Measuring device for cylinder, elliptic cylinder and spherical surface

Abstract

The utility model discloses a measuring device for a cylinder, an elliptic cylinder and a spherical surface, which comprises a sliding sleeve, a movable measuring probe slides in the sliding sleeve, the bottom end of the movable measuring probe penetrates out of the sliding sleeve, the sliding sleeve is provided with scale marked lines along the length direction of the sliding sleeve, and the movable measuring probe is provided with indication marked lines; a connecting bottom frame is arranged on the outer side of the sliding sleeve, and a plurality of measuring supporting legs are connected to the bottom of the connecting bottom frame. The beneficial effects are that a plurality of measuring support legs are in contact cooperation with a to-be-measured surface, the movable measuring probe moves up and down, so that the indicating marking line indicates the scale marking line on the sliding sleeve, the radius / diameter of the outer wall of a cylinder, the radius / diameter of the long side / short side of an elliptic cylinder and the radius / diameter of a spherical surface can be measured, and the device is simple in overall structure and convenient to operate. Operation is simple, using is convenient, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the field of measuring devices, in particular to a measuring device for cylinders, elliptic cylinders and spherical surfaces. Background Art

[0002] During the installation process of structures such as steel pipe columns, pipe trusses and grid structures in engineering construction, it is often necessary to locate the positions of the centers of steel pipes and spheres. In conventional measurements, personnel need to place a prism on the top of the pipe or sphere for measurement, and obtain the required data through conversion. Moreover, it is necessary to cooperate with instruments such as a tape measure, a gauge and a spherical measuring instrument for measurement. The operation is relatively cumbersome and many tools are used.

[0003] However, in actual construction, measurement errors often occur because the highest point cannot be accurately found. When there are many specifications and the specifications are similar, it is impossible to directly know the diameter of the rod or the sphere. When measuring the specifications or ovality of a circular pipe and a sphere, especially for large-sized components, such as a steel column or a welded sphere with a diameter of 1 m, there is no small and portable measuring tool.

[0004] Therefore, it is a problem worthy of research to provide a measuring device for cylinders, elliptic cylinders and spherical surfaces with a simple and portable structure. Content of the Utility Model

[0005] In order to solve the deficiencies existing in the above-mentioned prior art, the purpose of the utility model is to quickly measure the sizes of cylinders, elliptic cylinders and spherical surfaces, and the whole device has a simple operation and is convenient to use.

[0006] The purpose of the utility model is achieved as follows:

[0007] A measuring device for cylinders, elliptic cylinders and spherical surfaces provided by the utility model includes a sliding sleeve, an active measuring probe slides inside the sliding sleeve, the bottom end of the active measuring probe penetrates out of the sliding sleeve, scale marks are arranged on the sliding sleeve along its length direction, and an indicating mark for indicating the scale marks is arranged on the active measuring probe;

[0008] A connecting base frame is arranged on the outer side of the sliding sleeve, a plurality of measuring legs are connected to the bottom of the connecting base frame, and the measuring legs are circumferentially distributed with the axis of the active measuring probe as the reference.

[0009] Preferably, the sliding sleeve is made of a transparent material.

[0010] Preferably, the number of the measuring legs is three or four.

[0011] Preferably, the top ends of the measuring legs are threadedly connected to the connecting base frame.

[0012] Preferably, it further includes a reference plate and a calibration block. The calibration block is located in the middle of the reference plate. The reference plate contacts and supports the measuring legs, and the calibration block contacts and supports the movable measuring probe to assist in calibrating the auxiliary measuring legs and the movable measuring probe.

[0013] Preferably, the bottoms of the measuring legs and the movable measuring probe are both in an inverted conical structure.

[0014] Preferably, a thrust spring for pushing the movable measuring probe to slide downward is provided in the sliding sleeve.

[0015] Preferably, a first leveling bubble for assisting in leveling is provided on the connecting chassis.

