A dynamic durability test machine for a baby stroller

Abstract

The utility model belongs to product quality detection field especially relates to a kind of baby carriage dynamic endurance test testing machine, including support seat, transmission roller and conveying belt etc., the inner upper portion of support seat is rotatably provided with multiple transmission rollers of equidistance distribution, wherein, the length of the end of last transmission roller counted from front to back is longer than other transmission rollers, conveying belt is rotatably arranged between multiple transmission rollers. Through the synergistic effect of worm gear, motor and worm, the angle of the flap turning out from the support block can be flexibly and accurately adjusted, this design enables the testing machine to simulate various roadblocks with different complexity and height difference, greatly enriching the test scene. This multi-traffic condition simulation method can more comprehensively and realistically reflect various situations that the baby carriage may encounter during actual use, thereby more accurately evaluating the structural durability and stability of the baby carriage under different road conditions.

Description

Technical Field

[0001] This utility model belongs to the field of product quality testing, and in particular relates to a dynamic durability testing machine for baby strollers. Background Technology

[0002] A baby stroller is a mode of transportation specifically designed for infants and toddlers, primarily used to help parents safely and conveniently carry and move their babies or toddlers outdoors or indoors. Common baby strollers consist of a frame, wheels, seat, sunshade, and safety belt, and can be categorized into various types based on function, such as lightweight, multi-functional, and sporty models. Dynamic durability testing involves subjecting the baby stroller to repeated forces, vibrations, and impacts under simulated real-world use conditions to assess its structural strength and long-term reliability.

[0003] Existing dynamic durability testing equipment for baby strollers typically involves placing the stroller in the designated area, securing the handle to the limiting frame, and then starting the equipment. The equipment simulates the dynamic movement of the stroller in real-world usage scenarios via a continuously rotating conveyor belt beneath it. However, practical application has revealed that most current equipment uses relatively simple and fixed obstacle settings on the conveyor belt. This single-obstacle simulation method results in insufficient test scenario variety, failing to comprehensively and realistically reflect the diverse conditions a baby stroller might face in actual use. Consequently, the assessment of the stroller's structural durability and stability under different road conditions is inaccurate, making it difficult to effectively guarantee the safety and reliability of the stroller in real-world use.

[0004] Therefore, there is a particular need for a dynamic durability testing machine for baby strollers to solve the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing equipment where the conveyor belt obstacle setting is single and fixed, making it unable to simulate diverse road conditions and affecting the accuracy of the durability and stability assessment of baby strollers, this utility model provides a dynamic durability testing machine for baby strollers.

[0006] This utility model is achieved through the following technical approach: A dynamic durability testing machine for baby strollers includes a support base, transmission rollers, a conveyor belt, a support shell, a servo motor, a retaining rod, a connecting plate, a control box, and a fixing assembly. Multiple transmission rollers are rotatably arranged at equal intervals on the upper inner part of the support base. The last transmission roller (counting from front to back) has a longer end than the other rollers. A conveyor belt rotatably connects the transmission rollers. The support shell is installed on one side of the upper part of the support base and houses a servo motor. The output shaft of the servo motor extends to the right and is fixedly connected to one end of the last transmission roller via a coupling. The connecting plate is installed on the support base. On one side, the control box is installed on the lower side of the connecting plate. The servo motor is electrically connected to the control box. The support rod is installed between the support base and the connecting plate. The fixing assembly is set on the connecting plate and also includes support blocks, flaps, rotating shafts, worm gears, motors, and worms. Multiple support blocks are fixed to the surface of the conveyor belt. A rotating shaft is fixed to each support block. A flap is rotatably installed on the outside of each rotating shaft. A worm gear is fixed to one end of each rotating shaft. A motor is installed on each support block. The output shaft of the motor extends upward and is fixed to a worm gear through a coupling. The worm gear is located on the side of the corresponding worm gear and meshes with it. The motor is electrically connected to the control box.

[0007] Furthermore, the fixing components include a support frame, a lead screw, a support plate, a transmission rod, a bevel gear set, a lifting plate, a limiting frame, a first mounting frame, and a second mounting frame. The support frame is installed on the upper part of the connecting plate, the lead screw is rotatably mounted on the upper part of the connecting plate, the support plate is installed on the rear part of the enclosure, and a transmission rod is rotatably mounted on it. The bevel gear set is located between one end of the lead screw and one end of the transmission rod. The lifting plate is threaded on the outside of the lead screw and slides with the support frame. The limiting frame is installed on one side of the lifting plate. Two first mounting frames are arranged side by side and slide and rotatably mounted on the rod-shaped part of the limiting frame. Each first mounting frame has a circular slot at one end. Two second mounting frames are arranged side by side and slide and rotatably mounted on the rod-shaped part of the limiting frame. Each second mounting frame has an n-shaped slot at one end.

