Balance shaft noise detection device

Abstract

The utility model provides a balance shaft noise detection device, and belongs to the technical field of mechanical tests. The balance shaft noise detection device comprises a test assembly and a fixed assembly, the fixed assembly is divided into a wind breaking part and a movable part, the test assembly is arranged in the fixed assembly, and the test assembly is divided into two test paths of an exterior line and an interior line to synchronously test noise of a balance shaft in a front cover and noise in a carriage. The fixing assembly is used for installing and fixing the device outside the vehicle during motion testing. According to the utility model, noise monitoring analysis can be simultaneously carried out near an engine balance shaft in a front cover and in a carriage, the front cover and a vehicle door are sealed under extrusion protection of vehicle exterior lines and vehicle interior lines, internal noise dissipation and external interference are prevented, external protection can be carried out on a test instrument, and the test efficiency is improved. And the device can be conveniently protected and fixed in an outdoor test state.

Description

Technical Field

[0001] This utility model relates to the field of mechanical testing technology, specifically to a balance shaft noise detection device. Background Technology

[0002] Balance shaft technology was originally developed to address the vibration problems generated during the operation of internal combustion engines. During engine operation, the reciprocating motion of the piston generates significant inertial forces, causing overall engine vibration. This vibration not only affects engine performance and lifespan but is also transmitted to the entire vehicle through the transmission system, impacting passenger comfort.

[0003] Existing balance shaft noise detection devices mostly use indoor brackets to place the monitoring microphone near the engine for idling detection. The external testing space weakens the actual noise effect due to diffuse reflection, and creating a sealed environment can cause damage to the wiring due to direct pressure from the hood, windows, and doors. Furthermore, driving tests are mostly conducted on indoor walking devices, which differ from actual road driving, and the devices are inconvenient to carry. Therefore, this application provides a balance shaft noise detection device. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a noise monitoring and analysis device that can simultaneously monitor and analyze noise near the engine balance shaft inside the hood and inside the vehicle compartment. At the same time, the hood and doors are sealed by squeezing and protecting the external and internal wiring to prevent internal noise from escaping and external interference. It can provide external protection for the testing instruments and facilitate device protection and fixation during outdoor testing.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A balance shaft noise detection device includes a testing component and a fixing component. The fixing component is divided into a wind-breaking part and a moving part. The testing component is located inside the fixing component. The testing component has two test paths, an external line and an internal line, to simultaneously test the balance shaft noise inside the hood and the noise inside the passenger compartment. The fixing component is used to install and fix the device to the outside of the vehicle during motion testing.

[0007] Furthermore, the test assembly includes a test terminal, an external vehicle wire, an internal vehicle wire, and a pressure-relieving pad. The external vehicle wire is movably connected to a magnetic base, and a data collector A is fixedly connected to the end of the external vehicle wire. A data collector B is fixedly connected to the end of the internal vehicle wire.

[0008] Furthermore, the test terminal is provided with connection terminals on both sides, and the external vehicle wire and the internal vehicle wire are detached and connected to the connection terminals respectively.

[0009] Furthermore, the external wiring and the internal wiring are both movably connected by pressure-relieving pads, and the pressure-relieving pads are wrapped with rubber rings. The pressure-relieving pads are used to relieve the pressure of the hood and doors and windows on the external wiring and the internal wiring, and the rubber rings are used to evenly distribute the pressure on the surface of the pressure-relieving pads.

[0010] Furthermore, the external and internal wiring harnesses are generally rigid and their shapes can be modified according to actual needs.

[0011] Furthermore, the air-breaking section and the movable section are connected by a receiving cavity to store the test terminal. A connecting arc plate is fixedly connected to the outside of the movable section. The connecting arc plate connects the air-breaking section and the movable section to form a push-pull structure. Fixing rings are provided on the outside of both the air-breaking section and the movable section. The fixing rings are combined to form a ring to lock and fix the external wires and internal wires of the vehicle.

[0012] Furthermore, both the air-breaking part and the bottom of the movable part are provided with embedded grooves. A grooved suction cup is fixedly connected to the outside of the embedded groove. There are multiple sets of grooved suction cups evenly distributed outside the embedded groove. An adjustment column is movably connected inside the grooved suction cup. A snap-fit ​​groove is provided on the outside of the movable part.

[0013] Furthermore, the adjusting columns are distributed on both sides along the axial direction of the air-breaking part and the moving part and are connected to each other to form a whole. The adjusting column is provided with an air release groove in the part inside the grooved suction cup. An adjusting handle is fixedly connected to the tail end of the adjusting column. The adjusting column is fitted and connected to the snap-fit ​​groove.

