JPH07251925A - Equipment for loading and unloading heavy goods - Google Patents

Abstract

PURPOSE:To improve usefulness in both terms of spaces and facilities and to surely dealt with big loads of heavy articles by employing a rational mechanism. CONSTITUTION:Alluminum bullions 20 mounted on a truck 2 are lifted together with the truck 2 from the bottom part and supported by a second supporting arm 13 capable of uniformly supporting these in a plurality of spots in an longitudinal direction when these are fed in and fed out, and moved back and forth on a carrying base 10 via a first supporting arm 12 in this state, and this base 10 independently runs between a preheating furnace 3 and a melting furnace 5. The pusher 14 of a driving part 15 is actuated in the feeding part of the melting furnace 5 and the alluminum bullions 20 mounted on the truck 2 are pushed and fed into the furnace on the truck 2 itself. Thus, not only heavy articles can be supported and carried in their stable state even when the long second supporting arm 13 is employed, but also turning over of a carrying-in/ discharging device can be prevented and bending of the middle part of the supporting arm can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic carrying-in / out apparatus for automatically carrying and loading heavy objects such as aluminum ingots, mother alloys, and aluminum scraps to processing units such as blast furnaces and aggregators.

[0002]

2. Description of the Related Art Heretofore, there have been proposed several conveying devices designed to sufficiently withstand the large weight of raw materials of various metals when they are extracted and put into a heating furnace. For example, in the workpiece transfer device for a heat treatment furnace disclosed in Japanese Patent Application Laid-Open No. 4-24485, an upper surface of a carriage that can travel in a direction away from and in contact with an extraction inlet of the heat treatment furnace is directed toward the front of the carriage. A projecting beam that can be inserted into the furnace is supported in a vertically movable manner, and the tip of the carrier beam that is horizontally inserted in the furnace is supported from below from outside the furnace by a pedestal that can be raised and lowered. There is. When the object to be processed is placed on the carrier beam, the carrier beam is preliminarily set higher than the height of the hearth provided in the furnace, the carrier beam is inserted through the furnace, and the tip portion thereof is inserted. Is supported from below by the pedestal. Then, the object to be processed is moved by the drive mechanism provided on the carrier beam and loaded into the furnace, and the elevator means for the carrier beam on the carriage and the elevator means for the pedestal are synchronized with each other from the furnace floor surface. It descends to a low position and places the object to be processed on the hearth. When extracting the object to be processed, the carrier beam is inserted into the furnace at a height lower than the hearth in advance,
By synchronously raising the carrier beam and the pedestal, the object to be processed is lifted from the hearth, and then the object to be processed is moved to the upper part of the carriage by the drive mechanism of the carrier beam.

[0003]

However, in the object transfer device for the heat treatment furnace disclosed in the above publication, the elevating means is provided on the side of the heat treatment furnace opposite to the object input port. It is necessary to install a pedestal equipped with, which is extremely disadvantageous in terms of both space and equipment. Further, when the object to be processed is moved on the long transport beam, the carrier beam supported by two points, that is, the support portion on the trolley and the pedestal must bear a large weight of the object to be treated, Unless the rigidity for that purpose is secured, there is a problem that the intermediate portion of the carrier beam is bent due to the weight of the object to be processed.

The present invention has been made to solve the above-mentioned problems, and its purpose is to adopt a rational mechanism, which is advantageous in terms of both space and equipment, and can be applied to a large weight of an object to be processed. An object of the present invention is to provide a carry-in / carry-out device having a structure capable of reliably withstanding.

[0005]

The above object is to carry out a pallet, which is a main structure of the present invention, on which a heavy object is loaded, and which stands by at a predetermined portion, and is carried to the front of the heavy object processing section, and on the pallet. Is a device for loading and unloading the heavy object into the processing section, wherein the predetermined portion and the input port of the processing section are located in substantially the same vertical plane, and a transport path is provided between them. And a pair of left and right first support arms that are arranged at intervals to support the pallets from below and that reciprocate on the carrier in a direction orthogonal to the transport path. A pair of left and right second support arms that can be raised and lowered at a plurality of positions in the longitudinal direction by elevating means arranged on the left and right first support arms, and the material processing unit of each first support arm. And the weight on the pallet, which is coupled between the ends on the distant side Is accomplished by loading and unloading device of heavy, characterized in that it comprises a said processing extruding the chamber pusher, made has various control driving means driving unit.

