Gauge for linear inspection of large casting

Abstract

The utility model relates to the technical field of ship casting detection, and particularly discloses a gauge for linear inspection of a large casting, which comprises a plurality of segments of gauges, two adjacent segments of gauges are detachably connected, and the plurality of segments of gauges form a gauge group after being detachably connected; the outer contour of the checking fixture group is used for fitting the outer contour of the stem and checking whether the line shape of the outer contour of the stem meets the standard size or not; a reinforcing rib is fixedly mounted on each section of the checking fixture, one side of the reinforcing rib is fixedly mounted on one section of the checking fixture, and the other side of the reinforcing rib is attached to the other section of the checking fixture adjacent to the one section of the checking fixture; wherein the length of the shortest section of the testing fixture is not less than 1000mm. According to the utility model, the detection precision of the cast stem can be improved.

Description

Technical Field

[0001] This utility model relates to the field of ship bow inspection technology, and in particular to an inspection tool for inspecting the line shape of large castings. Background Technology

[0002] In the construction of the bow of large ships, the bow is a critical structural component located at the very front of the hull. It is a vital supporting structure for the bow section and has a crucial impact on the ship's navigation performance. The design and manufacture of the bow must take into account the various forces it will withstand during wave-cutting and icebreaking operations. Precise bow casting lines ensure smooth movement in the water, reduce wave resistance, and optimize hydrodynamic performance. This also contributes to improved stability and maneuverability, ensuring navigational safety. Any deviation can lead to performance degradation, increased fuel consumption, and potential safety hazards; therefore, rigorous bow casting line checks are a crucial step in ensuring the efficient and safe operation of the ship.

[0003] Because the bow is easily deformed after casting, its linear shape and dimensions are difficult to inspect, requiring the fabrication of large-scale inspection tools to check the linear shape of the bow's outer contour. In existing technology, there are two main types of large-scale inspection tools for bows: integral tools and segmented tools.

[0004] like Figure 1 As shown, an integral inspection fixture 3 is used to perform a linear inspection on the inspection area 2 of the outer contour of the bow 1. This integral inspection fixture 3 is at least 7 meters long, and its end is rounded. According to the standard for target inspection fixtures, the width of the fixture is generally not less than 150 mm and the thickness is not less than 5 mm. Because this integral inspection fixture 3 is designed as a single unit, the inspection accuracy is high in the early stages of use. However, after repeated use, due to its small thickness and large width and length, the structure of this integral inspection fixture 3 is prone to deformation. Even a small deformation will reduce the inspection accuracy. Furthermore, the integral inspection fixture 3 is too long, requiring large trucks for transportation, resulting in high transportation costs.

[0005] Another existing segmented inspection fixture is used to inspect the line shape of the inspection area 2 of the outer contour of the bow 1. Because it is a segmented fixture, it divides what is similar to a monolithic fixture 3 into sub-fixtures, each inspecting a different area. Inspection between adjacent areas becomes inaccurate. Furthermore, since the inspection area 2 is nearly 7 meters long, multiple inspectors are needed to align all the sub-fixtures together for inspection, resulting in low efficiency. Moreover, this segmented fixture has low accuracy in inspecting line dimensions. This is mainly because the segmented fixture relies on manual alignment and placement against the casting line. Gaps exist in the positioning positions of the different fixture segments during alignment; often, a 1mm gap can lead to a line shape deviation of over 10mm in the casting. The cumulative deviation of multiple fixture segments can reach over 50mm, resulting in a high inspection failure rate and easily causing the line shape and dimensions of the bow 1 to exceed the tolerance, thus reducing the quality of the bow 1.

[0006] Secondly, the bow 1 casting is very long, and the actual product lines will have deviations. At present, the main method is to use a tool to grind the casting lines. The gap between the casting lines and the tool is controlled within 2mm to be considered qualified. Although the lines can also be inspected by electronic devices such as 3D scanners, they are not very helpful in guiding the grinding and rework of the casting lines. Utility Model Content

[0007] To improve the inspection accuracy of the foreleg after casting, this basic solution provides an inspection tool for inspecting the line shape of large castings.

[0008] A fixture for inspecting the shape of large castings includes: multiple fixture segments, with adjacent fixture segments detachably connected, forming a fixture group; the outer contour of the fixture group is used to fit the outer contour of the bow column and check whether the outer contour of the bow column conforms to the standard dimensions; each fixture segment is fixedly equipped with a reinforcing rib, one side of which is fixedly installed on one fixture segment, and the other side is attached to another fixture segment adjacent to the first fixture segment; wherein the shortest fixture segment has a length of not less than 1000 mm.

