SU805098A1 - Test-bed for kinematic chains - Google Patents

Description

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The invention relates to mechanical engineering, in particular to testing equipment, and can be used to test kinematic chains in determining the effect of elastic deformations and backlashes of mechanical transmissions of actuators. dynamic properties of the following systems.

A stand for testing kinematic circuits is known, containing short-circuited multistage gearboxes X1 each of which has a leading, intermediate and driven shaft, a drive connected to the drive shaft of one of the gearboxes, connecting shafts, one pair of which is intended for connecting the subjects of kinematic chains with non-coaxial shafts driven shafts of gearboxes, torsion shaft loader and zshshykan elements 11.

A disadvantage of the known test bench is that it provides tests only according to the closed loop scheme and does not allow to carry out tests according to the open circuit with parallel and sequential connection of the tested kinematic chains. .

The purpose of the invention is to extract the number of possible loading modes.

This goal is achieved by the fact that the loader is made in the form of a braking device attached to the drive shaft of another gearbox, the wedging elements connect another pair of connecting shafts intended for coupling the free drive shafts of the gearboxes to the tested kinematic chains, and the torsion shaft - with intermediate shafts gears.

In addition, the closure elements

made in the form of controlled couplings,

The drawing shows a basic kinematic scheme of the stand.

The stand contains two closing multistage gearboxes 1 and 2,

0 test devices 3 and 4, each of which is a simulator of the rigidity of kinematic chains 5 and a backlash simulator b attached to it, made in B1

5 couplings with tangential clearance f. Gearboxes, transmissions, couplings, shafts, etc. can be used as test devices. - To the input of the gearbox 1 is connected to the actuator 7, made.

0

for example, in the form of an electric motor. A brake device 8, made in the form of an electric motor 9 and weight-controlled flywheel 10, is connected to the input of the gearbox 2. On the driven shaft and the gearbox there are coupling halves 12 and 13 of the controlled coupling 4. The coupling half 12 is mounted on the shaft 11 with the possibility of axial displacement. The coupling half 12 is rigidly connected to the gear 15, which is kinematically connected to the gear 16, which is rigidly fixed on the intermediate gearbox 17 of the gearbox 1. gear 21 is rigidly fixed, kinematically connected with gear 22, rigidly fixed on the coupling half 23, controlled by the coupling sleeve 24. Half light 23 is rotatably mounted on the intermediate shaft 25 of the gearbox 2. On the shaft 25 with the possibility of axial gearing The seat is mounted on the half coupling 26 of the coupling 24. The mezert 22 is kinematically connected with the gear 27, which is rigidly connected to the coupling half 28, controlled by the coupling muLA 29. The half coupling 28 is installed jjeHa rotatably on the driven shaft 30 of the gearbox 2. On the shaft 30 with the possibility of axial displacement the half coupling The 31 shafts 29. The driven shafts 11 and 20 with the tested device 3 connected between them form the first main kinematic chain connecting the closing gear 1 and 2, the driven shafts 19 and 3d with the tested device 4 connected between them. - the second. The torsion shaft 33 is connected to the intermediate shaft 17 of the gearbox 1 by means of the coupling 32, the other end of which is rigidly connected to the half coupling 34, controlled by the connecting coupling 35. The coupling half .34 is rotatably mounted on the intermediate shaft 25 of the gearbox 2. On the shaft 25 with the possibility of axial movement, a half coupling of 36 cu 35 s is installed. Intermediate shafts 17 and 25 with a torsion shaft connected between them 33 form an additional kinematic chain connecting the gearbox 1 and 2.,

When couplings 14, 24, 29 and 35 are closed, the main kinematic chains together with the additional one form a closed loop. The torsion bar 33 when tested in an open circuit can be replaced with a hard shaft. The gear ratio of the kinematic chains formed by gears 15, 16, 18 and 21, 22, 27 is 1.

The stand works as follows.

The tests are conducted in four modes.

Mode 1. The test is conducted in the open circuit of one device 3. In the initial position, the clutch 24 is closed, and the mutes 14, 29 and 35 are open. The rotation from the actuator 7 is transmitted through the gearbox 1 to the driven shaft 11, which rotates the device under test 3. The driven shaft 20 of the gearbox 2 rotates the gear 21, which transfers the rotation of the gear 22 and the coupling 24 connected to it. Next, the rotation is transmitted to the intermediate shaft 25, which is connected to the brake device 8 through the reducer 2. The test device 3 is loaded through a kinematic chain: intermediate shaft 25 - coupling 24 - gear 22 - gear 21 21 driven shaft 20.

