JPS636150Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cargo handling machine, and more particularly to a cargo handling machine configured to move a movable member relative to a base using a scissor-like link mechanism such as a table lift or pusher.

Such cargo handling machines are generally used to move cargo using a movable member such as a table, and are used in large numbers for a wide variety of applications. In some cases, it may be necessary to move a load that has been raised vertically relative to the base by a table lift horizontally a relatively small distance. In such a case, in the prior art, a movable table that can move horizontally with respect to the table is superimposed on the table connected to the scissor-like link mechanism. Therefore, the table is doubled, the height of the table lift at the lowered position is increased, and the weight of the table is increased.
Another disadvantage was that the cost was high. If the horizontal movement directions of the load are two directions perpendicular to each other, this is further disadvantageous because triple tables must be used.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cargo handling machine in which a movable member is moved relative to a base by a scissor-like link mechanism, and the movable member can be moved relative to the scissor-like link mechanism.

Next, the present invention will be explained along with embodiments of the present invention shown in the accompanying drawings.

In Figures 1 and 2, a table lift is shown as an example of the cargo handling machine of the present invention, but the present invention is not limited to this. It can also be applied to operating pushers, etc.

The table lift of the present invention has a first
It comprises a base 2 having a flat surface 1 and a table or movable member 4 having a second flat surface 3 which is parallel to the base 2 and is a track surface parallel to and opposite to the first flat surface 1.

A pair of scissor-shaped links are provided between the movable member 4 and the base 2, and the movable member 4 is connected to the base 2 while maintaining the parallel relationship between the first plane 1 and the second plane 3.
Link mechanism 5 that supports so that it can be raised and lowered against
is provided. The scissor-like link is provided in a plane perpendicular to the base 2 and the movable member 4,
They are pivotally connected to each other by pin 6 at approximately the center and are approximately X.
It is composed of a first arm 7 and a second arm 8 which have a letter shape, and such a scissor-like link connects to the base 2.
A pair of scissor-like links are provided between the movable member 4 and the movable member 4, one on each side, and operate in planes parallel to each other. The lower end of the first arm 7, that is, the first end 9
is pivotally attached to the base 2 by a pin 10 fixed to the base 2, and the upper or second end 11 is rotatably attached to the second end 11 and is a roller capable of rolling on the second plane 3. It engages with the movable member 4 via 12. The lower end or first end 13 of the second arm 8 is rotatably attached to the first end 13 and is connected to the first plane 1.
It engages with the base 2 via a roller 14 that can roll thereon, and its upper or second end 15 is pivotally connected to the movable member 4 so that its position can be adjusted by a moving device 16, which will be explained in detail later.

In the illustrated example, since the link mechanism 5 is constituted by a single-stage scissor-like link, the first end 9, which is pivotally connected to the base 2 by the pin 10 of the first arm 7, is the lower end of the link mechanism 5. That is, the first end 13 having the roller 14 of the second arm 8 is the moving end of one end of the link mechanism 5, and the second end 11 having the roller 12 of the first arm 7 is the pivot end of the link mechanism. The second end 15 is the upper end of the link mechanism 5, that is, the other end of the moving end, and is pivotally connected to the moving device 16 of the second arm 8.
This is the other end of the pivot point. Each scissor-shaped link is composed of two arms, and each scissor-shaped link is made of a rigid beam 1 fixed at both ends to the second arm 8 of each scissor-shaped link, as is well known.
7 so as to maintain the parallel relationship described above. Therefore, each moving end of one end and the other end of the link mechanism 5 (the second end 11 of the first arm 7 and the first end 13 of the second arm 8) follows a predetermined movement path within the two planes parallel to each other. along the first plane or the second plane 3.

The table lift is also provided with an actuator 18 operatively connected to the linkage 5 for opening and closing the linkage 5. In the illustrated example, the actuating device 18 is a hydraulic or pneumatic cylinder device having a cylinder 19 and a plunger 20, and the tail end of the cylinder 19 is connected to a base by another pin (not shown) coaxial with the pin 10. 2, and the tip of the plunger 20 is pivotally connected to a bracket 22 which is fixed to a beam 17 fixed between the second arms 8 by means of a pin 21.

