Lifting device for sound insulation performance test tool of vehicle component
By employing a hoisting device with a mounting frame and a winding rope drive assembly in the sound insulation performance testing of vehicle components, the problems of hoisting instability and collision risk were solved, achieving a stable and safe hoisting process and a simplified structural design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO TUOPU GROUP CO LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-21
AI Technical Summary
In existing technologies, the hoisting device is unstable and prone to shaking during the sound insulation performance test of vehicle components, posing a risk to the test personnel, and its complex structure makes it inconvenient to maintain.
A hoisting device for testing the sound insulation performance of vehicle components is adopted. It utilizes a mounting frame, a winding rope, and a drive assembly, and is connected to the test fixture through four independent hoisting mechanisms to ensure the stability of the hoisting process. The test fixture is also wrapped in a accommodating cavity to avoid collisions.
It achieves stability and safety in the hoisting process, simplifies the structure, reduces maintenance difficulty, and improves the safety and convenience of the hoisting process.
Smart Images
Figure CN224147518U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hoisting equipment technology, and more specifically, to a hoisting device for testing the sound insulation performance of vehicle components. Background Technology
[0002] With the development of automotive technology, consumers have increasingly higher demands for the sensory quality of automobiles. Passengers have higher requirements for driving comfort, especially in the area of NVH (Noise, Vibration, and Harshness). NVH represents the overall performance of various indicators such as vehicle noise, vibration, and acoustic roughness. Most passengers expect to enjoy in-car voice communication and audio entertainment systems while driving, therefore, they pay more attention to vehicle noise levels when purchasing a car. Thus, NVH performance testing at the factory is particularly important. Since the vehicle body is large and directly encloses the passenger compartment, NVH performance testing of the vehicle body is of paramount importance.
[0003] The component sound insulation testing fixture is made by cutting the required parts from the vehicle body-in-white according to the laboratory's fixed dimensions. It is typically placed on the corresponding sound insulation window to test the sound insulation performance of the components. Since both the body-in-white and the processing materials are steel, they are usually quite heavy. Therefore, how to move the testing fixture smoothly during testing is a crucial issue.
[0004] In related technologies, a test chamber with a soundproof function is usually required, and an installation chamber is set up below the test chamber. Testers need to fix the corresponding test pieces to the corresponding test fixtures in the installation chamber. The test chamber and the installation chamber are set up on two floors, and a window is opened at the bottom of the test chamber to connect to the installation chamber. A corresponding overhead crane is set up in the test chamber, and a hoist is slidably connected to the crossbeam of the overhead crane. During hoisting, lifting ropes are connected to the four lifting points of the test piece fixture. The four lifting ropes converge on the hook of the hoist. The hoist moves to lift the test fixture containing the test piece in the installation chamber through the window to the test chamber, then slides along the crossbeam to the test point, and finally lowers the test fixture to the ground of the test chamber.
[0005] The above-mentioned structure, which uses a combination of overhead crane and hoist, requires a dedicated overhead crane frame to be set up in the test room. When the hoist lifts the test fixture and moves it horizontally in the test room, it is prone to swaying due to its height and the fact that the four lifting points eventually converge at one suspension point. Therefore, it is necessary to have the test personnel hold it during the movement, and there is also a risk of hitting the test personnel. Summary of the Invention
[0006] To overcome at least one of the defects in the prior art, this utility model provides a hoisting device for testing the sound insulation performance of vehicle components. It has a simple structure, stable hoisting, and will not collide with the test personnel during movement, thus ensuring high safety.
[0007] The present invention provides a hoisting device for testing the sound insulation performance of vehicle components, applied in an NVH testing chamber. It is used to hoist testing fixtures from a lower mounting chamber to the NVH testing chamber. The device includes a mounting frame with a cavity at its lower end for accommodating the testing fixture. The cavity contains four connectors for connecting to four hoisting points on the testing fixture, four winding ropes, and a drive assembly for extending and retracting the four winding ropes. The free ends of the four winding ropes are respectively connected to the four connectors. The lower end of the mounting frame is also connected to four rollers arranged in two rows, with each row of rollers engaging with a track on the bottom surface of the testing chamber.
