Weighing system installed on host bottom plate

Abstract

The utility model discloses a weighing system installed on a host base plate. The weighing system comprises a base plate, a controller and a winding device. The first fixed pulley is mounted on the side plate, and a steel wire rope led out of the winding device bypasses the first fixed pulley; a weighing module is mounted on the bottom plate between the winding device and the first fixed pulley; the weighing module comprises a strain type weighing sensor, a thrust column and a movable pulley, wherein the thrust column and the movable pulley are installed on a rotating support. The middle of the rotating bracket is rotatably mounted on the inner side of the bottom plate; the movable pulley is installed at the first end of the rotating support. The thrust column is installed at the second end of the rotating support. The steel wire rope passes through the movable pulley to enable the thrust column on the rotating bracket to press against the strain type weighing sensor; the strain type weighing sensor is connected with the controller; through the ingenious lever mechanism of the pulley block and the rotating support, the weight of a heavy object hung on the clothes airing machine is converted into the pressure corresponding to the strain type weighing sensor, and the pressure is only 1 / 4 of the gravity of the heavy object, so that the measurement sensitivity and precision of the system are remarkably improved.

Description

Technical Field

[0001] This utility model relates to a weighing system for a clothes drying machine, and more particularly to a weighing system installed on the base plate of the main unit. Background Technology

[0002] The clothes drying rack is equipped with a weighing system that can accurately weigh the clothes hanging on the drying rod and display the weight clearly, thus effectively preventing the clothes drying rack from being overloaded or partially overloaded. Currently, the common practice is to install strain gauges inside the drying rod at the lower end of the steel wire rope, or on the side panel of the main unit.

[0003] However, this installation method has the following significant problems:

[0004] The control circuit and display of the weighing system are usually located in the main unit. This requires long wires to connect with the strain gauges, which not only increases the complexity of the wiring but may also affect the stability of signal transmission.

[0005] The extremely limited installation space at the drying rack and the main unit's side panel greatly hinders the installation of the strain gauges and related components. Furthermore, the installation process may negatively impact the overall appearance of the product, compromising its aesthetics. Typically, based on the tension at both ends of the steel wire rope, for example, if the drying rack can bear a weight of 10 kg, the strain gauge must have an equivalent load-bearing capacity of 5 kg. This significantly increases the performance requirements of the strain gauge, leading to high costs and increasing the overall manufacturing cost of the product. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a weighing system installed on the base plate of the main unit. Through the ingenious pulley system and the lever mechanism of the rotating bracket, the weight of the hanging load on the clothes drying rack is converted into the pressure of the strain gauge load cell. This pressure can be only one-quarter of the weight of the load, thereby significantly improving the measurement sensitivity and accuracy of the system. At the same time, the floating gap is used to realize the automatic reset function, which enhances the reliability and stability of the system.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is: a weighing system installed on the base plate of the main unit, including the base plate, and a controller and a winding device installed in the middle position;

[0008] The first fixed pulley is installed on the side plate, and the steel wire rope led out by the winding device passes around the first fixed pulley;

[0009] A weighing module is installed on the base plate between the winding device and the first fixed pulley;

[0010] The weighing module includes a strain gauge load cell, a thrust column and a movable pulley mounted on a rotating bracket;

[0011] The rotating bracket is rotatably mounted on the inner side of the base plate in the middle;

[0012] The movable pulley is installed at the first end of the rotating bracket, and the thrust column is installed at the second end of the rotating bracket;

[0013] The steel wire rope passes through the movable pulley, causing the thrust column on the rotating bracket to press against the strain gauge load cell.

[0014] The strain gauge load cell is connected to the controller.

[0015] A further preferred embodiment of this utility model is as follows: the rotating bracket is installed on the inner side of the base plate via an n-type bracket; the n-type bracket includes a top plate and two side plates, and the top plate is connected to the base plate via a first screw assembly;

[0016] The middle part of the rotating bracket is connected between the two side plates by the first axle pin.

[0017] A further preferred embodiment of this utility model is that the movable pulley is inserted into the through hole at the first end of the rotating bracket via a second axle pin;

[0018] The thrust column is inserted into the through hole at the second end of the rotating bracket via a third shaft pin.

[0019] A further preferred embodiment of this utility model is as follows: a second fixed pulley is installed in the middle of the rotating bracket, and the wire rope drawn out from the winding device passes through the bottom of the second fixed pulley, then tilts upwards, passes through the moving pulley, and then extends horizontally to the upper side of the first fixed pulley.

