A quality inspection device for steel structure units for engineering

Abstract

The present invention belongs to the field of material strength detection, and specifically discloses a quality detection device for a steel structure unit for engineering, including a main body support mechanism, a self-pausing sliding displacement mechanism, an adjustable equidistant pressure mechanism and a deformation detection alarm mechanism, wherein the main body support mechanism includes a main body bottom plate, a gantry bracket and a workpiece fixing assembly, wherein the gantry bracket is arranged on the main body bottom plate, and the workpiece fixing assembly is arranged on the main body bottom plate. The present invention creatively proposes a self-pausing sliding displacement mechanism, which can adaptively control the coupling and decoupling of a combined nut assembly, so that when a one-way slide is pushed laterally, when the one-way slide is directly above a measuring point, the one-way slide can be temporarily decoupled to maintain the current pressure loading for a certain period of time, so that the device can meet the technical requirements of pressure measurement.

Description

Technical Field

[0001] The invention belongs to the technical field of material strength detection, and specifically refers to a quality detection device for a steel structure unit for engineering. Background Art

[0002] Steel structure units often refer to a combination of steel columns, steel beams, steel trusses, steel columns, etc., which are generally pre-installed in the factory according to demand and only require simple positioning and installation at the construction site. As a relatively complete and independent structural unit, this component needs to be sampled or tested one by one for quality when leaving the factory and before installation.

[0003] Quality inspection mainly involves strength and stiffness. When the material is known, the deformation of the component is usually tested by applying pressure to comprehensively determine whether its quality meets the standards.

[0004] The structural unit generally divides the overall frame into several triangles through diagonal braces. When dividing the triangles, diagonal braces are often added at the midline of the triangle. Therefore, there are several equally spaced points for support under the crossbeam of the structural unit body. When testing, the test points are mostly located in the middle of these support points. Since the support points are evenly distributed, the test points should also be evenly distributed.

[0005] If continuous pressure is applied during the continuous rolling process, not only will the direction be easily deviated due to excessive dynamic extrusion pressure, but this detection method also places higher technical requirements on parts such as guide rails and bearings. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a quality inspection device for engineering steel structure units. Based on the characteristics of uniform linear distribution of the inspection points of the steel structure unit, the present invention proposes a technical solution for preset, equally spaced positioning of the measurement points; not only that, in order to simplify the structure and optimize the use logic, the present invention also creatively proposes a self-pausing sliding displacement mechanism, which can adaptively control the coupling and decoupling of the combined nut assembly, so that when the one-way slide is pushed laterally, when the one-way slide is directly above the measurement point, the current pressure loading can be maintained for a certain period of time by temporarily decoupling, so that the device can meet the technical requirements of pressure measurement;

[0007] Moreover, the present invention can not only adjust the spacing of the measuring points, but also adjust the pressure applied during measurement through an adjustable equidistant pressure mechanism, thereby overcoming the technical contradiction that the pressure roller must rotate with the rolling wheel, but the two cannot be relatively still.

[0008] The technical solution adopted by the present invention is as follows: The present invention proposes a quality inspection device for engineering steel structure units, including a main body support mechanism, a self-pause sliding displacement mechanism, an adjustable equidistant pressure mechanism and a deformation detection alarm mechanism, the main body support mechanism includes a main body base plate, a gantry bracket and a workpiece fixing assembly, the gantry bracket is arranged on the main body base plate, and the workpiece fixing assembly is arranged on the main body base plate.

[0009] Furthermore, the workpiece fixing assembly includes a structural unit body and a side bracket, the structural unit body is detachably mounted on the main body bottom plate by bolts at its bottom, the side bracket is mounted on the main body bottom plate, the structural unit body is located between the two side brackets, and the rolling wheel is in rolling contact with the upper surface of the side bracket.

[0010] Through the rolling contact between the side bracket and the rolling wheel, the adjustable equidistant pressure mechanism can maintain continuous rotation (except when paused) during the lateral movement of the one-way sliding component and when the torsion leg is not in contact with the structural unit body, thereby achieving the technical purpose of equidistant intermittent pressure measurement.

[0011] The self-pause sliding displacement mechanism includes a screw drive assembly, a one-way sliding assembly, a combined nut assembly and an impact unlocking assembly. The screw drive assembly is arranged at the bottom of the gantry bracket, the one-way sliding assembly is arranged at the bottom of the gantry bracket, the combined nut assembly is arranged on the one-way sliding assembly, and the impact unlocking assembly is arranged on the one-way sliding assembly.

