RU2138793C1 - Gear to anchor vibration converter - Google Patents

Abstract

FIELD: vibration diagnostics of machines. SUBSTANCE: invention can be used in vibration diagnostic systems for long-term monitoring of technical state of machines. Bearing base of gear to anchor vibration converter is manufactured in the form of bracket with longitudinal and lateral flanges. Longitudinal flange is fitted with at least one bearing hole put on stepped screw-in member of unit to be diagnosed and with thrust parallel planes made perpendicular to axis of bearing hole. Lateral flange of bracket is provided with bearing plane to accommodate vibration converter and holes for its attachment. Spacing bushing is placed on stepped screw-in member between frame of machine and thrust plane of longitudinal flange of bracket facing it. EFFECT: provision for anchoring vibration converter for long-term monitoring of technical state of machines with keeping integrity of their frames, convenient mounting of gear. 4 cl, 6 dwg

Description

 The invention relates to the field of vibration diagnostics of machines and machinery, and in particular to devices for mounting a vibration transducer, and can be used in vibration diagnostics systems for long-term monitoring of the technical condition of machines.

 A device for attaching a vibration transducer is known (see, for example, the publication of the Bruhl & Kjерr company - "Measurement and analysis of mechanical vibrations", section "Mounting of accelerometers" p. 15, figure below and figures on page 14. Denmark 2850, year of publication not indicated, is given in the appendix along with the drawings), containing the diagnosed assembly installed in the machine body with its fastening elements and a vibration transducer fixed with glue or beeswax to the machine body.

 The disadvantage of this device is that such a mount is permissible only for short-term use, and also that for its dismantling it is necessary to apply shock actions that can damage the vibration transducer.

 A device for attaching a vibration transducer is known (see, for example, the publication of the Bruhl & Kjерr company - "Measurement and analysis of mechanical vibrations", section "Mounting of accelerometers" p. 15, figure above and drawings on page 14. Denmark 2850, year of publication not indicated, is given in the appendix along with the drawings), containing the diagnosed assembly installed in the machine body with its fastening elements and a vibration transducer, fixed by means of a step-shaped stud, which is used as the bearing base and screwed into the threaded hole , additionally performed in the body of the machine.

 The disadvantage of this device is that for such a fastening, it is necessary to drill the machine body and make a thread in the hole, and this, on the one hand, violates the integrity of the machine body (which in itself is unacceptable in a number of cases), but on the other hand a very time-consuming process of equipping a machine with a vibration transducer, especially when it is not possible to dismantle the machine and have to modify the machine body in place. In addition, from vibration, the vibration transducer can rotate on the stud thread, causing noise from the connecting cable, which reduces the quality of diagnostics.

 The aim of the invention is to ensure ease of installation of the device and the possibility of high-quality long-term monitoring of the technical condition of the machines while maintaining the integrity of the body of the diagnosed machine.

 The goal in a device for attaching a vibration transducer containing a diagnosable assembly installed in the machine body with fasteners including screw threaded elements and a bearing base for the vibration transducer is achieved by the fact that the bearing base is made in the form of an arm with longitudinal and transverse shelves, the longitudinal shelf of which is equipped with at least one through support hole, dressed on a stepped screw threaded element for fixing the diagnosed node, and persistent parallel planes holes made perpendicular to the axis of the support hole, and the transverse shelf of the bracket is provided with a support plane under the vibration transducer and holes for its fastening, while a spacer sleeve is installed on the stepped screw screw fastening element of the diagnosed assembly between the machine body and the persistent plane of the longitudinal shelf of the bracket facing it.

 Moreover, the goal in the device for attaching the vibration transducer is achieved by the fact that bevels are made along the edges of the ends of the longitudinal shelf of the bracket.

 In addition, the goal in the device for mounting the vibration transducer is achieved by the fact that the holes of the transverse shelf for mounting the vibration transducer are symmetrically spaced with the same pitch from each other.

