CN219573433U - Displacement amplification device and vibration generator - Google Patents

Abstract

The utility model relates to the technical field of vibration instruments, in particular to a displacement amplifying device and a vibration generator. The displacement amplifying device comprises a connecting mounting seat, a working table surface, a guiding linear bearing, a guide pillar, an upper elastic piece and a lower elastic piece, wherein the guide pillar is fixedly arranged on the connecting mounting seat, the guiding linear bearing is sleeved outside the guide pillar and embedded in the working table surface, one end of the upper elastic piece is abutted with the bottom surface of a column cap, the other end of the upper elastic piece is abutted with the top surface of the working table surface, one end of the lower elastic piece is abutted with the ground surface of the working table surface, and the other end of the lower elastic piece is connected with the top surface of the connecting mounting seat. The connecting mounting seat is connected with the moving coil platform of the vibration generator, the working table surface is slidably mounted on the guide post through the guide linear bearing, and the guide post guides the working table surface to run. The working platform realizes suspension balance under the action of the upper elastic piece and the lower elastic piece. Under the action of inertial force, the vibration displacement amplitude of the working table surface can be amplified, and the limit of the maximum displacement of the vibration platform of the old equipment can be solved.

Description

Displacement amplification device and vibration generator

Technical Field

The utility model relates to the technical field of vibration instruments, in particular to a displacement amplifying device and a vibration generator.

Background

The vibration test system is widely used in military and civil projects, is one of the most commonly used test equipment in mechanical environment tests, has a maximum displacement of only 100mm, and can increase the displacement of the test bed through the magnetic circuit, the coil and the guide device, but is difficult to realize for users who purchase conventional displacement systems.

Therefore, a displacement amplifying device and a vibration generator are needed to solve the above problems.

Disclosure of Invention

The utility model aims to provide a displacement amplifying device which can realize the displacement of a working surface of a vibration test bench.

To achieve the purpose, the utility model adopts the following scheme:

the displacement amplifying device comprises a connecting mounting seat, a working table surface, a guide linear bearing, a guide pillar, an upper elastic piece and a lower elastic piece, wherein the guide pillar is fixedly arranged on the connecting mounting seat, the guide pillar comprises a pillar cap and a pillar body, one end of the pillar body is connected with the pillar cap, the other end of the pillar body is connected with the connecting mounting seat, the guide linear bearing is sleeved outside the guide pillar body and embedded in the working table surface, one end of the upper elastic piece is abutted with the bottom surface of the pillar cap, the other end of the upper elastic piece is abutted with the top surface of the working table surface, one end of the lower elastic piece is abutted with the ground surface of the working table surface, and the other end of the lower elastic piece is connected with the top surface of the connecting mounting seat.

The guide linear bearing, the guide post, the upper elastic member and the lower elastic member are provided with two groups, and the two groups of the guide linear bearing, the guide post, the upper elastic member and the lower elastic member are all arranged at intervals.

Illustratively, the upper resilient member is a coil spring.

Illustratively, the lower resilient member is a coil spring.

The displacement amplifying device comprises a first threaded fastening assembly, and the guide post is fixedly connected with the connecting mounting seat through the first threaded fastening assembly.

Illustratively, the first threaded fastener assembly is a bolt-and-nut assembly.

Illustratively, the displacement amplifying device includes a second threaded fastener assembly by which the guide linear bearing is coupled to the work surface.

Illustratively, the second threaded fastener assembly is a screw fastener assembly.

The utility model aims to provide a vibration generator which can realize the displacement of a working table surface of a vibration test table.

To achieve the purpose, the utility model adopts the following scheme:

the vibration generator comprises a moving coil platform and the displacement amplifying device, and the displacement amplifying device is arranged on the moving coil platform.

The displacement amplifying device is illustratively threadably coupled to the moving coil platform.

