CN106768754B - Vibration test fixture - Google Patents
Vibration test fixture Download PDFInfo
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- CN106768754B CN106768754B CN201611063758.5A CN201611063758A CN106768754B CN 106768754 B CN106768754 B CN 106768754B CN 201611063758 A CN201611063758 A CN 201611063758A CN 106768754 B CN106768754 B CN 106768754B
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 239000002184 metal Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
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Abstract
The invention discloses a vibration test fixture which comprises a first bottom cross beam, a second bottom cross beam, a first top longitudinal beam, a second top longitudinal beam and a plurality of positioning bolts, wherein the first bottom cross beam and the second bottom cross beam are arranged on a vibration table in parallel, the relative distance between the first bottom cross beam and the second top longitudinal beam is adjustable, the first top longitudinal beam and the second top longitudinal beam are arranged in parallel, the height and the relative distance between the first top longitudinal beam and the second top longitudinal beam are adjustable, and the plurality of positioning bolts penetrate through the first bottom cross beam and the second bottom cross beam respectively and are in threaded connection with the corresponding bottom cross beams so as to change the length of the positioning bolts extending out of the corresponding bottom. According to the vibration test fixture disclosed by the embodiment of the invention, the universality can be improved to a certain extent, parts in various shapes and sizes can be fixed on the vibration test bed, and the vibration test fixture does not need to be redesigned according to the shapes of the parts to be tested, so that the workload of personnel is reduced, and the vibration test is convenient to carry out.
Description
Technical Field
The invention relates to a clamp, in particular to a clamp for a vibration test.
Background
In order to ensure the strength of the parts, the parts need to be subjected to vibration tests before being assembled. Before the vibration test, a vibration test fixture for fixing the parts is required to be manufactured, and the parts to be tested are fixed on a vibration test bed. In the related art, the universality of the vibration test clamp is poor, and when vibration tests are performed on parts in different shapes, the vibration test clamps in different shapes need to be manufactured, so that the workload of personnel is increased, and the vibration tests are inconvenient to perform.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. The object of the invention is therefore to provide a vibration test fixture which has an improved versatility, at least to some extent.
The vibration test fixture comprises a first bottom cross beam, a second bottom cross beam, a first top longitudinal beam, a second top longitudinal beam and a plurality of positioning bolts, the first bottom cross beam and the second bottom cross beam are suitable for being fixed on a vibration table, the first bottom cross beam and the second bottom cross beam are arranged in parallel, the relative distance between the first bottom cross beam and the second bottom cross beam is adjustable, each of the first top longitudinal beam and the second top longitudinal beam is connected with the first bottom cross beam and the second bottom cross beam and is adjustable in height, the first top longitudinal beam and the second top longitudinal beam are arranged in parallel and are adjustable in relative distance, wherein a portion of the positioning bolts pass through the first bottom cross member and a remaining portion of the positioning bolts pass through the second bottom cross member, the positioning bolts are in threaded connection with the corresponding bottom cross beams so as to change the length of the positioning bolts extending out of the corresponding bottom cross beams.
The vibration test fixture can improve the universality to a certain extent, can fix parts with various shapes and sizes on the vibration test bed, further does not need to redesign the vibration test fixture according to the shapes of the parts to be tested, reduces the workload of personnel, and is convenient for the vibration test.
In addition, the vibration test fixture according to the present invention may further have the following additional technical features:
preferably, each of the first top longitudinal beam and the second top longitudinal beam is connected with the first bottom cross beam and the second bottom cross beam through a connecting bracket, each of the first top longitudinal beam and the second top longitudinal beam is adjustable in height relative to the connecting bracket, and the connecting bracket can slide on the corresponding bottom cross beam along the length direction of the bottom cross beam.
Furthermore, the connecting support comprises a base body and a screw rod arranged on the base body, the base body is slidably arranged on the bottom cross beam, the screw rod penetrates through the top longitudinal beam, and a locking nut assembly is arranged between the screw rod and the top longitudinal beam.
