Optical fiber modular load cell

Abstract

The application provides a fiber modular force measuring support, which comprises an upper seat plate, a spherical lining plate, an intermediate pressure bearing plate, a lower seat plate, a support column and a fiber sensor; the bottom of the intermediate pressure bearing plate is provided with spaced-apart holes, the top end of the support column and the top end of the fiber sensor are respectively independently embedded in the corresponding holes; the lower seat plate has a basin cavity and a basin ring side edge arranged outside the basin cavity, and the basin ring side edge is provided with a through hole; the intermediate pressure bearing plate, the support column and the fiber sensor are arranged in the basin cavity; the lead wire of the fiber sensor passes through the through hole and is wired outward; the top of the intermediate pressure bearing plate supports the spherical lining plate, and the top of the spherical lining plate slidingly supports the upper seat plate. The application realizes accurate force measurement through the built-in fiber sensor; the support column and the sensor have the same rigidity under pressure to prevent overload damage; the wear-resistant plate stores grease in the pit for dynamic lubrication, resistance reduction and service life prolonging; the anchoring sleeve directly transmits shear force, prevents breakage and falling off, and improves the overall safety and stability.

Description

Technical Field

[0001] This invention relates to the field of bridge bearings, and more particularly to a fiber optic modular force measuring bearing. Background Technology

[0002] Fiber optic modular force-measuring bearings are key integrated load-bearing and force-measuring components in bridge structural health monitoring, large building foundations, and major equipment support systems. Their core function is to sense and transmit load changes in real time while bearing vertical loads, providing data support for structural safety assessments and maintenance decisions. Due to the complex stresses and variable load conditions in engineering structures, force-measuring bearings must possess high sensitivity, long-term stability, resistance to eccentric loading, and good environmental adaptability to ensure the continuous provision of accurate and reliable load information throughout their service life.

[0003] Traditional force-measuring bearings mostly employ resistance strain gauge sensors or hydraulic force-measuring units, with a relatively concentrated arrangement of measuring points. This makes it difficult to comprehensively reflect the force distribution across the entire bearing surface, and localized eccentric loading can easily lead to measurement errors. Sensor elements are typically installed directly inside the load-bearing components, requiring disassembly of the main structure for replacement and maintenance, which is cumbersome and disrupts normal operation. While some bearings using fiber optic sensing offer advantages in resisting electromagnetic interference, their sensing elements and load-bearing components are arranged independently, failing to form a coordinated force-bearing and synchronous deformation mechanism. This makes the force measurement results significantly affected by installation gaps and friction. Furthermore, when the bridge experiences concentrated heavy loads, the inability of the sensor and support to achieve equal stiffness under coordinated compression makes them highly susceptible to damage from localized heavy loads.

[0004] The lubrication method for the sliding surfaces of bearings is mostly initial application. Over long-term use, the lubricant is lost, especially in core sliding friction pairs such as planar and spherical surfaces, which lack a dynamic and long-lasting self-lubricating structure. This leads to an increased coefficient of friction, affecting the bearing's responsiveness and accelerating wear. Finally, the external anchoring structure of traditional bearings often uses direct bolt connections, with gaps between the holes and bolts. In high-risk conditions such as sudden vehicle braking or earthquakes that generate enormous horizontal shear forces, the lack of a rigid locking mechanism makes it extremely easy for bolts to be cut or the entire bearing to slip out, resulting in safety accidents. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a fiber optic modular force measuring support, which addresses the above-mentioned deficiencies in the prior art.

[0006] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide a fiber optic modular force measuring support to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an upper seat plate, a spherical liner plate, an intermediate bearing plate, a lower seat plate, a support column, and an optical fiber sensor;

[0008] The bottom of the intermediate pressure plate is provided with spaced holes, and the top of the support column and the top of the fiber optic sensor are respectively independently embedded in the corresponding holes.

[0009] The lower seat plate has a pelvic cavity and a pelvic ring side surrounding the outside of the pelvic cavity, and a through hole is provided on the pelvic ring side; the intermediate bearing plate, support column and fiber optic sensor are placed inside the pelvic cavity;

[0010] The fiber optic sensor's leads pass through the through-hole to be routed outwards;

[0011] The top of the intermediate bearing plate supports the spherical liner, and the top of the spherical liner slidably supports the upper seat plate.

