Sensor weighing device

Abstract

The application provides a sensor weighing device, which comprises a weighing bearing part for supporting a weighed object, a plurality of transition parts and weighing isolation parts, the transition parts are arranged on the weighing isolation parts respectively, the weighing bearing part is arranged on the transition parts, and the transition parts connect the weighing bearing part and the weighing isolation parts; a plurality of weighing sensors are arranged at the bottom of the weighing isolation parts; and a weighing support part is arranged at the bottom of the weighing sensors for supporting the weighing sensors. The sensor weighing device of the application can simplify the force bearing of the weighing sensor, isolate the deformation of the weighing structure, reduce the influence of the deformation of the weighing structure on the force bearing state of the weighing sensor, and thus improve the weighing precision and use effect of the weighing product.

Description

Technical Field

[0001] The present invention relates to the field of weighing devices, in particular to a sensor weighing device. Background Art

[0002] In the prior art, during the weighing application process of a multi-sensor weighing system, along with the change of the weighing load or the long-term use of the weighing mechanical structure, the weighing mechanical structure may undergo mechanical structural deformation / deformation.

[0003] Due to the deformation / strain of the weighing mechanical structure, the stress state of the weighing sensor of the weighing system may differ or change compared to the stress state of the weighing sensor when the weighing system is calibrated, thereby introducing a certain weighing influence / error during the weighing application process, thereby reducing the weighing application accuracy and effect of the weighing system.

[0004] Existing weighing structures are usually divided into three layers: the bottom layer is the support layer, which is used to support and fix the weighing sensor; the middle layer is the weighing sensor layer, on which the weighing sensor is installed; and the top layer is the weighing bearing layer, which is installed on the weighing sensor layer and connected to the weighing sensor through a fixed or movable mechanism.

[0005] During the use of existing weighing structures, due to the different sizes, positions and force distributions of the weighing loads, the weighing load-bearing part is mechanically deformed or undergoes complex deformation, which makes it difficult to analyze and control the force state of the weighing sensor in the weighing mechanism, and thus difficult to eliminate the influence of the deformation or deformation of the weighing structure; and because the deformation of the weighing load-bearing part directly acts on the weighing sensor, the complex deformation or deformation of the weighing load-bearing part affects the force state of the weighing sensor in the horizontal direction, thereby introducing weighing errors.

[0006] Therefore, reducing the complexity of the deformation / deformation of the weighing mechanical structure and reducing the impact of the weighing load level deformation or deformation on the stress state of the weighing sensor will improve the weighing accuracy and use effect of the weighing product. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a sensor weighing device in order to overcome the defect that the weighing mechanical structure in the prior art is easily deformed / distorted.

[0008] The present invention solves the above technical problems through the following technical solutions:

[0009] A sensor weighing device, characterized in that the sensor weighing device comprises:

[0010] A weighing bearing part, used to support the object to be weighed;

[0011] A plurality of transition parts and weighing isolation parts, wherein the transition parts are respectively arranged on the weighing isolation parts, the weighing bearing parts are arranged on the transition parts, and the transition parts connect the weighing bearing parts and the weighing isolation parts;

[0012] A plurality of weighing sensors, wherein the weighing sensors are arranged at the bottom of the weighing isolation portion;

[0013] A weighing support portion is provided at the bottom of the weighing sensor and is used to support the weighing sensor.

[0014] According to one embodiment of the present invention, the number of the weighing sensors is at least three.

[0015] According to an embodiment of the present invention, the transition portion is made of elastic material.

[0016] According to one embodiment of the present invention, the transition block is fixedly connected to the weighing bearing portion and the weighing isolation portion.

[0017] According to one embodiment of the present invention, the transition portion adopts a movable mechanism, which includes an upper movable portion and a lower movable portion, wherein the upper movable portion is fixedly connected to the bottom of the weighing bearing portion, and the lower movable portion is fixedly connected to the top of the weighing isolation portion;

[0018] The lower end surface of the upper movable part is a concave surface, and the upper end surface of the lower movable part is a spherical surface. The spherical surface and the concave surface match each other. The upper movable part and the lower movable part form a relative movement between the weighing bearing part and the weighing isolation part through the relative movement between the spherical surface and the die.

[0019] According to one embodiment of the present invention, the transition portion adopts a movable mechanism, which includes an upper connecting portion, a movable portion and a lower connecting portion, wherein the upper connecting portion is fixedly connected to the bottom of the weighing bearing portion, and the lower connecting portion is fixedly connected to the top of the weighing isolation portion;

[0020] The movable portion is sandwiched between the upper connecting portion and the lower connecting portion, and the movable portion is in rolling connection with the upper connecting portion and the lower connecting portion, thereby forming a relative movement between the weighing bearing portion and the weighing isolation portion.