The beneficial effects of the utility model are as follows:

in the displacement amplifying device provided by the utility model, when the displacement amplifying device is mounted to the vibration generator, the connection mounting seat is connected with the moving coil platform of the vibration generator, and the displacement amplifying device can vibrate along with the vibration of the moving coil platform. The working table surface is slidably mounted on the guide post through a guide linear bearing, the guide post guides the working table surface to run, and the working table surface can vibrate up and down along the guide post. Because the upper elastic piece is arranged between the column cap and the working table surface, the lower elastic piece is arranged between the working table surface and the connecting mounting seat, and the working platform realizes suspension balance under the action of the upper elastic piece and the lower elastic piece. During vibration, under the action of inertia force, the movement amplitude of the working table surface is increased, and a phase difference exists between the working table surface and the moving coil platform, so that the vibration displacement amplitude of the working table surface can be amplified, the limit of the maximum displacement of the vibration platform of the old equipment can be solved, and the requirement of the new equipment is met.

Drawings

Fig. 1 is a schematic structural diagram of a displacement amplifying device provided by the utility model.

In the figure:

100. connecting the mounting seat; 200. a work table; 300. a guide linear bearing; 400. a guide post; 500. an upper elastic member; 600. a lower elastic member; 700. a first threaded fastener assembly; 800. a second threaded fastener assembly.

Detailed Description

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present utility model are shown.

In the present utility model, directional terms, such as "upper", "lower", "left", "right", "inner" and "outer", are used for convenience of understanding and are not to be construed as limiting the scope of the present utility model unless otherwise specified.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The embodiment provides a vibration generator, including moving coil platform and displacement amplification device, displacement amplification device installs on the moving coil platform. Specifically, the displacement amplifying device in this embodiment is in threaded connection with the moving coil platform. As shown in fig. 1, the displacement amplifying device in this embodiment includes a connection mount 100, a table 200, a guide linear bearing 300, a guide post 400, an upper elastic member 500, and a lower elastic member 600. The guide post 400 is fixedly mounted on the connection mount 100. The guide post 400 includes a cap and a column, one end of the column is connected to the cap, and the other end of the column is connected to the connection mount 100. The guide linear bearing 300 is sleeved outside the guide post 400 and is embedded in the working table 200. One end of the upper elastic member 500 is abutted with the bottom surface of the cap, the other end of the upper elastic member 500 is abutted with the top surface of the table top 200, one end of the lower elastic member 600 is abutted with the ground surface of the table top 200, and the other end of the lower elastic member 600 is connected with the top surface of the connection mounting seat 100.

When the displacement amplifying device is mounted to the vibration generator, the connection mount 100 is connected to the moving coil platform of the vibration generator, and the displacement amplifying device can vibrate along with the vibration of the moving coil platform. The table top 200 is slidably mounted on the guide post 400 through the guide linear bearing 300, the operation of the table top 200 is guided by the guide post 400, and the table top 200 can vibrate up and down along the guide post 400. Because the upper elastic member 500 is installed between the cap and the table top 200, the lower elastic member 600 is installed between the table top 200 and the connection mount 100, and the work platform achieves suspension balance under the action of the upper elastic member 500 and the lower elastic member 600. During vibration, under the action of inertia force, the movement amplitude of the workbench 200 is increased, and a phase difference exists between the workbench 200 and the moving coil platform, so that the vibration displacement amplitude of the workbench 200 can be amplified, the limit of the maximum displacement of the vibration platform of the old equipment can be solved, and the requirement of the new equipment can be met.

Further, in this embodiment, two sets of guide linear bearings 300, guide posts 400, upper elastic members 500 and lower elastic members 600 are provided, and the two sets of guide linear bearings 300, guide posts 400, upper elastic members 500 and lower elastic members 600 are all disposed at intervals. The stability of the table top 200 during vibration is improved by providing two sets of guide linear bearings 300, guide posts 400, upper elastic members 500, and lower elastic members 600. Because the two sets of guide linear bearings 300, the guide posts 400, the upper elastic members 500 and the lower elastic members 600 are all arranged at intervals, in the vibration process, the two sets of upper elastic members 500 and the two sets of lower elastic members 600 can act simultaneously to disperse vibration so as to ensure the stability of the working table 200.

