Auxiliary device for cylinder measurement

Abstract

The utility model relates to the technical field of steam turbine maintenance, in particular to an auxiliary device for measuring a cylinder, which comprises a central connecting seat and a fixing assembly, the central connecting seat comprises a measuring end and at least three connecting ends, and the axis extension lines of the at least three connecting ends are not in the same plane. Each connecting end is fixedly connected with a connecting rod, the end part of each connecting rod is fixedly connected with a target ball, the measuring end is fixedly connected with a measuring rod, the end part of the measuring rod is provided with a measuring piece, and the measuring piece is used for being in contact with a to-be-measured part of the cylinder. When the measuring piece is in contact with the to-be-measured part, the position of each target ball is unique and determined, so that the uniquely determined space coordinate of the measuring piece can be jointly determined through the space coordinates of the at least three target balls, the space coordinate of the to-be-measured position is further obtained, and the position which cannot be directly observed by the laser tracker is measured.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine maintenance, in particular to a cylinder measurement auxiliary device. Background Art

[0002] When inspecting a steam turbine, it is necessary to measure the data of each component in the cylinder and obtain the flow clearance at each location through data fitting to determine whether it is qualified. In the prior art, a laser tracker is used for measurement, but some areas inside the cylinder to be measured are deep or narrow, such as the blade tip steam seal teeth, which cannot be directly observed by the laser tracker and thus cannot be directly measured. Utility Model Content

[0003] The utility model aims to provide a cylinder measurement auxiliary device, so that a laser tracker can directly measure positions such as blade tip steam seal teeth which cannot be directly observed.

[0004] The utility model provides a cylinder measurement auxiliary device, comprising a central connecting seat and a fixed assembly, the central connecting seat comprising a measuring end and at least three connecting ends, the axis extension lines of the at least three connecting ends are not in the same plane, each connecting end is fixedly connected to a connecting rod, the end of each connecting rod is fixedly connected to a target ball, the measuring end is fixedly connected to a measuring rod, the end of the measuring rod is provided with a measuring piece, the measuring piece is used to contact with a part to be measured of the cylinder, the fixed assembly is fixedly connected to the central connecting seat, and the fixed assembly is used to support the central connecting seat.

[0005] As a preferred technical solution of the cylinder measurement auxiliary device, the measuring rod includes a plurality of sub-rods connected end to end, and two adjacent sub-rods are detachably connected.

[0006] As an optimal technical solution for the cylinder measurement auxiliary device, an adapter is provided at the end of the measuring rod, one end of the adapter is fixedly connected to the measuring rod, and the other end of the adapter is fixedly connected to the measuring piece. The measuring piece is provided with a ball head, which is used to contact the part to be measured.

[0007] As an optimal technical solution for the cylinder measurement auxiliary device, it also includes a clamping block, which is provided with a clamping groove and a clamping groove. The clamping groove is connected to the clamping groove. The clamping groove is used to clamp the blade top steam seal tooth to be measured in the cylinder, and the ball head can be clamped in the clamping groove.

[0008] As a preferred technical solution for the cylinder measurement auxiliary device, guide surfaces are provided at the bottom of both sides of the clamping block, and the guide surfaces are used to guide the clamping groove of the clamping block to above the blade tip steam seal tooth to be measured.

[0009] As a preferred technical solution of the cylinder measurement auxiliary device, an introduction surface is provided at the opening of the clamping groove, and the introduction surface is used to guide the blade tip steam seal tooth to be measured into the clamping groove.

[0010] As a preferred technical solution of the cylinder measurement auxiliary device, the clamping block is also provided with a deformation groove, and the deformation groove is used to provide a deformation space for the ball head when the ball head is clamped in the clamping groove.

[0011] As a preferred technical solution for the cylinder measurement auxiliary device, the fixing assembly includes a magnetic table base, which includes a fixedly connected magnetic block and a support rod, the support rod is fixedly connected to the central connecting seat, and the magnetic block is adsorbed on the cylinder.

[0012] As a preferred technical solution for the cylinder measurement auxiliary device, the fixed component also includes a pan-tilt assembly and a slide assembly. The support rod is fixedly connected to the input end of the pan-tilt assembly, the output end of the pan-tilt assembly is connected to the input end of the slide assembly, and the output end of the slide assembly is fixedly connected to the center connecting seat. The pan-tilt assembly is used to drive the slide assembly to rotate relative to the support rod, and the slide assembly is used to drive the center connecting seat to slide relative to the support rod.

