A non-invasive device for a material level gauge and a method of construction thereof

Abstract

This invention provides a non-invasive level gauge device and its construction method, belonging to the field of material storage technology. It includes a support foundation, a mounting bracket, a level gauge, mounting components, and an adaptive counterweight component. This invention completely avoids the structural damage caused by traditional installation methods that require opening holes in the top of the side wall, by placing the support foundation directly on the top of the silo side wall and clamping it in place with the mounting components. Simultaneously, the introduction of the adaptive counterweight component allows the device to achieve temporary stability through center of gravity adjustment before it is fully fixed, significantly reducing the operational difficulty and safety risks during high-altitude operations. This provides a novel solution for level detection that ensures the structural integrity of the silo while significantly improving installation convenience and personnel safety.

Description

Technical Field

[0001] This invention belongs to the field of material storage technology, specifically relating to a non-invasive level gauge device and its construction method. Background Technology

[0002] As indispensable storage equipment in industrial production processes, silos are widely used in industries such as chemical engineering, building materials, food processing, and metallurgy. They are primarily used to store powdery, granular, or lumpy materials to ensure the continuity and stability of production processes. The structural design of silos typically needs to balance volume utilization, smooth material loading and unloading, and the structural strength of the equipment itself. Among many operating parameters, changes in material level directly affect the real-time monitoring of material reserves, production scheduling, and the safety of silo operation. Therefore, level gauges, as key instruments for measuring the material level inside silos, play a crucial role in the stable operation of the entire production system due to their accuracy and reliability.

[0003] In traditional technical practices, the installation of level gauges often requires customized design based on the silo's structure and on-site working conditions. A common practice is to create openings in the top area of ​​the silo's sidewall to install the level gauge at the top of the silo, achieving non-contact or contact measurement of the material level. However, while this installation method is relatively simple in technical implementation, it reveals several significant drawbacks in actual operation. First, the silo sidewall, as the main structure bearing the lateral pressure of internal materials and external environmental loads, directly determines the overall strength and stability of the silo. Creating openings in the top of the sidewall inevitably weakens the silo structure locally. Especially under long-term dynamic loads, stress concentration can easily occur at the edges of the openings, leading to the initiation and propagation of fatigue cracks. In severe cases, this can even cause silo structural failure and safety accidents. Particularly when other facilities are located on top of the silo, requiring the silo to bear their weight, there is a significant risk of damage to the strength of the silo sidewall.

[0004] Secondly, from a construction safety perspective, the top and side walls of silos are typically high-altitude work areas. Installers need scaffolding, lifting platforms, and other auxiliary facilities during drilling and equipment securing, facing multiple risks including falls from heights and being struck by objects. This is especially true when installing level gauges on silos in renovation projects or those already in use. Since these silos often contain materials, hot work or mechanical drilling can easily ignite material dust, creating an explosive environment and further exacerbating the danger. Furthermore, drilling operations tend to increase maintenance frequency and costs. Especially when upgrading older silos, installing level gauges can easily damage the side walls, creating a fall hazard for workers moving around the top of the silo.

[0005] In summary, existing level gauge installation methods require drilling holes in the top of the silo's side wall, which not only causes irreversible damage to the silo's structural strength but also involves construction risks, posing a significant threat to personnel safety and the long-term stable operation of equipment. Therefore, exploring a level detection technology that does not require drilling into the silo's original structure and is easy and safe to install has become an urgent technical challenge for related industries. Summary of the Invention

[0006] The present invention aims to at least solve one of the aforementioned technical problems existing in the prior art. To this end, in a first aspect, the present invention provides a non-invasive level gauge device that can solve the problem of the destructive impact of level gauge installation on the strength of the silo.

[0007] Secondly, the present invention provides a non-invasive construction method for a level gauge that utilizes the above-mentioned non-invasive level gauge device.

