An adjustable flange bore gauge

Abstract

This utility model discloses an adjustable flange bore diameter gauge, relating to the field of flange inspection technology. The utility model includes a measuring ring column; two sets of symmetrically arranged square rings are fitted onto the outer wall of the measuring ring column. A measuring rod is fixed to the center of the lower end face of each set of square rings. Scale lines are provided on the front and rear outer walls of the measuring ring column. Inside the measuring ring column, located between the two sets of connecting strips, two sets of symmetrically arranged retracting rods are installed. Pull ropes are wound around the outer walls of each retracting rod. A spring is fitted onto a positioning rod at the end face of each set of square rings near the retracting rod. This utility model uses the two sets of square rings to drive the movement of the measuring rod, enabling rapid measurement of flange bore diameters of different sizes. The coordinated use of the retracting rods and springs controls the movement of the square rings, ensuring they do not slip automatically and guaranteeing measurement efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of flange inspection technology, and in particular relates to an adjustable flange bore gauge. Background Technology

[0002] Flanges are an indispensable basic connecting component in industrial fields such as petrochemicals, natural gas, shipbuilding, pressure vessels, and pipeline engineering. They are used to tightly connect two pipes, valves, or equipment together with bolts to form a sealed system that can withstand internal pressure, temperature, and media. In order to classify and distinguish flanges so that they can be adapted to pipes of different diameters, corresponding bore gauges are used to distinguish flanges. Existing flange bore gauges typically only measure bores of fixed sizes or within a limited range, failing to flexibly adapt to flanges of different specifications. This necessitates the use of multiple gauges, resulting in high costs and low efficiency. Furthermore, during measurement, the measuring components are prone to slippage due to external forces or their own weight, leading to inaccurate measurement results, poor repeatability, and impacting inspection efficiency and reliability. To address these issues, we provide an adjustable flange bore gauge. Utility Model Content

[0003] The purpose of this utility model is to provide an adjustable flange bore diameter gauge. By using two sets of square rings to drive the movement of the measuring rod, it can quickly measure flange bore diameters of different sizes. At the same time, the cooperation of the retracting rod and spring 1 controls the movement of the square rings, ensuring that the square rings do not slide automatically and guaranteeing measurement efficiency.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is an adjustable flange bore gauge, including a measuring ring column; the outer wall of the measuring ring column is fitted with two sets of square rings arranged symmetrically from left to right, and a measuring rod is fixed in the middle of the lower end face of each set of square rings. Scale lines are provided on the front and rear outer walls of the measuring ring column. Two sets of strip-shaped openings are provided on the lower end face of the measuring ring column. Connecting strips are fixed to the inner walls of the lower ends of the two sets of square rings, passing through the corresponding positions of the strip-shaped openings. Inside the measuring ring column between the two sets of connecting strips, two sets of retracting rods are provided, each with a pull rope wound around its outer wall. The other end of each pull rope is fixed with a locking plate bolted to the adjacent connecting strip. Square blocks are fixed to the end faces of the two sets of connecting strips, arranged alternately front to back. Inside the measuring ring column, two sets of positioning rods are provided, each square block being fitted onto the corresponding positioning rod through positioning holes opened through the side wall. A spring is provided on the end face of each set of square blocks near the retracting rod, fitted onto the positioning rod.

[0005] The present invention is further configured such that both ends of the measuring ring are bolted to the assembly plate, the assembly plate is bolted to the end face of the positioning rod, and the two ends of the spring abut against the corresponding assembly plate and the side wall of the block, respectively.

[0006] The present invention is further configured such that a T-shaped plate is bolted to the upper surface of the measuring ring column located between the two sets of square rings, and an inner toothed cylinder is fixed at the upper end of the T-shaped plate corresponding to the position of each set of retracting rods. A rotating plate is provided on the upper end of the inner toothed cylinder, and a toothed plate that meshes with the inner toothed cylinder is fixed on the lower end of the rotating plate.

[0007] The present invention is further configured such that the lower end face of the T-shaped plate is provided with a movable hole that communicates with the inside of the internal gear cylinder, and the upper end face of the measuring ring column is provided with a through hole corresponding to each movable hole, and the upper end face of the retracting rod passes through the corresponding through hole.

