A vibration testing machine

Abstract

The present invention relates to the technical field of testing machines, and specifically to a vibration testing machine, comprising a vibration testing machine test product and a testing platform, wherein the test product is fixedly installed above the testing platform, and the testing platform is fixedly installed on a standard dynamometer, and the testing platform comprises a first platform and a second platform, wherein the first platform is located above the second platform, and a universal bracket is commonly installed between the first platform and the second platform. In the present invention, a fastening groove is provided in a triangular shape, and its groove width increases gradually, thereby being able to accommodate the entry of locking bolts of various sizes and fitting and locking therewith, thereby meeting the requirements for the change in the morphology of the base mounting holes of testing machines of different models. In addition, two sets of anti-slip teeth are arranged on the side walls of the fastening groove, and the locking bolts obtain anti-slip and anti-rotation capabilities after entering through the change in their convex amplitude, thereby improving the placement stability of the testing machine to be inspected, and further improving the accuracy of subsequent test data.

Description

Technical Field

[0001] The invention relates to the technical field of testing machines, in particular to a vibration testing machine. Background Art

[0002] The purpose of vibration testing is to conduct a series of controlled vibration simulations in the experiment to test whether the product can withstand the test of transportation or vibration environment factors during its life cycle, and to determine the requirements of product design and function. Vibration simulation also has different methods according to different purposes, such as resonance search, resonance dwell, cyclic scanning, random vibration and stress screening.

[0003] According to the type and purpose of the testing machine, select the appropriate calibration method and use the standard dynamometer for test calibration. Common calibration methods include direct comparison method and weight method. The direct comparison method is to compare the testing machine to be calibrated with a standard testing machine of known accuracy; the weight method is to adjust the energy of the pendulum by adding or removing weights of known mass from the pendulum.

[0004] In the pendulum weight calibration work of the testing machine, due to the different sizes and styles of the bases of the testing machines submitted for inspection, the original style of the pendulum weight bracket tripod cannot be placed in the appropriate position to make the center of the pendulum blade of the testing machine coaxial with the standard dynamometer. The type of testing machine is single and the range of test error is large. Summary of the invention

[0005] In order to address the deficiencies of the prior art, the present invention provides a vibration testing machine, thereby solving the problem that traditional testing machine calibration equipment is difficult to provide a detachable, multi-angle supporting bracket with a universal leveling function to meet the needs of testing machines with different installation methods.

[0006] The technical solution adopted by the present invention to solve its technical problem is a vibration testing machine, including a vibration testing machine test product and a test platform, the test product is fixedly installed above the test platform, the test platform is fixedly installed on a standard dynamometer, the test platform includes a first platform and a second platform, the first platform is located above the second platform, and a universal bracket is installed between the first platform and the second platform.

[0007] Preferably, a plurality of slide rails are radially installed on the upper part of the first platform, a receiving platform is installed on the slide rails by means of sliding fit, a plurality of hydraulic buffers are installed on the middle part of the first platform by means of sliding fit, the test product is installed on the receiving platform, and the telescopic end head of the buffer abuts against the middle part of the bottom surface of the test product.

[0008] Preferably, the receiving platform includes a slider and an angle plate, the slider is slidably mounted on the slide rail, the angle plate is mounted on the slider by rotational cooperation, a receiving plate is slidably mounted on the upper part of the angle plate, mounting holes are provided at the corners around the base of the test product, locking bolts are installed in the mounting holes, and the bottom of the locking bolts passes through the receiving plate.

[0009] Preferably, one end of the receiving plate slides against the upper end surface of the first platform, and the other end of the receiving plate is slidably mounted with a fastening plate, and both the fastening plate and the receiving plate are provided with fastening grooves, and the two fastening grooves are sequentially penetrated from top to bottom.

