Moving coil structure of electric vibration test bench

Abstract

The utility model relates to the technical field of vibration test equipment, in particular to a moving coil structure of an electric vibration test stand, which comprises a vibration stand main body, two groups of connecting plates, a base and two groups of supporting vertical plates, the two ends of the vibration stand main body are symmetrically and fixedly connected with the two groups of connecting plates, and the two ends of the base are symmetrically and fixedly connected with the two groups of supporting vertical plates through bolts. The upper end of the vibration table main body is in vibration connection with a moving coil main body, the upper end of the moving coil main body is provided with a moving coil workbench, one end of the moving coil workbench is provided with a threaded hole, two ends of the moving coil workbench are symmetrically and fixedly connected with two groups of fastening assemblies through bolts, and test samples are clamped and fixed in the middles of the fastening assemblies; according to the moving coil structure of the electric vibration test bench provided by the utility model, one end of the moving coil workbench is fixedly connected with the fastening assembly through the bolt, so that a test sample can be rapidly and stably clamped, and inconvenience in mounting of a fixing clamp is avoided; and a rubber buffer pad on the fastening assembly also has a good protection effect on the test sample, so that the test sample is prevented from being damaged by clamping of the clamp.

Description

Technical Field

[0001] This utility model relates to the field of vibration testing equipment technology, specifically to a moving coil structure of an electric vibration test bench. Background Technology

[0002] An electric vibration test bench is a device used to simulate the vibration environment that products may encounter during manufacturing, transportation, and use. It is widely used in aerospace, electronics, automotive, and instrumentation fields. It generates mechanical vibration through electromagnetic induction to test the performance and reliability of products under temperature, humidity, and vibration conditions. The moving coil structure is one of its core components, mainly composed of a drive coil and a worktable. The drive coil is located in the air gap of the magnetic circuit. When an alternating current is applied, according to the law of electromagnetic induction, the coil is subjected to an alternating force in the magnetic field, which drives the worktable to vibrate.

[0003] Chinese Patent CN205333278U discloses a long-stroke moving coil structure for an electric vibration table. This invention designs the structure for fixing the drive coil in the vibration table as two support frames, forming a double-support frame structure. The drive coil is wound between the upper and lower support frames, and the two support frames are fixed and the excitation force is transmitted between them via a connecting rod. This ensures that the connection strength and force transmission of the extended drive coil are not affected, preventing the drive coil from detaching from the frame due to insufficient bonding strength and avoiding damage to the moving coil. Simultaneously, the guiding method of the moving coil is improved by setting guide rods at the top and bottom of the moving coil support frame to achieve overall guidance of the moving coil structure, resulting in better guiding performance. Furthermore, the lower guide rod is equipped with a lead wire groove, providing wiring performance and reliably leading out the power supply wires of the drive coil, ensuring the overall stable and safe operation of the vibration table.

[0004] The moving coil structure of the above-mentioned scheme and existing technology electric vibration test bench usually consists of a drive coil and a worktable. However, the existing worktable usually has multiple sets of threaded holes, and bolts are used to fix the test product with additional clamps. Every time the product is changed, all bolts need to be removed, and it is very inconvenient to reinstall the holes. There is a lack of a corresponding fastening structure with a detachable moving coil worktable for easy clamping and fixing, which needs to be improved and optimized. Utility Model Content

[0005] The purpose of this invention is to provide a moving coil structure for an electric vibration test bench to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A moving coil structure of an electric vibration test bench includes a vibration table body, a connecting plate, a base, and a supporting vertical plate. Two sets of connecting plates are symmetrically fixedly connected to both ends of the vibration table body. Two sets of supporting vertical plates are symmetrically fixedly connected to both ends of the base with bolts. A connecting plate is connected to the middle of the supporting vertical plate. A supporting horizontal plate is fixedly connected to the middle of the supporting vertical plate. Air support springs are symmetrically fixedly connected to both ends of the supporting horizontal plate. A sliding support column is fixedly connected to the middle of the air support springs. A connecting plate is inserted into one end of the sliding support column. A moving coil body is vibratingly connected to the upper end of the vibration table body. A moving coil worktable is provided on the upper end of the moving coil body. A threaded hole is provided at one end of the moving coil worktable. Two sets of fastening components are symmetrically fixedly connected to both ends of the moving coil worktable with bolts. A test sample is clamped and fixed in the middle of the fastening components.

