Suspension structure impact test bench

Abstract

The utility model relates to an impact test bench with a suspension structure, which belongs to the technical field of suspension testing and comprises a sealing test bench, a servo hydraulic cylinder, a closed circulating gas refrigerator, an industrial humidifier, a heating air bellow, a pressure sensor and an impact head, the servo hydraulic cylinder is mounted on the sealing test bench, and an impact detection support is fixedly mounted at the driving end of the servo hydraulic cylinder. The impact detection support, the pressure sensor and the impact head are sequentially connected through bolts, and the closed circulating gas refrigerator, the industrial humidifier and the heating air box are sequentially communicated with the sealing test board. According to the utility model, the load impact test is applied to the suspension through the servo hydraulic actuator, and the environment simulation cabin is configured to simulate the working conditions of high temperature, low cold and damp heat according to the requirements, so that the impact test can be carried out on the suspension structure in a real service environment, and the test accuracy can be further improved.

Description

Technical Field

[0001] This utility model relates to the field of suspension testing technology, and in particular to a suspension structure impact testing platform. Background Technology

[0002] The suspension mount is mainly used to isolate the transmission of engine vibration to the vehicle body and reduce noise and vibration inside the vehicle. It is an upgraded version of the rubber suspension mount. By introducing liquid and a carefully designed flow channel structure, it significantly improves vibration reduction. It usually requires the use of a high-power servo hydraulic actuator to apply dynamic load to the suspension mount according to a preset high acceleration, large displacement, and short time-duration impact waveform to conduct impact testing.

[0003] A search revealed that Chinese patent CN201822002226.1 discloses a device for dynamic impact testing of automotive suspension bracket connection structures. This device tests the dynamic impact performance of a single suspension bracket connection structure, simulating the mechanical performance of the engine suspension connection structure during a car collision. The test results are then fed back to the design department, allowing for timely correction of any problems. This improves development efficiency and reduces the high R&D costs associated with testing component performance through real-vehicle crash tests.

[0004] The above-mentioned technical solution has the following drawbacks. Although such automotive suspension impact testing devices can test whether the suspension will break or undergo severe plastic deformation under impact load by using an impact head, it is inconvenient to simulate the mechanical energy of the real service environment in actual use. In order to further improve the accuracy of the test, a suspension structure impact test bench is proposed. It applies load impact test to the suspension through a servo hydraulic actuator and is equipped with an environmental simulation chamber that can simulate high temperature, low temperature, and humid heat conditions as needed, so as to conduct impact test on the suspension structure under the real service environment.

[0005] In view of this, this work improves and solves the above problems. Through dedicated research and application of theoretical principles, a technical solution with a reasonable design that can effectively improve the above defects has finally been proposed.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] This invention provides a suspension structure impact test bench, which solves the problem that existing equipment cannot reproduce the real service environment of suspensions, significantly improves the accuracy of suspension structure impact testing, and is especially suitable for high-frequency impact testing of motors for new energy vehicle suspensions, impact testing of reinforced suspensions for military vehicles and related suspension research and development fields, filling the technical gap in environmental coupling impact testing.

[0008] The present invention provides the following solution to the above-mentioned technical problems: a suspended impact test bench, comprising a sealing test bench, a servo hydraulic cylinder, a closed-loop gas chiller, an industrial humidifier, a heated air box, a pressure sensor, and an impact head. The servo hydraulic cylinder is mounted on the sealing test bench, and an impact detection bracket is fixedly mounted on the drive end of the servo hydraulic cylinder. The impact detection bracket, the pressure sensor, and the impact head are sequentially connected by bolts. The closed-loop gas chiller, the industrial humidifier, and the heated air box are sequentially connected to the sealing test bench.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the impact testing bracket is provided with limit cylinders on both sides, the sealing test bench is equipped with limit rods, and the limit cylinders are provided with limit holes corresponding to the limit rods. The inner wall of the limit holes is slidably connected to the limit rods, so that the impact testing bracket can be stably raised and lowered within the sealing test bench, thereby conducting impact tests on the built-in suspension structure.

[0011] Furthermore, the sealing test bench is fixedly equipped with a partition plate, which separates the equipment cavity and the sealing environment simulation chamber. The servo hydraulic cylinder is installed in the equipment cavity, and the drive end of the servo hydraulic cylinder extends into the sealing environment simulation chamber. The perforation position is sealed with sealant. The sealing environment simulation chamber is equipped with a suspension positioning fixture by screws to ensure the sealing effect of the test cavity and improve the stability of the test process.

[0012] Furthermore, the heating air box is provided with an exhaust chamber and an air inlet chamber. The air inlet chamber is equipped with an electric heater, an air intake fan, and a dust filter. The exhaust chamber is equipped with an exhaust hopper. The air intake fan can introduce air, and the electric heater heats the introduced air, thereby enabling rapid heating of the sealed environment simulation chamber.

