Torsion ring sensor

Abstract

The invention provides a torsion ring sensor, which comprises a torsion ring elastic body and a plurality of resistance strain gauges, and is characterized in that the torsion ring elastic body comprises a loading end, an elastic body inner ring and an elastic body outer ring which are sequentially sleeved from inside to outside; the loading end and the elastomer inner ring are connected through a plurality of first spokes, so that a plurality of first through areas are separated between the loading end and the elastomer inner ring; the elastic body inner ring and the elastic body outer ring are connected through a plurality of second spokes, so that a plurality of second through areas are separated between the elastic body inner ring and the elastic body outer ring; the resistance strain gauges are respectively fixed on the upper and lower surfaces of the elastomer inner ring. According to the method, the sensitivity requirement of the small-capacity sensor is met by reasonably removing web materials (processed into through holes) on the inner side and the outer side of the strain ring (inner ring). The torsion ring sensor can be expanded to a smaller capacity, and the circuit board is placed in the elastic body, so that the limitation of small capacity is broken through, and the circuit board is prevented from being placed on the outer side of the elastic body.

Description

Technical Field

[0001] This invention relates to the field of weighing sensors, and in particular to a torsion ring sensor. Background Technology

[0002] In existing technologies, torsion ring load cells are a type of high-precision load cell. The unique torsion ring structure of a torsion ring load cell minimizes the impact of lateral forces, off-center loads, impacts, and boundary mechanical disturbances on its weighing accuracy.

[0003] Torsion ring load cells are cylindrical in shape, welded and sealed, and have an IP68 protection rating. Therefore, they are widely used in the chemical, pharmaceutical, and food industries, and are suitable for belt scales, platform scales, quantitative packaging scales, and tank scales.

[0004] Because digital sensors can achieve digital compensation, including for sensitivity, linearity, hysteresis, and temperature performance, they can easily communicate with corresponding instruments or other peripherals through communication protocols. Therefore, digital sensors are finding increasing market applications. In recent years, there has been a new market demand for small-capacity digital torsion ring sensors.

[0005] Typically, the capacity of a torsion ring sensor is related to the outer diameter of the elastomer and the thickness of the torsion ring. Generally, torsion ring sensors with smaller capacities have smaller outer diameters of the elastomer and smaller torsion ring cross-sectional thicknesses, but there are also lower limits to the thickness.

[0006] Meanwhile, due to the complexity of digital sensor circuitry and the relatively large size of the circuit board, some manufacturers solder a metal box onto the side of the torsion ring's outer circumference and then place the circuit board inside. This structure is complex to manufacture, costly, and aesthetically unappealing. Therefore, the minimum capacity of torsion ring sensors currently on the market is limited by this structure.

[0007] For small-capacity digital torsion ring sensors, a new torsion ring elastomer structure needs to be designed to simultaneously meet the sensitivity requirements of small-capacity sensors and the requirements for placing circuit boards.

[0008] In view of this, the inventors of this application have designed a torsion ring sensor in order to overcome the above-mentioned technical problems. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to overcome the defects of existing torsion ring sensors, such as complex structure and process, high cost, and minimum capacity limited by structure, and to provide a torsion ring elastomer and a torsion ring sensor including the same.

[0010] The present invention solves the above-mentioned technical problems through the following technical solution:

[0011] A torsion ring sensor, characterized in that the torsion ring sensor includes a torsion ring elastomer and a plurality of resistance strain gauges, wherein the torsion ring elastomer includes a loading end, an inner ring of the elastomer and an outer ring of the elastomer arranged sequentially from the inside to the outside.

[0012] The loading end and the inner ring of the elastic body are connected by a plurality of first spokes, thereby separating a plurality of first through regions between the loading end and the inner ring of the elastic body;

[0013] The inner ring of the elastic body and the outer ring of the elastic body are connected by a plurality of second spokes, thereby separating a plurality of second through regions between the inner ring of the elastic body and the outer ring of the elastic body;

[0014] The resistance strain gauges are respectively fixed on the upper and lower surfaces of the inner ring of the elastic body.

[0015] According to one embodiment of the present invention, the corresponding first spoke and second spoke are located on the same straight line.

