JP2004196114A - Engine assembling method and engine assembling line - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an engine assembling line with excellent workability and productivity by simply constituting the whole of layout of the line and appropriately securing work space for assembling. <P>SOLUTION: The engine assembling line for subsequently assembling the engine has (a) a suspension support part 13 liftably arranged against a truck floor surface 11a of a truck 11, mounted with a suspension member 14 of an automobile and fixing/arranging the engine member 15 through the mounted suspension member 14; (b) working passage parts 11c-11f provided on the truck floor surface 11a of the truck 11 around the suspension support part 13 mounted with the suspension member 14 and facilitating the assembling of the engine member 15 fixed/arranged on the suspension member 14; and (c) a working space part 13d provided at a lower part of the suspension member 14 mounted to the suspension support part 13. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
[Industrial applications]
The present invention relates to a method for assembling an engine for an automobile or the like, and an engine assembly line.
[0002]
[Prior art]
In a conventional automobile engine assembly line, the necessary components are sequentially assembled on a transportation device such as a friction trolley or conveyor that carries the components such as the engine and suspension, and the assembly is completed. Things have been adopted.
[0003]
FIG. 5 is a layout diagram showing an example of a conventional engine assembly line. The engine assembly line includes an engine preparation line 52 in which the engine members 50 are put on a pallet 51 and sequentially assembled by an operator, a suspension preparation line 54 in which suspension members 53 are assembled, and a chassis pallet 55 And a merging line 56 for completing the engine member 50 by mounting the engine member 50 on the suspension member 53 and assembling other members.
[0004]
The suspension member 53 and the engine member 50 mounted on the merging line 56 are independently assembled on each line. Then, at the portion A of the merging line 56, the engine member 50 removed from the pallet 51 is replaced on the suspension member 53 to unite the two.
[0005]
Further, for example, the following is known in connection with this engine assembling technique.
(A) Patent Document 1 discloses a vehicle suspension assembling apparatus in which the upper end of a rod-shaped member constituting a suspension is inserted into a mounting hole formed in a vehicle body from below to assemble the vehicle, and the rod-shaped member is guided along an inclined surface. A suspension assembling apparatus having a guide member and a guide member positioning mechanism for positioning the guide member at a predetermined position on a vehicle body is described.
(B) In Patent Document 2, a suspension including a suspension arm having a pair of connecting portions to a vehicle body and a damper having a lower end connected to the suspension arm is placed on a pallet, and the pallet is placed below the vehicle body. In a device for assembling a suspension to a vehicle body by ascending from a position, a suspension assembling device is disclosed in which a pallet is provided with support portions for supporting the pair of connection portions and the damper, respectively.
(C) Patent Document 3 discloses a feed provided with a fast-forward roller arranged at an acute angle with respect to an axis and a slow-feed roller arranged at an acute angle below a bogie guided and guided by guide rails laid on a floor surface. A method is described in which a friction conveyor having a shaft disposed along the guide rail is provided, and a vehicle body is assembled on the friction conveyor.
[0006]
[Patent Document 1]
JP-A-6-183378
[Patent Document 2]
Japanese Patent Application Laid-Open No. 2002-19657
[Patent Document 3]
JP-A-2002-179239
[Problems to be solved by the invention]
However, the conventional engine assembly technology has the following problems.
(1) In the case of assembling on a pallet of a friction cart that runs the engine, the suspension part is assembled in advance, and a process for replacing the engine with this suspension and a configuration such as a coalescence line are required. There has been a problem that the entire line layout is complicated and lacks productivity.
(2) In the conventional assembly line, since the working passage is not formed between the carts on which the engine members are mounted, it is not possible to move from one floor to the other with the engine interposed therebetween. There was a problem that the operation and management of the line became difficult because unnecessary work occurred due to the need of one or more workers on both sides of the line, and it became difficult to follow the work system such as work instructions. .
(3) In addition, since the height of the conveyed engine members and the like is fixed in the conventional one, the worker is often forced to take an unnatural posture such as walking with a crab or squatting in assembling, which causes back pain and accidents. There was a problem that the working environment could not be maintained properly because of such factors.
(4) In the case where the suspension is securely mounted on the vehicle body using the guide member or the like described in Patent Document 1, the suspension is mounted on the jig pallet and moves, but can move around the jig pallet. Since a working space is not provided in the working passage portion or the lower portion of the suspension portion so that a worker can put his / her hand, there is a problem that assembly of the engine portion is often hindered and workability is poor.
(5) In the apparatus described in Patent Document 2 for assembling a vehicle body using a pallet on which a suspension is mounted, an engine portion mounted on the suspension must be assembled in a separate process, and the assembling process and line configuration are reduced. There has been a problem that the work becomes complicated and efficient work cannot be performed, and the economy is low.
