JPS6169698A - Fluid operating expansion mechanism - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, the baggage gripping device i is capable of gripping baggage by telescopically operating the frame and movable arm structure!
This fluid-operated telescoping mechanism is provided with, for example, a pair of gripping arm structures and is used in a lift truck that grips and transfers cargo.

A fluid-operated ram is provided with a pair of gripping arm structures and is capable of operating the lift trunk gripping arm structure for gripping and transferring cargo.
, and the fluid-operated ram is freely movable by pressure fluid, and the gripping arm structure is moved by its extension and contraction.The load gripping device has been conventionally known.

When the above-mentioned baggage gripping device grips the baggage, the pair of gripping arm structures sandwich the baggage from both sides. When handling paper rolls, the operator of the skift truck is required to hold the paper roll in a consistent manner so as not to damage the paper roll, which requires skill. If so, there is a risk of damaging both the paper roll being pinched and the surrounding paper rolls.

The present invention has been made to overcome the above-mentioned drawbacks,
The purpose of this invention is to provide a fluid-operated telescoping mechanism with a required amount of tolerance, that is, play, when the gripping arm structure grips a load, and its gist is as follows.
) (In a fluid-operated ram that operates on a fluid-operated ram, a frame connection section or a movable arm structure connection section is attached to each connection section of the 17-arm and movable arm structure that supports the fluid-operated ram). A rubber body that flexibly holds the iTI in the direction of expansion and contraction is interposed between the connecting portions of the fluid-operated ram connecting portion,
This comb body always holds the frame connecting portion or the movable arm structure connecting portion and the fluid-operated ram connecting portion at an intermediate position, and when the intermediate position moves in either of the directions of expansion and contraction of the fluid-operated ram. The fluid-operated telescopic mechanism is characterized in that the contraction has the effect of returning the frame connecting portion or the movable arm structure connecting portion and the fluid-operated ram to an intermediate position again.

2- The fluid-operated extension mechanism according to claim 1, wherein the connecting portion is a bottom clevis on the fluid-operated ram side or a bottom bracket I on the 7-rail side.

3. The fluid-operated telescoping mechanism according to claim 1, in which the connecting portion is a head clevis on the fluid-operated ram side or a head bracket on the movable arm structure side, and the fluid-operated telescoping mechanism according to claim 1 is capable of performing cargo gripping work by independently swinging the required amount. The purpose is to simplify and improve efficiency.

Hereinafter, the present invention will be described in detail with reference to illustrated embodiments.

FIG. 1 is a partially cutaway side view illustrating the fluid-operated telescoping mechanism (A) of the present invention. The fluid-operated ram (1) consists of a piston rod (2) and a cylinder (3), and is provided with hoses (4) and (5) for supplying or discharging pressure fluid. The hose (4) is connected to the right end of the cylinder (3) in the figure, and the hose (5) is connected to the left end of the cylinder (3) in the figure via a pipe (6), and pressure fluid is supplied from the hoses (41, (5)). The piston rod (2) is freely retracted by 1 degree by discharging the piston rod (2), and this mechanism has been well known.Generally, the fluid-operated ram (1) is connected to the cylinder (3).
The end or bottom clevis <7) is connected to the frame side, the piston rod (2), and the end or head clevis (8) is connected, for example, to the navel of the gripping arm structure to interlock the gripping arm structure.

In the present invention, a rubber body (9) is fitted into the head clevis (8), etc., and will be described in detail below.

Figure 2 shows the I-I in Figure 1 of the head clevis (8).
FIG. 3 is a sectional view taken along the line 1--2. The rubber body (9) fitted into the head clevis (8) always holds the head pin (10) connected to the gripping arm structure side connecting portion at an intermediate position as shown in the figure. The head pin (10) is connected to the head bracket of the gripping arm structure, and its swing due to external force is limited only to the direction in which the piston rod (2) expands and contracts. Play money (!1) r! The head pin swings regardless of the expansion and contraction of the fluid-operated ram (1).In other words, the gripping arm structure
) will swing by the amount of play (a) of the interlocking head clevis (8).

FIG. 4 is a side view showing an example of the rubber body (9), and FIG. 5 is a sectional view taken along the line II in FIG. 4.

The rubber body (9) is an annular body with a hole in its center, through which the head pin (10) passes and is held so as to surround it. The head pin holding portion (9a), which is the inner periphery of the rubber body (9), is formed so that the rubber width is gradually reduced from the outer periphery toward the center. In this way, if an external force is applied to either of the directions of expansion and contraction of the piston rod (2), the rubber body (9) will bend in either direction, and the holding part (
9a) has a thin rubber width, so it receives the above external force flexibly at first,
As the applied external force increases, the holding part (9a) becomes harder and has the effect of stopping the holding part.

It should be noted that the rubber body (9) may be flexible and hold the held pin (10) and swing within a required range, and the shape of the rubber body (9) is not limited. Also, as shown in Figure 6, a plurality of rubber bodies (9) may be fitted and inserted (the rubber bodies (9) may be appropriately determined depending on the weight of the cargo, the size of the fluid-operated ram (1), etc.). The number of gaps in the fit is also limited to λ].

