A load rotational speed detecting device for a food processor

Abstract

This invention belongs to the technical field of electrical speed detection equipment, and discloses a load speed detection device for a food processing machine, comprising: a fixed bracket having two opposing support ends arranged laterally at intervals, forming a detection space between the two support ends to accommodate the food processing machine; an elastic element connected between the two support ends and in a pre-tensioned state; a sensor fixed to the pre-tensioned elastic element; and a support base with a driving mechanism connected to the fixed bracket to move the fixed bracket to a detection position. The elastic element and the sensor move with the fixed bracket. In the detection position, the food processing machine is located in the detection space, and the sensor adheres to the outer wall of the food processing machine, forcing the elastic element to be in a tensioned state to detect the load speed of the food processing machine. This invention achieves non-destructive detection of the load speed of a food processing machine, while balancing detection efficiency and accuracy.

Description

Technical Field

[0001] This invention belongs to the technical field of electrical speed detection equipment, specifically relating to a load speed detection device for a food processing machine. Background Technology

[0002] The grinding effect, operating noise, energy consumption, and lifespan of a food processor are all directly related to the stability of the motor's load speed. If the load speed deviates from the design standard, it will lead to insufficient grinding of ingredients, low pulp yield, or problems such as machine vibration and excessive noise, directly affecting product quality. During the manufacturing process of food processors, load speed has always been a key performance indicator. The full inspection process on the production line needs to simulate real-world user scenarios to effectively screen out products with substandard speeds, prevent inferior products from entering the market, and maintain brand reputation.

[0003] Currently, the mainstream technologies used for testing on food processing machine production lines such as soymilk makers are the stroboscopic tachometer method and the infrared tachometer method. The stroboscopic tachometer method requires operators to visually align the rotating parts at close range. However, under load, the cup and solution can obstruct the path of the stroboscopic light, causing light deviation or measurement failure, resulting in poor accuracy. The infrared tachometer method involves attaching reflective markers (such as reflective stickers) to the surface of the motor shaft. The infrared light emitted by the instrument shines on the shaft, and when the reflective markers rotate with the shaft and pass the infrared probe, they reflect back a strong light signal. The instrument calculates the motor speed by counting the number of light pulses per unit time. However, both methods require disassembling the entire machine and rely on manual operation, such as disassembly, attaching markers, alignment, and parameter adjustment. Manual testing efficiency is far lower than the needs of the production line. Disassembling and reassembling products increases the wear and tear on parts. Therefore, existing technologies cannot meet the requirement of accurate measurement of the load speed of food processing machines without damaging the integrity of the entire machine.

[0004] In the field of food processing machines, some models have built-in speed detection modules. For example, existing patent CN201810055397.2 discloses a mixing control scheme for a food processor. This scheme uses a vibration detector installed directly near the mixing motor, integrated with the controller and motor within the machine body. During normal mixing operations, this scheme collects the vibration signals of the entire machine caused by the motor's rotation in real time and then adaptively adjusts the motor speed based on the vibration intensity. However, this vibration detection component exists as a built-in functional module, aiming to control the motor speed in real time during mixing operations to ensure consistent processing results. It cannot be directly applied to the full inspection stage of the production line and cannot achieve targeted inspection of products flowing on the production line. Summary of the Invention

[0005] This invention provides a load speed detection device for food processing machines to solve the technical problem of how to accurately measure the load speed of food processing machines to meet the full inspection requirements of the production line without damaging the integrity of the machine.

[0006] The technical solution adopted in this invention is as follows: This invention provides a load speed detection device for a food processing machine, comprising: a fixed bracket having two opposing support ends arranged laterally at intervals, forming a detection space between the two support ends to accommodate the food processing machine; an elastic element connected between the two support ends and in a pre-tightened state; a sensor fixed to the elastic element; and a support base with a driving mechanism connected to the fixed bracket to move the fixed bracket to a detection position, so that the food processing machine is located in the detection space. When the elastic element and the sensor move to the detection position with the fixed bracket, the sensor adheres to the outer wall of the food processing machine, forcing the elastic element to be in a tensioned state, thereby detecting the load speed of the food processing machine.

[0007] The load speed detection device provided by this invention forms a detection space that can accommodate a food processing machine through the two support ends of a fixed bracket. An elastic element connected between the two support ends is in a pre-tightened state, ensuring that the sensor, fixed in the pre-tightened state, is positioned in a preset position. A drive mechanism on the support base moves the fixed bracket, enabling the sensor to move from the preset position to precise contact with the outer wall of the food processing machine during detection. This forces the elastic element into a tensioned state, thus detecting the load speed of the food processing machine. It can be directly applied to production line detection processes targeting the load speed of food processing machines, completing load speed detection without disassembling or damaging the entire machine, achieving non-destructive testing and effectively avoiding the component damage problems caused by disassembly and testing in existing technologies. The pre-tightened state of the elastic element between the two support ends ensures the sensor is positioned in a preset position, guaranteeing a match with the preset detection position on the food processing machine when in contact with it, thus improving detection accuracy. Furthermore, by attaching the sensor to the outer wall of the food processing machine, the elastic element is forced into a tensioned state, ensuring the stability of the sensor's attachment. This not only avoids detection deviations caused by poor attachment but also prevents interference from the machine's vibrations and other chaotic signals, improving detection accuracy. The elastic element cuts off vibration between the sensor and the detection equipment, preventing data leakage due to the rigid support during food processing machine operation and avoiding the impact of the detection equipment's vibrations on the food processing machine. Ultimately, this ensures the sensor accurately detects the food processing machine's operating status, improving detection accuracy. The automated drive design of the drive mechanism is suitable for full-inspection scenarios on production lines, especially its ability to automatically attach to the food processing machine and complete detection without human intervention, as well as its ability to adjust the detection position without manual intervention, greatly improving detection efficiency and the accuracy of the results. In summary, this invention achieves non-destructive testing of the load speed of a food processing machine, balancing detection efficiency and accuracy. This effectively filters out products with substandard speeds, ensuring the grinding effect and noise control of the food processing machine from the source of production, guaranteeing product quality, and enhancing the product's market competitiveness.