Still further, the lock nut assembly includes an upper lock nut and a lower lock nut, the upper lock nut and the lower lock nut being in threaded connection with the threaded rod and being located on the top surface and the bottom surface of the roof rail, respectively.
Furthermore, the seat body is in an inverted U shape, two ends of the seat body are respectively provided with sliding rails extending towards each other, a sliding groove is formed in the bottom cross beam, and the sliding rails are slidably arranged in the sliding groove.
Further, each of the first roof side rail and the second roof side rail is provided with a plurality of screw holes extending in a longitudinal direction of the roof side rail.
Preferably, the first roof side rail and the second roof side rail are both hollow metal square pipes.
Preferably, the plurality of positioning bolts on the first bottom cross beam and the plurality of positioning bolts on the second bottom cross beam correspond one to one in a direction orthogonal to the bottom cross beams.
Preferably, the tail of the positioning bolt is a positioning end, and a flexible structure is sleeved on the tail of the positioning bolt.
Further, the flexible structure is a rubber sleeve.
Drawings
FIG. 1 is a schematic structural diagram of a vibration test fixture according to an embodiment of the present invention;
fig. 2 is a top view of a vibration testing jig according to an embodiment of the present invention.
Reference numerals:
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "height", "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to 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 at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated 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 formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The invention is described below with reference to specific embodiments in conjunction with the accompanying drawings.
First, a vibration test jig 100 according to an embodiment of the present invention will be described with reference to fig. 1 and 2.
As shown in fig. 1 and 2, a vibration testing jig 100 according to an embodiment of the present invention may include a first bottom cross member 1, a second bottom cross member 2, a first top longitudinal member 3, a second top longitudinal member 4, and a plurality of positioning bolts 5, and when performing a vibration test on a component, the component to be tested may be fixed on a vibration table 200 through the vibration testing jig 100, and the vibration table 200 may vibrate to test a performance of the component to be tested when vibrating.
As shown in fig. 1 and 2, the first and second bottom beams 1 and 2 may be fixed to the vibration table 200, the first and second bottom beams 1 and 2 may be arranged in parallel in the X direction, and the relative distance between the first and second bottom beams 1 and 2 may be adjustable (i.e., the distance may be adjustable in the Y direction).
Specifically, a plurality of threaded positioning holes can be arranged at intervals along the Y direction on the vibration table 200, the Y direction can be perpendicular to the X direction, and after the distance between the first bottom beam 1 and the second bottom beam 2 is adjusted to a proper position, the first bottom beam 1 and the second bottom beam 2 can be connected with the vibration table 200 through the threaded positioning holes respectively penetrated by bolts. Hereby, it is achieved that the relative distance between the first bottom cross member 1 and the second bottom cross member 2 is adjustable.
Each of the first and second top stringers 3, 4 may be connected to the first and second bottom cross beams 1, 2, the first and second top stringers 3, 4 may be located above the first and second bottom cross beams 1, 2, and the first and second top stringers 3, 4 may be height-adjustable, that is, the first and second top stringers 3, 4 may move in the Z direction in fig. 1.
The first roof side rail 3 and the second roof side rail 4 may be arranged in parallel in the Y direction, and the relative distance between the first roof side rail 3 and the second roof side rail 4 is adjustable (i.e., the distance is adjustable in the X direction). In particular, the first roof rail 3 and the second roof rail 4 can each slide in the X direction on the first bottom cross member 1 and the second bottom cross member 2 relative to the two bottom cross members, so that the relative distance between the first roof rail 3 and the second roof rail 4 is adjustable.
A part of positioning bolt 5 can wear to establish first bottom crossbeam 1, and a part of positioning bolt 5 can wear to establish second bottom crossbeam 2, and positioning bolt 5 can stretch out the length that corresponds the bottom crossbeam with the bottom crossbeam threaded connection who corresponds with change positioning bolt 5 simultaneously to when the spare part that awaits measuring is placed on shaking table 200, positioning bolt 5 can press from both sides the tight spare part that awaits measuring in the Y direction, make the spare part that awaits measuring fix in the Y direction.
