JPH1134945A - Device and method for assembling power plant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assemble a power plant on a car body inexpensively and efficiently, by providing a mounting jig which is engaged with a power plant and a member and positions them each other when they are mounted to the car body such that they are both held. SOLUTION: When a power plant P is mounted to a car body, a first jig 16 is placed on the top part of a transmission supporting member 15 which is stood on an installing table 11. A hole opening in a sus-cross member 4 is inserted on a standard pin 18 of supporting members 12b, 12b to position the sus-cross member 4. Next, a jig 16 is inserted into a through hole of an engine member 3, a flange part of an oil pan 1a is contacted with receiving tables 13, 14 stood on the installing table 11, an engaging part of the jig 16 is inserted into a recessed part on the lower surface of a transmission 2, and the transmission 2 is positioned. Then, rubber mount 5 fixed to the transmission 2 is tightened to the sus-cross member 4 with bolts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power plant assembling apparatus for mounting a power plant on a vehicle body.

[0002]

2. Description of the Related Art Generally, in an automobile assembly line, a power plant including an engine and a transmission is mounted and mounted on a vehicle body suspended and supported on a ceiling from below the vehicle body. . In this case, a power plant assembling apparatus having an elevating mechanism is used, and the power plant is pushed up and assembled to the vehicle body by the elevating mechanism.

[0003] In a state where the power plant is mounted on a vehicle body, a power plant is generally supported at two points via a rubber mount on a cross member fastened and fixed to the vehicle body.
As a mounting method in this case, for example, Japanese Patent Publication No. 2-624
As shown in FIG. 1 and FIG.
A power plant holding two cross members at two points via one rubber mount is defined as one unit, and the mounting table on which the one unit is mounted is lifted from below the vehicle body with respect to the vehicle body transported in a suspended state by a trolley conveyor. The power plant and the cross member are assembled by ascending movement by the mechanism.

In this case, after a mounting table on which a unit including a power plant and a member is mounted is raised to a predetermined position on the vehicle body, the member is fastened and fixed to the vehicle body, and the power plant is supported in a falling direction. Therefore, one place of the power plant is fixed to the vehicle body with a predetermined jig, and the mounting table is lowered when the power plant is temporarily fixed to the vehicle body. Thereafter, the power plant is finally assembled to the vehicle body via a rubber mount. The lowered mounting table is replaced with a mounting table on which one unit including a power plant and a member corresponding to the next transported vehicle body is mounted in preparation for assembling the power plant to the next transported vehicle body. As a result, production efficiency is improved.

[0005]

However, in recent years, a rubber mount that regulates the limit of roll vibration of a power plant has become unnecessary due to the specifications of a vehicle, and two points of support by a rubber mount on a cross member are one point. Some vehicles can be supported.

As a result, the power plant is temporarily fixed to the vehicle body after the mounting table is lowered at a total of two places: a single point support to the member by the rubber mount and a single point support to the vehicle body by the predetermined jig. With only these two locations, the power plant and the members cannot be sufficiently positioned with respect to each other, and it is difficult to finally assemble the power plant to the vehicle body. Although the number of supporting points of the power plant may be increased by the above-mentioned predetermined jig, an extremely large number of jigs are required to support a heavy load of the power plant, and the cost is increased and the jig is attached and detached. Deterioration of production efficiency becomes a problem.

An object of the present invention is to provide an assembling apparatus and an assembling method for a power plant which can assemble the power plant to a vehicle body while minimizing an increase in cost and a decrease in production efficiency. .

[0008]

According to the first aspect of the present invention, there is provided a power plant, and a member supporting the power plant and fixed to a vehicle body, wherein the power plant and the members are held together. In the power plant assembling apparatus to be mounted on the vehicle body, the power plant and the member are mounted on the vehicle body, and the power plant and the member are locked to each other, and the power tool and the member are provided with an assembling jig. It is characterized by.

According to the present invention, for example, even if the rubber mount support for the members of the power plant is one-point support, the positioning of the power plant and the members at the time of assembly is surely performed by the assembling jig. be able to.

According to a second aspect of the present invention, in the first aspect of the present invention, the assembling jig has a first groove having a keyway and a first locking portion for locking to the power plant. A second jig having an engaging portion engageable with the key groove of the first jig and having a second locking portion for locking the member. With the second locking portion of the second jig engaged with the groove, the power plant and the member are positioned relative to each other, and the second jig is positioned relative to the key groove of the first jig. The positioning of the power plant and the member relative to each other is released by releasing the engagement of the engaging portion.