[0013] As a preferred technical solution for the cylinder measurement auxiliary device, the fixed component is a tripod, the three legs of the tripod are supported on the partition of the cylinder, and the tripod is provided with a telescopic rod, which is used to connect with the central connecting seat.

[0014] The beneficial effects of the utility model are:

[0015] The utility model provides a cylinder measurement auxiliary device, which is provided with at least three connection ends, and the axis extension lines of at least three connection ends are not in the same plane, and each connection end is fixedly connected with a connection rod, and the end of each connection rod is fixedly connected with a target ball. When a measuring piece contacts a part to be measured, the position of each target ball is unique and determined. Therefore, the spatial coordinates of a uniquely determined measuring piece can be jointly determined by the spatial coordinates of at least three target balls, and then the spatial coordinates of the position to be measured are obtained, so that the measurement of the position that cannot be directly observed by a laser tracker can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the cylinder measurement auxiliary device in the embodiment of the utility model at a first viewing angle;

[0017] Figure 2 for Figure 1 A partial enlarged view of part A;

[0018] Figure 3 for Figure 1 A partial enlarged view of part B;

[0019] Figure 4 It is a structural schematic diagram of the cylinder measurement auxiliary device in the embodiment of the utility model at a second viewing angle;

[0020] Figure 5 for Figure 4 A partial enlarged view of part C in the middle;

[0021] Figure 6 It is a schematic diagram of the cylinder measurement auxiliary device in the embodiment of the utility model measuring the blade tip steam seal teeth through the clamping block;

[0022] Figure 7 This is a schematic diagram of the structure of the card block in the embodiment of the utility model at a first viewing angle;

[0023] Figure 8 This is a schematic diagram of the structure of the card block in the embodiment of the utility model at a second viewing angle;

[0024] Fig. 9 It is a cross-sectional view of a card block in an embodiment of the utility model;

[0025] Fig.10 This is a schematic diagram of the structure of the fixed support assembly in the first embodiment of the present utility model;

[0026] Fig.11 It is a structural schematic diagram of the fixed support assembly in the second embodiment of the present utility model.

[0027] In the figure:

[0028] 100. Blade tip steam seal teeth;

[0029] 1. Center connection seat; 11. First connection end; 12. Second connection end; 13. Third connection end; 14. Measuring end; 15. Adjustment seat; 151. Long hole; 16. Handle;

[0030] 21. first connecting rod; 22. second connecting rod; 23. third connecting rod; 24. measuring rod; 241. adapter;

[0031] 31. first target ball; 32. second target ball; 33. third target ball; 34. measuring piece; 341. ball head;

[0032] 4. Magnetic table base; 41. Magnetic suction block; 42. Support rod;

[0033] 5. Tripod; 51. Support leg; 52. Telescopic rod; 53. Articulated joint;

[0034] 61. PTZ assembly; 62. Slide assembly;

[0035] 7. Clamping block; 71. Guide surface; 72. Lead-in surface; 73. Clamping groove; 74. Clamping groove; 75. Deformation groove. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solution of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] Embodiment 1

