A luggage pull rod fatigue resistance test device

Abstract

The utility model discloses a kind of luggage pull rod fatigue resistance test devices, it is related to luggage pull rod fatigue resistance test device field.The utility model includes reciprocating lifting device and support plate, fixedly arranged with fixed plate on the support plate, the side of the fixed plate movably provided with movable plate, four groups of quick clamps are movably provided on the fixed plate by adjusting mechanism, adjusting mechanism is used to adjust the horizontal position of quick clamp, for adapting the size of pull rod, the utility model is equipped with by inner support mechanism, adjusting mechanism, two groups of inner support blocks of inner support mechanism are synchronously slid by second adjusting screw rod, and preliminary positioning is realized to the inside abutting support of pull rod, without artificial support alignment;Adjusting mechanism is driven mounting block sliding by first adjusting screw rod, accurately adjusts the horizontal position of four groups of quick clamps, adapts different size pull rod;Third adjusting screw rod adjusts the distance between movable plate and fixed plate, tension pull rod completes secondary positioning, greatly improves clamping firmness, simplifies operation process.

Description

Technical Field

[0001] This utility model relates to the field of fatigue testing device for luggage handles, specifically a fatigue testing device for luggage handles. Background Technology

[0002] The luggage handle fatigue testing device is the core equipment for testing the durability and stability of luggage handles. Driven by a power source such as a motor, the device drives the test fixture to fix the luggage through a transmission system, simulating the repeated stretching and compression actions of the handle in actual use. The device consists of a control system, a power system, a transmission system, a test fixture, and a data acquisition and analysis system. It can adjust parameters such as test stroke, speed, and number of tests, and collects data in real time during the test and generates a report.

[0003] Currently, before conducting fatigue tests on luggage handles, they need to be clamped and fixed. However, there is a problem with this clamping process: specifically, traditional clamping usually uses several quick clamps, but during the clamping process, the operator needs to support the handle and align the handle with the clamping points of the quick clamps to ensure effective clamping. This process is cumbersome and lacks adaptability. Therefore, the inventors urgently need to design a clamping assembly that is highly adaptable and easy to operate, thereby improving the convenience and effectiveness of testing luggage handles. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a fatigue resistance testing device for luggage handles, so as to solve the technical problems of traditional methods that rely on several quick clamps, require manual support of the handle during operation, and precise alignment of the clamping points to achieve effective fixation. This is not only cumbersome, but also has poor adaptability to handles of different specifications.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fatigue resistance testing device for luggage pull rods, comprising a reciprocating lifting device and a support plate, wherein a fixed plate is fixedly mounted on the support plate, and a movable plate is movably mounted on one side of the fixed plate, and four sets of quick clamps are movably mounted on the fixed plate through an adjustment mechanism, the adjustment mechanism being used to adjust the lateral position of the quick clamps to adapt to the pull rod size; The fixed plate is also provided with an internal support mechanism, which includes a slide groove. Two sets of internal support blocks are slidably arranged on the inner side of the slide groove. A second adjusting screw is threadedly connected to the internal support block. The second adjusting screw is mirror threadedly connected to the two sets of internal support blocks. The two sets of internal support blocks abut against the inner side of the pull rod for initial positioning of the pull rod.

[0006] By adopting the above technical solution and setting an internal support mechanism on the fixed plate, the cumbersome problem of manually supporting the pull rod to align the clamp in traditional clamping is solved. When the second adjusting screw is rotated, because the two sets of internal support blocks are connected to the screw in a mirror thread, they can slide synchronously relative to each other or towards each other, forming a precise abutment support from the inside of the pull rod, quickly completing the initial positioning of the pull rod. There is no need for operators to manually calibrate the position, which greatly simplifies the clamping process and reduces the difficulty of manual operation.

[0007] Furthermore, the adjustment mechanism includes a mounting block, which is slidably connected to the fixing plate via a mounting groove, and the quick clamp is bolted onto the mounting block.

[0008] By adopting the above technical solution, the mounting block of the adjustment mechanism is slidably connected to the fixed plate through the mounting groove, making the lateral adjustment of the quick clamp more flexible and smooth. Compared with the traditional fixed installation quick clamp, the clamp spacing can be easily adjusted according to the actual size requirements of the pull rod without disassembling and reinstalling the clamp, which greatly shortens the time cost of adapting to different specifications of pull rods.