According to the present invention, the positioning of the power plant and the member relative to each other can be easily released by releasing the engagement of the second locking portion of the second jig with the key groove of the first jig. it can.

According to the third aspect of the present invention, the member is held below the power plant, and the first jig is formed so as to be inserted into a vertical through hole provided in the member. The keyway of the first jig and the first
A locking portion is disposed above the through hole of the member and between the power plant and the member, and the first locking portion locks the power plant, while an engaging portion of the second jig is provided. Is engaged with the key groove of the first jig,
The second locking portion of the second locking portion locks on the upper surface of the periphery of the through hole of the member to perform positioning between the power plant and the member.

According to the present invention, the first jig and the second jig can be easily removed from the mutual positioning of the power plant and the member. In the invention according to claim 4, a power plant comprising: a power plant; and a member supporting the power plant and fixed to a vehicle body, and assembling the vehicle body with the power plant and the members held together. The positioning method is characterized in that the power plant and the member are positioned relative to each other by an assembling jig that locks the power plant and the member, and the power plant and the member are mounted on the vehicle body.

According to the present invention, for example, even if the power plant is supported at one point with respect to the member, the positioning of the power plant and the member can be reliably performed by the assembling jig. Assemble members easily to the body.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a power plant assembling apparatus on which a power plant according to an embodiment of the present invention is mounted. FIG. 2 is a side view of the assembling device of the power plant. FIG. 3 is a side view of the first jig. FIG. 4A is a top view of the second jig, and FIG. 4B is a side view of the second jig. FIG. 5 is an enlarged view of a main part of the assembling apparatus in a state before the temporary fixing where the power plant is mounted on the mounting table. FIG. 6 is an enlarged view of a main part of the assembling apparatus in a state where the power plant is temporarily fixed to the vehicle body after the mounting table is lowered.

As shown in FIGS. 1 and 2, reference numeral 1 denotes an engine.
Are concluded to form a power plant P. 1a is an oil pan.

Reference numeral 3 denotes an engine member, and 4 denotes a suspension cross member. The rear end of the engine member 3 is bolted to the suspension cross member 4. In addition, suspension cross member 4
, The transmission 2 of the power plant P is fixed via a first rubber mount 5 on the rear side thereof.

Reference numeral 6 denotes a vehicle body. The left side of FIG. 2 is the front side of the vehicle body, and the right side is the rear side of the vehicle body. 7 is a side frame, 8 is a lower frame, and 9 is an engine room. Reference numeral 10 denotes an assembling device that transports the power plant P and assembles it with the vehicle body 6, and is disposed at a power plant assembling position on a trolley conveyor (not shown) that transports the vehicle body 6. This assembling device 10
Is a mounting table 11 on which the power plant P is mounted.
However, a moving mechanism (not shown) is arranged at the bottom,
The mounting table 11 is vertically moved by a lifting mechanism (for example, a cylinder) (not shown), and is slid back and forth by a slide mechanism (not shown).

A pair of support members 12a, 12b, 12a, 12b are respectively provided on the left and right sides of the mounting table 11 in the front-rear direction.
The support members 12a, 12b, 12
The right and left sides of the suspension cross member 4 are supported at two points in the front and rear directions by a and 12b. The support member 12
a and 12a only support the lower surface of the suspension cross member 4, while the support members 12b and 12b have a reference pin 18 at the upper end thereof, and insert the reference pin 18 into a hole opened in the suspension cross member 4. Then, the suspension cross member 4 is positioned with respect to the mounting table 11. Reference numerals 13 and 14 denote receiving stands, which are erected on the mounting table 11 located below the oil pan 1a, and abut against the flange portion of the oil pan 1a to support the engine 1. Reference numeral 15 denotes a transmission support member, which stands on the mounting table 11 located below the front side of the transmission 2 and below the engine member 3. A first jig 16, which will be described later, is engaged with the upper end portion of the transmission support member 15, and is inserted into a through hole 3 a that penetrates the engine member 3 in a vertical direction.
The upper end of the first jig 16 faces the upper surface of the engine member 3, and the lower surface of the transmission 2 is locked and supported.

Next, a first jig as an assembling jig according to the present invention will be described.
The jig and the second jig will be described with reference to FIGS. 3 and 4A and 4B. The first jig 16 is formed in a columnar shape, and can be inserted into the through hole 3 a of the engine member 3.
a, a first locking portion 16b protruding from the upper end surface of the main body 16a and locking the concave portion 2a provided on the lower surface of the transmission 2, and a small diameter formed at a middle part of the outer periphery of the main body 16a, which will be described later A key groove 16c with which the engaging portion 17a of the second jig 17 can be engaged, and a projection radially larger than the through hole 3a of the engine member 3 from an outer peripheral surface below the key groove 16c. A disk-shaped holding portion 16d for holding the engine member 3; and an insertion portion into which a pin portion 15a that is recessed in the lower end surface of the main body portion 16a and protrudes from the upper end portion of the transmission support member 15 is inserted. 16e.

