JPH03206937A - Connecting apparatus of exhaust pipe for testing engine - Google Patents

Abstract

PURPOSE:To introduce the exhaust gas from an exhaust pipe at the engine side to a fixed exhaust pipe at the testing apparatus of the engine by providing a test engine mounted on a pallet with an exhaust pipe which has a connecting end opened upwards. CONSTITUTION:A test engine placed on a pallet 3 has an exhaust pipe 36 with a connecting end opened upward. Therefore, even if the position and height of the opening end of the exhaust pipe 36 are not fixed, an opening end 46a of an exhaust pipe 44 can be connected with the opening end of the exhaust pipe 36 owing to the rotation and contraction around the vertical axis of an extensible horizontal exhaust pipe 41 and an up-and-down movement of the downward opening end 46a of the exhaust pipe 44 coupled from a front end of the exhaust pipe 41. The exhaust gas from the exhaust pipe 36 can be introduced to a fixed exhaust pipe 54 having a connecting end 37a opened rearward through the exhaust pipes 44 and 41. Accordingly, when the pallet 3 is carried to a predetermined position of the apparatus, the opening end 37a is automatically connected to a connecting end 54a opened frontward, so that the exhaust gas from the exhaust pipe 36 can be guided to the exhaust pipe 54.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides an exhaust pipe connection unit that is connected to the exhaust pipe of the engine on a pallet on which a test engine is mounted.
The present invention relates to an exhaust pipe connecting device for engine testing, in which an exhaust pipe connected to the exhaust pipe connecting unit is disposed on the side of the engine testing device that receives the pallet at a predetermined position.

(Prior art and its problems) A conventional exhaust pipe connection device for engine testing of this type has a connection that can be freely moved in and out of the engine test device, as described in, for example, Japanese Patent Application Laid-open No. 56-16840. A connecting exhaust pipe is provided, and the tip opening of this connecting exhaust pipe is pressed directly against the exhaust port on the engine side for connection, and the exhaust from the engine is routed from the connecting exhaust pipe to the fixed exhaust pipe via the bellows-shaped exhaust pipe. It was designed to lead to.

In such conventional exhaust pipe connection devices, the position of the exhaust port on the engine side must be approximately constant, and furthermore, a cylinder, etc. and its control mechanism are required to move the connecting exhaust pipe in and out. This makes it particularly unsuitable for engine testing equipment for large diesel engines with large-diameter exhaust pipes that protrude upward.

(Means for Solving the Problems) In order to solve the conventional problems as described above, the present invention has the following features:
A test engine supporting pallet is provided with a horizontal exhaust pipe that can swing left and right around a vertical axis at a position above the engine mounted on the pallet and is expandable and retractable within a certain range. A vertical exhaust pipe that is extendable and retractable within a certain range is provided in a row downward from the tip, and a downward connecting opening end that can be connected to the upward connecting opening end of the engine side exhaust pipe is provided at the end of the vertical exhaust pipe. , an operating handle is provided, and a fixed exhaust pipe is connected to the base of the telescoping horizontal exhaust pipe and has a connecting opening end that opens rearward, and the pallet is in a predetermined position on the side of the engine test equipment. The present invention proposes an exhaust pipe connecting device for engine testing, which is provided with a fixed exhaust pipe having a forward connecting opening end that connects with the rearward connecting opening end of the fixed exhaust pipe when the exhaust pipe is brought into the engine.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

1 is a conveyor for loading and unloading the pallet 3 on which the test engine 2 is mounted, and includes two conveyor roller rows 5a, 5b on the left and right arranged on the conveyor frame 4, and each roller of both conveyor roller rows 5a, 5b. 6, a motor 7 that rotates the pallet 6 in any forward or reverse direction, a pair of left and right pallet side guide rails 8a, 8b, and a pallet positioning stopper 9. The pallet 3 has positioning holes 10a and 10b provided at two locations in the front and rear on the center line in the front-rear direction, a unit 11 for connecting piping, etc. installed on the front end of the pallet, and holes on the left and right sides on the front end of the pallet. It includes a throttle operating unit l3 disposed via a pair of struts l2, and two exhaust pipe connecting holes l5 disposed above the pallet via a portal strut 14 attached to the struts l2. There is.

Reference numeral 16 denotes a pallet positioning means attached to the conveyor frame 4, which includes a pair of front and rear lifting pins 1 that can be fitted into and removed from the positioning holes 10a and lOb of the pallet 3.
7a, 17b, and cylinder units 18a, 18b that individually drive the lifting pins 17a, 17b up and down.