[0009] Furthermore, a connecting plate is fixedly disposed between the two sets of mounting blocks, and a mounting plate is fixedly disposed on the fixed plate at a position opposite to the connecting plate. A first adjusting screw is threadedly connected to the mounting plate, and the end of the first adjusting screw is rotatably connected to the connecting plate through a thrust bearing.

[0010] By adopting the above technical solution, the synchronous adjustment of the two sets of mounting blocks is realized, ensuring that the spacing of the four sets of quick clamps can be adjusted symmetrically and evenly, avoiding the problems of inconsistent spacing and uneven clamping force caused by the traditional manual adjustment of each clamp, and greatly improving the symmetry and stability of the pull rod clamping.

[0011] Furthermore, a third adjusting screw is threadedly connected to the movable plate. The end of the third adjusting screw is rotatably connected to the fixed plate through a thrust bearing. The bottom of the pull rod is placed between the fixed plate and the movable plate, and the tension of the pull rod is adjusted by the third adjusting screw to achieve the repositioning of the pull rod.

[0012] By adopting the above technical solution, the distance between the movable plate and the fixed plate can be flexibly adjusted. After the bottom of the pull rod is placed into the distance, the tension of the pull rod can be precisely adjusted by rotating the screw, thereby realizing the repositioning of the pull rod. This effectively makes up for the slight offset problem that may exist in the initial positioning by relying solely on the internal support mechanism, greatly improving the firmness of the pull rod clamping, avoiding the pull rod from loosening or shifting during the reciprocating lifting test, and ensuring the stability of the test process.

[0013] Furthermore, the pull rod includes a sleeve, and a telescopic rod is telescopically provided on the inner side of the sleeve. A handle is installed on the top of the telescopic rod, and a clamping mechanism is driven on the reciprocating lifting device, which movably clamps the handle.

[0014] By adopting the above technical solution, the clamping mechanism on the reciprocating lifting device clamps the handle, accurately simulating the stretching and compression scenarios of the pull rod in actual use, making the fatigue resistance test more in line with the real use conditions, and solving the problem that improper clamping position in traditional testing leads to a large deviation between the test results and the actual use performance.

[0015] Furthermore, the clamping mechanism includes a mounting frame, on which two sets of fastening screws are threadedly connected, and the ends of the fastening screws are provided with pressing blocks. The mounting frame has a "C" shaped structure.

[0016] By adopting the above technical solution, the placement of the handle is simplified. Operators can directly insert the handle of the pull rod into the opening of the mounting frame without the need for precise alignment of the clamping points. This completely solves the problems of cumbersome handle positioning and time-consuming operation in traditional clamping, and significantly improves the convenience of clamping operation.

[0017] Furthermore, a calibration rod is also installed on the support plate. The calibration rod is used to indicate the extension and retraction position of the pull rod. The calibration rod can be adjusted in the longitudinal position and fixed by tightening the handwheel.

[0018] By adopting the above technical solution, a clear marking reference is provided for the extension and retraction position of the pull rod. Operators can intuitively monitor the extension and compression stroke of the pull rod during the test. This solves the problem of inaccurate stroke control and large test data errors caused by the lack of precise marking in traditional testing, greatly improves the accuracy of the test stroke, and ensures that the test parameters meet the preset standards.

[0019] In summary, the present invention has the following main advantages: 1. This utility model utilizes an internal support mechanism and an adjustment mechanism. The two sets of internal support blocks of the internal support mechanism slide synchronously through the second adjusting screw, achieving initial positioning by abutting and supporting the inner side of the pull rod, eliminating the need for manual alignment. The adjustment mechanism drives the mounting block to slide through the first adjusting screw, precisely adjusting the lateral position of the four sets of quick clamps to accommodate pull rods of different sizes. The third adjusting screw adjusts the distance between the movable plate and the fixed plate, tightening the pull rod to complete secondary positioning, significantly improving clamping stability and simplifying the operation process. 2. This utility model uses a clamping mechanism. The "C"-shaped clamping mechanism of the reciprocating lifting device clamps the handle by driving the pressure block through the fastening screw. It is compatible with different handle specifications and the force is evenly distributed, preventing slippage and falling off. Attached Figure Description

[0020] Figure 1This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of this utility model; Figure 3 This is an enlarged structural schematic diagram of the internal support mechanism of this utility model; Figure 4 This utility model Figure 1 Enlarged structural diagram at point A; Figure 5 This utility model Figure 1 A magnified structural diagram at point B in the middle.

