A modular integrated tensile, compressive, and bending testing machine for wood

Abstract

This utility model discloses a modular integrated tensile, compressive, and bending testing machine for wood, comprising: a frame and a tensile / compressive testing unit, the tensile / compressive testing unit including a first tensile / compressive fastening seat and a second tensile / compressive fastening seat respectively disposed on the mounting surface and the base, the first tensile / compressive fastening seat and the second tensile / compressive fastening seat being used to connect the two ends of the wood for tensile / compressive testing; a bending testing unit, the bending testing unit including a first bending fastening seat and a second bending fastening seat respectively disposed on the mounting surface and the base, the first bending fastening seat and the second bending fastening seat being used to connect the two ends of the wood for bending testing; and a lateral pressure component, the lateral pressure component being detachably connected to the frame, the lateral pressure component being used to apply lateral pressure during bending testing, thereby realizing tensile / compressive and bending mechanical testing of wood through the tensile / compressive testing unit, the bending testing unit and the lateral pressure component, thus realizing the integration of multiple tests to reduce equipment costs.

Description

Technical Field

[0001] This utility model relates to the field of wood testing technology, and more specifically to a modular integrated tensile, compressive, and bending testing machine for wood. Background Technology

[0002] Mechanical property testing of wood generally includes tensile, compressive, and bending tests. Currently, wood mechanical property testing machines are generally of a separate structure, requiring separate tensile and compressive testing equipment to complete the tensile and compressive property tests, and additional bending testing equipment to complete the bending tests. This approach results in high equipment costs and therefore needs improvement. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a modular integrated testing machine for wood tension, compression and bending.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A modular integrated tensile, compressive, and bending testing machine for timber includes:

[0006] A frame, the frame including a base and a mounting surface disposed above the base, wherein an installation space is formed between the mounting surface and the base;

[0007] The tensile and compressive testing unit includes a first tensile and compressive fastening seat and a second tensile and compressive fastening seat respectively disposed on the mounting surface and the base. The first tensile and compressive fastening seat and the second tensile and compressive fastening seat are used to connect the two ends of the wood for tensile and compressive testing.

[0008] A bending test unit, comprising a first bending fastener and a second bending fastener respectively disposed on the mounting surface and the base, wherein the first bending fastener and the second bending fastener are used to connect the two ends of the wood for bending test.

[0009] A lateral pressure component is detachably connected to the frame and is used for lateral pressure during bending tests.

[0010] As a further improvement of this utility model, the tension and compression testing unit includes a first force sensor, which is connected to a first tension and compression fastener / a second tension and compression fastener and is used to detect the load on the first tension and compression fastener / a second tension and compression fastener.

[0011] As a further improvement of this utility model, both the first bending fastening seat and the second bending fastening seat include two symmetrically arranged arc-shaped support heads, which are used to abut against both sides of the end of the fixed wood.

[0012] As a further improvement of this utility model, the bending test unit also includes a displacement detection unit, which includes a displacement gauge and an adjustment component. The displacement gauge is connected to the frame through the adjustment component, and the displacement gauge moves in three dimensions through the adjustment component.

[0013] As a further improvement of this utility model, the adjusting component includes a mounting plate, which is slidably connected to the frame along the height direction of the frame. A pressure plate is provided between the mounting plate and the frame. The pressure plate is used to press against the frame to restrict the movement of the mounting plate relative to the frame. A first mounting rod is movably connected to the mounting plate. An adjusting seat is provided on the first mounting rod. The adjusting seat moves along the length direction of the first mounting rod. A second mounting rod is provided on the adjusting seat and is perpendicular to the first mounting rod. The displacement gauge is connected to the second mounting rod and moves along the length direction of the second mounting rod.

[0014] As a further improvement of this utility model, the lateral pressurization component includes a column, a pressure rod, and a loading head. The lower end of the column is fixed to the frame by bolts, the upper end of the column is fixedly connected to the end of the pressure rod, and the end of the pressure rod away from the column is connected to the loading head.

[0015] As a further improvement of this utility model, an adjusting block is movably provided at the upper end of the column, the position of the adjusting block is adjustable along the length direction of the column, and the adjusting block is fixedly connected to the end of the pressure rod.

