Pull-out test tool

Abstract

The embodiment of the invention provides a pull-out test tool, and relates to the field of wind power towers, the pull-out test tool comprises a supporting structure, a workbench and an adjusting assembly, the adjusting assembly is connected with the supporting structure, the adjusting assembly enables the supporting structure to move in at least one direction, and the supporting structure drives the workbench to move synchronously when moving. The workbench can move through the adjusting assembly, so that when the equipment is in different test scenes, the position of the workbench is directly controlled through the adjusting assembly without frequent replacement or adjustment, and the problem of low efficiency caused by frequent replacement is solved.

Description

Technical Field

[0001] This application relates to the field of wind power towers, and more particularly to a pull-out test fixture. Background Technology

[0002] As the core supporting structure of a wind power generation system, the reliability of the wind turbine's accessory structures (such as bolted connections and bonded components) directly affects the stability and safety of the entire wind turbine. During the production and maintenance of wind turbine towers, pull-out tests are conducted on the connection strength of bonded structures (such as adhesives and welds) to verify whether they meet design specifications. Modular pull-out testing fixtures are specialized equipment used to simulate the stress state of bonded structures under actual working conditions. They test the shear or tensile resistance of bonded areas by applying a controlled tensile force.

[0003] In the prior art, the insertion rod of the adhesive component to be tested is passed through the workbench and inserted into the puller. The connection structure is fixed by bolts, and then the puller is started to perform a pull test on the adhesive part.

[0004] However, the connection height between the support frame and the workbench is not adjustable, which means that the equipment needs to be frequently replaced or adjusted in different testing scenarios (such as adhesive parts of different sizes or the operating height requirements of testers), making the operation cumbersome and inefficient. Summary of the Invention

[0005] This application provides a pull-out testing fixture to solve the problem of low efficiency when frequently changing or adjusting it in different testing scenarios.

[0006] In a first aspect, embodiments of this application provide a pull-out test fixture, comprising:

[0007] Support structure;

[0008] A workbench is provided on the support structure; a puller is adapted to be mounted on one side of the workbench; a first test plate and a second test plate are adapted to be mounted on the other side of the workbench; the puller is fixedly connected to either the first test plate or the second test plate.

[0009] An adjustment component is connected to the support structure; the adjustment component causes the support structure to move in at least one direction; when the support structure moves, it drives the worktable to move synchronously.

[0010] In one possible implementation, the regulating component includes:

[0011] A transmission assembly, the transmission assembly including a motor and a gear set that is drively connected to the output shaft of the motor;

[0012] A linear drive mechanism is connected to the gear set; the linear drive mechanism is used to convert rotational motion into linear motion; the linear drive mechanism drives the support structure to move in a first direction through linear motion, so as to drive the worktable to move in the first direction.

[0013] In one possible implementation, the gear set includes:

[0014] The first gear is fixedly connected to the output shaft of the motor.

[0015] At least one second gear, which meshes with the first gear.

[0016] In one possible implementation, the linear drive mechanism includes:

[0017] A threaded rod is fixedly connected to the second gear; the threaded rod rotates synchronously with the second gear; the surface of the threaded rod is provided with threads;

[0018] A connector, one end of which is connected to the support structure; the second end of which is connected to the threaded rod; the second end of which is a connecting part; the inner side of the connecting part is provided with a thread; the connecting part is engaged with the threaded rod; the threaded rod drives the connector to move in the first direction during rotation.

[0019] In one possible implementation, the support structure includes:

[0020] Support frame;

[0021] A base is disposed at the bottom of the support frame; the base is connected to the first end of the connector.

[0022] In one possible implementation, the support structure further includes:

[0023] A support connecting plate is provided, with one side of the support frame fixedly connected and the other side detachably connected to the base.

[0024] In one possible implementation, both the first test plate and the second test plate are provided with at least one through hole; the bolt assembly is adapted to pass through the through hole to fit the first test plate and the second test plate together.