[0008] In a preferred embodiment, the fixed bracket includes a positioning rod and two extension rods. The positioning rod is arranged laterally, one end of the extension rod is connected to the positioning rod, and the other end forms the support end. At least one extension rod is movably connected to the positioning rod to adjust the lateral distance between the two support ends.

[0009] By configuring the fixed bracket as a combination of a positioning rod and two extension rods, with at least one extension rod movably connected to the positioning rod to adjust the lateral distance between the two support ends, it can flexibly adapt to food processing machines of different sizes, such as large-sized blenders, small-sized handheld juicers, meat grinders, etc., making the testing equipment more versatile. This avoids the need to replace the testing device due to differences in food processing machine size, saves testing time, and prevents incompatibility issues that can arise when the testing equipment is only compatible with a single size of food processing machine and is used in production lines with multiple product specifications. Simultaneously, the adjustable support end distance further ensures precise contact between the sensor and the outer wall of food processing machines of different sizes, guaranteeing consistent tension of the elastic element, thereby maintaining the testing accuracy for each size of food processing machine and expanding the applicability of the testing equipment. The drive mechanism can either drive the positioning rod to move the extension rod, causing the sensor to move with the fixed bracket to contact the outer wall of the food processing machine, or it can directly drive the extension rod, with the positioning rod only serving the function of positioning and adjusting the distance, to achieve the sensor moving with the fixed bracket to contact the outer wall of the food processing machine.

[0010] In a preferred embodiment, the detection device further includes an adjustment mechanism for driving the extension rod to move relative to the positioning rod.

[0011] By adding an adjustment mechanism to the fixed bracket to drive the extension rod to move relative to the positioning rod, the lateral distance between the two support ends can be automatically adjusted. This allows for quick adaptation to food processing machines of different sizes and specifications without manual adjustment. The adjustment is both accurate and fast, further improving the automation level of the testing equipment and the adaptation efficiency of the production line, speeding up the testing cycle, avoiding errors caused by manual adjustment, improving the versatility of the equipment, and meeting the needs of continuous full inspection of multi-specification products on the production line.

[0012] In a preferred embodiment, the positioning rod is provided with a laterally extending guide rail, and one end of the extension rod is slidably connected to the guide rail; or, the extension rod includes an extension section perpendicular to the positioning rod.

[0013] By setting a laterally extending guide rail on the positioning rod and slidingly connecting one end of the extension rod to the guide rail, precise and stable guiding support is provided for the movement of the extension rod. At the same time, the guide rail structure enables stepless adjustment of the lateral distance of the support end, ensuring flexible adaptation to food processing machines of different sizes and specifications. It ensures that the two support ends remain parallel and the movement trajectory does not deviate during the adjustment process, thereby ensuring the consistency of the sensor's contact position with the outer wall of the food processing machine. This makes the adjustment action of the extension rod smoother, more precise, and allows for a larger and more refined adjustment range. It can quickly match the detection needs of multi-specification food processing machines, further improving the adjustment efficiency and detection accuracy of the detection equipment, and ensuring the continuity and reliability of full inspection of multi-specification products on the production line.

[0014] The extension rod, including an extension section perpendicular to the positioning rod, ensures that the two support ends always maintain a positive alignment with the tangent direction of the outer circumference of the food processing machine. Combined with the stepless adjustment function achieved by the guide rail on the positioning rod, this allows the sensor to maintain a perpendicular contact angle with the outer wall of the machine body when adapting to food processing machines of different sizes and specifications. This ensures uniform tension of the elastic element and effectively avoids errors introduced by uneven force due to tilted contact angles, thus affecting detection accuracy. The extension section perpendicular to the positioning rod ensures a stable connection between the positioning rod and the extension rod, improving the structural strength and stability of the fixing bracket itself, maintaining the stable position of the support ends, and ensuring the stable position of the sensor during detection.

[0015] In a preferred embodiment, the fixed bracket is an arc-shaped frame, and the elastic element forms the bowstring of the arc-shaped frame.

[0016] By setting the fixed bracket as an arc-shaped frame and using the elastic element as the bowstring of the arc-shaped frame, the slight elastic deformation of the arc-shaped frame itself, combined with the elastic deformation effect of the elastic element, allows the elastic element and the sensor to better adapt to the arc-shaped contour of the food processor. The sensor fits more stably against the outer circumference of the food processor. Moreover, the arc-shaped frame itself can form a uniform and stable tension without additional adjustment, ensuring the tightness and consistency of the sensor's fit against the circumference wall. This prevents the sensor from not fitting properly or introducing random vibration signals, which would affect the detection effect and improve the accuracy of the detection.

[0017] In a preferred embodiment, the fixed bracket includes a telescopic rod and two connecting rods fixed at both ends of the telescopic rod, the free ends of the connecting rods forming the support ends, and the telescopic rod extends and retracts to adjust the lateral distance between the two support ends.

[0018] By setting the fixed bracket as a telescopic rod and connecting rods at both ends, the lateral distance between the two support ends can be directly adjusted by the telescopic rod's extension and retraction. Combined with the support end formed by the free end of the connecting rod, the adjustment method is more streamlined and can be quickly adapted to food processing machines of different sizes and specifications. At the same time, the telescopic rod structure is stable and not easily deformed, which can ensure accurate positioning after the support end spacing is adjusted, ensure the consistency of the sensor's fit with the outer wall of the food processing machine, improve the equipment's versatility, and meet the needs of continuous full inspection of multi-specification products on the production line.

[0019] In a preferred embodiment, the support end includes a first positioning plate and a second positioning plate detachably fixed to the first positioning plate, the first positioning plate and the second positioning plate clamping and fixing the end of the elastic member; or, the end of the elastic member is wrapped around the support end, a positioning groove is provided on the outer peripheral wall of the support end, and the end of the elastic member is inserted into the positioning groove to prevent slippage.

[0020] By setting the support end as a combination of a first positioning plate and a detachable second positioning plate, the clamping action of the two is used to firmly fix the end of the elastic element. This ensures the positional accuracy of the elastic element after installation, and allows for quick replacement and maintenance of the elastic element by disassembling the second positioning plate. This avoids problems caused by aging or damage to the elastic element, and ensures that the elastic element is always in a stable tension state during the testing process to guarantee testing accuracy. Furthermore, it allows for flexible replacement of elastic elements with different elastic parameters to adapt to various testing scenarios or meet diverse testing needs. This makes it more versatile, more practical, and has a longer service life, meeting the requirements for long-term stable operation of the production line.

