JP2010202386A - Production and transfer facility for large machinery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a production and transfer facility for large machinery for shortening the transfer time thereof between assembly processes inside a building where the assembly processes of the large machinery is performed on a U-shaped line. <P>SOLUTION: The facility includes: a first moving carriage A capable of mounting the large machinery; first moving mechanisms 11-14, and 21-24 for moving the first moving carriage A; a second moving carriage B capable of mounting the first moving carriage A moved by the first moving mechanisms 11-14, and 21-24, and movably supported by an air bearing 26; an elevation base 30 capable of mounting the second moving carriage B on the elevation base surface and in which the elevation base surface moves up and down between the lowest position of the elevation base surface such that the position of the upper surface of the second moving carriage B is flush with the floor surface, and the highest position of the elevation base surface such that the position of the elevation base surface is flush with the floor surface; a second moving mechanism 26 moving the second moving carriage B with the elevation base surface of the elevation base 30 in the highest position; and a guide rail 40 guiding the second moving carriage B along a predetermined path. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a production transfer facility for a large machine.

  Conventionally, as a production transfer facility, in an assembly line of a relatively small machine represented by an automobile, as shown in FIG. 9, the product 102 is continuously transferred by a belt conveyor 101, or on a rail. There is one that transports using a movable work table provided with a movable air bearing (see, for example, JP-A-6-39749 (Patent Document 1)).

  However, in the case of a large machine having a weight exceeding several tons, such as a large diesel engine, the parts to be assembled are large and the time required for one assembly process is long. In this way, the product 103 is transferred to the next process step by step.

  If these assembly steps are simply arranged in the building factory, they become horizontally long as shown in FIG. Here, when there are restrictions on the building or site of the assembly factory, as shown in FIG. 12, the assembly process is folded and arranged in a U-shape.

  In such a factory arrangement shown in FIG. 12, the crane 100 is sandwiched between the ridges in the building 100 shown in FIG. 13, so that the assembly process <2> cannot be transferred to the assembly process <3>. For this reason, in the factory arrangement of FIG. 12, since transfer using a cart or the like is performed, there is a problem that the time required for transfer is long. Further, even when a crane can be used for transfer instead of a carriage or the like, a lot of time is required including setup for lifting with a crane.

JP-A-6-39749

  Therefore, an object of the present invention is to provide a production transfer facility for a large machine capable of shortening the transfer time between the assembly processes in a building in which the assembly process of the large machine is performed by folding.

In order to solve the above-mentioned problem,
A first movable carriage capable of mounting a large machine;
A first moving mechanism for moving the first moving carriage;
A second movable carriage that can be mounted with the first movable carriage that is moved by the first movement mechanism and is movably supported by an air bearing;
The second movable carriage can be mounted on the elevation surface, and the lowest elevation position of the elevation surface where the upper surface and the floor surface of the second movement carriage coincide with each other and the highest elevation where the elevation surface becomes the height of the floor surface A lifting platform that moves up and down so that the lifting surface moves up and down between positions,
A second movement mechanism for moving the second movable carriage from a state where the elevation surface of the elevation base is at the highest position;
And a guide unit for guiding the second movable carriage along a predetermined route.

  According to the above configuration, the lifting platform on which the second moving carriage is mounted on the lifting surface is in a state where the lifting surface is lowered to the lowest descending position below the floor (the upper surface of the second moving carriage coincides with the floor). Then, the first moving carriage loaded with a large machine is moved onto the second moving carriage by the first moving mechanism and lifted by the lifting platform until the lifting surface reaches the highest position (the height of the floor surface). Then, the second moving carriage is moved by the second moving mechanism while guiding the second moving carriage along a predetermined route by the guide section from the state in which the raising and lowering surface of the raising and lowering board is level with the floor surface. Thereby, the transfer time between assembly processes can be shortened in the building where the assembly process of a large sized machine is performed by folding. In addition, since there is nothing other than the guide portion in the area where the second moving carriage moves while being guided by the guide portion, the space required for the transfer of the large machine can be reduced, and when the second moving carriage is not moving, It can be used effectively as a common passage.