[0009] Beneficial Effects: The inspection fixture provided by this basic solution for inspecting the linear shape of large castings has a structure different from existing technologies. Compared with existing technologies, firstly, the entire inspection fixture is divided into multiple sections, each of which can be detachably connected to each other, which is convenient and quick. Moreover, in use, the sections can be connected together to assemble the fixture into a whole, improving the accuracy of the inspection of the bow linear dimensions, reducing the inspection failure rate, and enabling the inspection to be completed in one go by simply placing the fixture assembly against the outer contour of the bow with minimal manpower.

[0010] Secondly, each section of the gauge is detachably connected to the others, allowing for easy connection during use and convenient storage and preservation when not in use. Compared to a single-piece gauge, its structure is less prone to deformation during storage or manufacturing, ensuring accuracy during multiple tests.

[0011] Furthermore, after disassembling each section of the gauge, the shortest end of the gauge is 1000mm long, eliminating the need for large trucks for transportation, thus reducing transportation costs and manufacturing difficulty.

[0012] Finally, the shortest end of the gauge is at least 1000mm long, which is still quite long. When two adjacent gauge segments are connected, they are prone to breakage at the connection point. Therefore, one side of the reinforcing rib is fixedly installed on one gauge segment, and the other side is attached to the adjacent gauge segment. This reinforces the connection between the two adjacent gauge segments and prevents breakage at the connection point. Furthermore, the fixing position and attachment method of the reinforcing rib do not hinder the disassembly of the two adjacent gauge segments. It eliminates the need to operate the reinforcing rib before disassembly and provides good fixation.

[0013] Preferably, it also includes multiple sets of connecting plates and multiple sets of bolts; one set of connecting plates corresponds to one set of bolts; in two adjacent gauge sections, one gauge section and the other gauge section abut against each other; one side of one set of connecting plates abuts against one gauge section, and the other side abuts against the other gauge section; one gauge section is bolted to one side of the set of connecting plates; the other gauge section is bolted to the other side of the set of connecting plates.

[0014] Beneficial effects: Two adjacent gauges can be initially fixed with a single connecting plate, and the disassembly and connection can be achieved.

[0015] Preferably, a first threaded connection through hole is opened on one side of a set of connecting plates, and a second threaded connection through hole is opened on the other side; in two adjacent gauge sections, one gauge section is provided with a first threaded through hole, the first threaded through hole being close to the other gauge section, and the other gauge section is provided with a second threaded through hole, the second threaded through hole being close to the first gauge section; the first threaded connection through hole matches the first threaded through hole, and the second threaded connection through hole matches the second threaded through hole; each connecting plate and gauge is connected by bolts.

[0016] Beneficial effects: By using a connecting plate to bolt together two adjacent gauges, and with the connecting plate spanning across one gauge and the other adjacent gauge, the two adjacent gauges can be detachably connected while also securing each other to prevent breakage at the connection point.

[0017] Preferably, there are two pairs of connecting plates in the group of connecting plates, and each pair of connecting plates has two connecting plates; one pair of connecting plates is located on one side of the reinforcing rib, and the other pair of connecting plates is located on the other side of the reinforcing rib; one pair of connecting plates is close to the outer contour of the gauge used to check the outer contour line of the bow, and the other pair of connecting plates is far away from the outer contour of the gauge used to check the outer contour line of the bow; in each pair of connecting plates, one connecting plate is located on the front of the gauge, and the other connecting plate is located on the back of the gauge.

[0018] Beneficial effects: Since the shortest section of the gauge is at least 1000mm long, its considerable length means that inadequate reinforcement between adjacent sections can easily lead to bending during use, resulting in poor inspection accuracy. However, by using two pairs of connecting plates, located on both sides of the reinforcing rib, and with two plates in each pair, one on the front and one on the back of the gauge, the gauge is effectively bolted together from both sides and the front and back, thus reinforcing the connection between adjacent gauge sections and preventing bending, thereby ensuring the inspection accuracy at the connection point between adjacent gauge sections.

[0019] Preferably, the bolt is an M16 bolt.

[0020] Beneficial effects: M16 bolts offer strong load-bearing capacity, convenient installation, and good wear resistance, making them suitable for fastening needs in a variety of harsh environments.

[0021] Preferably, the length of the connecting plate is no more than 300mm, the width is no more than 40mm, and the height is no more than 10mm.

[0022] Beneficial effects: If the length, width and height of the connecting plate are no more than 300mm, 40mm and 10mm respectively, when the connecting plate is installed on two adjacent gauges, it can not only fix the two adjacent gauges, but also reduce the material of the connecting plate and save manufacturing costs.

