V-shaped crank arm detection device

Abstract

The utility model belongs to the field of size measurement, and particularly relates to a V-shaped crank arm detection device. In order to simplify the measurement process of a V-shaped crank arm and improve the measurement accuracy, the utility model provides a V-shaped crank arm detection device. The V-shaped crank arm detection device comprises a base, the base is provided with a large-diameter cylinder, a small-diameter cylinder and a regular hexagonal prism which extend in the vertical direction, the section of the large-diameter cylinder is a large circle, the section of the small-diameter cylinder is a small circle, the section of the regular hexagonal prism is a regular hexagon, and the connecting line of the center of the large circle and the center of the regular hexagon passes through the vertex of the regular hexagon. And the connecting line of the center of the large circle and the center of the regular hexagon is perpendicular to the connecting line of the center of the small circle and the center of the regular hexagon, so that the large-diameter cylinder, the small-diameter cylinder and the regular hexagonal prism respectively penetrate through the large circle through hole, the small circle through hole and the regular hexagonal through hole of the same V-shaped crank arm. When the V-shaped crank arm is detected in an installation mode, the measurement process can be simplified, the burden of workers is reduced, and personal errors are reduced.

Description

Technical Field

[0001] The utility model belongs to the field of size measurement, in particular to a V-shaped crank arm detection device. Background Art

[0002] like Figure 1 As shown, a V-shaped arm 1 is used inside a high-voltage switch. A large circular hole 2 and a small circular hole 3 are provided at each end of the V-shaped arm 1. The inner diameter of the large circular hole 2 is larger than that of the small circular hole 3. The V-shaped arm 1 also has a regular hexagonal hole 4. The line connecting the center of the large circular hole 2 and the center of the regular hexagonal hole 4 is perpendicular to the line connecting the center of the small circular hole 3 and the center of the regular hexagonal hole 4. Furthermore, the line connecting the center of the large circular hole 2 and the center of the regular hexagonal hole 4 passes through the vertex of the regular hexagonal hole 4, and the distance between the large circular hole 2 and the regular hexagonal hole 4 is smaller than the distance between the small circular hole 3 and the regular hexagonal hole 4.

[0003] It should be noted that there are two types of V-shaped turning arms 2 , and the difference between the two types is only that the side lengths of the regular hexagonal through-holes 4 are different.

[0004] In the prior art, when inspecting the V-shaped crank arm 1, it is necessary to check the size of each perforation, the verticality of each perforation, and the relative position of each perforation. When measuring the V-shaped crank arm 1 using the platform scribing method, multiple measuring tools such as calipers, height gauges, and inside micrometers are required, and the coordinates of multiple points on each perforation must be measured. This measurement process is very cumbersome and time-consuming. Since the measured data is large and all measurements are made manually, human errors are prone to occur, resulting in inaccurate measurement results. Utility Model Content

[0005] The purpose of the utility model is to provide a V-shaped crank arm detection device to solve the technical problems that the detection process of the V-shaped crank arm is complicated, time-consuming, labor-intensive and has low accuracy.

[0006] To achieve the above-mentioned purpose, the technical solution of the V-shaped crank arm detection device provided by the present invention is:

[0007] A V-shaped crank arm detection device includes a base, a detection plane in a horizontal state is provided on the base, and a large-diameter cylinder, a small-diameter cylinder and a regular hexagonal prism extending in the up-down direction are provided on the detection plane, the outer diameter of the large-diameter cylinder is used to match the inner diameter of the large-circle perforation of the V-shaped crank arm, the outer diameter of the small-diameter cylinder is used to match the inner diameter of the small-circle perforation of the V-shaped crank arm, the side length of the bottom surface of the regular hexagonal prism is used to match the side length of the regular hexagonal perforation of the V-shaped crank arm, and the distance between the large-diameter cylinder and the regular hexagonal prism is less than the distance between the small-diameter cylinder and the regular hexagonal prism. The distance between the large-diameter cylinder and the regular hexagonal prism is such that, in the same horizontal plane, the cross-section of the large-diameter cylinder is a large circle, the cross-section of the small-diameter cylinder is a small circle, and the cross-section of the regular hexagon is a regular hexagon. The line connecting the center of the large circle and the center of the regular hexagon passes through the vertex of the regular hexagon, and the line connecting the center of the large circle and the center of the regular hexagon is perpendicular to the line connecting the center of the small circle and the center of the regular hexagon, so as to allow the large-diameter cylinder, the small-diameter cylinder and the regular hexagonal prism to pass through the large circle perforation, small circle perforation and regular hexagonal perforation of the same V-shaped arm respectively.

