Vibration test bench

Abstract

The utility model relates to the technical field of vibration test, in particular to a vibration test board, which comprises a fixed seat, a test frame plate capable of moving up and down is arranged above a support plate, a motor is arranged on the upper surface of the fixed seat close to the right end, and a linkage assembly is sequentially provided with a crankshaft, a connecting rod and a connecting seat from bottom to top. A positioning seat is arranged at the bottom of the test frame plate corresponding to the sliding column; a positioning plate capable of moving up and down is arranged in the middle of the limiting plate; according to the vibration test bench, the test frame plate is inserted and matched with the supporting plate, the sliding rod is matched with the spring to realize rapid rebound matching at the edge of the test frame plate, and under the matching of the linkage assembly, the motor provides power, and the crankshaft rotates to drive the connecting rod and the connecting seat to rotate, so that the test frame plate reciprocates up and down, and vibration is simulated; the positioning plate is fixed to the test frame plate through the positioning screw rod, stable clamping cooperation of objects of different sizes is achieved, and the situation that the vibration test object is separated from the test frame plate and influences test use is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to vibration test technical field, concretely is a vibration test platform. BACKGROUND

[0002] The vibration test platform is used for simulating various vibration environmental influences encountered by products in transportation, installation and use environments, and is used for determining whether the products can bear various environmental vibration capacities.

[0003] The utility model discloses a vibration test platform discloses a kind of vibration test platform, including platform, vibration motor is arranged in the lower of the platform, the output end of the vibration motor is fixedly connected with the bottom surface of platform, the bottom surface of the platform is fixedly connected with two groups of telescopic rods, the inside of the platform is equipped with cavity, two sliding blocks are arranged in the inside of the cavity, the right side surface of each sliding block is equipped with threaded hole, the inner wall of the cavity is fixedly embedded with first bearing, the left side surface of the platform is fixedly embedded with second bearing, the inner ring of the first bearing is fixedly connected with positive and negative screw rod;

[0004] The above technical scheme, by being equipped with the cooperation of positive and negative screw rod, sliding block, threaded hole and clamping plate, using the rotation of positive and negative screw rod, sliding block can move on positive and negative screw rod, two sliding blocks can drive two clamping plates to be close to each other, can gradually form the clamping fixation of experimental article, can prevent experimental article to appear drop damage condition;But when simulating vibration, vibration motor cannot be avoided, and mechanical vibration cooperation is carried out continuously, and when experimental product is placed, it is not convenient to quickly place or take out the tested object, and the stability of placement cannot be increased. SUMMARY

[0005] The utility model discloses a kind of vibration test platform, to solve the problem raised in above background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of vibration test bench, including fixed seat, several columns are equipped above the fixed seat, the top of the column is equipped with support plate, the support plate top is equipped with the test frame plate that can move up and down, the upper surface of the fixed seat is equipped with motor near right end, the upper surface of the support plate is opened in the sliding hole near four corners, the upper surface of the support plate is equipped with boss in middle, the boss is opened in circular groove in middle, the support plate below is equipped with linkage assembly, the linkage assembly is sequentially equipped with crankshaft, connecting rod and connecting seat from below to above, the crankshaft both ends are equipped with main shaft in center, the output shaft of the motor is coaxially connected with main shaft, the connecting rod both ends are equipped with eye, the connecting seat bottom is equipped with rotating shaft, the connecting seat top is equipped with sliding column with corresponding place, the sliding column top is opened in locating hole, the test frame plate bottom is equipped with locating seat with corresponding place of sliding column, the locating seat bottom is opened in insertion slot, the outer wall of the locating seat is opened in perforation with corresponding place of locating hole, the perforation is equipped with threaded rod, the test frame plate top is equipped with limit plate, the limit plate middle is equipped with the locating plate that can move up and down.

[0008] Further, the width of the outer wall of the locating plate is adapted to the width of the inner wall of the limit plate, the inner walls on both sides of the limit plate are opened in ladder-shaped grooves, and the outer wall of the locating plate is equipped with ladder-shaped blocks with corresponding places of the ladder-shaped grooves.

