Rotor support rib groove distance measuring device

Abstract

The utility model relates to the technical field of water turbines, in particular to a rotor support rib groove distance measuring device which comprises a first rod body and a second rod body, the first rod body and the second rod body are connected in a sliding mode, and positioning pieces are fixedly connected to the opposite ends of the first rod body and the second rod body. The first rod body further fixes the second rod body through a locking assembly; wherein the locking assembly comprises a fixed part and a movable part, and the movable part is fixed with the fixed part through a clamping structure, so that the second rod body is fixed in the mode that the second rod body freely slides and the elastic part abuts against the second rod body; the distance of the rib groove to be measured is detected through the scale strip on the periphery of the second rod body and the actual length of the first rod body, the situation that measurement is affected by sliding of the rod bodies in the measurement process can be prevented, in addition, the movable part and the fixed part are fixed through the clamping structure, the second rod body can freely slide, and measurement is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of water turbine technology, and in particular to a rotor support groove distance measuring device. Background Technology

[0002] The rotor support of a water turbine, commonly known as the runner support or wheel support, is a key component of the water turbine. Its main function is to support and fix the runner (rotor), ensuring the stability and concentricity of the runner when rotating at high speed, and at the same time, transmitting the torque generated by the runner to other parts of the water turbine.

[0003] The ribs of the rotor support refer to the grooves machined on the rotor support. These grooves are used to fix and support the ribs (or blades) of the rotor. Measuring the distance between the ribs ensures the safety and reliability of the support. Existing technology, Chinese Patent Publication No. "CN102528139A", discloses a machining process for the keyway in the inner hole of a large electric motor rotor support. This process uses a CNC boring and milling machine equipped with a special tool to machine the keyway in the inner hole of the large electric motor rotor support. The special tool is a common end mill, the length of which is determined according to the size of the inner hole, shortened by wire cutting, and then the end face cutting edge is re-opened to allow for both vertical feed and high cutting speed. The beneficial technical effect of this invention's machining process for the keyway in the inner hole of a large electric motor rotor support is that the CNC equipment can accurately find the center of the inner hole, thus ensuring the dimensional accuracy and symmetry of the keyway, and significantly improving machining efficiency by nearly 10 times.

[0004] In practical operation, the rib grooves of the rotor support refer to the grooves machined on the rotor support. These grooves are used to fix and support the ribs of the rotor. The keyway is machined but cannot be inspected, which affects the processing efficiency of the subsequent support. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies that process keyways but cannot detect them, and to propose a rotor support rib groove distance measuring device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a rotor support groove distance measuring device, including a first rod and a second rod, the first rod and the second rod are slidably connected, positioning components are fixedly connected to the opposite ends of the first rod and the second rod, and the first rod is also fixed to the second rod by a locking assembly;

[0008] The locking assembly includes a fixed part and a movable part. The movable part is fixed to the fixed part by a snap-fit ​​structure, so that the second rod can slide freely.

[0009] Furthermore, the locking assembly also includes a limiting part, the end of the first rod is fixedly connected to the fixing member and the limiting part, and its end is slidably connected to the movable member through a compression spring between the fixing member and the limiting part, the movable member abutting against the limiting part.

[0010] Furthermore, at least one through groove is provided at the end of the first rod, and an elastic element is provided in the through groove. The inner wall of the movable element is a cone shape with a diameter that gradually decreases upward. The movable element avoids the elastic element through the concave portion at the top of the inner wall and abuts against the elastic element through the convex portion at the bottom of the inner wall, so that the elastic element presses against the second rod.

[0011] Furthermore, the snap-fit ​​structure includes two extensions. One end of the movable member extends outward from the periphery of the compression spring to form two symmetrically arranged extensions. The periphery of the two extensions is provided with snap-fit ​​grooves with opposite opening directions.

[0012] Furthermore, the fastener is fixedly connected to two sides of its end with a locking rod, wherein the locking groove has an L-shaped structure and one bent end extends upward to form a locking part, and the locking rod is slidably connected in the locking groove and locking with the locking part.

[0013] Furthermore, a scale bar is provided on the periphery of the second rod, and the zero point of the scale bar is located at the end of the second rod near the positioning member.

