Anti-ground interference isolation device for digital electrodynamic vibration test system

Abstract

The present invention discloses an anti-ground interference isolation device for a digital electric vibration test system, comprising a base, third wedge blocks provided on both sides of the top of the base, four sets of placement slots evenly provided on one end of the front of the base, rubber pads provided at the bottom of the placement slots, and transmission rods slidably provided at one end of both sides of the placement slots. The present invention can isolate the working vibration device by providing an isolation mechanism on the outside of the vibration device, thereby reducing the propagation of noise generated by the vibration device cover when it is working. At the same time, the noise generated will be transmitted to the inside of the silencer slot in advance, and will continuously rebound and propagate inside the silencer slot, consuming the energy of the sound transmission, greatly reducing the decibels of the noise. At the same time, the mutual cooperation between the sound insulation board and the polyester fiber layer can further reduce the propagation of sound, greatly ensuring a relatively quiet environment for the experimenter and reducing the discomfort of the worker.

Description

Technical Field

[0001] The invention relates to the technical field of electric vibration test systems, in particular to an anti-ground interference isolation device for a digital electric vibration test system. Background Art

[0002] The purpose of vibration testing is to verify that the designed product can withstand external or self-generated vibrations without being damaged, and can perform its performance and reach its predetermined lifespan. The vibration test system is a key device that simulates the mechanical environment of the test object during actual operation. It has been widely used in railway locomotives, automobiles, ships, aerospace, bridge construction, electronic communications and other fields. Currently, there are three main types of equipment used for vibration testing: electric, hydraulic and mechanical vibration tables. Among them, electric vibration tables have the characteristics of a wide operating frequency range, a wide control dynamic range, a variety of waveforms, good acceleration waveform distortion, and a large maximum acceleration, and are therefore widely used.

[0003] The current electrodynamic vibration test system has certain shortcomings when used

[0004] 1. When conducting experimental testing on the electric vibration test system, the electric vibration device works in an open area and produces violent vibrations, applying vibrations in different directions to the objects to be tested. However, the noise generated during the vibration will spread everywhere. The strong noise will cause discomfort to the experimenters and affect work efficiency.

[0005] 2. When the device is working, the vibration will inevitably be transmitted to the device itself, which will cause or accelerate the damage of the internal components of the device. At the same time, the strong vibration will be transmitted to the ground, and the device will vibrate randomly on the ground, causing damage to the ground.

[0006] 3. The wires on the device will move relative to the device due to the vibration of the device itself, which can easily cause the protective layer on the outside of the wire to crack. At the same time, the connection between the wire and the device can easily become loose, resulting in poor contact, which can cause the working device to unexpectedly lose power and cause data errors in the experiment. Summary of the Invention

[0007] The object of the present invention is to provide an anti-ground interference isolation device for a digital electrodynamic vibration test system, so as to solve the related problems raised in the above background technology.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solution: an anti-ground interference isolation device for a digital electric vibration test system, comprising a base, third wedge blocks are provided on both sides of the top of the base, four groups of placement grooves are evenly provided on the front end of the base, a rubber pad is provided at the bottom of the placement groove, a transmission rod is slidably provided on one end of both sides of the placement groove, an arc-shaped extrusion plate is provided on the side where the two groups of transmission rods are close to each other, and a fourth wedge block is provided on the side where the two groups of transmission rods are away from each other, a support plate is provided at the middle position of one end of the top back of the base, a servo motor is provided at the top of the front end of the support plate, a threaded rod is provided at the output end of the servo motor, a connecting plate is threadedly connected to the outer side of the threaded rod, an isolation mechanism is provided at one end of the front end of the connecting plate, a support slide groove is provided at the middle position of the front end of the support plate, and the back end of the connecting plate extends to the inside of the support slide groove for sliding adaptation.

