the rotation of the anti-skid means 20 (described later) within a certain range. Furthermore, screw holes are drilled at the upper rear ends of each of the outer and inner wall panels 11 and 12 for screwing in the fixing member 30 (described later). Furthermore, a screw hole is drilled at the upper rear end of the inner wall panel 12, slightly rearward of the center in the fore-aft direction, for pivotally supporting a first swinging member 21 of the anti-skid means 20 (described later). On the other hand, the top plate 13 is made of a rectangular flat plate material, and its length in the front-to-rear direction is set to be shorter than the length of each of the side wall plates in the front-to-rear direction. Specifically, the length of the top plate 13 in the front-to-rear direction is set to be slightly shorter than half the length of each of the side wall plates 11, 12. Therefore, the upper rear half between the side wall plates 11, 12 is covered by the top plate 13, but the upper front half between the side wall plates 11, 12 is open. Note that the specific numerical values ​​for the length of the main body 10 described above are merely examples, and these lengths can be set freely.

[0016] The anti-slip means 20 is composed of a first swinging member 21 rotatably supported on the inner wall plate 12, a pedal portion 23 provided at the upper end of the rear end of the first swinging member 21, and a stopper portion 22 serving as a second swinging member rotatably supported on the front end of the first swinging member 21. Of these, the first swinging member 21 is made of a horizontally elongated rectangular flat plate material, and is attached to the inner wall plate 12 so as to rotate (swing) like a seesaw by providing a first rotating shaft 24 at the center of the first swinging member 21. The first movable shaft 24 is supported slightly rearward of the center of the first swinging member 22 in the front-to-rear direction. The pedal portion 23 is made of a rectangular flat plate formed by bending the upper end of the rear end of the first swinging member 21 at a right angle, and its length in the front-to-rear direction is set to the length from the rear end of the swinging member 21 to just before the first rotating shaft 24. On the other hand, the stopper portion 22 is composed of a pressure plate 22a made of a horizontally elongated rectangular flat plate material, a pivot support piece 22b made of a substantially square flat plate formed by bending the center of one widthwise end of the pressure plate 22a at a right angle, and an anti-slip plate 22c attached to the upper surface of the pressure plate 22a. The anti-slip plate 22c is a flat elastic member having substantially the same size as the pressure plate 22a and a predetermined thickness; in this embodiment, it is made of a rubber plate material. A second pivot shaft 25 is provided at the center of the pivot support piece 22b of the stopper portion 22 to pivotally support the stopper portion 22 on the first pivot member 21, allowing the stopper portion 22 to freely pivot (swing) relative to the first pivot member 21. In this embodiment, the anti-slip plate 22c is provided on the upper surface of the pressure plate 22a to increase the frictional resistance between the placed object and the fork 1, but the anti-slip plate is not necessarily required. That is, although there are advantages to providing an anti-slip plate, the object of the present invention can be achieved even if an anti-slip plate is not provided. Furthermore, if an anti-slip plate is not provided, an anti-slip agent may be applied to the upper surface of the pressure plate. Furthermore, in the above embodiment, an example was shown in which the anti-slip plate was made of a rubber plate, but the anti-slip plate can also be made of a different material. Furthermore, in the above embodiment, an example was shown in which the pedal portion 23 was made of a rectangular flat plate formed by bending the upper end of the rear end of the first swinging member 21 at a right angle, but this is not limited to this.For example, the upper end of the rear end of the first swinging member 21 can be used as a pedal portion as it is.

[0017] The fixing portion 30 is made of a narrow, plate-like member and is formed in a U-shape in a plan view. Specifically, it is formed in a U-shape so as to tightly surround both sides and the rear of the upright portion 1b of the fork 1. Furthermore, each end of the fixing portion 30 is provided with a screw hole for installation. Note that the fixing portion 30 in this embodiment is merely an example, and various configurations are possible as long as the main body 10 of the forklift anti-skid device for storing articles can be fixed to the prongs 1a of the fork 1. For example, the fixing portion may be formed to surround the prongs 1a of the fork 1, thereby fixing the main body 10. Furthermore, other means, such as directly screwing the main body 10 to the prongs 1a of the fork 1, may also be used as the fixing portion. In short, the fixing portion of the present invention is sufficient as long as it is configured to fix the main body 10 to the prongs 1a of the fork 1.

[0018] Next, the procedure for attaching the anti-skid device for forklifts to the forks 1 according to this embodiment will be described. Before attaching the anti-skid device for forklifts to the forks 1, the fixing members 30 are removed. Then, the anti-skid device for forklifts from which the fixing members 30 have been removed is placed on the base end (rear end) of the prongs 1a of the forks 1 of the forklift. At this time, the top plate 13 of the main body 10 is placed facing up, and the anti-skid means 20 is positioned inside the prongs 1a of the forks 1 (the lower side in FIG. 2). When placed in this manner, the outer and inner wall plates 11 and 12 of the main body 10 are positioned outside the respective sides of the prongs 1a of the forks 1, and the top plate 13 of the main body 10 is supported on the top surfaces of the prongs 1a of the forks 1. Next, the fixed part 30 is fitted onto the upright part 1b of the fork 1 so as to surround it from the rear, and then the mounting screw holes at the left and right ends of the fixed part 30 are matched with the screw holes at the top of the rear ends of the outer wall plate 11 and the inner wall plate 12 of the main body 10, and they are fastened with bolts or the like. In this way, the anti-slip device for loads on a forklift is attached to one fork 1. Next, the other anti-slip device for loads on a forklift is attached to the other fork 1 using the same procedure.

