Self-lubricating composite spherical hinge and swivel construction monitoring system thereof

Abstract

The utility model relates to the technical field of building construction, in particular to a self-lubricating composite spherical hinge and a swivel construction monitoring system thereof, and the self-lubricating composite spherical hinge comprises an upper spherical hinge and a lower spherical hinge. A lubricating groove capable of storing a lubricating medium is formed in the upper spherical hinge; a concave matching wall face matched with the convex matching wall face is arranged on the lower spherical hinge, a heat conduction groove is formed in the concave matching wall face, and a heat conduction piece is arranged in the heat conduction groove. According to the invention, the convex matching wall surface is provided with a lubricating groove capable of storing a lubricating medium. Lubricating media are stored in the lubricating grooves, lubrication can be continuously provided for the matched wall face in the rotating process of the spherical hinge, friction force is reduced, abrasion is reduced, the rotating performance of the spherical hinge is improved, and the service life of the spherical hinge is prolonged. A heat conduction groove is formed in the lower spherical hinge, and a heat conduction piece is arranged in the heat conduction groove. The heat conduction piece can quickly conduct heat generated in the working process of the spherical hinge to the outside, and the temperature of the spherical hinge is reduced.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and more specifically, to a self-lubricating composite ball joint and its rotation construction monitoring system. Background Technology

[0002] Rotation construction technology, as an important method in bridge engineering, is widely used in scenarios such as crossing existing railways, highways, or complex terrain. Traditional rotation structures mainly use concrete hinges or pure steel ball hinges as core support components. Their working principle is to achieve the rotation and positioning of the superstructure through spherical contact. Concrete hinges are composed of upper and lower spherical concrete structures, and the curvature of the spherical surfaces must be precisely matched during construction; pure steel ball hinges are made of high-strength cast steel, and the spherical fit is formed through machining.

[0003] In engineering practice, it has been found that these two traditional hinge types have significant technical limitations: concrete hinges are prone to localized crushing under heavy loads, with a friction coefficient as high as 0.15-0.2, requiring greater traction force during rotation; while pure steel ball hinges offer improved load-bearing capacity, they generate significant frictional heat during prolonged rotation, potentially leading to lubrication failure or even metal adhesion. With the increasing demand for modern bridges with longer spans and larger tonnages, especially those exceeding 200 meters in span and 30,000 tons in rotation weight, these traditional hinge types are no longer sufficient to meet the comprehensive requirements of low friction coefficient, high load-bearing capacity, and stability in engineering practice. Utility Model Content

[0004] The purpose of this application is to provide a self-lubricating composite ball joint and a rotation construction monitoring system, wherein the self-lubricating composite ball joint can achieve lubrication and good heat dissipation.

[0005] To achieve the above objectives, in a first aspect, this utility model provides a self-lubricating composite ball joint, comprising:

[0006] The upper ball joint has a convex mating wall surface, and a lubrication groove for storing lubricating medium is formed on the convex mating wall surface;

[0007] The lower ball joint has a concave mating wall that mates with the convex mating wall. A heat-conducting groove is formed on the concave mating wall, extending from the center of the concave mating wall to the edge and outside the concave mating wall. A heat-conducting element is provided in the heat-conducting groove.

[0008] In an optional embodiment, the upper ball joint is provided with a lubrication medium replenishment channel that connects to the lubrication groove.

[0009] In an optional embodiment, the inner wall of the lubrication groove is a hemispherical inner wall, and the opening of the lubrication groove faces the concave mating wall surface.

[0010] In an optional embodiment, the number of heat-conducting grooves is at least two, and correspondingly, the number of heat-conducting elements is at least two, with at least two heat-conducting grooves arranged radially between them.

[0011] In an optional embodiment, the lower ball joint has a base, on which an annular groove is provided, the axis of which coincides with the rotation center of the upper ball joint;

[0012] The upper ball joint is provided with a support foot, which is used to support the upper ball joint. One end of the support foot away from the upper ball joint is located in the annular groove. The rotation of the upper ball joint drives the support foot to rotate in the annular groove. The side wall of the annular groove limits the displacement of the support foot, so that the support foot rotates about the rotation center of the upper ball joint.

