SU576523A1 - Internal combustion engine testing station - Google Patents

Description

one

The invention relates to the field of mechanical engineering, as well as to the field of engine testing.

Stations for testing internal combustion engines are known, comprising a conveyor with a bearing assembly, on which an engine and associated load device are installed, a source and power supply system for fuel, water supply and exhaust systems 1, 2.

The disadvantage of such stations is the lack of protection of testers from the effects of vibration, noise and polluted air, insufficient efficiency in the use of production areas, the relatively high cost of equipment.

Stations are known that contain an overhead conveyor with a cargo trolley and an associated carrier assembly, on the base plate of which an engine and associated load device and gearbox, fuel supply source and power supply system, water supply and gas outlet systems 3 are installed.

These stations do not have devices that protect testers from vibration and sound.

To reduce the level of vibrations and noise, the carrier unit of the proposed station is designed as a bracket consisting of a bracket and a base, connected by a body as a set

metal plates and sections of box construction alternated with shock-absorbing gaskets and connected to each other, with an arm and a base by rigid cables, freely passing through the plates, sections and gaskets and fixed in the bracket and base with the possibility of adjustment. Kronschtein is connected to the cargo carrier through a shock absorbing unit, formed in the form of an elastic sleeve, which encloses the supporting rod, which is dipped in a bracket and connected to a thrust washer. The bracket is made in the form of a box, the internal cavity of which is filled with fuel and serves as a power source.

FIG. 1 shows a conveyor test station, a plan view; in fig. 2 - bearing unit; pas figs. 3 - a rolling tunnel in a longitudinal section (section along BB

FIG. one); in fig. 4 shows a rolling tunnel in a transverse section (section along BB, FIG. 1).

The station consists of four isolated from each other production sites:

preparatory and final works (I), engine start (II), rolling (111), made in the form of tunnel 1, and certification section (IV). The plots are combined into a single process stream by a closed conveyor 2. Conveyor 2 is equipped with movable test brake stands 3. The stands are mounted on support section 4. To protect the KOHRciicpa route from vibrodloading, the support assembly is assembled from the base 5, the housing assembled from metal 6, sections 7 boxed construction, shock-absorbing pads 8 and bracket 9. The listed elements of the case are four pinch cables 10. At the ends of the cables, adjusting units are installed, consisting of sleeve 11 with internal horse cattle and nuts 12. A bracket 9 is connected via a rod 13 to a trolley 14 of a conveyor 2. In the upper part of the bracket 9 are installed: a shock absorbing sleeve 15 and a washer 16. A nut 17 holds the rod 13 J3 of the bracket hole. Stands 3 are fitted with test engines 18, which were installed but not supplied to the conveyor 19 (panel G), hydraulic brake 20 and gearbox 21 mounted on the plate 22, which is fixed to the base of the bearing assembly 4 via shock absorbers 23. In bracket 9, the fuel tank 24 is fitted with a filler an orifice 25, in which fuel is charged to the dispenser 26. The fuel line 27 of the test engine 18 is connected to the fuel tank 24. The launch section is equipped with a starting device 28. To supply water to the test stand 3, a rasping is installed in the rolling tunnel 1 tray tray 29. A water distributor 30 is installed at the stand, which is connected to distribution tray 29 by siphon 31. Water from hydraulic distributor 30 enters the engine under test via pipeline 32, and into hydraulic brake 20 through pipeline 33. Water is removed from the engine pipe 34 with a steam trap 35. Stand 3 is also equipped with a water circulation control device 36, which is connected to the siphon 31 with pipe 37. In the floor of the tunnel 1 there is a drain channel 38 covered with a grate 39. A copier 40 is attached to the grate Oroma rolls the roller 41 of the hydraulic brake discharge device. To remove exhaust gases, stand 3 is equipped with a connecting device 42, a silencer 43 and a gas outlet 44, the free end of which is inserted into the slot of the distributing box 45 of the exhaust ventilation. In the lower part of the tunnel 1, a junction box 46 of the ventilation system is mounted. Above the section of the copier 40, corresponding to the nominal mode of operation of the test engine 18, a contact wire 47 is installed, connected by a connecting wire with the control panel 48 of certification. On the test bench 3, a current collector 49 and a block 50 with an automatic engine emergency protection device and electronic memory are mounted. Walls and ceiling topples 1 are made of sound-absorbing materials. At the entrance and exit from it, sound gateways 51 and 52 are installed. From the section Nodgotovigol) L1O-concluding works, a conveyor 53 is retracted in direction D for transportation of engines. Conveyor test station 1A works as follows. The test motor 18 enters the preparatory and final works section through the supply conveyor 19, is installed on a moving test stand by means of lift-and-transport mechanisms, connected to a braking device, power supply systems, cooling, exhaust gas and an emergency safety device 50 engine These operations are determined by the operator during the movement of the co -weighter 2. When passing the moving test bench 3 through the launch section into the fuel tank 24, the tonnage from the dispenser 26 is charged through the throat 25, and water is poured into the hydrodistributor 30. Before entering the gateway 51, the test engine 18 is started by a starting device 28. At the beginning of movement through the tunnel 1 of the movable test stand 3, the free end of the gas outlet 44 enters the slot of the exhaust duct box 45, and the free end of the siphon 31 is introduced into the distribution tray 29. Roller 41, the drainage device of the hydraulic brake 20 runs over to the copier 40. From the copier 40, through the water circulation control device 36, a pulse is supplied to take water from the distribution tray 29. Water from the distribution tray under the action of The differences in elevation of the siphon 31 enter the hydraulic distributor 30. From the hydraulic distributor, through the supply line 32, it is fed to the cooling system of the engine under test. It flows out of the cooling system through conduit 34 and, after passing the steam separator 35, is discharged into drainage channel 38. Through conduit 33 water enters the hydraulic brake 20 and is discharged from it through the drainage device into the drainage channel 38 through grate 39 and enters the test station system. Upon further movement of the rolling test stand 3 along the copier 40, the height of the water draining from the hydraulic brake 20 is measured according to the profile of the copier 40, changing the water level in the stator of the hydraulic brake 20. As a result, the load on the test motor 18 changes. Exhaust gases pass through the connecting device 42 , a silencer 43 and a gas outlet 44 through the exhaust duct 45, are vented to the atmosphere. During the entire test cycle, an automatic engine emergency protection device, located in block 50, protects the tested engine 18 from accidents. The automatic emergency protection of the engine is powered by the magneto of the engine under test 18. In emergency cases, the automatic emergency protection device stops the tested engine 18, affecting its ignition system. An electronic memory located in the same block 50 remembers the cause of the shutdown.

