Universal clamp for acceleration test
By designing a universal fixture for acceleration testing, and utilizing the flexible adjustment of components such as the base plate, transition plate, support bars, and nuts, the fixture can be flexibly transformed, solving the problems of high cost, low efficiency, and complex management of existing fixtures, and improving testing efficiency and safety.
Patent Information
- Application Number
- CN202520270232.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Existing acceleration test fixtures are costly, time-consuming to prepare for tests, inefficient, and unsafe. Furthermore, their management is cumbersome, leading to delays in test schedules and waste of resources.
Design a universal clamp for acceleration testing, which uses components such as a base plate, transition plate, support bars, floating nuts and long screws. The installation hole positions on the clamp can be flexibly changed through the flexible adjustment of the components, so as to adapt to the installation requirements of different product models and simplify the investment and management of the clamp.
It reduced fixture investment costs, shortened the test preparation cycle, improved test efficiency and safety, reduced fixture management costs, and solved the problems of inconvenient fixture use and test delays.
Smart Images
Figure CN223808091U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of aviation technology, especially relates to a universal fixture of acceleration test. BACKGROUND
[0002] At present, acceleration test (6 directions of front, back, left, right, up and down) is carried out on the prepared fixture (2 pieces of horizontal plate and vertical plate) by punching and tapping according to the installation hole position of the test piece, the test piece is fixed on the fixture, and the fixture is fixed on the acceleration test equipment. Acceleration test of each type of product needs corresponding fixture (horizontal plate and vertical plate), and a new set of fixture needs to be invested or the hole is reconfigured at the appropriate position on the old fixture. The problems are as follows:
[0003] The new fixture increases the investment cost of the fixture; the new fixture and the hole configuration on the fixture increase the test waiting time; the existing fixture installation mode needs to be disassembled more than twice to complete the test of 6 directions, the test piece and the fixture are connected and fixed, the vertical direction installation is difficult, the fixture reversing is complex, and the test efficiency is not high; the test safety is not high. The original tapping and fixing method on the aluminum plate is easy to fail due to thread hole wear after repeated use, the thread hole needs to be checked, and the seriously worn thread hole needs to be reconfigured; the horizontal plate of the acceleration test and the vibration test is shared, and other models in the factory cannot be tested on the fixture when the fixture is carried to a third-party test unit; the fixture is inconvenient and conflicting to use, which affects the test progress; the fixture is found before the test, and the installation hole position is found; there are problems that the fixture or the installation hole position cannot be found, the test cannot be smoothly carried out, the human resource cost is increased, and the test efficiency is affected; the fixture management is complicated, the fixture is placed in the test site, and the management cost of the fixture is high. CONTENT OF THE UTILITY MODEL
[0004] In view of the problems in the background art, the utility model provides a universal fixture of acceleration test, which solves the problems in the prior art, effectively saves the investment cost of the fixture, and reduces the work links such as production cycle and hole configuration on the fixture; the test difficulty is reduced; the management cost of the fixture is reduced, the test preparation cycle and test time are shortened, and the test safety and test efficiency are improved.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme.
[0006] A universal fixture of acceleration test, comprising a bottom plate 1, a transition plate 2, a support strip one 3, a support strip two 4, a floating nut 5, a long screw rod 6 and a side plate 7.
[0007] The support strip two 4 has a mounting bracket installation hole on one side of the extension section, and the center positions of the support strip one 3 and the support strip two 4 have through hole grooves; the support strip two 4 is fixed above the support strip one 3 and vertically intersects, and the through hole grooves form a square product installation hole;
[0008] The test piece is fixed and installed on the support bar one 3 and the support bar two 4 through screws, nuts and gaskets, the support bar one 3 and the support bar two 4 are fixed and installed on the transition plate 2 through bolts and a floating nut 5, and the bottom plate 1 is fixed and installed on the test equipment through bolts.
[0009] Further,
[0010] When the test piece is tested in the horizontal direction, the transition plate 2 is horizontally placed on the bottom plate 1, and the transition plate 2 is horizontally fixed and installed on the bottom plate 1 through a long screw rod 6;
[0011] When the test piece is tested in the vertical direction, the transition plate 2 is vertically placed on the lug on one side of the bottom plate 1, and the transition plate 2 is vertically fixed and installed on the bottom plate 1 through the long screw rod 6 and a side plate 7.