[0008] The present invention is further configured such that the upper end face of the retracting rod is provided with a linkage hole, the lower end face of each set of tooth plates is fixed with a connecting rod passing through the movable hole, the lower end face of the connecting rod is fixed with a circular plate, and the lower end face of the circular plate is fixed with a linkage rod inserted into the linkage hole.

[0009] The present invention is further configured such that two sets of insertion slots are evenly distributed in a ring along the inner wall of the linkage hole, and two sets of insertion strips are fixed on the outer wall of the linkage rod, which are respectively located in the insertion slots.

[0010] The present invention is further configured such that each of the connecting rods is fitted with a second spring, and the two ends of the second spring abut against the lower end face of the T-shaped plate and the end face of the circular plate, respectively.

[0011] This utility model has the following beneficial effects: 1. This utility model places two sets of measuring rods in the bore of the flange and controls the two sets of square rings to move along the measuring ring column. The square rings will directly and synchronously drive the measuring rods to move, so that the measuring rods abut against the inner wall of the flange. At this time, the distance between the two sets of square rings can be judged according to the scale lines, thereby directly determining the bore diameter of the flange, realizing the ability to quickly measure the bore diameter of flanges of different sizes.

[0012] 2. This utility model controls the rotation of two sets of retracting rods, which in turn loosen the pull rope. The spring used pushes the corresponding connecting strip to move in the measuring ring column, so that the connecting strip slides along the strip opening. This synchronously drives the square ring and the measuring rod to move, ensuring that the square ring will not slide automatically, ensuring the accuracy of the measurement, and improving the measurement efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the internal structure of this utility model.

[0015] Figure 2 External structural diagram of this utility model Figure 3 This is a structural diagram of the gathering rod, square ring, and positioning rod in this utility model.

[0016] Figure 4 This is an exploded view of the structure of the gathering rod, square ring, and rotating plate in this utility model.

[0017] Figure 5 This is a structural diagram of the retracting rod in this utility model.

[0018] Figure 6 This is a structural diagram of the rotating plate in this utility model.

[0019] Figure 7 This is a diagram of the external structure of the measuring ring column in this utility model.

[0020] The attached diagram lists the components represented by each number as follows: 1-Measuring ring column, 101-Strip opening, 102-Assembly plate, 103-T-shaped plate, 104-Scale line, 105-Through hole, 106-Modible hole, 107-Internal gear cylinder, 2-Retracting rod, 201-Pull rope, 202-Linkage hole, 203-Insertion, 204-Locking plate, 3-Positioning rod, 301-Spring one, 4-Square ring, 401-Measuring rod, 402-Connecting strip, 403-Square block, 404-Positioning hole, 5-Rotating plate, 501-Gear plate, 502-Linkage rod, 503-Spring two, 504-Insertion strip, 505-Round plate, 506-Connecting rod. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Example 1 Please see Figures 1 to 7 This utility model is an adjustable flange bore diameter gauge. By using two sets of square rings 4 to drive the movement of the measuring rod 401, it can quickly measure flange bore diameters of different sizes. At the same time, the cooperation of the retracting rod 2 and the spring 301 controls the movement of the square rings 4, ensuring that the square rings 4 do not slide automatically and ensuring measurement efficiency.

[0023] Specifically, the measuring ring column 1 has two sets of square rings 4 arranged symmetrically on its outer wall. A measuring rod 401 is fixed to the center of the lower end face of each set of square rings 4. Scale lines 104 are provided on both the front and rear outer walls of the measuring ring column 1. Two sets of strip-shaped openings 101 are provided on the lower end face of the measuring ring column 1. Connecting strips 402, passing through the corresponding positions of the strip-shaped openings 101, are fixed to the inner walls of the lower ends of the two sets of square rings 4. Two sets of symmetrically arranged receiving rings are provided inside the measuring ring column 1 located between the two sets of connecting strips 402. Both the gathering rod 2 and the retracting rod 2 have pull ropes 201 wrapped around their outer walls, and the other end of each pull rope 201 is fixed with a locking plate 204 that is bolted to the adjacent connecting strip 402. The end faces of the two sets of connecting strips 402 are fixed with square blocks 403 arranged in a staggered manner. The inside of the measuring ring column 1 is provided with two sets of positioning rods 3 arranged symmetrically in a staggered manner. The square blocks 403 are fitted onto the corresponding positioning rods 3 through positioning holes 404 through the side walls. The end faces of the two sets of square blocks 403 near the gathering rod 2 are provided with springs 301 fitted onto the positioning rods 3.

