Bearing force detection device of cloth backpack

Abstract

The invention relates to the technical field of cloth knapsack detection, in particular to a cloth knapsack bearing capacity detection device which comprises a fixed top plate, a hydraulic rod fixedly penetrates through the middle of the top end of the fixed top plate, a detection mechanism is arranged at the telescopic end of the hydraulic rod, and an extension mechanism is arranged on the detection mechanism. A rotary adjusting mechanism is arranged on the fixed top plate; the extension mechanism comprises a pressing block, placing grooves are formed in the two sides of the bottom end of the pressing block, the top ends of the two placing grooves communicate with square notches, rotating shafts are rotationally connected to the sides, away from each other, of the inner walls of the two square notches, and second adjusting gears are fixedly connected to the outer walls of the two rotating shafts. The outer diameters of the two second adjusting gears are both connected with adjusting toothed plates in an engaged mode. Adjustment can be performed according to the area of the bottom of the inner wall of the cloth knapsack, so that the contact area with the cloth knapsack can be increased, generated stress can be dispersed, and the bearing force detection accuracy can be improved during detection.

Description

Technical Field

[0001] The invention relates to the technical field of cloth backpack detection, and in particular to a bearing capacity detection device for a cloth backpack. Background Art

[0002] A cloth backpack refers to a backpack mainly made of cloth. This type of backpack has unique characteristics in terms of material, design and function. After the cloth backpack is produced, it needs to be tested by a load-bearing capacity detection device. The device can detect the load-bearing performance, structural stability and durability of the backpack by simulating the usage scenarios of the backpack under different weight loads.

[0003] At present, in the prior art, when testing the load-bearing capacity of a cloth backpack, a relatively small pressing block is generally used to contact the bottom of the inner wall of the cloth backpack for testing. However, due to the small area of ​​the pressing block, the stress is relatively concentrated, and the actual load-bearing condition of the cloth backpack cannot be reasonably simulated. Moreover, the measured value is lower than the actual value, resulting in inaccurate test results. In addition, it is inconvenient to adjust the cloth backpack according to the size of the caliber at will, resulting in low practicality.

[0004] In addition, during detection, the pressure will directly contact the cloth backpack, and long-term detection and use will cause wear to the pressure sensor, thereby causing the sensitive elements of the pressure sensor to deform or be damaged, resulting in inaccurate pressure signals received by the pressure sensor, resulting in reduced detection accuracy. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a load-bearing capacity detection device for a cloth backpack.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a load-bearing capacity detection device for a cloth backpack, comprising a fixed top plate, a hydraulic rod is fixedly passed through the middle of the top of the fixed top plate, a detection mechanism is arranged on the telescopic end of the hydraulic rod, an extension mechanism is arranged on the detection mechanism, and a rotation adjustment mechanism is arranged on the fixed top plate;

[0007] The extension mechanism includes a pressing block, both sides of the bottom end of the pressing block are provided with placement grooves, the tops of the two placement grooves are connected with square notches, the inner walls of the two square notches are rotatably connected to the sides away from each other with a rotating shaft, the outer walls of the two rotating shafts are fixedly connected to the second adjusting gears, the outer diameters of the two second adjusting gears are meshed and connected with adjusting tooth plates, the bottom ends of the two adjusting tooth plates are fixedly connected with an extension block for extending the overall length, the two extension blocks are slidably connected to the placement grooves, the second adjusting gear rotates to move the adjusting tooth plate, and thus moves the extension block, increasing the contact area with the bottom of the inner wall of the cloth backpack, and limiting mechanisms for limiting the second adjusting gear are provided on both sides of the top of the pressing block;

[0008] The rotation adjustment mechanism includes square holes penetrated on four sides of the top of the fixed top plate, the inner walls of the four square holes are slidably connected with square sliders, the bottom ends of the four square sliders are fixedly connected with hooks for hanging cloth backpacks of different calibers, and the distances between the four hooks are symmetrical and unequal.

[0009] Preferably, the detection mechanism includes a fixed cylinder fixedly connected to the telescopic end of the hydraulic rod, a fixed column is provided on the inner wall of the fixed cylinder, a pressure sensor for detecting the bearing capacity of the cloth backpack is fixedly connected between the fixed column and the fixed cylinder, and the fixed column and the pressing block are fixedly connected.

[0010] Preferably, the outer wall of the fixed cylinder is symmetrically fixedly connected with fixed blocks, and the top ends of the two fixed blocks are fixedly connected with guide rods for guiding and limiting and pass through the fixed top plate.