[0012] Further,
[0013] The support bar two side extension section has a mounting rack installation hole, the support bar one and the support bar two center positions have through hole slots, the support bar two is fixed above the support bar one and vertically crosses, and the through hole slots form product installation holes; the positions of the two kinds of support bars are changed, flexible conversion of the mounting hole positions on the clamp is realized, and the clamp can meet the installation requirements of different models of products.
[0014] Further,
[0015] The transition plate center is hollowed out, each of four sides has a through hole slot, the floating nut is assembled below the transition plate through hole slot, and the limiting column of the floating nut is inserted into the transition plate through hole slot and can slide in the slot;
[0016] The bolt is sequentially connected with the support bar through hole, the transition plate through hole slot and the floating nut, the two kinds of support bars are fixed and installed on the transition plate, and the positions of the support bars can be changed.
[0017] Further,
[0018] The bottom plate has lugs on two sides, the transition plate has lugs on four sides, the center positions of the lugs have through holes, the transition plate is horizontally assembled on the bottom plate, the through holes are coaxial, and after the long screw rod is inserted, the transition plate can be horizontally fixed and installed on the bottom plate.
[0019] Further,
[0020] The transition plate is vertically placed on the lug on one side of the bottom plate, the through holes are coaxial, and the transition plate can be vertically fixed and installed on the bottom plate through the long screw rod and the side plate.
[0021] In summary, the application includes the following beneficial technical effects: the acceleration test universal clamp of the application only needs to adjust and change the components on the clamp to realize flexible conversion of the mounting hole positions on the clamp. This set of clamps can be compatible with different types of products in terms of product size and weight, mounting hole diameter, mounting hole number, mounting hole spacing, mounting method (with mounting rack and without mounting rack), and the like. The prototype is easy and fast to install and fix. Six test directions can be quickly switched during testing. The advantages are as follows: 1. The investment cost of the clamp, the waiting time for production, and the like are saved. 2. The hole matching work of punching and tapping on the clamp is saved. 3. The test piece and the clamp only need to be connected and fixed once, the speed of changing the direction of the clamp during testing is improved, the test cycle is shortened, the test difficulty is reduced, and the work efficiency is improved. 4. The original tapping and fixing method on the aluminum plate is prone to failure due to repeated use of the threaded hole. Now, the through hole is matched with a nut and a screw for installation, which improves the safety of the test. 5. The horizontal clamp for acceleration test and vibration test is shared, and when the clamp is carried to a third-party test unit, other types of clamps in the factory cannot be tested, which causes inconvenience and conflict in the use of the clamp. 6. The test status of finding the clamp and the mounting hole position during testing is solved, the human resource cost is reduced, and the test preparation cycle is shortened. 7. The management of the clamp is complicated, and the clamp is placed in a large number on the test site, which reduces the management cost of the clamp. The investment cost of the clamp, the production cycle, and the hole matching on the clamp can be effectively saved; the test difficulty is reduced; the management cost of the clamp is reduced, the test preparation cycle and the test time are shortened, the test safety and the test efficiency are improved, and the economic value and the social value are great. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0023] Figure 1 The acceleration test universal clamp (horizontal direction without mounting rack) installation structure schematic view provided by the utility model embodiment;
[0024] Figure 2 The acceleration test universal clamp (horizontal direction with mounting rack) installation structure schematic view provided by the utility model embodiment;
[0025] Figure 3 The acceleration test universal clamp (vertical direction without mounting rack) installation structure schematic view provided by the utility model embodiment;
[0026] Figure 4The acceleration test universal clamp (perpendicular direction with mounting rack) mounting structure schematic view provided by the embodiment of the utility model.
[0027] The reference signs are explained as follows: 1, bottom plate; 2, transition plate; 3, strut one; 4, strut two; 5, traveling nut; 6, long screw rod; and 7, side plate. DETAILED DESCRIPTION
[0028] The utility model will be described in detail below with reference to the drawings.
[0029] The embodiment of the utility model provides a kind of acceleration test universal clamp, including bottom plate, transition plate, strut one, strut two, traveling nut, long screw rod and side plate.