[0008] Furthermore, the regular hexagonal prism is detachably mounted on the detection plane.

[0009] Furthermore, a mounting protrusion is provided at the bottom of the regular hexagonal prism, and a mounting hole matching the mounting protrusion is provided on the detection plane.

[0010] Furthermore, a mounting groove is provided at the bottom of the regular hexagonal prism, and a mounting protrusion matching the mounting groove is provided on the detection plane.

[0011] Furthermore, the height of the large-diameter cylinder is used to be the same as the height of the large-circle through-hole of the V-shaped arm.

[0012] Furthermore, the height of the small-diameter cylinder is used to be the same as the height of the small-circular through-hole of the V-shaped arm.

[0013] Furthermore, the height of the regular hexagonal prism is used to be the same as the height of the regular hexagonal through-hole of the V-shaped arm.

[0014] Furthermore, a weight-reducing hole is provided on the large-diameter cylinder, and the weight-reducing hole is a cylindrical hole, and the cylindrical hole coincides with the axis of the large-diameter cylinder.

[0015] Furthermore, a weight-reducing hole is provided on the small-diameter cylinder, and the weight-reducing hole is a cylindrical hole, and the cylindrical hole coincides with the axis of the small-diameter cylinder.

[0016] Furthermore, the regular hexagonal prism is provided with a weight-reducing hole.

[0017] The beneficial effects of the V-shaped crank arm detection device provided by the present invention are as follows: the present invention is a pioneering invention. When in use, first, the V-shaped crank arm to be tested needs to be installed on the V-shaped crank arm detection device. If the V-shaped crank arm to be tested can be installed on the V-shaped crank arm detection device, it proves that: (1) the relative positions of the large circle perforation, the small circle perforation and the regular hexagonal perforation are qualified; (2) the inner diameters of the large circle perforation and the small circle perforation are not too small, and the side length of the regular hexagonal perforation is not too short. Afterwards, the staff needs to observe whether there is a clear gap between the large circle perforation and the large diameter cylinder, whether there is a clear gap between the small circle perforation and the small diameter cylinder, and whether there is a clear gap between the regular hexagonal perforation and the regular hexagonal prism. If there is no clear gap, it proves that: (1) the inner diameters of the large circle perforation and the small circle perforation are qualified, and the side length of the regular hexagonal perforation is qualified; (2) the verticality of the large circle perforation, the small circle perforation and the regular hexagonal perforation is qualified. Finally, the distance between the top of the large circular perforation and the top of the large-diameter cylinder, the distance between the top of the small circular perforation and the top of the small-diameter cylinder, and the distance between the top of the regular hexagonal perforation and the top of the regular hexagonal prism are measured to determine if the heights of the large circular perforation, small circular perforation, and regular hexagonal perforation meet the requirements. If all of the above dimensions and positional relationships meet the requirements, the V-shaped crank arm under test is considered qualified. Using the V-shaped crank arm detection device to test V-shaped crank arms can effectively reduce the burden on personnel and reduce human error. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of an existing V-shaped crank arm;

[0019] Figure 2 This is a front view schematic diagram of the V-shaped turning arm detection device of the utility model when the regular hexagonal prism is removed;

[0020] Figure 3 This is a top view schematic diagram of the V-shaped turning arm detection device of the utility model when the regular hexagonal prism is removed;

[0021] Figure 4 This is a schematic structural diagram of the first regular hexagonal prism and the mounting protrusion in the V-shaped turning arm detection device of the utility model;

[0022] Figure 5 This is a top view schematic diagram of the first regular hexagonal prism and the mounting protrusion in the V-shaped crank arm detection device of the utility model;

[0023] Figure 6 This is a top view of the first regular hexagonal prism in the V-shaped crank arm detection device of the present invention after being installed on the base;

[0024] Figure 7 This is a top view schematic diagram of the second regular hexagonal prism and the mounting protrusion in the V-shaped crank arm detection device of the present utility model;

[0025] Figure 8This is a top view of the second regular hexagonal prism in the V-shaped crank arm detection device of the present invention after being installed on the base.

[0026] Description of reference numerals:

[0027] 1. V-shaped crank arm; 2. Large circle perforation; 3. Small circle perforation; 4. Regular hexagonal perforation; 5. Base; 6. Large diameter cylinder; 7. Small diameter cylinder; 8. Regular hexagonal prism; 81. Mounting protrusion; 9. Mounting hole. DETAILED DESCRIPTION

[0028] In order to solve the problems in the background technology, the core inventive concept of the present utility model is: to detect whether the specifications of the V-shaped crank arm meet the standards by installing the V-shaped crank arm on the V-shaped crank arm detection device, and to ensure that the V-shaped crank arm can be normally installed in the high-voltage switch.