[0012] Through the linkage of the self-pause sliding displacement mechanism, the combined nut assembly can be automatically unlocked briefly when the adjustable equidistant pressure mechanism rotates to a vertical state, thereby achieving intermittent sliding of the automatic one-way slide during the continuous driving of the screw drive assembly, and the one-way slide will only be temporarily decoupled when the pitch adjustment assembly is close to the vertical state.

[0013] Preferably, the one-way sliding assembly comprises a sliding guide rail, a one-way slider and a one-way slide plate, the sliding guide rail is fixedly connected to the gantry bracket, the one-way slider is slidably engaged on the sliding guide rail, and the one-way slide plate is fixedly connected to the one-way slider.

[0014] Since the threaded transmission of the screw drive assembly has a self-locking function, and the center nut and the nut fixing seat can only rotate relative to each other but cannot slide relative to each other, the screw drive assembly can push the one-way slide plate to move laterally. However, if the one-way slide plate is subjected to external lateral force, even in the stage where the center nut and the nut fixing seat are decoupled, the one-way slide plate and the center nut cannot be pushed to move laterally.

[0015] As a further preferred embodiment of the present invention, the combined nut assembly includes a nut fixing seat, a center nut, a movable stop block and a stop block reset spring. The nut fixing seat is fixedly connected to the one-way slide, and side slide grooves are symmetrically provided on both sides of the nut fixing seat. The center nut is rotatably arranged in the nut fixing seat, a nut groove is provided on the center nut, and a fixed stop bar is provided on the nut groove. The movable stop block is rotatably arranged in the side slide groove, and a stop block cantilever end is also provided on the movable stop block, and the stop block cantilever end is connected to the nut fixing seat through a stop block reset spring.

[0016] The coupling and structure of the nut fixing seat and the center nut are controlled by the extension and retraction of the movable stop block. When the movable stop block is extended, the movable stop block and the fixed stop bar block each other. At this time, the center nut cannot rotate along with the screw drive assembly, so it can push the one-way slide board to move laterally through the thread cooperation; in the decoupling stage, the center nut rotates along with the screw drive assembly, and no lateral thrust can be generated at this time; through a short period of decoupling, the adjustable equidistant pressure mechanism can stay in the pressure position for a period of time, thereby achieving the technical effect of pressure detection with a fixed duration.

[0017] Preferably, the impact unlocking assembly includes an impact sliding bracket, a roller fork bracket, an impact plate and an impact energy storage spring. The impact sliding bracket is slidably arranged on the one-way slide plate. The impact sliding bracket is connected to the one-way slide plate through the impact energy storage spring. A bottom lever is provided under the impact sliding bracket. The roller fork bracket is fixedly connected to the bottom of the one-way slide plate, and the impact plate is arranged on the rotating rolling assembly.

[0018] By means of the rebound impact of the impact sliding bracket, the rotational swing of the movable block can be controlled, thereby controlling the decoupling of the nut fixing seat and the center nut. Since the impact sliding bracket rebounds only once within a measuring cycle, the technical effect of controlling the decoupling of the combined nut assembly at a specific time can be achieved through the cooperation between the bottom lever and the impact plate.

[0019] Furthermore, the adjustable equidistant pressure mechanism includes a rotating rolling component and a pitch adjustment component. The rotating rolling component is rotatably arranged in the impact unlocking component, and the pitch adjustment component is arranged in the rotating rolling component.

[0020] Preferably, the rotating rolling assembly includes a pressure roller, a rolling wheel, a pressure adjusting sleeve and a pressure spring, the pressure roller is rotatably arranged in a roller fork frame, the impact plate is fixed to the pressure roller, a center threaded hole is provided at the center position of the pressure roller, the rolling wheels are symmetrically arranged on both sides of the pressure roller, the rolling wheel and the pressure roller are rotatably connected, the pressure adjusting sleeve is threadedly connected to the center threaded hole, and the pressure spring is arranged at the bottom of the pressure adjusting sleeve.

[0021] Since the position of the telescopic rod in the vertical state remains unchanged, the compression amount of the pressure spring in the pressure state can be adjusted by adjusting the position of the pressure adjusting sleeve, thereby adjusting the detection pressure.

[0022] As a further preferred embodiment of the present invention, the pitch adjustment assembly includes a pitch adjustment sleeve, a telescopic rod, a torsion leg, a torsion main shaft and a pre-positioning torsion spring. The pitch adjustment sleeve and the pressure adjustment sleeve are threadedly connected, the telescopic rod is slidably arranged in the pitch adjustment sleeve, the torsion main shaft is fixed to the end of the telescopic rod, the torsion leg is rotatably arranged on the torsion main shaft, and the pre-positioning torsion spring is arranged between the torsion main shaft and the torsion leg.