[0013] Furthermore, the exhaust hopper is fixedly connected to an exhaust fan, and the exhaust fan is connected to a waste gas discharge pipeline. The exhaust fan can quickly transmit the internal waste gas to the waste gas discharge pipeline of the factory or laboratory building for the same treatment.

[0014] Furthermore, both the equipment cavity and the sealed environment simulation chamber are equipped with sealed maintenance doors, which can ensure the sealing effect at the door.

[0015] Furthermore, the sealed maintenance door of the sealed environment simulation chamber is equipped with a temperature and humidity detector, which can detect the temperature and humidity inside the sealed environment simulation chamber.

[0016] Furthermore, both the exhaust chamber and the intake chamber of the heating air box are equipped with inspection doors and louvers, allowing for maintenance of the internal equipment by opening the inspection doors.

[0017] This utility model provides a suspended impact testing bench, which has the following advantages:

[0018] 1. The suspension is subjected to load impact test by servo hydraulic actuator. It is equipped with an environmental simulation chamber that can simulate high temperature, low temperature and humid heat as needed, so as to conduct impact test on the suspension structure under real service environment, thereby further improving the test accuracy.

[0019] 2. It solves the problem that existing equipment cannot reproduce the real service environment of the suspension, significantly improves the accuracy of suspension structure impact testing, and is especially suitable for high-frequency impact testing of motors for new energy vehicle suspensions, impact testing of reinforced suspensions for military vehicles and related suspension R&D fields, filling the technical gap in environmental coupling impact testing;

[0020] 3. It solves the problem of distorted test data caused by traditional testing at normal temperature and pressure, which ignores the influence of temperature and humidity on the performance of rubber materials, and can effectively improve the comprehensiveness of impact testing of suspended structures.

[0021] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of a suspension structure impact test bench provided in an embodiment of the present invention;

[0024] Figure 2 A front view of a suspension structure impact test bench provided in an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the structure of an impact testing bracket in a suspended impact testing bench according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of a heating air box in a suspended impact test bench according to an embodiment of the present invention.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Sealing test bench; 2. Partition plate; 3. Equipment cavity; 4. Sealed environment simulation chamber; 5. Servo hydraulic cylinder; 6. Closed-loop gas refrigerator; 7. Industrial humidifier; 8. Heated air box; 9. Impact testing bracket; 10. Pressure sensor; 11. Impact head; 12. Limiting cylinder; 13. Limiting rod; 14. Suspension positioning fixture; 15. Electric heater; 16. Inlet fan; 17. Dust filter; 18. Exhaust hopper; 19. Exhaust fan; 20. Waste gas discharge pipeline; 21. Sealed inspection door; 22. Temperature and humidity detector; 23. Inspection door; 24. Louver. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-4 The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0030] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] like Figure 1-4As shown, a suspended impact test bench includes a sealing test bench 1, a servo hydraulic cylinder 5, a closed-loop gas chiller 6, an industrial humidifier 7, a heated air box 8, a pressure sensor 10, and an impact head 11. The servo hydraulic cylinder 5 is mounted on the sealing test bench 1, and an impact detection bracket 9 is fixedly mounted on the drive end of the servo hydraulic cylinder 5. The impact detection bracket 9, the pressure sensor 10, and the impact head 11 are connected in sequence by bolts. The closed-loop gas chiller 6, the industrial humidifier 7, and the heated air box 8 are connected to the sealing test bench 1 in sequence.

[0033] Preferably, the impact testing bracket 9 is provided with limit cylinders 12 on both sides, and the sealing test bench 1 is equipped with limit rods 13. The limit cylinders 12 are provided with limit holes corresponding to the limit rods 13. The inner wall of the limit holes is slidably connected to the limit rods 13, so that the impact testing bracket 9 can be stably raised and lowered within the sealing test bench 1, thereby conducting impact tests on the built-in suspension structure.

[0034] Preferably, the sealing test bench 1 is fixedly installed with a partition plate 2, which separates the equipment cavity 3 and the sealed environment simulation chamber 4. The servo hydraulic cylinder 5 is installed in the equipment cavity 3, and the drive end of the servo hydraulic cylinder 5 passes through the sealed environment simulation chamber 4. The perforation position is sealed with sealant. The sealed environment simulation chamber 4 is equipped with a suspension positioning fixture 14 by screws to ensure the sealing effect of the test cavity and improve the stability of the test process.

[0035] Preferably, the heating air box 8 is provided with an exhaust chamber and an air inlet chamber. The air inlet chamber is equipped with an electric heater 15, an air intake fan 16, and a dust filter 17. The exhaust chamber is equipped with an exhaust hopper 18. The air intake fan 16 can introduce air, and the electric heater 15 heats the introduced air, thereby enabling rapid heating of the sealed environment simulation chamber 4.

[0036] Preferably, the exhaust hopper 18 is fixedly connected to an exhaust fan 19, and the exhaust fan 19 is connected to a waste gas discharge pipe 20. The exhaust fan 19 can quickly transmit the internal waste gas to the waste gas discharge pipe 20 of the factory or laboratory building for the same treatment.

