JP2677040B2 - Carrier for engine assembly - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle for assembling an engine used in an engine assembly line for an automobile or the like.

[0002]

2. Description of the Related Art Conventionally, a vehicle for assembling an engine of this type is
For example, it is provided with a carrier truck which is self-propelled by engaging a guide rail laid on the floor surface, and an attachment for engine support is mounted on a support stand provided on the upper surface side of the carrier truck.

However, in the engine body assembly line, for example, when the cylinder head is assembled to the cylinder block, the cylinder block is placed in a normal standing posture on the support base of the carrier, and the cylinder block The lower part is supported by an attachment for supporting the lower part of the cylinder block which is provided in advance on the support table, and the carriage is moved to the head assembly station in such a state,
Therefore, the cylinder head is attached to the top of the cylinder block. After that, when assembling the oil pan to this cylinder block, first incline the cylinder block so that the upper and lower parts are upside down, and then mount it on the support base of another carrier with an attachment for supporting the upper part of the cylinder block. The transfer cart is transferred to the upper part, and in a state where it is supported by the attachment for supporting the upper part thereof, the other carriage is moved to the oil pan assembling station to assemble the oil pan.

[0004]

In the conventional vehicle for assembling the engine, since the support base is provided on the upper portion of the carrier as described above, when the cylinder head is assembled to the cylinder block in the engine assembly line. In this case, the mounting position of this cylinder head was considerably high and the workability was very poor. Also, when assembling a manifold or the like on the side surface of the cylinder block, although the worker can assemble at a certain position by rotating the turntable, the carrier truck itself has a considerable width. The worker's facing distance to the cylinder block on the turntable is considerably wide, and workability is poor from this point as well.

Further, in the conventional transport vehicle, each transport vehicle is provided with an attachment for supporting the engine only at one place on the upper surface side of the support platform, so that the mounting position is vertically with respect to the cylinder block. In the case of assembling different cylinder heads and oil pans facing each other, separate carriages are required.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, the present invention provides a monorail type carrier truck which is self-propelled along a guide rail, and a horizontal carriage laterally extending from the carrier carriage. And a horizontal support that is cantilevered with respect to the carrier and is supported so as to be rotatable around a horizontal axis, and the engine is supported on the upper surface and the lower surface of the horizontal support, respectively. The present invention proposes a vehicle for engine assembly, which is provided with a vehicle attachment.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, reference numeral 1 is a carrier truck that is self-propelled along a guide rail 2, and 3 is a horizontal support base. Then, it laterally juts out from the carrier 1 and is supported in a cantilevered manner with respect to the carrier 1. Horizontal support stand 3
A turntable 4 rotatable around a vertical axis X is provided on the top, and an engine support attachment 5A is provided on the lower surface of the horizontal support base 3, and another engine support attachment 5B is provided on the upper surface of the turntable 4. It is provided. Incidentally, the attachment 5A supports the cylinder head CH assembled in the cylinder block CB,
Further, the attachment 5B supports the lower part of the cylinder block CB.

The above structure will be described in more detail.
The carrier vehicle 1 is composed of a drive trolley 6 and a driven trolley 7 arranged at front and rear positions in the traveling direction, and a machine frame 8 connecting them, and the drive trolley 6 rolls a support frame 9 and an upper surface of the guide rail 2. Moving drive wheel 10 and the guide rail 2
Vertical axis roller 11 for holding steady, the drive wheel 1
The driven trolley 8 includes a support frame 13, idler wheels 14 rolling on the upper surface of the guide rail 2, a vertical axis roller 15 for steady rest, and the like. Composed. Also, drive trolley 6
The driven trolley 7 and the driven trolley 7 are each rotatably connected to the machine frame 8 through a bearing unit 16 about its vertical axis so that the driven trolley 7 can run on a curved portion of the guide rail 2. The drive trolley 6 is provided with a current collecting unit 17, which is arranged so as to be in sliding contact with a power supply line 18 laid on the side surface of the guide rail 2, and the electric motor 12 and other control devices. Supply the power supply voltage, etc. The guide rail 2 is mounted at a fixed height by rail mounting bases 19 provided at a plurality of locations.

