CN216081760U - Structural noise test equipment - Google Patents

Abstract

The utility model provides a structural noise test equipment, includes two sets of test unit that the structure is the same, every group the test unit includes unable adjustment base and mounting base, mounting base includes bottom plate, curb plate, oblique curb plate, outer end plate and roof, bottom plate detachably set up in unable adjustment base is last along the length direction of bottom plate sets up curb plate and oblique curb plate on the bottom plate, the curb plate set up perpendicularly on the bottom plate, oblique curb plate slope set up in on the bottom plate the both ends of bottom plate along the width direction of bottom plate set up perpendicularly with the curb plate and the equal vertically outer end plate of oblique curb plate, through the curb plate oblique curb plate with outer end plate supports the setting with the roof that the bottom plate paralleled. This test equipment can effectively fixed machine, avoids in the operation, and the machine takes place the displacement and beats for ground, reduces the error that structure noise test data collection brought because of the external reason to improve the reliability and the precision of structure noise data.

Description

Structural noise test equipment

Technical Field

The utility model relates to the field of mounting equipment, in particular to structural noise testing equipment.

Background

Structural noise refers to noise generated by excited vibration and vibration transmission of solid components (such as machine bases, ship structures, etc.). Structural noise is prevalent in the operation of various mechanical structures, particularly in the operation of various motor vehicles. The noise reduction has important significance for reducing the noise radiation of the whole machine, improving the mechanical performance of the whole machine and prolonging the service life of the machine. Therefore, the method is used for continuously optimizing and upgrading the machine structure design, the operation environment condition and the like through the acquisition and detection of the structure noise data, improves the machine operation stability, and makes a corresponding adjustment scheme according to the structure noise data so as to achieve the purposes of improving various mechanical properties and prolonging the service life.

Therefore, how to arrange a test apparatus capable of reducing the structural noise to improve the reliability and accuracy of the structural noise data is important.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a structural noise test device which can effectively fix a machine, avoid the displacement and the jumping of the machine relative to the ground in the operation process and reduce the error of structural noise test acquired data caused by external reasons, thereby improving the reliability and the precision of the structural noise data, being beneficial to analyzing the structural noise data, finding problems in time and responding.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a structural noise test device comprises two groups of test units with the same structure, each group of test units comprises a fixed base and a mounting base, the mounting base comprises a bottom plate, side plates, oblique side plates, an outer end plate and a top plate, the bottom plate is detachably arranged on the fixed base, the bottom plate is provided with the side plates and the oblique side plates along the length direction of the bottom plate, the side plates are vertically arranged on the bottom plate, the oblique side plates are obliquely arranged on the bottom plate, the outer end plates vertical to the side plates and the oblique side plates are vertically arranged at two ends of the bottom plate along the width direction of the bottom plate, the top plate parallel to the bottom plate is supported and arranged by the side plates, the oblique side plates and the outer end plates, the two groups of test units are symmetrically arranged by taking a straight line which is vertical to the vertical distance between the two groups of side plates and passes through the midpoint of the vertical distance as a symmetry axis, the side where the side plates are arranged is used as the opposite side of the two groups of test units, the side plates are used as main bearing sides, and the supporting force can be improved in a vertical arrangement mode of the side plates compared with an inclined arrangement mode of the side plates;

correspondingly, at least one mounting groove penetrating through two ends of the fixed base along the length direction of the fixed base is arranged on the fixed base, a row of holes are arranged on the bottom plate, the number of rows of the row of holes corresponds to the number of the mounting grooves, the row of holes comprises a plurality of mounting holes which are arranged at intervals, the arrangement direction of the mounting holes is consistent with the extension direction of the corresponding mounting grooves, the orthographic projection of each mounting hole on the fixed base is overlapped with the mounting groove part, a first connecting piece is arranged in a manner of being matched with the mounting grooves and the mounting holes, the first connecting piece is inserted into and locked in the mounting holes and the mounting grooves, the bottom plate is mounted on the fixed base, and otherwise, the bottom plate can be detached from the mounting base;

correspondingly, two parallel mounting grooves are arranged, and two rows of the row holes are correspondingly arranged;

correspondingly, the mounting groove is an inverted T-shaped groove, and a clamping surface is provided for the first connecting piece through the inverted T-shaped groove, so that the first connecting piece is prevented from being separated from the notch of the mounting groove;

correspondingly, the inverted T-shaped groove is provided with at least one inverted hole, the diameter of the inverted hole is larger than or equal to the maximum width of the clamping part of the first connecting piece, so that the large end part of the first connecting piece can be conveniently inserted into the inverted T-shaped groove from the inverted hole and clamped in the inverted T-shaped groove, and the first connecting piece can move along the inverted T-shaped groove in the unlocked state of the first connecting piece, so that the connecting point of the bottom plate and the fixed base is adjusted;