 Moreover, the goal in the device for attaching the vibration transducer is achieved by the fact that the longitudinal shelf of the bracket is made curly in plan with one or more protrusions, and the through support hole is made in each protrusion, while the thrust planes of the longitudinal shelf of the bracket are made around the entire perimeter of the support hole.

 And also the goal in the device for attaching the vibration transducer is achieved by the fact that the longitudinal and transverse shelves of the bracket are made in cross section with the formation of a T-shaped or L-shaped profile.

Analysis of the distinguishing features of the proposed device for mounting the vibration transducer and the technical results provided by them showed that:
- the implementation of the bearing base in the form of a bracket provided the device the opportunity to avoid the full dependence of the mount on the particularities of the shape of the case of specific machines, and the ability to set the required position of the vibration transducer;
- a through support hole in the longitudinal shelf of the bracket, dressed on a stepped screw screw fitting of the diagnosed assembly, secured the vibration transducer without compromising the integrity and strength of the machine itself;
- thrust planes of the longitudinal flange provide simplicity of design and reliability of fixing the bracket;
- end bevels of the longitudinal shelf of the bracket provide an extension of the scope of application of devices on machines with housings of different contours;
- the reference plane and the holes in the transverse shelf of the bracket simplify installation work to install the vibration transducer in a predetermined position;
- the step between the holes in the transverse shelf of the bracket provides the ability to adjust the position of the vibration transducer for the oriented position of the connecting cable;
- the curved shape of the longitudinal shelf of the bracket provides the device with an extension of the scope of its use, given the variety of differences in the configuration and dimensions of the machine casings and the ranges of the measured vibration;
- the implementation in the longitudinal shelf of thrust planes around the entire perimeter of the support hole provides the device, along with the simplicity of its fixation design, simplification of manufacturing technology, since it does not require increased cleanliness and accuracy relative to the surface of the rest of the longitudinal shelf;
- T-shaped and L-shaped cross-section of the bracket provides the device with a simple design of mounting it on the machine body.

The invention is illustrated by drawings, which depict on:
FIG. 1 - a machine body with a diagnosed node in the context and a T-shaped bracket with a vibration transducer;
FIG. 2 - T-shaped bracket with a longitudinal section along the reference hole and the hole for the bolts of the vibration transducer;
FIG. 3 is a side view of a T-shaped bracket with one protrusion and a reference hole;
FIG. 4 is a top view of the transverse shelf of the T-shaped bracket with a supporting plane and holes for the bolts of the vibration transducer;
FIG. 5. - side view of the T-shaped bracket with several protrusions and support holes;
FIG. 6. - side view of the L-shaped version of the bracket;
A device for mounting a vibration transducer 1 on a machine body 2 (see Fig. 1) contains:
Diagnostic unit 3 installed in the body of the housing 2 (in this case, the bearing), fixed by means of a mounting cover 4 and a step screw screw fastening element 5 (bolt or stud). Spacer sleeve 6 is installed on one of the elements 5.

 The bearing base 7, which is made in the form of a bracket (see Fig. 2, 3, 5, 6) with a longitudinal shelf 8 and a transverse shelf 9.

 The longitudinal 8 and transverse 9 shelves of the bracket 7 are made in cross section to ensure the formation of a T-shaped or L-shaped profile (see Fig. 2.6).

 The longitudinal flange 8 is provided with a through support hole 10 (see FIGS. 2, 3, 5, 6), by means of which the bracket 7 is mounted on the element 5 and parallel thrust planes 11, which are made perpendicular to the axis of the support hole 10. At the ends of the longitudinal shelf 9 are made bevels 12 to ensure the divergence of the bracket 7 with the body 2 of the machine.

 The bracket 7 is supported by the support hole 10 on the element 5, while one plane 11 is abutted against the end of the spacer sleeve 6, and the other plane 11 is on the outer step of the element 5 (bolt head).

