Testing device for low-pressure test box

Abstract

The utility model relates to a testing device for a low-pressure test box. The test device is suitable for being arranged in the low-pressure test box and comprises a base frame, a test table and a test table, the rotating mechanism is fixed on the base frame and is provided with a rotating shaft extending along the vertical direction; the connecting bracket is fixed on the rotating shaft; and the test component is arranged on the connecting bracket, so that when the rotating shaft rotates, the sampling position of the test component in the low-pressure test box is adjustable. The testing device can flexibly and conveniently adjust the sampling position of the testing component according to actual requirements, so that the testing precision and the testing efficiency are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to test equipment technical field, concretely relates to the testing arrangement for low pressure test chamber. BACKGROUND

[0002] Low pressure test chamber is mainly used for simulating low pressure environment, and can simulate high temperature, low temperature environment simultaneously, and is used for environmental adaptability and reliability test of instrument, electrical product, material, spare part, equipment etc., can also be powered on to the test piece and measure electrical performance parameter. It has accurate simulation, adjustable parameter, data real -time monitoring and many advantages, therefore it is widely used in aerospace, electronics, automobile, medical treatment etc.

[0003] In order to guarantee the accuracy of experiment, it is necessary to calibrate low pressure test chamber periodically. The prior art usually utilizes external interface or sets up sensor inside to calibrate low pressure test chamber. However, the sampling position of the two ways is fixed, and it is difficult to quickly and effectively measure different positions inside low pressure test chamber, so that the precision of measured pressure, temperature and other values is limited, and the actual calibration needs cannot be met.

[0004] Therefore, the technical field needs a new technical scheme to solve the above problems. SUMMARY

[0005] In order to solve or improve the technical problem of single sampling position of the testing arrangement for low pressure test chamber in the prior art to some extent, the utility model provides a testing arrangement for low pressure test chamber. The testing arrangement is suitable for being arranged inside the low pressure test chamber and comprises: a base frame; a rotating mechanism fixed on the base frame and having a rotating shaft extending in the vertical direction; a connecting bracket fixed on the rotating shaft; and a plurality of testing components arranged on the connecting bracket, so that the sampling position of the testing components inside the low pressure test chamber is adjustable when the rotating shaft rotates.

[0006] The skilled in the art can understand that the testing arrangement for low pressure test chamber comprises a base frame, a rotating mechanism, a connecting bracket and a plurality of testing components. The base frame provides a suitable mounting space for the rotating mechanism, the connecting bracket and the plurality of testing components. The rotating mechanism is fixed on the base frame and has a rotating shaft extending in the vertical direction. The testing components are fixed on the rotating shaft through the connecting bracket. Therefore, when the rotating shaft rotates, the sampling position (especially the horizontal sampling position) of the testing components inside the low pressure test chamber can be flexibly and conveniently adjusted according to actual needs, thereby significantly improving the testing precision and efficiency.

[0007] In the test device for the low-pressure test chamber, the connecting support is provided with an extension rod parallel to the rotating shaft, and the test component is arranged on the extension rod.

[0008] In the test device for the low-pressure test chamber, the extension rod includes a first extension rod and a second extension rod arranged on two sides of the rotating shaft respectively, and the test component is arranged on each of the first extension rod and the second extension rod.

[0009] In the test device for the low-pressure test chamber, the first extension rod and the second extension rod are arranged in opposite directions, so that the distance between the test components on the first extension rod and the second extension rod can be adjusted more conveniently.

[0010] In the test device for the low-pressure test chamber, the connecting support is provided with an extension rod arranged vertically away from the rotating shaft, and the test component is arranged on the extension rod.

[0011] In the test device for the low-pressure test chamber, the extension rod includes a first extension rod and a second extension rod arranged on two sides of the rotating shaft respectively, and the test component is arranged on each of the first extension rod and the second extension rod.

[0012] In the test device for the low-pressure test chamber, the base frame includes a top plate and a bottom plate arranged opposite to each other, and a side plate arranged between the top plate and the bottom plate.

[0013] In the preferred technical scheme of the test device for the low-pressure test chamber, the rotating mechanism further comprises a rotating motor fixed on the bottom plate, and an output end of the rotating motor is connected with the rotating shaft; and / or a bearing is arranged on the top plate and can receive the rotating shaft; and / or a handle is arranged on the side plate. The rotating motor is arranged to facilitate and accurately control the rotating direction and rotating angle of the rotating shaft. In addition, the bearing arranged on the top plate can ensure that the rotating shaft rotates stably and reliably. The handle is arranged to facilitate the user to hold.

