Sector pressure induction self-lubricating bridge swivel spherical hinge

Abstract

The utility model relates to the technical field of bridge swivel construction equipment, in particular to a sectorial pressure sensing self-lubricating bridge swivel spherical hinge which comprises a lower spherical hinge body, an upper spherical hinge body, an oil nozzle, an oil supply mechanism, a pressure sensor and a control module, the lower spherical hinge body comprises a concave spherical surface, a sliding plate and a lower shaft sleeve, and the sliding plate is laid on the concave spherical surface; the lower shaft is sleeved at the center of the bottom of the concave spherical surface, the upper end of the lower shaft is communicated with the concave spherical surface, the lower end of the lower shaft is provided with an oil return port, the concave spherical surface is equally divided into a plurality of sectors, a plurality of oil nozzles are uniformly distributed in each sector, and the oil nozzles in each sector are connected with an oil supply mechanism through the same oil conveying pipe; the control module controls the oil supply mechanism to increase oil supply to the sectors with the pressure larger than the threshold value and reduce or stop oil supply to the sectors with the pressure smaller than the threshold value according to the pressure of the sectors, the pressure can be detected according to the sectors, lubricating oil can be automatically supplemented, and therefore the friction resistance of a bridge rotating body is reduced, and the lubricating cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of bridge rotation construction equipment, specifically relating to a sector-area pressure-sensing self-lubricating bridge rotation ball joint. Background Technology

[0002] Bridge spherical hinges, as core components in the construction of long-span bridges, have been widely used in railway and highway overpasses, canyon bridges, and urban interchange projects. Through the precise fit of the upper and lower spherical hinges, driven by a hydraulic jacking system, they enable accurate angular deflection of bridge structures capable of handling tens of thousands of tons, making them particularly suitable for bridge construction spanning existing traffic lines or complex terrain. The load-bearing capacity and friction control of the spherical hinges directly determine the structural stability, rotation accuracy, and construction safety during bridge rotation, representing a key breakthrough in bridge rotation construction technology.

[0003] In existing technologies, lubrication systems are commonly used to improve the friction performance of ball joints. Typical designs include an oil injection groove, an oil reservoir, and an automatic oil replenishment device. By injecting high-viscosity grease between the upper and lower ball joint contact surfaces, the self-lubricating properties of polymer materials (such as PTFE) or metal composite materials can be utilized to effectively reduce static and dynamic friction coefficients.

[0004] However, in actual engineering, due to complex factors such as bridge center of gravity shift, counterweight error and wind load, the rotating structure is difficult to achieve the absolute equilibrium state calculated in theory. During the rotation process, the pressure distribution on the lower ball joint contact surface is uneven, and the dynamic pressure imbalance causes the oil film thickness of the traditional lubrication structure to change in a gradient, which can easily cause problems such as scratches on the ball joint surface and carbonization of grease. This leads to increased frictional resistance during bridge rotation and increased lubrication costs. Therefore, it is necessary to improve the existing ball joint lubrication structure. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention proposes a sector-level pressure-sensing self-lubricating bridge spherical joint, which can detect pressure in each sector and automatically replenish lubricating oil, thereby reducing the frictional resistance of the bridge rotation and lowering lubrication costs.

[0006] To solve the above-mentioned technical problems, this utility model provides a sector-region pressure-sensing self-lubricating bridge spherical joint, comprising:

[0007] The lower ball joint includes a concave spherical surface, a sliding plate, and a lower bushing. The concave spherical surface is divided into multiple sectors. The sliding plate is laid on the concave spherical surface. The lower bushing is located at the bottom center of the concave spherical surface, with its upper end connected to the concave spherical surface and its lower end having an oil return port.

[0008] The upper ball joint is rotatably mounted on the lower ball joint and is rotatably connected to the lower bushing via a rotating shaft;

[0009] A plurality of oil injection nozzles are evenly distributed in each sector.