On the other hand, the second jig 17 has a substantially U-shaped engaging portion 17a engageable with a key groove 16c formed in the first jig 16, and a through hole 3a of the engine member 3. A second locking portion 17b that is provided with a diameter larger than that of the second jig 17 and that can be locked to the peripheral portion 3b of the through hole 3a; In a state of engagement with the first jig 16, a spring member 17 c for applying an urging force to the outer periphery of the main body 16 a of the first jig 16 to prevent the second jig 17 from coming off, and And an operation unit 17d which can be attached and detached.

Next, a procedure for mounting the power plant P on the mounting table 11 will be described. The first jig 16 is previously set on the upper end of the transmission support member 15 erected on the mounting table 11. Next, the holes opened in the suspension cross member 4 are inserted into the reference pins 18 of the support members 12b, 12b, and the support members 12a, 12b, 12a,
After the suspension cross member 4 is positioned and mounted on the mounting table 11 by 12b, the through-hole 3a penetrating the engine member 3 is inserted through the first jig 16 installed at the upper end of the transmission support member 15, The front side of the engine member 3 is held on the holding portion 16 d of the first jig 16, and the rear end is bolted to the suspension cross member 4. After the above operation is completed, the first jig 16
The engaging portion 17a of the second jig 17 is engaged with the key groove 16c of the second jig 17 and installed. Next, the power plant P is mounted on the mounting table 11.
In positioning and mounting the upper part, the flange 1 of the oil pan 1 a of the engine 1 is placed on the receiving table 1 erected on the mounting table 11.
3, 14 and a transmission support member 15
Locking part 1 of the first jig 16 previously set on the upper end of the
6b, and the first rubber mount 5 fixed to the rear side of the transmission 2 is bolted to the suspension cross member 4. The power plant P is positioned and mounted on the mounting table 11 according to the above procedure, and the lower surface of the transmission 2 and the first jig 1 at this time are mounted.
FIG.

Next, a procedure for assembling the power plant P to the vehicle body 6 using the above-described assembling apparatus 10 will be described. While the vehicle body 6 is transported along a predetermined route by a trolley conveyor (not shown), the mounting table 11 on which the power plant P is mounted is set on the assembling apparatus 10 correspondingly, and the moving mechanism ( (Not shown). As described above, the state of the engagement between the lower surface of the transmission 2 and the first jig 16 at this time is as shown in FIG. 5, and the transmission 2 is provided at the upper end of the transmission support member 15. While the engine member 3 is supported on the mounting table 11 via the jig 16, the first jig 16 is inserted into the through-hole 3a of the engine member 3, and the peripheral portion 3b of the through-hole 3a is connected to the first jig. 16 holding parts 1
6d is held in contact with the upper surface. At the power plant assembly position, the mounting table 11 is moved upward by the elevating mechanism (not shown) to a position where the engine member 3 and the suspension cross member 4 are fixedly fastened to the vehicle body 6. The front end is bolted to a lower shroud (not shown) of the vehicle body 6, and the left and right ends of the suspension cross member 4 are bolted to the lower frame 8 of the vehicle body 6. One portion of the engine 1 is fixed to the vehicle body by a predetermined jig (not shown), and the power plant P is supported in the falling direction. Thereby, the power plant P is temporarily fixed to the vehicle body 6.

After the power plant P is temporarily fixed to the vehicle body 6, the mounting table 11 is moved downward from the above-mentioned raised position. FIG. 6 shows the locked state between the lower surface of the transmission 2 and the first jig 16 at this time.

By fixing the engine member 3 to the vehicle body 6, the second jig engaged with the key groove 16 c of the first jig 16 is formed.
The second locking portion 17b of the jig 17 contacts the peripheral portion 3b of the through hole 3a of the engine member 3. Thus, the power plant P is positioned on the engine member 3 and is supported by the vehicle body 6 via the first jig 16, the second jig 17, and the engine member 3. The mounting table 1
With the lowering of 1, the lock between the pin portion 15a of the transmission support member 15 and the first locking portion 16b of the first jig 16 is released. On the other hand, the lowered mounting table 11 is transported to a mounting table exchange place by a moving mechanism (not shown), and is replaced on a mounting table on which a power plant P corresponding to a succeeding vehicle body is mounted, and preparation for the next operation is performed. Will be

From the temporarily fixed state of the power plant P, the power plant P and the vehicle body 6 are further bolted at two places via two rubber mounts (not shown) different from the first rubber mount 5. It is finally assembled by fastening. Thereby, the entire connection between the power plant P and the vehicle body 6 is completed, and thereafter, the operator operates the operation unit 17d of the second jig 17
Is pulled along the upper surface of the engine member 3,
The engagement of the engagement portion 17a with the key groove 16c is released, and with this release, the first jig 16 is removed from the lower side of the through hole 3a of the engine member 3.