[0021] By wrapping the end of the elastic element around the support end and setting a positioning groove on the outer peripheral wall of the support end for the end of the elastic element to be engaged, a double anti-detachment fixing structure can be formed. The wrapping method allows the elastic element to be reliably opened in the radial direction of the support end, and the positioning groove restricts the movement of the end of the elastic element along the axial direction of the support end. This prevents the elastic element from slipping or displacing during tensioning or testing, ensuring that the elastic element is always in a stable tension state to maintain the accuracy of testing. Moreover, the elastic element can be firmly installed without additional complex fixing parts, and it is also easy to disassemble and replace the elastic element, improving the reliability and applicability of the testing equipment in the long-term continuous operation of the production line.

[0022] In a preferred embodiment, the elastic element includes an elastic strip and a mounting member disposed in the middle of the elastic strip. The two ends of the elastic strip are respectively connected to two support ends, and the mounting member has a mounting plane for fixing the sensor.

[0023] By setting the elastic element as an elastic strip plus a central mounting component, the sensor is stably fixed using the mounting plane of the mounting component. This avoids the sensor directly contacting the elastic strip and being affected by the deformation of the elastic strip, which could cause installation tilting or positional displacement. At the same time, the connection between the two ends of the elastic strip and the support end is reliable, ensuring that the tension of the elastic element is uniform and stable during detection. This ensures that the sensor can accurately fit against the outer wall of the food processing machine to collect effective signals, further improving the operational reliability and detection accuracy of the detection equipment and adapting to the continuous full inspection requirements of the production line.

[0024] In a preferred embodiment, the drive mechanism includes a lifting component and a lateral component. The lifting component drives the lateral component and the fixed bracket to move up and down synchronously. The fixed bracket is fixed to the lateral component so that it can drive lateral movement.

[0025] By setting the drive mechanism as a combination of lifting and lateral components, the lifting component drives the lateral component and the fixed bracket to move up and down synchronously. The lateral component, in turn, drives the fixed bracket to move laterally, realizing bidirectional adjustment of the fixed bracket in space. This allows for flexible adaptation to food processing machines of different heights and sizes, ensuring that the sensor accurately fits the optimal detection position of the food processing machine. It enables automated and precise adjustment of the detection position, allowing for adaptation to different specifications of food processing machines without manual intervention, significantly improving detection efficiency and meeting the needs of full inspection of multiple product specifications on the production line.

[0026] In a preferred embodiment, the lifting assembly includes a vertically mounted lifting cylinder and a lifting platform, the lifting platform being fixedly connected to the upper end of the piston rod of the lifting cylinder, and the lateral movement assembly being mounted on the lifting platform; or, the lifting assembly includes a lifting screw, a lifting slider threaded to the lifting screw, and a lifting motor driving the lifting screw to rotate, and the lateral movement assembly being mounted on the lifting slider; or, the lateral movement assembly includes a lateral movement cylinder mounted laterally on the lifting assembly, and the fixed bracket being fixed to the front end of the piston rod of the lateral movement cylinder; or, the lateral movement assembly includes a linear motor, and the fixed bracket being fixed to the front end of the motion shaft of the linear motor.

[0027] By configuring the lifting assembly as a combination of a lifting cylinder and a lifting platform, or a combination of a lifting screw, a lifting slider, and a lifting motor, and by setting the traverse assembly to be driven by a traverse cylinder or a linear motor, diverse implementation solutions are provided for the drive mechanism. The appropriate solution can be flexibly selected based on the automation level and precision requirements of the production line, adapting to different application scenarios. Low-cost, high-response adjustment is achieved through lifting and traverse cylinders, meeting the cycle time requirements of large-scale standardized production. The transmission method of lifting screws and lifting motors improves adjustment accuracy, ensuring the accuracy of sensor contact position, further enhancing the equipment's adaptability and practicality, and meeting the full inspection requirements of different food processing machine production lines. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a side view of the cooperation between the detection equipment and the food processing machine in Embodiment 1 of the present invention; Figure 2 This is a three-dimensional schematic diagram of the cooperation between the detection equipment and the food processing machine in Embodiment 1 of the present invention; Figure 3 This is a three-dimensional structural diagram of the detection device in Embodiment 1 of the present invention; Figure 4 This is a top view of the detection device in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram illustrating the cooperation between the detection equipment and the food processing machine in Embodiment 2 of the present invention; Figure 6 This is a three-dimensional structural diagram of the detection device in Embodiment Example 2 of the present invention; Figure 7 This is a top view of the detection device in Embodiment Example 2 of the present invention.

[0029] List of components and reference numerals: 100, Detection equipment; 10, Fixed bracket; 11, Positioning rod; 12, Extension rod; 13, Bow-shaped frame; 14, Bowstring; 20, Support end; 21, First positioning plate; 22, Second positioning plate; 30, Elastic element; 31, Elastic strip; 32, Mounting component; 40, Sensor; 50, Support base; 60, Drive mechanism; 61, Lifting assembly; 62, Lateral movement assembly; 63, Screw; 200, Food processing machine; 201, Main unit; 202, Grinding cup. Detailed Implementation

[0030] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0031] Many specific details are set forth in the following description to provide a thorough understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore, the scope of protection of the invention is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, embodiments of the invention and features thereof can be combined with each other.

[0032] Furthermore, in the description of this invention, it should be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] like Figure 1-4 As shown, in one embodiment of the present invention, a load speed detection device for a food processing machine is provided, comprising: a fixed bracket 10 having two opposing support ends 20 arranged laterally at intervals, forming a detection space between the two support ends 20 for accommodating the food processing machine 200; an elastic element 30 connected between the two support ends 20; a sensor 40 fixed on the elastic element 30; and a support base 50 with a drive mechanism 60 connected to the fixed bracket 10 to move the fixed bracket 10 to a detection position. The elastic element 30 and the sensor 40 move with the fixed bracket 10. In the detection position, the food processing machine 200 is located in the detection space, and the sensor 40 adheres to the outer wall of the food processing machine 200, forcing the elastic element 30 to be in a tensioned state, thereby detecting the load speed of the food processing machine 200.

