CN214502669U

CN214502669U - Novel engine belt pulley sound measuring device

Info

Publication number: CN214502669U
Application number: CN202120954123.4U
Authority: CN
Inventors: 陈寒心
Original assignee: Hubei Polytechnic University
Current assignee: Hubei Dianxiao Trading Co ltd
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2021-10-26
Anticipated expiration: 2031-05-07

Abstract

The utility model discloses a novel engine pulley sound measuring equipment, relate to measuring instrument technical field, the sound-proof box sets up in the top of base, hang the board setting and rotate the fixed setting of wheel and just be located the sound-proof box on hanging the board in the sound-proof box, the board rotation sets up in the sound-proof box, a pair of layer board is pasted respectively in the both sides of changeing the board, the bottom of stilt slides and sets up in the spout of foundation, the top of stilt slides and sets up in the horizontal spout of changeing the board, the cardboard is rotatory to be set up on the stilt, the top surface at the foundation is pasted to the bottom surface of cardboard. The utility model has the advantages that the relative position of the tensioner between the rotating wheels can be adjusted not only transversely, but also angularly, thus greatly improving the comprehensiveness of the test; the position between the rotating wheels can be adjusted, so that noise tests with different tensities and different transmission belt positions are realized, and whether the newly designed tensioner has noise requirements or not and the optimal installation position of the tensioner are judged.

Description

Novel engine belt pulley sound measuring device

Technical Field

The utility model relates to a measuring instrument technical field, especially a novel engine belt pulley sound measuring equipment.

Background

With the development of society, people now put higher demands on the NVH performance of automobiles, in order to ensure that the noise in the automobile compartment is lower, the tensioners, gear trains and other parts used by the automobiles need to ensure lower noise during operation, and people now increasingly demand low-noise moving parts, so that the noise of the tensioner, which is the most important sounding part of the gear train noise, is a parameter which is difficult to measure but needs to be measured and controlled.

At present, the noise of the tensioner is mainly tested by mounting the tensioner on an engine and collecting the noise generated when the engine runs by using a microphone, the detection efficiency of the method is too low, the online detection of the tensioner during production is inconvenient, and the test result is often inaccurate due to the noise interference of the engine.

In addition, the patent with application number CN202021135359.7 and name of noise tester for belt tensioner of engine has limitation in adjustment mode of tensioner, which can only be adjusted up and down, and cannot realize angle adjustment; secondly, the design of the rolling shaft can obstruct the adjustment of the transmission belt and is not beneficial to the movement adjustment of the connecting plate when the rotating wheel is adjusted.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is for diversely measure tensioning ware produced noise size when the operation, improve efficiency of software testing, can reduce the interference of other noises simultaneously again, designed a novel engine pulley sound measuring equipment.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a novel engine pulley sound measuring equipment, includes the base, still includes: the sound insulation box is arranged above the base; the motor is fixedly arranged on the base and is positioned in the sound insulation box; the suspension plate is arranged in the sound insulation box; the first rotating wheel is fixedly arranged on the suspension plate and is positioned in the sound insulation box; the second rotating wheel is fixedly arranged on the suspension plate and is positioned in the sound insulation box; the first transmission belt is connected with the first rotating wheel and the motor; a second drive belt connecting the first and second rotating wheels; a tensioner disposed in contact with the second drive belt; a pressure gauge disposed at a bottom end of the tensioner; the top end of the support column is in contact with the pressure gauge, and the bottom end of the support column is provided with a thread; the rotating plate is rotatably arranged in the sound insulation box, a longitudinal sliding groove corresponding to the support column is formed in one end of the rotating plate, and a transverse sliding groove is formed in the other end of the rotating plate; the supporting plates are arranged on the supporting columns and are respectively attached to two sides of the rotating plate; the bottom column is arranged above the base and positioned in the sound insulation box, and a sliding groove is formed in the top end of the bottom column; the bottom end of the fixed column is arranged in a sliding groove of the bottom column in a sliding manner, and the top end of the fixed column is arranged in a transverse sliding groove of the rotating plate in a sliding manner; the clamping plate is rotatably arranged on the fixed column, and the bottom surface of the clamping plate is attached to the top surface of the bottom column.