[0008] Furthermore, it also includes a rotating disk, with the rotating disk fixed to the other end of the transmission rod near the control box.

[0009] Furthermore, it also includes a protective shell, with a protective shell fixed to each support block, which covers the corresponding worm gear, motor and worm.

[0010] Furthermore, the conveyor belt is a rubber conveyor belt.

[0011] Furthermore, a handle is provided on one side of the rotating disc.

[0012] Beneficial effects: 1. Through the coordinated action of the worm gear, motor and worm, the angle at which the flap rotates out from the support block can be flexibly and precisely adjusted. This design enables the testing machine to simulate various road obstacles of different complexity and height difference, greatly enriching the test scenarios. This multi-road condition simulation method can more comprehensively and realistically reflect the various situations that the stroller may encounter in actual use, thereby more accurately evaluating the structural durability and stability of the stroller under different road conditions.

[0013] 2. By sliding the limit frame onto the support frame and combining it with the transmission rod and bevel gear set in the drive assembly, the height of the limit frame can be flexibly adjusted. Operators can quickly adjust the limit frame to a suitable position according to the actual height of the push handle of different models of baby strollers, so as to accurately match the push handle height of the stroller being tested, thereby improving the adaptability and ease of operation of the equipment. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the retaining wall, connecting plate, and control box.

[0016] Figure 3 This is a three-dimensional structural diagram of the conveyor belt, support shell, and servo motor components of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the support frame, lead screw, and support plate of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the transmission rod, rotating disk, and bevel gear set of this utility model.

[0019] Figure 6 This is a three-dimensional structural diagram of the transmission rod, rotating disk, and bevel gear set of this utility model.

[0020] Figure 7 This is a three-dimensional structural diagram of the support block, flap, and protective shell components of this utility model.

[0021] Figure 8 This is a three-dimensional structural diagram of the worm gear, motor, and worm shaft components of this utility model.

[0022] In the attached diagram, the following are the reference numerals: 1. Support base; 2. Transmission roller; 3. Conveyor belt; 4. Support shell; 5. Servo motor; 6. Enclosure rod; 7. Connecting plate; 8. Control box; 9. Support frame; 10. Lead screw; 11. Support plate; 12. Transmission rod; 13. Rotary disc; 14. Bevel gear set; 15. Lifting plate; 16. Limiting frame; 17. First mounting frame; 18. Second mounting frame; 19. Support block; 20. Flip plate; 21. Rotating shaft; 22. Worm gear; 23. Motor; 24. Worm; 25. Protective shell. Detailed Implementation

[0023] Example: A dynamic durability testing machine for baby strollers, such as Figures 1-8 As shown, the system includes a support base 1, drive rollers 2, a conveyor belt 3, a support shell 4, a servo motor 5, a retaining rod 6, a connecting plate 7, a control box 8, and a fixing assembly. Nine drive rollers 2 are rotatably arranged at equal intervals on the upper inner part of the support base 1. The left end of the last (ninth) drive roller 2 is longer than the other drive rollers 2. A conveyor belt 3, made of rubber, is rotatably arranged between the nine drive rollers 2 to increase the friction between the stroller wheels and the conveyor belt 3, thus more realistically simulating the friction between wheels and the ground on a real road surface and improving the realism of the test environment. The support shell 4 is bolted to the upper left rear part of the support base 1, and a servo motor 5 is bolted inside it. The output shaft of the servo motor 5 extends to the right and is fixedly connected to the left end of the last drive roller 2 via a coupling, providing stable power to the entire conveying system. The connecting plate 7 is bolted to the rear side of the support base 1, and the control box 8 is bolted to the lower right side of the connecting plate 7. The servo motor 5 and the control box 8 are connected to the support shell 1. The box 8 is electrically connected, and the retaining rod 6 is bolted between the support base 1 and the connecting plate 7, serving as a limit and protection function to prevent the stroller from falling off when placed on the conveyor belt 3. The fixing assembly is set on the connecting plate 7 and also includes a support block 19, a flap 20, a rotating shaft 21, a worm gear 22, a motor 23, a worm 24, and a protective shell 25. Multiple support blocks 19 are fixedly connected to the surface of the conveyor belt 3, and a rotating shaft 21 is fixedly connected to each support block 19. Each rotating shaft 21 has an external rotatable feature. The flap 20 has a worm gear 22 fixedly connected to the right end of each rotating shaft 21. A motor 23 is bolted to each support block 19. The output shaft of the motor 23 extends upward and is fixedly connected to a worm 24 via a coupling. The worm 24 is located on one side of the corresponding worm gear 22 and meshes with it. The motor 23 is electrically connected to the control box 8. A protective shell 25 is fixedly connected to each support block 19. The protective shell 25 covers the corresponding worm gear 22, motor 23 and worm 24, providing protection.