[0041] like Figure 1-Figure 10As shown, the utility model provides a cylinder measurement auxiliary device, which is used in positions that cannot be directly observed by a laser tracker and cannot be directly measured, such as the blade top seal teeth 100 of the cylinder. Thereby, indirect measurement of the position that cannot be directly observed by the laser tracker is achieved. The cylinder measurement auxiliary device includes a central connecting seat 1 and a fixed component, the fixed component is fixedly connected to the central connecting seat 1, and the fixed component is used to support the central connecting seat 1. The central connecting seat 1 includes a measuring end 14 and at least three connecting ends, and the axis extension lines of at least three connecting ends are not in the same plane. Each connecting end is fixedly connected to a connecting rod, and the end of each connecting rod is fixedly connected to a target ball. A measuring rod 24 is fixedly connected to the measuring end 14, and a measuring piece 34 is provided at the end of the measuring rod 24. The measuring piece 34 is used to contact the part to be measured of the cylinder. In this embodiment, in order to simplify the structure under the premise of meeting the use requirements, three connecting ends are set, and the three connecting ends of the corresponding central connecting seat 1 are respectively the first connecting end 11, the second connecting end 12 and the third connecting end 13, the connecting rods are respectively the first connecting rod 21, the second connecting rod 22 and the third connecting rod 23, and the target balls are respectively the first target ball 31, the second target ball 32 and the third target ball 33. The first connecting rod 21 is fixedly connected to the first connecting end 11, and the connection method is preferably a threaded connection, and the first target ball 31 is fixedly connected to the end of the first connecting rod 21. The second connecting rod 22 is fixedly connected to the second connecting end 12, and the connection method is preferably a threaded connection, and the second target ball 32 is fixedly connected to the end of the second connecting rod 22. The third connecting rod 23 is fixedly connected to the third connecting end 13, and the connection method is preferably a threaded connection, and the third target ball 33 is fixedly connected to the end of the third connecting rod 23. The first connecting end 11, the second connecting end 12, the third connecting end 13 and the fourth connecting end are evenly distributed along the circumference of the central connecting seat 1, forming a structure similar to a cross. The first connection end 11 is coaxially arranged with the measuring end 14, and the axes of the second connection end 12 and the third connection end 13 are arranged at an angle and are not coplanar. Since all parts are fixedly connected and there is no relative movement, when the measuring piece 34 contacts the part to be measured, the positions of the first target ball 31, the second target ball 32 and the third target ball 33 in space are uniquely determined. Therefore, the spatial coordinates of a uniquely determined measuring piece 34 can be jointly determined by the spatial coordinates of the first target ball 31, the second target ball 32 and the third target ball 33, and then the spatial coordinates of the position to be measured can be obtained, so as to measure the position that cannot be directly observed by the laser tracker. This shortens the maintenance time, improves the maintenance quality, reduces the number of large-scale hoisting times, and ensures the safety of personnel and equipment.

[0042] Optionally, in order to improve lightweight, the material of the center connecting seat 1 in this embodiment is preferably aluminum alloy, and the material of the first connecting rod 21, the second connecting rod 22, the third connecting rod 23 and the measuring rod 24 is preferably carbon fiber, thereby greatly improving lightweight while ensuring structural strength and greatly reducing the labor intensity of the operator.

[0043] Furthermore, the measuring rod 24 includes a plurality of sub-rods connected end to end, and two adjacent sub-rods are detachably connected, such as by threaded connection. As the use environment of the measuring rod 24 changes, the length of the measuring rod 24 needs to be increased or decreased, so the length of the measuring rod 24 can be changed by increasing or decreasing the number of sub-rods to adapt to more use scenarios.

[0044] Furthermore, if Figure 3 As shown, the end of the measuring rod 24 is provided with an adapter 241, and one end of the adapter 241 is fixedly connected to the measuring rod 24, and the connection method is preferably a threaded connection. The other end of the adapter 241 is fixedly connected to the measuring piece 34, and the connection method is preferably a threaded connection. Since the thread specifications of the measuring piece 34 are inconsistent with the thread specifications of the measuring rod 24, the adapter 241 is provided to adapt the two to improve versatility. The measuring piece 34 is provided with a ball head 341, and the ball head 341 is used to contact the part to be measured. After the spatial coordinates of the center of the ball head 341 are obtained through the first target ball 31, the second target ball 32 and the third target ball 33, the spatial coordinates of the part to be measured can be quickly obtained.

[0045] Furthermore, if Figure 6-Figure 9 As shown, when measuring the blade tip steam seal tooth 100, in order to ensure that the ball head 341 can always keep in contact with the blade tip steam seal tooth 100, the cylinder measurement auxiliary device also includes a clamping block 7, and the clamping block 7 is provided with a clamping groove 73 and a clamping groove 74, and the clamping groove 73 and the clamping groove 74 are connected. The clamping groove 73 is used to clamp the blade tip steam seal tooth 100 to be measured by the cylinder, and the outer contour of the blade tip steam seal tooth 100 is a cone, and the inner side wall of the clamping groove 73 is set to a cone corresponding thereto, and when the blade tip steam seal tooth 100 completely enters the clamping groove 73, the outer side wall of the blade tip steam seal tooth 100 is tightly attached to the inner side wall of the clamping groove 73. The ball head 341 can be clamped in the clamping groove 74, and the bottom of the ball head 341 is in contact with the blade tip steam seal tooth 100, so that the ball head 341 and the blade tip steam seal tooth 100 are always in contact through the clamping block 7.

