A vibration table with an adjustable clamping component

Abstract

The present invention provides a vibration table with an adjustable clamping assembly, which relates to a vibration table structure, including multiple groups of annular adjusting slide rails which are installed on the vibration table surface, the adjusting slide rails are arranged with an inner gear ring, a matching outer gear is installed on the vibration table surface, multiple groups of plug-in holes are evenly arranged along the circumferential direction on the outer gear, and a matching through groove is correspondingly arranged on the vibration table surface; multiple groups of bases are also arranged on the vibration table surface, the bases and the multiple groups of adjusting slide rails are slidingly installed, and the locking holes are used to insert limit rods to lock the bases and the corresponding adjusting slide rails, a mounting base is slidingly installed on the base, a spur rack is arranged on one side of the mounting base, and a corresponding spur gear is arranged on one side of the base, multiple groups of plug-in holes are evenly arranged along the circumferential direction on the spur gear, and a matching through groove is correspondingly arranged on the extension block. The present invention not only has the adaptability and precise clamping and positioning for test pieces of various shapes, but also has good stability during vibration, and can also be quickly replaced and maintained.

Description

Technical Field

[0001] The present invention relates to a vibration table structure, in particular to a vibration table with an adjustable clamping assembly. Background Art

[0002] Vibration tables are widely used to simulate the vibration environment required by products or materials to evaluate their vibration resistance. The clamping assembly is a device installed on the vibration table to fix the test piece to ensure that the test piece does not shift or fall off during vibration. For the design of the clamping assembly, it is required to be strong enough to avoid additional vibration or deformation in the vibration environment, which may affect the test results. At the same time, the mass of the clamping assembly should also be avoided to be too large to avoid changing the dynamic characteristics of the entire system, such as changing the resonance frequency. In addition, the geometric shape and size of the test piece will also affect the position selection of the clamping assembly. For example, for a long strip-shaped test piece, the clamping assembly may need to clamp both ends, while for an irregularly shaped test piece, multiple clamping points may be required to evenly distribute the stress and avoid damage to the test piece caused by local stress concentration. At the same time, for the position of the clamping assembly on the vibration table, it should be installed as close as possible to the central area of the tabletop (usually within the range of 30%-70% of the tabletop diameter) to obtain uniform vibration input. In the prior art, in order to meet the above requirements as much as possible, when testing a certain test piece, a corresponding clamping assembly needs to be designed and installed at the corresponding position on the vibration table. Since the mounting holes on the vibration table are generally determined and formed after production, when aligning the mounting holes of the clamping assembly with the mounting holes on the vibration table, it is inevitable that there will be a clearance error in the clamping of the test piece, and sometimes the clearance will be as large as nearly the distance between two screw mounting holes. At this time, it is difficult for the clamping assembly to effectively position the test piece. Therefore, it is necessary to modify the structure of the clamping assembly or add a structure to assist in filling the gap to eliminate the gap between the test piece and the clamping assembly, which is time-consuming and laborious. At the same time, the flexibility of the vibration table and the clamping assembly is also poor, and the production cost of the test is also greatly increased.

[0003] In the prior art, for example, a patent for a vibration table fixture that can be precisely adjusted (Announcement No. CN102156034B) has a certain adjustable effect. Specifically, a base with an adjustable distance from the center is designed, and a matrix-type mounting hole is arranged on the base. The test piece is fixed by aligning the mounting holes. However, since the base can only make a straight reciprocating motion along the rotating screw, there is an installation blank area between the two groups of bases and between the two rows of mounting holes on one group of bases that are parallel to the rotating screw. If the test piece is centered and the alignment holes happen to be aligned to this installation blank area, the test piece will be easily damaged. If the test piece is not in the same area, the alignment of the alignment hole and the mounting hole cannot be achieved. Forced alignment requires the use of specially designed auxiliary limiters, which are designed and processed in real time according to the mounting position, and also require the use of a rigid material of a certain thickness. The rigid material is used to limit the interval between the test piece and the base, and the alignment hole for alignment with the mounting hole is redesigned. However, this design is only applicable to the processing of this group of test pieces. If the size of the test piece changes, or the position changes, or there is an error in the precision of the size during processing, it will also affect the stability of the test piece positioning, and thus affect the test effect;

[0004] Moreover, in the above-mentioned patent, the base is driven by a screw to perform linear reciprocating motion. It is known that the diameter of the screw is relatively small. For example, for a long strip specimen that only needs to be positioned at both ends, after fixing the two ends of the specimen on two opposite sets of bases, once the screw rotates slightly during vibration, the specimen is likely to shift. This is because the screw has a relatively small diameter, so even if the rotation angle is small, a large displacement and shaking effect will occur. In addition, there is no locking structure in the patent after the screw is rotated into place. If the rotation is locked by a motor, the motor installed on the vibration table is very likely to be damaged during the vibration test. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a vibration table with an adjustable clamping assembly, which not only has the adaptability and precise clamping and positioning for test pieces of various shapes, but also has good stability during vibration, and can also be quickly replaced and maintained, with low test and maintenance costs.

