Underground pipeline ultrasonic detection equipment

Abstract

The utility model relates to the technical field of underground pipeline detection, and particularly discloses underground pipeline ultrasonic detection equipment which comprises a connecting frame, rotatable wheels are arranged on the two sides of the connecting frame, and a balance mechanism used for guaranteeing balance of an ultrasonic probe is arranged on the connecting frame. The balance mechanism comprises a second movable frame, a telescopic rod is arranged on the second movable frame, the fixed section of the telescopic rod is fixedly connected to the second movable frame, and a detection mechanism used for detecting the underground pipeline is arranged at the telescopic end of the telescopic rod; the technical problem that the detection efficiency is reduced due to the fact that detection equipment is inconvenient to move when underground pipelines in areas with different concave-convex grounds and soil surfaces are detected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of underground pipeline detection, and specifically discloses an underground pipeline ultrasonic detection device. Background Art

[0002] When transporting gas, it is usually transported by pipelines. In order to reduce external interference with the pipelines, the pipelines are usually buried underground. At the same time, in order to prevent pipeline leakage, they need to be inspected regularly, and the frequency of inspection is determined by the nature of the transported gas. If chemical gases that are corrosive to the pipelines are frequently transported, the inspection frequency is higher. The underground pipelines are usually backfilled with soil, which also contains some hard objects such as gravel, and some underground pipelines may also be located in remote areas.

[0003] When inspecting buried pipelines, ultrasonic waves are usually used. Ultrasonic waves can propagate effectively in solids and liquids, but decay rapidly in the air. Therefore, when inspecting underground pipelines, a coupling agent, such as vaseline or butter, needs to be added between the ultrasonic probe and the surface to reduce the energy loss of ultrasonic waves propagating to the underground pipelines.

[0004] For example, the utility model with patent number 202321416531X discloses underground pipeline detection equipment, including a bottom frame, a threaded column is fixedly connected to the upper surface of the bottom frame, a first slide rod is slidably connected to the upper end of the threaded column, a handle is fixedly connected to the upper end of the first slide rod, a fixed plate is fixedly connected to the surface of the threaded column, two second slide rods are fixedly connected to the lower surface of the fixed plate, the lower ends of the two second slide rods are fixedly connected to the upper surface of the bottom frame, a movable plate is slidably connected to the surface of the two second slide rods, and a threaded cap is rotatably connected to the inner wall of the movable plate through a bearing; when the existing underground pipeline detection equipment is used to detect underground pipelines located in remote areas, due to the different unevenness of the ground and the soil surface, the detection equipment is inconvenient to move, and it takes a lot of time for the staff to move it to the designated position, which reduces the efficiency of the detection. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide an ultrasonic detection device for underground pipelines to solve the technical problem that when detecting underground pipelines in areas with different ground convexities and soil surfaces, the detection equipment is inconvenient to move, thereby reducing the detection efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ultrasonic detection device for underground pipelines, comprising a connecting frame, rotatable wheels are arranged on both sides of the connecting frame, and a balancing mechanism for ensuring the balance of the ultrasonic probe is arranged on the connecting frame; the balancing mechanism comprises a second movable frame, a telescopic rod is arranged on the second movable frame, the fixed end of the telescopic rod is fixedly connected to the second movable frame, and a detection mechanism for detecting underground pipelines is arranged at the telescopic end of the telescopic rod. The position of the detection mechanism is adjusted by the balancing mechanism to ensure that the detection mechanism is not affected by the outside world, so that the detection mechanism can detect underground pipelines anytime and anywhere, thereby reducing the time for staff to adjust the detection mechanism and improving the efficiency of detection.

[0007] Furthermore, the balancing mechanism includes a first movable frame, two sets of matching shafts are provided on both sides of the first movable frame and the second movable frame, bearings are mounted on several sets of matching shafts, the bearings on the first movable frame are clamped on the connecting frame, and the bearings on the second movable frame are clamped on the first movable frame; the first movable frame can rotate on the connecting frame, and the second movable frame can rotate on the first movable frame, and the first movable frame and the second movable frame rotate in a perpendicular direction. The balancing mechanism adjusts the detection mechanism through the gravity of the detection mechanism itself, and can adjust the position of the detection mechanism in real time according to the specific situation, without the need for manual adjustment by the staff, so that the efficiency of the detection is improved.

