JPH0252164A - Method for carrying molten metal by vehicle and truck and foundry ladle - Google Patents

Abstract

PURPOSE:To carry molten metal without moving a foundry ladle on a load carrying platform, allowing the molten metal to be overflowed from the ladle, etc., by mounting, fixing and carrying the foundry ladle storing the molten metal and having an enclosed opening part on the load carrying platform of a carrying vehicle moving on the road. CONSTITUTION:A pair of retaining rings 4, 5 is fixed to the upper surface of the load carrying platform 1 of the vehicle in parallel with the direction traversing the advancing direction and another retaining ring 5 is fixed freely attachably and detachably to a side end part in the U shape. The foundry ladle 20 storing the molten metal and having an enclosed opening part is mounted on the load carrying platform 1 while fork insertion members 9 of a forklift fixed to the bottom surface of the foundry ladle are engaged with the retaining rings 4, 4. Then, clamping devices 8 are caught and clamped between three pairs of locking members 6 and stoppers 7 on the upper part of the ladle 20 and on the upper surface of the load carrying platform 1 to fix the lower part of the foundry ladle 20 by fixing tools 4, 5, the upper part is clamped by a clamping tool 8 on the load carrying platform 1 and, cosequently the foundry ladle does not move or shake on the load carrying platform and the ladle 20 on the platform can be carried safely.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is capable of transporting molten metal such as aluminum through public roads, etc., to remote locations, long-duration transport, and transport on slopes such as slopes. The present invention relates to a method of transporting molten metal using a transport vehicle that operates on roads, such as a truck that can be delivered directly to a user.

[Conventional technology]

It has been conventional practice to transport molten metals such as aluminum within factories using forklifts, etc., but in this case, the ingots are melted in a central melting furnace and then received in a ladle, which is placed adjacent to casting equipment such as die casting. Since the materials are distributed to holding furnaces (hand furnaces), the passage is generally flat and the transportation distance is not long. Therefore, transportation can be carried out safely without requiring special measures for the ladle or its gripping method. During transport, the main body of the ladle is covered to prevent the temperature from dropping during transport, but the pouring spout is usually left open.

Furthermore, as an example of transporting molten metal by vehicle, there is a mixer car that transports molten pig iron tapped from a blast furnace, but since this mixer car runs on tracks laid on the premises of a steelworks, it is necessary to use it at the appropriate time. It cannot be delivered to other locations, has poor mobility, and since it travels on tracks, no special measures are required for containers, etc., and the transportation time is not long, so a drop in the temperature of the molten metal is not a big problem.

[Problems to be solved]

There are problems when melting in a central melting furnace and distributing to each holding furnace. In other words, the centralized melting method is economical for high-volume production of one type of product, but it is uneconomical for the production of multiple types of small quantities, and other small melting furnaces such as crucible furnaces, small melting and holding furnaces, etc. I have no choice but to rely on Installing a concentrated melting furnace and these small melting furnaces is problematic because it requires a large equipment cost. Also, from the viewpoint of furnace maintenance, environmental hygiene, etc., holding furnaces are better because they are smaller, have less oxidation loss of molten metal, and generate less hot air inside the factory.

Therefore, if casting can be performed without installing a central melting furnace, the factory can be rationalized. For this purpose, methods are being researched to distribute molten metal from a factory that specializes in melting aluminum etc. to the site of use, and some have hot water supply systems using pipelines. However, even in this case, the transportation distance is only a few hundred meters at most, and transportation is limited to within the same factory, and like the above-mentioned pig iron mixing truck, it is not possible to deliver to the desired location in a timely manner, resulting in poor mobility. It has been predicted for some time that as transportation distances become longer, factories will be further streamlined. Therefore, for example, it has been envisioned for some time that molten metal can be distributed and used from outside companies, but it has not yet been realized to this day. The reason for this was that it was difficult to prevent the molten metal from cooling and transport it safely.

In other words, when transporting molten metal on general roads using the conventional method,
General roads such as public roads are different from those inside the factory, and there are slopes,
Because there are roads with poor paving conditions that can cause intense vehicle vibrations, difficulties such as spillage of molten metal, overturning of loaded ladles, and solidification of molten metal due to cooling were expected. I couldn't do it.