[0023] By adjusting the pitch adjustment sleeve, the length of the telescopic rod extended in a free state can be changed, thereby adjusting the spacing of the detection points.

[0024] Furthermore, the deformation detection alarm mechanism includes a relative stretching component and a position feedback component, the relative stretching component is arranged on the gantry bracket, and the position feedback component is arranged on the gantry bracket.

[0025] Preferably, the relative tensioning assembly includes a steering block, a tension rope and a feedback sleeve, the steering block is fixed to the outer surface of the gantry bracket, the tension rope and the steering block are in sliding contact, the feedback sleeve is placed on the gantry bracket, and a scale slide groove is provided above the feedback sleeve.

[0026] When the structural unit body is deformed, the structural unit body will bend downward laterally, and the side beam will move closer to the middle position. At this time, the deformation of the structural unit body can be fed back to the relative position of the adjusting plate and the sliding plate through the tension rope. By arranging contact switches on the adjusting plate and the sliding plate, an alarm can be triggered when the positions of the adjusting plate and the sliding plate are close to a certain extent.

[0027] As a further preferred embodiment of the present invention, the position feedback assembly includes an adjustment plate, a sliding plate, a tension rod and a feedback spring. The adjustment plate can be adjusted and slid in the feedback sleeve. The sliding plate slides freely in the feedback sleeve. The feedback spring is arranged between the feedback sleeve and the bottom and the sliding plate. The tension rod is fixed in the sliding plate. Two groups of tension ropes are provided. One group of the tension ropes is arranged between one end of the structural unit body and the feedback sleeve, and the other group of the feedback sleeve is arranged between the other end of the structural unit body and the tension rod.

[0028] The beneficial effects achieved by the present invention using the above structure are as follows:

[0029] (1) Through the rolling contact between the side bracket and the rolling wheel, the adjustable equidistant pressure mechanism can maintain continuous rotation (except when paused) during the lateral movement of the one-way sliding component and when the torsion leg is not in contact with the structural unit body, thereby achieving the technical purpose of equidistant intermittent pressure measurement.

[0030] (2) Through the linkage of the self-pausing sliding displacement mechanism, the combined nut assembly can be automatically unlocked temporarily when the adjustable equidistant pressure mechanism rotates to the vertical state, thereby realizing the intermittent sliding of the automatic one-way slide during the continuous driving of the screw drive assembly, and the one-way slide will be temporarily decoupled only when the pitch adjustment assembly is close to the vertical state.

[0031] (3) Since the threaded transmission of the screw drive assembly has a self-locking function, and the center nut and the nut fixing seat can only rotate relative to each other but cannot slide relative to each other, the screw drive assembly can push the one-way slide plate to move laterally. However, if the one-way slide plate is subjected to external lateral force, even in the stage where the center nut and the nut fixing seat are decoupled, it is impossible to push the one-way slide plate and the center nut to move laterally.

[0032] (4) The coupling and structure of the nut fixing seat and the center nut are controlled by the extension and retraction of the movable stop block. When the movable stop block is extended, the movable stop block and the fixed stop bar block each other. At this time, the center nut cannot rotate along with the screw drive assembly, so it can push the one-way slide plate to move horizontally through the threaded fit; in the decoupling stage, the center nut rotates along with the screw drive assembly, and no lateral thrust can be generated at this time; through a short period of decoupling, the adjustable equidistant pressure mechanism can stay at the pressure position for a period of time, thereby achieving the technical effect of pressure detection with a fixed duration.

[0033] (5) The rebound impact of the impact sliding bracket can control the rotation and swing of the movable block, thereby controlling the decoupling of the nut fixing seat and the center nut. Since the impact sliding bracket rebounds only once within a measurement cycle, the cooperation between the bottom lever and the impact plate can achieve the technical effect of controlling the decoupling of the combined nut assembly at a specific time.

[0034] (6) Since the position of the telescopic rod in the vertical state remains unchanged, the compression amount of the pressure spring in the pressure-applying state can be adjusted by adjusting the position of the pressure-adjusting sleeve, thereby adjusting the detection pressure.

[0035] (7) By adjusting the pitch adjustment sleeve, the length of the telescopic rod extended in the free state can be changed, thereby adjusting the spacing of the detection points.

