Earthquake-proof experiment device for civil structure

Abstract

The utility model discloses an anti-seismic experiment device for a civil structure. Belongs to the field of anti-seismic experiments, and adopts the technical scheme that the anti-seismic experiment device comprises a base, a pair of symmetrical vibration assemblies are arranged at the top end of the base, a shaking assembly is arranged at the top end of each vibration assembly, and a fluctuating assembly is arranged at the top end of each shaking assembly; the vibration assembly comprises a pair of symmetrical positioning blocks, sleeves are fixedly connected to the top ends of the positioning blocks, a transmission shaft and a cam are driven by a motor to rotate, a connecting arm pushes a sliding block to impact an impact block, then vibration is generated, and springs in the sleeves play a role in buffering and resetting; when the earthquake happens, the connecting seat shakes after being impacted, the sliding seat, the connecting piece and the rotating head move along with the connecting seat, the movable plate and the driven plate shake and fluctuate, the protective fence and the guardrail guarantee the experiment safety, the conditions of vibration, shaking, displacement and the like of a civil structure in the earthquake process can be simulated, and effective experiment conditions are provided for studying the earthquake resistance of the civil structure.

Description

Technical Field

[0001] This utility model relates to the field of seismic testing technology, specifically to a seismic testing device for civil structures. Background Technology

[0002] Civil engineering structures are structures composed of natural materials such as soil and wood, or components made of these materials. The response of civil engineering structures under earthquake loads is quite complex. It is necessary to simulate the vibration during an earthquake through seismic tests to observe the deformation, failure mode, and load-bearing capacity of the structure, so as to accurately assess its seismic performance.

[0003] According to Chinese patent application number CN202420804268.X, a seismic testing device for civil structures is provided. This scheme involves installing or building the civil structure on a support mechanism and enclosing the civil structure with a protective mechanism. Then, a vibration mechanism is used to vibrate the support mechanism. However, when an earthquake occurs, in addition to vibration, there will also be swaying, displacement, and undulation. The seismic testing device for civil structures mentioned in the above patent has a single effect, lacks diversity in the simulation process, and the effect of seismic testing is insufficient.

[0004] Therefore, a seismic testing device for civil structures is needed. Summary of the Invention

[0005] This utility model addresses the technical problems existing in the prior art by providing a seismic testing device for civil structures.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A seismic test device for civil structures includes a base, a pair of symmetrical vibration components are provided at the top of the base, a swaying component is provided at the top of the vibration components, and an undulating component is provided at the top of the swaying components; the vibration component includes a pair of symmetrical positioning blocks, a sleeve is fixedly connected to the top of the positioning block, a fixing block is fixedly connected to the inner end of the sleeve, a fixing sleeve is fixedly connected to the inner end of the pair of fixing blocks, an impact block is slidably connected inside the fixing sleeve, and the top of the impact block penetrates the top of the fixing sleeve; the swaying component includes a connecting seat adapted to the impact block, a pair of symmetrical sliding seats are slidably connected to the top of the connecting seat, a connecting piece is fixedly connected to the top of the sliding seat, and a rotating head is rotatably connected to the top of the connecting piece; the undulating component includes a pair of movable plates respectively fixedly connected to the rotating head, and a driven plate is hinged between the pair of movable plates.

[0007] Furthermore, a drive shaft is rotatably connected to the inner end of each pair of positioning blocks, and a cam is fixedly connected to the end of the drive shaft away from the positioning block.

[0008] Furthermore, a motor is fixedly connected to the outer wall of one of the positioning blocks, and the transmission end of the motor passes through the positioning block and is fixedly connected to the transmission shaft.

[0009] Furthermore, the inner ends of the pair of cams are rotatably connected to connecting arms, the top ends of the connecting arms are rotatably connected to sliding blocks, the top ends of the sliding blocks penetrate into the interior of the fixed sleeve, and the sliding blocks are slidably connected to the fixed sleeve.

[0010] Furthermore, a connecting block is fixedly connected inside the sleeve, and a spring is fixedly connected to the top of the connecting block. The top of the spring passes through the top of the sleeve and is fixedly connected to the bottom of the connecting seat.

[0011] Furthermore, a protective fence is fixedly connected to the top of the movable plate.

[0012] Furthermore, a guardrail adapted to a protective fence is fixedly connected to the top of the driven plate.

