RU175297U1 - STAND FOR TESTS OF ENGINE-STEERING COLUMNS WITH INTEGRATED SYSTEM OF COMPLEX MONITORING - Google Patents

Abstract

The utility model relates to the field of shipbuilding and can be used in the manufacture and testing of propulsion-steering columns with an integrated monitoring system. When conducting dynamic tests on a DRC propeller shaft mounted in a test bench, instead of a propeller, a brake device and propeller shaft support are mounted. The sensors mounted on the parts inside the DRC record the deviation values depending on the applied loads created by the braking system during operation of the electric drive motor. When conducting static tests on the propeller shaft of the DRC mounted in the test bench, instead of the propeller, a load beam is mounted, and the stop and exact positioning of the jacks with dynamometers is carried out using support frames fixed so that the generated static loads are internal forces in the propeller system Shaft - the DRC. The sensors installed inside the DRC detect deformations depending on the loads different in magnitude and direction applied to the load beam at points that are precisely positioned relative to the shaft axis by special reference points (protrusions).

Description

The utility model relates to the field of shipbuilding and can be used in the manufacture and testing of propulsion-steering columns (DRC) with integrated integrated monitoring system.

A known bench for testing and running gears is a utility model No. 111657 dated 08/22/2011. The stand contains a drive, a bed with upper and lower platforms and shock absorbers, a clip with clamps and a loader in the form of a brake disk mounted on a shaft between the middle and lower platforms, transitional hubs connected to the cage and mounted on the shaft, brake pads mounted pivotally on the two-arm horizontal levers and interacting with the upper and lower planes of the disk, the axis of rotation of the levers mounted vertically at the ends th rod moving in the guide mounted on the middle platform of the bed, and their free ends are pivotally connected to the upper and lower vertical pushers mounted movably in the sleeve fixed on the middle platform in the central part of the sleeve, two-shouldered is installed between the pushers on the axis through the side hole the rocker with a moving load, while the upper and lower parts of the free end of the rocker arm interact respectively with the free ends of the upper and lower pushers.

Work with the stand is as follows.

The gearbox is installed and fixed on the upper platform bed between the drive and the cage, the drive is mechanically connected to the gearbox. The output shaft or gear wheel of the gearbox is fixed with clamps in the cage, the load position on the beam is adjusted.

Then include the drive, the torque from the drive through the gearbox, the cage, the adapter hub and the shaft is transmitted to the disk and drives it into rotation. Under the action of the mass of the load through the rocker arm, pusher and pad levers, their friction pads slow down the rotation of the disk and create a load on the disk, shaft, hub, ferrule, thereby providing the necessary torque on the output shaft or gear wheel of the gearbox.

Next, a torque is measured with a removable dynamometer, if necessary, the load on the brake disk shaft is adjusted by moving the load along the beam and test and gear-drive.

When the stand is operated under the action of friction, wear (decrease in height) of the friction linings of the pads occurs, and for various reasons this wear can be uneven. In this case, under the influence of reactive forces, the pads and levers move up or down on a vertical thrust in the guide, thereby compensating for the uneven wear of the friction linings of the pads.

The stand allows you to test and run in various gearboxes and motor gearboxes with high quality work by providing test and break-in conditions as close as possible to operating conditions, in the case of a standard gearbox installation with a vertical shaft arrangement and ensuring standard shock absorption, as well as the possibility of changing the load (values torque) during the operation of the stand by moving the load along the beam, i.e. changes in the length of the lever for applying force to the brake pads during special break-in programs (modes).

The stand has a drawback - the inconvenience of operation due to the need for periodic use of a removable dynamometer to measure the load (torque) with special break-in programs (modes).

A known bench for testing and running gears with a torque monitoring device, utility model patent No. 119106 dated 11/07/2011, containing a drive, a bed with upper, middle and lower platforms and shock absorbers, a clip with clamps and a loader in the form of a brake disk, mounted on the shaft between the middle and lower pads, a transitional hub connected to a cage and mounted on the shaft, brake pads mounted articulated on horizontal two-arm levers and interacting with the upper and lower planes of the disk and, while the axis of rotation of the levers are installed at the ends of a vertical link moving in a guide fixed to the middle platform of the bed, the free ends of the said levers are pivotally connected to the upper and lower vertical pushers mounted movably in the sleeve fixed on the middle platform in the central part of the sleeve , between the pushers on the axis through the side hole there is a two-shouldered rocker arm with a moving load, the upper and lower parts of the free end of the rocker arm interact respectively with their at the ends of the upper and lower pushers, it is equipped with the aforementioned torque monitoring device in the form of a torsiometer (torque sensor), for example, a strain gauge installed on the lower platform of the bed and kinematically connected via a clutch to the shaft of the brake disk of the loader, and a computer, while the trunk interfaces of the torsiometer and drives, such as RS232 or RS485, are connected to the computer’s USB interface.