[0014] This utility model has the following beneficial effects:

[0015] 1. By setting up test components, the device can simultaneously monitor and analyze noise near the engine balance shaft inside the hood and inside the vehicle compartment. At the same time, the hood and doors are sealed with pressure-reducing pads to protect external and internal wiring, ensuring a sealed test environment and preventing internal noise from escaping and external interference.

[0016] 2. By setting up fixing components, the device can provide external protection for the testing instrument and facilitate device protection and fixation during outdoor testing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall appearance of this utility model;

[0018] Figure 2 This is a utility model Figure 1 Internal structure diagram;

[0019] Figure 3 This is a schematic diagram of the overall structure of the test component of this utility model;

[0020] Figure 4 This is a utility model Figure 2 Another perspective view.

[0021] The components include: 1. Test components; 101. Test terminal; 102. Connection end; 103. External wiring harness; 104. Magnetic base; 105. Data collector A; 106. Internal wiring harness; 107. Data collector B; 108. Pressure cushion; 109. Rubber ring; 2. Fixing components; 201. Air-breaking section; 202. Moving section; 203. Receiving cavity; 204. Fixing ring; 205. Embedded groove; 206. Connecting arc plate; 207. Grooved suction cup; 208. Adjustment column; 209. Air release groove; 210. Adjustment handle; 211. Snap-fit ​​groove. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Example 1

[0024] Please see Figures 1 to 4 As shown, the present invention provides a balance shaft noise detection device, including a test component 1 and a fixing component 2. The fixing component 2 is divided into two parts: a wind-breaking part 201 and a moving part 202. The test component 1 is set inside the fixing component 2. The test component 1 is divided into two test paths: an external line 103 and an internal line 106, which simultaneously test the balance shaft noise inside the front cover and the noise inside the vehicle compartment. The fixing component 2 is used to install and fix the device on the outside of the vehicle during motion testing.

[0025] Specifically, when monitoring balance shaft noise, the data acquisition unit A105 is first inserted near the engine balance shaft, and then magnetically attached to the outside of the iron fixing part via the magnetic base 104, thus initially fixing the front end of the external wiring harness 103. Next, the pressure-reducing pad 108 is placed over the hood closure gap of the external wiring harness 103. After calibration, the hood is closed, pressing firmly against the pressure-reducing pad 108. During this process, the rubber ring 109 evenly distributes pressure on the outside of the pressure-reducing pad 108 to prevent damage to the external wiring harness 103. The remaining external wiring harness 103 is then connected to the test terminal 101 after being bent to fit the body. The above operation is repeated to connect the data acquisition unit B105. 107 is fixed inside the vehicle compartment and aligned with the driver's seat. During static monitoring, the test terminal 101 is placed inside the fixed assembly 2. Then, the air-breaking part 201 and the moving part 202 are connected by the connecting arc plate 206 to form a streamlined whole. Hold the adjustment handle 210 to drive the air venting groove 209 outside the adjustment column 208 to align with the center groove of the grooved suction cup 207. Then, the fixed assembly 2 is placed on any flat surface of the vehicle. At this time, the air-breaking part 201 faces the same direction as the vehicle. Push the adjustment column 208 again to make the air venting groove 209 disengage from the grooved suction cup 207 and seal the inside of the grooved suction cup 207 to form a negative pressure suction cup, thus completing the fixation of the device.

[0026] Example 2

[0027] Please see Figures 1 to 4 As shown in Example 1, the test component 1 includes a test terminal 101, an external wire 103, an internal wire 106, and a pressure-relieving pad 108. The external wire 103 is movably connected to a magnetic base 104. A collector A105 is fixedly connected to the end of the external wire 103, and a collector B107 is fixedly connected to the end of the internal wire 106. Connecting ends 102 are provided on both sides of the test terminal 101. The external wire 103 and the internal wire 106 are detachably connected to the connecting ends 102 respectively. The external wire 103 and the internal wire 106 are both movably connected to the pressure-relieving pad 108. The pressure-relieving pad 108 is wrapped with a rubber ring 109. The pressure-relieving pad 108 is used to relieve the pressure of the front cover and the door windows on the external wire 103 and the internal wire 106. The rubber ring 109 is used to evenly distribute the pressure on the surface of the pressure-relieving pad 108. The external wire 103 and the internal wire 106 are relatively rigid and their shape can be changed according to actual needs.

[0028] By making the above settings, when performing static monitoring, the test terminal 101 does not need to be stored and protected. If preliminary monitoring is performed, the device has low requirements for the test environment, and there is no need to create a closed environment. At this time, the data collector A105 and data collector B107 are placed near the engine and inside the vehicle respectively. Then, by bending the external wire 103 and the internal wire 106 to form a support, the device can stand upright, and the operator can observe the data through the test terminal 101.

