A non-destructive testing device for steel structure welding quality

Abstract

The utility model relates to steel structure welding technical field discloses a kind of steel structure welding quality nondestructive testing device, including detector, the bottom of the detector is equipped with walking mechanism, the action of the walking mechanism is to support the movement of detector, the walking mechanism includes pedestal, the bottom left and right sides of the pedestal are fixedly connected with connecting plate, the bottom of both sides connecting plate is fixedly connected with wheel bracket, the bottom wall middle part of connecting plate is equipped with drive assembly, the top wall of connecting plate is equipped with damping assembly.In the utility model, motor one drives driving gear and driven gear synchronous rotation, roller rotates in the bottom of detector with wheel bracket as support, drives detector to advance or retreat, fixed pipe and moving tube relative motion and compression shock absorbing spring absorb shock, the mechanism does not need artificial or external force traction and gives consideration to shock absorption, solve the problem that existing technology needs special person to operate, lacks damping measure.

Description

Technical Field

[0001] This utility model relates to the field of steel structure welding technology, and in particular to a non-destructive testing device for steel structure welding quality. Background Technology

[0002] In the field of steel structure engineering, welding quality directly determines the load-bearing capacity and safety performance of the structure. Therefore, it is necessary to use non-destructive testing (NDT) devices to detect internal defects in the welds. Currently, the mainstream NDT devices used for steel structure welding are ultrasonic testing instruments and X-ray testing instruments. These devices are mainly portable. During testing, staff need to hold the device or use a simple stand to place the probe against the weld surface and move it along the weld trajectory to complete the test. They are widely used in building steel structures, bridge steel structures, and pressure vessel scenarios. However, steel structure welds in different scenarios often have height differences (such as transverse welds in multi-layer steel components and three-dimensional welds at the connection between steel columns and steel beams), which places requirements on the height adaptability of the testing devices. Traditional equipment lacks a dedicated walking mechanism, requiring frequent manual handling or pushing during inspection. This is especially problematic when inspecting large steel structures, where workers must lift or drag the equipment for extended periods, resulting in high labor intensity and uneven inspection speeds due to physical exhaustion. To address these issues, existing technologies propose adding simple rollers, such as plastic casters, to reduce friction between the equipment and the steel structure surface and assist movement, thus freeing up manpower. However, in practice, these simple rollers still require manual dragging or pulling, necessitating dedicated operation. Furthermore, the lack of shock absorption measures fails to mitigate vibrations generated during overall equipment movement, potentially leading to component loosening and shortening the equipment's lifespan over time. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a non-destructive testing device for steel structure welding quality, which aims to improve the problems of existing technologies that still require dedicated personnel to operate, lack vibration reduction measures, and shorten the service life of the device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a non-destructive testing device for steel structure welding quality, including a testing instrument, a walking mechanism installed at the bottom of the testing instrument, the function of the walking mechanism being to support the movement of the testing instrument, and lifting mechanisms installed on the front and rear sides of the outer wall of the testing instrument, the function of the lifting mechanisms being to finely adjust the height of the testing instrument to ensure testing accuracy. The walking mechanism includes a base, which is fixedly connected to the bottom wall of the detector. Connecting plates are fixedly connected to the left and right sides of the bottom of the base. Wheel frames are fixedly connected to the front and rear ends of the bottom of the connecting plates on both sides. A drive assembly is installed in the middle of the bottom wall of the connecting plate, and a shock-absorbing assembly is installed on the top wall of the connecting plate.

[0005] As a further description of the above technical solution: The drive assembly includes a motor, the top of which is fixedly connected to the front side of the bottom wall of the connecting plate. A drive gear is fixedly connected to the output end of the motor, and a driven gear is meshed with the right side of the drive gear. An axle passes through the middle of the driven gear, and rollers are fixedly connected to both the front and rear ends of the axle. Both rollers are rotatably connected inside the wheel frame.