[0013] In an optional embodiment, a rolling element is provided on the end of the support foot away from the upper ball joint. The rolling element rolls in contact with the bottom wall of the annular groove. The rotation of the upper ball joint causes the support foot and the rolling element to rotate in the annular groove around the rotation center of the upper ball joint.

[0014] In an optional embodiment, a limiting guide for correcting the rotation angle of the upper ball joint is further included. The limiting guide includes a first cable wound around the upper ball joint, a second cable wound around the upper ball joint in the opposite direction to the first cable, a first drive mechanism for pulling the first cable to rotate the upper ball joint in the forward direction, a second drive mechanism for pulling the second cable to rotate the upper ball joint in the reverse direction, a first fixing seat for providing a mounting base for the first drive mechanism, and a second fixing seat for providing a mounting base for the second drive mechanism.

[0015] Secondly, this utility model provides a rotation construction monitoring system, installed on a self-lubricating composite ball joint as described in any of the foregoing embodiments, the rotation construction monitoring system comprising:

[0016] The feature acquisition module is configured to acquire the operating state features of the self-lubricating composite ball joint. The feature acquisition module includes a pressure acquisition unit, which is configured to be installed on the convex mating wall and / or the concave mating wall, for acquiring the contact pressure distribution between the concave mating wall and the convex mating wall.

[0017] A counterweight module is mounted on the upper ball joint and balances the torque applied by the upper ball joint to the lower ball joint based on the contact pressure distribution of the concave mating wall and the convex mating wall.

[0018] In an optional implementation, a feedback module is also included, which is configured to output a warning feedback when the operating state characteristic exceeds the warning value.

[0019] In an optional embodiment, the feature acquisition module further includes a lubricating medium thickness acquisition unit, which is configured to acquire the thickness of the lubricating medium on the convex mating wall and / or the concave mating wall, and the feedback module outputs a warning feedback when the thickness of the lubricating medium is less than or equal to the warning thickness.

[0020] And / or the feature acquisition module further includes a temperature acquisition module, which is used to acquire the heating rate of the self-lubricating composite ball joint, and the feedback module outputs a warning feedback when the heating rate is greater than or equal to the warning heating rate.

[0021] In this application, a lubrication groove is formed on the convex mating wall surface to store a lubricating medium. By storing the lubricating medium in the lubrication groove, continuous lubrication can be provided to the mating wall surface during the rotation of the ball joint, reducing friction, decreasing wear, and improving the rotational performance and service life of the ball joint. A heat-conducting groove is provided on the lower ball joint, and a heat-conducting element is installed in the heat-conducting groove. The heat-conducting element can quickly conduct away the heat generated during the operation of the ball joint, reducing the temperature of the ball joint and ensuring that the ball joint operates within its normal operating temperature range, thereby improving the reliability and stability of the ball joint.

[0022] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure from one perspective of one embodiment of the self-lubricating composite ball joint provided in this application;

[0025] Figure 2 for Figure 1 Schematic diagram of the structure at point A;

[0026] Figure 3 A two-view structural schematic diagram of the upper ball joint of one embodiment of the self-lubricating composite ball joint provided in this application;

[0027] Figure 4A schematic diagram of the lower ball joint from one perspective of one embodiment of the self-lubricating composite ball joint provided in this application;

[0028] Figure 5 for Figure 4 Schematic diagram of the structure at point B;

[0029] Figure 6 A three-view structural schematic diagram of the lower ball joint of one embodiment of the self-lubricating composite ball joint provided in this application;

[0030] Figure 7 This is a three-view structural schematic diagram of one embodiment of the self-lubricating composite ball joint provided in this application.