[0021] According to one embodiment of the present invention, a first groove is provided on the lower end surface of the upper connecting part, a second groove is provided on the upper end surface of the lower connecting part, the movable part is a first cylinder, and the upper and lower end surfaces of the first cylinder are first arc surfaces, and the first arc surfaces correspond to the first groove and the second groove respectively.

[0022] According to one embodiment of the present invention, the lower end surface of the upper connecting part is provided with an inner first circular arc groove, the upper end surface of the lower connecting part is set as a first plane, the movable part is set as a second cylinder, the upper end surface of the second cylinder is set as a second circular arc surface, and the lower end surface is set as a second plane, the second circular arc surface corresponds to the first circular arc groove, and the second plane corresponds to the first plane.

[0023] According to one embodiment of the present invention, the lower end surface of the upper connecting part is provided with an inner second arc groove, the upper end surface of the lower connecting part is provided with a third arc groove, and the movable part is configured as a sphere, which corresponds to and matches the second arc groove and the third arc groove.

[0024] According to one embodiment of the present invention, the weighing isolation portion is polygonal.

[0025] According to one embodiment of the present invention, the weighing isolation portion is circular, and a plurality of the transition portions are evenly distributed on the weighing isolation portion near the outer edge.

[0026] According to one embodiment of the present invention, the transition portion is located above the force bearing point of the weighing sensor.

[0027] According to one embodiment of the present invention, the weighing isolation part is a hollow frame structure.

[0028] According to one embodiment of the present invention, each side of the frame structure has a concave curved portion.

[0029] According to one embodiment of the present invention, the weighing isolation part and the weighing sensor are fixedly connected or movably connected.

[0030] The positive progress effect of the present invention is:

[0031] The sensor weighing device of the present invention is aimed at a multi-sensor weighing system. Through the design of a weighing bearing mechanism, the horizontal mechanical deformation / deformation of the weighing bearing mechanism is isolated, the force on the weighing sensor is simplified, and the influence of the horizontal mechanical deformation / deformation of the weighing bearing mechanism on the force state of the weighing sensor is reduced. At the same time, it fully ensures that the vertical deformation of the weighing bearing mechanism can be effectively transmitted to the weighing sensor, thereby improving the weighing accuracy and use effect of the weighing product. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which like reference numerals represent like features throughout, wherein:

[0033] Figure 1 This is a structural diagram of embodiment 1 of the sensor weighing device of the present invention.

[0034] Figure 2 for Figure 1 Cross-sectional view taken along line AA.

[0035] Figure 3 This is a structural diagram of embodiment 2 of the sensor weighing device of the present invention.

[0036] Figure 4 for Figure 3 Cross-sectional view taken along line BB.

[0037] Figure 5 This is a structural diagram of embodiment 3 of the sensor weighing device of the present invention.

[0038] Figure 6 This is a structural diagram of embodiment 4 of the sensor weighing device of the present invention.

[0039] Figure 7 This is a structural diagram of Example 5 of the sensor weighing device of the present invention.

[0040] Reference numerals

[0041] Weighing load-bearing part 10

[0042] Transition Section 20

[0043] Weighing isolation unit 30

[0044] Load cell 40

[0045] Weighing support part 50

[0046] Activities 60

[0047] Upper movable part 61

[0048] Lower movable part 62

[0049] Bend portion 31

[0050] Upper connecting portion 63

[0051] Activities Department 64

[0052] Lower connecting portion 65

[0053] First groove 631

[0054] First arc groove 632

[0055] Second arc groove 633

[0056] First arc surface 641

[0057] Second arc surface 642

[0058] Second plane 643

[0059] Second groove 651

[0060] First plane 652

[0061] The third arc groove 653 DETAILED DESCRIPTION

[0062] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0063] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings to represent the same or similar parts.

[0064] Furthermore, although the terms used in the present invention are selected from well-known and commonly used terms, some terms mentioned in the present specification may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description herein.

[0065] Furthermore, it is required that the present invention be understood not only by the actual terms used but also by the meanings lying behind each term.

[0066] Example 1:

[0067] Figure 1 This is a structural diagram of embodiment 1 of the sensor weighing device of the present invention. Figure 2 for Figure 1 Cross-sectional view taken along line AA.

