Multifunctional power measuring environment test chamber

Abstract

The utility model discloses a multifunctional power measuring environment test chamber, which comprises a first test chamber, a second test chamber, a partition door, a vehicle access gate, an underground space, a power measuring platform, a dynamometer assembly, an illumination assembly and a large fan, a pump room is further arranged outside the first test cabin and the second test cabin, industrial refrigeration equipment and industrial heating equipment are arranged in the pump room, and pipeline systems connected with the industrial refrigeration equipment and the industrial heating equipment are arranged on the first test cabin and the second test cabin respectively. Through the arrangement of the high and low temperature system, the illumination, the fan and the dynamometer assembly, the multifunctional dynamometer environment test chamber not only has the test capabilities of high temperature, low temperature, damp heat and temperature shock, but also has the dynamometer test function under the environments of wind test simulation, solar thermal effect and the like.

Description

A multifunctional dynamometer environmental test chamber Technical Field

[0001] This utility model relates to the field of test chamber technology, specifically to a multifunctional dynamometer environmental test chamber. Background Technology

[0002] An environmental test chamber is a closed indoor space used for testing large equipment. For example, when conducting dynamometer tests on vehicles under complex climatic conditions, the vehicle needs to be placed in an environmental test chamber to test its performance by simulating various working conditions and environments.

[0003] For ordinary vehicles, it is sufficient to complete various vehicle tests in an independent environmental chamber by setting up the experimental environment. However, for some special vehicles, such as certain military and civilian vehicles, special equipment, and emergency rescue vehicles, not only are independent high-temperature and low-temperature tests required, but the impact of drastic changes in environmental factors must also be considered. For example, in scenarios involving airdropped equipment or vehicles, they will face temperature shocks. In order to assess the environmental adaptability under such scenarios, high and low temperature shock tests need to be conducted on the entire vehicle. Existing environmental test chambers do not have the capability for such whole-vehicle testing; they can only perform high and low temperature shock tests on automotive parts. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the prior art by providing a multifunctional dynamometer environmental test chamber.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A multifunctional dynamometer environmental test chamber includes a first test chamber and a second test chamber arranged consecutively. A closable partition door separates the first and second test chambers. A vehicle access door is located on the side of the first test chamber away from the partition door. An underground space is located beneath the first and / or second test chambers. A dynamometer platform, flush with the ground of the first or second test chamber, is located within the underground space. A dynamometer assembly is located below the dynamometer platform. A retractable lighting assembly is located below the roof of the first and / or second test chambers. A large, movable fan is located inside the second test chamber. A pump room is located outside the first and second test chambers. The pump room contains industrial refrigeration equipment and industrial heating equipment. Piping systems connecting the industrial refrigeration equipment and the industrial heating equipment are respectively installed on the first and second test chambers.

[0007] This multifunctional dynamometer environmental test chamber, through the setup of a high and low temperature system, lighting, a fan, and the dynamometer assembly, not only possesses the testing capabilities for high temperature, low temperature, damp heat, and temperature shock, but also has the function of dynamometer testing under simulated wind tests and solar thermal effects. This environmental test chamber actually comprises at least three large, independent spaces: the first test chamber, the second test chamber, and the underground space. Each space has a specific function. The first and second test chambers can accommodate vehicles and simulate various test environments. The underground space is mainly used to house the dynamometer assembly, allowing the dynamometer hub to conduct dynamometer tests on the vehicles in the upper chamber.

[0008] Furthermore, the temperature regulation range of the first test chamber and the second test chamber is -65℃ to +75℃. When conducting high and low temperature impact tests on vehicles, one of the first test chamber and the second test chamber is a high temperature chamber and the other is a low temperature chamber.

[0009] Furthermore, the first test chamber and the second test chamber are provided with multiple first air inlets and first air outlets, which are respectively connected to the pipeline system, which is erected above and to the side of the first test chamber and the second test chamber.