[0031] icon:

[0032] 100 - Upper ball joint; 110 - Convex mating wall; 120 - Support foot; 130 - Rolling element; 140 - Lubrication groove; 150 - Lubrication medium replenishment channel;

[0033] 200 - Lower ball joint; 210 - Concave mating wall; 220 - Heat conduction groove; 240 - Annular groove;

[0034] 300 - Limiting guide component; 310 - First cable; 320 - Second cable; 330 - First drive mechanism; 340 - Second drive mechanism; 350 - First fixed seat; 360 - Second fixed seat;

[0035] 400-Counterweight Module. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] In traditional ball joints, the lack of effective lubrication during rotation leads to significant friction between the mating surfaces of the upper ball joint 100 and the lower ball joint 200. This friction not only makes rotation difficult and increases the energy consumption of the drive equipment, but also accelerates the wear of the mating surfaces. Over time, this increased wear widens the gap in the ball joint, reduces rotational accuracy, and may even cause the ball joint to seize up, rendering it unable to function properly. For example, in bridge rotation construction, poor lubrication of the ball joint will result in significant resistance during rotation, increasing the difficulty of rotation and potentially damaging the bridge structure, affecting its safety and stability.

[0040] During operation, ball joints generate a significant amount of heat due to friction. If this heat cannot be dissipated effectively and promptly, the joint's temperature will continuously rise. High temperatures can alter the properties of the ball joint material, such as reducing strength and hardness, thereby affecting its load-bearing capacity and service life. Furthermore, high temperatures may degrade the lubricating medium, rendering it ineffective and further exacerbating wear on the ball joint.

[0041] To address the aforementioned technical problems, this application provides a self-lubricating composite ball joint and a rotation construction monitoring system for monitoring the operating status of the self-lubricating composite ball joint.

[0042] Firstly, such as Figure 1 As shown, the self-lubricating composite ball joint includes an upper ball joint 100 and a lower ball joint 200, wherein the upper ball joint 100 has a convex mating wall surface 110; as Figure 2 and Figure 3 As shown, a lubrication groove 140 is provided on the convex mating wall 110 to store lubricating medium. By storing lubricating medium in the lubrication groove 140, continuous lubrication can be provided to the mating wall during the rotation of the ball joint, reducing friction, decreasing wear, and improving the rotational performance and service life of the ball joint. Continuous lubrication reduces direct contact and wear between the mating walls, extending the service life of the ball joint and reducing the probability of increased clearance and jamming caused by wear, thus improving the reliability and stability of the ball joint. For example, in bridge rotation construction, good lubrication can avoid problems such as increased rotation resistance, increased rotation difficulty, and damage to the bridge structure caused by poor lubrication, ensuring the safety and stability of the bridge.

[0043] At the same time, such as Figure 1 As shown, the lower ball joint 200 is provided with a concave mating wall surface 210 that mates with the convex mating wall surface 110; as Figures 4 to 6 As shown, a heat-conducting groove 220 is formed on the concave mating wall 210, extending from the center to the edge outside the concave mating wall 210. A heat-conducting element is disposed within the heat-conducting groove 220. The heat-conducting element can quickly conduct away the heat generated during the operation of the ball joint, reducing the temperature of the ball joint and ensuring that it operates within its normal operating temperature range, thereby improving the reliability and stability of the ball joint. High temperatures can also cause the lubricating medium to deteriorate, losing its lubricating effect and further aggravating the wear of the ball joint. Timely heat dissipation can prevent the lubricating medium from deteriorating due to high temperatures, ensuring that the lubricating medium always maintains good lubricating performance, further protecting the mating wall of the ball joint and reducing wear.

[0044] For example, typically, the upper ball joint 100 is connected to the bridge swivel, and the lower ball joint 200 is located on the foundation or on the pier.

[0045] For example, the heat-conducting component is at least one of the following: graphite, graphene, metal heat-conducting strip, etc.

[0046] The lubricating medium may be a solid lubricant, a liquid lubricant, or a grease lubricant. Solid lubricants may be graphite, molybdenum disulfide, or polytetrafluoroethylene, etc.; liquid lubricants may be mineral oil, vegetable oil, emulsifier, or water, etc.; and grease lubricants may be mineral grease and animal grease, etc.

