Diameter measuring device for flange spigot

Abstract

The invention discloses a device for measuring the diameter of a flange spigot, and the device comprises a fixed shaft, one end of the fixed shaft is fixedly connected with a fixed seat, the other end of the fixed shaft is rotatably connected with a first rotating sleeve, the fixed seat and the first rotating sleeve have the same diameter and are concentrically arranged, and the outer surface of the first rotating sleeve is fixedly connected with a telescopic measuring part. The end, away from the first rotating sleeve, of the telescopic measuring piece is fixedly connected with a cantilever, the cantilever is provided with a dial indicator, and the measuring end of the dial indicator and the connecting face of the telescopic measuring piece and the cantilever are located on the same plane. The fixing base abuts against the outer surface of the flange spigot, the cantilever is pushed to enable the measuring end of the dial indicator to sweep the outer surface of the flange spigot, the diameter of the flange spigot can be obtained by adding the maximum value measured by the dial indicator and the total length of the telescopic measuring piece, operation is easy, a using block is not needed in the measuring process, and the measuring efficiency is improved. Measurement work can be carried out by a single person, and the measurement speed is also improved.

Description

Technical Field

[0001] The invention belongs to the technical field of flange diameter measurement, and in particular relates to a diameter measuring device for a flange stop. Background Art

[0002] The diameter measurement of the flange stop is an important part of the mechanical manufacturing and assembly process. As an important part of pipelines, valves or other mechanical connectors, the accuracy of flanges directly affects the sealing, strength and working stability of the equipment. The stop refers to a concave or convex part on the flange, which is usually used to cooperate with another part (such as a gasket or seal) for sealing or positioning.

[0003] In the processing and manufacturing of flange end covers, the measurement of the flange stop diameter has always been a difficult point, and it requires highly skilled inspectors to accurately complete the measurement work, because the outer diameter of the flange stop cannot be directly measured with a micrometer, because the flange surface interferes with the micrometer handle position, it is necessary to add a standard gauge block during measurement, extend the stop diameter to the outer edge of the flange, and subtract the size of the standard gauge block from the measured value. The value obtained is the true value of the stop.

[0004] The above method has high requirements on the skills of the measurement personnel. It is necessary to control the gauge block and accurately find the highest point of the stopper. Generally, two people are needed to cooperate to complete the measurement, and the measurement can only be performed when the flange is stationary. Not only is the operation difficult, but the efficiency is also low. Summary of the invention

[0005] The present invention aims at solving the problems in the prior art and proposes the following technical solutions:

[0006] A diameter measuring device for a flange stopper, comprising a fixed shaft, one end of the fixed shaft being fixedly connected to a fixed seat, and the other end being rotatably connected to a rotating sleeve, the fixed seat and the rotating sleeve having the same diameter and being concentrically arranged, a telescopic measuring piece being fixedly connected to the outer surface of the rotating sleeve, an end of the telescopic measuring piece away from the rotating sleeve being fixedly connected to a cantilever, a micrometer being mounted on the cantilever, and the measuring end of the micrometer being located on the same plane as the connecting surface between the telescopic measuring piece and the cantilever.

[0007] As a preferred embodiment of the above technical solution, an adsorption member is installed on a side of the fixing seat away from the fixing axis.

[0008] As a preferred embodiment of the above technical solution, the adsorption component includes a suction cup and a magnet, and at least two suction cups are provided.

[0009] As a preferred embodiment of the above technical solution, the telescopic measuring piece includes a measuring ruler 1 and a measuring ruler 2, the measuring ruler 2 is movably sleeved in the inner circle of the measuring ruler 1, a threaded hole 1 is opened on one side of the measuring ruler 1, a fastening bolt is threadedly connected to the threaded hole 1, and the end of the fastening bolt is in contact with the measuring ruler 2.

[0010] As a preferred embodiment of the above technical solution, the total length of measuring ruler one and measuring ruler two is: L, the maximum value of the micrometer is: M, the diameter of the flange stop is: D, and the measurement formula of the flange stop diameter is: L+M=D.