The conveyor 1 equipped with the pallet positioning means l6 includes:
The conveyor 1 is disposed on a support frame 2l supported on the floor surface ■9 via a vibration isolator 20 such as a rubber block.
The roller drive motor 7 is mounted on this support frame 21.
is placed on top. 22 is a means for connecting piping, etc., which can be freely connected to and detached from the unit l1 for connecting piping, etc.; 23;
Reference numeral 25 refers to a transmission means including a transmission shaft 24 that can be fitted to and removed from the rotating shaft 2a of the engine 2 on the pallet 3, 25 refers to a throttle operation means for driving the throttle operation unit l3, and 26 refers to the exhaust pipe connection unit. Exhaust pipe connecting means that can be freely connected to and disconnected from l5, each of these means 22, 23, 25. 26 are respectively attached to columns 27 erected on the support frame 21 adjacent to the front end of the conveyor l.

The transmission shaft 24 of the transmission means 23 is supported by a movable base 29 that is driven in the front and back direction by a cylinder unit 28, and is connected to a telescopic transmission shaft 32a on a dynamometer 31 installed on the floor 19 via a support base 30. and a pair of universal joints 32b, 3
2c and are interlocked via a universal transmission joint means 32.

Next, the detailed structure of the exhaust pipe connection unit l5 will be explained based on FIGS. 4 and 5. An L having a connection opening end 37a opening rearward at one side of the upper end of the portal support 14. A bottomed vertical pipe 38 with a fixed-shape exhaust pipe 37 connected from the upper end is fixed, and a sideways pipe that is fitted onto the bottomed vertical pipe 38 and rotatable around the vertical axis 38a of the bottomed vertical pipe 38 is fixed. A joint pipe 39 is provided. The horizontal joint pipe 39 and the bottomed vertical pipe 38 communicate with each other through an opening 40 provided in the peripheral wall of the bottomed vertical pipe 38, and the fitting portion of the two is configured to be airtight against the outside world. There is.

A horizontal exhaust pipe 41 that is expandable and retractable within a certain range is connected to the horizontal joint pipe 39. This horizontal exhaust pipe 41 consists of an outer pipe 42 fixedly connected to the horizontal joint pipe 39, and an inner pipe 43 fitted into the outer pipe 42 so as to be able to be taken in and out. , a vertical exhaust pipe 44 that can be expanded and contracted within a certain range is connected. This vertical exhaust pipe 44 is connected to the outer pipe 4 which is fixedly connected to the inner pipe 43.
5, and an elevator pipe 46 fitted into the outer pipe 45 so as to be freely put in and taken out, and a downward connection opening end 46a connectable to the upward connection opening end 36a of the engine side exhaust pipe 36 at the lower end of the elevator pipe 46. , and an operating handle 47 that projects radially from the circumferential surface. 48 is a chain for preventing the elevator tube 46 from falling, and 49 is a locking means for locking the elevator tube 46 at the upper limit position. This locking means 4
Reference numeral 9 denotes a pair of left and right guide rods 50 supported by the outer pipe 42 of the horizontal exhaust pipe 4l, and a pair of left and right hanging rods 5l loosely fitted to the guide rods 50 so as to be slidable and swingable. , a hanging hook 52 attached to the lower end of the hanging rod 51, and a pair of left and right locking pins 53 protruding from the elevator pipe 46 of the vertical exhaust pipe 44. As shown in FIGS. 3 and 4, stoppers 57a and 57b are protruding from the upper end of the portal support 14 to restrict the horizontal swing range of the horizontal exhaust pipe 41 (lateral joint pipe 39). has been done.

Further, as shown in FIGS. 1 and 4, the exhaust pipe connecting means 26 on the engine test equipment side connects the rearward connection opening end of the fixed exhaust pipe 37 when the pallet 3 is carried in and fixed at a predetermined position. A forward connecting opening end 54 that connects with 37a
A fixed exhaust pipe 54 is provided. The forward connecting opening end 54a is formed at the distal end of a movable pipe 56 that is externally fitted onto the small diameter pipe portion 54b of the fixed exhaust pipe 54 so as to be movable in the front and back direction within a certain range, and is biased forward by a spring 55. There is.

The engine test device configured as described above is used as follows. That is, the pallet 3 on which the engine 2 is mounted in a predetermined position is sent onto the conveyor l of the engine test equipment by the transfer conveyor 33 as shown by the imaginary line in FIG. As shown, each conveyor roller 6 of the conveyor roller row 5a5b rotationally driven by a motor 7 moves the pallet 3 along a pair of left and right pallet side guide rails 8a, 8b.
Feed it to the position where it abuts the stopper 9 in between. Next, a pair of front and rear lifting pins 17a of the pallet positioning means l6,
17b is raised by the cylinder units l8a and 18b to open the pair of positioning holes 10 in the front and rear of the pallet 3.
a and 10b from below, and move pallet 3 onto conveyor 1.
Fix it in place above.

