An auxiliary tool for detecting the positioning ring of the stationary blade bearing cylinder of a TRT unit

Abstract

The utility model provides an auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of a TRT unit, which solves the technical problems of low measurement efficiency, high requirements for personnel, and difficulty in ensuring measurement accuracy in the prior art. The auxiliary tooling includes a base and a measuring piece; the base is provided with a side surface and a bottom surface perpendicular to each other; protrusions are respectively provided on both sides of the side surface, and a slide groove is provided between the inner side of the protrusion and the side surface; the measuring piece is a flat plate structure, the thickness of which is adapted to the groove width of the slide groove, the thickness of the lower end is adapted to the width of the engraved line on the positioning ring to be measured, and can be placed in the engraved line; the width of the measuring piece is greater than the distance between the inner sides of the two protrusions, and is adapted to the distance between the groove bottoms of the two slide grooves; the distance between the inner sides of the two protrusions is greater than the width of the flat hole on the positioning ring to be measured. The auxiliary tooling not only improves the detection efficiency, but also eliminates the restriction on the operator's operating proficiency, and has stronger applicability.

Description

Technical Field

[0001] The utility model relates to a positioning ring detection tool, in particular to an auxiliary tool used for detecting the positioning ring of a stationary blade bearing cylinder of a TRT unit. Background Art

[0002] The locating ring is a component in the TRT unit's stationary blade bearing cylinder that cannot adjust the installation angle of the stationary blade. The locating ring is connected to the stationary blade bearing cylinder through the two countersunk holes on it, and the relative angle between the keyway-shaped flat hole that matches the stationary blade flat table and the two countersunk holes determines the installation angle of the stationary blade. A 0.3mm deep engraved line on the surface of the locating ring indicates the correct installation direction of the locating ring.

[0003] However, in the actual installation process, it is necessary to ensure the absolute positioning of the two countersunk holes of the locating ring, and to ensure that the engraved lines on its surface coincide with the engraved lines on the surface of the bearing cylinder, in order to determine the correctness of the installation of the locating ring. If the engraved line angle is wrong, two situations will occur during installation: First, if the installation is performed by aligning the engraved lines, the countersunk holes on the locating ring will not align with the screw holes of the bearing cylinder; second, if the installation is performed by positioning the countersunk holes, the engraved lines will be skewed, the direction indication will be wrong, and the appearance requirements will not be met. Therefore, the engraved line angle of the locating ring must be detected to ensure the correctness of the installation of the locating ring, thereby ensuring the installation angle of the stationary blade.

[0004] The existing technology is to use a knife-edge ruler to extend the scale line parallel to the space, specifically: manually place the knife-edge ruler into the scale line, then use two gauge blocks to vertically squeeze and clamp the knife-edge ruler, then use the measuring ball of the three-dimensional coordinate measuring machine to take linear points on the knife-edge ruler, obtain the characteristic data of the scale line through projection, and finally calculate the angle between the scale line and the line connecting the two countersunk holes through measurement software.

[0005] As for the detection of the relative angle between the flat hole and the engraved line, the angle between the engraved line normal and the symmetry axis of the flat hole is detected according to the drawing requirements. The normal line of the engraved line feature data is constructed through the measurement software; then the two sides of the flat hole are linearly sampled, and the symmetry axis is generated by the measurement software through the center division processing, and finally the angle between the engraved line normal and the flat hole is calculated by the measurement software.

[0006] All the angle dimensions of the positioning ring can be detected by the above method. When installing, it can be installed in the direction indicated by the engraved line to ensure the correct installation of the positioning ring. It can be seen that the measurement of the positioning ring engraved line is particularly critical. However, with the further increase in the demand for positioning ring detection, the above method requires more loading and unloading of parts during operation, resulting in low measurement efficiency; in addition, the above method is easily limited by the operating level of personnel, and generally requires skilled staff to operate, which has high requirements for personnel. If the operator is replaced, the measurement accuracy and efficiency are difficult to guarantee. Utility Model Content

[0007] The utility model aims to provide an auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of a TRT unit, so as to solve the technical problems of low measurement efficiency, high requirements on personnel, and difficulty in ensuring measurement accuracy in the prior art.

[0008] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0009] An auxiliary tool for detecting the positioning ring of a stationary blade bearing cylinder of a TRT unit is used for auxiliary measurement of characteristic data of a scale line on the positioning ring to be measured, wherein the positioning ring to be measured is provided with a flat hole; the special feature thereof is that:

[0010] Includes base and measuring piece;

[0011] The base is provided with a side surface and a bottom surface which are perpendicular to each other; protrusions are provided on both sides of the side surface, and a sliding groove is provided between the inner side of the protrusion and the side surface;

[0012] The measuring piece is a flat plate structure, the thickness of which is adapted to the groove width of the slide groove, the thickness of the lower end portion is adapted to the width of the engraved line on the positioning ring to be measured, and can be placed within the engraved line; the width of the measuring piece is greater than the distance between the inner side surfaces of the two protrusions, and is adapted to the distance between the two bottoms of the slide groove; the distance between the inner side surfaces of the two protrusions is greater than the width of the flat hole on the positioning ring to be measured.

