Device for amplifying noise of mechanical listening rod

Abstract

The utility model discloses a device for amplifying noise of a mechanical listening rod, which comprises a listening metal rod, a listening tube, a chest tool, a leather hose and ear tools which are connected in sequence, the listening tube comprises a tube cover, a vibration diaphragm fixing bin and a tube body which are connected in sequence, the chest tool is of a hollow structure, the bottom end of the chest tool is connected with the tube cover, and the top end of the chest tool is connected with the leather hose. The vibration diaphragm fixing bin comprises a bin cover and a bin bottom, a vibration diaphragm is clamped between the bin cover and the bin bottom, and the sound listening metal bar is connected to the end, away from the barrel cover, of the barrel in a threaded mode. When the listening metal rod is in contact with the ground of the pipeline or the pipeline, weak noise generated by the pipeline is collected by utilizing a conduction principle, water leakage sound of the pipeline is transmitted into the listening barrel through the listening metal rod, the sound is amplified in the listening barrel through the vibration diaphragm, the sound amplified for the first time is amplified for the second time through the chest tool, and the sound is amplified for the second time through the chest tool. And the sound amplified twice is finally transmitted into the ear of a leak detection person through the leather hose and the ear tool, so that the amplification of collected noise is realized and the interference of external noise is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of leakage detection of water supply pipe networks, and particularly relates to a device for amplifying the noise of a mechanical listening rod. Background Art

[0002] For the mechanical listening rod used in water supply pipe network leakage detection, the lower metal rod of the listening rod needs to be in contact with the ground or the pipe of the pipeline, and the weak noise emitted by the pipeline is collected by using the conduction principle. The leakage sound of the pipeline is transmitted to the upper earphone through the metal rod. After being amplified by the vibration diaphragm in the earphone, it finally reaches the ears of the leak detection personnel. Generally speaking, the working principle of the mechanical listening rod is to convert the sound signal generated by the pipeline into a sound that we can hear through the conduction of the listening rod, thereby helping the leak detection personnel accurately judge the operating conditions of the pipeline and possible faults. When the external environmental noise is large, the noise transmitted by the earphone is even weaker. The weakness of the noise seriously affects the judgment of the leak detection personnel on the operating conditions of the pipeline, and affects the work efficiency and quality. Content of the Utility Model

[0003] The purpose of the utility model is to provide a device for amplifying the noise of a mechanical listening rod to solve the problem of the influence of external environmental noise on the mechanical listening rod.

[0004] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] A device for amplifying the noise of a mechanical listening rod includes a listening metal rod, a listening tube, a chest piece, a leather tube and an earpiece connected in sequence. The listening tube includes a tube cap, a vibration diaphragm fixing chamber and a tube body connected in sequence. The chest piece is of a hollow structure. The bottom end of the chest piece is connected to the tube cap, and the top end of the chest piece is fixedly connected to the leather tube. The vibration diaphragm fixing chamber includes a chamber cover and a chamber bottom. A vibration diaphragm is clamped between the chamber cover and the chamber bottom. The listening metal rod is screwed to the end of the tube body far from the tube cap.

[0006] In order to further implement the utility model, the chamber cover is fixedly connected to the tube cap, the chamber bottom is fixedly connected to the tube body, the outer walls of the chamber cover and the chamber bottom are provided with mutually matching threaded connections, and a step is arranged in the chamber bottom. The vibration diaphragm is clamped in the step.

[0007] In order to further implement the utility model, the central axes of the listening metal rod, the tube body, the chamber cover, the chamber bottom, the tube cap, the tube body section, the conical section, the leather tube and the earpiece are located on the same straight line.

[0008] In order to further implement the utility model, the chest piece includes a conical section and a tube body section connected to the conical section. The tube body section and the outer wall of the tube cap are provided with mutually matching threaded connections.

[0009] In order to further implement the utility model, a sealing rubber ring is also arranged between the outer wall of the tube body section and the tube cap.

[0010] To further implement the present utility model, the diameter of the vibration diaphragm fixing bin is larger than that of the cylinder cover and the cylinder body, and the diameter of the cylinder cover is larger than that of the cylinder body.

[0011] To further implement the present utility model, a reinforcement mechanism is provided at one end of the cylinder body away from the cylinder cover. The reinforcement mechanism includes a threaded pipe and a reinforcement threaded ring. The threaded pipe is arranged inside the end wall of the cylinder body, and the reinforcement threaded ring is arranged outside the end wall of the cylinder body. The end of the sound listening metal rod is sequentially screwed into the reinforcement threaded ring and the threaded pipe from outside to inside.