Above the section of the copier 40 corresponding to the nominal load of the test motor 18, the current collector 49 runs over the contact wire 47 and, via the connecting wire, connects the movable test bench 3 to the certification panel 48. Information about the parameters of the nominal mode of operation of the test engine 18 enters the certification device of the console. The attestation device evaluates them and transmits the results to the electronic memory of the movable test bench with a reverse signal. Continuing movement, stand 3 is disconnected from the contact wire 47, from the copier 40, from the distribution tray 29 and through the sound gateway 52 enters the certification area. Through the plug connector of the unit 50, the bench is connected to the certification panel 48. The attestation device reads information from the electronic memory of the movable test bench 3, receives from the operator information of the visual evaluation of the test engine 18, summarizes the material, gives the final certification result to the punched card, keeps quantitative records engine tested and transmits information to the factory control system. After certification, the test engine 18 is turned off. The movable test bench 3 is conveyed by the conveyor 2 to the preparatory and final works section, where the test motor is disconnected from the systems and devices of the movable test bench. With the help of hoisting-and-transport mechanisms, the test engine is removed from the moving test bench, suspended on a conveyor 53, through which it is transported in the direction D. The freed mobile test bench 3 is conveyed to the loading position, and the test cycle is repeated.

In order to implement a flexible maneuver during the engine testing process, the conveyor 2 is made with an overhead push. The withdrawal of a running engine from the operating zone of the separators (for example, into the soundproof tunnel 1) allows the testers to be protected from the effects of noise, vibration and exhaust gases. The protection of the structures of the conveyor 2 and the building's structural elements supporting it from vibrodischarges is solved by the design of the bearing unit 4 of the test bench 3, which is damped by shock absorbers 23, which are installed between the plate 22 and the base 5.

Further vibration damping occurs in cushioning pads 8 and stewed cable lines 10. The residual voltage of the cable, connected to the bracket 9, reduces ;; up to permissible values by the damping sleeve 15 and the washer 16.

Offered test. At the station it will allow to increase the capacity of the station and increase its economic effect.

Claims (3)

1.Station for testing internal combustion engines containing outboard a conveyor with a cargo cell and an associated carrier node, on the base plate of which an engine and associated load device and gearbox, source and fuel supply system, water supply system and gas outlet system are installed, characterized in that vibrations and shchuma, nonsupply site is made in the form of a bracket consisting of a bracket and a base, connected by a body, made in the form of a set of metal plates and sections of box-shaped construction, with shock absorbing pads and connected between fight with a bracket and a base article zhnymi ropes extending freely through plastiiy, sections and gaskets, and fixed in the bracket n osiovapii adjustably. 2. A station according to claim 1, characterized in that a coupling arm with a cargo assembly through a shock absorbing unit, elongated in the form of an elastic sleeve, which encloses the supporting rod, which is located in the bracket and is connected to a thrust washer. 3. Station on PP. 1 and 2. characterized in that the bracket is made in the form of a box, the internal cavity of which is filled with fuel and serves as a power source. Sources of information taken into account in the examination 1. Copyright certificate № 260242, cl. G OlM 15/00. 1970. 2. Japanese patent number 17921, cl. 51 joint-stock company, 20.06.70. 3. Japanese patent number 3601, cl. 51 joint-stock company, 18.04.63. e - e-5G L  Sh - & 2S / -Tl /,9 cb 52 sh . : z   / - / onpcfS / reatfe L fus.1 45J /one -/ Ry