On the other hand, the supply/discharge pipes for fuel, cooling water, etc. and the electrical system terminals of the engine 2 on the pallet 3 are connected to the corresponding parts of the piping etc. connection unit 11 on the pallet 3 side, and the throttle of the engine 2 is A rod 35 that allows the lever 34 and the throttle operation unit 13 on the pallet 3 side to be detachably attached.
Further, the exhaust pipe 36 of the engine 2 and the vertical exhaust pipe 44 in the exhaust pipe connecting unit 15 on the pallet 3 side are connected.

That is, the vertical exhaust pipe 44 is opened by pulling out the inner pipe 43 of the horizontal exhaust pipe 41 from the outer pipe 42 and rotating the horizontal exhaust pipe 41 around the vertical axis 38a of the bottomed vertical pipe 38. It is located directly above the exhaust pipe 36 of the engine 2. At this time, the amount of expansion and contraction of the horizontal exhaust pipe 4l and the range of horizontal rotation are determined so that the exhaust pipe 36 can cover either the left or right side of the engine 2. Next, lift the elevator pipe 46 of the vertical exhaust pipe 44 using the handle 47, remove the hanging hook 52 of the locking means 49 from the locked pin 53, and then lower the elevator pipe 46 of the vertical exhaust pipe 44. Then, the downward connection opening end 46a of the lower end thereof is fitted and connected to the upward connection opening end 36a of the exhaust pipe 36 on the engine 2 side.

The above connection between the engine 2 side and the pallet 3 side is performed when the engine-mounted pallet 3 is carried to a predetermined position on the conveyor l in the engine test equipment, or at an appropriate time before being carried into the engine test equipment. It can be done.

When the engine-mounted pallet 3 is carried to a predetermined position on the conveyor 1 as described above, the fixed exhaust pipe 54 of the exhaust pipe connecting means 26 on the engine test equipment side is directed forward as shown by the solid line in FIG. The connection opening end 54a is connected to the spring 5 by the backward connection opening end 37a of the fixed exhaust pipe 37 in the exhaust pipe connection unit 15 on the pallet 3 side.
Both connection opening ends 5 are pushed back by a certain amount against 5.
4a and 37a are fitted and connected to each other.

In this state, the piping etc. connection means 22 is moved forward by the cylinder unit 22a to connect it with the piping etc. connection unit 11 on the pallet 3 side, and the transmission shaft 24 of the transmission means 23 is moved forward by the cylinder unit 28. The rotating shaft 2a of the engine 2 is fitted with a spline, and the engine 2 is operated with ignition. At this time, by operating the throttle lever 34 of the engine 2 by the throttle operating means 25 on the engine testing device side via the throttle operating unit 13 and rod 35 on the pallet 3 side, the rotational speed of the engine 2 to be ignited is controlled. The rotational force of the engine 2 can be adjusted by the universal transmission joint means 3.
A dynamometer 31 received via 2 can perform the necessary measurements. And the exhaust from engine 2 is the exhaust pipe 3
6 to the vertical exhaust pipe 44, horizontal exhaust pipe 4l, and horizontal joint pipe 39 in the exhaust pipe connection unit 15 on the pallet 3 side.
, the bottomed vertical pipe 38, and the fixed exhaust pipe 37, and further via the fixed exhaust pipe 54 in the exhaust pipe connecting means 26 on the engine test equipment side.

When the engine test is completed, the piping etc. connection means 22 is moved backward and detached from the piping etc. connection unit 11 on the pallet 3 side, and the transmission shaft 22 of the transmission means 23 is
are moved backward and separated from the rotating shaft 2a of the engine 2, and further the lifting pins 17a. of the pallet positioning means 16 are moved backward. 1
7b is lowered to open the positioning hole 10a on the pallet 3 side,
After the pallet 3 is separated from the pallet 10b, each port roller 6 of the carrying-in/carrying-out conveyor 1 is driven to rotate in reverse by the motor 7, and the pallet 3 is sent to the transfer conveyor 33 side. At this time, the rearward connection opening end 37a of the exhaust pipe connection unit 15 on the pallet side and the forward connection opening end 54a of the exhaust pipe connection means 26 on the engine test equipment side are automatically separated, and the forward connection opening end 37a of the exhaust pipe connection unit 15 on the pallet side is automatically separated. The connection opening end 54a is returned to the original forward limit position by the spring 55. When removing the engine 2 from the pallet 3, it is necessary to separate the exhaust pipe 36 and the exhaust pipe connection unit [5] on the pallet 3 side. In this case, lift the elevator pipe 46 of the vertical exhaust pipe 44 to the upper limit position. , the hanging hook 52 of the locking means 49 is locked to the locked pin 53 of the elevator pipe 46, and the entire length of the horizontal exhaust pipe 41 is reduced to the reduction limit.