[0020] A further preferred embodiment of this utility model is: the strain gauge load cell is installed inside the base, and the second screw assembly fixes the strain gauge load cell in the base;

[0021] The third screw assembly secures the base to the inside of the base plate;

[0022] A deformation window is provided on the base plate;

[0023] The elastic deformation part of the strain gauge load cell is located at the deformation window position;

[0024] The thrust column acts on the elastic deformation part of the strain gauge load cell.

[0025] A further preferred embodiment of this utility model is as follows: a reinforcing base plate is provided on the outer side of the base plate, the thickness of the base plate is 0.5-0.8 mm, and the thickness of the reinforcing base plate is 1.2-1.5 mm.

[0026] Another technical subject: a weighing system mounted on a base plate of a main unit, comprising a base plate, a controller, and a winding device, wherein the controller and the winding device are mounted in the middle area of ​​the base plate;

[0027] It also includes a first fixed pulley installed on the side plate, and a weighing module is provided on the base plate between the first fixed pulley and the winding device. The weighing module includes a strain gauge load cell, a rotating bracket, and a thrust column and a movable pulley respectively installed at both ends of the rotating bracket.

[0028] The rotating bracket is mounted on the base plate at its middle position via an n-shaped bracket. The n-shaped bracket includes a top plate and two side plates, and a floating gap is formed between the top wall of the rotating bracket and the top plate.

[0029] The wire rope passes through the movable pulley, and the force on the movable pulley will drive the rotating bracket to rotate in the first direction. The floating gap on the first side of the rotating bracket will decrease, and the floating gap on the second side of the rotating bracket will increase; until the thrust column on the rotating bracket triggers the strain gauge weighing sensor.

[0030] A further preferred technical solution of this utility model is as follows: when the force applied to the movable pulley is less than a preset value, the rotating bracket will rotate in the second direction, the floating gap on the first side of the rotating bracket will expand, the floating gap on the second side of the rotating bracket will shrink, the thrust column will leave the strain gauge load cell, until both ends of the rotating bracket return to the equilibrium state.

[0031] A further preferred embodiment of this utility model is as follows: a second fixed pulley is installed in the middle of the rotating bracket, and the wire rope drawn out from the winding device passes through the bottom of the second fixed pulley, then tilts upwards, passes through the moving pulley, and then extends horizontally to the upper side of the first fixed pulley.

[0032] A further preferred embodiment of this utility model is that a deformation window is provided on the base plate;

[0033] The elastic deformation part of the strain gauge load cell is located at the deformation window position;

[0034] The thrust column acts on the elastic deformation part of the strain gauge load cell.

[0035] A reinforcing base plate is provided on the outer side of the base plate. The thickness of the base plate is 0.5-0.8 mm, and the thickness of the reinforcing base plate is 1.2-1.5 mm.

[0036] Compared with existing technologies, the advantages of this invention are: by installing the weighing module on the base plate of the main unit, the space of the base plate is fully utilized, avoiding the space limitations caused by installing the weighing system on the drying rod or the side plate of the main unit in traditional clothes drying racks. This technical approach not only reduces the space occupied by the drying rod and side plate, but also improves the overall compactness of the system, making the overall structure of the clothes drying rack simpler and more aesthetically pleasing. At the same time, through the rational layout of the controller, winding device, and weighing module, the system can achieve efficient force transmission and signal transmission during operation, further improving the performance and reliability of the clothes drying rack.

[0037] Furthermore, by utilizing pulley systems and lever principles, the tension in the wire rope is converted into pressure on the strain gauge load cell, and this pressure can be only one-quarter of the weight of the object. Moreover, in practical use, the distance between the movable pulley and the fixed pulley (the second fixed pulley) can be adjusted to regulate the angle between the wire rope and the movable pulley, thereby adjusting the ratio of pressure to the weight of the object. This technique not only improves the system's sensitivity but also achieves higher measurement accuracy by narrowing the range of the measured force.

[0038] Furthermore, the floating gap design allows the rotating bracket to automatically adjust its position under load, ensuring even force transmission and further improving the system's measurement accuracy and stability. This high-precision measurement function provides users with a reliable clothes-drying experience, effectively preventing overloading or localized overloading of the clothes dryer.

