Measuring device of cylinder structure

Abstract

The utility model provides a measuring device of a cylinder structure, and relates to the technical field of measuring devices, the measuring device comprises a middle supporting rod and rollers, two sides of the middle supporting rod are provided with rotating rods, and one end of each rotating rod is rotatably connected with the middle supporting rod; the rollers are rotationally connected to the ends, away from the middle supporting rods, of the rotating rods. One end of the middle supporting rod makes contact with the side wall of the cylinder structure, the side wall of the cylinder structure reversely opens the rotating rods on the two sides of the middle supporting rod, the rolling wheels make contact with the side wall of the cylinder structure, and then the radius, the diameter and the perimeter of the large cylinder structure are deduced according to the Pythagorean theorem; there is no need to configure more human resources, and the labor cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of measuring devices, and particularly to a measuring device for a cylindrical structure. Background Art

[0002] Currently, for the measurement of large cylindrical structures, such as when measuring the dimensions of the mixing drum on a mixer truck, two people need to climb onto the vehicle frame. One person pushes the mixing drum to tilt to one side and operates the mixing drum to rotate; the other person straightens the tape measure until the tape measure wraps around the mixing drum once, and then the circumference of the mixing drum can be measured, and further the outer diameter of the mixing drum can be calculated.

[0003] According to the above measurement method for the circumference dimension of the mixing drum, it requires the cooperation of two people, which is time-consuming and laborious, and has a high labor cost. Utility Model Content

[0004] The utility model aims to solve the technical problem of high labor cost in measuring the circumference dimension of large cylindrical structures.

[0005] To this end, the utility model provides a measuring device for a cylindrical structure.

[0006] The utility model provides a measuring device for a cylindrical structure, including:

[0007] An intermediate support rod, with rotating rods provided on both sides of the intermediate support rod, and one end of the rotating rod is rotatably connected to the intermediate support rod;

[0008] A roller, rotatably connected to the end of the rotating rod away from the intermediate support rod.

[0009] For the measuring device for a cylindrical structure provided by the utility model, by bringing one end of the intermediate support rod into contact with the side wall of the cylindrical structure, the side wall of the cylindrical structure reversely spreads the rotating rods on both sides of the intermediate support rod and makes the rollers contact with the side wall of the cylindrical structure. Then, the radius, diameter, and circumference of the large cylindrical structure are deduced using the Pythagorean theorem, without the need to allocate a large amount of human resources, reducing the labor cost.

[0010] In any of the above technical solutions, further, rotating shafts are provided on the opposite sides of the intermediate support rod, and one end of the rotating rod is rotatably connected to the rotating shaft.

[0011] In this technical solution, by providing rotating shafts on the opposite sides of the intermediate support rod, the rotation of the rotating rods on the opposite sides of the intermediate support rod is realized.

[0012] In any of the above technical solutions, further, the length of the intermediate support rod is less than the length of the rotating rod.

[0013] In this technical solution, only when the length of the middle support rod is less than the length of the rotating rod, can the side wall of the cylindrical structure reverse-expand the rotating rods on both sides of the middle support rod.

[0014] In any of the above technical solutions, further, the lengths of the rotating rods on both sides of the middle support rod are the same.

[0015] In this technical solution, the length of the middle support rod can be directly used for calculating the radius of the cylindrical structure.

[0016] In any of the above technical solutions, further, the outer diameters of the rollers on both sides of the middle support rod are the same.

[0017] In this technical solution, the outer diameter of the roller can be directly used for calculating the radius of the cylindrical structure.

[0018] In any of the above technical solutions, further, a limiting member is provided at one end of the middle support rod for limiting the opening angle of the rotating rod on the middle support rod.

[0019] In this technical solution, the limiting member is used to limit the opening angle of the rotating rod on the middle support rod, preventing the rotation angle of the rotating rod on the middle support rod from exceeding the preset rotation angle threshold and resulting in an uncontrollable situation.

[0020] In any of the above technical solutions, further, a convex platform is provided on the limiting member for abutting against one end of the rotating rod, so that the opening angle of the rotating rod on the middle support rod does not exceed 90°.

[0021] In this technical solution, a flat surface is provided on the convex platform. After one end of the rotating rod fits against the flat surface, the opening angle of the rotating rod on the middle support rod reaches the maximum opening angle, that is, 90°.

[0022] In any of the above technical solutions, further, an attaching layer is detachably connected to the end of the middle support rod away from the limiting member, and the attaching layer is used to attach to the side wall of the cylindrical structure.

