Three-point prosthesis positioning single sensor weighing balance device

Abstract

The utility model discloses a single sensor weighing balance device of three point prosthesis positioning relates to weighing equipment technical field, including the rack, the rack bottom is provided with a set of weighing mechanism and three sets of prosthesis mechanism, a set of weighing mechanism and three sets of prosthesis mechanism are located at the rack bottom four corners. The utility model adopts the support structure of " one sensor + three prosthesis ", and the use number of high -priced weighing sensor is reduced greatly, and hardware cost is reduced obviously, and the prosthesis mechanism has no electronic component, and the anti -interference is strong, and need not maintain, further reduced the later -stage use cost, with the stable support of installation component and the mechanical regulation effect of balance component, can effectively realize each support point stress balance, cooperate rigid support structure and prevent the rack from tilting because of eccentric load, improve the stability and reliability of weighing process, effectively solved the problem that traditional multi -sensor cost is high, and the anti -interference is poor and the precision deficiency caused by single sensor stress uneven.

Description

Technical Field

[0001] This utility model relates to the field of weighing equipment technology, specifically a single-sensor weighing and balancing device with three-point dummy positioning. Background Technology

[0002] In the field of weighing equipment, traditional multi-support point systems (such as weighbridges, tanks, and platform scales) typically use multiple weighing sensors (such as strain gauges and piezoelectric sensors) to achieve the weighing function. However, the unit price of weighing sensors is relatively high, and the extensive use of them in multi-support point systems will lead to a significant increase in hardware costs.

[0003] For a rigid weighing platform (such as a four-corner support), theoretically, only one sensor is needed to calculate the total weight through mechanical decomposition. However, this requires uniform load distribution or the ability to correct it through algorithms, which presents certain difficulties for existing technologies.

[0004] Meanwhile, existing weighing sensors contain electronic components, which are easily interfered with in harsh environments (such as dust and humidity), have poor anti-interference capabilities, and are difficult to guarantee stability. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a single-sensor weighing and balancing device for three-point prosthetic positioning, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a single-sensor weighing and balancing device for three-point prosthetic positioning, comprising a placement frame, wherein a set of weighing mechanisms and three sets of prosthetic mechanisms are provided at the bottom of the placement frame;

[0007] One set of weighing mechanisms and three sets of spur mechanisms are located at the four corners of the bottom of the placement frame. The weighing mechanism includes a weighing sensor module that performs weight detection and signal transmission. The spur mechanism includes a spur support cylinder that provides rigid support but does not perform signal transmission. The spur support cylinder and the weighing sensor module together form a stable support structure to prevent overturning.

[0008] Both the weighing mechanism and the prosthesis mechanism include mounting components and balancing components;

[0009] The mounting components provide structural support for the weighing sensor module and the prosthetic support cylinder, ensuring their stable assembly. The balancing component is built into and assembled inside the mounting components, and achieves balanced force distribution at each support point through mechanical adjustment, thereby improving the overall balance performance of the weighing platform.

[0010] The mounting components include a base plate, longitudinal connecting plates, and a top plate;

[0011] The longitudinal connecting plate is vertically fixed to one side of the upper surface of the base plate, and the top plate is horizontally fixed to the top of the longitudinal connecting plate. The base plate is fixedly connected to the bottom of the weighing sensor module and the prosthetic support cylinder, respectively, while the top of the weighing sensor module and the prosthetic support cylinder are both in contact with the bottom of the top plate.

[0012] The base plate has several mounting holes for fixing the mounting components to the bottom of the placement frame. The top plate surface has positioning grooves that are compatible with the weighing sensor module and the prosthetic support cylinder to ensure the coaxiality of the component assembly.

[0013] The balancing assembly includes a first balancing frame, a second balancing frame, a telescopic rod, and a fisheye bearing;

[0014] The first balance frame and the second balance frame are movably connected by a telescopic rod. The first balance frame and the second balance frame are fixed on the bottom plate and the top plate, respectively. Two sets of fisheye bearings are set at both ends of the telescopic rod, and the two sets of fisheye bearings are connected to the first balance frame and the second balance frame by bolts.

[0015] A spring is fitted on the outer surface of the telescopic rod. The two ends of the spring abut against the first balance frame and the second balance frame, respectively, to buffer the instantaneous impact force at the support point.

