JPH0694577A - Internal combustion engine tester with cover device - Google Patents

Abstract

PURPOSE:To reduce a cover space by providing a cover composed of a pair of a fan-shaped side plate and a circular arc-shaped outer plate and rotatably, developably and reducibly forming the cover as an inner edge end part of the side plate part is made a supporting point. CONSTITUTION:A cover 23 is a multi-stage collapsible type, divided into four parts of a first stage cover part 23a to a fourth stage cover part 23d, which are formed of fan-shaped small side plate parts 24a-24d and small outer plate parts 25a-25d between the outer edges thereof. In addition, the cover 23 is rotatably, developably and reduciably formed around the axis center of a fulcrum 27. At first, when the cover 23 is opened, the cover part 23a is rotated up to the side of a pit 44 by an electric motor. As a result. engagement of an engaged pawl provided on the outer plate parts 25a-25d is slipped, the cover parts 23b-23d are rotated by their dead load, the cover 23 is collapsed, housed in the pit 44 and a space of the cover 23 can be reduced. When the cover 23 is closed, the cover part 23a is rotated up to the side of a control part 8 with the electric motor. At this time, a locking pawl 29 of the cover part 23a is engaged with a pawl 30 to be locked of the cover part 23b, which is rotated. Successively, the cover parts 23c, 23d are rotated and the cover 23 can be stopped at a desired position or can be shut down wholly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal combustion engine test apparatus for performing a performance test on an internal combustion engine before it is incorporated into a vehicle body, for example, in an automobile assembly plant.

[0002]

2. Description of the Related Art Conventionally, as an internal combustion engine test apparatus of this type, there are those shown in FIGS. 17 and 18, for example. That is, on the base 61, the support legs for supporting the test internal combustion engine 62 are provided.
63 are erected. The internal combustion engine 62 supported by the support legs 63 is covered with a cover device 64.

That is, the cover device 64 is composed of fixed covers 65 and 66 that cover the front and rear of the supported internal combustion engine 62, and movable covers 67 that cover both sides and the upper side of the internal combustion engine 62. The fixed covers 65 and 66 are fixedly erected on the base 61. Further, the moving cover 67 is formed in a front view gate shape by the side plate portions 68 and the top plate portion 69 which is continuously provided between the upper ends of the side plate portions 68. At the lower end of the moving cover 67, wheels 71 traveling on rails 70 laid on the base 61 side are attached. Accordingly, the movable cover 67 is movable between the closed position A between the fixed covers 65 and 66 and the open position B behind the rear fixed cover 66 while being supported and guided by the rail 70 via the wheels 71. Is. Incidentally, 72 is an air cylinder device for moving the moving cover 67.

According to this, when the internal combustion engine 62 is tested, the movable cover 67 is closed at the closed position A as shown by the solid line in FIG.
Slide to and close. This allows the internal combustion engine
The front and rear of 62 are covered with fixed covers 65 and 66, and both sides and above are covered with movable covers 67. After that, the internal combustion engine 62 is started to perform various tests. At this time, the internal combustion engine 62
The noise generated by the cover device 64 is soundproofed.
After the test, the moving cover 67 is
Is slid to the open position B and opened, and the internal combustion engine 62 is taken out upward between the fixed covers 65 and 66.

[0005]

However, according to the above-mentioned conventional type, since the movable cover 67 is slid rearward and opened, the length and width of the movable cover 67 are rearward of the test space of the internal combustion engine 62. There was a problem that a cover open space of about the same size as above was required, and the installation space for the test equipment became longer in the front and back.

The present invention solves the above problems, and an object of the present invention is to provide an internal combustion engine test apparatus with a cover device that can reduce the space occupied by the cover when the cover is opened.

[0007]

In order to solve the above-mentioned problems, an internal combustion engine testing apparatus with a cover device according to the first aspect of the present invention has a control unit provided upright on the rear end side of an internal combustion engine support base to support the internal combustion engine. A cover composed of a pair of fan-shaped side plate portions that can be positioned on both sides of the table and an arc-shaped outer plate portion provided between the outer edges of these side plate portions is provided, and this cover is attached to the inner edge ends of the side plate portions. The fulcrum is formed so as to be rotatable and expandable and contractible in the rotating direction.

