Luggage pull rod fatigue test equipment
By combining guide rails, clamping rods, and limit frames, the problem of existing equipment being unable to adapt to different sizes of pull rods is solved, achieving stable fixation of luggage pull rods and accuracy of test data, preventing pull rod loosening, and improving the smoothness and accuracy of testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RUIAN TAIHE LUGGAGE ACCESSORIES CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-05-12
AI Technical Summary
Existing luggage handle testing equipment cannot be adapted to handles of different sizes, resulting in insecure fixing and affecting the accuracy of test results.
A fixing assembly including a guide rail, a clamping rod, and a limiting frame was designed. The rod is clamped by an alternating block and a fixing block pushed by a cylinder, and the tensioning operation is simulated by gear transmission. Combined with the shock absorption of a buffer spring, the rod is ensured not to loosen during the test.
It achieves stable fixation of tie rods of different sizes, ensuring the accuracy and reliability of test data, preventing the tie rods from loosening or shifting during testing, and improving the smoothness and accuracy of testing.
Smart Images
Figure CN224231238U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fatigue testing technology, specifically to a fatigue testing device for luggage handles. Background Technology
[0002] The handle of a suitcase or rolling case is the part used to pull and lift the bag. In daily use, not only the load inside the bag, but also environmental factors such as bumpy roads and vibrations from steps add extra load to the handle. The structural strength of the handle determines the safety and durability of the bag.
[0003] Application number CN202120900996.7 discloses a pull rod strength testing device, including a frame, a drive cylinder, a piston rod, and a bag. The drive cylinder is fixedly mounted on the frame. The piston rod is linked to the drive cylinder and extends vertically downward. A hook is provided at the end of the piston rod away from the drive cylinder. The bag's pull rod is unfolded and suspended from the hook via the pull rod. The drive cylinder drives the bag to move up and down and vibrate. Using this technical solution, by filling the bag with actual material to simulate a loaded state and suspending it from the hook, the drive cylinder causes the bag to vibrate up and down. The weight of the bag is borne by the suspended pull rod. The strength of the pull rod is tested through the number of vibrations.
[0004] The design of the fixing components of this testing equipment is relatively simple, making it difficult to adapt to various sizes and shapes of bag handles. For example, the size of some fixing clips is not adjustable, and it cannot firmly fix bag handles with different diameters and special shapes. This causes the handles to loosen easily during the test, affecting the accuracy of the test results and reducing the practicality of the equipment. Utility Model Content
[0005] The purpose of this invention is to provide a fatigue testing device for luggage pull rods, which solves the problem of not being able to adapt to pull rods of different sizes for fixed-fit tensile testing.
[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0007] This utility model relates to a fatigue testing device for luggage pull rods, comprising a tensile testing device and a fixing assembly. The fixing assembly includes a platform, a guide rail fixedly mounted on the upper surface of the platform, a slide member slidably connected to the top outer wall of the guide rail, a fixing frame fixedly connected to the upper surface of the slide member, limit frames fixedly mounted on the left and right inner walls of the fixing frame, and fixing blocks fixedly mounted on the top left and right outer walls of the platform parallel to the limit frames. A stop block is installed on the side of two fixed blocks that are close to each other. A cylinder is installed on the inner wall of the left stop block, and the cylinder rod end is connected to the adjacent stop block. A fixing block is fixedly mounted on the side of two adjacent stops. The two sets of fixing blocks are staggered in the slots of the two sets of limit frames. The purpose of this setup is that, during the use of the testing equipment, the luggage handle is placed in the fixed frame, the top handle of the handle is sleeved onto the top of the handle connector, and it is fixed by the top groove of the handle connector. Initial positioning is achieved using a limit bracket. The cylinder is activated, and the air rod pushes the stop block to move, causing the staggered fixing blocks to clamp and fix the luggage handle. The motor is then turned on, and the first gear at the motor shaft rotates, meshing with the connecting wheel to drive the top drive shaft. The gears on the top drive shaft mesh with the top drive gear, and several drive gears mesh with each other, sequentially transmitting power to each drive shaft. When the bottom drive shaft rotates, the fixedly sleeved toothed block on it rotates accordingly, meshing with the toothed rod, causing the toothed rod to move linearly within the guide groove. The handle connector connected to the front end of the toothed rod then stretches or... The retraction action simulates the stretching operation in actual use. During this process, the buffer spring acts as a shock absorber, preventing damage to the equipment and pull rod caused by the impact force generated during transmission. The above action is repeated continuously to achieve fatigue testing of the luggage pull rod. The sliding component cooperates with the guide rail to achieve the sliding function along the guide rail, driving the fixed frame and the luggage pull rod inside to move in position so as to cooperate with the pull rod joint for tensile testing. During the test, the force is transferred to the guide rail to ensure the smoothness of the entire fixed assembly during test movement. The limit frame can perform preliminary and accurate positioning of the luggage pull rod for easy placement. The cylinder pushes the stop block and the fixing block to clamp the pull rod. The staggered fixing blocks can apply pressure from multiple directions to firmly fix the pull rod, ensuring that the pull rod will not loosen or shift during the test, and ensuring the accuracy and reliability of the test data.
