A kind of detection and verification shaft bending, impeller static balancing frock

Abstract

The utility model discloses a kind of detection efficiency and verify shaft bending, impeller static balance tool, belong to detection tool field.A kind of detection efficiency and verify shaft bending, impeller static balance tool, including support frame and install the U-shaped frame on the support frame, further including at least two connecting rods slidingly connected on the U-shaped frame, bearing is set on two the connecting rod, the adjusting member that the relative motion and opposite motion of two bearings are driven is equipped on the U-shaped frame, V-shaped groove is opened on the U-shaped frame, lifting piece for the height adjustment of U-shaped frame is equipped on the support frame;The utility model is adjusted to the spacing adjustment of two bearings by adjusting member, different specifications of impeller main shaft can be limited, to improve the detection quality of impeller main shaft, simultaneously, the height adjustment of bearing using lifting piece, different height impeller main shaft can be supported, to improve the flexibility and practicality of device.

Description

Technical Field

[0001] This utility model relates to the field of testing tooling technology, and in particular to a tooling for testing and verifying shaft bending and impeller static balancing. Background Technology

[0002] An impeller can refer to a wheel disk equipped with moving blades, which is a component of the rotor of an impulse steam turbine, or it can refer to the wheel disk and the rotating blades mounted on it. Impellers can be classified according to their shape and opening / closing status. After the impeller is manufactured, it needs to undergo static balance testing.

[0003] Currently, when performing static balancing tests on impellers, V-shaped retainers or V-shaped retainers equipped with bearings are needed to support the impeller shaft to prevent axial or radial displacement of the impeller due to centrifugal force during high-speed rotation. This fixing method can effectively reduce vibration and ensure the stability of the impeller in static balancing experiments.

[0004] However, the traditional V-shaped retainer, which is in direct contact with the impeller spindle, increases the friction between them and affects the test data. Secondly, although the V-shaped retainer with bearings can reduce friction, it is not convenient to adjust the spacing between the bearings, which is not conducive to limiting the spindle of different specifications. Furthermore, most V-shaped retainers are fixedly installed on the support frame, which makes it inconvenient to adjust the height, thus reducing the applicability of the V-shaped retainer. Utility Model Content

[0005] The purpose of this invention is to solve the problem that, although the V-type retainer with bearings can reduce friction with the main shaft, it is not convenient to adapt to impeller main shafts of different specifications. Therefore, this invention proposes a tooling for detecting shaft bending and impeller static balance.

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

[0007] A fixture for detecting shaft bending and impeller static balancing includes a support frame and a U-shaped frame mounted on the support frame. It also includes at least two connecting rods slidably connected to the U-shaped frame, each of which is fitted with a bearing. The U-shaped frame is provided with an adjusting component that drives the two bearings to move closer and further apart. The U-shaped frame has a V-shaped groove, and the support frame is provided with a lifting component that adjusts the height of the U-shaped frame.

[0008] For adjusting the bearing spacing, preferably, the adjusting component includes a first lead screw rotatably connected to a U-shaped frame, a first rocker arm fixedly connected to one end of the first lead screw, a first threaded sleeve threadedly connected to the first lead screw, two positioning frames fixedly connected to the first threaded sleeve, a connecting rod rotatably connected inside the positioning frame, and the end of the connecting rod away from the positioning frame rotatably connected to a connecting rod.

[0009] To further limit the first threaded sleeve, a first stop is fixedly connected to the first lead screw, and the first stop is located at the end of the first lead screw away from the first rocker arm.

[0010] To adjust the bearing height for use with impeller shafts of different heights, preferably, the lifting component includes a second lead screw rotatably connected to a support frame. One end of the second lead screw is fixedly connected to a second rocker arm. A second threaded sleeve is threaded onto the second lead screw. Two L-shaped rods are fixedly connected to the second threaded sleeve. The ends of the L-shaped rods away from the second threaded sleeves are fixedly connected to a U-shaped frame. The L-shaped rods are slidably connected within the support frame.

[0011] To further limit the second threaded sleeve, a second stop is fixedly connected to the second lead screw, and the second stop is located at the end of the second lead screw away from the second rocker arm.

[0012] To limit the lateral movement of the connecting rod, preferably, the U-shaped frame has 2 to 4 transverse grooves, and the connecting rod is slidably connected in the transverse grooves.