[0006] The present invention provides the following technical solutions:

[0007] A vibration table with an adjustable clamping assembly, comprising a vibration table surface and a plurality of groups of adjusting slide rails which are installed on the vibration table surface and are in an annular shape, wherein the annular center of the adjusting slide rails and the vibration center of the vibration table surface are concentrically distributed, and an inner ring of gears is arranged on the inner side of each group of adjusting slide rails, and an outer gear which is used for meshing and driving with the inner ring of gears in a one-to-one correspondence is installed on the vibration table surface, and a plurality of groups of plug holes are evenly arranged on the outer gear along the circumferential direction, and a through groove which is used for one-to-one matching with the plug holes is correspondingly provided on the vibration table surface;

[0008] A plurality of base platforms are further arranged on the vibration tabletop. The base platforms are arranged across the inner and outer sides of a plurality of adjustment slide rails and are slidably installed with the plurality of adjustment slide rails. A pair of locking holes corresponding to both sides of a group of base platforms are arranged on each group of adjustment slide rails. A limiting rod is inserted into the locking holes to lock the base platform and the corresponding adjustment slide rail. The locking holes, the base platforms and the adjustment slide rails are arranged in one-to-one correspondence. An installation bottom plate is slidably installed on the base platform along the radial direction of the adjustment slide rail. A plurality of installation holes are arranged on the installation bottom plate in an array. The test piece is placed on the installation bottom plate and is installed and fixed by aligning with the installation holes. A group of straight racks are further arranged on one side of the installation bottom plate. At least one group of extension blocks are arranged on one side of each group of base platforms. A straight gear meshing with the corresponding straight rack is installed on a group of extension blocks. A plurality of second insertion holes are evenly arranged on the straight gear along the circumferential direction. A second through groove corresponding to the second insertion holes for alignment and cooperation is arranged on the extension block.

[0009] So far, first, the corresponding base platform can be transferred and slid along the adjustment slide rail to the middle of the corresponding pair of locking holes, and the limiting rod is inserted into the locking holes to limit both sides of the base platform, so as to realize the position locking of the base platform and the corresponding adjustment slide rail. Then, according to the shape of the test piece to be tested, the adjustment slide rail is rotated around the center, so that each group of base platforms rotates to the corresponding support position suitable for the shape of the test piece. Then, the installation bottom plate is slid and adjusted along the radial direction, so that a hole position in the array of installation holes on the installation bottom plate is aligned with the installation hole position of the test piece. Then, the test piece is installed and positioned on the installation bottom plate by inserting and connecting bolts or guide posts. After the adjustment slide rail rotates in place, the adjustment slide rail is locked by inserting and connecting the first insertion hole and the first through groove with bolts or guide posts. After the installation bottom plate slides in place, the installation bottom plate is locked by inserting and connecting the second insertion hole and the second through groove with bolts or guide posts. When the adjustment slide rail and the installation bottom plate are locked, there is no need to externally connect an electric locking device to avoid being damaged during vibration. Instead, bolts or guide posts are simply used for locking, which is relatively simple and convenient, and the stability is also good. At the same time, in the device of the present invention, the circumferential position adjustment of the base platform driven by the external gear is achieved through a relatively large-diameter internal gear ring. That is, when the external gear rotates n circles with a relatively large number of rotations, the internal gear ring will drive the base platform to move a small arc length in the circumferential direction. That is, when the external gear ring rotates one circle, only a small displacement of the base platform can be changed through the transition of the internal gear ring. Therefore, when the installation holes on the installation bottom plate are aligned with the installation hole positions of the test piece, such as the first insertion hole and the first through groove, and the second insertion hole and the second through groove have a little alignment error, even if forced rotation adjustment is carried out, the displacement change of the test piece installation position can be ignored. At this time, it can be equivalent to: when aligning and installing, without the need to rely on subsequent other design modifications, the first insertion hole and the first through groove, and the second insertion hole and the second through groove can always achieve the purpose of alignment.