[0029] Example 3

[0030] Please see Figures 1 to 4 As shown in Embodiment 2, the air-breaking section 201 and the movable section 202 store the test terminal 101 through the receiving cavity 203. A connecting arc plate 206 is fixedly connected to the outside of the movable section 202, connecting the air-breaking section 201 and the movable section 202 to form a push-pull structure. Both the air-breaking section 201 and the movable section 202 have fixing rings 204 on their exteriors, which interlock to form a ring, locking and fixing the external wiring 103 and the internal wiring 106. Both the air-breaking section 201 and the movable section 202 have embedded grooves 205 at their bottoms. The grooved suction cup 207 is fixedly connected to the outside of the groove 205. There are multiple sets of grooved suction cups 207, which are evenly distributed on the outside of the groove 205. The grooved suction cup 207 is movably connected to the inside of the grooved suction cup 207. The movable part 202 has a snap-fit ​​groove 211 on the outside. The adjustment column 208 is distributed on both sides along the axial direction of the air-breaking part 201 and the movable part 202 and is connected to each other as a whole. The part of the adjustment column 208 located inside the grooved suction cup 207 has an air release groove 209. The tail end of the adjustment column 208 is fixedly connected to the adjustment handle 210. The adjustment column 208 is fitted and connected to the snap-fit ​​groove 211.

[0031] By making the above settings, when adjusting the installation position of the fixing component 2, hold the adjustment handle 210 to drive the adjustment column 208 to move in the opposite direction of the movable part 202, so that the air vent 209 is aligned with the center slot of the grooved suction cup 207. At this time, a channel is formed between the two, allowing air to rush in and disrupting the internal negative pressure environment, reducing the suction force of the grooved suction cup 207 on the vehicle. After adjusting the position, repeat Embodiment 1 to fix the fixing component 2 again.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A balance shaft noise detection device, comprising a testing component (1) and a fixing component (2), characterized in that, The fixed component (2) is divided into two parts: a wind-breaking part (201) and a moving part (202). The test component (1) is set inside the fixed component (2). The test component (1) is divided into two test paths: an external line (103) and an internal line (106), which simultaneously test the noise of the balance shaft inside the front cover and the noise inside the car. The fixed component (2) is used to install and fix the device on the outside of the vehicle when performing motion tests.

2. The balance shaft noise detection device according to claim 1, characterized in that, The test component (1) includes a test terminal (101), an external wire (103), an internal wire (106), and a pressure-relieving pad (108). The external wire (103) is movably connected to a magnetic base (104). A collector A (105) is fixedly connected to the end of the external wire (103), and a collector B (107) is fixedly connected to the end of the internal wire (106).

3. The balance shaft noise detection device according to claim 2, characterized in that, The test terminal (101) is provided with connection terminals (102) on both sides, and the external wire (103) and the internal wire (106) are respectively detached and connected to the connection terminals (102).

4. The balance shaft noise detection device according to claim 1, characterized in that, The external wiring (103) and the internal wiring (106) are movably connected by a pressure-relieving pad (108). The pressure-relieving pad (108) is wrapped with a rubber ring (109). The pressure-relieving pad (108) is used to relieve the pressure of the hood and doors and windows on the external wiring (103) and the internal wiring (106). The rubber ring (109) is used to evenly distribute the pressure on the surface of the pressure-relieving pad (108).

5. The balance shaft noise detection device according to claim 1, characterized in that, The external wiring (103) and the internal wiring (106) are relatively rigid and their shapes can be changed according to actual needs.

6. The balance shaft noise detection device according to claim 2, characterized in that, The air-breaking section (201) and the movable section (202) store the test terminal (101) through the receiving cavity (203). The movable section (202) is fixedly connected to the outside of a connecting arc plate (206). The connecting arc plate (206) connects the air-breaking section (201) and the movable section (202) to form a push-pull structure. The air-breaking section (201) and the movable section (202) are both provided with fixing rings (204). The fixing rings (204) are combined to form a ring to lock and fix the external wire (103) and the internal wire (106).

7. The balance shaft noise detection device according to claim 1, characterized in that, Both the air-breaking part (201) and the movable part (202) have an embedded groove (205) at their bottom. A grooved suction cup (207) is fixedly connected to the outside of the embedded groove (205). There are multiple sets of grooved suction cups (207) evenly distributed outside the embedded groove (205). An adjusting column (208) is movably connected inside the grooved suction cup (207). A snap-fit ​​groove (211) is opened on the outside of the movable part (202).

8. The balance shaft noise detection device according to claim 7, characterized in that, The adjusting column (208) is distributed on both sides along the axial direction of the air-breaking part (201) and the movable part (202) and is connected to each other as a whole. The adjusting column (208) is located inside the grooved suction cup (207) and has an air release groove (209). The tail end of the adjusting column (208) is fixedly connected to an adjusting handle (210). The adjusting column (208) is fitted and connected to the snap-fit ​​groove (211).

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