A tensile testing device for backpack production

Abstract

The present invention relates to the technical field of tension testing devices, and specifically to a tension testing device for backpack production, comprising a base, a frame provided on the upper surface of the base, a tension mechanism provided on the top of the frame, a clamping mechanism provided at the center of the upper surface of the base, lifting plates provided on both sides of the inner surface of the frame, the lifting plates can move up and down along the frame, the bottoms of the lifting plates are fixedly connected to sleeve rods, and the upper surfaces of the two groups of lifting plates are provided with connecting grooves that are interconnected. The present invention uses the clamping mechanism to fix the backpack body, and places the two straps of the backpack on the sleeve rods on the two groups of lifting plates in turn, and by setting a moving mechanism to cooperate with the adjusting block, it is possible to control the connection state of the tension mechanism and the lifting plate, so that the load of a single strap and the load of double straps can be tested respectively, and when testing the load of a single strap and the load of double straps, there is no need to switch the connection points between the backpack straps and the tension mechanism multiple times, which is convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of tension testing devices, in particular to a tension testing device used for backpack production. Background Art

[0002] As an essential item in modern life, backpacks' quality and durability are paramount. Every day, millions of people rely on backpacks to carry books, electronic devices, food, and other essentials, whether they're at school, at work, or traveling. Given these daily demands, backpacks must be designed and manufactured to withstand the test of time, ensuring they can reliably carry their belongings, whether in everyday use or in challenging environments.

[0003] Tensile testing of backpacks is a critical step in ensuring their quality and reliability, and is widely used. This test ensures that key backpack components (such as shoulder straps and mounting points) can safely withstand loads under various stresses, ensuring the backpack will not break, stretch, or damage during use. Currently, tensile testing devices test the load capacity of backpack straps separately for both single and double straps. This process requires the user to repeatedly switch the connection points between the backpack straps and the tensile testing device, which is quite inconvenient. Therefore, we propose a tensile testing device for backpack production. Summary of the Invention

[0004] The purpose of the present invention is to provide a tensile testing device for backpack production to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tensile testing device for backpack production, comprising a base, a frame body is provided on the upper surface of the base, a tensile mechanism is provided on the top of the frame body, a clamping mechanism is provided at the center of the upper surface of the base, lifting plates are provided on both sides of the inner surface of the frame, the lifting plates can move up and down along the frame body, sleeve rods are fixedly connected to the bottoms of the lifting plates, connecting grooves that are interconnected are provided on the upper surfaces of two groups of the lifting plates, connecting sliders are cooperatively installed in the connecting grooves, and an adjusting block is fixedly connected to the upper surface of the connecting slider, and a moving mechanism is provided on one side of the upper surface of one group of the lifting plates, and the moving mechanism is used to push the adjusting block;

[0006] The moving mechanism includes a vertical plate fixedly mounted on the upper surface of the lifting plate, the upper end of the vertical plate is fixedly connected to a first electric push rod, the first electric push rod is horizontally arranged, the moving end of the first electric push rod is fixedly connected to a sleeve plate, the sleeve plate is sleeved on the outer surface of the adjustment block, the sleeve plate and the adjustment block move relative to each other in the vertical direction, and the center of the upper surface of the adjustment block is connected to the tension mechanism through a connecting rope.

[0007] Preferably, the connecting grooves and the connecting sliders are configured as matching inverted T-shaped structures, and the lengths of the two groups of connecting grooves are equal to the lengths of the connecting sliders.

[0008] Preferably, the pulling mechanism includes a second electric push rod fixedly mounted on the top of the frame, the second electric push rod is vertically arranged, the moving end of the second electric push rod is fixedly connected to a connecting seat, and the connecting seat is fixedly connected to the upper end of the connecting rope.

[0009] Preferably, the top of the adjusting block is fixedly connected to a limiting plate, and the limiting plate forms a moving interference with the sleeve plate in the vertical direction.

[0010] Preferably, both sides of the inner surface of the frame are provided with slide grooves, and slide plates are installed inside the slide grooves. The slide plates form a moving pair inside the slide grooves, and two groups of the slide plates are fixedly connected to two groups of lifting plates respectively.

[0011] Preferably, an elastic mechanism is provided inside the chute, and in a natural state, the elastic mechanism enables the slide plate to be located at the bottom of the chute.

[0012] Preferably, when the two groups of lifting plates are located at the bottom of the slide groove, the sleeve plate is located at the top of the adjustment block.

[0013] Preferably, the elastic mechanism includes guide rods fixedly installed inside the slide groove, the surface of the slide plate is provided with through holes adapted to the guide rods, the guide rods pass through the through holes, and a spring is sleeved on the surface of the guide rods, the upper end of the spring is fixedly connected to the inner surface of the slide groove, and the lower end of the spring is fixedly connected to the slide plate.

