Test bench

Abstract

The utility model provides a test bed, which is used for carrying out an abnormal sound test on a door, and comprises a frame body capable of supporting and fixing the door; the mounting seat is fixedly connected to the frame body and is used for mounting components required by matching of the door and the door frame structure; the sealing strip simulation piece is arranged on the frame body, and when the door is fixedly connected to the frame body, the sealing strip simulation piece makes contact with a structure, used for installing a sealing strip, of the door. According to the test bed, on the basis of the frame body capable of supporting and fixing the door, the mounting seat is additionally arranged on the frame body, and the mounting seat can be used for mounting parts, such as a supporting rod and a hinge, required by matching of the door and a door frame structure, so that the actual mounting state of the door on the door frame structure can be simulated more vividly; therefore, the accuracy of the test result can be improved, the whole vehicle test does not need to be carried out after the bench test is completed, the research and development rhythm of the vehicle is accelerated, and the research and development efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile manufacturing, and in particular to a test bench. Background Art

[0002] With the improvement of living standards, consumers have higher and higher requirements for the comfort and quality of automobiles. Abnormal noise, as a strong perception item during the use of automobiles, is an important indicator reflecting the comfort and quality of automobiles.

[0003] At present, the tailgate abnormal noise test carried out in the automobile manufacturing process includes two forms: bench test and vehicle test. The bench test is to fix the tailgate on a vibration bench, and then set the vibration bench on an excitation table to drive the vibration bench and the tailgate on it to vibrate, and perform abnormal noise detection during the vibration process. The existing vibration bench structure is relatively simple, and it only plays the role of supporting and fixing the tailgate. The test results obtained by using this vibration bench for abnormal noise test are different from the actual installation status of the tailgate on the whole vehicle, resulting in low accuracy of the test results. It is also necessary to conduct a vehicle test after the bench test is completed to identify the abnormal noise problem again, which will affect the pace of automobile research and development and lead to low efficiency of automobile research and development. Utility Model Content

[0004] In view of this, the present application provides a test bench, which can improve the accuracy of tailgate bench testing, speed up the pace of vehicle research and development, and improve research and development efficiency.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A test bench for performing a squeak test on a door, comprising:

[0007] A frame capable of supporting and fixing the door;

[0008] A mounting seat, fixedly connected to the frame, and used to mount components required for the door and door frame structure to match;

[0009] The sealing strip simulation part is arranged on the frame. When the door is fixedly connected to the frame, the sealing strip simulation part contacts the structure of the door for installing the sealing strip.

[0010] In an optional embodiment, a contact seat is further included on the frame, the door includes a contact block in contact with the door frame structure, and the contact seat is used to contact and support the contact block.

[0011] In an optional embodiment, it further comprises a sealing strip simulation member disposed on the frame, and when the door is fixedly connected to the frame, the sealing strip simulation member contacts a structure of the door for installing a sealing strip.

[0012] In an optional embodiment, the components required for the cooperation between the door and the door frame structure include a stay for keeping the door in an open state, and a hinge for rotatably connecting the door and the door frame structure;

[0013] Furthermore, the mounting seat includes a support rod mounting seat connected to one end of the support rod and a hinge mounting seat connected to the hinge.

[0014] In an optional embodiment, the contact block includes a plurality of contact blocks having different functions, and the plurality of contact blocks include a limit block and a buffer block;

[0015] Furthermore, the contact seat includes a limit contact seat that contacts with the limit block and supports the limit block, and a buffer contact seat that contacts with the buffer block and supports the buffer block.

[0016] In an optional embodiment, the mounting seat includes a mounting plate and a connecting hole provided on the mounting plate, wherein the connecting hole is used to connect a support rod or a hinge;

[0017] The contact seat comprises a contact plate, and a contact surface of the contact plate matches a surface of a limiting block or a buffer block.

[0018] In an optional embodiment, a supporting structure composed of a part of the frame, the mounting seat, the contact seat and the sealing strip simulation member is the same as the structure of the door frame structure.

[0019] In an optional embodiment, the support structure is a symmetrical structure that is symmetrical about a longitudinal center line of the door.

[0020] In an optional embodiment, the overall modal of the test bench is not less than 100 Hz.

[0021] In an optional embodiment, the frame, the mounting seat, the sealing strip simulation member and the contact seat are an integrated structure.

