JPH078066U - Castor stopper device - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to prevent the accident of the trolley or cargo with casters falling from the pallet of the lorry, and between the pallet and the lifting platform of the pallet by linking with the movement of the pallet. Make it possible to smoothly transfer trucks and cargo. A recess 4 is formed on a floor surface 6 of a cargo bed, and a gentle slope A is formed at a position closer to the edge of the cargo bed of the recess 4, and a stopper surface B is formed at an acute angle to the gentle slope A. The stopper member 10 having the above is pivotally attached, and the stopper member 10 is biased by a spring in a direction projecting from the floor surface of the cargo bed, and the lifting platform 39 of the cargo handling work machine 30 including the lifting platform 39 is mounted on the cargo floor surface. 6 and an interlocking mechanism for rotating the stopper member 10 to the retracted state when the stopper member 10 is raised to substantially the same height.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a caster stopper device installed on the cargo bed side of a freight vehicle, and more particularly to a caster stop device that interlocks with the operation of a cargo handling machine mounted on the rear part of a freight vehicle.

[0002]

[Prior art]

 Recently, a cargo handling machine equipped with an elevating platform has been installed in the rear part of a freight vehicle, etc., and the elevating operation from the landing position of the elevating platform to the platform height has been used to efficiently load and unload cargo. . Further, it has been conventionally proposed to provide a caster stopper on the lifting platform side for the purpose of preventing a dolly or cargo with casters from falling from the lifting platform.

[0003]

[Problems to be solved by the device]

 By the way, when loading and unloading a truck or cargo with casters using the lifting platform of a cargo handling machine on a sloping ground where the rear side of a lorry is lowered, the lifting platform rises from the lowered position to the same height as the loading platform. In the meantime, there was an accident in which a truck or cargo with casters fell from the rear end of the truck carrier. This is because, in the past, no drop prevention measures were taken on the cargo bed side of a truck.

In view of the above points, the present invention can prevent the accident of falling of a dolly or cargo with casters from a cargo bed of a freight vehicle, and further elevates the cargo bed and the cargo work machine by interlocking with the movement of the cargo work machine. It is an object of the present invention to provide a caster stopper device capable of smoothly transferring a dolly and cargo to and from a platform.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the caster stopper device of the present invention has a concave portion formed on the floor surface of the loading platform, and has a gentle slope (A) which is lowered toward the loading platform edge at a position near the loading platform edge of the recess. A stopper member having a stopper surface (B) that is perpendicular or acute to the gentle slope (A) is pivotally mounted, and the stopper member is urged by a spring in a direction in which it projects from the floor surface of the cargo bed, and ascends and descends. The cargo handling machine having a platform is provided with an interlocking mechanism for rotating the stopper member into a retracted state when the lifting platform is raised to substantially the same height as the floor surface of the cargo bed.

[0006]

[Action]

 In the caster stopper device of the present invention, the stopper member attached to the loading platform is projected from the loading platform floor by the spring when the lifting platform of the loading / unloading machine is landing or being raised. Then, the stopper surface of the stopper member protruding from the floor surface of the loading platform rises in a state of being almost vertical to the floor surface of the loading platform, and the carriage or cargo with casters that goes from the inside of the loading platform to the edge of the loading platform stops at the stopper surface. Even if the rear part of the loading platform is lowered (for example, on a sloping ground where the rear part is lowered), there will be no accidental fall of the truck or cargo with casters.

Further, when the lifting platform of the cargo handling machine reaches the upper limit position and rises to almost the same height as the floor surface of the loading platform, the stopper member is pulled into the retracted state via the interlocking mechanism, so that It is possible to smoothly perform the movement of the truck or the cargo with casters on the lifting platform or from the lifting platform to the loading platform.

[0008]

【Example】

 An embodiment of a caster stopper device according to the present invention will be described below with reference to the drawings.

1 to 4, reference numeral 1 is a chassis of a freight vehicle, 2 is a cargo bed fixed on the chassis, a floor plate 3 near the edge of the cargo bed is cut off, and a recess 4 for storing a stopper member is provided therein. The formed storage frame 5 is provided. One end of the storage frame 5 is connected and fixed to the floor plate 3 that constitutes the floor surface 6 of the cargo bed, and the other end of the storage frame 5 is connected and fixed to the end frame 7 that constitutes the end portion of the cargo bed 2. A stopper member 10 having a substantially L-shaped cross section is pivotally mounted on a bottom portion 12 of the inner surface of the recess 4 via a hinge 11 along a long side 4A on the floor edge side of the recess 4 for storing the stopper member. Here, the stopper member 10 having a substantially L-shaped cross section has a gentle slope A that is lowered toward the edge of the cargo bed in the projecting state of FIG. 3, and a stopper face B that is perpendicular to the gentle slope A or forms an acute angle. The coil spring 28 of FIG. 2 pivotally mounted on the lower end of the gentle slope A on the side of the storage frame 5 via the hinge 11 and provided coaxially with the hinge 11 in the protruding direction (right in FIGS. 1 to 3). It is urged in the direction of rotation. A rod mounting bracket 13 is fixed to the back surface of the gentle slope A, and one end of a rod 14 is pivotally attached to the bracket 13 by a pin 15. A support side bracket 21 is fixed to the side surface portion 20 of the storage frame 5 which is bent vertically along the long side 4B on the floor surface inner side of the recess 4. A pin 23 integral with a support block 22 is fitted to the support-side bracket 21, so that the support block 22 is pivotally supported by the bracket 21. The rod 14 is slidably (movably) passed through the supporting block 22. A pull-out prevention nut 25 is fixed to the male screw engraved at the end of the rod 14. Notches 26 and 27 are formed in the stopper member 10 and the storage frame 5 in order to avoid the rod 14.