[0008] Compared with the prior art, the hoisting device for testing the sound insulation performance of vehicle components according to this utility model has the following advantages:
[0009] This utility model discloses a specialized hoisting device for testing the sound insulation performance of vehicle components. When hoisting the test fixture, the entire mounting frame is first pushed along the track to the corresponding window position. The drive assembly extends four winding ropes until the four corresponding connectors descend into the mounting chamber below the test chamber. The test personnel connect the four connectors to the four pre-set hoisting points on the test fixture. Then, the drive assembly resets and retracts the four winding ropes, slowly hoisting the entire test fixture into the test chamber. The entire test fixture is then housed in the receiving cavity of the mounting frame. The test personnel then push the mounting frame to the designated test point and lower the test fixture to complete the NVH test. This structure utilizes four independent hoisting mechanisms connected to the test fixture, ensuring stability during hoisting and preventing tilting. Furthermore, when moving within the test chamber, the sharp edges of the test fixture are contained within the receiving cavity, preventing contact with the test personnel and providing better safety. The hoisting and moving functions are integrated into the mounting frame, simplifying the entire hoisting structure and making maintenance more convenient.
[0010] Furthermore, the drive assembly includes four winding drums, a drive motor for driving the four winding drums to rotate, and the ends of the four winding ropes away from the connector are respectively wound around the four winding drums; the mounting bracket is provided with a control switch for controlling the start and stop of the drive motor.
[0011] As an improvement, counterweights are connected to each of the four winding ropes near the respective connectors.
[0012] In a further improvement, the drive motor is a dual-output-shaft motor. The two output shafts of the drive motor are symmetrically arranged along the width direction of the mounting frame, and two take-up drums are respectively mounted and fixed on the two output shafts. The four take-up ropes are divided into two groups that are spaced apart along the width direction of the mounting frame, and the two take-up ropes in each group are staggered along the width direction of the mounting frame. The two take-up ropes in each group are respectively wound around the two take-up drums on the corresponding output shafts.
[0013] In a further improvement, the mounting frame is connected to four guide pulleys, each corresponding to a connector, and the free ends of the four winding ropes pass over each guide pulley and connect to the corresponding connector.
[0014] In a further improvement, the mounting bracket includes a rectangular frame assembled from multiple square tubes, the inner cavity of which forms the receiving cavity; the upper end of the rectangular frame is connected to a first fixing plate, a second fixing plate, and a third fixing plate that extend along its width direction and are arranged sequentially along its length direction; the drive motor is connected to the first fixing plate; and the four guide pulleys are divided into two sets that are staggered along the width direction of the mounting bracket, with the two sets of guide pulleys respectively connected to the two ends of the second fixing plate and the third fixing plate.
[0015] In a further improvement, the mounting bracket is connected to two bearings symmetrically arranged along its width direction, and the ends of the two output shafts away from the drive motor are respectively fitted into the two bearings.
[0016] The aforementioned improvements and advantages of this invention will be set forth in detail in the following specific embodiments, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures particularly pointed out in the description and drawings. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the hoisting device for testing the sound insulation performance of vehicle components according to this utility model;
[0018] Figure 2 This is a three-dimensional structural view of the hoisting device for testing the sound insulation performance of vehicle components according to this utility model.
[0019] Explanation of reference numerals in the attached figures:
[0020] 1. Mounting frame; 2. Connector; 3. Winding rope; 4. Roller; 5. Winding drum; 6. Drive motor; 7. Control switch; 8. Counterweight; 9. Guide pulley; 10. First fixing plate; 11. Second fixing plate; 12. Third fixing plate; Detailed Implementation
[0021] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.