[0014] In the preferred technical scheme of the test device for the low-pressure test chamber, the test device further comprises a positioning mechanism, the positioning mechanism has a positioning plate movably arranged on the base frame, and a suction disc adapted to be adsorbed on the low-pressure test chamber is arranged on the positioning plate. The positioning mechanism is arranged to make the whole test device more stable and facilitate fixation in the interior of the low-pressure test chamber, and prevent the sampling position from deviating during the test to affect the test accuracy.

[0015] In the preferred technical scheme of the test device for the low-pressure test chamber, the positioning mechanism further comprises a positioning motor fixed on the base frame, and a positioning rod connected with the positioning motor; and a sleeve connected with the positioning rod and the positioning plate respectively, so that when the positioning rod rotates forward or reversely under the driving of the positioning motor, the sleeve can drive the positioning plate to ascend or descend relative to the base frame. Through the cooperation of the positioning motor, the positioning rod and the sleeve, the ascending and descending of the positioning plate can be conveniently controlled, so as to conveniently fix the test device in low-pressure test chambers of different specifications and improve the adaptability.

[0016] In the preferred technical scheme of the test device for the low-pressure test chamber, the positioning rod comprises a first positioning rod and a second positioning rod coaxially arranged on both sides of the positioning motor respectively, the sleeve comprises a first sleeve connected with the first positioning rod and a second sleeve connected with the second positioning rod, and the positioning plate comprises a first positioning plate connected with the first sleeve and a second positioning plate connected with the second sleeve, wherein the first positioning plate is parallel to the second positioning plate. Through the above arrangement, the low-pressure test chambers of different specifications can be flexibly matched, and by controlling the lengths of the first positioning rod and the second positioning rod, the base frame can be located at different vertical heights, so that the vertical position of the test component can be quickly adjusted.

[0017] In the preferred technical scheme of the test device for the low-pressure test chamber, the first sleeve and / or the second sleeve is provided with a guide block, and the base frame is provided with a guide groove extending in the vertical direction and capable of receiving the guide block. The guide block and the guide groove can ensure the stability of the positioning plate during the lifting process.

[0018] In the preferred technical scheme of the test device for the low-pressure test chamber, the test device further comprises a locking mechanism fixed on the base frame, which is configured to be connected with the telescopic rod to prevent the rotation of the rotating shaft, and disconnected from the telescopic rod to allow the rotation of the rotating shaft. Therefore, when the test device is in an idle state, the rotating shaft can be conveniently locked by controlling the locking mechanism to be connected with the telescopic rod, so as to prevent the test component from being damaged by colliding with other components. When the test device is in a working state, the rotating shaft can be flexibly rotated by controlling the locking mechanism to be disconnected from the telescopic rod, so as to adjust the sampling position of the test component.

[0019] In the preferred technical scheme of the test device for the low-pressure test chamber, the locking mechanism comprises a mounting frame fixed on the base frame, a screw rod arranged on the mounting frame in a lifting manner, and a clasp ring connected with the screw rod, wherein the clasp ring is capable of being connected with the telescopic rod when the screw rod is lifted, and the clasp ring is capable of being disconnected from the telescopic rod when the screw rod is lowered. By controlling the lifting or lowering of the screw rod, the connection and disconnection of the clasp ring and the telescopic rod can be conveniently achieved, and the structure is simple and easy to operate.

[0020] In the preferred technical scheme of the test device for the low-pressure test chamber, the test device further comprises a controller fixed on the base frame, which is in communication connection with the rotating mechanism, the test component and the positioning mechanism respectively. The controller can not only automatically control the rotating mechanism and the positioning mechanism to improve the degree of automation and achieve precise control, but also quickly obtain real-time data of the test component to improve the test efficiency.

[0021] In the preferred technical scheme of the test device for the low-pressure test chamber, the test device further comprises a power supply fixed on the base frame, which is in electrical connection with the rotating mechanism, the test component and the positioning mechanism respectively. The power supply can conveniently provide electrical energy for the rotating mechanism, the test component and the positioning mechanism, and avoid the influence of external power supply on the test result.

