Spherical hinge device for monitoring unbalanced force in real time in swivel construction

Abstract

The spherical hinge device comprises an upper bearing platform, a lower bearing platform, an upper spherical hinge, a lower spherical hinge, a supporting foot prefabricated part and a base, the upper spherical hinge is rotationally connected with the lower spherical hinge, the base is located on the lower bearing platform, a basin cavity is formed in the base, the basin cavity is filled with fluid substances, and the fluid substances are arranged in the basin cavity. The basin cavity is suitable for embedding of the lower spherical hinge, the lower spherical hinge is in sealing connection with the basin cavity, a force measuring interface is formed in the side wall of the basin cavity, the force measuring interface is in sealing connection with a pressure sensing element, under the action of vertical force, the lower spherical hinge extrudes a fluid substance, and the pressure sensing element detects extrusion force borne by the fluid substance to obtain the vertical force; an annular sliding way located on the outer side of the lower spherical hinge is arranged on the lower bearing platform, the supporting foot prefabricated parts are annularly distributed on the annular sliding way, and a sand box used for adjusting the state of the beam body is arranged between every two adjacent supporting foot prefabricated parts. According to the utility model, the actual stress condition in the bridge rotation process can be effectively monitored, and whether the unbalance loading condition exists in the bridge can be found in time.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge rotation, in particular to a ball joint device used for real-time monitoring of unbalanced forces during rotation construction. Background Art

[0002] With the rapid development of the national economy, infrastructure, especially transportation, has been vigorously developed. Due to the influence of some terrains or existing transportation facilities, the rotation bridge construction method is increasingly widely used in bridge construction. Compared with traditional construction technology, the rotation construction technology has the characteristics of not interfering with traffic, uninterrupted navigation, and can cross deep ditches, rivers, and roads with frequent traffic. It is also fast, economical and efficient.

[0003] Existing rotating devices basically only have the function of rotating support, and some also have the function of height adjustment, and their applicability is poor. During the rotation process of the bridge, the stress condition of the superstructure cannot be known through the existing rotating devices, especially it is impossible to find out whether there is an overload, and the safety of the bridge during rotation cannot be guaranteed. Utility Model Content

[0004] The utility model aims to provide a ball joint device for real-time monitoring of unbalanced forces during rotation construction, which can effectively monitor the actual stress conditions during the rotation of the bridge, promptly discover whether the bridge has an overload condition, and ensure correct analysis and judgment of the safety of the bridge.

[0005] In order to solve the above technical problems, the utility model adopts the following solutions:

[0006] A ball joint device for real-time monitoring of unbalanced forces during rotation construction comprises an upper support platform, a lower support platform, an upper ball joint, a lower ball joint, a support leg prefabricated part, and a base, wherein the upper ball joint is rotatably connected to the lower ball joint, the base is located on the lower support platform, a pelvic cavity is provided on the base, the pelvic cavity is filled with fluid material, the pelvic cavity is suitable for the lower ball joint to be embedded, and the lower ball joint is sealed and connected to the pelvic cavity, a force measuring interface is provided on the side wall of the pelvic cavity, and a pressure sensing element is sealed and connected to the force measuring interface, under the action of vertical force, the lower ball joint squeezes the fluid material, and the pressure sensing element detects the squeezing force exerted on the fluid material to obtain the vertical force; an annular slideway is provided on the lower support platform and the support leg prefabricated parts are distributed in an annular shape on the annular slideway, and a sand box for adjusting the state of the beam body is provided between two adjacent support leg prefabricated parts.

