JPS5834160Y2 - Skip hoist bucket restoration device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a packet-type skip hoist and packet restoring device that travels along a rail to lift and transport articles.

In a skip hoist, which is generally used as a type of lightweight hoist, as shown in Figure 1, a packet guided on a rail is raised and lowered by a wire rope, and by appropriately designing the shape of the rail at the upper end of the rail, the packet is tilted and the content is lifted. is discharged by gravity.

As for the packet tilting mechanism of this skin hoist device, the packet 1 has upper rollers 2 on both sides near its opening, and lower rollers 3 on both sides of the bottom, each with a guide rail (usually made of channel steel). 7 and 8 so that it can run.

Further, the lower end of a pulling frame 4 provided between the packet 1 and a guide rail 80 is connected via a support shaft 5 provided at the bottom of the packet 1, and a roller 6 is provided at the upper end of the pulling frame 4.
The packet 1 is attached so that it runs within the guide rail 8, and the upper part of the draw frame 4 is pulled by the wire rope 9, so that the packet 1 is moved to the rail 7.8 as shown by chain lines A, B, and C in FIG.
When it reaches the position shown by the solid line, the contents are discharged by gravity at the required angle, and then when the rope 9 is loosened, the packet 1 recovers and descends due to its own weight. It is something.

In this case, in order for the packet to recover under its own weight, the force G acting on the center of gravity of the packet 1 is applied to the support shaft 5 by the moment created around the roller 2, which serves as a fulcrum, and by approximately half of the own weight of the pulling frame 4. The sum of both couples, the moment created by gravity G□ with respect to roller 2, must be in the direction of restoring the packet.

If the packet is tilted to the position shown by the chain line E, the gravity forces G'A and G' will no longer be possible.

In order to avoid this situation, packets must be stopped with some margin in the restoration limit, so generally the solid line D
The conventional practice is to set the slope at the position of ′ as the limit.

However, depending on the type of contents, such as sticky substances, it may be necessary to tilt the packet nearly vertically when holding it, but this is not possible with the conventional structure. Attempts have been made to provide a large inclination to the shaft or add another vibrator, but all of these methods have complicated structures or have problems in terms of workability.

The present invention attempts to eliminate these conventional drawbacks, and uses a simple mechanism to allow the packet to be tilted vertically or in a higher position, significantly improving work efficiency, helping to save energy, and making it economically safe. The object of the present invention is to provide a packet recovery device that can be operated in accordance with the present invention.

The present invention is a skip hoist device in which a packet 1 guided on rails h7 and h8 is tilted by a draw frame 4 to discharge the contents, and a skip hoist device is provided near the packet tilting shaft position of the rail 7. An arm 12.16 is provided which rotates about a support shaft 11, and a restoring force is provided on the arm 16 so that the arm 12 maintains contact with the packet 1 to form a restoring arm, and the packet 1 is tilted. The arm 12 is placed in contact with the packet 1 before discharging its contents, and thereafter while the packet 1 is tilted at the required angle beyond the dead center, and the arm 12
This is a skip hoist packet restoring device characterized in that the packet 1 continues to receive restoring force from the arm 12 while the packet 1 returns to the position where it starts to make contact with the arm 12.

An embodiment of the present invention will be described with reference to FIGS. 2 and 3. A packet 1 has upper rollers 2 on both sides near its opening, and lower rollers 3 on both sides of the bottom. It can travel by engaging with guide rails (usually made of channel steel) 7.8.

Further, the lower end of a pulling frame 4 provided between the packet 1 and a guide rail 80 is connected via a support shaft 5 provided at the bottom of the packet 1, and a roller 6 is provided at the upper end of the pulling frame 4.
is mounted so as to run within the guide rail 8, and the upper part of the pull frame 4 can be pulled by a wire rope 9 to raise and lower it.

In order to obtain the tilt of the packet 1, the outer rail 8 is constructed on a concentric arc with the center of the roller 2, which is the center of tilting of the packet, and a bearing is attached to the guide rail 7 near the tilting center axis. A support shaft 11 is rotatably disposed through means such as 10, and an arm 12 is fixedly mounted on the shaft 11.
The tip of this arm 12 is equipped to contact the packet back or an extension 13 of the packet back.

Note that if the size of the packet 1 is appropriate, it is sufficient to omit the extension portion 13 and design the roller 2 to be positioned closer to the bottom plate.

