Building steel structure stress detection equipment

Abstract

The invention discloses building steel structure stress detection equipment which is characterized in that the side surface of a vertical plate is fixedly connected with a workbench, the workbench is provided with a hydraulic cylinder, the interior of the hydraulic cylinder is fixedly connected with a second fixing block, the second fixing block is rotatably connected with a second screw rod, the second screw rod is provided with a second sliding plate, and the upper surface of the second sliding plate is fixedly connected with a first fixing block. The surface of one side of the fixing block is fixedly connected with a fourth driving motor, the output end of the fourth driving motor is fixedly connected with a two-way threaded rod, a second sliding block is arranged on the two-way threaded rod, the upper surface of the second sliding block is fixedly connected with a first supporting plate, the first supporting plate is slidably connected with the upper surface of the workbench, and a second supporting plate is arranged on the upper surface of the first supporting plate. A supporting block is detachably connected to the upper surface of the second supporting plate, an elastic cushion layer is arranged on the upper surface of the supporting block, the detection area can be arranged in an area with the small stress gradient by changing the supporting positions on the two sides of the detection area, the interference range of high stress at the two ends is reduced, and therefore the accuracy of the detection result is ensured.

Description

Technical Field

[0001] This invention relates to the field of stress testing of building steel structures, and particularly to a stress testing device for building steel structures. Background Technology

[0002] Chinese Patent Publication No. CN113567012B discloses a stress testing device for building steel structures, which includes a lower frame. A movable operating platform assembly is installed on the top of the lower frame, and an adjustable clamping part is installed on the top of the operating platform assembly. The clamping part is used to clamp the steel structure. A torsional stress detection unit is installed on the clamping part to detect the torsional stress value of the steel structure on the clamping part. An upper frame is installed on the top of the lower frame to clamp steel structures of different sizes securely. This allows for the detection of compressive stress at different locations on the steel structure, improving the convenience and accuracy of the test. Although it can detect stress at different locations on the steel structure to a certain extent, stress concentration easily occurs at the fixed points at both ends of the steel structure when clamped, which can cause stress interference in the detection area due to stress transmission, affecting the accuracy of the test results. Therefore, we propose a stress testing device for building steel structures to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a biochar preparation device based on environmental organisms to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: It includes a vertical plate, a worktable fixedly connected to the side surface of the vertical plate, a hydraulic cylinder mounted on the worktable, a fixing block two fixedly connected inside the hydraulic cylinder, a drive motor three fixedly connected to the side surface of the fixing block two, a screw two fixedly connected to the output end of the drive motor three, the screw two being rotatably connected to the fixing block two, a sliding plate two mounted on the screw two, a fixing block one fixedly connected to the upper surface of the sliding plate two, a drive motor four fixedly connected to one side surface of the fixing block, a bidirectional threaded rod fixedly connected to the output end of the drive motor four, a slider two mounted on the bidirectional threaded rod, a support plate one fixedly connected to the upper surface of the slider two, the support plate one being slidably connected to the upper surface of the worktable, a support plate two mounted on the upper surface of the support plate one, a support block detachably connected to the upper surface of the support plate two, and an elastic pad layer mounted on the upper surface of the support block.

[0004] A top plate is fixedly connected to the upper surface of the upright plate. Two fixing strips are fixedly connected to the upper surface of the top plate. A second drive motor is fixedly connected to the side surface of the fixing strips. A lead screw is fixedly connected to the output end of the second drive motor. The lead screw is rotatably connected to the fixing strips. A sliding plate is provided on the lead screw. The sliding plate is slidably connected to the upper surface of the top plate. A hydraulic cylinder is provided on the upper surface of the sliding plate. A pressure block is fixedly connected to the output end of the hydraulic cylinder.

[0005] The upright plate is provided with a movable groove, and a slider is slidably connected in the movable groove. A rotating block is rotatably connected to one side surface of the slider. Two fixing plates are fixedly connected to the side surface of the rotating block away from the slider. A clamping mechanism is provided on the fixing plates.