In addition, the connection structure between the piping etc. connection means 22 on the engine test equipment side and the piping etc. connection unit 11 on the pallet 3 side, the throttle operation means 25 on the engine test equipment side and the throttle operation unit l3 on the pallet 3 side, etc. Since various types of linkage structures and the like are conventionally well known, a detailed explanation thereof will be omitted.

(Operations and Effects of the Invention) As described above, according to the exhaust pipe connection device for engine testing of the present invention, as long as the test engine mounted on the pallet is equipped with an exhaust pipe having an upward connection opening end. Even if the position or height of the upward connecting opening end of the exhaust pipe is not constant, the horizontal exhaust pipe can be freely rotated and expanded around the vertical axis, and the horizontal exhaust pipe can be connected continuously from the tip of the horizontal exhaust pipe. The upward and downward movement of the downward connecting open end of the telescopic vertical exhaust pipe ensures that the downward connecting open end of the vertical exhaust pipe is securely connected to the upward connecting open end of the exhaust pipe on the engine side. Exhaust air from the pipe can be led via the vertical exhaust pipe and the horizontal exhaust pipe to a fixed exhaust pipe having a rearwardly facing connecting open end. Then, the pallet is simply transported to a predetermined position in the engine test equipment.
The rear connecting open end of the fixed exhaust pipe is automatically connected to the forward connecting open end of the fixed exhaust pipe on the engine test equipment side, and the exhaust from the engine side exhaust pipe is connected to the fixed exhaust pipe on the engine test equipment side. It can be led to the exhaust pipe.

Therefore, as an exhaust pipe connection device that can be applied to various engines equipped with an exhaust pipe having an upward connection opening end,
It is extremely convenient to use, and can be easily installed even with large-diameter exhaust pipes by utilizing the space above the engine. Since it can be implemented without the use of an actuator, the exhaust pipe connection device can be applied to large engines and can be implemented at a relatively low cost.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view, Fig. 2 is a plan view of the engine test equipment side, Fig. 3 is a longitudinal sectional front view of Fig. 1, Fig. 4 is a side view explaining the exhaust pipe connection device, Figure 5 is a cross-sectional plan view of the main part. 1...Conveyor for carrying in/out, 2...Test engine, 3...Pallet, 7...Conveyor drive motor 10a, 10b...Positioning hole, 11...Unit for connecting piping etc. , l3... Throttle operation unit 15... Exhaust pipe connection unit, l6... Pallet positioning means, 17a, 17b... Lifting pin, 2o.
... Vibration isolator, 21... Support frame, 22... Connection means for piping etc., 23... Transmission means, 24... Transmission shaft, 25... Throttle operating means, 26... Exhaust Pipe connection means, 31... Dynamometer, 32... Universal transmission joint means, 36... Engine side exhaust pipe, 36a... Upward connection opening end, 37... Pallet side fixed exhaust pipe, 37a
... Rearward connection opening end, 4l... Telescopic horizontal exhaust pipe, 44... Telescopic vertical exhaust pipe, 46...
Lifting pipe, 46a... Downward connection opening end, 47... Handle, 48... Fall prevention chain, 49... Lifting pipe locking means, 54... Fixed exhaust pipe on engine test equipment side, 54a ...Front facing connection opening end.

Claims (1)

[Claims] A test engine supporting pallet is provided with a horizontal exhaust pipe that can swing left and right around a vertical axis at a position above the engine mounted on the pallet and is expandable and retractable within a certain range. A vertical exhaust pipe that is extendable and retractable within a certain range is provided in a row downward from the tip, and a downward connecting opening end that can be connected to the upward connecting opening end of the engine side exhaust pipe is provided at the end of the vertical exhaust pipe. , an operating handle is provided, and a fixed exhaust pipe is connected to the base of the telescoping horizontal exhaust pipe and has a connecting opening end that opens rearward, and the pallet is in a predetermined position on the side of the engine test equipment. An exhaust pipe connecting device for engine testing, comprising: a fixed exhaust pipe having a forward connecting opening end that connects with the rearward connecting opening end of the fixed exhaust pipe when the fixed exhaust pipe is carried into the engine.