A device and method for detecting welding points in steel structure construction

Abstract

The present invention relates to the field of steel structure welding detection, specifically a steel structure construction welding point detection device and method, including a mobile guide device, the top of the mobile guide device is connected to a top frame, the left and right sides of the top frame are equipped with a pushing device, and a detection device is arranged between the top frame and the pushing device. The present invention detects the I-shaped steel column through the mutual cooperation of the pushing device and the detection device, firstly, the rear probe mechanism performs ultrasonic detection on the weld of the I-shaped steel column in the initial state, and then the driving mechanism selectively drives the lateral pushing mechanism and the longitudinal pushing mechanism to push and press the I-shaped steel column at multiple points and in multiple directions, and then the front probe mechanism performs ultrasonic detection on the weld of the I-shaped steel column after pushing, thereby improving the accuracy of the I-shaped steel column weld detection and avoiding the situation that the welding of the I-shaped steel column is not firm.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure welding detection, and in particular to a steel structure construction welding point detection device and method. Background Art

[0002] Steel structure is a building structure that uses steel as the main load-bearing component. It is widely used in various buildings and projects. It is mainly composed of steel columns, steel beams, connectors and other components. Among them, the steel column is the core of the entire steel structure building and is used to support the vertical load of the building. The steel column is usually welded with medium-thick steel plates. The shape of the steel column mainly includes solid steel column and lattice steel column. The solid steel column has an integral cross-section, and the most commonly used is the I-shaped cross-section.

[0003] An I-shaped steel column is generally welded from a top plate, a vertical plate and a bottom plate arranged in an I-shape. In order to ensure that the welding between the top plate, the vertical plate and the bottom plate is strong enough, it is usually necessary to inspect the welds of the I-shaped steel column. The existing inspection method is to use an ultrasonic inspection probe to move along the weld to inspect the weld to detect whether there are defects such as cracks in the weld. However, the above inspection method still has the following shortcomings: 1. The above inspection method only judges the welding firmness based on the welding quality of the weld itself. This evaluation method is single and limited, and it is impossible to inspect the weld again after the weld is subjected to external force. Therefore, the accuracy of the inspection result is low; 2. The existing inspection method is to manually hold the inspection probe and aim it at the weld for inspection. In the process of moving the inspection probe, due to human factors such as changes in hand-held stability, it is easier for the distance between the inspection probe and the weld to change. When the probe is too far away, the problem of fuzzy sound wave feedback will occur, which will affect the accuracy of the inspection. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a steel structure construction welding point detection device, including a mobile guide device, the top of the mobile guide device is connected to a top frame, pushing devices are installed on the left and right sides of the top frame, and a detection device is arranged between the top frame and the pushing device.

[0005] The movable guiding device includes a bottom frame with a U-shaped structure, and upper clamps are fixedly connected to the tops of the left and right ends of the bottom frame. A longitudinal limiting mechanism is installed in the middle of the bottom frame to cooperate with the upper clamp for upper and lower clamping. The bottom frame is also equipped with a transverse limiting mechanism that is symmetrically distributed with respect to the longitudinal limiting mechanism and performs left and right clamping. The transverse limiting mechanism and the longitudinal limiting mechanism cooperate to guide and limit the I-shaped steel column, and an anti-rotation mechanism is installed at the bottom of the bottom frame to limit the longitudinal limiting mechanism.

[0006] The pushing device includes a movable frame fixedly mounted on the vertical inner wall of the top frame, a lateral pushing mechanism is mounted on one side of the movable frame close to the center of the top frame for sliding left and right, a longitudinal pushing mechanism is mounted on the top of the movable frame for sliding up and down, and a driving mechanism for driving the movement of the lateral pushing mechanism and the longitudinal pushing mechanism is mounted inside the movable frame.

[0007] The detection device comprises a detector body fixedly mounted on a vertical section of a top frame, and probe mechanisms are symmetrically mounted on the upper ends of the movable frames on one side close to each other.

[0008] In one possible implementation, the longitudinal limiting mechanism includes a threaded sleeve rotatably installed in the middle of the bottom frame, the internal thread of the threaded sleeve is connected to a threaded rod, the top of the threaded rod is rotatably connected to a lower clamping plate located above the horizontal section of the bottom frame, the opposite surfaces of the lower clamping plate and the upper clamping plate are rotatably installed with ball bearings, the bottom of the lower clamping plate is fixedly connected to a guide rod symmetrically distributed about the threaded rod, the guide rod is slidably installed up and down on the horizontal section of the bottom frame, and the bottom end of the threaded sleeve extends to the bottom of the bottom frame and is fixedly connected to a rotating sleeve.

[0009] In one possible implementation, the lateral limiting mechanism includes a roller frame slidably mounted on the horizontal section of the bottom frame, the two roller frames are symmetrically distributed about the bottom frame, and a plurality of pressure rollers equidistantly distributed front and back are rotatably mounted on opposite sides of the roller frame. The bottom of the roller frame is fixedly connected to a rack located at the bottom of the bottom frame and slidably connected to the bottom frame, and the bottom of the bottom frame is fixedly connected to a guide rail at a position corresponding to the rack, the rack is slidably mounted inside the corresponding guide rail, and a gear is fixedly connected to the outside of the rotating sleeve, the rack is meshed with the gear, and the two racks are respectively distributed on the front and rear sides of the gear.

[0010] In one possible implementation, the anti-rotation mechanism includes an L-shaped guide frame fixedly mounted on the bottom of the bottom frame, a limit rod is installed on the inside of the vertical section of the L-shaped guide frame for sliding left and right, a baffle is fixedly connected to the outside of the limit rod, the top of the baffle is installed on the horizontal section of the L-shaped guide frame for sliding left and right, a return spring is fixedly connected between the baffle and the vertical section of the L-shaped guide frame, one end of the limit rod close to the rotating sleeve is configured as a wedge-shaped structure, and the end away from the rotating sleeve is fixedly connected to a pull ring, and a plurality of limit holes matching the wedge-shaped structure are evenly distributed circumferentially on the outer wall of the rotating sleeve.

