Pipeline angle detection mechanism

Abstract

The utility model belongs to the field of measurement, and relates to a pipeline angle detection mechanism, which comprises a shell, a detection part, a box body driving part and an indication part, the detection part and the indication part are arranged on the shell in parallel; the box body driving part is connected with the shell and drives the detection part to move along the axial direction of the detection part through the shell; the indicating part is movably connected with the detecting part. The utility model provides the pipeline angle detection mechanism with high measurement precision.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of measurement relates to a kind of angle detection mechanism, more particularly to a kind of pipeline angle detection mechanism. BACKGROUND

[0002] Current flowmeter is measured manually to pipeline first when correcting pipeline, and is corrected by repeatedly bending pipeline with manpower after measurement. Figure 1 As shown in the figure, it is measured by manually using vise+flat pad+right angle ruler, and the specific method is that the horizontal section of the measuring pipe is clamped by vise, a flat pad is placed above the vise, the flat pad is a standard cuboid, a right angle edge of the right angle ruler is placed above the flat pad, the other right angle edge is approached to the edge to be measured until it is attached, then whether the edge to be measured of the measuring pipe and the right angle edge are completely attached is observed, if attached, the angle is standard, if there is gap at one end, it needs to be corrected until completely attached. SUMMARY

[0003] In order to solve the above technical problems existing in the background art, the utility model provides a pipeline angle detection mechanism with high measurement accuracy.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A pipeline angle detection mechanism, characterized in that: the pipeline angle detection mechanism comprises a shell, a detection component, a box body driving element and an indicating component; the detection component and the indicating component are arranged in parallel on the shell; the box body driving element is connected with the shell and drives the detection component to move along the axial direction of the detection component through the shell; and the indicating component is movably connected with the detection component.

[0006] The detection component comprises a spring pressing plate, a spring and a detection rod; the detection rod is arranged on the shell along the axial direction of the spring through the spring pressing plate and the spring; the indicating component is connected with the detection rod; and the box body driving element drives the shell and the detection rod to move along the axial direction of the detection rod.

[0007] The detection component further comprises a detection ball arranged at the end of the detection rod.

[0008] The detection component further comprises a spring moving guide tube; the spring moving guide tube is arranged on the shell; and the spring is arranged in the spring moving guide tube along the axial direction of the spring moving guide tube.

[0009] The indicating component comprises a linkage rod, an indicating rod and a rotating shaft; the indicating rod is arranged in parallel with the detecting rod on the shell; the rotating shaft is perpendicular to the detecting rod in the axial direction; the linkage rod is sleeved on the rotating shaft and rotates around the axial direction of the rotating shaft; one end of the linkage rod is connected with the detecting rod, and the other end slides along the axial direction of the indicating rod.

[0010] The indicating rod is a sliding rheostat.

[0011] The number of the indicating components corresponds to the number of the detecting components; the detecting components are multiple, and the multiple detecting components are arranged on the shell in a matrix manner.

[0012] The box body driving member comprises a motor and a screw rod; the motor is connected with the shell through the screw rod and drives the detecting components to move along the axial direction of the detecting components through the shell.

[0013] The motor is a servo motor.

[0014] The shell is in the form of a U-shaped groove as a whole; the pipeline angle detection mechanism further comprises a cover plate arranged on the shell.

[0015] The pipeline angle detection mechanism has the advantages that:

[0016] The pipeline angle detection mechanism comprises a shell, detecting components, a box body driving member and an indicating component; the detecting components and the indicating component are arranged in parallel on the shell; the box body driving member is connected with the shell and drives the detecting components to move along the axial direction of the detecting components through the shell; and the indicating component is movably connected with the detecting components. The detecting components can be in contact with the to-be-calibrated measuring pipe; the indicating component is connected with the detecting components and indicates the angle detection result of the to-be-calibrated measuring pipe. Compared with the existing manual pipeline angle measurement mode, the pipeline angle detection mechanism has the advantages that the motor driving is high in automation degree and fast in measurement speed, the detecting rod of the pipeline angle detection mechanism directly contacts the to-be-calibrated measuring pipe, the measurement resolution of the detecting rod is amplified by using the lever principle, the detection result is higher in accuracy, multiple detecting components are used for simultaneous detection to reduce errors and improve the overall measurement accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of an angle measurement device in the prior art;