[0023] In this technical solution, by providing the attaching layer at the end of the middle support rod away from the limiting member, it is prevented that when the end of the middle support rod away from the limiting member contacts the side wall of the cylindrical structure, the stability is insufficient and the phenomenon of the middle support rod sliding on the side wall of the cylindrical structure occurs.

[0024] In any of the above technical solutions, further, the attaching layer includes a silicone attaching layer.

[0025] In this technical solution, other materials other than silicone can be selected to make the attaching layer according to actual needs, and it is not limited in this embodiment.

[0026] In any of the above technical solutions, further, the measuring device further includes:

[0027] An angular displacement sensor, disposed on the middle support rod and connected to the rotating rod, for sensing the rotation angle of the rotating rod on the middle support rod;

[0028] A display, for displaying the rotation angle value of the rotating rod on the middle support rod;

[0029] A controller, electrically connected to the angular displacement sensor and the display, for transmitting the electrical signal of the rotation angle of the rotating rod sensed by the angular displacement sensor to the display.

[0030] In this technical solution, by installing an angular displacement sensor, a display, and a controller on the cylindrical measuring device, and the angular displacement sensor is disposed on the middle support rod and connected to the rotating rod, the rotation angle value of the rotating rod on the middle support rod can be displayed on the display, which has good intuitiveness and is beneficial for the staff to view the rotation angle value of the rotating rod on the middle support rod.

[0031] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent in part from the following description, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present application will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0033] Figure 1 Shows an application schematic diagram of a measuring device with a cylindrical structure provided by an embodiment of the present application;

[0034] Figure 2 Shows Figure 1 A partial enlarged view of part A of

[0035] Figure 3 Shows a structural schematic diagram of a measuring device with a cylindrical structure provided by an embodiment of the present application after being marked;

[0036] Figure 4 Shows a structural schematic diagram of a measuring device with a cylindrical structure provided by an embodiment of the present application;

[0037] Figure 5 Shows a functional schematic diagram of a measuring device with a cylindrical structure provided by an embodiment of the present application.

[0038] Figures 1 to 5Attached drawing reference numerals: 1, middle support rod; 2, rotating rod; 3, roller; 4, cylindrical structure; 5, rotating shaft; 6, limiting member; 601, boss; 7, adhering layer; 8, angular displacement sensor; 9, display; 10, controller. Detailed implementation manners

[0039] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the attached drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the attached drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0040] The terms "first" and "second" features in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the associated objects before and after.

[0041] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper" and "inner" is based on the orientation or positional relationship shown in the attached drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0042] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0043] The following combines Figures 1 to 5 to describe the measuring device for the cylindrical structure provided by the embodiments of the present application.

[0044] In some embodiments, such as Figure 1 and Figure 2As shown in the figure, an embodiment of the present application provides a measuring device with a cylindrical structure, including an intermediate support rod 1 and rollers 3. Among them, rotating rods 2 are arranged on two opposite sides of the intermediate support rod 1, and one end of the rotating rod 2 is rotatably connected to the intermediate support rod 1; the roller 3 is rotatably connected to the end of the rotating rod 2 far from the intermediate support rod 1.

[0045] Specifically, one end of the intermediate support rod 1 contacts the side wall of the cylindrical structure 4, and the side wall of the cylindrical structure 4 reversely spreads apart the rotating rods 2 on both sides of the intermediate support rod 1, and makes the rollers 3 contact the side wall of the cylindrical structure 4.

[0046] As Figure 4 shown, rotating shafts 5 are arranged on two opposite sides of the intermediate support rod 1, and one end of the rotating rod 2 is rotatably connected to the rotating shaft 5.

[0047] As a further illustration of this embodiment, the length of the intermediate support rod 1 should be less than the length of the rotating rod 2 so that the side wall of the cylindrical structure 4 can reversely spread apart the rotating rods 2 on both sides of the intermediate support rod 1.

[0048] As Figure 3 shown, the lengths of the rotating rods 2 on both sides of the intermediate support rod 1 are the same; the outer diameters of the rollers 3 on both sides of the intermediate support rod 1 are the same, so that the length of the intermediate support rod 1 and the outer diameter of the roller 3 can be directly used for calculating the radius of the cylindrical structure 4.

