Knocking device for detecting noise of compressor

Abstract

The knocking device for detecting the noise of the compressor comprises a shell, a sliding groove is formed in the shell, one end of the sliding groove penetrates through the shell to form a detection opening, a through hole is formed in the other end, away from the detection opening, of the shell, and the through hole is communicated with the sliding groove; a knocking hammer is further arranged in the shell and located in the sliding groove, one end of the knocking hammer is connected with a handle, the handle penetrates through the through hole and is sleeved with a spring, and the spring is located in the sliding groove. A trigger is arranged on the shell and is used for limiting or releasing the knocking hammer to move; and a vibration sensor is also arranged in the knocking hammer. The knocking hammer is placed in the sliding groove, the handle arranged at one end of the knocking hammer is pulled, the spring arranged on the handle in a sleeving mode is compressed, and the compression amount of the spring every time is fixed, so that the force and the acceleration of knocking the compressor by the knocking hammer are the same; the detection error caused by different knocking force and acceleration during manual knocking is avoided, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the field of compressor detection, in particular to a knocking device for detecting compressor noise. Background Art

[0002] During operation, refrigeration compressors generate noise, which can cause persistent disturbances in the surrounding environment and disrupt people's daily lives and work. Therefore, noise testing during the production process is necessary to prevent substandard compressors from entering the market. Existing compressor testing methods use a manual hammer tapping test, which uses a vibration sensor embedded in the hammer to detect noise. However, this process cannot guarantee consistent force and acceleration at every measurement point, which can easily lead to detection errors. Summary of the Invention

[0003] The purpose of the utility model is to address the problems existing in the prior art and provide a knocking device for detecting compressor noise, thereby avoiding detection errors caused by different knocking forces and accelerations during the compressor noise detection process and improving the accuracy of detection.

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

[0005] A knocking device for detecting compressor noise includes a shell, a slide groove is provided in the shell, one end of the slide groove passes through the shell to form a detection port, and the other end of the shell away from the detection port is provided with a through hole, and the through hole is connected to the slide groove; a knocking hammer is also provided in the shell, and the knocking hammer is located in the slide groove, and one end of the knocking hammer is connected to a handle, and the handle passes through the through hole, and a spring is provided on the handle, and the spring is located in the slide groove; a trigger is provided on the shell, and the trigger is used to limit or release the movement of the knocking hammer; a vibration sensor is also provided in the knocking hammer.

[0006] In the above technical solution, by placing the knocking hammer in the slide groove and pulling the handle provided at one end of the knocking hammer, the spring provided on the handle is compressed, and the spring pushes the knocking hammer to knock on the compressor after the elastic force is released. The compression amount of the spring each time is certain to ensure that the force and acceleration of the knocking hammer knocking on the compressor are the same, thereby avoiding detection errors caused by different knocking forces and accelerations during manual knocking, and improving the accuracy of detection.

[0007] Furthermore, a sleeve is connected to one end of the handle close to the hammer, and the hammer is sleeved with the sleeve. The handle and the hammer are connected by the sleeve, and the end surface of the sleeve can abut against the trigger, so that the compression amount of the spring remains consistent.

[0008] Furthermore, the sleeve is provided with a first connecting hole, through which the sleeve is connected to the striking hammer.

[0009] Furthermore, a handle is provided at one end of the handle, which facilitates pulling the handle.

[0010] Furthermore, a handle is provided on the housing, which facilitates the operation of the striking device.

[0011] Furthermore, a movable opening is provided at the lower portion of the housing. Since the utility model is installed using an existing percussion hammer, which has a hammer handle, the movable opening facilitates the movement of the hammer handle.

[0012] Furthermore, a trigger slot is provided at the lower portion of the housing, the trigger slot being connected to the slide slot, a connecting rod being provided in the trigger slot, the trigger being sleeved on the connecting rod, the trigger being further provided with a torsion spring, and both the trigger and the torsion spring being sleeved on the connecting rod. The torsion spring provided on the trigger enables the trigger to abut against the sleeve and restrict the movement of the sleeve.

[0013] Furthermore, a second connecting hole is provided in the trigger slot, and the connecting rod is located in the second connecting hole, so that the connecting rod can be conveniently placed through the second connecting hole.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By placing the hammer in the slide, pulling the handle set at one end of the hammer, the spring set on the handle is compressed. After the elastic force of the spring is released, the hammer is pushed to knock on the compressor. The compression amount of the spring each time is guaranteed to ensure that the force and acceleration of the hammer hitting the compressor are the same, avoiding the detection error caused by different knocking force and acceleration during manual knocking, and improving the accuracy of detection.

[0016] 2. The handle is connected to the hammer through the sleeve. At the same time, the end face of the sleeve can abut against the trigger, so that the compression amount of the spring remains consistent.