[0006] As a further description of the above technical solution: The shock absorption assembly includes two fixed tubes, both of which are fixedly connected to the top wall of the connecting plate. A movable tube is slidably connected to the inner wall of the middle part of each of the two fixed tubes, and a shock absorption spring is fixedly connected to the outer side of the top wall of each of the two movable tubes.

[0007] As a further description of the above technical solution: The lifting mechanism includes multiple limiting bars, which are fixedly connected at equal intervals around the top of the base. Motor 2 is provided in the middle of the front and rear outer walls of the base. Transmission components are installed on the left side of each of the two motor 2. Connecting pins are fixedly connected to the bottom of the front and rear outer walls of the detector.

[0008] As a further description of the above technical solution: The transmission assembly includes a worm gear, which is fixedly connected to the output end of the second motor. A worm wheel is meshed with the outer wall of the worm gear, and a threaded rod is threadedly connected to the middle of the worm wheel. The top end of the threaded rod is fixedly connected to the bottom of the connecting pin.

[0009] As a further description of the above technical solution: Ball bearings are rotatably connected to the outer walls of both the left and right ends of the worm. A protective shell is provided on the outer side of both the worm wheel and the worm. A motor bracket is fixedly connected to the bottom of the protective shell, and the motor bracket is installed at the bottom of the worm.

[0010] As a further description of the above technical solution: The outer walls of both ball bearings are fixedly connected to the inner wall of the housing, and the two housings are fixedly connected to the middle of the front and rear outer walls of the base.

[0011] As a further description of the above technical solution: Each of the limiting strips has a reinforcing rib fixedly connected to its top, and the reinforcing ribs are arranged around the top of the outer wall of the detector.

[0012] This utility model has the following beneficial effects: 1. In this utility model, the motor drives the active gear and the driven gear to rotate synchronously. The roller rotates at the bottom of the detector with the wheel frame as support, driving the detector to move forward or backward. The vibration is transmitted to the shock absorption component through the drive component and absorbed by the relative movement of the fixed tube and the moving tube and the compression of the shock absorption spring. This mechanism adds a power system to the roller, which does not require manual or external traction and takes into account vibration absorption. It solves the problems of the prior art that it requires special operation and lacks shock absorption measures, which shortens the service life of the device. 2. In this utility model, the worm gear rotates under the drive of the second motor, causing the worm wheel to rotate horizontally. The vertical position of the worm wheel is fixed. The threaded rod drives the connecting pin and the connected detector to move up and down under the action of the internal thread. The limiting strip provides a track for the movement of the detector and limits it to prevent deviation during movement. The height of the detector can be finely adjusted according to the real-time measurement requirements to ensure the accuracy of the detection to the maximum extent. Attached Figure Description

[0013] Figure 1 This is a front view of a non-destructive testing device for steel structure welding quality proposed in this utility model; Figure 2 This is a perspective view of a non-destructive testing device for steel structure welding quality proposed in this utility model; Figure 3 This is a split view of the walking mechanism of a non-destructive testing device for steel structure welding quality proposed in this utility model; Figure 4 This is a partial structural exploded view of a non-destructive testing device for steel structure welding quality proposed in this utility model; Figure 5 This is a split view of the lifting mechanism of a non-destructive testing device for steel structure welding quality proposed in this utility model; Figure 6 for Figure 5 Enlarged view of point A in the image.