[0016] As a further improvement of this utility model, the loading head includes a mounting base and a bending pressure head. The output end of the pressure rod is fixedly connected to the mounting base. The mounting base is provided with at least two sliders. The sliders are slidably connected to the mounting base. The sliders are provided with a first mounting hole. The bending pressure head is provided with a second mounting hole corresponding to the first mounting hole and is bolted to the first mounting hole.

[0017] As a further improvement of this utility model, the bending indenter includes interchangeable indenter units:

[0018] Two pressure heads are connected to two sliders by bolts for four-point bending detection;

[0019] A pressure head two is used to connect two sliders respectively for three-point bending detection.

[0020] As a further improvement of this utility model, the tension and compression test unit is arranged between the bending test unit and the lateral pressure component.

[0021] The beneficial effects of this utility model are:

[0022] 1. By using tensile and compressive testing units, bending testing units, and lateral pressure components, tensile, compressive, and bending mechanical tests on wood are achieved, thereby integrating multiple tests to reduce equipment costs;

[0023] 2. The detachable lateral pressure component allows for disassembly during tensile and compressive testing, thereby providing more space within the installation area for the tensile and compressive testing unit to conduct tests, thus reducing the overall size of the equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall installation of this utility model;

[0025] Figure 2 This is a schematic diagram of the second tension / compression fastening seat of this utility model;

[0026] Figure 3 This is a schematic diagram of the second bending fastening seat of this utility model;

[0027] Figure 4 This is a schematic diagram of the mounting plate connection of this utility model;

[0028] Figure 5 This is a schematic diagram of the installation of the second mounting rod of this utility model;

[0029] Figure 6 This is a schematic diagram of the lateral pressurization component of this utility model;

[0030] Figure 7 This is a schematic diagram showing the installation of the bending indenter for the three-point and four-point tests of wood according to this utility model.

[0031] Reference numerals: 1. Frame; 2. Base; 3. Mounting surface; 4. Mounting space; 5. Vertical beam; 6. First tension / compression fastener; 7. Second tension / compression fastener; 8. First force sensor; 9. Base; 10. Base plate; 11. Adjusting plate; 12. Fastening plate; 13. First bending fastener; 14. Second bending fastener; 15. Arc-shaped support head; 16. Displacement gauge; 17. Adjusting component; 18. Mounting plate; 19. Pressure plate; 20. First mounting rod; 21. First fixing rod 21. Fixed screw; 22. Adjusting seat; 23. Second fixed screw; 24. Second mounting rod; 25. Third fixed screw; 26. Column; 27. Pressure rod; 28. Loading head; 29. ​​Adjusting block; 30. Adjusting hole; 31. Fourth fixed screw; 32. Mounting seat; 33. Bending pressure head; 34. Slider; 35. First mounting hole; 36. Second mounting hole; 37. Groove; 38. Fifth fixed screw; 39. Pressure head one; 40. Pressure head two; 41. Second force sensor. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals.

[0033] like Figure 1-7 As shown, a modular wood tension-compression-bending integrated testing machine includes: a frame 1, the frame 1 including a base 2 and a mounting surface 3 provided above the base 2, and an installation space 4 is formed between the mounting surface 3 and the base 2.

[0034] Specifically, vertical beams 5 are symmetrically arranged on the base 2, and a lead screw is provided on the vertical beam 5 along its length. A motor is provided inside the base 2. The motor is connected to the lead screw and is used to drive the lead screw to rotate. One end of the lead screw passes through the mounting surface and is threadedly connected to the mounting surface. Both ends of the mounting surface are limited by the vertical beams on both sides. Thus, in use, the motor drives the lead screw to rotate, thereby driving the mounting surface to move up and down, thereby realizing the adjustment of the mounting surface height.

[0035] Meanwhile, during tensile and compressive testing, the motor rotates to move the mounting surface up and down, thereby applying tensile and compressive forces to the wood.