[0006] Preferably, the clamping mechanism includes a fixed column, which is fixedly connected to the side surface of the rotating block. The fixed column is provided with a guide groove and a movable groove four, which are connected to each other. A guide plate is slidably connected in the guide groove. A roller is rotatably connected to one end of the guide plate away from the movable groove four, and the end of the guide plate away from the roller is an inclined surface. A wedge block is provided in the movable groove four. A connecting column is fixedly connected to the lower surface of the wedge block. The connecting column passes through the fixed plate two and extends between the two fixed plates two, and is fixedly connected to a clamping block. A spring two is fixedly connected to the upper surface of the fixed plate two above the clamping block. The spring two is located outside the connecting column. Pressure sensors are provided on both the clamping block and the pressure block.

[0007] Preferably, the clamping mechanism further includes a fixing plate, which is fixedly connected to the inner surface of the upright plate. A pressing plate is fixedly connected to one side surface of the fixing plate. The pressing plate is trapezoidal, with the inclined surface located at the upper end, and is rotatably connected to the roller.

[0008] Preferably, a drive motor is fixedly connected to the upper surface of the top plate, a screw is fixedly connected to the output end of the drive motor, and the slider is disposed on the screw.

[0009] Preferably, the top plate is provided with a second movable groove, and the output end of the hydraulic cylinder passes through the second movable groove and is connected to the pressure block.

[0010] Preferably, a limiting strip is fixedly connected to the lower surface of the workbench. Two limiting strips are provided, and the distance between the limiting strips and the two upright plates is the same. The lower surface of the slide plate passes through the hydraulic cylinder and extends below the hydraulic cylinder, and is flush with the lower surface of the limiting strip.

[0011] Preferably, both the first support plate and the second support plate are provided with slots, and insert blocks are engaged in the slots. The insert blocks are fixedly connected to the lower surface of the support blocks, and the first support plate and the second support plate are fixedly connected by bolts.

[0012] Preferably, both the support plate one and the support plate two are provided with a slot and a movable groove three. A spring one is provided in the movable groove three. One end of the spring one is in contact with the inner wall of the movable groove three, and the other end is fixedly connected to a movable block. Limiting posts and pull posts are fixedly connected to the two sides of the movable block, respectively. The limiting posts pass through the insert block and extend to the other side of the insert block. The limiting posts are slidably connected to the slot.

[0013] Preferably, a control panel is fixedly connected to the side surface of the upright plate, and the control panel is electrically connected to drive motor one, drive motor two, hydraulic cylinder, drive motor three, drive motor four, and pressure sensor.

[0014] Compared with existing technologies, the stress detection equipment for building steel structures provided by this invention has the following advantages:

[0015] 1. In this invention, by setting a sliding plate on the screw, the fixed block on the sliding plate can be moved. Then, by adjusting the bidirectional threaded rod, the distance between the two sliding blocks can be adjusted. By changing the support positions on both sides of the detection area, the detection area can be set in a region with a smaller stress gradient, reducing the interference range of high stress at both ends, thereby ensuring the accuracy of the detection results.

[0016] 2. In this invention, a rotating block is rotatably set on one side surface of the slider, and the steel structure is clamped by the clamping mechanism on the rotating block, which restricts the translational freedom of the structure and allows small rotation, avoids excessive bending moment at the fixed end, reduces local stress concentration at the fixed end, and makes the stress at both ends mainly axial force, thereby reducing stress transmission interference in the area between the support blocks.