[0008] Furthermore, a side frame is fixedly connected to the top side of the platform, and a motor is fixedly installed on the top inner wall of the side frame. A first gear is installed on the shaft end of the motor. The purpose of this arrangement is that during the use of the testing equipment, when the motor is turned on, the first gear on the motor shaft rotates, and through meshing with the connecting wheel, drives the top transmission shaft to rotate. The gears on the top transmission shaft mesh with the top transmission gear, and several transmission gears mesh with each other.
[0009] Furthermore, a row of drive shafts is rotatably connected from top to bottom on the inner wall of the side frame. The first gear is perpendicular to the top of the drive shafts. A connecting wheel is fixedly installed on the outer wall of the top drive shaft, and the connecting wheel meshes with the first gear. The purpose of this arrangement is to ensure that during the use of this testing equipment…
[0010] Furthermore, a gear is fixedly sleeved on the outer wall of one end of the top drive shaft, and transmission gears are fixedly sleeved on the outer wall of one end of the other drive shafts. Several transmission gears mesh with each other, and the gears mesh with the top drive gear. The purpose of this arrangement is that, during the use of the testing equipment, the top drive shaft rotates by meshing with the connecting wheel. The gears on the top drive shaft mesh with the top transmission gears, and simultaneously, several transmission gears mesh with each other, transmitting power sequentially to each drive shaft. When the bottom drive shaft rotates, the toothed block fixedly sleeved on it rotates accordingly, meshing with the rack and causing the rack to move linearly within the guide groove.
[0011] Furthermore, a toothed block is fixedly sleeved on the outer wall of the bottom drive shaft, and a guide groove is formed on the front outer wall of the side frame. A pull rod connector is slidably connected to the inner wall of the guide groove, and the tail end of the pull rod connector extends to the inner wall of the side frame. The purpose of this arrangement is that, during the use of this testing equipment, the top handle of the pull rod is sleeved on the top of the pull rod connector and fixed by the top groove of the pull rod connector. The toothed block rotates accordingly, meshing with the toothed rod, driving the toothed rod to make linear motion in the guide groove. The pull rod connector connected to the front end of the toothed rod will then stretch or retract the fixed bag pull rod, simulating the stretching operation in actual use.
[0012] Furthermore, a toothed rod is fixedly connected to the tail end of the pull rod connector, and the toothed block meshes with the toothed rod. A buffer spring is fixedly installed on the top inner wall of the side frame, and the bottom end of the buffer spring is fixedly connected to the top end of the toothed rod. The purpose of this arrangement is that during the use of this test equipment, the pull rod connector connected to the front end of the toothed rod will stretch or retract the fixed bag pull rod, simulating the stretching operation in actual use. During this process, the buffer spring plays a role in buffering and shock absorption, preventing the impact force generated during transmission from damaging the equipment and the pull rod.
[0013] This utility model has the following beneficial effects:
[0014] (1) By setting up a guide rail, clamping rod and limiting frame, the force is transmitted to the guide rail during the test, ensuring the smoothness of the entire fixing component during the test movement. The limiting frame can perform preliminary and accurate positioning of the bag handle, making it easy to place. The cylinder pushes the stop block and the fixing block to clamp the handle. The staggered fixing blocks can apply pressure from multiple directions to firmly fix the handle, ensuring that the handle will not loosen or shift during the test, thus ensuring the accuracy and reliability of the test data.