[0017] 3. By setting the movable opening, it is convenient to install the existing percussion hammer, the structure is simple, and the detection cost is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of a knocking device for detecting compressor noise according to the present invention;

[0019] Figure 2 This is a first structural schematic diagram of a knocking device for detecting compressor noise according to the present utility model;

[0020] Figure 3 This is a second structural schematic diagram of a knocking device for detecting compressor noise according to the present invention;

[0021] Figure 4 This is an exploded view of the installation of a knocking hammer of a knocking device for detecting compressor noise in the utility model;

[0022] Figure 5 This is a schematic diagram of another embodiment of a knocking device for detecting compressor noise according to the present invention.

[0023] In the figure: 1. Shell; 2. Hammer; 3. Slide; 4. Handle; 5. Spring; 6. Sleeve; 7. Inspection port; 8. Through hole; 9. Pull handle; 10. Grip; 11. Trigger slot; 12. Movable port; 13. Trigger; 14. Connecting rod; 15. First connecting hole; 16. Second connecting hole. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] The following combination Figures 1 to 5 , through specific embodiments and application scenarios, a knocking device for detecting compressor noise provided by an embodiment of the utility model is described in detail.

[0028] A knocking device for detecting compressor noise includes a shell 1, a slide groove 3 is provided in the shell 1, one end of the slide groove 3 passes through the shell 1 to form a detection port 7, and the other end of the shell 1 away from the detection port 7 is provided with a through hole 8, and the through hole 8 is connected to the slide groove 3; a knocking hammer 2 is also provided in the shell 1, the knocking hammer 2 is located in the slide groove 3, one end of the knocking hammer 2 is connected to a handle 4, the handle 4 passes through the through hole 8, and a spring 5 is provided on the handle 4, and the spring 5 is located in the slide groove 3; a trigger 13 is provided on the shell 1, and the trigger 13 is used to limit or release the movement of the knocking hammer 2; a vibration sensor is also provided in the knocking hammer 2.

[0029] Specifically, such as Figures 1 to 3 As shown, a chute 3 is provided inside the shell 1, and one end of the chute 3 passes through the shell 1 and forms a detection port 7. The detection port 7 is in contact with the compressor to be tested during detection, so that the distance between the end of the knocking hammer and the measuring point is consistent during each detection, thereby reducing the detection error. A through hole 8 is provided on the end of the shell 1 away from the detection port 7, and the through hole 8 is connected to the chute 3. A knocking hammer 2 is provided in the chute 3, and a handle 4 is connected to the end of the knocking hammer 2 away from the detection port 7. The handle 4 and the knocking hammer 2 are connected by a sleeve 6, so that the knocking hammer 2 can move with the handle 4, and the handle 4 extends to the outside of the shell 1 through the through hole 8. A spring 5 is also sleeved on the handle 4, and the spring 5 is located in the chute 3. When the knocking hammer 2 moves in the direction close to the through hole 8, the spring 5 is compressed and begins to store energy. A trigger 13 is provided at the lower part of the housing 1, and a hook is provided at the end of the trigger 13. When the hook of the trigger 13 abuts against the end face of the sleeve 6, the movement of the knocking hammer 2 can be limited, so that the compression amount of the spring 5 is consistent each time. When the trigger 13 is rotated to release the hook from the knocking hammer 2, the knocking hammer 2 moves under the action of the elastic force of the spring 5 and knocks the compressor to be tested through the detection port 7. A vibration sensor is provided inside the knocking hammer 2, and the vibration sensor is connected to an external computer. After the knocking hammer 2 knocks the compressor to be tested, the detected noise is reflected on the external computer through the vibration sensor. Detecting noise through the knocking device of the utility model can ensure that the force and acceleration of each measuring point of the knocking compressor are the same, avoiding the detection error caused by different knocking force and acceleration during manual knocking, and improving the accuracy of detection.

[0030] Furthermore, if Figure 1 and Figure 4 As shown, the end of the handle 4 near the percussion hammer 2 is connected to the sleeve 6, which is threadedly connected to the handle 4 for easy installation and removal. The percussion hammer 2 is sleeved with the sleeve 6, and a first connecting hole 15 is provided on the sleeve 6. After the percussion hammer 2 is inserted into the sleeve 6, a tightening bolt can be installed at the first connecting hole 15 to connect the sleeve 6 and the percussion hammer 2. Alternatively, the sleeve 6 and the percussion hammer 2 can be welded at the first connecting hole 15, so that the handle 4 can drive the percussion hammer 2 to move through the sleeve 6.

[0031] Furthermore, if Figure 1 and Figure 4 As shown, the sleeve 6 is provided with two first connecting holes 15 at the upper and lower parts. The sleeve 6 and the percussion hammer 2 can be connected by installing tightening bolts through the first connecting holes 15 , or the percussion hammer 2 and the sleeve 6 can be welded at the first connecting holes 15 .

[0032] Furthermore, if Figure 1 and Figure 4 As shown, a pull handle 9 is provided at one end of the handle 4, and the pull handle 9 is threadedly connected to the end of the handle 4. The pull handle 9 facilitates pulling the handle 4, thereby improving the convenience of operation of the utility model.