[0009] In the utility model, the ladder-shaped blocks and the ladder-shaped grooves are inserted and matched, the locating plate stably moves up and down in the middle of the limit plate, and the different sizes of objects that need vibration test are clamped and matched, so that the stability of the object placement is increased.

[0010] Specifically, a plurality of air holes are opened in the locating plate, a second rubber pad is arranged on the lower surface of the locating plate, a first rubber pad is arranged on the upper surface of the test frame plate, a second protrusion is further arranged at the right end of the locating plate, a circular opening is opened in the second protrusion, a locating screw rod is arranged in the circular opening, and a knob is arranged on the top of the locating screw rod.

[0011] In the utility model, the cooperation of the plurality of air holes facilitates the air cooperation of the clamped object below the locating plate, the locating plate moves up and down conveniently, the cooperation of the first rubber pad increases the friction with the clamped object, the damage to the clamped object is reduced during fixed clamping, the knob on the locating screw rod helps to manually rotate and adjust the position of the locating screw rod.

[0012] Secondly, an opening is opened in the limit plate at the corresponding place of the second protrusion at the right end, a first protrusion is arranged at the right end of the limit plate near the bottom, and a screw hole is opened in the top of the first protrusion.

[0013] The utility model discloses, the cooperation of first lug and second lug realizes that the positioning screw rod passes through the round mouth on second lug and is connected with the screw hole on first lug, realizes the position fixed between positioning plate and test frame board, and the middle article is clamped closely, reduces the influence of vibration test leading to object falling.

[0014] Need explanation is, the test frame board lower surface with the slide hole corresponding place all is equipped with slide rod, the slide rod outer wall all is equipped with spring, and the slide rod inner diameter is compatible with the slide hole inner diameter.

[0015] The utility model discloses, slide rod and slide hole sliding fit, and one end of spring is bonded fixed with test frame board, and the other end support plate bonding fixed, and spring has elastic potential energy, and test frame board is down, and extrudes spring, and under the cooperation of elastic potential energy, it is helpful to test frame board quick rebound to initial position.

[0016] Further, the bottom of the stand is welded and fixed with the top of the fixing base, the top of the stand is welded and fixed with the bottom of the support plate, and the boss and the support plate are an integral molding structure.

[0017] The utility model discloses, boss and support plate are an integral structure, increase the stability of whole combination, and realize support plate and fixing base stable combination installation cooperation under the cooperation of stand.

[0018] Specifically, the crankshaft is rotatably connected with two opposite stands through the main shaft, the sleeve ring and the connecting rod are an integral molding structure, one of the sleeve rings is rotatably connected with the crankshaft, and the other sleeve ring is rotatably connected with the rotating shaft on the connecting base, and the bottom of the sliding column is welded and fixed with the top of the connecting base.

[0019] The utility model discloses, the cooperation of two sleeve rings and connecting rod realizes that the crankshaft is rotatably connected with the connecting base, and the crankshaft continuously rotates under the cooperation of motor, realizes that the sliding column stably moves up and down in the boss.

[0020] It is worth supplementing that the arc-shaped blocks are symmetrically arranged on the outer wall of the sliding column, the inner diameter of the circular groove is adapted to the outer diameter of the sliding column, first arc-shaped grooves are symmetrically formed in the inner wall of the circular groove, the positioning seat is welded and fixed with the test frame board, the inner diameter of the insertion groove is adapted to the outer diameter of the sliding column, and second arc-shaped grooves are symmetrically formed in the inner wall of the insertion groove.

[0021] The utility model discloses, arc-shaped block and sliding column are an integral molding structure, and arc-shaped block and first arc-shaped groove slide and insert, realize that the sliding column stably moves up and down, and arc-shaped block and second arc-shaped groove insert cooperation, realize that the top of the sliding column is stably inserted and cooperated with the positioning seat, and it is convenient to realize the fixed installation of the sliding column and test frame board quickly.