[0010] Furthermore, the partition door is an electric insulated sliding door or an insulated roller shutter door.

[0011] Furthermore, the dynamometer platform includes several supporting cover plates erected on the underground space. Each supporting cover plate has a sealing strip at its overlapping joint. Each supporting cover plate has a hollow cavity filled with heat insulation material. At least four slots are reserved between the supporting cover plates on the dynamometer platform.

[0012] Furthermore, the dynamometer assembly includes a support base disposed within the underground space, a hub spindle mounted on the support base, a stator assembly mounted on the hub spindle, and a dynamometer hub rotatably mounted on the hub spindle. The dynamometer hub contains a permanent magnet adapted to the stator assembly, and its upper arc surface protrudes from the dynamometer platform. One end of the hub spindle is connected to a torque arm, and the other end of the support base is also provided with an encoder connected to the dynamometer hub. A tension seat is also provided on the outer side of the support base, and a torque sensor is mounted on the tension seat. One end of the torque sensor is connected to a force transmission rod, which is connected to the torque arm.

[0013] Furthermore, the lighting assembly includes several electrically operated telescopic booms disposed below the cabin roof, with a gantry connected to the lower part of each boom. The gantry includes multiple long rods and short rods connecting the long rods, and several light sources are installed below the long rods.

[0014] Furthermore, several ground rails are arranged on the ground of the first test chamber, the second test chamber, and the dynamometer platform. The large fan is installed on the ground rails by supports, and several tension piles are also provided on the ground rails.

[0015] Furthermore, the first test chamber and the second test chamber are also connected to a fresh air system. The inner walls of the first test chamber and the second test chamber are provided with multiple second air inlets and second air outlets. The second air inlets and the second air outlets are respectively connected to the fresh air system through pipes.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This multifunctional dynamometer environmental test chamber, through the setting of high and low temperature systems, lighting, fans, and the dynamometer components, not only has the testing capabilities for high temperature, low temperature, damp heat, and temperature shock, but also has the function of dynamometer testing under simulated wind tests and solar thermal effects; 2. This environmental test chamber has three large independent spaces, namely the first test chamber, the second test chamber, and the underground space. Each of the three spaces has a function. The first test chamber and the second test chamber can accommodate vehicles and simulate various test environments. The underground space is mainly used to set up the dynamometer components so that the dynamometer hub can conduct dynamometer tests on the vehicles in the upper chamber; 3. The dynamometer platform not only has support and load-bearing capacity, but also heat insulation capacity, which can reduce heat exchange between the underground space and the test chamber; 4. The setting of the dynamometer hub, hub spindle, and torque arm facilitates the connection of torque sensors and encoders, enabling the detection of dynamometer data. Attached Figure Description

[0017] Figure 1 is an overall schematic diagram of a multifunctional dynamometer environmental test chamber according to this utility model;

[0018] Figure 2 is a schematic cross-sectional view of the underground space of a multifunctional dynamometer environmental test chamber according to this utility model;

[0019] Figure 3 is a schematic diagram of the top of the first test chamber of this utility model;

[0020] Figure 4 is a schematic diagram of the arrangement of the dynamometer platform and dynamometer components of this utility model;

[0021] Figure 5 is a schematic diagram of the connection between the support cover plate and the ground beam on the dynamometer platform of this utility model.

[0022] Figure 6 is a three-dimensional schematic diagram of the dynamometer assembly of this utility model;

[0023] Figure 7 is a two-dimensional schematic diagram of the dynamometer assembly of this utility model;

[0024] Figure 8 is a cross-sectional structural diagram of the dynamometer assembly of this utility model;

