A bellows vibration isolation performance test device

Abstract

The utility model belongs to corrugated pipe performance test equipment technical field, specifically speaking is a kind of corrugated pipe vibration isolation performance test device, including bearing station and workstation, the surface middle part of bearing station is provided with vibration subassembly, and vibration subassembly includes the spring of fixed mounting in the surface middle part of bearing station, the top of spring is fixedly connected with connecting column, the top of connecting column is fixedly connected with rack, and the surface of bearing station is fixedly connected with support frame, and one side of support frame is provided with motor, and the output of motor is provided with threaded rod, and the both ends of threaded rod are all equipped with moving block, and the rotatable connection of two moving blocks has rotary column, and the surface of rotary column is equipped with a plurality of gear, and the synchronous movement of two moving blocks is made by threaded rod rotation, and then rotary column moves, the selective engagement of the gear of the surface of rotary column different number of teeth and rack is realized, and the vertical movement of rack is converted by gear rotary motion, and different frequency controllable vibration can be generated, satisfy the vibration isolation performance test demand of corrugated pipe different use scene.

Description

Technical Field

[0001] This utility model belongs to the technical field of corrugated pipe performance testing equipment, specifically a corrugated pipe vibration isolation performance testing device. Background Technology

[0002] A bellows is a tubular elastic element with a periodic corrugated structure, usually made of materials such as metal, plastic, and rubber. Its core feature is that through the corrugated tube wall design, it has good axial, lateral, or angular expansion and contraction capabilities. It can achieve displacement compensation, pressure buffering, or vibration isolation and noise reduction within a certain range. It is widely used in fluid transportation, mechanical connection, vibration control and other scenarios. Bellows need to undergo vibration isolation performance testing, which is essentially to ensure that it can stably perform its core function of "vibration isolation" in practical applications, and avoid equipment failure, safety risks or performance failure caused by substandard vibration isolation performance.

[0003] Currently, most existing corrugated pipe vibration isolation test devices output vibration at a fixed frequency, which can only test the vibration isolation performance under a single working condition. However, in practical applications, corrugated pipes need to cope with vibration environments of different frequencies. Fixed frequency testing cannot comprehensively evaluate product performance and is prone to causing the vibration isolation effect to fail to meet the standards in actual use. Therefore, a corrugated pipe vibration isolation performance test device is proposed to address the above problems. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology and solve at least one of the technical problems mentioned in the background technology, this utility model proposes a test device for the vibration isolation performance of a bellows.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The corrugated pipe vibration isolation performance test device of this utility model includes a support platform and a worktable. A display screen is installed on one side of the surface of the worktable. Support rods are provided at the four corners of the surface of the support platform. Threaded grooves are opened on the side of the surface of the support platform near the support rods. Support components are provided in the threaded grooves. Clamping components are provided on the surface of the worktable. Vibration components are provided in the middle of the surface of the support platform. The vibration assembly includes a spring fixedly installed in the middle of the surface of the support platform. A connecting column is fixedly connected to the top of the spring, and a rack is fixedly connected to the top of the connecting column. A support frame is fixedly connected to the surface of the support platform. The support frames are symmetrically arranged. A motor is provided on one side of the support frame. A threaded rod is provided at the output end of the motor. Movable blocks are sleeved at both ends of the threaded rod. A rotating column is rotatably connected between the two moving blocks. Several gears are sleeved on the surface of the rotating column.

[0006] Preferably, the number of teeth of the plurality of gears is different, the gears mesh with the rack, and the top of the rack corresponds to the bottom of the worktable.

[0007] Preferably, the clamping assembly includes fixed blocks fixedly installed at both ends of the workbench surface. Each fixed block has a rotating shaft at one of its four corners. A U-shaped frame is provided between two rotating shafts on the same side. A fixed rod is provided between two U-shaped frames. The fixed rod is sleeved on the rotating shaft surface. Each end of the fixed rod has a sliding groove for the rotating shaft to move. A connector is provided at the end of each U-shaped frame away from the fixed rod. A clamping ring is provided on one side of the connector. Cylinders are provided at both ends of the workbench surface. The output ends of the two cylinders are connected to the fixed rod.

[0008] Preferably, rubber pads are provided on the opposite surfaces of the two clamping rings.

[0009] Preferably, a slide rail is fixedly connected to the center of the bottom surface of the workbench, and a slider is slidably connected to the surface of the slide rail, and the slider is fixedly connected to the rack.

[0010] Preferably, the support assembly includes a threaded post installed in a threaded groove, and a suction cup is fixed to the bottom of the threaded post.