[0039] In actual use, when the force on the movable pulley is less than the preset value, the rotating bracket will rotate in the opposite direction until both ends return to equilibrium. This automatic reset function not only improves the reliability of the system but also extends the service life of the sensor and reduces system failures caused by external impacts or misoperation. Furthermore, through the dual fixing method of screw assemblies and floating gaps, the system maintains stable performance during long-term use and will not deform or be damaged even under significant external forces. This highly reliable technical solution makes the weighing system more advantageous in practical applications and can meet users' needs for long-term stable operation of clothes drying racks. Attached Figure Description

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0041] Figure 1A schematic diagram of a clothes drying rack equipped with a base plate weighing system;

[0042] Figure 2 Assembly diagram of the weighing system mounted on the base plate Figure 1 ;

[0043] Figure 3 Assembly diagram of the weighing system mounted on the base plate Figure 2 ;

[0044] Figure 4 This is a schematic diagram of the overall structure of the weighing system of this utility model;

[0045] Figure 5 A side view of the weighing system mounted on the base plate;

[0046] Figure 6 This is a partial enlarged view of the side structure of the weighing system;

[0047] Figure 7 This is a magnified view of a portion of the thrust column and strain gauge load cell;

[0048] Figure 8 This is a schematic diagram showing the fit between the elastic deformation section and the deformation window. Detailed Implementation

[0049] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0050] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it will not be further defined and explained in subsequent figures.

[0051] like Figures 1 to 3 As shown, a weighing system 100 mounted on the base plate of the main unit includes a base plate 10, with a controller and a winding device 30 installed in the middle. This weighing system 100 is an innovative weighing solution for clothes dryers, with its core components mounted on the base plate 10 of the main unit. This technical solution makes full use of the space on the base plate 10, avoiding many problems caused by traditional clothes dryer weighing systems that are installed on the drying rod or the side plate of the main unit, such as limited installation space, complex wiring, and damage to the appearance.

[0052] The base plate 10 serves as the load-bearing foundation of the entire system. The layout of the various components mounted on it has been optimized to ensure sufficient strength and stability. Specifically, a controller and a winding device 30 are installed in the middle of the base plate 10. The controller is responsible for receiving signals from the weighing module, processing and analyzing them to achieve precise control of the clothes drying rack's weighing function. The winding device 30 is a key component for the clothes drying rack's lifting function. It controls the up and down movement of the drying rod by winding and unwinding the steel wire rope s, providing convenience for the clothes drying process.

[0053] In addition, a first fixed pulley r1 is installed on the side plate 40, which guides the direction of the wire rope s, ensuring that the wire rope can transmit power smoothly and steadily during operation. After the wire rope s is led out from the winding device 30, it passes around the first fixed pulley r1 and continues to extend forward. This combination of pulley and wire rope not only helps to optimize the mechanical structure of the clothes drying rack, but also improves the system's operating efficiency and reliability.

[0054] Furthermore, a weighing module 50 is installed on the base plate 10 between the winding device 30 and the first fixed pulley r1. The weighing module 50 is the core part of this system. It cleverly integrates the strain gauge load cell 51 with the rotating bracket 52, the thrust column 53 and the movable pulley 54, realizing the accurate measurement of the weight of clothes hanging on the drying rod.

[0055] More specifically: such as Figures 4 to 7 As shown, the rotating bracket 52 is one of the key components of the weighing module, and its middle part is rotatably mounted on the inner side of the base plate 10. This rotatable structure provides the basis for the transmission and conversion of force during the weighing process. The movable pulley 54 is mounted at the first end of the rotating bracket 52, while the thrust column 53 is mounted at the second end of the rotating bracket 52. This arrangement allows the wire rope s to rotate through the force on the movable pulley 54 when it passes through it, thereby causing the rotating bracket 52 to rotate and the thrust column 53 to move accordingly.

[0056] When clothes are hung on the drying rack, the steel wire rope s is subjected to the tension of the weight. This tension is transmitted to the rotating bracket 52 through the movable pulley 54, causing the rotating bracket 52 to rotate around its central axis. As the rotating bracket 52 rotates, the thrust column 53 presses against the strain gauge load cell 51.

[0057] This weighing system cleverly solves many problems associated with traditional clothes drying rack weighing systems by mounting the weighing module on the base plate of the main unit. It not only simplifies wiring and improves signal transmission stability, but also makes full use of the space on the base plate, avoiding the problem of insufficient space for the drying rods and side panels. Furthermore, this technology reduces the impact on the appearance of the clothes drying rack, improving the overall aesthetics of the product.