[0022] Further, the inner diameter of the through hole is matched with the inner diameter of the positioning hole, the outer diameter of the threaded rod is matched with the inner diameter of the positioning hole, a connecting hole is arranged on the outer wall of the test rack plate corresponding to the threaded rod, and a nut is arranged at the end of the threaded rod.

[0023] In the utility model, the threaded rod passes through the connecting hole and the positioning hole, thereby realizing stable installation of the sliding column and the positioning seat, the nut is threadedly connected with the threaded rod, and the position of the threaded rod is fixed.

[0024] Compared with the prior art, the utility model has the beneficial effects that:

[0025] 1. The utility model discloses a test rack plate and a support plate are inserted and matched, a spring is matched on the slide rod to realize quick rebound matching at the edge of the test rack plate, under the cooperation of the linkage assembly, the motor provides power, the connecting rod and the connecting seat are driven to rotate by the rotation of the crankshaft, the test rack plate is realized up-down reciprocating movement, thereby simulating vibration, realizing vibration test cooperation of the object placed on the test rack plate, the positioning plate is fixed with the test rack plate through the positioning screw rod, realizing stable clamping cooperation of different size objects, reducing the influence of the object on the test use during vibration test.

[0026] The utility model discloses a threaded rod with nut, realizing the quick fixing of the sliding column on the top of the connecting seat and the positioning seat at the bottom of the test rack plate, and the cooperation of the arc block on the sliding column realizes the stable installation cooperation of the sliding column and the boss and the positioning seat, the positioning plate is inserted and matched under the cooperation of the ladder-shaped block and the ladder-shaped groove, which helps to stably move up and down and clamp the middle object, the air vent facilitates internal exhaust without affecting the up-down movement, under the cooperation of the first rubber pad and the second rubber pad, the friction force with the object is increased, and the impact damage of the object is reduced. ACCURATE DRAWINGS

[0027] Figure 1 It is the whole structure schematic diagram of the utility model;

[0028] Figure 2 It is the vibration test state schematic diagram of the utility model;

[0029] Figure 3 It is the fixed seat and the support plate, linkage assembly combined structure schematic diagram of the utility model;

[0030] Figure 4 It is the fixed seat and the support plate combined structure schematic diagram of the utility model;

[0031] Figure 5 It is the linkage assembly structure schematic diagram of the utility model;

[0032] Figure 6 It is the test rack plate bottom view schematic diagram of the utility model;

[0033] Figure 7 It is the test rack plate and positioning plate combination structure schematic view of the utility model.

[0034] Figure 8 It is the whole cross section structure schematic view of the utility model.

[0035] The meaning of each mark in the figure is:

[0036] 1, fixed seat, 10, stand, 11, support plate, 110, sliding hole, 12, boss, 120, round groove, 121, first arc-shaped groove,

[0037] 2, test rack plate, 20, sliding rod, 200, spring, 21, positioning seat, 210, slot, 211, second arc-shaped groove, 212, through hole, 22, connecting hole, 23, threaded rod, 230, nut, 24, limiting plate, 240, first rubber pad, 241, ladder-shaped groove, 242, notch, 243, first protruding block, 244, screw hole,

[0038] 3, positioning plate, 30, air hole, 31, ladder-shaped block, 32, second protruding block, 320, round mouth, 33, positioning screw, 330, knob, 34, second rubber pad,

[0039] 4, linkage assembly, 40, crankshaft, 400, main shaft, 41, connecting rod, 410, collar, 42, connecting seat, 420, rotating shaft, 421, sliding column, 422, arc-shaped block, 423, positioning hole,

[0040] 5, motor. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0042] Please refer to Figures 1-8 The embodiment provides a technical scheme:

[0043] A kind of vibration test bench, including fixed seat 1, several columns 10 are equipped above fixed seat 1, support plate 11 is equipped at the top of column 10, test frame plate 2 is equipped above support plate 11 and can move up and down, motor 5 is equipped at the upper surface of fixed seat 1 near right end, sliding hole 110 is formed in the upper surface of support plate 11 near four corners, the width of the outer wall of positioning plate 3 is adapted to the width of the inner wall of limiting plate 24, ladder-shaped groove 241 is formed in the inner wall of limiting plate 24 on both sides, and ladder-shaped block 31 is arranged on the outer wall of positioning plate 3 corresponding to ladder-shaped groove 241.

