JPH04252929A - Connecting device for exhaust pipe of internal combustion engine testing apparatus - Google Patents

Abstract

PURPOSE:To obtain a connecting device for exhaust pipes of an internal combustion engine testing apparatus with which attaching/removal of an adapter to/ from an exhaust unit of an internal combustion engine can be carried out easily and quickly. CONSTITUTION:A junction 5 for piping is provided on a bench 2, a flexible heat-resistant hose 10 with a base end connected to an exhaust pipe unit 9 provided on the junction is provided, an adapter 15 which can be freely communicated and attached to an exhaust unit 26 of an internal combustion engine 25 is provided at the tip of the heat-resistant hose 10, and a robot 30 which holds the adapter 15 side to have it attached to/separated from the exhaust unit 26 is provided. Connection/separation of the adapter to/from the exhaust unit can be easily and quickly done without touching the adapter by an operator even if a space is small and the adapter is hot.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is useful for attaching a heat-resistant hose from a testing device to the exhaust section of an internal combustion engine when performing a performance test on an internal combustion engine before it is assembled into a car body, for example in an automobile assembly plant. This invention relates to an exhaust pipe connection device for internal combustion engine testing equipment that is used for connection and separation.

0002

2. Description of the Related Art Conventionally, this type of device has been provided with a configuration as shown in, for example, Japanese Utility Model Application Publication No. 2-122342. This conventional configuration is based on a base that can freely support the internal combustion engine.
A piping junction is provided on the base plate, and a flexible heat-resistant hose whose base end is connected to the exhaust pipe section provided at this junction is installed, and the tip of this heat-resistant hose is connected to the exhaust section of the internal combustion engine. An adapter is provided that allows for free communication and adsorption.

[0003] According to this conventional configuration, after the internal combustion engine is mounted on the base plate, the adapter is placed opposite to the exhaust part, and by moving the adapter toward the exhaust part, the adapter can be communicated with the exhaust part. , the adapter can be fixed by adsorption to the exhaust part. Further, the adapter can be separated by moving the adapter apart using a force that overcomes the adsorption force.

0004

[Problems to be Solved by the Invention] According to the above-mentioned conventional configuration, the adsorption and removal of the adapter from the exhaust part was done manually, and therefore the space was narrow and the adapter was hot when removed. The work could not be done easily or quickly.

SUMMARY OF THE INVENTION An object of the present invention is to provide an exhaust pipe connection device for an internal combustion engine testing device that allows an adapter to be easily and quickly attached to and removed from the exhaust section of an internal combustion engine.

[0006]

[Means for Solving the Problems] In order to achieve the above object, an exhaust pipe connection device for an internal combustion engine testing apparatus according to the present invention includes a bench that can freely support an internal combustion engine with a junction for piping.
A flexible heat-resistant hose whose base end is connected to the exhaust pipe section provided in this junction is provided, and at the tip of this heat-resistant hose,
An adapter that can freely communicate with and can be adsorbed to the exhaust part of an internal combustion engine is provided, and a robot that holds the adapter side and adsorbs and separates the adapter from the exhaust part side is provided.

[0007]

[Operation] According to the structure of the present invention, after the internal combustion engine is supported on the bench, the adapter held by the robot is moved to face the exhaust section by the operation of the robot, and the adapter is moved toward the exhaust part. This adapter can be communicated with the exhaust part, and the adapter can be fixed by adsorption to the exhaust part.

The adapter can be separated by moving the adapter away from the exhaust section using a force that overcomes the adsorption force by reverse operation of the robot.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The bench 2 of the internal combustion engine testing apparatus 1 has a plurality of receivers 4 on its flat base plate 3, and a junction 5 for piping on the front end side. This junction 5 includes a fuel supply pipe section 6, a cooling water supply pipe section 7,
A cooling water drain pipe section 8, an exhaust pipe section 9, etc. are provided in the form of connecting pipes.

A flexible heat-resistant hose 10 whose base end is connected to the exhaust pipe section 9 is made of stainless steel. This heat-resistant hose
The adapter 15 provided at the tip of the slot 10 includes a main body 18 in which a bifurcated flow path 16 and a collective flow path 17 are formed;
A wide-diameter recess 19 formed at the starting end of the bifurcated channel 16 that is the inlet of the main body 18, a magnet 20 embedded in the main body 18 around the recess 19, and a magnet 20 embedded in the main body 18 around the recess 19. 1
9 and a cylindrical sleeve 21 fitted in the sleeve 9 so as to be freely movable.

Here, the sleeve 21 is set to have a length that projects from the starting end surface of the main body 18. Also, the main body 1
The heat-resistant hose is installed at the end of the collective flow path 17, which is the outlet of the flow path 8.
The tip of the base 10 is fitted inside. A tapered surface 22 is formed at the inner bottom of the recess 19 and at a position closer to the center, and the tapered surface 22 slopes outward toward the bottom. A tapered surface 23 inclined in the same direction is formed.