[0008] A non-invasive level gauge device according to a first aspect embodiment of the present invention includes: A supporting foundation is placed on top of the side wall of the silo, and the supporting foundation extends along a first direction to both sides of the side wall of the silo. Mounting brackets are connected to both sides of the support base along the first direction and extend downward into the interior of the hopper; A level gauge is disposed at the bottom of the mounting bracket and configured to detect the level of the material in the hopper; The mounting assembly is connected to the support base and / or the mounting bracket, and the mounting assembly is clamped to both sides of the side wall of the hopper; An adaptive counterweight assembly is movably disposed on the support foundation along the first direction, and the adaptive counterweight assembly is configured to adjust the center of gravity of the support foundation.

[0009] The non-invasive level gauge device according to embodiments of the present invention has at least the following beneficial effects: This invention completely avoids the structural damage caused by traditional installation methods that require drilling holes in the top of the side wall, by placing the support base directly on the top of the silo side wall and clamping it in place with the installation components. Furthermore, the introduction of the adaptive counterweight component allows the device to achieve temporary stability by adjusting the center of gravity before it is fully secured, significantly reducing the operational difficulty and safety risks during high-altitude operations. This provides a novel solution for material level detection that ensures the structural integrity of the silo while significantly improving installation convenience and personnel safety. During fixation, the adaptive counterweight component can shift the center of gravity, preventing the support base from tilting due to unevenness in the top of the silo side wall, thus keeping the level gauges on both sides in the set position and orientation.

[0010] According to some embodiments of the present invention, the mounting assembly includes a first clamping arm and a second clamping arm, the first clamping arm being connected to one side of the support base along the first direction, the second clamping arm being connected to the other side of the support base along the first direction, and the first clamping arm and the second clamping arm being disposed opposite to each other to form a clamping space, the sidewall of the hopper being accommodated within the clamping space.

[0011] According to some embodiments of the present invention, the mounting assembly further includes two set screws, which are respectively mounted on the first clamping arm and the second clamping arm, and the two set screws coaxially abut against both sides of the side wall of the hopper.

[0012] According to some embodiments of the present invention, a ball joint is provided at one end of the set screw that abuts against the side wall of the hopper, and a contour seat is hinged through the ball joint, the contour seat being in surface contact with the side wall of the hopper.

[0013] According to some embodiments of the present invention, the support base is provided with a plurality of fixed plates along the first direction, and there is a clearance between two adjacent fixed plates. The first clamping arm and the second clamping arm are in an inverted L-shaped structure. The upper ends of the first clamping arm and the second clamping arm are respectively placed on the fixed plates and bolted to the fixed plates. The lower ends of the first clamping arm and the second clamping arm pass through the clearance and extend downward.

[0014] According to some embodiments of the present invention, the support base is provided with a guide portion along the first direction, the adaptive counterweight assembly includes a counterweight plate, the counterweight plate is slidably connected to the guide portion, and the counterweight plate is provided with a grip portion protruding upward relative to the support base.

[0015] According to some embodiments of the present invention, the mounting bracket is adjustablely connected to the support base to adjust the height of the level gauge.

[0016] According to some embodiments of the present invention, the non-invasive level gauge further includes a scissor-type positioning component, the scissor-type positioning component comprising: Two scissor lifts, both of which are rotatably mounted on the support base; Four positioning parts are respectively disposed at the end of the scissor bar and are symmetrically distributed on both sides of the side wall of the hopper; An elastic element is disposed between the scissor bars or between the scissor bars and the support base, for maintaining the positioning part in a natural state to elastically clamp the side wall of the hopper.

[0017] According to some embodiments of the present invention, the scissor-type positioning assembly further includes a fastener disposed between the scissor bar and the support base for restricting rotation of the scissor bar relative to the support base.

