Special equipment abnormal sound and vibration auxiliary detection device for machine maintenance
By designing a detection device for sound transmission catheter and auscultative headphones, the problem of difficulty in judging abnormal noise in traditional methods is solved, and the effect of accurate judgment in noisy environments and cost reduction is achieved.
Patent Information
- Application Number
- CN202421107741.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When repairing mechanical transmission parts, traditional methods rely on human ear auscultation to judge abnormal noise, making it difficult to accurately judge the noise signal frequency interference, and professional testing equipment is costly and inconvenient to use.
Design a detection device including acoustic conduit, acoustic hose and auscultural headset. The probe contacts mechanical components with an arc tip, and transmits sound to the auscultural headset through acoustic conduit and acoustic hose, reducing noise interference and providing Telescopic structure and sound source amplifier to improve judgment accuracy.
It realizes accurate identification of abnormal noise in noisy environments, reduces maintenance costs, improves the accuracy and safety of judgments, and facilitates timely detection of mechanical failures.
Smart Images
Figure CN222258463U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a testing device for the dynamic balance of machine parts, in particular to an auxiliary detection device for abnormal noise and vibration of equipment specially used for machine repair. Background Art
[0002] At present, the maintenance of mechanical transmission parts first needs to judge whether there are abnormal noises in the transmission parts based on the sound, such as abnormal noises in the engine valves, abnormal noises in the gear sets of the gearbox, abnormal noises in the bearings, etc. The traditional method is to directly inspect the parts through metal pipes, and then use human hearing to determine the location and characteristics of the noise source. The method is simple, but because a lot of noise signal frequencies will be generated during the mechanical transmission process, which interferes with people's auscultation of abnormal sounds, this method requires the accumulation of rich experience, and it is difficult for general maintenance personnel to make accurate judgments, which affects the judgment of mechanical transmission failures, and it is difficult to judge abnormal noises that are slightly far away in a noisy environment. Professional testing equipment is expensive and not very convenient to use. Summary of the invention
[0003] In order to solve the above problems, the utility model provides a device for auxiliary detection of abnormal noise and vibration of equipment specially used for machine repair, which has simple structure, low cost and convenient use.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an auxiliary detection device for abnormal noise and vibration of equipment specially used for machine repair, comprising a sound conduction tube 1, a sound guide hose 2 and a stethoscope earphone 3, a probe 5 is arranged at the front end of the sound conduction tube 1, and the contact end of the probe 5 with the equipment is an arc tip, the other end of the sound conduction tube 1 is connected to the sound guide hose 2, and a non-slip hand-held part 6 is arranged on the sound conduction tube 1 at the front end of the connection end of the sound guide hose 2; the sound guide hose 2 is a rubber tube, and the end of the sound guide hose 2 away from the sound conduction tube 1 is a three-way structure, and the two interfaces at the upper end are respectively connected to the left channel and the right channel of the stethoscope earphone 3, and the stethoscope earphone 3 is an existing head-mounted audio playback earphone.
[0005] Preferably, the upper portion of the sound conduction tube 1 , near the hand-held portion 6 , is connected to a sound source amplifier 7 .
[0006] Preferably, the sound conduction tube 1 is provided with multiple sections, and two adjacent sections are connected by snap-fit connections to form a telescopic structure.
[0007] Furthermore, the probe 5 is arranged at the front end of the sound conduction tube 1 through the mounting seat 4. The probe 5 is a trumpet-shaped hollow tube, the end in contact with the equipment is an arc tip, and the small mouth end is provided with a ball head 9. The probe 5 is rotatably connected to the mounting seat 4. The other end of the mounting seat 4 is provided with a screw hole, and one end of the sound conduction tube 1 is provided with an external thread, and the sound conduction tube 1 is screwed into the screw hole of the mounting seat 4 through the external thread.
[0008] The specific structure between the probe 5 and the sound transmission tube 1 is: a ball socket interface 8 is provided at one end of the mounting seat 4, and a ball head 9 is provided in the ball socket interface 8. In actual use, when the sound transmission tube 1 and the probe 5 are used to detect the equipment, by changing the angle of the probe 5, the probe 5 can achieve sliding contact with the equipment in different directions, and the arc tip can be in soft contact with the mechanical transmission parts to prevent scratches or damage to the mechanical transmission parts.
[0009] When the utility model needs to auscultate whether the mechanical transmission component has abnormal sound, the probe 5 contacts the mechanical transmission component, and the auscultation earphone 3 is normally worn on the human ear, which can prevent the interference of other noise signal frequencies, so that people can accurately auscultate the abnormal sound and accurately judge the mechanical transmission fault. When the mechanical transmission component is operating normally, the sound is smooth and soft, without vibration; when the mechanical transmission component fails, there is vibration, the sound is harsh and irregular, and accompanied by abnormal sounds such as "click". Therefore, it is possible to accurately judge whether the mechanical transmission has a fault based on whether the mechanical transmission component has abnormal sound.
[0010] Beneficial effects: ① The utility model has a simple structure, low price, low use cost, can clearly identify the form of abnormal sound in a noisy environment, and eliminate the influence of the use environment.
[0011] ② The equipment sound received by the probe 5 of the utility model can be transmitted to the stethoscope earphone 3 through the sound conduction tube 1 and the sound guide tube 2, so that the working sound of the production equipment can be transmitted to the human ear, and the maintenance personnel can hear the abnormal sound generated when the production equipment is working in time, and judge whether there is a risk of failure in the production equipment in time, so as to find the failure in time.