According to a preferred embodiment, the elevating means has a plurality of protrusions having an inclined surface in the longitudinal direction on the upper surface of the first supporting arm, and The lower surface has a plurality of moving wheels corresponding to each of the protrusions,
The end of the second support arm on the drive unit side is connected to a cylinder fixed to the first support arm and extending in the longitudinal direction through a link mechanism, or an upper surface of the first support arm. The lower surface of the second support arm is connected by a plurality of cylinders that extend and contract in synchronization with each other vertically arranged at a predetermined interval in the length direction, and the first support arm is provided in the drive unit. The control drive means is controlled and driven in the direction orthogonal to the transport path, and the pusher is timing driven by the cylinder.

[0007]

When the carry-in / carry-out device of the present invention stops at the front of the pallet for loading a heavy object and waiting at a predetermined portion, the first support arm waiting on the carrier is driven by the control drive means incorporated in the drive unit. , The second support arm and the drive unit are advanced toward the pallet. At this time, the front end portion of the first support arm continues to move forward on the connecting member that connects the front end of the carrier and the pallet standby position. When the tip end portion of the first support arm crosses the connecting member, the pair of left and right second support arms are inserted into the left and right lower surfaces of the pallet waiting at the pallet standby position. Then, the elevating means provided on the first support arm is activated to evenly lift the second support arm while supporting the whole of the second support arm at a plurality of positions, and lifts the pallet upward while holding a heavy load from the left and right.

Then, the control drive means incorporated in the drive unit operates in the reverse direction to drive the first support arm in the reverse direction, and
While the pallet is lifted by the support arm, the pallet is linearly retracted while being guided by the guide member and stopped at a predetermined position. In this way, when the pallet loaded with heavy objects is carried out from the predetermined portion onto the carrier, the control drive means then starts to move the carrier along the rail to the front surface of the adjacent processing unit. When the carrier is stopped in front of the processing unit, the above-mentioned control driving means incorporated in the driving unit is actuated again to direct the first supporting arm together with the second supporting arm and the driving unit to the heavy load port of the processing unit. And moves forward, and the tip of the second support arm reaches the inside of the input port and stops. Here, the operating means incorporated in the drive unit operates to extend the pusher forward, push out the heavy load loaded on the pallet from the rear to the front, and load the same heavy load into the processing unit.

When the loading of the heavy object is completed, the first supporting arm moves backward on the carrier with the second supporting arm supporting the empty pallet, and the first supporting arm reaches a predetermined position and stops.
Then, the carrier runs along the rails to the pallet discharging section. When the carrier reaches the front of the pallet discharging unit and stops, the first support arm on the carrier moves into the pallet storage area of the pallet discharging unit. At this time, the empty pallet is still lifted by the second support arm, and the pallet is also floating from the placement surface of the storage area. When the pallet reaches above the placing surface, the forward movement of the first support arm is stopped, and the elevating means equipped on the first support arm is activated to lower the second support horizontally to release the pallet support. At the same time, the pallet is transferred onto the pallet mounting surface. Then, when the first support arm starts to retreat and returns to the predetermined position of the carrier, the carrier again travels on the rail to the front surface of the original predetermined position and waits for the next heavy load at the standby position. The above-mentioned carry-out operation is performed. By repeating the above operation procedure, automatic loading / unloading of heavy objects is continuously performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A typical embodiment of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows an embodiment in which the carry-in / carry-out device of the present invention is applied to carry out an aluminum metal preheated by a preheating furnace and to load it into a melting furnace in the next step. The aforementioned preheating process has been widely adopted in recent years in order to reduce the fuel consumption rate in the melting process. FIG. 2 is an explanatory view of a loading / unloading procedure by the device of the present invention in which the metal passing through the preheating process is carried out together with the dolly, only the metal is put into the melting process, and then the empty dolly is transferred to the yard of the dolly. Here, the trolley | bogie corresponds to the pallet in this invention.