[0036] It also includes a tension and compression test unit, which includes a first tension and compression fastening seat 6 and a second tension and compression fastening seat 7 respectively disposed on the mounting surface 3 and the base 2. The first tension and compression fastening seat 6 and the second tension and compression fastening seat 7 are used to connect the two ends of the wood for tension and compression testing.

[0037] The tension and compression test unit includes a first force sensor 8, which is connected to the first tension and compression fastening seat 6 / second tension and compression fastening seat 7 and is used to detect the load on the first tension and compression fastening seat 6 / second tension and compression fastening seat 7. In this embodiment, the first force sensor 8 is connected to the first tension and compression fastening seat 6.

[0038] Specifically, both the first tension-compression fastening seat 6 and the second tension-compression fastening seat 7 include a base 9. The base 9 is fixedly connected to the mounting surface 3 or the base 2 by bolts. The base 9 can be disassembled and assembled by bolts, so that a base 9 of appropriate size can be selected for use according to different sizes of wood. The base 9 is symmetrically provided with a base plate 10 and an adjusting plate 11, wherein the base plate 10 and the adjusting plate 11 are fixedly connected to the base 9. A fastening plate 12 is provided between the base plate 10 and the adjusting plate 11. The fastening plate 12 is provided with a bolt. One end of the bolt passes through the adjusting plate 11 and is threadedly connected to the adjusting plate 11. In use, by rotating the bolt, the fastening plate 12 can be moved closer to or away from the base plate 10.

[0039] It also includes a bending test unit, which includes a first bending fastener 13 and a second bending fastener 14 respectively disposed on the mounting surface 3 and the base 2. The first bending fastener 13 and the second bending fastener 14 are used to connect the two ends of the wood for bending test.

[0040] Specifically, both the first bending fastener 13 and the second bending fastener 14 include two symmetrically arranged arc-shaped support heads 15. The two arc-shaped support heads 15 are used to abut against the two sides of the end of the fixed wood. One arc-shaped support head 15 is in a fixed state, and the other arc-shaped support head 15 is driven and fixed by bolts. Its driving method is the same as that of the first tension-compression fastener 6 / second tension-compression fastener 7.

[0041] Furthermore, the bending test unit also includes a displacement detection unit, which includes a displacement meter 16 and an adjustment component 17. The displacement meter 16 is connected to the frame 1 through the adjustment component 17. The adjustment component 17 moves the displacement meter 16 in three dimensions. The displacement meter 16 is used to detect the curvature of the wood during the bending test.

[0042] Specifically, the adjusting component 17 includes a mounting plate 18, which is slidably connected to the frame 1 along the height direction of the frame 1. A pressure plate 19 is provided between the mounting plate 18 and the frame 1. The pressure plate 19 is used to abut against the frame 1 to restrict the movement of the mounting plate 18 relative to the frame 1. Specifically, the pressure plate 19 is connected to the mounting plate 18 by bolts. By rotating the bolts, the pressure plate 19 abuts against the frame 1 to fix the position of the mounting plate 18 relative to the frame 1. A first mounting rod 20 is movably connected to the mounting plate 18, and a first fixing screw 21 is provided on the mounting plate 18 corresponding to the first mounting rod 20. The first fixing screw 21 is used to twist to abut against the first mounting rod 20, thereby adjusting the sliding or fixing of the first mounting rod 20 relative to the mounting plate 18.

[0043] Furthermore, the first mounting rod 20 is provided with an adjusting seat 22, which moves along the length of the first mounting rod 20. The adjusting seat 22 is provided with a second fixing screw 23 corresponding to the first mounting rod 20. The second fixing screw 23 is used to abut against the first mounting rod 20 to restrict the movement of the adjusting seat 22 relative to the first mounting rod 20.

[0044] Furthermore, the adjusting seat 22 is provided with a second mounting rod 24 that is perpendicular to the first mounting rod 20. The displacement gauge 16 is connected to the second mounting rod 24 and moves along the length of the second mounting rod 24. The displacement gauge 16 is provided with a third fixing screw 25, which is used to abut against the second mounting rod 24 to limit the movement of the displacement gauge 16 relative to the second mounting rod 24.