When the part is subjected to the vibration test, the part to be tested can be placed on the vibration table 200 in advance, the first bottom cross beam 1 and the second bottom cross beam 2 are placed on two sides of the part to be tested in the Y direction respectively, the first top longitudinal beam 3 and the second top longitudinal beam 4 are placed on two sides of the part to be tested in the X direction respectively, and the first top longitudinal beam 3 and the second top longitudinal beam 4 are located above the part to be tested respectively.
By adjusting the distance between the first bottom cross beam 1 and the second bottom cross beam 2 and changing the length of the positioning bolt 5 extending out of the corresponding bottom cross beam, the part to be tested can be clamped and fixed by the positioning bolt 5 in the Y direction.
By adjusting the distance between the first top longitudinal beam 3 and the second top longitudinal beam 4 and by changing the distance between the first top longitudinal beam 3 and the second top longitudinal beam 4, the sides of the first top longitudinal beam 3 and the second top longitudinal beam 4 opposite to each other can be clamped with the middle part to be tested along the X direction, and the part to be tested can be fixed in the X direction.
Meanwhile, by changing the heights of the first top longitudinal beam 3 and the second top longitudinal beam 4, the bottom surfaces of the first top longitudinal beam 3 and the second top longitudinal beam 4 can be jointly pressed against the part, extending out along the X direction, of the middle part of the part to be tested, so that the part to be tested is fixed in the Z direction.
According to the vibration test jig 100 of the embodiment of the invention, the first and second bottom cross members 1 and 2 which can adjust the distance therebetween are provided, and the positioning bolts 5 are provided on the first and second bottom cross members 1 and 2, so that the parts to be tested having various shapes and sizes can be fixed in the Y direction. By providing the first roof side rail 3 and the second roof side rail 4, the height and the distance between each other of which can be adjusted, it is possible to fix parts to be tested in various shapes and sizes in the X direction and the Z direction. Therefore, the vibration test fixture 100 can fix the parts to be tested in various shapes and sizes in the X, Y, Z three directions which are orthogonal to each other, the vibration test fixture 100 does not need to be redesigned according to the shapes of the parts to be tested, the universality is improved, the workload of personnel is reduced, and the vibration test is convenient to carry out.
Preferably, as shown in fig. 1, two connecting brackets 6 may be respectively disposed on the first bottom cross member 1 and the second bottom cross member 2 in the Y direction, and the first roof side member 3 may be connected to the two connecting brackets 6. The other two connecting brackets 6 can be respectively and correspondingly arranged on the first bottom cross beam 1 and the second bottom cross beam 2 at the positions spaced from the first top longitudinal beam 3 in the X direction, and the second top longitudinal beam 4 can be connected with the other two connecting brackets 6.
Both the first roof rail 3 and the second roof rail 4 can adjust their height in the connecting bracket 6, so that both the first roof rail 3 and the second roof rail 4 can slide relative to the connecting bracket 6 in the Z direction. The connecting brackets 6 can slide on the corresponding bottom cross beam along the length direction of the bottom cross beam, namely along the X direction, and the first top longitudinal beam 3 and the second top longitudinal beam 4 can slide together with the connecting brackets 6 along the X direction, so that the distance between the first top longitudinal beam 3 and the second top longitudinal beam 4 can be adjusted.
In some specific embodiments, as shown in fig. 1 and 2, the connecting bracket 6 may include a seat body 61 and a screw 62 disposed on the seat body 61, the seat body 61 may be slidably disposed on the bottom cross beam, the screw 62 may be disposed at a top end of the seat body 61 and extend upward in the Z direction, a plurality of screws 62 may respectively penetrate through the first top longitudinal beam 3 and the second top longitudinal beam 4, and the first top longitudinal beam 3 and the second top longitudinal beam 4 may move in the Z direction along the screws 62.
A locking nut assembly can be arranged between the screw rod 62 and the roof side rail, and when the first roof side rail 3 and the second roof side rail 4 move to a proper height in the Z direction, the locking nut assembly can fix the first roof side rail 3 and the second roof side rail 4 in the Z direction.