[0023] Preferably, the multi-segment inspection fixture comprises a first segment inspection fixture, a second segment inspection fixture, a third segment inspection fixture, and a fourth segment inspection fixture; the first segment inspection fixture, the second segment inspection fixture, the third segment inspection fixture, and the fourth segment inspection fixture abut against each other segment by segment, and adjacent segments of the inspection fixture are detachably connected; the reinforcing ribs include a first reinforcing rib, a second reinforcing rib, a third reinforcing rib, and a fourth reinforcing rib; wherein, the first reinforcing rib fixedly installed on the first segment inspection fixture is located on the front of the inspection fixture assembly, the second reinforcing rib fixedly installed on the second segment inspection fixture is located on the back of the inspection fixture assembly, the third reinforcing rib fixedly installed on the third segment inspection fixture is located on the front of the inspection fixture assembly, and the fourth reinforcing rib fixedly installed on the fourth segment inspection fixture is located on the back of the inspection fixture assembly.

[0024] Beneficial effects: The reinforcing ribs of two adjacent gauges are staggered, allowing them to come into contact with each other from different sides, thus achieving the effect of clamping the two adjacent gauges. This not only prevents the connection from loosening and causing inaccurate testing, but also avoids accidents such as breakage at the connection.

[0025] Preferably, one side of the first reinforcing rib extends into a first section of the gauge and abuts against the front of the second section of the gauge; one side of the second reinforcing rib extends into a second section of the gauge and abuts against the back of the first section of the gauge; the other side of the second reinforcing rib extends into a second section of the gauge and abuts against the back of the third section of the gauge; one side of the third reinforcing rib extends into a third section of the gauge and abuts against the front of the second section of the gauge; the other side of the third reinforcing rib extends into a third section of the gauge and abuts against the front of the fourth section of the gauge; one side of the fourth reinforcing rib extends into a fourth section of the gauge and abuts against the front of the fourth section of the gauge; one side of the first reinforcing rib extends into a third section of the gauge. The first section of the gauge extends out and intersects with the second section of the gauge extending from one side of the second reinforcing rib, clamping the abutment of the first and second sections of the gauge from the front and back respectively; the second section of the gauge extends out from the other side of the second reinforcing rib and intersects with the third section of the gauge extending from one side of the third reinforcing rib, clamping the abutment of the second and third sections of the gauge from the back and front respectively; the third section of the gauge extends out from the other side of the third reinforcing rib and intersects with the fourth section of the gauge extending from one side of the fourth reinforcing rib, clamping the abutment of the first and second sections of the gauge from the front and back respectively.

[0026] Beneficial effects: By clamping adjacent gauge segments together with staggered reinforcing ribs, the entire gauge assembly is highly secure, preventing loosening at the joints and avoiding inaccurate testing. Furthermore, the front and back clamping prevents breakage at the joints. The staggered reinforcing ribs also allow for easy disassembly of adjacent gauge segments, enhancing convenience. Finally, the staggered ribs facilitate precise positioning of each gauge segment during assembly, preventing misalignment and ensuring a non-standard gauge assembly structure that could lead to inaccurate testing.

[0027] Preferably, one end of the first section of the gauge has a first connecting groove, and one end of the second section of the gauge has a first connecting protrusion, with the first connecting groove and the first connecting protrusion being pluggable together; one end of the second section of the gauge has a second connecting groove, and one end of the third section of the gauge has a second connecting protrusion, with the second connecting groove and the second connecting protrusion being pluggable together; the other end of the third section of the gauge has a third connecting groove, and one end of the fourth section of the gauge has a third connecting protrusion, with the third connecting groove and the third connecting protrusion being pluggable together; wherein, the widths of the first, second, and third connecting grooves are all different; the widths of the first, second, and third connecting protrusions are all different.

[0028] Beneficial effects: Connecting adjacent gauge segments via a plug-in method makes the connection tighter and more reliable, further reinforcing the connection and preventing loosening or breakage. Secondly, the different widths of the first, second, and third connecting protrusions facilitate the operator's combination of different gauge segments, avoiding misalignment during assembly and preventing inaccurate test results.

[0029] Preferably, the length of the first reinforcing rib extending to the second section of the gauge is not less than 200 mm; the total length of the second reinforcing rib extending to the first and third sections of the gauge is not less than 400 mm; the length of the third reinforcing rib extending to the second and fourth sections of the gauge is not less than 400 mm; and the length of the fourth reinforcing rib extending to the third section of the gauge is not less than 200 mm.