[0045] The displacement gauge 16 can be adjusted in three dimensions by setting up the mounting plate 18, the first mounting rod 20 and the second mounting rod 24. At the same time, the overall structure is simple and reliable and the adjustment is quick.

[0046] It also includes a lateral pressure component, which is detachably connected to the frame 1. The lateral pressure component is used to apply lateral pressure during the bending test, thereby driving the wood to bend to achieve bending detection.

[0047] Specifically, the lateral pressurization component includes a column 26, a pressure rod 27, and a loading head 28. The lower end of the column 26 is fixed to the frame 1 by bolts. Specifically, the frame 1 is provided with holes for installing the column 26. The lower end of the column 26 is detachably connected to the holes by bolts. The upper end of the column 26 is fixedly connected to the end of the pressure rod 27. The end of the pressure rod 27 away from the column 26 is connected to the loading head 28. Furthermore, a second force sensor 41 is provided at the connection between the pressure rod 27 and the loading head 28. The second force sensor 41 is used to detect the pressure of the pressure rod 27.

[0048] During the wood bending test, the two ends of the pressure rod 27 are connected to the column 26 and the loading head 28 respectively, and the column 26 is connected to the frame 1. The pressure rod 27 drives the loading head 28 to move, thereby applying force to the predetermined position of the wood to cause the wood to bend. The bending amplitude of the wood is detected by the displacement gauge 16 to complete the wood bending test.

[0049] Preferably, an adjusting block 29 is movably provided at the upper end of the column 26. The position of the adjusting block 29 is adjustable along the length of the column 26, and the adjusting block 29 is fixedly connected to the end of the pressure rod 27.

[0050] Specifically, the adjusting block 29 is provided with an adjusting hole 30. The adjusting block 29 is slidably connected to the upper end of the column 26 through the adjusting hole 30. A fourth fixing screw 31 is provided on one side of the adjusting block 29 corresponding to the adjusting hole 30. The fourth fixing screw 31 is used to tighten to limit the movement of the adjusting block 29 relative to the column 26.

[0051] The relative position of the pressure rod 27 and the wood can be adjusted by adjusting the displacement of the adjusting block 29, thereby adapting to the use of wood of different lengths.

[0052] Preferably, the loading head 28 includes a mounting base 32 and a bending pressure head 33. The output end of the pressure rod 27 is fixedly connected to the mounting base 32. The mounting base 32 is provided with at least two sliders 34. The sliders 34 are slidably connected to the mounting base 32. The sliders 34 are provided with a first mounting hole 35. The bending pressure head 33 is provided with a second mounting hole 36 corresponding to the first mounting hole 35 and is bolted to the first mounting hole 35.

[0053] Specifically, grooves 37 are formed on both sides of the mounting base 32, and one side of the slider 34 engages with the groove 37 to limit the sliding movement of the slider 34 along the length direction of the mounting base 32. Furthermore, a fifth fixing screw 38 is provided on one side of each of the two sliders 34. The fifth fixing screw 38 is used to abut against the mounting base 32 to restrict the movement of the slider 34 relative to the mounting base 32.

[0054] The two sliders 34 allow the operator to adjust their relative positions to accommodate different models of bending heads 33.

[0055] Specifically, in this embodiment, the bending indenter 33 includes interchangeable indenter units:

[0056] Two pressure heads 39 are connected to two sliders 34 by bolts for four-point bending detection.

[0057] In use, the two pressure heads 39 are connected to the two sliders 34 respectively, and the end faces of the two pressure heads 39 are made to be flush, thereby realizing four-point bending detection.

[0058] A pressure head 40 is used to connect two sliders 34 respectively for three-point bending detection.

[0059] In another embodiment, the indenter unit may also include any indenter component used in bending tests in the prior art.

[0060] Furthermore, the tensile and compressive testing unit is positioned between the bending testing unit and the lateral pressure component.

[0061] Placing the tension / compression test unit between the bending test unit and the lateral pressure component allows for a more rational spatial layout, thus avoiding interference from the tension / compression test unit during bending tests.

