A flatness detection mechanism

Abstract

The utility model belongs to parallelism detection technical field especially relates to a kind of flatness detection mechanism, first clamping plate is equipped with first shaft hole, second clamping plate is equipped with second shaft hole, shaft body is rotatably installed in first shaft hole, second clamping plate is fixedly installed on shaft body by second shaft hole, torsional spring is sleeved on shaft body, and the opposite two torsional arms of torsional spring are respectively with first clamping plate and second clamping plate abut;Second clamping plate is equipped with first sliding slot, supporting assembly is equipped with first sliding block, and first sliding block is slidably installed in first sliding slot;Flatness measuring instrument is installed on supporting assembly;First clamping plate is used to install in the radial side of first to be measured flange, second clamping plate is used to abut with the circumferential arc surface of first to be measured flange, and flatness measuring instrument is used to measure the flatness between first to be measured flange and second to be measured flange.The utility model is convenient for the detection operation of the flatness detection mechanism, and measurement precision is high.

Description

Technical Field

[0001] This utility model belongs to the field of parallelism detection technology, and in particular relates to a parallelism detection mechanism. Background Technology

[0002] Pipelines are common media transport components in nuclear power plants. Adjacent pipelines are usually connected by flange mechanisms. Multiple through holes are provided around the flanges, and bolts are inserted into the through holes to achieve a fixed connection between adjacent flanges.

[0003] During flange installation, the tightening depth of each of the multiple bolts required for circumferential installation, as well as the consistency of the tightening depths across all bolts, affects the quality of the flange assembly. If one or more bolts are tightened individually, or if the tightening depths of the bolts are inconsistent, some bolts may be damaged or jammed, hindering the flange assembly. Furthermore, if the bolts are not tightened at the same parallel depth, some areas may warp after installation, failing to meet the fit requirements for applications with high flange surface fit demands (such as waterproofing).

[0004] In existing technology, workers need to carefully tighten each bolt multiple times to ensure that the depth of each bolt remains consistent during each tightening round, thus ensuring that the mounting surfaces of the flange structure are as parallel as possible. Workers use manual calipers for multiple checks, and after each round of bolt tightening, they manually check the flatness between the two flange mounting surfaces using a level. If the flatness is found to be unacceptable, the bolt tightening depth is adjusted until the flatness between the two flanges meets the requirements as indicated by the level.

[0005] Because the circumferential plane of the flange is an arc surface, the level cannot be fixed on the flange. Therefore, the level needs to be fixed on the flange manually. Moreover, when adjusting the tightening depth of the bolts, the level also needs to be kept fixed on the flange, which presents a complex technical problem. In addition, the level is prone to displacement on the flange when manually straightened, which also presents a technical problem of low detection accuracy. Summary of the Invention

[0006] This invention addresses the technical problems of inconvenient operation and low detection accuracy when manually fixing a level to a flange in the prior art, and provides a flatness detection mechanism.

[0007] In view of the above technical problems, this utility model provides a flatness detection mechanism, including a first clamping plate, a second clamping plate, a shaft, a torsion spring, a support assembly, and a flatness measuring instrument; The first clamping plate is provided with a first shaft hole, and the second clamping plate is provided with a second shaft hole. The shaft is rotatably installed in the first shaft hole, and the second clamping plate is fixedly installed on the shaft through the second shaft hole. The torsion spring is sleeved on the shaft, and the two opposite torsion arms of the torsion spring abut against the first clamping plate and the second clamping plate respectively. The second clamping plate is provided with a first sliding groove, and the support assembly is provided with a first slider, which is slidably installed in the first sliding groove; the flatness measuring instrument is installed on the support assembly; The first clamping plate is used to be installed on the radial side of the first flange to be tested, the second clamping plate is used to abut against the circumferential arc surface of the first flange to be tested, and the flatness measuring instrument is used to measure the flatness between the first flange to be tested and the second flange to be tested.

[0008] Optionally, the first clamping plate is provided with angle scale lines, which are arranged around the first shaft hole; The flatness detection mechanism also includes a pointer mounted on the shaft, the pointer pointing to the angle scale line.

[0009] Optionally, the first clamping plate is provided with a first threaded hole, the second clamping plate is provided with a second threaded hole, and the flatness detection mechanism further includes a first bolt and a second bolt; The first bolt is threaded into the first threaded hole, and the first bolt is used to abut against the radial side of the first flange to be tested; The second bolt is threaded into the second threaded hole, and the second bolt is used to abut against the circumferential arc surface of the first flange to be tested.