In these figures, reference numeral 1 denotes a traveling path of a trolley 2, and the trolley traveling path 1 connects the inside of a tunnel-shaped preheating furnace 3 and a trolley yard 4, and is shown in the middle thereof. A bullion loading section for the trolley 2 is omitted. The end portion 1a of the traveling path 1 extending to the exit side of the preheating furnace 3 and the end portion 1b of the bogie storage side 4 on the bogie transfer side share almost the same vertical plane. Both ends 1
A melting furnace 5 is disposed between the melting points a and 1b, and a metal injection port 5a of the melting furnace 5 shares the same vertical plane with both ends 1a and 1b of the traveling path 1.

Then, the both end portions 1a of the carriage running path 1 are
Two rails 6 are laid in front of the metal injection port 1a of the melting furnace 5 and the both ends 1a, 1b and the metal injection port 5a. On the rail 6, a carrier table 10 made of a metal rectangular plate material, which is a main part of the present invention, is arranged so that it can travel on the rail 6.
According to the illustrated example, the carrier 10 has wheels 10a on its lower surface, and is controlled and driven on the rail 6 by a control driving means (not shown).

A U-shaped frame-shaped guide member 10b is provided on the upper surface of the transfer table 10 along the left and right long sides and the short side on the side separated from the preheating furnace 3. In addition, a plate-shaped connecting member 11 that is hinged to rotate between vertical and horizontal is provided at the end edge of the carrier 10 that faces the preheating furnace 3. A spring member (not shown) is attached to the hinge portion, and constantly urges the connecting member 11 to the upright posture with the hinge portion as the base end. The length of the connecting member 11 is sufficient to connect the end of the carrier 10 to the ends 1a and 1b of the carriage running path 1 and the metal injection port 5a of the melting furnace 5. It is set.
That is, when the connecting member 11 is in a horizontal posture, the tip end portions thereof are set to have a length such that they can be placed on the end portions 1a and 1b of the truck running path 1 and the metal injection port 5a of the melting furnace 5, respectively. ing.

Therefore, the end portion 1a of the carriage running path 1 is
1b and the metal charging port 5a of the melting furnace 5 have mounting surfaces 1a ', 1b', 5 for mounting the tips of the connecting members 11.
a 'are formed respectively. On the other hand, the portions other than the placing surfaces 1a 'and 1b' of the bogie traveling path 1 described above have a convex cross section, and the highest plane portion thereof constitutes the bogie traveling surface 1c, and the left and right steps are interposed. The height of the low flat surface portion 1d is set so as to be on the same plane when the connecting member 11 is in the horizontal posture. The metal loading surface 2b of the trolley 2 is the main body 2
The flange portion 2b 'is configured to be wider to the left and right than a.

Inside the U-shaped frame-shaped guide member 10b projectingly provided on the upper surface of the carrier 10, a pair of left and right first support arms 12, which is another main component of the present invention, is also provided. A pair of second support arms 13 and a pusher 14 for pushing the aluminum ingot loaded on the carriage 2 into the melting furnace 5 and a drive unit 15 having various control drive means (not shown) are installed. There is.

The first support arms 12 on the left and right sides are the carriage running path 1
Are arranged parallel to the longitudinal direction of the carrier table 10 at intervals equal to the interval between the low flat surface portions 1d via the left and right stepped portions,
A plurality of wheels 12a are provided on the lower surface of the plurality of wheels 12a, and among the plurality of wheels 12a, a wheel 12a 'arranged at an end of the drive unit 15 on the installation side is housed in the drive unit 15 (not shown). It is connected to a well-known control drive motor through a suitable transmission mechanism such as a gear or a chain. Therefore, the left and right first support arms 12 are allowed to reciprocate on the carrier 10 in a direction orthogonal to the carrier direction, and also to reciprocate on the plane portion 1d of the carriage running path 1. ing. A plurality of protrusions 12b are provided on the upper surface of each first support arm 12 at predetermined intervals in the longitudinal direction. In the illustrated example, the number of the protrusions 12b is four, and each of them has an inclined surface 12b 'that climbs forward from the drive wheel 12a' (to the left in FIG. 1).