[0016] According to one embodiment of the present invention, a first end of the first spoke is connected to the inner ring of the elastic body, and a second end is connected to the loading end, wherein the thickness at the second end connection of the first spoke is less than the thickness at the first end connection of the first spoke; and / or,

[0017] The first end of the second spoke is connected to the inner ring of the elastic body, and the second end is connected to the outer ring of the elastic body. The thickness of the second end connection of the second spoke is less than the thickness of the first end connection of the second spoke.

[0018] According to one embodiment of the present invention, when the loading end is loaded, the inner ring of the elastic body is twisted, and the angle between the vertical section passing through the center of the inner ring of the elastic body and the horizontal direction forms a twist angle;

[0019] On the inner ring of the elastic body, the torsion angle at the first spoke and the second spoke is the maximum torsion angle, and the resistance strain gauge is disposed at the position where the torsion angle is the minimum.

[0020] According to one embodiment of the present invention, the torsion ring sensor further includes a circuit board, wherein the lower end face of the loading end and the outer ring of the elastic body form a receiving space, and the circuit board is disposed within the receiving space.

[0021] According to one embodiment of the present invention, the center of the wire grid of the resistance strain gauge is located at the intersection of the angle bisector of the angle formed by two adjacent first spokes or two second spokes and the inner ring of the elastic body.

[0022] According to one embodiment of the present invention, the resistance strain gauges located on the upper and lower surfaces of the inner ring of the elastic body are aligned vertically with each other.

[0023] According to one embodiment of the present invention, the upper part of the loading end is provided with a non-through threaded hole, or a bearing ball socket, or a bearing ball head.

[0024] According to one embodiment of the present invention, the radial width of the inner ring of the elastic body is 4 mm to 8 mm.

[0025] According to one embodiment of the present invention, the areas of the first through region and the second through region account for 55% to 95% of the total area, wherein the total area includes the areas of the first through region and the second through region, as well as the areas of the first spoke and the second spoke.

[0026] The positive and progressive effects of this invention are as follows:

[0027] The torsion ring sensor of the present invention has the following advantages:

[0028] 1. By reasonably removing the inner and outer web material of the strain ring (inner ring) (processing it into a through area), the sensitivity requirements of small-capacity sensors can be met.

[0029] 2. The bearing end is designed with a non-through hole to fix the circuit board to the lower surface of the bearing end;

[0030] Third, it can expand the torsion ring sensor to a smaller capacity and place the circuit board inside the elastomer, thereby breaking through the small capacity limitation and avoiding placing the circuit board on the outside of the elastomer. Attached Figure Description

[0031] The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features, wherein:

[0032] Figure 1 This is a schematic diagram of the torsion ring sensor of the present invention.

[0033] Figure 2 This is a top view of the torsion ring sensor of the present invention.

[0034] Figure 3 This is a bottom view of the torsion ring sensor of the present invention.

[0035] Figure 4 This is a schematic diagram of the torsion angle in the torsion ring sensor of the present invention.

[0036] Figure 5 This is a schematic diagram showing the distribution of the torsion angle on the upper surface of the elastic inner ring in the torsion ring sensor of the present invention.

[0037] Figure 6 This is a schematic diagram of the structure of the torsion ring sensor of the present invention, which has six first spokes and six second spokes.

[0038] Figure 7 This is a schematic diagram of the structure of the torsion ring sensor of the present invention, which has eight first spokes and eight second spokes.

[0039] Figure 8 This is a schematic diagram of the spoke structure in the torsion ring sensor of the present invention. Figure 1 .

[0040] Figure 9 This is a schematic diagram of the spoke structure in the torsion ring sensor of the present invention. Figure 2 .

[0041] Figure 10 This is a schematic diagram of the loading end structure in the torsion ring sensor of the present invention. Figure 1 .

[0042] Figure 11 This is a schematic diagram of the loading end structure in the torsion ring sensor of the present invention. Figure 2 .