[0010] Optionally, the first clamping plate is provided with a first friction surface, and the second clamping plate is provided with a second friction surface; The first friction surface is used to fit against the radial side of the first flange to be tested, and the second friction surface is used to fit against the circumferential arc surface of the first flange to be tested.

[0011] Optionally, the first clamping plate is provided with a first groove, and the flatness detection mechanism further includes a first magnet block installed in the first groove; the first magnet block is used to magnetically attract the radial side of the first flange to be tested.

[0012] Optionally, the second clamping plate is provided with a plurality of first limiting grooves, which are spaced apart along the length direction of the first sliding groove; the support assembly is provided with a first elastic protrusion; the first elastic protrusion is inserted into the first limiting groove.

[0013] Optionally, the support assembly includes a support base and a telescopic frame, and the first slider is disposed on the support base; The support base is also provided with a second sliding groove, and the telescopic frame is provided with a second slider, which is slidably inserted into the second sliding groove; the length direction of the first sliding groove is perpendicular to the length direction of the second sliding groove. The flatness measuring instrument is mounted on the telescopic frame.

[0014] Optionally, the support base is provided with a plurality of second limiting grooves, which are spaced apart along the length direction of the second slide groove; the second slider is provided with a second elastic protrusion; the second elastic protrusion is inserted into the second limiting groove.

[0015] Optionally, the telescopic frame includes a first rod, a second rod, a third rod, and a support block; the first rod has a first inner hole, the second rod is slidably inserted into the first inner hole, and the end of the first rod away from the second rod has a second slider; The third rod is connected to the second rod, the first rod and the second rod are coaxially arranged, and the second rod is perpendicular to the third rod; The support block is installed at the end of the third rod away from the second rod, and the flatness measuring instrument is installed on the support block.

[0016] Optionally, the flatness measuring instrument is a laser measuring instrument or a dial indicator.

[0017] In this invention, the first clamping plate is on the radial side of the first flange to be tested. The second clamping plate is rotated until it meets the circumferential arc surface of the first flange to be tested. The torsional elastic force of the torsion spring clamps the first and second clamping plates onto the first flange to be tested. The first slider of the support assembly is slidably installed in the first groove of the second clamping plate. The flatness measuring instrument is installed on the support assembly. By sliding the support assembly on the second clamping plate, the flatness measuring instrument can move on the circumferential arc surface of the first and second flanges to be tested, thus measuring the flatness between them. When tightening the bolts between the first and second flanges to be tested, the first and second clamping plates are always clamped onto the first flange to be tested. Furthermore, by simply sliding the support assembly, the flatness measuring instrument can detect the flatness between the first and second flanges to be tested in real time. This flatness detection mechanism is convenient to operate and has high measurement accuracy. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the flatness detection mechanism provided in one embodiment of the present invention; Figure 2 This is an exploded structural diagram of a flatness detection mechanism provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the flatness measuring instrument installed on a support assembly according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the flatness measuring instrument installed on a telescopic frame according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the flatness detection mechanism provided in one embodiment of the present invention, installed on the first flange to be tested and the second flange to be tested.

[0020] The reference numerals in the accompanying drawings are as follows: 1. Flatness detection mechanism; 11. First clamping plate; 111. First shaft hole; 112. Angle scale line; 113. First threaded hole; 114. First groove; 12. Second clamping plate; 121. Second shaft hole; 122. First slide groove; 123. Second threaded hole; 124. First limiting groove; 13. Shaft body; 131. Pointer; 14. Torsion spring; 15. Support assembly; 151. First slider; 152. First elastic protrusion; 153. Support base; 153 1. Second slide groove; 1532. Second limiting groove; 154. Telescopic frame; 1541. Second slider; 1542. Second elastic protrusion; 1543. First rod; 1544. Second rod; 1545. Third rod; 1546. Support block; 16. Flatness measuring instrument; 17. First bolt; 18. Second bolt; 19. First magnet block; 2. First flange to be tested; 21. Radial side; 22. Circumferential arc surface; 3. Second flange to be tested. Detailed Implementation

[0021] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0022] It should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.