(6) In the technology of assembling a vehicle body on a friction conveyor described in Patent Document 3, although the transport speed in each bogie portion can be adjusted, the work environment around the bogie or on the bogie is not properly secured. Therefore, there is a problem that the workability at the time of assembling is lacked as in Patent Documents 1 and 2.
[0010]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides an engine assembling method capable of simplifying an entire line layout, appropriately securing a work space at the time of assembly, and having excellent workability and productivity. In addition, the operator is not forced to take an unreasonable posture during assembly work, has excellent work safety and work environment, and eliminates jig pallets etc. to efficiently and economically assemble the engine and suspension part. It is an object of the present invention to provide an engine assembly line that can perform engine assembly.
[0011]
[Means for Solving the Problems]
According to an aspect of the present invention, there is provided an engine for sequentially assembling automobile engines on a truck having a barrier-free structure in which a substantially rectangular truck floor moves at the same height as a surrounding passage floor. An assembly method, comprising: (a) a suspension member arranging step of assembling a suspension member of the vehicle to a suspension support portion arranged to be able to move up and down with respect to a bogie floor of the trolley; and (b) the suspension member arranging step. And (c) an engine assembly step of sequentially performing predetermined assembly work on the engine member fixedly arranged on the suspension member. It is configured.
[0012]
The invention according to claim 2 is an engine assembling line for sequentially assembling an automobile engine on a truck having a barrier-free structure in which the substantially rectangular bogie floor moves at the same height as the surrounding passage floor. a) a suspension supporting portion which is arranged so as to be able to move up and down with respect to the bogie floor of the bogie, to which a suspension member of the vehicle is attached, and in which an engine member can be fixedly arranged via the attached suspension member; b) a work passage portion provided on a bogie floor of the bogie around the suspension support portion to which the suspension member is attached and facilitating assembly of the engine member fixedly arranged on the suspension member; For work provided below the suspension member attached to the suspension support It is configured to include a The inter and.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
The engine assembling method according to the present embodiment includes a suspension member arranging step of assembling a suspension member to a suspension support portion arranged to be able to move up and down with respect to a bogie floor of a bogie on which the engine is assembled and travels; And an engine assembling step of sequentially performing a predetermined assembling operation on the engine member fixedly arranged on the suspension member. As a result, the engine members can be assembled while being directly mounted on the suspension members, so that a conventional jig pallet for transfer can be omitted, and the engine assembly preparation line and the suspension preparation line need to be individually arranged. There is no need to configure the entire line layout simply, and the efficiency of line operation and management can be improved.
[0014]
Further, the engine assembly line according to the present embodiment includes a suspension support portion arranged to be able to move up and down with respect to the bogie floor of the bogie, and a work passage provided on the bogie floor surface of the bogie around the suspension support portion. And a working space provided below the suspension member attached to the suspension support. As described above, the engine assembly line is arranged so as to be able to move up and down freely, and is provided with a suspension support portion in which a suspension member serving as a tray is fixedly arranged with respect to the engine member, so that the suspension can be easily operated according to the contents of the assembly work. The position of the member can be adjusted.
[0015]
In addition, since a work passage is secured around the suspension member on which the engine member is mounted, it is possible to move back and forth on both sides across this line, making it easy to deliver jigs, parts, etc., and to give work instructions. It has excellent work environment.
[0016]
In addition, since a working space is formed below the suspension member attached to the suspension support, the assembling work from the lower side can be performed easily and without forcing a posture. Is also excellent.
[0017]
FIG. 1 is a layout view of an engine assembly line to which the engine assembling method of the present embodiment is applied, FIG. 2 is an enlarged plan view of a main part showing the bogie part, and FIG. 3 is a main part showing the bogie part. It is an enlarged front view.
[0018]
In FIG. 1, reference numeral 10 denotes an engine assembly line according to the present embodiment, 11 denotes a frictional force generated when a rotating roller (not shown) comes into contact with the bottom surface, and a pressing traction force such as a pressing traction device (not shown) provided at the end of the line. A carriage traveling on the rail 12; 13, a suspension supporting portion arranged on the carriage 11 so as to be able to move up and down with respect to a bogie floor 11a of the carriage 11, 14 a suspension member attached to the suspension supporting portion 13, and 15 a suspension. An engine member mounted on the member 14, 16 is a straight forward path line, 17 is a bogie transfer direction changing section for changing the direction of the bogie 11 from the forward path line 16 toward the return path, and 18 is a bogie transfer direction change section. This is a return line in which the bogie 11, which has been turned in the reverse direction at 17, is transferred in a straight line.
