Tension testing device for backpack production

Abstract

The utility model relates to the technical field of tension testing, and particularly discloses a tension testing device for knapsack production, which comprises a supporting mechanism, a tension testing mechanism arranged on the supporting mechanism, and a limiting mechanism arranged on the supporting mechanism and the tension testing mechanism and used for performing tension limiting on a knapsack, the limiting mechanism comprises a limiting assembly for limiting the bag body and a tension assembly for pulling the straps; the limiting assembly comprises a mounting plate, and a limiting frame with a single-side opening is arranged at the upper end of the mounting plate. Through the arrangement of a limiting assembly and a tension assembly of the limiting mechanism, a sliding plate moves towards one side far away from a limiting frame, a bag body is arranged on the lower side of the limiting frame, the sliding plate resets under the reaction of a spring, a connecting column moves into an opening groove of the limiting frame, a pull plate on a tension frame is pushed to rotate upwards, and a strap needing to be tested sleeves the upper side of the pull plate; and then the pull plate is attached to the baffle under the action of gravity, so that the backpack can be fixed and adjusted conveniently during testing, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of tensile testing technology, and in particular to a tensile testing device for backpack production. Background Technology

[0002] Tensile testing of backpacks is widely used as a crucial step in ensuring backpack quality and reliability. This test aims to determine that key backpack components (such as shoulder straps and attachment points) can safely withstand loads under various stresses, ensuring the backpack will not break, stretch, or tear during use. An existing tensile testing device for backpack production, with publication number CN 118883271A, uses a clamping mechanism to fix the backpack body and places the two shoulder straps sequentially on levers on two sets of lifting plates. By setting up a moving mechanism and adjusting blocks, the connection state between the tensile mechanism and the lifting plates can be controlled, allowing for separate testing of the load on a single shoulder strap and the load on both shoulder straps. However, this testing device requires multiple electric push rods to clamp and fix the backpack and adjust the testing position, making the overall structure complex and inconvenient to operate. Utility Model Content

[0003] The purpose of this invention is to provide a tensile testing device for backpack production in order to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions:

[0005] A tensile testing device for backpack production includes a support mechanism, a tensile testing mechanism mounted on the support mechanism, and a limiting mechanism mounted on the support mechanism and the tensile testing mechanism for limiting the tensile force on the backpack. The limiting mechanism includes a limiting component for limiting the backpack body and a tensile component for holding the shoulder straps. The limiting component includes a mounting plate with a limiting frame with a single-sided opening at the upper end of the mounting plate. A sliding plate is slidably mounted on one side of the limiting frame, and an opening slot is provided on the limiting frame near the sliding plate. A connecting post is fixed at the upper end of the sliding plate. The tensile component includes a tensile frame fixed on the tensile testing mechanism. The tensile frame is configured as a frame with the same opening direction as the limiting frame. A pull plate is rotatably connected to one side of the lower end of the tensile frame via a pivot, and a baffle is mounted on the other side of the tensile frame.

[0006] Further details: A groove is provided on the upper surface of the mounting plate, and a guide post is provided in the groove. The guide post passes through the sliding plate, and a spring is fitted on the outer diameter of the guide post away from the limit frame.

[0007] Further details: There are two guide posts, and the sliding plate is slidably connected to the guide posts.

[0008] Further details: The connecting column is slidably connected to the opening groove, and there are two opening grooves. Limiting edges are provided on the connecting column above and below the opening grooves.

[0009] Further details: Four limiting ribs are provided at intervals on the upper surface of the pull plate.

[0010] Further settings: The lower end face of the horizontal plate of the limit frame is set as an arc surface, and the upper end face of the pull plate is set as an arc surface.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] By setting the limiting components and tension components of the limiting mechanism, the sliding plate moves away from the limiting frame, placing the bag under the limiting frame. The sliding plate resets under the spring's reaction, causing the connecting column to move into the opening slot of the limiting frame, pushing the pull plate on the tension frame to rotate upwards. The shoulder strap to be tested is then placed on the upper side of the pull plate. Afterwards, the pull plate fits against the baffle under gravity, facilitating the fixing and adjustment during backpack testing and improving operational efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0014] Figure 1 This is a structural schematic diagram of a tensile testing device for backpack production according to the present invention;

[0015] Figure 2 This is a front view structural schematic diagram of a tensile testing device for backpack production according to the present invention;

[0016] Figure 3 This is a partially exploded structural diagram of the limiting mechanism of the tensile testing device for backpack production described in this utility model;

[0017] Figure 4 This is a schematic diagram of the tensile component of a tensile testing device for backpack production according to the present invention.

[0018] The annotations in the attached figures are explained as follows:

[0019] 11. Base plate; 12. Support column; 13. Top plate; 21. Lead screw; 22. Sliding column; 23. Limiting ring; 24. Servo motor; 25. Lifting plate; 26. Tensile tester; 31. Mounting plate; 311. Sinking groove; 32. Limiting frame; 321. Opening slot; 33. Sliding plate; 34. Connecting column; 35. Guide column; 36. Spring; 37. Tension frame; 38. Pull plate; 381. Limiting rib; 39. Baffle. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] like Figures 1-4 As shown, a tensile testing device for backpack production includes a support mechanism, a tensile testing mechanism disposed on the support mechanism, and a limiting mechanism disposed on the support mechanism and the tensile testing mechanism for limiting the tensile force on the backpack.

[0024] In this embodiment: the support mechanism includes a base plate 11, with columns 12 fixed on both sides of the upper end of the base plate 11, and a top plate 13 fixed on the upper end of the columns 12. The base plate 11, columns 12 and top plate 13 form a frame for tensile testing.

