SU941861A1 - Stand for testing longitudinal movable shaft joints - Google Patents

Description

one

The invention relates to mechanical engineering and can be used to determine friction forces in splined and similar shaft joints, depending on the magnitude of the transmitted torque.

A stand for testing shafts is known, comprising an adjustable drive, a brake, a shaft moving and axially stationary, a longitudinal-muted coupling, a device for the longitudinal movement of the movable shaft l.

A disadvantage of the known stand is the absence of devices that allow measuring the resistance to longitudinal displacement depending on the magnitude of the torque transmitted by the shafts.

The purpose of the invention is to measure the resistance to longitudinal displacement at a given torque in a longitudinal-movable shaft connection.

The goal is achieved by the fact that the test bench for longitudinal-movable shaft connection, containing adjustable drive, brake, movable and stationary axially shaft, longitudinal-movable coupling for connecting shafts, device for longitudinal movement of the movable shaft, is provided with an additional longitudinal-movable coupling with known resistance to longitudinal movement and a hanging head for measuring forces sequentially mounted on

10 to a movable shaft, wherein the hanging head is made in the form of a casing with a sub-support bearing and measuring elements connected to the casing and the casing housed in the housing.

15

The drawing shows the scheme of the proposed stand.

The stand consists of the engine 1, which is connected to the gearbox 2. The output shaft of the gearbox 2 is connected to the test drive shaft by a longitudinally-movable clutch 3. In this case, the movable end of the shaft is connected to the shaft 4 of the suspension head, connected to the shaft through radial bearings in and thrust bearings 7. The feed head 5 is connected to the pointer with an axle force meter 8 and is rigidly mounted in the housing 9, ymekamyumo longitudinal and axial movement and rotation of a certain angle under the influence of the device 1O for the first the space of the movable part of the shaft 3, the shaft 4 is connected to the movable end of the bench cardan shaft by a clutch 11 having a hinge of equal angular velocities and a movable joint e by rolling friction. The under end of the bench cardan shaft coupling 11 is connected to the brake 12. The stand operates as follows. When ON1 (engine 1 is turned, the rotation of its shaft is transmitted according to the connection scheme to all the shafts up to the shaft of the brake 1) Brake 12 allows you to set a certain torque on the test and bench cardan shafts. By means of the device 1O, the housing 9 can move along the stand axis 5, the shaft 4 and the movable parts of the shafts 3 and 11. The speed of rotation of the shafts connected by the couplings 3 and 11 is changed by means of the gearbox 2. The frictional forces that occur in the couplings 3 and 11 when the outboard head 5 is moved are summed on the shaft 4, and su The friction force of the gauge is transmitted through the thrust bearings 7 to the suspension head 5, which displaces this force along the stand axis and acts on the measuring instrument 7 axial forces 7. The friction force that occurs in the movable coupling 3 is determined by subtracting the known sip friction movable coupling 11. take pszazaniy meter 8. The friction forces in the bench cardan shaft are measured by measuring the total friction force of two stv {{double shafts), and then measuring the total friction forces of each of these shafts mounted on the stand with the third shaft. Making a system of three equations, the friction forces in each of these rolls are determined. Installing a measuring device, made in the form of a suspension head, having the ability to move in the longitudinal direction, the perceiving friction force and associated with the gauge pointer, as well as the bench shaft with known friction forces in its movable connection, makes it possible to measure friction forces in the shaft under study different modes of operation. Ph o rumula and 30 bridges Stand for testing of longitudinally movable shaft connections, containing 1 adjustable drive, brake, movable and axially stationary shaft, longitudinal movable coupling for shaft connection, device for longitudinal movement of the movable shaft, about l and so that, in order to measure the resistance to the longitudinal movement of the shafts at a given torque, it is provided with an additional longitudinal movable coupling with a known resistance to longitudinal movement and a hanging head for measuring tim effort sequentially installed on the movable shaft, wherein the hanger is formed as a holder placed in the housing with the bearing support and the measuring elements associated with the n yoke housing. Sources of information taken into account when examining 1. USSR author's certificate No. 171615, cl. G O1 M 13/02, 1964.

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Claims (1)

Claim A test bench for longitudinally movable shaft joints, comprising an adjustable drive, a brake, axially movable and axially motionless shafts, a longitudinally movable coupling for connecting the shafts, a device for longitudinally moving the movable shaft, and so on, that, in order to measure the resistance to the longitudinal movement of the shafts at a given torque, it is equipped with an additional longitudinal movable coupling with a known resistance to longitudinal movement and a suspension head for measuring forces, sequentially about mounted on a movable shaft, while the hanging head is made in the form of housings housed in the housing with a bearing support and measuring elements associated with the housing and the housing.