[0019]
The cart 11 is conveyed at a predetermined speed by wheels 11b running on rails 12 as shown in FIGS. 1 to 3, and the substantially rectangular cart floor 11a extends along passage floors 10a and 10b on both sides of the line. And move at the same height. In addition to the friction method in which the carriage 11 is moved by the frictional force of the rotating roller, the carriage 11 can be applied to a movement method in which the carriage is pushed or pulled from the end of the line in a tocorotene manner.
[0020]
The suspension support unit 13 includes four bar-shaped members 13a erected in a bar shape on the bogie floor 11a, and an H-shaped support member 13b that can vertically move each of the bar-shaped members 13a synchronously or individually. Is provided with the lifting unit 13c. That is, each of the four bar-shaped members 13a is erected at a predetermined length from the four corners of the H-shaped support member 13b disposed horizontally, and the upper end thereof can stably hold the mounted suspension member 14. It is formed with a suitable fitting portion. Thus, a working space 13d of a predetermined size is secured between the lower part of the suspension member 14 such as a suspension member and the H-shaped support member 13b, and the work is performed from the narrow side of the H-shaped support member 13b. This facilitates the assembling work when taking the jigs and the like into and out of the work space 13d.
[0021]
It is desirable that the fitting portion be covered with a soft material or an elastic material such as a rubber film plate so that the contact surface is not damaged when the suspension member 14 is fitted to the suspension support portion 13.
[0022]
The lifting unit 13c is driven via an electric cylinder, a pneumatic cylinder, a hydraulic cylinder, or the like. In this manner, the height of the rod-shaped member 13a is provided near the hand at the time of work, such as the suspension support portion 13 and the periphery thereof, for example, by using a switch for driving the elevating unit 13c in accordance with the content of each work process. The work height can be set to three levels, such as high, medium and low.
[0023]
The suspension member 14 is a part of a vehicle suspension such as a front suspension member, and includes a spring (spring), a shock absorber, a link arm, and the like. In addition, such a suspension member includes a rod, a cam, a stabilizer, a bush, and the like for adjusting the alignment, which are added as necessary.
[0024]
The suspension member 14 includes a MacPherson strut type, a double wishbone type, a rigid axle type, a trailing arm type, and a multi-link type. An example in which the suspension member of the present embodiment is applied to a front engine rear drive type suspension will be described. However, the present invention is not limited to this, and other types of suspensions, such as a rear engine rear drive and a midship engine rear drive, are described. It is also possible to apply to such a format.
[0025]
As the engine member 15, various engine types can be applied. For example, two-cycle, four-cycle type, single-cylinder to multi-cylinder, in-line, V-type, horizontally opposed cylinder arrangement, and camshaft arrangement type such as SOHC, DOHC, etc. The present invention can be applied to a turbocharger for supplying air into a cylinder, a turbocharger provided with a supercharger, and the like.
[0026]
As shown in FIGS. 2 and 3, around the suspension support portion 13 on the bogie floor surface 11a of the bogie 11, the length of one side of the base of the substantially rectangular suspension support portion 13 is set to 1/2 to 2 Work passage portions 11c to 11f which are twice as wide are provided on the front, rear, left and right sides, respectively. When the width of the working passages 11c to 11f is smaller than １ ／ times the length of one side of the base of the suspension support 13, the worker can efficiently work around the suspension support 13. It is difficult to secure a work space that can be used. Conversely, if the width is larger than twice, the efficiency of use of the space in the factory is deteriorated, which is not preferable.
[0027]
By providing such working passage portions 11c to 11f, the worker can move around the suspension support portion 13 and can move from one passage floor surface 10a to the other passage floor surface 10b. By arranging a chair or the like on which the worker sits down in the work passages 11c to 11f, the assembling work can be performed in an easy posture and the working efficiency can be improved.
[0028]
Further, as shown in FIG. 3, a working space 13d having a height of about 10 to 30 cm is formed between the lower part of the suspension member 14 supported by the rod-shaped member 13a and the H-shaped support member 13b. It has become. Thus, it is possible to easily insert bolts and assemble parts by inserting hands and tools into the working space 13d. For example, even if there is a front suspension member, the work of tightening the drive plate and the work of assembling the front pipe (exhaust pipe) are facilitated so that the work efficiency can be improved.
[0029]
Subsequently, an engine assembling method applied to the engine assembling line 10 of the embodiment configured as described above will be described.