[0046] For details, please refer to Figure 6-Figure 9As shown, the bottom of both sides of the clamping block 7 is provided with a guide surface 71, and the guide surface 71 is used to guide the clamping groove 73 of the clamping block 7 to the top of the blade tip steam seal tooth 100 to be measured. In the process of clamping the clamping block 7 to the blade tip steam seal tooth 100, due to the narrow space, the guide surface 71 can quickly guide the clamping block 7 to the blade tip steam seal tooth 100 to be measured. At the same time, an introduction surface 72 is provided at the opening of the clamping groove 73. When the guide surface 71 guides the clamping block 7 to the top of the blade tip steam seal tooth 100, the clamping groove 73 and the blade tip steam seal tooth 100 may not be aligned. By providing the introduction surface 72, the blade tip steam seal tooth 100 first contacts the introduction surface 72, and slides into the clamping groove 73 until it is tightly attached to the inner wall of the clamping groove 73.

[0047] For details, please refer to Figure 6-Figure 9 As shown, in order to ensure that the ball head 341 can be reliably engaged in the engaging groove 74, the engaging groove 74 is set to be cylindrical, and the bottom is set to be hemispherical, and its diameter is smaller than the ball diameter of the ball head 341. A plurality of deformation grooves 75 are also provided on the clamping block 7, preferably four, and the four deformation grooves 75 are evenly distributed along the circumference of the engaging groove 74. The deformation groove 75 is used to provide a deformation space for the ball head 341 in the process of the ball head 341 being engaged in the clamping groove 73, so that the ball head 341 is clamped in the clamping groove 73 through the elastic deformation of the clamping block, thereby ensuring the reliability of the clamping connection between the ball head 341 and the clamping block. The clamping block 7 is preferably made of polytetrafluoroethylene material, and the parts made of polytetrafluoroethylene material have a certain elastic deformation ability and good structural strength.

[0048] Furthermore, if Fig.10 As shown, the fixing assembly includes a magnetic meter base 4, which includes a fixedly connected magnetic block 41 and a support rod 42, the support rod 42 is fixedly connected to the central connecting base 1, and the magnetic block 41 is adsorbed on the cylinder, thereby supporting the central connecting base 1. The magnetic meter base 4 can use a structure in the prior art, and no specific limitation is made here. Figure 5 As shown, an adjustment seat 15 is fixedly connected to one side of the center connecting seat 1, and a long hole 151 is provided on the adjustment seat 15 along the axial direction of the measuring rod 24. The support rod 42 is fixedly connected to the center connecting seat 1 through the long hole 151 by a fastener, thereby realizing the adjustable position of the center connecting seat 1 to a certain extent, and then adjusting the position of the measuring piece 34 so that the measuring piece 34 can contact the position to be measured.

[0049] Alternatively, if Figure 2 As shown, a handle 16 is provided on the other side of the central connecting seat 1, and the handle 16 is provided to facilitate the operator to carry out the picking up and measuring operations.

[0050] Optionally, please continue to refer to Fig.10As shown, in order to further improve the adjustable ability of the center connecting seat 1, the fixed assembly also includes a pan-tilt assembly 61 and a slide assembly 62. The support rod 42 is fixedly connected to the input end of the pan-tilt assembly 61, the output end of the pan-tilt assembly 61 is connected to the input end of the slide assembly 62, and the output end of the slide assembly 62 is fixedly connected to the center connecting seat 1. The pan-tilt assembly 61 is used to drive the slide assembly 62 to rotate relative to the support rod 42, and then drive the center connecting seat 1 to rotate relative to the support rod 42. The rotation angle range and rotation direction are determined according to the selected pan-tilt assembly 61. The slide assembly 62 is used to drive the center connecting seat 1 to slide relative to the support rod 42, and the sliding distance range and sliding direction are determined according to the selected slide assembly 62. Both the pan-tilt assembly 61 and the slide assembly 62 adopt structures in the prior art, and no specific description and specification limitation are given here.

[0051] The utility model provides a method for measuring the flow clearance, which uses a laser tracker, a transfer station, a target ball and a cylinder measurement auxiliary device in this embodiment to measure various components inside the cylinder, such as a bearing box oil baffle, an end seal tooth, a partition plate and a blade tip seal tooth 100. The method for measuring the flow clearance includes the following steps:

[0052] Arrange a laser tracker and several transfer stations in the cylinder. The number of transfer stations should be no less than four. Adjust the position of the laser tracker and ensure that the laser tracker can directly observe the cylinder center plane, cylinder, various levels of partitions, end seal teeth, bearing box oil block, seal ring inner surface and each transfer station. Use the laser tracker to measure the coordinates of each transfer station and establish a spatial coordinate system.