[0021] In the diagram: 1. Reciprocating lifting device; 2. Support plate; 3. Fixed plate; 4. Movable plate; 5. Tie rod; 501. Sleeve; 502. Telescopic rod; 503. Handle; 6. Quick clamp; 7. Adjustment mechanism; 701. Mounting block; 702. Mounting groove; 703. Connecting plate; 704. Mounting plate; 705. First adjusting screw; 8. Clamping mechanism; 801. Mounting frame; 802. Fastening screw; 803. Pressing block; 9. Internal support mechanism; 901. Slide groove; 902. Internal support block; 903. Second adjusting screw; 10. Third adjusting screw; 11. Calibration rod. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In this embodiment: A fatigue resistance testing device for luggage pull rods, such as Figure 1-5 As shown, it includes a reciprocating lifting device 1 and a support plate 2. A fixed plate 3 is fixedly installed on the support plate 2. A movable plate 4 is movably installed on one side of the fixed plate 3. Four sets of quick clamps 6 are movably installed on the fixed plate 3 through an adjustment mechanism 7. The adjustment mechanism 7 is used to adjust the lateral position of the quick clamps 6 to adapt to the size of the pull rod 5. The fixed plate 3 is also provided with an inner support mechanism 9. The inner support mechanism 9 includes a slide groove 901. Two sets of inner support blocks 902 are slidably arranged on the inner side of the slide groove 901. A second adjusting screw 903 is threadedly connected to the inner support block 902. The second adjusting screw 903 is mirror threadedly connected to the two sets of inner support blocks 902. The two sets of inner support blocks 902 abut against and support the inner side of the pull rod 5, which is used to initially position the pull rod 5.

[0024] An internal support mechanism 9 is set on the fixed plate 3, which solves the cumbersome problem of manually supporting the pull rod 5 to align the clamp in the traditional clamping process. When the second adjusting screw 903 is rotated, the two sets of internal support blocks 902 are connected to the screw in a mirror thread, and can slide synchronously relative to each other or towards each other, forming a precise abutment support from the inside of the pull rod 5, quickly completing the initial positioning of the pull rod 5. There is no need for the operator to manually calibrate the position, which greatly simplifies the clamping process and reduces the difficulty of manual operation. At the same time, the lateral position of the four sets of quick clamps 6 can be flexibly adjusted with the help of the adjusting mechanism 7, which can adapt to pull rods 5 with different diameters and widths. This effectively makes up for the defects of the traditional quick clamps, such as the fixed position being non-adjustable and poor adaptability, and avoids the problem of clamping failure due to differences in pull rod size.

[0025] See Figure 1 , Figure 2 , Figure 4 The adjustment mechanism 7 includes a mounting block 701, which is slidably connected to the fixed plate 3 via a mounting groove 702. The quick clamp 6 is bolted onto the mounting block 701. The mounting block 701 of the adjustment mechanism 7 is slidably connected to the fixed plate 3 via the mounting groove 702, making the lateral adjustment of the quick clamp 6 more flexible and smooth. Compared with the traditional fixed installation quick clamp, the clamp spacing can be easily adjusted according to the actual size requirements of the pull rod 5 without disassembling and reinstalling the clamp, which greatly shortens the time cost of adapting to different specifications of pull rods. At the same time, the quick clamp 6 is bolted onto the mounting block 701, which not only ensures a firm connection and prevents the clamp from loosening or shifting during the test, but also has a convenient disassembly and replacement function. When the quick clamp is worn or malfunctions, it can be quickly disassembled for repair or replacement, reducing the difficulty and cost of equipment maintenance.

[0026] See Figure 1 , Figure 2 , Figure 4 A connecting plate 703 is fixedly installed between the two sets of mounting blocks 701. A mounting plate 704 is fixedly installed on the fixed plate 3 at a position opposite to the connecting plate 703. A first adjusting screw 705 is threadedly connected to the mounting plate 704. The end of the first adjusting screw 705 is rotatably connected to the connecting plate 703 through a thrust bearing, realizing the synchronous adjustment of the two sets of mounting blocks 701. This ensures that the four sets of quick clamps 6 can adjust the spacing symmetrically and evenly, avoiding the problems of inconsistent spacing and uneven clamping force caused by traditional manual adjustment of each clamp. This greatly improves the symmetry and stability of the clamping of the pull rod 5. At the same time, the first adjusting screw 705 is threadedly connected to the mounting plate 704, and its end is rotatably connected to the connecting plate 703 through a thrust bearing. This ensures the smoothness of the adjustment process, reduces the operating force, and can accurately control the sliding distance of the mounting blocks 701, realizing the fine adjustment of the lateral position of the quick clamp 6 and adapting to the precise clamping requirements of pull rods of different sizes.

