A bamboo hardness testing device

Abstract

The application discloses a kind of bamboo hardness testing device, including base, detection table and mounting bracket are equipped on base, mounting bracket is installed with guide rod and screw rod, guide rod is slidably installed with movable table, movable table is threadedly connected with screw rod, stepping motor is installed with screw rod driving connection on base, hardness detection component is installed on movable table, detection table is equipped with clamping groove, clamp is equipped with clamping groove, clamp includes outer shell, installation plate is equipped in outer shell, multiple top plates are slidably installed in outer shell, installation column is equipped in the bottom of each top plate, installation column is slidably arranged on installation plate, spring is installed on installation column, elastic sheet is equipped on the top of top plate, connecting stake is fixed on the bottom of elastic sheet, elastic sheet is installed on connecting stake, locking mechanism is installed on fixed base, locking mechanism is used to fix each top plate, for solving the problem that the hardness detection device commonly used in prior art is prone to rupture of bamboo sample when detecting bamboo hardness, and is prone to affecting bamboo hardness detection.

Description

Technical Field

[0001] This invention belongs to the field of bamboo hardness testing technology, and specifically relates to a bamboo hardness testing device. Background Technology

[0002] In bamboo hardness testing, the bamboo sample to be tested is placed on a support platform. Then, a hardness tester is pressed against the top of the bamboo sample and pressure is applied. Finally, the hardness of the bamboo sample is obtained by reading the hardness tester. Furthermore, to ensure more accurate results, multiple hardness measurements are generally required for the same bamboo sample, with a minimum distance of 10mm between each measurement point. Bamboo samples are arched sheets. Due to the varying outer diameter and thickness of the cylindrical bamboo, the inner wall curvature of the sample varies. Common clamps cannot effectively secure the bamboo sample. The arched shape of the sample means that most of the inner wall lacks support during testing, making the sample prone to breakage when the top is pressed, thus affecting the bamboo hardness test results. Summary of the Invention

[0003] Based on the problems mentioned in the background art above, the present invention provides a bamboo hardness testing device to solve the problem that commonly used hardness testing devices in the prior art are prone to causing bamboo samples to crack when testing bamboo hardness, which easily affects the bamboo hardness testing.

[0004] The technical solution adopted in this invention is as follows: A bamboo hardness testing device includes a base, a testing platform and a mounting frame on the base, a guide rod and a lead screw mounted on the mounting frame, a movable stage slidably mounted on the guide rod and threadedly connected to the lead screw, a stepper motor connected to the lead screw and mounted on the base, a hardness testing component mounted on the movable stage, a slot on the testing platform, a clamping fixture mounted in the slot, the clamping fixture including a housing, a first locking block and a second locking block matching the slot, a mounting plate inside the housing, and multiple top plates slidably mounted inside the housing. Each top plate has a mounting post at its bottom, which slides through the mounting plate and is equipped with a spring. Both ends of the top plate have a reserved groove and several fixing grooves. The mounting plate has a limiting plate, and the top plate has a limiting groove corresponding to the limiting plate. The top of the top plate has a first elastic piece, and a connecting post is fixed to the bottom of the first elastic piece. A second elastic piece is installed on the connecting post and is located in the reserved groove. One end of the outer shell has a fixing seat, and a locking mechanism is installed on the fixing seat to fix each top plate.

[0005] Based on the above technical solution, the present invention further improves upon the following: Furthermore, the locking mechanism includes a threaded base cylinder, one end of which is rotatably mounted with a connecting cylinder. A U-shaped frame is fixedly mounted on the connecting cylinder, and a slide rod is mounted on the U-shaped frame. Multiple locking components corresponding to the top plate are slidably mounted on the slide rod. Each locking component has a groove and a locking tooth. The locking component is fitted onto the slide rod through the groove. A top bar is slidably embedded in the U-shaped frame, and an adjusting screw is installed inside the threaded base cylinder. By moving the U-shaped frame, the locking component is engaged in a fixed groove on the top plate. Under the action of the adjusting screw, the top bar is pressed to tightly compress the locking component, thus fixing it and preventing it from moving on the slide rod.

[0006] Furthermore, a magnet is fixedly installed at one end of the adjusting screw. The magnet attracts the locking element, thereby causing the top bar to move synchronously when the adjusting screw moves.

[0007] Furthermore, a rubber anti-slip layer is fixed to one end of the locking member near the top bar. By setting the rubber anti-slip layer, the frictional resistance between the locking member and the top bar can be increased, making the locking member more stable and less prone to slippage when the top bar presses against it.

