Steel pipe staggered joint measuring device

Abstract

The utility model discloses a steel pipe staggered joint measuring device and a using method, the steel pipe staggered joint measuring device comprises two magnetic cushion blocks, a same level ruler is placed between the top ends of the two magnetic cushion blocks, the two magnetic cushion blocks are both barrel-shaped structures with openings at the top ends, the inner sides of the two magnetic cushion blocks are connected with an adjusting mechanism, and the adjusting mechanism is connected with the same level ruler. A measuring mechanism is fixed in the middle of the leveling instrument, and a leveling tube is axially fixed on the surface of the leveling instrument. During measurement, the levelness of the horizontal ruler is adjusted through the adjusting mechanism to enable the horizontal ruler to be horizontal to form a datum plane, then the measuring rulers slide to enable the bottom ends of the measuring rulers to make contact with the steel pipe, and at the moment, the scale difference between the two measuring rulers is the offset distance of the staggered joint of the steel pipe. The device performs measurement on the outer side of the steel pipe, and the problem that an existing measurement mode is large in error is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe detection devices and relates to a steel pipe staggered seam measuring device. Background Art

[0002] In the construction of water supply steel pipe projects, due to the difficulty in transporting and lifting steel pipes, the length of steel pipes is usually not too long. In actual use, pipe welding is required at the construction site. Before and after the pipe welding, the welds of the two steel pipes need to be inspected to ensure that the two steel pipes remain on the same axis. The standards for the staggered seams of water supply pipelines are relatively strict, but the internal space of the steel pipe is small, the dust is heavy, the temperature is high, and the light is dim, making it too difficult to detect the staggered seams of the steel pipes. Therefore, measurements are generally made from the outside of the steel pipe. In actual construction, a ruler or other flat object is usually used to press against one side of the steel pipe, and the height difference between the ruler and the other side of the steel pipe is observed to obtain the positional relationship between the two steel pipes. This measurement method cannot produce accurate measurement data. Utility Model Content

[0003] The utility model aims to provide a steel pipe staggered seam measuring device, which solves the problem of large error of the existing measuring device.

[0004] The technical solution adopted by the utility model is a steel pipe staggered seam measuring device, comprising two magnetic pads, a same level ruler is placed between the top ends of the two magnetic pads, both of the two magnetic pads are barrel-shaped structures with openings located at the top ends, the inner sides of the two magnetic pads are respectively connected with adjustment mechanisms, a measuring mechanism is fixed in the middle of the level ruler, and a level tube is fixed to the surface of the level ruler along the axial direction.

[0005] The utility model is also characterized in that:

[0006] The adjustment mechanism includes an adjustment rod that passes into the inner side of the magnetic pad along the top opening of the magnetic pad, the top of the adjustment rod abuts against the level ruler, a conical groove is provided on the side of the adjustment rod, the surface where the groove is located does not contact the inner wall of the magnetic pad, a threaded through hole is provided on the surface of the magnetic pad, an adjustment bolt is passed through the threaded through hole, and one end of the adjustment bolt is fixedly connected to a locking block that matches the groove.

[0007] The measuring mechanism includes several fixed frames fixed in the middle of the level ruler, the fixed frames are penetrated by a measuring ruler perpendicular to the level ruler, the sides at both ends of the measuring ruler are fixedly connected to limit blocks, each fixed frame is fixedly connected to a measuring pointer close to the measuring ruler, and a scale is provided on the side of the measuring ruler corresponding to the measuring pointer.

[0008] The tops of the magnetic pads are all fixed with elastic pressing sheets, all of which are arch-shaped, and the level rulers pass through all the elastic pressing sheets.

[0009] The bottom ends of the two magnetic pads are concave arc surfaces.

[0010] The groove and the locking block are both in a cone shape, and the distance between the surface where the groove is located and the inner wall of the magnetic pad is smaller than the height of the locking block.

[0011] The beneficial effects of the utility model are:

[0012] 1. The utility model of the steel pipe staggered seam measuring device sets a reference line and then uses a measuring ruler to obtain the offset distance of the staggered seam of the steel pipe to be measured, so as to quickly and accurately determine the relative position of the steel pipe. At the same time, this method is simple to operate and can obtain accurate data, which is convenient for subsequent adjustment work.

[0013] 2. The steel pipe staggered seam measuring device of the utility model realizes the rise and fall of the adjusting rod by pushing the locking block through the adjusting bolt. While ensuring the stability of the adjusting rod through the self-locking property of the adjusting bolt, the height of the adjusting rod can be adjusted more precisely through the bolt, thereby ensuring the horizontality of the spirit level and obtaining a more accurate measurement result. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model steel pipe staggered seam measuring device;

[0015] Figure 2 It is a top view of the steel pipe staggered seam measuring device of the utility model;

[0016] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of a magnetic pad in a steel pipe staggered seam measuring device.