[0011] In one possible implementation, the lateral pushing mechanism includes a lateral push rod slidably installed on the movable frame body near the center of the top frame, a first plug rod is fixedly connected to the rear side of the lateral push rod away from the center of the top frame, a slide groove frame is fixedly connected to the end of the lateral push rod near the center of the top frame, a magnetic pressure block is slidably installed on the side of the slide groove frame near the center of the top frame, the slide groove frame on the left side is vertically arranged, and the slide groove frame on the right side is horizontally arranged.

[0012] In one possible implementation, the longitudinal pushing mechanism includes a longitudinal push rod installed on the top of the movable frame for sliding up and down, a second plug rod is fixedly connected to the front side of the bottom end of the longitudinal push rod, and a C-shaped frame is fixedly connected to the top of the longitudinal push rod. A movable block is installed on the side of the top of the upper horizontal section of the C-shaped frame close to the center of the top frame for sliding left and right, and pushing blocks are fixedly installed on the opposite sides of the movable block and the lower horizontal section of the C-shaped frame. A fixed component for limiting the sliding of the movable block is also installed at the front end of the C-shaped frame.

[0013] In one possible implementation, the fixing assembly includes a movable rod rotatably mounted in the upper horizontal section of the C-shaped frame, a hook is provided at one end of the movable rod close to the movable block, and an end of the movable rod away from the movable block passes through the front end of the C-shaped frame and is fixedly connected to a button, a return spring 2 is fixedly connected between the end of the button away from the movable block and the inner wall of the C-shaped frame, and a plurality of equally spaced fixing grooves are provided on one side of the movable block close to the movable rod, and the fixing grooves cooperate with the hook.

[0014] In one possible implementation, the driving mechanism includes a hydraulic telescopic rod fixedly mounted on the vertical section of the top frame, the end of the hydraulic telescopic rod close to the center of the top frame is fixedly connected to an adjusting track, a lead screw is rotatably mounted inside the adjusting track, a wedge block is threadedly connected to the outside of the lead screw, the wedge block is slidably mounted in the middle of the adjusting track, a hand wheel is fixedly connected to the front end of the lead screw, an inclined groove is provided on the wedge block, an end of the inclined groove close to the center of the top frame is inclined downward, the second plug rod is slidably mounted inside the inclined groove, a socket is also provided inside the wedge block, the socket is located below one end of the inclined groove close to the center of the top frame, and the first plug rod is plugged into and fitted with the socket.

[0015] In one possible implementation, the probe mechanism includes an electric telescopic rod fixedly connected to the outer wall of a movable frame near the center of the top frame, one end of the electric telescopic rod near the center of the top frame is fixedly connected to an ultrasonic probe, the ultrasonic probe is electrically connected to the detector body, and the upper and lower sides of the fixed section of the electric telescopic rod are connected to elastic telescopic rods, and a roller is rotatably installed on one end of the elastic telescopic rod away from the electric telescopic rod.

[0016] The present invention also provides a method for detecting welding points in steel structure construction, comprising the following steps: S1, installing a detection device on an I-shaped steel column, driving the longitudinal limit mechanism to move upward and cooperate with the upper clamping plate to clamp the bottom plate up and down, and at the same time, the longitudinal limit mechanism drives the transverse limit mechanism to move to clamp the left and right sides of the bottom plate.

[0017] S2. Adjust the position of the probe mechanism so that the two probe mechanisms on the movable frame are respectively aligned with the weld.

[0018] S3. Connect the driving mechanism to the transverse pushing mechanism for pushing detection. Adjust the driving mechanism to the front end position so that the driving mechanism is only connected to the transverse pushing mechanism and not to the longitudinal pushing mechanism. Turn on the detector body, use the probe mechanism at the rear to detect the initial state of the weld, and then push the movable guide device backward along the I-shaped steel column for a distance. The driving mechanism pushes the transverse pushing mechanism to push the I-shaped steel column.

[0019] S4. Connect the driving mechanism to the transverse pushing mechanism and the longitudinal pushing mechanism at the same time to perform pushing detection. Adjust the driving mechanism to the middle position so that the driving mechanism is connected to the transverse pushing mechanism and the longitudinal pushing mechanism at the same time. At this time, the driving mechanism simultaneously pushes the transverse pushing mechanism and the longitudinal pushing mechanism to move and push the I-shaped steel column.

[0020] S5. Connect the driving mechanism to the longitudinal pushing mechanism separately for pushing detection, adjust the driving mechanism to the rear position so that the driving mechanism is only connected to the longitudinal pushing mechanism, and then the driving mechanism pushes the longitudinal pushing mechanism to move and push the I-shaped steel column.

[0021] S6. The driving mechanism on the left is separately connected to the corresponding longitudinal pushing mechanism, and the driving mechanism on the right is separately connected to the corresponding transverse pushing mechanism. The driving mechanism on the left drives the longitudinal pushing mechanism to move downward to push the left end of the top plate downward. At the same time, the driving mechanism on the right drives the transverse pushing mechanism to move to the left, pushing the vertical plate to the left, so that both sides of the weld are squeezed inward.

[0022] S7. During the above-mentioned pushing and squeezing detection process, the weld is tested once each time the front probe mechanism is used to determine whether the weld cracks under the pressure.

[0023] S8. After the inspection of the weld between the top plate and the vertical plate is completed, the inspection device leaves the I-shaped steel column, and then turns the I-shaped steel column over so that its bottom plate faces upward, and then completes the inspection of the weld between the vertical plate and the bottom plate according to the above steps S1-S7.