[0011] As a preferred embodiment of the above technical solution, a limiting mechanism is also included:

[0012] The limiting mechanism comprises a supporting assembly and a transmission assembly, both of which are rotatably mounted on the outer surface of the fixed shaft, and the transmission assembly is arranged between the two supporting assemblies for controlling the two supporting assemblies to move toward each other.

[0013] As a preferred embodiment of the above technical solution, the support assembly includes a rotating sleeve 2, the outer ring fixed sleeve of the rotating sleeve 2 is provided with a gear ring, the outer surface of the gear ring is fixedly connected with a support arm, the end of the support arm away from the gear ring is hinged with a support plate, and the side of the support plate away from the support arm is abutted against the outer surface of the flange stop.

[0014] As a preferred embodiment of the above technical solution, the transmission assembly includes a transmission shaft, the end of the transmission shaft is rotatably connected to a transmission gear, an elastic member is arranged between the transmission gear and the fixed shaft, and the transmission gear is meshed with two gear rings.

[0015] As a preferred embodiment of the above technical solution, the transmission gear is provided with a second threaded hole, the second threaded hole is threadedly connected with a threaded rod, both ends of the threaded rod are respectively fixedly connected with a knob and an anti-slip part, and the anti-slip part is against the fixed shaft.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention places the fixing seat against the outer surface of the flange stopper, pushes the cantilever to make the measuring end of the micrometer sweep across the outer surface of the flange stopper, and the maximum value measured by the micrometer is added to the total length of the telescopic measuring piece to obtain the diameter of the flange stopper. Not only is the operation simple, but no gauge block is required during measurement, and the measurement work can be performed by one person, which also improves the measurement speed;

[0018] 2. The present invention can fix the fixing seat on the flange through the adsorption piece. When the dial gauge is pushed to rotate with the fixed shaft as the axis, it can be operated with one hand. At the same time, when the flange is processed on the lathe, the measurement personnel do not need to fix the fixed shaft on one side to keep the fixing seat stable and push the cantilever on the other side to drive the dial gauge to rotate, thereby reducing the workload of the measurement personnel;

[0019] 3. The present invention cooperates with the thread of the fastening bolt and the threaded hole 1. When the fastening bolt is rotated, the end of the fastening bolt located inside the measuring ruler 1 will move away from or close to the measuring ruler 2. When the fastening bolt moves away from the measuring ruler 2, the total length of the measuring ruler 1 and the measuring ruler 2 can be adjusted. When the fastening bolt abuts against the measuring ruler 2, the length of the measuring ruler 1 and the measuring ruler 2 cannot be adjusted, so that the device can measure the diameters of flanges of different specifications.

[0020] 4. In the present invention, when the fixed seat and one side of the connection surface between the rotating sleeve and the telescopic measuring piece are against the outer surface of the flange stop, the transmission assembly controls the two supporting assemblies to approach the outer surface of the flange stop, and a stable triangular fulcrum is formed by a transmission assembly and two supporting assemblies, so that when the rotating sleeve rotates, the fixed seat is more stable, which is convenient for the measurement personnel to push the cantilever while recording the data measured by the micrometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure diagram of a flange stop diameter measuring device in an embodiment is shown;

[0022] Figure 2 What is shown is a schematic diagram of the structure of the adsorption member in the embodiment;

[0023] Figure 3 What is shown is a schematic diagram of the measurement operation of the micrometer in the embodiment;

[0024] Figure 4 What is shown is a schematic diagram of the structure of the limiting mechanism in the embodiment;

[0025] Figure 5 Shown is a schematic structural diagram of a transmission assembly in an embodiment.