[0025] In this embodiment, the tensile testing mechanism includes a lead screw 21 and a sliding column 22 vertically arranged between the base plate 11 and the top plate 13. A lifting plate 25 is provided on the lead screw 21 and the sliding column 22. A servo motor 24 is connected to the upper end of the lead screw 21. Limit rings 23 are provided at the upper and lower positions of the sliding column 22. A tensile test gauge 26 connected to the limit mechanism is connected to the lower end of the lifting plate 25. The lead screw 21 is rotatably connected to the base plate 11 and the top plate 13. The lifting plate 25 is threadedly connected to the lead screw 21 and slidably connected to the sliding column 22. When the servo motor 24 works, it drives the lead screw 21 to rotate. The lead screw 21 drives the lifting plate 25 to move as a whole under the limit of the sliding column 22, so that the tensile component at the lower end of the lifting plate 25 moves relative to the limit component.

[0026] In this embodiment: the limiting mechanism includes a limiting component for limiting the bag body and a tension component for holding the shoulder strap; the limiting component includes a mounting plate 31, a limiting frame 32 with a single-sided opening is provided on the upper end of the mounting plate 31, a sliding plate 33 is slidably provided on one side of the limiting frame 32, an opening slot 321 is provided on the limiting frame 32 near the sliding plate 33, a connecting column 34 is fixed on the upper end of the sliding plate 33, the tension component includes a tension frame 37 fixed on the tension testing mechanism, the tension frame 37 is configured as a frame with the same opening direction as the limiting frame 32, a pull plate 38 is rotatably connected to one side of the lower end of the tension frame 37 through a rotating shaft, and a baffle 39 is installed on the other side of the tension frame 37;

[0027] The upper surface of the mounting plate 31 has a recessed groove 311, within which a guide post 35 is installed. The guide post 35 passes through the sliding plate 33, and a spring 36 is fitted on the outer diameter of the guide post 35 away from the limiting frame 32. There are two guide posts 35. The sliding plate 33 is slidably connected to the guide post 35. The guide post 35 guides the movement of the sliding plate 33, and the spring 36 facilitates the sliding plate 33's return to the limiting frame 32, allowing the connecting post 34 to engage within the opening groove 321 of the limiting frame 32. The connecting post 34 is slidably connected to the opening groove 321, which has two opening grooves. Limiting edges are provided on the connecting post 34 above and below the opening groove 321. The upper surface of the pull plate 38 has four spaced limiting ribs 381 for limiting the tension of the shoulder strap during tensile testing. The lower surface of the horizontal plate of the limiting frame 32 is curved, and the upper surface of the pull plate 38 is also curved to improve the uniformity of force distribution on the bag and shoulder strap.

[0028] The working principle and usage process of this utility model are as follows: The sliding plate 33 is pushed to move away from the limiting frame 32, and the bag is placed under the limiting frame 32. The sliding plate 33 is reset under the reaction of the spring 36, so that the connecting column 34 moves into the opening slot 321 of the limiting frame 32. The pulling plate 38 on the tension frame 37 is pushed to rotate upward. The shoulder strap to be tested is put on the upper side of the pulling plate 38. Then, the pulling plate 38 is in contact with the baffle 39 under the action of gravity. The servo motor 24 drives the lead screw 21 to rotate. The lead screw 21 drives the lifting plate 25 to move upward under the limitation of the sliding column 22, so that the lower end of the lifting plate 25 pulls the shoulder strap upward, forming a tension test on the bag with the limiting component.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A tensile test device for backpack production, comprising a supporting mechanism, wherein a tensile test mechanism is arranged on the supporting mechanism, characterized in that: The supporting mechanism and the tension test mechanism are provided with a limiting mechanism for limiting the tension of the backpack, which comprises a limiting assembly for limiting the body of the backpack and a tension assembly for pulling the shoulder straps; the limiting assembly comprises a mounting plate (31) provided at the upper end with a one-side opening limiting frame (32), the limiting frame (32) is provided at one side with a sliding plate (33) in sliding connection, the limiting frame (32) is provided at the upper end near the one side of the sliding plate (33) with an opening slot (321), the sliding plate (33) is fixed at the upper end with a connecting column (34), and the tension assembly comprises a tension frame (37) fixed on the tension test mechanism, the tension frame (37) is provided as a frame body with the same opening direction as the limiting frame (32), the tension frame (37) is rotatably connected at the lower end of one side with a pull plate (38) through a rotating shaft, and the other side of the tension frame (37) is provided with a baffle (39).

2. The tensile testing device for backpack production of claim 1, wherein: A sinking groove (311) is formed in the upper end surface of the mounting plate (31), a guide column (35) is arranged in the sinking groove (311), the guide column (35) penetrates through the sliding plate (33), and a spring (36) is sleeved on the outer diameter of the guide column (35) away from the limiting frame (32).

3. The tensile testing device for backpack production of claim 2, wherein: The guide column (35) is provided with two parts, and the sliding plate (33) is in sliding connection with the guide column (35).

4. The tensile testing device for backpack production of claim 1, wherein: The connecting column (34) is in sliding connection with the opening slot (321), the opening slot (321) is provided with two parts, and the connecting column (34) is provided at the upper and lower parts of the opening slot (321) with limiting edges.

5. The tensile testing device for backpack production of claim 1, wherein: Four limiting ribs (381) are arranged at intervals on the upper end surface of the pull plate (38).

6. The tensile testing device for backpack production of claim 1, wherein: The lower end surface of the horizontal plate of the limiting frame (32) is provided as an arc surface, and the upper end surface of the pull plate (38) is provided as an arc surface.

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