The left and right second support arms 13 are placed on the upper surface of the first support arm 12, respectively, and the rear ends of the fluid pressure cylinders 16 fixed to the rear end portions of the first support arms 12 are horizontal. Linked to the moving rod end. Also,
The distance between the left and right second support arms 13 is set so as to support the left and right flange portions 2b 'of the carriage 2 from below, respectively. Further, a plurality of rollers 13a are provided on the lower surface of each second support arm 13 at predetermined intervals in the longitudinal direction. According to this embodiment, one second support arm 13 has four
The rollers 13a are arranged and are set at the same intervals as the four protrusions 12b protruding from the upper surface of the first support arm 12.

The drive unit 15 is fixedly provided so as to be sandwiched between the rear ends of the left and right first support arms 12, and a control drive means such as a servo motor (not shown) is provided inside the housing 15a. ing. The pusher 14 is installed on the front surface (front side in FIG. 1) of the drive unit 15. The pusher 14 is installed at a position where the height of the upper surface of the dolly 2 when the dolly 2 is lifted by the second support arm 13 becomes substantially equal to the height of the lower surface of the pusher 14, and the inside of the housing 15 a of the drive unit 15 is located. It moves forward and backward horizontally by the operation of a fluid pressure cylinder (not shown).

Now, the carrying-in / carrying-out procedure shown in FIG. 2 by the apparatus for carrying-in / carrying-out the aluminum ingot according to the present embodiment configured as described above will be described in detail with reference to FIGS. FIG. 3 shows the positional relationship with the loading / unloading device of the present invention when the aluminum ingot 20 loaded on the carriage 2 reaches the end of the traveling path 1 through the preheating furnace 3. At this point, the loading / unloading device of the present invention is in a position facing the trolley 2 loaded with the aluminum base metal 20. At this time, the first and second support arms 12 on the carrier 10,
13 and the drive unit 15 are located at the rearmost portion (right side in the figure), and the pusher 14 of the drive unit 15 is also in the contracted state.

Here, the control drive means (not shown) incorporated in the drive unit 15 is activated to drive the drive wheel 12a 'at the rearmost portion of the first support arm 12, and the second support arm 13 and the drive unit 1 are driven.
The vehicle 5 and 5 are moved forward. During this forward movement, the tip end portion of the first support arm 12 pushes the connecting member 11 hinged to the tip end of the carrier table 10 to rotate horizontally against the spring force, and the tip end thereof is placed on the traveling path 1. Supported by the placing surface 1a ', the first support arm 12 continues to move forward. First
When the tip end of the support arm 12 crosses the connecting member 11, the left and right second support arms 13 are inserted into the lower surfaces of the left and right flange portions 2b 'of the carriage 2 waiting on the traveling path 1, and the solid line in FIG. The state shown in. Next, the left and right fluid pressure cylinders 16 fixed to the rear end portion of the first support arm 12 operate to push the second support arm 13 forward (to the left in FIG. 4). At this time,
At the same time as the second support arm 13 moves forward, a plurality of rollers 13a provided on the lower surface rolls on the inclined surface 12b 'projecting on the upper surface of the first support arm 12 to support the second support due to the degree of freedom of the link mechanism. The entire arm 13 rises evenly, and as shown by phantom lines in FIG. 4, lifts the left and right flange portions 2b 'of the carriage 2 upward while supporting them from below.

Next, the control drive means (not shown) incorporated in the drive unit 15 operates in the reverse direction to reversely drive the drive wheels 12a 'of the first support arm 12, and the second support arm 13 causes the aluminum base metal 20 to move. Transport platform 10 with the dolly 2 loaded with the lifted
When the upper part of the guide member 10b linearly retreats while being guided by the left and right guide members 10b and approaches the rear end edge of the guide member 10b, a sensor (not shown) operates there to stop the driving of the control drive means. The first support arm 12 retracts, and the wheels 12a provided at the tip end of the first support arm 12 pass through the connecting member 11 suspended between the carrier 10 and the mounting surface 1a 'at the end of the traveling road. Then, the connecting member 11 is vertically rotated by the spring force and automatically stands up as shown in FIG.