[0047] like Figure 1 and Figure 2 As shown, in one embodiment, the upper ball joint 100 is provided with a lubrication medium replenishment channel 150 that connects to the lubrication groove 140. External lubrication medium is replenished into the lubrication groove 140 through the lubrication medium replenishment channel 150, so that the lubrication groove 140 always has lubrication medium to ensure the lubrication effect.

[0048] For example, one end of the lubricating medium replenishment channel 150 is connected to the lubrication tank 140, and the other end of the lubricating medium replenishment channel 150 is connected to a lubricating medium pump station; the lubricating medium pump station stores lubricating medium and is also provided with pipelines and a pump for pumping the lubricating medium to the lubricating medium replenishment channel 150.

[0049] By providing a lubrication medium replenishment channel 150, external lubrication medium can be continuously replenished into the lubrication groove 140. This ensures that the lubrication groove 140 always has sufficient lubrication medium, allowing continuous lubrication between the mating surfaces during the rotation of the ball joint. This effectively reduces the friction between the mating surfaces of the upper ball joint 100 and the lower ball joint 200, preventing a decrease in lubrication effect due to insufficient lubrication medium, thus guaranteeing the smooth rotation of the ball joint. Continuous lubrication reduces direct contact and wear between the mating surfaces, extending the service life of the ball joint and improving its reliability and stability.

[0050] like Figure 2 and Figure 3 As shown, in one embodiment, the inner wall of the lubrication groove 140 is a hemispherical inner wall, and the opening of the lubrication groove 140 faces the concave mating wall surface 210.

[0051] For example, the diameter of the hemispherical inner wall of the lubrication groove 140 is larger than the diameter of the lubrication medium replenishment channel 150.

[0052] Compared to other shapes, the hemispherical inner wall has a larger volume, allowing it to store more lubricating medium. During the long-term operation of the ball joint, even if some lubricating medium is consumed, the lubrication groove 140 of the hemispherical inner wall can still ensure sufficient lubricating medium to maintain good lubrication, extending the lubrication cycle and reducing the frequency of adding lubricating medium.

[0053] The opening of the lubrication groove 140 faces the concave mating wall 210. The hemispherical inner wall of the lubrication groove 140 facilitates the flow of the lubricating medium. When the ball joint rotates relative to the lubricating surface, the lubricating medium, under the action of centrifugal force and the relative motion of the mating wall, flows more easily from the lubrication groove 140 and covers the concave mating wall 210. This design enables the lubricating medium to reach the friction parts in a timely and effective manner, improving the timeliness and effectiveness of lubrication.

[0054] like Figures 4 to 6 As shown, in one embodiment, the number of heat-conducting grooves 220 is at least two, and correspondingly, the number of heat-conducting elements is at least two, with the at least two heat-conducting grooves 220 being radially distributed between them.

[0055] For example, there are two heat-conducting grooves 220, and correspondingly, two heat-conducting elements. In another embodiment, there are three heat-conducting grooves 220, and correspondingly, three heat-conducting elements. In another embodiment, there are four heat-conducting grooves 220, and correspondingly, four heat-conducting elements. In yet another embodiment, there are five heat-conducting grooves 220, and correspondingly, five heat-conducting elements. Of course, other numbers of heat-conducting grooves 220 and heat-conducting elements can also be provided, such as six, seven, or eight, etc.

[0056] The arrangement of multiple heat-conducting grooves 220 and corresponding heat-conducting components significantly increases the contact area with the heat source and the heat dissipation environment. Taking four heat-conducting grooves 220 as an example, compared with a single heat-conducting groove 220, the surface area in contact with the heat source is greatly increased, and the heat-conducting components can also more fully exchange heat with the surrounding medium (such as air, coolant, etc.), thereby accelerating the heat transfer speed and improving the overall heat conduction efficiency.

[0057] like Figure 1 As shown, in one embodiment, the lower ball joint 200 has a base on which an annular groove 240 is provided, the axis of which coincides with the rotation center of the upper ball joint 100.

