Improved Steel Structure Welding Residual Stress Detection Device

Abstract

The present invention relates to the technical field of detection devices, and in particular to an improved steel structure welding residual stress detection device, comprising a housing, two symmetrically arranged first vertical plates fixedly connected to the middle of the housing, a same bearing plate slidably connected to the middle of the two first vertical plates, a vertically arranged bidirectional rack fixedly connected below the bearing plate, clamping portions respectively connected to both sides of the bidirectional rack in a transmission manner, a damping portion provided below the bidirectional rack, a shell fixedly connected to the top of the housing, two first sliders slidably connected to the top of the shell, the two first sliders being symmetrically arranged, and a moving assembly fixedly connected to the top of the first slider. The present invention can achieve the purpose of achieving a tight fit between a detection probe and steel without gluing.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, in particular to an improved steel structure welding residual stress detection device. Background Art

[0002] The characteristics of steel are high strength, light weight, good overall rigidity and strong resistance to deformation, so it is particularly suitable for building large-span, super-high and super-heavy buildings; the material has good homogeneity and isotropy, and is an ideal elastic body, which best conforms to the basic assumptions of general engineering mechanics; the material has good plasticity and toughness, can have large deformation, and can withstand dynamic loads well; the construction period is short; it has a high degree of industrialization and can be produced in a highly mechanized and specialized manner. The connection between steel structures is usually made by welding. After welding, residual stress will exist in the steel. The existing residual stress detection device requires the detection probe to be fixed to the steel surface by colloid for detection. After the detection is completed, the detection probe is removed by heating, which can easily cause damage to the detection probe and is inconvenient to operate. Therefore, an improved steel structure welding residual stress detection device is urgently needed to solve the problem. Summary of the Invention

[0003] The purpose of the present invention is to provide an improved steel structure welding residual stress detection device to solve the above problems and achieve the purpose of achieving close fit between the detection probe and the steel without gluing.

[0004] To achieve the above-mentioned objectives, the present invention provides the following solution: an improved steel structure welding residual stress detection device, comprising an outer shell, two symmetrically arranged first vertical plates fixedly connected to the middle of the outer shell, the middle parts of the two first vertical plates are slidably connected to the same supporting plate, a vertically arranged bidirectional rack is fixedly connected below the supporting plate, clamping parts are respectively connected to the two sides of the bidirectional rack in a transmission manner, a damping part is provided below the bidirectional rack, a shell is fixedly connected to the top of the outer shell, two first sliders are slidably connected to the top of the shell, the two first sliders are symmetrically arranged, and a moving component is fixedly connected to the top of the first slider.

[0005] Preferably, the clamping portion includes a first rotating shaft, which is rotatably connected to the outer shell, a gear is coaxially fixed to the outer wall of the first rotating shaft, the gear is meshingly connected to the bidirectional rack, a connecting rod is fixed to the side wall of the gear, an electromagnet is fixed to one end of the connecting rod away from the gear, and a clearance hole is opened on the side wall of the first vertical plate, and the clearance hole is arranged corresponding to the position of the electromagnet.

[0006] Preferably, the damping part includes a first box body, the bottom of the first box body is fixedly connected to the bottom of the outer shell, a cavity is formed inside the first box body, a light shaft is slidably connected to the side wall of the cavity, the top of the light shaft is fixedly connected to the bottom of the bidirectional rack, a first channel and a second channel are formed at the bottom of the first box body, pipe joints are fixedly connected to the sides of the second channel and the first channel away from the first box body, the pipe joints are communicated with the second channel and the first channel, a pressing part is communicated with the side of the pipe joint away from the first box body, the inner diameter of the second channel is smaller than that of the first channel, a second one-way valve is arranged in the first channel, and a first one-way valve is arranged in the second channel.

[0007] Preferably, the pressing part includes a second box body, the bottom of the second box body is communicated with the pipe joint through a pipeline, a piston is slidably connected to the inner wall of the second box body, a push rod is fixedly connected to the top of the piston, a fixing rod is fixedly connected to the side wall of the second box body, a pressing rod is rotatably connected to the top of the fixing rod, and the pressing rod is of a "V" - shaped structure.