[0030] Beneficial effects: It can not only further strengthen each interconnected gauge and prevent bending at the connection between two adjacent gauges, but also reduce the amount of reinforcing material used, thereby reducing manufacturing costs. Attached Figure Description

[0031] Figure 1 The background technology uses an integral inspection tool to perform linear inspection of the inspection area of ​​the outer contour of the bow.

[0032] Figure 2 This is a front structural schematic diagram of a fixture for inspecting the alignment of large bow columns according to this embodiment;

[0033] Figure 3 This is a schematic diagram of the back structure of a fixture for inspecting the alignment of large bow columns according to this embodiment;

[0034] Figure 4 This is a schematic diagram of the disassembled structure of a fixture for inspecting the alignment of large bow columns according to this embodiment;

[0035] Figure 5 This is a front view of the disassembled structure of the first and second inspection fixtures in this embodiment;

[0036] Figure 6 This is a front view of the disassembled structure of the second and third inspection fixtures in this embodiment;

[0037] Figure 7 This is a front view schematic diagram of the disassembled structure of the third and fourth inspection sections in this embodiment;

[0038] Figure 8 This is a schematic diagram of the back structure of the second section of the inspection fixture in this embodiment;

[0039] Figure 9This is a front structural diagram of the third section of the inspection fixture in this embodiment;

[0040] Figure 10 This is a schematic diagram of the back structure of the fourth section of the inspection fixture in this embodiment;

[0041] Figure 11 This is a side view schematic diagram of a fixture used for inspecting the alignment of large bow columns according to this embodiment. Detailed Implementation

[0042] Further explanation and description of the terms used in the specific implementation:

[0043] Figure 4 The view direction is the orientation of the front view, where the second reinforcing rib is located on the back of the second section of the fixture, and the fourth reinforcing rib is located on the back of the fourth section of the fixture. Only the parts that extend from the second section of the fixture and the parts that extend into the fourth section of the fixture are visible.

[0044] The reference numerals in the accompanying drawings include:

[0045] 1. Bowpost; 2. Inspection area; 3. Integral inspection fixture; 4. First section inspection fixture; 5. Second section inspection fixture; 6. Third section inspection fixture; 7. Fourth section inspection fixture; 8. First reinforcing rib; 9. Second reinforcing rib; 10. Third reinforcing rib; 11. Connecting plate; 12. Bolt; 13. Threaded through hole; 14. First connecting groove; 41. First connecting protrusion; 51. Second connecting groove; 52. Second connecting protrusion; 61. Third connecting groove; 62. Third connecting protrusion; 71. Centerline A.

[0046] Example

[0047] like Figure 2 , Figure 3 and Figure 4 As shown, this embodiment provides a gauge for inspecting the line alignment of a large bow 1, including a first gauge 4, a second gauge 5, a third gauge 6, a fourth gauge 7, a first reinforcing rib 8 welded to the front of the first gauge 4, a second reinforcing rib 9 welded to the back of the second gauge 5, a third reinforcing rib 10 welded to the front of the third gauge 6, a fourth reinforcing rib 11 welded to the front of the fourth gauge 7, as well as 3 sets of connecting plates 12 and 3 sets of bolts 13.

[0048] Specifically, the first inspection fixture 4, the second inspection fixture 5, the third inspection fixture 6, and the fourth inspection fixture 7 are detachably connected to form an inspection fixture assembly. The outer contour of the inspection fixture assembly is used to fit the outer contour of the bow 1 and check whether the outer contour line of the bow 1 conforms to the standard dimensions; if the outer contour of the inspection fixture assembly can fit tightly against the inspection area 2 of the outer contour of the bow 1, then the line of the outer contour of the bow 1 conforms to the standard.

[0049] Specifically, the first reinforcing rib 8, the second reinforcing rib 9, the third reinforcing rib 10, and the fourth reinforcing rib 11 are located in the middle of the first section of the inspection fixture 4, the second section of the inspection fixture 5, the third section of the inspection fixture 6, and the fourth section of the inspection fixture 7, respectively. For example... Figure 5 As shown, the first reinforcing rib 8 extends beyond the first section of the gauge 4 to abut and adhere to the front of the second section of the gauge 5. A first connecting groove 41 is formed at the right end of the first section of the gauge 4, and a first connecting protrusion 51 is fixed at the left end of the second section of the gauge 5. The first connecting groove 41 matches the first connecting protrusion 51, and the two are connected by a plug-in connection. Figure 6 As shown, the second reinforcing rib 9 extends into the second section of the gauge 5 on both sides to abut and adhere to the back of the first section of the gauge 4 and the back of the third section of the gauge 6, respectively. The left end of the second section of the gauge 5 has a second connecting groove 52, and the left end of the third section of the gauge 6 is fixed with a second connecting protrusion 61. The second connecting groove 52 matches the second connecting protrusion 61, and the two are connected by a plug-in connection. Figure 7 As shown, the third reinforcing rib 10 extends from the left and right sides of the third section of the gauge 6 to abut and adhere to the front of the second section of the gauge 5 and the front of the fourth section of the gauge 7, respectively. The fourth reinforcing rib 11 extends from the fourth section of the gauge 7 to abut and adhere to the back of the third section of the gauge 6. A third connecting groove 62 is provided at the right end of the third section of the gauge 6. A third connecting protrusion 71 is fixed at the left end of the fourth section of the gauge 7. The third connecting groove 62 matches the third connecting protrusion 71, and the two are connected by a plug-in connection. The second reinforcing rib 9 and the third reinforcing rib 10 pass through the second section of the gauge 5 and the third section of the gauge 6, respectively.