[0024] The operation process of this embodiment is as follows: When it is necessary to detect the flange bore diameter, two sets of measuring rods 401 are placed in the flange bore diameter, and two sets of square rings 4 are controlled to move along the measuring ring column 1. The square rings 4 will directly and synchronously drive the measuring rods 401 to move, so that the measuring rods 401 abut against the inner wall of the flange. At this time, the distance between the two sets of square rings 4 can be determined according to the scale line 104, thereby directly determining the flange bore diameter. At the same time, when it is necessary to adjust the distance between the two sets of square rings 4, the two sets of retracting rods 2 can be controlled to rotate, and then the two retracting rods 2 will release the pull rope 201. The spring 301 used will then push the corresponding connecting strip 402. The measuring ring 1 moves, causing the connecting bar 402 to slide along the strip opening 101. This synchronously drives the square ring 4 and the measuring rod 401 to move. When the retracting rod 2 rotates in the opposite direction, it winds up the pull rope 201, which in turn moves the two sets of connecting bars 402 in opposite directions. The two sets of connecting bars 402 synchronously drive the block 403 to compress the spring 301 connected to it. When the block 403 moves, it slides along the positioning rod 3 through the positioning hole 404. The positioning rod 3 limits the spring 301 to prevent it from bending excessively.

[0025] Example 2 Please see Figure 1 , Figure 2 and Figure 3 Based on Example 1, the use of the assembly plate 102 facilitates the opening of both ends of the measuring ring column 1, so as to disassemble and separate the internal structure of the measuring ring column 1.

[0026] Specifically, both ends of the measuring ring column 1 are bolted with assembly plates 102, and the assembly plates 102 are bolted to the end faces of the positioning rod 3. The two ends of the spring 301 abut against the corresponding assembly plates 102 and the side walls of the block 403, respectively.

[0027] The operation process of this embodiment is as follows: When it is necessary to disassemble the internal structure of the measuring ring column 1 by setting and using the above structure, the assembly plate 102 can be removed from both ends of the measuring ring column 1, and then the positioning rod 3 and spring 301 can be taken out from inside the measuring ring column 1. Then the locking plate 204 and the block 403 can be disassembled, and the square ring 4 can be slid directly along the radial position of the measuring ring column 1. The connecting strip 402 can be slid out of the strip opening 101, thereby disassembling the square ring 4 and the measuring ring column 1.

[0028] Example 3 Please see Figure 4 , Figure 5 , Figure 6 and Figure 7 Based on Example 1, the autonomous rotation of the retracting rod 2 can be ensured through the cooperation of the toothed plate 501 and the inner toothed cylinder 107.

[0029] Specifically, T-shaped plates 103 are bolted to the upper surface of the measuring ring column 1 located between the two sets of square rings 4. An internal gear cylinder 107 is fixed to the upper end of each T-shaped plate 103 at the position corresponding to each set of retracting rods 2. A rotating plate 5 is provided on the upper end of each internal gear cylinder 107. A toothed plate 501 is fixed to the lower end of each rotating plate 5, meshing with the inside of the internal gear cylinder 107. A movable hole 106 communicating with the inside of the internal gear cylinder 107 is opened on the lower end of each T-shaped plate 103. A through hole 105 is opened on the upper end of the measuring ring column 1 at the position corresponding to each movable hole 106. The upper end of each retracting rod 2 passes through the corresponding through hole 105. Each of the upper surfaces is provided with a linkage hole 202. Each set of toothed plates 501 has a connecting rod 506 fixed on its lower surface, which passes through the movable hole 106. Each set of connecting rods 506 has a circular plate 505 fixed on its lower surface. Each set of circular plates 505 has a linkage rod 502 inserted into the linkage hole 202. Each set of linkage holes 202 has two sets of insertion slots 203 evenly distributed in a ring along the inner wall. Each set of linkage rods 502 has two sets of insertion strips 504 fixed on its outer surface, which are respectively located in the insertion slots 203. Each set of connecting rods 506 is fitted with a second spring 503, and the two ends of the second spring 503 abut against the lower surface of the T-shaped plate 103 and the end surface of the circular plate 505, respectively.