[0018] A non-invasive construction method for a level gauge according to a second aspect of the present invention includes: Provide the above-mentioned non-invasive device for the level gauge; Based on the depth of the silo or the material level detection requirements, select the installation height of the material level gauge and pre-install the material level gauge on the mounting bracket; Move the adaptive counterweight assembly to the middle position of the support base; The support base is placed on the top of the side wall of the silo, and the adaptive counterweight component is adjusted according to the tilt angle of the support base so that the support base maintains static balance in an unfixed state. Operate the mounting assembly to clamp it onto both sides of the side wall of the hopper, thus securing the device.

[0019] The non-invasive construction method for level gauges according to embodiments of the present invention has at least the following beneficial effects: This invention achieves a safe construction process of "balancing first, then fixing" by first moving the adaptive counterweight component to the middle position to lower the initial center of gravity, and then finely adjusting the counterweight according to the tilt angle until the supporting foundation reaches static balance. This method fundamentally solves the problem of requiring multiple people to cooperate and operating in the air in traditional installation methods, enabling a single person to safely and efficiently complete the high-altitude installation of the level gauge without auxiliary hoisting equipment.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and some of these additional aspects and advantages will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of an installation according to the present invention; Figure 2 This is a schematic diagram of a level gauge according to the present invention; Figure 3 This is a schematic diagram of one structure of the present invention; Figure 4 This is a top view of the structure of the present invention. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are 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 limiting this invention.

[0024] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0026] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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.

[0027] Reference Figures 1 to 4 This invention provides a non-invasive device for a level gauge 300, aiming to solve the problem in the prior art where installing the level gauge 300 requires drilling holes in the top side wall of the silo 500, resulting in structural damage to the silo 500 and high construction risks. This device achieves non-destructive installation of the silo 500 body through a straddle-type clamping structure combined with an adaptive center of gravity adjustment mechanism.

[0028] The device includes a support base 100, which serves as the load-bearing base for the entire device. During use, it is placed directly on top of the side wall of the silo 500 and extends along a first direction to both sides of the silo 500 side wall, resembling a beam structure straddling the top of the silo wall. Two mounting brackets 200 are respectively connected to the two sides of the support base 100 along the first direction and extend downward into the internal cavity of the silo 500. A level gauge 300 is fixedly mounted on the bottom of the mounting bracket 200, with its detection end facing the interior of the silo 500, for detecting the material level height within the silo. To secure the device to the side wall of the silo 500, the device also includes a mounting assembly 400, which is connected to the support base 100 and / or the mounting brackets 200. Its function is to mechanically clamp the assembly to both sides of the silo 500 side wall, thereby fixing the entire device to the silo 500 as a single unit. In addition, considering the risk of the device tipping over due to instability when straddling the top of the silo wall, the device is specially equipped with an adaptive counterweight component. This adaptive counterweight component can move on the support base 100 along the first direction. The operator can adjust the position of the counterweight component by sliding to change the center of gravity distribution of the entire device. Thus, before the installation component 400 is locked, the support base 100 is kept in a temporary static balance on the top of the side wall of the silo 500, which facilitates the subsequent fixing operation.

[0029] Understandably, this invention, by placing the support base 100 directly on the top of the side wall of the silo 500 and clamping it in place with the installation component 400, completely avoids the structural damage caused by the traditional installation method that requires drilling holes in the top of the side wall. Simultaneously, the introduction of the adaptive counterweight component allows the device to achieve temporary stability through center of gravity adjustment before complete fixation, significantly reducing the operational difficulty and safety risks during high-altitude operations. This provides a novel solution for material level detection that ensures the structural integrity of the silo 500 while significantly improving installation convenience and personnel safety. During fixation, the adaptive counterweight component can be used to change the center of gravity, preventing the support base 100 from tilting due to unevenness in the top of the side wall of the silo 500, thus keeping the level gauges 300 on both sides in the set position and posture.