[0022] In an optional embodiment, the door is a tailgate of a vehicle, the door frame structure is a portion of a frame of the vehicle that cooperates with the tailgate, and the test bench is a tailgate test bench.

[0023] The test bench provided in the present application, based on a frame that can support and fix the door, also has a mounting base added to the frame. This mounting base can be used to install components required for the coordination of the door and door frame structure, such as struts, hinges, etc., so as to more realistically simulate the actual installation state of the door on the door frame structure, thereby improving the accuracy of the test results. There is no need to conduct a whole vehicle test after the bench test is completed, which accelerates the pace of vehicle research and development and improves research and development efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the structure of the test bench provided in an embodiment of the present application.

[0026] exist Figure 1 middle:

[0027] 1-frame, 2-sealing strip simulation part, 3-support rod mounting seat, 4-hinge mounting seat, 5-limiting contact seat, 6-buffer contact seat. DETAILED DESCRIPTION

[0028] The present application provides a test bench that can improve the accuracy of tailgate bench testing, speed up vehicle research and development, and improve research and development efficiency.

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] like Figure 1 As shown, the embodiment of the present application provides a test bench for cooperating with a vibration table to perform an abnormal sound test on a door. The door to be tested is, for example, a tailgate of a car. The test bench includes a frame 1 and a mounting seat. The frame 1 is the main structure of the test bench. The structural shape thereof is not specifically limited as long as it can support and fix the door. For example, the frame 1 can be Figure 1The right-angle wedge structure shown, and when conducting the test, since the door needs to be fixed on the frame 1 and the frame 1 needs to be placed on the excitation table for vibration, the frame 1 needs to have a large dynamic stiffness. Therefore, metal pipes and metal profiles (such as angle steels, channel steels, etc.) can be used to form the frame 1 by welding; the mounting seat is an additional structure, which is fixedly connected to the frame 1, and the mounting seat is used to install the components required for the door and door frame structure to cooperate (this component will be referred to as the matching component in the subsequent content, and the matching component is specifically the sealing strip simulation part 2, the support rod and the hinge described later). That is to say, by setting the mounting seat, the matching components of the door and door frame structure can be installed thereon, and then when the door is fixed on the frame 1, the matching components are matched with the door. In this way, the actual installation state of the door can be more realistically simulated. When the door being tested is the tailgate of a car, the installation state of the tailgate on the actual car can be more realistically restored.

[0031] The test bench of the above structure, compared with the bench in the prior art, adds a mounting seat for installing matching components. When performing abnormal noise test, by installing real matching components on the mounting seat and making the matching components match the tailgate fixed on the frame 1, the actual installation situation of the tailgate can be restored more accurately, making the test more realistic and the test results more accurate, so that the abnormal noise problem of the tailgate can be identified more quickly and accurately, and there is no need to conduct the whole vehicle test after the bench test is completed, so that the research and development rhythm of the vehicle is accelerated and the research and development efficiency is improved. In addition, since real matching components are used in the test process, the matching components are also tested in the test process, so the abnormal noise problem of the matching components can also be identified, making the function of the test bench richer.

[0032] Further, such as Figure 1 As shown, the test bench also includes a contact seat arranged on the frame 1, and the door includes a contact block in contact with the door frame structure, and the contact seat is used to contact and support the contact block. When the door is closed on the door frame structure, the door will contact the door frame structure, and the part of the door that contacts the door frame structure is referred to as the contact block in this application. In order to make the door on the frame 1 more realistically simulate the closed state of the door, a contact seat that cooperates with the contact block is arranged on the frame 1, so as to contact and support the contact block on the door when the door is closed, so that the frame 1 is closer to the door frame structure, and the authenticity of the door installation during the test is improved.