Fig. 7 is an explanatory diagram of the main parts of the connecting part of the fluid operated ram (A) of the present invention. The hend bracket (11) on the side of the body (B) is connected by the rad pinot (10), which is formed by fitting the rubber body (9) j:e into the connecting part. ＼ Throat clevis (8) t Limited to the throat (O), other than that, grasping arm structure (B), ＼ノ), Frakent (11), fluid-operated ram (Ll cylinder (3)) Edge i core bottom clevis (7
) and E) on the frame (C) side.
1, etc.) Even if it is installed in a misaligned connection part, it will have the same effect. Furthermore, they may be installed at two, three, or all locations of each of the above-mentioned connecting portions, and the number of locations is not limited to one.

In addition, the head bracket (11) on the side of the gripping arm structure (B)
, (11) and the bottom bracket (1) on the frame (C) side.
2) and (12) are supported from both sides by the head pin (jO) and bottom pinot (J3), respectively, with the connection parts of the hendo clevis (8) and bottom clevis (7) on the fluid-operated ram (1) side. Therefore, a rubber body (9) must be inserted into each bracket.

FIG. 8 is an explanatory plan view of the baggage gripping device.
) and grips the paper roll (D) from both sides. Lift truck (not shown)
(Gripping arm structure (II) via rotating structure (E) to Cl
It consists of 7'Q arrangement. The rotating structure (E) has conventionally been widely used in this technical field, and the gripping arm structure (B)
'eIt is used to rotate. Grasping arm (B-1
) and (n 2) are facing each other, and the gripping arm (B-1
1, (B-2) approach each other in the direction indicated by the arrow A1
The pair of gripping arms are moved by at least one fluid-operated ram (11).In the figure, two fluid-operated rams (1a) move the pair of gripping arms. ), (1b) were shown.

1) As mentioned above, in the present invention, the fluid-operated ram (1a),
(Each connection part of Ibl, that is, the gripping arm structure (Bl side connection part, head clevis (8) or helad bracket (11), or frame (C) side connection part, bottom clevis (7) or bottom bracket (12 ) and insert the rubber body (9) into each part of the rubber body (9) as shown in Figure 2.
) if it is within the range of play (a), both gripping arms (B-])
, (B-2) swings arbitrarily when an external force is applied, and since there is a permissible range, the above-mentioned drawbacks can be overcome.

As can be seen from the above explanation, the fluid operated ram (1a), (
Ib) are fluid-operated rams (1a), (
] h) It is independent of the expansion and contraction of t: oscillation, that is, the flexible gol inserted into each continuous part has elasticity due to the resistance of the body (9), and its (Ill elasticity) is the size of the rubber body (9) or (
It is controlled by the size of the inner diameter of the connecting part to be inserted, etc., but it has elasticity within the allowable range of the control, for example, or when the gripping arms (B-1) and (B-2) hit an obstacle,
Even if an external force is applied, there is no effect on the inside of the fluid-operated ram (1), and there is no effect in either direction of expansion or contraction of the fluid-operated ram (1).
The rubber body (9) can be swung within the allowable range.
has the function of always returning to the intermediate position, so the connecting portion is always held at the intermediate position.

As described above, according to the fluid-operated telescopic mechanism of the present invention, at least one of the connection parts of the fluid-operated head and bottom clevis on the side, the bottom bracket on the frame side, and the head bracket on the gripping arm structure side. By inserting the rubber body, for example, when an operator of a baggage gripping device grips and transfers a paper roll with the gripping arm structure, he does not need the skilled technique or accuracy required in the past, and he can also accidentally damage the paper roll. Even if you hit your gripping arm against an obstacle such as, there will be no effect because you can move the amount of play in either direction (Ffl ff1JJ) by the amount of play in either direction, and this IF tolerance will not be affected. The range of effects it brings include simplification of work, increase in work capacity, etc.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view for explaining the present invention, Fig. 2 is a sectional view taken along the line I-I in Fig. 1, Fig. 3 is a sectional view taken along the line ■-■ in Figure 1, and Fig. 4 5 is a side view of the rubber body, FIG. 5 is a sectional view taken along line I-1 in FIG. The explanatory diagram, FIG. 8, is a plan view of the luggage gripping device. In the figure, (A): Fluid-operated ram 6 mechanism (B): Grasping arm structure (C) = Frame (D): Paper roll (E) One-rotation structure (1) Two-fluid-operated ram (2): Piston rod (3): Cylinder (7): Bottom clevis (8): Head clevis (9): Rubber body (11): Head bracket (12): Bottom bracket!・Patent applicant Ryo Matsumoto Osamu Ariyoshi III Figure 7 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Scope of Claims] 1. In a fluid-operated ram that is telescopically operated by a fluid pumping device, each connection portion of the frame and movable arm structure that supports the fluid-operated ram is provided with a frame connection portion or a movable arm structure connection. A rubber body is interposed between the connecting portion of the frame connecting portion and the fluid-operated ram connecting portion to flexibly hold it in the expansion and contraction direction, and this rubber body is connected to the frame connecting portion or the movable arm structure connecting portion and the fluid-operating ram connecting portion. are always held at an intermediate position, and when the intermediate position moves in either of the expansion and contraction directions of the fluid-operated ram, it contracts, and the contraction occurs again when the frame connection part or the movable arm structure connection part and the fluid-operation ram 1. A fluid-operated telescoping mechanism characterized by having an action of returning the and to an intermediate position. 2. The fluid-operated telescopic mechanism according to claim 1, wherein the connecting portion is a bottom clevis on the fluid-operated ram side or a bottom bracket on the frame side. 3. The fluid-operated telescopic mechanism according to claim 1, wherein the connecting portion is a head clevis on the fluid-operated ram side or a head bracket on the movable arm structure side.