[0030] Reference Figure 3 , Figure 4In one specific implementation of the mounting assembly 400, the mounting assembly 400 includes a first clamping arm 401 and a second clamping arm 402. The first clamping arm 401 is connected to one side of the support base 100 along a first direction, and the second clamping arm 402 is connected to the other side of the support base 100 along the first direction. These two clamping arms are arranged opposite to each other, thereby forming a clamping space between them. During installation, the side wall of the hopper 500 is precisely accommodated within this clamping space, and is fixed by tightening the clamping arms on both sides. To facilitate adjustment of the clamping force, the mounting assembly 400 also includes two set screws 403. These two set screws 403 are respectively mounted on the first clamping arm 401 and the second clamping arm 402, and the axes of the two set screws 403 are located on the same straight line, simultaneously abutting against the two side surfaces of the side wall of the hopper 500 from both sides. By rotating the set screws 403, the operator can drive the set screws 403 themselves to apply a clamping force to the side wall of the hopper 500. Furthermore, in order to accommodate the possible curved or irregular surfaces of the sidewall of the hopper 500, a ball joint is provided at one end of the set screw 403 that abuts against the sidewall of the hopper 500. A contoured seat is hinged through this ball joint. The contact surface between the contoured seat and the sidewall of the hopper 500 is designed to adaptively conform to the shape of the sidewall surface, thereby achieving surface contact rather than point contact. This not only increases the friction but also increases the contact area with the sidewall of the hopper 500, which is beneficial for achieving a protective effect on the sidewall of the hopper 500.

[0031] Reference Figure 3 Regarding the connection between the mounting bracket 200 and the supporting base 100, in some embodiments, the supporting base 100 is provided with multiple fixing plates 101 along the first direction, and a clearance opening 102 is reserved between two adjacent fixing plates 101. The first clamping arm 401 and the second clamping arm 402 are generally inverted L-shaped structures, with their upper ends respectively resting on the corresponding fixing plates 101 and being detachably fixed to the fixing plates 101 by bolts, while their lower ends pass through the clearance opening 102 and extend downward into the interior of the hopper 500. This structure facilitates rapid on-site assembly and disassembly.

[0032] During on-site installation, the distance between the first clamping arm 401 and the second clamping arm 402 can be set according to the thickness of the side wall of the hopper 500. Based on the set distance, the position of the fixing plate 101 where the first clamping arm 401 and the second clamping arm 402 are installed can be determined and pre-installed and fixed before being moved to the top of the hopper 500 for installation. It is understandable that although the set screw 403 has a certain adjustable length, if the distance from the connection point of the set screw 403 and the clamping arm to the side wall of the hopper 500 is too large, the torque length will be large, and the stability will be relatively weakened. In this embodiment, by using the fixing plate 101 to adjust the position of the first clamping arm 401 and the second clamping arm 402, it can effectively adapt to the side wall of the hopper 500 with different thicknesses and keep the distance from the connection point of the set screw 403 to the side wall of the hopper 500 within an appropriate range.

[0033] Reference Figure 3 , Figure 4 To achieve center of gravity adjustment, in some embodiments, the support base 100 is provided with a guide portion 103 along a first direction. The guide portion 103 can be a guide rail or a slide. The adaptive counterweight assembly includes a counterweight plate 104, which is slidably connected to the guide portion 103. For ease of operation, the counterweight plate 104 is provided with a grip portion 105 that protrudes upward relative to the support base 100. The operator can easily push the counterweight plate 104 to slide on the guide portion 103 by holding the grip portion 105.

[0034] Specifically, in application, operators can use the grip 105 to move the entire device. When placing it on the top of the side wall of the hopper 500, the grip 105 can also be used to quickly move the counterweight plate 104, allowing the device to be placed relatively stably on the top of the side wall of the hopper 500. At the same time, when clamping and fixing, the grip 105 can be used to quickly adjust the counterweight plate 104 to adjust the center of gravity of the device.

[0035] Furthermore, the counterweight plate 104 is equipped with clips or bolts for locking, so as to fix it after adjustment.