[0024] The beneficial effects of the present invention are as follows: 1. The present invention detects the I-shaped steel column through the mutual cooperation of the pushing device and the detection device. First, the rear probe mechanism performs ultrasonic detection on the weld of the I-shaped steel column in an initial state, and then the driving mechanism selectively drives the horizontal pushing mechanism and the longitudinal pushing mechanism to push and press the I-shaped steel column at multiple points and in multiple directions. Then, the front probe mechanism performs ultrasonic detection on the weld of the I-shaped steel column after pushing, thereby improving the accuracy of the detection of the weld of the I-shaped steel column and avoiding the situation where the welding of the I-shaped steel column is not firm.

[0025] 2. The present invention can selectively connect the wedge block with the transverse pushing mechanism and the longitudinal pushing mechanism by adjusting the position of the wedge block. When the wedge block is in the middle position, the wedge block is connected with the transverse pushing mechanism and the longitudinal pushing mechanism at the same time, and the driving mechanism can simultaneously push the transverse pushing mechanism and the longitudinal pushing mechanism to move the opposing plate and the top plate / bottom plate to push. When the wedge block is in the front, the wedge block is only connected with the transverse pushing mechanism, and the driving mechanism will only push the transverse pushing mechanism to push the opposing plate. Through the cooperation of the transverse pushing mechanisms on both sides, multi-point staggered pushing of the opposing plates is achieved. When the wedge block is in the rear, the wedge block is only connected with the longitudinal pushing mechanism, and the driving mechanism will only push the longitudinal pushing mechanism to push the two ends of the top plate / bottom plate at multiple points. By pushing the opposing plates and the top plate / bottom plate at multiple points and in multiple directions, different stress conditions during the use of the I-shaped steel column are simulated, the welding quality of the weld under the action of external force is tested, and the accuracy of weld detection is improved.

[0026] 3. The present invention drives the threaded sleeve to rotate by rotating the rotating sleeve, so that the threaded rod can push the lower clamping plate to move upward, so that the upper clamping plate and the lower clamping plate cooperate to clamp the bottom plate / top plate of the I-shaped steel column up and down, and at the same time, the rotating sleeve drives the gear to rotate, and then the gear drives the two racks to move toward each other, and then pulls the two roller frames closer to each other, so that the clamping roller can clamp the bottom plate / top plate of the I-shaped steel column left and right. During the rotation of the rotating sleeve, the anti-rotation mechanism can limit the rotating sleeve to prevent the rotating sleeve from rotating in the opposite direction. By fixing the movable guide device on the bottom plate / top plate of the I-shaped steel column, the bottom plate / top plate of the I-shaped steel column is used to guide and limit the movement of the device, thereby improving the relative stability of the device along the movement of the I-shaped steel column, and improving the accuracy of the probe mechanism in detecting the weld of the I-shaped steel column. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0028] Figure 2 It is a structural schematic diagram of the front side of the present invention.

[0029] Figure 3It is a schematic diagram of the three-dimensional structure of the mobile guiding device of the present invention.

[0030] Figure 4 It is a front sectional view of the movable guide device of the present invention.

[0031] Figure 5 It is a three-dimensional structural schematic diagram of the anti-rotation mechanism of the present invention.

[0032] Figure 6 It is a three-dimensional structural schematic diagram of the pushing device of the present invention.

[0033] Figure 7 It is a schematic diagram of the planar structure of the fixing assembly of the present invention.

[0034] Figure 8 It is a three-dimensional structural schematic diagram of the driving mechanism of the present invention.

[0035] Fig. 9 It is a three-dimensional structural schematic diagram of the probe mechanism of the present invention.

[0036] In the figure: 1. movable guide device; 11. bottom frame; 12. upper clamping plate; 13. transverse limiting mechanism; 131. roller frame; 132. pressing roller; 133. rack; 134. guide rail; 135. gear; 14. longitudinal limiting mechanism; 141. threaded sleeve; 142. threaded rod; 143. lower clamping plate; 144. guide rod; 145. rotating sleeve; 15. anti-rotation mechanism; 151. L-shaped guide frame; 152. limiting rod; 153. baffle; 154. reset spring 1; 155. pull ring; 156. limiting hole; 2. top frame; 3. pushing device; 31. movable frame; 32. transverse pushing mechanism; 321. transverse push rod; 322. first plug rod; 323. slide frame ; 324, magnetic pressure block; 33, longitudinal pushing mechanism; 331, longitudinal push rod; 332, second plug rod; 333, U-shaped frame; 334, movable block; 335, pushing block; 336, fixed component; 3361, movable rod; 3362, button; 3363, reset spring 2; 3364, fixed groove; 34, driving mechanism; 341, hydraulic telescopic rod; 342, adjustment track; 343, lead screw; 344, wedge block; 345, hand wheel; 346, inclined groove; 347, socket; 4, detection device; 41, detector body; 42, probe mechanism; 421, electric telescopic rod; 422, ultrasonic probe; 423, elastic telescopic rod; 424, roller; 5, I-shaped steel column. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0038] See also Figure 1 and 2 A welding point detection device for steel structure construction includes a movable guide device 1, a top frame 2 is connected to the top of the movable guide device 1, a pushing device 3 is installed on the left and right sides of the top frame 2, and a detection device 4 is arranged between the top frame 2 and the pushing device 3.

[0039] See also Figure 1 , Figure 2 and Figure 3 The mobile guiding device 1 includes a bottom frame 11 with a U-shaped structure, the bottoms of the left and right ends of the top frame 2 are fixedly connected to the tops of the left and right ends of the bottom frame 11, and the tops of the left and right ends of the bottom frame 11 are fixedly connected with upper clamping plates 12. A longitudinal limiting mechanism 14 is installed in the middle of the bottom frame 11 to cooperate with the upper clamping plate 12 for clamping up and down. The bottom frame 11 is also equipped with a transverse limiting mechanism 13 that is symmetrically distributed with respect to the longitudinal limiting mechanism 14 and clamps left and right. The transverse limiting mechanism 13 and the longitudinal limiting mechanism 14 are linked to cooperate to guide and limit the I-shaped steel column 5. An anti-rotation mechanism 15 is installed at the bottom of the bottom frame 11 to limit the longitudinal limiting mechanism 14.

