Frame type three-axis oven turntable

Abstract

The application relates to a test oven turntable, and provides a frame type three-axis oven turntable which mainly comprises a base, a first rotating frame rotatably arranged on the base, a second rotating frame rotatably arranged on the first rotating frame and provided with a second rotating axis, an oven provided with a first cavity and rotatably arranged on the second rotating frame, a load frame arranged in the oven, and a third rotating axis of the oven, wherein the second rotating axis and the third rotating axis intersect at a first center point, the load frame is of a symmetrical structure, an even number of load mounting interfaces are arranged on the load frame, the load mounting interfaces are symmetrically distributed and form a second center point, and the second center point coincides with the first center point. Through the above mechanism, multiple same type products can be tested at a time, and the test efficiency is improved; when different type tests are carried out, the products are balanced through self counterweights, and additional releveling is not needed.

Description

Technical Field

[0001] This invention relates to a test chamber turntable, and more particularly to a frame-type triaxial temperature chamber turntable. Background Technology

[0002] Triaxial temperature chamber turntables are generally classified into UOT (Using the Load-On-Top) tabletop type and UOO (Using the Load-On-Frame) frame type, depending on the load mounting method. Currently, most triaxial temperature chamber turntables used domestically and internationally are UOT tabletop type, meaning the load mounting axis has only a single load mounting surface. After installing the load, a counterweight needs to be installed symmetrically to level the turntable. Because the turntable tests a wide variety of products, each with different dimensions and weights, the UOT tabletop type turntable requires re-balancing for each different product test. This increases testing time, raises costs, and wastes test space. Summary of the Invention

[0003] This invention provides a frame-type triaxial temperature chamber turntable, which solves the problem that existing temperature chamber turntables require counterweights when testing different types of products, reduces testing time, lowers testing costs, and makes efficient use of the turntable's testing space.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A frame-type triaxial temperature chamber turntable includes:

[0006] Base;

[0007] A first rotating frame is rotatably mounted on the base. The first rotating frame has a first rotating axis and rotates around the first rotating axis.

[0008] The second rotating frame is rotatably mounted on the first rotating frame. The second rotating frame is provided with a second rotating axis and rotates around the second rotating axis within the space enclosed by the first rotating frame.

[0009] An incubator is provided with a first cavity, which is rotatably mounted on a second rotating frame. A load frame is provided within the first cavity of the incubator. The incubator has a third rotating axis, and it rotates around the third rotating axis within the space enclosed by the second rotating frame. The second rotating axis and the third rotating axis intersect at a point to form a first center point. The load frame has a symmetrical structure and an even number of load mounting interfaces. The multiple load mounting interfaces are symmetrically distributed and form a second center point, which coincides with the first center point.

[0010] In some embodiments, the second rotating frame is provided with a first through hole and a second through hole on both sides. A first rotating shaft is provided in the first through hole and a second rotating shaft is provided in the second through hole. The first rotating shaft and the second rotating shaft are coaxially arranged. An angle measuring component is provided on the first rotating shaft and a motor assembly is provided at the second rotating shaft. The motor assembly includes a first drive motor and is connected to the second rotating shaft in a transmission manner.

[0011] In some embodiments, a first support bearing is provided between the first rotating shaft and the second rotating frame, and a first floating bearing is provided between the second rotating shaft and the second rotating frame.

[0012] In some embodiments, a refrigeration assembly is also included, which includes a cooler, a delivery pipe, and a first rotating air passage. The first rotating air passage is coaxially arranged with the second rotation axis and connects one end of the delivery pipe to the temperature chamber. The cold air outlet of the cooler is connected to the other end of the delivery pipe.

[0013] In some embodiments, the first rotating frame is provided with a first support that rotates synchronously, the first support is provided with a first channel, the base is provided with a second support, the first support is provided with a second rotating air passage, the second rotating air passage rotates relative to the first support and / or the second rotating air passage rotates relative to the second support, the second rotating air passage communicates with the first rotating air passage through the first support, and the second rotating air passage is coaxial with the first rotating axis.

[0014] In some embodiments, the temperature chamber is provided with a heating wire for heating the interior of the temperature chamber.

[0015] In some embodiments, a temperature compensation shim is provided at the second rotating shaft, and the temperature compensation shim is located at the end of the first floating bearing away from the temperature chamber.

[0016] In some embodiments, a first extension shaft and a second extension shaft are also included. One end of the first extension shaft is fixedly connected to the temperature chamber, and the other end of the first extension shaft is fixedly connected to the first rotating shaft. One end of the second extension shaft is fixedly connected to the temperature chamber, and a first heat insulation shaft is provided between the second extension shaft and the second rotating shaft. The first heat insulation shaft is provided at a preset length.

[0017] In some embodiments, the inner wall of the first heat-insulating shaft is provided with a heating unit, which automatically heats up when the temperature near the first rotating shaft is below 0°C.