[0030]
In this engine assembling method, a cart 11 for assembling an engine mounted on an automobile is conveyed through a friction wheel or the like (not shown) so that the cart floor 11a of the cart 11 is flush with the surrounding passage floors 10a and 10b. This is a method for assembling an engine in a conveyor having a barrier-free structure. In the first few steps, after assembling a suspension member 14 to a suspension support portion 13 of a trolley 11, an engine member 15 is set on the suspension member 14 and finally goes through several steps. This is to complete the assembly. Hereinafter, this assembling method will be described through procedures.
[0031]
First, as shown in FIG. 1, a suspension member 14 is assembled to a suspension support portion 13 which is arranged to be able to move up and down with respect to a bogie floor 11a of a bogie 11 at a portion A near an upstream entrance of a forward line 16 (suspension member arranging step). ).
[0032]
Next, in the B section of the outward line 16, the engine member 15 is moved from the table on which the engine member 15 is mounted and set on the suspension member 14 on the carriage 11 by using a suspension device such as a winch (not shown) ( Engine member arrangement step).
[0033]
Subsequently, on the carriage 11 moving on the forward line 16 and the backward line 18, other members are assembled or adjusted with respect to the engine member 15 and the suspension member 14 fixedly arranged on the suspension member 14 (engine assembly). Process).
[0034]
In this way, as shown in FIGS. 3 and 4, the suspension member 14 is used as a tray instead of a tray while adjusting the length of the bar-shaped member 13a or using a chair to take a reasonable working posture corresponding to each work process. A member in which the engine member 15 and the suspension member 14 are assembled is completed, and can be finally removed from the C portion at the end of the return line 18.
[0035]
【The invention's effect】
As described above, according to the engine assembling method of the present invention, a suspension member arranging step of assembling a suspension member of an automobile to a suspension support portion arranged to be able to move up and down with respect to a bogie floor surface of the bogie, and an engine member as the suspension member Since there is an engine member arranging step for setting and an engine assembling step for sequentially performing predetermined assembling work on the engine member fixedly arranged on the suspension member, the entire line layout can be simply configured and the assembling work can be performed. Work space and productivity can be improved by appropriately securing a space.
[0036]
Further, according to the engine assembly line of the present invention, the suspension support portion which is arranged to be able to move up and down with respect to the bogie floor of the bogie and to which the suspension member is attached, and the work provided around the suspension support portion to which the suspension member is attached Having a work passage section and a working space section provided below the suspension member, the suspension member can be used as a tray for the engine member, and the operator is not forced to take an excessive posture during the assembly work. Work safety and work environment are excellent, and the engine member and the suspension part can be assembled efficiently and economically.
[Brief description of the drawings]
FIG. 1 is an arrangement diagram of an engine assembly line to which an engine assembly method according to an embodiment is applied.
FIG. 2 is an enlarged plan view of a main part showing a bogie of an engine assembly line according to the present embodiment.
FIG. 3 is an enlarged front view of a main part showing a truck of the engine assembly line of the present embodiment.
FIG. 4 is an explanatory diagram showing a working state of the engine assembly line of the present embodiment.
FIG. 5 is a layout diagram of a conventional engine assembly line.
[Explanation of symbols]
Reference Signs List 10 engine assembly line 10a, 10b aisle floor 11 trolley 11a trolley floor 11b wheels 11c to 11f work passage 12 rail 13 suspension support 13a rod 13b H-shaped support 13c lifting unit 13d work space 14 suspension Member 15 Engine member 16 Outgoing line 17 Bogie transfer direction change section 18 Return line

Claims (2)

An engine assembling method for sequentially assembling an automobile engine on a barrier-free trolley in which the substantially rectangular trolley floor moves at the same height as the surrounding passage floor,
(A) a suspension member arranging step of assembling a suspension member of the vehicle to a suspension supporting portion arranged to be able to move up and down with respect to a bogie floor of the bogie;
(B) an engine member arranging step of setting an engine member on the suspension member following the suspension member arranging step;
(C) an engine assembling step of sequentially performing a predetermined assembling operation on the engine member fixedly arranged on the suspension member. An engine assembly line for sequentially assembling automobile engines on a truck having a barrier-free structure in which the substantially rectangular truck floor moves at the same height as the surrounding passage floor,
(A) a suspension support portion which is arranged so as to be able to move up and down with respect to a bogie floor of the bogie, to which a suspension member of the vehicle is attached, and in which an engine member can be fixedly arranged via the attached suspension member;
(B) a work passage portion provided on a bogie floor of the bogie around the suspension support portion to which the suspension member is attached and facilitating assembly of the engine member fixedly arranged on the suspension member;
(C) a working space provided below the suspension member attached to the suspension support, and an engine assembly line.

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