[0010] Preferably, the fastening groove is a triangular groove, and the fastening groove on the fastening plate and the fastening groove on the receiving plate are oriented in opposite directions. Two groups of anti-slip teeth with different diameters are arranged on the side walls of the fastening groove, and the two groups of anti-slip teeth are staggered up and down.

[0011] Preferably, a pair of push-pull bolts are coupled and installed between the end of the receiving plate and the end of the fastening plate, and rollers are rotatably installed on the upper end surfaces of the fastening plate and the receiving plate, and the bottom surface of the test product rests on the rollers.

[0012] Preferably, a fastening buckle is fixedly installed on one end of the angle disk away from the fastening plate, and the middle part of the receiving plate slides through the fastening buckle. A planar groove is provided in the middle part of the angle disk, and a locking clip is slidably installed in the planar groove. One side of the locking clip is connected to the side wall of the planar groove through a compression spring, and a convex tooth is provided on the other side of the locking clip. The side wall of the receiving plate is provided with a tooth groove engaged with the convex tooth.

[0013] Preferably, a plurality of levels are circumferentially mounted on the upper end surface of the first platform, and the levels and the angle disks are arranged at intervals.

[0014] Preferably, the universal bracket is a double-link structure with two sections hinged to each other, the upper part of the double-link is a sphere, and the sphere is rotatably installed on the bottom surface of the first platform, the upper end surface of the second platform is rotatably installed with a steering seat, and the lower part of the double-link is hingedly installed on the steering seat, the upper end surface of the second platform is fixedly provided with a gear ring, the bottom of the steering seat is hingedly installed with a buckle, and the bottom surface of the buckle is meshed with the gear ring.

[0015] Preferably, the upper link of the double-link structure is fixedly installed with an angle ring, on which an angle scale is engraved, and the angle ring rotates with the axis of the hinge part of the double-link structure as the center of rotation. The lower part of the angle ring slides through the lower link of the double-link structure, and an angle spring is sleeved on the angle ring located within the angle range of the double-link structure, and a tightening bolt is installed at the lower link position of the double-link structure by threaded cooperation, and the end of the tightening bolt abuts against the side wall of the angle ring.

[0016] Beneficial effects of the present invention:

[0017] (1) In the present invention, a detachable support fixture capable of supporting at multiple angles and having a universal leveling function is provided. Through the transitional installation method of the test platform, the test installation conditions of the test machine to be tested are kept uniform, which is beneficial to the standardized measurement process of the standard dynamometer.

[0018] (2) In the present invention, the width of the triangular fastening groove increases gradually, so that it can accommodate the entry of locking bolts of various sizes and fit and lock with them, meeting the requirements of the changing shape of the base installation hole positions of different types of test machines. In addition, the two sets of anti-slip teeth arranged on the side walls of the fastening groove have anti-slip and anti-rotation capabilities after the locking bolt enters the groove through the change of their convex amplitude, thereby improving the placement stability of the test machine to be inspected and further improving the accuracy of subsequent test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the overall connection structure of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the main view;

[0022] Figure 3 for Figure 2 A is an enlarged schematic diagram;

[0023] Figure 4 Schematic diagram of the positional relationship between the first platform and the second platform in the present invention;

[0024] Figure 5 for Figure 4 The enlarged schematic diagram of point B in FIG.

[0025] Figure 6 for Figure 4 The enlarged schematic diagram of point C in FIG.

[0026] Figure 7 It is a schematic diagram of the positional relationship between the angle plate and the level meter in the present invention;

[0027] Figure 8 It is a schematic diagram of the positional relationship between the receiving plate and the angle plate in the present invention;

[0028] Fig. 9 It is a schematic diagram of the positional relationship between the receiving plate and the fastening plate in the present invention;

[0029] Fig.10 for Fig. 9 The enlarged schematic diagram of D in FIG.

[0030] Fig.11 for Fig. 9 The enlarged schematic diagram of point E in FIG.