[0014] Legend: 1. Detector; 2. Walking mechanism; 201. Base; 202. Connecting plate; 203. Drive assembly; 2031. Motor 1; 2032. Drive gear; 2033. Driven gear; 2034. Axle; 2035. Roller; 204. Shock absorption assembly; 2041. Fixed tube; 2042. Shock absorption spring; 2043. Moving tube; 205. Wheel frame; 3. Lifting mechanism; 301. Limit bar; 302. Motor 2; 303. Transmission assembly; 3031. Worm gear; 3032. Worm wheel; 3033. Threaded rod; 304. Connecting pin; 4. Motor bracket; 5. Protective shell; 6. Ball bearing; 7. Reinforcing rib. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Reference Figure 1 , Figure 3 and Figure 4 The present invention provides an embodiment of a non-destructive testing device for steel structure welding quality, comprising a testing instrument 1, a walking mechanism 2 installed at the bottom of the testing instrument 1, the function of the walking mechanism 2 being to support the movement of the testing instrument 1, and lifting mechanisms 3 installed on the front and rear sides of the outer wall of the testing instrument 1, the function of the lifting mechanisms 3 being to finely adjust the height of the testing instrument 1 to ensure testing accuracy. The walking mechanism 2 includes a base 201, which is fixedly connected to the bottom wall of the detector 1. A connecting plate 202 is fixedly connected to the left and right sides of the bottom of the base 201. A wheel frame 205 is fixedly connected to the front and rear ends of the bottom of the connecting plates 202 on both sides. A drive assembly 203 is installed in the middle of the bottom wall of the connecting plate 202, and a shock absorption assembly 204 is installed on the top wall of the connecting plate 202. The drive assembly 203 includes a motor 2031, model Y132S-4. When three-phase AC power is applied to the stator, a rotating magnetic field is generated, causing the rotor to rotate along with the rotating magnetic field. The top of the motor 2031 is fixedly connected to the front side of the bottom wall of the connecting plate 202. The output end of the motor 2031 is fixedly connected to a drive gear 2032. The right side of the drive gear 2032 is meshed with a driven gear 2033. The middle of the driven gear 2033 has a wheel axle 2034. Rollers 2035 are fixedly connected to the front and rear ends of the wheel axle 2034. Both rollers 2035 are rotatably connected inside the wheel frame 205. The shock absorption assembly 204 includes two fixed tubes 2041, both of which are fixedly connected to the top wall of the connecting plate 202. The inner walls of the middle part of the two fixed tubes 2041 are slidably connected to a movable tube 2043, and the outer sides of the top walls of the two movable tubes 2043 are fixedly connected to a shock absorption spring 2042. Specifically, the bottom of the base 201 has a frame-like hollow structure. The size of the hollow area matches the propagation path of the measuring medium emitted by the detector 1, allowing the measuring medium emitted by the detector 1 to pass directly through. The connecting plate 202 connects the detector 1 and the drive assembly 203. When the position of the detector 1 needs to be changed according to the detection position requirements, the motor 2031 is started, driving the drive gear 2032 to rotate. The drive gear 2032 meshes with and drives the driven gear 2033 to rotate. The center hole of the driven gear 2033 cooperates with the axle 2034 and drives the axle 2034 and the rollers 2035 sleeved at both ends of the axle 2034 to rotate. The rollers 2035 thus rotate. The detector 1 rotates at its bottom supported by a wheel frame 205 fixed to the bottom of the drive assembly 203. The friction between the roller 2035 and the ground drives the detector 1 to move forward or backward. The connecting plate 202 is connected to the base 201 through the shock absorption assembly 204. When the detector 1 encounters uneven ground and is vibrated during its movement, the vibration is transmitted through the housing of the drive assembly 203 to the shock absorption assembly 204. The vibration energy is absorbed by the relative extension and retraction of the fixed tube 2041 and the moving tube 2043 sleeved inside the fixed tube 2041 in the shock absorption assembly 204, as well as the compression and rebound of the shock absorption spring 2042 between them.