[0058] Meanwhile, by optimizing the mechanical structure and employing high-precision strain gauge load cells, this system can accurately measure the weight of clothes hanging on the drying rack, providing users with a more reliable and convenient clothes-drying experience. This innovative weighing system undoubtedly offers a new approach and solution for the clothes drying rack industry, possessing broad application prospects and market potential.

[0059] More specifically, the rotating bracket 52 is mounted inside the base plate 10 via an n-shaped bracket 60; the n-shaped bracket 60 includes a top plate 61 and two side plates 62. The n-shaped bracket 60 is a key component in the weighing system used to support and fix the rotating bracket 52. Its overall shape is "n", consisting of a top plate 61 and two side plates 62. This structure ensures sufficient strength while providing stable support and flexible rotation space for the rotating bracket 52.

[0060] The top plate 61 is the upper structure of the n-type bracket. Its main function is to connect to the base plate 10 via the first screw assembly, thereby firmly fixing the entire n-type bracket to the base plate 10. This connection method not only provides sufficient fixing strength but also facilitates installation and disassembly, making system maintenance and repair convenient.

[0061] Two side plates 62 are located on both sides of the top plate 61, and their main function is to provide support and rotation fulcrum for the rotating bracket 52. The inner side of the side plate 62 is provided with a pivot pin hole for installing the first pivot pin a1, thereby realizing the rotatable connection of the rotating bracket 52.

[0062] Furthermore, the rotating bracket 52 is one of the core components of the weighing system. Its key structural feature is that it allows rotation around a central axis when subjected to external force, thereby enabling the transmission and conversion of force. The middle part of the rotating bracket 52 is connected between the two side plates 62 of the n-type bracket 60 via a first axle pin a1. The first axle pin a1 passes through the axle pin hole of the side plate 62 and the central hole of the rotating bracket 52, allowing the rotating bracket 52 to rotate freely on the axle pin.

[0063] A certain floating gap f is formed between the top wall 521 of the rotating bracket 52 and the top plate 61 of the n-type bracket 60. The floating gap f allows the rotating bracket 52 to have a certain degree of freedom during rotation, so that it can automatically adjust its position when subjected to force to ensure uniform force transmission, and automatically reset when no force is applied.

[0064] The movable pulley 54 is installed at the first end of the rotating bracket 52 and passes through the through hole at the first end of the rotating bracket 52 via the second axle pin a2. The main function of the movable pulley 54 is to change the direction of the force on the wire rope s and transmit the tension of the wire rope to the rotating bracket 52. When the wire rope s is under tension, the movable pulley 54 will drive the rotating bracket 52 to rotate around the first axle pin a1.

[0065] The thrust column 53 is installed at the second end of the rotating bracket 52 and passes through the through hole at the second end of the rotating bracket 52 via the third shaft pin a3. The function of the thrust column 53 is to convert the rotation of the rotating bracket 52 into pressure on the load cell 51. When the rotating bracket 52 rotates, the thrust column 53 will press vertically upward against the elastic deformation part v of the strain gauge load cell 51, thereby triggering the sensor and generating a corresponding electrical signal.

[0066] During the weighing process, the wire rope s is led out from the winding device 30, passes the bottom of the second fixed pulley r2, tilts upwards past the movable pulley 54, and finally extends horizontally to the upper side of the first fixed pulley r1.

[0067] In addition, the strain gauge load cell 51 is the core measuring element of the entire weighing system, and its installation structure is crucial. It must ensure that the sensor is stable and reliable during operation, and that the force can be accurately transmitted to the elastic deformation part v of the sensor.

[0068] The strain gauge load cell 51 is mounted in a specially designed base g. The main function of the base g is to provide a stable support platform for the sensor, while protecting the sensor from external environmental influences such as dust and vibration.

[0069] The shape and size of the base g are specifically designed to perfectly fit the shape of the strain gauge load cell 51, ensuring that the sensor can maintain the correct posture and position after installation.

[0070] The strain gauge load cell 51 is secured to the base g by a second screw assembly. This screw connection not only provides sufficient strength but also ensures that the sensor will not shift or loosen during operation.

[0071] The base g is fixed to the inside of the base plate 10 by a third screw assembly. This dual fixing structure (the sensor is fixed inside the base, and the base is fixed to the base plate) further enhances the overall stability of the system, ensuring that the sensor remains stable even when subjected to large external forces during the operation of the clothes dryer.

[0072] Furthermore, such as Figure 8 As shown, a deformation window h is provided on the base plate 10, which is an important detail of the entire weighing system. The position and size of the deformation window h are precisely calculated to ensure that the elastic deformation part v of the strain gauge load cell 51 can be accurately positioned within the window.