[0036] (8) When the structural unit body is deformed, the structural unit body will bend downward in the lateral direction, and the side beam will move closer to the middle position. At this time, the deformation of the structural unit body can be fed back to the relative position of the adjustment plate and the sliding plate through the tension rope. If a contact switch is set on the adjustment plate and the sliding plate, an alarm can be triggered when the position of the adjustment plate and the sliding plate is close to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A three-dimensional diagram of a quality inspection device for a steel structure unit for engineering proposed by the present invention;

[0038] Figure 2 This is a front view of a quality inspection device for a steel structure unit for engineering proposed by the present invention;

[0039] Figure 3 This is a left view of a quality inspection device for a steel structure unit for engineering proposed by the present invention;

[0040] Figure 4 A top view of a quality inspection device for a steel structure unit for engineering proposed by the present invention;

[0041] Figure 5 for Figure 2 A cross-sectional view along the cutting line AA;

[0042] Figure 6 for Figure 3 A cross-sectional view along the cutting line BB;

[0043] Figure 7 for Figure 5 A cross-sectional view along the cutting line CC;

[0044] Figure 8 for Figure 2 A cross-sectional view along the cutting line DD;

[0045] Fig. 9 An exploded view of a quality inspection device for a steel structure unit for engineering proposed by the present invention;

[0046] Fig.10 for Figure 5 A partial enlarged view of point Ⅰ in the middle;

[0047] Fig.11 for Figure 5 A partial enlarged view of the middle II;

[0048] Fig.12 for Figure 6 A partial enlarged view of the middle part III;

[0049] Fig.13 for Figure 8A partial enlarged view of the middle IV;

[0050] Fig.14 for Figure 7 A partial enlarged view of point V in the middle.

[0051] Among them, 1. main body support mechanism, 2. self-pausing sliding displacement mechanism, 3. adjustable equidistant pressure mechanism, 4. deformation detection alarm mechanism, 5. main body bottom plate, 6. gantry bracket, 7. workpiece fixing assembly, 8. structural unit body, 9. side bracket, 10. screw drive assembly, 11. one-way sliding assembly, 12. combined nut assembly, 13. impact unlocking assembly, 14. sliding guide rail, 16. one-way slider, 17. one-way slide plate, 18. nut fixing seat, 19. center nut, 20. movable block, 21. block reset spring, 22. impact sliding bracket, 23. roller fork frame, 24. impact plate, 25. side slide groove, 26. , nut groove, 27, fixed stop bar, 28, block cantilever end, 29, bottom lever, 30, rotating rolling assembly, 31, pitch adjustment assembly, 32, pressure roller, 33, rolling wheel, 34, pressure adjustment sleeve, 35, pressure spring, 36, pitch adjustment sleeve, 37, telescopic rod, 38, torsion leg, 39, torsion spindle, 40, pre-positioning torsion spring, 41, center threaded hole, 42, relative tension assembly, 43, position feedback assembly, 44, steering block, 45, tension rope, 46, feedback sleeve, 47, adjustment plate, 48, sliding plate, 49, tension rod, 50, scale slide groove part, 51, impact energy storage spring, 52, feedback spring.

[0052] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0055] like Figure 1 to Figure 14 As shown, the present invention proposes a quality inspection device for engineering steel structure units, including a main body support mechanism 1, a self-pausing sliding displacement mechanism 2, an adjustable equidistant pressure mechanism 3 and a deformation detection alarm mechanism 4, the main body support mechanism 1 includes a main body base plate 5, a gantry bracket 6 and a workpiece fixing assembly 7, the gantry bracket 6 is arranged on the main body base plate 5, and the workpiece fixing assembly 7 is arranged on the main body base plate 5.

[0056] The workpiece fixing assembly 7 includes a structural unit body 8 and a side bracket 9. The structural unit body 8 is detachably mounted on the main body bottom plate 5 by bolts at its bottom. The side bracket 9 is mounted on the main body bottom plate 5. The structural unit body 8 is located between the two side brackets 9. The rolling wheel 33 is in rolling contact with the upper surface of the side bracket 9.

[0057] Through the rolling contact between the side bracket 9 and the rolling wheel 33, the adjustable equally spaced pressure mechanism 3 can be kept rotating continuously (except when paused) during the lateral movement of the one-way sliding component 11 and when the torsion leg 38 is not in contact with the structural unit body 8, thereby achieving the technical purpose of equally spaced intermittent pressure measurement.

[0058] The deformation detection alarm mechanism 4 includes a relative stretching component 42 and a position feedback component 43 . The relative stretching component 42 is arranged on the gantry bracket 6 , and the position feedback component 43 is arranged on the gantry bracket 6 .

[0059] The relative tensioning assembly 42 includes a steering block 44, a tension rope 45 and a feedback sleeve 46. The steering block 44 is fixedly connected to the outer surface of the gantry bracket 6. The tension rope 45 and the steering block 44 are in sliding contact. The feedback sleeve 46 is placed on the gantry bracket 6. A scale slide groove portion 50 is provided above the feedback sleeve 46.