[0068] like Figure 1 and Figure 2 As shown, the present invention discloses a sensor weighing device, which specifically includes a weighing load-bearing part 10, multiple transition parts 20, a weighing isolation part 30, multiple weighing sensors 40 and a weighing support part 50. The weighing load-bearing part 10 is mainly used to support the object to be weighed. The transition parts 20 are respectively arranged on the weighing isolation part 30, and the weighing load-bearing part 10 is arranged on the transition part 20, so that the transition part 20 connects the weighing load-bearing part 10 and the weighing isolation part 30, and transmits the weighing load-bearing force to the weighing isolation part 30. The weighing sensor 40 is arranged at the bottom of the weighing isolation part 30 for supporting the weighing isolation part 30. The weighing support part 50 is arranged at the bottom of the weighing sensor 40 for supporting the weighing sensor 40 and is a basic part for weighing.

[0069] Preferably, the weighing isolation portion 30 is polygonal, with the multiple transition portions 20 positioned at each vertex of the weighing isolation portion 30. Alternatively, the weighing isolation portion 30 is circular, with the multiple transition portions 20 evenly distributed near the outer edge of the weighing isolation portion 30. The shape of the polygon is determined by the positional distribution of the load cells 40.

[0070] Further preferably, in this embodiment, the weighing isolation section 30 is configured as a hollow frame structure. The weighing isolation section 30 has a frame structure at the location of the load cell 40 that has no or minimal resistance to deformation due to vertical forces, but does require a certain resistance to deformation due to horizontal forces. The frame of the weighing isolation section 30 requires lower resistance to horizontal deformation than the aforementioned design requirements.

[0071] More preferably, the transition portion 20 is located above the weighing isolation portion 30 corresponding to the position of the weighing sensor 40. The transition portion 20 is made of a soft material, such as an elastic material. For example, the transition portion 20 is preferably a rubber transition block. The shape of the rubber transition block can be directional, circular, or polygonal, and its shape is selected according to the shape of the weighing bearing portion 10 and the weighing isolation portion 30. The transition portion 20 is fixedly connected to the weighing bearing portion 10 and the weighing isolation portion 30, for example, the rubber transition block is glued to the weighing bearing portion 10 and the weighing isolation portion 30. Alternatively, in this embodiment, the transition portion 20 can also be made of a spring or a steel ball.

[0072] The above structure can be configured as follows: for example, the weighing bearing part 10 is configured as a square flat plate, for example, a square, and the weighing isolation part 30 is configured as a square frame structure, the structural strength of which is determined by the capacity of the scale. The transition part 20 uses four square rubber transition blocks, for example, cube rubber blocks, the size and thickness of which are determined by the capacity of the scale. The rubber transition blocks are glued to the weighing bearing part 10 and the weighing isolation part 30. For example, in this embodiment Figure 2 As shown, four rubber transition blocks are distributed above the four corners of the frame structure of the weighing isolation portion 30. Four load cells 40 are used to correspond to these blocks. The load cells 40 are located below the four corners of the frame structure of the weighing isolation portion 30. In this embodiment, the load cells 40 are connected to the frame structure of the weighing isolation portion 30 using a movable structure. The load cells 40 are connected to the weighing support portion 50 using bolts. The weighing support portion 50 is preferably square in shape when projected onto a horizontal plane.

[0073] In this embodiment, the number of the weighing sensors 40 is at least three, and the transition portion 20 is located above the force-bearing point of the weighing sensors 40 . The weighing sensors 40 here should be of the same type.

[0074] Example 2:

[0075] Figure 3This is a structural diagram of embodiment 2 of the sensor weighing device of the present invention. Figure 4 for Figure 3 Cross-sectional view taken along line BB.

[0076] like Figure 3 and Figure 4 As shown, the structure of this embodiment is basically the same as that of the first embodiment, the difference being that the transition portion adopts a movable mechanism 60, the movable mechanism 60 includes an upper movable portion 61 and a lower movable portion 62, the upper movable portion 61 is fixedly connected to the bottom of the weighing bearing portion 10, and the lower movable portion 62 is fixedly connected to the top of the weighing isolation portion 30.

[0077] At the same time, the lower end surface of the upper movable portion 61 is configured as a concave surface, and the upper end surface of the lower movable portion 62 is configured as a spherical surface. The spherical surface and the concave surface match each other. The relative movement between the upper movable portion 61 and the lower movable portion 62 between the spherical surface and the concave mold forms the relative movement between the weighing bearing portion 10 and the weighing isolation portion 30. The movable mechanism has the ability to self-reset horizontally.