[0036] Considering the varying depths of different hoppers 500, in some embodiments, the mounting bracket 200 is configured as an adjustable structure, meaning the portion connected to the support base 100 can be adjusted vertically and locked, thereby adjusting the vertical height of the level gauge 300 fixed at its bottom within the hopper 500 to accommodate different detection needs. Specifically, the mounting bracket 200 has multiple mounting holes along the vertical direction, allowing the installation height to be changed by connecting and fixing the support base 100 through different mounting holes.

[0037] Reference Figure 3 , Figure 4To provide better pre-positioning during initial installation, some embodiments of the device also incorporate a scissor-type positioning assembly 600. This assembly includes two scissor arms 601 rotatably mounted on a support base 100. Four positioning portions 602 are symmetrically distributed on both sides of the sidewall of the hopper 500 at the ends of the scissor arms 601. Elastic members are provided between the scissor arms 601 or between the scissor arms 601 and the support base 100. These elastic members provide pre-tension, allowing the four positioning portions 602 to elastically clamp the sidewall of the hopper 500 in their natural state, providing temporary fixation. When final tightening or disassembly is required, the rotation of the scissor arms 601 can be restricted by fasteners located between the scissor arms 601 and the support base 100, thereby locking the position of the positioning assembly.

[0038] Understandably, when this device is placed on the top of the side wall of the hopper 500, the scissor-type positioning assembly 600 can be used to clamp the side wall of the hopper 500 for temporary fixation. Combined with the adjustment of the counterweight, this can effectively prevent the device from falling. Furthermore, after fixed installation, due to the limited clamping surface of the set screw 403, the device may twist. In this embodiment, four positioning parts 602 provide auxiliary clamping from both sides, effectively preventing twisting. In particular, the positioning parts 602 are close to the top of the side wall of the hopper 500, while the set screw 403 is located below. Together, they form a triangular clamping structure on both sides of the side wall of the hopper 500, effectively improving the stability after installation.

[0039] Furthermore, in some embodiments, the positioning part 602 is a rotatable rubber roller.

[0040] Based on the aforementioned device, a non-invasive construction method for the level gauge 300 is also proposed. This method first provides the aforementioned non-invasive device for the level gauge 300. Then, the operator pre-selects a suitable installation height for the level gauge 300 according to the actual depth of the silo 500 to be installed or the specific level detection requirements, and pre-installs the level gauge 300 on the mounting bracket 200. Next, the adaptive counterweight assembly is manually moved to the middle position of the support base 100 to reduce the overturning moment during initial installation. Subsequently, the entire support base 100 is hoisted or manually lifted to the top of the side wall of the silo 500 and placed securely. At this time, the horizontal state of the support base 100 is observed, and the position of the adaptive counterweight assembly is finely adjusted according to its tilt angle and direction until the support base 100 can maintain static balance solely by gravity without any tightening operations, i.e., it does not tilt to either side. Finally, by operating the installation component 400 and tightening the set screw 403, the installation component 400 is firmly clamped to both sides of the side wall of the hopper 500, thus completing the non-destructive and safe installation of the entire device.

[0041] In some embodiments, the non-invasive construction method for the level gauge 300 includes: First, determine the side wall thickness of the hopper 500, and then determine the installation distance between the first clamping arm 401 and the second clamping arm 402, and fix them on the support base 100 according to the installation distance. Next, determine the distance from the level gauge 300 to the top of the silo 500, determine the installation position of the mounting bracket 200 based on this distance, and fix it on the support base 100. At the same time, install the level gauge 300 to the bottom of the mounting bracket 200. The operator moves the material level gauge 300 to the top of the hopper 500 using the lifting device of the grip part 105, and places the support base 100 on the top of the side wall of the hopper 500. During placement, the operator controls the scissor bar 601 to open at a certain angle, and releases the scissor bar 601 after it is lowered, so that it can freely clamp the side wall of the hopper 500. At the same time, the operator judges whether the support base 100 can be placed stably, and adjusts the counterweight plate 104 according to the judgment result. Next, the position of the counterweight plate 104 is finely adjusted so that the level gauge 300 reaches the set installation position, and the counterweight plate 104 is fixed. Then, the set screw 403 is tightened to clamp it, and finally the scissor fork 601 is fixed to complete the installation of the device.