[0044] In the utility model, the ladder-shaped block 31 is inserted and matched with the ladder-shaped groove 241, the positioning plate 3 is stably moved up and down in the limiting plate 24, and then the vibration test object of different sizes is clamped and matched, so that the stability of the object is increased.

[0045] Further, the convex table 12 is arranged at the middle of the upper surface of the support plate 11, the width of the outer wall of the positioning plate 3 is adapted to the width of the inner wall of the limiting plate 24, the ladder-shaped groove 241 is formed in the inner wall of the limiting plate 24 on both sides, and the ladder-shaped block 31 is arranged on the outer wall of the positioning plate 3 corresponding to the ladder-shaped groove 241.

[0046] In the utility model, the ladder-shaped block 31 is inserted and matched with the ladder-shaped groove 241, the positioning plate 3 is stably moved up and down in the limiting plate 24, and then the vibration test object of different sizes is clamped and matched, so that the stability of the object is increased.

[0047] It should be noted that the circular groove 120 is formed in the middle of the convex table 12, the linkage assembly 4 is arranged below the support plate 11, the linkage assembly 4 is sequentially provided with the crankshaft 40, the connecting rod 41 and the connecting seat 42 from bottom to top, the main shaft 400 is arranged at the center of both ends of the crankshaft 40, the output shaft of the motor 5 is coaxially connected with the main shaft 400, the sleeve ring 410 is arranged at both ends of the connecting rod 41, the rotating shaft 420 is arranged at the bottom of the connecting seat 42, the sliding column 421 is arranged at the top of the connecting seat 42, the positioning hole 423 is formed in the top of the sliding column 421, the crankshaft 40 is rotationally connected with two opposite columns 10 through the main shaft 400, the sleeve ring 410 and the connecting rod 41 are integrally formed, one sleeve ring 410 is rotationally connected with the crankshaft 40, the other sleeve ring 410 is rotationally connected with the rotating shaft 420 on the connecting seat 42, and the bottom of the sliding column 421 and the top of the connecting seat 42 are welded and fixed.

[0048] In the utility model, the two sleeve rings 410 are matched with the connecting rod 41, the crankshaft 40 is rotationally connected with the connecting seat 42, the crankshaft 40 is continuously rotated under the cooperation of the motor 5, and the sliding column 421 is stably moved up and down in the convex table 12.

[0049] Further, the outer wall of the sliding column 421 is symmetrically provided with arc blocks 422, the inner diameter of the circular groove 120 is matched with the outer diameter of the sliding column 421, the inner wall of the circular groove 120 is symmetrically provided with first arc grooves 121, the positioning seat 21 is welded and fixed with the test rack plate 2, the inner diameter of the insertion groove 210 is matched with the outer diameter of the sliding column 421, and the inner wall of the insertion groove 210 is symmetrically provided with second arc grooves 211.

[0050] In the utility model, the arc block 422 and the sliding column 421 are integrally formed, the arc block 422 is slidably inserted into the first arc groove 121, the sliding column 421 is stably moved up and down, the arc block 422 is inserted into the second arc groove 211, the top of the sliding column 421 is stably inserted into the positioning seat 21, and the sliding column 421 is quickly and fixedly installed with the test rack plate 2.

[0051] Specifically, the positioning seat 21 is arranged at the corresponding position of the bottom of the test rack plate 2 and the sliding column 421, the insertion groove 210 is formed in the bottom of the positioning seat 21, the through hole 212 is formed in the outer wall of the positioning seat 21 and corresponds to the positioning hole 423, the threaded rod 23 is arranged in the through hole 212, the crankshaft 40 is rotatably connected with two opposite vertical columns 10 through the main shaft 400 and the sleeve ring 410, one of the sleeve rings 410 is rotatably connected with the crankshaft 40, the other sleeve ring 410 is rotatably connected with the rotating shaft 420 on the connecting seat 42, and the bottom of the sliding column 421 is welded and fixed with the top of the connecting seat 42.