[0007] Due to the adoption of the above technical scheme, the upper pedestal bears the platform of the upper structure of the bridge, and the lower pedestal supports the bottom platform of the entire rotating structure. The upper ball joint is located below the upper pedestal and is rotatably connected to the lower ball joint to realize the rotation function of the bridge. The lower ball joint is located on the lower pedestal, opposite to the upper ball joint and rotatably connected to it. The support leg prefabricated parts are distributed in an annular slideway to provide auxiliary support for the bridge rotation. The base is located on the lower pedestal and is provided with a pelvic cavity inside for embedding the lower ball joint. The base is provided with a pelvic cavity filled with fluid material. The lower ball joint is embedded in the pelvic cavity and is sealed with the pelvic cavity to ensure that the fluid material does not leak. A force measuring interface is provided on the side wall of the pelvic cavity to detect the vertical force exerted on the lower ball joint. The force measuring interface is sealed and connected with a pressure sensing element. When the lower ball joint squeezes the fluid material under the action of the vertical force, the pressure sensing element can detect the extrusion force exerted on the fluid material and calculate the magnitude of the vertical force accordingly. The lower pedestal is provided with an annular slideway located outside the lower ball joint. The support leg prefabricated parts It is distributed in an annular shape on the annular slideway to provide auxiliary balance and support for the bridge rotation. A sand box is provided between two adjacent support leg prefabricated parts to adjust the state of the beam body and ensure the stability and safety of the bridge rotation. The rotation function of the bridge is realized through the rotation connection between the upper ball joint and the lower ball joint. It is suitable for crossing obstacles or situations where the direction of the bridge needs to be adjusted. The sealed connection between the lower ball joint and the base and the setting of fluid materials can accurately measure and monitor the vertical force exerted on the bridge during the rotation process. The actual force condition of the bridge can be obtained during the rotation process of the bridge, and it can be known in time whether the bridge is overloaded, so as to make a correct analysis and judgment on the safety of the bridge and ensure the safety and stability of the rotation construction. The setting of the annular slideway and the support leg prefabricated parts provides auxiliary support and balance for the bridge rotation, and further improves the stability and safety of the rotation construction. Such a rotation device combines modern engineering technology and precision measurement technology, and can realize efficient and safe rotation construction of the bridge.

[0008] Optionally, the prefabricated support leg consists of a steel pipe, a concrete column poured inside the steel pipe and a prefabricated concrete block wrapped around the outside of the steel pipe; a plurality of bolts are welded to the outer wall of the steel pipe, and spiral steel bars are arranged; the prefabricated concrete block is connected to the steel pipe as a whole through the bolts and spiral steel bars; the prefabricated support leg consists of two steel pipes and two connecting flat steel plates connecting the two steel pipes; a slide plate is provided at the bottom of the two steel pipes; a plurality of connecting steel bars are welded inside each steel pipe to strengthen the connection between the prefabricated support leg and the upper ball joint.

[0009] Optionally, the connecting steel bars are arranged symmetrically and welded to the inner wall of the steel pipe on both sides, and the connecting steel bars are straight bars or U-shaped bars.

[0010] Optionally, the slide plate is fan-shaped, and a gap of 10-20 mm is reserved between the bottom of the slide plate and the top surface of the annular slideway.

[0011] Optionally, the bolt is a round head nail, the length of the bolt is 65-150 mm, the nominal diameter is 14-24 mm, and the welding direction is perpendicular to the outer wall of the steel pipe.

[0012] Optionally, the fluid substance is silicone grease, butter or hydraulic oil.

[0013] Optionally, the side wall of the pelvic cavity is provided with an injection channel connected to the pelvic cavity, and the force measuring interface is arranged at the inlet of the injection channel.

[0014] Optionally, a rubber sealing ring is embedded in the edge where the lower end of the lower ball joint contacts the side wall of the pelvic cavity, and the rubber sealing ring is pressed tightly between the side wall of the lower ball joint and the side wall of the pelvic cavity.

[0015] Optionally, the pressure-sensitive element is a diffused silicon pressure sensor, a ceramic pressure sensor or a stress sheet, and the pressure-sensitive element is distributed in a cross shape around the lower ball joint, and the pressure-sensitive element is sealed and connected to the force measuring interface by threaded fitting.

[0016] Optionally, the bottom surface of the upper ball joint and the top surface of the lower ball joint are in spherical contact, the bottom surface of the upper ball joint is a convex spherical surface protruding downward, the top surface of the lower ball joint is a concave spherical surface recessed downward, the top surface of the lower ball joint is embedded with an adaptive spherical slide plate, a locating pin protruding upward is provided at the center of the top surface of the lower ball joint, a pin hole recessed upward and adapted to the locating pin is provided at the center of the bottom surface of the upper ball joint, and the locating pin and the pin hole are rotatably matched.