[0031] In the figure: 1. test product; 2. test platform; 3. first platform; 4. second platform; 31. slide rail; 32. buffer; 5. universal bracket; 6. receiving platform; 61. slider; 7. angle plate; 11. locking bolt; 8. receiving plate; 81. fastening plate; 82. fastening groove; 83. anti-skid teeth; 84. push-pull bolt; 85. roller; 71. fastening buckle; 72. plane groove; 73. locking clip; 74. compression spring; 86. tooth groove; 33. spirit level; 51. double connecting rod; 52. sphere; 41. steering seat; 42. gear ring; 43. buckling ring; 53. angle ring; 54. angle spring; 55. tightening bolt. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figures 1 to 4 As shown, a preferred embodiment of the present invention provides a vibration testing machine, including a vibration testing machine test product 1 and a test platform 2, wherein the test product 1 is fixedly installed above the test platform 2, and the test platform 2 is fixedly installed on a standard dynamometer, and the test platform 2 includes a first platform 3 and a second platform 4, wherein the first platform 3 is located above the second platform 4, and a universal bracket 5 is installed between the first platform 3 and the second platform 4.

[0034] In the pendulum weight calibration work of the testing machine, the transitional installation mode of the test platform 2 is used to keep the test installation conditions of the testing machine to be tested uniform, which is beneficial to the standardized measurement process of the standard dynamometer.

[0035] Further, such as Figure 2 , Figure 4 and Figure 7 As shown, a plurality of slide rails 31 are radially installed on the upper part of the first platform 3, and a receiving platform 6 is installed on the slide rails 31 by means of sliding fit. A plurality of hydraulic buffers 32 are installed in the middle part of the first platform 3 by means of sliding fit. The test product 1 is installed on the receiving platform 6, and the telescopic end head of the buffer 32 abuts against the middle part of the bottom surface of the test product 1.

[0036] During the placement of the testing machine, the buffer 32 enables the testing machine to be lowered smoothly through its internal hydraulic buffering capacity, while reducing the additional support force provided by the operator during the position adjustment process, reducing the difficulty of operation, and thus improving the accuracy of the positioning process.

[0037] Furthermore, for different types of testing machines, the base size and installation hole positions are different. In order to ensure that the placement of the testing machine to be tested is accurate and stable, such as Figure 2 ,as well as Figures 8 to 10 As shown, the receiving platform 6 includes a slider 61 and an angle plate 7. The slider 61 is slidably installed on the slide rail 31. The angle plate 7 is installed on the slider 61 by rotational cooperation. A receiving plate 8 is slidably installed on the upper part of the angle plate 7. Mounting holes are provided at the corners around the base of the test product 1. Locking bolts 11 are installed in the mounting holes, and the bottom of the locking bolts 11 passes through the receiving plate 8. One end of the receiving plate 8 slides against the upper end surface of the first platform 3, and a fastening plate 81 is slidably installed on the other end of the receiving plate 8. Fastening grooves 82 are provided on the fastening plate 81 and the receiving plate 8, and two fastening grooves 82 are sequentially penetrated from top to bottom. The fastening groove 82 is a triangular notch, and the fastening groove 82 on the fastening plate 81 and the fastening groove 82 on the receiving plate 8 face in opposite directions. The side walls of the fastening groove 82 are spaced apart by two groups of anti-slip teeth 83 with different diameters, and the two groups of anti-slip teeth 83 are arranged in an up-and-down staggered manner.