[0026] Description of reference numerals:

[0027] 11. Fixed shaft; 12. Fixed seat; 13. Adsorption member; 131. Suction cup; 132. Magnet; 14. Rotating sleeve one; 15. Telescopic measuring member; 151. Measuring ruler one; 152. Measuring ruler two; 153. Fastening bolt; 16. Cantilever; 17. Micrometer; 20. Limiting mechanism; 21. Support assembly; 22. Transmission assembly; 211. Rotating sleeve two; 212. Gear ring; 213. Support arm; 214. Support plate; 221. Transmission shaft; 222. Transmission gear; 223. Elastic member; 224. Threaded rod; 225. Knob; 226. Anti-slip member. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0029] Example 1

[0030] like Figure 1 As shown, a diameter measuring device for a flange stopper includes a fixed shaft 11, one end of the fixed shaft 11 is fixedly connected to a fixed seat 12, and the other end is rotatably connected to a rotating sleeve 14, the fixed seat 12 and the rotating sleeve 14 have the same diameter and are concentrically arranged, a telescopic measuring piece 15 is fixedly connected to the outer surface of the rotating sleeve 14, and an end of the telescopic measuring piece 15 away from the rotating sleeve 14 is fixedly connected to a cantilever 16, the cantilever 16 is installed with a micrometer 17, and the measuring end of the micrometer 17 and the connecting surface of the telescopic measuring piece 15 and the cantilever 16 are located on the same plane.

[0031] Specifically, during measurement, first, the fixed seat 12 located on one side of the connecting surface of the rotating sleeve 14 and the telescopic measuring piece 15 needs to be aligned with the outer surface of the flange stop, and then the measuring end of the micrometer 17 is moved to the vicinity of the center line of the highest point close to the flange stop according to the naked eye, and the measuring end is aligned with the outer surface of the stop, and finally the cantilever 16 can be pushed to make the measuring end of the micrometer 17 sweep across the outer surface of the flange stop, and the maximum value measured by the micrometer 17 is added to the total length of the telescopic measuring piece 15 to obtain the diameter of the flange flange stop. Not only is the operation simple, but there is no need to use a gauge block during measurement, and one person can perform the measurement work, which also improves the measurement speed.

[0032] like Figure 1 and Figure 2 As shown, a suction member 13 is installed on a side of the fixing seat 12 away from the fixing shaft 11 .

[0033] It should be noted that the fixed seat 12 can be fixed on the flange by the adsorption part 13, and when the micrometer 17 is pushed to rotate with the fixed shaft 11 as the axis, the operation can be performed with one hand. At the same time, when the flange is processed on the lathe, the measurement personnel does not need to fix the fixed shaft 11 on one side to keep the fixed seat 12 stable, and push the cantilever 16 on the other side to drive the micrometer 17 to rotate, thereby reducing the workload of the measurement personnel.

[0034] like Figure 2 As shown, the adsorption member 13 includes a suction cup 131 and a magnet 132 . The suction cup 131 and the magnet 132 are both fixed to the bottom of the fixing base 12 , and at least two suction cups 131 are provided.

[0035] It should be noted that the magnet 132 is disposed at the center of the fixing seat 12 , and the suction cups 131 are disposed in a circular array with the magnet 132 as the axis.

[0036] like Figure 1and Figure 2 As shown, the telescopic measuring member 15 includes a measuring ruler 151 and a measuring ruler 152. The sides of the measuring ruler 151 and the measuring ruler 152 that are away from each other are fixedly connected to the rotating sleeve 14 and the cantilever 16 respectively. The measuring ruler 152 is movably sleeved in the inner circle of the measuring ruler 151. A threaded hole 1 is opened on one side of the measuring ruler 151. The threaded hole 1 is threadedly connected with a fastening bolt 153. The end of the fastening bolt 153 is in conflict with the measuring ruler 152.

[0037] Specifically, by the threaded cooperation between the fastening bolt 153 and the threaded hole 1, when the fastening bolt 153 is rotated, the end of the fastening bolt 153 located inside the measuring scale 151 will move away from or approach the measuring scale 2 152. When the fastening bolt 153 moves away from the measuring scale 2 152, the total length of the measuring scale 151 and the measuring scale 2 152 can be adjusted. When the fastening bolt 153 and the measuring scale 2 152 are against each other, the length of the measuring scale 151 and the measuring scale 2 152 cannot be adjusted, so that the device can measure the diameters of flanges of different specifications.