[0011] The beneficial effects of this utility model are: This invention provides a test device for the vibration isolation performance of bellows. The motor output drives the threaded rod to rotate, causing the moving blocks at both ends of the threaded rod to move synchronously in opposite directions, thereby driving the rotating column to move. This achieves selective meshing between gears and racks with different numbers of teeth on the surface of the rotating column. The rotational motion of the gears is converted into the vertical motion of the rack. Combined with the rebound effect of the spring connected to the bottom of the rack through the connecting column, the rack impacts the worktable, generating controllable vibrations of different frequencies. This simulates the vibration environment under different working conditions and meets the vibration isolation performance testing requirements of bellows in different application scenarios. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a perspective view of the present invention; Figure 2 This is a structural diagram of the vibration assembly in this utility model; Figure 3 This is a sectional view of the present invention.

[0013] Legend: 1. Support platform; 101. Support rod; 2. Workbench; 201. Spring; 202. Connecting column; 203. Rack; 204. Support frame; 205. Motor; 206. Threaded rod; 207. Moving block; 208. Rotating column; 301. Gear; 302. Slide rail; 303. Slider; 4. Fixed block; 401. Fixed rod; 402. U-shaped frame; 403. Connector; 404. Clamping ring; 5. Threaded column; 501. Suction cup. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0015] Specific implementation examples are given below.

[0016] Please see Figures 1-3 This utility model provides a test device for the vibration isolation performance of a bellows, including a support platform 1 and a workbench 2. A display screen is installed on one side of the surface of the workbench 2. The display screen can collect and display key data in real time, such as the vibration frequency of the vibration component, the actual vibration amplitude of the workbench 2, and the vibration response of the bellows. Sensors can be installed on the surface of the bellows. Support rods 101 are provided at the four corners of the surface of the support platform 1. The top of the support rods 101 is fixedly connected to the workbench 2. Threaded grooves are opened on the side of the surface of the support platform 1 near the support rods 101. Support components are provided in the threaded grooves. Clamping components are provided on the surface of the workbench 2 to firmly fix the bellows. A vibration component is provided in the middle of the surface of the support platform 1. The vibration component realizes the controllable vibration of the workbench 2 to simulate the vibration environment under different working conditions. The vibration assembly includes a spring 201 fixedly installed in the middle of the surface of the support platform 1. A connecting post 202 is fixedly connected to the top of the spring 201, and a rack 203 is fixedly connected to the top of the connecting post 202. The bottom of the rack 203 is connected to the spring 201 through the connecting post 202. The spring 201 can rebound the rack 203. The top of the rack 203 corresponds to the bottom of the worktable 2, so that the rebounding rack 203 impacts the worktable 2 and generates vibration. A support frame 204 is fixedly connected to the surface of the support platform 1. The support frame 204 is symmetrically arranged. A motor 205 is provided on one side of the support frame 204. A threaded rod 206 is provided at the output end of the motor 205. The output end of the motor 205 drives the threaded rod 206 to rotate. Moving blocks 207 are sleeved at both ends of the threaded rod 206. 207 moves synchronously in opposite directions or synchronously in opposite directions along the threaded rod 206 due to the threaded transmission. A rotating column 208 is rotatably connected between the two moving blocks 207. The movement of the moving blocks 207 can simultaneously drive the movement of the rotating column 208. Several gears 301 are sleeved on the surface of the rotating column 208. The number of teeth of the gears 301 is different. The gears 301 with different numbers of teeth on the surface of the rotating column 208 move with the rotating column 208. The gears 301 mesh with the rack 203. During the movement, any gear 301 can be selected to mesh with the rack 203. After the gears 301 mesh with the rack 203, the rotational motion of the gears 301 is converted into the vertical motion of the rack 203. Since the gears 301 with different numbers of teeth have different transmission ratios, vertical vibrations of different frequencies can be generated to achieve precise adjustment of multi-frequency vibrations.