[0017] The utility model has the beneficial effects:

[0018] 1. In the utility model, when the lower ball joint squeezes the fluid material under the pressure of the beam body, the pressure-sensitive element can detect the squeezing force on the fluid material and calculate the size of the vertical force accordingly. The lower bearing platform is provided with an annular slideway located outside the lower ball joint. The support leg prefabricated parts are distributed in an annular manner on the annular slideway to provide auxiliary balance and support for the bridge rotation. A sand box is provided between two adjacent support leg prefabricated parts to adjust the state of the beam body and ensure the stability and safety of the bridge rotation. The rotation function of the bridge is realized by the rotation connection between the upper ball joint and the lower ball joint. It is suitable for crossing obstacles or when the direction of the bridge needs to be adjusted. The lower ball joint and The sealed connection of the base and the setting of fluid materials can accurately measure and monitor the vertical force exerted on the bridge during the rotation process. The actual force conditions of the bridge can be obtained during the rotation process, and it can be known in time whether the bridge is overloaded, so as to make correct analysis and judgment on the safety of the bridge and ensure the safety and stability of the rotation construction. The setting of the annular slide and the prefabricated support legs can provide auxiliary support and balance for the bridge rotation, and further improve the stability and safety of the rotation construction. Such a rotation device combines modern engineering technology and precision measurement technology, and can realize efficient and safe rotation construction of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0021] Figure 3 It is a schematic diagram of the distribution structure of the sand box, the support leg prefabricated parts and the annular slideway;

[0022] Figure 4 This is the structural diagram of the prefabricated support leg;

[0023] Figure 5 This is a schematic diagram of the top view of the support leg prefabricated component.

[0024] Figure markings: 1-upper ball joint, 2-lower ball joint, 3-rubber sealing ring, 4-force measuring interface, 5-base, 6-embedded steel plate, 7-concave spherical surface, 8-injection channel, 9-pelvic cavity, 10-pin hole, 11-locating pin, 12-spherical slide plate, 13-pressure sensing element, 14-convex spherical surface, 15-support foot prefabricated part, 1501-steel pipe, 1502-slide plate, 1503-spiral steel bar, 1504-connecting steel bar, 1505-bolt, 1506-connecting flat steel plate, 16-sand box, 17-annular slide. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0026] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example 1

[0029] A ball joint device for real-time monitoring of unbalanced forces during rotation construction comprises an upper support platform, a lower support platform, an upper ball joint 1, a lower ball joint 2, a support leg prefabricated part 15, and a base 5. The upper ball joint 1 is rotatably connected to the lower ball joint 2. The base 5 is located on the lower support platform. A pelvic cavity 9 is provided on the base 5. The pelvic cavity 9 is filled with a fluid material. The pelvic cavity 9 is suitable for the lower ball joint 2 to be embedded and the lower ball joint 2 is sealed and connected to the pelvic cavity 9. A force measuring interface 4 is provided on the side wall of the pelvic cavity 9. The force measuring interface 4 is sealed and connected with a pressure sensing element 13. Under the action of vertical force, the lower ball joint 2 squeezes the fluid material, and the pressure sensing element 13 detects the squeezing force exerted on the fluid material to obtain the vertical force. An annular slide 17 is provided on the lower support platform and is located on the outer side of the lower ball joint 2. The support leg prefabricated parts 15 are distributed in an annular shape on the annular slide 17. A sand box 16 for adjusting the state of the beam body is provided between two adjacent support leg prefabricated parts 15.