[0040] See also Figure 1 and Figure 2 The pushing device 3 includes a movable frame 31 fixedly mounted on the vertical inner wall of the top frame 2, a lateral pushing mechanism 32 is slidably mounted on one side of the movable frame 31 close to the center of the top frame 2, a longitudinal pushing mechanism 33 is slidably mounted on the top of the movable frame 31, and a driving mechanism 34 for driving the lateral pushing mechanism 32 and the longitudinal pushing mechanism 33 to move is installed inside the movable frame 31.

[0041] See also Figure 1 and Figure 2 The detection device 4 includes a detector body 41 fixedly mounted on the vertical section of the top frame 2. The detector body 41 is an existing ultrasonic detector. The upper ends of the movable frames 31 on one side close to each other are symmetrically mounted with probe mechanisms 42.

[0042] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The longitudinal limiting mechanism 14 includes a threaded sleeve 141 rotatably mounted in the middle of the bottom frame 11, the internal thread of the threaded sleeve 141 is connected with a threaded rod 142, the top of the threaded rod 142 is rotatably connected with a lower clamping plate 143 located above the horizontal section of the bottom frame 11, the opposite surfaces of the lower clamping plate 143 and the upper clamping plate 12 are rotatably mounted with ball bearings, the bottom of the lower clamping plate 143 is fixedly connected with a guide rod 144 symmetrically distributed about the threaded rod 142, the guide rod 144 is slidably mounted up and down on the horizontal section of the bottom frame 11, and the bottom end of the threaded sleeve 141 extends to the bottom of the bottom frame 11 and is fixedly connected with a rotating sleeve 145.

[0043] See also Figure 1 , Figure 2 , Figure 3 and Figure 5 The lateral limiting mechanism 13 includes a roller frame 131 slidably installed on the horizontal section of the bottom frame 11, the two roller frames 131 are symmetrically distributed about the bottom frame 11, and the opposite sides of the roller frames 131 are rotatably installed with a plurality of clamping rollers 132 equidistantly distributed front and back. The bottom of the roller frame 131 is fixedly connected with a rack 133 located at the bottom of the bottom frame 11 and slidably connected to the bottom of the bottom frame 11, and the position of the bottom of the bottom frame 11 corresponding to the rack 133 is fixedly connected with a guide rail 134, the rack 133 is slidably installed inside the corresponding guide rail 134, and the outside of the rotating sleeve 145 is fixedly connected with a gear 135, the rack 133 is meshed with the gear 135, and the two racks 133 are respectively distributed on the front and rear sides of the gear 135.

[0044] The existing fixing equipment is used to fix and limit the I-shaped steel column 5, and the bottom plate of the I-shaped steel column 5 is passed through the upper clamping plate 12 and the lower clamping plate 143, and then the threaded sleeve 141 is rotated to make the threaded rod 142 push the lower clamping plate 143 to move upward, and the upper clamping plate 12 and the lower clamping plate 143 are used to clamp the bottom plate up and down; at the same time, the threaded sleeve 141 drives the rotating sleeve 145 to rotate, and the rotating sleeve 145 drives the gear 135 to rotate, and the gear 135 drives the rack 133 to pull the roller frames 131 on the left and right sides to approach each other, and the pressure rollers 132 are used to clamp the left and right sides of the bottom plate, and when the upper clamping plate 12 and the lower clamping plate 143 are in contact and clamped with the bottom plate, the left and right pressure rollers 132 are in contact and clamped with the left and right sides of the bottom plate, thereby improving the limiting effect of the I-shaped steel column 5, making the movable guide device 1 move more stably along the I-shaped steel column 5, and improving the detection effect. It should be noted that when the detection device is located at the end of one side of the I-shaped steel column 5, the existing fixing equipment fixes and limits the other end and the middle part of the I-shaped steel column 5. After the detection device completes the weld detection at the end of one side of the I-shaped steel column 5 and then moves a certain distance along the I-shaped steel column 5, the existing fixing equipment fixes and limits the two ends of the I-shaped steel column 5, that is, the existing fixing equipment switches between fixing the single-side end and the middle part of the I-shaped steel column 5 and fixing the double-side ends of the I-shaped steel column 5, so as to ensure that the detection device can completely detect the weld extending along the length direction of the I-shaped steel column 5.

[0045] See also Figure 1 , Figure 3 , Figure 4 and Figure 5 The anti-rotation mechanism 15 includes an L-shaped guide frame 151 fixedly installed at the bottom of the bottom frame 11, a limit rod 152 is installed inside the vertical section of the L-shaped guide frame 151 for sliding left and right, a blocking piece 153 is fixedly connected to the outside of the limit rod 152, and the top of the blocking piece 153 is installed on the horizontal section of the L-shaped guide frame 151 for sliding left and right. A return spring 154 is fixedly connected between the blocking piece 153 and the vertical section of the L-shaped guide frame 151, one end of the limit rod 152 close to the rotating sleeve 145 is set to a wedge structure, and the other end away from the rotating sleeve 145 is fixedly connected to a pull ring 155, and a plurality of limit holes 156 matching the wedge structure are evenly distributed circumferentially on the outer wall of the rotating sleeve 145.

[0046] When the rotating sleeve 145 rotates counterclockwise, the limiting hole 156 can push the inclined surface of the wedge-shaped structure to move the limiting rod 152 to the right, so that the anti-rotation mechanism 15 will not hinder the rotation of the rotating sleeve 145. When the rotating sleeve 145 stops rotating, the rebound force of the reset spring 154 is used to push the blocking piece 153 and the limiting rod 152 to move to the left, so that the limiting rod 152 is stuck in the corresponding limiting hole 156, thereby limiting the clockwise rotation of the rotating sleeve 145 and preventing the transverse limiting mechanism 13 and the longitudinal limiting mechanism 14 from being loosened. By pulling the pull ring 155 to the right, the limiting rod 152 can be separated from the limiting hole 156, thereby releasing the lock of the rotating sleeve 145, so that the rotating sleeve 145 can rotate clockwise to release the fixation of the transverse limiting mechanism 13 and the longitudinal limiting mechanism 14.