Further, since the extension portion 13 and the arm 12 make a sliding movement, if necessary, anti-friction means such as rollers 14 may be applied to the contact portion.
For example, it may be provided at the tip of the arm 12, and the arm 12 may be
Alternatively, a reinforcing material or a wear-resistant material may be attached to the sliding surface 15 with which the roller 14 is to be engaged.

On the other hand, an arm 16 is fixed on the support shaft 11 (in the illustrated example, on the outside of the guide rail) at an appropriate angle, and a suitable weight 17 is fixed on the arm 16. The restoration arm is ready.

When the weight 17 is on standby, it is supported on a cushioned collar 18 provided on the guide rail 7 (at the position shown in the figure).

Note that instead of a pair of the arm 12 and the sliding surface 15, a combination of a notched gear and a rank, a notched chain wheel and a check 7, etc. may be used. Also, in the explanation, the arm 16 and the arm 12 are separate bodies, and the arm 16 is a pair of rails. Although it is placed on the outside, depending on the design conditions, it is also possible to make both of them into one body and place them inside the rail as a lever with the support shaft 11 as the center, one end as the point of force application, and the other end as the point of action.

When the packet 1 is wound up along the guide rail 7.8 by the rope 9, the packet 1 first reaches the position F shown by the chain line (Fig. 2), which is at the same inclination as the limit position in Fig. 1. ), but here the arm 12 comes into contact with the packet 1.

If you continue to wind up the packet, the back of the packet 13'
Or, since the extended portion 13 pushes the arm 12, the packet finally tilts to the position H shown by the solid line while rotating the arm 16 with the weight 17 upward.

At this time, the packet 1 itself has a moment opposite to the clockwise direction around the axis of the roller 2, and the arm 12 has a rotational moment around the axis of the roller 2 in the time division direction that is larger than the moment of the packet 1. Therefore, when the rope 9 is loosened, the packet 1 will surely return to its original position, and when it reaches position F, the weight will return to its standby position.

At this point, the packet is at an angle that allows it to restore itself with its own blade, so the subsequent descent can be carried out without any problems.

As described above, with the present invention, the back wall of the packet can be operated in the vertical state or in the reverse inclined state 1 beyond the vertical state, and even if the transported item is sticky, it can be disposed of accurately and efficiently. This is now possible by tilting at a large angle, which was previously impossible, and greatly increases the efficiency of emptying the contents, while lifting the arm against the drag of the weight - which requires extra energy. However, since most of the weight of the weight moves in balance with the packet's own weight, it is only necessary to add as much hoisting force as necessary for restoring force, and when the extra hoisting force is needed, most of the contents are Since the motor has already been discharged, the motor hoisting force can be operated safely without the risk of overloading.Since it can be configured by adding a small number of simple and reliable parts, there is no need for safety or maintenance, and there is no need for troubleshooting. It has many practical advantages, such as not having to worry about.

[Brief explanation of the drawing]

FIG. 1 is a side view of a packet tilting portion in a conventional skimp hoist, FIG. 2 is a surface survey view of the packet tilting portion in an embodiment of the present invention, and FIG. 3 is a partial slope view. 1...Packet, 2,3...Roller,
4...Drawing frame, 5...Spindle, 6...
...Roller, 7, 8...Rail, 9...
...Wire rope, 10...Bearing, 11...
...Spindle, 12...Arm, 13...
・Extension part, 13' ...Packet back, 14
...Roller, 15...Sliding surface, 1
6... Arm, 17... Weight, 18.
·····cushion.

Claims (1)

[Claims for Utility Model Registration] ■ Pull the packet 1 guided on the rail 7.8 to the frame 4
A skim hoist device is provided with arms 12 and 16 that rotate around a support shaft 11 provided near the packet tilting support shaft position of the rail 7, The arm 16 is provided with a restoring force biasing member so that the arm 12 remains in contact with the packet 1, and the arm 16 comes into contact with the packet 1 before the packet 1 tilts and discharges the contents. The packet 1 receives a restoring force from the arm 12 while the packet 1 tilts beyond the dead center to a required angle and returns to the position 1 where the arm 12 and the packet 1 begin to contact each other. A skip hoist packet recovery device characterized in that it is configured to continue. 2. The packet restoring device according to claim 1, wherein the arm 12 is provided with a sliding or rolling member 14 at a contact portion with the packet 1. 3. The packet restoring device according to claim 1 or 2, wherein the rail is provided with a stopper 18 capable of holding the arm 16 forming a part of the restoring arm in a standby position.