[0022] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "fixed" and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0023] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0024] See Figures 1-2 As shown in the illustration, this application discloses a hoisting device for testing the sound insulation performance of vehicle components, applied in an NVH testing chamber. It is used to hoist testing fixtures from a lower mounting chamber into the testing chamber. It includes a rectangular mounting frame 1 with a receiving cavity at its lower end for accommodating the testing fixture. The receiving cavity contains four connectors 2 for connecting to four hoisting points on the testing fixture, four winding ropes 3, and a drive assembly for extending and retracting the four winding ropes 3. The free ends of the four winding ropes 3 are respectively connected to the four connectors 2. The lower end of the mounting frame 1 is also connected to four rollers 4 arranged in two rows, with each row of rollers 4 engaging with a track on the bottom surface of the testing chamber. The two rows of rollers 4 provide a guiding and limiting function for the mounting frame 1 during use, preventing it from deviating from its intended position.
[0025] In the above structure, when hoisting the test fixture, the entire mounting frame 1 is first pushed along the track to the corresponding window position. The drive component then extends the four winding ropes 3 until the four corresponding connectors 2 descend into the mounting chamber below the test chamber. The test personnel connect the four connectors 2 to the four preset hoisting points on the test fixture. Then, the drive component resets and retracts the four winding ropes 3, slowly hoisting the entire test fixture into the test chamber. The entire test fixture is then stored in the receiving cavity of the mounting frame 1. The test personnel then push the mounting frame 1 to the set test point and lower the test fixture to complete the NVH test. This structure utilizes four independent hoisting mechanisms connected to the test fixture to ensure the stability of the hoisting process, preventing tilting. Furthermore, when moving within the test chamber, the sharp edges of the test fixture are contained within the receiving cavity and will not touch the test personnel, providing better safety performance. The hoisting and moving functions are integrated into the mounting frame 1, simplifying the entire hoisting structure and making maintenance more convenient.
[0026] In this embodiment, as a preferred structural form, the drive assembly includes four winding drums 5 and a drive motor 6 for driving the four winding drums 5 to rotate. The ends of the four winding ropes 3 away from the connectors 2 are respectively wound around the four winding drums 5. The mounting frame 1 is provided with a control switch 7 for controlling the start and stop of the drive motor 6. Specifically, the control switch 7 includes three buttons for controlling the forward rotation, reverse rotation, and stop of the drive motor 6, respectively. The tester can control the descent, ascent, and stop of the connectors 2 by using the corresponding buttons, which is very convenient. In addition, the winding ropes 3 are all steel wire ropes, which are prone to curling. Therefore, counterweights 8 are connected to each of the four winding ropes 3 near each connector 2 to ensure that the winding ropes 3 will not curl automatically when not in a lifting state, so that each connector 2 can be quickly connected to the corresponding lifting point on the test fixture during the next lifting.
[0027] Preferably, the drive motor 6 is a dual-output shaft motor with a built-in gearbox. The two output shafts of the drive motor 6 are symmetrically arranged along the width direction of the mounting frame 1, and two take-up drums 5 are respectively mounted and fixed on the two output shafts. The four take-up ropes 3 are divided into two groups spaced apart along the width direction of the mounting frame 1, and the two take-up ropes 3 in each group are staggered along the width direction of the mounting frame 1. The two take-up ropes 3 in each group are respectively wound around the two take-up drums 5 on the corresponding output shaft. That is, the drive motor 6 drives the four take-up drums 5 to rotate synchronously in both directions through the two output shafts, realizing the synchronous lifting and lowering of the four connecting parts 2. More specifically, in this structure, two bearings are connected to the mounting frame 1 symmetrically arranged along its width direction. The ends of the two output shafts away from the drive motor 6 are respectively engaged in the two bearings, thereby ensuring the stability of the two output shafts during operation; at the same time, it can also provide axial limit for the corresponding take-up drum 5 on each output shaft.
[0028] In this embodiment, all four connectors 2 are conventional hooks. Furthermore, a locking element can be provided at the opening of the hook to ensure stability when connected to the test fixture.
[0029] In some other embodiments, the connector 2 may also be a U-shaped buckle.
[0030] In this embodiment, four guide pulleys 9, each corresponding to a connector 2, are connected inside the mounting frame 1. The free ends of the four winding ropes 3 pass around the guide pulleys 9 and are connected to the corresponding connectors 2. The guide pulleys 9 make the lifting and lowering of the four winding ropes 3 test fixture more stable and reliable.