[0010] Preferably, the adjusting slide rail includes a long arc segment and a short arc segment which are connected to form a ring. The long arc segment is installed on the vibration table by transfer, and the short arc segment is installed on the vibration table by sliding. The long arc segment and the short arc segment are detachably connected. Therefore, when the base needs to be removed from the adjusting slide rail, it is only necessary to first separate the short arc segment and the long arc segment, and then take the short arc segment out of the vibration table. At this point, an annular gap can be formed, and then the base can be slid along the adjusting slide rail. When it slides to the gap position, the base can be taken out from the vibration table.

[0011] Preferably, the base is a gantry structure, which is arranged on the top surface of the adjusting slide rail and is provided with a notch with an inverted T-shaped cross-section. The tops of the long arc segment and the short arc segment have an arc segment upper part with a T-shaped cross-section, and the arc segment upper part fits in the notch. The middle parts of the long arc segment and the short arc segment are also provided with a group of horizontal arc segment middle parts, and the arc segment middle parts are supported on the top surface of the adjusting slide rail to improve the stability of the base. The vibration table is also provided with an annular slide groove with an inverted T-shaped cross-section, and the bottom of the long arc segment is provided with an arc segment lower part with an inverted T-shaped cross-section that fits in the annular slide groove, and the bottom of the short arc segment is provided with a cylindrical stop block vertically placed in the annular slide groove. At this point, the long arc segment can always be limited to rotate in the annular slide groove, and the short arc segment can be taken out of the annular slide groove after being disassembled from the long arc segment, and the whole composed of the long arc segment and the short arc segment is always limited to the vibration table surface.

[0012] Preferably, the short arc segment is an arc length corresponding to a central angle of 90°, and a rectangular groove 1 is provided at both ends of the short arc segment that are connected to the long arc segment, and a rectangular groove 2 that is connected to the rectangular groove 1 is provided at the end of the long arc segment, and a top pressure spring is connected in the rectangular groove 1, and the end of the top pressure spring is top-pressure-connected with an L-shaped block, and sliding blocks are provided on both sides of the vertical end of the L-shaped block, and its horizontal end extends into the rectangular groove 2, and a sliding card slot that is slidably connected to the outside of the sliding card block is provided in the rectangular groove 1. When the L-shaped card block is driven by the top pressure spring, The lower horizontal end of the L-shaped block extends into the second rectangular groove, and the vertical section of the L-shaped block is still clamped in the first rectangular groove. At this time, the short arc segment and the long arc segment can be clamped and connected. When disassembly is required, it is only necessary to push the vertical end of the L-shaped block to compress the top pressure spring and pull it out of the second rectangular groove. At this time, the short arc segment can be pulled upward to remove it from the vibration table. In order to ensure a smooth transition of the base between the long arc segment and the short arc segment, the vertical end of the L-shaped block can be set flush with the top surface of the long arc segment and the short arc segment.

[0013] Preferably, after the horizontal end of the L-shaped clamp is extended into the rectangular groove two, it is clamped and limited on the top surface by the sealing plate in the rectangular groove two. When the horizontal end of the L-shaped clamp is driven by the top pressure spring and extends into the rectangular groove two and is limited by the sealing plate, it can prevent the short arc segment from jumping out of the docking end relative to the long arc segment when the vibration table vibrates.

[0014] Preferably, the mounting hole of the mounting base plate is a countersunk hole, and a rubber pad is adhered to the inner hole surface of the countersunk hole, and the diameter of the countersunk hole end close to the base side is larger than the diameter of the countersunk hole end away from the base side. At this point, after the mounting hole on the mounting base plate and the specimen mounting position hole position are aligned, the selected group of countersunk holes can be marked, and then the mounting base plate is removed from the base, and the corresponding bolts or guide columns are used to extend into the countersunk holes, and the large end of the bolt or guide column is placed at the countersunk hole end close to the base side, and then the mounting base plate is installed on the base, and the specimen is aligned with the bolt or guide column and connected. The role of this rubber pad is to adapt to the error fine-tuning that occurs when the plug-in hole one and the through-slot one, as well as the plug-in hole two and the through-slot two are aligned. That is, when the alignment is realized, if the plug-in hole one and the through-slot one, as well as the plug-in hole two and the through-slot two have misalignment errors, it is only necessary to compress the thickness of the rubber pad to complete the adaptation adjustment, the adjustment gap is relatively small, and the adjustment is also relatively convenient.