The design of this utility model improves the convenience of testing and running gears (eliminating errors in manufacturing and assembly) according to a given computer program with special modes and monitoring (constant monitoring) of the torque (load) on the output shaft of the gearbox using a torque monitoring device in the form a tensiometric torsiometer kinematically connected to the shaft of the brake disk of the stand loader and connected to the computer.

The disadvantage of the stand is the impossibility of testing the DRC assembly.

For the prototype, a test bench was selected for testing the DRC, utility model patent No. 116461 dated 11/08/2011, containing a massive frame, resting through vibration mounts on side racks, fixedly mounted on the foundation, on which the stand on the jacks is located. An electric motor is mounted on the frame. The frame is removable, a support ring is placed on it, connected by a shell with a clamping flange located above it, on which fork clamps are fastened with pins, clamping the upper flange of the subframe of the DRC assembled directly at the test site, and the jacks on the foundation with the stand are lifted and aligned lower gear for connecting to the bottom of the subframe.

Stand for testing the propulsion-steering column works as follows.

The pre-assembled lower DRC gearbox is placed on a stand on the stand foundation, lifted and leveled with jacks in the vertical and / or horizontal direction. A removable frame is lowered and secured through the vibration mounts to the side racks, with the platforms mounted on it, connected by a shell with a clamping flange located above it. A subframe is lowered through the clamping flange and the support ring, the lower flange of which rests on the support ring, and the upper flange is flush with the clamping flange. The lower gearbox is connected to the lower flange of the subframe; the upper gearbox is installed on the upper flange of the subframe. Make the final assembly of the DRC, lower the jacks with the stand. Fasten the upper flange of the subframe with fork tacks with the help of studs screwed into the threaded holes of the clamping flange, after which an electric motor is connected to the input shaft of the upper gearbox. Tests are carried out according to the program and test procedure, after which the DRC and the stand are disassembled in the reverse order. The design of the stand allows to test the DRC assembly with a propeller or a screw simulator both for checking the rotation of the propeller shaft and for checking the rotation of the balloons - rotation drives with 360 ° rotation of the DRC.

The disadvantage of the stand for testing the DRC is that in case of failure of the elements of the integrated monitoring system of the DRC, it is necessary to dismantle the lower gear from the stand for its disassembly and troubleshooting.

The objective of the claimed utility model is to provide bench testing of the DRC with an integrated system of integrated monitoring, adjustment and calibration of the measuring channels of the integrated monitoring system.

The technical result is achieved as follows.

When conducting dynamic tests on the propeller shaft of the DRC mounted in the test bench, instead of the propeller, a brake device and the propeller shaft support are mounted. Sensors mounted on parts inside the DRC detect deviations depending on the applied loads created by the braking system during operation of the electric drive motor.

When conducting static tests on the propeller shaft of the DRC mounted in the test bench, instead of the propeller, a load beam is mounted, and the emphasis and exact positioning of the jacks with dynamometers are carried out using support frames fixed to the body of the DRC. Sensors mounted on parts inside the DRC record deviation values depending on the different loads and directions applied to the load beam.

A test bench for a DRC with an integrated integrated monitoring system is shown in FIG. 1 ÷ 5 and contains

a removable frame 1, resting through vibration mounts 2 on the side posts 3, fixedly mounted on the foundation 4, in the central part of which there is a stand on jacks (not shown).

On a removable frame 1 posted by a supporting flange 5, attached to the bottom box 6 of the DRC, and a special foundation 7 for installing an electric motor 8 of the drive.

For convenience and safety of the stand maintenance, on the frame 1 there are platforms 9 with fences and ladders 10 are installed near the side racks 3.

The assembly of the stand is carried out in the following sequence:

On the side posts 3 are mounted through vibration mounts 2 a removable frame 1 for installing the DRC, actuators and auxiliary mechanisms. A support flange 5 is mounted on a removable frame 1, platforms 9 with barriers and ladders 10 are installed, then a bottom box 6 of the DRC is fixed in the support flange 5.