The horizontal support base 3 is integrally connected to the lower end of the vertical support frame 20 and forms an L-shaped support frame 21 together with the vertical support frame 20.
It itself is provided at a low position near the floor surface F.
In addition, a swing for driving the horizontal support base 3 around the vertical axis Y between the vertical support frame 20 of the L-shaped support frame 21 and the vertical frame portion 8a of the machine frame 8 of the transport carriage 1. The driving means 22 is provided. As the turning drive means 22, an air drive system or a mechanical drive system can be appropriately selected and adopted as necessary in addition to the electric system.
Direct drive motor, AC in case of electric system
Servo motors (including pulse motors), geared motors with brakes, and the like can be used. Further, for example, a high rotor system can be used as an air drive system and a guide roller system including a Geneva system can be used as a mechanical drive system.

The turntable 4 is driven by a rotation driving means 23 provided on the horizontal support base 3. As the rotation driving means 23, an electric system is used as in the turning driving means 22. An air drive system or a machine drive system can be appropriately adopted, and in the case of an electric system, a direct drive motor, an AC servomotor, a geared motor with a brake, or the like can be used.

In using the engine assembling vehicle having the above-described structure, as shown in FIG. 1, the cylinder block CB of the engine main body is supported on the turntable 4 on the horizontal support base 3 and the lower cylinder block is supported. While being supported by the attachment 5B and a predetermined clamp (not shown), the carriage 1 is moved along the guide rail 2 to, for example, the head assembly station, and the cylinder head CH is assembled therein. In this case, since the horizontal support base 3 is located at such a low position as to approach the floor surface F, even if the height of the cylinder block CB itself is considerably high, the cylinders supported from the floor surface F on the turntable 4 are supported. The height to the top of the block CB is significantly lower than that of the conventional carrier vehicle, and therefore the work of assembling the cylinder head CH becomes very easy.

When a manifold, for example, is mounted on a required side surface portion of the cylinder block CB supported on the turntable 4, the rotary drive means 23 is operated so that the manifold mounting portion of the cylinder block CB is operated. Work is performed by appropriately rotating the turntable 4 so that it is on the side facing the worker. In this case, unlike the conventional carrier, there is no carrier near the worker's feet, and only the horizontal support base 3 extending laterally from the carrier 1 exists, so that the worker and the cylinder block do not exist. The distance between the side surface of the CB and the side surface of the CB is shortened, so that the manifold is easily assembled.

Next, as described above, the cylinder head C
When the oil pan OP is assembled to the cylinder block CB to which H is assembled, the cylinder block CB is temporarily removed from the horizontal support base 3 of the carrier vehicle, and the horizontal support base 3 is horizontally moved by the turning drive means 22. 180 around axis Y
The gyro is rotated, and the attachment 5A for supporting the cylinder head which has been in the downward posture on the lower surface side of the horizontal support stand 3 until then (see FIG. 1) is in the upward posture as shown in FIG. Then, the cylinder block CB is set upside down, and the cylinder head CH already assembled to the cylinder block CB is supported by the attachment 5A via a predetermined clamp (not shown). Attach the oil pan OP to CB.

1 to 3 is a vehicle for assembling an engine, in which the horizontal support base 3 is rotatable and revolvable around a vertical axis X and a horizontal axis Y, respectively. , The horizontal support base 3 has the vertical axis X and the horizontal axis Y as described above.
In addition to being rotatable and revolvable around, the horizontal support base 3 can move up and down with respect to the transport carriage 1 for an engine assembly transport vehicle.

That is, a swing drive means 22 for swinging the horizontal support base 3 around the horizontal axis Y is provided between the vertical support frame 20 of the L-shaped support frame 21 and the lift base frame 24. The frame 24 can be moved up and down by a lifting drive mechanism 25. The lift drive mechanism 25 includes a rotation drive means 26 provided on the upper portion of the machine frame 8, a vertically extending ball screw shaft 27 rotationally driven by the rotation drive means 26, and the lift base frame 24.
And an elevating block 24a which is attached to the ball screw shaft 27 and is guided and supported in a non-rotatable manner by a guide member (not shown) provided on the machine frame 8 side. When the ball screw shaft 27 is rotated by driving 26, the elevating base frame 24 moves up and down, and thus the horizontal support base 3 moves up and down. As the rotation driving means 26 of the lifting drive mechanism 25, an electric driving means such as a servo motor (including a pulse motor) or a motor with a brake by an inverter control method, or an air driving rotation driving means such as an air motor with a brake is used. Can be used.