[0012] To further implement the present utility model, the reinforcement threaded ring is a frustum-shaped ring structure.

[0013] The beneficial effects of the present utility model compared with the prior art are as follows:

[0014] When the sound listening metal rod of the present utility model touches the ground or the pipeline of the pipeline, weak noises emitted by the pipeline are collected by using the conduction principle. The leaking water sound of the pipeline is transmitted into the sound listening cylinder through the sound listening metal rod. The sound is amplified by the vibration diaphragm inside the sound listening cylinder. The sound amplified once is amplified a second time through the chest piece. The sound amplified twice is finally transmitted to the ears of the leak detection personnel through the leather tube and the earpiece, so as to realize the amplification of the collected noise and the reduction of the interference of external noises.

[0015] The present utility model can greatly amplify the noise collected by the mechanical sound listening rod, assist the leak detection personnel to accurately judge the operation status of the pipeline, and improve the work efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model (showing a single earphone);

[0017] Figure 2 is a schematic structural diagram of the present utility model (showing a double earphone);

[0018] Figure 3 is Figure 1 a schematic structural diagram of part A in

[0019] The meanings of the reference numerals are as follows: 1, sound listening metal rod; 2, sound listening cylinder; 2-1, cylinder cover; 2-2, vibration diaphragm fixing bin; 2-2-1, bin cover; 2-2-2, bin bottom; 2-2-3, vibration diaphragm; 2-2-4, step; 2-3, cylinder body; 2-3-1, threaded pipe; 2-3-2, reinforcement threaded ring; 3, chest piece; 3-1, conical section; 3-2, pipe body section; 4, leather tube; 5, earpiece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0021] As Figures 1-3 shown, a device for amplifying the noise of a mechanical listening rod includes a listening metal rod 1, a listening cylinder 2, a chest piece 3, a leather tube 4, and an earpiece 5 connected in sequence. The listening cylinder 2 includes a cylinder cover 2-1, a vibration diaphragm fixing chamber 2-2, and a cylinder body 2-3 connected in sequence. The chest piece 3 is a hollow structure and includes a conical section 3-1 and a tube section 3-2 connected to the conical section 3-1. The tube section 3-2 and the outer wall of the cylinder cover 2-1 are provided with a threaded connection that matches each other, and a sealing rubber ring is also provided between the tube section 3-2 and the outer wall of the cylinder cover 2-1. The top end of the chest piece 3 is fixedly connected to the leather tube 4. The vibration diaphragm fixing chamber 2-2 includes a chamber cover 2-2-1 and a chamber bottom 2-2-2. The chamber cover 2-2-1 is fixedly connected to the cylinder cover 2-1, and the chamber bottom 2-2-2 is fixedly connected to the cylinder body 2-3. The outer walls of the chamber cover 2-2-1 and the chamber bottom 2-2-2 are provided with a threaded connection that matches each other. A step is provided inside the chamber bottom 2-2-2, and a vibration diaphragm 2-2-3 is clamped between the chamber cover 2-2-1 and the chamber bottom 2-2-2. The vibration diaphragm is clamped inside the step 2-2-4. The listening metal rod 1 is screwed to one end of the cylinder body 2-3 away from the cylinder cover 2-1.

[0022] Among them, the central axes of the listening metal rod 1, the cylinder body 2-3, the chamber cover 2-2-1, the chamber bottom 2-2-2, the cylinder cover 2-1, the tube section 3-2, the conical section 3-1, the leather tube 4, and the earpiece 5 are located on the same straight line.

[0023] Among them, the diameter of the vibration diaphragm fixing chamber 2-2 is larger than that of the cylinder cover 2-1 and the cylinder body 2-3, and the diameter of the cylinder cover 2-1 is larger than that of the cylinder body 2-3.

[0024] Among them, a reinforcement mechanism is provided at one end of the cylinder body 2-3 away from the cylinder cover 2-1. The reinforcement mechanism includes a threaded tube 2-3-1 and a reinforcement threaded ring 2-3-2. The threaded tube 2-3-1 is arranged inside the end wall of the cylinder body 2-3, and the reinforcement threaded ring 2-3-2 is arranged outside the end wall of the cylinder body 2-3. The end of the listening metal rod 1 is screwed into the reinforcement threaded ring 2-3-2 and the threaded tube 2-3-1 in sequence from the outside to the inside. The reinforcement threaded ring 2-3-1 is a frustum-shaped ring structure.