 The transverse shelf 9 of the bracket 7 is provided with a supporting plane 13 for the vibration transducer 1 (see Fig. 2 ... 6) to expose the axis of the vibration transducer 1 to the required position, as well as holes 14 (see Fig. 2, 4) for the bolts 15 (cm Fig. 1) for fastening the vibration transducer 1.

 The holes 14 (see Fig. 4) are symmetrically spaced from each other with the same pitch to ensure that the connecting cable (not shown conditionally) is laid in the mounting position to prevent vibration noise created by it.

 A washer 16 with elastic properties is installed between the outer step of the element 5 (bolt head) and the plane 11 of the shelf 8 of the bracket 7.

 The longitudinal shelf 8 (see Figs. 3 and 5) is made curly (see Fig. 3) with one protrusion and a support hole 10 and, as an option (see Fig. 5), with two protrusions and a support hole 10 in each protrusion . In this case, the thrust planes 11 in both versions are made along the entire perimeter of the hole 10.

The device operates as follows:
Initially, the washer 16 is put on the element 5, the bracket 7 with its supporting hole 10 and the spacer sleeve 6, then the element 5 with the bracket 7 dressed on it and the sleeve 6 is screwed into the machine body 2 (see Fig. 1).

 In this case, the bracket 7, before tightening the element 5, is set so that the supporting plane 14 of its transverse shelf 9 would occupy the position necessary for the maximum sensitivity of the vibration transducer 1, and after installing the bracket 7, tighten the element 5 with the formation of the fixed position of the bracket 7 on the housing 2 cars. During installation of the device, it diverges from the machine body 2 due to the bevels 12 of the longitudinal shelf 8 of the bracket 7 and due to the T-shaped or L-shaped section profile of the bracket 7, which improves the installation conditions.

 Then, the vibration transducer 1 is installed on the plane 13, turning it around the axis by a step between the holes 14 and bringing the connecting cable to the most convenient position for its further fastening, and then the bolts 15 are screwed into the holes 14, motionlessly securing the vibration transducer 1.

 Installed as described above, the vibration transducer 1 is ready for operation, during which the diagnosed node 3 transfers the vibration it creates to the body 2 and element 5. The immobility of the connection (body 2 - element 5 - sleeve 6 - bracket 7) ensures the transmission of vibration forces to vibration transducer 1 in its pure form without distortion.

 Further, the vibration transducer 1, perceiving the forces of vibration, converts them into an electrical signal and transmits it through a connecting cable, which does not create vibration noise.

 Thus, the proposed device for mounting the vibration transducer provides the convenience of mounting the device and the possibility of high-quality long-term monitoring of the technical condition of the machines while maintaining the integrity of its body.

Claims (5)

 1. A device for mounting a vibration transducer, comprising a diagnosable assembly mounted in the machine body with fasteners including screw threaded elements, and a bearing base for the vibration transducer, characterized in that the bearing base is made in the form of an arm with longitudinal and transverse shelves, the longitudinal shelf of which is provided with at least at least one through reference hole, dressed on a stepped screw threaded element for fixing the diagnosed node, and persistent parallel planes made erpendikulyarno axis of the bearing opening and the transverse flange is provided with an arm supporting a vibrator and plane openings for its fastening, in this case on a stepped screw-fastening member diagnosed node between the machine body and faces the longitudinal plane of the thrust thereto shelf bracket mounted spacer.  2. The device according to claim 1, characterized in that the bevels are made along the edges of the ends of the longitudinal shelf of the bracket.  3. The device according to claim 1, characterized in that the holes of the transverse shelf of the bracket for attaching the vibration transducer are symmetrically spaced with the same pitch from each other.  4. The device according to claim 1, characterized in that the longitudinal shelf of the bracket is made curly in plan with one or more protrusions, and a through support hole is made in each protrusion, while the thrust planes of the longitudinal shelf of the bracket are made around the entire perimeter of the support hole.  5. The device according to claim 1, characterized in that the longitudinal and transverse shelves of the bracket are made in cross section with the formation of a T-shaped or L-shaped profile.

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