[0011] Preferably, the limiting mechanism includes a telescopic cylinder fixedly connected to both sides of the corresponding square notch at the top of the pressing block, and the inner walls of the four telescopic cylinders are each provided with a fixed disk. Tension springs for elastic reset are fixedly connected between the four groups of fixed disks and the telescopic cylinders, and the tension spring reset moves with the fixed disk.

[0012] Preferably, the tops of the inner walls of the four telescopic cylinders are fixedly connected to limit rings, the inner walls of the four limit rings are provided with telescopic columns, the four telescopic columns are fixedly connected to the fixed plate, and the movement of the fixed plate brings with it the movement of the telescopic columns.

[0013] Preferably, the top ends of the four telescopic columns are fixedly connected to connecting rods, the middle parts of the bottom ends of the two connecting rods are fixedly connected to circular columns, and the bottom ends of the two circular columns are fixedly connected to limit blocks for being stuck in the tooth grooves of the second adjusting gear and the extension blocks are limited and fixed by adjusting tooth plates.

[0014] Preferably, the rotation adjustment mechanism includes arc-shaped slide grooves opened on four sides of the top of the fixed top plate, the inner walls of the four arc-shaped slide grooves are slidably connected with arc-shaped sliders, the tops of the four arc-shaped sliders are fixedly connected with guide rings, and the outer wall of the guide ring is fixedly connected with an external gear ring.

[0015] Preferably, guide holes are formed on four sides of the top of the guide ring, and the tops of the four square sliders are fixedly connected with guide columns which are arranged and slide on the inner walls of the guide holes.

[0016] Preferably, a motor is fixedly connected to a corner of the bottom end of the fixed top plate, and a first adjusting gear is fixedly connected to a driving end of the motor via a driving shaft, and the first adjusting gear is meshingly connected to an outer gear ring.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By setting the extension mechanism, the extension plate can be extended from the placement slot, thereby increasing the exposed length of the extension plate. Therefore, it can be adjusted according to the area of ​​the bottom of the inner wall of the cloth backpack, thereby increasing the contact area with it and dispersing the stress generated, thereby improving the accuracy of the load-bearing capacity detection during the detection;

[0019] 2. By setting the extension mechanism and the limit mechanism, the limit block can be stuck in the gear groove on the adjustment gear, so that the extension plate can be adjusted to any length, thereby expanding the range of length change and increasing its practicality;

[0020] 3. By setting up the detection mechanism, the pressure sensor can be placed between the fixed column and the fixed cylinder, so as to avoid direct contact between the pressure sensor and the cloth backpack, thereby avoiding wear on the pressure sensor, preventing the sensitive element of the pressure sensor from deformation or damage, and further preventing the pressure signal received by the pressure sensor from being inaccurate, thereby improving the accuracy of the measurement result;

[0021] 4. By setting the rotating adjustment mechanism, the distance between the hooks can be changed, so that cloth backpacks of different calibers can be detected, thereby improving the practicality of the detection device, and can move synchronously during adjustment, thereby improving the adjustment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of a load-bearing capacity detection device for a cloth backpack of the present invention;

[0023] Figure 2 It is a bottom-up stereoscopic schematic diagram of a load-bearing capacity detection device for a cloth backpack of the present invention;

[0024] Figure 3It is a schematic diagram of a pressing block of a load-bearing force detection device of a cloth backpack of the present invention;

[0025] Figure 4 This is a disassembled view of a pressing block of a load-bearing force detection device of a cloth backpack of the present invention;

[0026] Figure 5 It is a vertical cross-sectional view of a telescopic cylinder of a load-bearing force detection device of a cloth backpack of the present invention;

[0027] Figure 6 It is a vertical cross-sectional view of a fixing tube of a load-bearing force detection device of a cloth backpack of the present invention;

[0028] Figure 7 It is a schematic top view of a disassembled rotary adjustment mechanism of a load-bearing force detection device of a cloth backpack of the present invention;

[0029] Figure 8 The present invention is a schematic diagram of a bottom view of a rotation adjustment mechanism of a load-bearing force detection device of a cloth backpack.