[0015] Preferably, the size of the mounting base plate is larger than that of the base, and the top end of the limit rod extends out from the locking hole to be flush with the bottom of the mounting base plate. Therefore, when the mounting base plate slides to an appropriate range of the base, the locking hole can be completely covered. At this time, if a limit rod is inserted into the locking hole, the top end of the limit rod can be crimped by the mounting base plate after being blocked on both sides of the base, thereby further preventing the limit rod from falling out of the locking hole during vibration, thereby greatly improving the stability of the locking.

[0016] Preferably, the base and the adjustment slide rails are each provided with four groups, and the locking holes are provided with four corresponding pairs.

[0017] Preferably, the first plug-in hole and the first through-slot as well as the second plug-in hole and the second through-slot are all arranged perpendicular to the vibration table surface.

[0018] The beneficial effects of the present invention are as follows: A vibrating table with an adjustable clamping assembly provided by the present invention not only has precise clamping and positioning adaptability for test pieces of various shapes, but also has good stability during vibration. At the same time, it can be quickly replaced and maintained, and both the test cost and the maintenance cost are relatively low. The specific operation is as follows: First, the corresponding base can be transferred and slid along the adjustment slide rail to the middle of the corresponding pair of locking holes, and the limiting rod is inserted into the locking holes to limit both sides of the base, so as to lock the position of the base corresponding to the adjustment slide rail. Then, according to the shape of the test piece to be tested, the adjustment slide rail is rotated around the center, so that each group of bases is rotated to the corresponding support position adapted to the outer shape of the test piece. Then, the mounting base plate is slid radially adjusted, so that one of the mounting holes in the array distribution of the mounting base plate is aligned with the mounting position hole of the test piece. Then, it is connected by inserting bolts or guide posts to complete the installation and positioning of the test piece on the mounting base plate. After the adjustment slide rail rotates in place, the adjustment slide rail is locked by inserting bolts or guide posts into the corresponding connection holes 1 and slots 1. After the mounting base plate slides in place, the mounting base plate is locked by inserting bolts or guide posts into the corresponding connection holes 2 and slots 2. When locking the adjustment slide rail and the mounting base plate, there is no need to externally connect an electric locking device to avoid being damaged during vibration. Instead, simple bolts or guide posts are used for locking, which is relatively simple and convenient, and the stability is also good. At the same time, in the device of the present invention, the circumferential position adjustment of the base driven by the external gear is carried out through a larger-diameter internal gear ring. That is, when the external gear rotates n more turns, the internal gear ring will only drive the base to move a small arc length in the circumferential direction. That is, when the external gear rotates one turn, only a small displacement of the base can be changed through the transition of the internal gear ring. Therefore, when the mounting holes on the mounting base plate are aligned with the mounting position holes of the test piece, such as a little alignment error between the connection holes 1 and slots 1 and the connection holes 2 and slots 2, even if forced to rotate and adjust, the displacement change of the test piece mounting position can be ignored. At this time, it can be equivalently considered that: during alignment installation, without the need to rely on subsequent other design modifications, the connection holes 1 and slots 1 and the connection holes 2 and slots 2 can always achieve the purpose of alignment. Description of the Drawings

[0019] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0020] Figure 1 is a top view schematic diagram of the present invention before installing the mounting base plate;

[0021] Figure 2 is a top view schematic diagram of the present invention after installing the mounting base plate;

[0022] Figure 3 is Figure 1In order to improve the stability of the mounting base, a schematic diagram of the structure in which four sets of spur gears are arranged on a set of bases;

[0023] Figure 4 This is a structural cross-sectional view of the base when four sets of adjustment slide rails are quickly installed;

[0024] Figure 5 yes Figure 1 A schematic diagram of the enlarged structure of the butt end of the long arc segment and the short arc segment at A in the middle;

[0025] Figure 6 It is a structural schematic diagram of a pressing spring pressing an L-shaped block;

[0026] Figure 7 It is a cross-sectional view of a long arc segment;

[0027] Figure 8 It is a cross-sectional view of the short arc segment;

[0028] Figure 9 It is a schematic diagram of the structure of the installation base plate;

[0029] Figure 10 yes Figure 9 A cross-sectional view of a

[0030] Markings in the figure:

[0031] 1. Vibration table; 2. Adjustment slide rail; 3. Inner gear ring; 4. Outer gear; 5. Plug-in hole 1; 6. Through slot 1; 7. Base; 8. Locking hole; 9. Limit rod; 10. Mounting base plate; 11. Mounting hole; 12. Spur rack; 13. Spur gear; 14. Plug-in hole 2; 15. Rubber pad; 21. Long arc segment; 22. Short arc segment; 23. Notch; 24. Upper part of arc segment; 25. Middle part of arc segment; 26. Annular slide; 27. Lower part of arc segment; 28. Cylindrical stop block; 29. Rectangular slot 1; 210. Rectangular slot 2; 211. Pressure spring; 212. L-shaped block; 213. Sliding block; 214. Closing plate. DETAILED DESCRIPTION

[0032] Example 1

[0033] like Figures 1-8 As shown, a vibration table with an adjustable clamping assembly, in this embodiment, includes a vibration table surface 1 and multiple groups of annular adjustment rails 2 which are installed on the vibration table surface 1, the annular center of the adjustment rails 2 and the vibration center of the vibration table surface 1 are concentrically distributed, and a circle of inner gear ring 3 is arranged on the inner side of each group of adjustment rails 2, and an outer gear 4 for meshing and driving with the inner gear ring 3 in a one-to-one correspondence is installed on the vibration table surface 1, and multiple groups of plug holes 5 are evenly arranged on the outer gear 4 along the circumferential direction, and a through groove 6 for aligning and matching with the plug hole 5 is correspondingly provided on the vibration table surface 1;

[0034] A plurality of groups of base platforms 7 are further arranged on the vibration tabletop 1. The base platforms 7 are arranged across the inner and outer sides of the plurality of groups of adjusting slide rails 2 and are slidably installed with the plurality of groups of adjusting slide rails 2. A pair of locking holes 8 corresponding to both sides of a group of base platforms 7 are arranged on each group of adjusting slide rails 2. A limiting rod 9 is inserted into the locking hole 8 to lock the base platform 7 with the corresponding adjusting slide rail 2. The locking holes 8, the base platforms 7 and the adjusting slide rails 2 are arranged in one-to-one correspondence. An installation bottom plate 10 is slidably installed on the base platform 7 along the radial direction of the adjusting slide rail 2. A plurality of installation holes 11 distributed in an array are arranged on the installation bottom plate 10. The test piece is placed on the installation bottom plate 10 and is installed and fixed by aligning with the installation holes 11. A group of straight racks 12 are further arranged on one side of the installation bottom plate 10. At least one group of extension blocks is arranged on one side of each group of base platforms 7. A straight gear 13 meshing with the corresponding straight rack 12 is installed on a group of extension blocks. A plurality of second insertion holes 14 are evenly arranged on the straight gear 13 along the circumferential direction. A second through groove for cooperating with the second insertion holes 14 in alignment is arranged on the extension block.

[0035] At this point, first, the corresponding base 7 can be slid along the adjustment rail 2 to the middle of the corresponding pair of locking holes 8, and the limiting rods 9 are inserted into the locking holes 8 to limit the base 7 on both sides to achieve the position locking of the base 7 and the corresponding adjustment rail 2, and then according to the shape of the test piece to be tested, the adjustment rail 2 is rotated around the center so that each group of bases 7 is rotated to the corresponding support position adapted to the shape of the test piece, and then the installation base plate 10 is adjusted by sliding radially so that the installation base plate 10 is distributed in an array. One of the mounting holes 11 is aligned with the mounting hole of the test piece, and then connected by bolts or guide posts to complete the installation and positioning of the test piece on the mounting base plate 10. After the adjustment rail 2 is rotated into place, the adjustment rail 2 is locked by bolts or guide posts to connect the plug hole 15 and the through slot 16. After the mounting base plate 10 slides into place, the mounting base plate 10 is locked by bolts or guide posts to connect the plug hole 2 14 and the through slot 2. 0, there is no need for an external electric locking device to avoid damage during vibration, but simply bolts or guide columns are used for locking, which is simpler and more convenient, and has better stability. At the same time, in the device of the present invention, the outer gear 4 drives the circumferential position adjustment of the base 7, which is transitioned through the inner gear ring 3 with a larger diameter, that is, the outer gear 4 rotates more n circles, and the inner gear ring 3 will drive the base 7 to move a small arc length in the circumferential direction, that is, the outer gear ring rotates one circle, and the transition through the inner gear ring 3 can only make the base 7 move in the circumferential direction. The displacement of the base 7 changes less. Therefore, when the mounting hole 11 on the mounting base plate 10 is aligned with the mounting hole position of the specimen, if there is some alignment error between the plug hole 15 and the slot 16 as well as the plug hole 14 and the slot 2, the displacement change of the specimen mounting position can be ignored even if the rotation adjustment is forced. At this time, it can be equivalent to: during the aligned installation, there is no need to resort to other subsequent design modifications. The plug hole 15 and the slot 16 as well as the plug hole 2 14 and the slot 2 can always achieve the purpose of alignment.

