Inspection device for inspecting machining precision of impeller blade of water jet propulsion device

Abstract

The utility model provides an inspection device for inspecting the machining precision of an impeller blade of a water jet propulsion device. The inspection device comprises a bottom plate, a blade-shaped outer ring and a main shaft, wherein the blade-shaped outer ring is cylindrical, the inner diameter of the blade-shaped outer ring is equal to the outer diameter of a detected impeller of the water jet propulsion device, the blade-shaped outer ring is fixedly connected with the bottom plate, the main shaft is installed in the center of the bottom plate and is coaxially arranged with the blade-shaped outer ring, the main shaft can rotate relative to the bottom plate, and the main shaft is matched with a shaft hole of the impeller of the water jet propulsion device. Therefore, the impeller of the water jet propulsion device can be connected to the main shaft. Wherein a blade observation window is machined on the blade-shaped outer ring. The blade-shaped outer ring and the main shaft rotate relatively to adapt to the impeller of the water jet propulsion device, so that after the impeller of the water jet propulsion device is rotated, the outline of the outer circle of the blade is matched with the blade observation window on the blade-shaped outer ring, and whether the outer edge line type and the thickness distribution of the blade meet the machining precision requirement or not can be observed.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection equipment technical field, concretely relates to a kind of detection device for the machining precision inspection of the impeller blade of ship water-jet propulsion device. BACKGROUND

[0002] The impeller blade of water-jet propulsion device is special-shaped structure, and the shape of the blade is irregular shape, and after the completion of impeller processing, the detection of blade space linear machining precision is a problem, and the conventional detection tool cannot meet the machining precision detection of water-jet propulsion device impeller space linear. SUMMARY

[0003] The utility model embodiment solves the technical problems that there is provided a kind of detection device for the machining precision inspection of the impeller blade of water-jet propulsion device, and the machining precision detection problem of the impeller blade of water-jet propulsion device is solved.

[0004] In order to solve the above technical problem, the utility model provides a kind of detection device for the machining precision inspection of the impeller blade space linear of water-jet propulsion device, including bottom plate, blade type outer ring and main shaft, wherein the blade type outer ring is cylindrical shape, the inner diameter of blade type outer ring is equal to the outer diameter of the impeller of water-jet propulsion device to be detected, and blade type outer ring is fixedly connected with bottom plate, main shaft is installed in the center of bottom plate and is coaxially arranged with blade type outer ring, and main shaft can rotate relative to bottom plate, and main shaft is adapted to the shaft hole of water-jet propulsion device impeller, so that water-jet propulsion device impeller can be connected on main shaft;Wherein, blade type outer ring is processed blade observation window, and the edge of the blade observation window is the projection position of the hub of water-jet propulsion device impeller from the axis of main shaft to blade type outer ring.

[0005] The blade observation window is provided with multiple, and is consistent with the projection shape of impeller three-dimensional model, and the distribution of multiple blade observation windows on the circumference of blade type outer ring is also consistent with the distribution of blade around impeller center on impeller three-dimensional model, so as to inspect blade uniform distribution precision.

[0006] The blade type outer ring is connected with bottom plate by tray and fixed flange.

[0007] Corresponding the installation position of the main shaft, bearing mounting groove of replacement is provided on the bottom plate, and the fixed flange is located on the outside of the bearing mounting groove.

[0008] Bearing seat and bearing are installed in the bearing mounting groove, and the top surface of the bearing seat is flush with the top surface of the tray.

[0009] Dust cover is further provided on the bearing seat upper portion, and the dust cover covers the mounting hole of entire fixed flange.

[0010] The utility model provides a kind of for the inspection device of water jet propulsion device impeller blade space linear type processing precision, by the relative rotation of blade type outer ring and main shaft, to adapt water jet propulsion device impeller, to make blade outer edge and the blade observation window on blade type outer ring coincide after rotating water jet propulsion device impeller, so that the outer edge space linear type of blade and thickness can be observed whether it meets processing precision requirement. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the overall structure schematic of the utility model Figure 1 .

[0012] Figure 2 It is the overall structure schematic of the utility model Figure 2 .

[0013] Figure 3 It is the local structure schematic of the utility model Figure 3 .

[0014] Figure 4 It is the main section schematic of the utility model

[0015] Figure 5 It is the side schematic of the utility model of axis of falling

[0016] Figure 6 It is the side schematic of the utility model of axis of rising

[0017] In the drawing:

[0018] 10-base plate;11-tray;12-fixed flange;13-bearing seat;14-dust cover;

[0019] 20-blade type outer ring;21-blade observation window;

[0020] 30-main shaft;

[0021] 40-water jet propulsion device impeller. DETAILED DESCRIPTION

[0022] To make the above purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiment of the utility model is explained in detail in the following with the drawings.In the following description, a lot of specific details are set forth to facilitate a full understanding of the utility model.However, the utility model can be implemented in many other ways different from the description herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the following disclosed specific embodiments.