Further, the sound insulation box is provided with a door.

Furthermore, hang the board and be equipped with the array screw, first rotating wheel and second rotating wheel set up in the screw of hanging the board.

Further, the display screen of the pressure gauge is arranged on the outer side of the tensioner, and the side of the sound insulation box opposite to the display screen of the pressure gauge is transparent.

Furthermore, a rubber pad is arranged on one surface of the supporting plate, which is attached to the rotating plate.

Further, still include microphone and sound force meter, the microphone sets up in the sound-proof box, the sound force meter with the microphone passes through the wire and connects, the sound force meter sets up on the base.

The utility model has the advantages that: the relative position of the tensioner between the rotating wheels can be adjusted not only transversely, but also angularly, thus greatly improving the comprehensiveness of the test; the position between the rotating wheels can be adjusted, so that noise tests with different tensities and different transmission belt positions are realized, and whether the newly designed tensioner has noise requirements or not and the optimal installation position of the tensioner are judged.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

FIG. 1 is a schematic view of the initial position structure of a sound meter;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic view of the structure of the tuning of the sound meter post;

fig. 4 is a schematic structural view of the tuning of the sounding device.

In the above figures, 1, a base; 2. a sound insulation box; 3. a motor; 4. a suspension plate; 5. a first rotating wheel; 6. a second rotating wheel; 7. a first drive belt; 8. a second belt; 9. a tensioner; 10. a pressure gauge; 11. supporting a column; 12. rotating the plate; 13. a support plate; 14. a bottom pillar; 15. fixing a column; 16. clamping a plate; 17. a microphone; 18. an acoustic force meter.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given to the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments as follows:

a novel engine belt pulley sound detector is shown in figures 1 to 4 and comprises a base 1, a sound insulation box 2, a motor 3, a suspension plate 4, a first rotating wheel 5, a second rotating wheel 6, a first transmission belt 7, a second transmission belt 8, a tensioner 9, a pressure gauge 10, a support column 11, a rotating plate 12, a pair of support plates 13, a bottom column 14, a fixed column 15 and a clamping plate 16.

As shown in fig. 1, the soundproof box 2 is disposed above the base 1, the soundproof box 2 is a square housing, the housing is composed of an inner wall, an outer wall and soundproof cotton filled between the inner wall and the outer wall, the soundproof box 2 is used for reducing the interference of external sound during testing, and preferably, the soundproof box 2 is provided with a door for convenient use. The motor 3 is fixedly arranged on the base 1 and positioned in the sound insulation box 2 and used for providing power.

A suspension plate 4 is provided inside the soundproof case 2 for fixing other components. The first rotating wheel 5 is fixedly arranged on the suspension plate 4 and positioned in the soundproof box 2, and the second rotating wheel 6 is fixedly arranged on the suspension plate 4 and positioned in the soundproof box 2. The distance between the first rotating wheel 5 and the second rotating wheel 6 on the suspension plate 4 can be varied, and preferably, the suspension plate 4 is provided with a plurality of screw holes, and the first rotating wheel 5 and the second rotating wheel 6 are arranged in the screw holes of the suspension plate 4. The distance between the first rotating wheel 5 and the second rotating wheel 6 can be adjusted by adopting a mode of mounting a plurality of groups of screw holes.

A first drive belt 7 connects the first turning wheel 5 with the motor 2 and a second drive belt 8 connects the first turning wheel 5 with the second turning wheel 6. The motor 3 drives the first rotating wheel 5 to rotate through the first transmission belt 7, and when the first rotating wheel 5 rotates, the second transmission belt 8 moves along with the first rotating wheel, so that the second rotating wheel 6 is driven to rotate.