correspondingly, the mounting hole is an oblong hole, and the length direction of the oblong hole is perpendicular to the extending direction of the mounting groove, so that the bottom plate can be mounted and adjusted in the length direction of the oblong hole, and the distance between the two groups of test units is adjusted;

correspondingly, a plurality of fixing holes are arranged on the fixing base at intervals, second connecting pieces are arranged corresponding to the fixing holes, and the fixing base is fixed on the ground in a downward embedded mode through the second connecting pieces and the fixing holes;

correspondingly, the fixed base is provided with a first lifting lug hole, and the first lifting lug hole is used for lifting when the fixed base is embedded;

correspondingly, the inclined side plates are arranged in a plurality and are positioned on the same inclined plane, each inclined side plate is separated by an internal rib plate, the internal rib plates are parallel to the outer end plates, and the supporting strength of the mounting base is enhanced by the internal rib plates;

correspondingly, a second lug hole is formed in the side plate, a third lug hole corresponding to the second lug hole is formed in the inclined side plate, and the second lug hole and the third lug hole are used for hoisting movement of the mounting base;

correspondingly, the side plate is provided with a plurality of operation holes, so that a hand can be conveniently stretched into a closed space through the operation holes to lock the second connecting piece, wherein the closed space is an inner space enclosed by the bottom plate, the side plate, the inclined side plate, the outer end plate and the top plate, or an inner space enclosed by the bottom plate, the side plate, the inclined side plate, the outer end plate, the inner rib plate and the top plate, or an inner space enclosed by the bottom plate, the side plate, the inclined side plate, the inner rib plate and the top plate;

correspondingly, the rubber shock absorption seat is arranged on the top plate, so that the direct hard connection between a machine to be tested and the top plate is avoided, the hard friction caused by resonance is avoided, and the mechanical loss is favorably reduced;

correspondingly, the width of the top plate is smaller than that of the bottom plate, and the mounting stability of the mounting base is improved.

The utility model has the beneficial effects that:

1) the fixed base is embedded into the ground in a downward embedding way and is further fixed through the fixed hole, so that the fixed base is fixedly installed, the bottom plate and the fixed base are detachably installed through the installation groove and the installation hole, before the first connecting piece is unlocked, the bottom plate can move in the extending direction of the mounting groove and the length direction of the mounting hole so as to adjust the fixing point, the mounting positions of the two groups of mounting bases in the extending direction of the mounting groove and the distance between the two groups of mounting bases are adjusted to adapt to different machines, after the first connecting piece is locked, the relative fixation of the mounting base and the fixed base is realized, thereby effectively fixing the machine arranged on the mounting base and avoiding the phenomenon that in the running process, the machine is displaced and jumped relative to the ground, so that errors of the structural noise test collected data caused by external reasons are reduced, and the reliability and the accuracy of the structural noise data are improved;

2) the supporting strength and stability of the mounting base are further improved through the assembling mode of the side plates, the inclined side plates, the outer end plates and the inner rib plates;

3) through set up rubber shock mount on the roof, avoid the test machine that awaits measuring and roof direct rigid connection, lead to taking place hard friction because of resonance, do benefit to and reduce mechanical loss.

Drawings

Fig. 1 is a schematic overall perspective view of a structural noise testing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the underside structure of the structure shown in FIG. 1 in a mounted state;

FIG. 3 is a perspective view of the fixing base;

FIG. 4 is a front view of the fixing base;

FIG. 5 is a perspective view of the mounting base;

FIG. 6 is a schematic front view of the base plate;

FIG. 7 is a front view of the side panel;

in the figure:

1. a fixed base; 11. a T-shaped groove is inverted; 12. inversely installing holes; 13. a fixing hole; 14. a first lug hole;

2. mounting a base; 21. a base plate; 211. a long round hole; 22. a side plate; 221. an operation hole; 222. a second lug hole; 23. an inclined side plate; 231. a third lug hole; 24. an outer end plate; 25. a top plate; 26. an internal rib plate;

3. a terrace.