[0043] [Attached image labels]

[0044] Torsion ring elastomer 10

[0045] Resistance strain gauge 20

[0046] Circuit board 30

[0047] Cable connector 40

[0048] Upper sealing cover plate 50

[0049] Lower sealing cover plate 60

[0050] Fastener 70

[0051] Sleeve 71

[0052] Loading end 11

[0053] 12 elastic inner ring

[0054] Elastic outer ring 13

[0055] First spoke 14

[0056] First Through Area A

[0057] Second spoke 15

[0058] Second Through Area B

[0059] The first end of the first spoke 141

[0060] The second end of the first spoke 142

[0061] The first end of the second spoke 151

[0062] The second end of the second spoke 152

[0063] Mounting hole 111

[0064] Threaded hole 112

[0065] Bearing ball socket 113

[0066] 114 bearing ball head

[0067] Bolt hole 131 Detailed Implementation

[0068] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0069] Embodiments of the invention will now be described in detail with reference to the accompanying drawings. Preferred embodiments of the invention will now be described in detail, examples of which are shown in the drawings. Wherever possible, the same reference numerals will be used in all the drawings to denote the same or similar parts.

[0070] Furthermore, although the terminology used in this invention is selected from commonly known and used terms, some terms mentioned in this specification may have been selected by the applicant in his or her judgment, and their detailed meanings are explained in the relevant sections of the description herein.

[0071] Furthermore, the invention should be understood not only through the actual terminology used, but also through the meaning implied by each term.

[0072] Figure 1 This is a schematic diagram of the structure of a first embodiment of the torsion ring sensor of the present invention. Figure 2 This is a top view of a first embodiment of the torsion ring sensor of the present invention. Figure 3 This is a bottom view of a first embodiment of the torsion ring sensor of the present invention.

[0073] like Figures 1 to 3 This invention discloses a torsion ring sensor, comprising a torsion ring elastomer 10, multiple resistance strain gauges 20, a circuit board 30, a cable connector 40, an upper sealing cover 50, and a lower sealing cover 60. The torsion ring elastomer 10 includes a loading end 11, an inner elastic ring 12, and an outer elastic ring 13, sequentially arranged from the inside out. Multiple first spokes 14 connect the loading end 11 and the inner elastic ring 12, thereby separating multiple first through regions A (e.g., formed using a hollowing-out processing technique) between them.

[0074] Similarly, multiple second spokes 15 connect the inner ring 12 and the outer ring 13 of the elastic body, thereby separating multiple second through regions B between the inner ring 12 and the outer ring 13 of the elastic body (for example, the second through regions B are formed by a hollowing process).

[0075] For example, in this embodiment, four first spokes 14 are uniformly connected between the loading end 11 and the inner ring 12 of the elastic body, dividing the circumference between the loading end 11 and the inner ring 12 of the elastic body into eight uniformly distributed first through regions A. At the same time, four second spokes 15 are uniformly connected between the inner ring 12 and the outer ring 13 of the elastic body, dividing the circumference between the inner ring 12 and the outer ring 13 of the elastic body into eight second through regions B.

[0076] In existing technologies, twisted ring elastomers are not hollowed out or perforated; resistance strain gauges are attached obliquely and staggered, and their capacity is changed by altering the thickness of the twisted ring elastomer. However, with this structure, once the thickness of the twisted ring elastomer is reduced to a certain extent, the thickness cannot be further reduced, and therefore the capacity cannot be further reduced.

[0077] Therefore, by designing a hollowed-out structure, this application can further reduce the capacity of the torsion ring elastomer 10, setting it as a ring structure with resistance strain gauges symmetrically arranged on the upper and lower surfaces. When the load-bearing end is loaded, the resistance strain gauges on the upper surface of the torsion ring elastomer are compressed, while the resistance strain gauges on the lower surface are stretched, forming a tangential strain distribution on the strain ring, resulting in a uniform strain distribution.

[0078] Preferably, the corresponding first spoke 14 and second spoke 15 are positioned on the same straight line. Further, the first spoke 14, the second spoke 15 and the inner ring 12 of the elastic body can be integrally formed, with the first spoke 14 and the second spoke 15 located on the inner and outer sides of the inner ring 12 of the elastic body, respectively.