[0010] An oil supply mechanism is connected to the oil injection nozzles in each sector through an oil supply pipe, and the oil return port is connected to the oil supply mechanism through an oil supply pipe.

[0011] A pressure sensor is used to collect pressure data of each sector.

[0012] A control module is electrically connected to the oil supply mechanism and the pressure sensor.

[0013] Preferably, the lower ball joint further comprises a compression ring, and the concave spherical surface is spaced apart from the inside to the outside and provided with the sliding plate, and the inner and outer edges of the sliding plate are fixedly connected to the concave spherical surface through the compression ring.

[0014] Preferably, the inner and outer edges of the sliding plate are respectively provided with a stepped structure, the compression ring is embedded in the stepped structure, the upper surface is lower than the upper surface of the sliding plate, and the thickness of the sliding plate is greater than the thickness of the compression ring.

[0015] Preferably, the oil injection nozzle is embedded in the sliding plate, the upper end is lower than the upper surface of the sliding plate, and the lower end penetrates the sliding plate and the concave spherical surface and is connected to the oil supply pipe.

[0016] Preferably, the lower ball joint further comprises a lower annular plate and a lower rib plate, the lower surface of the concave spherical surface is spaced apart from the inside to the outside and provided with the lower annular plate, and the lower rib plate is circumferentially arrayed on the lower surface of the concave spherical surface, one end is connected to the lower shaft sleeve, and the other end extends to the circumference of the lower ball joint and is cross-connected to the lower annular plate.

[0017] Preferably, the lower ball joint further comprises a supporting plate, the supporting plate is circumferentially arrayed on the outside of the lower shaft sleeve, one end is connected to the lower rib plate, and the other end is connected to the lower part of the lower shaft sleeve.

[0018] Preferably, the lower ball joint is arranged on the supporting framework, the lower rib plate is connected to the supporting framework through a fastening bolt, and the bottom end of the lower shaft sleeve extends into the supporting framework.

[0019] Preferably, the upper ball joint comprises a convex spherical surface and an upper shaft sleeve, the convex spherical surface is matched with the concave spherical surface and is slidingly connected to the upper surface of the sliding plate, the upper shaft sleeve is arranged at the bottom center of the convex spherical surface, the upper end is arranged as a closed structure, the lower end is connected to the convex spherical surface, the upper end of the rotating shaft is rotatably arranged in the upper shaft sleeve, and the lower end is rotatably arranged in the lower shaft sleeve.

[0020] Preferably, in the above scheme, the upper spherical hinge further comprises an upper annular plate and an upper rib plate, the upper surface of the convex spherical surface is spaced from inside to outside and provided with the upper annular plate, and the upper rib plate is arranged in an array on the upper surface of the convex spherical surface, one end of the upper rib plate is connected with the upper shaft sleeve, and the other end extends to the circumference of the upper spherical hinge and is connected with the upper annular plate.

[0021] Preferably, in the above scheme, the oil supply mechanism comprises an oil pump and an electromagnetic valve, the oil pump is connected with the oil supply pipe of each sector through the electromagnetic valve, and the oil pump and the electromagnetic valve are electrically connected with the control module.

[0022] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0023] 1. A sectoral pressure sensing self-lubricating bridge turning body spherical hinge, comprising a lower spherical hinge, an upper spherical hinge, an oil nozzle, an oil supply mechanism, a pressure sensor and a control module, wherein the concave spherical surface of the lower spherical hinge is equally divided into a plurality of sectors, a plurality of oil nozzles are uniformly distributed in each sector, the oil nozzles in each sector are connected with the oil supply mechanism through the same oil supply pipe, the pressure sensor is used for collecting pressure data of each sector respectively, when unstable phenomenon occurs in the bridge turning construction process, the control module controls the oil supply mechanism to increase oil supply to the sector with pressure greater than the threshold value, and to reduce or stop oil supply to the sector with pressure less than the threshold value, so that sectoral pressure detection and automatic lubricating oil supplement can be realized, thereby reducing the friction resistance of the bridge turning and reducing the lubricating cost.