[0013] Furthermore, it also includes a screw and a screw hole arranged on the side of the base and adapted to the screw; a limit hole is provided at the center of the measuring piece; the aperture of the limit hole is defined as R1, the diameter of the screw is R2, the diameter of the screw head is R3, and the depth of the engraved line is H, then: R1-R2≥H, R1≤R3, so that the measuring piece can float up and down in the slide groove without falling out of the slide groove.

[0014] Furthermore, the base is a semi-cylindrical structure, wherein the bottom surface of the base is one of the end surfaces of the semi-cylindrical structure, the side surface is a section perpendicular to the end surface, and two grooves symmetrical along the axial mid-plane are axially opened on the side away from the section surface. The setting of the grooves is conducive to the measurement personnel holding the base and pushing it forward and backward, thereby improving the measurement efficiency.

[0015] Furthermore, a weight-reducing hole is provided on a side of the semi-cylindrical structure away from the side surface, thereby reducing the weight of the base.

[0016] Furthermore, the base is a rectangular block structure, which is convenient for processing and manufacturing of tooling.

[0017] Furthermore, the lower end of the protrusion is higher than the bottom surface of the base, which makes it easy to observe whether the lower end of the measuring piece falls into the scale line of the positioning circle to be measured as a whole.

[0018] Furthermore, the width of the side surface is smaller than the outer diameter of the positioning ring to be measured, so that the overall size of the auxiliary tooling is smaller.

[0019] Furthermore, the measuring piece is a knife-edge ruler, and the blade end of the knife-edge ruler faces downward, and the thickness of the blade end is adapted to the width of the engraved line on the positioning circle to be measured, so that the blade end can easily enter the turning point between the engraved line and the small step.

[0020] Furthermore, the aperture R1 of the limiting hole is 5 mm larger than the diameter R2 of the screw rod, so that the measuring piece can float up and down by 2.5 mm.

[0021] Furthermore, the base is made of 2Cr13 stainless steel, and the screw is made of 0Cr18Ni9 stainless steel. The selection of such materials not only facilitates measurement, but also increases the service life of the auxiliary tooling.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. The auxiliary tooling for detecting the positioning ring of the stator bearing cylinder of the TRT unit provided by the utility model not only improves the detection efficiency through the coordinated use of the base and the measuring piece, but also eliminates the restriction on the operating proficiency of the operator, thereby realizing the auxiliary detection of the positioning ring.

[0024] 2. The auxiliary tooling provided by the utility model for detecting the positioning ring of the stator bearing cylinder of the TRT unit also includes a screw and a screw hole arranged on the side of the base and adapted to the screw. At the same time, a limit hole is provided at the center of the measuring piece. The screw passes through the limit hole and enters the screw hole to flexibly connect the measuring piece with the base so that the measuring piece can float up and down. This design can not only adapt to the measurement of different depth scales, but also prevent the measuring piece from sliding without restriction or accidentally falling, so that the measuring piece and the base can be moved up and down the inspection table at the same time.

[0025] 3. In the auxiliary tooling for detecting the positioning ring of the stator bearing cylinder of the TRT unit provided by the utility model, the design of the base is relatively flexible. It can be a block structure for easy processing; it can also be a semi-cylindrical structure, and two grooves are processed on the side away from the side for easy grasping and pushing.

[0026] 4. In the auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of the TRT unit provided by the utility model, the lower end of the protrusion is higher than the bottom surface of the base. This design makes it easy to observe whether the lower end of the measuring piece falls into the scale line of the positioning ring to be measured as a whole, thereby improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the use state of an embodiment of the utility model;

[0028] Figure 2It is a schematic diagram of the structure of an embodiment of the utility model;

[0029] Figure 3 It is a structural cross-sectional view of an embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of a semi-cylindrical structure of the base in the embodiment of the utility model;

[0031] Figure 5 A three-dimensional diagram of a base in an embodiment of the utility model having a semi-cylindrical structure;

[0032] Figure 6 This is a schematic diagram of the structure of the measuring member in the embodiment of the utility model;

[0033] Figure 7 This is a schematic diagram of a block structure of the base in the embodiment of the utility model.