[0016] In summary, this utility model has the following advantages: First, by adopting a support structure of "one sensor + three dummy", this utility model significantly reduces the number of expensive weighing sensors used, thereby significantly reducing hardware costs. Furthermore, the dummy mechanism has no electronic components, strong anti-interference capabilities, and requires no maintenance, further reducing subsequent operating costs. Second, by utilizing the stable support of the mounting components and the mechanical adjustment of the balancing components, the force distribution at each support point can be effectively balanced. Combined with the rigid support structure, it prevents the placement frame from tilting due to uneven loading, improving the stability and reliability of the weighing process. Third, the device adopts a modular design, allowing for flexible switching between dummy and sensor according to different accuracy requirements. This balances low cost and adaptability, making it suitable for industrial scenarios with less stringent accuracy requirements, while also meeting higher accuracy weighing needs through simple adjustments. It effectively solves the problems of high cost, poor anti-interference capabilities, and insufficient accuracy caused by uneven force distribution on a single sensor in traditional multi-sensor systems. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a first-view structural schematic diagram of the weighing mechanism of this utility model;

[0019] Figure 3 This is a second-view structural schematic diagram of the weighing mechanism of this utility model;

[0020] Figure 4This is a first-view structural diagram of the prosthesis mechanism of this utility model;

[0021] Figure 5 This is a second-view structural schematic diagram of the prosthesis mechanism of this utility model.

[0022] In the diagram: 1. Placement frame; 2. Weighing mechanism; 201. Weighing sensor module; 3. Prosthetic mechanism; 301. Prosthetic support cylinder; 4. Mounting assembly; 401. Base plate; 402. Longitudinal connecting plate; 403. Top plate; 5. Balancing assembly; 501. First balancing frame; 502. Second balancing frame; 503. Telescopic rod; 504. Fisheye bearing. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0024] The embodiments of this utility model will be described below based on its overall structure.

[0025] Example 1: Four-point support chemical raw material weighing device

[0026] like Figure 1-5 As shown, this embodiment is applied to the weighing scenario of raw material ton containers in a chemical production workshop. It adopts a four-point support structure of "one sensor + three dummy", and the specific structure is as follows:

[0027] The placement frame 1 is made of Q235 steel plate welded into a rectangular frame with a length × width × height of 2000mm × 1500mm × 300mm. The four corners of the bottom are pre-set with mounting slots for fixing the weighing mechanism 2 and the prosthetic mechanism 3.

[0028] Weighing mechanism 2 includes:

[0029] Weighing sensor module 201: Selects strain gauge type weighing sensor with a range of 0-5t, accuracy class C3, and temperature compensation function. The output signal is connected to the industrial controller through shielded cable.

[0030] Installation component 4 includes:

[0031] The base plate 401 is a 10mm thick steel plate with 4 Φ12mm mounting holes, which are fixed to the bottom of the placement frame 1 by expansion bolts;

[0032] The longitudinal connecting plate 402 is an 8mm thick steel plate, which is vertically welded to the left side of the upper surface of the base plate 401, with a height of 150mm.

[0033] The top plate 403 is a 10mm thick steel plate, horizontally welded to the top of the longitudinal connecting plate 402. The lower surface is provided with a circular positioning groove adapted to the weighing sensor module 201, with a diameter of 50mm and a depth of 5mm. The bottom of the sensor is fixed to the bottom plate 401 by bolts, and the top is fitted with the positioning groove with a clearance of ≤0.5mm.

[0034] Balance component 5 includes:

[0035] The first balance frame 501 and the second balance frame 502 are angle steels, which are respectively welded to the right side of the base plate 401 and the lower surface of the top plate 403;

[0036] The telescopic rod 503 is a Φ20mm chrome-plated optical shaft, and both ends are connected to the balance frame through fisheye bearings 504. The inner ring of the bearing is interference-fitted with the optical shaft, and the outer ring is bolted to the balance frame.

[0037] A Φ25mm spring with a stiffness coefficient of 50N / mm is fitted on the outer surface of the telescopic rod 503, and the two ends abut against the first and second balance frames respectively to form an elastic buffer structure;

[0038] Prosthetic component 3 includes:

[0039] Prosthetic support cylinder 301: Made of the same 40Cr alloy steel as the weighing sensor module 201, it is a hollow cylindrical structure with an outer diameter of 50mm, a wall thickness of 8mm, and a height consistent with the sensor. It has no built-in electronic components.

[0040] The structure of the mounting component 4 and the balancing component 5 is exactly the same as that of the weighing mechanism 2, except that the top of the prosthetic support cylinder 301 is in direct contact with the positioning groove of the top plate 403, and there is no sensor signal interface.

[0041] Work process

[0042] A ton container filled with chemical raw materials is placed in the center of the placement rack 1, where a support plate can be placed on the placement rack 1 to facilitate the placement of the ton container. The load is transmitted to the weighing mechanism 2 and the three sets of spur mechanisms 3 through the top plate 403.