[0018] Figure 2 is a structural schematic view of a pipeline angle detection mechanism adopted by the utility model;

[0019] Figure 3 is a top view structural schematic view of a pipeline angle detection mechanism adopted by the utility model;

[0020] Among them:

[0021] 2 - to be calibrated measuring tube; 61 - motor; 62 - screw; 63 - indicating rod; 64 - connecting rod; 65 - rotating shaft; 66 - spring pressing plate; 67 - spring; 68 - housing; 69 - spring moving guide tube; 610 - cover plate; 611 - detecting rod; 612 - detecting ball. DETAILED DESCRIPTION

[0022] Referring to Figure 2 and Figure 3 , the pipeline angle detection mechanism 6 adopted by the utility model includes a housing 68, a detecting component, a box body driving element and an indicating component; the detecting component and the indicating component are arranged in parallel on the housing 68; the box body driving element is connected with the housing 68 and drives the detecting component to move along the axial direction of the detecting component through the housing 68; the detecting component can be in contact with the to-be-calibrated measuring tube 2; the indicating component is connected with the detecting component and indicates the angle detection result of the to-be-calibrated measuring tube 2. Among them, the number of indicating components corresponds to the number of detecting components; the detecting component is multiple, and the multiple detecting components are arranged in a matrix manner on the housing 68, referring to Figure 3 .

[0023] Exemplarily, referring to Figure 2 , the detecting component adopted by the utility model includes a spring pressing plate 66, a spring 67 and a detecting rod 611; the detecting rod 611 is arranged on the housing 68 along the axial direction of the spring 67 through the spring pressing plate 66 and the spring 67; the detecting rod 611 can be in contact with the to-be-calibrated measuring tube 2; the indicating component includes a connecting rod 64, an indicating rod 63 and a rotating shaft 65; the indicating rod 63 is arranged in parallel with the detecting rod 611 on the housing 68; the indicating rod 63 is a sliding resistor; the axial direction of the rotating shaft 65 is perpendicular to the axial direction of the detecting rod 611; the connecting rod 64 is sleeved on the rotating shaft 65 and rotates around the axial direction of the rotating shaft 65; one end of the connecting rod 64 is connected with the detecting rod 611, and the other end slides along the axial direction of the indicating rod 63; the box body driving element includes a motor 61 and a screw 62; the motor 61 drives the housing 68 and the detecting rod 611 to move along the axial direction of the detecting rod 611 through the screw 62. In addition, the detecting component further includes a detecting ball 612 and a spring moving guide tube 69; the detecting ball 612 is arranged at the end of the detecting rod 611; the detecting rod 611 can be in contact with the to-be-calibrated measuring tube 2 through the detecting ball 612; the spring moving guide tube 69 is arranged on the housing 68; the spring 67 is arranged in the spring moving guide tube 69 along the axial direction of the spring moving guide tube 69; the housing 68 is in the form of a U-shaped groove or a sunken groove structure with an open upper part; the pipeline angle detection mechanism 6 further includes a cover plate 610 arranged on the housing 68.