[0013] Compared with the prior art, this utility model provides a tooling for detecting and verifying shaft bending and impeller static balancing, which has the following beneficial effects:

[0014] 1. This testing and verification fixture for shaft bending and impeller static balancing can limit the connecting rod by setting a transverse groove, thereby improving the stability of the bearing's lateral movement;

[0015] 2. This testing and verification fixture for shaft bending and impeller static balance, by setting up a lifting component and rotating the second rocker arm, causes the second threaded sleeve to drive two L-shaped rods to move vertically, which can adjust the height of the bearing and increase the bearing's support range for the impeller main shaft.

[0016] The parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model can limit the impeller main shaft of different specifications by adjusting the distance between the two bearings through the adjusting component, thereby improving the detection quality of the impeller main shaft. At the same time, by using the lifting component to adjust the height of the bearings, it can support impeller main shafts of different heights, thereby improving the flexibility and practicality of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a tooling for detecting and verifying shaft bending and impeller static balancing proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the U-shaped frame structure of the tooling for detecting shaft bending and impeller static balance proposed in this utility model.

[0019] Figure 3 This is a partial exploded view of the structure of a tooling for detecting shaft bending and impeller static balancing proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the adjusting component structure of a tooling for detecting shaft bending and impeller static balancing proposed in this utility model.

[0021] Figure 5 This is a cross-sectional schematic diagram of the support frame structure of a tooling for detecting shaft bending and impeller static balancing proposed in this utility model.

[0022] In the diagram: 1. Support frame; 2. U-shaped frame; 3. Connecting rod; 4. Bearing; 5. First lead screw; 51. First rocker arm; 52. First threaded sleeve; 53. Positioning frame; 54. Connecting rod; 55. First stop block; 6. V-groove; 7. Second lead screw; 71. Second rocker arm; 72. Second threaded sleeve; 73. L-shaped rod; 74. Second stop block; 8. Transverse groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Example:

[0026] Reference Figures 1-5 A fixture for detecting shaft bending and impeller static balancing includes a support frame 1 and a U-shaped frame 2 mounted on the support frame 1. It also includes at least two connecting rods 3 slidably connected to the U-shaped frame 2. One end of each connecting rod 3 has an external thread with a nut threaded onto it, which limits the position of the connecting rod 3. The other end of each connecting rod 3 has an internal thread with a fixing pin threaded onto it, which limits the position of a connecting rod 54. The U-shaped frame 2 has two to four transverse grooves 8, preferably four. The connecting rods 3 are slidably connected within the transverse grooves 8. Each connecting rod 3 is fitted with a bearing 4. The U-shaped frame 2 has an adjusting element that drives the two bearings 4 to move closer or further apart. The U-shaped frame 2 has a V-shaped groove 6 that limits the position of the impeller main shaft. The support frame 1 has a lifting element that adjusts the height of the U-shaped frame 2.

[0027] Specifically, by adjusting the distance between the two bearings 4 using the adjusting component, the impeller main shafts of different specifications can be limited, thereby improving the detection quality of the impeller main shaft. At the same time, by using the lifting component to adjust the height of the bearings 4, impeller main shafts of different heights can be supported, thereby improving the flexibility and practicality of the device.

[0028] The adjusting component includes a first lead screw 5 rotatably connected to the U-shaped frame 2, a first rocker arm 51 fixedly connected to one end of the first lead screw 5, a first threaded sleeve 52 threadedly connected to the first lead screw 5, two positioning frames 53 fixedly connected to the first threaded sleeve 52, a connecting rod 54 rotatably connected to the positioning frame 53 through a fixing pin, the end of the connecting rod 54 away from the positioning frame 53 being rotatably connected to the connecting rod 3, and a first stop 55 fixedly connected to the first lead screw 5, the first stop 55 being located at the end of the first lead screw 5 away from the first rocker arm 51, the first stop 55 being used to limit the first threaded sleeve 52.

[0029] Specifically, by setting an adjustment component, rotating the first rocker arm 51 causes the first threaded sleeve 52 to drive the two positioning frames 53 to move vertically, which can adjust the distance between the two bearings 4, so that the bearings 4 can limit the movement of impeller main shafts of different specifications.

[0030] The lifting component includes a second lead screw 7 rotatably connected to the support frame 1. One end of the second lead screw 7 is fixedly connected to a second rocker arm 71. A second threaded sleeve 72 is threadedly connected to the second lead screw 7. Two L-shaped rods 73 are fixedly connected to the second threaded sleeve 72. The end of the L-shaped rod 73 away from the second threaded sleeve 72 is fixedly connected to the U-shaped frame 2. The L-shaped rod 73 is slidably connected inside the support frame 1. A second stop 74 is fixedly connected to the second lead screw 7. The second stop 74 is located at the end of the second lead screw 7 away from the second rocker arm 71 and is used to limit the movement of the second threaded sleeve 72.

