Inner diameter measuring tool for cylinder structure

Abstract

The utility model provides an inner diameter measuring tool for a cylinder structure. The structure of the inner diameter measuring tool for the cylinder structure comprises a measuring tool host; the first laser range finder is mounted on the measuring tool host, and the first laser range finder is conductively connected with the measuring tool host; and the second laser range finder is mounted on the measuring tool host, the second laser range finder can pivot relative to the first laser range finder, and the second laser range finder is electrically connected with the measuring tool host. The inner diameter measuring tool for the cylinder structure can solve the problem that when a measuring tape is used for measuring the inner diameter of the cylinder structure, the measuring requirement and the cleanliness requirement are difficult to meet.

Description

Technical Field

[0001] This application relates to the technical field of measuring tools, and particularly to an inner diameter measuring tool for a cylindrical structure. Background Art

[0002] In the process of single crystal production, the application of cylindrical structures is extremely extensive. Given the high-temperature working environment of single crystal furnaces and the significant impact of long-term operation on the material aging rate, inspectors will conduct strict dimensional inspections on relevant components at the new part stage, after each furnace is used, and before scrapping.

[0003] Currently, for the inspection of cylindrical structures, the focus is on the precise measurement of the diameter. Usually, technicians will use a tape measure for this work. However, when using a tape measure for measurement, there are the following significant drawbacks: First, when measuring large-diameter devices, the use of a tape measure usually requires two people to cooperate, which undoubtedly increases the complexity and potential errors of the measurement. Second, during the measurement process of the tape measure, its linearity error is relatively large, and it is difficult to accurately capture the diameter of the device, thus affecting the measurement accuracy. Third, when using a tape measure for measurement, it is necessary to ensure that the tape measure is closely attached to the surface of the device, and this operation may cause contamination to the surface of the device, especially for devices with high cleanliness requirements. Utility Model Content

[0004] In view of this, the purpose of this application is to provide an inner diameter measuring tool for a cylindrical structure to solve the problems that it is difficult to meet the measurement requirements and cleanliness requirements when using a tape measure to measure the inner diameter of a cylindrical structure.

[0005] According to the present utility model, there is provided an inner diameter measuring tool for a cylindrical structure, wherein the inner diameter measuring tool for a cylindrical structure includes: a measuring tool main body; a first laser rangefinder installed on the measuring tool main body, the first laser rangefinder being electrically connected to the measuring tool main body; and a second laser rangefinder installed on the measuring tool main body, the second laser rangefinder being pivotable relative to the first laser rangefinder, the second laser rangefinder being electrically connected to the measuring tool main body.

[0006] Preferably, an installation groove is provided in the measuring tool main body, and the first laser rangefinder and the second laser rangefinder are stacked and installed in the installation groove.

[0007] Preferably, the shape of the measuring tool main body is a cuboid, and the first laser rangefinder and the second laser rangefinder are installed at the lower part of the measuring tool main body.

[0008] Preferably, a baffle is provided on the first side of the measuring tool host corresponding to the installation groove, and the second side of the measuring tool host is provided with an opening corresponding to the installation groove. The second side and the first side are opposite sides of the measuring tool host. The first laser rangefinder and the second laser rangefinder can pivot in the direction of the second side of the measuring tool host.

[0009] Preferably, the first laser rangefinder and the second laser rangefinder are provided with a measuring end capable of emitting laser, and the measuring end protrudes from the measuring tool host.

[0010] Preferably, the first laser rangefinder and the second laser rangefinder are provided with an installation end for connecting with the measuring tool host, and the installation end is arranged in the installation groove.

[0011] Preferably, a fixed shaft extending along the length direction of the measuring tool host is arranged in the installation groove, and a through hole is arranged on the installation end. The fixed shaft passes through the through hole, so that the first laser rangefinder and the second laser rangefinder can pivot around the fixed shaft.

[0012] Preferably, the shape of the measuring end is a cuboid, and the installation end is provided with an arc surface.

[0013] Preferably, a display screen is arranged on the measuring tool host.

[0014] Preferably, a switch and a centralized control button are arranged on the measuring tool host.