[0017] Reference Figure 2 , Figure 5 and Figure 6 The lifting mechanism 3 includes multiple limit bars 301, which are fixedly connected at equal intervals around the top of the base 201. Motor 2 302, model Y132S-4, is installed in the middle of the front and rear outer walls of the base 201. After three-phase AC power is applied to the internal stator, a rotating magnetic field is generated, which causes the rotor to rotate with the rotating magnetic field, realizing the conversion of electrical energy into mechanical energy. Transmission components 303 are installed on the left side of the two motors 2 302. Connecting pins 304 are fixedly connected to the bottom of the front and rear outer walls of the detector 1. The transmission assembly 303 includes a worm gear 3031, which is fixedly connected to the output end of the motor 302. A worm wheel 3032 is meshed with the outer wall of the worm gear 3031. A threaded rod 3033 is threadedly connected to the middle of the worm wheel 3032, and the top end of the threaded rod 3033 is fixedly connected to the bottom of the connecting pin 304. Ball bearings 6 are rotatably connected to the outer walls of both the left and right ends of the worm gear 3031. A protective shell 5 is provided on the outer side of both the worm wheel 3032 and the worm gear 3031. A motor bracket 4 is fixedly connected to the bottom of the protective shell 5 and is installed at the bottom of the worm gear 3031. Specifically, one end of the worm 3031 is fixedly connected to the output shaft of the second motor 302. Driven by the second motor 302, it rotates around its own axis. The helical teeth of the worm 3031 mesh with the teeth of the worm wheel 3032, causing the worm wheel 3032 to begin rotating horizontally around its own central axis. Because the vertical position of the worm wheel 3032 is fixed, the threaded hole inside the worm wheel 3032 engages with the external thread on the surface of the threaded rod 3033. Under the action of the internal thread, the threaded rod 3033 begins to move vertically, driving the connecting rod fixed at the top of the threaded rod 3033 to move. The connector 304 and the detector 1, which is connected to the connector 304 by bolts, move up and down synchronously. At the same time, the limiting strip 301 is vertically fixed on both sides of the detector 1 and cooperates with the guide groove on the equipment bracket to provide a track for the movement of the detector 1. It also limits the horizontal movement of the detector 1 and prevents the detector 1 from deviating during the up and down movement. As a result, the operator can fine-tune the height of the detector 1 by controlling the rotation angle of the motor 2 302 according to the real-time measurement requirements to ensure that the detector 1 is in the optimal detection position and maximize the accuracy of the detection.

[0018] Reference Figure 1 , Figure 5 and Figure 6 The outer walls of the two ball bearings 6 are fixedly connected to the inner wall of the housing 5, and the two housings 5 ​​are fixedly connected to the middle of the front and rear outer walls of the base 201; the top of the multiple limit strips 301 are fixedly connected to the reinforcing ribs 7, and the multiple reinforcing ribs 7 are all arranged around the top of the outer wall of the detector 1. Specifically, the protective shell 5 fixes the vertical position of the worm gear 3032 on both sides of the detector 1, the ball bearing 6 allows the worm 3031 to rotate smoothly inside the protective shell 5, and the reinforcing rib 7 connects multiple limit strips 301 into a whole to ensure its structural stability.

[0019] Working principle: The bottom of the base 201 is hollowed out so that the measuring medium emitted by the detector 1 can pass through. The connecting plate 202 connects the detector 1 and the drive assembly 203. When the position of the detector 1 needs to be changed, the motor 2031 drives the drive gear 2032 and the driven gear 2033 to rotate synchronously, and drives the wheel axle 2034 and the roller 2035 to rotate. The roller 2035 rotates at the bottom of the detector 1 with the wheel frame 205 as support, thereby driving the detector 1 to move forward or backward. The connecting plate 202; The shock-absorbing component 204 is connected to the base 201. When the device is vibrated during travel, the vibration is transmitted to the shock-absorbing component 204 via the drive component 203. The vibration is absorbed by the relative movement of the fixed tube 2041 and the moving tube 2043 and the compression of the shock-absorbing spring 2042. This mechanism adds a power system to the simple walking device, eliminating the need for manual or external traction, and also taking into account vibration absorption. It solves the problem that the existing technology still requires a dedicated person to operate, lacks shock absorption measures, and shortens the service life of the device.