[0036] The adjusting slide rail 2 includes a long arc segment 21 and a short arc segment 22 which are connected to form a ring. The long arc segment 21 is installed on the vibration table 1 by transfer, while the short arc segment 22 is installed on the vibration table 1 by sliding. The long arc segment 21 and the short arc segment 22 are detachably connected. Therefore, when it is necessary to remove the base 7 from the adjusting slide rail 2, it is only necessary to first separate the short arc segment 22 from the long arc segment 21, and then take the short arc segment 22 out of the vibration table 1. At this point, a ring-shaped gap can be formed, and then the base 7 can be slid along the adjusting slide rail 2. When it slides to the gap position, the base 7 can be taken out from the vibration table 1.

[0037] The base 7 is a gantry structure, which is arranged on the top surface of the adjustment slide rail 2 and has a notch 23 with an inverted T-shaped cross section. The top of the long arc segment 21 and the short arc segment 22 has an arc segment upper part 24 with a T-shaped cross section. The arc segment upper part 24 fits in the notch 23. A group of horizontal arc segment middle parts 25 are also provided in the middle of the long arc segment 21 and the short arc segment 22. The arc segment middle part 25 is supported on the top surface of the adjustment slide rail 2 to improve the stability of the base 7. The vibration table 1 is also provided with an inverted T-shaped cross section. The annular groove 26, the bottom of the long arc segment 21 is provided with an arc segment lower part 27 with an inverted T-shaped cross-section that fits in the annular groove 26, and the bottom of the short arc segment 22 is provided with a cylindrical stopper 28 vertically inserted into the annular groove 26. At this point, the long arc segment 21 can always be limited to rotate in the annular groove 26, and the short arc segment 22 can be taken out from the annular groove 26 after being disassembled from the long arc segment 21, and the whole composed of the long arc segment 21 and the short arc segment 22 is always limited on the vibration table 1.

[0038] The short arc segment 22 is an arc length corresponding to a central angle of 90°, and a rectangular groove 29 is provided at both ends of the short arc segment 22 and the long arc segment 21, and a rectangular groove 210 is provided at the end of the long arc segment 21 to connect with the rectangular groove 29, and a top pressure spring 211 is connected in the rectangular groove 29, and an L-shaped clamping block 212 is connected to the end of the top pressure spring 211, and a sliding clamping block 213 is provided on both sides of the vertical end of the L-shaped clamping block 212, and its horizontal end extends into the rectangular groove 210, and a sliding clamping groove that is slidably connected to the outside of the sliding clamping block 213 is provided in the rectangular groove 29. When the L-shaped clamping block 212 is driven by the top pressure spring 211, the sliding clamping groove is provided in the rectangular groove 29. The horizontal end extends into the rectangular groove 210, and the vertical section of the L-shaped block 212 is still clamped in the rectangular groove 1 29. At this time, the short arc segment 22 and the long arc segment 21 can be clamped and connected. When disassembly is required, it is only necessary to move the vertical end of the L-shaped block 212 to compress the top pressure spring 211 and pull it out of the rectangular groove 210. At this time, the short arc segment 22 is pulled upward to remove the short arc segment 22 from the vibration table 1. In order to ensure a smooth transition of the base 7 between the long arc segment 21 and the short arc segment 22, the vertical end of the L-shaped block 212 can be set flush with the top surface of the long arc segment 21 and the short arc segment 22.

[0039] After the horizontal end of the L-shaped clamping block 212 extends into the rectangular groove 210, it is clamped and limited on the top surface by the sealing plate 214 in the rectangular groove 210. When the horizontal end of the L-shaped clamping block 212 extends into the rectangular groove 210 and is limited by the sealing plate 214 under the drive of the top pressure spring 211, it can prevent the short arc segment 22 from jumping out of the docking end relative to the long arc segment 21 when the vibration table 1 vibrates.

[0040] The base 7 and the adjusting slide rail 2 are each provided with four groups, and the locking holes 8 are provided with four corresponding pairs.

[0041] The plug hole 1 5 and the through slot 1 6 as well as the plug hole 2 14 and the through slot 2 are all arranged perpendicular to the vibration table surface 1 .