Thus, the power plant assembling operation is completed. Next, the operation of the present embodiment will be described. In a state where the power plant P is temporarily fixed to the vehicle body 6, the power plant P and the engine member 3 are positioned relative to each other by the first jig 16 and the second jig 17 together with the first rubber mount 5. Thus, the positioning between the power plant P and the vehicle body 6 can be easily performed, and the connection by the rubber mount (not shown) as the final assembly can be smoothly performed.

Further, the engaging portion 17a of the second jig 17 is
By simply releasing the jig 16 from the key groove 16c and removing it, the first jig 16 is also removed from the lower side of the through hole 3a of the engine member 3, and the first jig 16 and the second jig 17 can be easily moved from the positioning state. Can be removed.

[0029]

As described above, according to the present invention, even if the rubber mount for the power plant member is supported at a single point, the power tool and the member can be connected at the time of assembly by the assembly jig. The positioning can be performed reliably, and the power plant can be mounted on the vehicle body while minimizing the increase in cost and the decrease in production efficiency.

[Brief description of the drawings]

FIG. 1 is a front view showing a power plant assembling apparatus on which a power plant according to an embodiment of the present invention is mounted.

FIG. 2 is a side view of the power plant assembling apparatus according to the embodiment of the present invention.

FIG. 3 is a side view of a first jig.

FIG. 4A is a top view of a second jig, and FIG. 4B is a side view of the second jig.

FIG. 5 is an enlarged view of a main part of the assembling apparatus in a state before a temporary fixing in which the power plant is mounted on a mounting table.

FIG. 6 is an enlarged view of a main part of the assembling apparatus in a state where the power plant is temporarily fixed to the vehicle body after the mounting table is lowered.

[Explanation of symbols]

 P power plant 1 engine 2 transmission 3 engine member 3a through hole 4 suspension cross member 6 body 10 assembling device 16 first jig 16b first locking portion 16c key groove 17 second jig 17a engagement portion 17b second engagement Stop

Continued on the front page (72) Inventor Hiroshi Tanaka 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Corporation (72) Inventor Shimichi Takahashi 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Corporation

Claims (4)

[Claims] 1. A power plant assembling apparatus, comprising: a power plant; and a member supporting the power plant and fixed to a vehicle body, and assembling the power plant with the member held together with the power plant. 2. The power plant assembling device according to claim 1, further comprising: an assembling jig that is engaged with the power plant and the member to position the power plant and the member when the power plant and the member are assembled to the vehicle body. 2. An assembling jig, comprising: a first jig having a key groove and having a first locking portion for locking to the power plant; and engaging with a key groove of the first jig. Having a possible engagement portion,
And a second jig provided with a second locking portion for locking to the member, wherein the power plant is engaged with the engaging portion of the second jig in a keyway of the first jig. And the member are positioned relative to each other, and the engagement of the engaging portion of the second jig with the key groove of the first jig is released, thereby positioning the power plant and the member relative to each other. 2. The method of claim 1, wherein
A power plant assembling apparatus as described in the above. 3. A member for holding the member below the power plant, wherein the first jig is formed to be insertable into a vertical through hole provided in the member, and the first jig is provided. The key groove and the first locking portion are arranged above the through hole of the member and between the power plant and the member, and the first locking portion locks the power plant, while the second locking portion locks the power plant. The engagement portion of the jig is engaged with the key groove of the first jig, and the second jig of the second jig is engaged.
3. The power plant assembling apparatus according to claim 2, wherein the locking portion locks the upper surface of a peripheral portion of the through hole of the member to position the power plant and the member relative to each other. 4. A method for assembling a power plant, comprising: a power plant; and a member supporting the power plant and fixed to the vehicle body, wherein the power plant and the member are held together and assembled to the vehicle body. The method for assembling a power plant according to claim 1, wherein the power plant and the member are positioned relative to each other by an assembling jig that is engaged with the member, and the power plant and the member are assembled to the vehicle body.