The internal combustion engine test apparatus with the cover device according to the second aspect of the present invention has the cover formed in a multi-stage foldable type. The internal combustion engine test apparatus with the cover device according to the third aspect of the present invention has the cover formed in a bellows shape.

[0009]

According to the structure of the first aspect of the present invention, by rotating the cover in one direction, the cover is contracted and opened in the rotating direction. As a result, the internal combustion engine can be carried in and out of the internal combustion engine support base. At this time, since the cover is reduced, the space occupied by the cover is reduced. Also, by rotating the cover to the other side, the cover is expanded in the rotation direction and closed. As a result, the internal combustion engine support base is covered with the cover.

According to the structure of the second invention, the cover is folded and opened by rotating the cover to one side. At this time, since the cover is folded in multiple stages, the space occupied by the cover is reduced. By rotating the cover to the other side, the folded cover is expanded in the rotation direction and closed. As a result, the internal combustion engine support base is covered with the cover.

According to the structure of the third aspect, by rotating the cover to one side, the bellows are compressed and the cover is opened, so that the space occupied by the cover is reduced. Further, by rotating the cover to the other side, the compressed cover is expanded in the rotating direction and closed. As a result, the internal combustion engine support base is covered with the cover.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 9, reference numeral 1 denotes a turntable, which is driven by a rotation driving device (not shown) to rotate intermittently around a vertical axis 2 at a set angle α. The test devices 4 of the internal combustion engine 3 are radially arranged at a plurality of positions on the turntable 1 at predetermined angular intervals in the circumferential direction.
Reference numeral 5 is a carry-in device for supplying the internal combustion engine 3 to the test device 4, and 6 is a carry-out device for taking out the internal combustion engine 3 from the test device 4.

As shown in FIG. 7 and FIG.
Is composed of an internal combustion engine support base 7 and a control unit 8 standing from the rear end side of the internal combustion engine support base 7. The internal combustion engine support base 7 includes a base frame 9 disposed on the upper portion of the turntable 1, a free roller conveyor 10 provided on the base frame 9, and the free roller conveyor 10
It comprises a retracting device 12 for retracting the pallet 11 on the top. The base frame 9 is formed of a pair of left and right frame members 15 and a base plate 16 installed between the frame members 15. The free roller conveyor 10 has a plurality of left and right free rollers 17. Further, the retracting device 12 is installed in the central portion between both free rollers 17, and is movable on the movable body 19 which is supported and guided by a pair of left and right guide rails 18 and is movable in the front-rear direction. It is provided with a locking pin 20 which can be retracted and provided. The locking pin 20 is formed so as to project above the moving body 19 and retract into the moving body 19 by a cylinder device (not shown). Further, the pallet 11 is formed with a pin hole (not shown) into which the protruding locking pin 20 is inserted.

The control unit 8 is formed in a rectangular parallelepiped shape having substantially the same width as that of the internal combustion engine support base 7, and instruments and operation panels are provided on the front and side faces thereof.
The internal combustion engine 3 is supported on the pallet 11 via support legs 21.

As shown in FIGS. 1 to 3, reference numeral 23 denotes a cover, which is a pair of left and right fan-shaped side plate portions 24 which can be freely positioned on both sides of the internal combustion engine support base 7, and between outer edges of these side plate portions 24. It is formed of an arc-shaped outer plate portion 25 provided. The cover 23 is a multi-stage foldable type, and is divided into four parts from a first stage cover part 23a located on the opening direction side to a fourth stage cover part 23d located on the closing direction side. Each of these cover portions 23a-23
d is each of four small side plate portions 24a to 24d,
It is formed of four small outer plate portions 25a to 25d. Further, each of the small side plate portions 24a to 24c is formed with a window 26 covered with a transparent plate such as a plastic material.

The cover 23 is formed so as to be rotatable about a horizontal axis 28 as a fulcrum, which is an inner edge of each of the small side plates 24a to 24d, and is expanded in the rotating direction. It is formed so that it can be reduced. That is, each cover portion 23
The distance between the inner side surfaces of a to 23d and the radius are largest in the first-stage cover portion 23a, and the second-stage cover portion 23b and the third-stage cover portion 23c.
And the fourth step cover portion 23d is formed to be the smallest. In addition, as shown in FIG.
Locking claws 29 that are bent toward the lateral axis 28 are formed at the open ends of a to 25c. Also, each small outer plate 25b
Enclosed claws 30 that can be engaged with the respective locking claws 29 are formed at the closing ends of 25d. Accordingly, the cover 23 can be folded with the first-stage cover portion 23a as the outermost side and the fourth-stage cover portion 23d as the innermost side.