[0024] 2. The concave spherical surface in the utility model is spaced from inside to outside and provided with a sliding plate, the inner and outer edges of the sliding plate are respectively provided with a stepped structure, the compression ring is embedded in the stepped structure, the upper surface of the compression ring is lower than the upper surface of the sliding plate, the oil nozzle is embedded on the sliding plate, and the upper end of the oil nozzle is lower than the upper surface of the sliding plate, so that friction between the upper spherical hinge and the compression ring and the oil nozzle can be avoided.

[0025] 3. The oil supply mechanism in the utility model comprises an oil pump and an electromagnetic valve, the oil pump is connected with the oil supply pipe of each sector through the electromagnetic valve, so that the control module can control the oil supply state of each sector through the electromagnetic valve. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is an assembly diagram of the sectoral pressure sensing self-lubricating bridge turning body spherical hinge.

[0027] Figure 2 It is an elevation view of the lower spherical hinge.

[0028] Figure 3 It is a bottom view of the lower spherical hinge.

[0029] Figure 4 The arrangement plan view of the sliding plate, the oil nozzle and the compression ring.

[0030] Figure 5 The A partial enlarged view in the utility model Figure 2 .

[0031] 1 - lower ball joint, 11 - concave spherical surface, 12 - sliding plate, 121 - stepped structure, 13 - lower shaft sleeve, 131 - oil return port, 14 - compression ring, 15 - lower annular plate, 16 - lower rib plate, 17 - bracing plate, 2 - upper ball joint, 21 - convex spherical surface, 22 - upper shaft sleeve, 23 - upper annular plate, 24 - upper rib plate, 3 - rotating shaft, 4 - oil nozzle, 5 - oil supply mechanism, 6 - control module, 7 - support framework. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] In the description of the utility model, it is necessary to explain that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the drawings shown, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0034] In the description of the utility model, the meaning of several is one or more, and the meaning of multiple is two or more, and greater than, less than, more than and the like are understood as not including the number, and above, below, within and the like are understood as including the number. If the terms "first", "second", "third" are described, they are only for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0035] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "link", "connection", "arrangement" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements.For ordinary skilled in the art, the above-mentioned terms can be understood according to the specific meaning of the utility model in the specific circumstances.The embodiment is described below according to the overall structure of the utility model.

[0036] As Figures 1-5 The utility model discloses a kind of sectorial pressure response self-lubricating bridge swivel ball hinge, including lower ball hinge 1, upper ball hinge 2, oil nozzle 4, oil supply mechanism 5, pressure sensor and control module 6, wherein lower ball hinge 1 includes concave spherical surface 11, slide plate 12 and lower shaft sleeve 13, concave spherical surface 11 is divided into multiple sectors, slide plate 12 is laid on concave spherical surface 11, lower shaft sleeve 13 is located at the bottom center of concave spherical surface 11, upper end is communicated with concave spherical surface 11, lower end is equipped with oil return port 131, upper ball hinge 2 is horizontally rotatably arranged on lower ball hinge 1, and is rotatably connected with lower shaft sleeve 13 by pivot 3, multiple oil nozzles 4 are evenly distributed in each sector, and the oil nozzle 4 in each sector is connected with oil supply mechanism 5 by same oil delivery pipe, oil return port 131 is connected with oil supply mechanism 5 by oil delivery pipe, pressure sensor is used to collect the pressure data of each sector respectively, and control module 6 is electrically connected with oil supply mechanism 5, pressure sensor respectively.It can be understood that, before bridge swivel construction, oil supply mechanism 5 is injected into lubricating oil between lower ball hinge 1 and upper ball hinge 2 by oil delivery pipe and oil nozzle 4, can form lubricating oil film on concave spherical surface 11, when unstable phenomenon appears in bridge swivel construction process, pressure sensor can upload the real-time pressure data of each sector on concave spherical surface 11 to control module 6, control module 6 controls oil supply mechanism 5 to increase oil supply to the sector with pressure greater than threshold value, reduces oil supply or stops oil supply to the sector with pressure less than threshold value, can realize sectorial detection pressure and automatically replenish lubricating oil, to reduce bridge swivel frictional resistance, reduce lubricating cost.