[0025] In the diagram: 1. First test chamber; 2. Second test chamber; 3. Partition door; 4. Vehicle entrance / exit gate; 5. Underground space; 6. Dynamometer platform; 601. Ground beam; 602. Support cover plate; 603. Support platform; 7. Dynamometer assembly; 701. Support seat; 702. Rotary hub spindle; 703. Stator assembly; 704. Dynamometer rotating hub; 705. Permanent magnet; 8. Large fan; 9. Pump room; 10. Piping system; 11. First air inlet; 12. First air outlet; 13. Electric telescopic boom; 14. Hanger; 1401. Long rod; 1402. Short rod; 15. Light source; 16. Second air outlet; 17. Second air inlet; 18. Sealing strip; 19. Tension pile; 20. Torque arm; 21. Tension seat; 22. Torque sensor; 23. Force transmission rod; 24. Encoder. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "middle," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] As shown in Figures 1 to 8, a multifunctional dynamometer environmental test chamber includes a first test chamber 1 and a second test chamber 2 arranged consecutively. An openable and closable partition door 3 is provided between the first test chamber 1 and the second test chamber 2. A vehicle access door 4 is provided on the side of the first test chamber 1 away from the partition door 3. An underground space 5 is provided below the first test chamber 1 and / or the second test chamber 2. A dynamometer platform 6, flush with the ground of the first test chamber 1 or the second test chamber 2, is provided below the dynamometer platform 6. A dynamometer assembly 7 is provided below the top of the first test chamber 1 and / or the second test chamber 2. A retractable lighting assembly is provided below the second test chamber 2. A movable large fan 8 is arranged inside the second test chamber 2. A pump room 9 is also provided outside the first test chamber 1 and the second test chamber 2. Industrial refrigeration equipment and industrial heating equipment are provided inside the pump room 9. Pipeline systems 10 connecting the industrial refrigeration equipment and the industrial heating equipment are respectively provided on the first test chamber 1 and the second test chamber 2.

[0029] This multifunctional dynamometer environmental test chamber, through the setup of high and low temperature systems, lighting, fans, and the dynamometer components, not only possesses the testing capabilities for high temperature, low temperature, damp heat, and temperature shock, but also has the function of dynamometer testing under simulated wind tests and solar thermal effects.

[0030] The partition door 3 divides the entire environmental test chamber into two independent test chambers, allowing for separate environmental adjustments and facilitating high and low temperature shock tests on the entire vehicle. This environmental test chamber actually comprises at least three large, independent spaces: the first test chamber 1, the second test chamber 2, and the underground space 5. Each space serves a specific purpose. The first test chamber 1 and the second test chamber 2 can accommodate vehicles and simulate various test environments. The underground space 5 is primarily used to house the dynamometer assembly, enabling the dynamometer to perform dynamometer tests on the vehicle within the upper chamber.

[0031] The first test chamber 1 is equipped with the vehicle entry and exit gate 4, which allows the vehicle to drive into the chamber on its own after opening. Then the vehicle entry and exit gate 4 is closed. The partition door 3 is opened and closed as needed for the test. It is generally used during the high and low temperature impact performance test of the vehicle, and can be in a normally open state at other times.

[0032] The high and low temperature environments of the first test chamber 1 and the second test chamber 2 are achieved through large-scale industrial refrigeration or heating equipment. The equipment itself can be commercially available, mature industrial products. Due to the large cooling capacity and low cooling temperature, the equipment is relatively large in size. A separate pump room is provided to house these devices, which are connected to the chamber via a piping system. The industrial refrigeration equipment can be similar to that used in low-temperature cold storage, while the industrial heating equipment primarily provides hot air. By employing intelligent control functions, the system automatically opens or closes corresponding working units and adjusts the operating status of each unit based on real-time conditions (such as temperature and humidity) and the working conditions of the samples within the test chamber, thereby achieving automated operation and precise control at various temperatures.

[0033] The large fan 8 is a purchased device with a blowing capacity of at least 1.5 m / s. Its function is twofold: firstly, to accelerate the air circulation in the test chamber, and secondly, to quickly blow the airflow from the high-temperature chamber (or low-temperature chamber) to the low-temperature chamber (or high-temperature chamber) during the high and low temperature impact test.

