Horizontal inertial vibration test bench
By separating the motor from the vibration table and connecting it to the shaft using a docking component, the problem of motor damage during vibration was solved, thus achieving motor protection and normal rotation test of the specimen.
Patent Information
- Application Number
- CN202422742059.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-11
AI Technical Summary
In existing horizontal inertial vibration test benches, the motor is directly mounted on the vibration table, which makes the motor prone to damage during vibration, especially problems such as wire detachment.
The motor is separated from the vibration table and connected to the rotating shaft through a docking component. The docking component maintains relative positioning in the circumferential direction and moves relative to each other in the first direction, thus counteracting the pushing force of vibration on the motor.
It effectively protects the motor from vibration damage, extends the motor's service life, and ensures the normal rotation test of the test specimen.
Smart Images
Figure CN223538486U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of inertial testing equipment technology, specifically to a horizontal inertial vibration test bench. Background Technology
[0002] In related technologies, when conducting horizontal inertial vibration tests on rotating inertial devices such as gyroscopes (hereinafter referred to as test specimens), a test bench is mainly used. This bench mainly includes a motor and a vibration table capable of horizontal vibration. During the test, the test specimen is mounted on the vibration table, and the vibration table applies a horizontal vibration to the test specimen. Then, the motor drives the test specimen to rotate, thus testing the performance of the test specimen under a horizontal vibration environment.
[0003] For this type of test bench, when the specimen is vibrated horizontally by the vibration table, it will have a horizontal displacement (i.e., a displacement parallel to the axial direction of the motor shaft). The motor shaft is generally axially connected to the specimen shaft. If the motor remains stationary during the test, the horizontal displacement of the specimen will exert axial pressure on the motor, which can easily damage the motor shaft. Therefore, in related technologies, in order to enable the motor to adapt to the vibration of the vibration table and maintain horizontal displacement in the same direction as the specimen during horizontal vibration, the motor is generally directly mounted on the vibration table. Although this method can ensure that the motor can synchronously displace horizontally to counteract the axial thrust from the specimen during vibration, the motor is directly mounted on the vibration table, and the internal components of the motor may be damaged by the vibration, such as wires coming loose. Therefore, further improvement is needed. Utility Model Content
[0004] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this utility model is to provide a horizontal inertial vibration test bench.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A horizontal inertial vibration test bench includes a vibration table and a motor. The vibration table is capable of generating horizontal vibration in a first direction. A fixture is provided on the vibration table, and a rotating shaft with its axis of rotation parallel to the first direction is rotatably connected to the fixture. The rotating shaft includes a mounting end for mounting a test specimen. The motor is used to drive the rotating shaft to rotate and includes a main shaft coaxial with the rotating shaft. The motor is independent of the vibration table. The test bench also includes a docking component for docking with the rotating shaft. The docking component is located on the main shaft and can rotate synchronously with the main shaft. Under test conditions, the docking component is relatively positioned relative to the rotating shaft in the circumferential direction and relatively movable relative to the rotating shaft in the first direction.
[0007] Compared with existing technologies, the advantages of this solution are:
[0008] In this solution, by separating the motor from the vibration table, the vibration of the vibration table will not affect the use of the motor too much, thus preventing the motor from being damaged by excessive vibration.
[0009] Furthermore, in this design, the docking component is positioned relative to the rotating shaft in the circumferential direction and moves relative to the rotating shaft in the first direction. This ensures that the motor can drive the rotating shaft to rotate, thereby rotating the specimen for normal testing. Moreover, since the docking component can move in the first direction, the vibration and displacement in the first direction from the vibration table on the specimen and the rotating shaft will not push against the motor's main shaft, thus ensuring the service life of the motor's main shaft.
[0010] As an optional embodiment of this utility model, one of the docking components and the rotating shaft is provided with a guide rod extending in a first direction, and the other is provided with a guide hole for the guide rod to move through in the first direction.
[0011] As an optional embodiment of this utility model, the end of the rotating shaft away from the installation end is provided with a docking plate, and one of the guide rod and the guide hole is provided on the docking plate, and the other is provided on the docking component.
[0012] As an optional embodiment of this utility model, the docking member can move between a locked position and an unlocked position along a first direction; in the locked position, the docking member is locked on the main shaft, and the guide rod passes through the guide hole to realize the docking of the docking member and the rotating shaft; in the unlocked position, the guide rod is pulled out from the guide hole.
[0013] As an optional embodiment of this utility model, in the locked position, the docking member is locked to the main shaft by a locking member.
[0014] As an optional embodiment of this utility model, the locking component includes a bolt, and the docking component is provided with a radially arranged through hole; the main shaft is provided with a radially arranged screw hole. In the locked position, the through hole and the screw hole are aligned, and the bolt is screwed into the screw hole through the through hole to lock the docking component.