[0015] (2) This utility model uses a buffer spring, a pull rod connector and a toothed rod to attach the top handle of the pull rod to the top of the pull rod connector and fix it through the top groove of the pull rod connector. The pull rod connector connected to the front end of the toothed rod will then stretch or retract the fixed bag pull rod, simulating the stretching operation in actual use. During this process, the buffer spring plays a buffering and shock-absorbing role, avoiding the impact force generated during the transmission process from damaging the equipment and the pull rod.
[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the main structure of the present utility model;
[0019] Figure 2 This is a schematic diagram of the main structure of the fixing component of this utility model;
[0020] Figure 3 This is a partial cross-sectional structural diagram of the tensile testing equipment of this utility model;
[0021] Figure 4 This is a partial cross-sectional structural diagram of the tensile testing equipment of this utility model;
[0022] The attached diagram lists the components represented by each number as follows:
[0023] In the diagram: 1. Tensile testing equipment; 101. Platform; 102. Side frame; 103. Motor; 104. Head gear; 105. Drive shaft; 106. Drive gear; 107. Connecting pulley; 108. Tooth block; 109. Gear; 110. Buffer spring; 111. Tooth rack; 112. Tie rod joint; 113. Guide groove; 2. Fixing assembly; 201. Guide rail; 202. Sliding component; 203. Fixing frame; 204. Limiting frame; 205. Fixing block; 206. Abutment block; 207. Clamping block; 208. Cylinder. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figures 1-4As shown, this utility model is a fatigue testing device for luggage pull rods, including a tensile testing device 1 and a fixing component 2. The fixing component 2 includes a platform 101, a guide rail 201 fixedly installed on the upper surface of the platform 101, a slide member 202 slidably connected to the top outer wall of the guide rail 201, a fixing frame 203 fixedly connected to the upper surface of the slide member 202, and limit frames 204 fixedly installed on the left and right inner walls of the fixing frame 203. Fixing blocks 205 are fixedly installed on the top left and right outer walls of the platform 101 parallel to the limit frames 204. A stop block 206 is installed on the side of the two fixing blocks 205 that are close to each other. A cylinder 208 is installed on the inner wall of the left stop block 206. The air rod end of the cylinder 208 is connected to the adjacent stop block 206. Fixing blocks 205 are fixedly installed on the side of the two stop blocks 206 that are adjacent to each other. The two sets of fixing blocks 205 are respectively staggered in the slots of the two sets of limit frames 204. The purpose of this setup is that, during the use of the testing equipment, the luggage handle is placed inside the fixed frame 203, and the top handle of the handle is sleeved onto the top of the handle connector 112. It is then fixed by the top groove of the handle connector 112, and initial positioning is achieved using the limit frame 204. The cylinder 208 is activated, and the air rod pushes the stop block 206 to move, causing the staggered fixing blocks 205 to clamp and fix the luggage handle. The motor 103 is turned on, and the first gear 104 at the motor shaft rotates. Through meshing with the connecting wheel 107, it drives the top drive shaft 105 to rotate. The gear 109 on the top drive shaft 105 meshes with the top drive gear 106, and simultaneously, several drive gears 106 mesh with each other, sequentially transmitting power to each drive shaft 105. When the bottom drive shaft 105 rotates, the toothed block 108 fixedly sleeved on it rotates accordingly, meshing with the toothed rod 111, causing the toothed rod 111 to move linearly within the guide groove 113. The handle connector connected to the front end of the toothed rod 111... 112 will then stretch or retract the fixed luggage handle, simulating the stretching operation in actual use. During this process, the buffer spring 110 plays a buffering and shock-absorbing role, avoiding damage to the equipment and handle caused by the impact force generated during transmission. The above actions are repeated continuously to achieve fatigue testing of the luggage handle. The slider 202 cooperates with the guide rail 201 to achieve the sliding function along the guide rail, driving the fixed frame 203 and the luggage handle inside to move in position, so as to cooperate with the handle joint 112 for tensile testing. During the test, the force is transferred to the guide rail to ensure the smoothness of the entire fixed assembly during the test movement. The limit frame 204 can perform preliminary accurate positioning of the luggage handle for easy placement. The cylinder 208 pushes the stop block 206 and the fixing block 205 to clamp the handle. The staggered fixing blocks 205 can apply pressure from multiple directions to firmly fix the handle, ensuring that the handle will not loosen or shift during the test, and ensuring the accuracy and reliability of the test data.