[0073] The deformation window h provides sufficient space for the elastic deformation portion v of the strain gauge load cell 51, allowing it to deform freely under stress. This technique avoids the constraint of the base plate 10 on the elastic deformation portion v of the sensor, thereby ensuring that the sensor can accurately measure the pressure applied by the thrust column 53.

[0074] Preferably, a reinforcing base plate 11 is provided on the outer side of the base plate 10. The thickness of the base plate 10 is 0.5-0.8 mm. This thinner design helps to reduce the weight of the entire system and reduce material costs. The thickness of the reinforcing base plate 11 is 1.2-1.5 mm, which is greater than that of the base plate 10. Its main function is to provide additional structural strength. By combining plates of different thicknesses, a balance between lightweight and high strength is achieved. By providing a reinforcing base plate 11 on the outer side of the base plate 10, the compressive and bending resistance of the entire structure is significantly improved. Moreover, the addition of the reinforcing base plate 11 can effectively prevent the base plate 10 from deforming under stress, especially during the weighing process, ensuring the stability of the installation position of the weighing sensor.

[0075] In the weighing system, a floating gap f is provided between the top wall 521 of the rotating support 52 and the top plate 61 of the n-shaped support. The existence of this gap provides the necessary space for the dynamic movement of the rotating support 52, allowing it to flexibly adjust its position when subjected to force.

[0076] When the wire rope s passes through the movable pulley 54, the movable pulley 54 is subjected to a tension force from the wire rope. This tension force causes the rotating bracket 52 to rotate around its central axis (first shaft pin a1) in the first direction. During the rotation, the floating gap f on the first side of the rotating bracket 52 gradually decreases, while the floating gap f on the second side increases accordingly. This dynamic change allows the rotating bracket 52 to automatically adjust its posture according to the force conditions, ensuring a smoother and more uniform force transmission. In this technical solution, the first side of the rotating bracket 52 refers to the side where the thrust column 53 is located, while the second side of the rotating bracket 52 refers to the side where the movable pulley 54 is located.

[0077] As the rotating bracket 52 continues to rotate, the thrust column 53 on it gradually approaches the elastic deformation part v of the strain gauge load cell 51 and eventually applies pressure. When the thrust column 53 triggers the strain gauge load cell 51, the sensor converts the pressure into an electrical signal, thereby achieving accurate measurement of the weight of the suspended object.

[0078] Preferably, in this invention, based on the weight of the drying rod, the thrust column 53 will always keep the elastic deformation part v under pressure.

[0079] This floating gap f design not only improves the system's flexibility and adaptability, but also enhances the overall stability and reliability of the weighing system.

[0080] When the force applied to the movable pulley 54 decreases below a preset threshold, the rotating bracket 52 will automatically rotate in the opposite direction. During this process, the floating clearance f on the first side (the side where the thrust column 53 is located) of the rotating bracket 52 gradually increases, while the floating clearance f on the second side (the side where the movable pulley 54 is located) decreases accordingly.

[0081] This technology not only enables the system to automatically reset, but also effectively improves the reliability and service life of the weighing system, ensuring high accuracy and stability throughout multiple measurements.

[0082] Furthermore, it should be emphasized that in practical use, traditional weighing systems typically measure the total weight F of the object directly. 重 The weighing ratio mentioned here refers specifically to the weighing system at one end of the steel wire rope, not the entire clothes drying system. The following discussion will be based on this.

[0083] This system uses pulley systems and lever principles to reduce the actual measured force to F. 重 One-quarter of the original value. This technique enables the strain gauge load cell 51 to detect smaller force changes within the same strain range, thereby significantly improving the system's sensitivity.

[0084] This technological concept of reducing the measuring force is not only an optimization of traditional weighing systems but also a groundbreaking innovation in weighing sensor technology. By reducing the measuring force to one-quarter of the weight of the object, the weighing system significantly improves its sensitivity and measurement accuracy. Furthermore, through optimized structural design and mechanical principles, it achieves higher reliability and stability. This innovation not only has significant technological implications but also provides a new direction for the development of weighing sensor technology.

[0085] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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 utility model. Similarly, "first" and "second" are only for ease of understanding and have no other directional meaning, and cannot be considered as limitations on this utility model.