  Also, when the second movable carriage is running or when the elevator platform is not operated, the elevator platform can be lowered so that the elevator platform has the same elevation surface as the floor surface, so that there is no recess in the floor surface. And can eliminate danger and traffic obstacles.

In addition, in the production transfer equipment for large machines of one embodiment,
The height of the second movable carriage is the same as the floor of the second movable carriage in a state where the second movable carriage is placed on the elevation surface of the elevator platform and the elevation surface of the elevator platform is lowered to the lowest position. After the first moving carriage on which the large machine is mounted is moved and mounted on the upper surface of the first moving mechanism,
Lifting the second movable carriage loaded with the large machine and the first movable carriage until the elevation surface of the elevator base is at the highest position of the same height as the floor surface,
The second moving carriage lifted by the lifting platform is movably supported by the air bearing and is moved by the second moving mechanism while being guided along a predetermined route by the guide portion.

  According to the embodiment, the second moving carriage supported by the air bearing can be moved along the floor surface by lifting the first moving carriage on which the large machine is mounted together with the second moving carriage by the lifting platform. Since the second movable carriage is guided along a predetermined route by the guide portion, the trouble of replacing the large machine can be omitted, and smooth transfer is possible.

  Further, in the production transfer facility for a large machine according to an embodiment, in the building arranged in the order of the assembly process so that the work section for each assembly process is folded in a U shape, the second movable carriage is connected to the guide unit. The second moving mechanism is used to move between the assembly steps before and after turning back into the U-shape while guiding along a predetermined route.

  According to the above embodiment, in the building arranged in the order of the assembly process so that the work section for each assembly process is folded back into a U shape, the guide section guides along a predetermined route in a U shape. Because the second moving carriage is moved by the second moving mechanism between the assembly steps before and after turning back, for example, the crane ridge is sandwiched between the assembly steps before and after turning back into a U-shape in the building. Even if it is an arrangement condition that cannot be transferred by a crane, it can be transferred easily.

  Moreover, in the production transfer facility for a large machine according to an embodiment, in the work section for each assembly process, the large machine is placed on at least one of both sides of the path along which the first moving carriage moves by the first moving mechanism. A work space was provided for assembling the large machine in a state of being mounted on the first movable carriage.

  According to the above embodiment, in the work section for each assembly process, the working space is provided on at least one of the both sides of the path along which the first moving carriage moves by the first moving mechanism, so that the first moving carriage is mounted on the first moving carriage. Assembly work can be easily performed on a large machine, and work efficiency is improved.

  As is clear from the above, according to the production transfer facility for large machines of the present invention, the production transfer facility for large machines capable of shortening the transfer time between assembly processes in a building where the assembly process for large machines is folded. Can be realized.

FIG. 1 is a perspective view schematically showing a production transfer facility for a large machine according to an embodiment of the present invention. FIG. 2A is a side view of the first movable carriage. 2B is a cross-sectional view taken along line IIB-IIB in FIG. 2A. FIG. 3 is a side view showing a state in the middle of placing the first movable carriage on the second movable carriage. FIG. 4 is a side view showing a state in which the second movable carriage loaded with the first movable carriage is lifted by the lifting platform. FIG. 5 is an enlarged view of a main part of FIG. FIG. 6A is a top view of the main part including the second movable carriage. 6B is a side view as seen from the line VIB-VIB in FIG. 6A. FIG. 7 is a diagram for explaining the movement and assembly process of the second movable carriage. FIG. 8 is a plan view showing an arrangement example of the main part in the factory building. FIG. 9 is a schematic diagram showing an assembly line for a conventional relatively small machine. FIG. 10 is a schematic diagram showing an assembly line of a conventional large machine. FIG. 11 is a schematic diagram showing an assembly process arranged horizontally in an assembly factory building. FIG. 12 is a schematic view showing an assembly process in which the assembly process is folded in a U-shape in the assembly factory. FIG. 13 is a schematic diagram for explaining a shape sandwiching the cranes in the building.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A large machine production transfer facility according to the present invention will be described in detail below with reference to embodiments shown in the drawings.

