Centering auxiliary device for vibrating table
By designing a centering auxiliary device for a vibration table including a U-shaped frame and adjustment bolt, the problem of precise centering operation of the vibration table in the mechanical environment vibration test is solved, and higher stability and adaptability are achieved. Low-frequency vibration test conditions at 1Hz~5Hz.
Patent Information
- Application Number
- CN202422900773.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-11-27
AI Technical Summary
In mechanical environment vibration tests, especially in sinusoidal sweep vibration tests, the displacement characteristics of the vibration table require the locking body operation, but the prior art is difficult to achieve accurate centering operation, especially in the metal deformation of the vibration table or uneven paint surface of the vibration table In the case of error.
A centering auxiliary device for vibration table is designed, including a U-shaped frame, a U-shaped card slot, a positioning long nut, a fastening nut and a centering adjustment bolt. Through the combination of these components, the dynamic coil/airbag of the vibration table is realized. Accurate centering operation and has a micro-adjustment function to adapt to deformation or unplanar errors.
Achieve more precise locking body centering operation, enhance the stability and adaptability of the device, can adapt to the needs of the vibration table under low-frequency test conditions, and provide a variety of ways to deal with distances caused by mechanical structure changes. etc.
Smart Images
Figure CN222280089U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vibration tables, and in particular relates to a centering auxiliary device for a vibration table. Background Art
[0002] Mechanical environment vibration testing, especially sine-swept vibration testing, typically involves a sine-swept vibration test condition with a frequency range of 1Hz to 5Hz. During this vibration test, the inherent displacement characteristics of the shaker require a locking mechanism. This involves placing a rigid structure of appropriate length between the metal walls above / below / on either side of the airbag, limiting the relative displacement of the upper and lower metal walls. This limits the displacement of the shaker body. This locking mechanism requires proper alignment of the shaker's dynamic coil and airbag. Utility Model Content
[0003] In order to perform more precise centering operation on the dynamic coil / air bag of a vibration table, the utility model provides a centering auxiliary device for the vibration table.
[0004] The utility model is realized according to the following technical solutions.
[0005] A centering auxiliary device for a vibration table includes a U-shaped frame formed by an intermediate rod and two wall rods symmetrically arranged at both ends of the intermediate rod, a U-shaped slot, and long positioning nuts and fastening nuts symmetrically arranged on the connecting rods on both sides of the U-shaped slot. Centering adjustment bolts are symmetrically arranged on the two wall rods, and the bottom of the U-shaped slot is connected to the intermediate rod.
[0006] Furthermore, the bottom of the U-shaped slot is connected to the middle rod by fastening bolts.
[0007] Furthermore, the middle rod and the two wall rods symmetrically arranged at both ends of the middle rod are integrally formed, and the U-shaped slot and the connecting rods on both sides of the U-shaped slot are integrally formed.
[0008] Compared with the prior art, the beneficial effects of the present invention are:
[0009] 1. A more accurate locking platform centering method: the metal walls on both sides of the airbag are displaced by positioning the long nut and positioned by the centering adjustment bolt, making the locking platform centering operation more accurate. At the same time, this device has a micro-adjustment function, which can adapt to errors caused by metal deformation or uneven paint surface of the vibration platform.
[0010] 2. The centering auxiliary device is more stable. The device is positioned by positioning long nuts and adjusting bolts, and has pre-tightening of fastening nuts. It has good equipment stability and can better meet the needs of vibration test equipment.
[0011] 3. It has higher adaptability. During the operation of locking the vibration table, the distances on both sides of the vibration table may be unequal due to slight changes in the mechanical structure. This vibration table locking table centering auxiliary device is easier to adapt than the traditional method.
[0012] 4. Multiple ways of use, the U-shaped frame can be removed and used. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the utility model;
[0014] Figure 2 This is a schematic diagram of the use status of the utility model Figure 1 ;
[0015] Figure 3 This is a schematic diagram of the use status of the utility model Figure 2 .
[0016] Among them, 1-middle rod, 2-wall rod, 3-U-shaped slot, 4-connecting rod, 5-positioning long nut, 6-fastening nut, 7-centering adjustment bolt, 8-fastening bolt, 9-upper airbag, 10-lower airbag, 11-metal wall, 12-upper metal wall of upper airbag, 13-lower metal wall of lower airbag. DETAILED DESCRIPTION
[0017] The technical solution of the present utility model is further described below with reference to the accompanying drawings and embodiments.
[0018] like Figure 1-Figure 3 As shown, a centering auxiliary device for a vibration table includes a U-shaped frame formed by an intermediate rod 1 and two wall rods 2 symmetrically arranged at both ends of the intermediate rod 1, a U-shaped slot 3, and long positioning nuts 5 and fastening nuts 6 symmetrically arranged on the connecting rods 4 on both sides of the U-shaped slot 3. Centering adjustment bolts 7 are symmetrically arranged on the two wall rods 2, and the bottom of the U-shaped slot 3 is connected to the intermediate rod 1.
[0019] The vibration table centering auxiliary device has a U-shaped slot 3 whose bottom is connected to the intermediate rod 1 via a fastening bolt 8 .
