JPH05155427A - Turnover mechanism for heavy goods - Google Patents

Abstract

PURPOSE:To carry out a turnover operation easily and safely by holding heavy goods surely without relying on a special motive power when the heavy goods are turned over. CONSTITUTION:A turnover mechanism for heavy goods, having an one-side opened work receiving part 1 whose side surface is nearly U-shape, is composed of a turnover guide body 3 arranged a circular rotary surface 2 rotatably on its periphery and a pair of receiving and supporting discs 8, 9 arranged in parallel closably/separably in the work receiving part 1 for supporting a work W to be sent in the work receiving part 1 and a work supporting part 6 capable of placing the work W and work stoppers 7 which can stop the work W in the inner side of the work supporting part are arranged on respective receiving and supporting discs 8, 9. Such constitution is provided that when the work load is caught to the stoppers 7 by the rotation, a pair of receiving and supporting discs 8, 9 are moved in the close direction by its force and a pair of receiving and supporting discs 8, 9 are installed to the turnover guide 3 by links 11, 12 holding the work W and the opening/closing degree of both receiving and supporting discs 8, 9 is made constant by a linking means 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heavy object reversing mechanism for reversing various heavy objects.

[0002]

2. Description of the Related Art For example, a device for rotating a large number of pallets by 90 degrees is known as shown in Japanese Utility Model Laid-Open No. 51-4079, which itself has three arch-shaped supports on the back of an L-shaped mounting table. A body is provided, and the support is placed on a rotating body and rotated by 90 degrees.

According to this apparatus, the work can be changed from a horizontal state to a vertical state, or vice versa, by changing the posture of the work by 90 degrees. However, the rotation method using such a mounting table cannot be implemented because the work will fall down if the posture of the work is changed beyond 90 degrees.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to secure a work made of a heavy object without relying on special power such as hydraulic pressure, pneumatic pressure or electric power. It is necessary to ensure that a reversal of 90 degrees or more or 180 degrees can be performed safely.

[0005]

In order to solve the above-mentioned problems, the present invention has an inversion guide having a side surface substantially U-shaped work receiving portion 1 having an opening on one side and a circular rotating surface 2 provided on the outer periphery. By mounting the rotating surface 2 on the plurality of rollers 5 provided on the base 4 provided with the body 3, the reversing guide body 3 can be rotated about a horizontal axis to receive a work. A pair of receiving and supporting boards 8, 9 having a work supporting portion 6 for supporting a heavy workpiece W fed into the portion 1 and a stop portion 7 provided at an inner portion thereof for stopping the workpiece W. Are arranged so as to be movable in parallel in the work receiving part 1, and the load of the work W is stopped by the inversion part 7 by reversing.
The pair of support plates 8 and 9 are swung in the approaching direction by a pushing force, and the support plates 8 and 9 are attached to the inversion guide body 3 by a pair of links 11 and 12 that hold the work W, respectively. The means for connecting both the support plates 8 and 9 by the connecting means 10 is provided in order to keep the degree of approach and separation of the support plates 8 and 9 constant.

According to the above structure, the work W is placed on the work supporting portion 6 on either side of the pair of support plates 8 and 9 and is rotated while being stopped by the stop portion 7. As a result, the load of the work W acts so as to hold the work W by bringing the pair of support plates 8 and 9 closer to each other by the links 11 and 12 and the connecting means 10.

Incidentally, power for rotating the reversing guide body 3 itself is provided as needed, and the embodiment is described as an electric type using a chain and a sprocket. However, this is just an example, and the reversal guide body 3 can be driven by another method such as a rack and pinion or a piston.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be given below with reference to the drawings. 1 to 3
Shows a heavy load reversing device incorporating a reversing mechanism according to the present invention, and FIGS. 4 and 8 show the device together with a conveyor for loading and unloading heavy loads.

The reversing guide body 3 has a side surface substantially U-shaped work receiving portion 1 having an opening on one side, and an outer peripheral surface of a portion surrounding the work receiving portion 1 is a circular rotating surface 2. In the case of the embodiment, the turning surface 2 is provided on both right and left sides of the reversing guide body 3 (see FIG. 1), and the chain hanging frame 18 for tensioning the chain 15 is provided at the center portion with the same turning radius as the turning surface 2. It is provided with an arc.

The installation range of the rotating surface 2 is 180 degrees from the work receiving portion 1 to one side, for example, from the right side to the other side as shown in the drawing.
The reversing guide body 3 is set in such a range that it can be reversed. This range is about three quarters considering the distance between the rollers 5 required to support the reversal guide body 3.

A pair of receiving support plates 8 and 9 are provided in parallel portions of the work receiving portion 1 corresponding to the upper and lower sides of the U-shape. The support plates 8 and 9 are the work receiving portion 1
A work support part 6 that takes a substantially horizontal posture in a loading / unloading state in order to support a heavy work W fed therein.
It has a substantially L-shape and is provided in the inner portion thereof and has a stop portion 7 for stopping the work W.

A large number of rollers 13 are arranged in a row on the work supporting portion 6 of each of the receiving and supporting boards 8 and 9 so that a heavy work W can be rolled to the stop portion 7. Each roller 13 can be driven by power.

The support plates 8 and 9 are attached to the reversing guide body 3 so as to be movable in parallel by using a pair of front and rear links 11 and 12, respectively.

Each pair of links 11, 12 is a swinging link 11 axially supported in front of and behind the receiving portion 1 of the reversing guide body 3.
a and 12a, and pivot support arms 11b and 12b which are pivotally supported by the other ends of the swing links 11a and 12a and which are fixed to the receiving support plates 8 and 9 respectively.