[0025] Also includes:

[0026] A limiting component is provided on the side of the workbench near the first test plate; a portion of the limiting component is adapted to pass through the through hole; the limiting component is snap-fitted to the first test plate and the second test plate.

[0027] In one possible implementation, the limiting component includes:

[0028] Limiting the main body;

[0029] A limiting rod, one end of which is connected to the limiting body; a portion of the limiting rod is adapted to pass through the through hole and engage with the through hole.

[0030] In one possible implementation, a sliding hole is provided on the limiting body, and the limiting rod is slidably connected to the limiting body through the sliding hole;

[0031] The limiting component includes:

[0032] A spring is disposed within the limiting body;

[0033] A push plate, one side of which is fixedly connected to one end of the limiting rod; the other side of which is fixedly connected to the spring; the push plate, driven by the spring, causes the limiting rod to move toward the first test plate.

[0034] In one possible implementation, it also includes:

[0035] A tube is inserted through the workbench; one end of the tube is fixedly connected to the puller, and the other end of the tube is fixedly connected to either the first test plate or the second test plate; the puller is fixedly connected to either the first test plate or the second test plate through the tube.

[0036] This application provides a pull-out testing fixture, including a support structure, a worktable, and an adjustment component. The adjustment component is connected to the support structure, and the adjustment component allows the support structure to move in at least one direction. When the support structure moves, it drives the worktable to move synchronously. By adjusting the component, the worktable can be moved, so that the equipment does not need to be frequently replaced or adjusted in different testing scenarios. The position of the worktable can be directly controlled by the adjustment component, thereby solving the problem of low efficiency caused by frequent replacement. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0038] Figure 1 A schematic diagram of the overall structure of a pull-out test fixture provided in this application;

[0039] Figure 2 A schematic diagram of the support structure for a pull-out test fixture provided in this application;

[0040] Figure 3 A schematic diagram of the structure of the adjustment component of a pull-out test fixture provided in this application;

[0041] Figure 4 This is a schematic diagram of the limiting component of a pull-out test fixture provided in this application.

[0042] Figure label:

[0043] 10. First test plate; 20. Second test plate; 30. Through hole; 40. Bolt assembly; 50. Puller;

[0044] 100. Support structure; 110. Support frame; 120. Base; 130. Support connecting plate;

[0045] 200. Workbench;

[0046] 300. Adjustment assembly; 310. Transmission assembly; 311. Motor; 312. Gear set; 3121. First gear; 3122. Second gear; 320. Linear drive mechanism; 321. Threaded rod; 322. Connecting component;

[0047] 400. Limiting component; 410. Limiting body; 420. Limiting rod; 430. Spring; 440. Push plate;

[0048] 500, insert;

[0049] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0050] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0051] First, let me explain the terms used in this application:

[0052] Wind turbine towers: As the core supporting structure of wind power generation systems, the reliability of their accessory structures (such as bolted connections, adhesive components, etc.) directly affects the stability and safety of the entire wind turbine.

[0053] Pull-out test: During the production and maintenance of wind turbine towers, pull-out tests are required to verify the connection strength of bonded structures (such as adhesives and welds) to ensure they meet design specifications. Modular pull-out test fixtures are specialized equipment used to simulate the stress state of bonded structures under actual working conditions. By applying a controllable tensile force, they test the shear or tensile resistance of the bonded parts.

[0054] In existing technology, the insertion rod of the bonded component to be tested is passed through the workbench and inserted into the puller. The connection structure is fixed with bolts, and then the puller is activated to perform a pull test on the bonded area. However, the connection height between the support frame and the workbench is not adjustable, which means that the equipment needs to be frequently replaced or adjusted in different testing scenarios (such as bonded components of different sizes or the operating height requirements of the test personnel), making the operation cumbersome and inefficient.

