A semisphere height measuring device

Abstract

The utility model provides a kind of hemispherical height measuring equipment, including positioning fixture and measuring mechanism, measuring mechanism includes the horizontally arranged measuring plate of up and down movement, measuring plate is installed above positioning fixture, and positioning fixture includes locating plate, and locating plate includes the locating rod of bottom setting. Measure locating plate and locating rod combined height H1 before use, then locating rod is installed between hemispherical valve body mounting hole, locating plate upper end face is pasted in the lower end surface of measuring plate, and measuring plate is pressed to make valve body bottom resist to plane, measure the total height H of locating plate, locating rod and valve body, then the distance H2 of valve body mounting hole center axis to mounting hole inner side wall is measured using vernier caliper, and the height H3 of valve body=H-H1+H 2， Valve body mounting hole center axis to bottom arc surface height can be obtained.

Description

Technical Field

[0001] This utility model relates to the field of ball valve testing technology, and more specifically, to a hemispherical height measuring device. Background Technology

[0002] The core of a ceramic ball valve is the zero-leakage achieved through the mating of two valve seats with a ceramic ball. During the grinding of the valve seats and ball, the height of the valve seats needs continuous calibration to meet dimensional requirements. Traditional ball valves have spherical valve bodies. Currently, there are patents related to the measurement of spherical ceramic valve bodies. However, for... Figure 1 The height of the hemispherical ceramic valve body shown is measured from the center axis of the square mounting hole to the arc-shaped surface at the bottom. Currently, there is no relevant measuring equipment, so there is an urgent need for a device to measure the height of hemispherical ceramic valve bodies. Utility Model Content

[0003] This invention provides a hemispherical height measuring device, which aims to solve the technical problem of measuring the height of a hemispherical ceramic valve body.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a hemispherical height measuring device, comprising a positioning fixture and a measuring mechanism, wherein the measuring mechanism comprises a horizontally arranged measuring plate that can move up and down, the measuring plate being installed above the positioning fixture, the positioning fixture comprising a positioning plate, and the positioning plate comprising a positioning rod disposed at the bottom.

[0005] Furthermore, the positioning plate has two countersunk holes, and the positioning rod has two threaded holes, with bolts passing through the countersunk holes and locking into the threaded holes.

[0006] Furthermore, the measuring plate has several fixing holes, and the positioning plate has several threaded holes, with bolts passing through the fixing holes and locking into the threaded holes.

[0007] Furthermore, let X be the height from the central axis of the positioning rod to the upper surface of the positioning plate, where X > 50 mm.

[0008] Furthermore, the measuring mechanism includes a vertical guide plate, a slide rail mounted on the guide plate, a measuring plate mounted on the slide rail, a sensor fixed on one side of the measuring plate, and a display screen electrically connected to the sensor fixed near the upper end of the guide plate.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This utility model discloses a hemispherical height measuring device with a simple structure and ingenious design. It includes a positioning fixture and a measuring mechanism. The measuring mechanism includes a horizontally movable measuring plate mounted above the positioning fixture. The positioning fixture includes a positioning plate, and the positioning plate includes a positioning rod at its bottom. Before use, the combined height H1 of the positioning plate and positioning rod is measured. Then, the positioning rod is installed between the mounting holes of the hemispherical valve body, with the upper surface of the positioning plate pressed against the lower surface of the measuring plate. The measuring plate is pressed down so that the bottom of the valve body contacts the plane. The total height H of the positioning plate, positioning rod, and valve body is measured. Then, the distance H2 from the center axis of the valve body mounting hole to the inner wall of the mounting hole is measured using a vernier caliper. The height H3 of the valve body is calculated as H - H1 + H. 2， This gives the height from the center axis of the valve body mounting hole to the bottom arc surface. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the valve body structure;

[0013] Figure 2 This is a schematic diagram of the structure of a hemispherical height measuring device according to the present invention;

[0014] Figure 3 This is a schematic diagram of the positioning fixture of a hemispherical height measuring device installed on the valve body structure.

[0015] Figure 4 This is a schematic diagram of the positioning fixture structure of a hemispherical height measuring device according to this utility model;

[0016] Figure 5 This is a schematic diagram of the measuring mechanism structure of a hemispherical height measuring device according to this utility model.

[0017] Explanation of main component symbols

[0018] 10. Measuring mechanism; 101. Measuring plate; 102. Guide plate; 103. Slide rail;

[0019] 20. Positioning fixture; 201. Positioning plate; 202. Positioning rod;

[0020] 30. Valve body; 301. Mounting hole. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] Example

[0025] Reference Figure 2 As shown, this utility model discloses a hemispherical height measuring device, including a positioning fixture 20 and a measuring mechanism 10. The positioning fixture 20 makes the hemispherical valve body 30 have a horizontal surface, and the measuring mechanism is used to measure the height of the valve body 30 + positioning fixture 20 and the height of positioning fixture 20.