[0037] It is worth mentioning that the lower ball hinge 1, the upper ball hinge 2 and the rotation shaft 3 in the embodiment are arranged around the central rotation shaft, the rotation shaft 3 is rotationally connected with the upper shaft sleeve 22 and the lower shaft sleeve 13, the lower ball hinge 1 is slidingly connected with the upper ball hinge 2, and the two together form a composite motion system to meet the multi-degree-of-freedom requirement of the bridge rotation. The pressure sensor is preferably a piezoresistive sensor, which has high sensitivity and anti-interference capability, can accurately capture the small pressure changes of each sector during the bridge rotation, and is suitable for stable operation in an oil lubrication environment. Each sector is provided with at least three pressure sensors, which can be directly embedded and installed on the upper surface or the lower surface of the sliding plate and arranged at different positions of the sector from inside to outside, so as to avoid the monitoring blind area.

[0038] As shown in Figure 2 , the lower ball hinge 1 in the embodiment further comprises a compression ring 14, and the concave spherical surface 11 is spaced apart from inside to outside and provided with a sliding plate 12, and the inner and outer edges of the sliding plate 12 are fixedly connected with the concave spherical surface 11 through the compression ring 14. Referring to Figure 5 , the inner and outer edges of the sliding plate 12 are respectively provided with a stepped structure 121, and the compression ring 14 is embeddedly arranged in the stepped structure 121, and the upper surface is lower than the upper surface of the sliding plate 12, so as to avoid friction between the compression ring 14 and the upper ball hinge 2. The thickness of the sliding plate 12 is greater than the thickness of the compression ring 14, and the compression ring 14 can be fixedly connected with the concave spherical surface 11 through a countersunk bolt.

[0039] Further, the oil injection nozzle 4 is embeddedly arranged on the sliding plate 12, the upper end is lower than the upper surface of the sliding plate 12, the lower end penetrates the sliding plate 12 and the concave spherical surface 11 and is connected with the oil delivery pipe, and the oil delivery pipe is preferably a high-pressure resistant oil pipe. In addition, the oil supply mechanism 5 comprises an oil pump and an electromagnetic valve, the oil pump is connected with the oil delivery pipe of each sector through the electromagnetic valve, and the oil pump and the electromagnetic valve are electrically connected with the control module 6, so that the control module 6 can control the oil supply state of each sector through the electromagnetic valve. Referring to Figure 3 , the concave spherical surface 11 in the embodiment is equally divided into eight sectors, and each left and right sector is provided with an oil pump for oil supply, which is beneficial to the differential control of the oil supply rate of different sectors by the control module 6.

[0040] Referring to Figure 2, the lower ball hinge 1 further comprises a lower annular plate 15 and a lower rib plate 16, the lower surface of the concave spherical surface 11 is provided with the lower annular plate 15 at intervals from inside to outside, and the lower rib plate 16 is arranged in an array around the circumference of the lower surface of the concave spherical surface 11, one end of the lower rib plate 16 is connected with the lower shaft sleeve 13, and the other end extends to the circumference of the lower ball hinge 1 and is connected with the lower annular plate 15 in cross, so that the structural stability of the lower ball hinge 1 can be improved. Further, the lower ball hinge 1 further comprises a supporting plate 17, the supporting plate 17 is arranged in an array around the outside of the lower shaft sleeve 13, one end of the supporting plate 17 is connected with the lower rib plate 16, and the other end is connected with the lower part of the lower shaft sleeve 13, and in the embodiment, four supporting plates are arranged on the outside of the lower shaft sleeve 13, so that the lower shaft sleeve 13 can be stably supported. In the embodiment, the supporting framework 7 is further provided, the lower ball hinge 1 is arranged on the supporting framework 7, the lower rib plate 16 is connected with the supporting framework 7 through a fastening bolt, and the supporting framework 7 is mainly arranged below the circumference of the lower ball hinge 1 and has a space inside, so that the bottom end of the lower shaft sleeve 13 can extend into the supporting framework 7.