[0030] Strut two one side extension section has mounting rack mounting through-hole.The center position of strut one and strut two is all provided with through-hole slot.The number of strut can be increased or decreased according to requirement.Strut two is vertically crossed and fixed above strut one, and through-hole slot forms square product mounting through-hole.Change the position of two kinds of struts, realize the flexible conversion of product mounting hole position on clamp.Test piece is fixedly installed on strut one and strut two by screw, nut and gasket.Strut one and strut two are fixedly installed on transition plate by bolt and traveling nut.Bottom plate is fixedly installed on test equipment by bolt.
[0031] When testing test piece in horizontal direction (4 directions): transition plate is horizontally placed on bottom plate, and is fixedly installed on bottom plate by long screw rod.
[0032] When testing test piece in vertical direction (2 directions): transition plate is vertically placed on the lug on the side of bottom plate, and is fixedly installed on bottom plate by long screw rod and side plate.
[0033] As shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 Acceleration test universal clamp, including bottom plate, transition plate, strut one, strut two, traveling nut, long screw rod and side plate.
[0034] Strut one and strut two are made of 30CrMnSiA material.By replacing strut one and strut two (mounting rack mounting through-hole diameter is different, center position through-hole slot width is different), test piece with different specifications of fixed screw can be correspondingly fixed.Taking test piece with commonly used screw specifications (M4-M6) as an example:
[0035] The two ends of the first strut each have a through hole (φ10.3mm). The two ends of the second strut each have a counterbore (counterbore φ22mm, through hole φ10.3mm), and one side of the extension section has a mounting bracket mounting through hole (diameter φ6.3mm). The center of the first strut and the second strut each has a through hole slot (width 6.3mm), and the number of struts can be increased or decreased as needed. When the clamp is assembled, the second strut is above the first strut and is fixed perpendicularly, and the through hole slot forms a square product mounting through hole. By changing the positions of the two types of struts, the flexibility of the product mounting hole on the clamp can be changed, and the clamp can meet the installation needs of different types of products. By using a screw to successively pass through the test piece mounting hole, the square mounting through hole formed by the first strut and the second strut, and the nut, the test piece with a screw size of M4-M6 can be fixed and installed on the strut.
[0036] By analogy: when the diameter of the mounting bracket mounting through hole and the width of the through hole slot are 3.2mm, test pieces with screw sizes of M1-M3 can be fixed.
[0037] The floating nut is made of 30CrMnSiA material. The floating nut is square, with a threaded through hole (M10) in the center and two limiting columns (height slightly lower than the thickness of the transition plate, width 10.8mm) extending from one side.
[0038] The transition plate is made of aviation hard aluminum. The center of the transition plate is hollow, and each of the four sides has a through hole slot (slot width 11mm). The floating nut is assembled below the through hole slot of the transition plate, and the limiting column is inserted into the through hole slot and can slide in the slot. By using a M10 bolt to successively pass through the strut assembly through hole, the transition plate through hole slot and the floating nut, the first strut and the second strut can be fixed and installed on the transition plate.
[0039] First, remove the transition plate (including the strut) from the bottom plate, place it aside and support it with two wooden blocks (height 10cm) to make the strut suspended below, making it easier to fix the test piece to the strut.
[0040] The long screw rod is made of 30CrMnSiA material, with a diameter of φ20mm and a length greater than the length of the transition plate.
[0041] The bottom plate is made of aviation hard aluminum. Each of the two sides of the bottom plate has three tabs, and each of the four sides of the transition plate has two tabs. The center of all the tabs has a through hole (diameter φ20.5mm). The transition plate is horizontally assembled on the bottom plate, and the through holes on both sides of the bottom plate are coaxial with the through holes on both sides of the transition plate. After inserting two long screw rods, the transition plate can be horizontally fixed and installed on the bottom plate. The bottom plate has a mounting through hole, and the bottom plate can be fixed and installed on the acceleration test equipment through a bolt.
[0042] By changing the assembly direction of the transition plate on the bottom plate, the test of the test piece in the horizontal direction (4 directions) can be carried out. Figure 1 (without mounting bracket), Figure 2(With mounting rack) is test piece horizontal direction installation structure schematic view.