[0024] like Figure 4 , Figure 5 and Figure 6As shown, the fixed assembly includes a support frame 9, a lead screw 10, a support plate 11, a transmission rod 12, a rotating disk 13, a bevel gear set 14, a lifting plate 15, a limit frame 16, a first mounting frame 17, and a second mounting frame 18. The support frame 9 is bolted to the upper part of the connecting plate 7. The lead screw 10 is rotatably mounted on the upper part of the connecting plate 7. The support plate 11 is bolted to the rear part of the frame, and the transmission rod 12 is rotatably mounted on it. The rotating disk 13 is fixedly connected to the right end of the transmission rod 12 near the control box 8 to facilitate the rotation operation of the transmission rod 12. A grip is provided on the right side of the rotating disk 13. The bevel gear set 14 is located between the lower end of the lead screw 10 and the left end of the transmission rod 12. The lifting plate 15 is threaded on the outside of the lead screw 10 and slides with the support frame 9. The limiting frame 16 is bolted to the front side of the lifting plate 15. Two first mounting frames 17 are arranged side by side and slide and rotate on the rod-shaped part of the limiting frame 16. The lower end of each first mounting frame 17 is provided with a circular slot. Two second mounting frames 18 are arranged side by side and slide and rotate on the rod-shaped part of the limiting frame 16. The lower end of each second mounting frame 18 is provided with an n-shaped slot.

[0025] When conducting dynamic durability tests on baby strollers, the operator first places the baby stroller to be tested stably on the conveyor belt 3 to ensure that the baby stroller is in the right position and that the wheels are in full contact with the conveyor belt 3, so as to ensure stable operation during the test.

[0026] Then, holding the rotating disc 13, rotate the transmission rod 12 clockwise or counterclockwise according to the actual height of the stroller handle to be tested. During the rotation, the transmission rod 12 drives the bevel gear set 14 to rotate. The bevel gear set 14 accurately transmits power to the lead screw 10, causing the lead screw 10 to rotate counterclockwise or clockwise. Since the lifting plate 15 is threadedly engaged with the lead screw 10, and under the limiting action of the support frame 9, the rotation of the lead screw 10 will drive the lifting plate 15 to move upward or downward in a straight line along the support frame 9, thereby driving the limiting frame 16 to move synchronously. When the limiting frame 16 reaches the appropriate height and approaches the stroller handle, stop rotating the transmission rod 12.

[0027] If the bent end of the stroller handle is L-shaped, insert the bent end of the stroller handle precisely into the circular slot at the lower end of the first mounting bracket 17. If the stroller handle is n-shaped, insert the stroller handle into the n-shaped slot at the lower end of the second mounting bracket 18 to achieve a stable fixation of the handle.

[0028] After the push handle is fixed, the motor 23 is started through the control box 8. The output shaft of the motor 23 quickly drives the worm 24 to rotate. The worm 24 meshes tightly with the worm wheel 22, efficiently transmitting power to the rotating shaft 21. After receiving power, the rotating shaft 21 drives the flip plate 20 to flip outward from the support block 19 and lift it at a certain angle. By controlling the rotation direction and number of rotations of the motor 23, the different angles at which the flip plate 20 is lifted can be precisely adjusted. When the flip plate 20 is lifted at a small angle, it can simulate relatively gentle road obstacles such as the edge of a sidewalk. The stroller experiences less impact when it is rolled over. When the flip plate 20 is lifted at a large angle, it can simulate more complex and harsh road conditions such as speed bumps and small potholes. The stroller will experience greater impact and vibration when it passes over them. In this way, the stroller can repeatedly roll over these road obstacles at different angles during subsequent dynamic operation, realistically reproducing various impacts and vibrations in actual use scenarios, thereby comprehensively evaluating the durability and stability of the stroller structure.