[0007] Preferably, the support vertical plate is rotatably connected to a pivot at its center.

[0008] Preferably, the fastening assembly includes a slide rail body, which is bolted to a threaded hole. Two sets of slide grooves are symmetrically provided at both ends of the slide rail body, and a slider block is slidably engaged in the slide groove.

[0009] Preferably, a spring is fixedly connected to one end of the slider block, a clamping plate is fixedly connected to one end of the slider block, and a rubber buffer pad is fixedly connected to one end of the clamping plate.

[0010] Preferably, one end of the spring is fixedly connected to the inner wall of the groove.

[0011] Preferably, one set of clamping plates has long screws fixedly connected to both ends symmetrically, and the other set of clamping plates has round holes symmetrically provided at both ends.

[0012] Preferably, one end of the long lead screw is inserted into a round hole, an anti-loosening washer is inserted into one end of the long lead screw, and a fastening nut is threaded onto one end of the long lead screw.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The moving coil structure of the electric vibration test bench proposed in this utility model mainly achieves rapid and stable clamping of the test sample by fixing the fastening component to one end of the moving coil worktable with bolts. This avoids the inconvenience of installing the fixed fixture, and the rubber buffer pad on the fastening component also provides good protection for the test sample, preventing the fixture from damaging the test sample. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the moving coil structure of an electric vibration test bench;

[0016] Figure 2for Figure 1 This is an enlarged view of part A;

[0017] Figure 3 This is a schematic diagram of the moving coil structure of an electric vibration test bench from another perspective.

[0018] Figure 4 This is a schematic diagram of the clamping test sample structure of the moving coil structure of an electric vibration test bench;

[0019] Figure 5 This is a schematic diagram of the fastening assembly structure of the moving coil of an electric vibration test bench;

[0020] Figure 6 This is a cross-sectional view of the fastening assembly structure of the moving coil of an electric vibration test bench.

[0021] In the diagram: 1. Vibration table body, 101. Connecting plate, 2. Base, 3. Support vertical plate, 301. Support horizontal plate, 4. Air support spring, 5. Sliding support column, 6. Moving coil body, 7. Moving coil worktable, 701. Threaded hole, 702. Fastening assembly, 8. Slide rail, 801. Slide groove, 802. Slider block, 803. Spring, 804. Clamping plate, 805. Rubber buffer pad, 806. Long lead screw, 807. Round hole, 808. Anti-detachment washer, 809. Fastening nut, 810. Test sample, 9. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figures 1-6 The present invention provides the following two preferred embodiments:

[0024] Example 1: A moving coil structure of an electric vibration test bench includes a vibration table body 1, a connecting plate 101, a base 2, and a supporting vertical plate 3. Two sets of connecting plates 101 are symmetrically fixedly connected to both ends of the vibration table body 1. Two sets of supporting vertical plates 3 are symmetrically fixedly connected to both ends of the base 2 with bolts. A connecting plate 101 is connected to the middle of the supporting vertical plate 3. A supporting horizontal plate 4 is fixedly connected to the middle of the supporting vertical plate 3. Air support springs 5 ​​are symmetrically fixedly connected to both ends of the supporting horizontal plate 4. A sliding support column 6 is fixedly connected to the middle of the air support springs 5. A connecting plate 101 is inserted into one end of the sliding support column 6. A moving coil body 7 is vibratingly connected to the upper end of the vibration table body 1. A moving coil worktable 701 is provided on the upper end of the moving coil body 7. A threaded hole 702 is provided at one end of the moving coil worktable 701. Two sets of fastening components are symmetrically fixedly connected to both ends of the moving coil worktable 701 with bolts. A test sample 9 is clamped and fixed in the middle of the fastening components. A rotating shaft 301 is rotatably connected to the middle of the supporting vertical plate 3.

[0025] In use, the two sets of support vertical plates 3, which are symmetrically bolted to both ends of the base 2, are connected to support horizontal plates 4. The air support springs 5 ​​and the sliding support columns 6 connected to the support springs 5, which are symmetrically bolted to both ends of the support horizontal plates 4, provide good support and vibration buffer for the connecting plate 101 on the main body of the vibration table 1. The bolted fastening components on the moving coil worktable 701 can easily clamp the test sample 9, avoiding frequent alignment and bolted clamping. When an expansion component is needed, the fastening component can be removed simply by unscrewing the bolts between the fastening component and the moving coil worktable 701.