Detailed Description

In the description of the present invention, it is to be understood that the terms used to indicate orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

As shown in fig. 1 and 2, in one embodiment of the present invention, the structural noise testing apparatus includes two sets of identically structured testing units, each set of testing units including a stationary base 1 and a mounting base 2, as shown in fig. 5, the mounting base 2 includes a bottom plate 21, a side plate 22, a diagonal side plate 23, an outer end plate 24, and a top plate 25, the bottom plate 21 is detachably provided on the stationary base 1, a side plate 22 and an inclined side plate 23 are arranged on the bottom plate 21 along the length direction of the bottom plate 21, the side plate 22 is vertically arranged on the bottom plate 21, the inclined side plate 23 is obliquely arranged on the bottom plate 21, outer end plates 24 perpendicular to both the side plates 22 and the inclined side plates 23 are vertically provided along the width direction of the bottom plate 21 at both ends of the bottom plate 21, a top plate 25 parallel to the bottom plate 21 is supported and arranged through the side plates 22, the inclined side plates 23 and the outer end plates 24, and the two groups of test units are symmetrically arranged by taking a straight line which is perpendicular to the vertical distance of the two groups of side plates 22 and passes through the midpoint of the vertical distance as a symmetry axis;

the bottom plate 21 is detachably provided on the stationary base 1 in the following manner: in the embodiment, for simplifying the description, as shown in fig. 3 and 4, the mounting groove is an inverted T-shaped groove 11, two inverted T-shaped grooves 11 parallel to each other are disposed on the fixing base 1, and two rows of holes are correspondingly disposed. In this embodiment, as shown in fig. 6, the row of holes includes 10 long circular holes 211 uniformly arranged at intervals, an arrangement direction of the 10 long circular holes 211 is consistent with an extension direction of the corresponding mounting groove, an orthographic projection of each long circular hole 211 on the fixed base 1 is partially overlapped with the mounting groove, and a length direction of each long circular hole 211 is perpendicular to an extension direction of the inverted T-shaped groove 11. In the embodiment, the first connecting piece is a stud bolt, the stud bolt is a screw rod, one end of the screw rod is provided with a nut, the other end of the screw rod is also provided with a nut or an end cap, and in order to facilitate the end cap end of the stud bolt to be clamped into the inverted T-shaped groove 11, therefore, the inverted T-shaped groove 11 is provided with at least one inverted hole 12;

in addition, as shown in fig. 3 and 4, a plurality of fixing holes 13 and first lug holes 14 are further arranged on the fixing base 1 at intervals, and a second connecting piece is arranged corresponding to the fixing holes 13, in this embodiment, the mounting groove and the long round hole 211 are avoided, 12 fixing holes 13 and 4 first lug holes 14 are arranged on the fixing base 1, the 12 fixing holes 13 are divided into 3 rows, each row is 4, one first lug hole 14 is arranged on the fixing base 1 near each of the four corners, the second connecting piece is a bolt, and the fixing base 1 is fixed on the ground in a downward embedded manner through the bolt and the fixing holes 13;

in this embodiment, as shown in fig. 7, 10 operation holes 221 are arranged on each side plate 22 along the length direction of the side plate 22, so that a hand can be inserted into a closed space through the operation holes 221 to perform a locking operation on the upper end of the stud bolt, and as shown in fig. 5, the closed space is an internal space enclosed by the bottom plate 21, the side plate 22, the inclined side plate 23, the outer end plate 24, and the top plate 25, or an internal space enclosed by the bottom plate 21, the side plate 22, the inclined side plate 23, the outer end plate 24, the internal rib plate 26, and the top plate 25, or an internal space enclosed by the bottom plate 21, the side plate 22, the inclined side plate 23, the internal rib plate 26, and the top plate 25, which is the same as below. In addition, a second lug hole 222 is arranged on the side plate 22, and a third lug hole 231 is arranged on the oblique side plate 23 corresponding to the second lug hole 222, in this embodiment, two ends of the side plate 22 are respectively provided with one second lug hole 222, and two ends of the oblique side plate 23 are provided with third lug holes 231 corresponding to the second lug holes 222 on the side plate 22;

in the present embodiment, a plurality of inclined side plates 23 are provided, the plurality of inclined side plates 23 are all on the same inclined surface, and some or all of the inclined side plates 23 have the same or different lengths, for example, in the present embodiment, since the length of the bottom plate 21 is not enough to provide all of the inclined side plates 23 with the same length, two inclined side plates 23 located at the outermost sides of both ends are shorter than the other inclined side plates 23. Therefore, there is no corresponding relationship between the positions of the middle oblique side plate 23 and the second lug hole 222, and therefore, the third lug hole 231 does not need to be provided in the middle oblique side plate 23, and only the two oblique side plates 23 located at the outermost sides of the two ends need to be provided with the corresponding third lug holes 231 in the positions corresponding to the second lug holes 222. Each inclined side plate 23 is separated by an internal rib plate 26, the internal rib plate 26 is parallel to the external end plate 24, under normal conditions, the internal rib plate 26 and the external end plate 24 have the same structure, and the difference is that only part of the internal rib plate 26 is accommodated in a closed space, the external end plate 24 and the internal rib plate 26 are both hexagonal structures, and can be simply seen as being formed by cutting off an acute angle in a right trapezoid by a tangent line parallel to the bottom edge of the right trapezoid, and the structure is more stable and firmer than the supporting structure of the right trapezoid, certainly, other structures capable of meeting the supporting function are not excluded;

the width of roof 25 is less than the width of bottom plate 21, improves the stability of mounting base 2 installation, in addition, in other embodiments, can also set up rubber shock mount on roof 25, avoids the machine that awaits measuring and roof 25 direct rigid connection, leads to because of the resonance takes place hard friction, does benefit to and reduces mechanical loss.