[0055] To address the aforementioned issues, this application provides a pull-out testing fixture comprising a support structure, a worktable, and an adjustment component. The adjustment component is connected to the support structure, enabling the support structure to move in at least one direction. The movement of the support structure causes the worktable to move synchronously. By adjusting the worktable, the fixture can be moved, eliminating the need for frequent replacements or adjustments in different testing scenarios. The position of the worktable can be directly controlled via the adjustment component, thus solving the problem of low efficiency caused by frequent replacements.

[0056] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0057] like Figure 1 As shown in the embodiment of this application, a pull-out test fixture includes a support structure 100, a worktable 200, and an adjustment assembly 300. The worktable 200 is disposed on the support structure 100. A puller 50 is adapted to be disposed on one side of the worktable 200. A first test plate 10 and a second test plate 20 are adapted to be disposed on the other side of the worktable 200. The puller 50 is fixedly connected to either the first test plate 10 or the second test plate 20. The adjustment assembly 300 is connected to the support structure 100. The adjustment assembly 300 causes the support structure 100 to move in at least one direction. When the support structure 100 moves, it drives the worktable 200 to move synchronously.

[0058] It should be noted that the adjustment component 300 allows the support structure 100 and the worktable 200 to move in the height direction of the pull-out test fixture. This is to solve the problem that the support frame 110 of the existing equipment has a fixed height and cannot be flexibly adjusted according to test requirements (such as different sizes of bonded parts, differences in operator height, changes in the test environment, etc.), resulting in insufficient test convenience.

[0059] The support structure 100 supports the workbench 200, and the puller 50 is equipped with an air valve. The air valve controls the air pressure or hydraulic system to apply tension to the adhered parts, simulating actual working conditions.

[0060] like Figure 2 As shown, the adjustment assembly 300 further includes a transmission assembly 310 and a linear drive mechanism 320, wherein the transmission assembly 310 includes a motor 311 and a gear set 312 that is drivenly connected to the output shaft of the motor 311; the linear drive mechanism 320 is connected to the gear set 312; the linear drive mechanism 320 is used to convert rotary motion into linear motion; the linear drive mechanism 320 drives the support structure 100 to move in a first direction through linear motion, so as to drive the worktable 200 to move in the first direction.

[0061] It should be noted that, in this embodiment, the first direction is the height direction of the pull-out test fixture. Figure 1 The middle represents the vertical direction.

[0062] It should be noted that the number of linear drive mechanisms 320 can be further increased, thereby enabling the worktable 200 to move in different directions and allowing the worktable 200 to move in more directions in space, making the equipment suitable for different testing scenarios; for example, there are two linear drive mechanisms 320, one of which drives the support structure 100 to move in the height direction of the tooling, and the other of which drives the support structure 100 to move in the front-back or left-right direction of the tooling.

[0063] In this design, the combination of motor 311 and gear set 312 allows motor 311 to achieve greater output torque at its rated power by reducing the output shaft speed through gear set 312. This enables a low-power, high-speed motor 311 to drive heavy loads. Furthermore, the gear transmission structure is more compact, allowing for a large reduction ratio and torque output within a confined space.

[0064] The gear set 312 rotates under the drive of the electrode output. By setting a linear drive mechanism 320, the rotational motion of the electrode and the gear set 312 can be converted into linear motion, and the worktable 200 moves linearly in the height direction of the tooling through the linear motion.

[0065] like Figure 3 As shown, specifically, the gear set 312 includes a first gear 3121 and at least one second gear 3122; the first gear 3121 is fixedly connected to the output shaft of the motor 311; the second gear 3122 is meshed with the first gear 3121.

[0066] By selecting and matching the first gear 3121 and the second gear 3122 with different numbers of teeth, the desired final gear ratio can be easily "customized".

[0067] Furthermore, when multiple second gears 3122 simultaneously mesh with the first gear 3121 (similar to the concept of planetary gears, but here with parallel shafts), power can be distributed from the first gear 3121 to the multiple second gears 3122. The load is shared by multiple gear teeth, reducing the force on each gear, allowing the system to transmit greater power. This multi-path transmission makes the transmission process smoother and more resistant to impact.