[0027] See Figure 1 , Figure 2 The movable plate 4 is threaded with a third adjusting screw 10. The end of the third adjusting screw 10 is rotatably connected to the fixed plate 3 through a thrust bearing. The bottom of the pull rod 5 is placed between the fixed plate 3 and the movable plate 4, and the tension of the pull rod 5 is adjusted by the third adjusting screw 10 to achieve the repositioning of the pull rod 5. The distance between the movable plate 4 and the fixed plate 3 can be flexibly adjusted. After the bottom of the pull rod 5 is placed in the distance, the tension of the pull rod 5 can be precisely adjusted by rotating the screw to achieve the repositioning of the pull rod 5. This effectively compensates for the slight offset problem that may exist in the initial positioning by the inner support mechanism 9 alone, greatly improves the firmness of the pull rod 5 clamping, avoids the pull rod from loosening or shifting during the reciprocating lifting test, and ensures the stability of the test process. At the same time, the adjustment method of the third adjusting screw 10 has a strong controllability. The tension can be flexibly adjusted according to the thickness of the bottom of the pull rod 5, which can not only ensure the clamping stability, but also avoid deformation and damage to the bottom of the pull rod 5 due to excessive force. It is suitable for pull rods 5 with different structural types.

[0028] See Figure 1 , Figure 2 The pull rod 5 includes a sleeve 501, with a telescopic rod 502 telescopically mounted on the inner side of the sleeve 501. A handle 503 is mounted on the top of the telescopic rod 502. A clamping mechanism 8 is driven on the reciprocating lifting device 1. The clamping mechanism 8 and the handle 503 are movably clamped together. The clamping mechanism 8 on the reciprocating lifting device 1 accurately simulates the tension and compression scenarios of the pull rod in actual use, making the fatigue resistance test more in line with the real use conditions. This solves the problem that improper clamping position in traditional testing leads to a large deviation between the test results and the actual use performance. At the same time, the movable clamping method of the clamping mechanism 8 and the handle 503 can be adapted to pull rod handles of different shapes and sizes. There is no need to design special clamps for specific handles, which effectively improves the versatility of the equipment and avoids the limitation of traditional clamps that can only adapt to a single type of handle.

[0029] See Figure 1 , Figure 2 , Figure 5The clamping mechanism 8 includes a mounting frame 801, on which two sets of fastening screws 802 are threadedly connected. The ends of the fastening screws 802 are provided with pressing blocks 803. The mounting frame 801 has a "C" shaped structure, which simplifies the placement of the handle 503. The operator can directly insert the handle 503 of the pull rod 5 from the opening of the mounting frame without the need for precise alignment of the clamping points. This completely solves the problem of cumbersome handle positioning and time-consuming operation in traditional clamping, and significantly improves the convenience of clamping operation. At the same time, the two sets of fastening screws 802 on the mounting frame 801 are symmetrically arranged. Rotating the screws can drive the pressing blocks 803 at the ends to form a uniform clamping of the handle 503 from both sides, ensuring that the handle 503 is subjected to balanced force and avoiding the situation where the handle is deformed or damaged due to excessive clamping force on one side, thus improving the safety of clamping.

[0030] See Figure 1 , Figure 2 The support plate 2 is also equipped with a calibration rod 11, which is used to indicate the extension and retraction position of the pull rod 5. The calibration rod 11 can be adjusted in the longitudinal position and fixed by the handwheel, providing a clear marking reference for the extension and retraction position of the pull rod 5. The operator can intuitively monitor the extension and compression stroke of the pull rod 5 during the test, which solves the problem of inaccurate stroke control and large test data error caused by the lack of precise marking in traditional testing. It greatly improves the accuracy of the test stroke and ensures that the test parameters meet the preset standards. At the same time, the calibration rod 11 can be adjusted in the longitudinal position and fixed by the handwheel, which can adapt to the test requirements of pull rods 5 with different extension and retraction ranges. Whether it is a small pull rod with short stroke or a large pull rod with long stroke, the precise marking can be achieved by adjusting the position of the calibration rod, which effectively improves the adaptability of the equipment.