[0047] See also Figure 1 , Figure 2 and Figure 6 The lateral pushing mechanism 32 includes a lateral push rod 321 slidably installed on the movable frame 31 on one side near the center of the top frame 2, the lateral push rod 321 is fixedly connected to the first plug rod 322 on the rear side away from the center of the top frame 2, the lateral push rod 321 is fixedly connected to the end of the lateral push rod 321 near the center of the top frame 2 with a slide groove frame 323, the slide groove frame 323 is slidably installed on the side near the center of the top frame 2 with a magnetic pressing block 324, the magnetic pressing block 324 is fixed to the inside of the slide groove frame 323 by magnetic attraction, the slide groove frame 323 on the left side is vertically arranged, and the slide groove frame 323 on the right side is horizontally arranged, and the left and right lateral pushing mechanisms 32 are staggered up and down.

[0048] By pushing the horizontal push rod 321 to move left and right through the driving mechanism 34, the magnetic pressure block 324 can push and press the vertical plate in the I-shaped steel column 5. The magnetic pressure block 324 can move up and down in the corresponding slide frame 323 to adjust the top, middle and bottom positions, thereby adjusting the relative position between the left and right magnetic pressure blocks 324, making it convenient to push and pressurize different points on the vertical plate.

[0049] See also Figure 1 , Figure 2 and Figure 6 The longitudinal pushing mechanism 33 includes a longitudinal push rod 331 installed on the top of the movable frame 31 for sliding up and down, a second plug rod 332 is fixedly connected to the front side of the bottom end of the longitudinal push rod 331, a C-shaped frame 333 is fixedly connected to the top of the longitudinal push rod 331, a movable block 334 is installed on the side of the upper horizontal section of the C-shaped frame 333 close to the center of the top frame 2 for sliding left and right, and pushing blocks 335 are fixedly installed on the opposite sides of the movable block 334 and the lower horizontal section of the C-shaped frame 333, and a fixing component 336 for limiting the sliding of the movable block 334 is also installed at the front end of the C-shaped frame 333.

[0050] The two ends of the top plate of the I-shaped steel column 5 are respectively located between the corresponding movable blocks 334 and the lower horizontal section of the U-shaped frame 333. When the driving mechanism 34 pushes the longitudinal push rod 331 to move upward, the pushing block 335 below the top plate can push the top plate upward. When the driving mechanism 34 drives the longitudinal push rod 331 to move downward, the pushing block 335 above the top plate can push the top plate downward. By sliding the movable block 334 left and right, the positions of the left and right pushing blocks 335 located above the top plate can be adjusted, which is convenient for pushing and pressing at different positions.

[0051] See also Figure 1 , Figure 2 , Figure 6 and Figure 7 The fixing assembly 336 includes a movable rod 3361 rotatably mounted in the upper horizontal section of the C-shaped frame 333, a hook is provided at one end of the movable rod 3361 close to the movable block 334, and a button 3362 is fixedly connected to the end of the movable rod 3361 away from the movable block 334 after passing through the front end of the C-shaped frame 333, and a return spring 2 3363 is fixedly connected between the end of the button 3362 away from the movable block 334 and the inner wall of the C-shaped frame 333, and a plurality of equally distributed fixing grooves 3364 are provided on one side of the movable block 334 close to the movable rod 3361, and the fixing grooves 3364 cooperate with the hook.

[0052] By pushing the end of the movable rod 3361 close to the button 3362 forward through the reset spring 3363, the hook can be stuck in the fixed groove 3364, thereby limiting the movement of the movable block 334 and improving the stability of the movable block 334. When the movable block 334 needs to be moved, the button 3362 is pressed backward to rotate the movable rod 3361, so that the hook releases the restriction on the fixed groove 3364, making it convenient to adjust the position of the movable block 334 to the left and right.

[0053] See also Figure 1 , Figure 2 , Figure 6 and Figure 8 The driving mechanism 34 includes a hydraulic telescopic rod 341 fixedly installed on the vertical section of the top frame 2, and the end of the hydraulic telescopic rod 341 close to the center of the top frame 2 is fixedly connected to an adjusting track 342, a lead screw 343 is rotatably installed inside the adjusting track 342, and a wedge block 344 is threadedly connected to the outside of the lead screw 343, and the wedge block 344 is slidably installed in the adjusting track 342 forward and backward, and a hand wheel 345 is fixedly connected to the front end of the lead screw 343, and an inclined groove 346 is provided on the wedge block 344, and the end of the inclined groove 346 close to the center of the top frame 2 is inclined downward, and the second plug rod 332 is slidably installed in the inside of the inclined groove 346, and a socket 347 is also provided on the wedge block 344, and the socket 347 is located below the end of the inclined groove 346 close to the center of the top frame 2, and the first plug rod 322 is plugged into and matched with the socket 347.

[0054] By rotating the hand wheel 345 to drive the lead screw 343 to rotate, the wedge block 344 can be moved forward or backward, and the wedge block 344 can be adjusted to different front, middle and rear positions. When the wedge block 344 moves to the front, the first plug rod 322 is inserted into the inside of the socket 347, and the hydraulic telescopic rod 341 drives the wedge block 344 to move left and right, so that the horizontal pushing mechanism 32 moves left and right; when the wedge block 344 moves to the middle, while the first plug rod 322 is still inserted into the socket 347, the second plug rod 332 will be inserted into the inside of the inclined groove 346, and the hydraulic telescopic rod 341 drives the wedge block 344 to move left and right, so that the first plug rod 322 moves left and right, and the inclined groove 346 can guide the second plug rod 332 to move up and down. When the wedge block 344 moves to the rear, only the second plug rod 332 is inserted into the inside of the inclined groove 346, so that the driving mechanism 34 can only drive the longitudinal pushing mechanism 33 to move up and down.