[0023] like Figure 1 , Figure 2 as well as Figure 5As shown, a flatness testing mechanism 1 provided in one embodiment of the present invention includes a first clamping plate 11, a second clamping plate 12, a shaft 13, a torsion spring 14, a support assembly 15, and a flatness measuring instrument 16. The first clamping plate 11 is provided with a first shaft hole 111, the second clamping plate 12 is provided with a second shaft hole 121, the shaft body 13 is rotatably installed in the first shaft hole 111, the second clamping plate 12 is fixedly installed on the shaft body 13 through the second shaft hole 121, the torsion spring 14 is sleeved on the shaft body 13, and the two opposite torsion arms of the torsion spring 14 abut against the first clamping plate 11 and the second clamping plate 12 respectively; The second clamping plate 12 is provided with a first sliding groove 122, and the support assembly 15 is provided with a first slider 151, which is slidably installed in the first sliding groove 122; the flatness measuring instrument 16 is installed on the support assembly 15. The first clamping plate 11 is used to be installed on the radial side 21 of the first flange to be tested 2, the second clamping plate 12 is used to abut against the circumferential arc surface 22 of the first flange to be tested 2, and the flatness measuring instrument 16 is used to measure the flatness between the first flange to be tested 2 and the second flange to be tested 3.

[0024] The flatness measuring instrument 16 includes, but is not limited to, dial gauges, laser measuring instruments, etc., and multiple torsion springs 14 can be set according to actual needs.

[0025] In this invention, the first clamping plate 11 is aligned with the radial side 21 of the first flange 2 to be tested. The second clamping plate 12 is rotated until it aligns with the circumferential arc surface 22 of the first flange 2 to be tested. The torsional elastic force of the torsion spring 14 clamps the first clamping plate 11 and the second clamping plate 12 onto the first flange 2 to be tested. The first slider 151 of the support assembly 15 is slidably installed in the first groove 122 of the second clamping plate 12. The flatness measuring instrument 16 is mounted on the support assembly 15. By sliding the support assembly 15 on the second clamping plate 12, the flatness measuring instrument 16 can... The flatness measuring instrument 16 can move on the circumferential arc surface 22 of the first flange 2 and the circumferential arc surface 22 of the second flange 3, so that the flatness measuring instrument 16 can measure the flatness between the first flange 2 and the second flange 3. When tightening the bolts between the first flange 2 and the second flange 3, the first clamping plate 11 and the second clamping plate 12 are always clamped on the first flange 2. The flatness measuring instrument 16 can detect the flatness between the first flange 2 and the second flange 3 in real time simply by sliding the support assembly 15. The flatness detection mechanism 1 is convenient to operate and has high measurement accuracy.

[0026] To further explain, when the flatness testing mechanism 1 is in a free state, the included angle between the first clamping plate 11 and the second clamping plate 12 is an acute angle; when the flatness testing mechanism 1 is installed on the first flange to be tested 2, the included angle between the first clamping plate 11 and the second clamping plate 12 is a support leg.

[0027] In one embodiment, such as Figure 1 and Figure 2 As shown, the first clamping plate 11 is provided with an angle scale line 112, which is arranged around the first shaft hole 111; The flatness detection mechanism 1 also includes a pointer 131 mounted on the shaft 13, the pointer 131 pointing to the angle scale line 112.

[0028] Specifically, during the rotation of the second clamping plate 12, the first shaft 13 will drive the pointer 131 to rotate, and the pointer 131 will point to the angle scale line 112. The operator can obtain the included angle between the first clamping plate 11 and the second clamping plate 12 through the pointer 131. In particular, when the first clamping plate 11 and the second clamping plate 12 are installed on the first flange to be tested 2, the pointer 131 can ensure that the included angle between the first clamping plate 11 and the second clamping plate 12 is 90 degrees, which further ensures the detection accuracy of the flatness detection mechanism 1.

[0029] In one embodiment, such as Figure 1 and Figure 2 As shown, the first clamping plate 11 is provided with a first threaded hole 113, the second clamping plate 12 is provided with a second threaded hole 123, and the flatness detection mechanism 1 also includes a first bolt 17 and a second bolt 18. The first bolt 17 is threaded into the first threaded hole 113, and the first bolt 17 is used to abut against the radial side 21 of the first flange to be tested 2. The second bolt 18 is threaded into the second threaded hole 123, and the second bolt 18 is used to abut against the circumferential arc surface 22 of the first flange to be tested 2.

[0030] Specifically, when the first clamping plate 11 and the second clamping plate 12 clamp the first flange 2 to be tested, by adjusting the depth of the first bolt 17 inserted into the first threaded hole 113, the first bolt 17 can be pressed against the radial side 21 of the first flange 2 to be tested. By adjusting the depth of the second bolt 18 inserted into the second threaded hole 123, the second bolt 18 can be pressed against the circumferential arc surface 22 of the first flange 2 to be tested.