[0038] During operation, accompanied by the receiving action of the buffer 32, the test product 1 to be inspected slowly descends to the upper position of the receiving platform 6. At this time, the base of the test product 1 contacts the upper end surface of the receiving plate 8 and obtains stable support. Subsequently, the angle plate 7 is pushed to move. Through the sliding cooperation between the slider 61 and the slide rail 31, the angle plate 7 can move freely from the center to the edge position on the upper part of the first platform 3. Along with the movement of the angle plate 7, it drives the receiving plate 8 to move synchronously. At the same time, through the push-pull action, the relative position between the receiving plate 8 and the angle plate 7 can also be adjusted, so that the fastening groove 82 reaches the position just below the locking bolt 11 on the test product 1. Subsequently, the locking bolt 11 is inserted downward. Insert, so that it passes through the two fastening grooves 82 in sequence. In this process, the side wall of the locking bolt 11 is fitted with the side wall of the fastening groove 82 located at the bottom of the end of the receiving plate 8. When the locking bolts 11 on all sides are inserted, the position of the test product 1 is relatively fixed. The width of the triangular fastening groove 82 increases gradually, thereby accommodating the entry of locking bolts 11 of various sizes and fitting and locking with them, meeting the requirements of the changing shape of the installation hole position of different models of test products 1. In addition, the two sets of anti-slip teeth 83 arranged on the side wall of the fastening groove 82 have the anti-slip and anti-rotation capabilities after the locking bolt 11 enters through the change of its convex amplitude, thereby improving the placement stability of the test product 1.

[0039] Furthermore, in order to improve the installation speed of the test product 1 and enhance the anti-impact capability during the subsequent testing process, as Figures 8 to 10As shown, a pair of push-pull bolts 84 are coupled and installed between the end of the receiving plate 8 and the end of the fastening plate 81, and rollers 85 are rotatably installed on the upper end surfaces of the fastening plate 81 and the receiving plate 8. The bottom surface of the test product 1 rests on the roller 85. A fastening buckle 71 is fixedly installed on the end of the angle disk 7 away from the fastening plate 81, and the middle part of the receiving plate 8 slides through the fastening buckle 71. A plane groove 72 is provided in the middle part of the angle disk 7, and a locking clip 73 is slidably installed in the plane groove 72. One side of the locking clip 73 is connected to the side wall of the plane groove 72 through a compression spring 74, and the other side of the locking clip 73 is provided with a convex tooth, and the side wall of the receiving plate 8 is provided with a tooth groove 86 engaged with the convex tooth.

[0040] During operation, after the locking bolt 11 passes through the fastening groove 82, it is coupled to the push-pull bolt 84 installed on the receiving plate 8, one of the push-pull bolts 84 is connected to the receiving plate 8 by means of threaded fit, and its end abuts against the side wall of the fastening plate 81, and the other push-pull bolt 84 is connected to the receiving plate 8 by means of rotational fit, and its end is connected to the side wall of the fastening plate 81 by means of threaded fit. By adjusting the rotational relationship of the two push-pull bolts 84 respectively, the relative position between the fastening plate 81 and the receiving plate 8 can be indirectly adjusted, thereby The interlaced range between the upper and lower fastening grooves 82 is adjusted, and the locking bolt 11 is clamped in the center from both sides thereof through two "V"-shaped interlaced openings. In addition, the push-pull bolt 84 can be locked by itself after the rotation is completed, thereby locking the size and position of the fastening groove 82. The roller 85 arranged on the upper end surface of the fastening plate 81 and the receiving plate 8 can provide stable support for the bottom of the test product 1 while reducing the friction resistance encountered during the position adjustment process, which is beneficial to the operator's refined position adjustment action and makes the positioning more accurate.