[0017] Furthermore, such as Figure 1 and Figure 3As shown, the clamping assembly includes fixed blocks 4 fixedly installed at both ends of the surface of the worktable 2. The fixed blocks 4 are support devices for the clamping assembly. Rotary shafts are provided at the four corners of the surface of the fixed blocks 4. A U-shaped frame 402 is provided between two rotating shafts on the same side. A fixing rod 401 is provided between the two U-shaped frames 402. The fixing rod 401 is sleeved on the surface of the rotating shafts. Sliding grooves for the rotating shafts are provided at both ends of the fixing rod 401. A connecting piece 403 is provided at the end of each U-shaped frame 402 away from the fixing rod 401. A clamping ring 404 is provided on one side of the connecting piece 403. Cylinders are provided at both ends of the surface of the worktable 2. The output ends of the two cylinders are connected to the fixing rod 401. Connect and start the cylinders at both ends of the workbench 2. The output end of the cylinder pushes the fixed rod 401 to move horizontally. The two ends of the fixed rod 401 are linked with the U-shaped frame 402 through the sliding groove and rotating shaft structure. When the fixed rod 401 moves, the sliding groove slides along the rotating shaft at the four corners of the fixed block 4, causing the two U-shaped frames 402 to converge towards the middle. The U-shaped frame 402 drives the clamping ring 404 to clamp the bellows through the connector 403. Rubber pads are provided on the opposite surfaces of the two clamping rings 404. The rubber pads on the opposite surfaces of the clamping rings 404 can increase the friction force and at the same time avoid the metal clamping rings 404 directly contacting the bellows to avoid surface scratches or extrusion deformation, thus ensuring the integrity of the test sample.

[0018] Furthermore, such as Figure 1 and Figure 2 As shown, a slide rail 302 is fixedly connected to the center of the bottom surface of the workbench 2. A slider 303 is slidably connected to the surface of the slide rail 302. The slider 303 is fixedly connected to the rack 203. The top of the rack 203 and the bottom of the workbench 2 are linked through the slide rail 302 and the slider 303 to ensure that the vertical vibration of the rack 203 can be stably transmitted to the workbench 2, driving the workbench 2 and the corrugated pipe fixed above to vibrate synchronously, thus simulating the vibration environment. The support components include threaded columns 5 installed in the threaded grooves. The threaded columns 5 in the threaded grooves at the four corners of the rotating bearing platform 1 are used to adjust the extension length of the threaded columns 5 until the bearing platform 1 is in a horizontal state. A suction cup 501 is fixedly connected to the bottom of the threaded column 5, which fixes the bearing platform 1 by the suction force generated by atmospheric pressure, thus preventing the overall displacement of the device during the test.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A test device for the vibration isolation performance of a bellows, comprising a support platform (1) and a worktable (2), characterized in that: A display screen is installed on one side of the surface of the workbench (2). Support rods (101) are provided at the four corners of the surface of the support platform (1). Threaded grooves are opened on the side of the surface of the support platform (1) near the support rods (101). Support components are provided in the threaded grooves. Clamping components are provided on the surface of the workbench (2). Vibration components are provided in the middle of the surface of the support platform (1). The vibration assembly includes a spring (201) fixedly installed in the middle of the surface of the support platform (1). A connecting column (202) is fixedly connected to the top of the spring (201). A rack (203) is fixedly connected to the top of the connecting column (202). A support frame (204) is fixedly connected to the surface of the support platform (1). The support frame (204) is symmetrically arranged. A motor (205) is provided on one side of the support frame (204). A threaded rod (206) is provided at the output end of the motor (205). Moving blocks (207) are sleeved on both ends of the threaded rod (206). A rotating column (208) is rotatably connected between the two moving blocks (207). Several gears (301) are sleeved on the surface of the rotating column (208).

2. The bellows vibration isolation performance testing device according to claim 1, characterized in that: The number of teeth of the plurality of gears (301) are all different. The gears (301) mesh with the rack (203). The top of the rack (203) corresponds to the bottom of the worktable (2).

3. The bellows vibration isolation performance testing device according to claim 2, characterized in that: The clamping assembly includes a fixing block (4) fixedly installed at both ends of the surface of the workbench (2). A rotating shaft is provided at each of the four corners of the surface of the fixing block (4). A U-shaped frame (402) is provided between the two rotating shafts on the same side. A fixing rod (401) is provided between the two U-shaped frames (402). The fixing rod (401) is sleeved on the surface of the rotating shaft. A sliding groove for the rotating shaft to move is provided at both ends of the fixing rod (401). A connector (403) is provided at the end of the two U-shaped frames (402) away from the fixing rod (401). A clamping ring (404) is provided on one side of the connector (403). Cylinders are provided at both ends of the surface of the workbench (2). The output ends of the two cylinders are connected to the fixing rod (401).

4. The bellows vibration isolation performance testing device according to claim 3, characterized in that: Rubber pads are provided on the opposite surfaces of the two clamping rings (404).

5. The bellows vibration isolation performance testing device according to claim 4, characterized in that: A slide rail (302) is fixedly connected to the middle of the bottom surface of the workbench (2), and a slider (303) is slidably connected to the surface of the slide rail (302). The slider (303) is fixedly connected to the rack (203).

6. The bellows vibration isolation performance testing device according to claim 5, characterized in that: The support assembly includes a threaded post (5) installed in a threaded groove, and a suction cup (501) is fixed to the bottom of the threaded post (5).

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