[0031] In this embodiment, the design of the first bolt member 17 and the second bolt member 18 further ensures the stability of the first clamping plate 11 and the second clamping plate 12 clamped on the first flange to be tested 2.

[0032] In one embodiment, the first clamping plate 11 is provided with a first friction surface (not shown in the figure), and the second clamping plate 12 is provided with a second friction surface (not shown in the figure). The first friction surface is used to fit against the radial side surface 21 of the first flange to be tested 2, and the second friction surface is used to fit against the circumferential arc surface 22 of the first flange to be tested 2.

[0033] In this embodiment, the first friction surface increases the friction between the first clamping plate 11 and the radial side surface 21 of the first flange to be tested 2; the second friction surface increases the friction between the second clamping plate 12 and the circumferential arc surface 22 of the first flange to be tested 2. The design of the first friction surface and the second friction surface further ensures the stability of the first clamping plate 11 and the second clamping plate 12 clamped on the first flange to be tested 2.

[0034] In one embodiment, such as Figure 1 and Figure 2 As shown, the first clamping plate 11 is provided with a first groove 114, and the flatness detection mechanism 1 further includes a first magnet block 19 installed in the first groove 114; the first magnet block 19 is used to magnetically attract the radial side 21 of the first flange to be tested 2.

[0035] Since the first flange to be tested 2 is usually a magnetic component, the first clamping plate 11 can be magnetically attached to the radial side 21 of the first flange to be tested by the first magnet block 19, which improves the ease of disassembly and assembly between the first clamping plate 11 and the radial side 21 of the first flange to be tested 2.

[0036] In one embodiment, such as Figure 1 As shown, the second clamping plate 12 is provided with a plurality of first limiting grooves 124, and the plurality of first limiting grooves 124 are distributed at intervals along the length direction of the first sliding groove 122; the support assembly 15 is provided with a first elastic protrusion 152; the first elastic protrusion 152 is inserted into the first limiting groove 124.

[0037] Specifically, during the sliding of the first slider 151 in the first groove 122, the first elastic protrusion 152 is inserted into different first limiting grooves 124; and the first elastic protrusion 152 inserted into the first limiting groove 124 can fix the support assembly 15 in the current position of the second clamping plate 12, ensuring the stability of the support assembly 15 installed on the second clamping plate 12.

[0038] In one embodiment, such as Figure 1 , Figure 3 as well as Figure 4 As shown, the support assembly 15 includes a support base 153 and a telescopic frame 154, and the first slider 151 is disposed on the support base 153; The support base 153 is also provided with a second slide groove 1531, and the telescopic frame 154 is provided with a second slider 1541. The second slider 1541 is slidably inserted into the second slide groove 1531; the length direction of the first slide groove 122 is perpendicular to the length direction of the second slide groove 1531. The flatness measuring instrument 16 is mounted on the telescopic frame 154.

[0039] The first slider 151 and the first elastic protrusion 152 are both located at the bottom of the support base 153. The telescopic frame 154 can adjust the distance between the flatness measuring instrument 16 and the second clamping plate 12, so that the flatness measuring instrument 16 can measure the flatness between the first flange to be tested 2 and the second flange to be tested 3.

[0040] In one embodiment, such as Figure 3 As shown, the support base 153 is provided with a plurality of second limiting grooves 1532, and the plurality of second limiting grooves 1532 are distributed at intervals along the length direction of the second sliding groove 1531; the second slider 1541 is provided with a second elastic protrusion 1542; the second elastic protrusion 1542 is inserted into the second limiting groove 1532.

[0041] Specifically, during the sliding process of the second slider 1541 in the second slide groove 1531, the second elastic protrusion 1542 is inserted into different second limiting grooves 1532; and the second elastic protrusion 1542 inserted into the second limiting groove 1532 can fix the telescopic frame 154 in the current position of the support base 153, ensuring the stability of the telescopic frame 154 installed on the support base 153.

[0042] In one embodiment, such as Figure 3 and Figure 4 As shown, the telescopic frame 154 includes a first rod 1543, a second rod 1544, a third rod 1545, and a support block 1546; the first rod 1543 is provided with a first inner hole, the second rod 1544 is slidably inserted into the first inner hole, and the end of the first rod 1543 away from the second rod 1544 is provided with a second slider 1541; The third rod 1545 is connected to the second rod 1544. The first rod 1543 and the second rod 1544 are coaxially arranged, and the second rod 1544 is perpendicular to the third rod 1545. The support block 1546 is installed at the end of the third rod 1545 away from the second rod 1544, and the flatness measuring instrument 16 is installed on the support block 1546.