[Means for solving problems]

The present invention was made in view of the above circumstances, and consists of storing molten metal in a closed ladle, and placing and fixing the ladle with its opening sealed on the bed of a transport vehicle such as a truck that operates on the road. It is characterized by the fact that it can be transported by

One way to fix the ladle is to fix a pair of fixing devices of appropriate length on the upper surface of the vehicle loading platform in parallel with each other at an appropriate distance in a direction transverse to the direction of travel, and also to attach a pair of fixing devices to the loading platform at one end of the vehicle. Another fixture is removably attached to the top surface in a U-shape with the above fixture, and a fork insertion member for a forklift is fixed to the bottom of the ladle, which stores molten metal and has a sealed opening. Engage with the fixture and place it on the loading platform,
A tightening device such as a turnbuckle is latched and tightened between at least three pairs of locking members and stops provided in correspondence with each other on the upper part of the main body of the ladle and the upper surface of the loading platform. The lower part is fixed with a fixing device, and the upper part is tightened onto the loading platform using a tightening device, so there is no risk of it moving on the loading platform or wobbling (allowing for long-distance transportation and sloped transportation. In addition, the tightness does not loosen even when vibrations occur on poorly paved roads, so the ladle on the loading platform can be safely transported on public roads and other roads, and the ladle can be loaded and unloaded extremely quickly. It can be done easily.

In addition, the ladle is a closed type ladle with a sealing device at the receiving and pouring ports, which completely prevents hot water from spilling during transportation.In case of long transportation, a heating device is installed to keep the hot water warm. This prevents the molten metal from solidifying as it cools, and the clamp handle allows the opening and closing of the inlet and pouring inlet to be performed extremely quickly.

〔Example〕

Next, details of the present invention will be explained with reference to figures showing embodiments. In Fig. 1, (1) is a loading platform of a vehicle (truck);
2) is a cylindrical closed type locking device, and (3) is a fixing device for the ladle (2). A pair of fixtures (4), (4) of appropriate length are fixed at appropriate intervals in parallel to the direction across the (
4), whereas the longitudinal fixing device (5)
Attach the bolts (5) so that they form a U-shape with the fixing devices (4), (4) on the loading platform (1) at one end of the fixing devices (4), (4).
°) is removably fixed. As will be described later, the ladle (2) connects the fork insertion members (9), (9) fixed to its bottom with these fixtures (4), (4) and (
5) and placed on the loading platform (1), and after being placed, ring-shaped locking members (6), ( 6) ... and loading platform (1)
The locking rods of the stops (7), (7)... fixed correspondingly on the top (
7'), hook the hook (8°) of a tightening device (8) such as a turnbuckle shown in Fig. 5 and tighten it.

Forklift insertion members (9), (9) are fixed to the bottom of the ladle (2), and the distance between the parallel fixtures (4), (4) is determined by the insertion member (9).
), (9) should be spaced so that they can be inserted by sliding them inside. In addition, the fixture (4) is a U-shaped steel (10) as shown in Figure 3.
The L-shaped steel (11) and flat steel (12) are combined and welded, and the insertion members (9), (9
) can be easily set, but other forms may be used. Furthermore, the removable fixture (5) can have an appropriate cross-sectional shape. As shown in the figure, the fasteners (7) are arranged in a substantially equilateral triangular shape with one of the outer fasteners (5) as the apex, so that one end of the insertion member (9) is fixed after tightening. It is latched to the tool (5) and fixed in a stable state.

As described above, the lower part of the ladle (2) is fixed by the fixing device (3), and the upper part is tightened by the tightening tool (8), the stopper (7), the locking member (6), etc. It can be transported over long distances or on slopes without moving or rattling on the loading platform, and the tightening does not loosen even when vibrations occur on roads with poor paving, so the load can be easily moved on the loading platform. can be safely transported on public roads and other general roads.