Further, the upper elastic member 500 in this embodiment is a coil spring. The lower elastic member 600 is a coil spring. Because the relationship between the acting force and displacement of the coil spring is very sensitive, the deformation range is relatively wide, the energy utilization rate is high, the energy can be quickly absorbed and released in the vibration process, and the coil spring is adopted as the upper elastic member 500 and the lower elastic member 600, so that the displacement amplitude of the workbench surface 200 can be ensured to be increased. Further, the rigidity of the upper elastic member 500 and the lower elastic member 600 may be the same or different, and a coil spring having a corresponding rigidity may be used according to the increasing requirement of the vibration amplitude of the table top 200.

Further, the displacement amplifying device in this embodiment includes a first screw fastening assembly 700, and the guide post 400 is fixedly connected to the connection mount 100 through the first screw fastening assembly 700. By adopting the first screw fastening assembly 700 to install the guide post 400, on the one hand, the installation efficiency of the guide post 400 can be improved, and on the other hand, the connection fastening degree between the guide post 400 and the connection installation seat 100 can be improved.

Specifically, the first screw tightening assembly 700 in this embodiment is a bolt-and-nut assembly.

Further, the displacement amplifying device in the present embodiment includes a second screw fastening assembly 800, and the guide linear bearing 300 is connected to the table top 200 through the second screw fastening assembly 800. By adopting the second screw fastening assembly 800 to install the guide linear bearing 300, on the one hand, the installation efficiency of the guide linear bearing 300 can be improved, and on the other hand, the connection fastening degree between the guide linear bearing 300 and the table top 200 can be improved.

Specifically, the second screw fastening assembly 800 in the present embodiment is a screw fastening assembly.

It is to be understood that the above-described embodiments of the present utility model are provided by way of illustration only and not limitation of the embodiments thereof. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The displacement amplifying device is characterized by comprising a connecting mounting seat (100), a working table top (200), a guiding linear bearing (300), a guide pillar (400), an upper elastic piece (500) and a lower elastic piece (600), wherein the guide pillar (400) is fixedly installed on the connecting mounting seat (100), the guide pillar (400) comprises a pillar cap and a pillar body, one end of the pillar body is connected with the pillar cap, the other end of the pillar body is connected with the connecting mounting seat (100), the guiding linear bearing (300) is sleeved outside the guide pillar (400) and is embedded in the working table top (200), one end of the upper elastic piece (500) is abutted to the bottom surface of the pillar cap, the other end of the upper elastic piece (500) is abutted to the top surface of the working table top (200), one end of the lower elastic piece (600) is abutted to the ground surface of the working table top (200), and the other end of the lower elastic piece (600) is connected with the top surface of the connecting mounting seat (100).

2. The displacement amplifying device according to claim 1, wherein the guide linear bearing (300), the guide post (400), the upper elastic member (500) and the lower elastic member (600) are provided with two groups, and the guide linear bearing (300), the guide post (400), the upper elastic member (500) and the lower elastic member (600) are provided at intervals.

3. The displacement amplifying device according to claim 1, wherein the upper elastic member (500) is a coil spring.

4. The displacement amplifying device according to claim 1, wherein the lower elastic member (600) is a coil spring.

5. The displacement amplifying device according to claim 1, comprising a first threaded fastening assembly (700), wherein the guide post (400) is fixedly connected to the connection mount (100) by means of the first threaded fastening assembly (700).

6. The displacement amplifying device according to claim 5, wherein the first threaded fastening assembly (700) is a bolt-and-nut assembly.

7. The displacement amplifying device according to claim 1, comprising a second threaded fastening assembly (800), wherein the guiding linear bearing (300) is connected to the work surface (200) by means of the second threaded fastening assembly (800).

8. The displacement amplifying device according to claim 7, wherein the second threaded fastening assembly (800) is a screw fastening assembly.

9. Vibration generator, characterized by comprising a moving coil platform and a displacement amplifying device according to any of claims 1-8, said displacement amplifying device being mounted on said moving coil platform.

10. The vibration generator of claim 9, wherein the displacement amplifying means is threadedly coupled to the moving coil platform.