Loading device for multi-dimensional force calibration

Abstract

The utility model provides a loading device for multi-dimensional force calibration, and relates to the field of multi-dimensional force calibration loading devices. The temperature sensor is arranged on the back face of an inner cavity of the outer cover and used for monitoring the temperature of the inner cavity of the outer cover, the semiconductor chilling plate is arranged at the upper end of an inner cavity of the base, the top of the semiconductor chilling plate extends to the inner cavity of the outer cover and used for cooling the inner cavity of the outer cover, and the centrifugal fan is fixedly connected to the bottom of the inner cavity of the base. The connecting cylinder is communicated with the air outlet end of the centrifugal fan; the closed door is matched with the outer cover to be isolated from the external environment, the influence caused by the influence of the external environment is prevented, meanwhile, the temperature control unit monitors the temperature of the inner cavity of the outer cover in real time through the temperature sensor, and the semiconductor chilling plate or the electric heating pipe is started to operate according to needs to adjust the temperature. In the temperature adjusting process, airflow flowing is promoted through the centrifugal fan, it is ensured that the temperature is evenly distributed, and the influence of temperature changes on the calibration result is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of multi -dimensional force calibration loading device, concretely is a kind of loading device for multi -dimensional force calibration. BACKGROUND

[0002] Multi -dimensional force calibration loading device is a kind of special equipment for accurately calibrating multi -dimensional force sensor, the device can simulate various mechanical conditions in actual working environment, and multi -dimensional loading test is carried out to sensor, to ensure the accuracy and reliability of its measurement result, it has important significance for improving the mechanical property test level of product and ensuring product quality.

[0003] Multi -dimensional force calibration loading device when in use, first, the multi -dimensional force sensor to be calibrated is installed on calibration tooling, and ensure connection firm, then, according to calibration demand setting loading parameter, by starting loading mechanism, according to the parameter set to sensor loading test, in loading process, by collecting the output signal of sensor, and the data collected and preset data are handled and analyzed, to calculate the measurement error and calibration parameter of sensor, finally, according to the analysis result, sensor is calibrated and adjusted, to improve its measurement accuracy;However, in actual use, since traditional loading device is usually exposed to external environment and used, thus in calibration loading process, it is easily influenced by external environment temperature change, temperature change can cause calibrated sensor to appear thermal expansion or shrink, to introduce error, difficult to ensure the precision of calibration result.

[0004] Therefore, the utility model provides a kind of loading device for multi -dimensional force calibration to solve above-mentioned problems. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides the following technical scheme:

[0006] A kind of loading device for multi -dimensional force calibration, comprising

[0007] Calibration loading unit, including outer cover, first air cylinder being fixedly connected to the top of the inner chamber of the outer cover, second air cylinder being fixedly connected to the back of the inner chamber of the outer cover, positioning assembly being arranged at the bottom of the inner chamber of the outer cover, multi -dimensional force sensor being arranged in the inner chamber of the positioning assembly, calibration cap being connected to the top of the multi -dimensional force sensor, closed door being movably connected to the front of the outer cover by hinge, and microcontroller being fixedly connected to the front of the closed door;

[0008] The temperature control unit comprises a base, a temperature sensor arranged on the back of the inner cavity of the outer cover and used for monitoring the temperature of the inner cavity of the outer cover, a semiconductor refrigerating sheet arranged at the upper end of the inner cavity of the base and extending to the top of the inner cavity of the outer cover and used for cooling the inner cavity of the outer cover, a centrifugal fan fixedly connected to the bottom of the inner cavity of the base, a connecting cylinder communicated with the air outlet end of the centrifugal fan, an electric heating pipe arranged in the inner cavity of the connecting cylinder and used for heating air flow, and a connecting pipe communicated with the back of the connecting cylinder and having the other end communicated with the inner cavity of the outer cover.

[0009] Further, the front surface of the sealing door is provided with a visual window, one side of the outer cover is communicated with a breather pipe, and the surface of the breather pipe is provided with a solenoid valve.