[0008] Furthermore, the hardness testing component includes a mounting shaft and a hardness gauge fixed to the mounting shaft. The mounting shaft has a retaining ring with an annular groove. An ear plate is provided on the movable platform, and a connecting rod passes through the ear plate. A fixing post and a linkage plate are respectively mounted at both ends of the connecting rod. A locking screw passes through the linkage plate, and limit rings are fixed to both sides of the linkage plate by the locking screw. The locking screw is threadedly connected to the ear plate. Adjusting the locking screw moves the fixing post into the annular groove to fix the mounting shaft; moving the fixing post out of the annular groove releases the mounting shaft, making replacement of the hardness testing component relatively convenient.

[0009] Furthermore, the fixing post has a conical structure. This allows for better insertion into the annular groove.

[0010] Furthermore, an axial cut is provided on the mounting shaft, and a collar matching the mounting shaft is mounted on the mounting bracket, with the mounting shaft slidingly passing through the collar. The collar limits the movement of the mounting shaft, preventing the hardness testing component from rotating during use.

[0011] The beneficial effects of this invention are: The clamp can be used to fix bamboo strips of various curvatures, making inspection convenient; The top plate and the first elastic plate in the fixture can fit against the inner wall of the curved bamboo strip for support, avoiding the force of the support point of the curved bamboo strip being concentrated at both ends of the bamboo strip, which would cause the bamboo strip to break when squeezed, affecting the hardness test. Attached Figure Description

[0012] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of the structure of a bamboo hardness testing device according to an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a bamboo hardness testing device according to an embodiment of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of a bamboo hardness testing device according to an embodiment of the present invention. Figure 3 ; Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the fixture in an embodiment of the present invention; Figure 6 for Figure 5 Enlarged structural diagram at point B; Figure 7 This is a schematic diagram of the longitudinal section structure of the clamp in an embodiment of the present invention; Figure 8 for Figure 7 Enlarged structural diagram at point C; Figure 9 This is a schematic diagram of the locking mechanism in an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of a bamboo hardness testing device in an embodiment of the present invention. Figure 4 ; Figure 11 for Figure 10 Enlarged structural diagram at point D; The symbols for the main components are explained below: 11. Base; 12. Testing table; 121. Slot; 13. Mounting bracket; 14. Guide rod; 15. Lead screw; 2. Movable table; 21. Ear plate; 22. Connecting rod; 23. Fixing column; 24. Linkage plate; 25. Locking screw; 26. Limiting ring; 3. Hardness testing component; 31. Mounting shaft; 32. Hardness tester; 33. Notch; 34. Collar; 35. Fixing ring; 35. Annular groove; 351. Stepper motor; 4. Clamp; 5. Housing; 51. First locking block; 511. Second locking block; 512. Mounting plate. 52. Limiting plate 521. Top plate 53. Mounting column 531. Spring 532. Fixing groove 533. Reserved groove 534. Limiting groove 535. First elastic plate 54. Connecting pile 541. Second elastic plate 542. Fixing seat 55. Threaded base cylinder 56. Connecting cylinder 561. U-shaped frame 562. Slide rod 563. Top bar 564. Adjusting screw 565. Magnet block 5651. Locking part 57. Slide groove 571. Clamping tooth 572. Bamboo sample 6. Detailed Implementation

[0013] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] like Figures 1-3 As shown, a bamboo hardness testing device includes a base 11, a testing platform 12 and a mounting frame 13 on the base 11, a guide rod 14 and a lead screw 15 mounted on the mounting frame 13, a movable platform 2 slidably mounted on the guide rod 14, the movable platform 2 being threadedly connected to the lead screw 15, a stepper motor 4 connected to the lead screw 15 for transmission on the base 11, and a hardness testing component 3 mounted on the movable platform 2. The stepper motor 4 drives the lead screw 15 to rotate, thereby causing the movable platform 2 to rise and fall, so that the hardness testing component 3 can squeeze the bamboo to perform hardness testing.