  FIG. 1 is a perspective view showing an outline of a production transfer facility for a large machine according to an embodiment of the present invention.

  As shown in FIG. 1, the large-sized machine production transfer facility of this embodiment includes a first moving carriage A, a second moving carriage B on which the first moving carriage A can be mounted, and the second moving carriage B. The lifting surface can be mounted on the lifting surface, and the lifting surface is between the lowest position of the lifting surface where the upper surface of the second movable carriage B coincides with the floor surface and the highest position where the lifting surface becomes the height of the floor surface. A lifting platform 30 that moves up and down so as to move up and down and a guide rail 40 as an example of a guide portion that guides the second movable carriage B along a predetermined route are provided. Two guide pins 27 (only one is shown in FIG. 1) are provided on one side surface of the second movable carriage B.

  Further, the production transfer equipment for the large machine includes rails 11 and 12 arranged on the floor surface at a predetermined interval and substantially in parallel, a chain 13, and a motor 14 for driving the chain 13. . The large-sized machine production transfer facility is provided on the upper side of the second movable carriage B, and includes rails 21, 22, a chain 23, and a motor 24 that are substantially parallel to each other at a predetermined interval. . The rails 21 and 22 are connected to the rails 11 and 12 in a state where the second movable carriage B is stored under the floor. The chain 13 is wound between two sprockets 15 (only one is shown in FIG. 1), and the chain 13 is driven by the motor 14 via the sprockets 15. The chain 23 is wound between two sprockets 25 (only one is shown in FIG. 1), and the chain 23 is driven by the motor 24 via the sprocket 25.

  The first moving carriage A has a main body 1 serving as a loading platform and four wheels 2 that are provided on the lower surface of the main body 1 and roll on rails 11, 12, 21, 22. The first moving carriage A moves along the rails 11, 12, 21, 22 by the wheels 2.

  In addition, the second movable carriage B has a main body portion 20 serving as a loading platform and six air bearings 26 provided on the lower surface of the main body portion 20. The second moving carriage B is movably supported by the air bearing 26.

  The rails 11, 12, 21, 22, the chains 13, 23, and the motors 14, 24 constitute a first moving mechanism that moves the first moving carriage A. The first moving mechanism is not limited to this, and may be a moving mechanism having another configuration.

  FIG. 2A shows a side view of the first movable carriage A, and FIG. 2B shows a cross-sectional view taken along line IIB-IIB in FIG. 2A.

  As shown in FIGS. 2A and 2B, a large size is obtained by driving the chain 13 with a motor 14 (shown in FIG. 1) by hooking the traction hooks 3 and 4 on both ends in the moving direction of the first moving carriage A onto the chain 13. With the machine 10 mounted, the wheels 2 roll on the rails 11 and 12 arranged on the floor, and the first movable carriage A moves between the assembly steps. Here, the assembly work can be performed while the large machine 10 is mounted on the first movable carriage A.

  FIG. 3 is a side view showing a state in the middle of placing the first movable carriage A on the second movable carriage B. FIG. As shown in FIG. 3, the second movable carriage B is stored under the floor below the floor 50 so that the upper surface of the main body 20 is at the same height as the floor 50, and is shown in FIG. 1. The motors 14 and 24 are driven to move the first moving carriage A along the rails 11, 12, 21 and 22, and the first moving carriage A loaded with the large machine 10 is placed on the second moving carriage B. .

  Here, when the upper surface of the second movable carriage B is made equal to the height of the floor surface 50, it is allowed when the first movable carriage A is moved and placed on the upper surface of the second movable carriage B from the floor side. It shall include some level differences.

  FIG. 4 shows a state in which the second movable carriage B on which the first movable carriage A is mounted is lifted by the lifting platform 30. As shown in FIG. 4, the second movable carriage B with the first movable carriage A and the large machine 10 mounted thereon is a hydraulic jack that lifts the lifting platform body 31 until the lifting surface of the lifting platform 30 reaches the floor level. Alternatively, it is lifted by being lifted by a lifting device 32 such as a screw jack.