[0010] Further, the positioning assembly comprises a limiting seat, screw rods screw-connected to the front surface and the back surface of the limiting seat, and an anti-skid pad movably connected to one end of the screw rod through a bearing, the multi-dimensional force sensor is located in the inner cavity of the limiting seat, and one side of the anti-skid pad is in contact with the multi-dimensional force sensor.

[0011] Further, the front surface of the base is provided with a louver, the inner cavity of the louver is fixedly connected with an intercepting net, both sides of the bottom of the inner cavity of the base are provided with through grooves, the inner cavities of the through grooves are provided with heat dissipation fans, the bottom of the inner cavity of the through groove is fixedly connected with a filter screen, and the output end of the microcontroller is connected with the input end of the heat dissipation fan.

[0012] Further, the front surface of the microcontroller is provided with a touch display screen, and the microcontroller and the touch display screen are bidirectionally connected, the output ends of the multi-dimensional force sensor and the temperature sensor are connected with the input end of the microcontroller, and the output end of the microcontroller is connected with the input ends of the centrifugal fan, the electric heating pipe, the semiconductor refrigerating sheet, the first air cylinder and the second air cylinder respectively.

[0013] Beneficial effects, the utility model has the following beneficial effects:

[0014] The first air cylinder and the second air cylinder in the calibration loading unit can accurately control the size and direction of the loading force, the positioning assembly is cooperated to position the multi-dimensional force sensor, the loading force is accurately applied to the multi-dimensional force sensor, high-precision calibration is realized, the sealing door is cooperated with the outer cover to be isolated from the external environment, the influence caused by the external environment is prevented, meanwhile, the temperature control unit monitors the temperature of the inner cavity of the outer cover in real time through the temperature sensor, and the semiconductor refrigerating sheet or the electric heating pipe is started to operate according to the need to adjust the temperature, the air flow is promoted through the centrifugal fan in the temperature adjusting process, the temperature is uniformly distributed, and the influence of temperature change on the calibration result is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the outer cover of this utility model;

[0017] Figure 3 This is a schematic diagram of the base structure of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the connecting cylinder of this utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure between the positioning component and the multi-dimensional force sensor of this utility model;

[0020] Figure 6 This is a schematic diagram of the system principle of this utility model.

[0021] In the picture:

[0022] 100. Calibration loading unit; 110. Outer cover; 111. Vent pipe; 120. First cylinder; 130. Second cylinder; 140. Positioning assembly; 141. Limit seat; 142. Screw; 150. Multi-dimensional force sensor; 160. Calibration cap; 170. Sealing door; 180. Microcontroller; 200. Temperature control unit; 210. Base; 211. Louver; 220. Temperature sensor; 230. Semiconductor cooling chip; 240. Cooling fan; 250. Centrifugal fan; 260. Connecting cylinder; 270. Electric heating element; 280. Connecting pipe. Detailed Implementation

[0023] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0024] Example 1

[0025] like Figures 1-6 As shown, this is the first embodiment of the present invention, which provides a loading device for multidimensional force calibration, including...

[0026] The calibration loading unit 100 comprises an outer cover 110, a first air cylinder 120 fixedly connected to the top of the inner cavity of the outer cover 110, a second air cylinder 130 fixedly connected to the back of the inner cavity of the outer cover 110, a positioning assembly 140 arranged at the bottom of the inner cavity of the outer cover 110, a multi-dimensional force sensor 150 arranged in the inner cavity of the positioning assembly 140, a calibration cap 160 connected to the top of the multi-dimensional force sensor 150, a closing door 170 hingedly connected to the front of the outer cover 110, and a microcontroller 180 fixedly connected to the front of the closing door 170.