[0017] 3. In this invention, a clamping mechanism is provided on the side surface of the rotating block, and a pressing plate is provided on the inner surface of the vertical plate. When the slider moves up and down, it drives the clamping mechanism to move up and down. Thus, when it descends, the rollers in the clamping mechanism are subjected to force, which presses the wedge block and causes it to descend. The steel structure is clamped by the clamping block. When it rises, the pressing plate does not press the rollers. The clamping block rises through the action of the second spring, and the automatic release is completed. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the overall structure of a stress detection device for building steel structures according to the present invention;

[0020] Figure 2 This is a bottom view schematic diagram of a stress detection device for building steel structures according to the present invention;

[0021] Figure 3 This is a schematic diagram of the transverse three-dimensional cross-sectional structure of a stress detection device for building steel structures according to the present invention;

[0022] Figure 4 This is a schematic diagram of the longitudinal three-dimensional cross-sectional structure of a stress detection device for building steel structures according to the present invention.

[0023] Figure 5This is a schematic diagram of the clamping mechanism structure of a stress detection device for building steel structures according to the present invention;

[0024] Figure 6 This invention relates to a stress detection device for building steel structures. Figure 3 Enlarged structural diagram at point C;

[0025] Figure 7 This is a schematic diagram of the support plate one and support plate two of a stress detection device for building steel structures according to the present invention;

[0026] Figure 8 This is a cross-sectional view of support plate one and support plate two of a stress detection device for building steel structures according to the present invention.

[0027] Figure 9 This is a cross-sectional schematic diagram of the clamping mechanism of a stress detection device for building steel structures according to the present invention.

[0028] Legend:

[0029] 1. Vertical plate; 2. Workbench; 3. Top plate; 4. Drive motor one; 5. Fixing strip; 6. Drive motor two; 7. Lead screw; 8. Slide plate one; 9. Hydraulic cylinder; 10. Movable groove one; 11. Support plate one; 12. Support plate two; 13. Limiting strip; 14. Pressure block; 15. Movable groove two; 16. Screw one; 17. Drive motor three; 18. Slide plate two; 19. Control panel; 20. Two-way threaded rod; 21. Slider one; 22. Fixing plate one; 23. Extrusion plate; 24. Fixing column; 25. Fixed... 26. Fixed plate 2; 27. Slider 2; 28. Fixed block 1; 29. ​​Drive motor 4; 30. Insert block; 31. Slot; 32. Limiting post; 33. Support block; 34. Elastic pad; 35. Slot; 36. Movable block; 37. Movable groove 3; 38. Spring 1; 39. Pull post; 40. Fixed block 2; 41. Screw 2; 42. Roller; 43. Guide plate; 44. Guide groove; 45. Movable groove 4; 46. Wedge block; 47. Spring 2; 48. Connecting post; 49. Clamping block; 40. Rotating block. Detailed Implementation

[0030] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0031] Reference Figure 1-9An embodiment of the present invention discloses a stress testing device for building steel structures, comprising: a vertical plate 1, a workbench 2 fixedly connected to the side surface of the vertical plate 1, a hydraulic cylinder 9 mounted on the workbench 2, a fixing block 39 fixedly connected inside the hydraulic cylinder 9, a drive motor 17 fixedly connected to the side surface of the fixing block 39, a screw 40 fixedly connected to the output end of the drive motor 17, the screw 40 being rotatably connected to the fixing block 39, a sliding plate 18 mounted on the screw 40, and a fixed component fixedly connected to the upper surface of the sliding plate 18. Fixed block 27, a drive motor 28 is fixedly connected to the side surface of fixed block 27, a bidirectional threaded rod 20 is fixedly connected to the output end of drive motor 28, a slider 26 is provided on the bidirectional threaded rod 20, a support plate 11 is fixedly connected to the upper surface of slider 26, the support plate 11 is slidably connected to the upper surface of worktable 2, a support plate 22 is provided on the upper surface of support plate 11, a support block 32 is detachably connected to the upper surface of support plate 22, and an elastic pad 33 is provided on the upper surface of support block 32;

[0032] A top plate 3 is fixedly connected to the upper surface of the upright plate 1. Two fixing strips 5 are fixedly connected to the upper surface of the top plate 3. A second drive motor 6 is fixedly connected to the side surface of the fixing strips 5. A lead screw 7 is fixedly connected to the output end of the second drive motor 6. The lead screw 7 is rotatably connected to the fixing strips 5. A sliding plate 8 is provided on the lead screw 7. The sliding plate 8 is slidably connected to the upper surface of the top plate 3. A hydraulic cylinder 9 is provided on the upper surface of the sliding plate 8. A pressure block 14 is fixedly connected to the output end of the hydraulic cylinder 9.