[0020] The worm gear 3031 rotates under the drive of the motor 302, which in turn causes the worm wheel 3032 to start rotating horizontally. Since the vertical position of the worm wheel 3032 is fixed, the threaded rod 3033, under the action of the internal thread, starts to drive the connecting pin 304 and the connected detector 1 to move up and down. At the same time, the limiting strip 301 provides a track for the movement of the detector 1 and also plays a limiting role to prevent deviation during the movement. This allows the height of the detector 1 to be finely adjusted according to the real-time measurement requirements, maximizing the accuracy of the detection.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A non-destructive testing device for steel structure welding quality, comprising a testing instrument (1), characterized in that: The bottom of the detector (1) is equipped with a walking mechanism (2), which supports the movement of the detector (1). Lifting mechanisms (3) are installed on the front and rear sides of the outer wall of the detector (1). The walking mechanism (2) includes a base (201), which is fixedly connected to the bottom wall of the detector (1). A connecting plate (202) is fixedly connected to the left and right sides of the bottom of the base (201). A wheel frame (205) is fixedly connected to the front and rear ends of the bottom of the connecting plate (202) on both sides. A drive assembly (203) is installed in the middle of the bottom wall of the connecting plate (202), and a shock-absorbing assembly (204) is installed on the top wall of the connecting plate (202).

2. The non-destructive testing device for steel structure welding quality according to claim 1, characterized in that: The drive assembly (203) includes a motor (2031), the top of which is fixedly connected to the front side of the bottom wall of the connecting plate (202). The output end of the motor (2031) is fixedly connected to a drive gear (2032). A driven gear (2033) is meshed with the right side of the drive gear (2032). A wheel axle (2034) passes through the middle of the driven gear (2033). Rollers (2035) are fixedly connected to the front and rear ends of the wheel axle (2034). Both rollers (2035) are rotatably connected inside the wheel frame (205).

3. The non-destructive testing device for steel structure welding quality according to claim 1, characterized in that: The shock absorption assembly (204) includes two fixed tubes (2041), both of which are fixedly connected to the top wall of the connecting plate (202). The inner walls of the middle part of the two fixed tubes (2041) are slidably connected to a movable tube (2043), and the outer sides of the top walls of the two movable tubes (2043) are fixedly connected to a shock absorption spring (2042).

4. The non-destructive testing device for steel structure welding quality according to claim 1, characterized in that: The lifting mechanism (3) includes multiple limiting bars (301), which are fixedly connected at equal intervals around the top of the base (201). Motor 2 (302) is provided in the middle of the front and rear outer walls of the base (201). Transmission assembly (303) is installed on the left side of each of the two motor 2 (302). Connecting pin (304) is fixedly connected to the bottom of the front and rear outer walls of the detector (1).

5. The non-destructive testing device for steel structure welding quality according to claim 4, characterized in that: The transmission assembly (303) includes a worm gear (3031), which is fixedly connected to the output end of the second motor (302). A worm wheel (3032) is meshed with the outer wall of the worm gear (3031). A threaded rod (3033) is threadedly connected to the middle of the worm wheel (3032). The top end of the threaded rod (3033) is fixedly connected to the bottom of the connecting pin (304).

6. The non-destructive testing device for steel structure welding quality according to claim 5, characterized in that: The outer walls of the left and right ends of the worm (3031) are rotatably connected with ball bearings (6). The outer sides of the worm wheel (3032) and the worm (3031) are provided with protective shells (5). The bottom of the protective shell (5) is fixedly connected with a motor bracket (4). The motor bracket (4) is installed at the bottom of the worm (3031).

7. The non-destructive testing device for steel structure welding quality according to claim 6, characterized in that: The outer walls of the two ball bearings (6) are fixedly connected to the inner wall of the housing (5), and the two housings (5) are fixedly connected to the middle of the front and rear outer walls of the base (201).

8. The non-destructive testing device for steel structure welding quality according to claim 4, characterized in that: Each of the limiting strips (301) has a reinforcing rib (7) fixedly connected to its top end, and the reinforcing ribs (7) are arranged around the top of the outer wall of the detector (1).

Images