[0014] Preferably, the clamping mechanism includes a clamping seat fixedly mounted on the upper surface of the base, a side plate fixedly connected to one side of the upper surface of the clamping seat, a third electric push rod fixedly connected to the side plate, a movable splint fixedly connected to the telescopic end of the third electric push rod, and a fixed splint fixedly connected to the side of the upper surface of the clamping seat opposite to the movable splint.

[0015] Preferably, a gap is provided between the two groups of sleeve rods, and the clamping mechanism is located between the two groups of sleeve rods.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Before performing a backpack tension test, the present invention places the backpack body between a movable splint and a fixed splint, and drives the third electric push rod to extend, driving the movable splint to move, so that the backpack is clamped between the movable splint and the fixed splint to fix the backpack body, and the two shoulder straps of the backpack are placed on the sleeve rods on the two sets of lifting plates in sequence.

[0018] 2. The present invention uses a clamping mechanism to fix the backpack body, and places the two straps of the backpack on the sleeve rods on the two sets of lifting plates in sequence. By setting a moving mechanism and cooperating with an adjustment block, the connection state of the tension mechanism and the lifting plate can be controlled, so that the load of a single strap and the load of two straps can be tested respectively. When testing the load of a single strap and the load of two straps, there is no need to switch the connection points between the backpack straps and the tension mechanism multiple times, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a cross-sectional view of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the lifting plate, sleeve rod and slide plate of the present invention;

[0022] Figure 4 This is a structural diagram of the adjustment block and the limiting plate of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the mobile mechanism of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the clamping mechanism of the present invention;

[0025] Figure 7 For the present invention Figure 2 Enlarged view of point A in the middle.

[0026] In the accompanying drawings, the list of components represented by each number is as follows: 1. Base; 2. Frame; 3. Connecting seat; 4. First electric push rod; 5. Connecting rope; 6. Adjusting block; 7. Lifting plate; 8. Clamping seat; 9. Slide groove; 10. Slide plate; 11. Through hole; 12. Sleeve rod; 13. Connecting groove; 14. Connecting slider; 15. Limiting plate; 16. Second electric push rod; 17. Vertical plate; 18. Sleeve plate; 19. Side plate; 20. Third electric push rod; 21. Movable splint; 22. Fixed splint; 23. Guide rod; 24. Spring. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 7, the figure shows a tensile testing device for backpack production, including a base 1, a frame 2 is provided on the upper surface of the base 1, a tensile mechanism is provided on the top of the frame 2, a clamping mechanism is provided in the center of the upper surface of the base 1, and lifting plates 7 are provided on both sides of the inner surface of the frame 2. The lifting plates 7 can move up and down along the frame 2, and the bottoms of the lifting plates 7 are fixedly connected to sleeve rods 12. The upper surfaces of the two groups of lifting plates 7 are provided with connecting grooves 13 that are interconnected, and connecting sliders 14 are installed in the connecting grooves 13. The upper surface of the connecting slider 14 is fixedly connected to an adjusting block 6, and a moving mechanism is provided on one side of the upper surface of one group of lifting plates 7, and the moving mechanism is used to push the adjusting block 6;

[0029] The moving mechanism includes a vertical plate 17 fixedly mounted on the upper surface of the lifting plate 7, the upper end of the vertical plate 17 is fixedly connected to the first electric push rod 4, the first electric push rod 4 is horizontally arranged, and the moving end of the first electric push rod 4 is fixedly connected to the sleeve plate 18, the sleeve plate 18 is sleeved on the outer surface of the adjusting block 6, the sleeve plate 18 and the adjusting block 6 move relative to each other in the vertical direction, and the center of the upper surface of the adjusting block 6 is connected to the tension mechanism through the connecting rope 5.

[0030] Furthermore, the connecting grooves 13 and the connecting sliders 14 are configured as matching inverted T-shaped structures, and the lengths of the two groups of connecting grooves 13 are equal to those of the connecting sliders 14 .

[0031] Furthermore, a limit plate 15 is fixedly connected to the top of the adjustment block 6 , and the limit plate 15 forms a moving interference with the sleeve plate 18 in the vertical direction. By setting the limit plate 15 , this embodiment can prevent the sleeve plate 18 from slipping off the adjustment block 6 .