As shown in fig. 1 and 2, the detected tensioner 9 is installed in a train composed of the first rotating wheel 5, the second rotating wheel 6 and the second transmission belt 8. A tensioner 9 is arranged in contact with the second belt 8, by means of which tensioner 9 the tightness of the second belt 8 can be adjusted. The pressure gauge 10 is arranged at the bottom end of the tensioner 9, and the top end of the support post 11 is arranged in contact with the pressure gauge 10. The noise measurement of the tensioner 9 is measured when it is tensioning the belt and running, and the tensioner 9 tensions the second drive belt 8 by adjusting the difference in the position of the post 11. When the post 11 is fixed, the second belt 8 gives the tensioner 9 a reaction force according to the relation between the force and the reaction force, which is then reflected on the pressure gauge 10. At this time, it is preferable that the display screen of the pressure gauge 10 is provided outside the tensioner 9, and the side of the soundproof case 2 opposite to the display screen of the pressure gauge 10 is transparent, so that the technician can record the value displayed by the pressure gauge 10 at the outside timing.

The rotating plate 12 is rotatably arranged in the sound insulation box 2, one end of the rotating plate 12 is provided with a longitudinal sliding groove corresponding to the support column 11, and the other end of the rotating plate 12 is provided with a transverse sliding groove; referring to fig. 1 and 3, the bottom end of the support column 11 is provided with threads, the support plate 13 is arranged on the support column 13, and the support plate 13 is respectively attached to two sides of the rotating plate 12; after the position of the supporting column 11 is fixed, the two supporting plates 13 are rotated to be clamped, and the rotating plate 12 is vertically arranged with the supporting column 11, so that the tightness of the second transmission belt 8 is adjusted. Preferably, a rubber pad is arranged on one surface of the supporting plate 13, which is attached to the rotating plate 12, so as to protect the supporting plate 13 and the rotating plate 12.

Referring to fig. 1 and 4, the bottom pillar 14 is disposed above the base 1 and inside the soundproof box 2, the top end of the bottom pillar 14 is provided with a sliding groove, the bottom end of the fixed pillar 15 is slidably disposed inside the sliding groove of the bottom pillar 14, the clamping plate 16 is rotatably disposed on the fixed pillar 15, the bottom surface of the clamping plate 16 is attached to the top surface of the bottom pillar 14, and the distance of the fixed pillar 15 outside the bottom pillar 14 can be adjusted through the clamping plate 16. The top end of the fixed column 15 is arranged in the transverse sliding groove of the rotating plate 12 in a sliding mode, when the fixed column 15 moves upwards, the rotating plate 12 rotates anticlockwise, and the fixed column 15 is located through the clamping plate 16, so that the rotating plate 12 can be located.

In addition, the application also designs a microphone 17 and a sound force meter 18, wherein the microphone 17 is arranged in the sound insulation box 2, the sound force meter 18 is connected with the microphone 17 through a lead, and the sound force meter 18 is arranged on the base 1. The microphone 17 is a microphone of a sound meter, the microphone 17 is used for collecting sound generated when the wheel train runs, and then the collected data is transmitted to the sound meter 18 outside the soundproof box 2 through a wire, and the sound meter 18 is used for displaying the noise of the tensioner 9.

During testing, the measurement is carried out in a relatively quiet environment, external noise interference is reduced as much as possible, and each measurement is carried out in the same environment as much as possible so as to facilitate transverse comparison. Under the action of motor 3, first transmission belt 7 and second transmission belt 8 rotate, second transmission belt 8 generates different rotating speeds, tensioner 9 also makes second transmission belt 8 have different tightness, the noise generated by tensioner 9 and second transmission belt 8 in motion is collected by microphone 17 of sound meter 18, and the noise generated by tensioner 9 in motion can be displayed by sound meter 18. In addition, the angle of the rotating plate 12 can be adjusted by adjusting the length of the fixed column 15 in the bottom column 14; the accurate positioning of the tensioner 9 can be realized by adjusting the support column 11, the rotating plate 12 and the supporting plate 13; in practice, the two operations described above are combined to achieve both an adjustment of the position and the angle of the tensioner 9 on the second drive belt 8.