[0008] Preferably, a limiting plate is fixedly connected to the side wall of the light shaft, a first spring is fixedly connected to the bottom of the limiting plate, the first spring is sleeved on the light shaft, and the bottom of the first spring is in contact with the first box body.

[0009] Preferably, two second vertical plates are fixedly connected to the top of the outer shell, a second rotating shaft is rotatably connected to the side wall of the second vertical plate, a synchronous pulley is coaxially fixedly connected to the second rotating shaft, the output shaft of a power motor is coaxially fixedly connected to the middle of any one of the synchronous pulleys, the two synchronous pulleys are connected by a synchronous belt in transmission, a first slider is arranged in contact with the top of the synchronous belt, a pressing plate is arranged at the bottom of the synchronous belt, a screw is threadedly connected to the bottom of the pressing plate, the screw penetrates through the synchronous belt and the first slider, two symmetrically arranged third vertical plates are fixedly connected to the top of the shell, and two symmetrically arranged first sliding rails are fixedly connected to the opposite side walls of the third vertical plates, and the two first sliding rails are slidably connected to the first slider.

[0010] Preferably, the moving component includes a lifting outer shell, the bottom of the lifting outer shell is fixedly connected to the top of the first slider, first supporting plates and second supporting plates are respectively fixedly connected to the opposite side walls of the lifting outer shell, two second sliding rails are fixedly connected to the opposite side walls of the first supporting plate and the second supporting plate, the two second sliding rails are parallel to each other, the two second sliding rails are jointly slidably connected to the same second slider, a detection probe is fixedly connected to the side wall of the second slider, a lead screw is rotatably connected to the opposite side walls of the first supporting plate and the second supporting plate, the middle of the lead screw is threadedly connected to the middle of the second slider, and the output shaft of a motor is fixedly connected to one end of the lead screw.

[0011] The present invention has the following technical effects: when conducting residual stress detection on steel plates, the welded steel plate is placed between two symmetrically arranged first vertical plates. Under the action of the gravity of the steel plate, the steel plate causes the bearing plate to move downward, and the bearing plate drives the two-way rack to move downward. The two-way rack drives the two clamping parts to approach each other, clamping the steel plate. The damping part prevents the steel plate from moving downward too quickly and colliding with the first vertical plate. At the same time, the steel plate can be quickly moved up after the detection is completed, thereby speeding up the progress of the entire detection process and saving time. The first slider and the moving assembly cooperate with each other to complete the entire detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 This is a partial enlarged schematic diagram of point A of the present invention;

[0015] Figure 3 Schematic diagram of the pressing part structure of the present invention;

[0016] Figure 4 This is a schematic diagram of the structure of the mobile component of the present invention;

[0017] Among them, 1. housing; 2. gear; 3. first rotating shaft; 4. connecting rod; 5. electromagnet; 6. clearance hole; 7. first vertical plate; 8. bearing plate; 9. two-way rack; 10. limit plate; 11. first spring; 12. first housing; 13. cavity; 14. first channel; 15. second channel; 16. first one-way valve; 17. second one-way valve; 18. pipe joint; 19. pipeline; 20. second housing; 21. piston; 22. push rod; 23. Second vertical plate; 24. Synchronous wheel; 25. Second rotating shaft; 26. Shell; 27. Third vertical plate; 28. First slide rail; 29. Gap groove; 30. Pressing plate; 31. First slider; 32. Synchronous belt; 33. Lifting shell; 34. Motor; 35. First support plate; 36. Lead screw; 37. Second slide rail; 38. Second slider; 39. Detection probe; 40. Second support plate; 41. Optical axis; 42. Fixing rod; 43. Pressing rod. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Reference Figures 1-4 The present invention provides an improved steel structure welding residual stress detection device, comprising a housing 1, two symmetrically arranged first vertical plates 7 fixedly connected to the middle of the housing 1, a common support plate 8 slidably connected to the middle of the two first vertical plates 7, a vertically arranged bidirectional rack 9 fixedly connected below the support plate 8, a clamping portion being transmission-connected to each side of the bidirectional rack 9, a damping portion being provided below the bidirectional rack 9, a shell 26 fixedly connected to the top of the housing 1, two first sliders 31 slidably connected to the top of the housing 26, the two first sliders 31 being symmetrically arranged, a moving assembly fixedly connected to the top of the first slider 31. A clearance slot 29 is provided above the housing 26.