[0032] In this embodiment, the backpack body is fixed by a clamping mechanism, and the two straps of the backpack are placed on the sleeve rods 12 on the two sets of lifting plates 7 in sequence. By setting a moving mechanism to cooperate with the adjusting block 6, the connection state of the tension mechanism and the lifting plate 7 can be controlled, so that the load of a single strap and the load of a double strap can be tested respectively. Specifically, the first electric push rod 4 is driven to move, which drives the adjusting block 6 to move. When the connecting slider 14 on the adjusting block 6 is respectively located in the connecting groove 13 on the two sets of lifting plates 7, the tension mechanism can thereby detect the load of the two sets of single straps; when the connecting slider 14 on the adjusting block 6 is located between the two sets of connecting grooves 13, the tension mechanism can detect the load of the double straps; in the above process, there is no need to switch the connection points between the backpack straps and the tension mechanism multiple times, which is convenient to use.

[0033] In this embodiment, by setting the adjustment block 6 to cooperate with the sleeve plate 18, when the first electric push rod 4 drives the adjustment block 6 to move to another set of lifting plates 7, since the adjustment block 6 and the sleeve plate 18 can move in the vertical direction, when the tension test can be met, the two sets of lifting plates 7 can move relative to each other in the vertical direction.

[0034] Furthermore, the pulling mechanism includes a second electric push rod 16 fixedly mounted on the top of the frame 2. The second electric push rod 16 is vertically arranged. The movable end of the second electric push rod 16 is fixedly connected to the connecting seat 3. The connecting seat 3 is fixedly connected to the upper end of the connecting rope 5.

[0035] In this embodiment, the second electric push rod 16 is driven to move the connecting seat 3, the connecting rope 5, the adjusting block 6 and the lifting plate 7 upward, thereby realizing the tension detection of the backpack straps.

[0036] Furthermore, slide grooves 9 are provided on both sides of the inner surface of the frame 2, and slide plates 10 are installed inside the slide grooves 9. The slide plates 10 form a moving pair inside the slide grooves 9, and the two groups of slide plates 10 are fixedly connected to the two groups of lifting plates 7 respectively.

[0037] Furthermore, an elastic mechanism is provided inside the chute 9 , and in a natural state, the elastic mechanism enables the slide plate 10 to be located at the bottom of the chute 9 .

[0038] Furthermore, when the two sets of lifting plates 7 are located at the bottom of the chute 9 , the sleeve plate 18 is located at the top of the adjustment block 6 .

[0039] Furthermore, the elastic mechanism includes guide rods 23 fixedly installed inside the slide groove 9, and the surface of the skateboard 10 is provided with through holes 11 adapted to the guide rods 23. The guide rods 23 pass through the through holes 11, and a spring 24 is sleeved on the surface of the guide rods 23. The upper end of the spring 24 is fixedly connected to the inner surface of the slide groove 9, and the lower end of the spring 24 is fixedly connected to the skateboard 10.

[0040] In this embodiment, by setting a slide groove 9 to cooperate with the slide plate 10, the lifting plate 7 can move up and down inside the slide groove 9, which can meet the tension mechanism's detection of slight deformation of the shoulder strap when the backpack is detected, and by setting an elastic mechanism, when the lifting plate 7 cooperates with the tension mechanism to detect and move up along the slide groove 9, the slide plate 10 on the lifting plate 7 moves up along the guide rod 23 and squeezes the spring 24 on the guide rod 23 to compress the spring 24. After the tension detection is completed, the compressed spring 24 extends, thereby driving the slide plate 10 and the lifting plate 7 to move back to the initial position.

[0041] Furthermore, the clamping mechanism includes a clamping seat 8 fixedly mounted on the upper surface of the base 1, a side plate 19 fixedly connected to one side of the upper surface of the clamping seat 8, a third electric push rod 20 fixedly connected to the side plate 19, a movable splint 21 fixedly connected to the telescopic end of the third electric push rod 20, and a fixed splint 22 fixedly connected to the side of the upper surface of the clamping seat 8 opposite to the movable splint 21.

[0042] In this embodiment, before performing the backpack tension test, the backpack body is placed between the movable splint 21 and the fixed splint 22, and the third electric push rod 20 is driven to extend, driving the movable splint 21 to move, so that the backpack is clamped between the movable splint 21 and the fixed splint 22 to fix the backpack body.

[0043] Furthermore, a gap is provided between the two sets of sleeve rods 12 , and the clamping mechanism is located between the two sets of sleeve rods 12 .

[0044] In this embodiment, a gap is provided between the two sets of sleeve rods 12 so that the backpack straps can be sleeved on the sleeve rods 12 through the gap.