As shown in FIG. 5, each of the small side plate portions 24a to 24d.
The point is that the pair of left and right rotary shafts 33 rotatably provided on the base frame 9 are rotatably fitted on the outer ends thereof. At this time, only the outermost small side plates 24a are interlocked with the rotary shaft 33 via the connecting key 34. A first gear 35 is provided at the inner end of each rotary shaft 33. An electric motor 36 for rotating the first-stage cover portion 23a is attached to the lower surface of the base plate 16, and a drive gear 37 is provided on the drive shaft of the electric motor 36. Then, the both rotary shafts 33
Is a second gear 38 meshing with each first gear 35 and the drive gear.
It is interlocked with the electric motor 36 via an interlocking rotary shaft 40 having a third gear 39 meshing with 37. The interlocking rotary shaft 40 is provided on the lower surface of the base plate 16 and is rotatable around a horizontal axis 41.

As shown in FIGS. 6 to 8, a pit 44 is formed below the internal combustion engine support base 7 for maintenance of the piping system and the folded cover 23 is stored in the pit 44. To be done. Further, stopper bodies 45 which can freely come into contact with and separate from the lower ends of the small side plate portions 24a to 24d of the folded cover 23 are attached to both inner side surfaces of the pit 44, and the base frame 9 is supported in the pit 44. A supporting leg 46 is installed.

The operation of the above structure will be described below.
As shown in FIG. 9, the internal combustion engine 3 is supplied to the test device 4 by the carry-in device 5 via the pallet 11, and during the intermittent rotation of the turntable 1, warm-up operation, idle adjustment, and various tests are performed. At this time, as shown in FIGS. 7 and 8, after the cover 23 is opened, the retraction device 12 is moved forward while being supported and guided by the guide rail 18, and the locking pin 20 is moved.
Projects upward and is inserted into a pin hole (not shown) of the pallet 11. Then, the retraction device 12 moves rearward and the pallet 11 is retracted from the carry-in device 5 and supported on the internal combustion engine support base 7, whereby the internal combustion engine 3 is supported on the internal combustion engine support base 7 via the pallet 11. Then, as shown in FIG. 1, the cover 23 is closed. After the test is completed, the internal combustion engine 3 is taken out of the test device 4 by the carry-out device 6 via the pallet 11.

At the start of the test, as shown in FIG. 5, by driving the electric motor 36, the rotation of the electric motor 36 passes through the drive gear 37, the third gear 39, the second gear 38, and the first gear 35, and the rotation shaft. Transmitted to 33. Then, the rotating shaft 33 is opened and rotated in one direction about the horizontal axis 28. As a result, both the small side plate portions 24a rotate together with the rotary shaft 33, so that the first-stage cover portion 23a rotates to one side (pit 44 side). At this time, as shown by the phantom line in FIG. 4, the locking claws of the first-stage cover portion 23a
Since 29 is separated from the locked claw 30 of the second-stage cover portion 23b, the second-stage cover portion 23b rotates to one side about the horizontal axis 28 by its own weight. Then, the second stage cover portion 23
Similarly to b, the locking claws 29 are separated from the locked claws 30, so that the third-stage cover portion 23c and the fourth-stage cover portion 23 are separated.
The d rotates by its own weight to one side about the horizontal axis 28. In this way, the second step is performed in conjunction with the first-stage cover portion 23a.
By folding and contracting the fourth-stage cover portions 23b to 23d, the cover 23 is opened as shown in FIGS. 7 and 8, and the first-stage cover portion 23a is the outermost side. It is stored in the pit 44 in a folded state with the innermost part as the innermost part.
At this time, as shown by the solid line in FIG.
Since the lower end of d is supported by abutting against the stopper body 45, the rotation of each of the cover portions 23a to 23d is restricted by the stopper body 45.

As described above, when the cover 23 is opened, the cover 23 is stored in the pit 44 in a folded state, so that the space occupied by the cover 23 is reduced and a space for maintenance is provided inside the pit 44. It can be secured wide enough.