[0038] like Figure 3 As shown, the total length of the measuring ruler 151 and the measuring ruler 2 152 is: L, the maximum value of the micrometer 17 is: M, the diameter of the flange stop is: D, and the measuring formula of the flange stop diameter is: L+M=D.

[0039] Example 2

[0040] like Figure 1 and Figure 4 As shown, a diameter measuring device for a flange stopper is provided. Compared with Example 1, this embodiment further includes a limiting mechanism 20. The limiting mechanism 20 includes a supporting assembly 21 and a transmission assembly 22. Both the supporting assembly 21 and the transmission assembly 22 are rotatably mounted on the outer surface of the fixed shaft 11. The transmission assembly 22 is arranged between the two supporting assemblies 21 for controlling the two supporting assemblies 21 to move toward each other.

[0041] It should be noted that when the fixed seat 12 and one side of the connection surface between the rotating sleeve 14 and the telescopic measuring piece 15 are in contact with the outer surface of the flange stop, the transmission component 22 controls the two support components 21 to approach the outer surface of the flange stop, and a stable triangular fulcrum is formed by a transmission component 22 and two support components 21, so that when the rotating sleeve 14 rotates, the fixed seat 12 is more stable, which is convenient for the measurement personnel to push the cantilever 16 while recording the data measured by the micrometer 17.

[0042] like Figure 4As shown, the support assembly 21 includes a rotating sleeve 211, which is rotatably sleeved on the outer ring of the fixed shaft 11. The outer ring of the rotating sleeve 211 is fixedly sleeved with a gear ring 212, and the outer surface of the gear ring 212 is fixedly connected to a support arm 213. The end of the support arm 213 away from the gear ring 212 is hinged with a support plate 214, and the side of the support plate 214 away from the support arm 213 is against the outer surface of the flange stop.

[0043] like Figure 5 As shown, the transmission assembly 22 includes a transmission shaft 221, the end of the transmission shaft 221 is rotatably connected to a transmission gear 222, the other end of the transmission shaft 221 is fixedly connected to the fixed shaft 11, or rotatably connected, an elastic member 223 is arranged between the transmission gear 222 and the fixed shaft 11, the elastic member 223 adopts but is not limited to the use of a torsion spring, both ends of the torsion spring are fixedly connected to the transmission gear 222 and the fixed shaft 11, and the transmission gear 222 is meshed with two gear rings 212.

[0044] Specifically, the force of the elastic member 223 will push the transmission gear 222 to rotate, so that in the absence of any external interference, the two support plates 214 will move towards each other. When the fixed seat 12 moves toward the outer surface of the stopper of the flange, the two support plates 214 will first contact the stopper and eventually stretch it open to form a stable triangular fulcrum with the fixed seat 12.

[0045] like Figure 5 As shown, the transmission gear 222 is provided with a threaded hole 2, and the threaded hole 22 is threadedly connected to a threaded rod 224. The two ends of the threaded rod 224 are respectively fixedly connected with a knob 225 and an anti-slip member 226. The anti-slip member 226 is against the fixed shaft 11. The anti-slip member 226 is made of but not limited to rubber.

[0046] Specifically, by the threaded cooperation between the threaded rod 224 and the second threaded hole, when the knob 225 is turned to drive the threaded rod 224 to rotate, the anti-slip part 226 can be driven away from or close to the fixed shaft 11. When the anti-slip part 226 is away from the fixed shaft 11, the transmission gear 222 can rotate freely. When the anti-slip part 226 is close to the fixed shaft 11 and abuts against it, the transmission gear 222 cannot rotate, thereby positioning the two support arms 213, so that when the device measures the flange stop of the same size, there is no need to repeatedly find the fulcrum. It only needs to ensure that the rotating sleeve 211 and the two support plates 214 are in contact with the flange stop, and the cantilever 16 can be pushed to drive the micrometer 17 to measure.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them.