[0033] The upright plate 1 is provided with a movable groove 10, and a slider 21 is slidably connected in the movable groove 10. A rotating block 49 is rotatably connected to the side surface of the slider 21. Two fixing plates 25 are fixedly connected to the side surface of the rotating block 49 away from the slider 21. A clamping mechanism is provided on the fixing plates 25.

[0034] The clamping mechanism includes a fixed column 24, which is fixedly connected to the side surface of the rotating block 49. The fixed column 24 is provided with a guide groove 43 and a movable groove 44, which are connected to each other. A guide plate 42 is slidably connected in the guide groove 43. A roller 41 is rotatably connected to the end of the guide plate 42 away from the movable groove 44, and the end of the guide plate 42 away from the roller 41 is inclined. A wedge block 45 is provided in the movable groove 44. A connecting column 47 is fixedly connected to the lower surface of the wedge block 45. The connecting column 47 passes through the fixed plate 25 and extends between the two fixed plates 25. A clamping block 48 is fixedly connected to the upper surface of the fixed plate 25 above the clamping block 48. A spring 46 is fixedly connected to the upper surface of the fixed plate 25 above the clamping block 48. The spring 46 is located outside the connecting column 47. Pressure sensors are provided on both the clamping block 48 and the pressure block 14.

[0035] The clamping mechanism also includes a fixing plate 22, which is fixedly connected to the inner surface of the upright plate 1. A pressing plate 23 is fixedly connected to the side surface of the fixing plate 22. The pressing plate 23 is trapezoidal, with the inclined surface located at the upper end, and is rotatably connected to the roller 41.

[0036] A drive motor 4 is fixedly connected to the upper surface of the top plate 3. A screw 16 is fixedly connected to the output end of the drive motor 4. A slider 21 is set on the screw 16.

[0037] The top plate 3 is provided with a movable groove 15, and the output end of the hydraulic cylinder 9 passes through the movable groove 15 and is connected to the pressure block 14.

[0038] The lower surface of the workbench 2 is fixedly connected with a limit strip 13. There are two limit strips 13, and the distance between the limit strip 13 and the two upright plates 1 is the same. The lower surface of the slide plate 2 18 passes through the hydraulic cylinder 9 and extends below the hydraulic cylinder 9, and is flush with the lower surface of the limit strip 13.

[0039] Both support plate 11 and support plate 22 are provided with slots 30, and insert blocks 29 are engaged in slots 30. Insert blocks 29 are fixedly connected to the lower surface of support block 32, and support plate 11 and support plate 22 are fixedly connected by bolts.

[0040] Both support plate 11 and support plate 212 are provided with a slot 34 and a movable slot 36. A spring 37 is provided in the movable slot 36. One end of the spring 37 is attached to the inner wall of the movable slot 36, and the other end is fixedly connected to a movable block 35. Limiting posts 31 and pull posts 38 are fixedly connected to the two sides of the movable block 35, respectively. The limiting post 31 passes through the insert 29 and extends to the other side of the insert 29. The limiting post 31 is slidably connected to the slot 34.

[0041] A control panel 19 is fixedly connected to one side surface of the upright plate 1. The control panel 19 is electrically connected to drive motor 4, drive motor 6, hydraulic cylinder 9, drive motor 17, drive motor 28, and pressure sensor.