In some more specific embodiments, as shown in fig. 1 and 2, the lock nut assembly may include an upper lock nut 631 and a lower lock nut (not shown), the upper lock nut 631 may be threadably connected to the threaded rod 62 at the top and bottom surfaces of the roof rail, respectively, i.e., a plurality of upper lock nuts 631 may be mounted at the top surfaces of the first roof rail 3 and the second roof rail 4, respectively, and a plurality of lower lock nuts 631 may be mounted at the bottom surfaces of the first roof rail 3 and the second roof rail 4, respectively.
Thereby, the upper lock nut 631 and the lower lock nut can clamp the first roof side rail 3 and the second roof side rail 4 on both upper and lower sides in the Z direction, respectively, preventing the first roof side rail 3 and the second roof side rail 4 from moving in the Z direction with respect to the screw 62.
In some more specific embodiments, as shown in fig. 1, the seat body 61 may be an inverted "U" shape, the bottom surface of the "U" shaped seat body 61 may be provided with slide rails 611, two ends of two side surfaces of the "U" shaped seat body 61 may be respectively provided with slide rails 611 extending toward each other, two side surfaces of the first bottom beam 1 and the second bottom beam 2 along the Y direction may be respectively provided with slide grooves 11, and the slide rails 611 are slidably disposed in the slide grooves 11, so as to facilitate the sliding of the mounting bracket relative to the first bottom beam 1 and the second bottom beam 2.
More specifically, as shown in fig. 1 and 2, each of the first roof side rail 3 and the second roof side rail 4 may be provided with a plurality of screw holes 31 extending in the longitudinal direction of the roof side rail, that is, the plurality of screw holes 31 in each of the first roof side rail 3 and the second roof side rail 4 may extend in the Y direction, each two screws 62 may correspondingly penetrate the screw holes 31 in the X direction, so that the first roof side rail 3 or the second roof side rail 4 is mounted on the screws 62, and the distance between the first roof side rail 3 and the second roof side rail 4 may be further adjusted by penetrating the screws 62 through the screw holes 31 in different positions on the first roof side rail 3 or the second roof side rail 4.
In some preferred embodiments, as shown in fig. 1, the first roof side rail 3 and the second roof side rail 4 may be hollow metal square pipes, so that the weight of the first roof side rail 3 and the second roof side rail 4 may be reduced, and the assembly of the first roof side rail 3 and the second roof side rail 4 may be facilitated.
Preferably, as shown in fig. 1, the plurality of positioning bolts 5 on the first bottom cross beam 1 may correspond to the plurality of positioning bolts 5 on the second bottom cross beam 2 in a one-to-one manner in a direction orthogonal to the bottom cross beam, that is, the plurality of positioning bolts 5 on the first bottom cross beam 1 may correspond to the plurality of positioning bolts 5 on the second bottom cross beam 2 in a one-to-one manner in the Y direction, so that the positioning bolts 5 are more firmly fixed to the part to be tested in the Y direction.
Preferably, the tail portion of the positioning bolt 5 may be a positioning end, that is, the tail portion of the positioning bolt 5 may abut against the to-be-tested part to clamp the to-be-tested part, and the tail portion of the positioning bolt 5 may be sleeved with a flexible structure, so that the to-be-tested part may be prevented from being damaged due to an excessive pressure of the positioning bolt 5 on clamping the to-be-tested part.
Specifically, the flexible structure can be a rubber sleeve, so that the pressure of the positioning bolt 5 on clamping the part to be tested can be buffered, and the part to be tested is prevented from being damaged due to the fact that the pressure of the positioning bolt 5 on clamping the part to be tested is too large.
One embodiment of the present invention is described below in conjunction with fig. 1 and 2.
As shown in fig. 1 and 2, a vibration testing jig 100 according to an embodiment of the present invention may include a first bottom cross member 1, a second bottom cross member 2, a first top longitudinal member 3, a second top longitudinal member 4, and a plurality of positioning bolts 5, and when performing a vibration test on a component, the component to be tested may be fixed on a vibration table 200 through the vibration testing jig 100, and the vibration table 200 may vibrate to test the performance of the component when vibrating.