[0026] A side frame 102 is fixedly connected to the top side of the platform 101. A motor 103 is fixedly installed on the top inner wall of the side frame 102, and a first gear 104 is installed on the shaft end of the motor 103. The purpose of this arrangement is that during the use of the testing equipment, when the motor 103 is turned on, the first gear 104 on the motor shaft end rotates, and through meshing with the connecting wheel 107, it drives the top transmission shaft 105 to rotate. The gear 109 on the top transmission shaft 105 meshes with the top transmission gear 106, and at the same time, several transmission gears 106 mesh with each other.
[0027] A row of drive shafts 105 is rotatably connected from top to bottom on the inner wall of the side frame 102. The first gear 104 is perpendicular to the top of the row of drive shafts 105. A connecting wheel 107 is fixedly mounted on the outer wall of the top drive shaft 105, and the connecting wheel 107 meshes with the first gear 104. The purpose of this arrangement is to ensure that during the use of this testing equipment…
[0028] A gear 109 is fixedly sleeved on the outer wall of one end of the top drive shaft 105, and a transmission gear 106 is fixedly sleeved on the outer wall of one end of the other drive shafts 105. Several transmission gears 106 mesh with each other, and gears 109 mesh with the top drive gears 106. The purpose of this arrangement is that during the use of the testing equipment, the top drive shaft 105 is driven to rotate by meshing with the connecting wheel 107. The gears 109 on the top drive shaft 105 mesh with the top drive gears 106, and at the same time, several transmission gears 106 mesh with each other, transmitting power to each drive shaft 105 in sequence. When the bottom drive shaft 105 rotates, the tooth block 108 fixedly sleeved on it rotates accordingly and meshes with the rack 111, driving the rack 111 to move linearly within the guide groove 113.
[0029] A toothed block 108 is fixedly sleeved on the outer wall of the bottom drive shaft 105. A guide groove 113 is opened on the front outer wall of the side frame 102. A pull rod connector 112 is slidably connected to the inner wall of the guide groove 113, and the tail end of the pull rod connector 112 extends to the inner wall of the side frame 102. The purpose of this arrangement is that during the use of this test equipment, the top handle of the pull rod is sleeved on the top of the pull rod connector 112 and fixed by the top groove of the pull rod connector 112. The toothed block 108 rotates accordingly and meshes with the toothed rod 111, causing the toothed rod 111 to move linearly in the guide groove 113. The pull rod connector 112 connected to the front end of the toothed rod 111 will then stretch or retract the fixed bag pull rod, simulating the stretching operation in actual use.
[0030] A toothed rod 111 is fixedly connected to the tail end of the pull rod connector 112. A toothed block 108 meshes with the toothed rod 111. A buffer spring 110 is fixedly installed on the top inner wall of the side frame 102, with its bottom end fixedly connected to the top end of the toothed rod 111. This design ensures that during the use of the test equipment, the pull rod connector 112 connected to the front end of the toothed rod 111 will stretch or retract the fixed luggage pull rod, simulating the stretching operation in actual use. During this process, the buffer spring 110 acts as a buffer and shock absorber, preventing damage to the equipment and pull rod from the impact force generated during transmission.