[0042] The size of the mounting base plate 10 is larger than that of the base 7, and the top end of the limiting rod 9 extends out from the locking hole 8 to be flush with the bottom of the mounting base plate 10. Therefore, when the mounting base plate 10 slides to the appropriate range of the base 7, the locking hole 8 can be completely covered. At this time, if the limiting rod 9 is inserted into the locking hole 8, the limiting rod 9 can be crimped on the top end of the mounting base plate 10 after being blocked on both sides of the base 7, thereby further preventing the limiting rod 9 from falling out of the locking hole during vibration, thereby greatly improving the stability of the locking.

[0043] Example 2

[0044] like Figures 9-10 As shown, a vibration table with an adjustable clamping assembly is shown. In this embodiment, it is further limited based on embodiment 1, wherein the mounting hole 11 of the mounting base plate 10 is a countersunk hole, and a rubber pad 15 is adhered to the inner hole surface of the countersunk hole, and the diameter of one end of the countersunk hole close to the base 7 is larger than the diameter of one end of the countersunk hole away from the base 7. At this point, after the mounting hole 11 on the mounting base plate 10 is aligned with the specimen mounting hole position, the selected group of countersunk holes can be marked, and then the mounting base plate 10 is removed from the base 7, and the corresponding bolts or guide columns are used to extend into the countersunk holes. The big end of the bolt or guide column is placed on the countersunk end close to the side of the base 7, and then the mounting base plate 10 is installed on the base 7, and the test piece is aligned with the bolt or guide column for connection. The role of the rubber pad 15 is to adapt to the error fine-tuning that occurs when the plug hole 1 5 and the slot 1 6 as well as the plug hole 2 14 and the slot 2 are aligned. That is, when the alignment is achieved, if the plug hole 1 5 and the slot 1 6 as well as the plug hole 2 14 and the slot 2 have misalignment errors, it is only necessary to compress the thickness of the rubber pad 15 to complete the adaptation adjustment. The adjustment gap is relatively small and the adjustment is also relatively convenient.

[0045] The working principle of the present invention is as follows: A vibration table with an adjustable clamping assembly provided by the present invention not only has precise clamping and positioning adaptability for various shaped specimens, but also has good stability during vibration. At the same time, it can also be quickly replaced and maintained, with relatively low test costs and maintenance costs. The specific operation is as follows: First, the corresponding base 7 can be transferred and slid along the adjustment slide rail 2 to the middle of the corresponding pair of locking holes 8, and the limiting rod 9 is inserted into the locking holes 8 to limit both sides of the base 7, so as to lock the position of the base 7 corresponding to the adjustment slide rail 2. Then, according to the shape of the specimen to be tested, the adjustment slide rail 2 is rotated around the center, so that each group of bases 7 is rotated to the corresponding support position adapted to the outer shape of the specimen. Then, the mounting base plate 10 is slid radially adjusted so that one of the mounting holes 11 arranged in an array on the mounting base plate 10 is aligned with the mounting position hole of the specimen. Then, it is connected by inserting bolts or guide posts to complete the installation and positioning of the specimen on the mounting base plate 10. After the adjustment slide rail 2 rotates in place, the adjustment slide rail 2 is locked by aligning and connecting the bolt or guide post with the insertion hole one 5 and the slot one 6. After the mounting base plate 10 slides in place, the mounting base plate 10 is locked by aligning and connecting the bolt or guide post with the insertion hole two 14 and the slot two. When locking the adjustment slide rail 2 and the mounting base plate 10, there is no need to externally connect an electric locking device to avoid being damaged during vibration. Instead, simple bolts or guide posts are used for locking, which is relatively simple and convenient, and the stability is also good. At the same time, in the device of the present invention, the circumferential position adjustment of the base 7 driven by the external gear 4 is achieved through the inner gear ring 3 with a larger diameter. That is, when the external gear 4 rotates a relatively large number of n circles, the inner gear ring 3 will drive the base 7 to move a small arc length in the circumferential direction. That is, when the external gear ring rotates one circle, only a small displacement of the base 7 can be caused through the transition of the inner gear ring 3. Therefore, when the mounting holes 11 on the mounting base plate 10 are aligned with the mounting position holes of the specimen, if there are some alignment errors between the insertion hole one 5 and the slot one 6 and the insertion hole two 14 and the slot two, even if forced rotation adjustment is carried out, the displacement change of the specimen mounting position can be ignored. At this time, it can be equivalent to: during alignment installation, without the need to rely on subsequent other design modifications, the insertion hole one 5 and the slot one 6 and the insertion hole two 14 and the slot two can always achieve the purpose of alignment.