The first bottom beam 1 and the second bottom beam 2 may be fixed on the vibration table 200, the first bottom beam 1 may be arranged in parallel with the second bottom beam 2 along the X direction, and the relative distance between the first bottom beam 1 and the second bottom beam 2 may be adjustable.
A part of positioning bolt 5 can wear to establish first bottom crossbeam 1, and a part of positioning bolt 5 can wear to establish second bottom crossbeam 2, and positioning bolt 5 can stretch out the length that corresponds the bottom crossbeam with the bottom crossbeam threaded connection who corresponds with change positioning bolt 5 simultaneously to when the spare part that awaits measuring is placed on shaking table 200, positioning bolt 5 can be tight the spare part that awaits measuring in the both sides of the spare part that awaits measuring of Y direction clamp, make the spare part that awaits measuring fix in the Y direction.
In the Y direction, two connecting brackets 6 may be respectively disposed on the first bottom cross beam 1 and the second bottom cross beam 2, and the first top longitudinal beam 3 may be connected to the two connecting brackets 6. The other two connecting brackets 6 can be respectively and correspondingly arranged on the first bottom cross beam 1 and the second bottom cross beam 2 at the positions spaced from the first top longitudinal beam 3 in the X direction, and the second top longitudinal beam 4 can be connected with the other two connecting brackets 6.
The connecting bracket 6 may include a seat body 61 and a screw 62 disposed on the seat body 61, the seat body 61 may be slidably disposed on the bottom cross beam, the screw 62 may be disposed on the top end of the seat body 61 and extend upward in the Z direction, the plurality of screws 62 may respectively penetrate through the first top longitudinal beam 3 and the second top longitudinal beam 4, and the first top longitudinal beam 3 and the second top longitudinal beam 4 may move in the Z direction along the screws 62.
A lock nut assembly may be disposed between the screw 62 and the top longitudinal beam, when the first top longitudinal beam 3 and the second top longitudinal beam 4 move to a suitable height in the Z direction, the lock nut assembly may include an upper lock nut 631 and a lower lock nut (not shown in the drawings), the upper lock nut 631 may be in threaded connection with the screw 62 and respectively located on the top surface and the bottom surface of the bottom cross beam, and the lock nut assembly may fix the first top longitudinal beam 3 and the second top longitudinal beam 4 in the Z direction.
The seat body 61 may be an inverted "U" shape, two ends of two side surfaces of the "U" shaped seat body 61 may be respectively provided with a sliding rail 611 extending toward each other, two side surfaces of the first bottom cross beam 1 and the second bottom cross beam 2 along the Y direction may be respectively provided with a sliding groove 11, and the sliding rail 611 is slidably disposed in the sliding groove 11, so that the mounting bracket is convenient to slide relative to the first bottom cross beam 1 and the second bottom cross beam 2.
Each of the first roof side rail 3 and the second roof side rail 4 may be provided with a plurality of screw holes 31 extending in the roof side rail length direction, and the distance between the first roof side rail 3 and the second roof side rail 4 may be further adjusted by inserting screws 62 through the screw holes 31 at different positions on the first roof side rail 3 or the second roof side rail 4.
The first roof side rail 3 and the second roof side rail 4 may be hollow metal square pipes, so that the weight of the first roof side rail 3 and the second roof side rail 4 may be reduced, and the assembly of the first roof side rail 3 and the second roof side rail 4 may be facilitated.
The plurality of positioning bolts 5 on the first bottom cross beam 1 and the plurality of positioning bolts 5 on the second bottom cross beam 2 can be in one-to-one correspondence in the direction orthogonal to the bottom cross beams, so that the positioning bolts 5 can be more firmly fixed to the part to be tested in the Y direction.