[0024] The utility model discloses a indicating rod innovatively change the traditional scale mode to the mode of sliding rheostat. Sliding rheostat is generally by terminal stud, slide, resistance wire, metal pole and porcelain cylinder five parts constitute, its structure is the mature technology embodiment of present, here no more repetition. Among them, resistance wire is the core component of sliding rheostat, usually selects the material such as nickel chromium alloy of high melting point, big resistance, metal pole selects small resistance metal to ensure that when accessing circuit, will not introduce too big resistance. Resistance wire is wound on the insulating porcelain cylinder, and is coated with insulating paint, to ensure the safety and stability of the circuit. The working principle of sliding rheostat is to change the length of resistance wire in the circuit to change the resistance value, and then control the current and voltage in the circuit. When the connecting rod 64 (slide) slides on the indicating rod, especially on the resistance wire, the length of the resistance wire in the circuit will change, according to the law of resistance (R = ρL / A), the resistance value R is proportional to the length L of the resistance wire, so the resistance value will change accordingly, so, through the conventional or commonly used current detection circuit or voltage detection circuit, the size of the current or the size of the voltage is directly obtained, and then the length of the resistance wire is obtained by back calculation, finally, the accurate position of the connecting rod 64 staying on the indicating rod 63 is obtained, and the accurate measurement of the deformation amount of the to-be-calibrated measuring tube 2 is realized.

[0025] The function of the detection ball 612 is to improve the accuracy of measurement. The principle is that the contact angle of the detection rod 611 with the to-be-calibrated measuring tube 2 is random, and any other geometric body cannot guarantee that it does not touch at the edge when it contacts the to-be-calibrated measuring tube 2. If it touches at the edge, it will generate a large pressure on the surface of the measuring tube, thereby generating a dent. Because the spring pressure of the detection rod 611 at different positions is not consistent, the depth of the dent is not consistent, thereby affecting the measurement accuracy. The ball surface has a larger contact area when contacting the to-be-calibrated measuring tube, and the pressure on the to-be-calibrated measuring tube 2 is smaller, so the dent generated is smaller, thereby improving the measurement accuracy.

[0026] For example, the motor 61 is fixedly connected with the base 1, the screw rod 62 is fixedly connected with the transmission shaft of the motor 61, the shell 68 is threadedly connected with the screw rod 62, the cover plate 610 is fixedly connected with the shell 68, the two rows of spring moving guide pipes 69 are symmetrically arranged on the shell 68, one end of the spring 67 is fixedly arranged in the spring moving guide pipe 69, the other end is provided with a spring pressing plate 66, the detection rod 611 is fixedly connected with the spring pressing plate 66, the detection ball 612 is fixedly connected with the detection rod 611, one end of the connecting rod 64 is rotatably connected with the bottom of the detection rod 611, the middle part is slidably connected with the rotating shaft 65 at the position deviated from the detection rod 611, the other end is slidably connected with the indicating rod 63, the rotating shaft 65 is rotatably connected with the shell 68, and the two rows of indicating rods 63 are symmetrically arranged on the shell. The purpose of arranging multiple measuring rods on the same side in the pipeline angle detection mechanism is to simultaneously measure and analyze multiple data, thereby reducing the measurement error.