[0036] The load speed detection device 100 provided by this invention forms a detection space that can accommodate a food processing machine 200 through the two support ends 20 of the fixed bracket 10. Combined with the connection between the elastic element 30 and the sensor 40, and the structure where the drive mechanism 60 on the support base 50 drives the fixed bracket 10 to move, it achieves precise contact between the sensor 40 and the outer wall of the food processing machine 200 during detection, and keeps the elastic element 30 in a tensioned state. It can be directly applied to the production line detection process for the load speed of the food processing machine 200, completing the load speed detection without disassembling or damaging the entire food processing machine 200, achieving non-destructive testing, and effectively avoiding the component damage problems caused by disassembly and testing in existing technologies. By forcing the elastic element 30 to be in a tensioned state by the sensor 40's contact with the outer wall of the food processing machine 200, the stability of the sensor 40's contact is ensured. This not only avoids detection deviations caused by poor contact, but also prevents interference from the machine's vibration and other chaotic signals on the sensor 40, improving the accuracy of the detection. The automated drive design of the drive mechanism 60 is adapted to the full inspection scenario of the production line. Adjustments to the inspection position can be completed without manual intervention, greatly improving inspection efficiency and the accuracy of the results. In summary, this invention achieves non-destructive testing of the load speed of the food processing machine 200, balancing inspection efficiency and accuracy. This effectively filters out products with substandard speeds, ensuring the grinding effect, noise control, and other core performance characteristics of the food processing machine 200 from the source of production, guaranteeing product quality and enhancing market competitiveness.

[0037] It is important to emphasize that, for the actual working scenario of the food processing machine 200, this invention creatively proposes a strip-shaped elastic element 30 structure connected between the two support ends 20 to ensure the stability of the sensor 40's fit. This not only avoids detection deviations caused by poor fit but also prevents interference from the machine's vibration and other chaotic signals to the sensor 40. Specifically, in the scenario where the motor drives the blade assembly to agitate food during the operation of the food processing machine 200, the elastic element 30 of this invention has a better detection effect compared to other elastic structures such as springs. First, if the sensor 40 is held by a spring, the spring itself has an inherent resonant frequency, which is prone to resonance under the continuous and variable vibration of the machine body. The interference signal generated by its own elastic deformation may amplify the high-frequency impact noise and vibration signal of the blade assembly cutting food, masking the characteristic frequency corresponding to the motor's load speed. Furthermore, the long-term repeated compression and rebound of the spring is prone to fatigue deformation, which affects the consistency of the measurement. In this invention, the tension of the elastic element 30 allows the sensor 40 to fit tightly against the circumferential curved surface of the machine body, resulting in uniform and stable force distribution. The elastic element 30 can also deform flexibly in sync with slight vibrations of the machine body, without any obvious inherent resonant frequency, thus avoiding the introduction of additional resonance interference. This highlights the true load vibration signal, resulting in high detection accuracy and greater stability, thereby ensuring the precision and reliability of motor load speed detection and meeting the long-term continuous full inspection requirements of the production line.

[0038] In addition, in this invention, preferably, the elastic element 30 is connected between the two support ends 20 and is in a pre-tightened state, and the sensor 40 is attached to the outer wall of the food processing machine 200, forcing the elastic element 30 into a tensioned state to detect the load speed of the food processing machine 200. By connecting the elastic element between the two support ends and being in a pre-tightened state, the sensor is positioned in a preset position, ensuring that it matches the preset detection position of the food processing machine when attached, thus improving detection accuracy. Furthermore, by attaching the sensor to the outer wall of the food processing machine and forcing the elastic element into a tensioned state, the stability of the sensor attachment is ensured. This not only avoids detection deviations caused by poor attachment but also prevents interference from random signals such as vibrations of the entire machine itself, improving detection accuracy. The elastic element can cut off vibrations between the sensor and the detection equipment, preventing the detection data from leaking out due to the rigid fixed support during the operation of the food processing machine and preventing the vibration of the detection equipment itself from affecting the food processing machine. Ultimately, this ensures that the sensor accurately detects the working state of the food processing machine, improving detection accuracy. The automated drive design with a drive mechanism is adapted to the full inspection scenario of the production line. In particular, it can automatically attach to the food processing machine to complete the inspection in an unmanned state, and can adjust the inspection position without human intervention, which greatly improves the inspection efficiency and the accuracy of the inspection results.

[0039] The present invention does not limit the specific structural form of the fixing bracket 10, which can be any one of the following embodiments 1-3: Implementation Example 1, such as Figure 1-4 As shown in this embodiment, the fixed bracket 10 includes a positioning rod 11 and two extension rods 12. The positioning rod 11 is arranged laterally, one end of the extension rod 12 is connected to the positioning rod 11, and the other end forms a support end 20. At least one extension rod 12 is movably connected to the positioning rod 11 to adjust the lateral distance between the two support ends 20. Preferably, the detection device 100 further includes an adjustment mechanism for driving the extension rod 12 to move relative to the positioning rod 11.

[0040] In this embodiment, the positioning rod 11 is connected to the drive mechanism 60 via a transmission connection. Thus, the drive mechanism 60 drives the extension rod 12 to move via the positioning rod 11, causing the sensor to move with the fixed bracket until it is in contact with the outer wall of the food processing machine. Alternatively, the drive mechanism can directly drive the extension rod, with the positioning rod only serving the function of positioning and adjusting distance, thereby enabling the sensor to move with the fixed bracket until it is in contact with the outer wall of the food processing machine.

[0041] More specifically, the extension rod 12 and the positioning rod 11 are movably connected. For example, in a specific embodiment of this implementation, multiple positioning holes are provided on the positioning rod 11. By using screws 63 to pass through the same position of the extension rod 12 and fix it to different positioning holes, the extension rod 12 can move relative to the positioning rod 11, which can change the relative position of the extension rod 12 and the positioning rod 11, thereby adjusting the lateral distance between the two support ends 20.

[0042] Specifically, in this embodiment, the extension rod 12 includes an extension section perpendicular to the positioning rod 11 and a connecting section that is bent and connected to the extension section, and the connecting section is movably connected to the positioning rod 11.

