A compression strength testing device

Abstract

The present invention provides a compression strength testing device, and specifically relates to the technical field of strength testing device design equipment. The present invention includes a compression strength tester body and a cardboard, the compression strength tester body is provided with a display screen and operation keys, the upper end of the compression strength tester body is provided with a support column, and the support column is provided with a support plate; the side wall of the lifting column is provided with gear teeth, the support plate is provided with a motor, the rotating shaft of the motor is provided with a first gear, a second gear is provided between the first gear and the gear teeth, and the second gear is meshed and connected with the first gear and the gear teeth; the lower end of the lifting column and the compression strength tester body are respectively provided with an upper clamping plate and a lower clamping plate, and the cardboard is provided between the upper clamping plate and the lower clamping plate; the support column is provided with at least one clamping rod that passes through the support column, the clamping rod is provided with a rod sleeve, and the support column is provided with a hole matching the rod sleeve. A compression strength testing device proposed by the present invention can facilitate the fixation of the paper or cardboard to be tested, and facilitate the testing of the compression strength of the paper or cardboard.

Description

Technical Field

[0001] The invention belongs to the technical field of strength testing device design, and in particular relates to a compression strength testing device. Background Art

[0002] In a compression test, the maximum compressive stress that a specimen withstands until it breaks (brittle materials) or yields (non-brittle materials). The area used in the calculation is the original cross-sectional area of ​​the specimen. In the absence of an obvious yield point, the compressive stress at a pre-set offset yield point can be used to define it. Compression strength is also an important mechanical quantity that characterizes the ability of a material to resist compressive loads without failure.

[0003] In the process of testing paper or paperboard, the existing compression strength testing device cannot fix the paper or paperboard vertically, so a compression strength testing device that can solve the above problem is needed. Summary of the invention

[0004] The object of the present invention is to provide a compression strength testing device, which can facilitate the fixation of the paper or paperboard to be tested and facilitate the testing of the compression strength of the paper or paperboard.

[0005] The present invention provides the following technical solutions:

[0006] A compression strength testing device comprises a compression strength tester body and a cardboard, wherein the compression strength tester body is provided with a display screen and an operation key, the upper end of the compression strength tester body is provided with a support column, the support column is provided with a support plate, the support plate is provided with a lifting column penetrating the support plate, the lifting column is slidably connected with the support plate; the side wall of the lifting column is provided with gear teeth, the support plate is provided with a motor, the rotating shaft of the motor is provided with a first gear, a second gear is provided between the first gear and the gear teeth, and the second gear is meshed with the first gear and the gear teeth The radius of the first gear is smaller than the radius of the second gear; an upper clamping plate and a lower clamping plate are respectively provided on the lower end of the lifting column and the main body of the compression strength tester, and the cardboard is arranged between the upper clamping plate and the lower clamping plate; at least one clamping rod passing through the support column is provided on the support column, the support column is slidably connected with the clamping rod, a rod sleeve is provided on the clamping rod, the clamping rod passes through the end of the rod sleeve, the end of the rod sleeve is rotatably connected with the clamping rod, a hole matching the rod sleeve is provided on the support column, and the hole wall is slidably connected with the side wall of the rod sleeve.

[0007] Preferably, end surfaces of the upper clamping plate and the lower clamping plate are provided with placement grooves, and the bottoms of the placement grooves are connected to the ends of the paperboards.

[0008] Preferably, the groove wall of the placement groove is provided with a slide rod and a slide groove matching the slide rod, the groove wall of the slide groove is slidably connected to the side wall of the slide rod, and a spring is provided between the groove bottom of the slide groove and the slide rod.

[0009] Preferably, the groove wall of the slide groove is provided with an annular convexity, which is slidably connected to the side wall of the slide rod, a clamping plate is provided at one end of the slide rod, and a first limiting plate is provided at the other end of the slide rod, and the edge of the first limiting plate is slidably connected to the groove wall of the slide groove.

[0010] Preferably, a roller is provided at one end of the clamping rod, and the roller is rotatably connected to the clamping rod.