[0012] ③ The sound transmission tube 1 of the utility model is set as a retractable structure, which can flexibly adjust the length according to different needs. The design of the binaural earpiece can form stereo sound, which is convenient for determining the location of the fault point; the probe 5 and the equipment contact end are arc tips, which are connected by the mounting seat 4, so that the probe 5 and the equipment can achieve sliding contact in different directions. The arc tip can be in soft contact with the mechanical transmission parts to prevent scratches or damage to the mechanical transmission parts, thereby improving safety and reliability and being quick to use. The design of the sound source amplifier 7 can amplify the abnormal sound, which is convenient for the staff to identify the abnormal sound. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the utility model.
[0014] Figure 2 This is a schematic structural diagram of Example 2 of the utility model.
[0015] Figure 3 This is a schematic diagram of the structure of the mounting seat of the utility model.
[0016] In the figure: sound conduction tube 1, sound guide tube 2, stethoscope earphone 3, mounting base 4, probe 5, hand-held part 6, sound source amplifier 7, ball and socket interface 8, ball head 9. DETAILED DESCRIPTION
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0018] Example 1: Figure 1 , 3 As shown, a device for assisting detection of abnormal noise and vibration of equipment specially used for machine repair includes a sound transmission tube 1, a sound guide tube 2 and a stethoscope earphone 3. The front end of the sound transmission tube 1 is provided with the probe 5 through a mounting seat 4. The probe 5 is a trumpet-shaped hollow tube, the end in contact with the equipment is a circular arc tip, and the small end is provided with a ball head 9. The probe 5 is rotatably connected to the mounting seat 4. The other end of the mounting seat 4 is provided with a screw hole, and one end of the sound transmission tube 1 is provided with an external thread. The sound transmission tube 1 is screwed into the screw hole of the mounting seat 4 through the external thread. In other words, the angle between the probe 5 and the sound transmission tube 1 can be easily adjusted.
[0019] The specific structure between the probe 5 and the sound transmission tube 1 is: a ball socket interface 8 is provided at one end of the mounting seat 4, and a ball head 9 is provided in the ball socket interface 8. In actual use, when the sound transmission tube 1 and the probe 5 are used to detect the equipment, by changing the angle of the probe 5, the probe 5 can achieve sliding contact with the equipment in different directions, and the arc tip can be in soft contact with the mechanical transmission parts to prevent scratches or damage to the mechanical transmission parts.
[0020] The other end of the sound transmission tube 1 is connected to the sound guide hose 2, and a non-slip hand-held part 6 is provided on the sound transmission tube 1 at the front end of the sound guide hose 2; the upper part of the sound transmission tube 1, near the hand-held part 6, is connected to the sound source amplifier 7. The sound guide hose 2 is a rubber tube, and the end of the sound guide hose 2 away from the sound transmission tube 1 is a three-way structure, and the two interfaces at the upper end are respectively connected to the left channel and the right channel of the stethoscope earphone 3. The stethoscope earphone 3 is an existing head-mounted audio playback earphone, which transmits the sound generated by the abnormal sound to the two ears, so that the judgment of the abnormal sound is clearer, and long-term use will not cause imbalance of the two ears, and it can effectively isolate the external environmental sound to avoid affecting the normal work of the maintenance personnel.
[0021] Example 2: Figure 2 , 3 As shown, the specific implementation is the same as that of Example 1, except that: the sound transmission tube 1 is provided in multiple sections, and two adjacent sections are connected by snaps to form a telescopic structure. Before use, the length of the sound transmission tube 1 can be determined according to the location of the device under test and the on-site environment.
Claims
1. A device for detecting abnormal noise and vibration of equipment specially used for machine repair, comprising a sound transmission tube (1), a sound guide tube (2) and a stethoscope earphone (3), characterized in that: A probe (5) is arranged at the front end of the sound transmission tube (1), and the end of the probe (5) in contact with the device is a rounded tip. The other end of the sound transmission tube (1) is connected to the sound guide hose (2), and a non-slip gripping part (6) is arranged on the sound transmission tube (1) at the front end of the sound guide hose (2). The sound guide hose (2) is a rubber tube, and the end of the sound guide hose (2) away from the sound transmission tube (1) is a three-way structure, and the two interfaces at the upper end are respectively connected to the left channel and the right channel of the stethoscope earphone (3), and the stethoscope earphone (3) is an existing head-mounted audio playback earphone.
2. The device for detecting abnormal noise and vibration of equipment specially used for machine repair according to claim 1, characterized in that: The upper part of the sound transmission tube (1), near the hand-held part (6), is connected to a sound source amplifier (7).
3. The device for detecting abnormal noise and vibration of equipment specially used for machine repair according to claim 1, characterized in that: The sound transmission tube (1) is provided in multiple sections, and two adjacent sections are connected by snap-fits to form a telescopic structure.
4. The device for detecting abnormal noise and vibration of equipment specially used for machine repair according to any one of claims 1 to 3, characterized in that: The probe (5) is arranged at the front end of the sound transmission tube (1) through a mounting seat (4). The probe (5) is a trumpet-shaped hollow tube, the end in contact with the device is a rounded tip, and the small end is provided with a ball head (9). The probe (5) is rotatably connected to the mounting seat (4). The other end of the mounting seat (4) is provided with a screw hole. One end of the sound transmission tube (1) is provided with an external thread, and the sound transmission tube (1) is screwed into the screw hole of the mounting seat (4) through the external thread.
5. The device for detecting abnormal noise and vibration of equipment specially used for machine repair according to claim 4, characterized in that: The specific structure between the probe (5) and the sound transmission tube (1) is as follows: a ball socket interface (8) is provided at one end of the mounting seat (4), and a ball head (9) is arranged in the ball socket interface (8).