[0034] In this embodiment, the internal net space dimensions of the environmental test chamber are at least 28000×6000×6000 (D depth × W width × H height, in mm). The dimensions of the first test chamber 1 are ≥14000×6000×6000 mm, and the dimensions of the second test chamber 2 are ≥14000×6000×6000 mm. Both chambers can operate independently or in combination. During temperature shock testing, one chamber is a high-temperature chamber, and the other is a low-temperature chamber. Each chamber's temperature is adjusted to the required range. When necessary for the test, the partition door is opened, allowing the vehicle to be subjected to either a low-temperature shock or a high-temperature shock, thus testing the vehicle's performance under these rapid temperature changes.

[0035] The temperature adjustment range of both the first test chamber 1 and the second test chamber 2 is continuously adjustable between -65℃ and +75℃. Under no-load or constant conditions, the temperature fluctuation is ≤1.0℃, the temperature deviation is ≤±2.0℃, and the temperature uniformity is ≤2℃. The heating time from 5℃ to 75℃ is controlled within 4 hours (under a 60t load or static conditions), and the cooling time from 25℃ to -65℃ is controlled within 6 hours (under a 60t load or static conditions). During impact testing, the temperature transition time is completed within 60 seconds, and the temperature recovery time is 30 minutes (for a 16t vehicle load, -60℃ to +70℃). Temperature recovery conditions: high temperature exposure +70℃, low temperature exposure -60℃, exposure time ≥2 hours, 16t vehicle load.

[0036] In addition to temperature control, a humidity system is also configured to achieve functions such as cooling, heating, humidification, and dehumidification. The relative humidity range is 20% to 98% (20℃ to 60℃), with a high temperature and high humidity point (60℃, 95%RH). The humidity deviation is ±3%RH, the humidity uniformity is 3%RH, and the humidity fluctuation is ±3%RH.

[0037] Furthermore, the first test chamber 1 and the second test chamber 2 are provided with a plurality of first air inlets 11 and first air outlets 12. The first air inlets 11 and the first air outlets 12 are respectively connected to the pipeline system 10, which is erected above and to the side of the first test chamber 1 and the second test chamber 2.

[0038] Electric valves are installed in the first air inlet 11 and the first air outlet 12 respectively, which can be closed as needed. The piping system is built according to the actual building structure and size and is set outside the test chamber to avoid the piping system occupying internal space and affecting the setting of other components inside the internal space.

[0039] Furthermore, the partition door 3 is an electric insulated sliding door (usually made of color steel polyurethane sandwich panels) or an insulated roller shutter door. These doors are similar to the doors used in cold storage, and have good heat insulation and heat preservation capabilities, used to isolate temperature and prevent the temperature of the two test chambers from affecting each other.

[0040] Furthermore, the dynamometer platform 6 includes several supporting cover plates 602 erected on the underground space 5. Each of the overlapping joints of the supporting cover plates 602 is provided with a sealing strip 18. Each supporting cover plate 602 has a hollow cavity filled with heat insulation material. At least four slots are reserved between the supporting cover plates on the dynamometer platform 6.

[0041] For underground spaces, high and low temperature control is not required; it is only necessary to maintain the temperature at which the dynamometer components operate normally. Therefore, the dynamometer platform needs a certain degree of insulation to reduce heat exchange between the upper and lower spaces.

[0042] Specifically, the dynamometer platform 6 also includes multiple ground beams 601, which are supported on the underground space by brackets. Each ground beam 601 has a support platform 603 on its side (as shown in Figure 5). The two ends of the support cover plate 602 overlap the support platforms 603 of two adjacent ground beams and are fixed by connectors. Several support cover plates 602 are arranged closely along the length of the ground beams 601, leaving the slots. The sealing strips 18 are laid in the gaps between the two ends of the support cover plate 602 and the ground beams 601.