[0042] Specifically, when using this building steel structure stress testing equipment, firstly, the building steel structure to be tested is placed on the elastic pad 33 of the support block 32. The drive motor 28 is started via the control panel 19. The drive motor 28 drives the bidirectional threaded rod 20 to rotate, causing the slider 26 to move on the bidirectional threaded rod 20, which in turn drives the support plate 11 to slide on the worktable 2. The distance between the two support plates 11 is adjusted. Simultaneously, according to the shape and size of the steel structure, a suitable support block 32 can be replaced by cooperating the insert 29 with the slot 30 and fixing it with the limiting post 31. The drive motor 17 drives the screw 40 to rotate, causing the slide plate 18 to move, thereby adjusting the front and rear position of the support block 32 to ensure stable support of the steel structure. Next, the drive motor 4 is started, driving the screw 16 to rotate, causing the slider 21 to move up and down within the movable slot 10. Simultaneously, the rotating block 49 can be rotated to adjust the angle. When the slider 21 descends, the roller 41... When the guide plate 42 contacts and is compressed by the extrusion plate 23, it slides in the guide groove 43. Its inclined surface pushes the wedge block 45 to move down in the movable groove 44. The wedge block 45 drives the clamping block 48 to move down through the connecting column 47, clamping the steel structure. The second spring 46 is compressed. At this time, the pressure sensor on the clamping block 48 can detect the clamping force. Then, the second drive motor 6 is started, which drives the lead screw 7 to rotate, causing the slide plate 8 to slide on the top plate 3, adjusting the horizontal position of the pressure block 14. Then, the hydraulic cylinder 9 is started, which pushes the pressure block 14 down. The pressure sensor on the pressure block 14 detects the pressure on the steel structure. At the same time, the support position can be further fine-tuned by the third drive motor 17 and the fourth drive motor 28. By observing the changes in the pressure sensor values, the stress detection of the building steel structure is completed. After the detection is completed, each drive motor and hydraulic cylinder is reset. At this time, the first slider 21 rises, the roller 41 is released, the second spring 46 pushes the clamping block 48 to reset, and the steel structure is released.

[0043] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A stress testing device for building steel structures, characterized in that, include: A vertical plate (1) is fixedly connected to a workbench (2) on its side surface. A hydraulic cylinder (9) is installed on the workbench (2). A fixing block two (39) is fixedly connected inside the hydraulic cylinder (9). A drive motor three (17) is fixedly connected to the side surface of the fixing block two (39). A screw two (40) is fixedly connected to the output end of the drive motor three (17). The screw two (40) is rotatably connected to the fixing block two (39). A sliding plate two (18) is installed on the screw two (40). A fixing block one (27) is fixedly connected to the upper surface of the sliding plate two (18). (27) A drive motor four (28) is fixedly connected to the side surface. A bidirectional threaded rod (20) is fixedly connected to the output end of the drive motor four (28). A slider two (26) is provided on the bidirectional threaded rod (20). A support plate one (11) is fixedly connected to the upper surface of the slider two (26). The support plate one (11) is slidably connected to the upper surface of the worktable (2). A support plate two (12) is provided on the upper surface of the support plate one (11). A support block (32) is detachably connected to the upper surface of the support plate two (12). An elastic pad layer (33) is provided on the upper surface of the support block (32). A top plate (3) is fixedly connected to the upper surface of the upright plate (1). Two fixing strips (5) are fixedly connected to the upper surface of the top plate (3). A second drive motor (6) is fixedly connected to the side surface of the fixing strip (5). A lead screw (7) is fixedly connected to the output end of the second drive motor (6). The lead screw (7) is rotatably connected to the fixing strip (5). A sliding plate (8) is provided on the lead screw (7). The sliding plate (8) is slidably connected to the upper surface of the top plate (3). A hydraulic cylinder (9) is provided on the upper surface of the sliding plate (8). A pressure block (14) is fixedly connected to the output end of the hydraulic cylinder (9). The upright plate (1) is provided with a movable groove (10), and a slider (21) is slidably connected in the movable groove (10). A rotating block (49) is rotatably connected to the side surface of the slider (21). Two fixing plates (25) are fixedly connected to the side surface of the rotating block (49) away from the slider (21). A clamping mechanism is provided on the fixing plate (25).