[0041] Furthermore, in order to reduce the detection error of the test machine to be tested, the coaxiality between the center of the pendulum blade of the test machine and the standard dynamometer is improved, such as Figures 2 to 7As shown, the universal bracket 5 is a double-link structure 51 with two sections hinged to each other. The upper part of the double-link 51 is a sphere 52, and the sphere 52 is rotatably mounted on the bottom surface of the first platform 3. The upper end surface of the second platform 4 is rotatably mounted with a steering seat 41, and the lower part of the double-link 51 is hingedly mounted on the steering seat 41. The upper end surface of the second platform 4 is fixedly provided with a gear ring 42, and the bottom of the steering seat 41 is hingedly mounted with a buckle 43, and the bottom surface of the buckle 43 is meshed with the gear ring 42. The upper link of the double-link structure is fixedly mounted with an angle ring 53, and the angle ring 5 3 is engraved with an angle ruler, the angle ring 53 rotates around the axis of the hinged part of the double link 51, the lower part of the angle ring 53 slides through the lower link of the double link 51 structure, an angle spring 54 is sleeved on the angle ring 53 located within the angle range of the double link 51 structure, and a tightening bolt 55 is installed at the lower link position of the double link 51 structure by threaded engagement, the end of the tightening bolt 55 abuts against the side wall of the angle ring 53, a plurality of levels 33 are circumferentially installed on the upper end surface of the first platform 3, and the levels 33 are arranged at intervals from the angle disk 7.

[0042] During operation, after the position of the test product 1 is placed and locked, according to the detection orientation of the standard dynamometer, the tightening bolt 55 is loosened to contact the tightening state of the angle ring 53 at its end, so that the middle hinge position of the double connecting rod 51 is in a free rotation state, and then the angle of the double connecting rod 51 is adjusted, thereby adjusting the spacing distance between the first platform 3 and the second platform 4 at this position. In the process of adjusting the angle of the double connecting rod 51, the hinge part of the double connecting rod 51 can be moved to the outer position of the first platform 3 by rotating the steering seat 41, so as to facilitate the visual observation needs of the operator. The angle spring 54 provided can provide auxiliary support effect during the height adjustment of the operator, thereby reducing The operation difficulty is low. During the position adjustment process, the orientation and angle of the first platform 3 can be directly observed by the level 33. After the position adjustment is completed, the tightening bolt 55 is tightened to fix the relative position between the first platform 3 and the second platform 4, thereby fixing the placement position of the test product 1. Subsequently, the vibration tester test product 1 is started to work, and the impact force of the pendulum when it falls is measured and recorded by the existing standard dynamometer. The experimental process can be carried out by direct comparison method or weight method, by comparing the test machine to be calibrated with a standard test machine of known accuracy, or by adding or removing weights of known mass from the pendulum to adjust the energy of the pendulum, so as to actually determine the impact value of the test machine to be tested.

[0043] In addition, the present invention also provides a method for using the vibration testing machine, comprising the following steps:

[0044] S1. Installation and positioning: first, install the test platform 2 on the existing standard dynamometer, and then place the vibration tester test object 1 to be tested on the test platform 2;

[0045] S2, horizontal adjustment: according to the base size of the vibration tester test product 1 and the actual installation hole position, adjust the actual position of the receiving platform 6 on the slide rail 31 to achieve the lifting and locking of the base of the vibration tester test product 1 around, and then adjust the height position of the universal bracket 5 to keep the vibration tester test product 1 horizontally centered and reach the corresponding test height synchronously;