As explained above, the movable member 4 of the table lift of the present invention is equipped with the moving device 16, and the other end of the link mechanism 5, that is, the upper pivot end (the second end 15 of the second arm 8) attached to the device.

The moving device 16 can move within a certain range in a direction approximately parallel to the above-mentioned predetermined moving path of the upper end of the link mechanism 5 (the second end 11 of the first arm 7), and can move within a certain range. Movable member 24 that can be fixed in position
The movable member 24 is provided with the above-mentioned pivot end (second
The end 15) is pivoted. In the illustrated example, as is particularly clear from FIG.
has a circular support hole 26 whose axis is parallel to the predetermined movement path mentioned above. Support hole 2
6, one end of a jack screw 27 extending parallel to the above-mentioned predetermined movement path is rotatably inserted. The jack screw 27 is provided with a large diameter portion 28, and the bracket 25 is connected between the large diameter portion 28 and a pillow block 29 fixed to the jack screw 27.
I'm holding it in between. Therefore, the jack screw 27 can rotate within the bearing hole 26 but cannot move axially.
The threaded portion 30 of the jack screw 27 has the movable member 2
The parent nut 31 of No. 4 is screw-fitted. The parent nut 31 is a nut case 3 having two bearing holes 32.
It is housed within 3. Inside each bearing hole 32, a pivot pin 3 is provided which pivots the second end 15 of the second arm 8 of the link mechanism 5, that is, the pivot end, and the movable member 24 to each other.
4 is rotatably supported at one end. The other end of the pivot pin 34 is fixed to the pivot end 15 of the second arm 8 by welding or the like, and a roller 35 is rotatably attached to the outside of the second arm 8. The roller 35 can roll on a guide surface 37 extending parallel to the second plane 3 on the lower surface of the movable member 4 and parallel to the above-mentioned predetermined movement path. In the illustrated example, the second plane 3 of the movable member 4 and the guide surface 37 are on the outer surface of the flange of the same groove-shaped member and are coplanar with each other, and the axis of the jack screw 27 and the pivot pin The axis of the roller 34 is at the same height as the axis of the roller 12 at the moving end 11, and the axis of the roller 35 is the same as the axis of the roller 12. The jack screw 27 includes a drive device 3 that rotates the jack screw 27 within the support hole 26.
6 is provided, and in the example shown, a drive device 36
is a handle fixed to one end of the jack screw 27.

In order to prevent the movable member 4 from lifting off the rollers 12 or 35 and tilting if the load on the table or movable member 4 is biased to either side of the movable member 4, a framework 38 is provided for the roller 12. However, a framework 39 is provided for the roller 35. The framework 39 for the roller 35 serves to prevent the movable member 4 from floating up from the roller 35, and limits the range of horizontal movement of the movable member 4 relative to the roller 35 and therefore the link mechanism 5, so that the parent nut 31 can be moved away from the jack screw 27. It also has the effect of preventing it from falling off.

On the table or movable member 4 of the illustrated table lift, there is provided a transversely movable and rotatable movable table 42 having a transversely movable handle 40 and a rotating handle 41 .

The lifting and lowering operations of the table lift, which is the cargo handling machine of the present invention configured in this manner, are the same as those of the conventional type without the moving device 16. The moving device 16 can be operated whether the table lift is in the raised or lowered position. Mobile device 1
When the handle 36 of 6 is rotated by hand, the jack screw 27 rotates within the support hole 26 of the fixing member 25. The moving member 24 has a parent nut 31 screwed into the threaded portion 30 of the jack screw 27, and the moving member 24 is connected to the pivot pin 3.
4 to the link mechanism 5, it cannot rotate around the axis of its screw hole, but when the jack screw 27 rotates, it moves in the axial direction of the jack screw 27 in accordance with the direction of rotation. Therefore, the second end 15 of the second arm, that is, the pivoting end of the other end of the link mechanism 5, moves relative to the movable member 4 in a direction parallel to the axis of the jack screw 27. At this time, the second end 11 of the first arm moves on the second plane 3 in accordance with this movement. As a result, the movable member 4 moves parallel to the above-mentioned predetermined movement path with respect to the link mechanism 5. Since the illustrated moving device 16 uses a jack screw mechanism, it can be moved as desired by rotating and stopping the handle 36. It can also be fixed in any position. 1st
A chain line 43 in the figure indicates the movement position of the movable member 4.