[0055] See also Figure 1 , Figure 2 and Fig. 9 The probe mechanism 42 includes an electric telescopic rod 421 fixedly connected to the outer wall of the movable frame 31 on the side close to the center of the top frame 2, an ultrasonic probe 422 at one end of the electric telescopic rod 421 close to the center of the top frame 2, and the ultrasonic probe 422 is electrically connected to the detector body 41. The upper and lower sides of the fixed section of the electric telescopic rod 421 are connected to elastic telescopic rods 423, and the end of the elastic telescopic rod 423 away from the electric telescopic rod 421 is rotatably installed with a roller 424.

[0056] The distance between the ultrasonic probe 422 and the weld is adjusted by the telescopic movement of the electric telescopic rod 421, and the distance is kept stable, so that the ultrasonic probe 422 can accurately detect the weld. During the detection, the roller 424 on the elastic telescopic rod 423 on the upper side of the fixed section of the electric telescopic rod 421 contacts the lower end surface of the top plate of the I-shaped steel column 5, and the roller 424 on the lower side of the elastic telescopic rod 423 contacts the vertical side of the vertical plate of the I-shaped steel column 5. The elastic telescopic rods 423 on the upper and lower sides can support and guide the electric telescopic rod 421 in both horizontal and vertical directions, thereby improving the stability of the ultrasonic probe 422 when moving.

[0057] The present invention also provides a method for detecting welding points in steel structure construction, comprising the following steps: S1, installing the detection device on the I-shaped steel column 5, allowing the base plate to pass between the upper clamping plate 12 and the lower clamping plate 143, and then rotating the rotating sleeve 145 to drive the threaded sleeve 141 to rotate, and driving the threaded rod 142 to move upward through the threaded sleeve 141, so that the threaded rod 142 pushes the lower clamping plate 143 to clamp the base plate, and at the same time, the rotating sleeve 145 drives the gear 135 to rotate, and drives the rack 133 to move through the gear 135, so that the rack 133 pulls the roller frame 131 and the clamping roller 132 to clamp the left and right ends of the base plate.

[0058] S2. Adjust the position of the ultrasonic probe 422, make the roller 424 on the elastic telescopic rod 423 on the upper side of the fixed section of the electric telescopic rod 421 contact the lower end surface of the top plate of the I-shaped steel column 5, and the roller 424 on the lower side of the elastic telescopic rod 423 contact the vertical side of the vertical plate of the I-shaped steel column 5, and then push the ultrasonic probe 422 to a position close to the weld through the electric telescopic rod 421, so that the ultrasonic probe 422 is aligned with the weld.

[0059] S3. Connect the driving mechanism 34 with the lateral pushing mechanism 32 for pushing detection. By rotating the hand wheel 345 to drive the lead screw 343 to rotate, the wedge block 344 moves to the front end of the adjusting rail 342. At this time, the first plug rod 322 is inserted into the interior of the plug hole 347, and the second plug rod 332 is separated from the inclined groove 346. Then, the detector body 41 is opened, and the ultrasonic probe 422 at the rear is used to detect the initial state of the weld. Then, the movable guide device 1 is pushed backward along the I-shaped steel column 5 for a distance. Then, the hydraulic telescopic rod 341 pushes the wedge block 344 to move in the direction close to the I-shaped steel column 5 and pushes. First, the magnetic pressing block 324 on the left side pushes the vertical plate alone, and then the magnetic pressing block 324 on the right side pushes the vertical plate alone. Finally, the magnetic pressing blocks 324 on the left and right sides push the vertical plate at the same time.

[0060] S4. Connect the driving mechanism 34 with the lateral pushing mechanism 32 and the longitudinal pushing mechanism 33 to perform pushing detection at the same time. Rotate the hand wheel 345 to drive the lead screw 343 to rotate, so that the wedge block 344 moves to the middle position of the adjustment track 342. At this time, the first plug rod 322 is inserted into the inside of the plug hole 347, and the second plug rod 332 is inserted into the inside of the inclined groove 346. At this time, the hydraulic telescopic rod 341 pushes the wedge block 344 to move in the direction close to the I-shaped steel column 5, and then the wedge block 344 pushes the lateral pushing mechanism 32 to push the vertical plate, and at the same time, the wedge block 344 will push the longitudinal pushing mechanism 33 to move upward to push the top plate, so that the weld between the vertical plate and the top plate is subjected to outward forces on both sides.

[0061] S5. Connect the driving mechanism 34 and the longitudinal pushing mechanism 33 separately to perform pushing detection. Rotate the hand wheel 345 to drive the lead screw 343 to rotate, so that the wedge block 344 moves to the rear end position of the adjustment track 342. At this time, the second plug rod 332 is inserted into the inclined groove 346, and the first plug rod 322 is separated from the insertion hole 347. The hydraulic telescopic rod 341 pushes the wedge block 344 to move toward the direction close to the I-shaped steel column 5, so that the pushing block 335 located below the top plate can push the top plate upward; The hydraulic telescopic rod 341 pushes the wedge block 344 to move in the direction away from the I-shaped steel column 5, so that the pushing block 335 located above the top plate can push the top plate downward symmetrically; by pressing the button 3362 to release the lock on the movable block 334, and then adjusting the position of the movable block 334, the left and right movable blocks 334 are set asymmetrically, and then the hydraulic telescopic rod 341 pushes the wedge block 344 to move in the direction away from the I-shaped steel column 5 again, so that the pushing block 335 located above the top plate pushes the top plate downward asymmetrically.