Further, as the elevating mechanism 25, a single linear motion mechanism such as an air cylinder with a brake can be adopted instead of the mechanism composed of the combination of the rotary motion mechanism and the linear motion mechanism as described above. .

As described above, according to the vehicle for assembling the engine of FIG. 4, since the horizontal support base 3 can be lifted and lowered by the lifting mechanism 25, the height of the operator who assembles the engine or the height of the engine mounting position is high. Accordingly, the horizontal support base 3 can be arbitrarily moved up and down, and the work can always be performed at a desired work position. In FIG. 4, a state in which the horizontal support base 3 is lifted up is shown by a virtual line.

In the embodiment described above, FIGS.
Also, as shown in FIG. 4, only the attachment 5B is provided on the upper surface of the turntable 4 and only the attachment 5A is provided on the lower surface of the horizontal support base 3, but the upper surface of the turntable 4 and the horizontal support base 3 are not provided. Two kinds of attachments may be provided in parallel on the lower surface.

[0019]

According to the vehicle for assembling an engine of the present invention, the horizontal support table for mounting the engine to be assembled is horizontally cantilevered laterally from the monorail type carrier vehicle and cantilevered to the carrier vehicle. Since it is supported like a shape, the working position can be lowered sufficiently, and
The facing distance between the engine on the horizontal support and the worker can be shortened. Therefore, the work is very easy to perform, and the workability can be greatly improved.

Moreover, in this transport vehicle, since the engine mounting attachments are provided on the upper surface side and the lower surface side of the horizontal support base, for example, in the engine body assembly line, the assembly position to the cylinder block is the cylinder head and In the case where the cylinder block is vertically opposed to the oil pan, for example, one of the attachments on both the upper and lower sides of the horizontal support base is used as the cylinder block lower support attachment, and the other attachment is the cylinder head support attachment. Can be Therefore, by reversing the horizontal support table appropriately, two types of parts with different assembly positions can be created.
It is possible to assemble with the same carrier without changing the carrier.

According to the vehicle for assembling an engine of the present invention, a turntable rotatable about a vertical axis is provided on the horizontal support base, and the engine support attachment on the upper surface of the horizontal support base is provided on the turntable. By providing the engine, the engine supported on the turntable can be appropriately rotated, and therefore, it becomes possible to always perform work close to the operator.

Furthermore, according to the vehicle for assembling the engine of the present invention, since the horizontal support table is supported so as to be able to move up and down with respect to the vehicle, the height can be adjusted according to the worker's height and the actual mounting height position. The work position can be arbitrarily set by the above, and thereby the workability can be further improved.

[Brief description of the drawings]

FIG. 1 is a front view of a vehicle for engine assembly according to the present invention.

FIG. 2 is a front view showing a usage state in which a horizontal support base of the above-mentioned transport vehicle is reversed.

3 is a side view of the carrier vehicle of FIG. 1. FIG.

FIG. 4 is a front view of another vehicle for assembling an engine according to the present invention.

[Explanation of symbols]

 1 Transport Car 2 Guide Rail 3 Horizontal Support 4 Turntable 5A Engine Support Attachment 5B Engine Support Attachment 22 Turning Drive Means 23 Rotation Drive Means 25 Lifting Drive Mechanism

Claims (3)

(57) [Claims] Claims: 1. A monorail type carrier truck which is self-propelled along a guide rail, and a laterally projecting lateral side from the carrier cart, which is supported in a cantilever manner with respect to the carrier cart and has a horizontal axis. And a horizontal support base rotatably supported on the horizontal support base, and the engine support carrier is provided with engine support attachments on the upper surface side and the lower surface side of the horizontal support base. 2. The engine according to claim 1, wherein a turntable rotatable around a vertical axis is provided on the horizontal support, and an engine support attachment on the upper surface of the horizontal support is provided on the turntable. Transport vehicle for assembly. 3. The engine assembly carrier according to claim 1, wherein the horizontal support base is supported so as to be able to move up and down with respect to the carrier carriage.