[0029] The present invention is further described in detail below with reference to the embodiments.

[0030] Specific embodiments of the V-shaped crank arm detection device provided by the utility model:

[0031] In reference Figure 1 On the basis of Figures 2 to 6 As shown, as the first basic specific implementation method, the V-shaped crank arm detection device includes a base 5, a detection plane in a horizontal state is provided on the base 5, and a large diameter cylinder 6, a small diameter cylinder 7 and a regular hexagonal prism 8 extending in the up and down directions are provided on the detection plane. The outer diameter of the large diameter cylinder 6 is used to match the inner diameter of the large circular perforation 2 of the V-shaped crank arm 1, the outer diameter of the small diameter cylinder 7 is used to match the inner diameter of the small circular perforation 3 of the V-shaped crank arm 1, and the side length of the bottom surface of the regular hexagonal prism 8 is used to match the side length of the regular hexagonal perforation 4 of the V-shaped crank arm 1. The distance between the prisms 8 is smaller than the distance between the small-diameter cylinder 7 and the regular hexagonal prism 8. In the same horizontal plane, the cross-section of the large-diameter cylinder 6 is a large circle, the cross-section of the small-diameter cylinder 7 is a small circle, and the cross-section of the regular hexagonal prism 8 is a regular hexagon. The line connecting the center of the large circle and the center of the regular hexagon passes through the vertex of the regular hexagon, and the line connecting the center of the large circle and the center of the regular hexagon is perpendicular to the line connecting the center of the small circle and the center of the regular hexagon, so as to allow the large-diameter cylinder 6, the small-diameter cylinder 7 and the regular hexagonal prism 8 to pass through the large circle perforation 2, the small circle perforation 3 and the regular hexagonal perforation 4 of the same V-shaped crank arm 1 respectively.

[0032] In the specific embodiment of type 1-1, the regular hexagonal prism 8 is fixed on the detection plane, or the regular hexagonal prism 8 is integrally formed with the base 5. In this case, it is necessary to manufacture two V-shaped turning arm detection devices containing regular hexagonal prisms 8 of two different specifications, and each V-shaped turning arm detection device is used to detect a type of V-shaped turning arm 1.

[0033] In the specific embodiment of class 1-2, if Figures 2 to 8As shown, the regular hexagonal prism 8 can be detachably mounted on the detection plane. By replacing different regular hexagonal prisms 8, different crank arms can be detected. There is no need to additionally manufacture the base 5, large-diameter cylinder 6, and small-diameter cylinder 7, which can effectively reduce costs. In addition, when used on site, there is no need to switch back and forth between different V-shaped crank arm detection devices, which is convenient to use.

[0034] Specifically, in Figures 5 and 6 In the embodiment, the side length of the bottom surface of the regular hexagonal prism 8 is larger, so as to detect the V-shaped turning arm 1 with a larger side length of the regular hexagonal perforation 4; Figures 7 and 8 In the embodiment, the side length of the bottom surface of the regular hexagonal prism 8 is smaller, so as to be used for detecting the V-shaped turning arm 1 with the smaller side length of the regular hexagonal through hole 4.

[0035] In the specific implementation of Class 1-2-1, if Figures 2 to 8 As shown, a mounting protrusion 81 is provided at the bottom of the regular hexagonal prism 8, and a mounting hole 9 matching the mounting protrusion 81 is provided on the detection plane, with a simple structure.

[0036] In the specific implementation of Class 1-2-2, refer to Figures 2 to 8 As shown, a mounting groove is provided at the bottom of the regular hexagonal prism 8, and a mounting protrusion 81 matching the mounting groove is provided on the detection plane, with a simple structure.

