Fixing jig for ear-side noise microphone of excavator
By designing a fixed fixture for excavator ear noise microphone, the problems of inaccurate measurement position and poor safety in the prior art are solved, and higher measurement accuracy and safety are achieved.
Patent Information
- Application Number
- CN202421728422.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-22
AI Technical Summary
The existing excavator ear noise measurement method cannot ensure the accuracy of the measurement position, resulting in large errors and poor safety during measurement, which can easily lead to incorrect operation of the operator.
A fixed fixture including a head cover, adjustment assembly and adjustment assembly is designed to ensure that the microphone position meets the test requirements and improve the accuracy of the measurement position by adjusting the position of the sliding pillar and support arm.
Through the use of fixed fixtures, measurement errors are reduced, the reliability of test results is improved, and safety hazards caused by manual handheld measuring instruments are avoided.
Smart Images
Figure CN222978933U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fixing jigs, in particular to a fixing jig for an ear-side noise microphone of an excavator. Background Art
[0002] Noise has a great impact on people's physical and mental health. With the development of the excavator industry, the requirement for comfort is constantly increasing. According to the national standard requirements, after the production and manufacture of an excavator, the ear-side noise needs to be tested, which requires a microphone to collect the noise. There are specific requirements for the placement position of the microphone. The noise sensor should be located 200mm ± 20mm from the middle plane of the driver's head, in line with the eyes, and placed on the left and right sides of the driver's head.
[0003] The existing measurement method is to manually hold a noise measuring instrument and place it beside the driver's ear for measurement. However, the method of manually holding the noise measuring instrument for measurement cannot ensure the accurate measurement position, resulting in errors. Moreover, the cab space of the excavator is small, and the safety during testing is poor, which is likely to cause misoperation by the excavator operator. Content of the Utility Model
[0004] In view of the above problems, the utility model provides a fixing jig for an ear-side noise microphone of an excavator, which ensures the accurate measurement position, reduces the measurement error, and improves the safety during measurement.
[0005] To achieve the above object, the technical solution of the utility model is: a fixing jig for an ear-side noise microphone of an excavator, including a head cover, an adjusting component, and an adjusting component. The adjusting component is fixed on the upper part of the head cover, and the adjusting component and the adjusting component are fixedly connected. The adjusting component includes a fixing piece and a support arm. The middle part of the fixing piece is fixedly connected to the top of the head cover. Both ends of the fixing piece far from the middle part are provided with first sliding tracks. There are 2 support arms. One end of each of the 2 support arms is provided with a second sliding track. The fixing piece and the support arm are connected by a first bolt passing through the first sliding track and the second sliding track, so that the first bolt can slide in the first sliding track and the second sliding track. The adjusting component includes a pillar and a sliding pillar. The pillar is slidably connected to the sliding pillar. The upper end of the pillar is connected to the other end of the support arm, and the lower end of the sliding pillar is provided with a microphone.
[0006] As a further solution of the utility model: the fixing piece is fixedly connected to the head cover by bolts.
[0007] As a further solution of the utility model: a damping pad is provided at the top end inside the head cover, and the damping pad is made of a plastic gasket.
[0008] As a further solution of the present utility model: through holes are provided on both the support column and the sliding support column, the through holes are arranged at equal intervals, threads are provided on the inner sides of the through holes, and second bolts are screwed in the through holes.
[0009] As a further solution of the present utility model: a wire harness fixing clip is provided at the rear side of the outside of the head cover, which can be used to fix the wire harness of the microphone.
[0010] As a further solution of the present utility model: a support platform is provided between the top of the head cover and the fixing piece.
[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0012] 1. By adjusting the positions of the sliding support column and the support arm, the position of the microphone meets the test requirements, ensuring the accurate position of the microphone, avoiding errors caused by inaccurate positions, and improving the reliability of the test results.
[0013] 2. The fixing fixture of the present utility model replaces the way of manually holding the noise measuring instrument for measurement, avoiding potential safety hazards caused by misoperation of the excavator operator. Description of the Drawings
[0014] Figure 1 is the overall structural schematic diagram of the present utility model;
[0015] Figure 2 is the internal structural schematic diagram of the present utility model.
[0016] In the figure: 1. Head cover; 2. Fixing piece; 3. First sliding track; 4. First bolt; 5. Support arm; 6. Second sliding track; 7. Support column; 8. Microphone; 9. Vibration damping pad; 10. Sliding support column; 11. Through hole; 12. Second bolt; 13. Wire harness fixing clip; 14. Support platform. Detailed Embodiments
[0017] Next, the technical solutions in the present embodiment will be clearly and completely described in conjunction with the accompanying drawings in the present embodiment. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0018] In the description of the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0019] In the description of the present utility model, it should be noted that in the embodiments of the present utility model, there are descriptions involving "first", "second", etc. Such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features; all directional indications (such as X, Y, Z) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly.