[0015] In the inner diameter measuring tool for a cylindrical structure according to an embodiment of the present invention, the first laser rangefinder and the second laser rangefinder are both installed on the measuring tool host and are electrically connected to the measuring tool host. The second laser rangefinder can pivot relative to the first laser rangefinder. When the included angle between the second laser rangefinder and the first laser rangefinder rotates to 90°, the operator can place the measuring tool host closely against the inner wall of the cylindrical structure to measure the inner diameter of the cylindrical structure. Since the longest side of the inscribed right triangle of a circle must pass through the center of the circle, the measuring tool host can calculate the inner diameter of the cylindrical structure according to the distances measured by the first laser rangefinder and the second laser rangefinder. In this way, the problems that it is difficult to meet the measurement requirements and cleanliness requirements when using a tape measure to measure the inner diameter of a cylindrical structure can be effectively solved.

[0016] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of an inner diameter measuring tool for a cylindrical structure according to the present utility model.

[0019] Figure 2 It is a schematic diagram of another angle of the inner diameter measuring tool for a cylindrical structure according to the present utility model.

[0020] Figure 3 It is a schematic diagram of the first laser rangefinder of the inner diameter measuring tool for a cylindrical structure according to the present utility model.

[0021] Figure 4 It is a schematic diagram of the use of the inner diameter measuring tool for a cylindrical structure according to the present utility model.

[0022] Reference numerals: 1 - first laser rangefinder; 10 - first distance; 11 - measuring end; 12 - mounting end; 120 - through hole; 2 - second laser rangefinder; 20 - second distance; 3 - measuring tool main body; 30 - mounting groove; 31 - baffle; 300 - display screen; 301 - switch; 302 - centralized control button; 4 - cylindrical structure; 40 - laser rangefinder length. Specific embodiments

[0023] The following specific embodiments are provided to help readers obtain a comprehensive understanding of the methods, devices, and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be obvious. For example, the order of operations described herein is merely an example and is not limited to the order set forth herein. Rather, changes that will be obvious after understanding the disclosure of the present application can be made, except for operations that must occur in a specific order. In addition, for the sake of clarity and conciseness, descriptions of features known in the art may be omitted.

[0024] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, devices, and / or systems described herein that will be obvious after understanding the disclosure of the present application.

[0025] Throughout the specification, when an element, such as a layer, region, or substrate, is described as being "on" another element, "connected to" another element, "coupled to" another element, "above" another element, or "covering" another element, it can be directly "on" the other element, "connected to" the other element, "coupled to" the other element, "above" the other element, or "covering" the other element, or there can be one or more other elements intervening therebetween. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly coupled to" another element, "directly above" another element, or "directly covering" another element, there can be no other elements intervening therebetween.

[0026] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of them.

[0027] Although terms such as "first", "second", and "third" may be used herein to describe various components, elements, regions, layers, or parts, these components, elements, regions, layers, or parts are not limited by these terms. Rather, these terms are only used to distinguish one component, element, region, layer, or part from another. Thus, a first component, element, region, layer, or part described in an example herein could also be termed a second component, element, region, layer, or part without departing from the teachings of the example.

[0028] For ease of description, spatial relationship terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another as shown in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "above" or "upper" relative to another element will then be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientations of "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relationship terms used herein will be interpreted accordingly.

[0029] The terms used herein are for the purpose of describing various examples only and are not intended to limit the examples. Unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. The terms "comprising", "including" and "having" enumerate the stated features, quantities, operations, components, elements and / or combinations thereof that exist, but do not preclude the existence or addition of one or more other features, quantities, operations, components, elements and / or combinations thereof.

[0030] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Accordingly, the examples described herein are not limited to the specific shapes shown in the drawings, but include changes in shape that occur during manufacturing.

[0031] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have a variety of configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application.

[0032] The present utility model provides an inner diameter measuring tool for a cylindrical structure, as Figures 1 to 4 shown, the inner diameter measuring tool for the cylindrical structure includes a measuring tool main body 3, a first laser rangefinder 1 and a second laser rangefinder 2.

[0033] In the following description, reference will be made to Figures 1 to 4 specifically describe the specific structures of the above components of the inner diameter measuring tool for the cylindrical structure and the connection relationships of the above components.