When the pre-heat-treated aluminum ingot 20 is carried out from the front surface of the preheating path 3 onto the carrier 10 together with the carriage 2, the control drive means (not shown) then starts to operate and the carrier 10 is moved to the rail 6. Along the surface of the melting furnace 5. When the carrier 10 stops in front of the melting furnace 5, the above-mentioned control drive means incorporated in the drive unit 15 is activated again, and the first support arm 12 passes through the connecting member 11 and the second support arm 13 and It advances together with the drive unit 15 toward the material input port 5a of the melting furnace 5, and stops when the tip of the second support arm 12 reaches the inside of the input port 5a as shown by the phantom line in FIG. At this time, a fluid cylinder (not shown) built in the driving unit 15 is activated to move the pusher 14 as shown by a solid line in FIG.
The aluminum ingot 20 loaded on the trolley 2 by extending the
Is extruded from the rear to the front, and the same aluminum ingot 20 is put into the furnace of the melting furnace 5. According to this embodiment, at the same time when the pushing operation of the pusher 14 is started, the first support arm 12
Moves backward on the carrier 10 in synchronization with the pushing operation of the pusher 14. By controlling in this manner, the aluminum ingots 20 on the carriage 2 are sequentially charged from the back to the front of the melting furnace 5, and are evenly distributed in the melting furnace 5.

When the charging of the aluminum ingot 20 is completed, the first
The supporting arm 12 moves backward on the carrier 10 while the empty carriage 2 is supported by the second supporting arm 13, the first supporting arm 12 reaches a predetermined position and stops, and then the carrier 10 moves to the rail 6. It moves to the front of the traveling path of the trolley yard 4. Carrier 1
When 0 reaches the front of the trolley yard 4, it stops, and the first support arm 12 on the carrier 10 moves the end 1 of the trolley lane 1 of the trolley yard 4.
Go over b and get into the low flat portion 1d via the left and right steps. At this time, since the empty carriage 2 is still lifted by the second support arm 13, the carriage 2 is in a state of floating above the raised carriage running surface 1c via the left and right steps. When the carriage 2 reaches above the carriage running surface 1c, the forward movement of the first support arm 12 is stopped, and the fluid pressure cylinder 16 installed at the rear end portion of the support arm 12 operates in the contraction direction. Then, the second support arm 13 is pulled backward. At this time, the rollers 13 a provided on the lower surface of the second support arm 13 are the inclined surfaces 1 protruding from the upper surface of the first support arm 12.
Since it rolls down 2b ', the second support arm 13 descends horizontally to release the support of the carriage 2, and at the same time, the carriage 2 is transferred onto the carriage running surface 1c. Subsequently, when the first support arm 12 starts retreating and returns to a predetermined position of the carrier table 10, the carrier table 1
0 travels again on the rail 6 to the front surface of the preheating path 3, and exits from the preheating path 3 and shifts to the above-mentioned unloading operation of the next aluminum ingot 20 waiting at the end 1a of the carriage running path 1. The above operation procedure is repeated to automatically carry in and out aluminum ingots continuously.

FIG. 7 shows a different procedure for carrying in and out a heavy object by the apparatus of the present invention. According to the procedure of the figure, for example, an aluminum ingot and an aluminum scrap material are used by using the apparatus of the present invention. An example is shown in which the above are alternately charged into the melting furnace. According to the procedure shown in FIG. 7, the trolley 2 loaded with the aluminum ingot and the aluminum scrap material is on standby in the left-right direction (the vertical direction in FIG. 7) sandwiching the melting furnace 5, and the two units of the present invention are The loading and unloading device is for loading aluminum ingot and aluminum scrap material into the melting furnace 5 alternately using the same rail 6. According to the illustrated example, the preheating furnace 3 and the truck storage area 4 are installed adjacent to each other.

As described above, the loading / unloading procedure of the apparatus for loading / unloading heavy objects according to the present invention is not limited to the illustrated example.
Further, in the above-described embodiment, the trolley is used as a heavy load loading device, but the device of the present invention can also be applied to a normal pellet (cargo) having no wheels.
Further, in the above-described embodiment, the lifting operation of the second support arm is obtained from the expansion / contraction operation of the fluid pressure cylinder 16 by using the roller 13a and the inclined surface 12b '. It can also be realized by connecting the first support arm 12 and the second support arm 13 at a plurality of longitudinal positions by fluid pressure cylinders.