[0022] In the preferred technical scheme of the test device for the low-gas-pressure test chamber, the test device further comprises a wireless transmitter in communication connection with the controller. The wireless transmitter is arranged to transmit the data measured by the test component to an external device wirelessly, so as to avoid the influence of external wires on the test result.

[0023] In the preferred technical scheme of the test device for the low-gas-pressure test chamber, the test component comprises a gas pressure sensor and a temperature sensor, so as to enrich the types of test data. BRIEF DESCRIPTION OF DRAWINGS

[0024] The preferred embodiments of the utility model will be described below in combination with the drawings, in which:

[0025] Figure 1 is the structural schematic diagram of an embodiment of the test device for the low-gas-pressure test chamber of the utility model;

[0026] Figure 2 is the structural schematic diagram of an embodiment of the base frame and the positioning mechanism in the test device for the low-gas-pressure test chamber of the utility model;

[0027] Figure 3 is the structural schematic diagram of an embodiment of the locking mechanism in the test device for the low-gas-pressure test chamber of the utility model;

[0028] Figure 4 is the structural schematic diagram of an embodiment of the positioning mechanism in the test device for the low-gas-pressure test chamber of the utility model;

[0029] Figure 5 is the structural schematic diagram of an embodiment of the controller, the power supply and the wireless transmitter in the test device for the low-gas-pressure test chamber of the utility model.

[0030] LIST OF REFERENCE NUMERALS

[0031] 1, test device; 10, base frame; 11, bottom plate; 12, top plate; 13, side plate; 131, guide groove; 1311, first guide groove; 1312, second guide groove; 20, rotating mechanism; 21, rotating motor; 22, rotating shaft; 30, connecting bracket; 31, connecting bracket body; 32, extension rod; 321, first extension rod; 322, second extension rod; 40, telescopic rod; 41, first telescopic rod; 42, second telescopic rod; 50, test component; 51, first test component; 52, second test component; 53, third test component; 54, fourth test component; 60, locking mechanism; 61, mounting bracket; 62, screw rod; 63, knob; 64, snap ring; 70, positioning mechanism; 71, positioning motor; 72, positioning rod; 721, first positioning rod; 722, second positioning rod; 73, sleeve; 731, first sleeve; 7311, first guide block; 732, second sleeve; 7321, second guide block; 74, positioning plate; 741, first positioning plate; 742, second positioning plate; 75, suction cup; 80, handle; 90, controller; 100, power supply; 110, wireless transmitter; 120, protective shell. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present application will be described below with reference to the drawings. Those skilled in the art will understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0033] It should be noted that in the description of the present application, the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the direction or positional relationship of the terms based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

[0034] In addition, it should also be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] To solve or improve the technical problem of single sampling position of the test device for low air pressure test chamber in the prior art, the utility model provides a test device 1 for low air pressure test chamber. The test device 1 is suitable for being arranged in the interior of low air pressure test chamber (not shown in the drawing), and includes: base frame 10, rotating mechanism 20 is fixed on base frame 10 and has rotating shaft 22 extending in vertical direction, connecting support 30 is fixed on rotating shaft 22, test component 50 is arranged on connecting support 30, so that when rotating shaft 22 rotates, the sampling position of test component 50 in low air pressure test chamber is adjustable.

[0036] Figure 1 It is the structure schematic diagram of the embodiment of the test device for low air pressure test chamber of the utility model. As shown in Figure 1 In one or more embodiments, the test device 1 for low air pressure test chamber of the utility model includes base frame 10, rotating mechanism 20, connecting support 30 and test component 50 and other components. Alternatively, the test device 1 of the utility model also includes locking mechanism 60, positioning mechanism 70 or other suitable components.

[0037] Figure 2 It is the structure schematic diagram of the embodiment of base frame 10 and positioning mechanism 70 in the test device for low air pressure test chamber of the utility model. As shown in Figure 1 And Figure 2 In one or more embodiments, base frame 10 includes bottom plate 11 and top plate 12 opposite to each other, and side plate 13 between bottom plate 11 and top plate 12. In one or more embodiments, bottom plate 11 and top plate 12 are substantially rectangular. Alternatively, bottom plate 11 and top plate 12 can also adopt other suitable shapes, for example, square and the like. Based on the orientation shown in Figure 1 Side plate 13 extends vertically upward from the right side of bottom plate 11 to top plate 12, so that the whole base frame 10 has substantially U-shaped shape, simple structure and stability. Bottom plate 11, top plate 12 and side plate 13 can be processed by metal material (for example, stainless steel, aluminum alloy and the like) or other suitable material, so as to have good mechanical properties.