[0037] When in use, first, the V-shaped crank arm 1 to be tested needs to be installed on the V-shaped crank arm detection device. If the V-shaped crank arm 1 to be tested can be installed on the V-shaped crank arm detection device, it proves that: (1) the relative positions of the large circle perforation 2, the small circle perforation 3 and the regular hexagonal perforation 4 are qualified; (2) the inner diameters of the large circle perforation 2 and the small circle perforation 3 are not too small, and the side length of the regular hexagonal perforation 4 is not too short. Afterwards, the staff needs to observe whether there is a clear gap between the large circle perforation 2 and the large diameter cylinder 6, whether there is a clear gap between the small circle perforation 3 and the small diameter cylinder 7, and whether there is a clear gap between the regular hexagonal perforation 4 and the regular hexagonal prism 8. If there is no clear gap, it proves that: (1) the inner diameters of the large circle perforation 2 and the small circle perforation 3 are qualified, and the side length of the regular hexagonal perforation 4 is qualified; (2) the verticality of the large circle perforation 2, the small circle perforation 3 and the regular hexagonal perforation 4 is qualified. Finally, the distance between the top of the large circular perforation 2 and the top of the large-diameter cylinder 6, the distance between the top of the small circular perforation 3 and the top of the small-diameter cylinder 7, and the distance between the top of the regular hexagonal perforation 4 and the top of the regular hexagonal prism 8 are measured to determine whether the heights of the large circular perforation 2, the small circular perforation 3, and the regular hexagonal perforation 4 are qualified. If the above dimensions and positional relationships are all qualified, the V-shaped crank arm 1 to be tested is qualified. When using the V-shaped crank arm detection device to test the V-shaped crank arm 1, the burden on the operator can be effectively reduced and human error can be reduced.

[0038] In order to facilitate the measurement of the height of the large circular perforation 2, the small circular perforation 3 and the regular hexagonal perforation 4, the present invention makes the following improvements to the large diameter cylinder 6, the small diameter cylinder 7 and the regular hexagonal prism 8:

[0039] In the second embodiment, the height of the large-diameter cylinder 6 is designed to be the same as the height of the large circular perforation 2 in the V-shaped arm 1. Workers can observe whether the top of the large-diameter cylinder 6 is flush with the top of the large circular perforation 2, thereby determining whether the height of the large circular perforation 2 is acceptable. Compared to the technical solution in which the height of the large-diameter cylinder 6 is slightly higher than or lower than the large circular perforation 2, workers do not need to use a ruler to measure the height difference between the top of the large-diameter cylinder 6 and the top of the large circular perforation 2, which saves manpower and improves the work experience.

[0040] Similarly, in the third type of specific implementation, the height of the small-diameter cylinder 7 is used to be the same as the height of the small round perforation 3 of the V-shaped crank arm 1. The staff can observe whether the top of the small-diameter cylinder 7 is flush with the top of the small round perforation 3, thereby judging whether the height of the small round perforation 3 is qualified, which can save manpower and optimize the work experience of the staff.

[0041] Similarly, in the fourth type of specific implementation, the height of the regular hexagonal prism 8 is used to be the same as the height of the regular hexagonal perforation 4 of the V-shaped arm 1. The staff can observe whether the top of the regular hexagonal prism 8 is flush with the top of the regular hexagonal perforation 4, thereby judging whether the height of the regular hexagonal perforation 4 is qualified, which can save manpower and optimize the work experience of the staff.

[0042] In the present utility model, the features of the second, third and fourth category specific embodiments can also be organically combined. For example, in the fifth category specific embodiment, the height of the large diameter cylinder 6 is used to be the same as the height of the large circular perforation 2 of the V-shaped turning arm 1, the height of the small diameter cylinder 7 is used to be the same as the height of the small circular perforation 3 of the V-shaped turning arm 1, and the height of the regular hexagonal prism 8 is used to be the same as the height of the regular hexagonal perforation 4 of the V-shaped turning arm 1, so as to better optimize the work experience of the staff.

[0043] In order to reduce the mass of the V-shaped turning arm detection device and facilitate the transportation of the V-shaped turning arm detection device, the present invention makes the following improvements to the large-diameter cylinder 6, the small-diameter cylinder 7 and the regular hexagonal prism 8:

[0044] In the sixth embodiment, a weight-reducing hole is provided on the large-diameter cylinder 6 . The weight-reducing hole is a cylindrical hole, and the cylindrical hole coincides with the axis of the large-diameter cylinder 6 , thereby reducing the mass of the V-shaped crank arm detection device and facilitating the transportation of the V-shaped crank arm detection device.

[0045] Preferably, in the specific embodiment of category 6-1, the height of the weight-reducing hole is the same as the height of the large-diameter cylinder 6. At this time, the large-diameter cylinder 6 is formed after removing the weight-reducing hole, and the internal space of the large-diameter cylinder constitutes the weight-reducing hole.

[0046] In the specific embodiment of type 6-2, the height of the weight-reducing hole is half the height of the large-diameter cylinder 6 .

[0047] In the seventh specific embodiment, a weight-reducing hole is provided on the small-diameter cylinder 7 , and the weight-reducing hole is a cylindrical hole, and the cylindrical hole coincides with the axis of the small-diameter cylinder 7 , thereby reducing the mass of the V-shaped crank arm detection device and facilitating the transportation of the V-shaped crank arm detection device.