[0012] Preferably, it further includes a flat wear-resistant plate and a spherical wear-resistant plate; the top surface of the intermediate bearing plate is recessed to form a concave spherical surface, and the spherical wear-resistant plate is laid in the concave spherical surface; the bottom of the spherical liner plate is protruding to form a convex spherical surface, and the convex spherical surface is rotatably supported on the spherical wear-resistant plate; the top surface of the spherical liner plate is recessed to form an installation groove, and the flat wear-resistant plate is embedded in the installation groove; the bottom surface of the upper seat plate is slidably supported on the top surface of the flat wear-resistant plate.

[0013] Preferably, the bottom of the upper seat plate is provided with a flat stainless steel plate, the flat stainless steel plate protruding downward from the bottom surface of the upper seat plate, and the bottom surface of the flat stainless steel plate slidingly adhering to the top surface of the flat wear-resistant plate; the surface of the convex spherical surface is covered with a spherical stainless steel plate, and the bottom surface of the spherical stainless steel plate slidingly adhering to the top surface of the spherical wear-resistant plate.

[0014] Preferably, the surface of the planar wear-resistant plate is recessed to form a first grease reservoir, and the surface of the spherical wear-resistant plate is recessed to form a second grease reservoir; each of the first and second grease reservoirs is filled with silicone grease.

[0015] Preferably, the system further includes an anchoring assembly, wherein the upper plate has first connecting holes at its four corners and the lower plate has second connecting holes at its corresponding four corners, and the first connecting holes and the second connecting holes are respectively used to connect to the anchoring assembly.

[0016] Preferably, the anchoring assembly includes an anchor rod and a sleeve; each anchor rod is respectively inserted into each of the first connecting holes and each of the second connecting holes; each sleeve is respectively fitted onto the outside of the corresponding anchor rod.

[0017] Preferably, the top end of the support column and the top end of the fiber optic sensor are both supported upward on the inner top surface of the corresponding hole, and the bottom end of the support column and the bottom end of the fiber optic sensor are both supported downward and abut against the bottom surface of the pelvic cavity.

[0018] Preferably, the axial height and axial compressive stiffness of the support column are consistent with the axial height and axial compressive stiffness of the fiber optic sensor.

[0019] Preferably, the number of holes is at least four, and each fiber optic sensor is independently distributed in a hole at a different location.

[0020] Preferably, the plurality of optical fiber sensors are arranged in a symmetrical array around the vertical central axis of the intermediate pressure plate.

[0021] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0022] 1. By using modular built-in fiber optic sensors, real-time and accurate monitoring of bridge loads is achieved without affecting the mechanical function of the bearings.

[0023] 2. The support column and the sensor have the same height and compressive stiffness, and both are subjected to compressive deformation synchronously, which effectively prevents the sensor from being crushed due to excessive local stress.

[0024] 3. The wear-resistant plate has grease reservoirs on its surface, which can dynamically squeeze out silicone grease for coating during sliding, greatly reducing frictional resistance and extending the life of the support.

[0025] 4. The structure of anchor bolt and sleeve locking is adopted to directly transmit huge shear force to the base, effectively preventing bolt cutting and slippage under extreme working conditions. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a fiber optic modular force measuring support according to the present invention;

[0027] Figure 2 This is a schematic diagram of the lower and upper plates of a fiber optic modular force measuring support according to the present invention.

[0028] Figure 3 This is a schematic diagram of the intermediate bearing plate and the lower bearing plate of a fiber optic modular force measuring support according to the present invention.

[0029] Figure 4 This is a schematic diagram of the lower plate of a fiber optic modular force measuring support according to the present invention;

[0030] Figure 5 This is a schematic diagram of the concave spherical surface and the spherical wear-resistant plate of a fiber optic modular force measuring support according to the present invention.

[0031] Figure 6 This is a schematic diagram of the intermediate bearing plate of a fiber optic modular force measuring support according to the present invention;

[0032] Figure 7 This is a schematic diagram of the hole in a modular optical fiber force measuring support according to the present invention;

[0033] Figure 8 This is a schematic diagram of the spherical liner and spherical stainless steel plate of a fiber optic modular force measuring support according to the present invention.

[0034] Figure 9 This is a schematic diagram of the mounting groove for a modular optical fiber force measuring support according to the present invention.