  Here, when the lifting surface of the lifting platform 30 is made the same as the height of the floor surface, there are some steps that are allowed when the second movable carriage B moves from the lifting surface of the lifting platform 30 to the floor surface side. Shall be.

  FIG. 5 shows an enlarged view of the main part of FIG. 4. As shown in FIG. 5, the air bearing 26 provided on the lower surface of the second movable carriage B is externally supplied with high pressure via an air hose (not shown). When air is supplied, the first moving carriage A carrying the large machine 10 is lifted from the lifting surface of the lifting platform 30, and an air layer is formed between the air bearing 26 and the floor surface so that transfer is possible. To do.

  6A shows a top view of the main part including the second movable carriage B, and FIG. 6B shows a side view seen from the line VIB-VIB in FIG. 6A.

  A self-propelled tire 28 and a motor 29 for driving the self-propelled tire 28 are provided on the lower surface of the second movable carriage B, and two guide pins 27 are provided on one side surface of the second movable carriage B. , 26 are provided. Due to the action of the air bearing 26, the second movable carriage B in a state of floating from the floor surface is rotated along the guide rail 40 provided on the floor surface by the rotation of the self-propelled tire 28 driven by the motor 29. 2 The guide pin 27 of the moving carriage B moves while being guided. The guide rail 40 allows a U-turn with a small turning radius.

  The air bearing 26, the self-propelled tire 28, and the motor 29 constitute a second moving mechanism that moves the second moving carriage B. The second moving mechanism is not limited to this, and may be a moving mechanism having another configuration.

  In the production transfer facility for large machines having the above-described configuration, the transfer time between the assembly processes can be shortened in the building in which the assembly process of the large machines is performed by folding. Further, since there is no area other than the guide rail 40 in which the second moving carriage A moves while being guided by the guide rail 40, the space required for transferring the large machine can be reduced, and the movement of the second moving carriage A can be reduced. At other times, it can be used effectively as a shared passage.

  Further, when the second movable carriage B is running or when the elevator 30 is not operated, the elevator 30 can be lowered so that the elevator surface of the elevator 30 can be the same as the floor surface. It can be eliminated and danger and traffic obstacles can be eliminated.

  Further, by lifting the first moving carriage A on which a large machine is mounted together with the second moving carriage B from the lifting platform 30, the second moving carriage B supported by the air bearing 26 can be moved along the floor surface. Since the second movable carriage B is guided along a predetermined route by the guide rail 40, the trouble of replacing the large machine can be omitted, and smooth transfer is possible.

  Further, in a building arranged in the order of the assembly process so that the work section for each assembly process is folded back in a U-shape, the assembly before and after folding back in the U-shape while being guided along a predetermined route by the guide rail 40 By moving the second movable carriage B between the processes, it is in an arrangement condition that cannot be transferred by the crane because it is sandwiched between the ridges of the crane between the assembly processes before and after folding back into the U shape in the building Even if it exists, it can be easily transferred.

  Next, an example of the movement and assembly process of the second movable carriage B will be described with reference to FIG. In this assembly process, a large diesel engine is assembled as an example of a large machine. The large machine is not limited to a large diesel engine, and the present invention may be applied to production transfer equipment of other large machines.

  As shown in FIG. 7, the first stage assembly of the large diesel engine is performed on the first movable carriage A in the work section of the assembly process <1>. When the first stage of assembly is completed, the first movable carriage A is moved from the work section of the assembly process <1> to the work section of the assembly process <2>.

  Next, the second stage assembly of the large diesel engine is performed in the work section of the assembly process <2>. When the second stage assembly is completed, the first moving carriage A equipped with the large diesel engine is placed on the upper surface of the second moving carriage B stored under the floor, and then the second moving carriage B is moved by the lifting platform 30. Lift it up so that it can run on the floor. Then, the large diesel engine is moved to the work section of the assembly process <3> by the second moving carriage B together with the first moving carriage A.

  Next, in the work section of the assembly process <3>, the crane is used to unload the large diesel engine from the first moving carriage A, and the third stage assembly of the large diesel engine and the common base plate, generator, etc. is performed. Do. When the assembly in the third stage is completed, the assembly is moved to the work section of the assembly process <4> using a crane or the like.