[0049] According to the above conditions, where O represents the connection point where the rotating rod 2 rotates on the intermediate support rod 1; P represents the length of the rotating rod 2; r represents the radius of the roller 3; n represents the length of the intermediate support rod 1; m represents the distance from the line segment connecting the centers of the two rollers 3 to the side wall of the cylindrical structure 4; α represents the rotation angle of the rotating rod 2 on the intermediate support rod 1; R represents the radius of the cylindrical structure 4.

[0050] Calculate the radius R of the cylindrical structure 4 according to the Pythagorean theorem:

[0051] (R + m) 2 +(P×sinα) 2 =(R + r) 2 ,

[0052] It can be calculated that:

[0053] R 2 +2Rm + m 2 +(P×sinα) 2 =R 2 +2Rr + r 2 ;

[0054] It is derived according to the Pythagorean theorem that:

[0055] (P × sinα) 2 = P 2 - (P × cosα) 2 ,

[0056] Therefore, it can be obtained that:

[0057] 2R(r - m) = m 2 - r 2 + (P 2 - (P × cosα) 2 );

[0058] Derived according to the Pythagorean theorem:

[0059] m = n - P × cosα,

[0060] Therefore, it can be obtained that:

[0061]

[0062] That is:

[0063] In the above formula, there is only one variable, that is, the rotation angle α of the rotating rod 2 on the middle support rod 1.

[0064] Through the above formula, the radius of the cylindrical structure 4 can be calculated, and then the diameter and circumference of the cylindrical structure 4 can be calculated. Therefore, it does not require a large amount of human resources.

[0065] In some embodiments, please continue to refer to Figure 4 , one end of the middle support rod 1 is provided with a limiting member 6. The limiting member 6 is located on one side of the rotating rod 2. Compared with the rotating rod 2, the limiting member 6 is closer to the end position of the middle support rod 1. The limiting member 6 is used to limit the opening angle of the rotating rod 2 on the middle support rod 1 to prevent the rotation angle of the rotating rod 2 on the middle support rod 1 from exceeding the preset rotation angle threshold and causing an uncontrollable situation.

[0066] As a further improved technical solution, a convex platform 601 is provided on the limiting member 6 for abutting against one end of the rotating rod 2, so that the opening angle of the rotating rod 2 on the middle support rod 1 does not exceed 90°. In short, a flat surface is provided on the convex platform 601. After one end of the rotating rod 2 fits with the flat surface, the opening angle of the rotating rod 2 on the middle support rod 1 reaches the maximum opening angle, that is, 90°.

[0067] A attaching layer 7 is detachably connected to the end of the middle support rod 1 away from the limiting member 6. The attaching layer 7 is used to attach to the side wall of the cylindrical structure 4 to prevent the end of the middle support rod 1 away from the limiting member 6 from being unstable after contacting the side wall of the cylindrical structure 4 and causing the phenomenon that the middle support rod 1 slides on the side wall of the cylindrical structure 4.

[0068] Specifically, the attachment layer 7 includes a silicone attachment layer. Of course, it should be understood that other materials other than silicone material can be selected to make the attachment layer 7 according to actual needs, which is not limited in this embodiment.

[0069] In some embodiments, Figure 5 As shown, the measuring device is also provided with an angular displacement sensor 8, a display 9 and a controller 10, wherein the angular displacement sensor 8 is arranged on the middle support rod 1 and connected to the rotating rod 2, and is used to sense the rotation angle of the rotating rod 2 on the middle support rod 1; the display 9 is used to display the rotation angle value of the rotating rod 2 on the middle support rod 1; the controller 10 is electrically connected to the angular displacement sensor 8 and the display 9, and the controller 10 receives the electrical signal of the rotation angle of the rotating rod 2 on the middle support rod 1 detected by the angular displacement sensor 8, and transmits the electrical signal to the display 9, thereby displaying the rotation angle value of the rotating rod 2 on the middle support rod 1 on the display 9, which has good intuitiveness and is conducive to the staff to check the rotation angle value of the rotating rod 2 on the middle support rod 1.

[0070] It should be noted that, under the condition of meeting actual needs, the angular displacement sensor 8 adopts any angular displacement sensor in the prior art; the display 9 adopts any display in the prior art; and the controller 10 adopts any controller in the prior art for receiving and outputting electrical signals.