[0053] Use a target ball to measure the bearing box oil baffle, and fit multiple measurement points of the bearing box oil baffle into a cylindrical surface to obtain the corresponding diameter and the center line of the bearing box oil baffle. The specific measurement operation method and fitting method are the prior art in this field and will not be described here.

[0054] Use a target ball and a standard block to measure the end steam seal teeth, and fit multiple measurement points of the end steam seal teeth into a cylindrical surface to obtain the corresponding diameter and the center line of the end steam seal teeth. The specific standard usage, measurement operation method and fitting method are the existing technologies in this field and will not be described here.

[0055] Both ends of the cylinder body are provided with bearing box oil baffles and end steam seal teeth, so the bearing box oil baffles and end steam seal teeth at both ends of the cylinder body are measured. The two bearing box oil baffle center lines obtained are fitted into one bearing box oil baffle center line, and the two end steam seal tooth center lines obtained are fitted into one end steam seal tooth center line.

[0056] Fit the center line of the bearing box oil baffle and the center line of the end steam seal tooth as the reference axis.

[0057] The target ball is used to measure the partitions step by step, and multiple measurement points of each partition are fitted into a cylindrical surface to obtain the corresponding diameter, which is then fitted with the diameter of the corresponding rotor part to obtain the flow clearance at the partition. The specific measurement operation method and fitting method are prior arts in this field and will not be described in detail here.

[0058] Use the cylinder measurement auxiliary device in this embodiment to measure the main engine of the blade tip steam seal tooth 100, select any point on the blade tip steam seal tooth 100 to establish a projection plane perpendicular to the reference axis, measure the selected point, obtain the spatial coordinates, project the spatial coordinates of the measurement point of the blade tip steam seal tooth 100 onto the projection plane to obtain the spatial coordinates of the projection point, establish a circle through the spatial coordinates of the projection point and the reference axis, obtain the corresponding diameter, fit it with the corresponding rotor diameter, and obtain the flow clearance at the blade tip steam seal tooth 100.

[0059] By using the cylinder measurement auxiliary device in this embodiment to measure the blade tip steam seal tooth 100, the laser tracker can complete the measurement even when the blade tip steam seal tooth 100 cannot be directly observed, thereby shortening the maintenance time, improving the maintenance quality, reducing the number of large-scale lifting times, and ensuring the safety of personnel and equipment.

[0060] Specifically, using the cylinder measurement auxiliary device to measure the blade tip steam seal tooth 100 includes the following steps:

[0061] The positions of the ball head 341 and the first target ball 31, the second target ball 32 and the third target ball 33 are measured to obtain their respective spatial coordinates, and finally the theoretical positional relationship between the ball head 341 and the first target ball 31, the second target ball 32 and the third target ball 33 is obtained. The theoretical positional relationship varies according to the relative positions of the first target ball 31, the second target ball 32 and the third target ball 33 and the ball head 341. For example, when the length of the first connecting rod 21, the second connecting rod 22, the third connecting rod 23 and / or the measuring rod 24 changes, or when the angle between the second connecting rod 22 and the third connecting rod 23 changes, the theoretical positional relationship between the ball head 341 and the first target ball 31, the second target ball 32 and the third target ball 33 will change, so the theoretical positional relationship is not specifically limited here.

[0062] After obtaining the theoretical positional relationship between the ball head 341 and the first target ball 31 , the second target ball 32 and the third target ball 33 , the ball head 341 is brought into contact with the blade tip steam seal tooth 100 to be measured to ensure that the laser tracker can observe the first target ball 31 , the second target ball 32 and the third target ball 33 .

[0063] The positions of the first target ball 31 , the second target ball 32 and the third target ball 33 are measured, and the position of the ball head 341 is obtained according to the theoretical position relationship, so as to finally obtain the spatial coordinates of the measuring point of the steam seal tooth to be measured.

[0064] Specifically, to ensure that the ball head 341 always maintains contact with the blade tip steam seal tooth 100 during the measurement process, first clamp the clamping block 7 on the blade tip steam seal tooth 100 to be measured, clamp the ball head 341 in the clamping groove 74, and adsorb the magnetic block 41 of the fixing assembly at the appropriate position of the partition.

[0065] Embodiment 2

[0066] To avoid redundancy, only the differences from the first embodiment are described in this embodiment. The difference between this embodiment and the first embodiment is that the structure of the fixing assembly is different.