[0013] The beneficial effects of this utility model are as follows: the motor drives the transmission shaft and cam to rotate, causing the connecting arm to push the sliding block to strike the impact block, thereby generating vibration. The spring in the sleeve plays a buffering and resetting role. After the connecting seat is impacted, it shakes, and the sliding seat, connecting plate and rotating head move accordingly, causing the movable plate and driven plate to shake and undulate. The protective fence and guardrail ensure experimental safety. It can simulate the vibration, shaking and displacement of civil structures during an earthquake, and provide effective experimental conditions for studying the seismic performance of civil structures. Attached Figure Description

[0014] Figure 1 This is a perspective view of the entire utility model;

[0015] Figure 2 This is a three-dimensional view of the entire utility model disassembled.

[0016] Figure 3 This is a three-dimensional exploded view of the vibration component and the shaking component of this utility model;

[0017] Figure 4 This is a structural diagram of the vibration component of this utility model;

[0018] Figure 5 This is a structural diagram of the shaking component of this utility model.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Base, 2. Vibration component, 3. Shaking component, 4. Ebb and flow component, 201. Positioning block, 202. Motor, 203. Drive shaft, 204. Cam, 205. Connecting arm, 206. Sliding block, 207. Sleeve, 208. Connecting block, 209. Spring, 210. Fixing block, 211. Fixing sleeve, 212. Impact block, 301. Connecting seat, 302. Sliding seat, 303. Connecting piece, 304. Rotating head, 401. Movable plate, 402. Driven plate, 403. Protective fence, 404. Guardrail. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0024] Please see Figure 1 -

[0025] Figure 5A seismic testing device for civil structures includes a base 1. A pair of symmetrical vibration components 2 are mounted on the top of the base 1. A swaying component 3 is mounted on the top of each vibration component 2, and an undulating component 4 is mounted on the top of each swaying component 3. Each vibration component 2 includes a pair of symmetrical positioning blocks 201. A sleeve 207 is fixedly connected to the top of each positioning block 201. A fixing block 210 is fixedly connected to the inner end of each sleeve 207. A fixing sleeve 211 is fixedly connected to the inner end of each fixing block 210. The fixing sleeve 211 has an internal sliding connection. There is an impact block 212, the top end of which penetrates the top end of the fixed sleeve 211; the shaking assembly 3 includes a connecting seat 301 adapted to the impact block 212, the top end of the connecting seat 301 is slidably connected to a pair of symmetrical sliding seats 302, the top end of the sliding seats 302 is fixedly connected to a connecting piece 303, and the top end of the connecting piece 303 is rotatably connected to a rotating head 304; the undulating assembly 4 includes a pair of movable plates 401 respectively fixedly connected to the rotating head 304, and a driven plate 402 is hinged between the pair of movable plates 401.

[0026] Vibration is generated by impacting the impact block 212, and the vibration is transmitted to the movable plate 401 and the driven plate 402. At the same time, the impact block 212 and the connecting seat 301 will rise and fall to a certain extent after being impacted. During the rising and falling process, the movable plate 401 will rise and fall, and then the driven plate 402 will rise and fall. This causes the movable plate 401 to drive the driven plate 402 to form a wave-like undulation through the rotating head 304. In addition, when the connecting seat 301 drives the movable plate 401 to rise and fall, the movable plate 401 will undergo a certain degree of displacement due to the non-fixed nature of the sliding seat 302. This can simulate the vibration, shaking and displacement that civil structures may experience during an earthquake.

[0027] A protective fence 403 is fixedly connected to the top of the movable board 401.

[0028] A guardrail 404, which is adapted to the protective fence 403, is fixedly connected to the top of the driven plate 402.

[0029] The inner ends of a pair of positioning blocks 201 are rotatably connected to a drive shaft 203, and the end of the drive shaft 203 away from the positioning block 201 is fixedly connected to a cam 204.

[0030] One of the positioning blocks 201 has a motor 202 fixedly connected to its outer wall. The transmission end of the motor 202 passes through the positioning block 201 and is fixedly connected to the transmission shaft 203.

[0031] A pair of cams 204 are rotatably connected to a connecting arm 205 at their inner ends. A sliding block 206 is rotatably connected to the top end of the connecting arm 205. The top end of the sliding block 206 extends into the interior of the fixed sleeve 211, and the sliding block 206 is slidably connected to the fixed sleeve 211.

[0032] A connecting block 208 is fixedly connected inside the sleeve 207. A spring 209 is fixedly connected to the top of the connecting block 208. The top of the spring 209 passes through the top of the sleeve 207 and is fixedly connected to the bottom of the connecting seat 301.