[0052] In the utility model, the two sleeve rings 410 are matched with the connecting rod 41, the crankshaft 40 is rotatably connected with the connecting seat 42, the crankshaft 40 is continuously rotated under the cooperation of the motor 5, and the sliding column 421 is stably moved up and down in the boss 12.

[0053] It is worth supplementing that the outer wall of the sliding column 421 is symmetrically provided with arc blocks 422, the inner diameter of the circular groove 120 is matched with the outer diameter of the sliding column 421, the inner wall of the circular groove 120 is symmetrically provided with first arc grooves 121, the positioning seat 21 is welded and fixed with the test rack plate 2, the inner diameter of the insertion groove 210 is matched with the outer diameter of the sliding column 421, and the inner wall of the insertion groove 210 is symmetrically provided with second arc grooves 211.

[0054] In the utility model, the arc block 422 and the sliding column 421 are integrally formed, the arc block 422 is slidably inserted into the first arc groove 121, the sliding column 421 is stably moved up and down, the arc block 422 is inserted into the second arc groove 211, the top of the sliding column 421 is stably inserted into the positioning seat 21, and the sliding column 421 is quickly and fixedly installed with the test rack plate 2.

[0055] Further, the top of the test rack plate 2 is provided with a limiting plate 24, the width of the outer wall of the positioning plate 3 is matched with the width of the inner wall of the limiting plate 24, the inner wall of the two sides of the limiting plate 24 is provided with a ladder-shaped groove 241, and the outer wall of the positioning plate 3 is provided with a ladder-shaped block 31 corresponding to the ladder-shaped groove 241.

[0056] In the utility model, the ladder-shaped block 31 is inserted and matched with the ladder-shaped groove 241, the positioning plate 3 is stably moved up and down in the middle of the limiting plate 24, and then the different sizes of the objects needing vibration test are clamped and matched, so that the stability of the object placement is increased.

[0057] Secondly, the limiting plate 24 is provided with the positioning plate 3 which can move up and down.

[0058] Specifically, the width of the outer wall of the positioning plate 3 is matched with the width of the inner wall of the limiting plate 24, the inner wall of the two sides of the limiting plate 24 is provided with a ladder-shaped groove 241, and the outer wall of the positioning plate 3 is provided with a ladder-shaped block 31 corresponding to the ladder-shaped groove 241.

[0059] In the utility model, the ladder-shaped block 31 is inserted and matched with the ladder-shaped groove 241, the positioning plate 3 is stably moved up and down in the middle of the limiting plate 24, and then the different sizes of the objects needing vibration test are clamped and matched, so that the stability of the object placement is increased.

[0060] Further, the positioning plate 3 is provided with a plurality of air holes 30, the lower surface of the positioning plate 3 is provided with a second rubber pad 34, the upper surface of the test rack plate 2 is provided with a first rubber pad 240, the right end of the positioning plate 3 is further provided with a second protruding block 32, the second protruding block 32 is provided with a round opening 320, the round opening 320 is provided with a positioning lead screw 33, and the top of the positioning lead screw 33 is provided with a handle 330.

[0061] In the utility model, the cooperation of the plurality of air holes 30 facilitates the air cooperation of the clamped object below the positioning plate 3, the positioning plate 3 is moved up and down conveniently, the cooperation of the first rubber pad 240 increases the friction force with the clamped object, the damage to the clamped object is reduced when fixed and clamped, the handle 330 is matched on the positioning lead screw 33, and the position of the positioning lead screw 33 is adjusted manually

[0062] Specifically, the right end of the limiting plate 24 is provided with a gap 242 corresponding to the second protruding block 32, the right end of the limiting plate 24 is provided with a first protruding block 243 close to the bottom, and the top of the first protruding block 243 is provided with a threaded hole 244.