[0008] Furthermore, the detection mechanism includes an ultrasonic probe, a fixing sleeve is provided at the telescopic end of the telescopic rod, the ultrasonic probe is clamped on the fixing sleeve, and a limiting component is provided on the fixing sleeve; the ultrasonic probe is connected to a signal reading device. The detection mechanism detects underground pipelines through ultrasound, and the limiting component ensures that the coupling agent can fill the gap between the ultrasonic probe and the soil, thereby ensuring the accuracy of the detection result.

[0009] Furthermore, the limiting component includes a fixed block, the ultrasonic probe is clamped on the fixed block, and the fixed block is fixedly connected to the fixed sleeve; the four vertices of the fixed block are provided with connecting blocks, and a movable block is slidably clamped between each two groups of adjacent connecting blocks, and limiting blocks are provided on both sides of the movable block, and the two groups of limiting blocks are slidably clamped on the two groups of adjacent connecting blocks. The limiting component can avoid the influence of gravel and ensure that the coupling agent can fill the gap between the ultrasonic probe and the soil under any circumstances, thereby ensuring the accuracy of the detection result.

[0010] Furthermore, the fixed block is provided with several groups of fixed columns, and the movable blocks are provided with two groups of fixed holes, and the fixed columns are respectively installed in the fixed holes; the fixed columns are provided with springs, and the two ends of the springs are respectively in contact with the fixed block and the bottom surface of the fixed hole. The springs can ensure that the movable block automatically returns to its original position and makes its contact with the soil tighter.

[0011] Furthermore, a pipe is provided on the fixing block, a coupling agent suction device is provided at the other end of the pipe, and the coupling agent suction device is located in a storage box filled with coupling agent. The coupling agent suction device sucks the coupling agent between the ultrasonic probe and the soil through the pipe to ensure that there is no air in front of the ultrasonic probe, thereby ensuring the accuracy of its detection result.

[0012] Furthermore, the connecting frame is fixedly connected to a fixing frame, and the fixing frame is provided with two sets of supporting seats; the fixing frame is provided with two sets of matching rods, and both sets of matching rods are provided with handles. The staff can move the ultrasonic detection equipment through the handles, and the supporting seats are used to support the ultrasonic detection equipment.

[0013] The working principle and beneficial effects of this solution are:

[0014] When in use, the staff first pushes the ultrasonic detection equipment through the handle, moves it to the designated position, and then places the ultrasonic detection equipment on the ground through the support seat and wheels. Since the dirt ground is uneven and there may be exposed gravel on the surface, the ultrasonic detection equipment may tilt at this time. The balancing mechanism can automatically adjust the telescopic rod and the detection mechanism so that the ultrasonic probe is always facing the underground pipeline, which is convenient for the detection mechanism to detect the underground pipeline. Then the staff moves the detection mechanism to the designated position by starting the telescopic rod, and detects the underground pipeline through the detection mechanism; the ultrasonic detection equipment can move quickly on the dirt road surface and always keep the ultrasonic probe facing the underground pipeline, so that the ultrasonic detection equipment will not be affected by the external environment, and the staff does not need to adjust the ultrasonic detection equipment, which is convenient for the staff to detect underground pipelines and improves the detection efficiency.

[0015] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment;

[0017] Figure 2 It is a structural schematic diagram of the balancing mechanism in the embodiment;

[0018] Figure 3 It is a structural schematic diagram of the components defined in the embodiment;

[0019] Figure 4 This is an enlarged schematic diagram of region A in the embodiment;

[0020] Figure 5 It is a top view of the components defined in the embodiment.

[0021] The markings in the accompanying drawings are as follows: connecting frame 1, wheel 2, fixed seat 3, connecting shaft 4, first movable frame 5, matching shaft 6, bearing 7, matching hole 8, second movable frame 9, telescopic rod 10, fixing sleeve 11, ultrasonic probe 12, fixing block 13, connecting block 14, movable block 15, limiting block 16, limiting groove 17, fixing column 18, fixing hole 19, spring 20, tilting block 21, pipe 22, fixing frame 23, supporting seat 24, matching rod 25, handle 26. DETAILED DESCRIPTION

[0022] The following is further described in detail through specific implementation methods:

[0023] Example

[0024] like Figures 1 to 5 As shown, an ultrasonic detection device for underground pipelines is disclosed, including a connecting frame 1, and wheels 2 are arranged on the connecting frame 1. The wheels 2 are in contact with the ground, and the diameter of the wheels 2 is large, so that potholes on the dirt road surface can be ignored. Fixed seats 3 are arranged on both sides of the connecting frame 1, and connecting shafts 4 are arranged on the wheels 2. Two groups of connecting shafts 4 are respectively installed in the two groups of fixing seats 3, and the connecting shafts 4 are rotatably connected to the fixing seats 3. One end of the connecting frame 1 is fixedly connected to a fixing frame 23, and two groups of supporting seats 24 are arranged on the fixing frame 23. The two groups of supporting seats 24 are in contact with the ground, and the supporting seats 24 cooperate with the wheels 2 to make the connecting frame 1 parallel to the ground. Two groups of matching rods 25 are arranged on the fixing frame 23, and handles 26 are arranged on the matching rods 25.