[0035] The reference numerals in the attached drawings are as follows: 1. Upper base plate; 101. Flat stainless steel plate; 102. First connecting hole; 2. Spherical liner plate; 201. Convex spherical surface; 202. Mounting groove; 203. Spherical stainless steel plate; 3. Intermediate bearing plate; 301. Hole; 302. Concave spherical surface; 4. Lower base plate; 401. Basin; 402. Basin ring side; 403. Through hole; 404. Second connecting hole; 5. Support column; 6. Fiber optic sensor; 601. Lead wire; 7. Flat wear-resistant plate; 701. First grease reservoir; 8. Spherical wear-resistant plate; 801. Second grease reservoir; 9. Anchoring assembly; 901. Anchor rod; 902. Sleeve. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1:

[0039] As attached Figures 1 to 9 The fiber optic modular force measuring support shown has an upper plate 1 with a plate-like structure. A flat stainless steel plate 101 is set in the central area of ​​the bottom of the upper plate 1. The first connecting holes 102 vertically penetrate the four corners of the upper plate 1. When the bridge beam is subjected to thermal expansion and contraction or lateral translation due to braking force, the bridge beam causes the upper plate 1 to slide in the horizontal direction. When the upper plate 1 moves, it simultaneously causes the flat stainless steel plate 101 at the bottom and the first connecting holes 102 at the four corners to move horizontally together. The bottom surface of the flat stainless steel plate 101 then slides relative to the flat wear-resistant plate 7 below. At the same time, when the first connecting holes 102 follow the movement of the upper plate 1, they exert a lateral pushing displacement on the anchor rods 901 inserted inside.

[0040] The spherical liner 2 is located between the flat stainless steel plate 101 and the intermediate bearing plate 3. The mounting groove 202 is recessed vertically downward on the top surface of the spherical liner 2. The convex spherical surface 201 is integrally formed in the bottom center area of ​​the spherical liner 2 and protrudes downward. The spherical stainless steel plate 203 is attached to and covers the outer arc-shaped surface of the convex spherical surface 201. When the end of the bridge is subjected to load and undergoes downward deflection, the overturning force is transmitted downward to the top surface of the spherical liner 2, forcing the spherical liner 2 to tilt and rotate as a whole. When the spherical liner 2 tilts, it drives the bottom convex spherical surface 201 to rotate spherically with the center of the sphere as the origin. The convex spherical surface 201 drives the outer spherical stainless steel plate 203 to slide along the spherical surface. During this process, the mounting groove 202 at the top of the spherical liner 2 changes the horizontal tilt angle simultaneously to ensure that the spherical liner 2 maintains the support linkage for the top flat wear-resistant plate 7 and the flat stainless steel plate 101 while bearing the rotation angle.

[0041] The intermediate pressure plate 3 has a disc-shaped structure. The concave spherical surface 302 is recessed downward in the center of the top of the intermediate pressure plate 3. The holes 301 are vertically arranged in an array in the bottom end face of the intermediate pressure plate 3. When the spherical liner 2 transmits the load to the intermediate pressure plate 3, the intermediate pressure plate 3 as a whole undergoes a downward settlement displacement. The concave spherical surface 302 at the top of the intermediate pressure plate 3 bears the sliding and downward compression of the spherical wear-resistant plate 8 and the spherical stainless steel plate 203. When the intermediate pressure plate 3 settles downward, it drives the top wall of the bottom hole 301 to move downward synchronously. The downward displacement of the top wall of the hole 301 then generates a downward vertical pressing and pushing action on the support column 5 and the fiber optic sensor 6 assembled inside, realizing the linkage response of transmitting the load from above downward.

[0042] The lower seat plate 4 is located at the bottom of the support. The basin ring side 402 extends vertically upward and is located on the top surface of the lower seat plate 4. The basin cavity 401 is an inner cavity space enclosed by the basin ring side 402. The through hole 403 horizontally penetrates the inner and outer side walls of the basin ring side 402. The second connecting hole 404 vertically penetrates the four corners of the lower seat plate 4. When the base is subjected to lateral vibration, the external structure causes the lower seat plate 4 to move horizontally as a whole. When the lower seat plate 4 moves, it causes the second connecting hole 404 around it to move synchronously to withstand the external tensile force. At the same time, the lower seat plate 4 causes the basin ring side 402 and the bottom surface of the basin cavity 401 to move together. The inner side wall of the basin ring side 402 directly generates lateral obstruction and pushing action on the intermediate bearing plate 3 contained inside the basin cavity 401.