[0068] In this embodiment, there are two second gears 3122. The two second gears 3122 are completely identical. The two identical second gears 3122 are symmetrically arranged on both sides of the first gear 3121. This can balance the radial force on the first gear 3121 (drive gear), reduce the load on the bearing, and thus improve the bearing life and transmission accuracy.

[0069] The first gear 3121 and the second gear 3122 are meshed together, providing a constant and precise transmission ratio, high power density, and the ability to transmit enormous power in a compact size; they are also reliable, have a long service life, and strong load-bearing capacity.

[0070] As an alternative implementation, the gear-thread drive driven by the motor 311 can be replaced with a hydraulic cylinder-driven lifting structure. The hydraulic cylinder is extended and retracted by a hydraulic pump, directly driving the worktable 200 to rise and fall. The hydraulic system can provide greater thrust, making it suitable for heavy-duty testing scenarios; the sealing of the hydraulic cylinder can withstand humid outdoor environments, improving the durability of the equipment.

[0071] Furthermore, the linear drive mechanism 320 includes a threaded rod 321 and a connector 322; the threaded rod 321 is fixedly connected to the second gear 3122; the threaded rod 321 and the second gear 3122 rotate synchronously; the surface of the threaded rod 321 is provided with threads; one end of the connector 322 is connected to the support structure 100; the second end of the connector 322 is connected to the threaded rod 321; the second end of the connector 322 is a connecting part; the inner side of the connecting part is provided with threads; the connecting part is engaged with the threaded rod 321; during the rotation of the threaded rod 321, the connector 322 is driven to move in a first direction.

[0072] It should be noted that for every revolution of the threaded rod 321, the connecting piece 322 advances precisely by one thread pitch. In conjunction with the precision motor 311 and gear set 312, very precise linear displacement control can be achieved. The entire transmission process is a continuous helical motion with stepless adjustment, allowing for greater freedom in adjusting the height of the worktable 200.

[0073] Specifically, the connecting part of the connector 322 is similar to a nut, and the rotation of the threaded rod 321 drives the connector 322 to move in the first direction through the connecting part.

[0074] In this embodiment, the number of threaded rods 321 and connectors 322 is the same as that of the second gear 3122. By setting two sets of threaded rods 321 and connectors 322, shaking is avoided during lifting and lowering, thus increasing stability.

[0075] Furthermore, the pull-out test fixture provided in this embodiment includes a support structure 100 comprising a support frame 110 and a base 120; wherein the base 120 is disposed at the bottom of the support frame 110; and the base 120 is connected to the first end of the connector 322.

[0076] The support frame 110 is connected to the ground via the base 120. When no adjustment is required, the support frame 110 is stably placed on the ground via the base 120.

[0077] Specifically, in this embodiment, there are two support structures 100, which are arranged on the lower side of the workbench 200. The support frame 110 is fixedly connected to the workbench 200 by welding.

[0078] Increasing the number of support structures 100 can further increase the stability of the overall tooling. In this embodiment, the support structures 100 are arranged on opposite sides of the workbench 200.

[0079] Furthermore, the support structure 100 also includes a support connecting plate 130, one side of which is fixedly connected to the support frame 110, and the other side is detachably connected to the base 120.

[0080] Specifically, the support connecting plate 130 is detachably connected to the base 120 by bolts; the support connecting plate 130 can increase the adaptability of the support frame 110, and the support frame 110 is fixedly connected to the ground by bolts through the support connecting plate 130.

[0081] It should be noted that if the support connecting plate 130 is not provided, and the support frame 110 is placed on the ground only by the base 120 when no adjustment is needed, it is easy to overturn during the pull-out test. By connecting the support frame 110 to the ground through the support connecting plate 130 with bolts, a reliable rigid connection can be formed, thereby avoiding overturning.