[0078] The above structure can be configured, for example, as a square flat plate for the weighing bearing portion 10 and a square frame structure for the weighing isolation portion 30. The structural strength of the structure is determined by the capacity of the scale. The transition portion utilizes the aforementioned movable mechanism 60, the size and thickness of which are determined by the capacity of the scale. The movable mechanism 60 is fixedly connected to the weighing bearing portion 10 and the weighing isolation portion 30. For example, in this embodiment, the transition portion utilizes four movable mechanisms 60, which are connected to the weighing bearing portion 10 and the weighing isolation portion 30 by welding.

[0079] In this embodiment, the number of the weighing sensors 40 is at least three, and the movable mechanism 60 is located above the force-bearing point of the weighing sensors 40 . The weighing sensors 40 here should be of the same type.

[0080] Example 3:

[0081] Figure 5 This is a structural diagram of embodiment 3 of the sensor weighing device of the present invention.

[0082] like Figure 5As shown, the structure of this embodiment is basically the same as that of the second embodiment, except that the transition portion uses a movable mechanism 60, which includes an upper connecting portion 63, a movable portion 64, and a lower connecting portion 65. The upper connecting portion 63 is fixedly connected to the bottom of the weighing load-bearing portion 10, and the lower connecting portion 65 is fixedly connected to the top of the weighing isolation portion 30. The movable portion 64 is sandwiched between the upper connecting portion 63 and the lower connecting portion 65, and the movable portion 64 is connected to the upper connecting portion 63 and the lower connecting portion 65 in a rolling manner, thereby forming relative movement between the weighing load-bearing portion 10 and the weighing isolation portion 30. The movable mechanism has horizontal self-reset capability.

[0083] Specifically, in this embodiment, a first groove 631 is provided on the lower end surface of the upper connecting portion 63, a second groove 651 is provided on the upper end surface of the lower connecting portion 65, the movable portion 64 is a first cylinder, and the upper and lower end surfaces of the first cylinder are first arc surfaces 641, and the first arc surface 641 corresponds to the first groove 631 and the second groove 651 respectively.

[0084] Example 4:

[0085] Figure 6 This is a structural diagram of embodiment 4 of the sensor weighing device of the present invention.

[0086] like Figure 6 As shown, the structure of this embodiment is basically the same as that of the third embodiment, and the difference is that: in this embodiment, an inner first arc groove 632 is provided on the lower end surface of the upper connecting portion 63, the upper end surface of the lower connecting portion 65 is set as a first plane 652, the movable portion 64 is set as a second cylinder, the upper end surface of the second cylinder is set as a second arc surface 642, and the lower end surface is set as a second plane 643, the second arc surface 642 corresponds to the first arc groove 632, and the second plane 643 corresponds to the first plane 652.

[0087] Embodiment 5:

[0088] Figure 7 This is a structural diagram of Example 5 of the sensor weighing device of the present invention.

[0089] like Figure 7 As shown, the structure of this embodiment is basically the same as that of the third embodiment, the difference being that: in this embodiment, an inner second circular arc groove 633 is provided on the lower end surface of the upper connecting portion 63, a third circular arc groove 653 is provided on the upper end surface of the lower connecting portion 65, and the movable portion 64 is configured as a sphere, which corresponds to and matches the second circular arc groove 633 and the third circular arc groove 653.

[0090] Of course, the structures of the movable mechanisms in the above-mentioned embodiments 2 to 5 are merely examples, and the solutions of the present application are not limited by the above-mentioned embodiments. As long as the movable mechanisms have the function of horizontal self-reset, the technical solutions of the present application can be realized and fall within the scope of protection of the present application. According to the structural descriptions of the above-mentioned embodiments 1 to 5, the weighing bearing part 10 of the present invention has a certain application stiffness / strength to ensure that the weighing bearing part does not deform in a manner that affects the application / visibility during the weighing application, thereby reducing the stiffness / strength requirements of the weighing bearing part.

[0091] The transition portion 20 in the present invention is used to connect the two parts of the weighing bearing part 10 and the weighing isolation part 30, reducing the constraint of the horizontal deformation or deformation of the weighing bearing part 10, thereby reducing the horizontal deformation or deformation of the weighing bearing part 10 on the horizontal force of the weighing isolation part 30, and can effectively transfer the weighing bearing force to the weighing isolation part 30, thereby simplifying the design of the weighing isolation part and reducing the design requirements of the weighing isolation part 30.