When the cover 23 is closed, the electric motor
By rotating the 36 in the reverse direction, the rotary shaft 33 is closed and rotated to the other centering on the horizontal axis 28. As a result, both the small side plate portions 24a rotate together with the rotary shaft 33, so that the first-stage cover portion 23a rotates to the other side (control unit 8 side). At this time, as shown by the solid line in FIG. 4, the locking claw 29 of the first-stage cover portion 23a.
Engages with the locked claws 30 of the second-stage cover portion 23b, so that the second-stage cover portion 23b also rotates to the other centering on the horizontal axis 28. Then, in the same manner as the second stage cover portion 23b,
The third-stage cover portion 23c and the fourth-stage cover portion 23d are also rotated to the other centering on the left-right axis 28 by the engagement of the locking claws 29 with the locked claws 30. In this way, the second to fourth stage cover portions 23b to 23d are interlocked with the first stage cover portion 23a.
By expanding, cover as shown in Fig. 1 and Fig. 2.
23 is closed, and the upper side of the internal combustion engine support base 7 is covered by the cover 23. As a result, soundproofing and dustproofing can be performed during the test, and even if an abnormality occurs in the internal combustion engine 3, the internal combustion engine 3 is separated from the outside by the cover 23.
The safety of the outside of the cover 23 is maintained.

In the above-described embodiment, the first stage cover portion 23a has the largest inner space and radius between the cover portions 23a to 23d, and the second stage cover portion 23b and the third stage cover portion 23c are gradually smaller in this order. The fourth-stage cover portion 23d is formed to be the smallest, but as shown in FIG.
a is the smallest, the second stage cover portion 23b, the third stage cover portion
23c may be formed in order, and the fourth-stage cover portion 23d may be formed largest.

In the above embodiment, the cover 23 is the first stage cover portion.
Although it is divided into four parts from 23a to the fourth-stage cover part 23d, this is not limited to four parts and may be a plurality of parts. Also,
In the above-mentioned embodiment, the internal combustion engine test device 4 is circumferentially arranged on the turntable 1, but it may be arranged in series on a plurality of or a single fixed base.

Another embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 11 and 12, reference numeral 51 denotes a cover, which is provided between a pair of left and right fan-shaped side plate portions 52 which can be freely positioned on both sides of the internal combustion engine support base 7 and between outer edges of these side plate portions 52. It is formed of an arc-shaped outer plate portion 53.
The side plate portion 52 and the outer plate portion 53 are formed in a bellows shape with a heat resistant cloth or the like. Further, at both ends of the cover 51, gate-shaped frames 54 and 55 are attached in a front view.

As shown in FIG. 13, the center of the side plate portion 52, that is, the inner ends of the frames 54 and 55 are rotated to the outer ends of a pair of left and right rotating shafts 33 rotatably provided on the base frame 9. It is fitted so that it can move freely. Of these, the inner end of the rotating frame 54 attached to the closing direction is connected to the rotating shaft via the connecting key 34.
It is linked to 33. Further, as shown in FIGS. 11 and 14, an outer side 55a of the fixed frame 55 attached to the opening side.
Is a locking device 56 including a fixing plate 56a and a machine screw 56b.
It is fixed to the front end surface of the internal combustion engine support base 7. As a result, the cover 51 is formed so as to be rotatable around the lateral axis 28 with the pivot of the side plate portion 52 as the fulcrum 27.
It is formed so that it can be expanded and contracted in the rotation direction. In addition, 36 is a cover
It is an electric motor that rotates 51.

The operation of the above structure will be described below.
At the start of the test, by driving the electric motor 36, the rotating shaft 33 is opened and rotated in one direction around the horizontal axis 28. As a result, as shown by the solid line in FIG. 14 and FIG.
Since it pivots to the side, the bellows-shaped side plate portion 52 and the outer plate portion 53 are compressed and contracted, and the cover 51 is opened. In this way, when the cover 51 is opened, the space occupied by the cover 51 is reduced.

When the cover 51 is closed, the electric motor
By rotating the 36 in the reverse direction, the rotary shaft 33 is closed and rotated to the other centering on the horizontal axis 28. As a result, as shown by the phantom lines in FIGS. 11 and 14, the rotating frame 54 rotates together with the rotating shaft 33 toward the control unit 8 side, so that the bellows-shaped side plate portion 52 and the outer plate portion 53 are expanded. The cover 51 is closed. As a result, the upper side of the internal combustion engine support base 7 is covered by the cover 51, which can be soundproof and dustproof during the test, and the internal combustion engine 3 can be separated from the outside by the cover 51 even if an abnormality occurs in the internal combustion engine 3. Therefore, the safety of the outside of the cover 51 is maintained.