[0043] Of course, in other embodiments of this example, in order to achieve the movable connection between the extension rod 12 and the positioning rod 11, a laterally extending guide rail can be provided on the positioning rod 11, and one end of the extension rod 12 can be slidably connected to the guide rail. The guide rail can be a groove or a convex rail, thereby achieving stepless adjustment.

[0044] This embodiment sets the fixed bracket 10 as a combination of a positioning rod 11 and two extension rods 12, with at least one extension rod 12 movably connected to the positioning rod 11 to adjust the lateral distance between the two support ends 20. This allows for flexible adaptation to food processing machines 200 of different sizes, such as large-sized blenders, small-sized handheld juicers, meat grinders, etc., making the testing device 100 more versatile. It avoids the need to replace the testing device due to differences in the size of the food processing machine 200, saving testing time and preventing the testing device 100 from being limited to a single size of food processing machine 200, which could lead to incompatibility issues when dealing with multi-size product production lines. Simultaneously, the adjustable distance between the support ends 20 further ensures precise contact between the sensor 40 and the outer wall of different sized food processing machines 200, guaranteeing the consistency of the tension of the elastic element 30, thereby maintaining the testing accuracy for each size of food processing machine 200 and expanding the applicability of the testing device 100.

[0045] By adding an adjustment mechanism to the fixed bracket 10 for driving the extension rod 12 to move relative to the positioning rod 11, the lateral distance between the two support ends 20 can be automatically adjusted. It can quickly adapt to food processing machines 200 of different sizes and specifications without manual adjustment. It is both accurate and fast, further improving the automation level of the testing equipment 100 and the adaptation efficiency of the production line, speeding up the testing cycle, avoiding errors from manual adjustment, improving the versatility of the equipment, and meeting the needs of continuous full inspection of multi-specification products on the production line.

[0046] By setting a laterally extending guide rail on the positioning rod 11 and slidingly connecting one end of the extension rod 12 to the guide rail, precise and stable guiding support is provided for the movement of the extension rod 12. At the same time, the guide rail structure enables stepless adjustment of the lateral distance of the support end 20, ensuring flexible adaptation to food processing machines 200 of different sizes and specifications. It ensures that the two support ends 20 remain parallel and their movement trajectories do not deviate during the adjustment process, thereby ensuring the consistency of the contact position between the sensor 40 and the outer wall of the food processing machine 200. This makes the adjustment action of the extension rod 12 more stable, precise, and has a larger and more refined adjustment range, quickly matching the detection needs of multi-specification food processing machines 200, further improving the adjustment efficiency and detection accuracy of the detection equipment 100, and ensuring the continuity and reliability of full inspection of multi-specification products on the production line.

[0047] The extension rod 12, including an extension section perpendicular to the positioning rod 11, ensures that the two support ends 20 are always positively aligned with the tangent direction of the outer circumference of the food processing machine 200. Combined with the stepless adjustment function achieved by the guide rail on the positioning rod 11, the sensor 40 maintains a perpendicular contact angle with the outer wall of the machine body when adapting to food processing machines 200 of different sizes and specifications. This ensures the uniformity of the tension of the elastic element 30 and effectively avoids errors introduced by uneven force due to tilted contact angles, thus affecting detection accuracy. The extension section perpendicular to the positioning rod 11 ensures a stable connection between the positioning rod 11 and the extension rod 12, improving the structural strength and stability of the fixed bracket 10 itself, thereby maintaining the stable position of the support ends 20 and the sensor 40 during detection.

[0048] Implementation Example 2, such as Figure 5-7 As shown, the difference between this embodiment and embodiment 1 is that the fixed bracket 10 includes an arc-shaped frame 13, and the elastic element 30 includes a bowstring 14 forming the arc-shaped frame 13.

[0049] By setting the fixed bracket 10 as an arc-shaped frame 13 and using the elastic element 30 as the bowstring 14 of the arc-shaped frame 13, the slight elastic deformation of the arc-shaped frame 13 and the elastic deformation effect of the elastic element 30 are combined to allow the elastic element 30 and the sensor 40 to better fit the arc-shaped contour of the food processing machine 200. The sensor 40 fits more stably against the outer circumference of the food processing machine 200. Moreover, the arc-shaped frame 13 itself can form a uniform and stable tension without additional adjustment, ensuring the tightness and consistency of the fit between the sensor 40 and the circumference wall, preventing the sensor 40 from not fitting firmly or introducing random vibration signals, which would affect the detection effect and improve the accuracy of the detection.

[0050] In this embodiment, preferably, the bow-shaped frame 13 can be a plastic structure bow-shaped frame 13 to expand its ability to adapt to deformation.

[0051] In a specific embodiment of this example, preferably, the distance between the two support ends 20 can still be adjusted. For example, the bow-shaped frame 13 includes a positioning section, a first arc-shaped section and a second arc-shaped section that are separately and symmetrically arranged on both sides of the positioning section. The first arc-shaped section or the second arc-shaped section can be slidably connected to the positioning section. The positioning section is installed on the drive mechanism 60, thereby realizing the adjustable distance between the two support ends 20.

[0052] Of course, the method of connecting the first arc segment or the second arc segment with the positioning segment can be referred to in Implementation Example 1.

[0053] Implementation Example 3 differs from Implementation Example 1 in the way the distance between the two support ends 20 is adjusted. In a preferred embodiment, the fixed bracket 10 includes a telescopic rod and two connecting rods fixed at both ends of the telescopic rod. The free ends of the connecting rods form support ends 20, and the telescopic rod extends and retracts to adjust the lateral distance between the two support ends 20.

[0054] By setting the fixed bracket 10 as a telescopic rod and connecting rods at both ends, the lateral distance between the two support ends 20 can be directly adjusted by the telescopic rod's telescopic movement. Combined with the support ends 20 formed by the free ends of the connecting rods, the adjustment method is more streamlined and can be quickly adapted to food processing machines 200 of different sizes and specifications. At the same time, the telescopic rod structure is stable and not easily deformed, which can ensure accurate positioning after the support end 20 spacing is adjusted, ensure the consistency of the sensor 40 and the outer wall of the food processing machine 200, improve the equipment's versatility, and meet the needs of continuous full inspection of multi-specification products on the production line.