[0092] The transition part 20 is designed with soft materials or movable mechanisms to reduce the constraints between the weighing bearing part 10 and the weighing isolation part 30, thereby reducing the deformation / deformation force introduced by the deformation / deformation of the weighing bearing part 10, and further reducing the impact of the deformation / deformation of the weighing bearing part 10 on the weighing isolation part 30.

[0093] Preferably, the distribution of soft materials or movable mechanisms converts the surface force of the weighing isolation portion 30 into a point force on the weighing isolation portion 30, thereby simplifying the force conditions on the weighing isolation portion 30. Furthermore, the distribution of soft materials / movable mechanisms is arranged above or near the force points of the load cell 40 on the weighing isolation portion 30 to reduce the strength / rigidity requirements of the design of the weighing isolation portion 30. Of course, the transition portion 20 described herein is preferably a structure with a certain degree of self-reset capability.

[0094] In the present invention, the weighing isolation part 30 adopts a frame structure. The weighing isolation part 30 is mainly used to isolate the horizontal deformation of the weighing bearing mechanism and the influence of deformation on the stress state of the weighing sensor, so as to keep the stress state of the weighing sensor stable. Preferably, the shape of the frame structure of the weighing isolation part 30 is determined by the position of the force point of the weighing sensor 40 and the position of the force transmission point from the transition part 20 to the weighing isolation part 30. The structural strength / rigidity of the frame structure of the weighing isolation part 30 is determined by the position of the force point of the transition part 20 and the position of the force point of the weighing sensor 40 and the size of the weighing force overload. The frame of the weighing isolation part 30 requires a lower resistance to horizontal deformation than the above-mentioned design requirements.

[0095] In this embodiment, each side of the frame structure of the weighing isolation part 30 has a concave curved portion 31 to increase the elasticity of the frame structure. Figure 3The four corners of the frame structure of the weighing isolation portion 30 are shown. Four load cells 40 are also used to correspond to these, and the load cells 40 are arranged below the four corners of the frame structure of the weighing isolation portion 30. In this embodiment, the load cells 40 are connected to the frame structure of the weighing isolation portion 30 using a movable structure, and the load cells 40 are connected to the weighing support portion 50 using bolts. Here, the weighing support portion 50 can preferably have a square projection on a horizontal plane.

[0096] The present invention provides multiple load cells 40. The load cells 40 are flexibly connected to the weighing isolation portion 30, preferably using a straight-sided frame to provide the frame structure of the weighing isolation portion 30 with a certain horizontal support force. This flexibly connected connection provides horizontal self-reset capability. Alternatively, the load cells 40 are fixedly connected to the weighing isolation portion 30, preferably using a curved-sided frame to relieve horizontal stress. In this embodiment, the weighing support portion 50 and the load cells 40 are preferably fixedly connected.

[0097] When the weighing load or the long-term use of the weighing equipment causes the weighing load-bearing part to deform / deform, the deformation / deformation of the weighing load-bearing part 10 is transmitted to the weighing isolation part through the transition part 20. Since the transition part 20 is designed with soft materials, the horizontal influence of the complex mechanical deformation / deformation of the weighing load-bearing surface is released / reduced by the material deformation / structural deformation of the transition part 20, thereby reducing the influence of the deformation / deformation of the weighing load-bearing part 10 on the weighing isolation part 30.

[0098] Because the force on the load-bearing portion is transmitted to the weighing isolation portion 30 via the transition portion 20, the material / structural distribution of the transition portion 20 will change the force-bearing mode of the weighing isolation portion 30, thereby simplifying the force-bearing conditions of the isolation portion, thereby reducing the design requirements of the weighing isolation portion 30. Because the force-bearing conditions of the weighing isolation portion 30 are simple and clear, the deformation / deformation of the weighing isolation portion can be effectively reduced through the isolation portion design, and targeted design can be performed to reduce the impact of the deformation / deformation of the isolation portion on the weighing application, thereby achieving the goal of both reducing the design requirements for the isolation portion and effectively eliminating the impact of the deformation / deformation of the weighing structure on the weighing application.

[0099] In summary, the sensor weighing device of the present invention simplifies the force on the weighing sensor, isolates the deformation / deformation of the weighing structure, and reduces the influence of the deformation / deformation of the weighing structure on the force state of the weighing sensor, thereby improving the weighing accuracy and use effect of the weighing product.