[0060] When the structural unit body 8 is deformed, the structural unit body 8 will bend downward laterally, and the side beam will move closer to the middle position. At this time, the deformation of the structural unit body 8 can be fed back to the relative positions of the adjustment plate 47 and the sliding plate 48 through the tension rope 45. If a contact switch is set on the adjustment plate 47 and the sliding plate 48, an alarm can be triggered when the positions of the adjustment plate 47 and the sliding plate 48 are close to a certain extent.

[0061] The position feedback assembly 43 includes an adjustment plate 47, a sliding plate 48, a tension rod 49 and a feedback spring 52. The adjustment plate 47 can slide adjustably in the feedback sleeve 46. The sliding plate 48 slides freely in the feedback sleeve 46. The feedback spring 52 is arranged between the feedback sleeve 46 and the bottom and the sliding plate 48. The tension rod 49 is fixedly connected to the sliding plate 48. Two groups of tension ropes 45 are provided. One group of tension ropes 45 is arranged between one end of the structural unit body 8 and the feedback sleeve 46, and the other group of feedback sleeve 46 is arranged between the other end of the structural unit body 8 and the tension rod 49.

[0062] The self-pause sliding displacement mechanism 2 includes a screw drive assembly 10, a one-way sliding assembly 11, a combined nut assembly 12 and an impact unlocking assembly 13. The screw drive assembly 10 is arranged at the bottom of the gantry bracket 6, the one-way sliding assembly 11 is arranged at the bottom of the gantry bracket 6, the combined nut assembly 12 is arranged on the one-way sliding assembly 11, and the impact unlocking assembly 13 is arranged on the one-way sliding assembly 11.

[0063] Through the linkage of the self-pause sliding displacement mechanism 2, the combined nut assembly 12 can be automatically unlocked temporarily when the adjustable equidistant pressure mechanism 3 rotates to a vertical state, thereby realizing intermittent sliding of the automatic one-way slide plate 17 during the continuous driving of the screw drive assembly 10, and the one-way slide plate 17 will be temporarily decoupled only when the pitch adjustment assembly 31 is close to the vertical state.

[0064] The one-way sliding assembly 11 includes a sliding rail 14 , a one-way slider 16 and a one-way slide plate 17 . The sliding rail 14 is fixedly connected to the gantry bracket 6 . The one-way slider 16 is slidably engaged on the sliding rail 14 . The one-way slide plate 17 is fixedly connected to the one-way slider 16 .

[0065] Since the threaded transmission of the screw drive assembly 10 has a self-locking function, and the center nut 19 and the nut fixing seat 18 can only rotate relative to each other but cannot slide relative to each other, the screw drive assembly 10 can push the one-way slide 17 to move laterally. However, if the one-way slide 17 is subjected to external lateral force, even in the stage where the center nut 19 and the nut fixing seat 18 are decoupled, the one-way slide 17 and the center nut 19 cannot be pushed to move laterally.

[0066] The combined nut assembly 12 includes a nut fixing seat 18, a center nut 19, a movable stopper 20 and a stopper return spring 21. The nut fixing seat 18 is fixedly connected to the one-way slide 17. Side grooves 25 are symmetrically arranged on both sides of the nut fixing seat 18. The center nut 19 is rotatably arranged in the nut fixing seat 18. A nut groove 26 is arranged on the center nut 19. A fixed stopper 27 is arranged on the nut groove 26. The movable stopper 20 is rotatably arranged in the side groove 25. A stopper cantilever end 28 is also arranged on the movable stopper 20. The stopper cantilever end 28 is connected to the nut fixing seat 18 through a stopper return spring 21.

[0067] The coupling and structure of the nut fixing seat 18 and the center nut 19 are controlled by the extension and retraction of the movable stop block 20. When the movable stop block 20 is extended, the movable stop block 20 and the fixed stop bar 27 block each other. At this time, the center nut 19 cannot rotate with the screw drive assembly 10, so it can push the one-way slide plate 17 to move horizontally through threaded cooperation; in the decoupling stage, the center nut 19 rotates with the screw drive assembly 10, and no lateral thrust can be generated at this time; through a short period of decoupling, the adjustable equidistant pressure mechanism 3 can stay in the pressure position for a period of time, thereby achieving the technical effect of pressure detection with a fixed duration.