The invention has been described above with reference to a preferred embodiment, but the scope of protection of the invention is not limited thereto, and various modifications can be made and equivalents can be substituted for elements thereof without departing from the scope of the invention, and features mentioned in the various embodiments can be combined in any way as long as there is no structural conflict, and any reference sign in the claims should not be construed as limiting the claim concerned, and the embodiments should be regarded as being exemplary and non-limiting in any way whatsoever. Therefore, all technical solutions that fall within the scope of the claims are within the scope of the present invention.

Claims

1. The utility model provides a novel engine pulley sound measuring equipment, includes base (1), its characterized in that still includes:

the sound insulation box (2), the sound insulation box (2) is arranged above the base (1);

the motor (3) is fixedly arranged on the base (1) and is positioned in the sound insulation box (2);

a suspension plate (4), the suspension plate (4) being disposed within the sound-insulating box (2);

the first rotating wheel (5), the first rotating wheel (5) is fixedly arranged on the suspension plate (4) and is positioned in the sound insulation box (2);

the second rotating wheel (6), the second rotating wheel (6) is fixedly arranged on the suspension plate (4) and is positioned in the soundproof box (2);

the first transmission belt (7), the first transmission belt (7) is connected with the first rotating wheel (5) and the motor (3);

a second belt (8), said second belt (8) connecting said first (5) and second (6) rotating wheels;

a tensioner (9), said tensioner (9) being arranged in contact with said second drive belt (8);

a pressure gauge (10), the pressure gauge (10) being disposed at a bottom end of the tensioner (9);

the top end of the support column (11) is in contact with the pressure gauge (10), and the bottom end of the support column (11) is provided with a thread;

the rotating plate (12) is rotatably arranged in the sound insulation box (2), a longitudinal sliding groove corresponding to the support column (11) is formed in one end of the rotating plate (12), and a transverse sliding groove is formed in the other end of the rotating plate (12);

the supporting plates (13) are arranged on the supporting columns (11), and the supporting plates (13) are respectively attached to two sides of the rotating plate (12);

the bottom column (14) is arranged above the base (1) and positioned in the sound insulation box (2), and a sliding groove is formed in the top end of the bottom column (14);

the bottom end of the fixed column (15) is arranged in a sliding groove of the bottom column (14) in a sliding manner, and the top end of the fixed column (15) is arranged in a transverse sliding groove of the rotating plate (12) in a sliding manner;

the clamping plate (16) is rotatably arranged on the fixed column (15), and the bottom surface of the clamping plate (16) is attached to the top surface of the bottom column (14).

2. The new engine pulley sounder according to claim 1, wherein the sound-proof housing (2) is provided with a door opening.

3. The new engine pulley tone gauge according to claim 1, characterized in that said suspension plate (4) is provided with several sets of threaded holes, said first (5) and second (6) rotating wheels being provided in the threaded holes of the suspension plate (4).

4. A new engine pulley tone gauge according to claim 1, characterized in that the display screen of said pressure gauge (10) is arranged outside the tensioner (9), the side of the sound-insulating case (2) opposite to the display screen of the pressure gauge (10) being transparent.

5. The novel engine pulley sound measuring device as claimed in claim 1, wherein a rubber pad is arranged on the surface of the supporting plate (13) attached to the rotating plate (12).

6. The novel engine pulley sound measuring device as claimed in claim 1, further comprising a microphone (17) and a sound meter (18), wherein the microphone (17) is arranged in the sound insulation box (2), the sound meter (18) is connected with the microphone (17) through a conducting wire, and the sound meter (18) is arranged on the base (1).