[0009] Preferably, the isolation mechanism includes a metal shell, a polyester fiber layer, a silencer groove, a silencer layer, a sound insulation board and a groove. The metal shell is located at the front end of the connecting plate. A polyester fiber layer is provided on the inner side of the metal shell. A sound insulation board is provided on the inner side of the polyester fiber layer. A sound insulation layer is provided on the inner side of the sound insulation board. Multiple groups of silencer grooves are evenly arranged on the inner side of the sound insulation layer. Four groups of grooves are provided at the bottom of the front end of the metal shell. Buffer mechanisms are slidably provided on both sides and in the middle of both ends of the metal shell.

[0010] Preferably, the buffer mechanism includes a spring telescopic rod, a mounting plate, a contact plate, a clamping plate, a first wedge block, a limiting telescopic rod, a second wedge block, a driving rod, a fixing plate and a shock-absorbing damping rod, the four groups of spring telescopic rods and two groups are located at the middle positions on both sides of the metal shell, the limiting telescopic rod is provided with two groups, respectively located at the middle positions of the two ends of the metal shell, the two groups of spring telescopic rods are provided with a first wedge block on the side away from each other, the two groups of spring telescopic rods are provided with a clamping plate on the side close to each other, the two groups of clamping plates are provided with a driving rod at both ends of the side away from each other, the two groups of limiting telescopic rods are provided with a mounting plate at one end close to each other, the two groups of mounting plates, the two groups of mounting plates, the two groups of mounting plates are provided with a second wedge block on both sides of the end away from each other, the two groups of fixing plates are provided at the middle position of the side away from each other, the fixing plate is provided with a shock-absorbing damping rod inside, and one end of the two groups of shock-absorbing damping rods is provided with a contact plate.

[0011] Preferably, buffer holes are opened on both sides of the interior of the mounting plate, and the shock-absorbing damping rod is located inside the buffer holes.

[0012] Preferably, the spring telescopic rod consists of a spring sleeve, a buffer spring and a shock-absorbing telescopic rod, and the buffer spring is located inside the spring sleeve, and the shock-absorbing telescopic rod slides inside the spring sleeve and is fixedly connected to the buffer spring.

[0013] Preferably, the rubber pad and the groove are adapted to each other, and the fourth wedge block is located inside the groove.

[0014] Preferably, a threaded hole is provided inside the connecting plate, and the threaded rods pass through the threaded hole and are connected to each other through threads.

[0015] Preferably, limit slides are provided at the top and bottom of the spring telescopic rod, and the limit slides are located at the top and bottom of the spring sleeve.

[0016] Preferably, a motor seat is provided on the top of one end of the front side of the support plate, and the servo motor is connected to the motor seat by bolts.

[0017] Preferably, the driving rod is L-shaped, and one side of the driving rod is inclined.

[0018] Compared with the prior art, the present invention provides an anti-ground interference isolation device for a digital electrodynamic vibration test system, which has the following beneficial effects:

[0019] 1. The present invention is capable of isolating a working vibration device by arranging an isolation mechanism on the outside of the vibration device, thereby reducing the propagation of noise generated when the vibration device cover is working. At the same time, the noise generated will be transmitted to the inside of the silencer groove in advance, and will continuously rebound and propagate inside the silencer groove, consuming the energy of the sound transmission, greatly reducing the decibels of noise. At the same time, the mutual cooperation between the sound insulation board and the polyester fiber layer can further reduce the propagation of sound, greatly ensuring that the environment for the experimenters is relatively quiet and causing less discomfort to the staff.

[0020] 2. The present invention utilizes a clamping plate to clamp both sides of the vibration device and two groups of contact plates to clamp both ends of the vibration device at the same time, which can ensure that the vibration inside the vibration device is transmitted and eliminated. When the vibration device is working, the front and rear and left and right vibrations generated are transmitted to the contact plate and the clamping plate respectively, which will push the clamping plate to move left and right continuously, driving the shock-absorbing telescopic rod to move back and forth horizontally inside the spring sleeve continuously, squeezing the buffer spring, and the buffer spring will eliminate the impact force. When the vibration is transmitted to the contact plate, the mutual cooperation of the shock-absorbing damping rods can further eliminate the vibration in the front and rear directions, thereby ensuring the stability of the device and reducing the damage to the device caused by vibration.