[0020] Reference Figure 1 and Figure 2 , a fixing jig for a microphone for the ear-side noise of an excavator, comprising a head cover 1, an adjusting component, and an adjusting component. The adjusting component is fixed on the upper part of the head cover 1, and the adjusting component and the adjusting component are fixedly connected; the adjusting component includes a fixing piece 2 and a support arm 5. The middle part of the fixing piece 2 is fixedly connected to the top of the head cover 1. Both ends of the fixing piece 2 far from the middle part are provided with first sliding tracks 3. There are 2 support arms 5. One end of each of the 2 support arms 5 is provided with a second sliding track 6. The fixing piece 2 and the support arm 5 are connected by a first bolt 4 passing through the first sliding track 3 and the second sliding track 6, so that the first bolt 4 can slide in the first sliding track 3 and the second sliding track 6; the adjusting component includes a support column 7 and a sliding support column 10. The support column 7 is slidably connected to the sliding support column 10. The upper end of the support column 7 is connected to the other end of the support arm 5. The lower end of the sliding support column 10 is provided with a microphone 8.
[0021] By adjusting the position of the support arm 5 in the first sliding track 3, the movement of the microphone 8 in the X direction is realized. By adjusting the position of the support arm 5 in the second sliding track 6, the movement of the microphone 8 in the Y direction is realized. The sliding support column 10 slides up and down along the support column 7, so as to realize the movement of the microphone in the Z direction.
[0022] The fixing piece 2 is fixedly connected to the head cover 1 by bolts.
[0023] To avoid direct contact between the upper end of the head and the hood 1 and prevent the bolts fixed on the hood 1 from hitting the head, a shock-absorbing pad 9 is provided at the top inside the hood 1, and the shock-absorbing pad 9 is made of a plastic gasket.
[0024] Through holes 11 are formed in both the support column 7 and the sliding support column 10. The through holes 11 are arranged at equal intervals. Threads are provided inside the through holes 11, and second bolts 12 are screwed into the through holes 11. By adjusting the positions of the second bolts 12, the sliding support column 10 can slide up and down along the support column 7.
[0025] A wire harness fixing clip 13 is provided at the rear side of the outside of the hood 1, which can be used to fix the wire harness of the microphone 8.
[0026] To make the fixing piece 2 more firm, a support platform 14 is provided between the top of the hood 1 and the fixing piece 2.
[0027] Working principle: When the fixing jig for the ear-side noise microphone of the utility model excavator is in use, the hood 1 needs to be fixed on the head first. According to the position requirements of the noise microphone 8 and the ear, the positions of the sliding support column 10 and the support arm 5 are adjusted so that the position of the noise microphone 8 is adjusted in the X, Y, and Z directions. When testing the ear-side noise of the excavator operator during driving, the accuracy of the microphone position is ensured, the error caused by inaccurate position is avoided, and the reliability of the test result is improved. Moreover, the fixing on the headrest bracket can be realized through the adjusting component, replacing the way of manually holding the noise measuring device, and avoiding the safety hazards caused by the manual operation of the excavator operator.
[0028] In addition, the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
Claims
1. A fixture for fixing the noise microphone near the ear of an excavator, characterized in that: It comprises a head cover (1), an adjustment component and an adjustment component, wherein the adjustment component is fixed to the upper part of the head cover (1), and the adjustment component and the adjustment component are fixedly connected; The adjustment assembly comprises a fixing plate (2) and a support arm (5), the middle portion of the fixing plate (2) is fixedly connected to the top of the head cover (1), both ends of the fixing plate (2) away from the middle portion are provided with a first sliding track (3), two supporting arms (5) are provided, one end of each of the two supporting arms (5) is provided with a second sliding track (6), the fixing plate (2) and the support arm (5) are connected via a first bolt (4) passing through the first sliding track (3) and the second sliding track (6), so that the first bolt (4) can slide in the first sliding track (3) and the second sliding track (6); The adjustment assembly comprises a support (7) and a sliding support (10), wherein the support (7) is slidably connected to the sliding support (10), the upper end of the support (7) is connected to the other end of the support arm (5), and the lower end of the sliding support (10) is provided with a microphone (8).
2. The fixing fixture for the ear noise microphone of an excavator according to claim 1 is characterized in that: The fixing plate (2) is fixedly connected to the head cover (1) via bolts.
3. The fixing fixture for the ear-side noise microphone of an excavator according to claim 2 is characterized in that: A vibration-damping pad (9) is provided at the top end of the head cover (1), and the vibration-damping pad (9) is a plastic gasket.
4. The fixing fixture for the ear-side noise microphone of an excavator according to claim 3 is characterized in that: The support pillar (7) and the sliding support pillar (10) are both provided with through holes (11), the through holes (11) are arranged at equal intervals, the inner sides of the through holes (11) are provided with threads, and the second bolts (12) are screwed into the through holes (11).
5. The fixing fixture for the ear noise microphone of an excavator according to claim 4 is characterized in that: A wire harness fixing clip (13) is provided on the rear side of the head cover (1) for fixing the wire harness of the microphone (8).
6. The fixing fixture for the ear-side noise microphone of an excavator according to claim 5 is characterized in that: A support platform (14) is provided between the top of the head cover (1) and the fixing plate (2).