JPH0138697B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention enables quick, safe and efficient processing of multiple high temperature billets.
The present invention relates to a transportation device that can be easily loaded and unloaded, and at the same time can be transported, loaded, and unloaded with less radiation (heat loss) during transportation. Conventional methods for transporting billets include transporting billets one by one on a trolley or stacking them in multiple stages. In particular, in the stacking method, if the billet is at a low temperature, a square piece of steel or a wooden billet is placed between the upper and lower billets. is placed on the lower billet by hand or the like, and the upper billet is stacked on top of it. When the billet is at room temperature or relatively low temperature, lifting magnets can be used to load and unload the billet.
Lifting magnets cannot be used for billets at high temperatures, for example around 1000 degrees Celsius, due to their nature. In recent years, from the standpoint of energy conservation, it has become desirable to transfer or transport billets from the billet casting process to rolling and other processing processes at a high temperature of 1000°C or higher. When transporting billets using a crane or roller conveyor, billets are transported in small quantities, which results in large heat dissipation, resulting in a significant drop in temperature during transport, and has drawbacks such as high equipment costs and running costs. In addition, trucks are used for transportation to load and transport high-temperature billets.
When loading and unloading, there are restrictions on the number, capacity, and arrangement of overhead cranes in the unloading and receiving yards, and the shape and performance of each crane's lifting equipment is also restricted depending on the purpose. There is a demand to reduce heat loss as much as possible by cutting down on working time, but in the past, a heat insulating plate was installed on the loading platform of a normal truck, a pillow bar was placed on top, and a high-temperature billet was placed on a C-shaped hoist or a tong-shaped hoist. The first layer is loaded using a crane equipped with a crane, then the pillow bars for the second layer are transported and placed on the high temperature billets of the first layer, and then the high temperature billets of the second layer are transported and loaded. Then, the same procedure is repeated to complete the loading of high-temperature billets up to the third layer. On the other hand, loading and unloading was a normal loading and unloading operation performed in reverse order to the above, but since the area around the high temperature billet was open, the temperature dropped significantly during the entire operation time, and due to the dissipation of high heat, the truck Tires are subject to heavy wear and tear, workers are forced to work in hot conditions, and the required time is long.
It was unsuitable for conveying high temperature billets in the temperature range of ℃. In view of this, the present invention aims to transport billets obtained in a casting process or a heating process by minimizing the temperature drop and allowing easy loading and unloading. The present invention will be explained below based on illustrated embodiments. In the diagram, 1 is the predetermined quantity (tons)
This trolley is capable of transporting billets at one time.The lower surface of the trolley 1 is equipped with wheels WW, and the upper surface is covered with fireproof bricks etc. to protect the trolley from high temperature billets. The vehicle is either towed by a truck or other towing vehicle, or equipped with an engine to make it self-propelled, that is, a truck. In addition, the high-temperature billets loaded on the trolley 1 are housed in boxes to minimize heat loss during loading, transport, and unloading.
This is done by providing a box-shaped container body 2 with an open top and set on a trolley 1, a lid 3 that can freely open and close the top opening and cover the container, and a container on the trolley. This container body 2 has a box shape with a heat-insulating and heat-retaining iron shell exterior, and has vertical slits 2a, 2a formed at both ends of opposite end walls, and has high-temperature parts stacked inside the container body. At a position where the billet can be hung with a C-shaped hanging tool, at least an opening 2b, 2b is formed in each side wall in a vertical direction from the upper end to approximately the lower end, and with a width sufficient to allow the C-shaped hanging tool to be inserted. 2
Each opening 2b is provided with a door 3, and the door 4 is opened and closed by a cylinder 9 provided inside the container body or on the trolley. 4 are designed to open and close at the same time. At the inner bottom of the container body 1, there is a C-shaped hanging tool, and a tong-shaped hanging tool is installed at a position that does not hinder the hanging and unloading of high-temperature billets, and a C-shaped hanging tool is installed below the lowest high-temperature billet. ,
A required distance is provided between the inner bottom surface of the container and the lowest billet so that a tong-shaped hanging tool etc. can be inserted smoothly, and the fixed pillow 5 is placed in the direction intersecting the high temperature billet so that the lowest billet can be stably supported. Arrange two or three or more. This fixed pillow 5 may be fixed at a predetermined position on the bottom surface of the container main body. In addition, the lid 3 has an iron shell exterior for heat insulation and heat retention, and a flat part 3a is provided on the upper surface of the center part to allow the lids 3, 3 to be attached and removed by a magnetic hanging tool M, and a separate C-shaped hanging tool 6 or Two pairs of approximately T-shaped hanging ears 8 are provided at locations that match the spacing between the claws 6a, 7a of the tong-shaped hanging tool 7 and allow the lid 3 to be lifted stably. The work of inserting the claw 6a or 7a of the equipped hanging tool 6 or 7 is facilitated. Further, a pair of movable pillow devices K, K are arranged outside both end walls of the container body. This movable pillow device K is a first stage (lowest stage) stacked high temperature billet G1.
A movable pillow 10 disposed above, a movable pillow 11 disposed on the second stage high-temperature billet G2, levers 12, 13 that move the movable pillows 10, 11, and cylinders 14, 15 that swing the levers. Consists of. The movable pillows 10 and 11 both have a substantially square cross section, and the length of one side is the distance between the high-temperature billets G1 and G2 stacked via the movable pillows and G2.