[0018] In some embodiments, the second rotating shaft is provided with a rotatable and adjustable first adjusting nut, which can drive the temperature compensation shim to abut against the inner ring of the first floating bearing.

[0019] Compared with the prior art, the beneficial effects of this invention are:

[0020] This application establishes a first center point by intersecting the third rotation axis of the temperature chamber and the second rotation axis of the second rotation frame at a single point. The first center point is the midpoint of the line connecting the two rotation points of the second rotation frame and the two rotation points of the temperature chamber. Simultaneously, the load frame is designed as a symmetrical structure with an even number of load interfaces symmetrically distributed and forming a second center point that coincides with the first center point. This design creates a vertically and horizontally symmetrical load frame, enabling the testing of multiple products of the same type, thus improving testing efficiency. Furthermore, the aforementioned load frame structure eliminates the need for counterweights during each test, allowing for direct testing and simplifying the testing process.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an integrated frame-type triaxial temperature chamber turntable device according to the present invention;

[0023] Figure 2 This is a cross-sectional view of the internal structure of a frame-type triaxial temperature chamber turntable according to the present invention. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings. In the description of the embodiments, unless otherwise stated, the terms "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the present application must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application.

[0025] like Figure 1 and Figure 2 As shown, this invention provides a frame-type triaxial temperature chamber turntable, mainly comprising a base 1. The base 1 is used to place the turntable on a testing platform, such as a horizontal ground or a water-based platform, to maintain the horizontal placement of the frame-type triaxial temperature chamber turntable. A drive motor is installed inside the base 1, thus forming a power source to drive the first rotating frame 11 to rotate.

[0026] The first rotating frame 11 is rotatably mounted on the base 1. For example, it is mounted by the rotation of the bearing. The first rotating frame 11 is provided with a first rotating axis and rotates around the first rotating axis.

[0027] The second rotating frame 41 is rotatably mounted on the first rotating frame 11 by locking screws 416. Two first rotating support points are provided on the first rotating frame 11, and the line connecting the two first rotating support points forms a second rotating axis. The second rotating frame 41 rotates around the second rotating axis and rotates within the space enclosed by the first rotating frame 11.

[0028] The temperature chamber 46 has a first cavity to maintain a closed environment for achieving the required test temperature. The temperature chamber 46 is rotatably mounted on a second rotating frame 41. A load frame 47 is installed inside the temperature chamber 46. The temperature chamber 46 has a third rotating axis around which it can rotate. Specifically, two second rotating support points are provided on the second rotating frame 41, and the line connecting the two second rotating support points is the third rotating axis. The temperature chamber 46 rotates within the space formed by the second rotating frame 41.

[0029] It is particularly important to note that, firstly, the second and third rotation axes intersect to form a first center point, which is the midpoint between the two second rotation support points on the second rotation frame. Simultaneously, the first center point is also the midpoint between the lines connecting the two first rotation support points on the first rotation frame 11. Secondly, the load frame 47 has a symmetrical structure, with an even number of load mounting interfaces provided on it, and these interfaces are symmetrically distributed as follows: Figure 2 As shown in the vertical direction, the load frame 47 is a symmetrical structure on both sides, as in... Figure 2 The load frame 47, in the indicated direction, has the same number of load mounting interfaces on its back side. Multiple load mounting interfaces on each side of the load frame 47 are symmetrically distributed to form a second center point, which coincides with the first center point. In this embodiment, there are four load mounting interfaces, respectively located on two sides of the load frame 47, with the load mounting interfaces on each side symmetrically arranged.

[0030] By adopting the above structure, this application eliminates the need for repeated counterweighting during testing of different products; the products themselves provide the counterweight balance, simplifying the testing process. Furthermore, compared to existing technologies, it enables simultaneous testing of multiple products, improving testing efficiency.

[0031] In one embodiment, such as Figure 2 As shown, a first through hole and a second through hole are opened on both sides of the second rotating frame 41. The first through hole and the second through hole are arranged opposite to each other on two different sides of the second rotating frame 41, as shown in the figure. Figure 2 On the upper and lower sides shown, the first and second through holes are coaxially arranged. A first rotating shaft 43 is installed in the first through hole, and a second rotating shaft 411 is installed in the second through hole. Both the first and second rotating shafts 43 and 411 are connected to the temperature chamber 46, allowing the temperature chamber 46 to rotate relative to the second rotating frame 41. It is worth noting that an angle measuring component 42 is installed on the first rotating shaft 43. The angle measuring component 42 consists of a time grid sensor, an angle measuring stator base, and an angle measuring rotor base. This component measures the angular position of the turntable axis and outputs real-time measurement data as a comparison standard for the tested system or component, thereby evaluating the accuracy of the tested system or component. In the "position" and "speed" states of the turntable, it participates in the system control as a feedback loop (sending differential values ​​to the control system). Its accuracy and performance directly affect the control accuracy and dynamic performance of the turntable. A motor assembly 415 is installed at the second rotating shaft 411. The motor assembly 415 includes a first drive motor, which is connected to the second rotating shaft to provide driving force for the rotation of the temperature chamber. In this embodiment, by placing the angle measuring component 42 and the electrode component on both sides of the second rotating frame 41 respectively, the two are separated, thus separating the high voltage of the motor component 415 and the low voltage of the angle measuring component 42 from the user signal, effectively reducing electromagnetic interference and improving the testing accuracy of the turntable.