[0067] Specifically, Fig.11 As shown, the fixed component is a tripod 5, and three legs 51 of the tripod 5 are supported on two partitions of the cylinder. The tripod 5 is provided with a telescopic rod 52, and the telescopic rod 52 can slide relative to the legs 51 in a certain direction. The telescopic rod 52 is used to connect with the central connecting seat 1, and the position of the central connecting seat 1 can also be adjusted within a certain range. A hinge 53 can also be provided on the telescopic rod 52, and the output end of the hinge 53 is fixedly connected to the central connecting seat 1 to achieve the angle adjustment of the central connecting seat 1. The specific structure of the tripod 5 is the prior art in this field, and its specific structural form is no longer specifically limited here.

[0068] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Cylinder measurement auxiliary device, characterized in that: include: A central connecting seat (1), the central connecting seat (1) comprising a measuring end (14) and at least three connecting ends, the axis extension lines of at least three connecting ends are not in the same plane, each connecting end is fixedly connected to a connecting rod, the end of each connecting rod is fixedly connected to a target ball, the measuring end (14) is fixedly connected to a measuring rod (24), the end of the measuring rod (24) is provided with a measuring piece (34), and the measuring piece (34) is used to contact the part of the cylinder to be measured; A fixing component, the fixing component is fixedly connected to the central connecting seat (1), and the fixing component is used to support the central connecting seat (1).

2. The cylinder measurement auxiliary device according to claim 1, characterized in that: The measuring rod (24) comprises a plurality of sub-rods connected end to end, and two adjacent sub-rods are detachably connected.

3. The cylinder measurement auxiliary device according to claim 1, characterized in that: An adapter (241) is provided at the end of the measuring rod (24), one end of the adapter (241) is fixedly connected to the measuring rod (24), and the other end of the adapter (241) is fixedly connected to the measuring piece (34), and the measuring piece (34) is provided with a ball head (341), and the ball head (341) is used to contact the part to be measured.

4. The cylinder measurement auxiliary device according to claim 3, characterized in that: It also comprises a clamping block (7), the clamping block (7) being provided with a clamping groove (73) and a clamping groove (74), the clamping groove (73) being communicated with the clamping groove (74), the clamping groove (73) being used for clamping the tip steam seal tooth (100) of the cylinder to be measured, and the ball head (341) being capable of being clamped in the clamping groove (74).

5. The cylinder measurement auxiliary device according to claim 4, characterized in that: The bottoms of both sides of the clamping block (7) are provided with guide surfaces (71), and the guide surfaces (71) are used to guide the clamping groove (73) of the clamping block (7) to the top of the blade tip steam seal tooth (100) to be measured.

6. The cylinder measurement auxiliary device according to claim 5, characterized in that: An introduction surface (72) is provided at the opening of the clamping groove (73), and the introduction surface (72) is used to introduce the blade tip steam seal tooth (100) to be measured into the clamping groove (73).

7. The cylinder measurement auxiliary device according to claim 4, characterized in that: The clamping block (7) is further provided with a deformation groove (75), and the deformation groove (75) is used to provide a deformation space for the ball head (341) when the ball head (341) is clamped in the clamping groove (74).

8. The cylinder measurement auxiliary device according to claim 1, characterized in that: The fixing assembly comprises a magnetic table seat (4), the magnetic table seat (4) comprises a fixedly connected magnetic suction block (41) and a support rod (42), the support rod (42) is fixedly connected to the central connecting seat (1), and the magnetic suction block (41) is adsorbed on the cylinder.

9. The cylinder measurement auxiliary device according to claim 8, characterized in that: The fixed component also includes a pan-tilt assembly (61) and a slide assembly (62); the support rod (42) is fixedly connected to the input end of the pan-tilt assembly (61); the output end of the pan-tilt assembly (61) is connected to the input end of the slide assembly (62); the output end of the slide assembly (62) is fixedly connected to the central connecting seat (1); the pan-tilt assembly (61) is used to drive the slide assembly (62) to rotate relative to the support rod (42); and the slide assembly (62) is used to drive the central connecting seat (1) to slide relative to the support rod (42).

10. The cylinder measurement auxiliary device according to claim 1, characterized in that: The fixing assembly is a tripod (5), three legs (51) of the tripod (5) are supported on the partition of the cylinder, and the tripod (5) is provided with a telescopic rod (52), and the telescopic rod (52) is used to connect with the central connecting seat (1).

Images