2 and G3, so that the claws 6a or 7a of a C-shaped hanging tool or a tong-shaped hanging tool can be inserted into the gap between the movable pillows 10 and 11. , 13 are pivotally connected, and the lower parts of the levers 12, 13 are fixed to the outer wall surface of the container body 2 or a part of the trolley with shafts 12a, 13.
The cylinders 14, 15 are pivotally connected via a, and the ends of the rods of the cylinders 14, 15 provided on the truck or the container body are engaged with brackets protruding from a part of the lower end or each lever. With this operation, the movable pillows 10 and 11 are made to swing from the position shown in FIG. 1 to the position shown in FIG. 3. And a lever 1 having movable pillows 10 and 11 at its tip
2 and 13 are inserted into the container body shown in FIG. 1 from the state shown in FIG. Slits 2
A, the movable pillow and lever can be easily inserted into the container body. In order to minimize heat dissipation at this time, the width of the vertical slit 2a may be determined as the minimum width that allows the two levers 12, 13 to swing independently and without contacting each other. In order to prevent the levers 12 and 13 from colliding with each other, this can be easily done by making the lengths of the movable pillows 10 and 11 slightly different from each other as shown in FIG. It should be noted that the movable pillows 10 and 10 and 11 and 11 of the pair of movable pillow devices K and K provided on the outside of both end walls of the container body, which act in cooperation with each other, are designed to swing in synchronization with each other. and 11
are operated singly and selectively. The cylinders for swinging the movable pillow may be operated by air pressure, oil pressure, or other fluid pressure, or may be an electric cylinder. Reference numerals 16 and 17 designate operating levers for the cylinders 14 and 15. The entire structure and apparatus described above has a connection end for the drive air source close to the truck cab, and is assembled together on a common cradle or bed, such that it can be mounted on a common truck bed. Create a shape that can be mounted within the range of . The apparatus constructed as described above is used for conveying not only high-temperature billets but also ordinary billets, and its operation is carried out as follows. First, in the loading operation, when using the magnetic hanger M installed on the crane, the load is mainly for cold or hot slabs, so it is excluded from this explanation. Therefore, C-type hoists are used to transport and load high-temperature billets. That is, as shown in FIG. 1, the crane operator operates the C-shaped lifting device 6 to suspend the lid 3, and after placing it in a designated location, transports the high-temperature billet to a container. On the other hand, truck drivers become ground workers (hereinafter simply referred to as workers).
An air source is connected to the connecting end, the doors 4, 4 of the truck on the approaching side of the crane are selected, and the cylinder 9 is operated by the operating valve to open the two doors. At this time, there is no billet in the container, and the fixed pillow 9 is placed in the third position.
The operation valve is operated to position the main body 2 in the avoidance position as shown in the figure. The first layer of high-temperature billet G1 is the claw 6a of the C-shaped hanging tool.
After loading onto the fixed pillow 5 from above the container main body 2 as shown in FIG.
The mold hanger is lowered a little further, and then the space formed by the opened doors 4 is evacuated outside the vehicle in the direction of the arrow. Next, the operator operates the operating valve to move the movable pillow 10 supporting the second layer high temperature billet G2 from the retracted position to the first layer billet G in the direction of the arrow shown in FIG.
Rotate it to the upper support position. The crane operator transports the second layer billet G2, stores it in the container and retreats using the same procedure as described above. The operator moves the movable pillow 11 supporting the third layer billet G3 to the second layer billet G using the same means as described above.
After storing the third layer of billet G3 in the container, the crane operator transports the lid 3 using a crane equipped with a C-type hoist or a magnetic hoist, places it on top of the container, and loads it. Finish your work.
The worker removes the air source and becomes a truck driver to transport the hot slabs to the next factory. Next, loading and unloading will be explained. The cranes used for loading and unloading are mainly equipped with tong-type hangers 7 and magnet hangers M, but of course C-type hangers can also be used.
Although the magnetic hanger is also used for adsorption and desorption of the lid 3, low-temperature or room-temperature slabs, and transportation within the yard, this example will mainly explain loading and unloading operations using the tong-type hanger. As shown in FIG. 1, the lid 3 is lifted and removed using a tong-type lifting device. Of course, other hanging devices can also be used. The tong hanger then approaches the container. Meanwhile, the operator connects an air source, either built into the vehicle or from outside, to the connection end. As shown in the example on the right side of Figure 3,
The crane driver widens the spacing between the claws 7a of the tong-type lifting tool and places the claws 7a in the space formed between both ends of the loaded billet and the container body so that the billet can be narrowed.
After lowering the billet and positioning it between the third and second layer billets, the spacing between the claws 7a is narrowed, and the third layer billet is lifted and transported to a predetermined position. In the meantime, the operator immediately operates the operating valve to position the movable pillow 10 at the pillow retracted position outside the box. Then, using the same means as described above, the billets of the second layer and then the first layer are worked on in this order to complete the transportation work. At this time, the movable pillow bars 10 and 11 are in the retracted position outside the box, but there is no problem in attaching the lid 3, so they can be placed over the container using a magnetic hanger, a C-type hanger, or a tong-type hanger. Finish loading and unloading. The operator removes the air source and returns to transporting the hot slab. Next, a table comparing the working time and temperature drop according to the present invention with the conventional method is shown.