[0026]

As is clear from the above description, according to the apparatus for loading and unloading heavy objects according to the present invention, when unloading and loading in heavy objects, the heavy objects loaded on the pallet are loaded together with the pallet at a plurality of locations in the longitudinal direction. The support arm that can be evenly supported is used to lift and support it from below, and in that state, a long support arm is used to automatically convey between the predetermined parts and to load a heavy load into the processing section by the pusher. Not only can the heavy load be supported and transported in a stable state, but the loading and unloading device does not fall over due to the heavy load, and the supporting arm can be bent in the middle due to the load of the heavy load. There is nothing.

[Brief description of drawings]

FIG. 1 is a perspective view of an aluminum ingot carrying-in / out apparatus, which is a typical embodiment of the present invention, viewed from above.

FIG. 2 is a schematic plan view showing a transportation procedure of the apparatus.

FIG. 3 is a side view showing a state in which the apparatus is stopped in front of a preheating furnace.

FIG. 4 is a side view showing a state in which a trolley standing by in front of the preheating furnace is unloaded.

FIG. 5 is a side view showing a state after the dolly has been carried out.

FIG. 6 is a side view showing an operation when the aluminum ingot on the trolley is put into the melting furnace.

FIG. 7 is a schematic plan view showing a different transport procedure by the loading / unloading device of the present invention.

[Explanation of symbols]

 1 truck running path 1a, 1b trailing edge 1a ', 1b' mounting surface 1c truck running surface 1d flat section 2 truck 2a main body 2b metal loading surface 2b 'flange 3 preheating furnace 4 truck storage 5 melting furnace 5a ground Gold input port 5a 'Placement surface 6 Rail 10 Carrier 10a Wheel 10b Guide member 11 Connecting member 12 First support arm 12a Wheel 12a' Drive wheel 12b Projection portion 12b 'Sloping surface 13 Second support arm 13a Roller 14 Pusher 15 Drive part 15a Housing 16 Fluid pressure cylinder

Claims (5)

[Claims] 1. A pallet (2) which carries a heavy load (20) and stands by at a predetermined portion (3) is unloaded and carried to the front of the heavy load processing section (5), and on the pallet (2). A device for loading and unloading the heavy load (20) for loading the heavy load (20) into the processing section (5), wherein the predetermined portion (3) and the input port of the processing section (5) are substantially the same vertical. The transfer table (10) is located in the plane and runs along the transfer path (6) between the two, and the transfer table (10) is arranged at the left and right with an interval to support the pallet (2) from below. A pair of left and right first support arms (12) reciprocating on a table (10) in a direction orthogonal to the transport path (6), and lifting means provided on the left and right first support arms (12), respectively. The pair of left and right second support arms (13) that can be raised and lowered at a plurality of positions in the longitudinal direction, and between the end portions of each first support arm (12) on the side separated from the material processing unit (5). Combined on the pallet (2) A heavy load including a pusher (14) for pushing the heavy load (20) into the processing unit (5) and a drive unit (15) having various control drive means, etc. Loading / unloading device. 2. The elevating means comprises a plurality of protrusions having an inclined surface (12b ') in the longitudinal direction on the upper surface of the first support arm (12).
(12b) and a plurality of moving wheels (13a) on the lower surface of the second support arm (13) corresponding to the protrusions (12b). The end portion of the driving portion side of the (13) is connected to a cylinder (16) fixed to the first supporting arm (12) and extending and contracting in the longitudinal direction through a link mechanism.
The loading / unloading device described. 3. The elevating means are arranged at a predetermined interval in the length direction, connect the upper surface of the first supporting arm (12) and the lower surface of the second supporting arm (13), and move up and down. The loading / unloading device according to claim 1, comprising a plurality of cylinders that expand and contract in synchronization with the. 4. The carry-out according to claim 1, wherein the first support arm (12) is controlled and driven in a direction orthogonal to the transport path (6) by the control drive means provided in the drive section (15). Input device. 5. The loading / unloading device according to claim 1, wherein the pusher (14) starts to move backward from the forward limit of the first support arm, and at the same time, the pusher (14) is actuated synchronously in the pushing-out direction of the heavy object.