[0030] In this embodiment, the upper bearing platform carries the platform of the upper structure of the bridge, and the lower bearing platform supports the bottom platform of the entire rotating structure. The upper ball joint 1 is located below the upper bearing platform and is rotatably connected to the lower ball joint 2 to realize the rotation function of the bridge. The lower ball joint 2 is located on the lower bearing platform, opposite to the upper ball joint 1, and is rotatably connected to it. Figure 3 As shown, the support leg prefabricated parts 15 are distributed in an annular manner on the annular slideway 17 to provide auxiliary support for the bridge rotation. The base 5 is located on the lower support platform and has a basin cavity 9 inside for embedding the lower ball joint 2. Figure 1 and Figure 2As shown, a pelvic cavity 9 is provided on the base 5, and the pelvic cavity 9 is filled with fluid material. The lower ball joint 2 is embedded in the pelvic cavity 9 and is sealed and connected to the pelvic cavity 9 to ensure that the fluid material does not leak. A force measuring interface 4 is provided on the side wall of the pelvic cavity 9 to detect the vertical force applied to the lower ball joint 2. The force measuring interface 4 is sealed and connected to a pressure sensing element 13. When the lower ball joint 2 squeezes the fluid material under the action of the vertical force, the pressure sensing element 13 can detect the squeezing force applied to the fluid material and calculate the magnitude of the vertical force accordingly. An annular slide 17 is provided on the lower support platform and is located on the outer side of the lower ball joint 2. The annular slide 17 is a chrome-plated steel plate, and the top surface is planed in the factory after welding on the back. The support leg prefabricated parts 15 are distributed in an annular manner on the annular slide 17 to provide auxiliary balance and support for the bridge rotation. A sand box 16 is provided between two adjacent support leg prefabricated parts 15 to adjust the state of the beam body to ensure the stability and safety of the bridge rotation. The sand box 16 is a commonly used component in the bridge rotation device and belongs to the prior art. The rotation function of the bridge is realized by the rotation connection between the upper ball joint 1 and the lower ball joint 2. It is suitable for crossing obstacles or situations where the direction of the bridge needs to be adjusted. The sealed connection between the lower ball joint 2 and the base 5 and the setting of the fluid material can accurately measure and monitor the vertical force applied to the bridge during the rotation process. The actual force condition of the bridge can be obtained during the rotation process of the bridge, and it can be known in time whether the bridge is overloaded, so as to make a correct analysis and judgment on the safety of the bridge and ensure the safety and stability of the rotation construction. The setting of the annular slide 17 and the support leg prefabricated part 15 provides auxiliary support and balance for the bridge rotation, further improving the stability and safety of the rotation construction. Such a rotation device combines modern engineering technology and precision measurement technology, and can realize efficient and safe rotation construction of the bridge.

[0031] Example 2

[0032] Furthermore, the prefabricated support leg 15 is composed of a steel pipe 1501, a concrete column poured inside the steel pipe 1501 and a prefabricated concrete block wrapped around the outside of the steel pipe 1501. A plurality of studs 1505 are welded to the outer wall of the steel pipe 1501, and spiral steel bars 1503 are arranged. The prefabricated concrete block is connected to the steel pipe 1501 as a whole through the studs 1505 and the spiral steel bars 1503. The prefabricated support leg 15 is composed of two steel pipes 1501 and two connecting flat steel plates 1506 connecting the two steel pipes 1501. A slide plate 1502 is provided at the bottom of the two steel pipes 1501. A plurality of connecting steel bars 1504 are welded inside each steel pipe 1501 to strengthen the connection between the prefabricated support leg 15 and the upper ball joint 1.

[0033] Furthermore, the connecting steel bars 1504 are arranged symmetrically and welded to the inner wall of the steel pipe 1501 on both sides. The connecting steel bars 1504 are straight bars or U-shaped bars.

[0034] Specifically, Figure 4 and Figure 5As shown, the steel pipe 1501 serves as the main structural skeleton of the support leg prefabricated component 15 and provides basic support functions. The concrete column is poured inside the steel pipe 1501 and bears pressure together with the steel pipe 1501, thereby enhancing the bearing capacity of the support leg prefabricated component 15. The precast concrete block is wrapped around the outside of the steel pipe 1501 and connected to the steel pipe 1501 as a whole through the bolts 1505 and the spiral steel bars 1503, thereby further enhancing the stability and integrity of the support leg prefabricated component 15. The bolts 1505 are welded to the outer wall of the steel pipe 1501. , used to connect precast concrete blocks to ensure a firm connection between the concrete blocks and the steel pipe 1501. The spiral steel bar 1503 is arranged between the steel pipe 1501 and the precast concrete block to increase the integrity and shear resistance of the structure. The connecting flat steel plate 1506 is used to connect the two steel pipes 1501 to form an integral support leg prefabricated component 15 structure. The slide plate 1502 is installed at the bottom of the two steel pipes 1501 to facilitate the sliding and position adjustment of the support leg prefabricated component 15 on the annular slide 17. Each steel pipe 1501 is welded inside There are multiple connecting steel bars 1504. The main function of these connecting steel bars 1504 is to strengthen the connection between the support leg prefabricated part 15 and the upper ball joint 1. The connecting steel bars 1504 can be straight bars or U-shaped bars. The specific shape and quantity are determined according to design requirements. The straight bars are directly welded to the inner wall of the steel pipe 1501 to provide direct connecting force. The U-shaped bars are similar in shape to a U shape, which can provide better connection stability and shear resistance. The connecting steel bars 1504 are usually symmetrically arranged inside the steel pipe 1501 and fixed to the inner wall of the steel pipe 1501 by double-sided welding to ensure that the connection is firm and reliable. This arrangement method helps to balance the stress distribution of the support leg prefabricated part 15 when it is subjected to external loads, thereby improving the overall performance of the structure. As an important part of the bridge rotation construction, the design rationality and construction quality of the support leg prefabricated part 15 are directly related to the safety and stability of the entire rotation construction. Through the above detailed description, it can be seen that the support leg prefabricated part 15 has the advantages of reasonable structure, firm connection, good stability, etc., which can meet the needs of bridge rotation construction.