[0068] The impact unlocking assembly 13 includes an impact sliding bracket 22, a roller fork bracket 23, an impact plate 24 and an impact energy storage spring 51. The impact sliding bracket 22 is slidably arranged on the one-way skateboard 17. The impact sliding bracket 22 is connected to the one-way skateboard 17 through the impact energy storage spring 51. A bottom lever 29 is provided below the impact sliding bracket 22. The roller fork bracket 23 is fixedly connected to the bottom of the one-way skateboard 17. The impact plate 24 is arranged on the rotating rolling assembly 30.

[0069] By means of the rebound impact of the impact sliding bracket 22, the rotational swing of the movable stopper 20 can be controlled, thereby controlling the decoupling of the nut fixing seat 18 and the center nut 19. Since the impact sliding bracket 22 rebounds only once within a measuring cycle, the technical effect of controlling the decoupling of the combined nut assembly 12 at a specific time can be achieved through the cooperation between the bottom lever 29 and the impact lever plate 24.

[0070] The adjustable equidistant pressure mechanism 3 includes a rotating rolling component 30 and a pitch adjusting component 31 . The rotating rolling component 30 is rotatably arranged in the impact unlocking component 13 , and the pitch adjusting component 31 is arranged in the rotating rolling component 30 .

[0071] The rotating rolling assembly 30 includes a pressure roller 32, a rolling wheel 33, a pressure regulating sleeve 34 and a pressure spring 35. The pressure roller 32 is rotatably arranged in the roller fork frame 23, the impact plate 24 is fixed to the pressure roller 32, a central threaded hole 41 is provided at the center position of the pressure roller 32, the rolling wheels 33 are symmetrically arranged on both sides of the pressure roller 32, the rolling wheels 33 and the pressure roller 32 are rotatably connected, the pressure regulating sleeve 34 is threadedly connected to the central threaded hole 41, and the pressure spring 35 is arranged at the bottom of the pressure regulating sleeve 34.

[0072] Since the position of the telescopic rod 37 in the vertical state remains unchanged, the compression amount of the pressure spring 35 in the pressure state can be adjusted by adjusting the position of the pressure regulating sleeve 34, thereby adjusting the detection pressure.

[0073] The pitch adjustment assembly 31 includes a pitch adjustment sleeve 36, a telescopic rod 37, a torsion leg 38, a torsion main shaft 39 and a pre-positioning torsion spring 40. The pitch adjustment sleeve 36 and the pressure adjustment sleeve 34 are threadedly connected, the telescopic rod 37 is slidably engaged in the pitch adjustment sleeve 36, the torsion main shaft 39 is fixed to the end of the telescopic rod 37, the torsion leg 38 is rotatably arranged on the torsion main shaft 39, and the pre-positioning torsion spring 40 is arranged between the torsion main shaft 39 and the torsion leg 38.

[0074] By adjusting the pitch adjustment sleeve 36 , the length of the telescopic rod 37 extended in a free state can be changed, thereby adjusting the spacing between the detection points.

[0075] During specific use, the structural unit generally divides the overall frame into several triangles through diagonal braces. When dividing the triangles, diagonal braces are often added at the midline of the triangles. Therefore, there are several equally spaced points for support under the crossbeam of the structural unit body 8. When testing, the test points are mostly located in the middle of these support points. Since the support points are evenly distributed, the test points should also be evenly distributed.

[0076] First, the user needs to fix the structural unit body 8 on the main body bottom plate 5 through the bottom bolts, and then start the motor of the screw drive assembly 10 after adjusting the other mechanisms of the device. When the screw in the screw drive assembly 10 rotates slowly, the center nut 19 cannot rotate due to the mutual blocking between the fixed stop bar 27 and the movable stop block 20. At this time, the one-way slide plate 17 is pushed to slide through the relative rotation and thread transmission between the center nut 19 and the screw drive assembly 10;

[0077] When the one-way skateboard 17 slides, it will move laterally with the pressure roller 32 and the rolling wheel 33 through the roller fork 23. Since there is rotational resistance between the pressure roller 32 and the rolling wheel 33, when the torsion leg 38 does not contact the structural unit body 8, the pressure roller 32 will rotate along with the rolling wheel 33 through the rolling contact between the rolling wheel 33 and the side bracket 9.

[0078] Due to the presence of the pre-positioning torsion spring 40, when the torsion leg 38 is about to contact the structural unit body 8, it will maintain an angle that is nearly parallel to the upper surface of the structural unit body 8 (to ensure sufficient friction and avoid slipping), and will not swing freely; after the torsion leg 38 contacts the upper surface of the structural unit body 8, although the rolling wheel 33 will continue to apply a force to the pressure roller 32 to make it rotate, the rotation of the pressure roller 32 and the rolling wheel 33 are no longer synchronized;

[0079] At this time, the lateral pushing force of the one-way slide 17 and the torque direction of the force applied to the pressure roller 32 by the rolling wheel 33 are the same, so the pressure roller 32 rotates while the contact point between the torsion leg 38 and the structural unit body 8 remains fixed.