Claims

1. A flange stop diameter measuring device, characterized in that: The invention comprises a fixed shaft (11), one end of which is fixedly connected to a fixed seat (12), and the other end of which is rotatably connected to a rotating sleeve (14), the fixed seat (12) and the rotating sleeve (14) having the same diameter and being concentrically arranged, the outer surface of the rotating sleeve (14) being fixedly connected to a telescopic measuring piece (15), one end of the telescopic measuring piece (15) away from the rotating sleeve (14) being fixedly connected to a cantilever (16), the cantilever (16) being provided with a micrometer (17), the measuring end of the micrometer (17) and the connecting surface of the telescopic measuring piece (15) and the cantilever (16) being located on the same plane; The fixing seat (12) abuts against the outer surface of the flange stop, and the cantilever (16) is pushed to make the measuring end of the micrometer (17) sweep across the outer surface of the flange stop. The maximum value measured by the micrometer (17) is added to the total length of the telescopic measuring piece (15) to obtain the diameter of the flange stop.

2. A flange flange diameter measuring device according to claim 1, characterized in that: A suction piece (13) is installed on the side of the fixing seat (12) away from the fixing shaft (11).

3. The flange flange diameter measuring device according to claim 2, characterized in that: The adsorption member (13) comprises a suction cup (131) and a magnet (132), and at least two suction cups (131) are provided.

4. The flange flange diameter measuring device according to claim 1, characterized in that: The telescopic measuring member (15) comprises a first measuring ruler (151) and a second measuring ruler (152), wherein the second measuring ruler (152) is movably sleeved in the inner ring of the first measuring ruler (151), a threaded hole (1) is provided on one side of the first measuring ruler (151), a fastening bolt (153) is threadedly connected to the first threaded hole, and an end of the fastening bolt (153) contacts the second measuring ruler (152).

5. The flange flange diameter measuring device according to claim 4, characterized in that: The total length of the measuring ruler 1 (151) and the measuring ruler 2 (152) is: L, the maximum value of the micrometer (17) is: M, the diameter of the flange stop is: D, and the measuring formula of the flange stop diameter is: L+M=D.

6. The flange flange diameter measuring device according to claim 1, characterized in that: It also includes a limiting mechanism (20): The limiting mechanism (20) comprises a supporting assembly (21) and a transmission assembly (22); the supporting assembly (21) and the transmission assembly (22) are both rotatably mounted on the outer surface of the fixed shaft (11); the transmission assembly (22) is arranged between the two supporting assemblies (21) and is used to control the two supporting assemblies (21) to move toward each other.

7. A flange flange diameter measuring device according to claim 6, characterized in that: The support assembly (21) comprises a second rotating sleeve (211), the outer ring fixed sleeve of the second rotating sleeve (211) is provided with a gear ring (212), the outer surface of the gear ring (212) is fixedly connected with a support arm (213), one end of the support arm (213) away from the gear ring (212) is hinged with a support plate (214), and the side of the support plate (214) away from the support arm (213) is against the outer surface of the flange stop.

8. The flange flange diameter measuring device according to claim 7, characterized in that: The transmission assembly (22) comprises a transmission shaft (221), the end of the transmission shaft (221) is rotatably connected to a transmission gear (222), an elastic member (223) is provided between the transmission gear (222) and the fixed shaft (11), and the transmission gear (222) is meshed with two gear rings (212).

9. The flange flange diameter measuring device according to claim 8, characterized in that: The transmission gear (222) is provided with a second threaded hole, the second threaded hole is threadedly connected with a threaded rod (224), and the two ends of the threaded rod (224) are respectively fixedly connected with a knob (225) and an anti-slip member (226), and the anti-slip member (226) is against the fixed shaft (11).

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