[0011] Preferably, a groove is provided on the side wall of the lifting column, and the bottom end of the gear tooth is connected to the bottom of the groove.

[0012] Preferably, a fixing protrusion and a fixing cylinder are respectively provided on the side wall of the supporting column and the upper end of the supporting plate, and the fixing protrusion and the fixing cylinder are respectively slidably connected to the sliding rod and the lifting column.

[0013] Preferably, the outer side wall of the rod sleeve and the hole wall of the hole are both provided with external threads that match each other, and the rod sleeve is threadedly connected to the hole.

[0014] Preferably, a second limiting plate is provided at the other end of the clamping rod and the upper end of the lifting column.

[0015] Preferably, a guard plate is provided at the upper end of the support plate, and the motor and the second gear are arranged below the guard plate.

[0016] Beneficial effects of the present invention:

[0017] The upper end of the main body of the compression strength tester of the present invention is provided with a support column, a support plate is provided on the support column, a lifting column penetrating the support plate is provided on the support plate, the lifting column is slidably connected with the support plate, a side wall of the lifting column is provided with gear teeth, a motor is provided on the support plate, a first gear is provided on the rotating shaft of the motor, a second gear is provided between the first gear and the gear teeth, the second gear is meshed and connected with the first gear and the gear teeth, the radius of the first gear is smaller than the radius of the second gear, the support column plays a role of supporting the support plate, the motor drives the lifting column to move up and down through the first gear and the second gear, and the second gear can reduce the load of the motor;

[0018] An upper clamping plate and a lower clamping plate are respectively arranged on the lower end of the lifting column and the main body of the compression strength tester, and the cardboard is arranged between the upper clamping plate and the lower clamping plate, and the upper clamping plate and the lower clamping plate play the role of compressing the cardboard;

[0019] The support column is provided with at least one clamping rod which passes through the support column, the support column is slidably connected to the clamping rod, a rod sleeve is provided on the clamping rod, the clamping rod passes through the end of the rod sleeve, the end of the rod sleeve is rotatably connected to the clamping rod, a hole matching the rod sleeve is provided on the support column, the hole wall is slidably connected to the side wall of the rod sleeve, the clamping rod adjusts its position through the rod sleeve, so that the clamping rod can clamp the cardboard conveniently and prevent the cardboard from tipping over. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a partial enlarged view of the present invention;

[0023] Figure 3 It is a partial enlarged view of the present invention.

[0024] Description of reference numerals:

[0025] 1. Compression strength tester body; 2. Cardboard; 3. Display screen; 4. Operation key; 5. Support column; 6. Support plate; 7. Lifting column; 8. Gear; 9. Motor; 10. First gear; 11. Second gear; 12. Upper clamping plate; 13. Lower clamping plate; 14. Clamping rod; 15. Rod sleeve; 16. Hole; 17. Slide rod; 18. Slide groove; 19. Annular protrusion; 20. First limit plate; 21. Placement groove; 22. Clamping plate; 23. Spring; 24. Roller; 25. Groove; 26. Fixed protrusion; 27. Fixed cylinder; 28. External thread; 29. ​​Second limit plate; 30. Guard plate; 31. First annular groove; 32. Rotating plate; 33. Second annular groove. DETAILED DESCRIPTION