[0035] Furthermore, the slide plate 1502 is fan-shaped, and a gap of 10-20 mm is reserved between the bottom of the slide plate and the top surface of the annular slideway 17 .

[0036] Specifically, Figure 5As shown, the skateboard 1502 is fan-shaped, which helps to ensure that the support leg prefabricated part 15 can evenly distribute the pressure on the annular slide 17 and provide stable support. The fan-shaped design can also enable the skateboard 1502 to better follow the annular trajectory on the slide and reduce the resistance during sliding. The 10-20mm gap reserved between the bottom of the skateboard 1502 and the top surface of the annular slide 17 has the following purpose: during the rotation of the bridge, the support leg prefabricated part 15 and the annular slide 17 may be subjected to certain stress and deformation. The reserved gap can accommodate these deformations to avoid excessive friction or jamming between the skateboard 1502 and the slide. The reserved gap also makes it easier to adjust the support leg prefabricated part 15 on the slide to adapt to different construction requirements or correct position deviations. In actual construction, it can be The gap is filled with lubricant or shock-absorbing material to further reduce the friction and vibration between the skateboard 1502 and the slideway, and improve the smoothness and stability of sliding. Before installing the support foot prefabricated part 15, the gap between the skateboard 1502 and the annular slideway 17 should be accurately measured to ensure that the gap size meets the design requirements. During the construction process, the surface of the skateboard 1502 and the annular slideway 17 should be cleaned regularly to remove debris and dust to maintain good sliding performance. At the same time, the skateboard 1502 and the slideway should be maintained and inspected as necessary to ensure that they are intact. According to construction needs, lubricant or shock-absorbing material can be filled in the gap between the skateboard 1502 and the slideway to improve the smoothness and stability of sliding, but care should be taken to select suitable lubricants and shock-absorbing materials to avoid adverse effects on the environment and structure.

[0037] Furthermore, the stud 1505 is a round head stud, the length of the stud 1505 is 65-150 mm, the nominal diameter is 14-24 mm, and the welding direction is perpendicular to the outer wall of the steel pipe 1501.

[0038] Example 3

[0039] Furthermore, the fluid substance is silicone grease, butter or hydraulic oil.

[0040] In the present embodiment, specifically, the fluid material filled in the pelvic cavity 9 is a rigid fluid, preferably silicone grease. In addition, the fluid material may also select other rigid fluids having similar properties to silicone grease, such as horse oil, butter, hydraulic oil and / or soft rubber, etc. Specifically, the silicone grease is preferably silicone grease with strong lubrication function. Lubricating silicone grease is a translucent paste made by thickening synthetic oil with an inorganic thickener and adding a variety of additives and structural improvers. It can be used for lubrication and sealing between metal and metal, metal and plastic moving parts, and can also be used for lubrication, sealing and insulation of various sliding parts in humid environments. Silicone grease is a rigid fluid.

[0041] Furthermore, an injection channel 8 connected to the pelvic cavity 9 is opened on the side wall of the pelvic cavity 9 , and the force measuring interface 4 is arranged at the inlet of the injection channel 8 .