[0016] Preferably, a connecting seat is connected to the upper end of the sliding sleeve. A movable threaded seat is provided in the connecting seat. An alignment prism is detachably connected to the threaded seat. A fixing bolt for fixing the threaded seat is connected to the outer wall of the connecting seat. A second leveling bubble for assisting in leveling is provided on the alignment prism.

[0017] Preferably, a diagonal brace is connected between the connecting seat and the connecting chassis. The connection position of the diagonal brace and the connecting chassis corresponds to the measuring legs.

[0018] Positive and beneficial effects:

[0019] In the use of this device, by using the contact and cooperation of multiple measuring legs with the surface to be measured, the movable measuring probe moves up and down, and the indicating scale line indicates the scale line on the sliding sleeve, which can realize the measurement of the radius / diameter of the outer wall of a cylinder, the radius / diameter of the long side / short side of an elliptical cylinder, and the radius / diameter of a spherical surface. The overall structure of the device is simple, the operation is simple, and the use is convenient.

[0020] In actual work, it can assist in the measurement of the cross-section of a circular pipe / cylinder, the ovality of an elliptical pipe / cylinder, the size of a sphere, and the measurement and determination of the position of the sphere center. The device is small in size, has multiple functions, and has a wide range of applications. Description of the drawings

[0021] Figure 1 is a schematic internal structure diagram of the present invention;

[0022] Figure 2 is Figure 1 a schematic structure diagram during calibration;

[0023] Figure 3 is Figure 1 a top view;

[0024] Figure 4 is a top view of the present invention when the number of measuring legs is three;

[0025] Figure 5 This is a schematic structural diagram of the present utility model when the alignment prism is installed;

[0026] Figure 6 is Figure 5 a schematic structural diagram during calibration;

[0027] Figure 7 This is an enlarged schematic diagram of the internal structure when the sliding sleeve and the movable measuring probe are connected in the present utility model;

[0028] Figure 8 This is a schematic structural diagram of the alignment prism and the second leveling bubble in the present utility model;

[0029] Figure 9 is Figure 1 a schematic diagram during the measurement of a circular tube / column;

[0030] Figure 10 is Figure 5 a schematic diagram during the measurement of a circular tube / column;

[0031] Figure 11 is Figure 1 a schematic diagram during the measurement of a sphere;

[0032] Figure 12 is Figure 1 a schematic diagram during the measurement of an elliptical tube / column;

[0033] In the figure: sliding sleeve 1, scale marking 101, connecting seat 2, connecting chassis 3, diagonal brace 301, support bar 302, rib plate 303, measuring leg 4, movable measuring probe 5, indicating marking 501, thrust spring 502, first leveling bubble 6, alignment prism 7, second leveling bubble 701, extension rod 702, reference plate 8, calibration block 9. Detailed implementation manners

[0034] The following further describes the present utility model with reference to the drawings and embodiments. Embodiment 1

[0035] Referring to Figures 1 - 12 as shown, a measuring device for cylinders, elliptical cylinders, and spherical surfaces provided by the present utility model includes a sliding sleeve 1. The sliding sleeve 1 is vertically arranged. An movable measuring probe 5 slides inside the sliding sleeve 1. The bottom end of the movable measuring probe 5 passes through the sliding sleeve 1. The sliding sleeve 1 is provided with a scale marking 101 along its length direction. The movable measuring probe 5 is provided with an indicating marking 501 for indicating the scale marking 101. Specifically, the sliding sleeve 1 is made of a transparent material, and the indicating marking 501 can be used to indicate the scale marking 101, thereby judging the measurement result;

[0036] A connecting chassis 3 is provided on the outer side of the sliding sleeve 1, and three or four measuring legs 4 are connected to the bottom of the connecting chassis 3. The measuring legs 4 are circumferentially distributed with the axis of the movable measuring probe 5 as the reference;