[0045] It should be noted that in this embodiment, a battery assembly is provided on the frame 2 or any other location to provide power to the first, second, and third electric push rods 4, 16, and 20. Furthermore, corresponding buttons are provided on the outer surface of the frame 2. Pressing the buttons can control the on / off switching of the first, second, and third electric push rods 4, 16, and 20. The circuits and associated driver programs involved are conventional technologies and are not described in detail here. Furthermore, if automatic control is desired, a controller can be added to coordinate with the first, second, and third electric push rods 4, 16, and 20. The controller can control the timing and length of the extension and retraction of the first, second, and third electric push rods 4, 16, and 20 according to actual usage. A single-chip microcomputer can be used as the controller. A single-chip microcomputer comprises an arithmetic unit, memory, and input / output devices, and is equivalent to a microcomputer. Compared to general-purpose microprocessors used in personal computers, single-chip microcomputers emphasize self-sufficiency (no external hardware required) and cost savings. Its biggest advantage is that it is small in size and can be placed inside the instrument, but has a small storage capacity, simple input and output interfaces, and low functional consumption. In this embodiment, the model of the single-chip microcomputer is not required.

[0046] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A tensile testing device for backpack production, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a frame (2), the top of the frame (2) is provided with a pulling mechanism, the center of the upper surface of the base (1) is provided with a clamping mechanism, both sides of the inner surface of the frame (2) are provided with lifting plates (7), the lifting plates (7) can move up and down along the frame (2), the bottoms of the lifting plates (7) are fixedly connected with sleeve rods (12), the upper surfaces of the two groups of lifting plates (7) are provided with connecting grooves (13) that are interconnected, the inner parts of the connecting grooves (13) are fitted with connecting sliders (14), the upper surfaces of the connecting sliders (14) are fixedly connected with an adjusting block (6), one side of the upper surface of one group of the lifting plates (7) is provided with a moving mechanism, the moving mechanism is used to push the adjusting block (6); The moving mechanism includes a vertical plate (17) fixedly mounted on the upper surface of the lifting plate (7), the upper end of the vertical plate (17) is fixedly connected to a first electric push rod (4), the first electric push rod (4) is arranged horizontally, the moving end of the first electric push rod (4) is fixedly connected to a sleeve plate (18), the sleeve plate (18) is sleeved on the outer surface of the adjustment block (6), the sleeve plate (18) and the adjustment block (6) move relative to each other in the vertical direction, and the center of the upper surface of the adjustment block (6) is connected to the tension mechanism through a connecting rope (5); The connecting grooves (13) and the connecting sliders (14) are configured as matching inverted T-shaped structures, and the lengths of the two groups of connecting grooves (13) are equal to those of the connecting sliders (14); The pulling mechanism comprises a second electric push rod (16) fixedly mounted on the top of the frame (2), the second electric push rod (16) being vertically arranged, the movable end of the second electric push rod (16) being fixedly connected to a connecting seat (3), and the connecting seat (3) being fixedly connected to the upper end of the connecting rope (5); The top of the regulating block (6) is fixedly connected to a limiting plate (15), and the limiting plate (15) forms a moving interference with the sleeve plate (18) in the vertical direction; Slide grooves (9) are provided on both sides of the inner surface of the frame (2), and slide plates (10) are installed in the slide grooves (9). The slide plates (10) form a moving pair in the slide grooves (9), and two groups of the slide plates (10) are fixedly connected to the two groups of lifting plates (7) respectively. The clamping mechanism comprises a clamping seat (8) fixedly mounted on the upper surface of the base (1); a side plate (19) is fixedly connected to one side of the upper surface of the clamping seat (8); a third electric push rod (20) is fixedly connected to the side plate (19); a telescopic end of the third electric push rod (20) is fixedly connected to a movable splint (21); and a fixed splint (22) is fixedly connected to the side of the upper surface of the clamping seat (8) opposite to the movable splint (21).

2. A tensile testing device for backpack production according to claim 1, characterized in that: An elastic mechanism is provided inside the chute (9), and in a natural state, the elastic mechanism enables the slide plate (10) to be located at the bottom of the chute (9).

3. A tensile testing device for backpack production according to claim 2, characterized in that: When the two sets of lifting plates (7) are located at the bottom of the chute (9), the sleeve plate (18) is located at the top of the adjustment block (6).

4. The tensile testing device for backpack production according to claim 3, characterized in that: The elastic mechanism includes guide rods (23) fixedly mounted inside the chute (9), and the surface of the slide plate (10) is provided with through holes (11) adapted to the guide rods (23). The guide rods (23) pass through the through holes (11), and a spring (24) is sleeved on the surface of the guide rods (23). The upper end of the spring (24) is fixedly connected to the inner surface of the chute (9), and the lower end of the spring (24) is fixedly connected to the slide plate (10).

5. The tensile testing device for backpack production according to claim 4, characterized in that: A gap is provided between the two groups of sleeve rods (12), and the clamping mechanism is located between the two groups of sleeve rods (12).

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