[0033] In this design, after the motor 202 starts, its transmission end drives the transmission shaft 203 to rotate. The transmission shaft 203 drives the cam 204 to rotate. As the cam 204 rotates, the connecting arm 205 moves up and down under the push of the cam 204. The sliding block 206 at the top of the connecting arm 205 slides up and down within the fixed sleeve 211. When the sliding block 206 moves upward, it will strike the impact block 212, thereby generating vibration. At the same time, the spring 209 in the sleeve 207 plays a role in buffering and resetting. When the impact block 212 is not subjected to impact force, the spring 209 will reset the connecting seat 301 and the impact block 212, preparing for the next impact. Specifically, when the impact block 212 moves upward, it strikes the connecting seat 301, causing the connecting seat 301 to shake. The sliding block at the top of the connecting seat 301... 302 can slide on the connecting seat 301. When the connecting seat 301 shakes, the sliding seat 302 will slide accordingly according to the direction and amplitude of the shaking. The connecting piece 303 and the rotating head 304 will move with the movement of the sliding seat 302, thereby causing the undulating component to shake. The movement of the rotating head 304 causes the movable plate 401 to shake. Since there is a driven plate 402 hinged between the pair of movable plates 401, the shaking of the movable plate 401 will be transmitted to the driven plate 402 through the hinge point, causing the driven plate 402 to produce corresponding undulations and shaking, simulating the undulation of the civil structure under the action of an earthquake. The protective fence 403 and the guardrail 404 play a protective role to prevent the civil structure from falling off the device during the experiment. The pair of vibration components 2 are started in a staggered manner, which can improve the shaking effect.

[0034] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0035] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A seismic testing device for civil structures, characterized in that, The utility model provides a kind of base (1), the top of the base (1) is provided with a pair of symmetrical vibration components (2), the top of the vibration component (2) is provided with a wobble component (3), the top of the wobble component (3) is provided with a ups and downs component (4); The vibration component (2) includes a pair of symmetrical positioning blocks (201), the top of the positioning block (201) is fixedly connected with a sleeve (207), the inner end of the sleeve (207) is fixedly connected with a fixed block (210), a pair of the inner end of the fixed block (210) is fixedly connected with a fixed sleeve (211), the inside of the fixed sleeve (211) is slidably connected with a striking block (212), the top of the striking block (212) penetrates the top of the fixed sleeve (211); The wobble component (3) includes a connecting seat (301) matched with the striking block (212), the top of the connecting seat (301) is slidably connected with a pair of symmetrical sliding seats (302), the top of the sliding seat (302) is fixedly connected with a connecting sheet (303), the top of the connecting sheet (303) is rotatably connected with a rotating head (304); The ups and downs component (4) includes a pair of movable plates (401) fixedly connected with the rotating head (304) respectively, a driven plate (402) is hinged between the pair of movable plates (401).

2. The seismic experiment device for civil structures according to claim 1, wherein The inner end of a pair of the positioning blocks (201) is rotatably connected with a transmission shaft (203), the end, away from the positioning block (201), of the transmission shaft (203) is fixedly connected with a cam (204).

3. The seismic experiment device for civil structures according to claim 2, wherein The outer wall of one of the positioning blocks (201) is fixedly connected with a motor (202), the transmission end of the motor (202) penetrates the positioning block (201) and is fixedly connected with the transmission shaft (203).

4. The seismic experiment device for civil structures according to claim 2, wherein The inner end of a pair of the cams (204) is rotatably connected with a connecting arm (205), the top of the connecting arm (205) is rotatably connected with a sliding block (206), the top of the sliding block (206) penetrates to the inside of the fixed sleeve (211), and the sliding block (206) is slidably connected with the fixed sleeve (211).

5. The seismic experiment device for civil structures according to claim 1, wherein The inside of the sleeve (207) is fixedly connected with a connecting block (208), the top of the connecting block (208) is fixedly connected with a spring (209), the top of the spring (209) penetrates the top of the sleeve (207) and is fixedly connected with the bottom end of the connecting seat (301).

6. The seismic experiment device for civil structures according to claim 1, wherein The top of the movable plate (401) is fixedly connected with a protective fence (403).

7. The seismic experiment device for civil structures according to claim 1, wherein The top of the driven plate (402) is fixedly connected with a guardrail (404) matched with the protective fence (403).

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