[0021] 3. The present invention, when the isolation mechanism is buckled on the outside of the device, the groove and the two groups of fourth wedge blocks contact each other, pushing the oblique sides of the two groups of fourth wedge blocks closer to each other, and driving the two groups of arc-shaped extrusion plates closer to each other through the transmission rod. The two groups of arc-shaped extrusion plates can clamp the wires placed inside the groove to ensure that the wires and the device will not loosen, and can effectively prevent the wires from being separated from the device due to external forces. At the same time, the wires are fixed to the base to ensure that the wires are always firmly connected to the device and will not be separated from the device, ensuring that the device will not be accidentally powered off during operation, thereby avoiding affecting the smooth progress of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front cross-sectional view of the present invention;

[0023] Figure 2 A top sectional view of the base of the present invention;

[0024] Figure 3 A top view of the placement slot of the present invention;

[0025] Figure 4 A top sectional view of the metal housing of the present invention;

[0026] Figure 5 This is a front view of the metal housing of the present invention;

[0027] Figure 6 This is a top sectional view of the isolation mechanism of the present invention.

[0028] In the figure: 1. base; 2. isolation mechanism; 201. metal shell; 202. polyester fiber layer; 203. silencer groove; 204. silencer layer; 205. sound insulation board; 206. groove; 3. buffer mechanism; 301. spring telescopic rod; 302. mounting plate; 303. contact plate; 304. clamping plate; 305. first wedge block; 306. position limiting telescopic rod; 307. second wedge block; 308. driving rod; 309. fixing plate; 310. shock-absorbing damping rod; 4. support slide; 5. support plate; 6. threaded rod; 7. third wedge block; 8. servo motor; 9. connecting plate; 10. placement groove; 11. transmission rod; 12. arc-shaped extrusion plate; 13. fourth wedge block; 14. rubber pad. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-6 The present invention provides a technical solution: an anti-ground interference isolation device for a digital electric vibration test system, comprising a base 1, third wedge blocks 7 are provided on both sides of the top of the base 1, four groups of placement grooves 10 are evenly provided on one end of the front side of the base 1, and a rubber pad 14 is provided at the bottom inside the placement groove 10. Transmission rods 11 are slidably provided at one end of both sides of the placement groove 10, an arc-shaped extrusion plate 12 is provided on the side where the two groups of transmission rods 11 are close to each other, and a fourth wedge block 13 is provided on the side where the two groups of transmission rods 11 are away from each other. A support plate 5 is provided at the middle position of one end of the top back side of the base 1, a servo motor 8 is provided at the top of the front end of the support plate 5, a threaded rod 6 is provided at the output end of the servo motor 8, a connecting plate 9 is threadedly connected to the outer side of the threaded rod 6, an isolation mechanism 2 is provided at one end of the connecting plate 9, a support slide 4 is provided at the middle position of one end of the front side of the support plate 5, and the back end of the connecting plate 9 extends to the inside of the support slide 4 for sliding adaptation.

[0031] As a preferred solution of this embodiment: the isolation mechanism 2 includes a metal shell 201, a polyester fiber layer 202, a silencer groove 203, a silencer layer 204, a sound insulation board 205 and a groove 206. The metal shell 201 is located at the front end of the connecting plate 9. The polyester fiber layer 202 is provided on the inner side of the metal shell 201, and the sound insulation board 205 is provided on the inner side of the polyester fiber layer 202. The sound insulation board 205 is provided on the inner side of the sound insulation board 205. A sound insulation layer 204 is provided on the inner side of the sound insulation board 205. Multiple groups of silencer grooves 203 are evenly provided on the inner side of the sound insulation layer 204. Four groups of grooves 206 are provided at the bottom of the front end of the metal shell 201. Buffer mechanisms 3 are slidably provided on both sides and the middle position of the two ends of the metal shell 201, which can isolate the vibration device, reduce noise and block electromagnetic waves.

