A plug gauge for detecting impeller shaft hole

Abstract

The utility model discloses a plug gauge for detecting an impeller shaft hole, comprising a handle with an external thread at the bottom end and a first through end with an internal thread inside, the handle bottom end is threadedly matched with the first through end, a stop end is arranged at the top end of the handle, a second through end and a third through end are arranged inside the handle and the first through end, and a first cylinder body and a second cylinder body are respectively installed at the bottom ends of the second through end and the third through end. The second through end and the third through end are installed inside the handle and the first through end, and when facing impeller shaft holes of different specifications, the second through end and the third through end are moved out from the inside of the handle and the first through end, and the user presses against the first slider and the second slider, so that the second through end and the third through end are fixed at the position outside the first through end, and the impeller shaft holes of different specifications are detected according to the second through end and the third through end, and the detection is completed without the need to replace the plug gauge multiple times, and the overall operation is more convenient, one object can be used for multiple purposes, and the cost required for detection is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of impeller shaft hole detection, in particular to a plug gauge for impeller shaft hole detection. Background Art

[0002] The impeller is an important mechanical component. It refers to the wheel disc with moving blades, which is a component of the impulse turbine rotor. At the same time, it can also refer to the general term for the wheel disc and the rotating blades installed on it. The main function of the impeller is to convert the mechanical energy of the prime mover into the static pressure energy and dynamic pressure energy of the working fluid. In different machines, the impeller plays different roles. For example, in a centrifugal pump, the impeller is a rotating body with blades that transfers energy to the liquid; in a centrifugal compressor, the impeller is a concentrated work element, and the gas obtains energy in its flow channel; in a hydraulic coupling, The impeller is a working wheel with one or more rows of blades. The impeller shaft hole is a very important part of the impeller. It not only ensures the stable connection between the impeller and the shaft, but also transmits power so that the impeller can work normally. In order to ensure the performance, safety and compliance with regulatory requirements of the impeller equipment, after the impeller is processed, the size of its shaft hole needs to be tested to check whether its aperture is within the tolerance range. Generally, the shaft hole is tested with a plug gauge. Through testing, problems with the shaft hole can be discovered and dealt with in time to ensure the stable operation of the impeller and the overall performance of the equipment.

[0003] The through gauge and the stop gauge of the existing plug gauge are respectively located at the two ends of the handle. When in use, the through gauge can pass through the shaft hole, and the stop gauge can stop the shaft hole. The standard through and stop plug gauges need to be inspected once with the through gauge and the stop gauge respectively, which has low operation efficiency. It is not easy for workers to control the verticality during operation, which leads to dimensional deviation and is not easy to find, which is easy to cause errors, resulting in unqualified parts and affecting product reliability. When faced with impeller shaft holes of different specifications, users need to replace the plug gauge many times to inspect the impeller shaft holes. The overall operation is inconvenient. At the same time, it is necessary to purchase plug gauges of various specifications for inspection, which is inconvenient to use and expensive. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art that when faced with impeller shaft holes of different specifications, the user needs to replace the plug gauge many times to detect the impeller shaft hole, which is inconvenient to operate as a whole, and it is also necessary to purchase plug gauges of various specifications for detection, which is inconvenient to use and expensive. A plug gauge for detecting the impeller shaft hole is proposed to solve the shortcomings of the prior art that when faced with impeller shaft holes of different specifications, the user needs to replace the plug gauge many times to detect the impeller shaft hole, which is inconvenient to use and expensive.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A plug gauge for detecting an impeller shaft hole comprises a handle with an external thread at the bottom end and a first through end with an internal thread inside, the bottom end of the handle is threadedly matched with the first through end, the top end of the handle is provided with a stop end, a second through end and a third through end are provided inside the handle and the first through end, a first cylinder body and a second cylinder body are respectively installed at the bottom ends of the second through end and the third through end, and the third through end and the second cylinder body slide inside the second through end and the first cylinder body.

[0007] Preferably, a slideway is provided on one side of the handle, and a first slider and a second slider are respectively provided on one side of the second through end and the third through end, and the first slider and the second slider slide inside the slideway.

[0008] Preferably, a first round rod and two second round rods are fixed inside the handle, and a gap exists between the first round rod and the two second round rods.

[0009] Preferably, two first slots are formed at the top end of the second through end, and the two first slots match with the two second round rods.

[0010] Preferably, a second slot begins at the top end of the third through end, and the second slot matches the first round rod.

[0011] Preferably, the second through end and the third through end can slide inside the handle and the first through end.

[0012] The utility model has the following beneficial effects:

[0013] 1. The second through end and the third through end are installed inside the handle and the first through end. When facing impeller shaft holes of different specifications, the second through end and the third through end are moved out from the handle and the first through end. The user presses the first slider and the second slider to fix the positions of the second through end and the third through end outside the first through end. The impeller shaft holes of different specifications are inspected according to the second through end and the third through end to complete the inspection. There is no need to replace the plug gauge many times. The overall operation is more convenient, one thing can be used for multiple purposes, and the cost required for inspection is reduced.

[0014] 2. The handle, the first through end and the stop end constitute a plug gauge as a whole. The threaded handle and the first through end are more convenient to disassemble, thereby facilitating the replacement and disassembly of the second through end and the third through end inside the handle and the first through end, which is more convenient to use and simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is one of the overall structural diagrams;

[0016] Figure 2 This is the second schematic diagram of the overall structure;

[0017] Figure 3 This is the exploded diagram of the overall structure;

[0018] Figure 4 It is a schematic cross-sectional view of the overall structure.