[0015] like Figures 2-7 As shown, the testing table 12 is provided with a slot 121, and a clamp 5 is clamped in the slot 121. The clamp 5 includes a housing 51, and the housing 51 is provided with a first locking block 511 and a second locking block 512 that match the slot 121. When the first locking block 511 is inserted into the slot 121, the clamp 5 is upright and used for radial compression testing of the bamboo sample 6 when it is inverted (e.g., Figure 2 As shown), the second clamp 512 is inserted into the clamp slot 121. The clamp is inverted for vertical axial compression testing of the bamboo sample 6 (as shown). Figure 10 , Figure 11 As shown), an installation plate 52 is provided inside the outer casing 51. Multiple top plates 53 are slidably installed inside the outer casing 51. Each top plate 53 has a mounting post 531 at its bottom, which slides through the installation plate 52. A spring 532 is installed on the mounting post 531. Both ends of the top plate 53 have reserved grooves 534 and several fixing grooves 533. The installation plate 52 has a limiting plate 521, and the top plate 53 has a limiting groove 535 corresponding to the limiting plate 521. The multiple top plates 53 provide multi-point support for the bamboo sample 6 to prevent the bamboo sample 6 from falling. When subjected to compression, the top plate 53 is provided with a first elastic sheet 54. The pressure between the top plate 53 and the bamboo sample 6 is dispersed by the contact between the first elastic sheet 54 and the bamboo sample 6, which facilitates better support for the bamboo sample 6 during hardness testing. A connecting post 541 is fixed to the bottom of the first elastic sheet 54, and a second elastic sheet 542 is installed on the connecting post 541. The second elastic sheet 542 is located in the reserved groove 534. A fixing seat 55 is provided at one end of the outer shell 51, and a locking mechanism is installed on the fixing seat 55. The locking mechanism is used to fix each top plate 53.

[0016] like Figures 7-9As shown, the locking mechanism includes a threaded base cylinder 56, with a connecting cylinder 561 rotatably mounted at one end. A U-shaped frame 562 is fixedly mounted on the connecting cylinder 561, and a slide rod 563 is mounted on the U-shaped frame 562. Multiple locking elements 57 corresponding to the top plate 53 are slidably mounted on the slide rod 563. Each locking element 57 has a groove 571 and a locking tooth 572. The locking element 57 is fitted onto the slide rod 563 through the groove 571. A top bar 564 is slidably embedded on the U-shaped frame 562, and an adjusting screw 565 is installed inside the threaded base cylinder 56. By moving the U-shaped frame 562, the locking element 57 is engaged in the fixing groove 533 on the top plate 53. Under the action of the adjusting screw 565, the top bar 564 presses the locking element 57 tightly, thus fixing the locking element 57 and preventing it from moving on the slide rod 563.

[0017] Specifically, a magnet 5651 is fixedly installed at one end of the adjusting screw 565. The magnet 5651 attracts the locking member 57, so that when the adjusting screw 565 moves, it can drive the top bar 564 to move synchronously.

[0018] Specifically, a rubber anti-slip layer is fixed to one end of the locking member 57 near the top bar 564. By setting the rubber anti-slip layer, the frictional resistance between the locking member 57 and the top bar 564 can be increased, making the locking member 57 more stable and less prone to slippage when the top bar 564 presses the locking member 57.

[0019] Specifically, the hardness testing component 3 includes a mounting shaft 31 and a hardness gauge 32 fixed on the mounting shaft 31. The mounting shaft 31 has a retaining ring 35 with an annular groove 351. The movable table 2 has an ear plate 21 with a connecting rod 22 passing through it. A retaining post 23 and a linkage plate 24 are respectively mounted on both ends of the connecting rod 22. A locking screw 25 passes through the linkage plate 24, and limit rings 26 are fixed to both sides of the linkage plate 24 by the locking screw 25. The locking screw 25 is threadedly connected to the ear plate 21. Adjusting the locking screw 25 moves the retaining post 23 into the annular groove 351 to fix the mounting shaft 31. Moving the retaining post 23 out of the annular groove 351 releases the mounting shaft 31, making replacement of the hardness testing component 3 relatively convenient.

[0020] Specifically, the fixing post 23 has a conical structure, which allows it to be better inserted into the annular groove 351.

[0021] Specifically, the mounting shaft 31 has an axial cutout 33, and the mounting bracket 13 is equipped with a collar 34 that matches the mounting shaft 31. The mounting shaft 31 slides through the collar 34, and the collar 34 limits the mounting shaft 31 to prevent the hardness testing component 3 from rotating during use.

[0022] When radial compression testing of the hardness of bamboo sample 6 is required, the first clamping block 511 of the fixture 5 is inserted into the slot 121, and the bamboo sample 6 is placed on the fixture (e.g., ...). Figure 1 (As shown), then make the top plate 53 adapt to the curvature of the bamboo sample 6, then rotate the threaded base cylinder 56 to push the U-shaped frame 562 so that the locking piece 57 is inserted into the fixing groove 533 on one side of the top plate 53, then rotate the adjusting screw 565 to push the top bar 564 to press the locking piece 57 to fix the top plate 53. After that, the bamboo sample 6 can be released to perform hardness testing.