[0062] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A modular wood tension-compression-bending integrated testing machine, characterized in that, include: The frame (1) includes a base (2) and a mounting surface (3) provided above the base (2), and the mounting surface (3) and the base (2) form an installation space (4); The tensile and compressive testing unit includes a first tensile and compressive fastening seat (6) and a second tensile and compressive fastening seat (7) respectively disposed on the mounting surface (3) and the base (2). The first tensile and compressive fastening seat (6) and the second tensile and compressive fastening seat (7) are used to connect the two ends of the wood for tensile and compressive testing. The bending test unit includes a first bending fastener (13) and a second bending fastener (14) respectively disposed on the mounting surface (3) and the base (2). The first bending fastener (13) and the second bending fastener (14) are used to connect the two ends of the wood for bending test. Lateral pressure component, which is detachably connected to the frame (1), is used for lateral pressure during bending tests.

2. The modular wood tension-compression-bending integrated testing machine according to claim 1, wherein, The tension and compression test unit includes a first force sensor (8), which is connected to a first tension and compression fastener (6) / a second tension and compression fastener (7) and is used to detect the load on the first tension and compression fastener (6) / a second tension and compression fastener (7).

3. The modular wood tension-compression-bending integrated testing machine according to claim 1, wherein, The first bending fastener (13) and the second bending fastener (14) both include two symmetrically arranged arc-shaped support heads (15), which are used to abut against the two sides of the end of the fixed wood.

4. The modular wood tension-compression-bending integrated testing machine according to claim 1, wherein, The bending test unit also includes a displacement detection unit, which includes a displacement gauge (16) and an adjustment component (17). The displacement gauge (16) is connected to the frame (1) through the adjustment component (17), and the adjustment component (17) moves the displacement gauge (16) in three dimensions.

5. The modular wood tension-compression-bending integrated testing machine according to claim 4, wherein, The adjusting component (17) includes a mounting plate (18), which is slidably connected to the frame (1) along the height direction of the frame (1). A pressure plate (19) is provided between the mounting plate (18) and the frame (1). The pressure plate (19) is used to press against the frame (1) to restrict the movement of the mounting plate (18) relative to the frame (1). A first mounting rod (20) is movably connected to the mounting plate (18). An adjusting seat (22) is provided on the first mounting rod (20). The adjusting seat (22) moves along the length direction of the first mounting rod (20). A second mounting rod (24) is provided on the adjusting seat (22) and is perpendicular to the first mounting rod (20). The displacement gauge (16) is connected to the second mounting rod (24) and moves along the length direction of the second mounting rod (24).

6. The modular wood tension-compression-bending integrated testing machine of claim 1, wherein, The lateral pressurization component includes a column (26), a pressure rod (27), and a loading head (28). The lower end of the column (26) is fixed to the frame (1) by bolts, the upper end of the column (26) is fixedly connected to the end of the pressure rod (27), and the end of the pressure rod (27) away from the column (26) is connected to the loading head (28).

7. The modular wood tension-compression-bending integrated testing machine according to claim 6, wherein, An adjusting block (29) is movably provided at the upper end of the column (26). The position of the adjusting block (29) is adjustable along the length of the column (26). The adjusting block (29) is fixedly connected to the end of the pressure rod (27).

8. A modular integrated tensile, compressive, and bending testing machine for timber according to claim 6, characterized in that, The loading head (28) includes a mounting base (32) and a bending pressure head (33). The output end of the pressure rod (27) is fixedly connected to the mounting base (32). The mounting base (32) is provided with at least two sliders (34). The sliders (34) are slidably connected to the mounting base (32). The sliders (34) are provided with a first mounting hole (35). The bending pressure head (33) is provided with a second mounting hole (36) corresponding to the first mounting hole (35) and is bolted to the first mounting hole (35).

9. The modular wood tension-compression-bending integrated testing machine of claim 8, wherein, The bending indenter (33) includes interchangeable indenter units: Two pressure heads (39) are connected to two sliders (34) by bolts for four-point bending detection; A pressure head two (40) is used to connect two sliders (34) respectively for three-point bending detection.

10. The modular wood tension-compression-bending integrated testing machine according to any one of claims 1-9, wherein, The tensile and compressive testing unit is positioned between the bending testing unit and the lateral pressure component.

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