[0050] A fixture for inspecting the linearity of large castings includes three sets of connecting plates 12, three sets of bolts 13, and three sets of nuts. Each set of connecting plates 12 corresponds to one set of bolts 13 and one set of nuts. Each set of connecting plates 12 contains two pairs of connecting plates 12, and each pair of connecting plates 12 contains two connecting plates 12, for a total of 12 connecting plates 12. Each set of bolts 13 contains four pairs of bolts 13, and each pair of bolts 13 contains two bolts 13, for a total of 24 bolts 13. The bolts 13 are paired with nuts, resulting in a total of 24 nuts.

[0051] Specifically, such as Figure 5 As shown, the right side of the first section of the fixture 4 has two pairs of threaded through holes 14, both pairs being located near the disassembly connection point with the second section of the fixture 5. One pair of threaded through holes 14 is located above the first reinforcing rib 8, and the other two pairs are located below the first reinforcing rib 8. Each pair of threaded through holes 14 contains two holes. Figure 6As shown, the second section of the inspection fixture 5 has two pairs of threaded through holes 14 on its left and right sides. Both pairs of threaded through holes 14 are located near the disassembly connection point with the first section of the inspection fixture 4, and the other two pairs are located near the disassembly connection point with the third section of the inspection fixture 6. Two pairs of threaded through holes 14 are located above the second reinforcing rib 9, and the other two pairs are located below the second reinforcing rib 9. The third section of the inspection fixture 6 also has two pairs of threaded through holes 14 on its left and right sides. Both pairs of threaded through holes 14 are located near the disassembly connection point with the second section of the inspection fixture 5, and the other two pairs are located near the disassembly connection point with the fourth section of the inspection fixture 7. Two pairs of threaded through holes 14 are located above the third reinforcing rib 10, and the other two pairs are located below the third reinforcing rib 10. Figure 7 As shown, the left side of the fourth section of the inspection fixture 7 has two pairs of threaded through holes 14, both located near the disassembly and connection point with the third section of the inspection fixture 6. One pair of threaded through holes 14 is located on the upper side of the fourth reinforcing rib 11, and the other pair of threaded through holes 14 is located on the lower side of the fourth reinforcing rib 11.

[0052] like Figure 3 and 4 As shown, the connecting plate 12 has threaded connection holes. Three sets of connecting plates 12 are located at the detachable connection points of the first section of the fixture 4 and the second section of the fixture 5, the second section of the fixture 5 and the third section of the fixture 6, and the third section of the fixture 6 and the fourth section of the fixture 7, respectively. Each pair of connecting plates 12 abuts against the front and back of the fixture. The threaded connection holes on the connecting plate 12 and the threaded connection holes 14 on the fixture are aligned sequentially, allowing two bolts 13 to pass through the connecting plate 12 from the front and back of the fixture and into the fixture. This enables the first, second, third, and fourth fixtures to be connected to the connecting plate 12 via bolts 13. Furthermore, one threaded connection hole on one side of the connecting plate 12 matches the threaded connection hole of one fixture, and the other threaded connection hole on the other side matches the threaded connection hole of the fixture adjacent to the first fixture. The left side of the connecting plate 12 abuts against one fixture, and the right side abuts against another fixture adjacent to the first fixture. The connecting plate 12 and bolt 13 enable a detachable connection between two adjacent gauges. The connecting plate 12 further reinforces the connection between the two adjacent gauges. On two adjacent gauge sections, one pair of connecting plates 12 are close to the outer contour of the gauge used to inspect the outer contour of the bow 1, while the other pair of connecting plates 12 are away from the outer contour of the gauge used to inspect the outer contour of the bow 1. In this embodiment, the threaded connection through-hole includes a first threaded connection through-hole and a second threaded connection through-hole; the first threaded connection through-hole and the second threaded connection through-hole have the same size and structure. The threaded through-hole 14 includes a first threaded through-hole 14 and a second threaded through-hole 14; the first threaded through-hole 14 and the second threaded through-hole 14 have the same size and structure. Therefore, in this embodiment, it can be simply described as a threaded through-hole 14 or a threaded connection through-hole.