[0019] In the figure: 1, handle; 101, slide; 102, first round rod; 103, second round rod; 2, first through end; 3, stop end; 4, second through end; 401, first cylinder; 402, first slot; 403, first slider; 5, third through end; 501, second cylinder; 502, second slot; 503, second slider. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4 A plug gauge for detecting an impeller shaft hole comprises a handle 1 with an external thread at the bottom end and a first through end 2 with an internal thread inside, the bottom end of the handle 1 is threadedly matched with the first through end 2, a stop end 3 is arranged at the top end of the handle 1, a second through end 4 and a third through end 5 are arranged inside the handle 1 and the first through end 2, the second through end 4 and the third through end 5 can both slide inside the handle 1 and the first through end 2, a first cylinder 401 and a second cylinder 501 are respectively installed at the bottom ends of the second through end 4 and the third through end 5, the third through end 5 and the second cylinder 501 slide inside the second through end 4 and the first cylinder 401, the first through end 2, the second through end 4 and the third through end 5 can be selected according to the user's personal needs, and used in the detection operation of impeller shaft holes of different specifications, thereby improving the use range of the plug gauge and ensuring the use of the user.

[0022] A slideway 101 is provided on one side of the handle 1, and a first slider 403 and a second slider 503 are respectively provided on one side of the second through end 4 and the third through end 5, and the first slider 403 and the second slider 503 slide inside the slideway 101, and a first round rod 102 and two second round rods 103 are fixed inside the handle 1, and there is a gap between the first round rod 102 and the two second round rods 103, and two first slots 402 are provided at the top of the second through end 4, and the two first slots 402 cooperate with the two second round rods 103, and a second slot 502 starts at the top of the third through end 5, and the second slot 502 cooperates with the first round rod 102, and when the second through end 4 and the third through end 5 are not in use, they can be limited by the first round rod 102 and the two second round rods 103 inside the handle 1, so that the user only uses the first through end 2 to detect the impeller shaft hole.

[0023] When using a plug gauge for detecting an impeller shaft hole, the third through end 5 is passed through the inside of the second through end 4, and then the second through end 4 and the third through end 5 are placed inside the handle 1. The first slider 403 and the second slider 503 of the second through end 4 and the third through end 5 both slide inside the slideway 101, and the first through end 2 is threadedly fitted on the bottom end of the handle 1. The handle 1, the first through end 2 and the stop end 3 constitute a plug gauge as a whole. The threadedly mounted handle 1 and the first through end 2 are more convenient to disassemble, thereby facilitating the replacement and disassembly of the second through end 4 and the third through end 5 inside the handle 1 and the first through end 2. The use is more convenient and the operation is simple. The two first slots 402 of the second through end 4 cooperate with the two second round rods 103. The second card groove 502 of the third through end 5 cooperates with the first round rod 102 to ensure that the second through end 4 and the third through end 5 can be limited inside the handle 1 and the first through end 2 to fix their positions. When detecting impeller shaft holes of different specifications, the first slider 403 and the second slider 503 on the slide 101 are pushed according to the user's needs, so that the second through end 4 and the third through end 5 can be moved out from the handle 1 and the first through end 2. The user can then press the first slider 403 and the second slider 503 to fix the second through end 4 and the third through end 5 at the outside of the first through end 2, and then perform detection operations on the impeller shaft holes of different specifications according to the second through end 4 and the third through end 5 to complete the detection.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plug gauge for detecting an impeller shaft hole, comprising a handle (1) with an external thread at the bottom end and a first through end (2) with an internal thread inside, characterized in that: The bottom end of the handle (1) is threadedly matched with the first through end (2), and the top end of the handle (1) is provided with a stop end (3). The second through end (4) and the third through end (5) are provided inside the handle (1) and the first through end (2), and the bottom ends of the second through end (4) and the third through end (5) are respectively installed with the first cylinder (401) and the second cylinder (501), and the third through end (5) and the second cylinder (501) slide inside the second through end (4) and the first cylinder (401).

2. The plug gauge for detecting the impeller shaft hole according to claim 1, characterized in that: A slideway (101) is provided on one side of the handle (1), and a first slider (403) and a second slider (503) are provided on one side of the second through end (4) and the third through end (5), respectively. The first slider (403) and the second slider (503) slide inside the slideway (101).

3. The plug gauge for detecting the impeller shaft hole according to claim 2, characterized in that: A first round rod (102) and two second round rods (103) are fixed inside the handle (1), and a gap exists between the first round rod (102) and the two second round rods (103).

4. The plug gauge for detecting the impeller shaft hole according to claim 3, characterized in that: Two first clamping grooves (402) are formed at the top of the second through end (4), and the two first clamping grooves (402) are matched with the two second round rods (103).

5. The plug gauge for detecting the impeller shaft hole according to claim 3, characterized in that: A second slot (502) begins at the top end of the third through end (5), and the second slot (502) matches the first round rod (102).

6. The plug gauge for detecting the impeller shaft hole according to claim 1, characterized in that: The second through end (4) and the third through end (5) can both slide inside the handle (1) and the first through end (2).

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