[0027] The temperature control unit 200 comprises a base 210, a temperature sensor 220 arranged on the back of the inner cavity of the outer cover 110 and used for monitoring the temperature of the inner cavity of the outer cover 110, a semiconductor refrigeration fin 230 arranged at the upper end of the inner cavity of the base 210 and extending to the top of the inner cavity of the outer cover 110 and used for cooling the inner cavity of the outer cover 110, a centrifugal fan 250 fixedly connected to the bottom of the inner cavity of the base 210, a connecting cylinder 260 communicated with the air outlet end of the centrifugal fan 250, an electric heating pipe 270 arranged in the inner cavity of the connecting cylinder 260 and used for heating the airflow, and a connecting pipe 280 communicated with the back of the connecting cylinder 260 and communicated with the inner cavity of the outer cover 110 at the other end.

[0028] As shown in Figures 1-6 , the first air cylinder 120 and the second air cylinder 130 in the calibration loading unit 100 can accurately control the size and direction of the loading force, and the positioning assembly 140 is used for positioning the multi-dimensional force sensor 150, so as to ensure that the loading force accurately acts on the multi-dimensional force sensor 150. The microcontroller 180 adopts the model STM32F407VGT6, so that the microcontroller 180 can receive the sensing data of the multi-dimensional force sensor 150 and analyze and process the preset data, so as to calculate the measurement error and the calibration parameter, thereby realizing high-precision calibration. The closing door 170 cooperates with the outer cover 110 to be isolated from the external environment, so as to prevent the influence caused by the external environment. At the same time, the temperature control unit 200 monitors the temperature of the inner cavity of the outer cover 110 in real time through the temperature sensor 220, the temperature sensor 220 adopts the model DS18B20 digital temperature sensor, the microcontroller 180 can receive the temperature data and start the semiconductor refrigeration fin 230 or the electric heating pipe 270 to operate according to the monitored temperature data to adjust the temperature, and the semiconductor refrigeration fin 230 adopts the model TEC1-12706 semiconductor refrigeration fin. In the temperature adjustment process, the centrifugal fan 250 is used to promote the airflow to flow, so as to ensure that the temperature is uniformly distributed, and the influence of temperature change on the calibration result is effectively reduced.

[0029] Embodiment 2

[0030] Referring to Figure 1 , 5 and 6, this is a second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0031] The front of the closing door 170 is provided with a visible window, one side of the shell 110 is communicated with a breather pipe 111, and the surface of the breather pipe 111 is provided with a solenoid valve, and the output end of the microcontroller 180 is connected with the input end of the solenoid valve.

[0032] The positioning assembly 140 comprises a limiting seat 141, screw rods 142 which are screw-connected to the front and back of the limiting seat 141, and anti-skid pads which are movably connected to one end of the screw rods 142 through bearings, and the multi-dimensional force sensor 150 is located in the inner cavity of the limiting seat 141, and one side of the anti-skid pad is in contact with the multi-dimensional force sensor 150.

[0033] As shown in FIGS. Figure 1 , 5 and 6, by providing the visible window on the closing door 170, the working state inside the calibration loading unit 100 can be directly observed by the operator, so that the convenience and accuracy of operation are improved, by providing the breather pipe 111 and the solenoid valve, the gas exchange in the inner cavity of the shell 110 is facilitated, the air flow circulation is realized, and the temperature adjustment operation is facilitated, by providing the space for the multi-dimensional force sensor 150 through the limiting seat 141, the preliminary limiting is realized, by adjusting the extension length of the screw rod 142 and the contact pressure of the anti-skid pad, the positioning is realized, and by the cooperation of the screw rod 142 and the anti-skid pad, the stable fixation of the multi-dimensional force sensor 150 is ensured, and the damage or deformation of the multi-dimensional force sensor 150 caused by excessive clamping is prevented.

[0034] Embodiment 3

[0035] Referring to Figures 2-6 , this is the third embodiment of the utility model, and the embodiment is based on the previous two embodiments.

[0036] In the embodiment, the front of the base 210 is provided with a louver 211, the inner cavity of the louver 211 is fixedly connected with an intercepting net, the inner cavity of the base 210 is provided with a through slot on both sides of the bottom, the inner cavity of the through slot is provided with a cooling fan 240, and the inner cavity of the through slot is fixedly connected with a filter screen at the bottom, and the output end of the microcontroller 180 is connected with the input end of the cooling fan 240.