[0042] Specifically, Figure 2 As shown, the injection channel 8 is opened on the side wall of the pelvic cavity 9 and is connected to the inside of the pelvic cavity 9, and is used to inject or discharge fluid material into the pelvic cavity 9. The force measuring interface 4 is arranged at the inlet of the injection channel 8, is sealed and connected to the injection channel 8, and is connected to a pressure sensing element 13. In the initial state, the pelvic cavity 9 is filled with an appropriate amount of fluid material through the injection channel 8. When a vertical force acts on the lower ball joint 2, the lower ball joint 2 will squeeze the fluid material in the pelvic cavity 9 to increase its pressure. The fluid material with increased pressure flows to the force measuring interface 4 through the injection channel 8, and the pressure sensing element 13 detects the pressure change. The pressure sensing element 13 converts the detected pressure into an electrical signal or other measurable signal, thereby obtaining the magnitude of the vertical force. The sealed connection between the lower ball joint 2 and the pelvic cavity 9 and between the injection channel 8 and the force measuring interface 4 ensures the sealing of the system and prevents leakage of fluid material. The magnitude of the vertical force can be measured more accurately through the transfer of fluid material and detection by the pressure sensing element 13. Through the injection channel 8, the fluid material can be easily injected or discharged into the pelvic cavity 9 to adapt to different working environments or requirements. Due to the movable connection between the upper ball joint 1 and the lower ball joint 2, the force measuring swivel ball joint may have a certain rotation or tilting ability to adapt to different measurement requirements.

[0043] Furthermore, a rubber sealing ring 3 is embedded at the edge where the lower end of the lower ball joint 2 contacts the side wall of the pelvic cavity 9 , and the rubber sealing ring 3 is pressed tightly between the side wall of the lower ball joint 2 and the side wall of the pelvic cavity 9 .

[0044] Specifically, Figure 2 As shown, a rubber sealing ring 3 is embedded at the edge where the lower end of the lower ball joint 2 contacts the side wall of the pelvic cavity 9. The rubber sealing ring 3 is embedded at the edge where the lower ball joint 2 contacts the side wall of the pelvic cavity 9 to ensure the sealing between the two. The rubber sealing ring 3 is pressed between the side wall of the lower ball joint 2 and the side wall of the pelvic cavity 9 to prevent leakage of fluid substances. The design of the rubber sealing ring 3 ensures a tight connection between the lower ball joint 2 and the pelvic cavity 9, effectively preventing leakage of fluid substances and ensuring the stability and accuracy of the system. The rubber sealing ring 3 has good wear resistance and can maintain a stable sealing effect between the lower ball joint 2 and the side wall of the pelvic cavity 9 for a long time. Through the transmission of fluid substances and the detection of the pressure-sensing element 13, combined with the good sealing environment provided by the rubber sealing ring 3, the magnitude of the vertical force can be measured more accurately. When the rubber sealing ring 3 needs to be replaced or repaired, it can be replaced by disassembling the lower ball joint 2, ensuring the maintainability of the system.

[0045] Furthermore, the pressure sensing element 13 is a diffused silicon pressure sensor, a ceramic pressure sensor or a stress sheet, and the pressure sensing element 13 is distributed in a cross shape around the lower ball joint 2 , and the pressure sensing element 13 is sealed and connected to the force measuring interface 4 by threaded engagement.

[0046] Specifically, the pressure-sensitive element 13 can be implemented by selecting a variety of existing commercially available products. The pressure-sensitive element 13 can monitor pressure signals and convert pressure signals into usable output electrical signals according to certain rules, such as MEMS sensors, diffused silicon pressure sensors, ceramic pressure sensors or stress gauges. Pressure sensors can also be selected. In this embodiment, the pressure-sensitive element 13 is preferably a MEMS sensor. The MEMS sensor is a thin film element that deforms when subjected to pressure. A strain gauge (piezoresistive sensing) is provided inside the MEMS sensor to measure this deformation, and it can also be measured by capacitive sensing of the change in the distance between the two surfaces. The pressure value detected by the MEMS sensor can be deduced based on the deformation amount. The pressure-sensitive element 13 is distributed in a cross shape around the lower ball joint 2, and can measure force in multiple directions. The force measurement interface 4 is sealed and connected to the pressure-sensitive element 13 by threaded mating. Sealing strips, sealing rings and other elements that increase the sealing effect can also be provided at the threaded mating.