[0032] As a preferred solution of this embodiment: the buffer mechanism 3 includes a spring telescopic rod 301, a mounting plate 302, a contact plate 303, a clamping plate 304, a first wedge block 305, a limiting telescopic rod 306, a second wedge block 307, a driving rod 308, a fixing plate 309 and a shock-absorbing damping rod 310, the four groups of spring telescopic rods 301 are two groups located at the middle positions on both sides of the metal shell 201, the limiting telescopic rods 306 are provided with two groups respectively located at the middle positions of the two ends of the metal shell 201, the two groups of spring telescopic rods 301 are provided with a first wedge block 305 on the side away from each other, and the two groups of spring telescopic rods 301 are mutually A clamping plate 304 is provided on the close side, and driving rods 308 are provided at both ends of the two sets of clamping plates 304 on the side away from each other. A mounting plate 302 is provided on the end close to each other of the two sets of limiting telescopic rods 306, and second wedge blocks 307 are provided on both sides of the two sets of mounting plates 302 and the two sets of mounting plates 302 on the ends away from each other. Two sets of fixing plates 309 are provided at the middle position of the side away from each other of the two sets of mounting plates 302. Shock-absorbing damping rods 310 are provided inside the fixing plates 309, and contact plates 303 are provided at one end of the two sets of shock-absorbing damping rods 310, which can buffer and reduce shock to the vibration device to ensure the life of the device.

[0033] As a preferred solution of this embodiment: buffer holes are opened on both sides of the interior of the mounting plate 302, and the shock-absorbing damping rod 310 is located inside the buffer holes, so that the shock-absorbing damping rod 310 can work smoothly.

[0034] As a preferred solution of this embodiment: the spring telescopic rod 301 consists of a spring sleeve, a buffer spring and a shock-absorbing telescopic rod, and the buffer spring is located inside the spring sleeve, and the shock-absorbing telescopic rod slides inside the spring sleeve and is fixedly connected to the buffer spring, which can eliminate vibration.

[0035] As a preferred solution of this embodiment, the rubber pad 14 and the groove 206 are adapted to each other, and the fourth wedge block 13 is located inside the groove 206. This allows the fourth wedge blocks 13 to move closer to each other.

[0036] As a preferred solution of this embodiment, a threaded hole is provided inside the connecting plate 9, and the threaded rods 6 pass through the threaded hole and are connected to each other by threads, so as to drive the connecting plate 9 to move up and down.

[0037] As a preferred solution of this embodiment: limit slides are set at the top and bottom of the spring telescopic rod 301, and the limit slides are located at the top and bottom of the spring sleeve to prevent the spring telescopic rod 301 from rotating during work, causing subsequent work to proceed normally.

[0038] As a preferred solution of this embodiment: a motor seat is provided on the top of one end of the front side of the support plate 5 , and the servo motor 8 is connected to the motor seat by bolts, thereby ensuring the stable operation of the servo motor 8 .

[0039] As a preferred solution of this embodiment, the driving rod 308 is L-shaped, and one side of the driving rod 308 is inclined, so as to facilitate the movement of the second wedge block 307.

[0040] Example 1, as Figure 4-5 As shown, when the vibration device is working, the front-back and left-right vibrations generated are transmitted to the contact plate 303 and the clamping plate 304 respectively, which will push the clamping plate 304 to move left and right continuously, driving the shock-absorbing telescopic rod to move back and forth horizontally inside the spring sleeve continuously, squeezing the buffer spring, and the buffer spring will eliminate the impact force. When the vibration is transmitted to the contact plate 303, the contact plate 303 moves back and forth, and the contact plate 303 squeezes the shock-absorbing damping rod 310, and the shock-absorbing damping rod 310 will be compressed to eliminate the vibration. The energy generated by the movement is eliminated. At the same time, the movement of the clamping plate 304 will be driven by the driving rod 308 and the cooperation of the second wedge block 307, so that the mounting plate 302 moves. The mounting plate 302 drives the fixing plate 309 to squeeze the shock-absorbing damping rod 310, so that part of the force is transferred to the shock-absorbing damping rod 310, further eliminating the force of the vibration. Through the mutual cooperation of the shock-absorbing damping rod 310, the vibration in the front and rear directions can be further eliminated, thereby ensuring the stability of the device and reducing the damage to the device caused by vibration.