[0014] The present invention provides a rotor support groove distance measuring device, which has the following advantages: The present invention fixes the second rod by having a movable part abut against an elastic part, and the elastic part presses against the second rod. The distance of the groove to be measured is detected by adding the actual length of the first rod to the scale strip around the second rod. Because the two rods are fixed to each other, it can prevent the rod from sliding during the measurement process and affecting the measurement. In addition, the movable part and the fixed part are fixed by a snap-fit ​​structure, thereby unlocking the second rod and allowing the second rod to slide freely for easy measurement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A magnified structural diagram of area A;

[0017] Figure 3 This is a schematic diagram of the snap-fit ​​structure of this utility model;

[0018] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of region B;

[0019] Figure 5 Figure 1 is a sectional view of the locking assembly of the utility model.

[0020] Figure 1 is a sectional view of the locking assembly of the utility model. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] Referring to Figures 1-5 A rotor support rib groove distance measuring device, comprising a first rod body 1 and a second rod body 2, the first rod body 1 and the second rod body 2 are slidingly connected, and a positioning piece 3 is fixedly connected to the opposite ends of the first rod body 1 and the second rod body 2, and the first rod body 1 further fixes the second rod body 2 through a locking assembly 4.

[0023] The locking assembly 4 comprises a fixed part 41 and a movable part 42, the movable part 42 is fixed with the fixed part 41 through a clamping structure 5, so that the second rod body 2 can slide freely.

[0024] Further, the opposite ends of the first rod body 1 and the second rod body 2 are fixedly connected with the positioning piece 3, and the positioning piece 3 is used for supporting a pair of rods to facilitate distance measurement of the rib groove.

[0025] Further, the locking assembly 4 further comprises a limiting part 43, the end of the first rod body 1 is fixedly connected with the fixed part 41 and the limiting part 43, and the end thereof is located between the fixed part 41 and the limiting part 43 and is further slidingly connected with the movable part 42 through a compression spring 44, and the movable part 42 abuts against the limiting part 43.

[0026] The two ends of the compression spring 44 respectively abut against the end of the movable part 42 and the fixed part 41, the compression spring 44 pushes the movable part 42 to move upward through elastic support, and the convex part at the bottom of the movable part 42 abuts against the elastic part 45.

[0027] Further, at least one through slot is arranged at the end of the first rod body 1, and an elastic member 45 is arranged in the through slot, wherein the inner wall of the movable member 42 is in a tapered shape with a diameter gradually decreasing upwards, the elastic member 45 is avoided by the recessed part at the top of the inner wall of the movable member 42, and the elastic member 45 is abutted by the protruding part at the bottom of the inner wall of the movable member 42, so that the elastic member 45 is abutted against the second rod body 2.

[0028] It is worth mentioning that the elastic member 45 is in a cylindrical shape, and is preferably made of rubber, silica gel or other materials with deformation and certain elastic ability.

[0029] Further, the movable member 42 moves upwards under the action of the compression spring 44, and the movable member 42 abuts against the elastic member 45 by the protruding part at the bottom of the inner wall of the movable member 42, and the elastic member 45 is driven to abut against the outer wall of the second rod body 2, and the second rod body 2 is locked and fixed by the friction generated by the abutment.

[0030] It should be noted that the recessed part at the top of the inner wall of the movable member 42 is used to avoid the elastic member 45, but will not be separated from the elastic member 45.

[0031] In more detail, the clamping structure 5 includes two extension parts 51, one end of the movable member 42 extends outwardly to form two symmetrical extension parts 51 outside the compression spring 44, and the two extension parts 51 are provided with clamping grooves 52 with opposite opening directions.

[0032] In general, the end of the fixing member 41 is fixedly connected with clamping rods 53 on both sides, wherein the clamping groove 52 is in an L-shaped structure, the bending end of which extends upwardly to form a clamping part 521, and the clamping rod 53 is slidingly connected in the clamping groove 52 and clamped with the clamping part 521.

[0033] In this embodiment, the end of the movable member 42 abuts against the compression spring 44, and rotating the movable member 42 does not affect the compression spring 44, further, moving the movable member 42 downwards to avoid the elastic member 45 by the recessed part at the top of the inner wall of the movable member 42, and unlocking the second rod body 2 to enable it to slide freely.