[0017] In the figure: 1. magnetic pad; 2. spirit level; 3. level tube; 4. adjusting rod; 5. groove; 6. adjusting bolt; 7. locking block; 8. fixing frame; 9. measuring ruler; 10. limit block; 11. measuring pointer; 12. elastic pressure piece; 13. adjusting mechanism; 14. measuring mechanism. DETAILED DESCRIPTION

[0018] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0019] Embodiment 1:

[0020] like Figure 1 and Figure 2As shown, it includes two magnetic pads 1, and a same level 2 is placed between the top ends of the two magnetic pads 1. The level 2 is used to provide a reference surface for the measurement process, so as to measure the offset between the staggered joints. The two magnetic pads 1 are both barrel-shaped structures with openings located at the top ends. Adjustment mechanisms 14 are respectively connected to the inner sides of the two magnetic pads 1 for adjusting the horizontality of the level 2. A measuring mechanism 13 is fixed to the middle of the level 2 for measuring the distance between the level 2 and the measured object. A level tube 3 is fixed to the surface of the level 2 along the axial direction. The level tube 3 is used to observe the horizontality of the level 2 to prevent the level 2 from affecting the measurement result due to its own inclination.

[0021] Embodiment 2:

[0022] Based on Example 1:

[0023] like Figure 1 As shown, the measuring mechanism 13 includes a plurality of fixed frames 8 fixed in the middle of the level ruler 2, the fixed frame 8 is penetrated by a measuring ruler 9 perpendicular to the level ruler 2, and the side surfaces at both ends of the measuring ruler 9 are fixedly connected with limit blocks 10, and the limit blocks 10 can prevent the measuring ruler 9 from escaping from the fixed frame 8 and affecting the progress of the measurement work, and a measuring pointer 11 is fixedly connected to each fixed frame 8 in close contact with the measuring ruler 9, which is used to help the staff to accurately read the scale corresponding to the measuring ruler 9 and improve the accuracy of the measurement result, and a scale is provided on the side corresponding to the measuring ruler 9 and the measuring pointer 11.

[0024] The measuring mechanism 13 obtains relevant data through the height difference between the two measuring rulers 9. The operation method is simple and the joint offset between the steel pipes can be measured quickly.

[0025] Embodiment 2:

[0026] Based on Example 1:

[0027] like Figure 2 As shown, an elastic pressing plate 12 is fixed to the top of the magnetic pad 1, and the elastic pressing plate 12 is arch-shaped. The level 2 passes through the arch structure formed by the elastic pressing plate 12 and the magnetic pad 1, and the level 2 is located between the elastic pressing plate 12 and the adjusting rod 4. During the use of the device, the elastic pressing plate 12 is always in an extended state, and is used to fix the level 2 on the top of the magnetic pad 1. At the same time, since the elastic pressing plate 12 has a certain elasticity, it can be used to reset the adjusting rod 4.

[0028] like Figure 1 As shown, the bottom ends of the two magnetic pads 1 are concave arc surfaces, and their curvature is consistent with the curvature of the outer surface of the steel pipe to be tested, ensuring that the magnetic pads 1 are stably connected to the steel pipe to be tested and preventing the magnetic pads 1 from shaking and affecting the readings of the staff.

[0029] Embodiment three:

[0030] Based on Example 1:

[0031] like Figure 3 As shown, the adjustment mechanism 14 includes an adjustment rod 4 which is passed into the inner side of the magnetic pad 1 along the top opening of the magnetic pad 1, the top of the adjustment rod 4 is in contact with the level 2, and a conical groove 5 is provided on the side of the adjustment rod 4. The surface where the groove 5 is located does not contact the inner wall of the magnetic pad 1, and space is reserved for the movement of the locking block 7. A threaded through hole is provided on the surface of the magnetic pad 1, and an adjusting bolt 6 is passed through the threaded through hole. A locking block 7 matching the groove 5 is fixedly connected to one end of the adjusting bolt 6. The height of the adjustment rod 4 can be changed by controlling the position of the locking block 7 in the groove 5 by adjusting the bolt 6, thereby adjusting the horizontality of the level 2. At the same time, the threaded connection has self-locking properties, which can prevent the height of the adjustment rod 4 from changing due to external forces, thereby affecting the horizontality of the level 2.

[0032] like Figure 3 As shown, the groove 5 and the locking block 7 are both conical. The locking block 7 and the groove 5 are both conical, which can ensure that the locking block 7 runs smoothly in the groove 5, making the adjustment of the horizontality of the level ruler 2 smoother. The distance between the surface where the groove 5 is located and the inner wall of the magnetic pad 1 is smaller than the height of the locking block 7. By limiting the stroke of the locking block 7, it can prevent the locking block 7 from escaping from the groove 5 during the adjustment process, so that the adjusting rod 4 moves downward under the action of the elastic pressing sheet 12, resulting in the locking block 7 being unable to dock with the groove 5, affecting the normal use of the device.