[0086] This invention describes a weighing system mounted on a main unit base plate. Specific examples are used to illustrate the principles and implementation methods of this invention. The descriptions of these embodiments are merely for the purpose of helping to understand this invention and its core concepts. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A weighing system mounted on the base plate of a main unit, characterized in that: include The base plate has a controller and winding device installed in the middle. The first fixed pulley is installed on the side plate, and the steel wire rope led out by the winding device passes around the first fixed pulley; A weighing module is installed on the base plate between the winding device and the first fixed pulley; The weighing module includes a strain gauge load cell, a thrust column and a movable pulley mounted on a rotating bracket; The rotating bracket is rotatably mounted on the inner side of the base plate in the middle; The movable pulley is installed at the first end of the rotating bracket, and the thrust column is installed at the second end of the rotating bracket; The steel wire rope passes through the movable pulley, causing the thrust column on the rotating bracket to press against the strain gauge load cell. The strain gauge load cell is connected to the controller.

2. The weighing system mounted on the base plate of the main unit according to claim 1, characterized in that: The rotating bracket is mounted on the inner side of the base plate via an n-type bracket. The n-type bracket includes a top plate and two side plates, with the top plate connected to the bottom plate by a first screw assembly; The middle part of the rotating bracket is connected between the two side plates by the first axle pin.

3. The weighing system mounted on the base plate of the main unit according to claim 1, characterized in that: The movable pulley is inserted into the through hole at the first end of the rotating bracket via a second shaft pin; The thrust column is inserted into the through hole at the second end of the rotating bracket via a third shaft pin.

4. The weighing system mounted on the base plate of the main unit according to claim 1, characterized in that: The rotating bracket has a second fixed pulley installed in the middle. The wire rope led out from the winding device passes through the bottom of the second fixed pulley, then tilts upwards, passes through the moving pulley, and then extends horizontally to the upper side of the first fixed pulley.

5. The weighing system mounted on the base plate of the main unit according to claim 1, characterized in that: The strain gauge load cell is installed inside the base, and the second screw assembly fixes the strain gauge load cell in the base; the third screw assembly fixes the base to the inside of the base plate. A deformation window is provided on the base plate; The elastic deformation part of the strain gauge load cell is located at the deformation window position; The thrust column acts on the elastic deformation part of the strain gauge load cell.

6. The weighing system mounted on the base plate of the main unit according to claim 1, characterized in that: A reinforcing base plate is provided on the outer side of the base plate. The thickness of the base plate is 0.5-0.8 mm, and the thickness of the reinforcing base plate is 1.2-1.5 mm.

7. A weighing system mounted on the base plate of a main unit, characterized in that: It includes a base plate, a controller, and a winding device, wherein the controller and the winding device are installed in the middle area of ​​the base plate; It also includes a first fixed pulley installed on the side plate, and a weighing module is provided on the base plate between the first fixed pulley and the winding device. The weighing module includes a strain gauge load cell, a rotating bracket, and a thrust column and a movable pulley respectively installed at both ends of the rotating bracket. The rotating bracket is mounted on the base plate at its middle position via an n-shaped bracket. The n-shaped bracket includes a top plate and two side plates, and a floating gap is formed between the top wall of the rotating bracket and the top plate. The wire rope led out by the winding device passes through the movable pulley. The movable pulley is subjected to force, which drives the rotating bracket to rotate in the first direction. The floating gap on the first side of the rotating bracket decreases, and the floating gap on the second side of the rotating bracket increases; until the thrust column on the rotating bracket triggers the strain gauge weighing sensor.

8. The weighing system mounted on the base plate of the main unit according to claim 7, characterized in that: When the force applied to the movable pulley is less than the preset value, the rotating bracket will rotate in the second direction, the floating gap on the first side of the rotating bracket will expand, the floating gap on the second side of the rotating bracket will shrink, and the thrust column will leave the strain gauge load cell until both ends of the rotating bracket return to the equilibrium state.

9. The weighing system mounted on the base plate of the main unit according to claim 7, characterized in that: The rotating bracket has a second fixed pulley installed in the middle. The wire rope led out from the winding device passes through the bottom of the second fixed pulley, then tilts upwards, passes through the moving pulley, and then extends horizontally to the upper side of the first fixed pulley.

10. A weighing system mounted on the base plate of a main unit according to claim 7, characterized in that: A deformation window is provided on the base plate; The elastic deformation part of the strain gauge load cell is located at the deformation window position; The thrust column acts on the elastic deformation part of the strain gauge load cell; A reinforcing base plate is provided on the outer side of the base plate. The thickness of the base plate is 0.5-0.8 mm, and the thickness of the reinforcing base plate is 1.2-1.5 mm.

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