[0080] When the impact plate 24 follows the rotation of the pressure roller 32, it will contact the bottom lever 29 and push the impact sliding bracket 22 to slide through the bottom lever 29. As the pressure roller 32 rotates, when the telescopic rod 37 turns to a vertical state, the impact plate 24 is just separated from the bottom lever 29. At this time, the impact sliding bracket 22 rebounds under the elastic force of the impact energy storage spring 51 and hits the cantilever end 28 of the stopper. After the cantilever end 28 of the stopper is hit, it drives the movable stopper 20 to rotate and retract.

[0081] When the movable stopper 20 rotates and retracts, the fixed stopper 27 loses the obstruction of the movable stopper 20 and rotates in the nut fixing seat 18. At this time, the central nut 19 and the screw of the screw drive assembly 10 do not rotate relative to each other. Therefore, the central nut 19 cannot push the one-way slide plate 17 to continue sliding when rotating. During this process, the one-way slide plate 17 will remain paused to achieve continuous pressure on the measuring point.

[0082] After the movable stopper 20 retracts briefly, it will automatically reset under the elastic force of the stopper reset spring 21. Therefore, when the center nut 19 rotates a certain angle and the fixed stopper 27 contacts the movable stopper 20 again, it will continue to push the one-way slide plate 17 to slide through thread transmission.

[0083] By cyclically implementing the above steps, the two processes of “lateral movement” and “positioning and pressing” will be performed alternately during the continuous rotation of the screw drive assembly 10 .

[0084] During the measurement process, if the strength of the structural unit body 8 is insufficient, the crossbeam of the structural unit body 8 will bend downward, and the top positions of the two side beams will move closer to the middle. At this time, through the linkage of the tension rope 45, relative slip will occur between the feedback sleeve 46 and the tension rod 49, and relative slip will also occur between the adjustment plate 47 and the sliding plate 48. A contact switch can be set between the adjustment plate 47 and the sliding plate 48 to trigger an alarm when the positions of the two are close to a certain degree.

[0085] By adjusting the position of the adjustment plate 47, the initial distance between the adjustment plate 47 and the sliding plate 48 can be changed, so as to flexibly set the deformation amount at the top of the structural unit body 8 when the alarm is triggered; at the same time, the relative position changes of the adjustment plate 47 and the sliding plate 48 can also be read at any time through the scale at the scale slide groove part 50.

[0086] Since the position of the telescopic rod 37 relative to the pressure roller 32 remains unchanged in the vertical state, the compression amount of the pressure spring 35 in the pressure state can be adjusted by adjusting the position of the pressure adjustment sleeve 34, thereby adjusting the detection pressure.

[0087] By adjusting the pitch adjustment sleeve 36 , the length of the telescopic rod 37 extended in a free state can be changed, thereby adjusting the spacing between the detection points.