[0046] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vibrating table with an adjustable clamping assembly, characterized in that, It includes a vibration table and multiple groups of annular adjustment rails installed on the vibration table, the annular center of the adjustment rails and the vibration center of the vibration table are concentrically distributed, and a circle of inner gear rings are arranged on the inner side of each group of adjustment rails. An external gear for meshing and driving with the inner gear rings is installed on the vibration table, and multiple groups of plug holes are evenly arranged along the circumferential direction on the external gears. A through groove for one-to-one matching with the plug holes is correspondingly provided on the vibration table; The cam is provided with a plurality of locking holes corresponding to the two sides of a group of the base, and a limiting rod is inserted in the locking hole to lock the base with the corresponding adjusting rail. The locking hole is arranged in a one-to-one correspondence with the base and the adjusting rail. A mounting base is mounted on the base along the radial direction of the adjusting rail for sliding connection. The mounting base is provided with mounting holes distributed in an array. The specimen is placed on the mounting base and fixedly mounted by aligning the mounting holes with the mounting holes. A group of spur racks is also arranged on one side of the mounting base. At least one extension block is provided on one side of each group of the bases. A group of spur gears meshing with the corresponding spur racks are installed on one group of the extension blocks. A plurality of plug-in holes are evenly arranged on the spur gears along the circumferential direction. The extension block has a corresponding through groove two for aligning with the two plug-in holes. The adjusting slide rail comprises a long arc segment and a short arc segment which are connected to form a ring, the long arc segment is installed on the vibration table surface by transfer, and the short arc segment is installed on the vibration table surface by sliding, and the long arc segment and the short arc segment are detachably connected; The short arc segment is an arc length corresponding to a central angle of 90°, and a rectangular groove one is provided at both ends thereof that are connected to the long arc segment, and a rectangular groove two that is connected to the rectangular groove one is provided at the end of the long arc segment, and a top pressure spring is connected in the rectangular groove one, and the end of the top pressure spring is top-pressure-connected with an L-shaped clamping block, and sliding clamping blocks are provided on both sides of the vertical end of the L-shaped clamping block, and its horizontal end extends into the rectangular groove two, and a sliding clamping groove that is slidably connected to the outside of the sliding clamping block is provided in the rectangular groove one, and when the horizontal end of the L-shaped clamping block extends into the rectangular groove two under the drive of the top pressure spring, the vertical section of the L-shaped clamping block is still clamped in the rectangular groove one, at this time, the short arc segment and the long arc segment can be connected by clamping, and the vertical end of the L-shaped clamping block is flush with the top surfaces of the long arc segment and the short arc segment.

2. The vibrating table with an adjustable clamping assembly according to claim 1, characterized in that, The base is a gantry structure, which is arranged on the top surface of the adjusting slide rail and has a slot with an inverted T-shaped cross-section. The top of the long arc segment and the short arc segment has an arc segment upper part with a T-shaped cross-section, and the arc segment upper part fits in the slot. The middle part of the long arc segment and the short arc segment is also provided with a group of horizontal arc segment middle parts, and the arc segment middle parts are supported on the top surface of the adjusting slide rail. The vibration table surface is also provided with an annular slide groove with an inverted T-shaped cross-section, and the bottom of the long arc segment is provided with an arc segment lower part with an inverted T-shaped cross-section fitted in the annular slide groove, and the bottom of the short arc segment is provided with a cylindrical stop block vertically placed in the annular slide groove.

3. A vibrating table with an adjustable clamping assembly according to claim 1, characterized in that After the horizontal end of the L-shaped clamping block extends into the second rectangular groove, the top surface is clamped and limited by the sealing plate in the second rectangular groove.

4. A vibrating table with an adjustable clamping assembly according to claim 1, characterized in that, The mounting holes of the mounting base plate are counterbored holes, and a rubber pad is adhered to the inner hole surface of the counterbored holes. Moreover, the diameter of one end of the counterbored hole near the base is larger than the diameter of the other end of the counterbored hole away from the base.

5. A vibrating table with an adjustable clamping assembly according to claim 1, wherein The size of the mounting base plate is larger than the size of the base, and the top end of the limiting rod extends out of the locking hole to be flush with the bottom of the mounting base plate.

6. The vibrating table with an adjustable clamping assembly according to claim 1, wherein, Four groups of the base and the adjustment slide rails are provided respectively, and four pairs of corresponding locking holes are provided.

7. A vibrating table with an adjustable clamping assembly according to claim 1, characterized in that, The first insertion hole, the first through slot, the second insertion hole, and the second through slot are all arranged perpendicular to the vibration table surface.

Images