[0053] Specifically, a fixture for inspecting the linearity of large castings includes 12 connecting plates 12, 24 bolts 13, and 24 nuts. In this embodiment, the reinforcing ribs are all aluminum alloy reinforcing ribs, with a width of 15mm and a thickness of 20mm. The connecting plates 12 are made of Q235 steel plate, with a length, width, and height of 300mm, 40mm, and 10mm, respectively. The bolts 13 are 40mm long and are M16 type bolts. The nuts are M16 type nuts. Each bolt 13 and each nut are matched and connected.

[0054] The widths of the first connecting groove 41, the second connecting groove 52, and the third connecting groove 62 are all different; the widths of the first connecting protrusion 51, the second connecting protrusion 61, and the third connecting protrusion 71 are also different. In this embodiment, as... Figure 8 As shown, the width of the first connecting protrusion 51 is a, where a = 40 mm. Figure 9 As shown, the width of the second connecting protrusion 61 is b, where b = 50 mm. Figure 10 As shown, the width of the third connecting protrusion 71 is c, where c = 60 mm. The shortest segment of the gauge has a length of no less than 1000 mm.

[0055] like Figure 11 As shown, the area above the center line A on the side of the fixture is the front of the fixture, and the area below it is the back of the fixture. The first reinforcing rib 8 and the second reinforcing rib 9 work together to exert opposing forces on the first section of the fixture 4, further reinforcing it. The first reinforcing rib 8, the second reinforcing rib 9, and the third reinforcing rib 10 work together to exert opposing forces on the second section of the fixture 5, further reinforcing it. The second reinforcing rib 9, the third reinforcing rib 10, and the fourth reinforcing rib 11 work together to exert opposing forces on the third section of the fixture 6, further reinforcing it. The third reinforcing rib 10 and the fourth reinforcing rib 11 work together to exert opposing forces on the fourth section of the fixture 7, further reinforcing it.

[0056] In this embodiment, the length of the first reinforcing rib 8 extending to the second section of the gauge 5 is not less than 200 mm; the total length of the second reinforcing rib 9 extending to the first section of the gauge 4 and the third section of the gauge 6 is not less than 400 mm; the length of the third reinforcing rib 10 extending to the second section of the gauge 5 and the fourth section of the gauge 7 is not less than 400 mm; and the length of the fourth reinforcing rib 11 extending to the third section of the gauge 6 is not less than 200 mm.

[0057] Specifically, the first reinforcing rib 8 has an exposed portion of at least 200mm in length from the first section of the gauge 4; the second reinforcing rib 9 has an exposed portion of at least 400mm in length from the second section of the gauge 5; the third reinforcing rib 10 has an exposed portion of at least 400mm in length from the third section of the gauge 6; and the fourth reinforcing rib 11 has an exposed portion of at least 200mm in length from the fourth section of the gauge 7. In this embodiment, the overlapping portion of the first reinforcing rib 8 and the second reinforcing rib 9 in the first section of the gauge 4 is 200mm, and the overlapping portion in the second section of the gauge 5 is 200mm. The overlapping portion of the second reinforcing rib 9 and the third reinforcing rib 10 in the second section of the gauge 5 is 200mm, and the overlapping portion in the third section of the gauge 6 is 200mm. The overlapping portion of the third reinforcing rib 10 and the fourth reinforcing rib 11 in the third section of the gauge 6 is 200mm, and the overlapping portion in the fourth section of the gauge 7 is 200mm.

[0058] The usage method of this embodiment

[0059] Because of the differences between the first connecting protrusion 51, the second connecting protrusion 61, and the third connecting protrusion 71, workers can easily identify the corresponding section of the fixture and assemble it. First, the first connecting protrusion 51 of the second section of the fixture 5 is inserted into the first connecting groove 41 of the first section of the fixture 4. Then, the first connecting protrusion 51 and the second connecting protrusion 61 are connected by bolts 13 using the connecting plate 12. Similarly, the remaining sections of the fixture are assembled. Assembly and disassembly are simple, quick, and there is no risk of misalignment during assembly.