  Next, in the work section of the assembly process <4>, the assembly is completed by applying piping and electrical equipment to the assembly.

  The second movable carriage B returns to the elevation surface of the elevator 30 in the assembly section <2> after lowering the large diesel engine and the first movable carriage A in the assembly section <3>. Stored again under the floor. Here, the empty first movable carriage A returns to the work section of the assembly process <1>.

  FIG. 8 shows an arrangement example of the main part in the factory building. As shown in FIG. 8, in the work section for each assembly process, large diesel engines are installed on both sides of the path along which the first moving carriage A moves. Work tables 80 and 80 are provided as an example of a work space for carrying out assembly work while mounted on one mobile carriage A.

  By providing work platforms 80 and 80 on both sides of the path along which the first mobile carriage A moves in the work section for each assembly process, assembly work can be easily performed on a large machine mounted on the first mobile carriage A. It can be carried out.

  As described above, in the production and transfer equipment for large machines according to the present invention, it was possible to reduce the setup time, the transport time, and the number of workers (from the conventional four to one after improvement). Conventionally, a long time was required for the conveyance time, but after the improvement, it becomes 1/10, and the space in which the second movable carriage B moves along the guide rail 40 can be used effectively (use of a passage).

  In the above embodiment, the work tables 80 and 80 are provided on both sides of the path along which the first mobile carriage A moves. However, a work space may be provided on one side of the path along which the first mobile carriage moves.

  Although specific embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Main body part 2 ... Wheel 3, 4 ... Traction hook 10 ... Large machine 11, 12, 21, 22 ... Rail 13, 23 ... Chain 14, 24 ... Motor 15, 25 ... Sprocket 20 ... Main part 26 ... Air bearing 27 ... Guide pin 28 ... Self-propelled tire 29 ... Motor 30 ... Elevator base 31 ... Elevator base body 32 ... Elevator 40 ... Guide rail 80 ... Working table A ... First movable carriage B ... Second movable carriage

Claims (4)

A first movable carriage capable of mounting a large machine;
A first moving mechanism for moving the first moving carriage;
A second movable carriage that can be mounted with the first movable carriage that is moved by the first movement mechanism and is movably supported by an air bearing;
The second movable carriage can be mounted on the elevation surface, and the lowest elevation position of the elevation surface where the upper surface and the floor surface of the second movement carriage coincide with each other and the highest elevation where the elevation surface becomes the height of the floor surface A lifting platform that moves up and down so that the lifting surface moves up and down between positions,
A second movement mechanism for moving the second movable carriage from a state where the elevation surface of the elevation base is at the highest position;
A production transfer facility for a large machine, comprising a guide portion for guiding the second movable carriage along a predetermined route. In the production transfer equipment for large machines according to claim 1,
The height of the second movable carriage is the same as the floor of the second movable carriage in a state where the second movable carriage is placed on the elevation surface of the elevator platform and the elevation surface of the elevator platform is lowered to the lowest position. After the first moving carriage on which the large machine is mounted is moved and mounted on the upper surface of the first moving mechanism,
Lifting the second movable carriage loaded with the large machine and the first movable carriage until the elevation surface of the elevator base is at the highest position of the same height as the floor surface,
The second moving carriage lifted by the lifting platform is movably supported by the air bearing and is moved by the second moving mechanism while being guided along a predetermined route by the guide portion; Production transfer equipment for large machines. In the production transfer equipment for large machines according to claim 1 or 2,
In the building that is arranged in the order of the assembly process so that the work section for each assembly process is folded back in a U-shape, the U-shaped guide is guided by the guide unit along a predetermined route. A production transfer facility for a large machine, wherein the second moving mechanism is used to move between assembly steps before and after turning back into a letter shape. In the production transfer equipment for large machines according to any one of claims 1 to 3,
In the work section for each assembly process, the large machine is assembled in a state where the large machine is mounted on the first movable carriage on at least one of both sides of the path along which the first movable carriage moves by the first moving mechanism. A production transfer facility for large machines, characterized in that a work space is provided to perform work.

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