[0043] Due to the need for load-bearing and support, the support cover plate 602 is basically a high-strength metal component. In order to reduce the heat transfer capacity of the metal component and isolate the heat exchange between the underground space and the cabin, the heat insulation material is provided. The heat insulation material can be polyurethane foam material, and a heat insulation coating can also be provided on the lower surface and side surface of the support cover plate 602.

[0044] Furthermore, the dynamometer assembly 7 includes a support base 701 disposed within the underground space 5, a hub spindle 702 disposed on the support base 701, a stator assembly 703 disposed on the hub spindle 702, and a dynamometer hub 704 rotatably mounted on the hub spindle 702. The interior of the dynamometer hub 704 contains a permanent magnet 705 adapted to the stator assembly 703. The upper arc surface of the dynamometer hub 704 protrudes from the dynamometer platform 6, extending above the upper surface of the dynamometer platform. One end of the hub spindle 702 is connected to a torque arm 20, and the other end of the support base 701 is also connected to an encoder 24. A tension seat 21 is also disposed on the outer side of the support base 701, and a torque sensor 22 is disposed on the tension seat 21. One end of the torque sensor 22 is connected to a force transmission rod 23, which is connected to the torque arm 20.

[0045] This dynamometer assembly, with its structural arrangement, possesses the characteristics of heavy load, high power, and high torque. Combined with the environmental test chamber, it can conduct dynamometer tests on large trucks, lorries, or engineering vehicles. The dynamometer assembly 7 utilizes the arrangement of the dynamometer hub itself and the hub's main shaft to design a more reliable permanent magnet direct-drive structure. The dynamometer hub 704 integrates the rotor into its own structure, eliminating the need for an additional rotor assembly. Simultaneously, the hub's main shaft 702 does not rotate itself but acts as a support shaft, supporting the entire stator assembly and the dynamometer hub together. The stator assembly 703 directly drives the dynamometer hub 704 to rotate.

[0046] The torque arm 20 is generally arranged horizontally, while the force transmission rod 23 is arranged vertically. When the main shaft 702 of the dynamometer is subjected to force, torque is generated. The torque sensor 22 can sensitively capture changes in force and record data. The encoder 24 is connected to the dynamometer 704 via a pulley assembly, enabling the encoder 24 to acquire rotational data related to the dynamometer 704, such as rotational speed, angular velocity, and rotational position.

[0047] Furthermore, the lighting assembly includes several electrically retractable booms 13 disposed below the cabin roof, and a gantry 14 is connected below the electrically retractable booms 13. The gantry 14 includes multiple long rods 1401 and short rods 1402 connecting the long rods 1401. Several light sources 15 are installed below the long rods 1401.

[0048] The electric telescopic boom 13 allows for vertical adjustment of the positions of these light sources. The long boom 1401 and the short boom 1402 effectively connect these light sources 15. The light source 15 can be a halogen lamp with a spectral range of 280–3000 nm, a vertical distance of approximately 1500 mm from the reference plane, an illumination area of ​​approximately 12 m long × 4 m wide, and an adjustable height range of 1600 mm–5500 mm. This configuration simulates solar radiation (0–1120 ± 47 W / m²), and is infinitely adjustable, allowing for grouped and unit-based control.

[0049] Furthermore, several ground rails are arranged on the ground of the first test chamber 1, the second test chamber 2, and the dynamometer platform 6. The large fan 8 is installed on the ground rails by supports, and several tension piles 19 are also provided on the ground rails.

[0050] The ground track can be a connecting groove laid on the ground and ground beam. The connecting groove can be a "T" shaped groove. The tension pile 19 and the large fan 8 can be connected and fixed to the connecting groove with bolts. The tension pile 19 can be adjusted in position along the connecting groove as needed. The tension pile 19 can be connected to a steel wire rope to the vehicle under test to ensure the stability of the vehicle under test and prevent it from shaking arbitrarily.