[0058] The upper ball joint 100 is provided with a support foot 120, which is used to support the upper ball joint 100. The end of the support foot 120 away from the upper ball joint 100 is located in the annular groove 240. The rotation of the upper ball joint 100 causes the support foot 120 to rotate in the annular groove 240. The side wall of the annular groove 240 limits the displacement of the support foot 120, so that the support foot 120 rotates around the rotation center of the upper ball joint 100. This avoids the upper ball joint 100 from deflecting, wobbling or other unstable situations during rotation, and ensures the smoothness and accuracy of the rotation of the upper ball joint 100.

[0059] For example, the opening of the annular groove 240 faces upward, and the annular groove 240 has a bottom wall and two side walls connected to the bottom wall, with the bottom wall being horizontally positioned.

[0060] For example, multiple support legs 120 are arranged around the circumference of the upper ball joint 100, and the multiple support legs 120 are equidistantly distributed.

[0061] like Figure 1 As shown, in one embodiment, a rolling element 130 is provided on the end of the support leg 120 away from the upper ball joint 100. The rolling element 130 rolls with the bottom wall of the annular groove 240. The rotation of the upper ball joint 100 causes the support leg 120 and the rolling element 130 to rotate around the rotation center of the upper ball joint 100 in the annular groove 240.

[0062] By way of example, the rolling element 130 includes balls. In another embodiment, the rolling element 130 includes a caster wheel.

[0063] A rolling element 130 is installed between the support leg 120 and the bottom wall of the annular groove 240 to transform the original sliding friction into rolling friction. The coefficient of friction of rolling friction is much smaller than that of sliding friction. For example, when a ball or caster rolls on the bottom wall of the annular groove 240, the relative movement of the contact surfaces greatly reduces the friction.

[0064] The rolling engagement of the rolling element 130 makes the rotation of the support foot 120 in the annular groove 240 smoother, reducing the jamming and shaking caused by friction.

[0065] like Figure 1 and Figure 7 As shown, in one embodiment, the self-lubricating composite ball joint further includes a limiting guide 300 for correcting the rotation angle of the upper ball joint 100. The limiting guide 300 includes a first cable 310 wound around the upper ball joint 100, a second cable 320 wound around the upper ball joint 100 in the opposite direction to the first cable 310, a first drive mechanism 330 that pulls the first cable 310 to rotate the upper ball joint 100 in the forward direction, a second drive mechanism 340 that pulls the second cable 320 to rotate the upper ball joint 100 in the reverse direction, a first mounting base 350 that provides a mounting base for the first drive mechanism 330, and a second mounting base 360 ​​that provides a mounting base for the second drive mechanism 340.

[0066] For example, the first fixing seat 350 and the second fixing seat 360 are fixed to the base of the lower ball joint 200.

[0067] For example, the first drive mechanism 330 and the second drive mechanism 340 include, but are not limited to, hydraulic telescopic rods, pneumatic telescopic rods, electric actuators, threaded screw mechanisms, or linear motors.

[0068] For example, one end of the first cable 310 is fixed to the upper ball joint 100, the middle portion of the first cable 310 is wound around the upper ball joint 100, and the other end of the first cable 310 passes through a through hole in the first fixing seat 350 and is fixed to the first drive mechanism 330; one end of the second cable 320 is fixed to the upper ball joint 100, the middle portion of the second cable 320 is wound around the upper ball joint 100, and the other end of the second cable 320 passes through a through hole in the second fixing seat 360 and is fixed to the second drive mechanism 340. The first cable 310 and the second cable 320 are steel wire ropes or the like. The winding directions of the first cable 310 and the second cable 320 on the upper ball joint 100 are opposite. During the forward rotation of the upper ball joint 100 driven by the first drive mechanism 330 via the first cable 310, the second cable 320 is wound around the upper ball joint 100; during the reverse rotation of the upper ball joint 100 driven by the second drive mechanism 340 via the second cable 320, the first cable 310 is wound around the upper ball joint 100.