[0034] Wherein, the clamping rod 53 slides along the clamping groove 52, and after sliding to a specified position, the movable member 42 is rotated to make the clamping rod 53 arranged at the bending end of the clamping groove 52, and the movable member 42 is reset under the action of the compression spring 44, so that the clamping rod 53 is clamped in the clamping part 521 for fixation.

[0035] Finally, a scale bar 21 is arranged at the periphery of the second rod body 2, and the zero point of the scale bar 21 is arranged at one end of the second rod body 2 close to the positioning member 3.

[0036] It should be noted that after the second rod body 2 is fixed, because the zero point is set at the end of the second rod body 2 close to the positioning member 3, the end of the first rod body 1 away from the positioning member 3 can indicate the scale of the scale bar 21.

[0037] The width of the rib groove is read, and in addition to the indicated length of the scale bar 21, the length of the first rod body 1 and the length of the positioning member 3 on both sides can be added as needed to obtain complete length data. The lengths of the first rod body 1 and the positioning member 3 are preferably set to integers for easy reading.

[0038] The working mode is as follows: when working, the first rod body 1 and the second rod body 2 are fixed by the positioning members 3 on both sides, then the movable member 42 is rotated to disengage the clamping rod 53 from the clamping portion 521, after that the movable member 42 is reset under the action of the compression spring 44, after resetting, the movable member 42 abuts against the elastic member 45 through the protruding portion at the bottom of the inner wall, the elastic member 45 is driven to abut against the second rod body 2, and the second rod body 2 is locked by friction fixation. After the second rod body 2 is fixed, the width of the rib groove is read in combination with the length of the first rod body 1.

[0039] In the description of the present specification, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the technical solutions of the present patent and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present patent application.

[0040] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present patent application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited.

[0041] In this specification, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connecting", "fixed", and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements, unless otherwise expressly limited. For those skilled in the art, the specific meaning of the above terms in this specification can be understood according to the specific circumstances.

[0042] In this specification, unless otherwise expressly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0043] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0044] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the utility model.

Claims

1. A rotor support groove distance measuring device, comprising a first rod (1) and a second rod (2), characterized in that: The first rod (1) and the second rod (2) are slidably connected. Positioning components (3) are fixedly connected to the opposite ends of the first rod (1) and the second rod (2). The first rod (1) is also fixed to the second rod (2) by a locking assembly (4). The locking assembly (4) includes a fixed part (41) and a movable part (42). The movable part (42) is fixed to the fixed part (41) by a snap-fit ​​structure (5) so that the second rod (2) can slide freely.

2. The rotor support groove distance measuring device according to claim 1, characterized in that: The locking assembly (4) further includes a limiting part (43). The end of the first rod (1) is fixedly connected to the fixing member (41) and the limiting part (43), and its end is slidably connected to the movable member (42) between the fixing member (41) and the limiting part (43) via a compression spring (44). The movable member (42) abuts against the limiting part (43).

3. The rotor support groove distance measuring device according to claim 2, characterized in that: At least one through groove is provided at the end of the first rod (1), and an elastic member (45) is provided in the through groove. The inner wall of the movable member (42) is a cone shape with a diameter that gradually decreases upward. The movable member (42) avoids the elastic member (45) through the recessed part at the top of the inner wall and abuts the elastic member (45) through the protruding part at the bottom of the inner wall, so that the elastic member (45) abuts against the second rod (2).

4. The rotor support groove distance measuring device according to claim 2, characterized in that: The snap-fit ​​structure (5) includes two extensions (51). One end of the movable member (42) extends outward from the periphery of the compression spring (44) to form two symmetrically arranged extensions (51). The periphery of the two extensions (51) is provided with snap-fit ​​grooves (52) with opposite opening directions.

5. The rotor support groove distance measuring device according to claim 4, characterized in that: The fastener (41) has a locking rod (53) fixedly connected to both sides of its end. The locking groove (52) has an L-shaped structure and one of its bent ends extends upward to form a locking part (521). The locking rod (53) is slidably connected in the locking groove (52) and locks with the locking part (521).

6. The rotor support groove distance measuring device according to claim 1, characterized in that: A scale bar (21) is provided on the periphery of the second rod (2), and the zero point of the scale bar (21) is set at the end of the second rod (2) near the positioning member (3).

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