[0063] In the utility model, the cooperation of the first protruding block 243 and the second protruding block 32 realizes that the positioning lead screw 33 passes through the round opening 320 on the second protruding block 32 and is threadedly connected with the threaded hole 244 on the first protruding block 243, the position between the positioning plate 3 and the test rack plate 2 is fixed, the middle object is tightly clamped and matched, and the influence of the object falling caused by vibration test is reduced.

[0064] In addition, the width of the outer wall of the positioning plate 3 is matched with the width of the inner wall of the limiting plate 24, the ladder-shaped grooves 241 are arranged on the inner walls of the two sides of the limiting plate 24, and the ladder-shaped blocks 31 are arranged on the outer wall of the positioning plate 3 and correspond to the ladder-shaped grooves 241.

[0065] In the utility model, the ladder-shaped blocks 31 and the ladder-shaped grooves 241 are inserted and matched, the positioning plate 3 is stably moved up and down in the middle of the limiting plate 24, and then the objects of different sizes which need to be tested are clamped and matched, so that the stability of the objects is improved.

[0066] In use, the user first fixes the motor 5 on the fixed seat 1, then rotates the connecting rod 41 and the connecting seat 42, and inserts and matches the sliding column 421 on the top of the connecting seat 42 with the circular groove 120 on the convex block 12, and inserts and matches the arc-shaped block 422 with the insertion groove 210 on the positioning seat 21 on the bottom of the test rack plate 2, and inserts and matches the test rack plate 2 with the sliding hole 110 on the supporting plate 11 through the sliding rod 20, and then the threaded rod 23 is sequentially inserted into the connecting hole 22 and the through hole 212, and then is inserted out of the positioning hole 423, and the nut 230 is threadedly connected with the threaded rod 23, so that the sliding column 421 and the test rack plate 2 are combined and fixed, and then the positioning plate 3 is combined and fixed with the test rack plate 2 through the positioning lead screw 33.

[0067] When the object needs to be placed for vibration test, the object is placed between the positioning plate 3 and the test rack plate 2, the first rubber pad 240 and the second rubber pad 34 are matched to increase the friction force on the test object and reduce the damage caused by clamping, the positioning lead screw 33 is threadedly connected with the screw hole 244 on the first convex block 243 through the circular hole 320 on the second convex block 32, the positioning plate 3 and the test rack plate 2 are stably clamped, then the motor 5 is electrically connected with the external power supply through the wire, the control switch on the outer wall of the motor 5 is started, the output shaft is rotated to drive the crankshaft 40 to rotate, the test rack plate 2 is reciprocatingly moved above the supporting plate 11 under the cooperation of the connecting rod 41 and the connecting seat 42, and the edge of the test rack plate 2 is kept horizontally moved up and down under the cooperation of the sliding rod 20 and the spring 200, the test rack plate 2 is reciprocatingly moved up and down to simulate the up-and-down fluctuation of vibration, the object is tested, the positioning lead screw 33 is convenient to disassemble under the cooperation of the knob 330, the positioning plate 3 is taken out of the test rack plate 2, the internal object is convenient to replace, and the next object is tested.