[0029] Then, the servo motor 5 is started. The output shaft of the servo motor 5 quickly drives the last transmission roller 2 from the front to rotate. This transmission roller 2 cooperates with other transmission rollers 2 to drive the conveyor belt 3 to run smoothly through friction. The surface of the conveyor belt 3 has a large coefficient of friction. At the same time, in conjunction with the flip plate 20, it simulates the unevenness and obstacles on the actual road surface, so that the stroller experiences a variety of dynamic impacts and vibrations under the drive of the conveyor belt 3, which truly restores the actual use environment and begins the dynamic durability test. During this process, the control box 8 can monitor and record relevant data such as running time, number of movements, and speed changes in real time, providing a reliable basis for subsequent analysis.

[0030] After the test reaches the preset time and number of times, the servo motor 5 is turned off, the conveyor belt 3 stops running, and finally the push handle of the stroller is pulled out to remove the stroller from the conveyor belt 3, thus completing the entire test process.

Claims

1. A dynamic durability testing machine for baby strollers, comprising a support base (1), transmission rollers (2), a conveyor belt (3), a support shell (4), a servo motor (5), a retaining rod (6), a connecting plate (7), a control box (8), and a fixing assembly, wherein multiple transmission rollers (2) are rotatably arranged at equal intervals on the upper inner part of the support base (1), wherein, The last drive roller (2) counted from the front has a longer end than the other drive rollers (2). A conveyor belt (3) is rotatably arranged between the multiple drive rollers (2). A support shell (4) is installed on the upper side of the support base (1), and a servo motor (5) is installed inside it. The output shaft of the servo motor (5) extends to the right and is fixedly connected to one end of the last drive roller (2) through a coupling. A connecting plate (7) is installed on one side of the support base (1). A control box (8) is installed on the lower side of the connecting plate (7). The servo motor (5) is electrically connected to the control box (8). A retaining rod (6) is installed between the support base (1) and the connecting plate (7). A fixing assembly is set on the connecting plate (7). The feature is that it also includes The conveyor belt (3) includes a support block (19), a flap (20), a rotating shaft (21), a worm gear (22), a motor (23), and a worm (24). Multiple support blocks (19) are fixed to the surface of the conveyor belt (3). A rotating shaft (21) is fixed to each support block (19). A flap (20) is rotatably provided on the outside of each rotating shaft (21). A worm gear (22) is fixed to one end of each rotating shaft (21). A motor (23) is installed on each support block (19). The output shaft of the motor (23) extends upward and is fixed to a worm (24) through a coupling. The worm (24) is located on one side of the corresponding worm gear (22) and meshes with it. The motor (23) is electrically connected to the control box (8).

2. The baby stroller dynamic durability testing machine according to claim 1, characterized in that, The fixing components include a support frame (9), a lead screw (10), a support plate (11), a transmission rod (12), a bevel gear set (14), a lifting plate (15), a limiting frame (16), a first mounting frame (17), and a second mounting frame (18). The support frame (9) is installed on the upper part of the connecting plate (7). The lead screw (10) is rotatably mounted on the upper part of the connecting plate (7). The support plate (11) is installed on the rear part of the frame, and the transmission rod (12) is rotatably mounted on it. The bevel gear set (14) is located at one end of the lead screw (10) and connected to the transmission rod (12). Between one end, the lifting plate (15) is threaded on the outside of the lead screw (10) and slides with the support frame (9). The limiting frame (16) is installed on one side of the lifting plate (15). Two first mounting frames (17) are arranged side by side and slide and rotate on the rod-shaped part of the limiting frame (16). A circular slot is opened at one end of each first mounting frame (17). Two second mounting frames (18) are arranged side by side and slide and rotate on the rod-shaped part of the limiting frame (16). An n-shaped slot is opened at one end of each second mounting frame (18).

3. The baby stroller dynamic durability testing machine according to claim 2, characterized in that, It also includes a rotating disk (13), and the other end of the transmission rod (12) near the control box (8) is fixed with the rotating disk (13).

4. The baby stroller dynamic durability testing machine according to claim 3, characterized in that, It also includes a protective shell (25), with a protective shell (25) fixed to each support block (19), the protective shell (25) covering the corresponding worm gear (22), motor (23) and worm (24).

5. The baby stroller dynamic durability testing machine according to claim 4, characterized in that, The conveyor belt (3) is a rubber conveyor belt.

6. The baby stroller dynamic durability testing machine according to claim 5, characterized in that, A handle is provided on one side of the rotating disc (13).

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