[0060] Beneficial effects of this embodiment

[0061] Compared to existing technologies, the inspection fixture provided in this embodiment for linear inspection of large bow pillars 1 can solve the problems of easy breakage at joints and inaccurate detection when the shortest section of the fixture is at least 1000mm long. It achieves the effects of accurate detection, strong robustness, simple manufacturing, simple assembly, easy transportation, less prone to assembly misalignment, easy assembly and positioning, and convenient carrying and disassembly.

[0062] First, connecting grooves and connecting protrusions are provided on adjacent two sections of the gauge, so that the two sections of the gauge can be initially assembled and fixed by plugging and unplugging, and are easy to disassemble. Moreover, the width of each set of connecting protrusions and connecting grooves is different, which makes it easy for the operator to assemble according to their width and prevents misalignment during assembly, which could lead to inaccurate testing.

[0063] Secondly, by having threaded through holes 14 on each of the two adjacent gauge sections, and matching threaded connection through holes on the connecting plate 12, one side of the connecting plate 12 is connected to a bolt 13 on one of the gauge sections, and the other side of the connecting plate 12 is connected to a bolt 13 on another adjacent gauge section. This allows for the reassembly and fixation of the two adjacent sections, and also facilitates disassembly. Furthermore, the connecting plates 12 are located not only on the front and back of the two adjacent gauge sections, but also on both sides of the reinforcing ribs, further securing the connection points of the gauges through multiple connecting plates 12.

[0064] Simultaneously, a first reinforcing rib 8 is welded to the front of the first section of the gauge 4. The first reinforcing rib 8 extends out of the first section of the gauge 4 and is closely attached to the adjacent second section of the gauge 5, with a length of up to 200 mm. A second reinforcing rib 9 is welded to the back of the second section of the gauge 5. The second reinforcing rib 9 extends out of the second section of the gauge 5 and is closely attached to the adjacent first section of the gauge 4 and the third section of the gauge 6, with a length of up to 200 mm each. The other third reinforcing ribs 10 and fourth reinforcing ribs 11 are treated similarly as described above. Figure 11 As shown, this is equivalent to misaligning the reinforcing ribs to apply opposite clamping forces near the connection point of two adjacent gauges on both the front and back sides, further reinforcing the gauges. This prevents the connection points from loosening, bending, or even breaking, even when the gauges are assembled together. Simultaneously, the misaligned reinforcing ribs also prevent misalignment during gauge assembly, facilitating proper assembly positioning for operators. Furthermore, fixing the reinforcing ribs to the center of the gauge does not affect the disassembly and assembly of adjacent gauges, making it highly practical.

[0065] Finally, each section of the inspection fixture is disassembled and connected. Compared with the integrated inspection fixture, which is manufactured in one piece, it is not only easier to manufacture, but also does not require large trucks for transportation, making transportation easier, and it has high accuracy in inspecting the bow's alignment.

[0066] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. 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 on this utility model.

[0067] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0068] It should be understood that the term "and / or" used in this document is merely a description of the same field in the related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0069] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

[0070] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A tooling for inspecting the linear shape of large castings, specifically for inspecting the inspection area of ​​the outer contour of the bow column, characterized in that... include: Multiple inspection fixtures are connected in a detachable manner between adjacent inspection fixtures, and multiple inspection fixtures are connected in a detachable manner to form an inspection fixture group; The outer contour of the fixture assembly is used to fit the outer contour of the bow and to check whether the outer contour line of the bow conforms to the standard dimensions; each fixture section is fixedly installed with a reinforcing rib, one side of the reinforcing rib is fixedly installed on one fixture section, and the other side is attached to another fixture section adjacent to the first fixture section. The shortest section of the gauge must be at least 1000 mm long.

2. The inspection tool for inspecting the linearity of large castings according to claim 1, characterized in that, It also includes multiple sets of connecting plates and multiple sets of bolts; A set of connecting plates corresponds to a set of bolts; in two adjacent gauge sections, one gauge section abuts against the other gauge section; one side of a set of connecting plates abuts against one gauge section, and the other side abuts against the other gauge section; one gauge section is bolted to one side of the set of connecting plates; the other gauge section is bolted to the other side of the set of connecting plates.

3. The inspection tool for inspecting the linearity of large castings according to claim 2, characterized in that, A first threaded connection through hole is opened on one side of a set of connecting plates, and a second threaded connection through hole is opened on the other side; In two adjacent inspection sections, one inspection section is provided with a first threaded through hole, which is close to the other inspection section, and the other inspection section is provided with a second threaded through hole, which is close to the first inspection section. The first threaded connection through hole matches the first threaded through hole, and the second threaded connection through hole matches the second threaded through hole; each connecting plate and fixture is bolted together.