[0019] Next, the operation of the anti-skid device for forklift objects attached to the forks will be described. When transporting a load using a forklift, the load may be placed directly on the prongs 1a, 1a of the forks 1, 1. However, in most cases, the load is transported via a pallet P. Therefore, the following description will be given assuming the use of a pallet P. When a pallet P with a load already placed on it is transported by the forklift, the tips of the prongs 1a, 1a of the forks 1, 1 are inserted into the space 42 between the top plate 40 and bottom plate 41 of the pallet P, and the forklift is then moved forward until the rear end of the pallet P reaches the rear ends of the prongs 1a, 1a. This sets the pallet P with the load placed on it in a set position on the forklift. At this time, the anti-skid device for forklift objects operates as follows. That is, as shown in FIGS. 4(a) to 4(c), when the prongs 1a of the fork 1 are inserted into the space 42 of the pallet P, the pallet P moves toward the rear ends of the prongs 1a of the fork 1. In the normal state of the anti-slip means 20, as shown in FIG. 4(a), the pedal portion 23 of the first swinging member 21 is positioned above the upper ends of the prongs 1a of the fork 1, and the stopper portion 22 is positioned below the upper ends of the prongs 1a of the fork 1. That is, at this time, the first swinging member 21 of the anti-slip means 20 is in a state in which its front end is tilted downward and its rear end is tilted upward. This is because the first pivot shaft 24 of the first swinging member 21 is located slightly rearward of the center of the first swinging member 21 in the fore-and-aft direction, and the stopper portion 22 is provided at the front end of the first swinging member 21, so that the weight of the stopper portion 22 presses down on the front end of the first swinging member 21. The pressed-down front end of the first swinging member 21 then abuts against the rotation-restricting piece 14 of the inner wall panel 12, restricting its rotation within a certain range. As a result, the pedal portion 23 provided at the upper end of the rear end of the first swinging member 21 is positioned above the inner wall plate 12, in other words, above the claws 1a of the forks 1. Then, as the pallet P moves rearward on the claws 1a of the forks 1, as shown in Figure 4(b), the underside of the top plate 40 of the pallet P comes into contact with the pedal portion 23 of the first swinging member 21 and lifts it up, while simultaneously pushing the pedal portion 23 downward.Additionally, in response to this, the first swinging member 21 rotates (swings) like a seesaw, and the front end of the first swinging member 21 rises. Finally, when the underside of the top plate 40 of the pallet P is completely placed on the pedal portion 23, as shown in Figure 4(c), the stopper portion 22 provided at the front end of the first swinging member 21 applies a force as indicated by the arrow to the underside of the top plate 40 of the pallet P, thereby pressing the pallet P from below with a strong force. This eliminates the inconvenience of the pallet P slipping off the forks 1, 1 of the forklift when an unexpected force is generated while the pallet P carrying a load is being transported by a forklift.

[0020] In the above embodiment, an example in which the anti-slip means is provided only on the inner wall panel, which is one of the pair of left and right side walls, has been shown, but it is also possible to provide the anti-slip means only on the outer wall panel. It is also possible to provide the anti-slip means on both the outer and inner wall panels, rather than just on one side. In the above embodiment, an example in which a rectangular upper plate is provided as an example of the upper cross member of the main body, but this is not limited to this. It can also be formed from a narrow plate or rod-shaped as long as it can support the main body on the tines of a fork. It is also possible to form the main body using multiple narrow plate members or rod-shaped members. Furthermore, a cross member can also be provided on the lower side, giving the main body a square cross section. [Explanation of symbols]

[0021] 1 fork 1a Claw part 10 Main body 11 Outer wall panel (side wall) 12 Inner wall panel (side wall) 13 Upper plate (upper cross section) 14 Rotation restriction piece (rotation restriction portion) 20 Anti-slip means 21 First swinging member 22 stopper portion (second swinging member) 22a Pressure plate (second contact part) 23 Pedal part (first contact part) 30 Fixed part

Claims

1. A forklift anti-slip device for items placed on the fork of a forklift to prevent the items from slipping off the fork, The anti-skid device for a forklift load is a main body portion to be attached to the claw portion, an anti-slip means provided on the main body portion, and a fixing portion for fixing the main body portion to the claw portion, The main body includes a pair of side wall portions positioned outwardly of both side portions of the claw portion, and an upper horizontal bridge portion that is horizontally bridged above the both side wall portions, the anti-slip means includes a first swinging member rotatably supported on at least one side wall of the main body, and a second swinging member rotatably supported on a front end side of the first swinging member, The first swinging member is provided with a first contact portion at an upper portion of its rear end side that can contact the rear surface of the object placed on the claw portion, and the second swinging member is provided with a second contact portion that can contact the rear surface of the object placed on the claw portion, the first contact portion of the first swinging member is positioned such that at least a portion thereof is located above an upper end of a side wall portion of the main body portion in a normal state, and the second contact portion of the second swinging member is positioned such that at least a portion thereof is located below an upper end of a side wall portion of the main body portion in a normal state, When an object is placed on the claw portion, the first abutment portion is pushed down and the second abutment portion applies a pressing force from below to the underside of the object.

2. 2. The anti-skid device for a forklift according to claim 1, further comprising a rotation restricting portion provided at the lower end of the side wall portion on the side where the anti-skid means is provided, for restricting the rotation of the first swinging member within a certain range.

3. 3. The anti-slip device for a load on a forklift according to claim 1, wherein an elastic member having an anti-slip effect is provided on an upper surface of the second contact portion.

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