[0032] In one embodiment, a first support bearing 44 is provided between the first rotating shaft 43 and the second rotating frame 41, and a first floating bearing 412 is provided between the second rotating shaft 411 and the second rotating frame 41. By adopting the above structure, the support point span of the first rotating shaft 43 and the second rotating shaft 411 relative to the second rotating frame 41 is large, the rigidity is high, and the mechanical precision of the turntable is high.

[0033] In one embodiment, to provide a cooling environment for the simulated test in the temperature chamber 46, a cooling component is also included. This intelligent component includes a cooler 8, a delivery pipe 6, and a first rotating air duct 3. The first rotating air duct 3 and the second rotation axis are coaxially arranged to ensure relative rotation between the first rotating frame 11 and the temperature chamber 46. One end of the delivery pipe 6 is connected to the cooler 8, and the other end is connected to the first rotating air duct 3. In this embodiment, the cooler 8 is a compressor unit, similar to the principle of air conditioning cooling, and will not be elaborated further here. The cooler 8 delivers cold air through the delivery pipe 6 to the first rotating air duct 3, which is connected to the temperature chamber 46, thus delivering cold air to the temperature chamber 46 and creating a relatively cold test environment. In this embodiment, the lowest temperature of the cooling test environment is -55℃.

[0034] Furthermore, to ensure the relative stability of the rotational structure of the first rotating frame 11 relative to the base 1, a first support 111 is provided on the first rotating frame 11, and a first channel is provided within the first support 111, which communicates with the first rotating air passage 3. A second support 2 is provided on the base 1, and a second rotating air passage 5 is provided on the second support 2. The second rotating air passage 5 is coaxially arranged with the first rotation axis, and is connected to the conveying pipe 6 and the first channel within the first support 111. Thus, the conveying pipe 6 and the first rotating air passage 3 are connected through the second rotating air passage 5 and the first support 111. In this embodiment, the second rotating air passage 5 is a pipe structure, coaxially arranged with the first rotation axis. The second rotating air passage 5 rotates relative to the first support 111, or relative to the second support 2, or simultaneously relative to both the first support 111 and the second support 2. Through the above arrangement, while completing the delivery of cold air, the stability of the rotation of the first rotating frame 11 relative to the base 1 is also ensured, providing a supporting and limiting function.

[0035] In one embodiment, a heating wire is provided inside the temperature chamber 46. The heating wire is used to heat the interior of the temperature chamber 46, thereby creating the high-temperature environment required for testing. In this embodiment, the heating wire is a resistance wire structure, which can meet the high-temperature testing requirement of 85°C. The heating methods are all existing technologies and will not be described in detail here.

[0036] In one embodiment, a temperature compensation shim 413 is provided at the second rotating shaft 411, and the temperature compensation shim 413 is located at the end of the first floating bearing 412 away from the temperature chamber 46. Meanwhile, to facilitate the adjustment of the position of the temperature compensation shim 413, a rotatably mounted first adjusting nut 414 is provided on the second rotating shaft 411. The first adjusting nut 414 can drive the temperature compensation shim 413 to abut against the inner ring of the first floating bearing 412.

[0037] In this embodiment, a 2mm compression stroke can be provided by installing a temperature compensation shim 413. At room temperature, by adjusting the first adjusting nut 414, the temperature compensation shim 413 is pressed against the inner ring of the first floating bearing 412 by 1mm. This can compensate for the deformation of the load frame 47 caused by the expansion and contraction of high and low temperatures in the temperature chamber 46. It can effectively compensate for the deformation of the load frame 47 caused by temperature changes in the temperature chamber 46 from -55℃ to +85℃, and avoid bearing jamming caused by increased shaft preload due to deformation of the load frame 47. The turntable can operate smoothly in all temperature zones.