[0037] The front of the microcontroller 180 is provided with a touch display screen, the microcontroller 180 and the touch display screen are bidirectionally connected, the output ends of the multi-dimensional force sensor 150 and the temperature sensor 220 are connected with the input end of the microcontroller 180, and the output end of the microcontroller 180 is connected with the input ends of the centrifugal fan 250, the electric heating tube 270, the semiconductor refrigeration piece 230, the first air cylinder 120 and the second air cylinder 130.

[0038] As shown in FIGS. Figures 2-6As shown, by opening the shutter 211 on the base 210 and setting the interception net, the airflow of the centrifugal fan 250 during operation can be ensured to be smooth, and external impurities can be prevented from entering. The one side of the semiconductor refrigeration piece 230 can be quickly cooled by the cooling fan 240, the refrigeration effect is improved, and the filter screen can filter out external impurities and dust when the cooling fan 240 is operating. By setting a touch display screen on the microcontroller 180, an intuitive and easy-to-use operation interface is provided, which is convenient for operators to set calibration parameters, monitor the calibration process and view the calibration results. The output ends of the multi-dimensional force sensor 150 and the temperature sensor 220 are connected to the input end of the microcontroller 180, so as to realize real-time acquisition and processing of data, thereby ensuring the accuracy and timeliness of the calibration. The output end of the microcontroller 180 is connected to the input ends of the centrifugal fan 250, the electric heating tube 270, the semiconductor refrigeration piece 230, the first air cylinder 120 and the second air cylinder 130, so as to realize intelligent control of these components and improve the automation level of the calibration process.

[0039] In use, first, the multi-dimensional force sensor 150 to be calibrated is placed in the inner cavity of the limiting seat 141, and the calibration cap 160 is connected to the top of the multi-dimensional force sensor 150, then the anti-skid pad is brought into contact with the multi-dimensional force sensor 150 in the rotating process of the rotating screw rod 142, thereby realizing the positioning and clamping of the multi-dimensional force sensor 150, ensuring the stability of the later calibration loading, then the operator can set the calibration parameters through the touch display screen, including the size and direction of the loading force and the target temperature during calibration loading, and the touch display screen adopts a TFT LCD touch screen, then the microcontroller 180 controls the first cylinder 120 and the second cylinder 130 to load the multi-dimensional force sensor 150 according to the set parameters, during the loading process, the multi-dimensional force sensor 150 converts the stress signal into an electric signal and transmits it to the microcontroller 180 for processing, the microcontroller 180 analyzes and processes the signal data of the multi-dimensional force sensor 150 received and the preset data, so as to calculate the measurement error and the calibration parameter, so as to facilitate the calibration and adjustment of the multi-dimensional force sensor 150 according to the calibration parameter, and during the loading process of the multi-dimensional force sensor 150, the temperature sensor 220 can monitor the temperature in the inner cavity of the housing 110 in real time and feed back to the microcontroller 180, and the microcontroller 180 controls the operation of the semiconductor refrigerating fin 230 or the electric heating pipe 270 according to the temperature signal and the preset temperature range, if the temperature is too high, the semiconductor refrigerating fin 230 cools the inside of the housing 110, and the centrifugal fan 250 cooperates with the connecting cylinder 260 and the connecting pipe 280 to promote the internal air flow, further ensuring uniform temperature distribution and improving cooling quality, on the contrary, if the temperature is too low, the electric heating pipe 270 operates, the centrifugal fan 250 sucks the airflow and transmits it to the inner cavity of the connecting cylinder 260, the airflow is heated by the electric heating pipe 270, and the heated airflow is transmitted to the inner cavity of the housing 110 through the connecting pipe 280, thereby uniformly distributing the hot airflow in the housing 110, realizing the heating operation, so that the inside of the housing 110 is always in a suitable temperature environment, thereby reducing the influence of temperature change on the calibration result.