[0071] According to the above embodiments, the cylindrical structure measuring device provided by the present application has at least the following beneficial effects:

[0072] (1) By making one end of the middle support rod 1 contact with the side wall of the cylindrical structure 4, the side wall of the cylindrical structure 4 pushes the rotating rods 2 on both sides of the middle support rod 1 in the opposite direction, and makes the roller 3 contact with the side wall of the cylindrical structure 4, and then uses the Pythagorean theorem to deduce the radius, diameter and circumference of the large cylindrical structure, without the need to allocate a large amount of human resources, thereby reducing labor costs;

[0073] (2) By using the two-point method to measure the side wall of the large cylindrical structure multiple times, it is possible to determine whether the side wall of the large cylindrical structure is an ideal perfect circle. If the side wall of the large cylindrical structure is an ideal perfect circle, the radius of the large cylindrical structure obtained by multiple calculations is consistent. Otherwise, the side wall of the large cylindrical structure is not an ideal perfect circle.

[0074] (3) It is difficult to form an accurate circle by manually using a tape measure to enclose the side wall of a large cylindrical structure, and there is a certain error. By using the cylindrical structure measuring device provided by the present application, the radius, diameter and circumference of the large cylindrical structure can be calculated with higher accuracy;

[0075] (4) By providing an attachment layer 7 at one end of the intermediate support rod 1 away from the limiting member 6, it is prevented that the end of the intermediate support rod 1 away from the limiting member 6 is unstable after contacting the side wall of the cylindrical structure 4, resulting in the phenomenon that the intermediate support rod 1 slides on the side wall of the cylindrical structure 4;

[0076] (5) By installing an angular displacement sensor 8, a display 9 and a controller 10 on the measuring device of the cylindrical structure 4, and the angular displacement sensor 8 is arranged on the intermediate support rod 1 and connected to the rotating rod 2, the rotation angle value of the rotating rod 2 on the intermediate support rod 1 can be displayed on the display 9, which has good intuitiveness and is beneficial for the staff to view the rotation angle value of the rotating rod 2 on the intermediate support rod 1.

[0077] In the description of this specification, the description with reference to terms such as "one embodiment" or "specific embodiment" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0078] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A measuring device for a cylindrical structure, characterized in that: include: An intermediate support rod (1), wherein rotating rods (2) are provided on both sides of the intermediate support rod (1), and one end of the rotating rod (2) is rotatably connected to the intermediate support rod (1); The roller (3) is rotatably connected to one end of the rotating rod (2) away from the middle supporting rod (1).

2. The measuring device for cylindrical structure according to claim 1, characterized in that: The intermediate support rod (1) is provided with rotating shafts (5) on two opposite sides, and one end of the rotating rod (2) is rotatably connected to the rotating shaft (5).

3. The measuring device for cylindrical structure according to claim 2, characterized in that: The length of the intermediate support rod (1) is smaller than the length of the rotating rod (2).

4. The measuring device for cylindrical structure according to claim 3, characterized in that: The lengths of the rotating rods (2) on both sides of the middle support rod (1) are the same.

5. The measuring device for cylindrical structure according to claim 4, characterized in that: The outer diameters of the rollers (3) on both sides of the middle support rod (1) are the same.

6. The measuring device for a cylindrical structure according to any one of claims 1 to 5, characterized in that: One end of the intermediate support rod (1) is provided with a limiting member (6) for limiting the opening angle of the rotating rod (2) on the intermediate support rod (1).

7. The measuring device for cylindrical structure according to claim 6, characterized in that: The limiting member (6) is provided with a boss (601) for abutting against one end of the rotating rod (2) so that the angle of the rotating rod (2) on the intermediate support rod (1) does not exceed 90°.

8. The measuring device for cylindrical structure according to claim 6, characterized in that: An end of the intermediate support rod (1) away from the limiting member (6) is detachably connected to an attachment layer (7), and the attachment layer (7) is used to be attached to the side wall of the cylindrical structure (4).

9. The measuring device for cylindrical structure according to claim 8, characterized in that: The attachment layer (7) comprises a silicone attachment layer.

10. The measuring device for cylindrical structure according to claim 2, characterized in that: The measuring device also includes: An angular displacement sensor (8) is arranged on the intermediate support rod (1) and connected to the rotating rod (2), and is used to sense the rotation angle of the rotating rod (2) on the intermediate support rod (1); A display (9) for displaying the rotation angle value of the rotating rod (2) on the intermediate support rod (1); A controller (10), the controller (10) being electrically connected to the angular displacement sensor (8) and the display (9), and being used for transmitting an electrical signal of the rotation angle of the rotating rod (2) on the intermediate support rod (1) sensed by the angular displacement sensor (8) to the display (9).

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