[0082] Furthermore, at least one through-hole 30 is provided on both the first test plate 10 and the second test plate 20; the bolt group 40 is adapted to pass through the through-hole 30 to make the first test plate 10 and the second test plate 20 fit together; and a limiting component 400 is further included, which is arranged on one side of the workbench 200 close to the first test plate 10; a part of the limiting component 400 is adapted to pass through the through-hole 30; and the limiting component 400 is snap-connected to the first test plate 10 and the second test plate 20.

[0083] Specifically, the bolt group 40 includes a threaded plug and a nut. The first test plate 10 and the second test plate 20 are restricted by the threaded plug, and then the puller 50 is started for the pull-out test.

[0084] In the prior art, the fitting of the test plates depends on manual adjustment, but it is easy to affect the test accuracy due to positioning deviation. Through the limiting component, the first test plate 10 and the second test plate 20 are restricted in position to facilitate the subsequent installation of the threaded plug and the nut, and further improve the convenience during the test.

[0085] It should be noted that the through-hole 30 is specifically a strip-shaped hole. First, the limiting component 400 is snap-connected to one end of the through-hole 30, and then the bolt group 40 is snap-connected to the other end of the through-hole 30, so as to prevent the first test plate 10 and the second test plate 20 from being easily affected by the positioning deviation and affecting the test accuracy.

[0086] It should be noted that both the first test plate 10 and the second test plate 20 are in a "U" shape and are arranged opposite to each other.

[0087] As Figure 4 shown, furthermore, the limiting component 400 includes a limiting main body 410 and a limiting rod 420; one end of the limiting rod 420 is connected to the limiting main body 410; a part of the limiting rod 420 is adapted to pass through the through-hole 30 and is snap-connected to the through-hole 30.

[0088] After the limiting rod 420 is inserted into the hole position, mechanical limitation is formed to eliminate the deviation of the parallelism and perpendicularity of the fitting surface.

[0089] Specifically, the limiting rod 420 and the through-hole 30 are in a transition fit.

[0090] Furthermore, a sliding hole is provided on the limiting main body 410, and the limiting rod 420 is slidably connected to the limiting main body 410 through the sliding hole;

[0091] The limiting component 400 includes a spring 430 and a push plate 440; the spring 430 is disposed inside the limiting body 410; one side of the push plate 440 is fixedly connected to one end of the limiting rod 420; the other side of the push plate 440 is fixedly connected to the spring 430; the push plate 440, driven by the spring 430, causes the limiting rod 420 to move toward the first test plate 10.

[0092] The elastic force of spring 430 drives the limiting rod 420 to extend, allowing it to automatically adapt and extend into the through hole 30; as long as spring 430 is within its elastic limit, it can provide a continuous and stable force. This ensures that the force applied to the workpiece by the limiting rod 420 is stable and controllable during testing or processing, avoiding measurement errors or workpiece displacement caused by uneven pressure.

[0093] When it is necessary to release the limit, simply pull the limit rod 420 back against the force of the spring 430. Once released, the limit rod 430 will automatically return to the ready-to-work state under the action of the spring 430, ready for the next action; and it does not rely on electricity or sensors, has strong anti-interference ability, and low failure rate.

[0094] The limiting rod 430 automatically inserts into the preset hole, eliminating errors from manual fitting and ensuring the parallelism and perpendicularity of the mating surfaces of the first test plate 10 and the second test plate 20. The elastic return function of the limiting rod 430 eliminates the need for repeated manual adjustments to the test plate position, enabling one-click positioning and shortening test preparation time. The elimination of positioning errors directly improves the accuracy of pull-out test data and reduces misjudgments caused by installation deviations.

[0095] Furthermore, it also includes a tube 500 that passes through the workbench 200; one end of the tube 500 is fixedly connected to the puller 50, and the other end of the tube 500 is fixedly connected to either the first test plate 10 or the second test plate 20; the puller 50 is fixedly connected to either the first test plate 10 or the second test plate 20 through the tube 500.

[0096] It should be noted that one end of the insert 500 is snapped into place with the puller 50.