[0037] Preferably, both the equipment cavity 3 and the sealed environment simulation chamber 4 are equipped with sealed maintenance doors 21, which can ensure the sealing effect at the door.

[0038] Preferably, the sealed access door 21 of the sealed environment simulation chamber 4 is equipped with a temperature and humidity detector 22, which can detect the temperature and humidity inside the sealed environment simulation chamber 4.

[0039] Preferably, the exhaust chamber and the intake chamber of the heating air box 8 are both equipped with inspection doors 23 and louvers 24, and the internal equipment can be inspected by opening the inspection door 23.

[0040] The specific working principle and usage method of this utility model are as follows: Select a suitable suspension positioning fixture 14 according to the model of the suspension structure. The suspension positioning fixture 14 is installed in the sealed environment simulation chamber 4 by screws. After the suspension positioning fixture 14 is connected to the hydraulic oil pump or power supply, the suspension structure can be positioned so as to carry out impact testing.

[0041] The closed and sealed maintenance door 21 is connected to the hydraulic pump station and the servo hydraulic cylinder 5. The servo hydraulic cylinder 5 can drive the impact detection bracket 9 to press down. The limit rod 13 can limit the limit cylinder 12, so that the impact detection bracket 9 can press down stably to impact the suspension. The pressure sensor 10 at the gap between the impact detection bracket 9 and the impact head 11 can monitor the impact pressure.

[0042] Open the maintenance door 23, start the electric heater 15 and the air intake fan 16, and hot air can be transmitted to the sealed environment simulation chamber 4, so that the suspended test area can be heated. Start the industrial humidifier 7 to introduce humid air to increase humidity, thereby creating a hot and humid environment for impact testing.

[0043] Starting the industrial humidifier 7 (HJSM-03) and the closed-loop gas chiller 6 (ThermoTSTGC80) can introduce cold and humid air into the sealed environment simulation chamber 4, thereby simulating a cold and humid environment for impact testing.

[0044] After the test is completed, the exhaust fan 19 can be started to transfer the test air in the sealed environment simulation chamber 4 to the exhaust gas discharge pipe 20. After cleaning, the sealed inspection door 21 can be opened to remove the internal suspension structure and replace it with a new test suspension.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A suspended impact test bench, comprising a sealed test bench (1), a servo hydraulic cylinder (5), a closed-loop gas chiller (6), an industrial humidifier (7), a heated air box (8), a pressure sensor (10), and an impact head (11), characterized in that: The servo hydraulic cylinder (5) is installed on the sealing test bench (1). The drive end of the servo hydraulic cylinder (5) is fixedly installed with an impact detection bracket (9). The impact detection bracket (9), pressure sensor (10), and impact head (11) are connected in sequence by bolts. The closed-loop gas refrigerator (6), industrial humidifier (7), and heating air box (8) are connected to the sealing test bench (1) in sequence.

2. The suspended impact testing bench according to claim 1, characterized in that, Both sides of the impact testing bracket (9) are provided with limiting cylinders (12), the sealing test bench (1) is equipped with a limiting rod (13), the limiting cylinder (12) has a limiting hole corresponding to the limiting rod (13), and the inner wall of the limiting hole is slidably connected to the limiting rod (13).

3. The suspended impact testing bench according to claim 1, characterized in that, The sealing test bench (1) is fixedly installed with a partition plate (2). The sealing test bench (1) is divided into an equipment cavity (3) and a sealing environment simulation chamber (4) by the partition plate (2). The servo hydraulic cylinder (5) is installed in the equipment cavity (3). The drive end of the servo hydraulic cylinder (5) extends into the sealing environment simulation chamber (4). The sealing environment simulation chamber (4) is equipped with a suspension positioning fixture (14) by screws.

4. The suspended impact testing bench according to claim 1, characterized in that, The heating air box (8) is provided with an exhaust chamber and an air inlet chamber. The air inlet chamber is equipped with an electric heater (15), an air inlet fan (16), and a dust filter (17). The exhaust chamber is equipped with an exhaust hopper (18).

5. The suspended impact testing bench according to claim 4, characterized in that, The exhaust hopper (18) is fixedly connected to an exhaust fan (19), and the exhaust fan (19) is connected to a waste gas discharge pipe (20).

6. The suspended structure impact test bench according to claim 3, characterized in that, Both the equipment cavity (3) and the sealed environment simulation chamber (4) are equipped with sealed maintenance doors (21).

7. The suspended impact testing bench according to claim 3, characterized in that, The sealed maintenance door (21) of the sealed environment simulation chamber (4) is equipped with a temperature and humidity detector (22).

8. The suspension structure impact test bench according to claim 1, characterized in that, The exhaust chamber and the air inlet chamber of the heating air box (8) are both equipped with inspection doors (23) and louvers (24).

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