[0043] The support column 5 has a cylindrical structure. When the intermediate bearing plate 3 is compressed and displaced downward, the downward pressure displacement directly forces the top of the support column 5 to bear vertical pressure. The main body of the support column 5 undergoes contraction deformation along the central axis. The top of the support column 5 is compressed and displaced downward. The bottom of the support column 5 rests against the bottom surface of the lower pelvis 401 and remains relatively stationary. When the load above decreases and the downward pressure is relieved, the support column 5 elastically elongates upward by relying on the axial restoring force. The top of the support column 5 moves upward in the opposite direction and maintains a tight upward support and following pushing action on the bottom surface of the intermediate bearing plate 3.

[0044] The fiber optic sensor 6 has a columnar structure. The lead wire 601 passes through the side of the fiber optic sensor 6 and extends outward. When the top of the fiber optic sensor 6 is subjected to downward mechanical pressure, the main body of the fiber optic sensor 6 is compressed and undergoes axial compression deformation. The internal structure of the fiber optic sensor 6 undergoes physical deformation synchronously with the compression of the main body to change the wavelength of the optical signal. At this time, the bottom of the fiber optic sensor 6 is supported by the bottom surface of the basin 401 and remains relatively stationary. The lead wire 601 follows the compressed contraction state of the main body of the fiber optic sensor 6 and maintains its original wiring trajectory. When the main body of the fiber optic sensor 6 extends upward and recovers as the external pressure decreases, the lead wire 601 continuously outputs the real-time signal to the outside.

[0045] The flat wear-resistant plate 7 has a disc-shaped structure. The first grease reservoir 701 is recessed downwards and distributed in the upper surface of the flat wear-resistant plate 7. When the flat stainless steel plate 101 slides horizontally, the bottom surface of the flat stainless steel plate 101 rubs against the top surface of the flat wear-resistant plate 7. The flat wear-resistant plate 7 itself is clamped by the mounting groove 202 below and kept relatively still. The horizontal sliding motion of the bottom surface of the flat stainless steel plate 101 scrapes and squeezes the opening of the first grease reservoir 701. The silicone grease pre-stored inside the first grease reservoir 701 overflows outward under continuous squeezing and is spread and coated on the surface of the flat wear-resistant plate 7 along the sliding trajectory.

[0046] The spherical wear-resistant plate 8 has an upwardly concave bowl-shaped structure. The second grease reservoir 801 is concave on the inner concave surface of the spherical wear-resistant plate 8. When the spherical stainless steel plate 203 rotates, it presses heavily on the arc surface of the spherical wear-resistant plate 8 to deflect and slide. The spherical wear-resistant plate 8 is supported by the concave spherical surface 302 and remains relatively stationary. The rotation and rolling pressure of the spherical stainless steel plate 203 cause the silicone grease inside the second grease reservoir 801 to be squeezed outward and evenly coated on the inner arc surface of the spherical wear-resistant plate 8 in the direction of rotation of the spherical stainless steel plate 203.

[0047] Anchoring component 9 is used to connect with external structure. Anchor rod 901 is vertically inserted into the first connecting hole 102 and the second connecting hole 404. Sleeve 902 is a hollow tubular structure and is sleeved on the outer surface of the anchor rod 901. The outer surface of sleeve 902 is embedded in the external foundation structure. When the support as a whole is subjected to external shear force and has a tendency to slide horizontally, the first connecting hole 102 and the second connecting hole 404 move synchronously and push the anchor rod 901 inserted inside. After being compressed, the anchor rod 901 transmits the horizontal thrust outward to the inner wall of the outer sleeve 902. At this time, sleeve 902 is restricted by the external foundation structure and remains stationary. Sleeve 902 outputs a reverse limiting support force to anchor rod 901. Through the rigid blocking mechanism, the lateral displacement of anchor rod 901 is restrained, and the support is kept in the initial position.

