JPS5895009A - Drop shock relaxing device - 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] Technical Field The present invention relates to a method for collecting scraps of steel pipes discharged from a pipe manufacturing machine in a steel pipe manufacturing facility, etc., and scraps conveyed by a conveyor in a scrap recovery facility, along their passage paths. This invention relates to a fall impact mitigation device for a buffer tank.

BACKGROUND ART As shown in FIG. 1, in steel pipe manufacturing equipment, etc., the height difference at the competition f11t for transporting the cut piece C from the cut piece discharge port 2 of the pipe manufacturing machine 1 installed on the floor F is 5 m. There is a place where there is a rank. Therefore, conventionally, the discharged scraps C of steel pipes etc. fall down on the slope 3 and the receiver falls onto the stand 41 and is deenergized to some extent, and then the receiver is moved by operating the hydraulic cylinder 42 so that the stand 41 is tilted. , the scraps C were moved onto a conveyor 11 for conveyance. However, the weight of each piece of this type of cut piece C is 100 kg for a large diameter pipe, and 800 kg for a heavy piece.
As a result, the stand 41 and hydraulic cylinder 42 of the receiver were severely damaged by the impact of such a heavy object falling from a height of 5 meters, and had to be replaced at an early stage. Also, as a matter of course, the scrap C collided with the receiver pedestal 41, which generated an extremely loud impact sound.

Furthermore, even in outdoor scrap collection equipment that collects heavy scrap such as steel pipes, steel bars, and steel ingots that have been transported by conveyor from inside the factory, heavy objects falling from high places can cause damage to various equipment in the falling path. Not only are they severely damaged and have a short lifespan, but they also have the disadvantage that the safety of workers is threatened by the scattering of crushed objects and the like when they fall.

Purpose This invention was made in order to eliminate the above-mentioned defects, and its purpose is to suspend a buffer member made of a plurality of chains from above the passage path of an object moving by inertia or gravity. Another object of the present invention is to provide a fall impact mitigation device that can prevent damage to surrounding equipment and improve safety in a working environment by restraining and deenergizing a moving object using the buffer member.

EXAMPLES Hereinafter, examples embodying the present invention will be described with reference to the drawings.

First, we will start with the first step, which is embodied in the steel pipe manufacturing equipment shown in Figure 2.8.
To explain the embodiment, a steel pipe manufacturing machine 1 is installed on a concrete floor F, and scraps C of steel pipes cut to a fixed length are successively discharged from an outlet 2 of the machine. A concrete inclined surface 3 extending diagonally downward is formed in front of the discharge port 2, and serves as a falling path for the scraps C as heavy falling objects to fall.

A rotary drum 6 serving as a drive shaft and a support body having a rectangular cross section and having one end connected to a drive source 4 such as a gear motor and the other end supported by a bearing 5 are installed above the inclined surface 3. etc., it is actively rotated. A buffer member 9 consisting of a large number of chain elements 8 is suspended between a pair of flanges 7 formed at both ends of the rotating drum 6, and as the rotating drum 6 rotates, its lower end is moved to the inclined surface 3. It is designed to rotate gently in the direction of arrow P when it is placed over the body. Further, a groove 10 is formed at the lower end of the inclined surface 3, and an attack conveyor 1° is installed in this groove 10 for sequentially conveying the scraps C that have passed between the buffer member 9 and the inclined surface 3. There is.・-, U Here, the structure of the buffer member 9 will be explained mainly based on FIG. 8. The chain element 8 of this embodiment has a reinforcing material (
An elongated link chain integrally having a stan)') 8a is used, and a large number of these chain elements 8 are connected in series to form an annular endless chain 12. And between the chain elements 8 where the plurality of endless chains 12 face each other on the left and right,
A plurality of connecting chain elements 13 having the same shape as the chain element 8 are connected and arranged in parallel to form a buffer member 9 as a whole.

Now, in the shock mitigation device of this embodiment configured as described above, when the cut ends C are discharged from the steel pipe manufacturing machine 1, the cut ends C fall down on the inclined surface 3 and collide with the buffer member 9. Since the buffer member 9 is composed of a large number of chain elements 8, it is bent as appropriate depending on the weight and shape of the piece C to exhibit a buffering effect. In this way, the deenergized cut piece C is held between the inclined surface 3 and the buffer member 9, which rotates in the direction of arrow P in FIG. 2 as the rotary drum 6 rotates. After being gently conveyed downward from above, it is released from the buffer member 9 at the lower end of the inclined surface 3 and transferred onto the conveyor 11.

If the buffer member 9 is constructed of the chain element 8 having the reinforcing material 6 as in this embodiment, both the weight and the breaking strength are large, so even a considerably heavy piece can be reliably restrained and deenergized. , can withstand long-term use. In addition, if the prismatic rotating drum 6 is used as the drive shaft, it rotates with the buffer member 9 suspended, so there is no risk of the rotating drum 6 idling, and the buffer member 9 can be reliably moved at a low speed. It can be rotated. Rather, in this case, unlike a normal chain drive using a chain wheel or the like, there is some play in the engagement relationship between the rotating drum 6 and the buffer member 9, and this play reduces the impact when the piece C falls. Therefore, damage to the drive source 4 such as a motor can be prevented.

In this way, by arranging the falling impact mitigation device on the steel pipe scrap conveyance path as described above, the scrap C can be reliably deenergized and transported, thereby preventing damage to the inclined surface 3 and the conveyor 11. , it is possible to prevent the generation of impact noise.

Next, a description will be given of a second embodiment in which this invention is embodied in a scrap collection facility shown in Fig. 4.5.A scrap collection shed 21 built outdoors has a collection conveyor 2
Steel pipes from inside the factory by 2.