[0038] In one embodiment, the system further includes a first extension shaft 45 and a second extension shaft 49. One end of the first extension shaft 45 is fixedly connected to the temperature chamber 46, and the other end is fixedly connected to the first rotating shaft 43. One end of the second extension shaft 49 is fixedly connected to the temperature chamber 46, and a first heat-insulating shaft 48 is provided between the second extension shaft 49 and the second rotating shaft 411, with the first heat-insulating shaft 48 set at a preset length. Both ends of the load frame 47 are fixedly connected to the first extension shaft 45 and the second extension shaft 49, respectively, thereby achieving synchronous rotation of the temperature chamber 46 and the load frame 47. By providing the first heat-insulating shaft 48, the low temperature inside the temperature chamber 46 can be prevented from being transferred to the second rotating shaft 411 through the second extension shaft 49, effectively preventing condensation from forming inside the turntable at low temperatures.

[0039] Furthermore, a heating unit 410 is provided on the inner wall of the first heat-insulating shaft 48. When the temperature near the second rotating shaft 411 is below 0°C, the heating unit 410 automatically heats up. The heating unit 410 can be a resistance element or a resistance wire, etc., which is existing technology and will not be described in detail here. The main purpose is to keep the second rotating shaft 411 warm by setting up the heating unit 410, so as to prevent the shaft system from freezing at low temperatures.

[0040] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A frame-type triaxial temperature chamber turntable, characterized in that, include: Base; A first rotating frame is rotatably mounted on the base. The first rotating frame has a first rotating axis and rotates around the first rotating axis. The second rotating frame is rotatably mounted on the first rotating frame. The second rotating frame is provided with a second rotating axis and rotates around the second rotating axis within the space enclosed by the first rotating frame. An incubator has a first cavity, which is rotatably mounted on a second rotating frame. A load frame is located within the first cavity of the incubator and is fixed relative to the incubator. The incubator has a third rotating axis, and rotates around this third axis within the space enclosed by the second rotating frame. The second and third rotating axes intersect at a single point, forming a first center point. The load frame has a symmetrical structure on both sides, with an even number of load mounting interfaces on both sides. These interfaces are used for mounting similar products. Multiple load mounting interfaces on each side of the load frame are symmetrically distributed and form a second center point, which coincides with the first center point.

2. The frame-type triaxial temperature chamber turntable according to claim 1, characterized in that, The second rotating frame has a first through hole and a second through hole on both sides. A first rotating shaft is provided in the first through hole and a second rotating shaft is provided in the second through hole. The first rotating shaft and the second rotating shaft are coaxially arranged. An angle measuring component is provided on the first rotating shaft and a motor assembly is provided at the second rotating shaft. The motor assembly includes a first drive motor and is connected to the second rotating shaft in a transmission manner.

3. The frame-type triaxial temperature chamber turntable according to claim 2, characterized in that, A first support bearing is provided between the first rotating shaft and the second rotating frame, and a first floating bearing is provided between the second rotating shaft and the second rotating frame.

4. A frame-type triaxial temperature chamber turntable according to any one of claims 1-3, characterized in that, It also includes a refrigeration component, which includes a refrigerator, a delivery pipe and a first rotating air passage. The first rotating air passage is coaxial with the second rotating axis and connects one end of the delivery pipe to the temperature chamber. The cold air outlet of the refrigerator is connected to the other end of the delivery pipe.

5. A frame-type triaxial temperature chamber turntable according to claim 4, characterized in that, The first rotating frame is provided with a first support that rotates synchronously, and the first support is provided with a first channel. The base is provided with a second support, and the first support is provided with a second rotating air passage. The second rotating air passage rotates relative to the first support and / or the second rotating air passage rotates relative to the second support. The second rotating air passage is connected to the first rotating air passage through the first support, and the second rotating air passage is coaxial with the first rotating axis.

6. A frame-type triaxial temperature chamber turntable according to claim 4, characterized in that, The chamber is equipped with a heating wire, which is used for heating the interior of the chamber.

7. A frame-type triaxial temperature chamber turntable according to claim 3, characterized in that, A temperature compensation shim is provided at the second rotating shaft, and the temperature compensation shim is located at the end of the first floating bearing away from the temperature chamber.

8. A frame-type triaxial temperature chamber turntable according to claim 3, characterized in that, It also includes a first extension shaft and a second extension shaft. One end of the first extension shaft is fixedly connected to the temperature chamber, and the other end of the first extension shaft is fixedly connected to the first rotating shaft. One end of the second extension shaft is fixedly connected to the temperature chamber, and a first heat insulation shaft is provided between the second extension shaft and the second rotating shaft. The first heat insulation shaft is provided at a preset length.

9. A frame-type triaxial temperature chamber turntable according to claim 8, characterized in that, The inner wall of the first heat-insulating shaft is provided with a heating unit. When the temperature near the first rotating shaft is lower than 0°C, the heating unit automatically heats up.

10. A frame-type triaxial temperature chamber turntable according to claim 7, characterized in that, The second rotating shaft is provided with a first adjusting nut that can be rotated and adjusted. The first adjusting nut can drive the temperature compensation shim to abut against the inner ring of the first floating bearing.

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