[0079] Each first spoke 14 and second spoke 15 can form a spoke structure. In this embodiment, the first spoke 14 and second spoke 15 are located on the inner and outer sides of the inner ring 12 of the elastic body, respectively. Alternatively, the first spoke 14 and second spoke 15 can be configured as a single integral spoke, connecting the loading end 11, the inner ring 12 of the elastic body, and the outer ring 13 of the elastic body. The first spoke 14, the second spoke 15 (or both configured as a single integral spoke structure), the inner ring of the elastic body, the loading end, and the outer ring of the elastic body can be integrally machined, meaning the entire torsion ring elastomer can be integrally machined. Of course, this structural form is only an example and is not intended to limit the design. Other processing methods can also be used, as long as the above-described structure of the torsion ring elastomer is achieved.

[0080] The first end 141 of the first spoke 14 is connected to the inner ring 12 of the elastic body, and the second end 142 is connected to the loading end 11. At this time, the thickness at the connection between the second end 142 of the first spoke 14 and the loading end 11 is set to be less than the thickness at the connection between the first end 141 of the first spoke 14 and the inner ring 12 of the elastic body.

[0081] And / or, the first end 151 of the second spoke 15 is connected to the inner ring 12 of the elastic body, the second end 152 is connected to the outer ring 13 of the elastic body, and the thickness at the connection between the second end 152 of the second spoke 15 and the outer ring 13 of the elastic body is set to be less than the thickness at the connection between the first end 151 of the second spoke 15 and the inner ring 12 of the elastic body.

[0082] This structural design allows for greater deformation of the second segment 142 of the first spoke 14 and the second end 152 of the second spoke 15 when the loading end 11 moves downwards. By adjusting the thickness of the connecting structure, thinner areas (such as the second segment 142 of the first spoke 14 and the second end 152 of the second spoke 15) can deform significantly, resulting in tangential compression and tension of the inner ring 12 of the elastic body, thus achieving overall deformation.

[0083] like Figure 4 As shown, when the sensor presses against the load, i.e. when the loading end 11 is loaded, the inner ring 12 of the elastic body twists (for example, from horizontal to downward tilt). The angle between the vertical section passing through the center of the inner ring 12 and the horizontal direction forms a twist angle α. After the inner ring 12 of the elastic body twists, the twist angle is different at different positions.

[0084] like Figure 5 As shown, when fully loaded, the torsion angle α reaches its maximum value β. For sensors without cutouts on the elastic body, under a certain load, the torsion angle of the strain ring is basically uniformly distributed in the circumferential direction, as shown in the figure. Figure 5 As shown by the solid line. However, for the sensor with a cutout in the elastomer in this application, the torsion angle of the strain ring (i.e., the inner ring of the elastomer) varies regularly in the circumferential direction under a certain load. For example, for a sensor with four spokes (four first spokes 14 and four second spokes 15) evenly distributed in the circumferential direction, under full-scale load, the torsion angle of its strain ring (i.e., the inner ring of the elastomer) is distributed in the circumferential direction as follows. Figure 5 As shown by the dashed line.

[0085] Four peaks (high points, close to the β value in the figure) are located at the positions where spokes are set, and four troughs (low points, close to the β2 value in the figure) are located at the cutout positions, where β2 < β. Therefore, the strain gauge is preferably placed at the trough position. Thus, on the elastic inner ring 12, the torsion angle at the first spoke 14 and the second spoke 15 corresponding to a set is the maximum torsion angle (e.g., ...). Figure 5 The β value), the torsion angle at 20° of the resistance strain gauge is the minimum torsion angle (e.g., Figure 5 The β2 value is the value at which the resistance strain gauge 20 is positioned at the point where the torsion angle is minimum. The number of spokes evenly distributed on the circumference (each set of spokes includes the first and second spokes, or a single spoke connecting the loading end, the inner ring of the elastic body, and the outer ring of the elastic body) corresponds to the number of peaks and troughs, which are matched to each other.

[0086] Specifically, the first spoke 14 and the second spoke 15 here are preferably flexible structures with the minimum thickness as thin as possible, for example, as small as 0.3 mm for small capacity sensors. Their function is to isolate the bending torque from being transmitted to the elastic inner ring 12 of the strain gauge 20.

[0087] Resistance strain gauges 20 are fixed to the upper and lower surfaces of the elastic inner ring 12, respectively. When a load is applied, the resistance strain gauge 20 located on the upper surface of the elastic inner ring 12 is subjected to tangential compression, and its resistance increases. The resistance strain gauge 20 located on the lower surface of the elastic inner ring 12 is subjected to tangential tension, and its resistance decreases.