[0034] As Figures 1 to 4 shown, in the embodiment, the first laser rangefinder 1 can be installed on the measuring tool main body 3. The first laser rangefinder 1 can be electrically connected to the measuring tool main body 3 to transmit data (i.e., the ranging result) to the measuring tool main body 3. The second laser rangefinder 2 can be installed on the measuring tool main body 3. The second laser rangefinder 2 can be electrically connected to the measuring tool main body 3 to transmit data (i.e., the ranging result) to the measuring tool main body 3. Preferably, the second laser rangefinder 2 can pivot relative to the first laser rangefinder 1 to form an angle between the ranging directions of the second laser rangefinder 2 and the first laser rangefinder 1. When the angle between the second laser rangefinder 2 and the first laser rangefinder 1 is 90°, the operator can press the measuring tool main body 3 against the inner wall of the cylindrical structure 4 to measure the inner diameter of the cylindrical structure 4. Since the longest side of an inscribed right triangle in a circle must pass through the center of the circle, the measuring tool main body 3 can calculate the inner diameter of the cylindrical structure 4 based on the distances measured by the first laser rangefinder 1 and the second laser rangefinder 2, so as to simplify the operation of measuring the inner diameter of the cylindrical structure 4 and avoid large-area contact with the inner wall of the cylindrical structure 4.

[0035] Preferably, as Figure 1 and Figure 2 shown, in the embodiment, the shape of the measuring tool main body 3 can be approximately a cuboid to facilitate measuring the inner diameter of the cylindrical structure 4. The first laser rangefinder 1 and the second laser rangefinder 2 can be arranged closely. Preferably, the first laser rangefinder 1 and the second laser rangefinder 2 can be installed at the lower part in the length direction of the measuring tool main body 3.

[0036] Further, preferably, as Figure 1 and Figure 2 shown, in the embodiment, an installation groove 30 can be provided in the measuring tool main body 3, and the installation groove 30 can be opened at the lower part in the length direction of the measuring tool main body 3. The first laser rangefinder 1 and the second laser rangefinder 2 can be stacked and installed in the installation groove 30. Specifically, the installation groove 30 can be a rectangular groove, and the length direction of the installation groove 30 can be the length direction of the measuring tool main body 3, so that the first laser rangefinder 1 and the second laser rangefinder 2 are stacked in the length direction of the measuring tool main body 3. The contact surface between the first laser rangefinder 1 and the second laser rangefinder 2 can be a horizontal plane to facilitate relative rotation between the first laser rangefinder 1 and the second laser rangefinder 2.

[0037] Preferably, as Figure 1 and Figure 2 shown, in the embodiment, a baffle 31 can be provided at the first side (which can be the right side as shown in Figure 2 ) of the measuring tool main body 3 corresponding to the installation groove 30. The baffle 31 can be integrally formed with the measuring tool main body 3, so that the first laser rangefinder 1 and the second laser rangefinder 2 in the installation groove 30 cannot pivot towards the first side direction of the measuring tool main body 3. The second side (which can be the left side as shown in Figure 1 ) of the measuring tool main body 3 corresponding to the installation groove 30 can be set as an opening, that is, the second side of the measuring tool main body 3 forms an opening side, so that the first laser rangefinder 1 and the second laser rangefinder 2 in the installation groove 30 can pivot towards the second side direction of the measuring tool main body 3. Preferably, the first side of the measuring tool main body 3 and the second side of the measuring tool main body 3 are opposite sides to each other. When the first laser rangefinder 1 remains stationary and the second laser rangefinder 2 pivots to the limit, the included angle between the first laser rangefinder 1 and the second laser rangefinder 2 is 90°; or when the second laser rangefinder 2 remains stationary and the first laser rangefinder 1 pivots to the limit, the included angle between the second laser rangefinder 2 and the first laser rangefinder 1 is also 90°.

[0038] Preferably, as Figures 1 to 3As shown, in the embodiment, the first laser rangefinder 1 and the second laser rangefinder 2 are provided with a measuring end 11 capable of emitting laser, and a mounting end 12 for connecting with the measuring tool host 3. Specifically, the shape of the measuring end 11 can be a cuboid, so that the end face of the measuring end 11 can be kept neat. The measuring end 11 can protrude from the measuring tool host 3 in the horizontal direction, so as to facilitate the operator to pivot the first laser rangefinder 1 and the second laser rangefinder 2. The mounting end 12 is arranged in the mounting groove 30. Preferably, the mounting end 12 can be formed with an arc surface to facilitate the rotation of the mounting end 12 in the mounting groove 30.

[0039] Furthermore, preferably, in the embodiment, a fixed shaft (not shown) extending along the length direction of the measuring tool host 3 can be arranged in the mounting groove 30. Circular through holes 120 can be opened on the mounting ends 12 of the first laser rangefinder 1 and the second laser rangefinder 2. The fixed shaft can pass through the through holes 120, so that the first laser rangefinder 1 and the second laser rangefinder 2 can pivot around the fixed shaft.