Claims

1. A vibration test platform, comprising a fixed base (1), a plurality of columns (10) arranged above the fixed base (1), a support plate (11) arranged at the top of the columns (10), and a test frame plate (2) arranged above the support plate (11) and movable up and down, characterized in that: The upper surface of the fixed seat (1) is provided with a motor (5) near the right end, the upper surface of the support plate (11) is provided with a sliding hole (110) near the four corners, the upper surface of the support plate (11) is provided with a boss (12) in the middle, the boss (12) is provided with a circular groove (120) in the middle, the support plate (11) is provided with a linkage assembly (4) below, the linkage assembly (4) is provided with a crankshaft (40), a connecting rod (41) and a connecting seat (42) from bottom to top in turn, the crankshaft (40) is provided with a main shaft (400) at the center of both ends, the output shaft of the motor (5) is coaxially connected with the main shaft (400), the connecting rod (41) is provided with a sleeve ring (410) at both ends, the connecting seat (42) is provided with a rotating shaft (420) at the bottom, the connecting seat (42) is provided with a sliding column (421) at the top and the corresponding position, the sliding column (421) is provided with a positioning hole (423) at the top, the bottom of the test rack plate (2) is provided with a positioning seat (21) at the corresponding position of the sliding column (421), the bottom of the positioning seat (21) is provided with an insertion slot (210), the outer wall of the positioning seat (21) is provided with a through hole (212) at the corresponding position of the positioning hole (423), the through hole (212) is provided with a threaded rod (23), the top of the test rack plate (2) is provided with a limiting plate (24), the limiting plate (24) is provided with a positioning plate (3) which can move up and down in the middle.

2. The vibration test bed of claim 1, wherein: The width of the outer wall of the positioning plate (3) is matched with the width of the inner wall of the limiting plate (24), the inner wall of the limiting plate (24) is provided with a ladder type groove (241) at both sides, the outer wall of the positioning plate (3) is provided with a ladder type block (31) at the corresponding position of the ladder type groove (241).

3. The vibration test table of claim 2, wherein: The positioning plate (3) is provided with a plurality of air holes (30), the lower surface of the positioning plate (3) is provided with a second rubber pad (34), the upper surface of the test rack plate (2) is provided with a first rubber pad (240), the right end of the positioning plate (3) is further provided with a second protruding block (32), the second protruding block (32) is provided with a round opening (320), the round opening (320) is provided with a positioning screw rod (33), and the top of the positioning screw rod (33) is provided with a knob (330).

4. The vibration test table of claim 3, wherein: The right end of the limiting plate (24) is provided with an opening (242) at the corresponding position of the second protruding block (32), the right end of the limiting plate (24) is provided with a first protruding block (243) near the bottom, and the top of the first protruding block (243) is provided with a threaded hole (244).

5. The vibration test table of claim 1, wherein: The lower surface of the test rack plate (2) is provided with a sliding rod (20) at the corresponding position of the sliding hole (110), the outer wall of the sliding rod (20) is provided with a spring (200), and the inner diameter of the sliding rod (20) is matched with the inner diameter of the sliding hole (110).

6. The vibration test table of claim 1, wherein: The bottom of the stand column (10) is welded and fixed with the top of the fixed seat (1), the top of the stand column (10) is welded and fixed with the bottom of the support plate (11), and the boss (12) and the support plate (11) are an integral structure.

7. The vibration test table of claim 1, wherein: The crankshaft (40) is rotatably connected with two opposite columns (10) through a main shaft (400), the sleeve ring (410) and the connecting rod (41) are integrally formed, one sleeve ring (410) is rotatably connected with the crankshaft (40), the other sleeve ring (410) is rotatably connected with the rotating shaft (420) on the connecting base (42), and the bottom of the sliding column (421) is welded and fixed with the top of the connecting base (42).

8. The vibration test table of claim 1, wherein: The outer wall of the sliding column (421) is symmetrically provided with an arc block (422), the inner diameter of the circular groove (120) is matched with the outer diameter of the sliding column (421), the inner wall of the circular groove (120) is symmetrically provided with a first arc-shaped groove (121), the positioning seat (21) is welded and fixed with the test rack plate (2), the inner diameter of the insertion groove (210) is matched with the outer diameter of the sliding column (421), and the inner wall of the insertion groove (210) is symmetrically provided with a second arc-shaped groove (211).

9. The vibration test table of claim 8, wherein: The inner diameter of the through hole (212) is matched with the inner diameter of the positioning hole (423), the outer diameter of the threaded rod (23) is matched with the inner diameter of the positioning hole (423), the connecting hole (22) is formed in the outer wall of the test rack plate (2) corresponding to the threaded rod (23), and the threaded rod (23) is provided with a nut (230) at the end.

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