[0088] The center of the wire grid of each resistance strain gauge 20 is located at the intersection of the angle bisector of the angle formed by two adjacent first spokes 14 or two second spokes 15 and the inner ring 13 of the elastic body. At the same time, the resistance strain gauges 20 located on the upper and lower surfaces of the inner ring 12 of the elastic body are aligned vertically with each other.

[0089] For example, in this application, eight resistance strain gauges 20 are provided, with four evenly distributed on the upper and lower surfaces of the elastic body ring 12.

[0090] Of course, the number of resistance strain gauges 20 varies depending on the number of the first spokes 14 and the second spokes 15. For example, as Figure 6 As shown, when the number of the first spokes 14 and the second spokes 15 increases to 6, the number of the first through area A and the second through area B increases accordingly.

[0091] For example, such as Figure 7 As shown, when the number of the first spokes 14 and the second spokes 15 increases to 8, the number of the first through area A and the second through area B increases accordingly.

[0092] Furthermore, regarding the relationship between the number of strain gauges and the spokes, generally speaking, the number of strain gauges is mostly 4 (forming a Wheatstone bridge circuit) or 8 (two strain gauges are connected in series to form a Wheatstone bridge circuit; the embodiment of this application has 8 strain gauges).

[0093] Of course, theoretically, it is possible to set 12 or 16 strain gauges, depending on the product's input and output impedance requirements and the acceptable cost. The number of strain gauges does not actually need to be proportional to the number of spokes. For example, when the number of spokes increases to 8, there can still be 4 strain gauges on the upper and lower inner rings, evenly distributed on the circumference (leaving the other 4 positions empty).

[0094] like Figure 3 Combination Figure 1 As shown, the lower end face of the loading end 11 and the outer ring 13 of the elastic body form a receiving space C. The circuit board 30 is disposed within the receiving space C, that is, the circuit board 30 is located within the elastic body. At least one mounting hole 111, such as a screw hole, is provided on the lower end face of the loading end 11, and the circuit board 30 is fixed to the mounting hole 111 by the fastener 70. A sleeve 71 is also provided between the bottom of the loading end 11 and the circuit board 30, and the sleeve 71 is fitted onto the fastener 70 to isolate the loading end 11 and the circuit board 30.

[0095] The wires connecting the resistance strain gauge 20 are connected to the input terminal of the circuit board 30, and the output terminal of the circuit board 30 is connected to the cable connector 40.

[0096] like Figure 8 As shown, the first spoke 14 and the second spoke 15 can be configured as fan-shaped, which provides better load-bearing capacity than rectangular spokes. Furthermore, considering the practical consideration of the milling cutter radius, fan-shaped spokes, such as... Figure 9 As shown, the side milling cutters on both sides of the first spoke 14 and the second spoke 15 can be machined into an arc shape.

[0097] Additionally, a non-through threaded hole 112 or a bearing ball socket 113 (such as) is provided at the upper part of the loading end 11. Figure 10 As shown), or bearing ball head 114 (as shown) Figure 11 (As shown), used for loading.

[0098] Preferably, in this embodiment, the radial width of the inner ring 12 of the elastic body is preferably 4mm to 8mm. For example, the radial width can be selected as 4mm, 5mm, 6mm, 7mm or 8mm, all of which can achieve the technical solution of this application. The radial width of the inner ring 12 of the elastic body is determined based on the fact that the resistance strain gauges 20 can be tangentially attached to the upper and lower surfaces of the inner ring 12 of the elastic body, with an appropriate margin.

[0099] More preferably, the areas of the first through region A and the second through region B account for 55% to 95% of the total area, for example, preferably 55%, 65%, 75%, 85%, or 95% of the total area, all of which can achieve the technical solution of this application. The total area includes the area of ​​the first through region A and the second through region B, as well as the area of ​​the first spoke 14 and the second spoke 15, but does not include the area of ​​the inner ring 12 of the elastic body. The "area" referred to here is the projected area along the axial direction of the elastic body.

[0100] In this application, the thickness of the inner ring 12 of the elastic body and the widths of the first spoke 14 and the second spoke 15 are determined by finite element simulation calculation based on the sensitivity requirements of the sensor under full-scale loading.