[0033] Furthermore, if Figure 1As shown, the test bench also includes a sealing strip simulation 2 arranged on the frame 1. When the door is fixedly connected to the frame 1, the sealing strip simulation 2 contacts and cooperates with the structure of the door for installing the sealing strip. In the actual structure, it is necessary to set a sealing strip on the door or door frame structure (in most cases, the sealing strip is installed on the door) to ensure that the door has good sealing when it is closed. Based on this, the sealing strip simulation 2 is set on the frame 1, and the structure for installing the sealing strip on the door cooperates with the sealing strip simulation 2 when the door is fixed on the frame 1, that is, the sealing strip simulation 2 is used to simulate the sealing strip, so that the real closed state of the door can be simulated, making the test effect more realistic. Among them, the sealing strip simulation 2 is fully shaped according to the shape of the real sealing strip on the whole vehicle, and it is ensured that the sealing strip simulation 2 has the real vehicle interference amount of the sealing strip when cooperating with the door, so as to achieve a real simulation of the installation state of the sealing strip on the real vehicle.

[0034] Specifically, the parts required for the door and the door frame structure to cooperate include a support rod (which may be an electric support rod) to keep the door in an open state, and a hinge that rotatably connects the door and the door frame structure; and the mounting seat includes a support rod mounting seat 3 connected to one end of the support rod, and a hinge mounting seat 4 connected to the hinge. Because the support rod and the hinge are commonly used parts on the vehicle that cooperate with the tailgate, a mounting seat is specially set for these two parts, and the setting position of the mounting seat on the frame 1 is close to or consistent with the position of the support rod and the hinge on the door frame structure, so that the real support rod and the real hinge can be installed on the frame 1, and then the door installation state can be simulated more comprehensively. In addition, when the door is a door on other equipment, and the cooperating parts between the door and the door frame structure are other parts, the corresponding mounting seat can be replaced or added on the frame 1.

[0035] The contact block includes a plurality of contact blocks with different functions, and the plurality of contact blocks include a limit block and a buffer block; and the contact seat includes a limit contact seat 5 that contacts and supports the limit block, and a buffer contact seat 6 that contacts and supports the buffer block. The reason for setting the limit contact seat 5 and the buffer contact seat 6 on the frame 1 is the same as the reason for setting the above-mentioned support rod mounting seat 3 and hinge mounting seat 4. Because the door has a limit block and a buffer block, the limit contact seat 5 and the buffer contact seat 6 are correspondingly set so that the limit contact seat 5 can cooperate with the limit block and the buffer contact seat 6 can cooperate with the buffer block, thereby realizing a more comprehensive simulation of the door installation state.

[0036] The mounting seat includes a mounting plate and a connection hole provided on the mounting plate, and the connection hole is used to connect the support rod or hinge; the contact seat includes a contact plate, and the contact surface of the contact plate matches the surface of the limit block or buffer block. The structure of the mounting seat and the contact seat is simpler for the convenience of processing and use, that is, the mounting seat is set to be plate-shaped, and in order to achieve the installation of the support rod or hinge, a connection hole is provided on the mounting plate, and the support rod or hinge is installed on the mounting seat by passing a connecting member such as a bolt through the connection hole and connecting with the support rod or hinge, or the structure provided on the mounting plate for connecting the support rod or hinge can also be a slot, a pin, etc. Since the contact seat only needs to abut against the limit block or buffer block, the contact seat is set to be a plate-shaped member with a large contact area, and since no installation components are required, there is no need to set a mounting structure on the contact plate, and it is only necessary to make the contact surface of the contact plate match the limit block or buffer block.

[0037] In the present application, the supporting structure composed of the part of the frame 1, the mounting seat, the contact seat and the sealing strip simulation member 2 is made to be the same as the structure of the door frame structure. That is to say, by adding the mounting seat, the contact seat and the sealing strip simulation member 2 to the frame 1 and combining them with the local structure of the frame 1 used to support the door, a supporting structure for supporting and fixing the door is formed. In order to restore the installation state of the door more realistically and comprehensively, it is preferred to make the supporting structure the same as the door frame structure. More specifically, the supporting structure is made the same as the local structure of the door frame structure that can be connected and contacted with the door (that is, the supporting structure does not restore the local structure of the door frame structure that is not in contact with the door, thereby simplifying the structure of the test bench and reducing the manufacturing cost), so as to further optimize the structure of the test bench and maximize the test accuracy of the test bench.