[0055] It should be noted that the present invention does not limit the connection method between the elastic element 30 and the support end 20. For example, in a preferred embodiment, referring to... Figure 3 The support end 20 includes a first positioning plate 21 and a second positioning plate 22 that is detachably fixed to the first positioning plate 21. The first positioning plate 21 and the second positioning plate 22 clamp and fix the end of the elastic member 30. The elastic member 30 is an elastic strip or elastic band made of rubber or silicone. The elastic strip or elastic band itself does not have rigidity (compared to a metal spring), thereby preventing vibration from being transmitted through the elastic member.

[0056] By setting the support end 20 as a combination structure of the first positioning plate 21 and the detachable second positioning plate 22, the clamping action of the two is used to firmly fix the end of the elastic element 30. This ensures the positional accuracy of the elastic element 30 after installation, and allows for quick replacement and maintenance of the elastic element 30 by disassembling the second positioning plate 22. This avoids damage or aging of the elastic element 30, ensuring that the elastic element 30 is always in a stable tension state during the testing process to guarantee testing accuracy. Furthermore, elastic elements 30 with different elastic parameters can be flexibly replaced to adapt to various testing scenarios or meet diverse testing needs. This makes the elastic element 30 more versatile, more practical, and has a longer service life, meeting the requirements for long-term stable operation of the production line.

[0057] Of course, in other preferred embodiments, the end of the elastic member 30 is wrapped around the support end 20, and a positioning groove is provided on the outer peripheral wall of the support end 20, so that the end of the elastic member 30 is inserted into the positioning groove to prevent slippage; wherein, the elastic member 30 is an elastic strip or an elastic ring.

[0058] By wrapping the end of the elastic element 30 around the support end 20 and providing a positioning groove on the outer peripheral wall of the support end 20 for the end of the elastic element 30 to be engaged, a double anti-detachment fixing structure can be formed. The wrapping method allows the elastic element 30 to be reliably opened in the radial direction of the support end 20, and the positioning groove restricts the movement of the end of the elastic element 30 along the axial direction of the support end 20. This prevents the elastic element 30 from slipping or displacing during tensioning or testing, ensuring that the elastic element 30 is always in a stable tension state to maintain testing accuracy. Moreover, the elastic element 30 can be firmly installed without additional complex fixing parts, and it is also easy to disassemble and replace the elastic element 30, improving the reliability and applicability of the testing equipment 100 during long-term continuous operation of the production line.

[0059] In a preferred embodiment, such as Figure 3 As shown, the elastic element 30 includes an elastic strip 31 and a mounting member 32 disposed in the middle of the elastic strip 31. The two ends of the elastic strip 31 are respectively connected to two support ends 20, and the mounting member 32 has a mounting plane for fixing the sensor 40.

[0060] By setting the elastic element 30 as an elastic strip 31 plus a central mounting part 32, the mounting plane of the mounting part 32 is used to achieve stable fixation of the sensor 40, avoiding direct contact between the sensor 40 and the elastic strip 31, which would cause installation tilt or positional displacement due to the deformation of the elastic strip 31. At the same time, the connection between the two ends of the elastic strip 31 and the support end 20 is reliable, ensuring that the tension of the elastic element 30 is uniform and stable during detection, and ensuring that the sensor 40 can accurately fit the outer wall of the food processing machine 200 to collect effective signals, further improving the operational reliability and detection accuracy of the detection equipment 100, and adapting to the use requirements of continuous full inspection of the production line.

[0061] It should be noted that the present invention does not limit the specific driving method of the driving mechanism 60 on the fixed bracket 10.

[0062] like Figure 3 As shown, in a preferred embodiment, the drive mechanism 60 includes a lifting component 61 and a lateral component 62. The lifting component 61 drives the lateral component 62 and the fixed bracket 10 to move up and down synchronously. The fixed bracket 10 is fixed on the lateral component 62 so that it can move laterally.

[0063] Optionally, the lifting assembly 61 includes a vertically mounted lifting cylinder and a lifting plate, with the lifting plate fixedly connected to the upper end of the piston rod of the lifting cylinder, and the transverse moving assembly 62 mounted on the lifting plate; or, the lifting assembly 61 includes a lifting screw, a lifting slider threaded to the lifting screw, and a lifting motor that drives the lifting screw to rotate, with the transverse moving assembly 62 mounted on the lifting slider; or, the transverse moving assembly 62 includes a transverse moving cylinder mounted laterally on the lifting assembly 61, with the fixed bracket 10 fixed to the front end of the piston rod of the transverse moving cylinder; or, the transverse moving assembly 62 includes a linear motor, with the fixed bracket 10 fixed to the front end of the motion shaft of the linear motor.

[0064] By setting the drive mechanism 60 as a combination of the lifting component 61 and the lateral component 62, the lifting component 61 drives the lateral component 62 and the fixed bracket 10 to move up and down synchronously. The lateral component 62 drives the fixed bracket 10 to move laterally, realizing bidirectional adjustment of the fixed bracket 10 in space, which can flexibly adapt to food processing machines 200 of different heights and sizes. This ensures that the sensor 40 is accurately attached to the optimal detection position of the food processing machine 200, realizing automated and precise adjustment of the detection position. It can adapt the detection position of different specifications of food processing machines 200 without manual intervention, greatly improving detection efficiency and meeting the needs of full inspection of multi-specification products on the production line.

[0065] By configuring the lifting assembly 61 as a combination of a lifting cylinder and a lifting carrier plate, or a combination of a lifting screw, a lifting slider, and a lifting motor, and by setting the transverse component 62 to be driven by a transverse cylinder or a linear motor, diverse implementation solutions are provided for the drive mechanism 60. These solutions allow for flexible selection based on the automation level and precision requirements of the production line, adapting to different application scenarios. The lifting cylinder and transverse cylinder enable low-cost, high-response-speed adjustment, meeting the cycle time requirements of large-scale standardized production. The transmission method of the lifting screw and lifting motor improves adjustment accuracy, ensuring the accuracy of the sensor 40's contact position, further enhancing the equipment's adaptability and practicality, and meeting the full inspection requirements of different food processing machine 200 production lines.

[0066] The control logic of the detection device 100 is described below in conjunction with the preferred embodiments: In one preferred embodiment, such as Figure 2 As shown, the food processing machine 200 to be tested includes a main unit 201 and a grinding cup 202 installed above the main unit 201. A motor is installed inside the main unit 201, and a grinding blade is installed inside the grinding cup 202. The rotating shaft of the motor is connected to the grinding blade for transmission.