[0015] As an optional embodiment of this utility model, the test bench further includes a bracket for fixing to the ground and separate from the vibration table, and the motor is mounted on the bracket.
[0016] As an optional embodiment of this utility model, the mounting end includes a mounting disk.
[0017] Other advantages and effects of this utility model are explained in detail in the specific embodiments and accompanying drawings. Attached Figure Description
[0018] Figure 1 This is an exploded view of the present invention;
[0019] Figure 2 This is a schematic diagram of the structure of this utility model (the docking components are in the locked position);
[0020] Figure 3 This is a structural schematic diagram of the present invention (the docking component is in the unlocked position);
[0021] Figure 4 This is a partial cross-sectional view of the present invention. Detailed Implementation
[0022] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.
[0023] In the following description, terms such as “inner,” “outer,” “upper,” “lower,” “left,” and “right” that indicate orientation or positional relationship are used only for the convenience of describing the embodiments and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0024] Please see Figure 1-4 As shown, this embodiment provides a horizontal inertial vibration test bench, which is mainly used for horizontal inertial vibration tests on inertial devices such as gyroscopes (hereinafter referred to as test specimens M).
[0025] The test bench includes a vibration table 1 and a motor 2; the vibration table 1 is capable of generating horizontal vibration in a first direction, that is, the vibration table 1 is capable of generating vibration in a first direction, which is located in the horizontal direction; the vibration table 1 is a common vibration test device and has been widely used and described in the prior art, so it will not be described in detail here.
[0026] The vibration table 1 is equipped with a fixture 3, and the fixture 3 is rotatably connected to a rotating shaft 4 whose rotation axis is parallel to the first direction via a rotating shaft 4. The two ends of the rotating shaft 4 extend out of the two sides of the fixture 3, with one side serving as the mounting end for mounting the specimen M. For example, in this embodiment, a mounting plate 41 is fixed at one end of the rotating shaft 4 as the mounting end. During the test, the specimen M is mounted on the mounting plate 41, and the rotation axis of the specimen M coincides with the axis of the rotating shaft 4. The rotating shaft 4 drives the specimen M to rotate, and at the same time, the vibration table 1 generates vibration in the first direction, thereby driving the fixture 3, the rotating shaft 4, and the specimen M to vibrate in the first direction.
[0027] Motor 2 is used to drive the rotating shaft 4 to rotate. By controlling the speed and direction of motor 2, the speed and direction of specimen M can be controlled.
[0028] The motor 2 includes a main shaft 21 coaxially arranged with the rotating shaft 4. The main shaft 21 can be the output shaft of the motor 2 itself, or it can be a shaft fixed on the output shaft of the motor 2.
[0029] Furthermore, to prevent the vibration of the vibration table 1 from excessively affecting the motor 2, in this embodiment, the motor 2 is independent of the vibration table 1; that is, the motor 2 and the vibration table 1 are separate from each other. Specifically:
[0030] The test bench also includes a bracket 7 for fixing to the ground and separate from the vibration table 1, and the motor 2 is mounted on the bracket 7. The motor 2 is coaxially arranged with the rotating shaft 4.
[0031] The test bench also includes a docking component 5 for docking with the rotating shaft 4. The docking component 5 is located on the main shaft 21 and can rotate synchronously with the main shaft 21. Under test conditions, the docking component 5 is relatively positioned relative to the rotating shaft 4 in the circumferential direction and relatively movable relative to the rotating shaft 4 in the first direction.
[0032] During the test, the specimen M is installed at the mounting end, the vibration table 1 and the motor 2 are turned on, and the motor 2 is controlled to work at the set speed and direction required by the test. Then, the motor 2 drives the rotating shaft 4 to rotate through the docking component 5, so that the specimen M rotates in the vibration environment in the first direction to complete the horizontal vibration inertia test.
[0033] During this process, since the motor 2 is independent of the vibration table 1, the vibration of the vibration table 1 will not affect the use of the motor 2 too much, so that the motor 2 will not be damaged by excessive vibration.
[0034] Furthermore, the docking component 5 is positioned relative to the rotating shaft 4 in the circumferential direction and moves relative to the rotating shaft 4 in the first direction. This ensures that the motor 2 can drive the rotating shaft 4 to rotate, thereby driving the specimen M to rotate for normal testing. Moreover, since the docking component 5 can move in the first direction, the vibration and displacement in the first direction from the vibration table 1 on the specimen M and the rotating shaft 4 will not push the main shaft 21 of the motor 2, thus ensuring the service life of the main shaft 21 of the motor 2.
[0035] The docking member 5 and the rotating shaft 4 are provided with a guide rod 51 extending in the first direction on one of them, and a guide hole 421 for the guide rod 51 to move through in the first direction on the other.