[0062] S6. The driving mechanism 34 on the left is separately connected to the corresponding longitudinal pushing mechanism 33, and the driving mechanism 34 on the right is separately connected to the corresponding transverse pushing mechanism 32. The driving mechanism 34 on the left drives the longitudinal pushing mechanism 33 to move downward to push the left end of the top plate downward. At the same time, the driving mechanism 34 on the right drives the transverse pushing mechanism 32 to move leftward to push the vertical plate to the left, so that the weld between the vertical plate and the top plate is subjected to inward forces on both sides.

[0063] S7. During the pushing and squeezing detection process, the weld is tested with the front ultrasonic probe 422 each time the weld is pushed to determine whether the weld is cracked under pressure.

[0064] S8. After the inspection of the weld between the top plate and the vertical plate is completed, the inspection device leaves the I-shaped steel column 5, and then turns the I-shaped steel column 5 over so that its bottom plate faces upward, and then completes the inspection of the weld between the vertical plate and the bottom plate according to the above steps S1-S7.

[0065] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding point detection device for steel structure construction, characterized in that: The mobile guide device (1) comprises a top frame (2) connected to the top of the mobile guide device (1), a pushing device (3) is installed on both the left and right sides of the top frame (2), and a detection device (4) is arranged between the top frame (2) and the pushing device (3); The movable guide device (1) comprises a bottom frame (11) of a U-shaped structure, the tops of the left and right ends of the bottom frame (11) are fixedly connected with upper clamping plates (12), the middle part of the bottom frame (11) is equipped with a longitudinal limit mechanism (14) for cooperating with the upper clamping plate (12) to clamp up and down, the bottom frame (11) is also equipped with a transverse limit mechanism (13) symmetrically distributed with respect to the longitudinal limit mechanism (14) and clamping left and right, the transverse limit mechanism (13) and the longitudinal limit mechanism (14) are linked to cooperate to guide and limit the I-shaped steel column (5), and the bottom of the bottom frame (11) is equipped with an anti-rotation mechanism (15) for limiting the longitudinal limit mechanism (14); The pushing device (3) comprises a movable frame (31) fixedly mounted on the vertical inner wall of the top frame (2); a lateral pushing mechanism (32) is slidably mounted on one side of the movable frame (31) close to the center of the top frame (2) so as to slide left and right; a longitudinal pushing mechanism (33) is slidably mounted on the top of the movable frame (31) so as to slide up and down; and a driving mechanism (34) is mounted inside the movable frame (31) so as to drive the lateral pushing mechanism (32) and the longitudinal pushing mechanism (33) to move; The lateral pushing mechanism (32) comprises a lateral push rod (321) slidably mounted on a side of the movable frame (31) close to the center of the top frame (2); a first plug rod (322) is fixedly connected to the rear side of one end of the lateral push rod (321) away from the center of the top frame (2); a slide groove frame (323) is fixedly connected to one end of the lateral push rod (321) close to the center of the top frame (2); a magnetic pressing block (324) is slidably mounted on one side of the slide groove frame (323) close to the center of the top frame (2); the slide groove frame (323) on the left side is vertically arranged, and the slide groove frame (323) on the right side is horizontally arranged; The longitudinal pushing mechanism (33) comprises a longitudinal push rod (331) slidably mounted on the top of the movable frame (31) up and down, a second plug rod (332) being fixedly connected to the front side of the bottom end of the longitudinal push rod (331), a C-shaped frame (333) being fixedly connected to the top end of the longitudinal push rod (331), a movable block (334) being slidably mounted on one side of the upper horizontal section of the C-shaped frame (333) close to the center of the top frame (2), a pushing block (335) being fixedly mounted on opposite sides of the movable block (334) and the lower horizontal section of the C-shaped frame (333), and a fixing component (336) for limiting the sliding of the movable block (334) being also mounted on the front end of the C-shaped frame (333); The driving mechanism (34) comprises a hydraulic telescopic rod (341) fixedly mounted on a vertical section of the top frame (2); one end of the hydraulic telescopic rod (341) close to the center of the top frame (2) is fixedly connected to an adjustment track (342); a lead screw (343) is rotatably mounted inside the adjustment track (342); a wedge block (344) is threadedly connected to the outside of the lead screw (343); the wedge block (344) is slidably mounted in the adjustment track (342) in a forward and backward manner; and a front end of the lead screw (343) is A hand wheel (345) is fixedly connected, an inclined groove (346) is provided on the wedge block (344), one end of the inclined groove (346) close to the center of the top frame (2) is inclined downward, the second insertion rod (332) is slidably installed inside the inclined groove (346), and a plug hole (347) is also provided inside the wedge block (344), the plug hole (347) is located below one end of the inclined groove (346) close to the center of the top frame (2), and the first insertion rod (322) is plugged into and matched with the plug hole (347); The detection device (4) comprises a detector body (41) fixedly mounted on the vertical section of the top frame (2), and probe mechanisms (42) are symmetrically mounted on the upper ends of the movable frames (31) on one side close to each other.

2. A steel structure construction welding point detection device according to claim 1, characterized in that: The longitudinal limiting mechanism (14) comprises a threaded sleeve (141) rotatably mounted on the middle part of the bottom frame (11); the internal thread of the threaded sleeve (141) is connected to a threaded rod (142); the top of the threaded rod (142) is rotatably connected to a lower clamping plate (143) located above the horizontal section of the bottom frame (11); the opposing surfaces of the lower clamping plate (143) and the upper clamping plate (12) are rotatably mounted with ball bearings; the bottom of the lower clamping plate (143) is fixedly connected to a guide rod (144) symmetrically distributed about the threaded rod (142); the guide rod (144) is slidably mounted up and down on the horizontal section of the bottom frame (11); the bottom end of the threaded sleeve (141) extends to the bottom of the bottom frame (11) and is fixedly connected to a rotating sleeve (145).