[0038] like Figure 1 As shown, the support structure is a symmetrical structure symmetrical about the longitudinal center line of the door, that is, the above-mentioned support rod mounting seats 3 are an even number (for example Figure 1 The two shown in the figure) and these support rod mounting seats 3 are symmetrically arranged. Similarly, the above-mentioned hinge mounting seat 4, limit contact seat 5 and buffer contact seat 6 are all arranged in this way. On the one hand, they can better cooperate with the door, and on the other hand, they can make the structural layout of the test bench more reasonable, the force is more balanced, and the test accuracy can also be improved. It should be noted that the longitudinal center line of the door refers to: when the door is in a state of being fixed on the frame 1, the center line of the door perpendicular to its width direction (when the door is a tailgate, this width direction can also be understood as the width direction of the entire vehicle).

[0039] Since the test bench needs to be placed on an excitation table to drive the test bench to vibrate when the door is subjected to an abnormal noise test, the test bench needs to have sufficient overall dynamic stiffness. Therefore, the present application prefers that the test bench is an integrated structure, that is, the frame 1, the mounting seat, the sealing strip simulation part 2 and the contact seat are an integrated structure formed by welding or casting, and the overall modal of the test bench is not less than 100 Hz. That is, when designing the test bench in the present application, the dynamic stiffness of the test bench is checked in detail to ensure that the overall modal of the test bench is not less than 100 Hz. In the design process, the dynamic stiffness of the strut mounting seat 3, the hinge mounting seat 4, the limit contact seat 5 and the buffer contact seat 6 are optimized by CAE method to be consistent with the dynamic stiffness of the strut mounting point, hinge mounting point, limit block mounting point and buffer block mounting point of the whole vehicle, so that the test bench has good mechanical properties and can better meet the test requirements.

[0040] In an optional embodiment, the above-mentioned door specifically refers to the tailgate of the vehicle, and the door frame structure is the part of the vehicle frame that cooperates with the tailgate. Based on this, the test bench provided in the present application is a tailgate test bench specially used for performing abnormal noise tests on the tailgate of the vehicle.

[0041] In addition, when the door to be tested is not specifically a vehicle tailgate, the above-mentioned test bench can also be used for the development of abnormal noise of door systems in multiple fields such as rail transportation, aerospace, and architectural design.

[0042] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0043] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0044] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0045] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0046] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0047] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A test bench, characterized in that: Used to test the door for abnormal noise, including: A frame capable of supporting and fixing the door; A mounting seat, fixedly connected to the frame, and used to mount components required for the door and door frame structure to match; The sealing strip simulation part is arranged on the frame. When the door is fixedly connected to the frame, the sealing strip simulation part contacts the structure of the door for installing the sealing strip.

2. The test bench according to claim 1, characterized in that: It also includes a contact seat arranged on the frame, the door includes a contact block in contact with the door frame structure, and the contact seat is used to contact and support the contact block.

3. The test bench according to claim 1, characterized in that: The components required for the cooperation between the door and the door frame structure include a stay rod for keeping the door in an open state, and a hinge for rotatably connecting the door and the door frame structure; Furthermore, the mounting seat includes a support rod mounting seat connected to one end of the support rod and a hinge mounting seat connected to the hinge.

4. The test bench according to claim 2, characterized in that: The contact blocks include a plurality of contact blocks with different functions, and the plurality of contact blocks include a limit block and a buffer block; Furthermore, the contact seat includes a limit contact seat that contacts with the limit block and supports the limit block, and a buffer contact seat that contacts with the buffer block and supports the buffer block.

5. The test bench according to claim 2, characterized in that: The mounting seat includes a mounting plate and a connecting hole provided on the mounting plate, wherein the connecting hole is used to connect a support rod or a hinge; The contact seat comprises a contact plate, and a contact surface of the contact plate matches a surface of a limiting block or a buffer block.

6. The test bench according to claim 1, characterized in that: The supporting structure composed of a part of the frame, the mounting seat, the contact seat and the sealing strip simulation member is the same as the structure of the door frame structure.

7. The test bench according to claim 6, characterized in that: The support structure is a symmetrical structure that is symmetrical about a longitudinal center line of the door.

8. The test bench according to claim 1, characterized in that: The overall modal of the test bench is not less than 100 Hz.

9. The test bench according to any one of claims 1 to 8, characterized in that: The frame, the mounting seat, the sealing strip simulation component and the contact seat are an integrated structure.

10. The test bench according to claim 1, characterized in that: The door is a tailgate of a vehicle, the door frame structure is a portion of a vehicle frame that cooperates with the tailgate, and the test bench is a tailgate test bench.

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