Figures 6 to 8 show cross-sectional views of the ladle, where (13) is the outer shell, (14) is the heat insulating material, (15) is the lining refractory material, (
16) is the lid, (17) is the spout, (18) is the pouring spout, (
19) is the small lid of the hot water inlet, and the lid (16) and the ladle body (20)
Each steel skin is connected by fastening (22) the flange portion (21). In addition, the small lid (19) is attached to M (16) with a hinge (23) so that it can be opened and closed, as shown in Figure 7.
On the opposite side are a handle (24) and a forked hook (25).
) is installed, and in response to this! (16) has a screw shaft (2
6) is attached so as to be rotatable outwardly, and in the figure, the screw shaft (26) is latched onto the two prongs of the latching tool (25), and the clamp handle (27) is screwed onto the screw shaft (26). )
The small lid (19) is fastened to the lid (16) by the handle, and the small lid (19) can be opened by loosening the handle (27) and rotating the screw shaft (26) outward.

In FIG. 7, (28) is a heater embedded in the refractory material, and in FIG. 8, (29) is a heater provided in the lid (16). Figure 6 shows a ladle without a heating device, including a main body (20), a lid (16), and a small I! (
19) etc. have the same structure. Also, the pouring port (18) is 1
Although shown as being provided in one location, it may be provided in two locations as shown in FIG.

Figures 9 to 11 show the opening/closing device for the pouring spout (18),
In the figure, (30) is a cast iron pouring nozzle, (31) is a cast iron stopper that fits into the nozzle (30), and the stopper (31) is fixed to the lid (16) or the ladle body (20). An arm (3
The arm (33) is attached to the tip of the ladle body (20) or the support plate (34) fixed to the lid (16).
) is slidably supported on the upper edge of the support plate (34) so that it can rotate, and the stopper (31) is fitted by falling into the slit (34") provided at the end of the support plate (34). It fits into the sprue nozzle (30) and closes the pouring nozzle (30). (34') is the support Fi (
34) A holding part (arm rest) for the arm (33) when the pouring spout (18) is opened at the other end of the upper edge. The base of the arm (33) may be connected to the base shaft (32) by a ball joint or the like so as to be rotatable in the vertical and horizontal directions.

(35) is a toggle clamp device that tightens the stopper (31), and is a toggle clamp device that tightens the stopper (31).
0), the arm (33) fits into the U-shaped holding part (35') at the upper end of the clamp (35), so the handle (35'') of the clamp (35) is moved vertically. By rotating, the stomper (31) can be fitted and crimped onto the nozzle (30), and the nozzle (30) can be opened by performing the opposite operation to the above.The nozzle (30) and the stopper (31) It was found that by making cast iron, it has excellent mechanical strength and can improve durability, as well as draining water easily after pouring and improving sealing performance. Even if there is adhered metal, it can be easily removed.If a ceramic fiber sheet is interposed between the pouring nozzle (30) and the stopper (31), the problem of metal adhesion will be further improved. The degree of protection and complete sealing of the stopper can be increased.

When transporting molten metal, for example, the molten metal pumped from the melting furnace at the supplier's factory is transported from the receiving port (17) of the ladle (2) through the feed vibrator to the ladle (2). 2) After storing it inside, small I! (19), tighten it with the clamp handle (27), and also tighten the spout (19).
8) has a 7 par (31) and a toggle clamp (31).
35) with the handle (35'), the ladle (
Since the opening of 2) is quickly and completely sealed, this ladle (2) is loaded onto the truck bed (1) via the insertion members (9), (9) using a forklift, and the fixing device (3) ) and fasteners (8), it can be fixed and transported to the factory where it will be used.

After arriving at the factory where it will be used, tighten the ladle (2) (6).

(7) and (8), lower the ladle (2) using a forklift that can tilt left and right, remove the stopper (31), open the pouring spout (18), and remove it using a forklift. By tilting the pot (2), the molten metal can be immediately poured into a holding furnace or directly into a mold. Therefore, the supplier side can deliver molten metal in a timely manner according to the demand of the factory where it is used. In this case, since the fixture (5) is detachable, it is convenient to insert the fork of the forklift from either the left or right side of the loading platform (1) and lower the ladle (2). In addition, the fixture (5) is replaced by a parallel fixture (4),
If the ladle (4) can be mounted on either the left or right side, it will be convenient to load the ladle (2) using a forklift from either side.