[0030] In the figure: 1. Fixed top plate; 2. External gear ring; 3. Guide ring; 4. Guide rod; 5. Hydraulic rod; 6. Guide column; 7. Guide hole; 8. Press block; 9. Motor; 10. First adjusting gear; 11. Hook; 12. Fixed cylinder; 13. Fixed block; 14. Square hole; 15. Square slider; 16. Extension block; 17. Square notch; 18. Connecting rod; 19. Telescopic cylinder; 20. Round column; 21. Second adjusting gear; 22. Adjusting tooth plate; 23. Limit block; 24. Fixed column; 25. Rotating shaft; 26. Telescopic column; 27. Limit ring; 28. Fixed disk; 29. ​​Tension spring; 30. Pressure sensor; 31. Arc slide; 32. Arc slider; 33. Placement slot. DETAILED DESCRIPTION

[0031] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0032] like Figure 1-Figure 8 The load-bearing force detection device of a cloth backpack shown in the figure comprises a fixed top plate 1, a hydraulic rod 5 is fixedly passed through the middle of the top of the fixed top plate 1, a detection mechanism is arranged on the telescopic end of the hydraulic rod 5, an extension mechanism is arranged on the detection mechanism, and a rotation adjustment mechanism is arranged on the fixed top plate 1. The extension mechanism can increase the contact area with the bottom of the inner wall of the cloth backpack, thereby avoiding the concentration of stress during detection and improving the detection accuracy. The detection mechanism can protect the pressure sensor 30 and reduce the wear thereof. The rotation adjustment mechanism can be adjusted according to the caliber of the cloth backpack to improve the practicality.

[0033] like Figure 2-Figure 4 As shown, the extension mechanism includes a pressing block 8, both sides of the bottom end of the pressing block 8 are provided with placement grooves 33, the tops of the two placement grooves 33 are connected with square notches 17, the inner walls of the two square notches 17 are rotatably connected to the side away from each other with a rotating shaft 25, the outer walls of the two rotating shafts 25 are fixedly connected with second adjusting gears 21, the outer diameters of the two second adjusting gears 21 are meshed and connected with adjusting tooth plates 22, the bottom ends of the two adjusting tooth plates 22 are fixedly connected with extension blocks 16 for extending the overall length, the two extension blocks 16 are slidably connected to the placement grooves 33, the second adjusting gear 21 rotates to move the adjusting tooth plates 22, and thus moves the extension blocks 16, increasing the contact area with the bottom of the inner wall of the cloth backpack, and both sides of the top of the pressing block 8 are provided with limiting mechanisms for limiting the second adjusting gears 21;

[0034] like Figure 2 , Figure 7 , Figure 8 As shown, the rotation adjustment mechanism includes square holes 14 penetrated on four sides of the top of the fixed top plate 1, the inner walls of the four square holes 14 are slidably connected with square sliders 15, the bottom ends of the four square sliders 15 are fixedly connected with hooks 11 for hanging cloth backpacks of different calibers, and the four hooks 11 are symmetrical with different distances between each other.

[0035] like Figure 3 , Figure 6 As shown, the detection mechanism includes a fixed cylinder 12 fixedly connected to the telescopic end of the hydraulic rod 5, a fixed column 24 is arranged on the inner wall of the fixed cylinder 12, a pressure sensor 30 for detecting the bearing force of the cloth backpack is fixedly connected between the fixed column 24 and the fixed cylinder 12, the fixed column 24 is fixedly connected to the pressing block 8, and the fixed blocks 13 are symmetrically fixedly connected to the outer wall of the fixed cylinder 12, and the tops of the two fixed blocks 13 are fixedly connected with guide rods 4 for guiding and limiting and penetrate the fixed top plate 1. Through the cooperation of the fixed cylinder 12 and the fixed column 24, the pressure sensor 30 can be protected to prevent wear during use and extend its service life, and when the fixed cylinder 12 is moved downward, the guide rod 4 is used to limit the position to prevent deflection during use.

[0036] like Figure 3-Figure 5 As shown, the limiting mechanism includes a telescopic cylinder 19 fixedly connected to both sides of the corresponding square notch 17 at the top of the pressing block 8, and the inner walls of the four telescopic cylinders 19 are provided with fixed disks 28. Tension springs 29 for elastic reset are fixedly connected between the four groups of fixed disks 28 and the telescopic cylinders 19, and the tension springs 29 reset and move the fixed disks 28. The fixed disks 28 can be moved downward by the tension springs 29, which is convenient for subsequent limiting operations.

[0037] like Figure 5As shown, the top of the inner wall of the four telescopic cylinders 19 is fixedly connected to a limit ring 27, and the inner wall of the four limit rings 27 is provided with a telescopic column 26, and the four telescopic columns 26 are fixedly connected to a fixed plate 28, and the fixed plate 28 moves with the telescopic column 26. The setting of the limit ring 27 can prevent the telescopic column 26 from leaving the range of the telescopic cylinder 19 when moving upward, and avoid the telescopic column 26 from being misplaced.