[0046] S3. Force measurement analysis: Start the vibration testing machine test product 1 to work, and measure and record the impact force of the pendulum when it falls through the existing standard force gauge. The experimental process can be carried out through direct comparison method or weight method, by comparing the test machine to be calibrated with a standard test machine of known accuracy, or by adding or removing weights of known mass from the pendulum to adjust the energy of the pendulum, to actually determine the impact value of the test machine to be tested.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A vibration testing machine, comprising a vibration testing machine test piece (1) and a test platform (2), wherein the test piece (1) is fixedly mounted above the test platform (2), and the test platform (2) is fixedly mounted on a standard dynamometer, characterized in that: The test platform (2) comprises a first platform (3) and a second platform (4), the first platform (3) being located above the second platform (4), and a universal bracket (5) being installed between the first platform (3) and the second platform (4); The upper part of the first platform (3) is radially and circumferentially mounted with a plurality of slide rails (31), a receiving platform (6) is mounted on the slide rails (31) by means of a sliding fit, a plurality of hydraulic buffers (32) are mounted on the middle part of the first platform (3) by means of a sliding fit, the test object (1) is mounted on the receiving platform (6), and the telescopic end portion of the buffer (32) abuts against the middle part of the bottom surface of the test object (1); The receiving platform (6) comprises a slider (61) and an angle plate (7), the slider (61) is slidably mounted on the slide rail (31), the angle plate (7) is mounted on the slider (61) by means of rotational fit, a receiving plate (8) is slidably mounted on the upper part of the angle plate (7), mounting holes are provided at the corner positions around the base of the test product (1), locking bolts (11) are installed in the mounting holes, and the bottom of the locking bolts (11) passes through the receiving plate (8); One end of the receiving plate (8) slides against the upper end surface of the first platform (3), and the other end of the receiving plate (8) is slidably mounted with a fastening plate (81), and both the fastening plate (81) and the receiving plate (8) are provided with fastening grooves (82), and the two fastening grooves (82) are sequentially penetrated from top to bottom; The fastening groove (82) is a triangular notch, and the fastening groove (82) located on the fastening plate (81) and the fastening groove (82) located on the receiving plate (8) have their tips facing in opposite directions. Two groups of anti-slip teeth (83) of different diameters are arranged at intervals on the side walls of the fastening groove (82), and the two groups of anti-slip teeth (83) are arranged in an up-and-down staggered manner.

2. The vibration testing machine according to claim 1, characterized in that: A pair of push-pull bolts (84) are coupled and installed between the end of the receiving plate (8) and the end of the fastening plate (81), and rollers (85) are rotatably installed on the upper end surfaces of the fastening plate (81) and the receiving plate (8), and the bottom surface of the test object (1) rests on the rollers (85).

3. The vibration testing machine according to claim 2, characterized in that: A fastening buckle (71) is fixedly mounted on one end of the angle disc (7) away from the fastening plate (81), and the middle part of the receiving plate (8) slides through the fastening buckle (71). A plane groove (72) is provided in the middle part of the angle disc (7), and a locking clip (73) is slidably mounted in the plane groove (72). One side of the locking clip (73) is connected to the side wall of the plane groove (72) through a compression spring (74), and the other side of the locking clip (73) is provided with a convex tooth. The side wall of the receiving plate (8) is provided with a tooth groove (86) engaged with the convex tooth.

4. The vibration testing machine according to claim 1, characterized in that: A plurality of levels (33) are circumferentially mounted on the upper end surface of the first platform (3), and the levels (33) and the angle discs (7) are arranged at intervals.

5. The vibration testing machine according to claim 1, characterized in that: The universal bracket (5) is a double-link (51) structure having two sections hinged to each other. The upper portion of the double-link (51) is a sphere (52), and the sphere (52) is rotatably mounted on the bottom surface of the first platform (3). A steering seat (41) is rotatably mounted on the upper end surface of the second platform (4), and the lower portion of the double-link (51) is hingedly mounted on the steering seat (41). A gear ring (42) is fixedly arranged on the upper end surface of the second platform (4), and a buckle ring (43) is hingedly mounted on the bottom of the steering seat (41), and the bottom surface of the buckle ring (43) is meshed with the gear ring (42).

6. The vibration testing machine according to claim 5, characterized in that: The upper connecting rod of the double connecting rod (51) structure is fixedly mounted with an angle ring (53), and an angle scale is engraved on the angle ring (53). The angle ring (53) rotates around the axis of the hinged part of the double connecting rod (51). The lower part of the angle ring (53) slides through the lower connecting rod of the double connecting rod (51) structure. An angle spring (54) is sleeved on the angle ring (53) located within the angle range of the double connecting rod (51) structure. A tightening bolt (55) is installed at the lower connecting rod position of the double connecting rod (51) structure by means of threaded engagement, and the end of the tightening bolt (55) abuts against the side wall of the angle ring (53).

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