Pre-assembled lower gear 11 of the DRC is placed on a stand (not shown) installed on the foundation 4 of the stand, the lower gear 11 is raised to the design position with jacks (not shown) and attached to the bottom box 6. The upper gear 12 and the final assembly of the DRC are mounted, dismantled jacks with a stand (not shown), after which, through the coupling 13 to the shaft of the upper gearbox 12, an electric drive motor 8 is connected to rotate the DRC shaft shaft.

To conduct dynamic tests of the integrated DRC monitoring system, a device is mounted on the bench simulating the load on the propeller shaft from the rotating propeller of the DRC, which is shown in FIG. 1, 2 and contains:

a frame 14 with a brake support 15 mounted on a removable frame 1, a support 16 of the propeller shaft 17 connected to the propeller shaft 17 with a coupling half 18 and mounted on the removable frame 1 using an arm 19 to simulate a dynamic load on the rotating propeller shaft 17, the brake force is applied to the brake disc 20 and is measured by a separate dynamometer integrated into the brake device 15.

After conducting dynamic tests, the brake device 15 with the frame 14 and the support 16 of the propeller shaft 17 with the bracket 19 are dismantled.

To conduct static tests of the integrated DRC monitoring system, a load device is mounted on the stand, which is shown in FIG. 3, 4, 5 and contains

a load beam 21, temporarily mounted on the propeller shaft 17 using a coupling half 18, to create a static load on the propeller shaft 17, and the load beam 21 is equipped with rappers (not shown) for the exact positioning of the measuring and load devices - dynamometers 22 and jacks 23, respectively;

horizontal removable frame 24 with stops 25 to create a static load along the axis of the propeller shaft 16 in two opposite horizontal directions and offset by the axis of the propeller shaft 16, and the horizontal removable frame 22 is attached to the lower gear 11 of the DRC so that the generated static load is internal by force in the "DRC-frame" system and is not transmitted to the stand structure;

lower vertical removable frame 26 with stops 25 to create a static load in the plane perpendicular to the axis of the propeller shaft 16 in the direction from the bottom up and offset by the resultant axis of the propeller shaft 16 by the working width of the load beam 21, and the lower vertical removable frame 26 is rigidly bonded with a horizontal removable frame 22 attached to the lower gear 11, and rests on the foundation 4, simultaneously performing the function of supporting the cantilever end of the horizontal frame 22 so that the generated static load is inside it is not transmitted by force in the “DRC-frame” system and is not transmitted to the stand structure;

the upper vertical removable frame 27 with stops 25 to create a static load in the plane perpendicular to the axis of the propeller shaft 16 in the direction from top to bottom and offset from the axis of the propeller shaft 16 symmetrically to the working width of the load beam 21, and the upper vertical removable frame 27 is attached to the bottom box 6 (option a) or to the lower gear 11 (option b) so that the generated static load is an internal force in the “DRC-frame” system and is not transmitted to the stand structure;

a set of loading devices - jacks 23 and dynamometers 22 for creating static loads and measuring them.

After conducting static tests, the load beam 21, removable frames 24, 26, 27 and a set of jacks 23 with dynamometers 22 are dismantled.

Claims (3)

1. A test bench for the propulsion-steering column with an integrated integrated monitoring system, comprising a removable frame resting through vibration mounts on side racks fixedly mounted on the foundation, an electric motor and platforms mounted on the removable frame, ramps next to the side racks, stand on jacks located on the foundation, characterized in that on the removable frame the support of the propeller shaft connected to the propeller shaft by a coupling half and the frame with the support of the brake device, simulated guide the load on the propeller shaft rotating a propeller propulsion and steering column during dynamic tests. 2. The stand according to claim 1, characterized by equipment for conducting static tests of the propulsion-steering column with an integrated monitoring system, namely to create a load on a fixed propeller shaft, a load beam with reference points (protrusions) is installed using a half-coupling for positioning the measuring and load devices, and the reference points of the loading devices are located on three supporting frames: (1) on a horizontal removable frame attached to the lower gear of the propulsion-steering column; (2) on the lower vertical removable frame, the upper end of which supports the cantilever part of the horizontal removable frame, and the lower end rests on the base of the stand, and (3) on the upper vertical removable frame, mounted on the bottom box of the steering column, while the mounting method of all three frames such that the generated static load is an internal force in the system “propulsion-steering column housing - frame” and is not transmitted to the stand structure. 3. The stand according to claim 2, characterized in that the upper vertical removable frame is made in the form of a tetrahedron and is mounted on the balloon of the propulsion-steering column, while the method of fastening all three frames is such that the static load created is an internal force in the lower gear system propulsion-steering column - frame ”and is not transmitted either to the stand structure or to the interface of the rotary and fixed parts of the propulsion-steering column.

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