[0047] Furthermore, the bottom surface of the upper ball joint 1 and the top surface of the lower ball joint 2 are in spherical contact. The bottom surface of the upper ball joint 1 is a convex spherical surface 14 protruding downward, and the top surface of the lower ball joint 2 is a concave spherical surface 7 recessed downward. The top surface of the lower ball joint 2 is embedded with an adaptive spherical slide plate 12. A positioning pin 11 protruding upward is provided at the center of the top surface of the lower ball joint 2. A pin hole 10 recessed upward and adapted to the positioning pin 11 is provided at the center of the bottom surface of the upper ball joint 1. The positioning pin 11 is rotatably matched with the pin hole 10.

[0048] Specifically, Figure 1 As shown, the bottom surface of the upper ball joint 1 is designed to be a convex spherical surface 14 protruding downward, and the convex spherical surface 14 forms a spherical contact with the top surface of the lower ball joint 2. The top surface of the lower ball joint 2 is designed to be a concave spherical surface 7 recessed downward, which cooperates with the convex spherical surface 14 of the upper ball joint 1 to form a spherical contact. A rubber sealing ring 3 is embedded at the edge where the lower end of the lower ball joint 2 contacts the side wall of the pelvic cavity 9 to ensure the sealing between the pelvic cavity 9. It is embedded in the top surface of the lower ball joint 2 and contacts the convex spherical surface 14 of the upper ball joint 1. The spherical slide plate 12 is usually made of wear-resistant, low-friction material, such as stainless steel or polymer material, and is used to provide smooth spherical sliding between the upper ball joint 1 and the lower ball joint 2. When subjected to external force, relative movement will occur between the upper ball joint 1 and the lower ball joint 2. Due to the spherical contact design, this movement can be multi-directional, including rotation and tilting. The presence of the spherical slide 12 reduces the friction between the upper ball joint 1 and the lower ball joint 2, making this movement smoother, thereby making the bridge smoother during the rotation process.

[0049] The locating pin 11 of the lower ball joint 2 forms a rotational fit with the pin hole 10 of the upper ball joint 1. This cooperation allows the upper ball joint 1 to maintain a stable center position relative to the lower ball joint 2, ensuring that the relative movement between the upper ball joint 1 and the lower ball joint 2 is carried out on a predetermined center axis, thereby improving the stability and accuracy of the rotation, reducing the performance degradation and damage caused by friction and wear, and extending the service life. The materials of the locating pin 11 and the pin hole 10 should have sufficient strength and wear resistance to ensure stability and reliability for long-term use. The fitting tolerance of the locating pin 11 and the pin hole 10 should be controlled within a reasonable range, which is necessary to ensure the smoothness of the rotation and avoid instability caused by excessive clearance. An appropriate lubrication structure or lubricant can be designed between the locating pin 11 and the pin hole 10 to reduce friction resistance and improve the smoothness of the rotation. The positioning and rotation matching design between the lower ball joint 2 and the upper ball joint 1 in the force measuring swivel ball joint, through the precise matching of the positioning pin 11 and the pin hole 10, enables the two to rotate in multiple directions while maintaining a stable center position. This design not only improves the stability and accuracy of the rotation, but also extends the service life, providing a strong guarantee for the performance of the force measuring swivel ball joint.

[0050] The above is only a preferred embodiment of the utility model and does not limit the utility model in any form. According to the technical essence of the utility model, within the spirit and principles of the utility model, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the utility model.

Claims

1. A ball joint device for real-time monitoring of unbalanced forces during rotation construction, comprising an upper bearing platform, a lower bearing platform, an upper ball joint (1), a lower ball joint (2), a prefabricated support leg (15), and a base (5), wherein the upper ball joint (1) is rotatably connected to the lower ball joint (2), and is characterized in that: The base (5) is located on the lower support platform, and a basin cavity (9) is provided on the base (5), and the basin cavity (9) is filled with fluid material. The basin cavity (9) is suitable for the lower ball joint (2) to be embedded, and the lower ball joint (2) is sealed and connected to the basin cavity (9). A force measuring interface (4) is provided on the side wall of the basin cavity (9), and the force measuring interface (4) is sealed and connected to a pressure sensing element (13). Under the action of vertical force, the lower ball joint (2) squeezes the fluid material, and the pressure sensing element (13) detects the squeezing force exerted on the fluid material to obtain the vertical force. An annular slideway (17) located outside the lower ball joint (2) is provided on the lower support platform, and the support leg prefabricated parts (15) are distributed in an annular shape on the annular slideway (17), and a sand box (16) for adjusting the state of the beam body is provided between two adjacent support leg prefabricated parts (15).