[0021] When conducting residual stress detection on steel plates, the welded steel plates are placed between two symmetrically arranged first vertical plates 7. Under the action of the steel plate's gravity, the steel plate causes the load-bearing plate 8 to move downward, and the load-bearing plate 8 drives the bidirectional rack 9 to move downward, and the bidirectional rack 9 drives the two clamping parts to approach each other, clamping the steel plate. The damping part prevents the steel plate from moving down too quickly and colliding with the first vertical plate 7. At the same time, the steel plate can be quickly moved up after the detection is completed, thereby speeding up the progress of the entire detection process and saving time. The first slider 31 and the moving assembly cooperate with each other to complete the entire detection process.

[0022] To further optimize the solution, the clamping portion includes a first rotating shaft 3, which is rotatably connected to the housing 1. A gear 2 is coaxially fixed to the outer wall of the first rotating shaft 3, which meshes with a bidirectional rack 9. A connecting rod 4 is fixed to the side wall of the gear 2, and an electromagnet 5 is fixed to the end of the connecting rod 4 away from the gear 2. A clearance hole 6 is opened on the side wall of the first vertical plate 7, and the clearance hole 6 is arranged in a corresponding position to the electromagnet 5. The downward movement of the bidirectional rack 9 drives the gears 2 on both sides to rotate, and the gear 2 drives the connecting rod 4 to rotate. When the electromagnet 5 contacts the steel plate, it attracts the steel plate to prevent it from shaking during testing.

[0023] For a further optimized solution, the damping part includes a first box body 12. The bottom of the first box body 12 is fixedly connected to the bottom of the outer shell 1. A cavity 13 is formed inside the first box body 12. A light shaft 41 is slidably connected to the side wall of the cavity 13. The top of the light shaft 41 is fixedly connected to the bottom of the bidirectional rack 9. A first channel 14 and a second channel 15 are formed at the bottom of the first box body 12. Pipe connectors 18 are fixedly connected to the sides of the second channel 15 and the first channel 14 away from the first box body 12. The pipe connectors 18 communicate with the second channel 15 and the first channel 14. A pressing part is communicated with the side of the pipe connector 18 away from the first box body 12. The inner diameter of the second channel 15 is smaller than that of the first channel 14. A second one-way valve 17 is arranged in the first channel 14, and a first one-way valve 16 is arranged in the second channel 15. The cavity 13 is filled with liquid. When the light shaft 41 moves downward, the liquid is squeezed, and the liquid flows out through the second channel 15. The inner diameter of the second channel 15 is smaller than that of the cavity 13, and the flow rate of the liquid at the second channel 15 is restricted by the inner diameter of the second channel 15. Therefore, the liquid in the cavity 13 does not flow out quickly, achieving the purpose of reducing the downward movement speed of the steel plate.

[0024] For a further optimized solution, the pressing part includes a second box body 20. The bottom of the second box body 20 is communicated with the pipe connector 18 through a pipeline 19. A piston 21 is slidably connected to the inner wall of the second box body 20. A push rod 22 is fixedly connected to the top of the piston 21. A fixed rod 42 is fixedly connected to the side wall of the second box body 20. A pressing rod 43 is rotatably connected to the top of the fixed rod 42. The pressing rod 43 is of a "V" - shaped structure. After the detection is completed, press the pressing rod 43 downward by hand. The bottom of the pressing rod 43 moves the push rod 22 downward, and the push rod 22 drives the piston 21 to move downward. The diameter of the piston 21 is larger than that of the light shaft 41. By applying a small force to the pressing rod 43, the steel plate can be jacked above the first vertical plate 7. At this time, the liquid flows from the first channel 14 into the cavity 13.

[0025] For a further optimized solution, a limiting plate 10 is fixedly connected to the side wall of the light shaft 41. A first spring 11 is fixedly connected to the bottom of the limiting plate 10. The first spring 11 is sleeved on the light shaft 41, and the bottom of the first spring 11 is in contact with the first box body 12. The first spring 11 plays a buffering role in the process of the light shaft 41 descending, and at the same time, the first spring 11 plays a role in assisting the steel plate to rebound upward after the detection is completed.