[0025] A balancing mechanism is arranged in the connecting frame 1, and the balancing mechanism includes a first movable frame 5 and a second movable frame 9. Matching shafts 6 are arranged on both sides of the first movable frame 5. Two groups of matching holes 8 are opened on the connecting frame 1, and the two groups of matching shafts 6 are respectively installed in the matching holes 8. Two groups of matching holes 8 are opened on the first movable frame 5, and two groups of matching shafts 6 are arranged on the second movable frame 9. The two groups of matching shafts 6 are installed in the matching holes 8. The second movable frame 9 is rotatably connected to the first movable frame 5. Bearings 7 are arranged between the groups of matching shafts 6 and the groups of matching holes 8. The matching shafts 6 The first movable frame 5 is installed on the inner ring of the bearing 7, and the outer ring of the bearing 7 is clamped in the matching hole 8. The first movable frame 5 is rotatably connected to the connecting frame 1; the rotation direction of the first movable frame 5 and the connecting frame 1 is the same as the travel direction of the wheel 2, and the rotation direction of the second movable frame 9 and the first movable frame 5 is toward the wheel 2; the connecting frame 1, the first movable frame 5 and the second movable frame 9 are all located in the same horizontal plane, the first movable frame 5 is located in the connecting frame 1, and the second movable frame 9 is located in the first movable frame 5; wherein the two sets of matching shafts 6 on the first movable frame 5 overlap with the two sets of connecting shafts 4, such as Figure 2 shown.

[0026] The second movable frame 9 is provided with a telescopic rod 10, the fixed end of the telescopic rod 10 is fixed to the second movable frame 9 by bolts, the cylinder of the telescopic rod 10 is installed on the second movable frame 9, and a detection mechanism is provided on the telescopic end of the telescopic rod 10. The detection mechanism includes a fixed sleeve 11, which is fixedly connected to the telescopic end of the telescopic rod 10, an ultrasonic probe 12 is clamped on the fixed sleeve 11, and a signal reading device is connected to the ultrasonic probe 12. A limiting component is provided on the fixed sleeve 11; Figure 3 shown.

[0027] The limiting component includes a fixed block 13, which is fixedly connected to the fixed sleeve 11, and one end of the ultrasonic probe 12 is clamped on the fixed block 13. Connecting blocks 14 are arranged at the four vertices of the fixed block 13. A movable block 15 is slidably clamped between every two adjacent connecting blocks 14. Both sides of the movable block 15 are respectively in contact with the two adjacent connecting blocks 14. Limiting blocks 16 are arranged on both sides of the movable block 15. Limiting grooves 17 are arranged on the fixed block 13. The two groups of limiting blocks 16 are respectively slidably clamped in the corresponding two groups of limiting grooves 17. The cross-section of the limiting block 16 is triangular, and the cross-section of the limiting groove 17 is rectangular. The two adjacent groups of limiting blocks 16 on the two adjacent movable blocks 15 are both slidably clamped in the corresponding limiting grooves 17, and the two adjacent groups of limiting blocks 16 are in contact with each other. Figure 5 As shown; two sets of fixing holes 19 are provided on the plurality of movable blocks 15, and a plurality of fixing columns 18 are provided on the fixing block 13, and a plurality of fixing columns 18 are respectively located in a plurality of fixing holes 19, and a plurality of fixing columns 18 are respectively provided with springs 20, and a plurality of springs 20 are respectively located in a plurality of fixing holes 19, and the two ends of the springs 20 are respectively in contact with the fixing block 13 and the bottom end of the fixing hole 19, such as Figure 4As shown, a tilting block 21 is provided at one end of the movable block 15, and the tilting block 21 is used to reduce the contact area with the ground.