[0037] When the number of the measuring legs 4 is three, only the diameter of the spherical surface can be detected. Refer to Figure 4 As shown, during the measurement operation, when the bottoms of the three measuring legs 4 are in contact with the spherical surface, the movable measuring probe 5 slides towards the inner end of the sliding sleeve 1 at this time. The indicating scale line 501 on the movable measuring probe 5 indicates the scale line 101. The scale line 101 can directly mark the radius / diameter of the detected spherical surface, so as to indicate the radius / diameter of the spherical surface and facilitate the positioning of the center of the sphere;

[0038] When the number of the measuring legs 4 is four, refer to Figure 3 As shown, it can detect the measurement of the radius / diameter of the outer wall of the cylinder, the radius / diameter of the long side / short side of the elliptical cylinder, and the radius / diameter of the spherical surface. The operation is as follows:

[0039] When measuring the cross-sectional dimension of a circular tube / cylinder, refer to Figures 9 - 10 As shown, make the bottoms of the four measuring legs 4 all contact with the outer wall of the circular tube / cylinder. At this time, the measuring legs 4 are divided into left and right groups, and each group has two measuring legs 4. The connection line of each group of measuring legs 4 is parallel to the axis of the pipeline. Then the two relatively corresponding measuring legs 4 on the left and right realize the measurement of the outer diameter of the pipeline. At this time, the scale line 101 is marked as the radius / diameter of the cylindrical surface, and the reading of the scale line 101 pointed to by the indicating scale line 501 is the radius / diameter of the circular tube / cylinder;

[0040] When detecting the ellipticity of an elliptical tube / cylinder, refer to Figure 11As shown, the bottom end of the movable measurement probe 5 corresponds to the long side / short side position of the outer wall of the elliptical tube / column respectively. The left and right groups of measurement legs 4 are respectively arranged on both sides of the movable measurement probe 5. The connection line of each group of measurement legs 4 is parallel to the length connection line of the elliptical tube / column, so that the bottom end of the measurement leg 4 contacts the outer wall of the elliptical tube / column. According to the sliding distance of the movable measurement probe 5 inside the sliding sleeve 1, the radius / diameter size of the long side / short side of the outer wall of the elliptical tube / column can be observed by reading the scale marking 101. When the scale marking 101 is marked as the radius size, the reading is the radius size of the long side / short side of the outer wall of the elliptical tube / column. When the scale marking 101 is marked as the diameter size, the reading is the diameter size of the long side / short side of the elliptical tube / column. In the calculation of roundness, roundness = (maximum outer diameter - minimum outer diameter) / nominal outer diameter * (100)%. At this time, the roundness can be calculated quickly, that is, the maximum outer diameter corresponds to the short side diameter of the elliptical tube / column, the minimum outer diameter corresponds to the long side diameter of the elliptical tube / column, and the nominal outer diameter is found from the corresponding standard, so that the roundness of the elliptical tube / column can be calculated;

[0041] Since when measuring the long side / short side of the elliptical pipe, the positions of the four measurement legs 4 are the same as those when measuring the cylindrical surface size, the size readings at the long side / short side position of the elliptical pipe can be quickly observed according to the cylindrical surface size.

[0042] When measuring and determining the sphere size and the sphere center position, refer to Figure 12 As shown, the bottom ends of the four measurement legs 4 are in contact with the spherical surface. Then, as the bottom end of the movable measurement probe 5 contacts the spherical surface, the inner end of the movable measurement probe 5 slides towards the sliding sleeve 1. The marking of the scale marking 101 can be set as the marked size of the spherical radius / diameter. Then, the reading of the scale marking 101 pointed to by the indicating marking 501 is the radius / diameter of the spherical surface. After detecting multiple angles of the spherical surface, it is convenient to judge the sphere center position.

[0043] In a preferred embodiment, the marking of the scale marking 101 is two groups of data. One group of data corresponds to the outer radius / diameter of the columnar outer wall, and the other group of data corresponds to the outer radius / diameter of the spherical surface. When reading, the reading is selected according to the measured structure.