[0069] By setting up a first cable 310 and a second cable 320 with opposite winding directions, which are respectively pulled by a first drive mechanism 330 and a second drive mechanism 340, precise control of the forward and reverse rotation of the upper ball joint 100 is achieved. When the upper ball joint 100 needs to rotate forward by a certain angle, the first drive mechanism 330 pulls the first cable 310, causing the upper ball joint 100 to rotate in a predetermined direction and angle; when reverse rotation is required, the second drive mechanism 340 pulls the second cable 320, which can also precisely control the rotation angle. When the upper ball joint 100 rotates too far forward, the second drive mechanism 340 pulls the second cable 320 to calibrate the rotation angle of the upper ball joint 100, and the same applies to excessive reverse rotation. This bidirectional precise control method can meet the precise requirements for the rotation angle of the upper ball joint 100 under different working conditions.

[0070] Secondly, embodiments of this application also provide a rotation construction monitoring system, which is installed on a self-lubricating composite ball joint as described in any of the above embodiments.

[0071] The rotation construction monitoring system includes a feature acquisition module and a counterweight module 400.

[0072] The feature acquisition module is configured to acquire the operating status features of the self-lubricating composite ball joint.

[0073] For example, operating characteristics include, but are not limited to, contact pressure distribution, temperature, lubricant thickness, weight, vibration frequency, and amplitude.

[0074] The feature acquisition module includes a pressure acquisition unit configured to be mounted on the convex mating wall 110 for acquiring the contact pressure distribution between the concave mating wall 210 and the convex mating wall 110; exemplarily, the pressure acquisition unit includes a pressure sensor.

[0075] The counterweight module 400 is mounted on the upper ball joint 100 and balances the torque applied by the upper ball joint 100 to the lower ball joint 200 based on the contact pressure distribution of the concave mating wall 210 and the convex mating wall 110.

[0076] For example, the counterweight module 400 includes a movable counterweight (single weight 50-100 tons, total adjustment range 500-1000 tons; of course, the counterweight can also be of other weights), a servo motor, a guide rail, and a gear and rack transmission mechanism; the guide rail is mounted on the upper ball joint 100, and the rack of the gear and rack transmission mechanism extends along the guide rail direction; the servo motor is mounted on the counterweight, the counterweight is movably mounted on the guide rail, and the gear of the gear and rack transmission mechanism is fixedly mounted on the servo motor. The rotation of the servo motor drives the gear to rotate on the rack, and the rack applies a reaction force to the gear, causing the gear to move on the rack. The movement of the gear drives the servo motor and the counterweight to move along the guide rail. The forward rotation of the servo motor causes the counterweight to move along a first direction, and the reverse rotation of the servo motor causes the counterweight to move in the opposite direction of the first direction; for example, the guide rail is configured as a ring-shaped guide rail, and the rack is correspondingly configured as a ring.

[0077] The feature acquisition module also includes a controller, which is electrically connected to the pressure sensor of the pressure acquisition unit and the servo motor of the counterweight module 400. During use, if the pressure sensor of the pressure acquisition unit detects that the pressure on one side of the contact point between the lower ball joint 200 and the upper ball joint 100 is too high and causes it to easily tip over, the pressure sensor sends the detection result to the controller. The controller controls the servo motor to rotate, so that the counterweight moves to the other side of the upper ball joint 100. The pressure sensor detects the pressure on the lower ball joint 200 in real time. When the pressure on the lower ball joint 200 is balanced, the controller stops the servo motor from driving the counterweight to move to the other side of the upper ball joint 100.

[0078] For example, the controller includes, but is not limited to, a central processing unit (CPU), a programmable logic controller (PLC), or an electronic device with logic control functions.

[0079] Unlike the above embodiment where the guide rail and rack are mounted on the upper ball joint 100, in another embodiment, a bridge swivel is mounted on the upper ball joint 100, and the guide rail and rack are mounted on the bridge swivel.

[0080] In another embodiment, the pressure acquisition unit is configured to be mounted on the concave mating wall 210.