The tail of the positioning bolt 5 can be stopped against the part to be tested so as to clamp the part to be tested, and the tail of the positioning bolt 5 can be sleeved with a rubber sleeve, so that the part to be tested can be prevented from being damaged due to the fact that the positioning bolt 5 has overlarge pressure on clamping the part to be tested.
According to the vibration test fixture 100 provided by the embodiment of the invention, parts to be tested with various shapes and sizes can be fixed in the X, Y, Z three directions which are orthogonal to each other, the vibration test fixture 100 does not need to be redesigned according to the shapes of the parts to be tested, the universality is improved, the workload of personnel is reduced, and the vibration test is convenient to carry out.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (5)
1. A vibration test fixture, comprising:
the first bottom cross beam and the second bottom cross beam are suitable for being fixed on a vibration table, and are arranged in parallel and adjustable in relative distance;
the first top longitudinal beam and the second top longitudinal beam are connected with the first bottom cross beam and the second bottom cross beam respectively and are adjustable in height, and the first top longitudinal beam and the second top longitudinal beam are arranged in parallel and are adjustable in relative distance;
a plurality of positioning bolts, wherein a portion of the positioning bolts pass through the first bottom cross member and a remaining portion of the positioning bolts pass through the second bottom cross member, the positioning bolts are in threaded connection with the corresponding bottom cross beams to change the length of the positioning bolts extending out of the corresponding bottom cross beams, the plurality of positioning bolts on the first bottom cross beam and the plurality of positioning bolts on the second bottom cross beam correspond one to one in a direction orthogonal to the bottom cross beams, each of the first and second top stringers is connected to the first and second bottom rails by a connecting bracket, each of the first top longitudinal beam and the second top longitudinal beam is adjustable in height relative to the connecting bracket, and the connecting bracket can slide on the corresponding bottom cross beam along the length direction of the bottom cross beam; the connection bracket includes: the base body and the setting are in screw rod on the base body, base body slidable ground sets up on the bottom crossbeam, the base body is "U" shape of invering, the both ends of base body are provided with the slide rail that extends each other towards respectively, are provided with the spout on the bottom crossbeam, slide rail slidable ground sets up in the spout, the top longeron is worn to establish by the screw rod, set up the lock nut subassembly between screw rod and the top longeron, the lock nut subassembly includes: the upper locking nut and the lower locking nut are in threaded connection with the screw rod and are respectively located on the top surface and the bottom surface of the top longitudinal beam.
2. A vibration test jig according to claim 1 wherein each of the first roof rail and the second roof rail is provided with a plurality of screw holes extending in a length direction of the roof rail.
3. A vibration test fixture as claimed in claim 1, wherein said first top rail and said second top rail are both hollow metal square tubes.
4. The vibration test fixture of claim 1, wherein the tail portion of the positioning bolt is a positioning end, and a flexible structure is sleeved on the tail portion of the positioning bolt.
5. A vibration test fixture according to claim 4, wherein the flexible structure is a rubber sleeve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611063758.5A CN106768754B (en) | 2016-11-25 | 2016-11-25 | Vibration test fixture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611063758.5A CN106768754B (en) | 2016-11-25 | 2016-11-25 | Vibration test fixture |
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| CN106768754A CN106768754A (en) | 2017-05-31 |
| CN106768754B true CN106768754B (en) | 2020-05-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015911A (en) * | 2006-02-06 | 2007-08-15 | 明基电通股份有限公司 | Universal assembly tool |
| CN102490133A (en) * | 2011-12-01 | 2012-06-13 | 河海大学常州校区 | Modularizing multipoint flexible fixture |
| CN203945290U (en) * | 2014-07-11 | 2014-11-19 | 精技电子（南通）有限公司 | A kind of clamping device of heated holder |
| CN204487417U (en) * | 2015-03-09 | 2015-07-22 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of vibration test fixture |
| CN104772727B (en) * | 2015-04-24 | 2017-05-17 | 严瑾 | Rigid-flexible blended clamp |
-
2016
- 2016-11-25 CN CN201611063758.5A patent/CN106768754B/en active Active
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| CN106768754A (en) | 2017-05-31 |
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