[0031] The implementation principle of this embodiment is as follows: Using the reciprocating lifting device 1 as the test power and the support plate 2 as the installation base, firstly, the internal support mechanism 9 on the fixed plate 3 is used for initial positioning. The second adjusting screw 903 is rotated. Because the two sets of internal support blocks 902 are connected to the screw in a mirror threaded manner, the internal support blocks 902 in the slide groove 901 can slide relative to or towards each other, forming abutment support on the inner side of the pull rod 5, quickly calibrating the position of the pull rod 5. Subsequently, the adjusting mechanism 7 is used to adapt to the size of the pull rod 5. The first adjusting screw 705 on the mounting plate 704 is rotated, driving the connecting plate 703 and the connected mounting block 701 along... The mounting slot 702 slides, thereby adjusting the lateral spacing of the four sets of quick clamps 6 to ensure that they match the clamping requirements of the pull rod 5; then the third adjusting screw 10 on the movable plate 4 is rotated to adjust the distance between the movable plate 4 and the fixed plate 3, and the pull rod 5 is tightened to complete the secondary positioning and ensure the stability of the fixation; finally, the reciprocating lifting device 1 drives the pressure block 803 to clamp the handle 503 of the pull rod 5 through the fastening screw 802 of the "C" shaped clamping mechanism 8, realizing the reciprocating extension and retraction of the pull rod 5, and at the same time, the adjustable calibration rod 11 on the support plate 2 accurately marks the extension and retraction position to ensure the accurate and efficient performance of the fatigue resistance test.

[0032] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A fatigue resistance testing device for luggage pull rods, characterized in that: It includes a reciprocating lifting device (1) and a support plate (2). A fixed plate (3) is fixedly installed on the support plate (2). A movable plate (4) is movably installed on one side of the fixed plate (3). Four sets of quick clamps (6) are movably installed on the fixed plate (3) through an adjustment mechanism (7). The adjustment mechanism (7) is used to adjust the lateral position of the quick clamps (6) to adapt to the size of the pull rod (5). The fixed plate (3) is also provided with an inner support mechanism (9). The inner support mechanism (9) includes a slide groove (901). Two sets of inner support blocks (902) are slidably arranged on the inner side of the slide groove (901). A second adjusting screw (903) is threadedly connected to the inner support block (902). The second adjusting screw (903) is mirror threadedly connected to the two sets of inner support blocks (902). The two sets of inner support blocks (902) abut against and support the inner side of the pull rod (5) for preliminary positioning of the pull rod (5).

2. The fatigue resistance testing device for luggage pull rods according to claim 1, characterized in that: The adjustment mechanism (7) includes a mounting block (701), which is slidably connected to the fixing plate (3) through a mounting groove (702), and the quick clamp (6) is bolted to the mounting block (701).

3. The fatigue resistance testing device for luggage pull rods according to claim 2, characterized in that: A connecting plate (703) is fixedly disposed between the two sets of mounting blocks (701). A mounting plate (704) is fixedly disposed on the fixing plate (3) at a position opposite to the connecting plate (703). A first adjusting screw (705) is threadedly connected to the mounting plate (704). The end of the first adjusting screw (705) is rotatably connected to the connecting plate (703) through a thrust bearing.

4. The fatigue resistance testing device for luggage pull rods according to claim 1, characterized in that: The movable plate (4) is threaded with a third adjusting screw (10). The end of the third adjusting screw (10) is rotatably connected to the fixed plate (3) through a thrust bearing. The bottom of the pull rod (5) is placed between the fixed plate (3) and the movable plate (4), and the tension of the pull rod (5) is adjusted by the third adjusting screw (10) to realize the repositioning of the pull rod (5).

5. The fatigue resistance testing device for luggage pull rods according to claim 1, characterized in that: The pull rod (5) includes a sleeve (501), and a telescopic rod (502) is provided on the inner side of the sleeve (501). A handle (503) is installed on the top of the telescopic rod (502). A clamping mechanism (8) is provided on the reciprocating lifting device (1), and the clamping mechanism (8) and the handle (503) are movably clamped.

6. The fatigue resistance testing device for luggage pull rods according to claim 5, characterized in that: The clamping mechanism (8) includes a mounting frame (801), on which two sets of fastening screws (802) are threadedly connected. The end of the fastening screw (802) is provided with a pressing block (803). The mounting frame (801) has a "C" shaped structure.

7. The fatigue resistance testing device for luggage pull rods according to claim 1, characterized in that: A calibration rod (11) is also installed on the support plate (2). The calibration rod (11) is used to indicate the extension and retraction position of the pull rod (5). The calibration rod (11) can be adjusted in the longitudinal position and fixed by tightening the handwheel.

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