[0038] like Figure 4 As shown, the tops of the four telescopic columns 26 are fixedly connected to the connecting rods 18, the middle parts of the bottom ends of the two connecting rods 18 are fixedly connected to the circular columns 20, and the bottom ends of the two circular columns 20 are fixedly connected to the limit blocks 23 for being stuck in the tooth grooves of the second adjustment gear 21 and the extension block 16 is limited and fixed by the adjustment tooth plate 22. The limit blocks 23 are adapted to the tooth groove shapes on the second adjustment gear 21.

[0039] like Figure 7 , Figure 8 As shown, the rotation adjustment mechanism includes arc-shaped slots 31 opened on four sides of the top of the fixed top plate 1, the inner walls of the four arc-shaped slots 31 are slidably connected with arc-shaped sliders 32, the tops of the four arc-shaped sliders 32 are fixedly connected with the guide ring 3, and the outer wall of the guide ring 3 is fixedly connected with the outer gear ring 2. The guide ring 3 is limited by the arc-shaped slots 31 and the arc-shaped sliders 32, so that it can rotate stably.

[0040] like Figure 1 , Figure 7 As shown, the four sides of the top of the guide ring 3 are all provided with guide holes 7, and the tops of the four square sliders 15 are all fixedly connected with guide posts 6 arranged to slide on the inner wall of the guide holes 7. When the guide ring 3 rotates, the guide posts 6 will move in the guide holes 7.

[0041] like Figure 1 , Figure 8 As shown, a motor 9 is fixedly connected to a corner of the bottom end of the fixed top plate 1, and a first adjusting gear 10 is fixedly connected to the driving end of the motor 9 through a driving shaft, and the first adjusting gear 10 is meshed and connected with the outer gear ring 2. The motor 9 rotates with the first adjusting gear 10 through the driving shaft, thereby rotating with the outer gear ring 2 to complete the rotation operation, and the motor 9 is a prior art.

[0042] Working principle: When testing the bearing capacity of a cloth backpack, first lift the connecting rod 18 upward and move the circular column 20 and the limit block 23 upward, so that the limit block 23 leaves the tooth groove on the second adjusting gear 21, thereby releasing the limit on the second adjusting gear 21, and then rotate the second adjusting gear 21. Since the second adjusting gear 21 is meshed and connected with the adjusting tooth plate 22, the adjusting tooth plate 22 can be moved outward and the extension block 16 can be moved outward, so that the exposed length of the extension block 16 can be increased, thereby increasing the contact area between the pressing block 8 and the bottom of the inner wall of the cloth backpack, thereby preventing stress concentration and improving the detection effect;

[0043] After adjustment, the elastic action of the tension spring 29 can move the fixed plate 28 and the telescopic column 26 downward, thereby moving the connecting rod 18, the circular column 20 and the limit block 23 downward, and the limit block 23 is stuck in the tooth groove on the second adjustment gear 21, completing the limit of the second adjustment gear 21, so that any length can be adjusted, expanding the adjustment range and increasing practicality;

[0044] After the adjustment is completed, the starter motor 9 drives the first adjustment gear 10 to rotate through the drive shaft, and the first adjustment gear 10 drives the outer gear ring 2 and the guide ring 3 to rotate. Since the guide column 6 is arranged in the guide hole 7, when the guide ring 3 rotates, the guide column 6 can be moved, and then the square slider 15 and the hook 11 can be moved. Therefore, the cloth backpack can be adjusted according to the caliber size, and the cloth backpack can be hung on the hook 11 after adjustment.

[0045] After the cloth backpack is hung, the hydraulic rod 5 is started to move the fixed cylinder 12 downward. Since the fixed cylinder 12, the pressure sensor 30 and the fixed column 24 are fixedly connected, the fixed cylinder 12 and the fixed column 24 can be moved downward synchronously until the extension block 16 and the pressing block 8 contact the bottom of the inner wall of the cloth backpack and continue to move downward. The pressure sensor 30 can detect the pressing force, which can effectively detect the bearing capacity of the cloth backpack.