[0026] like Figures 1 to 3As shown, a compression strength testing device comprises a compression strength tester body 1 and a cardboard 2. A display screen 3 and an operation key 4 are arranged on the compression strength tester body 1. A support column 5 is arranged on the upper end of the compression strength tester body 1 in the vertical direction. A support plate 6 is arranged on the upper end of the support column 5. The support column 5 penetrates the support plate 6. A second annular groove 33 is arranged on the side wall of the support column 5. The bottom of the second annular groove 33 is connected with the support plate 6. The support column 5 plays a role of supporting the support plate 6. The second annular groove 33 makes the fixation of the support plate 6 more secure. A lifting column 7 penetrating the support plate 6 is arranged on the support plate 6. The lifting column 7 is slidably connected with the support plate 6. A groove 25 is arranged on the side wall of the lifting column 7 in the vertical direction. A gear tooth 8 is arranged on the bottom of the groove 25. The groove 25 prevents the gear tooth 8 from affecting the up and down movement of the lifting column 7. movement; a fixing cylinder 27 is provided at the upper end of the support plate 6, and a notch matching the groove 25 is provided at the fixing cylinder 27 in the vertical direction, and the fixing cylinder 27 makes the lifting column 7 move up and down more stably; a motor 9 is provided on the support plate 6, and a first gear 10 is provided on the rotating shaft of the motor 9, and a second gear 11 is provided between the first gear 10 and the gear teeth 8, and the second gear 11 is meshed and connected with the first gear 10 and the gear teeth 8. The radius of the first gear 10 is two centimeters smaller than the radius of the second gear 11. The motor 9 drives the lifting column 7 to move up and down through the first gear 10 and the second gear 11, and the second gear 11 can reduce the load of the motor 9; a guard plate 30 is provided at the upper end of the support plate 6, and the motor 9 and the second gear 11 are arranged below the guard plate 30, and the guard plate 30 can protect the motor 9 and the second gear 11.

[0027] An upper clamping plate 12 and a lower clamping plate 13 are respectively arranged at the lower end of the lifting column 7 and the main body 1 of the compression strength tester, and the cardboard 2 is arranged between the upper clamping plate 12 and the lower clamping plate 13, and the upper and lower ends of the cardboard 2 are respectively connected to the upper clamping plate 12 and the lower clamping plate 13, and the upper clamping plate 12 and the lower clamping plate 13 play a role in compressing the cardboard; the end surfaces of the upper clamping plate 12 and the lower clamping plate 13 are provided with a placement groove 21, and the bottom of the placement groove 21 is connected to the end of the cardboard 2, and the placement groove 21 makes the cardboard 2 more stably placed; the groove wall of the placement groove 21 is provided with a slide bar 17 And a slide groove 18 matching the slide rod 17, the groove wall of the slide groove 18 is provided with an annular protrusion 20, the annular protrusion 20 is slidably connected to the side wall of the slide rod 17, one end of the slide rod 17 is provided with a clamping plate 22, and the other end of the slide rod 17 is provided with a first limiting plate 20, the edge of the first limiting plate 20 is slidably connected to the groove wall of the slide groove 18, a spring 23 is provided between the groove bottom of the slide groove 18 and the first limiting plate 20, the clamping plate 22 makes the clamping of the cardboard 2 more stable through the spring 23, and the annular protrusion 19 and the first limiting plate 20 can prevent the slide rod 17 from sliding out of the slide groove 18.

[0028] Each support column 5 is provided with two clamping rods 14 that penetrate the support column 5, and the support column 5 is slidably connected to the clamping rod 14. The side wall of the support column 5 is provided with a fixing protrusion 26, and the fixing protrusion 26 is slidably connected to the slide bar 14, and the fixing protrusion 26 makes the slide bar 14 slide more stably; a rod sleeve 15 is provided on the clamping rod 14, and the clamping rod 14 penetrates the end of the rod sleeve 15, and the side wall of the clamping rod 14 is provided with a first annular groove 31, and the groove bottom of the first annular groove 31 is rotatably connected to the rod sleeve 15, and the first annular groove 31 makes the rotation of the rod sleeve 15 more stable; a rotating plate 32 is provided at the end of the rod sleeve 15, and the clamping rod 14 penetrates the rotating plate 32, and the rotating plate 32 is square, and the rotating plate 32 is convenient for driving the rod sleeve 1 5; the support column 5 is provided with a hole 16 matching the rod sleeve 15, the outer wall of the rod sleeve 15 and the hole wall of the hole 16 are both provided with external threads 28 matching each other, the rod sleeve 15 is threadedly connected with the hole 16, and the clamping rod 14 adjusts the position of the clamping rod 14 through the rod sleeve 15 and the hole 16, which facilitates the clamping rod 14 to clamp the cardboard 2 and prevent the cardboard 2 from tipping over; a roller 24 is provided at one end of the clamping rod 14, and the roller 24 is rotatably connected to the clamping rod 14, and the roller 24 can reduce the friction force of the clamping rod 14 on the cardboard 2; a second limit plate 29 is provided at the other end of the clamping rod 14 and the upper end of the lifting column 7, and the second limit plate 29 can prevent the clamping rod 14 from sliding out of the fixed protrusion 26.

