Inspection rod for joint nut

Abstract

The utility model discloses an inspection rod for a joint nut, which comprises a fixing rod and the joint nut, the joint nut comprises a smooth hole and a threaded hole, the end part of the fixing rod is fixedly connected with an inspection terminal, the diameter of the inspection terminal is larger than that of the fixing rod, the periphery of the inspection terminal is provided with threads, and the inspection rod is fixedly connected with the inspection terminal. The part, located outside the threads, of the whole body of the detection terminal is a smooth surface, and the smooth surface is located at the end, away from the fixing rod, of the detection terminal. According to the utility model, whether the nut is qualified is determined by screwing the joint nut on the detection terminal and observing whether the smooth end of the detection terminal can reach the smooth hole of the joint nut, so that the detection efficiency and accuracy are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of joint nut manufacturing and processing, especially relates to a joint nut's inspection rod. BACKGROUND

[0002] The joint nut is a connecting sealing piece for connecting two pipes, the inner wall of the joint nut comprises a threaded surface and a smooth surface, the inner diameter of the threaded hole is larger than that of the smooth hole, the smooth surface is used for rotating on the pipe where it is located, and the threaded surface is used for connecting with the joint body.

[0003] The smooth hole and the threaded hole of the joint nut may generate coaxial difference during production, which affects the subsequent use, and it is difficult to find out by naked eyes, so a suitable detection device is needed to detect the joint nut. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a joint nut's inspection rod, which has the advantage of facilitating the inspection of the produced joint nut.

[0005] The above technical objective of the utility model is achieved by the following technical scheme:

[0006] A joint nut's inspection rod, comprising a fixed rod and a joint nut, wherein the end of the fixed rod is fixedly connected with a detection terminal, the diameter of the detection terminal is larger than that of the fixed rod, the detection terminal is provided with threads all around, the part of the detection terminal outside the threads is a smooth surface, and the smooth surface is located at the end of the detection terminal far from the fixed rod.

[0007] The threaded hole of the joint nut is close to the detection terminal, is sleeved on the detection terminal, and is twisted, and whether the smooth end of the detection terminal can enter the smooth hole of the joint nut is observed, if yes, it indicates that the opening of the threaded hole of the joint nut coincides with that of the smooth hole, and the threaded hole and the smooth hole are absolutely coaxial, if not, it indicates that the smooth end of the detection terminal is stopped by the opening of the smooth hole, the threaded hole and the smooth hole have a coaxial difference, and the product is unqualified.

[0008] As a preferred, a buffer step is arranged between the threaded surface and the smooth surface of the detection terminal, and the buffer step is integrally formed with the detection terminal.

[0009] When the detection terminal is inserted into the smooth hole of the joint nut, the buffer step stops the nut, prevents the nut from colliding with the threads of the detection terminal, causes damage to the threads, and affects the inspection accuracy.

[0010] As a preferred, the side of the buffer step close to the smooth surface of the detection terminal is fixedly connected with a wool felt.

[0011] The technical scheme is adopted, damage of the nut caused by the force between the buffer step and the joint nut is prevented, and product quality is reduced.

[0012] Preferably, the detection terminal is fixedly connected with the outer edge of one end of the fixing rod.

[0013] The technical scheme is adopted, when the worker holds the fixing rod and rotates the fixing rod and the nut, the detection terminal at the end close to the worker's hand does not cause injury to the worker's hand.

[0014] Preferably, the fixing rod is fixedly connected with a rubber sleeve on the outside.

[0015] The technical scheme is adopted, the friction between the hand and the fixing rod is increased, and the fixing rod is better rotated.

[0016] Preferably, the detection terminal is provided with multiple threads.

[0017] The technical scheme is adopted, joint nuts of different lengths can be inspected.

[0018] In summary, the detection tool is simple to operate, high in practicability, and high in detection accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a whole schematic view of an embodiment;

[0020] Fig. 2 It is a whole schematic view of another view of an embodiment.

[0021] The drawings show that: 1, a fixing rod; 2, a detection terminal; 3, a buffer step; 4, a wool felt; 5, a protective ring; 6, a rubber sleeve. DETAILED DESCRIPTION

[0022] The following description is only a preferred embodiment of the utility model, the protection scope is not limited to the embodiment only, and any technical scheme belonging to the utility model idea should belong to the protection scope of the utility model. Meanwhile, it should be pointed out that, for ordinary skilled in the art, a number of improvements and decorations without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

[0023] See Figs. 1-2A kind of joint nut's test bar, including fixed rod 1 and joint nut, joint nut includes smooth hole and threaded hole, the fixed rod 1 end is fixedly connected with detection terminal 2, detection terminal 2 diameter is greater than the diameter of fixed rod 1, the outer edge of the end of detection terminal 2 and fixed rod 1 connection is fixedly connected with protective ring 5, prevent when worker holds fixed rod 1, rotates it and nut, detection terminal 2 close to the end of worker's hand, cause injury to worker's hand, detection terminal 2 is provided with thread around, the portion outside thread of detection terminal 2 is smooth surface, smooth surface is located at the end of detection terminal 2 away from fixed rod 1, buffer step 3 is arranged between the threaded surface of detection terminal 2 and smooth surface, when detection terminal 2 is inserted into joint nut smooth hole, buffer step 3 blocks nut, prevent it from colliding with the thread of detection terminal 2, affect the inspection accuracy, buffer step 3 is integrally formed with detection terminal 2, wool felt 4 is fixedly connected to the side of buffer step 3 close to the smooth surface of detection terminal 2, prevent the force between buffer step 3 and joint nut from causing damage to nut, reduce product quality, fixed rod 1 outside is fixedly connected with rubber sleeve 6.

[0024] Working principle: make the threaded hole of joint nut close to detection terminal 2, and it is sleeved on detection terminal 2, nut is twisted, whether the smooth end of detection terminal 2 can enter the smooth hole of joint nut is observed, if it can indicate that the opening of threaded hole of joint nut and the opening of smooth hole coincide, be in absolute coaxial, if not, it indicates that the smooth end of detection terminal 2 is resisted by the opening of nut smooth hole, threaded hole and smooth hole exist coaxial difference, product is unqualified.

Claims

1. A test bar for a connector nut, comprising a fixing rod (1) and a connector nut, the connector nut including a smooth hole and a threaded hole, a test terminal (2) fixedly connected to the end of the fixing rod (1), the diameter of the test terminal (2) being larger than the diameter of the fixing rod (1), and the test terminal (2) having threads around its circumference, characterized in that, The smooth surface is located at the end of the detection terminal (2) away from the fixed rod (1).

2. An inspection bar for joint nuts according to claim 1, characterized in that A buffer step (3) is arranged between the threaded surface and the smooth surface of the detection terminal (2), and the buffer step (3) is integrally formed with the detection terminal (2).

3. An inspection bar for joint nuts according to claim 2, characterized in that The wool felt (4) is fixedly connected to the side close to the smooth surface of the detection terminal (2).

4. An inspection bar for joint nuts according to claim 1, characterized in that The outer edge of the end of the detection terminal (2) connected with the fixed rod (1) is fixedly connected with a protective ring (5).

5. An inspection bar for joint nuts according to claim 1, characterized in that The outer side of the fixed rod (1) is fixedly connected with a rubber sleeve (6).

6. An inspection bar for joint nuts according to claim 1, characterized in that The detection terminal (2) is provided with multiple threads.

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