[0033] The utility model converts the horizontal rotation of the adjusting bolt 6 into the vertical movement of the adjusting rod 4 through the cooperation of the groove 5 and the locking block 7, thereby changing the height of the two ends of the level ruler 2 for leveling. Bolt adjustment can make the adjustment more precise, reduce the error of the horizontality of the level ruler 2, provide better measurement conditions for the measuring mechanism 13, and make the measurement result more accurate. At the same time, the bolt connection has self-locking properties, which can prevent the adjusting rod 4 from being affected by external forces and falling during the measurement process, thereby destroying the horizontal state of the level ruler 2.

[0034] The use process of the utility model is as follows:

[0035] First, place the steel pipe to be tested horizontally, and then place two magnetic pads 1 on the steel pipe to be tested along the axial direction of the steel pipe to be tested, so that the connection seam is located between the two magnetic pads 1, and ensure that the two magnetic pads 1 are located on the same straight line parallel to the axis of the steel pipe to be tested. At the same time, a measuring ruler 9 is set on both sides of each connection seam, and the bottom end of the magnetic pad 1 is fitted with the surface of the steel pipe, and then the adjusting bolt 6 is turned;

[0036] When the adjusting bolt 6 is screwed into the magnetic pad 1, the locking block 7 moves into the groove 5, and its upper surface contacts the groove 5, pushing the adjusting rod 4 to move upward;

[0037] When the adjusting bolt 6 is screwed out from the magnetic spacer 1 , the locking block 7 moves away from the groove 5 , and then the adjusting rod 4 moves downward under the pressure of the elastic pressing sheet 12 .

[0038] When turning the adjusting bolt 6, observe the position of the bubble in the level tube 3 until the bubble in the level tube 3 moves to the center, and adjust the adjusting rod 4 to make the level ruler 2 horizontal. Then slide the measuring ruler 9 to make the bottom end of the measuring ruler 9 contact the surface of the steel pipe to be measured, and then read the data indicated by the measuring pointer 11. The difference between the data of the measuring ruler 9 on both sides of the joint is the offset distance of the joint seam of the steel pipe.

Claims

1. Steel pipe staggered seam measuring device, characterized in that: The invention comprises two magnetic pads (1), wherein a same level ruler (2) is placed between the top ends of the two magnetic pads (1), and the two magnetic pads (1) are both barrel-shaped structures with openings located at the top ends. Adjustment mechanisms (14) are respectively connected to the inner sides of the two magnetic pads (1), a measuring mechanism (13) is fixed in the middle of the level ruler (2), and a level tube (3) is fixed axially on the surface of the level ruler (2).

2. The steel pipe staggered measurement device according to claim 1, characterized in that: The adjustment mechanism (14) comprises an adjustment rod (4) extending along the top opening of the magnetic pad (1) and passing into the inner side of the magnetic pad (1); the top of the adjustment rod (4) abuts against the level ruler (2); a conical groove (5) is provided on the side of the adjustment rod (4); the surface where the groove (5) is located does not contact the inner wall of the magnetic pad (1); a threaded through hole is provided on the surface of the magnetic pad (1); an adjustment bolt (6) is passed through the threaded through hole; one end of the adjustment bolt (6) is fixedly connected to a locking block (7) matching the groove (5).

3. The steel pipe staggered measurement device according to claim 1, characterized in that: The measuring mechanism (13) comprises a plurality of fixed frames (8) fixed to the middle of the level ruler (2), the fixed frames (8) being provided with a measuring ruler (9) perpendicular to the level ruler (2), the side surfaces of both ends of the measuring ruler (9) being fixedly connected to limit blocks (10), each of the fixed frames (8) being fixedly connected to the measuring ruler (9) with a measuring pointer (11), and a scale being provided on a side of the measuring ruler (9) corresponding to the measuring pointer (11).

4. The steel pipe staggered measurement device according to claim 1, characterized in that: The top of each magnetic pad (1) is fixed with an elastic pressing sheet (12), each of the elastic pressing sheets (12) is arched, and the level (2) passes through all the elastic pressing sheets (12).

5. The steel pipe staggered measurement device according to claim 1, characterized in that: The bottom ends of the two magnetic pads (1) are concave arc surfaces.

6. The steel pipe staggered measurement device according to claim 2, characterized in that: The groove (5) and the locking block (7) are both conical in shape, and the distance between the surface where the groove (5) is located and the inner wall of the magnetic pad (1) is smaller than the height of the locking block (7).

Images