[Example 1] (1) Fixing device on the loading platform A fixing device made by welding 70 x 150 U-shaped steel (10), 45 x 45 double-shaped steel (11) and 50 K flat steel (12) as shown in Figure 3 ( 4), (4) are fixed parallel to each other at appropriate intervals (4 degrees) in a direction transverse to the direction of vehicle movement, further welded to the surface of the loading platform (1) if necessary, and a fixing device ( 5) with bolts (5″) and attach the fixing device (
3), and fasteners (7) were fixed to the outside thereof such that one of the fasteners was located outside of the fixture (5). Locking rod (7
′), a round bar with a diameter of 21 cm was used.

(2) Ladle The ladle is formed into a cylindrical shape using an iron plate approximately 6++ m thick.
13), and a reinforcing plate was provided thereon as appropriate. The inner refractory material is M (16), small M (19) and lightweight castable.
A heat insulating boat was used as the body heat insulating material (14) of the main body (20), and a corrosion-resistant castable containing aluminoboric acid (manufactured by Algaref AC35 Memoto Crucible Co., Ltd.) was used as the lining refractory material (15). In addition, a large fired block (Algalef AC35 manufactured by Nippon Crucible Co., Ltd.) was fitted into the bottom to withstand shock during reception. The dimensions of the ladle are approximately 1.100mm in outer diameter and height! , 200on, inner diameter 8
It had 60 barrels and a depth of 900mm, and held approximately 900kg of molten aluminum, and the water surface was approximately 700mm high. The weight of the ladle including the contents was approximately 2.300 kg.

(3) Approximately 900 kg of molten aluminum at 730'C was drained from the fixed force method inlet (17), and the sealed ladle (2) was placed and fixed on the trunk loading platform (1) using a forklift. . Two ladles were loaded onto one truck.

(4) Transportation method It took approximately 2 hours to transfer the molten metal from the receiving molten metal to the melting furnace where it will be used. On the way, we drove on a general road with a slope, but we were able to transport it safely. The temperature of the molten metal after 2 hours is approximately 650°
It was C.

(5) Results of use There were no abnormalities inside the ladle, and it was possible to use it for the next transportation.

[Example 2] (1) The fixing device on the loading platform was the same as in Example 1.

(2) As shown in Figure 7, the main body (20) is equipped with an electric heater (
28) was used. The electric heater (28) uses a Kanthal wire of 4.5 mm diameter for the heating element, uses a mullite tube for the support rod of the heating element, and molds these with ceramic fiber to fix the Kanthal wire and to support the heating element. Sufficient insulation on the back side. An iron plate was installed in front of the heating element to prevent contact between the heating element and the lining material. A Kanthal wire with a diameter of 1 am was used as the terminal wire. The electric heater was installed around the entire circumference from the bottom of the side wall of the main body to about 1/3 of the height. Power was provided by a generator installed in the trunk.

(3) The fixing method was the same as in Example 1.

(4) Transportation method During transportation, the product was heated with electricity. The time from receiving the melt to transferring it to the melting furnace where it will be used was approximately 6 hours. Along the way, the vehicle passed through roads with slopes and curves, allowing it to be safely transported to remote locations. The receiving temperature was 730°C, and the molten metal temperature after 6 hours was about 650°C.

[Example 3] (1) The fixing device on the loading platform was the same as in the example.

(2) As shown in Figure 8, the lid (16) is equipped with a silicon carbide heating element (
Electric heater (29) consisting of 36) and protection tube (37)
A ladle (2) was used. For the protection tube (37), MT351 made of graphite silicon carbide and manufactured by Nippon Crucible Co., Ltd. was used. The length of the protection tube was set so that it almost touched the scene. Since this protective tube is made of a refractory material that is resistant to corrosion against molten aluminum, it could be used even if the tip was slightly immersed in the molten metal.

(3) The fixing method was the same as in Example 1.

(4) The transportation method was the same as in Example 2, and the material could be transported safely.