[0048] Example 2:

[0049] Based on Embodiment 1, the solution in Embodiment 1 will be further described in detail below, with reference to the specific working method described in detail:

[0050] Furthermore, the top surface of the intermediate bearing plate 3 is recessed and processed into a concave spherical surface 302. The bottom shape of the spherical wear-resistant plate 8 matches and fits tightly with the surface of the concave spherical surface 302. The convex shape of the convex spherical surface 201 at the bottom of the spherical liner 2 matches the concave surface of the spherical wear-resistant plate 8. When the upper seat plate 1 is subjected to external forces from the bridge and tilts, the upper seat plate 1 drives the spherical liner 2 to tilt and rotate synchronously, causing the convex spherical surface 201 at the bottom of the spherical liner 2 to slide spherically along the top surface of the spherical wear-resistant plate 8. The intermediate bearing plate 3 remains relatively stationary to provide bottom support. Plate 8 reduces the frictional resistance between the convex spherical surface 201 and the concave spherical surface 302; the outer edge contour of the flat wear-resistant plate 7 matches the inner sidewall of the mounting groove 202, and the flat wear-resistant plate 7 is embedded in the mounting groove 202 so that the flat wear-resistant plate 7 cannot move horizontally relative to the spherical liner plate 2. When the upper seat plate 1 is subjected to external force and produces horizontal displacement, the bottom surface of the upper seat plate 1 slides horizontally along the top surface of the flat wear-resistant plate 7. At this time, the spherical liner plate 2 remains relatively stationary, and the flat wear-resistant plate 7 reduces the frictional resistance when the upper seat plate 1 and the spherical liner plate 2 slide horizontally.

[0051] Furthermore, the flat stainless steel plate 101 is located at the bottom of the upper seat plate 1. The bottom surface of the flat stainless steel plate 101 is lower than the horizontal height of the rest of the bottom surface area of ​​the upper seat plate 1, thus forming a downwardly convex structure. When the upper seat plate 1 is subjected to external force and moves horizontally, the upper seat plate 1 drives the flat stainless steel plate 101 to move horizontally synchronously. During this translation process, the bottom surface of the flat stainless steel plate 101 is always pressed against the top surface of the flat wear-resistant plate 7 and slides relative to it. The downwardly convex positional relationship ensures that the upper... When the seat plate 1 undergoes a large displacement translation, the bottom surface of the upper seat plate 1 will not rub against the outer mechanism. The inner surface shape of the spherical stainless steel plate 203 matches the outer curved surface shape of the convex spherical surface 201 and is tightly wrapped. When the force causes a rotational tilting action, the convex spherical surface 201 drives the spherical stainless steel plate 203 to perform a spherical deflection motion simultaneously, so that the bottom surface of the spherical stainless steel plate 203 is attached to the top surface of the spherical wear-resistant plate 8 to perform spherical rotation and sliding. The spherical stainless steel plate 203 then protects the convex spherical surface 201 from direct friction and wear.

[0052] Furthermore, the top side surface of the flat wear-resistant plate 7 is recessed inward to form a first grease reservoir 701, with the opening of the first grease reservoir 701 facing the outer side of the top surface of the flat wear-resistant plate 7. The top side surface of the spherical wear-resistant plate 8 is recessed inward to form a second grease reservoir 801, with the opening of the second grease reservoir 801 facing the outer side of the top surface of the spherical wear-resistant plate 8. Silicone grease fills and covers the internal spaces of the first grease reservoir 701 and the second grease reservoir 801, respectively. When the contact component slides along the surface of the flat wear-resistant plate 7, the position of the flat wear-resistant plate 7 remains fixed. The squeezing action forces the silicone grease inside the first grease reservoir 701 to overflow outward and spread on the surface of the flat wear-resistant plate 7. When the contact component slides along the surface of the spherical wear-resistant plate 8, the position of the spherical wear-resistant plate 8 remains fixed. The squeezing action forces the silicone grease inside the second grease reservoir 801 to overflow outward and spread on the surface of the spherical wear-resistant plate 8.

[0053] Furthermore, the upper base plate 1 has four vertically penetrating first connecting holes 102 at its four corners, and the lower base plate 4 has four vertically penetrating second connecting holes 404 at its corresponding four corners. The first connecting holes 102 and the second connecting holes 404 provide installation space for the anchoring components 9 in the vertical direction. The anchoring components 9 are independently embedded in the first connecting holes 102 and the second connecting holes 404. When the upper base plate 1 is subjected to external force and tends to move, the upper base plate 1 drives the first connecting holes 102 to move synchronously and press the anchoring components 9 installed inside. When the lower base plate 4 is subjected to external force and tends to move, the lower base plate 4 drives the second connecting holes 404 to move synchronously and press the anchoring components 9 installed inside. At this time, the anchoring components 9 themselves remain relatively stationary and exert a reaction limiting force on the first connecting holes 102 and the second connecting holes 404, thereby preventing the upper base plate 1 and the lower base plate 4 from moving and realizing the anchoring and locking of the entire support.