In this manner, in the cargo handling machine of the present invention, the movable member directly supported by the link mechanism so as to be able to move up and down can be adjusted in position with respect to the link mechanism, and the position can be adjusted on the movable member as conventionally done. There is no need to stack moving tables with mechanisms.

Although the material handling machine of the invention has been described with respect to a table lift of a particular construction, many variations are possible.

For example, the link mechanism can be multi-stage, and the arm has rollers at both ends that engage with the base and the movable member, and is pivotally connected to the base and the movable member by a support link pivotally connected to each arm. A link mechanism can also be used.

Further, the moving device may be provided at the pivot end of the link mechanism on the base side. In this case, if the cylinder device is used as an operating device for the link mechanism, the tail end of the cylinder may also be adjustable in position.
Rather, it is preferable to connect the cylinder arrangement between relatively movable arms of the linkage.

In the illustrated example, the moving device uses a jack screw mechanism, but it may also use a hydraulic cylinder, a chain, or the like. The drive of the moving device can also be of the manual, hydraulic and electric type, especially when using jack screws and chains.

The present invention can also be applied to pushers, etc., in which the movable member moves in the horizontal direction while being supported by a link mechanism.

Furthermore, the actuating device that operates the link mechanism is hydraulically operated.
A pneumatic or electric jack screw mechanism may also be used.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a table lift which is an example of the cargo handling machine of the present invention, and Fig. 2 is a side view showing the line -
FIG. DESCRIPTION OF SYMBOLS 1... First plane, 2... Base, 3... Second plane, 4... Movable member, 5... Link mechanism, 9...
Pivot end, 11...Moving end, 13...Moving end, 15
... Pivot end, 16 ... Movement device, 19, 20 ...
Actuation device, 24... Moving member, 25... Fixed member, 26... Supporting hole, 27... Jack screw, 3
1... Lead screw, 34... Pivot pin, 35... Roller, 36... Drive device.

Claims (1)

[Claims for Utility Model Registration] (1) A base 2 having a first plane 1, a movable member 4 having a second plane 3 facing and substantially parallel to the first plane, and at least a pair of scissor-shaped a pivot end 9 having a link and pivotally connected to the base at one end; and the first
a moving end 13 that can move along a predetermined moving path on a plane; a pivoting end 15 that is pivotally connected to the movable member at the other end; and a moving end that can move along a predetermined moving path on the second plane. 11, the link mechanism 5 movably supporting the movable member relative to the base while maintaining a substantially parallel relationship between the first plane and the second plane; In a cargo handling machine comprising actuating devices 19 and 20 operatively connected to open and close the link mechanism to move the movable member relative to the base, the base and the movable member A moving member 2, at least one of which is adjustable in position with respect to at least one of the base and the movable member in a direction substantially parallel to the predetermined movement path of the moving end of the link mechanism.
4, wherein at least one of the pivot ends of the link mechanism is pivotally connected to a moving member of the moving device. (2) The moving device includes a fixed member 25 having a supporting hole 26 fixed to at least one of the base and the movable member, and a fixed member 25 that is rotatably and axially inserted into the supporting hole of the fixed member. A jack screw 27 that is fixed to and supported by and extends substantially parallel to the predetermined movement path, a parent nut 31 that is screwed onto the jack screw, and that pivots the parent nut and the pivoting end of the link mechanism to each other. 2. A cargo handling machine according to claim 1, comprising a pivot pin 34 for mounting and a drive device 36 for rotating said jack screw within said support hole. (3) The at least one pivot end of the link mechanism is provided with a roller 35 that rolls on at least one of the base and the movable member. The cargo handling machine described in item 2.