Mode 2. The test is conducted in an open circuit of two successively connected test devices 3 and 4. In the initial position, the couplings 29 and 35 are closed, and the couplings 14 and 24 are open. The rotation from the actuator 7 is transmitted through the gearbox 1 to the driven shaft 11, which rotates the device under test 3. The driven shaft 20 rotates the gear 21, which through the gear 22 transmits the rotation of the gear 27 and the coupling 29 connected to it 29. Then the rotation is transmitted to the driven shaft 30, which rotates the tested device 4. The driven shaft 19 through the gear 18 transmits the rotation to the gear 16 and the intercepting shaft 17, which is fixed by the rigid shaft 33 and the coupling 35 connected to it. Next, the rotation is transmitted to the intermediate shaft 25 connected to the braking device 8 through reducer 2 Loading the tested devices 3 and 4 is carried out through a kinematic chain: intermediate shaft 25 - coupling 35 - rigid shaft 33 - shaft 17 - gear 16 - gear 18 - shaft 19 -. the tested device 4 - the driven shaft 30 - the coupling 29 - the gear 27 - the gear 23 - the gear 21 - the driven shaft 20 - the tested device 3.

Mode 3. The test is conducted in an open circuit with two devices connected in parallel with the test apparatus 3 and 4. In the initial position, the couplings 14, 24 and 29 are closed, and the coupling 35 is open. The rotation from the actuator 7 is transmitted through the gearbox 1 to the driven shaft 11 and further divided into two parallel streams.

The first thread. The driven shaft 11 rotates the test device 3, connected to the driven shaft 20, which rotates the gear 21, transmitting. rotation of gear 22 and coupler 24 connected to it. Further rotation is It is designed for intermediate shaft 25.

Second stream. The driven shaft 11 rotates the clutch 14 and the gear 15 connected to it 15. The gear 15 transmits the gear 16 through the gear 16 and the driven shaft 19 connected to it, rotating the test device 4 connected to the shaft 30. Then the rotation is transmitted to the coupling 29 and connected there is a gear 27, which rotates the gear 22 through the clutch 24, transmitting the rotation to the intermediate shaft 25 connected to the loading device 8 through the gearbox 2. Thus, the loading of the tested devices 3 and 4 is carried out in two streams.

First stream: intermediate shaft 25 - coupling 24 - Olester 22 - gear 21 - driven shaft 20 - device under test 3.

Second stream: intermediate shaft 25 - coupling 24 - gear 27 - coupling 29 - driven shaft 30 - test device 4.

Mode 4. The test is carried out according to the closed loop scheme by testing Nbjx devices 3 and 4. In the initial position of the coupling 14, 24, 29 and 35 are closed. The brake device 8 is disconnected. The rotation from the actuator 7 is transmitted through the reducer 1 to the driven shaft 11, which rotates the device under test 3. The driven shaft 20 rotates the gear 21, which through the gear 22 transfers the rotation of the gear 27 and the coupling 29. Next, the movement is transmitted to the driven the shaft 30 rotating the device under test 4. The slave shaft 19 transmits the rotation of gear 16 through gear 18. From the output shaft 11, rotation is also transmitted to muLte 14 and gear 15 connected to it through gear 16. The intermediate shaft 17 transmits through rotational shaft 33 and muAtu 35 rotation of the intermediate shaft 25 and muAte 24 with gear 22 fixed on it. B. As a result, a closed circuit is formed, into which the input devices 3, 4 and torsion shaft 33 enter. The loading of the test devices is carried out by pre-twisting the shaft 33 (torsion) necessary msgment

Such a stand construction ensures the use of an IS. Testing of kinematic chains, both in an open circuit with their parallel and sequential switching on and in a closed loop scheme, thereby expanding the number of possible load modes of the tested kinematic chains.

Lormula invention

five

1.Stand for testing kinematic chains, containing closed-loop multi-stage gearboxes, each with leading, intermediate and driven shafts, drive coupled

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with a bucket shaft of one of the gearboxes, connecting shafts, one pair of which is intended for connecting the tested kinematic chains with non-axial driven shafts of gearboxes, torsion shaft, load and closing element 5, characterized in that in order to expand the number of possible load modes, the loader is made in the form of a braking device attached to

0 to the drive shaft of the other gearbox, the closure elements couple another pair of connecting shafts intended for coupling the free driven shafts of the gearboxes to the ejected cinematical chains, and the torsion shaft to the intermediate shafts of the gearboxes.

2. Stand POP.1, characterized in that the closure elements are made in the form of directors e s of connecting muATs.

Sources of inLormation taken into account during the examination

1. Copyright certificate SOR 513290, cl. G 01 M 13/02, 1972

5 (prototype).

Claims (2)

Claim 1. A test bench for kinematic chains, containing locking multi-stage gearboxes, each of which has a drive, intermediate and driven shafts, a drive connected to the drive shaft of one of the gearboxes, connecting shafts, one pair of which is designed to connect the tested kinematic chains with misaligned driven shafts gearboxes, a torsion shaft, a loading device and circuit elements, characterized in that, in order to expand the number of possible loading modes, the loading device is made in the form of a brake device, is connected To the drive shaft of another gearbox, the closure elements connect another pair of connecting shafts designed to connect the free driven shafts of the gearboxes with the tested kinematic chains, and the torsion shaft with the intermediate shafts of the gearboxes. 2. The stand according to claim 1, characterized in that the circuit elements are made in the form of controlled couplings.