[0038] Continuing to refer to Figure 1 And Figure 2 In one or more embodiments, side plate 13 is opened to the right (based on Figure 1The U-shaped tube (as shown in the diagram) is used to improve the structural strength of the side plate 13 and facilitate connection with the positioning mechanism 70 of the testing device 1. In one or more embodiments, a guide groove 131 extending vertically is provided on the side plate 13 to form a sliding connection with the guide block in the positioning mechanism 70. Specifically, guide grooves 131 extending vertically are formed on the side walls of the U-shaped tube that are opposite each other in the front-rear direction. In one or more embodiments, the guide groove 131 includes a first guide groove 1311 and a second guide groove 1312 spaced apart from each other in the vertical direction. The first guide groove 1311 is matched with the first guide block 7311 in the positioning mechanism 70, while the second guide groove 1312 is matched with the second guide block 7321 in the positioning mechanism 70. Alternatively, the number and arrangement of the guide grooves 131 can be adjusted according to actual needs.

[0039] like Figure 1 As shown, the rotating mechanism 20 includes a rotating shaft 22 extending generally vertically. In one or more embodiments, the rotating mechanism 20 further includes a rotary motor 21 connected to the rotating shaft 22. The rotary motor 21 is fixed to the base plate 11 of the base frame 10 to ensure its stability. Alternatively, the rotary motor 21 may also be fixed to the top plate 12 or other suitable location. The rotary motor 21 may be, but is not limited to, a servo motor, a stepper motor, etc. The rotating shaft 22 is fixed to the output end of the rotary motor 21 so as to rotate forward or backward under the drive of the rotary motor 21. Figure 1 As shown, the rotating shaft 22 extends vertically upward from the output end of the rotary motor 21. In one or more embodiments, a bearing (not shown) is provided on the top plate 12 to receive the rotating shaft 22, ensuring that the rotating shaft 22 can rotate smoothly and reliably.

[0040] like Figure 1 As shown, the connecting bracket 30 is fixed to the rotating shaft 22 and provides suitable mounting space for the test component 50. In one or more embodiments, the connecting bracket 30 has a body extending generally in a left-right direction. The body of the connecting bracket 30 is generally fixed to the middle of the rotating shaft 22. The fixing method between the body of the connecting bracket 30 and the rotating shaft 22 is not limited, such as welding, screwing, etc. In one or more embodiments, a plurality of connecting ribs (not shown in the figure) spaced apart from each other are provided between the body of the connecting bracket 30 and the rotating shaft 22 to improve the reliability of the connection between the two.

[0041] like Figure 1As shown, in one or more embodiments, an extension rod 32, substantially perpendicular to the rotation axis 22, is provided on the connecting bracket 30. The extension rod 32 extends from the connecting bracket 30 in a direction away from the rotation axis 22. A corresponding test component 50 is provided on the extension rod 32. Through the above arrangement, a suitable distance can be formed between the test component 50 and the rotation axis 22, preventing the rotation of the rotation axis 22 from affecting the test component 50 and improving the test accuracy. In one or more embodiments, the extension rod 32 includes a first extension rod 321 and a second extension rod 322 respectively located on both sides of the rotation axis 22. Based on Figure 1 As shown, the first extension rod 321 is located to the left of the rotation axis 22, while the second extension rod 322 is located to the right of the rotation axis 22. Each of the first extension rod 321 and the second extension rod 322 is provided with a corresponding test component 50. Specifically, a first test component 51 is provided at the left end of the first extension rod 321, and a second test component 52 is provided at the right end of the second extension rod 322. This arrangement increases the number of test components 50, improving the sampling efficiency of a single test. Alternatively, the number of extension rods 32 can be set to a more or less than two, such as one, three, etc.