[0081] In another embodiment, the pressure acquisition unit is configured to be mounted on the convex mating wall 110 and the concave mating wall 210.

[0082] In one embodiment, the rotation construction monitoring system further includes a feedback module configured to output early warning feedback when the operating status characteristics exceed the early warning value.

[0083] For example, the feedback module is electrically connected to the controller, which can control the feedback module to send a warning feedback to the outside world. For instance, if the controller detects from the pressure sensor that the pressure on one side of the contact point between the lower ball joint 200 and the upper ball joint 100 is greater than a warning value, the upper ball joint 100 is prone to tipping over, and the controller controls the feedback module to send a warning feedback to the outside world.

[0084] Exemplarily, the feedback module includes, but is not limited to, a speaker, a light-emitting element, a vibrator, and combinations thereof. The feedback module may also be one of the speaker, the light-emitting element, and the vibrator. The feedback module may also be a combination of at least two of the speaker, the light-emitting element, and the vibrator; for example, the feedback module includes a speaker and a light-emitting element; for example, the feedback module includes a speaker and a vibrator; for example, the feedback module includes a light-emitting element and a vibrator; for example, the feedback module includes a speaker, a light-emitting element, and a vibrator. The speaker is used to emit sound wave vibrations that can be heard by the user's ear; the light-emitting element is used to emit visible light that can be seen by the user's eye; the light-emitting element may consist of a single light-emitting unit, or it may be a screen formed by a regular arrangement of multiple light-emitting units; the vibrator can generate tactile vibrations that can be perceived by the user's receptors (such as Pacini bodies and Meissner bodies).

[0085] In one embodiment, the feature acquisition module further includes a lubricating medium thickness acquisition unit, which is configured to acquire the thickness of the lubricating medium on the convex mating wall 110, and the feedback module outputs a warning feedback when the thickness of the lubricating medium is less than or equal to the warning thickness.

[0086] For example, the lubricating medium thickness acquisition unit includes a laser rangefinder and / or an ultrasonic rangefinder; if the laser rangefinder detects that the thickness of the lubricating medium on the convex mating wall 110 is less than or equal to the warning thickness, the controller controls the feedback module to send a warning feedback to the outside. The warning thickness is, for example, a point value in the range of 0.03mm-0.06mm, etc., and of course, the warning thickness can also be other values.

[0087] In another embodiment, the controller is electrically connected to the pump of the lubricating medium pump station. When the laser rangefinder detects that the thickness of the lubricating medium on the convex mating wall 110 is less than or equal to the warning thickness, the controller starts the pump. When the laser rangefinder detects that the thickness of the lubricating medium on the convex mating wall 110 is greater than the design thickness, the controller stops the pump. The design thickness is, for example, 0.1mm-0.15mm, but of course, the design thickness can also be other values.

[0088] In another embodiment, the lubricating medium thickness acquisition unit is configured to acquire the thickness of the lubricating medium on the concave mating wall 210.

[0089] In another embodiment, the lubricating medium thickness acquisition unit is configured to acquire the thickness of the lubricating medium on the convex mating wall 110 and the concave mating wall 210.

[0090] In one embodiment, the feature acquisition module further includes a temperature acquisition module, which is used to acquire the heating rate of the self-lubricating composite ball joint. When the heating rate is greater than or equal to the warning heating rate, the feedback module outputs warning feedback.

[0091] For example, a temperature acquisition module is located at the end of the heat-conducting component to detect the heating rate of the component. When the heating rate of the heat-conducting component exceeds the warning heating rate, the controller outputs a warning feedback to the outside world through the feedback module. The warning heating rate is, for example, 5°C / min.

[0092] For example, the temperature acquisition module is a temperature sensor.

[0093] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0094] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A self-lubricating composite ball joint, characterized in that, include: The upper ball joint (100) has a convex mating wall (110) and a lubrication groove (140) for storing lubrication medium is provided on the convex mating wall (110). The lower ball joint (200) is provided with a concave mating wall (210) that mates with the convex mating wall (110). A heat-conducting groove (220) is provided on the concave mating wall (210). The heat-conducting groove (220) extends from the center of the concave mating wall (210) to the edge outside the concave mating wall (210). A heat-conducting element is provided in the heat-conducting groove (220).