[0041] Example 2, as Figure 4-5 As shown, the isolation mechanism 2 can isolate the working vibration device and reduce the noise propagation generated when the vibration device cover is working. At the same time, the noise generated will be transmitted to the inside of the silencer groove 203 in advance, and will continuously rebound and propagate inside the silencer groove 203, consuming the energy of the sound transmission and greatly reducing the decibels of the noise. At the same time, through the mutual cooperation between the sound insulation board 205 and the polyester fiber layer 202, the sound propagation can be further reduced, which greatly ensures that the environment of the experimenters is relatively quiet and reduces the discomfort of the staff. The metal shell 201 made of metal material can isolate the electromagnetic ripples generated by the ground wire.

[0042] Working principle: When using the device, first place the wire on the device inside the placement groove 10 and between the two groups of arc-shaped extrusion plates 12. At this time, the two groups of arc-shaped extrusion plates 12 are away from each other and do not contact the wires, and the firmness of the connection between the wires and the device is checked. At this time, turn on the servo motor 8 to drive the threaded rod 6 to rotate. The threaded rod 6 drives the connecting plate 9 to move through the action of the thread, so that the connecting plate 9 moves stably inside the support slide 4, driving the metal shell 201 to move closer to the outside of the device. At the same time, the groove 206 moves downward with the metal shell 201 and approaches the placement groove 10. When the groove 206 approaches the placement groove 10 and contacts the oblique side of the fourth wedge block 13, the two sides of the groove 206 push the two groups of fourth wedge blocks 13 closer to each other, driving the transmission rod 11 and the arc-shaped extrusion plate 12 closer to each other, so that the two groups of arc-shaped extrusion plates 12 firmly clamp and fix the wires, and then the metal shell 201 falls tightly on the top of the base 1, tightly sealing and isolating the device.

[0043] At the same time, when the metal shell 201 moves downward, the spring telescopic rod 301 and the first wedge block 305 will move downward at the same time. The hypotenuse of the first wedge block 305 will contact and slide with the hypotenuse of the third wedge block 7 in advance. Since the third wedge block 7 is fixed, the two sets of first wedge blocks 305 will move closer to each other, pushing the spring telescopic rod 301 and the clamping plate 304 closer to each other. When the metal shell 201 moves to the bottom, the clamping plate 304 will firmly contact and squeeze both sides of the vibration device.

[0044] At the same time, the two sets of clamping plates 304 approach each other, driving the two sets of driving rods 308 to approach each other. One side of the two sets of driving rods 308 contacts and slides with the oblique sides of the second wedge blocks 307, causing the two sets of second wedge blocks 307 to approach the center of the metal shell 201, driving the shock-absorbing damping rod 310 and the contact plate 303 to approach the outside of the device and squeeze them tightly.