[0040] In addition, preferably, as Figure 1 and Figure 2 shown, in the embodiment, a display screen 300, a switch 301 and a centralized control button 302 can also be arranged on the measuring tool host 3. Among them, the centralized control button 302 can be arranged at the upper part of the mounting groove 30. The number of the centralized control buttons 302 can be multiple, for realizing functions such as storing measurement data. The display screen 300 can be arranged at the upper part of the centralized control button 302, and the display screen 300 is used for displaying the measured value. The switch 301 can be arranged at the upper part of the display screen 300, and the switch 301 is used for turning on or off the inner diameter measuring tool for the cylindrical structure.

[0041] During the use process, the operator can first pivot the first laser rangefinder 1 or the second laser rangefinder 2 to make the included angle between the first laser rangefinder 1 and the second laser rangefinder 2 be 90°. Then make the side edge of the measuring tool host 3 opposite to the 90° included angle closely adhere to the inner wall of the cylindrical structure 4. At this time, the measuring tool host 3 can obtain the inner diameter of the cylindrical structure 4 according to the first distance 10 measured by the first laser rangefinder 1 and the second distance 20 measured by the second laser rangefinder 2. That is, as Figure 4 shown, the inner diameter of the cylindrical structure 4 = √((the first distance 10 + the length of the laser rangefinder 40) 2 + (the second distance 20 + the length of the laser rangefinder 40) 2) where the length 40 of the laser rangefinder is the distance between the end face of the first laser rangefinder 1 or the second laser rangefinder 2 and the contact point between the measuring tool main body 3 and the cylindrical structure 4. In this way, the inner diameter of the cylindrical structure 4 can be obtained, and the contact with the inner wall of the cylindrical structure 4 during the measurement process can be reduced to meet the measurement requirements and cleanliness requirements.

[0042] Finally, it should be noted that the above embodiments are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit it. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present application can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A tool for measuring the inner diameter of a cylindrical structure, characterized in that: The inner diameter measuring tool for the cylindrical structure comprises: Measuring tool host; A first laser rangefinder is installed on the measuring tool host, and the first laser rangefinder is conductively connected to the measuring tool host; and A second laser rangefinder is installed on the measuring tool mainframe, the second laser rangefinder can pivot relative to the first laser rangefinder, and the second laser rangefinder is conductively connected to the measuring tool mainframe.

2. The inner diameter measuring tool for a cylindrical structure according to claim 1, characterized in that: The measuring tool main body is provided with an installation groove, and the first laser rangefinder and the second laser rangefinder are stacked and installed in the installation groove.

3. The inner diameter measuring tool for a cylindrical structure according to claim 2, characterized in that: The measuring tool main body is in the shape of a cuboid, and the first laser rangefinder and the second laser rangefinder are installed at the lower part of the measuring tool main body.

4. The inner diameter measuring tool for a cylindrical structure according to claim 3, characterized in that: A baffle is provided on the first side of the measuring tool main body at a position corresponding to the mounting groove, and an opening is provided on the second side of the measuring tool main body at a position corresponding to the mounting groove. The second side and the first side are opposite sides of the measuring tool main body, and the first laser rangefinder and the second laser rangefinder can pivot toward the second side of the measuring tool main body.

5. The inner diameter measuring tool for a cylindrical structure according to claim 2, characterized in that: The first laser rangefinder and the second laser rangefinder are provided with measuring ends capable of emitting laser light, and the measuring ends protrude from the measuring tool main body.

6. The inner diameter measuring tool for a cylindrical structure according to claim 5, characterized in that: The first laser rangefinder and the second laser rangefinder are provided with mounting ends for connecting to the measuring tool host, and the mounting ends are arranged in the mounting groove.

7. The inner diameter measuring tool for a cylindrical structure according to claim 6, characterized in that: A fixed shaft extending along the length direction of the measuring tool main body is arranged in the installation groove, and a through hole is arranged on the installation end. The fixed shaft passes through the through hole, so that the first laser rangefinder and the second laser rangefinder can pivot around the fixed shaft.

8. The inner diameter measuring tool for a cylindrical structure according to claim 6, characterized in that: The measuring end is in the shape of a cuboid, and the mounting end is provided with a curved surface.

9. The inner diameter measuring tool for a cylindrical structure according to claim 1, characterized in that: The measuring tool host is provided with a display screen.

10. The inner diameter measuring tool for a cylindrical structure according to claim 1, characterized in that: The measuring tool host is provided with a switch and a centralized control button.

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