[0031] In addition, the mounting frame 1 involved in this embodiment includes a rectangular frame assembled from multiple square tubes, which has a simple structure and low cost; and the inner cavity of the rectangular frame forms an accommodating cavity; the upper end of the rectangular frame is connected to a first fixing plate 10, a second fixing plate 11 and a third fixing plate 12 that extend along its width direction and are arranged sequentially along its length direction. The drive motor 6 is connected to the first fixing plate 10, and the four guide pulleys 9 are divided into two groups that are staggered along the width direction of the mounting frame 1. The two groups of guide pulleys 9 are respectively connected to the two ends of the second fixing plate 11 and the third fixing plate 12 through the corresponding mounting frames 1. In this structure, the setting of three fixing plates makes the connection of the drive motor 6 and the four guide pulleys 9 more convenient, and better ensures the structural strength of the entire hoisting mechanism.
[0032] In the description of this application, the references to terms such as "this embodiment," "some embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0033] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A hoisting device for testing the sound insulation performance of vehicle components, applied in an NVH testing chamber, for hoisting the testing fixture from the lower installation chamber to the NVH testing chamber, characterized in that: The device includes a mounting frame (1), the lower end of which has a cavity for accommodating the test fixture. The cavity contains four connectors (2) for connecting to four lifting points on the test fixture, four winding ropes (3), and a drive assembly for driving the four winding ropes (3) to extend and retract. The free ends of the four winding ropes (3) are respectively connected to the four connectors (2). The lower end of the mounting frame (1) is also connected to four rollers (4) arranged in two rows, and the two rows of rollers (4) are respectively matched with the track on the bottom surface of the test chamber.
2. The vehicle component sound isolation performance test tool hoist apparatus of claim 1, wherein: The drive assembly includes four take-up drums (5) and a drive motor (6) for driving the four take-up drums (5) to rotate. The ends of the four take-up ropes (3) away from the connector (2) are respectively wound around the four take-up drums (5). The mounting frame (1) is provided with a control switch (7) for controlling the start and stop of the drive motor (6).
3. The vehicle component sound isolation performance test tooling hoist apparatus of claim 2, wherein: Each of the four winding ropes (3) has a counterweight (8) attached near each of the connectors (2).
4. The hoisting device for testing the sound insulation performance of vehicle components according to claim 2, characterized in that: The drive motor (6) is a dual-output shaft motor. The two output shafts of the drive motor (6) are symmetrically arranged along the width direction of the mounting frame (1), and two take-up drums (5) are respectively mounted on the two output shafts. The four take-up ropes (3) are divided into two groups that are spaced apart along the width direction of the mounting frame (1), and the two take-up ropes (3) in each group are staggered along the width direction of the mounting frame (1). The two take-up ropes (3) in each group are respectively wound on the two take-up drums (5) on the corresponding output shafts.
5. The vehicle component sound isolation performance test tooling hoist apparatus of claim 4, wherein: The mounting bracket (1) is connected to four guide pulleys (9) that correspond to each connector (2). The free ends of the four winding ropes (3) pass around each guide pulley (9) and are connected to the corresponding connector (2).
6. The vehicle component sound isolation performance test tooling hoist apparatus of claim 5, wherein: The mounting frame (1) includes a rectangular frame assembled from multiple square tubes, the inner cavity of which forms the receiving cavity; the upper end of the rectangular frame is connected to a first fixing plate (10), a second fixing plate (11) and a third fixing plate (12) that extend along its width direction and are arranged sequentially along its length direction; the drive motor (6) is connected to the first fixing plate (10); the four guide pulleys (9) are divided into two groups that are staggered along the width direction of the mounting frame (1); the two groups of guide pulleys (9) are respectively connected to the two ends of the second fixing plate (11) and the third fixing plate (12).
7. The vehicle component sound isolation performance test tooling hoist apparatus of claim 4 or 5 or 6, wherein: The mounting bracket (1) is connected to two bearings symmetrically arranged along its width direction, and the ends of the two output shafts away from the drive motor (6) are respectively fitted into the two bearings.