[0067] like Figure 2 As shown, the detection device 100 includes a fixed bracket 10 with two opposing support ends 20 arranged laterally, forming a detection space between the two support ends 20 to accommodate the food processing machine 200; an elastic element 30 connected between the two support ends 20; a sensor 40 fixed on the elastic element 30; and a support base 50 with a drive mechanism 60 connected to the fixed bracket 10 to move the fixed bracket 10 to the detection position. The elastic element 30 and the sensor 40 move with the fixed bracket 10. In the detection position, the food processing machine 200 is located in the detection space, and the sensor 40 adheres to the outer wall of the food processing machine 200, forcing the elastic element 30 to be in a tensioned state. The sensor 40 is an acceleration sensor that collects vibration data during the operation of the food processing machine 200 to detect the load speed of the food processing machine 200.

[0068] More preferably, the detection device 100 further includes a processing module for presetting the blade number parameter of the pulverizing blade, and the processing module decomposes the vibration data to obtain a power spectral density spectrum, extracts the feature frequency with the largest amplitude based on the power spectral density spectrum as the motor load vibration frequency, and calculates the motor load speed based on the motor load vibration frequency and the blade number parameter. Specifically, the processing module includes: a signal preprocessing unit for filtering and denoising the vibration signal; a feature signal extraction unit for performing wavelet packet decomposition on the preprocessed vibration signal to separate vibration signals from different sources (from the motor rotor, blade agitation of water flow, motor fan blades, etc.); converting the time-domain signal into a frequency-domain signal through a fast Fourier transform algorithm to generate the power spectral density spectrum, and extracting the feature frequency with the largest amplitude as the motor load vibration frequency; and a calculation unit for storing the blade number parameter of the pulverizing blade, and calculating the motor load speed based on the motor load vibration frequency and the blade number parameter.

[0069] More preferably, the detection device 100 further includes a current monitoring module for monitoring the operating current of the motor, determining whether the motor is in a load operating state, and sending a start signal to the drive mechanism 60 after the motor has entered a load operating state for a preset duration. Upon receiving the start signal, the drive mechanism 60 drives the sensor 40 to move to lateral contact with the outer wall of the crushing cup 202, i.e., the rigid support reaches the detection position. It should be noted that since the vibration signal detected by the sensor 40 is a superimposed frequency, it is preferable to wait until the load operation is stable before contacting the sensor for detection, making the superimposed value of the motor speed range more accurate.

[0070] Optionally, the sensor 40 is also used to detect the contact force signal with the crushing cup 202, and send a stop signal to the drive mechanism 60 after the contact force signal reaches a threshold, and the drive mechanism 60 stops driving after receiving the stop signal.

[0071] Based on the testing equipment 100 provided in this embodiment, its testing process is fully adapted to the full inspection cycle of the production line. The testing equipment 100 provided in this embodiment makes the testing time for a single food processing machine 200 less than 1 minute. Taking a soy milk maker as an example, the specific testing steps for the food processing machine 200 to be tested are as follows: Step 1: Preparation and initialization of the soy milk maker to be tested Place the assembled soymilk maker to be tested at the testing station, inject a standard liquid load (configured according to product design requirements, such as a "water + soybean" mixture, weighing 500g ± 10g) into the cup, and connect the power supply to the soymilk maker; start the testing equipment 100, and initialize the parameters of the above control modules, including setting the current threshold, sampling frequency, speed range, vibration amplitude limit, etc. Step 2: Motor current monitoring and acquisition triggering When you start the soymilk maker's blending function, the motor begins to drive the grinding blades to blend the liquid load. The current monitoring module collects the motor's operating current in real time. When the current exceeds the preset threshold and the duration is greater than 2 seconds, the logic controller is triggered to send a "drive mechanism start" signal to the mechanical execution module. Step 3: Sensor 40 bonding and signal acquisition After receiving the start signal, the drive mechanism 60 controls the fixed bracket 10 to move, so that the sensor 40 is attached to the outer wall of the food processor 200, forcing the elastic element 30 to be in a tensioned state. Preferably, the pulverizing blades in the pulverizing cup 202 have a high degree of overlap, or are on the middle side of the pulverizing cup 202 (at this time, the detection direction of the sensor 40 is radial along the pulverizing cup 202). After the sensor 40 is in place (confirmed by the cylinder limit switch in the drive mechanism 60), the high-speed data acquisition card starts vibration signal acquisition, continuously acquiring vibration data for a preset duration, usually 2-5 seconds, to ensure coverage of the complete load vibration cycle, and transmits it to the industrial control computer in real time. Step 4: Vibration signal processing and rotational speed calculation The industrial control computer processes the collected vibration data using signal analysis software from the processing module. The specific process is as follows: Signal preprocessing: A 50Hz notch filter is used to remove grid interference, and the Hanning window function is used to suppress signal spectrum leakage; interference from AC mains frequency signals is avoided. Feature signal extraction: Wavelet packet decomposition (3-5 decomposition layers) is performed on the preprocessed signal to separate vibration signals from different sources such as motor rotor rotation, motor cooling fan vibration, and water flow agitation by the pulverizing blade; then, the time domain signal is converted into the frequency domain signal through FFT decomposition to generate the power spectral density spectrum of the vibration signal and extract the signal of water flow agitation. Load speed conversion: In the power spectral density spectrum, the vibration signal generated by the blades agitating the water flow is concentrated and manifests as the characteristic frequency with the largest amplitude (denoted as f, unit: Hz); according to the number of blades of the soymilk maker (denoted as n, such as the common 4-blade blade, then n=4), the motor load speed is converted by the formula: Load speed (RPM) = (f / n) × 60.

[0072] For example: if the maximum amplitude characteristic frequency corresponding to the 4-blade blade is 500Hz, then the load speed = (500 / 4) × 60 = 7500RPM. Step 5: Mechanical precision testing and pass / fail determination.