2. The stress testing equipment for building steel structures according to claim 1, characterized in that, The clamping mechanism includes a fixed column (24), which is fixedly connected to the side surface of the rotating block (49). The fixed column (24) is provided with a guide groove (43) and a movable groove (44). The guide groove (43) and the movable groove (44) are connected. A guide plate (42) is slidably connected in the guide groove (43). A roller (41) is rotatably connected to one end of the guide plate (42) away from the movable groove (44). The end of the guide plate (42) away from the roller (41) is an inclined surface. A wedge block (45) is provided in the moving groove (44). A connecting column (47) is fixedly connected to the lower surface of the wedge block (45). The connecting column (47) passes through the fixed plate (25) and extends between the two fixed plates (25). A clamping block (48) is fixedly connected to the upper surface of the fixed plate (25) above the clamping block (48). A spring (46) is fixedly connected to the upper surface of the fixed plate (25) above the clamping block (48). The spring (46) is located outside the connecting column (47). Pressure sensors are provided on both the clamping block (48) and the pressure block (14).

3. The stress testing equipment for building steel structures according to claim 1, characterized in that, The clamping mechanism also includes a fixing plate (22), which is fixedly connected to the inner surface of the upright plate (1). A pressing plate (23) is fixedly connected to the side surface of the fixing plate (22). The pressing plate (23) is trapezoidal, with the inclined surface located at the upper end, and is tumblingly connected to the roller (41).

4. The stress testing equipment for building steel structures according to claim 1, characterized in that, A drive motor (4) is fixedly connected to the upper surface of the top plate (3), and a screw (16) is fixedly connected to the output end of the drive motor (4). The slider (21) is mounted on the screw (16).

5. The stress testing equipment for building steel structures according to claim 1, characterized in that, The top plate (3) is provided with a movable groove two (15), and the output end of the hydraulic cylinder (9) passes through the movable groove two (15) and is connected to the pressure block (14).

6. The stress testing equipment for building steel structures according to claim 1, characterized in that, The lower surface of the workbench (2) is fixedly connected to a limiting strip (13). There are two limiting strips (13), and the distance between the limiting strip (13) and the two upright plates (1) is the same. The lower surface of the slide plate (18) passes through the hydraulic cylinder (9) and extends below the hydraulic cylinder (9), and is flush with the lower surface of the limiting strip (13).

7. The stress testing equipment for building steel structures according to claim 1, characterized in that, Both the first support plate (11) and the second support plate (12) are provided with slots (30), and inserts (29) are engaged in the slots (30). The inserts (29) are fixedly connected to the lower surface of the support block (32), and the first support plate (11) and the second support plate (12) are fixedly connected by bolts.

8. The stress testing equipment for building steel structures according to claim 1, characterized in that, Both the support plate 1 (11) and the support plate 2 (12) are provided with a slot (34) and a movable slot 3 (36). A spring 1 (37) is provided in the movable slot 3 (36). One end of the spring 1 (37) is attached to the inner wall of the movable slot 3 (36), and the other end is fixedly connected to a movable block (35). Limiting posts (31) and pull posts (38) are fixedly connected to the two sides of the movable block (35), and the limiting posts (31) pass through the insert block (29) and extend to the other side of the insert block (29). The limiting posts (31) and the slot (34) are slidably connected.

9. A stress testing device for building steel structures according to claim 1, characterized in that, A control panel (19) is fixedly connected to the side surface of the upright plate (1). The control panel (19) is electrically connected to the drive motor one (4), drive motor two (6), hydraulic cylinder (9), drive motor three (17), drive motor four (28), and pressure sensor.

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