[0023] When it is necessary to test the hardness of bamboo sample 6 by axial compression, insert the second clamping block 512 of the two clamps 5 into the clamping slot 121 and set the two clamps 5 opposite to each other. Then place the bamboo sample 6 between the two clamps 5 and press the two clamps 5 to fix the top plate 53 in the aforementioned manner.

[0024] The above provides a detailed description of the bamboo hardness testing device provided by the present invention. The specific embodiments are described only to aid in understanding the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A bamboo hardness testing device, comprising a base (11), a testing platform (12) and a mounting frame (13) on the base (11), a guide rod (14) and a lead screw (15) mounted on the mounting frame (13), a movable platform (2) slidably mounted on the guide rod (14), the movable platform (2) being threadedly connected to the lead screw (15), a stepper motor (4) connected to the lead screw (15) on the base (11), and a hardness testing component (3) mounted on the movable platform (2), characterized in that: The testing platform (12) is provided with a slot (121), and a clamp (5) is clamped in the slot (121). The clamp (5) includes an outer shell (51). The outer shell (51) is provided with a first clamping block (511) and a second clamping block (512) that match the slot (121). An installation plate (52) is provided inside the outer shell (51). Multiple top plates (53) are slidably installed inside the outer shell (51). Each top plate (53) is provided with a mounting post (531) at its bottom. The mounting post (531) slides through the installation plate (52). A spring (532) is installed on the mounting post (531). A reserved slot is provided at both ends of the top plate (53). (534) and several fixing slots (533), the mounting plate (52) is provided with a limiting plate (521), the top plate (53) is provided with a limiting slot (535) corresponding to the limiting plate (521), the top of the top plate (53) is provided with a first elastic piece (54), the bottom of the first elastic piece (54) is fixed with a connecting pile (541), the connecting pile (541) is installed with a second elastic piece (542), the second elastic piece (542) is located in the reserved slot (534), one end of the outer shell (51) is provided with a fixing seat (55), the fixing seat (55) is installed with a locking mechanism, the locking mechanism is used to fix each top plate (53).

2. The bamboo hardness testing device according to claim 1, characterized in that: The locking mechanism includes a threaded base cylinder (56), a connecting cylinder (561) is rotatably mounted on one end of the threaded base cylinder (56), a U-shaped frame (562) is fixedly mounted on the connecting cylinder (561), a slide rod (563) is mounted on the U-shaped frame (562), a plurality of locking parts (57) corresponding to the top plate (53) are slidably mounted on the slide rod (563), the locking parts (57) are provided with a sliding groove (571) and a locking tooth (572), the locking parts (57) are sleeved on the slide rod (563) through the sliding groove (571), a top bar (564) is slidably embedded on the U-shaped frame (562), and an adjusting screw (565) is installed inside the threaded base cylinder (56).

3. The bamboo hardness testing device according to claim 2, characterized in that: A magnet block (5651) is fixedly installed at one end of the adjusting screw (565).

4. The bamboo hardness testing device according to claim 3, characterized in that: The locking member (57) has a rubber anti-slip layer fixed at one end near the top bar (564).

5. The bamboo hardness testing device according to claim 1, characterized in that: The hardness testing component (3) includes a mounting shaft (31) and a hardness tester (32) fixed on the mounting shaft (31). The mounting shaft (31) is provided with a fixing ring (35), and the fixing ring (35) is provided with an annular groove (351). The movable table (2) is provided with an ear plate (21), and a connecting rod (22) is passed through the ear plate (21). The two ends of the connecting rod (22) are respectively equipped with a fixing post (23) and a linkage plate (24). A locking screw (25) is passed through the linkage plate (24). The locking screw (25) is fixed with limit rings (26) on both sides of the linkage plate (24). The locking screw (25) is threadedly connected to the ear plate (21).

6. The bamboo hardness testing device according to claim 5, characterized in that: The fixed column (23) has a conical structure.

7. The bamboo hardness testing device according to claim 6, characterized in that: The mounting shaft (31) has an axial cut (33), and the mounting bracket (13) is equipped with a collar (34) that matches the mounting shaft (31). The mounting shaft (31) slides through the collar (34).

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