4. A tool for inspecting the linearity of large castings according to claim 2, characterized in that, Each set of connecting plates contains two pairs of connecting plates, and each pair of connecting plates contains two connecting plates; one pair of connecting plates is located on one side of the reinforcing rib, and the other pair of connecting plates is located on the other side of the reinforcing rib. One pair of connecting plates is close to the outer contour of the fixture used to inspect the outer contour of the bow, and the other pair of connecting plates is far from the outer contour of the fixture used to inspect the outer contour of the bow. In each pair of connecting plates, one connecting plate is located on the front of the fixture, and the other connecting plate is located on the back of the fixture.

5. A tool for inspecting the linearity of large castings according to claim 2 or 3, characterized in that, The bolts are M16 type bolts.

6. A tool for inspecting the linearity of large castings according to claim 2 or 3, characterized in that, The length of the connecting plate shall not exceed 300mm, the width shall not exceed 40mm, and the height shall not exceed 10mm.

7. A tool for inspecting the linearity of large castings according to claim 1, characterized in that, The multi-segment inspection fixture consists of a first segment inspection fixture, a second segment inspection fixture, a third segment inspection fixture, and a fourth segment inspection fixture; the first segment inspection fixture, the second segment inspection fixture, the third segment inspection fixture, and the fourth segment inspection fixture are connected segment by segment, and adjacent segments of the inspection fixture are detachably connected; The reinforcing ribs include the first reinforcing rib, the second reinforcing rib, the third reinforcing rib, and the fourth reinforcing rib; The first reinforcing rib, which is fixedly installed on the first section of the fixture, is located on the front of the fixture assembly; the second reinforcing rib, which is fixedly installed on the second section of the fixture, is located on the back of the fixture assembly; the third reinforcing rib, which is fixedly installed on the third section of the fixture, is located on the front of the fixture assembly; and the fourth reinforcing rib, which is fixedly installed on the fourth section of the fixture, is located on the back of the fixture assembly.

8. A tool for inspecting the linearity of large castings according to claim 7, characterized in that, The first section of the gauge extends from one side of the first reinforcing rib and rests against the front of the second section of the gauge. The second reinforcing rib extends from one side to form a second section of the gauge, which is attached to the back of the first section of the gauge. The second reinforcing rib extends from the other side to form a second section of the gauge, which is attached to the back of the third section of the gauge. The third reinforcing rib extends from one side to form the third section of the inspection fixture, which is attached to the front of the second section of the inspection fixture. The third reinforcing rib extends from the other side to form the third section of the inspection fixture, which is attached to the front of the fourth section of the inspection fixture. The fourth reinforcing rib extends from one side into the fourth section of the gauge and rests against the front of the fourth section of the gauge. The first section of the gauge extends from one side of the first reinforcing rib and intersects with the second section of the gauge extending from one side of the second reinforcing rib, and clamps the abutment of the first section of the gauge and the second section of the gauge from the front and back respectively. The second reinforcing rib extends from the other side of the second section of the gauge, which is parallel to and intersects with the third reinforcing rib extending from one side of the third section of the gauge, and clamps the contact point of the second and third sections of the gauge from the back and front respectively. The third reinforcing rib extends from the other side of the third section of the gauge, which is parallel to and intersects with the fourth section of the gauge extending from one side of the fourth reinforcing rib, and clamps the joint of the first and second sections of the gauge from the front and back respectively.

9. A tool for inspecting the linearity of large castings according to claim 7, characterized in that, The first section of the gauge has a first connecting groove at one end, and the second section of the gauge has a first connecting protrusion at one end. The first connecting groove and the first connecting protrusion are plugged and unplugged together. The second section of the gauge has a second connecting groove at one end, and the third section of the gauge has a second connecting protrusion at one end. The second connecting groove and the second connecting protrusion are plugged in and plugged in. The third section of the gauge has a third connecting groove at the other end, and the fourth section of the gauge has a third connecting protrusion at one end. The third connecting groove and the third connecting protrusion are plugged in and plugged in. The widths of the first connecting groove, the second connecting groove, and the third connecting groove are all different; the widths of the first connecting protrusion, the second connecting protrusion, and the third connecting protrusion are all different.

10. A tool for inspecting the linearity of large castings according to claim 8, characterized in that, The first reinforcing rib extends to the second section of the gauge for a length of not less than 200 mm; the second reinforcing rib extends to the first and third sections of the gauge for a total length of not less than 400 mm; the third reinforcing rib extends to the second and fourth sections of the gauge for a length of not less than 400 mm; and the fourth reinforcing rib extends to the third section of the gauge for a length of not less than 200 mm.

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