[0042] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A non-invasive level gauge device, characterized in that, include: A supporting foundation is placed on top of the side wall of the silo, and the supporting foundation extends along a first direction to both sides of the side wall of the silo. Mounting brackets are connected to both sides of the support base along the first direction and extend downward into the interior of the hopper; A level gauge is disposed at the bottom of the mounting bracket and configured to detect the level of the material in the hopper; The mounting assembly is connected to the support base and / or the mounting bracket, and the mounting assembly is clamped to both sides of the side wall of the hopper; An adaptive counterweight assembly is movably disposed on the support foundation along the first direction, and the adaptive counterweight assembly is configured to adjust the center of gravity of the support foundation.

2. The non-invasive level gauge device according to claim 1, characterized in that, The mounting assembly includes a first clamping arm and a second clamping arm. The first clamping arm is connected to one side of the support base along the first direction, and the second clamping arm is connected to the other side of the support base along the first direction. The first clamping arm and the second clamping arm are arranged opposite to each other to form a clamping space, and the side wall of the hopper is accommodated within the clamping space.

3. The non-invasive level gauge device according to claim 2, characterized in that, The mounting assembly also includes two set screws, which are respectively mounted on the first clamping arm and the second clamping arm, and the two set screws coaxially abut against the side walls of the hopper.

4. The non-invasive level gauge device according to claim 3, characterized in that, The set screw has a ball joint at one end that abuts against the side wall of the hopper, and a contour seat is hinged to the ball joint. The contour seat is in surface contact with the side wall of the hopper.

5. The non-invasive level gauge device according to claim 2, characterized in that, The supporting base is provided with multiple fixing plates along the first direction, and there is a clearance between two adjacent fixing plates. The first clamping arm and the second clamping arm are in an inverted L-shaped structure. The upper ends of the first clamping arm and the second clamping arm are respectively placed on the fixing plates and fixed to the fixing plates with bolts. The lower ends of the first clamping arm and the second clamping arm pass through the clearance and extend downward.

6. The non-invasive level gauge device according to claim 1, characterized in that, The supporting base is provided with a guide portion along the first direction, and the adaptive counterweight assembly includes a counterweight plate, which is slidably connected to the guide portion, and the counterweight plate is provided with a grip portion that protrudes upward relative to the supporting base.

7. The non-invasive level gauge device according to claim 1, characterized in that, The mounting bracket is adjustablely connected to the support base to adjust the height of the level gauge.

8. The non-invasive level gauge device according to claim 1, characterized in that, The non-invasive level gauge device further includes a scissor-type positioning component, which comprises: Two scissor lifts, both of which are rotatably mounted on the support base; Four positioning parts are respectively disposed at the end of the scissor bar and are symmetrically distributed on both sides of the side wall of the hopper; An elastic element is disposed between the scissor bars or between the scissor bars and the support base, for maintaining the positioning part in a natural state to elastically clamp the side wall of the hopper.

9. The non-invasive level gauge device according to claim 8, characterized in that, The scissor-type positioning assembly also includes a fastener disposed between the scissor bar and the support base to restrict the rotation of the scissor bar relative to the support base.

10. A non-invasive construction method for a level gauge, characterized in that, include: Provide a non-invasive level gauge device according to any one of claims 1 to 9; Based on the depth of the silo or the material level detection requirements, select the installation height of the material level gauge and pre-install the material level gauge on the mounting bracket; Move the adaptive counterweight assembly to the middle position of the support base; The support base is placed on the top of the side wall of the silo, and the adaptive counterweight component is adjusted according to the tilt angle of the support base so that the support base maintains static balance in an unfixed state. Operate the mounting assembly to clamp it onto both sides of the side wall of the hopper, thus securing the device.

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