[0023] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. Where, when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can also be present. As used herein the terms "vertical", "horizontal", "left", "right" and similar expressions are used for explanation purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0025] As shown in the Figure 1-6 The utility model provides a kind of inspection device for water jet propulsion device impeller blade processing precision inspection, including bottom plate 10, blade profile outer ring 20 and main shaft 30, wherein the blade profile outer ring 20 is cylindrical shape, the inner diameter of blade profile outer ring 20 is equal to the outer diameter of the water jet propulsion device impeller 40 to be detected, blade profile outer ring 20 is fixedly connected with bottom plate 10, main shaft 30 is installed in the center of bottom plate 10 and is coaxially arranged with blade profile outer ring 20, main shaft 30 can rotate relative to bottom plate 10, main shaft 30 is adapted with the shaft hole of water jet propulsion device impeller 40, so that water jet propulsion device impeller 40 can be connected on main shaft 30;Wherein, blade profile outer ring 20 is processed blade observation window 21, the outer edge of the blade observation window 21 is the projection position of the rim of water jet propulsion device impeller from the axis of main shaft 30 to blade profile outer ring 20.

[0026] The blade observation window 21 is provided with multiple, and the projection shape of impeller three-dimensional model is consistent, and the distribution of multiple blade observation windows on the circumference of blade profile outer ring is also consistent with the distribution of blade around impeller center on impeller three-dimensional model, to inspect blade uniform distribution precision. Blade observation window 21 is the hollow structure formed on blade profile outer ring 20, the outer edge of internal water jet propulsion device impeller blade can be observed from outside, when water jet propulsion device impeller is rotated, the edge of water jet propulsion device impeller blade can be adjusted with impeller observation window 21, when the outer edge of water jet propulsion device impeller blade is completely consistent with impeller observation window, then it is judged that the linear type and thickness of the impeller blade outer edge meet the processing precision requirement.

[0027] The leaf type outer ring 20 is connected with the bottom plate 10 through the tray 11 and the fixed flange 12, wherein the fixed flange is a cylindrical flange, the two ends of which are flange connecting surfaces, and the middle part is a cylindrical structure; the tray 11 is in a circular ring shape, and the tray is fixedly connected with the flange connecting surface at the top of the fixed flange, and the flange connecting surface at the bottom of the fixed flange is fixedly connected with the bottom plate, so that the leaf type outer ring 20 is fixed on the bottom plate.

[0028] Corresponding to the mounting position of the main shaft 30, a bearing mounting groove is arranged on the bottom plate 10, and the fixed flange is located outside the bearing mounting groove. The bearing mounting groove is in a sunken structure, and forms a space for fixing a bearing.

[0029] A bearing seat 13 and a bearing are mounted in the bearing mounting groove, the top surface of the bearing seat 13 is flush with the top surface of the tray. The bearing is arranged in the bearing seat 13, and the bearing can adopt a double bearing structure, so that the runout during rotation of the main shaft is smaller.

[0030] A dust cover 14 is further arranged on the upper part of the bearing seat, and the dust cover covers the mounting hole of the fixed flange, so that external dust is prevented from entering the mounting hole of the fixed flange.

[0031] The inspection device for processing precision inspection of a water jet propulsion device impeller blade provided by the utility model can adapt to the water jet propulsion device impeller through relative rotation of the leaf type outer ring 20 and the main shaft 30, so that the outer edge of the blade can be observed after the water jet propulsion device impeller is rotated, and whether the outer edge of the blade meets the processing precision requirement can be observed.

[0032] The technical features of the above-described embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict each other, they should be considered as falling within the scope of the present disclosure.

[0033] The above-described embodiments only express the implementation of the utility model, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all fall within the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. An inspection device for checking the machining accuracy of impeller blades in a waterjet propulsion system, comprising a base plate, an outer ring of the blade profile, and a main shaft; characterized in that: The outer ring of the blade profile is cylindrical, and its inner diameter is equal to the outer diameter of the impeller of the water jet propulsion device being tested. The outer ring of the blade profile is fixedly connected to the base plate. The main shaft is installed in the center of the base plate and is coaxially arranged with the outer ring of the blade profile. The main shaft can rotate relative to the base plate. The main shaft is adapted to the shaft hole of the impeller of the water jet propulsion device so that the impeller of the water jet propulsion device can be connected to the main shaft. A blade observation window is machined on the outer ring of the blade profile. The edge of the blade observation window is the projection position of the rim of the impeller of the water jet propulsion device from the axis of the main shaft to the outer ring of the blade profile.

2. The inspection device for inspecting the machining accuracy of impeller blades in a waterjet propulsion device according to claim 1, characterized in that: The blade observation window is provided in multiple ways and is consistent with the projection shape of the impeller 3D model. The distribution of the multiple blade observation windows on the outer circumference of the blade shape is also consistent with the distribution of the blades around the impeller center on the impeller 3D model, so as to verify the blade uniformity accuracy.

3. The inspection device for inspecting the machining accuracy of impeller blades in a waterjet propulsion device according to claim 1, characterized in that: The outer ring of the blade is connected to the base plate via a tray and a fixed flange.

4. The inspection device for inspecting the machining accuracy of impeller blades in a waterjet propulsion device according to claim 3, characterized in that: Corresponding to the installation position of the main shaft, a replacement bearing mounting groove is provided on the base plate, and the fixing flange is located outside the bearing mounting groove.

5. The inspection device for inspecting the machining accuracy of impeller blades in a waterjet propulsion device according to claim 4, characterized in that: A bearing housing and a bearing are installed in the bearing mounting slot, and the top surface of the bearing housing is level with the top surface of the tray.

6. The inspection device for inspecting the machining accuracy of impeller blades in a waterjet propulsion device according to claim 5, characterized in that, The bearing housing is also provided with a dust cover on the upper part, which covers the entire mounting hole of the fixed flange.

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