[0043] The load cell module 201 detects the strain and deformation caused by the load and transmits the electrical signal to the controller;

[0044] The balancing assembly 5 compensates for the slight displacement of each support point through the telescopic rod 503 and the spring extension and retraction adjustment, ensuring that the load cell only bears the vertical component of the force;

[0045] The controller is based on a preset mechanical model and a four-point force balance formula for a rigid platform. It calculates the total weight based on the force data of a single set of weighing sensor modules 201, and displays and stores the results.

[0046] Example 2: High-precision weighing mode with modular switching

[0047] When improved weighing accuracy is required, such as for raw material proportioning and metering, this can be achieved through the following modular switching:

[0048] Disassemble the prosthesis support cylinder 301 of one set of prosthesis mechanism 3 and replace it with the same model of weighing sensor module 201;

[0049] Adjust the controller algorithm, enable the dual-sensor data fusion model, and correct the off-center load error based on the force decomposition formula of two points by using the force difference between the two sets of sensors.

[0050] The other two sets of prosthetic mechanisms 3 remain unchanged and still play a stabilizing and supporting role. At this time, the system cost is reduced by 60% compared with the full sensor solution, and the accuracy is improved to 0.1%FS.

[0051] Example description:

[0052] Example 1 uses a simplified configuration of "single sensor + three dummy" to meet the low-cost and high-stability weighing requirements in industrial scenarios, and is especially suitable for static or quasi-dynamic weighing in dusty or humid environments.

[0053] Example 2 demonstrates the flexibility of the device through modular design, allowing for dynamic adjustment of the number of sensors based on accuracy requirements, balancing cost and performance. Both examples embody the core design principles of this invention: "replacing sensors with prostheses to reduce costs and using balancing components to ensure balanced force distribution."

[0054] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A single-sensor weighing and balancing device for three-point prosthetic positioning, comprising a placement frame (1), characterized in that: The bottom of the placement rack (1) is provided with a set of weighing mechanism (2) and three sets of prosthetic mechanism (3). One set of weighing mechanisms (2) and three sets of prosthetic mechanisms (3) are located at the four corners of the bottom of the placement frame (1). The weighing mechanism (2) includes a weighing sensor module (201) that performs weight checking and signal transmission. The prosthetic mechanism (3) includes a prosthetic support cylinder (301) that provides rigid support and does not perform signal transmission. The prosthetic support cylinder (301) and the weighing sensor module (201) together form a stable support structure to prevent overturning.

2. The single-sensor weighing and balancing device for three-point prosthetic positioning according to claim 1, characterized in that: Both the weighing mechanism (2) and the prosthesis mechanism (3) include an installation component (4) and a balancing component (5). The mounting component (4) provides structural support for the weighing sensor module (201) and the prosthetic support cylinder (301) respectively, ensuring stable assembly of the two. The balancing component (5) is built into and assembled inside the mounting component (4), and achieves balanced force on each support point through mechanical adjustment, thereby improving the overall balance performance of the weighing platform.

3. The single-sensor weighing and balancing device for three-point prosthetic positioning according to claim 2, characterized in that: The mounting assembly (4) includes a base plate (401), a longitudinal connecting plate (402), and a top plate (403). The longitudinal connecting plate (402) is vertically fixed to one side of the upper surface of the bottom plate (401), and the top plate (403) is horizontally fixed to the top of the longitudinal connecting plate (402). The bottom plate (401) is fixedly connected to the bottom of the weighing sensor module (201) and the prosthetic support cylinder (301), respectively, and the tops of the weighing sensor module (201) and the prosthetic support cylinder (301) are in contact with the bottom of the top plate (403).

4. The single-sensor weighing and balancing device for three-point prosthetic positioning according to claim 2, characterized in that: The balancing assembly (5) includes a first balancing frame (501), a second balancing frame (502), a telescopic rod (503), and a fisheye bearing (504). The first balance frame (501) and the second balance frame (502) are movably connected by a telescopic rod (503). The first balance frame (501) and the second balance frame (502) are fixed on the base plate (401) and the top plate (403) respectively. Two sets of fish-eye bearings (504) are set at both ends of the telescopic rod (503), and the two sets of fish-eye bearings (504) are connected to the first balance frame (501) and the second balance frame (502) by bolts.

5. The single-sensor weighing and balancing device for three-point prosthetic positioning according to claim 3, characterized in that: The base plate (401) has several mounting holes for fixing the mounting component (4) to the bottom of the placement frame (1). The top plate (403) has a positioning groove on its surface that is compatible with the weighing sensor module (201) and the prosthetic support cylinder (301) to ensure the coaxiality of the component assembly.

6. The single-sensor weighing and balancing device for three-point prosthetic positioning according to claim 4, characterized in that: The telescopic rod (503) is fitted with a spring on its outer surface. The two ends of the spring abut against the first balance frame (501) and the second balance frame (502) respectively, which are used to buffer the instantaneous impact force of the support point.

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