[0034] Reference numerals:

[0035] 1-base, 11-side, 12-bottom, 13-protrusion, 14-slide, 15-screw hole, 16-groove, 17-weight reduction hole, 2-measuring piece, 21-limiting hole, 3-positioning ring to be measured, 31-marked line, 32-flat hole, 4-screw. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] like Figure 1 As shown, the utility model provides an auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of the TRT unit, which is used for auxiliary measurement of the characteristic data of the engraved line 31 on the positioning ring 3 to be measured, wherein the positioning ring 3 to be measured is provided with a flat hole 32, and generally, the connecting line of the engraved line 31 needs to pass through the center of the flat hole 32. The auxiliary tooling for positioning ring detection in this embodiment includes a base 1 and a measuring piece 2, and the tooling is easy to operate and can realize rapid positioning and measurement of the engraved line 31.

[0038] Combination Figures 1 to 5 As shown, the base 1 is provided with a side surface 11 and a bottom surface 12 which are perpendicular to each other; protrusions 13 are provided on both sides of the side surface 11, and a slide groove 14 is provided between the inner side of the protrusion 13 and the side surface 11. The lower end of the protrusion 13 is generally required to be higher than the bottom surface 12 of the base 1, so as to facilitate observation of whether the lower end of the measuring piece 2 enters the engraved line 31.

[0039] The measuring piece 2 is a flat plate structure, the thickness of which matches the width of the chute 14, the thickness of the lower end matches the width of the scale line 31 on the positioning ring 3 to be measured, and can be placed in the scale line 31. The width of the measuring piece 2 is greater than the distance between the inner sides of the two protrusions 13, and matches the distance between the bottoms of the two chute 14. The distance between the inner sides of the two protrusions 13 is greater than the width of the flat hole 32 on the positioning ring 3 to be measured.

[0040] In this embodiment, the width of the side surface 11 is smaller than the outer diameter of the positioning ring 3 to be measured, so that the overall volume of the auxiliary tooling is small and easy to handle and operate.

[0041] Combination Figures 2 to 4 As shown, this embodiment also includes a screw rod 4 and a screw hole 15 arranged on the side 11 of the base 1 and adapted to the screw rod 4. The measuring piece 2 can be a knife edge ruler, which needs to be processed into a flat plate structure matching the slide groove 14, and the blade end of the knife edge ruler faces downward, the thickness of the blade end is 0.2mm, one side is an inclined surface, and the other side is a straight surface, which is used for measuring parts with engraved lines, and can also be used to detect the boundary position of parts with small step surfaces. The design of the blade end makes it easy to enter the turning point of the engraved lines and small steps. The knife edge ruler is made of T10 carbon tool steel to ensure that it has sufficient positioning rigidity and service life.

[0042] In addition, a limit hole 21 ( Figure 6 As shown), the aperture R1 of the limit hole 21 is generally 5 mm larger than the diameter R2 of the screw 4, so that after the screw 4 passes through the limit hole 21 and is connected to the screw hole 15, the blade ruler can float up and down by 2.5 mm, so as to adapt to the auxiliary measurement of the scale lines of different depths. In this embodiment, R1-R2≥H, R1≤R3, wherein R3 is the diameter of the head of the screw 4, and H is the depth of the scale line 31. In addition, when it is necessary to perform an auxiliary measurement of the scale line 31 of another positioning ring 3 to be measured, the screw 4 passes through the connection between the limit hole 21 and the screw hole 15, so that the blade ruler is connected to the base 1, so as to facilitate the auxiliary tooling to go up and down the inspection table, thereby improving the detection efficiency.

[0043] Combination Figure 1 and Figure 4 As shown, the base 1 is a semi-cylindrical structure, and the bottom surface 12 of the base 1 is one of the end surfaces of the semi-cylindrical structure, which matches the shape of the positioning circle 1 to be measured. The side surface 11 is a section perpendicular to the end surface, and two grooves 16 symmetrical along the axial mid-plane are axially opened on the side away from the section, so that the base 1 is easy to grasp and push when moving on the positioning circle 3 to be measured. In addition, a weight-reducing hole 17 can be processed on the base 1 to reduce the weight of the base 1. The design of the base 1 improves the convenience and rationality of the tooling application operation, and also makes the overall structure more compact.

[0044] like Figure 7 As shown, based on actual design requirements, the base 1 can also be designed as a rectangular block structure, which is easy to process. The base 1 can be made of 2Cr13 stainless steel, and the screw can be made of 0Cr18Ni9 stainless steel. The selection of such materials is not only convenient for measurement, but also can increase the service life of the auxiliary tooling. The corresponding material can also be selected according to actual measurement requirements.