[0043] The side plate is made of aviation hard aluminum material. The side plate is triangular, and each of three corners is provided with a through hole (diameter φ20.5mm).
[0044] The transition plate is vertically placed on the lug on one side of the base plate, and the through holes are coaxial. The transition plate can be vertically fixed and installed on the base plate through the three long screws and the two side plates. The test of the vertical direction (two directions) of the test piece can be carried out. Figure 3 (Without mounting rack), Figure 4 (With mounting rack) is test piece vertical direction installation structure schematic view.
[0045] The utility model provides a kind of acceleration test universal fixture, including bottom plate, transition plate, branch one, branch two, traveler nut, long screw and side plate. Branch two side extension section has mounting rack installation through hole, and the center position of branch one and branch two is all provided with through hole slot, and branch two is vertically crossed fixed above branch one, and through hole slot forms square product installation through hole. Test piece is fixedly installed on branch one and branch two by screw, nut, gasket. Branch one, branch two are fixedly installed on transition plate by bolt and traveler nut. Only need to change the position of branch one and branch two, the flexible change of mounting hole position on fixture can be realized. A set of fixture can be compatible with fixed (except special-shaped product) size, weight, installation hole diameter, installation hole quantity, installation hole spacing, installation mode (with mounting rack and without mounting rack) different, various models of product. Complete 6 directions test, test piece and fixture connection fixed only need to disassemble and assemble once (need to disassemble and assemble more than twice before), can quickly change 6 test directions. Can effectively save fixture investment cost, production cycle, fixture hole etc. work link;Reduce test difficulty;Reduce fixture management cost, shorten test preparation cycle and test time, improve test safety and test efficiency.
[0046] The above is only the specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be limited by the protection scope of claim.
Claims
1. An acceleration test universal fixture, characterized by, It comprises a bottom plate (1), a transition plate (2), a first support (3), a second support (4), a floating nut (5), a long screw rod (6), and a side plate (7). The first support (3) and the second support (4) are fixed perpendicularly above the first support (3), and the through-hole slots form a square product mounting hole. The test piece is fixed and installed on the first support (3) and the second support (4) through screws, nuts, and gaskets, and the first support (3) and the second support (4) are fixed and installed on the transition plate (2) through bolts and the floating nut (5), and the bottom plate (1) is fixed and installed on the test equipment through bolts.
2. The universal clamp for acceleration test according to claim 1, characterized in that, When the test piece is tested horizontally, the transition plate (2) is placed horizontally on the bottom plate (1), and the transition plate (2) is fixed and installed horizontally on the bottom plate (1) through the long screw rod (6); When the test piece is tested vertically, the transition plate (2) is placed vertically on the lug on one side of the bottom plate (1), and the transition plate (2) is fixed and installed vertically on the bottom plate (1) through the long screw rod (6) and the side plate (7).
3. The universal fixture for acceleration testing of claim 1, wherein, The first support and the second support have through-hole slots at the center positions, the second support is fixed perpendicularly above the first support, and the through-hole slots form a product mounting hole; the positions of the two supports are changed to realize flexible conversion of the mounting hole positions on the clamp, and the clamp can meet the mounting requirements of different models of products.
4. The universal fixture for acceleration testing of claim 1, wherein, The transition plate is hollow at the center, has a through-hole slot on each of the four edges, and the floating nut is assembled directly below the through-hole slot of the transition plate, and the limiting column of the floating nut is inserted into the through-hole slot of the transition plate and can slide in the slot; The bolt is connected with the floating nut by passing through the through hole of the support and the through-hole slot of the transition plate in sequence, and the two supports are fixed and installed on the transition plate, and the position of the support can be changed.
5. The universal fixture for acceleration testing of claim 1, wherein, The bottom plate has lugs on both sides, the transition plate has lugs on the four edges, the lugs have through holes at the center positions, the transition plate is horizontally assembled on the bottom plate, the through holes are coaxial, and the transition plate can be fixed and installed horizontally on the bottom plate after being inserted into the long screw rod.
6. The universal fixture for acceleration testing of claim 1, wherein, The transition plate is placed vertically on the lug on one side of the bottom plate, the through holes are coaxial, and the transition plate can be fixed and installed vertically on the bottom plate through the long screw rod and the side plate.