According to the structural noise test device of the present embodiment, the following usage methods can be obtained:

1) the fixing base 1 is lifted through the first lifting lug hole 14 and placed in the pre-buried position, the fixing base 1 is circumferentially fixed by means of concrete around the pre-buried position, and then the fixing base 1 and the concrete ground are further fixed through bolts, and similarly, another group of fixing bases 1 are installed in the method;

2) assembling a bottom plate 21, a side plate 22, an inclined side plate 23, an outer end plate 24, an inner rib plate 26 and a top plate 25 into a complete set of mounting base 2 according to the illustration in fig. 3;

3) the assembled mounting base 2 is hoisted to the fixed base 1 through the second lug hole 222 and the third lug hole 231;

4) evenly clamping 20 stud bolts into the two inverted T-shaped grooves 11, clamping the lower end of each stud bolt from the inverted hole 12, aligning the stud bolts with the long round holes 211, extending the upper ends of the stud bolts out of the long round holes 211, screwing nuts on the stud bolts through the operation holes 221, and realizing the fixed installation between the bottom plate 21 and the fixed base 1, and similarly, installing another group of bottom plates 21 by the method;

5) holes are drilled and tapped in the top plate 25, and the machine is fixed to the top plate 25 by bolts.

It should be noted that the above sequence is not the only possible sequence, and the sequence may be adjusted according to convenience in actual operation.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A structural noise test device is characterized by comprising two groups of test units with the same structure, each group of test units comprises a fixed base and a mounting base, the mounting base comprises a bottom plate, side plates, an inclined side plate, an outer end plate and a top plate, the bottom plate is detachably arranged on the fixed base, a side plate and an inclined side plate are arranged on the bottom plate along the length direction of the bottom plate, the side plate is vertically arranged on the bottom plate, the inclined side plate is obliquely arranged on the bottom plate, outer end plates perpendicular to the side plates and the inclined side plates are vertically arranged at both ends of the bottom plate along the width direction of the bottom plate, and the two groups of test units are symmetrically arranged by taking a straight line which is perpendicular to the vertical distance of the two groups of side plates and passes through the midpoint of the vertical distance as a symmetry axis through the side plates, the inclined side plates and the outer end plate which support and arrange the top plates parallel to the bottom plate.

2. The structural noise testing device of claim 1, wherein at least one mounting groove is formed in the fixing base and penetrates through two ends of the fixing base along the length direction of the fixing base, a row of holes is formed in the bottom plate, the number of rows of the row of holes corresponds to the number of the mounting grooves, the row of holes comprises a plurality of mounting holes which are arranged at intervals, the arrangement direction of the mounting holes is consistent with the extending direction of the corresponding mounting grooves, the orthographic projection of each mounting hole on the fixing base is partially overlapped with the mounting grooves, and a first connecting piece is arranged in a manner of being matched with the mounting grooves and the mounting holes.

3. A structural noise testing apparatus according to claim 2, wherein there are two said mounting slots parallel to each other and there are two said rows of holes correspondingly.

4. A structural noise testing apparatus according to claim 2, wherein said mounting groove is an inverted T-shaped groove.

5. A structural noise testing apparatus according to claim 4, wherein said inverted T-shaped slot is provided with at least one inverted hole.

6. A structural noise testing apparatus according to claim 2, wherein the mounting hole is an oblong hole, and a length direction of the oblong hole is perpendicular to an extending direction of the mounting groove.

7. A structural noise testing apparatus according to claim 1, wherein a plurality of fixing holes are spaced apart from each other on the fixing base, and a second connecting member is disposed corresponding to the fixing holes.

8. A structural noise testing device according to claim 1, wherein a plurality of inclined side plates are arranged, the inclined side plates are all arranged on the same inclined surface, each inclined side plate is separated by an internal rib plate, and the internal rib plates are parallel to the outer end plates.

9. A structural noise testing apparatus according to claim 1, wherein a plurality of access holes are provided in said side plate.

10. A structural noise testing apparatus according to claim 1, wherein a rubber damper is provided on said top plate.

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