[0045] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. An anti-ground interference isolation device for a digital electrodynamic vibration test system, comprising a base (1), characterized in that: The two sides of the top of the base (1) are provided with third wedge blocks (7), one end of the front of the base (1) is evenly provided with four groups of placement grooves (10), the bottom of the placement groove (10) is provided with a rubber pad (14), one end of both sides of the placement groove (10) is slidably provided with a transmission rod (11), the side where the two groups of transmission rods (11) are close to each other is provided with an arc-shaped extrusion plate (12), and the side where the two groups of transmission rods (11) are away from each other is provided with a fourth wedge block (13), and the back of the top of the base (1) is provided with a plurality of rubber pads (14). A support plate (5) is provided at the middle position of one end of the surface, a servo motor (8) is provided at the top of one end of the front side of the support plate (5), a threaded rod (6) is provided at the output end of the servo motor (8), the outer side of the threaded rod (6) is threadedly connected to a connecting plate (9), an isolation mechanism (2) is provided at one end of the front side of the connecting plate (9), a support chute (4) is provided at the middle position of one end of the front side of the support plate (5), and the back side of the connecting plate (9) extends to the inside of the support chute (4) for sliding adaptation. The isolation mechanism (2) comprises a metal shell (201), a polyester fiber layer (202), a sound-absorbing groove (203), a sound-absorbing layer (204), a sound-isolating board (205) and a groove (206); the metal shell (201) is located at one end of the front face of the connecting plate (9); a polyester fiber layer (202) is provided on the inner side of the metal shell (201); a sound-isolating board (205) is provided on the inner side of the polyester fiber layer (202); a sound-isolating board (205) is provided on the inner side of the sound-isolating board (205); a sound-absorbing layer (204) is provided on the inner side of the sound-isolating board (205); a plurality of groups of sound-absorbing grooves (203) are uniformly provided on the inner side of the sound-absorbing layer (204); four groups of grooves (206) are provided at the bottom of one end of the front face of the metal shell (201); a buffer mechanism (3) is slidably provided at the middle position of both sides and both ends of the metal shell (201); The buffer mechanism (3) comprises a spring telescopic rod (301), a mounting plate (302), a contact plate (303), a clamping plate (304), a first wedge block (305), a position-limiting telescopic rod (306), a second wedge block (307), a driving rod (308), a fixing plate (309) and a shock-absorbing damping rod (310). The four groups of spring telescopic rods (301) are arranged in two groups at the middle positions of both sides of the metal shell (201). The position-limiting telescopic rods (306) are arranged in two groups at the middle positions of both ends of the metal shell (201). The first wedge block (305) is arranged on the side away from each other of the two groups of spring telescopic rods (301). A clamping plate (304) is provided on the side where the rods (301) are close to each other, and driving rods (308) are provided at both ends of the two groups of clamping plates (304) away from each other. A mounting plate (302) is provided on the end where the two groups of limiting telescopic rods (306) are close to each other, and second wedge blocks (307) are provided on both sides of the two groups of mounting plates (302) and the ends away from each other. Two groups of fixing plates (309) are provided at the middle position of the side where the two groups of mounting plates (302) are away from each other, and a shock-absorbing damping rod (310) is provided inside the fixing plate (309), and a contact plate (303) is provided at one end of the two groups of shock-absorbing damping rods (310).

2. The anti-ground interference isolation device for a digital electrodynamic vibration test system according to claim 1, characterized in that: Buffer holes are provided on both sides of the interior of the mounting plate (302), and the shock-absorbing damping rod (310) is located inside the buffer holes.

3. The anti-ground interference isolation device for a digital electrodynamic vibration test system according to claim 1, characterized in that: The spring telescopic rod (301) is composed of a spring sleeve, a buffer spring and a shock-absorbing telescopic rod, wherein the buffer spring is located inside the spring sleeve, and the shock-absorbing telescopic rod slides inside the spring sleeve and is fixedly connected to the buffer spring.

4. The anti-ground interference isolation device for a digital electrodynamic vibration test system according to claim 1, characterized in that: The rubber pad (14) and the groove (206) are adapted to each other, and the fourth wedge block (13) is located inside the groove (206).

5. The anti-ground interference isolation device for a digital electrodynamic vibration test system according to claim 1, characterized in that: A threaded hole is provided inside the connecting plate (9), and the threaded rods (6) pass through the threaded hole and are connected to each other via threads.

6. The anti-ground interference isolation device for a digital electrodynamic vibration test system according to claim 3, characterized in that: The top and bottom of the spring telescopic rod (301) are provided with limiting slide bars, and the limiting slide bars are located at the top and bottom of the spring sleeve.

7. The anti-ground interference isolation device for a digital electrodynamic vibration test system according to claim 1, characterized in that: A motor seat is provided at the top of one front end of the support plate (5), and the servo motor (8) is connected to the motor seat via bolts.

8. The anti-ground interference isolation device for a digital electrodynamic vibration test system according to claim 1, characterized in that: The driving rod (308) is L-shaped, and one side of the driving rod (308) is inclined.

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