[0045] Combination Figures 1 to 7 The method of using the auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of the TRT unit in this embodiment is as follows:

[0046] The base 1, the measuring piece 2 and the screw 4 are assembled into one piece in sequence, and the measuring piece 2 can float up and down in the slide 14. When in use, the tool is placed on the side of the positioning circle 3 to be measured with the scale line 31, and is gently moved in the direction perpendicular to the scale line 31 on the surface of the positioning circle 3 to be measured. During the movement, when the measuring piece 2 reaches the scale line 31, it can use its own weight to slide down in the slide 14, and then automatically fall into the scale line 31, so as to achieve the braking of the tool as a whole, and at the same time, the positioning of the measuring piece 2 on the scale line 31 is completed, and the scale line 31 is extended parallel to the space perpendicular to the positioning circle 3 to be measured, so as to achieve fast and accurate scale line positioning, and then cooperate with the measuring ball of the three-dimensional coordinate measuring machine and the corresponding measurement software to achieve the auxiliary measurement of the characteristic data of the scale line 31.

[0047] This embodiment greatly improves the accuracy and efficiency of the positioning ring detection through the production and use of the auxiliary tooling, which not only meets the timeliness of the positioning ring batch detection, but also avoids the problem of confusion in installation. At the same time, the accuracy and adaptability of the auxiliary tooling have been generally recognized through actual application.

[0048] Based on the above embodiments, ordinary technicians are sufficient to implement the content of the utility model. Within the framework of the claims, any improvement based on the idea of ​​the utility model is deemed to fall within the protection scope of the utility model.

Claims

1. An auxiliary tool for detecting a positioning ring of a stationary blade bearing cylinder of a TRT unit, used for auxiliary measurement of characteristic data of a scale line (31) on a positioning ring (3) to be measured, wherein a flat hole (32) is provided on the positioning ring (3) to be measured; characterized in that: It comprises a base (1) and a measuring piece (2); The base (1) is provided with a side surface (11) and a bottom surface (12) which are perpendicular to each other; protrusions (13) are respectively provided on both sides of the side surface (11), and a sliding groove (14) is provided between the inner side of the protrusion (13) and the side surface (11); The measuring piece (2) is a flat plate structure, the thickness of which matches the groove width of the slide groove (14), the thickness of the lower end portion matches the width of the engraved line (31) on the positioning ring (3) to be measured, and can be placed in the engraved line (31); the width of the measuring piece (2) is greater than the distance between the inner side surfaces of the two protrusions (13), and matches the distance between the groove bottoms of the two slide grooves (14); the distance between the inner side surfaces of the two protrusions (13) is greater than the width of the flat hole (32) on the positioning ring (3) to be measured.

2. The auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of a TRT unit according to claim 1 is characterized in that: It also includes a screw rod (4) and a screw hole (15) arranged on the side surface (11) of the base (1) and adapted to the screw rod (4); a limiting hole (21) is arranged at the center of the measuring piece (2); the diameter of the limiting hole (21) is defined as R1, the diameter of the screw rod (4) is defined as R2, the diameter of the head of the screw rod (4) is defined as R3, and the depth of the engraved line (31) is defined as H, then: R1-R2≥H, R1≤R3.

3. The auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of a TRT unit according to claim 2 is characterized in that: The base (1) is a semi-cylindrical structure, wherein the bottom surface (12) of the base (1) is one of the end surfaces of the semi-cylindrical structure, the side surface (11) is a section perpendicular to the end surface, and two grooves (16) symmetrical along the axial midplane are axially opened on a side away from the section.

4. The auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of a TRT unit according to claim 3 is characterized in that: A weight-reducing hole (17) is also provided on a side of the semi-cylindrical structure away from the side surface (11).

5. The auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of a TRT unit according to claim 2 is characterized in that: The base (1) is a rectangular block structure.

6. The auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of a TRT unit according to any one of claims 1 to 5, characterized in that: The lower end of the protrusion (13) is higher than the bottom surface (12) of the base (1).

7. The auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of a TRT unit according to claim 6 is characterized in that: The width of the side surface (11) is smaller than the outer diameter of the positioning ring (3) to be measured.

8. The auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of a TRT unit according to claim 7 is characterized in that: The measuring piece (2) is a knife-edge ruler, and the blade end of the knife-edge ruler faces downward, and the thickness of the blade end is adapted to the width of the engraved line (31) on the positioning ring (3) to be measured.

9. The auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of a TRT unit according to claim 2 is characterized by: The hole diameter R1 of the limiting hole (21) is 5 mm larger than the diameter R2 of the screw rod (4).

10. The auxiliary tooling for detecting the positioning ring of the stationary blade bearing cylinder of a TRT unit according to claim 9 is characterized in that: The base (1) is made of 2Cr13 stainless steel; the screw (4) is made of 0Cr18Ni9 stainless steel.

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