[0088] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0089] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A quality inspection device for a steel structure unit for engineering, characterized in that: The invention comprises a main body support mechanism (1), a self-pausing sliding displacement mechanism (2), an adjustable equidistant pressure mechanism (3) and a deformation detection alarm mechanism (4), wherein the main body support mechanism (1) comprises a main body bottom plate (5), a gantry support (6) and a workpiece fixing assembly (7), wherein the gantry support (6) is arranged on the main body bottom plate (5), and the workpiece fixing assembly (7) is arranged on the main body bottom plate (5); The self-pausing sliding displacement mechanism (2) comprises a screw drive assembly (10), a one-way sliding assembly (11), a combined nut assembly (12) and an impact unlocking assembly (13), wherein the screw drive assembly (10) is arranged at the bottom of the gantry bracket (6), the one-way sliding assembly (11) is arranged at the bottom of the gantry bracket (6), the combined nut assembly (12) is arranged on the one-way sliding assembly (11), and the impact unlocking assembly (13) is arranged on the one-way sliding assembly (11); The adjustable equidistant pressure mechanism (3) comprises a rotating rolling component (30) and a pitch adjustment component (31), wherein the rotating rolling component (30) is rotatably arranged in the impact unlocking component (13), and the pitch adjustment component (31) is arranged in the rotating rolling component (30); The one-way sliding assembly (11) comprises a sliding guide rail (14), a one-way slider (16) and a one-way slide plate (17); the sliding guide rail (14) is fixedly connected to the gantry bracket (6); the one-way slider (16) is slidably engaged on the sliding guide rail (14); and the one-way slide plate (17) is fixedly connected to the one-way slider (16); The impact unlocking assembly (13) comprises an impact sliding bracket (22), a roller fork bracket (23), an impact plate (24) and an impact energy storage spring (51); the impact sliding bracket (22) is slidably arranged on the one-way slide plate (17); the impact sliding bracket (22) is connected to the one-way slide plate (17) via the impact energy storage spring (51); a bottom lever (29) is arranged below the impact sliding bracket (22); the roller fork bracket (23) is fixedly connected to the one-way slide plate (17); and the impact plate (24) is arranged on the rotating rolling assembly (30); The rotating rolling assembly (30) comprises a pressure roller (32), a rolling wheel (33), a pressure regulating sleeve (34) and a pressure spring (35); the pressure roller (32) is rotatably arranged in the roller fork frame (23); the impact plate (24) is fixedly connected to the pressure roller (32); a central threaded hole (41) is provided at the center of the pressure roller (32); the rolling wheels (33) are symmetrically arranged on both sides of the pressure roller (32); the rolling wheels (33) and the pressure roller (32) are rotatably connected; the pressure regulating sleeve (34) is threadedly connected to the central threaded hole (41); and the pressure spring (35) is arranged at the bottom of the pressure regulating sleeve (34); The pitch adjustment assembly (31) comprises a pitch adjustment sleeve (36), a telescopic rod (37), a torsion leg (38), a torsion main shaft (39) and a pre-positioning torsion spring (40); the pitch adjustment sleeve (36) and the pressure adjustment sleeve (34) are threadedly connected; the telescopic rod (37) is slidably arranged in the pitch adjustment sleeve (36); the torsion main shaft (39) is fixedly connected to the end of the telescopic rod (37); the torsion leg (38) is rotatably arranged on the torsion main shaft (39); and the pre-positioning torsion spring (40) is arranged between the torsion main shaft (39) and the torsion leg (38); The workpiece fixing assembly (7) comprises a structural unit body (8) and a side bracket (9); the structural unit body (8) is detachably mounted on a main body bottom plate (5) via bolts at its bottom; the side bracket (9) is mounted on the main body bottom plate (5); the structural unit body (8) is located between the two side brackets (9); and the rolling wheel (33) is in rolling contact with the upper surface of the side bracket (9).

2. The quality inspection device for a steel structure unit for engineering use according to claim 1 is characterized in that: The combined nut assembly (12) comprises a nut fixing seat (18), a central nut (19), a movable stopper (20) and a stopper return spring (21); the nut fixing seat (18) is fixedly connected to the one-way slide plate (17); side sliding grooves (25) are symmetrically arranged on both sides of the nut fixing seat (18); the central nut (19) is rotatably arranged in the nut fixing seat (18); a nut groove (26) is arranged on the central nut (19); a fixed stopper (27) is arranged on the nut groove (26); the movable stopper (20) is rotatably arranged in the side sliding groove (25); a stopper cantilever end (28) is further arranged on the movable stopper (20); and the stopper cantilever end (28) is connected to the nut fixing seat (18) via a stopper return spring (21).

3. The quality inspection device for a steel structure unit for engineering use according to claim 2 is characterized in that: The deformation detection alarm mechanism (4) comprises a relative stretching component (42) and a position feedback component (43); the relative stretching component (42) is arranged on a gantry-type bracket (6); and the position feedback component (43) is arranged on the gantry-type bracket (6).

4. The quality inspection device for a steel structure unit for engineering use according to claim 3 is characterized in that: The relative tension component (42) comprises a steering block (44), a tension rope (45) and a feedback sleeve (46); the steering block (44) is fixedly connected to the outer surface of the gantry bracket (6); the tension rope (45) and the steering block (44) are in sliding contact; the feedback sleeve (46) is placed on the gantry bracket (6); and a scale slide groove portion (50) is provided above the feedback sleeve (46).

5. The quality inspection device for engineering steel structure units according to claim 4 is characterized in that: The position feedback assembly (43) comprises an adjustment plate (47), a sliding plate (48), a tension rod (49) and a feedback spring (52); the adjustment plate (47) can slide in the feedback sleeve (46) in an adjustable manner; the sliding plate (48) slides freely in the feedback sleeve (46); the feedback spring (52) is arranged between the feedback sleeve (46) and the bottom and the sliding plate (48); the tension rod (49) is fixed to the sliding plate (48); two groups of tension ropes (45) are provided, one group of the tension ropes (45) is arranged between one end of the structural unit body (8) and the feedback sleeve (46); the other group of the feedback sleeve (46) is arranged between the other end of the structural unit body (8) and the tension rod (49).

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