[Table] According to the present invention, the work time for loading and unloading high-temperature billets can be significantly shortened, and since the high-temperature billets are stacked inside a lid-like container body that can be opened and closed, the work time can be reduced. This, combined with the shortening of the billet, cuts off contact with the outside air, which significantly reduces the temperature drop during loading, transport, and unloading.In addition, the amount of heat radiated to the surrounding area is small, allowing workers to work safely. In addition to this, the wear and tear on the transport vehicle is extremely reduced. Additional relationship Original patent application (Japanese Patent Publication No. 61-20455 (Patent No. 1356320
No. 2)) is a system in which high-temperature billets are stacked on a trolley and transported via a movable pillow using a cylinder, but the present invention has a C-shaped hanging tool or a tong-shaped hanging tool on this trolley. This container is equipped with a lidded container body that can be used to load and unload billets, and is designed to isolate billets from the outside air and prevent temperature drops.

[Brief explanation of drawings]

Figure 1 is a vertical cross-sectional view of the whole, Figure 2 is Figure 1 A-
3 is a sectional view taken along the line A, FIG. 3 is an explanatory view of the work during loading and unloading of billets, and FIG. 4 is a sectional view taken along the line B--B in FIG. 3. 1... Cart, 2... Container body, 2a... Vertical slit, 2b... Opening, 3... Lid, 4...
Door, 5...Fixed pillow, 6...C-shaped hanging tool, 7...Tong-shaped hanging tool, 6a, 7a...Claw, 8... Hanging ear, 9,
14, 15... Cylinder, 10, 11... Movable pillow, 10a, 11a... Axis, 12, 13... Lever, 12a, 13a... Fixed shaft, 16, 17...
Operation lever, G1, G2, G3...high temperature billet, M...magnetic hanger, W...wheel.

Claims (1)

[Claims] 1. Movable pillow devices for stacking billets are provided at the front and rear ends of a self-propelled or towed trolley, facing each other, and the movable pillows are swung according to the stages of billets to be stacked to create a desired spacing between each stage of billets. In this device, a container body is installed to surround billets stacked on a trolley, and a crane is operated on the top of the container body. In addition, the opposite end wall of the main body has a vertical slit through which a lever is inserted to allow the movable pillow to move in and out of the container body when the movable pillow swings, and the side wall has a cylinder that opens and closes the lid. 1. A high-temperature billet transporting device, characterized in that it has an opening for inserting a C-shaped hanging tool, which is equipped with a door for inserting a C-shaped hanging tool.