[0101] In addition, the upper sealing cover plate 50 is fixed to the upper part of the elastomer 10 to seal the space between the bearing end 11 and the outer ring 13 of the elastomer. The lower sealing cover plate 60 is fixed to the bottom of the elastomer 10 to seal the hollow space of the outer ring 13 of the elastomer. The outer ring 13 of the elastomer is fixedly connected through non-through bolt holes 131.

[0102] This invention targets small-capacity torsion ring sensors, especially digital small-capacity torsion ring sensors, and can meet the sensor sensitivity requirements while placing the circuit board inside the sensor structure to avoid exposing the circuit board to the outside.

[0103] In summary, the torsion ring sensor of the present invention has the following advantages:

[0104] 1. By reasonably removing the inner and outer web material of the strain ring (processing it into a through hole), the sensitivity requirements of the small-capacity sensor can be met;

[0105] 2. The bearing end is designed with a non-through hole to fix the circuit board to the lower surface of the bearing end;

[0106] Third, it can expand the torsion ring sensor to a smaller capacity and place the circuit board inside the elastomer, thereby breaking through the small capacity limitation and avoiding placing the circuit board on the outside of the elastomer.

[0107] For those skilled in the art, the above disclosure is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0108] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0109] Similarly, it should be noted that, in order to simplify the description of the embodiments disclosed in this application and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of the embodiments of this application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of this application requires more features than those mentioned in the claims. In fact, the embodiments have fewer features than all the features of the single embodiments disclosed above.

[0110] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A torsion ring sensor, characterized by The torsion ring sensor comprises a torsion ring elastic body and a plurality of resistance strain gauges, the torsion ring elastic body comprises a loading end, an elastic body inner ring and an elastic body outer ring which are sequentially sleeved from inside to outside; The loading end and the elastic body inner ring are connected by a plurality of first spokes, so that a plurality of first through areas are separated between the loading end and the elastic body inner ring; The elastic body inner ring and the elastic body outer ring are connected by a plurality of second spokes, so that a plurality of second through areas are separated between the elastic body inner ring and the elastic body outer ring; The resistance strain gauges are respectively fixed on the upper and lower surfaces of the elastic body inner ring.

2. The torsion ring sensor of claim 1, wherein, The corresponding first spokes and second spokes are located on the same straight line.

3. The torsion ring sensor of claim 2, wherein, The first end of the first spoke is connected with the elastic body inner ring, the second end is connected with the loading end, and the thickness of the second end connection of the first spoke is less than the thickness of the first end connection of the first spoke; and / or, The first end of the second spoke is connected with the elastic body inner ring, the second end is connected with the elastic body outer ring, and the thickness of the second end connection of the second spoke is less than the thickness of the first end connection of the second spoke.

4. The torsion ring sensor of claim 2, wherein, When the loading end is loaded, the elastic body inner ring is twisted, and an included angle between a vertical section passing through the ring core of the elastic body inner ring and the horizontal direction forms a torsion angle; On the elastic body inner ring, the torsion angles of the first spokes and the second spokes are the maximum torsion angle, and the resistance strain gauges are arranged at positions where the torsion angle is the minimum.

5. The torsion ring sensor of claim 1, wherein, The torsion ring sensor further comprises a circuit board, the lower end surface of the loading end and the elastic body outer ring form an accommodation space, and the circuit board is arranged in the accommodation space.

6. The torsion ring sensor of claim 1, wherein, The wire grid center of the resistance strain gauge is located at the intersection position of the angle bisector of the included angle between two adjacent first spokes or two second spokes and the elastic body inner ring.

7. The torsion ring sensor of claim 1, wherein, The resistance strain gauges on the upper and lower surfaces of the elastic body inner ring are aligned vertically.

8. The torsion ring sensor of claim 1, wherein, The upper part of the loading end is provided with a non-through threaded hole, or a bearing socket, or a bearing head.

9. The torsion ring sensor of claim 1, wherein, The radial width of the elastic body inner ring is 4mm to 8mm.

10. The torsion ring sensor of claim 1, wherein, The areas of the first through areas and the second through areas account for 55% to 95% of the total area, and the total area includes the areas of the first through areas and the second through areas, and the areas of the first spokes and the second spokes.

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