[0042] like Figure 1 As shown, in one or more embodiments, a telescopic rod 40, generally parallel to the rotation axis 22, is further provided on the main body of the connecting bracket 30. A corresponding test component 50 is provided on the telescopic rod 40. The telescopic rod 40 allows for further adjustment of the vertical height of the corresponding test component 50. In one or more embodiments, the telescopic rod 40 includes a first telescopic rod 41 and a second telescopic rod 42 located on both sides of the rotation axis 22. Based on... Figure 1 As shown, the first telescopic rod 41 is located to the left of the rotation axis 22, while the second telescopic rod 42 is located to the right of the rotation axis 22. A corresponding test component 50 is provided on each of the first telescopic rod 41 and the second telescopic rod 42. Specifically, a third test component 53 is provided to the left of the first telescopic rod 41, and a fourth test component 54 is provided to the right of the second telescopic rod 42. This arrangement increases the number of test components 50, improving the sampling efficiency of a single test. In one or more embodiments, the extension directions of the first telescopic rod 41 and the second telescopic rod 42 are opposite. For example, the extension direction of the first telescopic rod 41 is vertically downward, and the extension direction of the second telescopic rod 42 is also vertically downward. This allows for faster and more convenient adjustment of the distance between the third test component 53 and the fourth test component 54, improving testing efficiency. It should be noted that the third test component 53 and the first telescopic rod 41, and the fourth test component 54 and the second telescopic rod 42, can be connected by suitable connecting rods or connectors. Alternatively, the number of telescopic poles 40 can also be set to other suitable numbers, more or less than 2, such as 1, 3, etc.

[0043] As shown in Figure 1 , the test component 50 is connected with the rotating shaft 22 through the connecting bracket 30. In this way, when the rotating shaft 22 rotates forward or reversely under the driving of the rotating motor 21, the test component 50 will rotate together with the rotating shaft 22 under the driving of the connecting bracket 30, so as to conveniently and accurately change the sampling position of the test component 50 in the low-pressure test chamber. In one or more embodiments, the test component 50 comprises a pressure sensor and a temperature sensor to enrich the types of tests. Alternatively, the test component 50 can also comprise other suitable test elements, such as a humidity sensor, etc.

[0044] As shown in Figure 3 , in one or more embodiments, the utility model test device 1 further comprises a locking mechanism 60 fixed on the base frame 10. The locking mechanism 60 is configured to be connectable with the telescopic rod 40 (which can be the first telescopic rod 41 or the second telescopic rod 42) fixed on the connecting bracket 30 to prevent the rotating shaft 22 from rotating. In addition, the locking mechanism 60 is configured to be disconnectable from the telescopic rod 40 (which can be the first telescopic rod 41 or the second telescopic rod 42) to allow the rotating shaft 22 to rotate. Specifically, when the test device 1 is in an idle state, by controlling the locking mechanism 60 to be connected with the telescopic rod 40, the rotating shaft 22 can be conveniently locked to avoid rotating, so as to prevent the test component 50 from colliding with other components and being damaged. When the test device 1 is in a working state, by controlling the locking mechanism 60 to be disconnected from the telescopic rod 40, the rotating shaft 22 can be flexibly rotated to adjust the sampling position of the test component 50.

[0045] Figure 3 is a structural schematic view of an embodiment of the locking mechanism in the test device for the low-pressure test chamber of the utility model. As shown in Figure 1 , in one or more embodiments, the locking mechanism 60 comprises a mounting frame 61, a screw rod 62 and a snap ring 64, etc. Among them, the mounting frame 61 is fixed on the base frame 10, so as to provide a suitable mounting space for the screw rod 62 and the snap ring 64, etc. Specifically, the mounting frame 61 is fixed on the bottom plate 11 of the base frame 10. A threaded hole (not marked in the figure) is formed on the mounting frame 61, so that the screw rod 62 can be arranged on the mounting frame 61 in a threaded hole liftable manner. The snap ring 64 is connected with the screw rod 62. Specifically, the snap ring 64 is fixed on the end of the screw rod 62 away from the mounting frame 61 (based on the orientation shown in Figure 1 , i.e. the upper end). The fixing mode between the snap ring 64 and the screw rod 62 is not limited, such as welding, screwing, etc. In one or more embodiments, the locking mechanism 60 further comprises a handle 63 arranged on the end of the screw rod 62 away from the snap ring 64 (based on the orientation shown in Figure 1The knob 63 shown in the orientation, i.e. the lower end) to conveniently control the screw rod 62 up or down. When the screw rod 62 rises, the clamping ring 64 moves towards the direction close to the telescopic rod 40, thereby forming a clamping fit with the telescopic rod 40. Correspondingly, when the screw rod 62 is lowered, the clamping ring 64 moves away from the telescopic rod 40, thereby disengaging from the telescopic rod 40.