[0028] A pipe 22 is provided on the fixed block 13, and the pipe 22 is connected to the space enclosed by the four groups of movable blocks 15 and the fixed block 13. The other end of the pipe 22 is connected to a coupling agent suction device, and the coupling agent suction device is located in a storage box, and the storage box is full of coupling agent, and the storage box is fixedly connected to the fixed frame 23; wherein the storage box and the coupling agent suction device are not shown in the figure, but the storage box and the coupling agent suction device are commonly used means by those skilled in the art, and their structures and usage methods are technologies well known to those skilled in the art; the structure, connection method and usage method of the ultrasonic probe 12 and the signal reading device are technologies well known to those skilled in the art.

[0029] When implementing

[0030] When in use, the staff first holds the handle 26, and then uses the handle 26 to move the matching rod 25 and the support seat 24 upward to separate the support seat 24 from the ground. Then the staff can push the ultrasonic detection device to make the wheel 2 roll on the ground and move naturally on the dirt road surface, which is convenient for the staff to quickly move the ultrasonic detection device to the specified position. Then the staff releases the handle 26, and the fixing frame 23 rotates around the wheel 2 until the support seat 24 contacts the ground. Since the dirt ground is not flat, the two sets of wheels 2 may be in a state of one high and one low at this time. The balancing mechanism automatically adjusts the telescopic rod 10 to drive the telescopic rod 10 and the detection mechanism to move, so that the detection mechanism is always It is perpendicular to the ground, which is convenient for the detection mechanism to detect the underground pipeline. Then the staff starts the telescopic rod 10, the telescopic rod 10 extends, and drives the detection mechanism to move to the specified position to detect the underground pipeline. After the detection is completed, the telescopic rod 10 drives the detection mechanism to rise, and the staff moves the detection mechanism to the next detection point to detect the underground pipeline, and repeats this process until the underground pipeline detection is completed. When moving, the ultrasonic detection equipment can ignore the potholes on the bottom surface, can quickly move to the specified position in any environment, and always keep the ultrasonic probe 12 facing the underground pipeline, so as to facilitate the staff to quickly detect the underground pipeline, thereby improving the detection efficiency.

[0031] When the balancing mechanism adjusts the detection mechanism, since the detection mechanism is located below the center of the second movable frame 9, the center of gravity of the telescopic rod 10 and the detection mechanism is located on the detection mechanism and on the center line of the telescopic rod 10. When the contact points of the two sets of wheels 2 with the ground are not located in the same horizontal plane, causing the connecting frame 1 to tilt, the detection mechanism drives the second movable frame 9 to move in the first movable frame 5, drives the matching shaft 6 to rotate in the corresponding matching hole 8, and at the same time, the matching shaft 6 drives the inner ring of the bearing 7 to rotate until the second movable frame 9 is horizontal. At this time, the ultrasonic probe 12 is facing the underground pipeline. When the contact point of the support seat 24 with the ground and the contact point of the wheel 2 with the ground are aligned When the connecting frame 1 is tilted because they are not located in the same plane, the first movable frame 5 rotates in the connecting frame 1, driving the matching shaft 6 to rotate in the corresponding matching hole 8, so that the first movable frame 5 remains horizontal, thereby ensuring that the second movable frame 9 is horizontal and the ultrasonic probe 12 is always facing the underground pipeline; the first movable frame 5 cooperates with the connecting frame 1, and the second movable frame 9 cooperates with the first movable frame 5, and the position of the detection mechanism is adjusted by its own gravity to ensure that the ultrasonic probe 12 is always facing the underground pipeline, and the ultrasonic testing equipment will not be affected by the uneven bottom surface during detection, without the need for staff to spend time adjusting the detection mechanism, thereby improving the efficiency of detection.

[0032] When the detection mechanism detects the underground pipeline, the staff starts the telescopic rod 10, and the telescopic end of the telescopic rod 10 drives the fixed sleeve 11, the ultrasonic probe 12 and the limiting component to move until the ultrasonic probe 12 is close to the soil surface. Then the staff starts the coupling agent suction device to suck the coupling agent from the storage box through the pipeline 22 to the space surrounded by the four groups of movable blocks 15 and the fixed block 13, squeeze out the air, and make the coupling agent fill the gap between the ultrasonic probe 12 and the soil to prevent the ultrasonic wave from propagating in the air, thereby causing its detection result to be inaccurate. Then the ultrasonic probe 12 is started, and the ultrasonic probe 12 sends the detection result to the signal reading device. The staff can judge whether the underground pipeline has defects by watching the signal reading device;