[0029] The working method of the present invention is as follows: the upper and lower ends of the cardboard 2 are placed in the placement groove 21, the clamping plate 22 clamps the two sides of the cardboard 2, the clamping plate 22 makes the clamping of the cardboard 2 more stable through the spring 23, the rotating rod sleeve 15 adjusts the position of the clamping rod 14, so that the roller 24 clamps the two sides of the cardboard 2 to prevent the cardboard 2 from tipping over, the motor 20 drives the lifting column 7 to move downward through the second gear 11, the second gear 11 can reduce the load of the motor 9, and the compression strength tester body 1 performs a compression strength test on the cardboard 2.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compression strength testing device, comprising a compression strength testing instrument body and a cardboard, wherein the compression strength testing instrument body is provided with a display screen and operation keys, and characterized in that: The upper end of the compression strength tester body is provided with a support column, a support plate is provided on the support column, a lifting column penetrating the support plate is provided on the support plate, and the lifting column is slidably connected to the support plate; the side wall of the lifting column is provided with gear teeth, a motor is provided on the support plate, a first gear is provided on the rotating shaft of the motor, a second gear is provided between the first gear and the gear teeth, the second gear is meshed and connected with the first gear and the gear teeth, and the radius of the first gear is smaller than the radius of the second gear; an upper clamping plate and a lower clamping plate are respectively provided on the lower end of the lifting column and the compression strength tester body, and the upper clamping plate and the lower clamping plate are provided on the lower end of the lifting column and the compression strength tester body. The end surface of the lower clamping plate is provided with a placement groove, the bottom of the placement groove is connected to the end of the paperboard, and the paperboard is arranged between the upper clamping plate and the lower clamping plate; the support column is provided with at least one clamping rod penetrating the support column, one end of the clamping rod is provided with a roller, the roller is rotatably connected to the clamping rod, the support column is slidably connected to the clamping rod, the clamping rod is provided with a rod sleeve, the clamping rod penetrates the end of the rod sleeve, the side wall of the clamping rod is provided with a first annular groove, the bottom of the first annular groove is rotatably connected to the rod sleeve, the support column is provided with a hole matching the rod sleeve, and the hole wall of the hole is slidably connected to the side wall of the rod sleeve; The outer side wall of the rod sleeve and the hole wall of the hole are both provided with external threads that match each other, and the rod sleeve is threadedly connected with the hole.

2. A compression strength testing device according to claim 1, characterized in that: The slot wall of the placement slot is provided with a slide bar and a slide slot matching the slide bar, the slot wall of the slide slot is slidably connected with the side wall of the slide bar, and a spring is provided between the slot bottom of the slide slot and the slide bar.

3. A compression strength testing device according to claim 2, characterized in that: The groove wall of the slide groove is provided with an annular protrusion, and the annular protrusion is slidably connected to the side wall of the slide rod. A clamping plate is provided at one end of the slide rod, and a first limiting plate is provided at the other end of the slide rod. The edge of the first limiting plate is slidably connected to the groove wall of the slide groove.

4. A compression strength testing device according to claim 1, characterized in that: The side wall of the lifting column is provided with a groove, and the bottom end of the gear tooth is connected to the bottom of the groove.

5. A compression strength testing device according to claim 2, characterized in that: The side wall of the support column and the upper end of the support plate are respectively provided with a fixing protrusion and a fixing cylinder, and the fixing protrusion and the fixing cylinder are respectively slidably connected with the sliding rod and the lifting column.

6. A compression strength testing device according to claim 1, characterized in that: A second limiting plate is provided at the other end of the clamping rod and the upper end of the lifting column.

7. A compression strength testing device according to claim 1, characterized in that: A guard plate is provided at the upper end of the support plate, and the motor and the second gear are arranged below the guard plate.

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