[0073] Mechanical precision analysis: The vibration amplitude in the power spectral density spectrum directly reflects the mechanical assembly precision of the soymilk maker. If the dynamic balance of the grinding blade is poor or the coaxiality of the blade shaft and the grinding cup 202 is deviated, the vibration amplitude will increase significantly. Threshold comparison: Compare the calculated load speed with the preset acceptable speed range (e.g., 7000-8000 RPM), and at the same time compare the vibration amplitude with the set amplitude limit (e.g., ≤0.5 g2 / Hz); Results output: If the rotation speed is within the acceptable range and the vibration amplitude is less than or equal to the limit, the product is deemed qualified and the green indicator light will illuminate; if any indicator exceeds the limit, the product is deemed unqualified, the audible and visual alarm will be activated, the red indicator light will illuminate, and the data storage unit on the industrial computer will automatically record the product's test data (including rotation speed, vibration amplitude, test time, etc.). Step 6: Device reset and next round of testing.

[0074] After the pass / fail determination is completed, the trigger logic controller sends a "drive mechanism reset" signal to the mechanical execution module, and the drive mechanism 60 drives the fixed bracket 10 and the sensor 40 back to the initial position; Manual or automated equipment removes the inspected soymilk machine from the workstation, and a new soymilk machine to be tested enters the inspection workstation. Steps 1-5 are repeated to achieve continuous full inspection. The testing equipment 100 provided in this embodiment has the following advantages: High testing accuracy: the load speed measurement error is ≤ ±10 RPM, and the vibration amplitude detection resolution is 0.001g, meeting the accuracy requirements for full inspection of soybean milk machine production; High testing efficiency: the testing time for a single unit is less than 1 minute, which is more efficient than existing methods (3-5 minutes / unit), and can achieve 100% full inspection of the production line; Low cost: no consumables such as reflective markings are required, avoiding component damage caused by disassembly, and reducing testing costs by more than 50%; High applicability: through parameter configuration (current threshold, sampling frequency, number of blades, etc.), it can be adapted to food processing machine models with different power and different blade group designs, and has good versatility.

[0075] In summary, this invention, specifically addressing the actual working scenario of the food processing machine 200, creatively proposes a structure utilizing an extended strip-shaped elastic element 30 connected between the two support ends 20 to ensure the stability of the sensor 40's fit. This not only avoids detection deviations caused by poor fit but also prevents interference from junk signals such as vibrations of the entire machine itself on the sensor 40. This invention achieves non-destructive testing of the load speed of the food processing machine 200, balancing detection efficiency and accuracy. This effectively filters out products with substandard speeds, ensuring the grinding effect and noise control of the food processing machine 200 from the source of production, guaranteeing product quality, and enhancing the product's market competitiveness.

[0076] For any parts not mentioned in this invention, existing technologies can be used or referenced.

[0077] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0078] The above are merely embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A load speed detection device for a food processing machine, characterized in that, include: A fixed bracket has two opposing support ends, which are arranged laterally at intervals, forming a detection space between the two support ends that can accommodate a food processing machine; An elastic element, which is connected between the two support ends; The sensor is fixed to the elastic element; A support base is provided, and a driving mechanism is provided on the support base. The driving mechanism is connected to the fixed bracket to drive the fixed bracket to move to the detection position so that the food processing machine is located in the detection space. When the elastic element and the sensor move to the detection position with the fixed bracket, the sensor is attached to the outer wall of the food processing machine, forcing the elastic element to be in a tensioned state, so as to detect the load speed of the food processing machine.

2. The load speed detection device for a food processing machine according to claim 1, characterized in that, The fixed bracket includes a positioning rod and two extension rods. The positioning rod is arranged laterally. One end of the extension rod is connected to the positioning rod, and the other end forms the support end. At least one extension rod is movably connected to the positioning rod to adjust the lateral distance between the two support ends.

3. The load speed detection device for a food processing machine according to claim 2, characterized in that, The detection equipment also includes an adjustment mechanism for driving the extension rod to move relative to the positioning rod.

4. The load speed detection device for a food processing machine according to claim 2, characterized in that, The positioning rod is provided with a laterally extending guide rail, and one end of the extension rod is slidably connected to the guide rail; Alternatively, the extension rod may include an extension section perpendicular to the positioning rod.

5. The load speed detection device for a food processing machine according to claim 1, characterized in that, The fixed bracket is an arc-shaped frame, and the elastic element forms the bowstring of the arc-shaped frame.

6. The load speed detection device for a food processing machine according to claim 1, characterized in that, The fixed bracket includes a telescopic rod and two connecting rods fixed at both ends of the telescopic rod. The free end of the connecting rod forms the support end, and the telescopic rod extends and retracts to adjust the lateral distance between the two support ends.

7. A load speed detection device for a food processing machine according to any one of claims 1-6, characterized in that, The support end includes a first positioning plate and a second positioning plate that is detachably fixed to the first positioning plate. The first positioning plate and the second positioning plate clamp and fix the end of the elastic member. Alternatively, the end of the elastic element is wound around the support end, and a positioning groove is provided on the outer peripheral wall of the support end, so that the end of the elastic element is engaged in the positioning groove to prevent slippage.

8. A load speed detection device for a food processing machine according to any one of claims 1-6, characterized in that, The elastic element includes an elastic strip and a mounting component disposed in the middle of the elastic strip. The two ends of the elastic strip are respectively connected to two support ends, and the mounting component has a mounting plane for fixing the sensor.

9. A load speed detection device for a food processing machine according to any one of claims 1-6, characterized in that, The driving mechanism includes a lifting component and a lateral component. The lifting component drives the lateral component and the fixed bracket to move up and down synchronously. The fixed bracket is fixed on the lateral component so that it can drive the lateral movement.

10. A load speed detection device for a food processing machine according to claim 9, characterized in that, The lifting assembly includes a vertically installed lifting cylinder and a lifting plate. The lifting plate is fixedly connected to the upper end of the piston rod of the lifting cylinder, and the lateral movement assembly is installed on the lifting plate. Alternatively, the lifting assembly includes a lifting screw, a lifting slider threaded to the lifting screw, and a lifting motor that drives the lifting screw to rotate, with the lateral movement assembly mounted on the lifting slider; Alternatively, the lateral movement assembly includes a lateral movement cylinder mounted laterally on the lifting assembly, and the fixed bracket is fixed to the front end of the piston rod of the lateral movement cylinder; Alternatively, the lateral movement assembly may include a linear motor, with the fixed bracket fixed to the front end of the linear motor's motion shaft.

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