Various heavy scraps 8 such as steel bars and steel ingots are transported. Discharge port 22a of this recovery conveyor 22
An inclined chute 23 is provided below, and heavy scrap 8 discharged from the collection conveyor 22 falls onto this inclined chute 23.

A drive source 4 such as a gear motor and a pair of bearings 5 are installed on a pedestal 24 above the tilting ute 23.
A rotating drum 6 made of a prismatic body is installed between the pair of bearings 5 as a support and a drive shaft. and,
As in the first embodiment, a buffer member 9 consisting of a plurality of endless chains 12 is suspended on this rotating drum 6. Buffer member 3
The end of the inclined chute 23 is placed over the tip of the inclined chute 23, and is gently rotated in the direction of the arrow Q as the rotating drum 6 rotates.
A plate 25 is provided below the support plate 25 so as to be rotatable between the solid line position and the chain line position in FIG. A fall path is formed.

On the other hand, a pair of support rods 28 as supports are fixed to the beam 27 of the scrap collection shed 21. Both support rods 2
A chain curtain 30 as a buffer member, which is constructed by horizontally connecting a plurality of parallel chains 29 to each other, is suspended from each of the chains 8, and at the lower end of the chain curtain 30, a receiver is used to collect heavy scraps falling on the plate 25. It is designed to restrain and deactivate S. Additionally, recovery vehicles 31 and 32 are arranged below both chain curtains 3o. Now, in the scrap recovery equipment configured as described above, heavy scrap S transported from the recovery conveyor 22 is is discharged onto the inclined chute 23 and is deenergized by the buffer member 9 in the same manner as in the first embodiment, and then there is a gap between the buffer member 9 rotating through the rotation of the rotary drum 6 and the inclined chute 23. The receiver, which is conveyed in a restrained state and is in one rotational tilt position, is released onto the plate 25. and,
The heavy scrap S falling on the receiving board 25 collides with either the left or right chain curtain 30 and is buffered, and then falls into one of the collection cars 31 and is collected.

When one collection vehicle 31 is full, the receiver is placed on plate 2.
5 to the other rotational and inclined position, and the heavy scrap S is dropped into the other collection vehicle 32.

In this way, the heavy scrap 8 can be continuously collected by using the two collection vehicles 31 and 32 alternately, thereby improving work efficiency. Further, unlike the buffer member 9, the chain curtain 3o is not rotated, but due to its own weight and flexibility, it deenergizes the heavy falling object S and reduces the impact received by the recovery vehicle 31, 32. At the same time, the receiver can prevent heavy scrap S falling onto the plate 25 from scattering.

In this way, if the fall impact mitigation device is placed in the scrap recovery equipment as described above, the heavy scrap S can be recovered in a de-energized state, so that the inclined chute 2 on the falling path can
3. This not only prevents damage to various equipment such as the five receivers 259 and collection vehicles 31, 32, but also prevents the scattering of heavy scraps and crushed materials, thereby improving safety.

It should be noted that the present invention is not limited to the configurations of the above-mentioned embodiments. For example, as shown in FIG. The structure of the member 9 and the chain curtain 30, the use of a chain element that is smaller than the chain element 8 of each of the above embodiments and without a reinforcing material in the center, and the shape of the rotating drum as the drive shaft are changed. The structure and shape of each part may be arbitrarily changed and embodied without departing from the spirit of the invention, such as changing the cross section to a hexagonal shape or a hexagonal shape, or using a chain wheel instead of a rotating drum. is also possible. Furthermore, the present invention can be applied not only to de-energizing falling objects, but also to transferring heavy objects by means of skin trails, in which case a plurality of chains are suspended from a frame above the transfer line in the form of a sash. If the stand is made movable or removable, it can be convenient when not in use.

Effects As detailed above, this invention has the excellent effects of being able to prevent damage to surrounding equipment, improving safety in the working environment, and further preventing the generation of impact noise. play.

[Brief explanation of drawings]

Figure 1 is a side view showing the conventional heavy weight 9-arm equipment, Figure 2
The figure shows Keian Choei embodying this invention. FIG. 3 is a front view, FIG. 4 is a front view of a fourth lower shaft shaft device in another embodiment of the present invention, FIG. 5 is a side view, FIG. 6 is a road body diagram showing a shock absorbing member having a different configuration. Inclined surface 3, rotating drum 6, chain element 8, loose material 9, endless chain 12, inclined chute 23, support rod 28, chain 29, chain curtain 30° Patent applicant Nihon Kokan Co., Ltd. Enomoto Kogyo Co., Ltd. Agent Patent attorney Hironobu Onda

Claims (1)

[Scope of Claims] l A support member provided above a passage path for an object that moves due to inertia or gravity, and a buffer member configured by hanging a plurality of chains in parallel from the support member, the buffer member comprising: A fall impact mitigation device, characterized in that at least the lower end of the member restrains the object and de-energizes it. 2. An inclined surface provided in the passage of an object that moves due to inertia or gravity, a drive shaft provided above the inclined surface that actively rotates, and a buffer member configured by arranging multiple chains in parallel; The buffer member is suspended on a drive shaft (7), and a part of the spear is placed on an inclined surface so that the buffer member rotates as the drive shaft rotates. Fall shock mitigation device. 8. The fall impact mitigation device according to claim 2, wherein the drive shaft is constituted by a prismatic rotating drum. 4. The drop impact mitigation device according to claim 2, wherein the buffer members are arranged in parallel by connecting adjacent chain elements of each chain. 5. The fall impact mitigation device according to claim 2, wherein the buffer members are arranged in parallel by connecting diagonally opposing chain elements of each chain.