Furthermore, as an interlocking mechanism for interlocking the stopper member 10 with the movement of the cargo handling machine 30 mounted on the rear portion of the freight vehicle, an arm 40 fixed to the back side of the gentle slope A of the stopper member 10, A slide rod 42 connected (pivotally attached) to a tip portion of the arm 40 by a pin 41, a support block 43 for slidably supporting the slide rod 42, and a support block 43 pivotally supported by a pin 45. Bracket 44 is installed. Here, the bracket 44 is fixed inside the end frame 7 that constitutes the end of the luggage carrier 2. The slide rod 42 penetrates the support block 43 slidably, and a roller 46 is pivotally attached to the lower end of the slide rod 42. The storage frame 5 is formed with a notch 47 for avoiding the arm 40.

As shown in FIG. 4, a lock member 50 is pivotally attached to the floor surface side near both ends of the storage frame 5, and when the caster stopper device is not used, the stopper member 10 is pushed down. Lock it (at the same height as the floor).

The loading / unloading work machine 30 includes a mounting frame 31 fixed to the chassis 1 of a freight vehicle, and a main arm 33 having one end attached to a rotary shaft 32 rotatably driven by a hydraulic cylinder or the like in the mounting frame 31. A sub arm 34 whose one end is pivotally attached to the mounting frame 31 by a pin 34A, and a vertical link body 35 which is pivotally attached to the other ends of the main arm 33 and the sub arm 34 forming a parallel link by pins 36 and 37, It is provided with a lifting platform 39 having a bracket 38 connected (pivotally attached) to the sub arm 34 and the vertical link body 35 by a pin 36 integrated with the rear end surface. In the cargo handling machine 30, the main arm 33 rotates in accordance with the rotation of the rotary shaft 32, and the sub arm 34 rotates in parallel with the rotation of the rotary shaft 32, so that the vertical link body 35 is vertically moved while maintaining the vertical state. As a result, the lifting platform 39, whose rear end face is in contact with the vertical link body 35, is lifted while maintaining a horizontal state. Then, the sub arm 34 abuts on the roller 46 at the lower end of the slide rod 42 and pushes it up when the elevating platform 39 approaches the upper limit position. As shown in FIG. 3, a sub-arm cushioning stopper 48 is fixed to the lower portion of the end frame 7 that constitutes the end of the luggage carrier 2.

In the configuration of the above embodiment, when the lifting platform 39 of the cargo handling machine 30 is landing or in the middle of rising, the sub-arm 34 of the cargo handling machine 30 and the roller 46 of the interlocking mechanism are separated from each other, and The member 10 is biased in the protruding direction by the coil spring 28. Therefore, the stopper surface B of the stopper member 10 rises substantially vertically from the floor surface 6 of the loading platform and projects therefrom, so that the wheels (casters) 60 of the truck shown by the phantom line in FIG. 1 can be stopped. As a result, it is possible to prevent a dolly or a cargo with casters from falling from the bed 2.

When the elevating platform 39 approaches the upper limit position, the upper part of the sub arm 34 comes into contact with the roller 46 of the slide rod 42, and when the elevating platform 39 reaches the upper limit position, that is, When it becomes the same height as the floor surface 6 of the loading platform, the roller 46 of the slide rod 42 is pushed up, and the stopper member 10 is rotated counterclockwise in FIG. 1 to store the stopper member 10 in the storage frame 5. It is pulled into the recess 4. As a result, the gentle slope A of the stopper member 10 is at the same height as the floor surface 6 of the loading platform, and the transportation of the dolly or the cargo with the casters from the loading platform to the lifting platform 39 and vice versa. Can be done smoothly.

In the loading / unloading machine, the lifting platform is driven up and down by the parallel link. However, even when the lifting platform is driven up and down by the vertical guide, the lower end of the slide rod 42 is moved by the member interlocking with the lifting of the lifting platform. The stopper member 10 can be actuated in the same manner by pushing up the roller 46 of FIG.

[0016]

[Effect of device]

 As described above, according to the caster stopper device according to the present invention, the stopper member provided on the cargo bed side can be brought into the projecting or retracting state in association with the lifting operation of the lifting platform of the cargo handling machine. By automatically projecting the stopper member from the floor surface of the platform when the platform is landing or climbing, it is possible to prevent the cargo with the casters and casters from falling from the platform. Further, since the stopper member is automatically projected and stored, it is not necessary for the cargo worker to pay special attention to the operation of the stopper member.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an overall configuration of an embodiment of a caster stopper device according to the present invention.

FIG. 2 is a side sectional view showing a stopper member and a mechanism portion for projecting the stopper member in the embodiment.

FIG. 3 is a side sectional view showing an interlocking mechanism portion for interlocking the stopper member with the cargo handling machine in the embodiment.

FIG. 4 is a plan view showing a mechanism portion for locking the stopper member when not in use in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 chassis 2 bed 3 floor board 4 recess for storing stopper member 5 storage frame 6 floor surface 10 stopper member 11 hinge 28 coil spring 30 cargo handling machine 33 main arm 34 sub arm 39 lifting platform 40 arm 42 slide rod 46 roller

Claims (1)

[Scope of utility model registration request] 1. A concave portion is formed on a floor surface of a cargo bed, and a gentle slope (A) lowering toward the cargo bed edge and a vertical or acute angle with respect to the gentle slope surface (A) are formed at a position near the cargo bed end edge of the concave portion. A stopper member having a stopper surface (B) is pivotally attached, and the stopper member is biased by a spring in a direction projecting from the floor surface of the cargo bed, and the lifting platform of the cargo handling machine having the lifting platform is mounted on the cargo bed. A caster stopper device, comprising: an interlocking mechanism for rotating the stopper member to a retracted state when the stopper member is raised to substantially the same height as the floor surface.