[0046] As Figure 2 and Figure 4 shown, in one or more embodiments, the utility model test device 1 includes positioning mechanism 70. The positioning mechanism 70 has a positioning plate 74 movably arranged on the base frame 10, and is provided with a suction disc 75 suitable for being adsorbed on the low-pressure test chamber on the positioning plate 74. By adjusting the position of the positioning plate 74, it can be conveniently matched with low-pressure test chambers of different specifications. Further, by providing the suction disc 75 on the positioning plate 74, the positioning plate 74 can be conveniently and stably fixed inside the low-pressure test chamber, preventing the test component 50 from deviating during testing and affecting the test accuracy.

[0047] Figure 2 is a structural schematic view of an embodiment of the positioning mechanism 70 in the test device 1 for the low-pressure test chamber of the utility model. As Figure 4 and Figure 2 shown, in one or more embodiments, the positioning mechanism 70 further includes positioning motor 71, positioning rod 72 and sleeve 73 and other components. Among them, the positioning motor 71 is fixed on the base frame 10. Specifically, the positioning motor 71 is fixed on the middle part of the side plate 13. The positioning motor 71 can be but not limited to servo motor, stepper motor, etc. The positioning rod 72 is connected with the positioning motor 71, and the sleeve 73 is connected with the positioning rod 72 and the positioning plate 74 respectively. When the positioning rod 72 rotates forward or reversely under the drive of the positioning motor 71, the sleeve 73 can drive the positioning plate 74 to rise or fall relative to the base frame 10.

[0048] Continuing to refer to Figure 4 and Figure 2 , in one or more embodiments, the positioning rod 72 includes first positioning rod 721 and second positioning rod 722 coaxially located on both sides of the positioning motor 71 respectively. Based on Figure 4 and Figure 4In the shown orientation, the first positioning rod 721 is located at the upper side of the positioning motor 71, and the second positioning rod 722 is located at the lower side of the positioning motor 71. The sleeve 73 includes a first sleeve 731 connected with the first positioning rod 721 and a second sleeve 732 connected with the second positioning rod 722 respectively. Correspondingly, the positioning plate 74 includes a first positioning plate 741 connected with the first sleeve 731 and a second positioning plate 742 connected with the second sleeve 732 respectively. Among them, the first positioning plate 741 is substantially parallel to the second positioning plate 742. Through the above-mentioned setting, the lifting of the first positioning plate 741 and the second positioning plate 742 can be controlled by one motor at the same time, which improves the control efficiency and reduces the component cost. Figure 1 In the shown orientation, a plurality of suction cups 75 are arranged at the top of the first positioning plate 741 and spaced from each other, so as to be adsorbed on the top wall (not shown in the figure) of the low-pressure test chamber; a plurality of suction cups 75 are arranged at the bottom of the second positioning plate 742 and spaced from each other, so as to be adsorbed on the bottom wall (not shown in the figure) of the low-pressure test chamber. In one or more embodiments, a guide block (i.e. a first guide block 7311) is arranged on the first sleeve 731, and a guide groove 131 (i.e. a first guide groove 1311) extending in the vertical direction and capable of receiving the corresponding guide block is arranged on the side wall. In one or more embodiments, a guide block (i.e. a second guide block 7321) is arranged on the second sleeve 732, and a guide groove 131 (i.e. a second guide groove 1312) extending in the vertical direction and capable of receiving the corresponding guide block is arranged on the side wall. The arrangement of the guide block and the guide groove 131 can make the sleeve 73 more stable during lifting, thereby ensuring that the positioning plate 74 can be smoothly lifted or lowered.

[0049] As shown in Figure 2 and Figure 1 In one or more embodiments, the utility model test device 1 further includes a handle 80. The handle 80 has a substantially U-shaped structure. Two handles 80 are arranged on the side plate 13 opposite to each other. Based on Figure 5 In the shown orientation, the two handles 80 are arranged on the front side and the rear side of the side plate 13 respectively. The arrangement of the handle 80 facilitates the user to hold, thereby conveniently moving the position of the test device 1. It should be pointed out that the shape, number and arrangement position of the handle 80 can also be adjusted according to actual needs.