2. The self-lubricating composite ball joint according to claim 1, characterized in that, The upper ball joint (100) is provided with a lubrication medium replenishment channel (150) that connects to the lubrication groove (140).

3. The self-lubricating composite ball joint according to claim 1, characterized in that, The inner wall of the lubrication groove (140) is a hemispherical inner wall, and the opening of the lubrication groove (140) faces the concave mating wall surface (210).

4. The self-lubricating composite ball joint according to claim 1, characterized in that, The number of heat-conducting grooves (220) is at least two, and correspondingly, the number of heat-conducting elements is at least two, with at least two heat-conducting grooves (220) arranged radially between them.

5. The self-lubricating composite ball joint according to claim 1, characterized in that, The lower ball joint (200) has a base, on which an annular groove (240) is provided, the axis of which coincides with the rotation center of the upper ball joint (100); The upper ball joint (100) is provided with a support foot (120), which is used to support the upper ball joint (100). One end of the support foot (120) away from the upper ball joint (100) is located in the annular groove (240). The rotation of the upper ball joint (100) drives the support foot (120) to rotate in the annular groove (240). The side wall of the annular groove (240) limits the displacement of the support foot (120), so that the support foot (120) rotates around the rotation center of the upper ball joint (100).

6. The self-lubricating composite ball joint according to claim 5, characterized in that, A rolling element (130) is provided on one end of the support leg (120) away from the upper ball joint (100). The rolling element (130) rolls with the bottom wall of the annular groove (240). The rotation of the upper ball joint (100) drives the support leg (120) and the rolling element (130) to rotate around the rotation center of the upper ball joint (100) in the annular groove (240).

7. The self-lubricating composite ball joint according to claim 1, characterized in that, It also includes a limiting guide (300) for correcting the rotation angle of the upper ball joint (100), the limiting guide (300) including a first cable (310) wound around the upper ball joint (100), a second cable (320) wound around the upper ball joint (100) and in the opposite direction to the winding of the first cable (310), a first drive mechanism (330) that pulls the first cable (310) to make the upper ball joint (100) rotate in the forward direction, a second drive mechanism (340) that pulls the second cable (320) to make the upper ball joint (100) rotate in the reverse direction, a first fixing seat (350) that provides a mounting base for the first drive mechanism (330), and a second fixing seat (360) that provides a mounting base for the second drive mechanism (340).

8. A rotation construction monitoring system, characterized in that, Installed on the self-lubricating composite ball joint as described in any one of claims 1 to 7, the rotation construction monitoring system comprises: The feature acquisition module is configured to acquire the operating state features of the self-lubricating composite ball joint. The feature acquisition module includes a pressure acquisition unit, which is configured to be installed on the convex mating wall surface (110) and / or the concave mating wall surface (210) for acquiring the contact pressure distribution between the concave mating wall surface (210) and the convex mating wall surface (110). A counterweight module (400) is mounted on the upper ball joint (100) and balances the torque applied by the upper ball joint (100) to the lower ball joint (200) based on the contact pressure distribution of the concave mating wall (210) and the convex mating wall (110).

9. The rotation construction monitoring system according to claim 8, characterized in that, It also includes a feedback module, which is configured to output a warning feedback when the operating status characteristic exceeds the warning value.

10. The rotation construction monitoring system according to claim 9, characterized in that, The feature acquisition module further includes a lubricating medium thickness acquisition unit, which is configured to acquire the thickness of the lubricating medium on the convex mating wall (110) and / or the concave mating wall (210), and the feedback module outputs a warning feedback when the thickness of the lubricating medium is less than or equal to the warning thickness. And / or the feature acquisition module further includes a temperature acquisition module, which is used to acquire the heating rate of the self-lubricating composite ball joint, and the feedback module outputs a warning feedback when the heating rate is greater than or equal to the warning heating rate.

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