Each swing link 11a, 12a, 11a, 1
2a has a pair of receiving and supporting discs 8 and 9 in a fully opened state with its tip pivoted to the outermost direction (FIG. 2). In addition, a spring 14 that acts in a direction to keep the pair of support plates 8 and 9 in a fully opened state.
Is provided for each link. Both support plates 8 and 9
The state in which is closest to is preferably at the same time as when the reversal guide body 3 faces directly above or before that.

The moving amounts of the support plates 8 and 9 are designed to be constant with each other by the connecting means 10 that connects them to the reversing guide body 3.

The connecting means 10 is a connecting link 10 axially supported by each of the supporting plates 8 and 9 at a position symmetrical with respect to the center line of opening and closing.
a, 10a and the rear end 19 of each connecting link 10a, 10a
And a guide 10b for restraining the moving direction of the rear end 19 on the opening / closing center line. By making the connecting means 10 asymmetrical, it is possible to change the approaching / separating opening degree of each of the supporting plates 8 and 9.

The reversing guide body 3 is motor-driven by a sprocket 17 that meshes with the chain 15. The chain 15 is stretched from one end of the rotating surface 2a to the other end through a sprocket 17 'pivotally supported by the base 4, a sprocket 17 driven by a motor 16 and an adjusting sprocket 17 ".

The conveyors 21 and 22 shown in FIGS.
Are for loading and unloading the work W, respectively. Therefore, when the work supporting portion 6 is set horizontally, it has the conveying rollers 23 and 24 which are at the same height and in a straight line. The roller conveyors 21 and 22 are less difficult to move the work W by human power when the work W is up to about 1 to 2 t, but can be power-driven because it is dangerous if it is more than that.

In the heavy-weight reversing mechanism configured as described above, the work W is placed on the lower work supporting portion 6 in the work receiving portion 1 as shown in FIG.
Rotate upwards. Then, the work W pushes the locking portion 7 of the lower support plate 8 by its own weight,
The links 11 and 12 move so that the pair of work supporting plates 8 and 9 approach each other at the same time (FIG. 5). It is held by 9 (Fig. 6).

The work W is held by the pair of work supporting plates 8 and 9 mutually, and the work W is transferred from one to the other at the same time. Therefore, the work W is not shocked and the work W is held by a fixed force. Is proportional to the weight of the work W, so that it is not too large or too small and a necessary and sufficient force always acts.

Then, when the reversing guide body 3 is further rotated, the load of the work W is applied to the other receiving support board 9 contrary to the above. On the other hand, the supporting plate 8 up to that point moves away from the work W (FIG. 7), and eventually faces the direction reversed by 180 degrees (FIG. 8). Here, the work W on the other supporting board 9 is carried out in a state of being turned upside down.

[0023]

Since the present invention is constructed and operates as described above, the work W made of a heavy object does not use any special power such as hydraulic pressure, pneumatic pressure or electric power.
Securely held by a pair of support plates 8, 9
It is possible to safely perform inversion of 0 degrees or more or 180 degrees. Particularly, in the configuration of the present invention, the work W
Since the load is converted to a fixed force by a link, the structure is simplified, and the 180-degree inversion operation, which is extremely difficult in the conventional method, can be rationally performed.

[Brief description of drawings]

FIG. 1 is a front view of an apparatus that implements a reversing mechanism according to the present invention.

FIG. 2 is a side view of the above.

FIG. 3 is a rear view of the above.

FIG. 4 is a side view of a state where a work is carried into the reversing mechanism.

FIG. 5 is a side view of a work inclining state.

FIG. 6 is a side view of a work upward state.

FIG. 7 is a side view of the work inclined state.

FIG. 8 is a side view of the work carrying-out state which is also reversed.

Claims (5)

[Claims] 1. A plurality of side-substantially U-shaped work receiving portions 1 each having an opening, a reversing guide body 3 provided with a circular rotating surface 2 on an outer periphery thereof, and a plurality of base 4 are provided. By placing the rotating surface 2 on the roller 5, the reversing guide body 3
Is rotatably mounted around a horizontal axis, and is provided in the work support portion 6 for supporting the work W of the heavy object fed into the work receiving portion 1 and the inner portion thereof, and stops the work W. A pair of receiving and supporting discs 8 and 9 having a stop portion 7 for stopping are arranged in the workpiece receiving portion 1 so as to be able to move in parallel, and the load of the work W is pushed by the reversal to support the pair of receiving and supporting boards. The supporting plates 8 and 9 are attached to the reversing guide body 3 by a pair of links 11 and 12 that hold the work W by swinging the plates 8 and 9 toward each other. An inversion mechanism for heavy objects, characterized in that both supporting plates 8 and 9 are connected by a connecting means 10 in order to keep the opening and closing degree constant. 2. The reversing guide body 3 has a circular rotating surface 2 capable of reversing 180 degrees from a state where the substantially U-shaped work receiving portion 1 faces one side to the other side. The reversing mechanism for heavy objects according to claim 1. 3. The reversing mechanism for heavy objects according to claim 1, wherein a large number of rollers 13 for feeding the work W are arranged in a row on the work supporting portion 6 of the pair of receiving and supporting boards 8 and 9. 4. The reversing mechanism for heavy objects according to claim 1, further comprising a spring 14 acting to keep the pair of support plates 8 and 9 in a fully opened state. 5. A chain 15 for driving the reversing guide body 3 is stretched along a circular rotating surface 2, and a sprocket 17 meshing with the chain 15 and driven by a motor 16 is provided. The heavy object reversing mechanism according to claim 1, which is mounted on the base 4.