In the adapter 15, the sleeve 21 is fitted to the exhaust section 26 of the internal combustion engine 25, so that the forked flow path 16 communicates with the exhaust path 27, and the magnet 20 is brought into contact with the outer surface 28 of the exhaust section. Fix it by adsorbing it. At this time, a recessed step part 29 is formed at the outer end of the exhaust passage 27, into which the protruding part of the sleeve 21 can be fitted.

The adapter 1 is located near the bench 2.
A robot 30 is provided which holds the 5 side and adsorbs and separates it from the exhaust part 26 side. This robot 30 has an operating arm 31, and a base portion 32 is attached to the free end of the operating arm 31.
A clamp portion 33 is provided which can move three-dimensionally relative to the adapter 15 and can hold the adapter 15 therein.

Next, the operation of connecting and disconnecting the heat-resistant hose 10 to and from the internal combustion engine 25 in the above embodiment will be explained. After placing the internal combustion engine 25 on the receiver 4 of the bench 2,
Various pipes on the junction 5 side are connected to corresponding parts of the internal combustion engine 25. In the exhaust system, first, the adapter 15 held by the clamp part 33 of the robot 30 is moved to the exhaust part 26 by a set three-dimensional movement of the operating arm 31.
and move the adapter 15 closer. As a result, the protruding part of the sleeve 21 fits into the recessed stepped part 29,
As a result, the flow path 16 of the adapter 15 can be communicated with the exhaust path 27 of the exhaust section 26 via the sleeve 21, and the magnet 20 on the adapter 15 side is attracted to the outer surface 28 of the exhaust section to fix the adapter 15 to the exhaust section 26. can be converted into

At this time, the magnet 2 is attached to the outer surface 28 of the exhaust part.
Due to the adsorption force A of 0, a wedge force B acts obliquely outward on the sleeve 21 via the tapered surface 22 and the tapered surface 23, and this causes the outer end 21a of the protruding portion of the sleeve 21 to be pushed into the recess of the exhaust portion 26. The stepped portion forming wall portion 26a is pressed into contact with the protruding portion outer end 21a and the recessed stepped portion forming wall portion 26 by this pressure contact force.
A frictional force is generated between the two and a, and the above-mentioned connection can be firmly fixed.

In this way, the internal combustion engine 25 is sent to the test apparatus 1, and various piping on the junction 5 side is connected to the internal combustion engine 25.
In this state, the internal combustion engine 25 is operated to proceed to the intended test. Exhaust gas generated by the internal combustion engine 25 and discharged from the exhaust section 26 is recovered via the heat-resistant hose 10 or the like.

After the test, the adapter 15 can be separated by moving the adapter 15 away from the exhaust section 26 using a force that overcomes the attraction force of the magnet 20 by reverse operation of the robot 30. When the adapter 15 is made of aluminum, sintered metal, ceramic, etc., it can be made lighter.

[0018]

According to the present invention having the above structure, after the internal combustion engine is supported on a bench, the adapter held by the robot is moved to face the exhaust section by the operation of the robot,
By moving the adapter closer, the adapter can be communicated with the exhaust section, and the adapter can be fixed by adsorption to the exhaust section. Further, the adapter can be separated by moving the adapter away from the exhaust section using a force that overcomes the adsorption force by reverse operation of the robot.

[0019] Therefore, the work of connecting and separating the adapter is as follows:
Even if the space is small or the adapter is hot, the robot can operate the robot easily and quickly without having to touch the adapter.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the present invention in a testable state.

FIG. 2 is a front view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a longitudinal cross-sectional view of the connecting portion in a separated state.

FIG. 5 is a longitudinal cross-sectional view of the connecting portion in a connected state.

FIG. 6 is a plan view of the adapter section.

FIG. 7 is a vertical cross-sectional view of a main part showing the wedge effect of the connection part.

[Explanation of symbols]

1 Internal combustion engine test equipment 2 Bench 5　　　　　Jankusion　 9 Exhaust pipe section 10 Heat resistant hose 15 Adapter 18 Main body 19 Recessed part 20 Magnet 21 Sleeve 21a Outer end of protrusion 22 Tapered surface 23 Tapered surface 25 Internal combustion engine 26 Exhaust part 26a Recessed step forming wall part 28 Exhaust part outer surface 29 Recessed stepped part 30 Robot 31 Working arm 33 Clamp part

Claims (1)

[Claims] [Claim 1] A piping junction is provided on a bench capable of supporting an internal combustion engine, and a flexible heat-resistant hose whose proximal end is connected to an exhaust pipe section provided in the junction is provided,
An internal combustion engine characterized in that an adapter is provided at the tip of the heat-resistant hose that can freely communicate with the exhaust part of the internal combustion engine and can be freely adsorbed, and a robot is provided that holds the adapter side and adsorbs and separates it from the exhaust part side. Exhaust pipe connection device for test equipment.