JPH036635Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a carton clamping device, which is one of the attachments for a forklift, and particularly relates to adjusting the amount of the lower bulge of the clamp pad.

[Conventional technology]

There are various carton clamping devices for forklifts according to the prior art, and their typical configurations are as shown in FIGS. 5 and 6.

FIG. 5 shows the overall structure of the forklift 1, in which the carton clamp device 10, like other ordinary attachments, is attached to a lift bracket 3 that moves up and down guided by a mast 2 at the front of the vehicle body.
Fixed.

As clearly shown in FIG. 6, the carton clamp device 10 has a hydraulic cylinder 1 mounted on a clamp rail 11 that is detachably fixed to a lift bracket 2.
2, a pair of left and right clamp arms 13 are attached so that the left and right spacing can be adjusted. A boss 14 is provided substantially vertically at the front end of the clamp arm 13, and a cylindrical member 15 is coaxially and rotatably coupled to each of the upper and lower ends of the boss 14 by a pin 16. A clamp pad 17 is attached to a bracket 19 fixed to the cylindrical member 15 by a bolt 18, and works together with the opposing clamp pad 17 to clamp a load.

In the carton clamp device 10 having such a configuration, in order to securely clamp the load, the left and right clamp pads 17 are generally shaped such that the upper part of the clamp pads 17 have a wider interval and the lower part has a narrower interval and are constricted at the bottom. There is, and its size is called the lower bud amount.
When the carton clamping device 10 is used for a long period of time, the amount of the lower bud will increase when the clamp arm 13
The value may differ from the value set at the time of manufacture due to distortion of the bracket 17, etc., and may even cause problems in cargo handling operations. Further, depending on usage needs, it may be necessary to change the initial amount of lower buds.

Therefore, in order to correct or change the amount of the lower bud, the bolt 18 is removed, the bracket 19 and the clamp pad 17 are separated, and the lower bracket 19 and the clamp pad 1 are separated as shown in FIG.
A method has been considered in which a sandwiching member 30 is placed between the bracket 19 and the clamp pad 17 and the two are fastened again using the bolt 18, but as can be seen from this drawing, a gap is created between the bracket 19 and the clamp pad 17. However, if these are tightened with the bolts 18, the clamp pads 17 will be bent, so this method is not used in practice.

[Problem that the invention attempts to solve]

As described above, the conventional technology has a problem in that it is not possible to adjust the amount of the lower bulge of the clamp pad. This invention aims to solve these problems.

[Means for solving problems]

In this invention, cylindrical members are coaxially and rotatably connected to the upper and lower ends of a boss provided almost perpendicularly to the front end of the clamp arm by pins, and a bracket is attached to each cylindrical member. In the carton clamping device, the bracket is attached to the cylindrical member so as to swing about an axis perpendicular to the axis of the cylindrical member, and the clamp pad narrows downwardly. As such, it is characterized in that it is removably fixed to at least the lower bracket via a sandwiching member.

[Effect]

In the above-mentioned carton clamping device of this invention, it is possible to make the bracket and the clamp pad parallel even if the clamp pad is tilted, so a sandwiching material is inserted between the bracket and the clamp pad to freely adjust the amount of lower bulge. I can do it.

[Embodiment] Hereinafter, a preferred embodiment of the forklift carton clamp device according to the invention will be described in detail with reference to the drawings.

Note that the same or equivalent parts as in the conventional configuration will be described using the same reference numerals.

The carton clamping device 20 according to this invention shown in FIG. 1 has a clamp rail 11 that is removably fixed to a lift bracket on the forklift vehicle body side, and a pair of left and right clamp arms 13 whose spacing is adjusted as in the conventional case. A cylindrical member 21 is rotatably connected to the upper and lower ends of a boss 14 provided at the front end of each clamp arm 13 by a pin 16.

As clearly shown in FIGS. 2 and 3, the cylindrical member 21 is formed with a pair of arms 22 extending from its sides in opposite directions, and the axis of the arms 22 is aligned with the axis of the cylindrical member 21. It is perpendicular to the A hole in a mounting plate 24 is fitted into a connecting pin 23 at the tip of each arm 22, and the mounting plate 24 is fixed to a bracket 26 by a rib 25. Therefore, the bracket 26 is adapted to swing around the two axes of the connecting pin 23 and the cylindrical member 21.

Further, one clamp pad 17 is fixed to the upper and lower brackets 26 by bolts 18.

In the carton clamp device of this invention constructed as described above, when adjusting the lower depression amount of the clamp pad 17, first remove the bolt 18 to separate the clamp pad 17 from the lower bracket 26, and then remove the upper cylindrical member. The clamp pad 17 is tilted together with the upper bracket 26 about the connecting pin 23 of 21. Next, a sandwich member 30 of the required thickness is inserted between the lower bracket 26 and the clamp pad 17. At this time, the lower bracket 26 is attached to the connecting pin 2 of the cylindrical member 21.
3 and is parallel to the clamp pad 17. Finally, the clamp pad 17 and the bracket 26 are fastened together with the bolt 18 to complete the lower bud amount adjustment work (FIG. 4).

[Effect of idea]

The forklift carton clamping device according to this invention has the above-mentioned structure and function, so in order to adjust the amount of the lower bud, a sandwiching material is inserted between the lower bracket and the clamp pad and the bolts are tightened. Even if you do this, the bracket will swing and adjust to the clamp pad, so no undue stress will be applied to the clamp pad. Therefore, since the amount of bottom budding can be freely adjusted, the carton clamping device can be adapted to various usage needs, and by making appropriate adjustments, it is possible to always maintain a constant cargo handling performance. , etc.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view showing an embodiment of a carton clamp device according to this invention, FIG. 2 is a partial view showing in detail the relationship between the bracket and the cylindrical member in the carton clamp device of FIG. 1, and FIG. The figure is a cross-sectional view taken along the line A-A in Figure 2, and Figure 4 is a cross-sectional view along line A-A in Figure 2.
Fig. 5 is a side view of a forklift equipped with a conventional carton clamp device, and Fig. 6 is a conventional carton clamp. FIG. 7 is a perspective view showing the device, and FIG. 7 is a front view schematically showing the carton clamping device shown in FIG. 6 adjusting the amount of lower bud. In the diagram, 1: forklift, 2: mast, 3:
Lift bracket, 10, 20: Carton clamp device, 11: Clamp rail, 12: Hydraulic cylinder, 13: Clamp arm, 14: Boss, 1
5, 21: Cylindrical member, 16: Pin, 17: Clamp pad, 18: Bolt, 19, 26: Bracket, 22: Arm, 23: Connecting pin, 24: Mounting plate,
25: rib, 30: sandwiching material.

Claims (1)

[Scope of utility model registration request] Cylindrical members are coaxially and rotatably connected by pins to the upper and lower ends of a boss provided almost perpendicularly to the front end of the clamp arm, and the clamp pads are fixed to brackets attached to each cylindrical member. In the carton clamping device that is
The bracket is attached to the cylindrical member so as to pivot about an axis perpendicular to the axis of the cylindrical member, and a clamping member is attached to at least the lower bracket such that the clamp pad narrows downwardly. Forklift carton clamping device consisting of a forklift removably fixed via the