[0041] With reference to the foregoing Figure 1 The upper ball hinge 2 comprises a convex spherical surface 21 and an upper shaft sleeve 22, the convex spherical surface 21 is matched with the concave spherical surface 11 and is connected with the upper surface of the sliding plate 12 in sliding mode, the upper shaft sleeve 22 is arranged at the bottom center of the convex spherical surface 21, the upper end of the upper shaft sleeve 22 is provided in a closed structure, the lower end of the upper shaft sleeve 22 is connected with the convex spherical surface 21 in communication, the upper end of the rotating shaft 3 is rotatably arranged in the upper shaft sleeve 22, and the lower end of the rotating shaft 3 is rotatably arranged in the lower shaft sleeve 13. Specifically, the upper end of the rotating shaft 3 is provided with a lifting ring, so that the rotating shaft 3 can be hoisted into the lower shaft sleeve 13, and gaps are respectively left between the rotating shaft 3 and the side wall of the lower shaft sleeve 13 and between the bottom end of the rotating shaft 3 and the oil return port 131, so that the backflow of lubricating oil into the oil supply mechanism 5 is not affected. Further, the upper ball hinge 2 further comprises an upper annular plate 23 and an upper rib plate 24, the upper surface of the convex spherical surface 21 is provided with the upper annular plate 23 at intervals from inside to outside, and the upper rib plate 24 is arranged in an array around the circumference of the upper surface of the convex spherical surface 21, one end of the upper rib plate 24 is connected with the upper shaft sleeve 22, and the other end extends to the circumference of the upper ball hinge 2 and is connected with the upper annular plate 23 in cross, so that the structural stability of the upper ball hinge 2 can be improved.

[0042] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to be limiting as to the scope of the present application. Numerous variations and modifications will become apparent to those skilled in the art once the above disclosure is fully appreciated. It is intended that the scope of the present application encompass all such variations and modifications as can come within the scope of the present application as defined by the appended claims and their equivalents. The exemplary embodiments are chosen and described in order to explain the principles of the present application and its practical application and to thereby enable others skilled in the art to best utilize the present application, various embodiments and various modifications being contemplated. It is intended that the scope of the present application encompass all such variations and modifications as can come within the scope of the claims and their equivalents.

Claims

1. A sectorized pressure responsive self-lubricating bridge swivel spherical hinge, characterized in that, The utility model relates to a kind of ball hinge and its supporting structure, including: Lower ball hinge, including concave spherical surface, slide plate and lower shaft sleeve, the concave spherical surface is divided into multiple sectors, the slide plate is laid on the concave spherical surface, the lower shaft sleeve is located at the bottom center of the concave spherical surface, upper end is communicated with the concave spherical surface, lower end is equipped with oil return port; Upper ball hinge, rotatably arranged on the lower ball hinge, and rotatably connected with the lower shaft sleeve through a rotating shaft; Oil nozzle, a plurality of oil nozzles are uniformly distributed in each sector; Oil supply mechanism, the oil nozzle in each sector is connected with the oil supply mechanism through a same oil pipe, and the oil return port is connected with the oil supply mechanism through an oil pipe; Pressure sensor, for collecting pressure data of each sector respectively; Control module, electrically connected with the oil supply mechanism and the pressure sensor respectively.