[0050] Figure 5 is a structural schematic view of an embodiment of the controller, power supply and wireless transmitter in the test device for the low-pressure test chamber of the utility model. As shown in Figure 5As shown, in one or more embodiments, the utility model test device 1 further includes a controller 90 fixed on the base frame 10. The controller 90 can be fixed on the side plate 13 of the base frame 10, or other suitable positions (such as the top plate 12 or the bottom plate 11). The controller 90 is in communication connection with the rotating mechanism 20, the test component 50 and the positioning mechanism 70 respectively. Through the controller 90, the rotating motor 21 in the rotating mechanism 20 and the positioning motor 71 in the positioning mechanism 70 can be conveniently controlled, the degree of automation is improved, and precise control is realized. In addition, the controller 90 can also quickly obtain the real-time data of the test component 50, thereby improving the test efficiency.

[0051] Continuing to refer to Figure 5 In one or more embodiments, the utility model test device 1 further includes a power supply 100 fixed on the base frame 10. The power supply 100 can be fixed on the side plate 13 of the base frame 10, or other suitable positions (such as the top plate 12 or the bottom plate 11). The power supply 100 is in electrical connection with the rotating mechanism 20, the test component 50 and the positioning mechanism 70 respectively. The type of power supply 100 is not limited, such as lithium battery, lead-acid battery, etc. The built-in power supply 100 can conveniently provide power for the rotating mechanism 20, the test component 50 and the positioning mechanism 70, etc., avoiding the influence of external power supply 100 on the test results.

[0052] Continuing to refer to Figure 1 In one or more embodiments, the utility model test device 1 further includes a wireless transmitter 110 fixed on the base frame 10. The wireless transmitter 110 can be fixed on the side plate 13 of the base frame 10, or other suitable positions (such as the top plate 12 or the bottom plate 11). The type of wireless transmitter 110 is not limited, such as Zigbee wireless transmitter 110, etc. The wireless transmitter 110 is in communication connection with the controller 90, so that the data measured by the test component 50 can be transmitted to external equipment (such as smart phone, tablet computer, etc.) through the controller 90, avoiding the influence of external wires on the test results.

[0053] Continuing to refer to Figure 5 And ​ In one or more embodiments, the utility model test device 1 further includes a protective shell 120. The protective shell 120 is fixed on the base frame 10 (such as the side plate 13), and the protective shell 120 and the base frame 10 form a containing space for installing the controller 90, the power supply 100, the wireless transmitter 110, etc., thereby protecting them, avoiding damage to electrical components caused by low pressure, low temperature, high temperature, etc. environment formed by the low pressure test chamber during testing.

[0054] The technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but the person skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. The person skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the utility model, and the technical schemes after the changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A testing device (1) for a low-pressure test chamber, characterized in that The test device (1) is suitable for being arranged inside the low-pressure test chamber, and comprises: a base frame (10); a rotating mechanism (20) fixed on the base frame (10) and having a rotating shaft (22) extending in a vertical direction; a connecting bracket (30) fixed on the rotating shaft (22); a test component (50) arranged on the connecting bracket (30) so that the sampling position of the test component (50) in the low-pressure test chamber is adjustable when the rotating shaft (22) rotates.

2. The testing device (1) for a low-pressure test chamber according to claim 1, characterized in that, A telescopic rod (40) parallel to the rotating shaft (22) is arranged on the connecting bracket (30), and a corresponding test component (50) is arranged on the telescopic rod (40).

3. Test device (1) for a low-pressure test chamber according to claim 2, characterized in that The telescopic rod (40) comprises a first telescopic rod (41) and a second telescopic rod (42) respectively located on two sides of the rotating shaft (22), and a corresponding test component (50) is arranged on each of the first telescopic rod (41) and the second telescopic rod (42).

4. The testing device (1) for a low-pressure test chamber according to claim 3, characterized in that The extension directions of the first telescopic rod (41) and the second telescopic rod (42) are opposite.

5. Test device (1) for a low-pressure test chamber according to any one of claims 1 to 4, characterized in that An extension rod (32) vertically away from the rotating shaft (22) is arranged on the connecting bracket (30), and a corresponding test component (50) is arranged on the extension rod (32).