[0026] Example 2: Based on Example 1, the fastening assembly includes a slide rail body 801, which is bolted to a threaded hole 702. Two sets of slide grooves 802 are symmetrically arranged at both ends of the slide rail body 801. A slider block 803 is slidably engaged within the slide groove 802. A spring 804 is fixedly connected to one end of the slider block 803, and a clamping plate 805 is fixedly connected to one end of the slider block 803. A rubber buffer pad 806 is fixedly connected to one end of the clamping plate 805. One end of the spring 804 is fixedly connected to the inner wall of the slide groove 802. A long lead screw 807 is symmetrically fixedly connected to both ends of one set of clamping plates 805, and a round hole 808 is symmetrically arranged at both ends of the other set of clamping plates 805. One end of the long lead screw 807 is inserted into the round hole 808, and an anti-loosening washer 809 is inserted into one end of the long lead screw 807. A fastening nut 810 is threadedly connected to one end of the long lead screw 807.

[0027] In use, the two sets of fastening components are bolted to the threaded holes 702 at both ends of the moving coil worktable 701. At the same time, the two clamping plates 805 are pulled to both sides, and the test sample 9 is placed between the two clamping plates 805. After releasing, the two clamping plates 805 tightly clamp the test sample 9 under the restoring pull of the spring 804. The slider block at the lower end of the clamping plate 805 can slide well in the slide groove 802 on the slide rail body 801. When the two clamping plates 805 move towards the middle, the two long screw rods 807 are also aligned and inserted into the round hole 808. The anti-loosening washer 809 is inserted into one end of the long screw rod 807 and the fastening nut 810 is tightened to complete the fixation of the test sample 9. The rubber buffer pad 806 plays a good role in buffering and protecting the test sample 9.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A moving coil structure of an electric vibration test bench, comprising a vibration table body (1), a connecting plate (101), a base (2), and a supporting vertical plate (3), wherein two sets of connecting plates (101) are symmetrically fixedly connected to both ends of the vibration table body (1), and two sets of supporting vertical plates (3) are symmetrically bolted to both ends of the base (2), and a connecting plate (101) is slidably connected to the middle of the supporting vertical plate (3), characterized in that: A support horizontal plate (4) is fixedly connected to the middle of the support vertical plate (3). Air support springs (5) are symmetrically fixedly connected to both ends of the support horizontal plate (4). A sliding support column (6) is fixedly connected to the middle of the air support spring (5). A connecting plate (101) is inserted into one end of the sliding support column (6). A moving coil body (7) is vibratingly connected to the upper end of the vibration table body (1). A moving coil worktable (701) is provided on the upper end of the moving coil body (7). A threaded hole (702) is provided on one end of the moving coil worktable (701). Two sets of fastening components are symmetrically bolted to both ends of the moving coil worktable (701). A test sample (9) is clamped and fixed in the middle of the fastening components.

2. The moving coil structure of an electric vibration test bench according to claim 1, characterized in that: The supporting vertical plate (3) is rotatably connected to a pivot (301) in the middle.

3. The moving coil structure of an electric vibration test bench according to claim 1, characterized in that: The fastening assembly includes a slide rail body (801), which is bolted to a threaded hole (702). The slide rail body (801) has two sets of sliding grooves (802) symmetrically arranged at both ends, and a slider block (803) is slidably engaged in the sliding groove (802).

4. The moving coil structure of an electric vibration test bench according to claim 3, characterized in that: A spring (804) is fixedly connected to one end of the slider block (803), a clamping plate (805) is fixedly connected to one end of the slider block (803), and a rubber buffer pad (806) is fixedly connected to one end of the clamping plate (805).

5. The moving coil structure of an electric vibration test bench according to claim 4, characterized in that: One end of the spring (804) is fixedly connected to the inner wall of the groove (802).

6. The moving coil structure of an electric vibration test bench according to claim 4, characterized in that: One set of clamping plates (805) has long screws (807) symmetrically fixedly connected at both ends, and the other set of clamping plates (805) has round holes (808) symmetrically provided at both ends.

7. The moving coil structure of an electric vibration test bench according to claim 6, characterized in that: One end of the long lead screw (807) is inserted into the round hole (808), and an anti-loosening washer (809) is inserted into the other end of the long lead screw (807). A fastening nut (810) is threaded onto the other end of the long lead screw (807).

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