2. A sector-divided pressure-sensitive self-lubricating spherical hinge for bridge pier rotation according to claim 1, characterized in that, The lower ball hinge further includes a compression ring, the concave spherical surface is spaced apart from the inside to the outside and provided with the slide plate, and the inner and outer edges of the slide plate are fixedly connected with the concave spherical surface through the compression ring respectively.

3. A sector-divided pressure-sensitive self-lubricating spherical hinge for bridge pier rotation according to claim 2, characterized in that, The inner and outer edges of the slide plate are respectively provided with a stepped structure, the compression ring is embedded in the stepped structure, the upper surface of the compression ring is lower than the upper surface of the slide plate, and the thickness of the slide plate is greater than the thickness of the compression ring.

4. A sector-divided pressure-sensitive self-lubricating spherical hinge for bridge pier rotation according to claim 3, characterized in that, The oil nozzle is embedded in the slide plate, the upper end of the oil nozzle is lower than the upper surface of the slide plate, and the lower end of the oil nozzle penetrates the slide plate and the concave spherical surface to be connected with the oil pipe.

5. A sector-divided pressure-sensitive self-lubricating spherical hinge for bridge pier rotation according to claim 1, wherein The lower ball hinge further includes a lower annular plate and a lower rib plate, the lower surface of the concave spherical surface is spaced apart from the inside to the outside and provided with the lower annular plate, and the lower rib plate is circumferentially arrayed on the lower surface of the concave spherical surface, one end of the lower rib plate is connected with the lower shaft sleeve, and the other end of the lower rib plate extends to the circumference of the lower ball hinge and is cross-connected with the lower annular plate.

6. A sector-divided pressure-sensitive self-lubricating spherical hinge for bridge pier rotation according to claim 5, wherein The lower ball hinge further includes a supporting plate, the supporting plate is circumferentially arrayed on the outside of the lower shaft sleeve, one end of the supporting plate is connected with the lower rib plate, and the other end of the supporting plate is connected with the lower part of the lower shaft sleeve.

7. A sector-divided pressure-sensitive self-lubricating spherical hinge for bridge pier rotation according to claim 6, characterized in that, The lower ball hinge is arranged on the supporting framework, the lower rib plate is connected with the supporting framework through a fastening bolt, and the bottom end of the lower shaft sleeve extends into the supporting framework.

8. A sector-divided pressure-sensitive self-lubricating spherical hinge for bridge pier rotation according to claim 1, wherein The upper ball hinge includes a convex spherical surface and an upper shaft sleeve, the convex spherical surface is matched with the concave spherical surface and is slidably connected with the upper surface of the slide plate, the upper shaft sleeve is arranged at the bottom center of the convex spherical surface, the upper end of the upper shaft sleeve is provided as a closed structure, the lower end of the upper shaft sleeve is communicated with the convex spherical surface, the upper end of the rotating shaft is rotatably arranged in the upper shaft sleeve, and the lower end of the rotating shaft is rotatably arranged in the lower shaft sleeve.

9. A sector-divided pressure-sensitive self-lubricating spherical hinge for bridge pier rotation according to claim 8, wherein The upper ball hinge further includes an upper annular plate and an upper rib plate, the upper surface of the convex spherical surface is spaced apart from the inside to the outside and provided with the upper annular plate, and the upper rib plate is circumferentially arrayed on the upper surface of the convex spherical surface, one end of the upper rib plate is connected with the upper shaft sleeve, and the other end of the upper rib plate extends to the circumference of the upper ball hinge and is cross-connected with the upper annular plate.

10. A sector-divided pressure-sensitive self-lubricating spherical hinge for bridge pier rotation according to claim 1, wherein The oil supply mechanism includes an oil pump and an electromagnetic valve, the oil pump is connected with the oil pipe of each sector through the electromagnetic valve respectively, and the oil pump and the electromagnetic valve are electrically connected with the control module respectively.

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