[0040] The standard parts used in the present application can be purchased from the market, and can be customized according to the description and drawings, and the specific connection mode of each part adopts the conventional bolt, rivet, welding and other conventional means in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, the control mode is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming by the person skilled in the art, which belongs to the common knowledge in the art, and the present application is mainly used to protect the mechanical device, so the control mode and circuit connection are not explained in detail.

[0041] Although the utility model has disclosed as above with preferable embodiments, it is not used to limit the utility model. Those skilled in the art to which the utility model belongs can make various changes and decorations without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model is accurate according to the definition of the claims.

Claims

1. A loading device for multi-dimensional force calibration, characterized by: The utility model relates to a calibration loading unit (100) including an outer cover (110), a first cylinder (120) fixedly connected to the top of the inner cavity of the outer cover (110), a second cylinder (130) fixedly connected to the back of the inner cavity of the outer cover (110), a positioning assembly (140) arranged at the bottom of the inner cavity of the outer cover (110), a multidimensional force sensor (150) arranged in the inner cavity of the positioning assembly (140), a calibration cap (160) connected to the top of the multidimensional force sensor (150), a closed door (170) hingedly connected to the front of the outer cover (110), and a microcontroller (180) fixedly connected to the front of the closed door (170). A temperature control unit (200) including a base (210), a temperature sensor (220) arranged on the back of the inner cavity of the outer cover (110) and used for monitoring the temperature of the inner cavity of the outer cover (110), a semiconductor refrigeration sheet (230) arranged at the upper end of the inner cavity of the base (210) and extending to the top of the inner cavity of the outer cover (110) and used for cooling the inner cavity of the outer cover (110), a centrifugal fan (250) fixedly connected to the bottom of the inner cavity of the base (210), a connecting cylinder (260) communicated with the air outlet end of the centrifugal fan (250), an electric heating tube (270) arranged in the inner cavity of the connecting cylinder (260) and used for heating the airflow, and a connecting pipe (280) communicated with the back of the connecting cylinder (260) and having the other end communicated with the inner cavity of the outer cover (110). The front of the closed door (170) is provided with a viewing window, one side of the outer cover (110) is communicated with an air pipe (111), and the surface of the air pipe (111) is provided with a solenoid valve, and the output end of the microcontroller (180) is connected with the input end of the solenoid valve.

2. The loading device for multi-dimensional force calibration of claim 1, wherein: The positioning assembly (140) includes a limiting seat (141), a screw rod (142) threadedly connected to the front and back of the limiting seat (141), and an anti-skid pad hingedly connected to one end of the screw rod (142), and the multidimensional force sensor (150) is located in the inner cavity of the limiting seat (141), and one side of the anti-skid pad is in contact with the multidimensional force sensor (150).

3. The loading device for multi-dimensional force calibration of claim 1, wherein: The front of the base (210) is provided with a louver (211), the inner cavity of the louver (211) is fixedly connected with an intercepting net, both sides of the bottom of the inner cavity of the base (210) are provided with through grooves, the inner cavities of the through grooves are provided with heat dissipation fans (240), the bottom of the inner cavity of the through groove is fixedly connected with a filter screen, and the output end of the microcontroller (180) is connected with the input end of the heat dissipation fan (240).

4. The loading device for multi-dimensional force calibration of claim 1, wherein: ​ 5. The loading device for multi-dimensional force calibration of claim 1, wherein: The front of the microcontroller (180) is provided with a touch display screen, and the microcontroller (180) and the touch display screen are bidirectionally connected, the output ends of the multi-dimensional force sensor (150) and the temperature sensor (220) are connected with the input end of the microcontroller (180), and the output end of the microcontroller (180) is connected with the input ends of the centrifugal fan (250), the electric heating pipe (270), the semiconductor refrigeration piece (230), the first air cylinder (120) and the second air cylinder (130) respectively.

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