[0020] The vibration table centering auxiliary device comprises an intermediate rod 1 and two wall rods 2 symmetrically arranged at both ends of the intermediate rod 1 formed integrally, and the U-shaped slot 3 and the connecting rods 4 on both sides of the U-shaped slot 3 formed integrally.
[0021] The middle portion of the U-shaped slot 3 is connected to the middle portion of the intermediate rod 1 .
[0022] The U-shaped frame is the main functional component of the centering auxiliary device, which is fixed to the U-shaped slot 3 by fastening bolts 8 and is used to determine the centering position.
[0023] The positioning long nut 5 and the fastening nut 6 are screwed together on the connecting rod 4 to fix the position of the centering auxiliary device.
[0024] The centering adjustment bolts 7 are located at the upper and lower ends of the U-shaped frame and are used for fine-tuning the position of the centering auxiliary device.
[0025] Place the U-shaped slot 3 on the metal wall 11 between the upper airbag 9 and the lower airbag 10 of the vibration table. At this time, tighten the two symmetrical long positioning nuts 5 on the upper metal wall 12 of the upper airbag and the lower metal wall 13 of the lower airbag respectively, and then tighten them with the fastening nuts 6 to improve the reliability and stability of the centering auxiliary device.
[0026] When performing the vibration table locking operation, the vibration table is adjusted to a roughly centered position by inflating and deflating the upper airbag 9 and the lower airbag 10 of the vibration table, and then the U-shaped slot 3 is clamped on the metal wall 11 between the upper airbag 9 and the lower airbag 10, and then the upper airbag 9 and the lower airbag 10 of the vibration table are deflated. When the air pressure in the upper airbag 9 and the lower airbag 10 is not enough to support the upper metal wall 12 of the upper airbag and the lower metal wall 13 of the lower airbag, the upper metal wall 12 of the upper airbag will move to the metal wall 11 between the upper and lower airbags due to vibration. The upper metal wall 12 of the upper airbag and the lower metal wall 13 of the lower airbag move in tandem. When the upper and lower airbags 9 and 10 are no longer supporting each other, deflation is stopped and the upper positioning nut 5 is tightened against the upper metal wall 12. This adjusts the upper metal wall 12 to the lower end of the centering adjustment bolt 7 on the upper side of the U-shaped frame, and the lower metal wall 13 to near the upper end of the centering adjustment bolt 7 on the lower side of the U-shaped frame (i.e., contact but not tightened). The lower positioning nut 5 is then tightened against the lower metal wall 13. The centering adjustment bolt 7 is then adjusted to secure the device between the upper metal wall 12, the metal wall 11 between the upper and lower airbags, and the lower metal wall 13. Finally, pre-tighten the nuts 6 to achieve centering during the vibration table locking operation. The vibration table model is H844A.
[0027] The device can also remove the U-shaped frame and be used to lock the platform body when the distances from the upper metal wall 12 to the metal wall 11 of the upper airbag and from the lower metal wall 13 to the metal wall 11 of the lower airbag are different and cause the centering to be abnormal. The specific implementation method is: the U-shaped slot 3 is stuck on the metal wall 11 between the upper and lower airbags, and then the airbag 9 on the vibration table and the airbag 10 under the vibration table are deflated. When the air pressure in the airbag 9 and the lower airbag 10 on the vibration table is not enough to support the upper metal wall 12 of the upper airbag and the lower metal wall 13 of the lower airbag, the upper metal wall 12 of the upper airbag will be displaced toward the metal wall 11 between the upper and lower airbags. When the upper airbag 9 and the lower airbag 10 have no supporting effect, the deflation operation is stopped, and then the two symmetrical positioning long nuts 5 are tightened on the upper metal wall 12 of the upper airbag and the lower metal wall 13 of the lower airbag respectively. The basis for adjustment is the test requirements or equipment status. When the test requirements or equipment capabilities are met, the fastening nuts 6 are pre-tightened to achieve non-centering operation of the vibration table lock body.
[0028] This utility model is suitable for use in mechanical environmental vibration tests, including sine sweep tests involving low-frequency vibration test conditions such as 1Hz to 5Hz. It provides an auxiliary centering device for locking the vibration table body during the test. This auxiliary centering device for locking the vibration table body can achieve precise centering requirements when locking the vibration table body.
[0029] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the present invention to other occasions without improvement, should be regarded as the scope of protection of the present invention.
Claims
1. A centering auxiliary device for a vibration table, characterized in that: The invention comprises a U-shaped frame formed by an intermediate rod (1) and two wall rods (2) symmetrically arranged at both ends of the intermediate rod (1), a U-shaped slot (3), and long positioning nuts (5) and fastening nuts (6) symmetrically arranged on connecting rods (4) at both sides of the U-shaped slot (3); centering adjustment bolts (7) are symmetrically arranged on the two wall rods (2); and the bottom of the U-shaped slot (3) is connected to the intermediate rod (1).
2. The centering auxiliary device for a vibration table according to claim 1, characterized in that: The bottom of the U-shaped slot (3) is connected to the middle rod (1) via a fastening bolt (8).
3. The centering auxiliary device for a vibration table according to claim 1, characterized in that: The middle rod (1) and the two wall rods (2) symmetrically arranged at both ends of the middle rod (1) are integrally formed, and the U-shaped slot (3) and the connecting rods (4) on both sides of the U-shaped slot (3) are integrally formed.