〔Effect of the invention〕

As described above, the present invention can deliver molten metal to the user in a timely manner, so the user can save energy, improve yield, and reduce melting costs.
In addition, since the supplier side can deliver the product in a molten state, it saves the labor of casting into ingots, has the effect of energy saving, and can reduce product inventory, which is extremely effective especially in aluminum recycling factories. can be used effectively. Also, during transportation, the bottom of the ladle (2) with its opening sealed as described above is fixed on the loading platform (1) of the vehicle with the fixing device (3), and the top of the ladle (2) is secured with the tightening device (3).
8), the fasteners (7) and locking members (6), etc., prevent it from moving or rattling on the loading platform (1), and prevent hot water from being caused by tilting or vibration of the loading platform during transportation. It has the advantage that there is no risk of spillage or the like, and molten metal can be transported extremely safely on public roads.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a front view of a ladle fixed on a wheel bed, the following is an enlarged view, FIG. 2 is a plan view of the fixing device, and FIG. 3 is a fixing device. 4 is a perspective view of the fastener, FIG. 5 is a front view of the fastening device, FIG. 6 is a longitudinal sectional front view showing one example of the ladle, and FIG. 7 is another example of the ladle. 8 is a vertical sectional front view showing still another example of the ladle, FIG. 9 is a front view showing a stopper opening/closing device for the pouring spout, FIG. 10 is a plan view of the same, and FIG. 11 is a stopper and It is a front view of a nozzle. (1)...Vehicle loading platform, (2)...Ladle, (3)
...fixing device, (4), (5)...fixing tool, (6)...locking member, (7)...stopper, (8
)...Tightening tool, (9)...Fork insertion member (13)...Ladle shell, (14)...Insulating material,
(15)... Lining fireproof material, (16)... Lid, (1
7)...Inlet, (18)...Pouring port, (1
9)...Small lid of the hot water inlet, (20)...Ladle body, (2
3)...Hinge, (24)...Handle, (25
)...Latching tool, (26)...Screw shaft, (27
)...Clamp handle, (28), (29).
...Heater (30)...Pouring nozzle, (31)...
... Stopper (32) ... Base shaft, (33)
... Arm, (34) ... Support plate, (35)
...Toggle clamp device, (35'')...Clamp handle, (36)...Silicon carbide heating element, (37)...Protection tube. Patent applicant: Nippon Crucible Co., Ltd. Figure 1 Figure 3 Figure 2 Figure 4 Figure 7' Figure 5 Figure 6 Figure 7 Figure 9 Figure 10 Figure 8 Figure 11

Claims (1)

[Scope of Claims] 1. A method for transporting molten metal, characterized in that a ladle containing molten metal and having a sealed opening is placed and fixed on the loading platform of a transport vehicle operating on a road. . 2. Fix a pair of fixing devices (4), (4) of appropriate length on the upper surface of the truck bed (1) in parallel at an appropriate distance in a direction transverse to the direction of travel, and fix one side end of loading platform (
1) Attach the fixing device (5) to the above fixing device (4), (4) on the top surface.
A member for inserting a fork of a forklift (9), (9), which is removably attached to form a U-shape and has a ladle (2) fixed to the bottom of which stores molten metal and has a sealed opening.
are engaged with the fixing devices (4), (4) and (5) and placed on the loading platform (1), so that the upper part of the body of the ladle (2) corresponds to the upper surface of the loading platform (1), respectively. A fastener (8) is latched and tightened between at least three pairs of locking members (6) and stops (7) provided in the melting machine, and the ladle (2) is transported by this truck. How to transport metal. 3. Place a pair of fixtures (4) of appropriate length on the loading platform (1).
4) are fixed in parallel with each other at appropriate intervals so that the fork insertion members (9) on the bottom of the closed ladle (2) with molten metal stored therein are engaged in a direction transverse to the direction of travel of the vehicle. At the same time, on the upper surface of the loading platform (1) at one end thereof, a fixing device (5) for securing the ends of the fork insertion members (9), (9) is attached to the fixing device (4), (4
) and the fixing device (3).
), and has fixing devices (3) and fasteners (7) for tightening the ladle (2) fixedly installed in at least three places on the outer loading platform (1). 4. The inlet (17) and pouring inlet (18) each have a sealing device, the locking members (6) for tightening provided at least three places on the top of the main body (20), and the forklift provided at the bottom. A ladle for transporting molten metal equipped with a fork insertion member (9).