[0026] Reference Figures 2-5As shown, the measuring mechanism 10 includes a horizontally movable measuring plate 101, which is mounted above the positioning fixture 20. Specifically, the measuring mechanism 10 includes a vertical guide plate 102, a slide rail 103 mounted on the guide plate 102, and the measuring plate 101 mounted on the slide rail 103. A sensor is also fixed on one side of the measuring plate 101. A display screen electrically connected to the sensor is also fixed near the upper end of the guide plate 102. When the measuring plate 101 rises along the slide rail 103, the sensor collects the height of the rise and displays it on the display screen, which is used to measure the value in the height direction.

[0027] Reference Figures 2-5 As shown, the positioning fixture 20 includes a positioning plate 201, which includes a positioning rod 202 at its bottom. Specifically, the positioning plate 201 has two countersunk holes, and the positioning rod 202 has two threaded holes. Bolts pass through the countersunk holes and are locked in the threaded holes. First, the positioning rod 202 is passed through the mounting holes 301 on both sides of the valve body 30. Then, the positioning plate 201 is installed on the positioning rod 202 with bolts. The upper surface of the positioning plate 201 is pressed against the bottom of the measuring plate 101, so that the valve body 30 is in a vertical state, ensuring the accuracy of the measured dimensions. Furthermore, the height from the center axis of the positioning rod 202 to the upper surface of the positioning plate 201 is set to X, where X > 50mm. In this embodiment, the distance from the center axis of the mounting hole 301 of the valve body 30 to the top of the arc of the valve body 30 is less than 50mm. That is, when the positioning rod 202 and the positioning plate 201 are installed on the valve body 30, the combined height of the positioning rod 202 and the positioning plate 201 is greater than the distance from the center axis of the mounting hole 301 of the valve body 30 to the upper arc surface of the valve body 30, so that when the measuring plate 101 is pressed down, it abuts against the positioning plate 201.

[0028] In another embodiment, the measuring plate 101 has several fixing holes and the positioning plate 201 has several threaded holes. Bolts pass through the fixing holes and are locked in the threaded holes. Before measurement, the ball valve body 30 is installed on the positioning rod 202 and the positioning plate 201. Then, the positioning plate 201 is horizontally fixed to the bottom of the measuring plate 101 by bolts. This allows for multiple repeated measurements, and the average value is taken to further reduce errors and improve measurement accuracy.

[0029] The specific measurement method is as follows: First, measure the combined height H1 of the positioning plate 201 and the positioning rod 202. Then, install the positioning rod 202 between the mounting holes 301 of the hemispherical valve body 30. The upper end face of the positioning plate 201 is pressed against the lower end face of the measuring plate 101. Press down the measuring plate 101 so that the bottom of the valve body 30 touches the plane. Measure the total height H of the positioning plate 201, the positioning rod, and the valve body 30. Then, use a vernier caliper to measure the distance H2 from the center axis of the mounting hole 301 of the valve body 30 to the inner wall of the mounting hole 301. The height H3 of the valve body 30 is H-H1+H2, which gives the height from the center axis of the mounting hole 301 of the valve body 30 to the bottom arc surface.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hemispherical height measuring device, characterized in that; The device includes a positioning fixture and a measuring mechanism. The measuring mechanism includes a horizontally arranged measuring plate that can move up and down. The measuring plate is mounted above the positioning fixture. The positioning fixture includes a positioning plate, and the positioning plate includes a positioning rod at its bottom.

2. The hemispherical height measuring device according to claim 1, characterized in that: The positioning plate has two countersunk holes, and the positioning rod has two threaded holes. The bolt passes through the countersunk holes and is locked in the threaded holes.

3. The hemispherical height measuring device according to claim 1, characterized in that: The measuring plate has several fixing holes, and the positioning plate has several threaded holes. Bolts pass through the fixing holes and are locked in the threaded holes.

4. The hemispherical height measuring device according to claim 1, characterized in that: Let X be the height from the center axis of the positioning rod to the upper surface of the positioning plate, where X > 50 mm.

5. The hemispherical height measuring device according to claim 1, characterized in that: The measuring mechanism includes a vertical guide plate, a slide rail mounted on the guide plate, a measuring plate mounted on the slide rail, a sensor fixed on one side of the measuring plate, and a display screen electrically connected to the sensor fixed near the upper end of the guide plate.

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