[0025] Among them, the earpiece 5 is a single earphone or a double earphone.

[0026] When the listening metal rod 1 is in contact with the ground or the pipeline of the pipeline, weak noise emitted by the pipeline is collected using the conduction principle. The leakage sound of the pipeline is transmitted to the inside of the listening cylinder 2 through the listening metal rod 1. The sound is amplified by the vibration diaphragm 2-2-3 inside the listening cylinder 1. The sound amplified once is amplified a second time through the chest piece 3. The sound amplified twice is finally transmitted to the ears of the leak detection personnel through the leather tube 4 and the earpiece 5, thereby realizing the amplification of the collected noise and reducing the interference of external noise.

Claims

1. An apparatus for amplifying the noise of a mechanical sound pick-up rod, characterized in that: It includes a listening metal rod (1), a listening tube (2), a chest piece (3), a leather tube (4) and an earpiece (5) connected in sequence. The listening tube (2) includes a tube cover (2-1), a vibration diaphragm fixing chamber (2-2) and a tube body (2-3) connected in sequence. The chest piece (3) is of a hollow structure. The bottom end of the chest piece (3) is connected to the tube cover (2-1), and the top end of the chest piece (3) is fixedly connected to the leather tube (4). The vibration diaphragm fixing chamber (2-2) includes a chamber cover (2-2-1) and a chamber bottom (2-2-2). A vibration diaphragm (2-2-3) is clamped between the chamber cover (2-2-1) and the chamber bottom (2-2-2). The listening metal rod (1) is screwed to one end of the tube body (2-3) away from the tube cover (2-1).

2. The device for amplifying mechanical listening rod noise according to claim 1, wherein: The chamber cover (2-2-1) is fixedly connected to the tube cover (2-1), the chamber bottom (2-2-2) is fixedly connected to the tube body (2-3), threaded connections that cooperate with each other are provided on the outer walls of the chamber cover (2-2-1) and the chamber bottom (2-2-2), a step (2-2-4) is provided inside the chamber bottom (2-2-2), and the vibration diaphragm is clamped inside the step (2-2-4).

3. The device for amplifying mechanical listening rod noise according to claim 1 or 2, characterized in that: The chest piece (3) includes a conical section (3-1) and a tube section (3-2) connected to the conical section (3-1). Threaded connections that cooperate with each other are provided on the outer wall of the tube section (3-2) and the outer wall of the tube cover (2-1).

4. The device for amplifying mechanical listening rod noise according to claim 3, characterized in that: The central axes of the listening metal rod (1), the tube body (2-3), the chamber cover (2-2-1), the chamber bottom (2-2-2), the tube cover (2-1), the tube section (3-2), the conical section (3-1), the leather tube (4) and the earpiece (5) are located on the same straight line.

5. The device for amplifying the mechanical listening rod noise according to claim 4, wherein: A sealing rubber ring is also provided between the outer wall of the tube section (3-2) and the tube cover (2-1).

6. The device for amplifying the mechanical listening rod noise according to claim 5, wherein: The diameter of the vibration diaphragm fixing chamber (2-2) is larger than that of the tube cover (2-1) and the tube body (2-3), and the diameter of the tube cover (2-1) is larger than that of the tube body (2-3).

7. The device for amplifying mechanical listening rod noise according to claim 6, characterized in that: A reinforcing mechanism is provided at one end of the tube body (2-3) away from the tube cover (2-1). The reinforcing mechanism includes a threaded tube (2-3-1) and a reinforcing threaded ring (2-3-2). The threaded tube (2-3-1) is arranged inside the end wall of the tube body (2-3), the reinforcing threaded ring (2-3-2) is arranged outside the end wall of the tube body (2-3), and the end of the listening metal rod (1) is screwed into the reinforcing threaded ring (2-3-2) and the threaded tube (2-3-1) from the outside to the inside in sequence.

8. The device for amplifying the mechanical listening rod noise according to claim 7, wherein: The reinforcing threaded ring (2-3-2) is a frustum-shaped ring structure.

9. The device for amplifying the mechanical listening rod noise according to claim 8, wherein: The earpiece (5) is a single earphone or a double earphone.

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