[0051] Furthermore, the first test chamber 1 and the second test chamber 2 are also connected to a fresh air system. The inner walls of the first test chamber 1 and the second test chamber 2 are arranged with multiple second air inlets 17 and second air outlets 16, which are respectively connected to the fresh air system via pipes. The fresh air system is equipped with a large fresh air unit, which needs to meet the fresh air requirements of a 1000kW equipment test, with a fresh air volume ≥6000m³ / h. The fresh air unit can be installed outside the test chamber and connected to the second air inlets and second air outlets via pipes. In addition to ventilation, the fresh air system also has a certain auxiliary role in heat exchange; some fresh air systems are also equipped with dehumidifiers, which can also regulate humidity.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional dynamometer environmental test chamber, characterized in that, The system includes a first test chamber and a second test chamber arranged consecutively, with an openable and closable partition door between them. A vehicle access door is located on the side of the first test chamber away from the partition door. An underground space is located beneath the first and / or second test chambers, containing a dynamometer platform flush with the ground of either the first or second test chamber. A dynamometer assembly is located below the dynamometer platform. A retractable lighting assembly is located below the roof of the first and / or second test chambers. A large, movable fan is located inside the second test chamber. A pump room is also located outside the first and second test chambers, containing industrial refrigeration and industrial heating equipment. Piping systems connecting the industrial refrigeration and industrial heating equipment are respectively installed on the first and second test chambers.

2. The multi-functional environmental test chamber of claim 1, wherein, The temperature regulation range of the first test chamber and the second test chamber is -65℃ to +75℃. When conducting high and low temperature impact tests on vehicles, one of the first test chamber and the second test chamber is a high temperature chamber and the other is a low temperature chamber.

3. The multifunctional dynamometer environmental test chamber according to claim 1, characterized in that, The first test chamber and the second test chamber are provided with multiple first air inlets and first air outlets. The first air inlets and first air outlets are respectively connected to the pipeline system, which is erected above and to the side of the first test chamber and the second test chamber.

4. The multifunctional dynamometer environmental test chamber according to claim 1, characterized in that, The partition door is either an electric insulated sliding door or an insulated roller shutter door.

5. The multi-functional environmental test chamber of claim 1, wherein, The dynamometer platform includes several supporting cover plates erected on the underground space. Each supporting cover plate has a sealing strip at its overlapping joint. Each supporting cover plate has a hollow cavity filled with heat insulation material. At least four slots are reserved between the supporting cover plates on the dynamometer platform.

6. The multifunctional dynamometer environmental test chamber according to claim 1, characterized in that, The dynamometer assembly includes a support base disposed in the underground space, a hub spindle mounted on the support base, a stator assembly mounted on the hub spindle, and a dynamometer hub rotatably mounted on the hub spindle. The dynamometer hub contains a permanent magnet adapted to the stator assembly, and its upper arc surface protrudes from the dynamometer platform. One end of the hub spindle is connected to a torque arm, and the other end of the support base is also provided with an encoder connected to the dynamometer hub. A tension seat is also provided on the outer side of the support base, and a torque sensor is mounted on the tension seat. One end of the torque sensor is connected to a force transmission rod, which is connected to the torque arm.

7. The multifunctional dynamometer environmental test chamber according to claim 1, characterized in that, The lighting assembly includes several electrically operated telescopic booms installed below the cabin roof. A gantry is connected to the lower part of each electrically operated telescopic boom. The gantry includes multiple long rods and short rods connecting the long rods. Several light sources are installed below the long rods.

8. The multifunctional dynamometer environmental test chamber according to claim 1, characterized in that, Several ground rails are arranged on the ground of the first test chamber, the second test chamber, and the dynamometer platform. The large fan is installed on the ground rails by supports, and several tension piles are also provided on the ground rails.

9. The multifunctional dynamometer environmental test chamber according to claim 1, characterized in that, The first test chamber and the second test chamber are also connected to a fresh air system. The inner walls of the first test chamber and the second test chamber are provided with multiple second air inlets and second air outlets. The second air inlets and the second air outlets are respectively connected to the fresh air system through pipes.

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