[0036] For example, in this embodiment, the guide rod 51 is provided on the docking member 5 and the guide hole 421 is provided on the rotating shaft 4 as an example for explanation.
[0037] In this embodiment, the docking member 5 is roughly conical in shape, but it can also be cylindrical or other structures, which will not be elaborated on here.
[0038] The end of the rotating shaft 4 away from the installation end is provided with a docking plate 42, and a guide hole 421 is provided on the docking plate 42.
[0039] Thus, under the action of the guide rod 51, when the docking component 5 is driven to rotate by the motor 2, it will drive the rotating shaft 4 to rotate together through the guide rod 51, so as to realize the rotation of the test piece M by the rotating shaft 4; in addition, when the rotating shaft 4 is subjected to vibration in the first direction and has a tendency to displace to the right (i.e. to the side closer to the motor 2), the rotating shaft 4 can move to the right relative to the docking component 5, thereby offsetting the rightward movement of the rotating shaft 4, so that the rotating shaft 4 will not push the main shaft 21 and the motor 2 in the first direction.
[0040] Furthermore, in order to disengage the connection between the docking member 5 and the rotating shaft 4, in this embodiment, the docking member 5 is movable between a locked position and an unlocked position along a first direction. That is, the docking member 5 is movable along the main shaft 21 in the first direction; specifically, in this embodiment, the docking member 5 is movably mounted on the main shaft 21.
[0041] In the locked position, the docking member 5 is locked on the main shaft 21 so that the docking member 5 remains relatively stationary relative to the main shaft 21, and the guide rod 51 passes through the guide hole 421 to realize the docking of the docking member 5 and the rotating shaft 4. At this time, the docking member 5 and the rotating shaft 4 maintain circumferential relative positioning, so that the rotation of the docking member 5 can drive the rotating shaft 4 to rotate.
[0042] In the unlocked position, the guide rod 51 is pulled out from the guide hole 421. At this time, the docking component 5 and the rotating shaft 4 are in a separated state, realizing the disconnection between the rotating shaft 4 and the docking component 5. At this time, the tooling 3 or the rotating shaft 4 can be disassembled and maintained.
[0043] In the locked position, the docking member 5 is locked to the main shaft 21 by a locking element, for example, by using a bolt 6 as a locking element.
[0044] Specifically, the docking component 5 is provided with a radially arranged through hole 52; the main shaft 21 is provided with a radially arranged screw hole 211, which is adapted to the bolt 6. In the locked position, the through hole 52 and the screw hole 211 are aligned, and then the bolt 6 is screwed into the screw hole 211 through the through hole 52 to lock the docking component 5.
[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.
Claims
1. A horizontal inertial vibration test bench, comprising a vibration table and a motor; the vibration table is capable of generating horizontal vibration in a first direction; a fixture is provided on the vibration table, and a rotating shaft with its rotation axis parallel to the first direction is rotatably connected to the fixture; the rotating shaft includes a mounting end for mounting a test specimen; the motor is used to drive the rotating shaft to rotate, and includes a main shaft coaxial with the rotating shaft; characterized in that, The motor is independent of the vibration table. The test table also includes a docking component for docking with the rotating shaft. The docking component is located on the main shaft and can rotate synchronously with the main shaft. Under test conditions, the docking component is relatively positioned relative to the rotating shaft in the circumferential direction and relatively movable relative to the rotating shaft in a first direction.
2. The horizontal inertial vibration test bench according to claim 1, characterized in that, The docking component and the rotating shaft, one of which is provided with a guide rod extending in a first direction, and the other of which is provided with a guide hole for the guide rod to move through in the first direction.
3. A horizontal inertial vibration test bench according to claim 2, characterized in that, The end of the rotating shaft away from the installation end is provided with a docking plate. The guide rod and the guide hole are respectively provided on the docking plate and on the docking component.
4. The horizontal inertial vibration test bench according to claim 1, characterized in that, The docking member can move between a locked position and an unlocked position along a first direction; in the locked position, the docking member is locked on the main shaft, and the guide rod passes through the guide hole to realize the docking of the docking member and the rotating shaft. In the unlocked position, the guide rod is pulled out of the guide hole.
5. A horizontal inertial vibration test bench according to claim 4, characterized in that, In the locked position, the docking member is locked to the spindle by a locking element.
6. A horizontal inertial vibration test bench according to claim 5, characterized in that, The locking component includes a bolt, and the docking member has a radially arranged through hole; the main shaft has a radially arranged screw hole. In the locked position, the through hole and the screw hole are aligned, and the bolt is screwed into the screw hole through the through hole to lock the docking member.
7. A horizontal inertial vibration test bench according to claim 1, characterized in that, The test bench also includes a bracket for fixing to the ground and separate from the vibration table, on which the motor is mounted.
8. A horizontal inertial vibration test bench according to claim 1, characterized in that, The installation end includes an installation disk.