[0043] The first rod 1543 is perpendicular to the second clamping plate 12; the flatness measuring instrument 16 can be fixedly installed on the support block 1546 by screws, bolts, etc.

[0044] In this embodiment, the lengths of the first rod 1543 and the second rod 1544 are adjusted by adjusting the depth of the second rod 1544 inserted into the first inner hole, thereby adjusting the distance between the flatness measuring instrument 16 and the second clamping plate 12. In this embodiment, the support assembly 15 has a simple structure, low cost, and convenient operation.

[0045] The above are merely embodiments of the flatness testing mechanism of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flatness detection mechanism, characterized in that, Includes a first clamping plate, a second clamping plate, a shaft, a torsion spring, a support assembly, and a flatness measuring instrument; The first clamping plate is provided with a first shaft hole, and the second clamping plate is provided with a second shaft hole. The shaft is rotatably installed in the first shaft hole, and the second clamping plate is fixedly installed on the shaft through the second shaft hole. The torsion spring is sleeved on the shaft, and the two opposite torsion arms of the torsion spring abut against the first clamping plate and the second clamping plate respectively. The second clamping plate is provided with a first sliding groove, and the support assembly is provided with a first slider, which is slidably installed in the first sliding groove; the flatness measuring instrument is installed on the support assembly; The first clamping plate is used to be installed on the radial side of the first flange to be tested, the second clamping plate is used to abut against the circumferential arc surface of the first flange to be tested, and the flatness measuring instrument is used to measure the flatness between the first flange to be tested and the second flange to be tested.

2. The flatness detection mechanism according to claim 1, characterized in that, The first clamping plate is provided with angle scale lines, which are arranged around the first shaft hole; The flatness detection mechanism also includes a pointer mounted on the shaft, the pointer pointing to the angle scale line.

3. The flatness detection mechanism according to claim 1, characterized in that, The first clamping plate is provided with a first threaded hole, the second clamping plate is provided with a second threaded hole, and the flatness detection mechanism further includes a first bolt and a second bolt; The first bolt is threaded into the first threaded hole, and the first bolt is used to abut against the radial side of the first flange to be tested; The second bolt is threaded into the second threaded hole, and the second bolt is used to abut against the circumferential arc surface of the first flange to be tested.

4. The flatness detection mechanism according to claim 1, characterized in that, The first clamping plate is provided with a first friction surface, and the second clamping plate is provided with a second friction surface; The first friction surface is used to fit against the radial side of the first flange to be tested, and the second friction surface is used to fit against the circumferential arc surface of the first flange to be tested.

5. The flatness detection mechanism according to claim 1, characterized in that, The first clamping plate is provided with a first groove, and the flatness detection mechanism further includes a first magnet block installed in the first groove; the first magnet block is used to magnetically attract the radial side of the first flange to be tested.

6. The flatness detection mechanism according to claim 1, characterized in that, The second clamping plate is provided with a plurality of first limiting grooves, which are spaced apart along the length direction of the first sliding groove; the support assembly is provided with a first elastic protrusion; the first elastic protrusion is inserted into the first limiting groove.

7. The flatness detection mechanism according to claim 1, characterized in that, The support assembly includes a support base and a telescopic frame, and the first slider is disposed on the support base; The support base is also provided with a second sliding groove, and the telescopic frame is provided with a second slider, which is slidably inserted into the second sliding groove; the length direction of the first sliding groove is perpendicular to the length direction of the second sliding groove. The flatness measuring instrument is mounted on the telescopic frame.

8. The flatness detection mechanism according to claim 7, characterized in that, The support base is provided with a plurality of second limiting grooves, which are spaced apart along the length of the second slide groove; the second slider is provided with a second elastic protrusion; the second elastic protrusion is inserted into the second limiting groove.

9. The flatness detection mechanism according to claim 7, characterized in that, The telescopic frame includes a first rod, a second rod, a third rod, and a support block; the first rod has a first inner hole, the second rod is slidably inserted into the first inner hole, and the end of the first rod away from the second rod has a second slider; The third rod is connected to the second rod, the first rod and the second rod are coaxially arranged, and the second rod is perpendicular to the third rod; The support block is installed at the end of the third rod away from the second rod, and the flatness measuring instrument is installed on the support block.

10. The flatness detection mechanism according to claim 1, characterized in that, The flatness measuring instrument is a laser measuring instrument or a dial indicator.

Images