[0031] Specifically, by setting up a lifting component and rotating the second rocker arm 71, the second threaded sleeve 72 drives the two L-shaped rods 73 to move vertically, which can adjust the height of the bearing 4 and increase the support range of the bearing 4 for the impeller main shaft.

[0032] Working principle: When supporting the impeller main shaft, the operator rotates the second rocker arm 71. When the second rocker arm 71 rotates, it drives the second lead screw 7 to rotate. When the second lead screw 7 rotates, it drives the second threaded sleeve 72 to move. When the second threaded sleeve 72 moves, it drives the two L-shaped rods 73 to move. When the two L-shaped rods 73 move, they drive the U-shaped frame 2 to move. When the U-shaped frame 2 moves, it drives the bearing 4 to move. By adjusting the height of the bearing 4, the impeller main shaft at different heights can be supported, thereby improving the flexibility and practicality of the device.

[0033] During the inspection of the impeller main shaft, the operator rotates the first rocker arm 51. As the first rocker arm 51 rotates, it drives the first lead screw 5 to rotate. As the first lead screw 5 rotates, it drives the first threaded sleeve 52 to move. As the first threaded sleeve 52 moves, it drives the two positioning frames 53 to move. As the two positioning frames 53 move, they drive one end of the two connecting rods 54 to move. At this time, the other end of the connecting rod 54 drives the connecting rod 3 to slide in the inner cavity of the transverse groove 8, which can synchronously adjust the two bearings 4. By adjusting the distance between the bearings 4, the impeller main shafts of different specifications can be limited, thereby improving the inspection quality of the impeller main shaft.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fixture for detecting and verifying shaft bending and impeller static balancing, comprising a support frame (1) and a U-shaped frame (2) mounted on the support frame (1), characterized in that, It also includes at least two connecting rods (3) that are slidably connected to the U-shaped frame (2), and each of the two connecting rods (3) is fitted with a bearing (4). The U-shaped frame (2) is provided with an adjusting component that drives the two bearings (4) to move closer and further apart. The U-shaped frame (2) is provided with a V-shaped groove (6). The support frame (1) is provided with a lifting component that adjusts the height of the U-shaped frame (2).

2. The fixture for detecting and verifying shaft bending and impeller static balancing according to claim 1, characterized in that, The adjusting component includes a first lead screw (5) rotatably connected to the U-shaped frame (2), a first rocker arm (51) fixedly connected to one end of the first lead screw (5), and a first threaded sleeve (52) threadedly connected to the first lead screw (5). Two positioning frames (53) are fixedly connected to the first threaded sleeve (52). A connecting rod (54) is rotatably connected inside the positioning frame (53). The end of the connecting rod (54) away from the positioning frame (53) is rotatably connected to the connecting rod (3).

3. The fixture for detecting and verifying shaft bending and impeller static balancing according to claim 2, characterized in that, A first stop (55) is fixedly connected to the first lead screw (5), and the first stop (55) is located at the end of the first lead screw (5) away from the first rocker arm (51).

4. The fixture for detecting and verifying shaft bending and impeller static balancing according to claim 1, characterized in that, The lifting component includes a second lead screw (7) rotatably connected to the support frame (1), a second rocker arm (71) fixedly connected to one end of the second lead screw (7), and a second threaded sleeve (72) threadedly connected to the second lead screw (7). Two L-shaped rods (73) are fixedly connected to the second threaded sleeve (72). The end of the L-shaped rod (73) away from the second threaded sleeve (72) is fixedly connected to the U-shaped frame (2). The L-shaped rod (73) is slidably connected inside the support frame (1).

5. The fixture for detecting and verifying shaft bending and impeller static balancing according to claim 4, characterized in that, A second stop (74) is fixedly connected to the second lead screw (7), and the second stop (74) is located at the end of the second lead screw (7) away from the second rocker arm (71).

6. The fixture for detecting and verifying shaft bending and impeller static balancing according to claim 1, characterized in that, The U-shaped frame (2) has a horizontal groove (8) with a quantity of 2 to 4, and the connecting rod (3) is slidably connected in the horizontal groove (8).

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