[0097] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A pull-out test fixture, characterized in that, include: Support structure (100); A workbench (200) is mounted on the support structure (100); a puller (50) is adapted to be mounted on one side of the workbench (200); a first test plate (10) and a second test plate (20) are adapted to be mounted on the other side of the workbench (200); the puller (50) is fixedly connected to either the first test plate (10) or the second test plate (20); An adjustment component (300) is connected to the support structure (100); the adjustment component (300) causes the support structure (100) to move in at least one direction; when the support structure (100) moves, it drives the worktable (200) to move synchronously.

2. The pull-out test fixture according to claim 1, characterized in that, The adjustment component (300) includes: The transmission assembly (310) includes a motor (311) and a gear set (312) connected to the output shaft of the motor (311). A linear drive mechanism (320) is connected to the gear set (312); the linear drive mechanism (320) is used to convert rotational motion into linear motion; the linear drive mechanism (320) drives the support structure (100) to move in a first direction through linear motion, so as to drive the worktable (200) to move in the first direction.

3. The pull-out testing fixture according to claim 2, characterized in that, The gear set (312) includes: The first gear (3121) is fixedly connected to the output shaft of the motor (311); At least one second gear (3122) meshes with the first gear (3121).

4. The pull-out test fixture according to claim 3, characterized in that, The linear drive mechanism (320) includes: A threaded rod (321) is fixedly connected to the second gear (3122); the threaded rod (321) and the second gear (3122) rotate synchronously; the surface of the threaded rod (321) is provided with threads; A connector (322) is provided, one end of which is connected to the support structure (100); the second end of the connector (322) is connected to the threaded rod (321); the second end of the connector (322) is a connecting part; the inner side of the connecting part is provided with a thread; the connecting part is engaged with the threaded rod (321); the threaded rod (321) drives the connector (322) to move in the first direction during rotation.

5. The pull-out test fixture according to claim 4, characterized in that, The support structure (100) includes: Support frame (110); A base (120) is disposed at the bottom of the support frame (110); the base (120) is connected to the first end of the connector (322).

6. The pull-out test fixture according to claim 5, characterized in that, The support structure (100) also includes: A support connecting plate (130) is fixedly connected to the support frame (110) on one side and detachably connected to the base (120) on the other side.

7. The pull-out testing fixture according to any one of claims 1-6, characterized in that, Both the first test plate (10) and the second test plate (20) are provided with at least one through hole (30); the bolt group (40) is adapted to pass through the through hole (30) so that the first test plate (10) and the second test plate (20) fit together; Also includes: A limiting component (400) is disposed on the side of the workbench (200) near the first test plate (10); a portion of the limiting component (400) is adapted to pass through the through hole (30); the limiting component (400) is snap-fitted to the first test plate (10) and the second test plate (20).

8. The pull-out test fixture according to claim 7, characterized in that, The limiting component (400) includes: Limiting body (410); A limiting rod (420) is provided, one end of which is connected to the limiting body (410); a portion of the limiting rod (420) is adapted to pass through the through hole (30) and engage with the through hole (30).

9. The pull-out test fixture according to claim 8, characterized in that, The limiting body (410) is provided with a sliding hole, and the limiting rod (420) is slidably connected to the limiting body (410) through the sliding hole; The limiting component (400) includes: A spring (430) is disposed within the limiting body (410); A push plate (440) is fixedly connected to one end of the limiting rod (420) on one side; the other side of the push plate (440) is fixedly connected to the spring (430); the push plate (440) moves the limiting rod (420) toward the first test plate (10) under the drive of the spring (430).

10. The pull-out testing fixture according to claim 7, characterized in that, Also includes: Insert (500) penetrates the workbench (200); one end of the insert (500) is fixedly connected to the puller (50), and the other end of the insert (500) is fixedly connected to either the first test plate (10) or the second test plate (20); the puller (50) is fixedly connected to either the first test plate (10) or the second test plate (20) through the insert (500).

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