[0100] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A sensor weighing device, characterized in that: The sensor weighing device comprises: A weighing bearing part, used to support the object to be weighed; A plurality of transition parts and weighing isolation parts, wherein the transition parts are respectively arranged on the weighing isolation parts, the weighing bearing parts are arranged on the transition parts, and the transition parts connect the weighing bearing parts and the weighing isolation parts; A plurality of weighing sensors, wherein the weighing sensors are arranged at the bottom of the weighing isolation portion; The transition portion is located above the force-bearing point of the weighing sensor, and the weighing isolation portion is a hollow frame structure; The weighing isolation portion has no or less vertical force deformation resistance at the position of the weighing sensor, and has horizontal force deformation resistance; a weighing support portion, the weighing support portion being arranged at the bottom of the weighing sensor and being used to support the weighing sensor; The transition part adopts a movable mechanism, which includes an upper movable part and a lower movable part. The upper movable part is fixedly connected to the bottom of the weighing bearing part, and the lower movable part is fixedly connected to the top of the weighing isolation part. The lower end surface of the upper movable part is a concave surface, and the upper end surface of the lower movable part is a spherical surface. The spherical surface and the concave surface match each other. The upper movable part and the lower movable part form a relative movement between the weighing bearing part and the weighing isolation part through the relative movement between the spherical surface and the concave surface.

2. A sensor weighing device, characterized in that: The sensor weighing device comprises: A weighing bearing part, used to support the object to be weighed; A plurality of transition parts and weighing isolation parts, wherein the transition parts are respectively arranged on the weighing isolation parts, the weighing bearing parts are arranged on the transition parts, and the transition parts connect the weighing bearing parts and the weighing isolation parts; A plurality of weighing sensors, wherein the weighing sensors are arranged at the bottom of the weighing isolation portion; The transition portion is located above the force-bearing point of the weighing sensor, and the weighing isolation portion is a hollow frame structure; The weighing isolation portion has no or less vertical force deformation resistance at the position of the weighing sensor, and has horizontal force deformation resistance; a weighing support portion, the weighing support portion being arranged at the bottom of the weighing sensor and being used to support the weighing sensor; The transition part adopts a movable mechanism, which includes an upper connecting part, a movable part and a lower connecting part. The upper connecting part is fixedly connected to the bottom of the weighing bearing part, and the lower connecting part is fixedly connected to the top of the weighing isolation part. The movable portion is sandwiched between the upper connecting portion and the lower connecting portion, and the movable portion is in rolling connection with the upper connecting portion and the lower connecting portion, thereby forming a relative movement between the weighing bearing portion and the weighing isolation portion.

3. The sensor weighing device according to claim 1 or 2, characterized in that: The number of the weighing sensors is at least three.

4. The sensor weighing device according to claim 3, characterized in that: The transition portion is made of elastic material.

5. The sensor weighing device according to claim 4, characterized in that: The transition portion is fixedly connected to the weighing bearing portion and the weighing isolation portion.

6. The sensor weighing device according to claim 2, characterized in that: The lower end surface of the upper connecting part is provided with a first groove, the upper end surface of the lower connecting part is provided with a second groove, the movable part is a first cylinder, the upper and lower end surfaces of the first cylinder are first arc surfaces, and the first arc surfaces correspond to the first groove and the second groove respectively.

7. The sensor weighing device according to claim 2, wherein: The lower end surface of the upper connecting part is provided with an inner first arc groove, the upper end surface of the lower connecting part is set as a first plane, the movable part is set as a second cylinder, the upper end surface of the second cylinder is set as a second arc surface, and the lower end surface is set as a second plane, the second arc surface corresponds to the first arc groove, and the second plane corresponds to the first plane.

8. The sensor weighing device according to claim 2, wherein: The lower end surface of the upper connecting part is provided with an inner second arc groove, the upper end surface of the lower connecting part is provided with a third arc groove, the movable part is configured as a sphere, and the sphere corresponds to and matches the second arc groove and the third arc groove.

9. The sensor weighing device according to claim 1 or 2, characterized in that: The weighing isolation portion is polygonal.

10. The sensor weighing device according to claim 1 or 2, characterized in that: The weighing isolation portion is circular, and a plurality of transition portions are evenly distributed on the weighing isolation portion near the outer edge.

11. The sensor weighing device according to claim 1 or 2, characterized in that: Each side of the frame structure has a concave curved portion.

12. The sensor weighing device according to claim 1 or 2, characterized in that: The weighing isolation part and the weighing sensor are fixedly connected or movably connected.

Images