[0054] Furthermore, one end of the anchor rod 901 passes vertically through the interior of the first connecting hole 102 and the interior of the second connecting hole 404, respectively. The sleeve 902 is a hollow tubular structure and is fitted onto the outer side surface of the anchor rod 901. The outer surface of the sleeve 902 is connected to the interior of the external foundation structure. When the bridge is subjected to force and has a tendency to move horizontally, causing the upper seat plate 1 and the lower seat plate 4 to move relatively, the upper seat plate 1 and the lower seat plate 4 respectively cause the first connecting hole 102 and the second connecting hole 404 to move horizontally in sync. The inner walls of the first connecting hole 102 and the second connecting hole 404 move accordingly and tightly press against the outer wall of the anchor rod 901. After the anchor rod 901 is subjected to force, it transmits the horizontal compressive force to the inner wall of the outer sleeve 902. Since the sleeve 902 is limited by the external foundation structure and kept relatively stationary, the sleeve 902 generates a reverse limiting force on the anchor rod 901, thereby hindering the continued movement of the first connecting hole 102 and the second connecting hole 404, thus realizing the anchoring and locking function.

[0055] Furthermore, the top end face of the support column 5 and the top end face of the fiber optic sensor 6 are pressed upwards and tightly attached to the topmost surface inside the hole 301. The bottom end face of the support column 5 and the bottom end face of the fiber optic sensor 6 are supported downwards and pressed against the bottommost surface inside the pelvis 401. When the load above generates downward vertical pressure, the pressure forces the inner top surface of the hole 301 to move downwards and simultaneously press down on the top end of the support column 5 and the top end of the fiber optic sensor 6. After being pressed, the support column 5 and the fiber optic sensor 6 transmit the vertical pressure downwards, so that the bottom end of the support column 5 and the bottom end of the fiber optic sensor 6 simultaneously press down on the bottom surface of the pelvis 401. At this time, the bottom surface of the pelvis 401 remains stationary and provides upward reverse support force, so that the support column 5 and the fiber optic sensor 6 maintain a stable vertical clamping force state between the hole 301 and the pelvis 401.

[0056] Furthermore, the outer edge contour of the flat wear-resistant plate 7 matches the shape of the inner wall of the mounting groove 202. The flat wear-resistant plate 7 is nested downward inside the mounting groove 202. When the upper component slides horizontally on the top surface of the flat wear-resistant plate 7 and applies a horizontal frictional thrust to the flat wear-resistant plate 7, the flat wear-resistant plate 7 will be subjected to force and tend to move horizontally. The outer edge of the flat wear-resistant plate 7 will simultaneously translate and abut against and push the inner wall of the mounting groove 202. The solid inner wall of the mounting groove 202 will then output a rigid reverse blocking force on the flat wear-resistant plate 7, thereby forcibly restricting the horizontal displacement of the flat wear-resistant plate 7 and ensuring that the flat wear-resistant plate 7 remains relatively stationary and does not undergo lateral misalignment when subjected to the sliding friction above.

[0057] Furthermore, multiple fiber optic sensors 6 are independently installed in the internal space of holes 301 at different locations. Each hole 301 contains only one independent fiber optic sensor 6. When the external pressure distribution of the support changes, the fiber optic sensors 6 at different locations independently sense the local pressure in their respective areas within their corresponding holes 301. Adjacent fiber optic sensors 6 are physically separated by the solid sidewalls of their respective holes 301. Each fiber optic sensor 6 independently undergoes minor compressive deformation within its own hole 301 without producing lateral contact or displacement interference in the mechanical structure.

[0058] Furthermore, multiple fiber optic sensors 6 are arranged in a uniform and symmetrical ring at the bottom of the intermediate pressure plate 3, with the virtual central axis extending vertically downward from the geometric center of the intermediate pressure plate 3 as the center reference. When the intermediate pressure plate 3 moves downward under the uniform vertical pressure transmitted from above, the bottom surface of the intermediate pressure plate 3 synchronously and uniformly applies downward pressure to all the fiber optic sensors 6 arranged in a symmetrical array. Each fiber optic sensor 6 synchronously produces the same small compressive deformation. When the intermediate pressure plate 3 tilts due to the eccentric load, different side areas of the bottom surface of the intermediate pressure plate 3 produce different degrees of downward displacement. The fiber optic sensors 6 located at different positions in the symmetrical array passively produce compression deformation of varying depths as the bottom surface of the intermediate pressure plate 3 tilts and presses down. The entire array provides anti-overturning support through local deformation differences.