[0026] For a further optimized solution, two second vertical plates 23 are fixedly connected to the top of the outer shell 1. The side wall of the second vertical plate 23 is rotatably connected to a second rotating shaft 25. A synchronous pulley 24 is coaxially fixedly connected to the second rotating shaft 25. The output shaft of a power motor (not shown in the figure) is coaxially fixedly connected to the middle of any one of the synchronous pulleys 24. The two synchronous pulleys 24 are drivingly connected by a synchronous belt 32. A first slider 31 is in contact with the top of the synchronous belt 32. A pressing plate 30 is provided at the bottom of the synchronous belt 32. Screws are threadedly connected to the bottom of the pressing plate 30. The screws penetrate through the synchronous belt 32 and the first slider 31. Symmetrically arranged third vertical plates 27 are fixedly connected to the top of the housing 26. Two symmetrically arranged first sliding rails 28 are fixedly connected to the opposite side walls of the third vertical plates 27. The two first sliding rails 28 are slidably connected to the first slider 31. The power motor drives one of the synchronous pulleys 24 to rotate. One of the synchronous pulleys 24 drives the other synchronous pulley 24 to rotate through the synchronous belt 32. The synchronous belt 32 drives the upper first slider 31 to perform a linear motion. The first slider 31 drives the upper moving assembly to perform a linear motion.

[0027] For a further optimized solution, the moving assembly includes a lifting outer shell 33. The bottom of the lifting outer shell 33 is fixedly connected to the top of the first slider 31. Opposite side walls of the lifting outer shell 33 are respectively fixedly connected to a first support plate 35 and a second support plate 40. Two second sliding rails 37 are fixedly connected to the opposite side walls of the first support plate 35 and the second support plate 40. The two second sliding rails 37 are parallel to each other. The same second slider 38 is slidably connected to the two second sliding rails 37. A detection probe 39 is fixedly connected to the side wall of the second slider 38. The same lead screw 36 is rotatably connected to the opposite side walls of the first support plate 35 and the second support plate 40. The middle of the lead screw 36 is threadedly connected to the middle of the second slider 38. One end of the lead screw 36 is fixedly connected to the output shaft of the motor 34. The rotation of the motor 34 drives the lead screw 36 to rotate. The lead screw 36 converts the rotation into a linear motion through the threaded fit with the second slider 38, so that the second slider 38 drives the detection probe 39 to align with the position to be detected.