[0033] Furthermore, if Figure 2 As shown, the shell 1 is in the shape of a pistol as a whole, and a handle 10 is provided on the shell 1. The handle 10 is used to facilitate the operation of the knocking device during detection.

[0034] In some embodiments, as Figure 5 As shown, the hammer 2 is without a hammer handle, and the hammer 2 is entirely located in the chute 3. In this embodiment, Figure 4 As shown, the striking hammer 2 has a hammer handle, and a movable opening 12 needs to be provided at the lower portion of the housing 1 for the hammer handle to move.

[0035] Furthermore, if Figure 1 and Figure 3 As shown, a movable opening 12 is provided at the lower portion of the shell 1. Since the striking device is designed using an existing striking hammer, the detection cost can be saved. The existing striking hammer 2 has a hammer handle, and the movable opening 12 provides a moving space for the hammer handle of the striking hammer 2.

[0036] Furthermore, if Figure 1 As shown, a trigger slot 11 is provided at the lower portion of the housing 1. The trigger slot 11 is connected to the slide slot 3. A connecting rod 14 is provided in the trigger slot 11. A trigger 13 is mounted on the connecting rod 14. A torsion spring is also provided on the trigger 13. The trigger 13 and the torsion spring are both mounted on the connecting rod 14, so that the trigger 13 can rotate around the connecting rod 14 and then automatically reset. A hook is provided at the end of the trigger 13 to abut against the end surface of the sleeve 6, thereby limiting the movement of the striking hammer 2.

[0037] Furthermore, if Figure 3 As shown, a second connecting hole 16 is provided in the trigger slot 11, and the connecting rod 14 is located in the second connecting hole 16. The second connecting hole 16 passes through the trigger slot 11. After the trigger 13 is placed in the trigger slot 11, the connecting rod 14 is installed to the trigger slot 11 through the second connecting hole 16.

[0038] It should be noted that when using the knocking device of the present invention, first turn the trigger 13 and pull the handle 4 to the limit through the pull handle 9, then release the trigger 13 and release the pull handle 9, and the knocking hammer 2 moves under the action of the elastic force of the spring 5 until the trigger 13 abuts the end face of the sleeve 6 to limit the movement of the knocking hammer 2. At this time, the spring 5 is still in a compressed state. After the detection port 7 is abutted with the measuring point of the compressor to be tested, turn the trigger 13 again. The knocking hammer 2 knocks the compressor under the action of the elastic force of the spring 5. The vibration sensor set in the knocking hammer 2 displays the noise of the measuring point through the externally connected computer, and then other measuring points are replaced for detection. The measured noise is compared with the standard value. If it meets the standard requirements, the noise detection of the compressor is qualified and the detection is completed.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A knocking device for detecting compressor noise, characterized in that: The invention comprises a shell (1), wherein a slide groove (3) is provided in the shell (1), one end of the slide groove (3) passes through the shell (1) to form a detection port (7), and the other end of the shell (1) away from the detection port (7) is provided with a through hole (8), and the through hole (8) is communicated with the slide groove (3); a knock hammer (2) is also provided in the shell (1), and the knock hammer (2) is located in the slide groove (3), and one end of the knock hammer (2) is connected to a handle (4), and the handle (4) passes through the through hole (8), and a spring (5) is provided on the handle (4), and the spring (5) is located in the slide groove (3); a trigger (13) is provided on the shell (1), and the trigger (13) is used to limit or release the movement of the knock hammer (2); a vibration sensor is also provided in the knock hammer (2).

2. A knocking device for detecting compressor noise according to claim 1, characterized in that: One end of the handle (4) close to the striking hammer (2) is connected to a sleeve (6), and the striking hammer (2) is sleeved with the sleeve (6).

3. A knocking device for detecting compressor noise according to claim 2, characterized in that: The sleeve (6) is provided with a first connecting hole (15).

4. A knocking device for detecting compressor noise according to claim 1, characterized in that: A pull handle (9) is provided at one end of the handle (4).

5. The knocking device for detecting compressor noise according to claim 1, characterized in that: A handle (10) is provided on the housing (1).

6. The knocking device for detecting compressor noise according to claim 1, characterized in that: A movable opening (12) is provided at the lower portion of the housing (1).

7. The knocking device for detecting compressor noise according to claim 1, characterized in that: A trigger slot (11) is provided at the lower portion of the housing (1), the trigger slot (11) being connected to the slide slot (3), a connecting rod (14) being provided in the trigger slot (11), a torsion spring (5) being provided on the trigger (13), and both the trigger (13) and the torsion spring (5) being sleeved on the connecting rod (14).

8. The knocking device for detecting compressor noise according to claim 7, characterized in that: A second connecting hole (16) is provided in the trigger slot (11), and the connecting rod (14) is located in the second connecting hole (16).

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