[0044] Furthermore, it further includes a reference plate 8 and a calibration block 9. Refer to Figure 2 、 Figure 6As shown in the figure, the calibration block 9 is located in the middle of the reference plate 8. The calibration block 9 has a standard height. The reference plate 8 contacts and supports the measuring leg 4, and the calibration block 9 contacts and supports the movable measuring probe 5. The auxiliary measuring leg 4 and the movable measuring probe 5 are aligned. Before performing the measurement operation, the device needs to be calibrated. During calibration, the bottom ends of all the measuring legs 4 are in contact with the surface of the reference plate 8, so that the calibration block 9 corresponds to the movable measuring probe 5. Then, when the bottom end of the movable measuring probe 5 contacts the calibration block 9, it slides towards the inside of the sliding sleeve 1. In the calibration standards of the reference plate 8 and the calibration block 9, according to the indication of the thrust spring 502 and the scale marking 101, it can be judged whether the measurement of the device is in an accurate state, improving the accuracy of the device during the detection operation. In a preferred embodiment, the top end of the measuring leg 4 is threadedly connected to the connecting chassis 3. When the data indicated by the thrust spring 502 pointing to the scale marking 101 is inaccurate during the detection of the reference plate 8 and the calibration block 9 by the device, the adjustment operation can be performed by adjusting the measuring leg 4, that is, after screwing the measuring leg 4, the length of the measuring leg 4 at the bottom end of the connecting chassis 3 is adjusted, thereby calibrating the device and improving the accuracy of the detection result.

[0045] Further, a rib plate 303 for supporting the measuring leg 4 is provided at the bottom of the connecting chassis 3 to support the measuring leg 4 and assist the measuring leg 4 to be in a vertical state.

[0046] Embodiment 2 is different from Embodiment 1 in the following features:

[0047] See Figure 7 As shown in the figure, a thrust spring 502 for pushing the movable measuring probe 5 to slide downward is provided in the sliding sleeve 1. The thrust spring 502 can be used to push the movable measuring probe 5 to slide downward to assist the movable measuring probe 5 to reset.

[0048] Embodiment 3 is different from Embodiment 1 in the following features:

[0049] In the structure of the connecting chassis 3, the connecting chassis 3 is a plate-like structure or a frame-like structure. The connection position of the connecting chassis 3 and the sliding sleeve 1 is close to the bottom end of the sliding sleeve 1. When the connecting chassis 3 is a frame-like structure, the measuring leg 4 is close to the edge of the connecting chassis 3, and the connection between the connecting chassis 3 and the sliding sleeve 1 is realized through a connecting rod. A first leveling bubble 6 for assisting in leveling the connecting chassis 3 is provided on the connecting chassis 3. See Figure 3 、 Figure 4 As shown in the figure, the first leveling bubble 6 can be used to make the connecting chassis 3 in a horizontal state. In the connection between the measuring leg 4 and the connecting chassis 3, the connection between the measuring leg 4 and the connecting chassis 3 can be realized by means of threaded connection, or the fixing connection between the measuring leg 4 and the connecting chassis 3 can be realized by means of fixed connection such as welding and bonding.

[0050] Example 4, different from Example 1 in that:

[0051] See Figure 1 , Figure 6 , Figure 8 , Figure 10 As shown, a connecting seat 2 is fixedly connected to the high end of the sliding sleeve 1. The upper part of the connecting seat 2 is of an open structure, and a movable threaded seat is arranged inside it. An alignment prism 7 is detachably connected to the threaded seat. A fixing bolt for limiting and fixing the threaded seat is connected to the outer wall of the connecting seat 2. A second leveling bubble 701 for assisting in leveling is arranged on the alignment prism 7. In a preferred embodiment, the bottom end of the alignment prism 7 is threadedly connected to the threaded seat. Further, an extension rod 702 is further included. Threaded sections connected to the inner end of the connecting seat 2 and a threaded seat connected to the bottom end of the alignment prism 7 are respectively arranged at both ends of the extension rod 702, which can fix the alignment prism 7 at a position farther from the connecting base frame 3 for easy observation and positioning. A brace 301 is connected between the connecting seat 2 and the connecting base frame 3. The connection position of the brace 301 and the connecting base frame 3 corresponds to the measuring leg 4. The brace 301, the connecting base frame 3 and the sliding sleeve 1 can form a triangular stable support structure. A support bar 302 is connected between the brace 301 and the connecting base frame 3 to realize the support of the brace 301. During the use of the alignment prism 7, the position of the measuring leg 4 is reflected by the reflecting surface on the alignment prism 7 for observation. Further, the positions of the measuring leg 4 and the movable measuring probe 5 can also be observed through the positions of the brace 301 and the support bar 302 to check whether they are in an aligned state. Not only can the connecting base frame 3 be assisted to be leveled by the first leveling bubble 6 to ensure that the plane formed by the four bottom points of the measuring leg 4 is perpendicular to the alignment prism 7, but also the alignment prism 7 auxiliary device can be used to level and align.

[0052] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A measuring device for a cylinder, an elliptical cylinder or a sphere, comprising a sliding sleeve (1), characterized in that: A movable measuring probe (5) slides inside the sliding sleeve (1), the bottom end of the movable measuring probe (5) passes through the sliding sleeve (1), the sliding sleeve (1) is provided with scale markings (101) along its length direction, and the movable measuring probe (5) is provided with an indication marking line (501) for indicating the scale marking line (101); A connecting base frame (3) is provided on the outside of the sliding sleeve (1), a plurality of measuring legs (4) are connected to the bottom of the connecting base frame (3), and the measuring legs (4) are distributed in a circle with the axis of the movable measuring probe (5) as a reference.

2. A measuring device for a cylinder, an elliptical cylinder, or a sphere according to claim 1, characterized in that: The sliding sleeve (1) is made of a transparent material.

3. A measuring device for a cylinder, an elliptical cylinder, or a sphere according to claim 2, characterized in that: The number of the measuring legs (4) is three or four.

4. The measuring device for cylinders, elliptical cylinders and spheres according to claim 3, characterized in that: The top end of the measuring leg (4) is threadedly connected to the connecting base frame (3).

5. The measuring device for cylinders, elliptical cylinders and spheres according to claim 4, characterized in that: Also included is a reference plate (8) and a calibration block (9), The calibration block (9) is located in the middle of the reference plate (8); the reference plate (8) contacts and supports the measuring legs (4); the calibration block (9) supports and contacts the movable measuring probe (5), thereby assisting in the calibration of the measuring legs (4) and the movable measuring probe (5).

6. The measuring device for cylinders, elliptical cylinders and spheres according to claim 1, characterized in that: The bottom ends of the measuring legs (4) and the movable measuring probe (5) are both in an inverted conical structure.

7. A measuring device for a cylinder, an elliptical cylinder or a sphere according to claim 1 or 6, characterized in that: A thrust spring (502) is provided in the sliding sleeve (1) for pushing the movable measuring probe (5) to slide downward.

8. The measuring device for cylinders, elliptical cylinders and spheres according to claim 1, characterized in that: The connecting base frame (3) is provided with a first leveling bubble (6) for assisting the leveling thereof.

9. The measuring device for cylinders, elliptical cylinders and spheres according to claim 1, characterized in that: The high end of the sliding sleeve (1) is connected to a connecting seat (2), a movable threaded seat is provided inside the connecting seat (2), an alignment prism (7) is detachably connected to the threaded seat, a fixing bolt for fixing the threaded seat is connected to the outer wall of the connecting seat (2), and a second leveling bubble (701) for assisting the alignment prism (7) in leveling is provided on the alignment prism (7).

10. The measuring device for cylinders, elliptical cylinders and spheres according to claim 9, characterized in that: An oblique brace (301) is connected between the connecting seat (2) and the connecting base frame (3), and the connecting position of the oblique brace (301) and the connecting base frame (3) corresponds to the measuring leg (4).

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