[0031] When in use, place the luggage handle in the fixed frame 203, attach the top handle of the handle to the top of the handle joint 112, fix it through the top groove of the handle joint 112, use the limit frame 204 for initial positioning, start the cylinder 208, the air rod pushes the stop block 206 to move, so that the staggered fixed blocks 205 clamp and fix the luggage handle;
[0032] When the motor 103 is turned on, the first gear 104 at the end of the motor shaft rotates. Through meshing with the connecting wheel 107, it drives the top transmission shaft 105 to rotate. The gear 109 on the top transmission shaft 105 meshes with the top transmission gear 106. At the same time, several transmission gears 106 mesh with each other, transmitting power to each transmission shaft 105 in sequence. When the bottom transmission shaft 105 rotates, the tooth block 108 fixedly sleeved on it rotates accordingly and meshes with the rack 111, driving the rack 111 to make linear motion in the guide groove 113. The pull rod joint 112 connected to the front end of the rack 111 will then stretch or retract the fixed luggage pull rod, simulating the stretching operation in actual use. During this process, the buffer spring 110 plays a buffering and shock-absorbing role, avoiding damage to the equipment and pull rod caused by the impact force generated during the transmission process. The above actions are repeated continuously to achieve fatigue testing of the luggage pull rod.
[0033] The slider 202 cooperates with the guide rail 201 to achieve the sliding function along the guide rail, driving the fixed frame 203 and the internal luggage pull rod to move in position, so as to cooperate with the pull rod joint 112 for tensile testing. During the test, the force is transferred to the guide rail to ensure the smoothness of the entire fixed assembly during the test movement. The limit frame 204 can perform preliminary and accurate positioning of the luggage pull rod for easy placement. The cylinder 208 pushes the stop block 206 and the fixing block 205 to clamp the pull rod. The staggered fixing blocks 205 can apply pressure from multiple directions to firmly fix the pull rod, ensuring that the pull rod will not loosen or shift during the test, and ensuring the accuracy and reliability of the test data.
[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A fatigue testing device for luggage pull rods, comprising a tensile testing device (1) and a fixing component (2), characterized in that: The fixing component (2) includes a platform (101), on which a guide rail (201) is fixedly mounted. A slider (202) is slidably connected to the top outer wall of the guide rail (201). A fixing frame (203) is fixedly connected to the upper surface of the slider (202). Limiting frames (204) are fixedly mounted on the left and right inner walls of the fixing frame (203). The platform (101) is parallel to the top left and right outer walls of the limiting frame (204). A fixing block (205) is fixedly installed on the upper part. A stop block (206) is installed on the side of the two fixing blocks (205) that are close to each other. A cylinder (208) is installed on the inner wall of the left stop block (206). The air rod end of the cylinder (208) is connected to the adjacent stop block (206). A fixing block (205) is fixedly installed on the side of the two stop blocks (206) that are close to each other. The two sets of fixing blocks (205) are respectively staggered in the slots of the two sets of limit frames (204).
2. The fatigue testing device for luggage pull rods according to claim 1, characterized in that: A side frame (102) is fixedly connected to the top side of the platform (101), and a motor (103) is fixedly installed on the top inner wall of the side frame (102). A first gear (104) is installed on the shaft end of the motor (103).
3. The fatigue testing device for luggage pull rods according to claim 2, characterized in that: A row of drive shafts (105) is rotatably connected from top to bottom on the inner wall of the side frame (102). The first gear (104) is perpendicular to the row of drive shafts (105) directly above. A connecting wheel (107) is fixedly installed on the outer wall of the top drive shaft (105). The connecting wheel (107) meshes with the first gear (104).
4. The fatigue testing device for luggage pull rods according to claim 3, characterized in that: A gear (109) is fixedly sleeved on the outer wall of one end of the top drive shaft (105), and a drive gear (106) is fixedly sleeved on the outer wall of one end of the other drive shafts (105). Several drive gears (106) mesh with each other, and the gear (109) meshes with the top drive gear (106).
5. The fatigue testing device for luggage pull rods according to claim 4, characterized in that: A toothed block (108) is fixedly sleeved on the outer wall of the bottom drive shaft (105). A guide groove (113) is opened on the front outer wall of the side frame (102). A pull rod joint (112) is slidably connected on the inner wall of the guide groove (113). The tail end of the pull rod joint (112) extends to the inner wall of the side frame (102).
6. The fatigue testing device for luggage pull rods according to claim 5, characterized in that: The tail end of the pull rod connector (112) is fixedly connected to a toothed rod (111), the toothed block (108) is meshed with the toothed rod (111), and a buffer spring (110) is fixedly installed on the top inner wall of the side frame (102), the bottom end of the buffer spring (110) is fixedly connected to the top end of the toothed rod (111).