[0046] During detection, the pressure sensor 30 does not directly contact the inner wall of the cloth backpack, thereby avoiding wear on the pressure sensor 30 and preventing the sensitive element of the pressure sensor 30 from being deformed or damaged, thereby improving the accuracy of the detection structure.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A load-bearing capacity detection device for a cloth backpack, comprising a fixed top plate (1), Features: A hydraulic rod (5) is fixedly passed through the middle of the top of the fixed top plate (1), a detection mechanism is arranged on the telescopic end of the hydraulic rod (5), an extension mechanism is arranged on the detection mechanism, and a rotation adjustment mechanism is arranged on the fixed top plate (1); The extension mechanism comprises a pressing block (8), both sides of the bottom end of the pressing block (8) are provided with placement grooves (33), the top ends of the two placement grooves (33) are connected with square notches (17), the inner walls of the two square notches (17) are rotatably connected with a rotating shaft (25) on the side away from each other, the outer walls of the two rotating shafts (25) are fixedly connected with second adjustment gears (21), the outer diameters of the two second adjustment gears (21) are meshedly connected with adjustment tooth plates (22), the bottom ends of the two adjustment tooth plates (22) are fixedly connected with extension blocks (16) for extending the overall length, the two extension blocks (16) are slidably connected to the placement grooves (33), the second adjustment gear (21) rotates to move the adjustment tooth plates (22), thereby moving the extension blocks (16) to increase the contact area with the bottom of the inner wall of the cloth backpack, and both sides of the top end of the pressing block (8) are provided with limiting mechanisms for limiting the second adjustment gears (21); The rotation adjustment mechanism comprises square holes (14) penetrating four sides of the top of the fixed top plate (1), the inner walls of the four square holes (14) are slidably connected with square sliders (15), the bottom ends of the four square sliders (15) are fixedly connected with hooks (11) for hanging cloth backpacks of different calibers, and the distances between the four hooks (11) are symmetrical and unequal.

2. A load-bearing capacity detection device for a cloth backpack according to claim 1, Features: The detection mechanism comprises a fixed cylinder (12) fixedly connected to the telescopic end of the hydraulic rod (5), a fixed column (24) is arranged on the inner wall of the fixed cylinder (12), a pressure sensor (30) for detecting the bearing force of the cloth backpack is fixedly connected between the fixed column (24) and the fixed cylinder (12), and the fixed column (24) and the pressing block (8) are fixedly connected.

3. The load-bearing capacity detection device for a cloth backpack according to claim 2, Features: The outer wall of the fixed cylinder (12) is symmetrically fixedly connected with a fixed block (13), and the top ends of the two fixed blocks (13) are fixedly connected with a guide rod (4) for guiding and limiting and passes through the fixed top plate (1).

4. The load-bearing capacity detection device for a cloth backpack according to claim 1, Features: The limiting mechanism comprises a telescopic cylinder (19) fixedly connected to both sides of the corresponding square notch (17) at the top of the pressing block (8); the inner walls of the four telescopic cylinders (19) are each provided with a fixed disk (28); and tension springs (29) for elastic reset are fixedly connected between the four groups of the fixed disks (28) and the telescopic cylinders (19); the tension springs (29) reset and move the fixed disks (28).

5. The load-bearing capacity detection device for a cloth backpack according to claim 4, Features: The tops of the inner walls of the four telescopic cylinders (19) are fixedly connected to limit rings (27), the inner walls of the four limit rings (27) are provided with telescopic columns (26), the four telescopic columns (26) are fixedly connected to a fixed plate (28), and the fixed plate (28) moves with the telescopic columns (26).

6. The load-bearing capacity detection device for a cloth backpack according to claim 5, Features: The top ends of the four telescopic columns (26) are fixedly connected to a connecting rod (18), the middle parts of the bottom ends of the two connecting rods (18) are fixedly connected to a circular column (20), and the bottom ends of the two circular columns (20) are fixedly connected to a limiting block (23) for being stuck in the tooth groove of the second adjusting gear (21) and the extension block (16) is limited and fixed by the adjusting tooth plate (22).

7. The load-bearing capacity detection device for a cloth backpack according to claim 1, Features: The rotation adjustment mechanism comprises arc-shaped slide grooves (31) provided on four sides of the top of the fixed top plate (1); the inner walls of the four arc-shaped slide grooves (31) are slidably connected with arc-shaped sliders (32); the tops of the four arc-shaped sliders (32) are fixedly connected with guide rings (3); and the outer wall of the guide ring (3) is fixedly connected with an outer gear ring (2).

8. The load-bearing capacity detection device for a cloth backpack according to claim 7, Features: The four sides of the top of the guide ring (3) are all provided with guide holes (7), and the tops of the four square sliders (15) are all fixedly connected with guide columns (6) arranged and sliding on the inner walls of the guide holes (7).

9. The load-bearing capacity detection device for a cloth backpack according to claim 8, Features: A motor (9) is fixedly connected to one corner of the bottom end of the fixed top plate (1); a driving end of the motor (9) is fixedly connected to a first adjusting gear (10) via a driving shaft; the first adjusting gear (10) is meshingly connected to the outer gear ring (2).

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