[0027] The pipeline angle detection mechanism 6 adopted by the utility model, especially the detection rod 611 and the indicating rod 63 adopted, is to amplify the measurement distance by the lever principle, and the displacement of the detection rod 611 can be obtained through the scale on the indicating rod 63. Figure 2 And Figure 3 The use method of the pipeline angle detection mechanism 6 is that the shell 68 is pushed out by the screw rod 62 under the action of the motor 61, a plurality of detection rods 611 are pushed out by the shell 68, after being pushed to the to-be-calibrated measuring pipe 2, the detection rod 611 drives the connecting rod 64 to rotate and slide around the axial rotation shaft 65, the other end of the connecting rod 64 slides on the indicating rod 63 by a certain distance, the detection rods 611 at different positions extend by different lengths, and the sliding distance on the indicating rod 63 is also different, according to the scale on the indicating rod 63, the offset angle of the to-be-calibrated measuring pipe 2 can be calculated according to the Pythagorean theorem, and the to-be-calibrated measuring pipe 2 can be repeatedly pushed and pulled by the screw push-pull mechanism 5 according to the offset angle, so that the offset angle is corrected. Figure 3 The purpose of the matrix type detection rod 611 of the utility model is to simultaneously measure and analyze multiple groups of data, reduce measurement error, make the measurement more accurate, and be more beneficial to the push-pull action of the screw push-pull mechanism 5. For example, the utility model adopts two detection rods 611 on different sides, the distance between the two detection rods 611 is 100mm, the distance between the rotation shaft 65 and the indicating rod 63 is 20 times the distance between the rotation shaft 65 and the detection rod 611, that is, the indicating rod 63 can amplify the displacement of the detection rod 611 by 20 times, if the detection rod produces a displacement of 0.01mm (i.e. 10 microns), the displacement of the connecting rod 64 on the indicating rod 63 is 1mm, and at the same time, since the minimum resolution of the sliding resistor is 0.2mm, that is, the diameter of the sliding resistor enameled wire is 0.2mm, that is, the pipeline angle detection mechanism 6 can detect an error of 0.01mm (i.e. 10 microns) in a detection section of 100mm, and the measurement accuracy on a measuring pipe with a total length of 2000mm is 0.2mm, and most of the measuring pipes on the market currently have a total length of less than 2000mm. Obviously, the utility model can meet the micron-level precision detection.

Claims

1. A pipe angle detection mechanism, characterized in that: The pipe angle detection mechanism includes a housing (68), a detection component, a housing drive component, and an indicator component; the detection component and the indicator component are arranged in parallel on the housing (68); the housing drive component is connected to the housing (68) and drives the detection component to move along the axial direction of the detection component through the housing (68); the indicator component is movably connected to the detection component.

2. The pipeline angle detection mechanism according to claim 1, characterized in that: The detection component includes a spring plate (66), a spring (67), and a detection rod (611); the detection rod (611) is mounted on the housing (68) along the axial direction of the spring (67) via the spring plate (66) and the spring (67); the indicator component is connected to the detection rod (611); the housing drive component drives the housing (68) and the detection rod (611) to move along the axial direction of the detection rod (611).

3. The pipeline angle detection mechanism according to claim 2, characterized in that: The detection component also includes a detection ball (612) disposed at the end of the detection rod (611).

4. The pipe angle detection mechanism according to claim 3, characterized in that: The detection component also includes a spring-moving guide tube (69); the spring-moving guide tube (69) is disposed on the housing (68); the spring (67) is disposed in the spring-moving guide tube (69) along the axial direction of the spring-moving guide tube (69).

5. The pipe angle detection mechanism according to claim 4, characterized in that: The indicating component includes a linkage rod (64), an indicating rod (63), and a rotating shaft (65); the indicating rod (63) and the detection rod (611) are arranged in parallel on the housing (68); the axial direction of the rotating shaft (65) is perpendicular to the axial direction of the detection rod (611); the linkage rod (64) is fitted on the rotating shaft (65) and rotates around the axial direction of the rotating shaft (65); one end of the linkage rod (64) is connected to the detection rod (611), and the other end slides along the axial direction of the indicating rod (63).

6. The pipeline angle detection mechanism according to claim 5, characterized in that: The indicator rod (63) is a sliding rheostat.

7. The pipe angle detection mechanism according to any one of claims 1-6, characterized in that: The number of the indicating components corresponds to the number of the detection components; there are multiple detection components, which are arranged in a matrix on the housing (68).

8. The pipeline angle detection mechanism according to claim 7, characterized in that: The housing drive includes a motor (61) and a screw (62); the motor (61) is connected to the housing (68) through the screw (62) and drives the detection component to move along the axial direction of the detection component through the housing (68).

9. The pipe angle detection mechanism according to claim 8, characterized in that: The motor (61) is a servo motor.

10. The pipe angle detection mechanism according to claim 9, characterized in that: The housing (68) is U-shaped; the pipe angle detection mechanism (6) also includes a cover plate (610) disposed on the housing (68).

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