3. A steel structure construction welding point detection device according to claim 2, characterized in that: The transverse limiting mechanism (13) comprises a roller frame (131) slidably mounted on a horizontal section of a bottom frame (11), the two roller frames (131) being symmetrically distributed with respect to the bottom frame (11), a plurality of pressing rollers (132) equidistantly distributed front and back being rotatably mounted on opposite sides of the roller frame (131), a rack (133) located at the bottom of the bottom frame (11) and slidably connected to the bottom frame (11) being fixedly connected at the bottom, a guide rail (134) being fixedly connected at a position of the bottom of the bottom frame (11) corresponding to the rack (133), the rack (133) being slidably mounted inside the corresponding guide rail (134), a gear (135) being fixedly connected to the outside of the rotating sleeve (145), the gear (133) being meshed with the gear (135), and the two gear racks (133) being respectively distributed at the front and rear sides of the gear (135).

4. A steel structure construction welding point detection device according to claim 2, characterized in that: The anti-rotation mechanism (15) comprises an L-shaped guide frame (151) fixedly mounted at the bottom of the bottom frame (11); a limit rod (152) is slidably mounted inside the vertical section of the L-shaped guide frame (151) to the left and right; a blocking piece (153) is fixedly connected to the outside of the limit rod (152); the top of the blocking piece (153) is slidably mounted on the horizontal section of the L-shaped guide frame (151) to the left and right; a return spring (154) is fixedly connected between the blocking piece (153) and the vertical section of the L-shaped guide frame (151); one end of the limit rod (152) close to the rotating sleeve (145) is arranged as a wedge-shaped structure, and one end away from the rotating sleeve (145) is fixedly connected to a pull ring (155); and a plurality of limit holes (156) matching the wedge-shaped structure are evenly distributed circumferentially on the outer wall of the rotating sleeve (145).

5. A steel structure construction welding point detection device according to claim 1, characterized in that: The fixing assembly (336) comprises a movable rod (3361) rotatably mounted in the upper horizontal section of the U-shaped frame (333); a hook is provided at one end of the movable rod (3361) close to the movable block (334); an end of the movable rod (3361) away from the movable block (334) passes through the front end of the U-shaped frame (333) and is fixedly connected with a button (3362); a second return spring (3363) is fixedly connected between the end of the button (3362) away from the movable block (334) and the inner wall of the U-shaped frame (333); a plurality of equally spaced fixing grooves (3364) are provided on one side of the movable block (334) close to the movable rod (3361); and the fixing grooves (3364) cooperate with the hook.

6. A steel structure construction welding point detection device according to claim 1, characterized in that: The probe mechanism (42) comprises an electric telescopic rod (421) fixedly connected to the outer wall of the movable frame (31) on one side close to the center of the top frame (2); an ultrasonic probe (422) is fixedly connected to one end of the electric telescopic rod (421) close to the center of the top frame (2); the ultrasonic probe (422) is electrically connected to the detector body (41); elastic telescopic rods (423) are connected to the upper and lower sides of the fixed section of the electric telescopic rod (421); and a roller (424) is rotatably mounted on one end of the elastic telescopic rod (423) away from the electric telescopic rod (421).

7. A method for detecting welding points in steel structure construction, characterized in that: The welding point detection device for steel structure construction as claimed in claim 1 is used to complete the process, including the following steps: S1. Install the detection device on the I-shaped steel column (5), drive the longitudinal limit mechanism (14) to move upward and cooperate with the upper clamping plate (12) to clamp the bottom plate up and down, and at the same time, the longitudinal limit mechanism (14) drives the transverse limit mechanism (13) to move to clamp the left and right sides of the bottom plate; S2, adjusting the position of the probe mechanism (42) so that the two probe mechanisms (42) on the movable frame (31) are respectively aligned with the welding seams; S3, connecting the driving mechanism (34) to the transverse pushing mechanism (32) for pushing detection, adjusting the driving mechanism (34) to the front end position, so that the driving mechanism (34) is only connected to the transverse pushing mechanism (32) and not connected to the longitudinal pushing mechanism (33), opening the detector body (41), using the rear probe mechanism (42) to detect the initial state of the weld, and then pushing the movable guide device (1) backward along the I-shaped steel column (5) for a distance, and the driving mechanism (34) pushes the transverse pushing mechanism (32) to push the I-shaped steel column (5); S4, connecting the driving mechanism (34) to the transverse pushing mechanism (32) and the longitudinal pushing mechanism (33) to perform pushing detection, adjusting the driving mechanism (34) to a middle position, so that the driving mechanism (34) is connected to the transverse pushing mechanism (32) and the longitudinal pushing mechanism (33) at the same time, and then the driving mechanism (34) simultaneously pushes the transverse pushing mechanism (32) and the longitudinal pushing mechanism (33) to move and push the I-shaped steel column (5); S5, connecting the driving mechanism (34) and the longitudinal pushing mechanism (33) separately to perform pushing detection, adjusting the driving mechanism (34) to the rear position so that the driving mechanism (34) is only connected to the longitudinal pushing mechanism (33), and then the driving mechanism (34) pushes the longitudinal pushing mechanism (33) to move and push the I-shaped steel column (5); S6, the left driving mechanism (34) is connected to the corresponding longitudinal pushing mechanism (33) separately, and the right driving mechanism (34) is connected to the corresponding transverse pushing mechanism (32) separately, the left driving mechanism (34) drives the longitudinal pushing mechanism (33) to move downward to push the left end of the top plate downward, and the right driving mechanism (34) drives the transverse pushing mechanism (32) to move leftward to push the vertical plate to the left, so that the two sides of the weld are squeezed inward; S7, during the above-mentioned pushing and squeezing detection process, the front probe mechanism (42) is used to test the weld each time the weld is pushed, to determine whether the weld cracks under the pressure; S8. After the inspection of the weld between the top plate and the vertical plate is completed, the inspection device leaves the I-shaped steel column (5), and then the I-shaped steel column (5) is turned over so that its bottom plate faces upward, and then the inspection of the weld between the vertical plate and the bottom plate is completed according to the above steps S1-S7.

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