2. A ball joint device for real-time monitoring of unbalanced force during rotation construction according to claim 1, characterized in that: The support leg prefabricated component (15) is composed of a steel pipe (1501), a concrete column poured inside the steel pipe (1501) and a precast concrete block wrapped outside the steel pipe (1501); a plurality of studs (1505) are welded to the outer wall of the steel pipe (1501), and spiral steel bars (1503) are arranged; the precast concrete block is connected to the steel pipe (1501) as a whole through the studs (1505) and the spiral steel bars (1503); the support leg prefabricated component (15) is composed of two steel pipes (1501) and two connecting flat steel plates (1506) connecting the two steel pipes (1501); a slide plate (1502) is provided at the bottom of the two steel pipes (1501); a plurality of connecting steel bars (1504) are welded inside each steel pipe (1501) to strengthen the connection between the support leg prefabricated component (15) and the upper ball joint (1).

3. A ball joint device for real-time monitoring of unbalanced force during rotation construction according to claim 2, characterized in that: The connecting steel bars (1504) are arranged symmetrically and welded to the inner wall of the steel pipe (1501) on both sides. The connecting steel bars (1504) are straight bars or U-shaped bars.

4. A ball joint device for real-time monitoring of unbalanced force during rotation construction according to claim 2, characterized in that: The slide plate (1502) is fan-shaped, and a gap of 10-20 mm is reserved between its bottom and the top surface of the annular slideway (17).

5. A ball joint device for real-time monitoring of unbalanced force during rotation construction according to claim 2, characterized in that: The stud (1505) is a round head stud, the length of the stud (1505) is 65-150 mm, the nominal diameter is 14-24 mm, and the welding direction is perpendicular to the outer wall of the steel pipe (1501).

6. The ball joint device for real-time monitoring of unbalanced force during rotation construction according to claim 1 is characterized in that: The fluid substance is silicone grease, butter or hydraulic oil.

7. A ball joint device for real-time monitoring of unbalanced force during rotation construction according to claim 1, characterized in that: The side wall of the pelvic cavity (9) is provided with an injection channel (8) connected to the pelvic cavity (9), and the force measuring interface (4) is arranged at the inlet of the injection channel (8).

8. The ball joint device for real-time monitoring of unbalanced force during rotation construction according to claim 1 is characterized in that: A rubber sealing ring (3) is embedded at the edge where the lower end of the lower ball joint (2) contacts the side wall of the pelvic cavity (9), and the rubber sealing ring (3) is pressed tightly between the side wall of the lower ball joint (2) and the side wall of the pelvic cavity (9).

9. The ball joint device for real-time monitoring of unbalanced force during rotation construction according to claim 1, characterized in that: The pressure-sensitive element (13) is a diffused silicon pressure sensor, a ceramic pressure sensor or a stress sheet. The pressure-sensitive element (13) is distributed in a cross shape around the lower ball joint (2). The pressure-sensitive element (13) is sealed and connected to the force measuring interface (4) by means of threaded engagement.

10. The ball joint device for real-time monitoring of unbalanced force during rotation construction according to claim 1, characterized in that: The bottom surface of the upper ball joint (1) and the top surface of the lower ball joint (2) are in spherical contact. The bottom surface of the upper ball joint (1) is a convex spherical surface (14) protruding downward, and the top surface of the lower ball joint (2) is a concave spherical surface (7) concave downward. An adaptive spherical slide plate (12) is embedded in the top surface of the lower ball joint (2). A positioning pin (11) protruding upward is provided at the center of the top surface of the lower ball joint (2). A pin hole (10) concave upward and adapted to the positioning pin (11) is provided at the center of the bottom surface of the upper ball joint (1). The positioning pin (11) and the pin hole (10) are rotatably matched.

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