[0030] The operation process of this embodiment is as follows: With the above-mentioned structure, in order to control the rotation or positioning of the retracting rod 2, when the control rotating plate 5 moves upward, the rotating plate 5 drives the toothed plate 501 to move inside the inner toothed cylinder 107. At this time, the control rotating plate 5 rotates, and then the rotating plate 5 drives the toothed plate 501, the connecting rod 506, the circular plate 505 and the linkage rod 502 to rotate. The linkage rod 502 drives the retracting rod 2 to rotate synchronously through the insert 504, so that the retracting rod 2 retracts or relaxes the pull rope 201. When it is necessary to position the retracting rod 2 to ensure that it does not rotate automatically, the spring 2 503 pushes the circular plate 505, so that the circular plate 505 is stably connected to the upper end face of the measuring ring column 1, and the toothed plate 501 is stably engaged in the inner toothed cylinder 107, so that the rotating plate 5 and the connecting rod 506 are limited, thereby controlling the linkage rod 502 and the retracting rod 2 to not rotate easily.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An adjustable flange bore gauge, comprising a measuring ring (1); characterized in that: The measuring ring column (1) has two sets of square rings (4) arranged symmetrically on the left and right sides on its outer wall. A measuring rod (401) is fixed in the middle of the lower end face of each set of square rings (4). The measuring ring column (1) has scale lines (104) on its front and rear outer walls. The measuring ring column (1) has two sets of strip-shaped openings (101) arranged symmetrically on the left and right sides on its lower end face. The inner walls of the lower ends of the two sets of square rings (4) are fixed with connecting strips (402) that pass through the corresponding strip-shaped openings (101). The measuring ring column (1) located between the two sets of connecting strips (402) has two sets of retracting rods (2) arranged symmetrically on the left and right sides inside its interior. The outer wall of the gathering rod (2) is wrapped with a pull rope (201), and the other end of the pull rope (201) is fixed with a locking plate (204) that is bolted to the adjacent connecting strip (402). The end faces of the two sets of connecting strips (402) are fixed with blocks (403) arranged in a staggered manner. The inside of the measuring ring column (1) is provided with two sets of positioning rods (3) arranged symmetrically in a staggered manner. The blocks (403) are sleeved on the corresponding positioning rods (3) through positioning holes (404) opened through the side wall. The end faces of the two sets of blocks (403) near the gathering rod (2) are provided with springs (301) sleeved on the positioning rods (3).

2. The adjustable flange bore gauge according to claim 1, characterized in that, The measuring ring column (1) has assembly plates (102) bolted to both ends. The assembly plates (102) are bolted to the end faces of the positioning rod (3). The two ends of the spring (301) abut against the side walls of the corresponding assembly plates (102) and blocks (403), respectively.

3. The adjustable flange bore gauge according to claim 1, characterized in that, T-shaped plates (103) are bolted to the upper surface of the measuring ring column (1) located between the two sets of square rings (4). An inner toothed cylinder (107) is fixed at the upper end of the T-shaped plate (103) corresponding to the position of each set of retracting rods (2). A rotating plate (5) is provided on the upper end of the inner toothed cylinder (107). A toothed plate (501) that meshes with the inner toothed cylinder (107) is fixed on the lower end of the rotating plate (5).

4. The adjustable flange bore gauge according to claim 3, characterized in that, The lower end face of the T-shaped plate (103) is provided with a movable hole (106) that communicates with the inside of the inner toothed cylinder (107). The upper end face of the measuring ring column (1) is provided with a through hole (105) corresponding to each movable hole (106). The upper end face of the gathering rod (2) passes through the corresponding through hole (105).

5. An adjustable flange bore gauge according to claim 4, characterized in that, The upper end face of the retracting rod (2) is provided with a linkage hole (202). The lower end face of each set of toothed plates (501) is fixed with a connecting rod (506) that passes through the movable hole (106). The lower end face of the connecting rod (506) is fixed with a circular plate (505). The lower end face of the circular plate (505) is fixed with a linkage rod (502) inserted into the linkage hole (202).

6. An adjustable flange bore gauge according to claim 5, characterized in that, The inner wall of the linkage hole (202) is provided with two sets of sockets (203) evenly distributed in a ring along the inner wall, and the outer wall of the linkage rod (502) is fixed with two sets of inserts (504) respectively located in the sockets (203).

7. An adjustable flange bore gauge according to claim 6, characterized in that, Each of the connecting rods (506) is fitted with a second spring (503), and the two ends of the second spring (503) abut against the lower end face of the T-shaped plate (103) and the end face of the round plate (505), respectively.

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