[0028] The working process of the present invention is as follows: When performing detection, the welded steel plate is placed between two symmetrically arranged first vertical plates 7. Under the action of the gravity of the steel plate, the steel plate moves the bearing plate 8 downward. The bearing plate 8 drives the bidirectional rack 9 downward. The bidirectional rack 9 drives the two side gears 2 to rotate. The gears 2 drive the connecting rods 4 to rotate. When the electromagnet 5 contacts the steel plate, the steel plate is attracted and held to prevent the steel plate from shaking during detection. Control the rotation of the motor 34 to align the detection probe 39 with the position to be detected. Control the rotation of the power motor to make the two detection probes 39 approach each other and closely adhere to the position to be detected, completing the detection of the residual stress. After the detection is completed, press the pressure bar 43 by hand. The pressure bar 43 moves the push rod 22 downward. The push rod 22 drives the piston 21 downward. The diameter of the piston 21 is larger than the diameter of the optical axis 41. By applying a relatively small force to the pressure bar 43, the steel plate can be lifted above the first vertical plate 7.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0030] The embodiments described above are only for describing the preferred mode of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. Improved steel structure welding residual stress detection device, characterized in that: The invention comprises a shell (1), wherein two symmetrically arranged first vertical plates (7) are fixedly connected to the middle of the shell (1), and the middle of the two first vertical plates (7) are slidably connected to the same supporting plate (8), and a vertically arranged bidirectional rack (9) is fixedly connected below the supporting plate (8), and clamping parts are respectively connected to the two sides of the bidirectional rack (9), and a damping part is provided below the bidirectional rack (9), and a shell (26) is fixedly connected to the top of the shell (1), and two first sliders (31) are slidably connected to the top of the shell (26), and the two first sliders (31) are symmetrically arranged, and a moving component is fixedly connected to the top of the first slider (31); The clamping portion includes a first rotating shaft (3), the first rotating shaft (3) is rotatably connected to the housing (1), a gear (2) is coaxially fixed to the outer wall of the first rotating shaft (3), the gear (2) is meshingly connected to the bidirectional rack (9), a connecting rod (4) is fixed to the side wall of the gear (2), an electromagnet (5) is fixed to one end of the connecting rod (4) away from the gear (2), a clearance hole (6) is provided on the side wall of the first vertical plate (7), and the clearance hole (6) is arranged corresponding to the position of the electromagnet (5); The top of the housing (1) is fixed with two second vertical plates (23), the side walls of the second vertical plates (23) are rotatably connected with a second rotating shaft (25), the second rotating shaft (25) is coaxially fixed with a synchronous wheel (24), the middle of any of the synchronous wheels (24) is coaxially fixed with an output shaft of a power motor, the two synchronous wheels (24) are connected by a synchronous belt (32), the top of the synchronous belt (32) is provided with a first slider (31), the bottom of the synchronous belt (32) is provided with a pressure plate (30), the bottom of the pressure plate (30) is threadedly connected with a screw, the screw passes through the synchronous belt (32) and the first slider (31), the top of the housing (26) is fixed with a symmetrically arranged third vertical plate (27), the opposite side walls of the third vertical plate (27) are fixed with two symmetrically arranged first slide rails (28), the two first slide rails (28) are slidably connected to the first slider (31); The moving assembly includes a lifting shell (33), the bottom of the lifting shell (33) is fixedly connected to the top of the first slider (31), the opposite side walls of the lifting shell (33) are respectively fixedly connected to a first support plate (35) and a second support plate (40), the opposite side walls of the first support plate (35) and the second support plate (40) are fixedly connected to two second slide rails (37), the two second slide rails (37) are parallel to each other, and the two second slide rails (37) are slidably connected to the same second slider (38), the side wall of the second slider (38) is fixedly connected to a detection probe (39), the opposite side walls of the first support plate (35) and the second support plate (40) are rotatably connected to the same lead screw (36), the middle part of the lead screw (36) is threadedly connected to the middle part of the second slider (38), and one end of the lead screw (36) is fixedly connected to the output shaft of the motor (34).

2. The improved steel structure welding residual stress detection device according to claim 1, wherein: The damping part includes a first box body (12), the bottom of the first box body (12) is fixedly connected to the bottom of the outer shell (1), a cavity (13) is formed inside the first box body (12), a optical axis (41) is slidably connected to the side wall of the cavity (13), the top of the optical axis (41) is fixedly connected to the bottom of the bidirectional rack (9), a first channel (14) and a second channel (15) are formed at the bottom of the first box body (12), a pipe joint (18) is fixedly connected to the sides of the second channel (15) and the first channel (14) away from the first box body (12), the pipe joint (18) is communicated with the second channel (15) and the first channel (14), a pressing part is communicated with the side of the pipe joint (18) away from the first box body (12), the inner diameter of the second channel (15) is smaller than that of the first channel (14), a second one-way valve (17) is arranged in the first channel (14), and a first one-way valve (16) is arranged in the second channel (15).

3. The improved steel structure welding residual stress detection device according to claim 2, characterized in that: The pressing part includes a second box body (20), the bottom of the second box body (20) is communicated with the pipe joint (18) through a pipeline (19), a piston (21) is slidably connected to the inner wall of the second box body (20), a push rod (22) is fixedly connected to the top of the piston (21), a fixed rod (42) is fixedly connected to the side wall of the second box body (20), a pressing rod (43) is rotatably connected to the top of the fixed rod (42), and the pressing rod (43) is of a "V" - shaped structure.

4. The improved steel structure welding residual stress detection device according to claim 2, characterized in that: A limiting plate (10) is fixedly connected to the side wall of the optical axis (41), a first spring (11) is fixedly connected to the bottom of the limiting plate (10), the first spring (11) is sleeved on the optical axis (41), and the bottom of the first spring (11) is in contact with the first box body (12).

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