[0059] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0060] Secondly, the accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0061] Finally, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fiber optic modular force measuring support, characterized in that, include: Upper seat plate, spherical liner plate, intermediate bearing plate, lower seat plate, support column and fiber optic sensor; The bottom of the intermediate pressure plate is provided with spaced holes. The top of the support column and the top of the fiber optic sensor are respectively independently embedded in the corresponding holes, and the axial height and axial compressive stiffness of the support column are consistent with the axial height and axial compressive stiffness of the fiber optic sensor. The lower seat plate has a pelvic cavity and a pelvic ring side surrounding the outside of the pelvic cavity, and a through hole is provided on the pelvic ring side; the intermediate bearing plate, support column and fiber optic sensor are placed inside the pelvic cavity; The fiber optic sensor's leads pass through the through-hole to be routed outwards; The top of the intermediate bearing plate supports the spherical liner, and the top of the spherical liner slidably supports the upper seat plate.

2. The fiber optic modular force measuring support according to claim 1, characterized in that: It also includes a flat wear-resistant plate and a spherical wear-resistant plate; the top surface of the intermediate bearing plate is recessed to form a concave spherical surface, and the spherical wear-resistant plate is laid in the concave spherical surface; the bottom of the spherical liner plate is protruding to form a convex spherical surface, and the convex spherical surface is rotatably supported on the spherical wear-resistant plate; the top surface of the spherical liner plate is recessed to form an installation groove, and the flat wear-resistant plate is embedded in the installation groove; the bottom surface of the upper seat plate is slidably supported on the top surface of the flat wear-resistant plate.

3. The fiber optic modular force measuring support according to claim 2, characterized in that: The bottom of the upper seat plate is provided with a flat stainless steel plate, which protrudes downward from the bottom surface of the upper seat plate, and the bottom surface of the flat stainless steel plate slides in contact with the top surface of the flat wear-resistant plate; the surface of the convex spherical surface is covered with a spherical stainless steel plate, and the bottom surface of the spherical stainless steel plate slides in contact with the top surface of the spherical wear-resistant plate.

4. The fiber optic modular force measuring support according to claim 2, characterized in that: The surface of the flat wear-resistant plate is recessed to form a first grease reservoir, and the surface of the spherical wear-resistant plate is recessed to form a second grease reservoir; each of the first and second grease reservoirs is filled with silicone grease.

5. The fiber optic modular force measuring support according to claim 1, characterized in that: It also includes an anchoring assembly. The upper plate has first connecting holes at its four corners, and the lower plate has second connecting holes at its corresponding four corners. The first connecting holes and the second connecting holes are used to connect to the anchoring assembly, respectively.

6. A fiber optic modular force measuring support according to claim 5, characterized in that: The anchoring assembly includes an anchor rod and a sleeve; each anchor rod is respectively inserted into each of the first connecting holes and each of the second connecting holes; each sleeve is respectively fitted onto the outside of the corresponding anchor rod.

7. The fiber optic modular force measuring support according to claim 1, characterized in that: The top of the support column and the top of the fiber optic sensor are both supported upwards on the inner top surface of the corresponding hole, and the bottom of the support column and the bottom of the fiber optic sensor are both supported downwards and abut against the bottom surface of the pelvic cavity.

8. A fiber optic modular force measuring support according to claim 2, characterized in that: The outer edge contour of the flat wear-resistant plate matches the inner sidewall of the mounting groove, and the flat wear-resistant plate is embedded inside the mounting groove to limit the horizontal displacement of the flat wear-resistant plate.

9. A fiber optic modular force measuring support according to claim 1, characterized in that: The number of holes is at least four, and each of the fiber optic sensors is independently distributed in the holes at different locations.

10. A fiber optic modular force measuring support according to claim 9, characterized in that: The multiple fiber optic sensors are arranged in a symmetrical array around the vertical central axis of the intermediate pressure plate.

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