In the above embodiment, the side plate portion 52 and the outer plate portion 53 are formed in a bellows shape with a heat resistant cloth or the like.
Alternatively, a window may be formed in a part of the outer plate portion 53 with a transparent heat resistant sheet or the like.

[0030]

As described above, according to the first aspect of the present invention, the cover is formed so as to be expandable and contractible in the rotating direction, and the cover is rotated in one direction to reduce the cover in the rotating direction. It can be opened. As a result, when the cover is opened, the space occupied by the cover is reduced, so that the installation space for the test apparatus can be made compact.

According to the second aspect of the present invention, the cover is formed in a multi-folding type, and the cover is rotated to one side,
The cover can be folded in multiple stages to open. As a result, when the cover is opened, the space occupied by the cover is reduced, so that the installation space for the test apparatus can be made compact.

According to the third aspect of the present invention, by forming the cover into a bellows shape and rotating the cover in one direction, the bellows are compressed and the cover is opened. As a result, when the cover is opened, the space occupied by the cover is reduced, so that the installation space for the test apparatus can be made compact.

[Brief description of drawings]

FIG. 1 is a perspective view of an internal combustion engine test apparatus with a multi-stage folding cover closed according to an embodiment of the present invention.

FIG. 2 is a vertical sectional side view of a multi-stage foldable cover.

FIG. 3 is a view on arrow AA in FIG.

4 is an enlarged view of part B in FIG.

FIG. 5 is a front view showing a rotating mechanism of the multi-stage folding cover.

FIG. 6 is a partially cutaway side view of the internal combustion engine test apparatus.

FIG. 7 is a perspective view of the internal combustion engine test apparatus with the multi-stage foldable cover open.

FIG. 8 is a view on arrow CC in FIG.

FIG. 9 is a plan view showing an arrangement form of an internal combustion engine test apparatus.

FIG. 10 is a perspective view of the internal combustion engine test apparatus with the multi-stage foldable cover closed.

FIG. 11 is a perspective view of an internal combustion engine test apparatus with a bellows type cover closed according to another embodiment of the present invention.

FIG. 12 is a perspective view of a bellows type cover.

FIG. 13 is a front view showing a rotating mechanism of the bellows type cover.

FIG. 14 is a partially cutaway side view of the internal combustion engine test apparatus.

FIG. 15 is a perspective view of the internal combustion engine test device with the bellows type cover opened.

16 is a view taken along the line DD in FIG.

FIG. 17 is a vertical sectional side view of an internal combustion engine test device with a cover device in a conventional example.

FIG. 18 is a view taken along the line EE in FIG.

[Explanation of symbols]

 4 Internal Combustion Engine Test Device 7 Internal Combustion Engine Support 8 Control Unit 23 Cover 24 Side Plate 25 Outer Plate 27 Support Point 51 Cover 52 Side Plate 53 Outer Plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazuhiko Miyoshi, 3-2-11 Minejima, Nishiyodogawa-ku, Osaka-shi, Osaka Prefecture Daifuku Co., Ltd. (72) Junzo Iwaoka 3--2, Mineshima, Nishiyodogawa-ku, Osaka-shi, Osaka No. 11 Daifuku Co., Ltd.

Claims (3)

[Claims] 1. A control unit is provided upright on the rear end side of an internal combustion engine support base, and is provided between a pair of fan-shaped side plate parts that can be positioned on both sides of the internal combustion engine support base, and the outer edges of these side plate parts. An internal combustion engine with a cover device, characterized in that a cover composed of a circular arc-shaped outer plate portion is provided, and the cover is formed so as to be rotatable around the inner edge end of the side plate portion as a fulcrum and expandable and contractible in the rotating direction. Institutional testing equipment. 2. The internal combustion engine test apparatus with a cover device according to claim 1, wherein the cover is formed in a multi-folding type. 3. The internal combustion engine test apparatus with the cover device according to claim 1, wherein the cover is formed in a bellows shape.