6. The testing device (1) for a low-pressure test chamber according to claim 5, characterized in that The extension rod (32) comprises a first extension rod (321) and a second extension rod (322) respectively located on two sides of the rotating shaft (22), and a corresponding test component (50) is arranged on each of the first extension rod (321) and the second extension rod (322).

7. The testing device (1) for a low-pressure test chamber according to claim 1, characterized in that, The base frame (10) comprises a top plate (12) and a bottom plate (11) opposite to each other, and a side plate (13) between the top plate (12) and the bottom plate (11).

8. The test device (1) for a low-pressure test chamber according to claim 7, characterized in that: the rotating mechanism (20) further comprises a rotating motor (21) fixed on the bottom plate (11), and an output end of the rotating motor (21) is connected with the rotating shaft (22); and / or a bearing (23) receiving the rotating shaft (22) is arranged on the top plate (12); and / or a handle (80) is arranged on the side plate (13).

9. The testing device (1) for a low-pressure test chamber according to claim 1, characterized in that, The test device (1) further comprises a positioning mechanism (70) having a positioning plate (74) movably arranged on the base frame (10), and a suction disc (75) suitable for being adsorbed on the low-pressure test chamber is arranged on the positioning plate (74).

10. The testing device (1) for a low-pressure test chamber according to claim 9, characterized in that The positioning mechanism (70) further comprises: a positioning motor (71) fixed on the base frame (10); and a positioning rod (72) connected with the positioning motor (71); A sleeve (73) is connected with the positioning rod (72) and the positioning plate (74) respectively, so that when the positioning rod (72) rotates forward or reversely under the driving of the positioning motor (71), the sleeve (73) can drive the positioning plate (74) to ascend or descend relative to the base frame (10).

11. Test device (1) for a low-pressure test chamber according to claim 10, characterized in that The positioning rod (72) comprises a first positioning rod (721) and a second positioning rod (722) which are coaxial and located on both sides of the positioning motor (71) respectively, the sleeve (73) comprises a first sleeve (731) connected with the first positioning rod (721) and a second sleeve (732) connected with the second positioning rod (722) respectively, and the positioning plate (74) comprises a first positioning plate (741) connected with the first sleeve (731) and a second positioning plate (742) connected with the second sleeve (732) respectively, The first positioning plate (741) is parallel to the second positioning plate (742).

12. The testing device (1) for a low-pressure test chamber according to claim 11, characterized in that A guide block (7311, 7321) is arranged on the first sleeve (731) and / or the second sleeve (732), and a guide groove (131) extending in the vertical direction and capable of receiving the guide block is arranged on the base frame (10).

13. The testing device (1) for a low-pressure test chamber according to claim 2, characterized in that, The test device (1) further comprises: A locking mechanism (60) is fixed on the base frame (10), the locking mechanism (60) is configured to be connected with the telescopic rod (40) to prevent the rotation of the rotating shaft (22), and is configured to be disconnected with the telescopic rod (40) to allow the rotation of the rotating shaft (22).

14. The testing device (1) for a low-pressure test chamber according to claim 13, characterized in that The locking mechanism (60) comprises: A mounting frame (61) is fixed on the base frame (10); A screw rod (62) is arranged on the mounting frame (61) in a lifting manner; and A clamping ring (64) is connected with the screw rod (62), When the screw rod (62) ascends, the clamping ring (64) can be clamped with the telescopic rod (40); When the screw rod (62) descends, the clamping ring (64) can be disconnected with the telescopic rod (40).

15. The testing device (1) for a low-pressure test chamber according to claim 9, characterized in that, The test device (1) further comprises a controller (90) fixed on the base frame (10), and the controller (90) is in communication connection with the rotating mechanism (20), the test component (50) and the positioning mechanism (70) respectively.

16. The testing device (1) for a low-pressure test chamber according to claim 15, characterized in that The test device (1) further comprises a power supply (100) fixed on the base frame (10), and the power supply (100) is in electrical connection with the rotating mechanism (20), the test component (50) and the positioning mechanism (70) respectively.

17. The testing device (1) for a low-pressure test chamber according to claim 15, characterized in that The test device (1) further comprises a wireless transmitter (110) in communication connection with the controller (90).

18. The testing device (1) for a low-pressure test chamber according to claim 1, characterized in that, The test component (50) comprises an air pressure sensor and a temperature sensor.

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