[0033] When there is no gravel at the detection position, the telescopic rod 10 drives the detection mechanism to move downward to the specified position, and the inclined block 21 on the movable block 15 contacts the ground, and the ultrasonic probe 12 and the area around the ground are surrounded by a closed space, ensuring that the coupling agent can fill the gap between the ultrasonic probe 12 and the soil; when there is gravel at the detection position, when the movable block 15 aligned with the gravel contacts the gravel, the corresponding movable block 15 stops moving, and the fixed block 13 continues to drive the remaining several groups of movable blocks 15 to move downward, and the movable blocks 15 in contact with the gravel move relative to the fixed block 13, and the remaining several groups of movable blocks 15 move relative to the fixed block 13. When the fixed block 13 is stationary and moves downward, the fixed block 13 drives the fixed column 18 to move in the corresponding fixed hole 19, compresses the spring 20, and drives the limit block 16 to slide in the limit groove 17 until the remaining groups of movable blocks 15 contact the ground. At this time, the movable blocks 15 contacting the gravel are staggered up and down with the remaining groups of movable blocks 15; when the surface of the detection position contains gravel, the limit assembly can reduce the gap between the limit assembly and the outside world to be too large, thereby preventing the coupling agent from flowing out of the gap between the limit assembly and the ground, resulting in the coupling agent not filling the position between the ultrasonic probe 12 and the movable block 15, thereby reducing the accuracy of the detection result;

[0034] After the detection is completed, the telescopic rod 10 drives the detection mechanism to rise, and the fixed block 13 drives the movable block 15 to move upward. When the movable block 15 is separated from the gravel, the spring 20 extends to drive the movable block 15 to move, and the movable block 15 drives the limit block 16 to move in the limit groove 17 until the spring 20 returns to its initial state. At this time, several groups of movable blocks 15 are horizontally aligned and the limit assembly returns to its initial state.

[0035] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the utility model.

Claims

1. An ultrasonic detection device for underground pipelines, characterized in that: It comprises a connecting frame, rotatable wheels are arranged on both sides of the connecting frame, and a balancing mechanism for ensuring the balance of the ultrasonic probe is arranged on the connecting frame; The balancing mechanism comprises a second movable frame, a telescopic rod is arranged on the second movable frame, a fixed end of the telescopic rod is fixedly connected to the second movable frame, and a detection mechanism for detecting underground pipelines is arranged at the telescopic end of the telescopic rod.

2. The ultrasonic detection device for underground pipelines according to claim 1, characterized in that: The balancing mechanism comprises a first movable frame, two sets of matching shafts are arranged on both sides of the first movable frame and the second movable frame, and bearings are mounted on a plurality of sets of matching shafts, the bearings on the first movable frame are clamped on the connecting frame, and the bearings on the second movable frame are clamped on the first movable frame; The first movable frame can rotate on the connecting frame, and the second movable frame can rotate on the first movable frame. The rotation directions of the first movable frame and the second movable frame are perpendicular.

3. The ultrasonic detection device for underground pipelines according to claim 2 is characterized in that: The detection mechanism comprises an ultrasonic probe, a fixing sleeve is provided at the telescopic end of the telescopic rod, the ultrasonic probe is clamped on the fixing sleeve, and a limiting component is provided on the fixing sleeve; The ultrasonic probe is connected to a signal reading device.

4. The ultrasonic detection device for underground pipelines according to claim 3 is characterized in that: The limiting component comprises a fixing block, the ultrasonic probe is clamped on the fixing block, and the fixing block is fixedly connected to the fixing sleeve; The four vertices of the fixed block are provided with connecting blocks, and a movable block is slidably mounted between every two adjacent groups of the connecting blocks. Limiting blocks are arranged on both sides of the movable block, and the two groups of limiting blocks are respectively slidably mounted on the two adjacent groups of the connecting blocks.

5. The ultrasonic detection device for underground pipelines according to claim 4 is characterized in that: The fixed block is provided with a plurality of groups of fixed columns, and the movable blocks are each provided with two groups of fixed holes, and the fixed columns are respectively installed in the fixed holes. A spring is sleeved on the fixing column, and two ends of the spring are respectively in contact with the fixing block and the bottom surface of the fixing hole.

6. The ultrasonic detection device for underground pipelines according to claim 5, characterized in that: The fixing block is provided with a pipeline, and a coupling agent suction device is provided at the other end of the pipeline. The coupling agent suction device is located in a storage box, and the storage box is filled with coupling agent.

7. The ultrasonic detection device for underground pipelines according to claim 6, characterized in that: The connecting frame is fixedly connected to a fixing frame, and the fixing frame is provided with two groups of supporting seats; The fixing frame is provided with two groups of matching rods, and both groups of matching rods are provided with handles.

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