[0048] Preferably, in the specific embodiment of category 7-1, the height of the weight-reducing hole is the same as the height of the small-diameter cylinder 7. At this time, the small-diameter cylinder 7 is formed after removing the weight-reducing hole, and the internal space of the small-diameter cylinder constitutes the weight-reducing hole.

[0049] In the specific embodiment of type 7-2, the height of the lightening hole is half the height of the small-diameter cylinder 7 .

[0050] In the eighth embodiment, a weight-reducing hole is provided on the regular hexagonal prism 8 , thereby reducing the mass of the V-shaped turning arm detection device and facilitating the transportation of the V-shaped turning arm detection device.

[0051] In the present utility model, the features of the specific embodiments of categories 6, 7 and 8 can also be organically combined. For example, in the specific embodiment of category 9, weight-reducing holes are provided on the large-diameter cylinder 6, the small-diameter cylinder 7 and the regular hexagonal prism 8.

[0052] It should be noted that the classification of embodiments in this utility model based only on specific features does not mean that other categories do not contain the same specific features. For example, the structure of the embodiment in category 1 may be the same as that of the embodiment in category 2 or category 3.

[0053] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without creative effort, or replace some of the technical features therein with equivalents, or organically combine different types of specific implementations to form the attached invention. Figures 2 to 6 The specific embodiments are given in the specification. Of course, those skilled in the art can also combine other specific embodiments not given in the drawings. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this utility model shall be included in the scope of protection of this utility model.

Claims

1. A V-shaped crank arm detection device, characterized in that: The base comprises a detection plane in a horizontal state, and the detection plane is provided with a large diameter cylinder, a small diameter cylinder and a regular hexagonal prism extending in the up and down directions. The outer diameter of the large diameter cylinder is used to match the inner diameter of the large circular perforation of the V-shaped turning arm, the outer diameter of the small diameter cylinder is used to match the inner diameter of the small circular perforation of the V-shaped turning arm, and the side length of the bottom surface of the regular hexagonal prism is used to match the side length of the regular hexagonal perforation of the V-shaped turning arm. The distance between the large diameter cylinder and the regular hexagonal prism is smaller than the distance between the small diameter cylinder and the regular The distance between the hexagonal prisms is that, within the same horizontal plane, the cross-section of the large-diameter cylinder is a large circle, the cross-section of the small-diameter cylinder is a small circle, and the cross-section of the regular hexagon is a regular hexagon. The line connecting the center of the large circle and the center of the regular hexagon passes through the vertex of the regular hexagon, and the line connecting the center of the large circle and the center of the regular hexagon is perpendicular to the line connecting the center of the small circle and the center of the regular hexagon, so that the large-diameter cylinder, the small-diameter cylinder and the regular hexagon pass through the large circle perforation, small circle perforation and regular hexagon perforation of the same V-shaped arm respectively.

2. The V-shaped crank arm detection device according to claim 1, characterized in that: The regular hexagonal prism is detachably mounted on the detection plane.

3. The V-shaped crank arm detection device according to claim 2, characterized in that: A mounting protrusion is provided at the bottom of the regular hexagonal prism, and a mounting hole matching the mounting protrusion is provided on the detection plane.

4. The V-shaped crank arm detection device according to claim 2, characterized in that: A mounting groove is provided at the bottom of the regular hexagonal prism, and a mounting protrusion matching the mounting groove is provided on the detection plane.

5. The V-shaped crank arm detection device according to any one of claims 1 to 4, characterized in that: The height of the large diameter cylinder is used to be the same as the height of the large circular through-hole of the V-shaped crank arm.

6. The V-shaped crank arm detection device according to any one of claims 1 to 4, characterized in that: The height of the small diameter cylinder is used to be the same as the height of the small circular through-hole of the V-shaped arm.

7. The V-shaped crank arm detection device according to any one of claims 1 to 4, characterized in that: The height of the regular hexagonal prism is the same as the height of the regular hexagonal perforation of the V-shaped arm.

8. The V-shaped crank arm detection device according to any one of claims 1 to 4, characterized in that: A weight-reducing hole is provided on the large-diameter cylinder. The weight-reducing hole is a cylindrical hole, and the cylindrical hole coincides with the axis of the large-diameter cylinder.

9. The V-shaped crank arm detection device according to any one of claims 1 to 4, characterized in that: A weight-reducing hole is provided on the small-diameter cylinder. The weight-reducing hole is a cylindrical hole, and the cylindrical hole coincides with the axis of the small-diameter cylinder.

10. The V-shaped crank arm detection device according to any one of claims 1 to 4, characterized in that: The regular hexagonal prism is provided with a weight-reducing hole.

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