Spherical hinge swivel support capable of realizing stable rotation

Abstract

The invention relates to the field of bridge swivel, in particular to a spherical hinge swivel support capable of realizing stable rotation, which comprises a lower spherical hinge rotationally arranged on an upper spherical hinge, the lower spherical hinge is arranged on a mounting frame, the mounting frame is arranged at the center of an annular slide way, and a plurality of rectangular grooves are formed in the concave surface of the lower spherical hinge along the axis direction of the lower spherical hinge; a sliding assembly is arranged in each rectangular groove; each sliding assembly comprises a sliding column and a U-shaped plate. The U-shaped plates are arranged in the corresponding rectangular grooves, semicircular notches are formed in the inner walls of the two sides of each U-shaped plate, rotating shafts are arranged at the two ends of each sliding column, the rotating shafts can be rotationally arranged in the corresponding semicircular notches, and the sliding columns are located in the corresponding U-shaped plates. The rotating stability of the upper spherical hinge can be ensured through the multiple sliding columns, the abrasion degrees of the sliding columns are the same in the rotating process, so that the upper spherical hinge can be prevented from toppling over, the sliding columns can continuously make contact with lubricating liquid, and therefore the friction force of the sliding columns is further reduced.

Description

Technical Field

[0001] The present application relates to the field of bridge swivels, and in particular to a ball-jointed swivel support capable of achieving smooth rotation. Background Art

[0002] A rotating bridge is a bridge constructed using the rotation method. Bridge rotation construction refers to a construction method in which the bridge structure is manufactured (cast or spliced) at a non-design axis position and then rotated into place. It can convert operations above obstacles into operations on shore or near the ground. It is mainly used in situations where support is not available, such as crossing canyons, rivers, railways, and highways. The rotation system of a rotating bridge is constructed with a ball-jointed rotating support and the traction cable is pulled by a jack to form a rotational force to achieve rotation.

[0003] In the prior art, a plurality of Teflon sliders are placed between the upper and lower ball joints to reduce the friction during the rotation of the upper and lower ball joints; however, due to the heavy weight of the bridge and its extension at both ends, the weight distribution on the upper ball joint is uneven, which in turn causes different pressures on the Teflon sliders from the upper ball joint, resulting in different degrees of wear on the Teflon sliders arranged between the upper and lower ball joints, which may make the rotation process not smooth, thereby affecting the stability of the bridge rotation and causing the failure of the bridge rotation construction. Summary of the invention

[0004] The main purpose of the present application is to provide a ball joint swivel support that can achieve smooth rotation. Through the cooperation of the sliding column and the upper ball joint, the outer wall of the sliding column can be evenly contacted with the upper ball joint, thereby ensuring the stability of the upper ball joint rotation, and through the continuous input of lubricating fluid, the friction is further reduced and the smoothness of the upper ball joint is improved.

[0005] To achieve the above-mentioned purpose, the present application provides a ball-joint swivel support that can realize smooth rotation, including an annular slide, a lower ball joint, an upper ball joint and a sliding assembly; the annular slide is arranged in a horizontal state, and a plurality of support legs connected to the bridge piers are arranged on the annular slide for sliding along its axis, a mounting frame is arranged at the center of the annular slide, the lower ball joint is arranged in a horizontal state at the center of the mounting frame, a pin hole is arranged at the center of the upper ball joint, a pin shaft is arranged at the center of the lower ball joint, the pin shaft is inserted into the corresponding pin hole, and the upper ball joint is coaxially rotatably arranged on the lower ball joint; a plurality of rectangular grooves are arranged on the concave surface of the lower ball joint along its axial direction, and a sliding assembly for relative rotation of the upper ball joint and the lower ball joint is arranged in each rectangular groove; each group of sliding assemblies includes a sliding column and a U-shaped plate; the U-shaped plate is arranged in the corresponding rectangular groove, and semicircular notches are arranged on the inner walls of both sides of the U-shaped plate, and rotating shafts are arranged at both ends of the sliding column, and the rotating shafts are rotatably arranged in the corresponding semicircular notches, and the sliding column is located inside the corresponding U-shaped plate.

[0006] Preferably, a plurality of annular grooves are provided on the lower ball joint, and the plurality of annular grooves are opened in a ring shape with the center of the lower ball joint as the point, and the diameters of the plurality of annular grooves increase successively, and the annular grooves are connected with the corresponding rectangular grooves; a liquid inlet channel connected to the outermost annular groove is provided on the annular side surface of the lower ball joint, an annular collecting groove is provided at the center of the lower ball joint, and a liquid discharge channel connected to the annular collecting groove is provided on the annular side surface of the lower ball joint.

[0007] Preferably, a synchronization disk is provided at one end of each rotating shaft away from the sliding column, an annular rubber sleeve is provided on the outer wall of each synchronization disk, a plurality of partition bars are provided inside the annular rubber sleeve along its axial direction, the plurality of partition bars divide the inside of the annular rubber sleeve into a plurality of independent spaces, and a plurality of through holes are provided on the side of each annular rubber sleeve close to the corresponding sliding column along its axial direction, and a door core film is provided in each through hole.

[0008] Preferably, two annular limiting strips are provided in a mirror-like manner on the annular side surface of the synchronization disk.

[0009] Preferably, a sealing ring is provided between the upper ball joint and the lower ball joint, and an annular limiting plate is provided on the inner wall of the sealing ring.

[0010] Preferably, each support leg is provided with a dust removal component for pushing dust and impurities on the annular slideway.

[0011] Preferably, each group of dust removal components includes a mounting bar and a scraping bar; the mounting bar is arranged at one end of the corresponding support foot along the length direction, and a scraping bar is arranged on a side of each mounting bar away from the support foot.

[0012] Preferably, each mounting bar is provided with a strip groove, in which butter polytetrafluoroethylene powder is provided, and a discharge groove connected to the strip groove is provided on the outer wall of each mounting bar away from the scraper bar, and a counterweight plate is provided in each strip groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In this application, through the cooperation between the lower ball joint and the sliding column, when the upper ball joint rotates, the sliding column can rotate along with the rotation of the upper ball joint, thereby ensuring that the degree of wear of the sliding column is the same and avoiding displacement during the rotation of the bridge.

[0014] 2. The present application uses the cooperation of the annular groove and the sliding column to enable the sliding column to continuously contact the lubricating liquid during the rotation process, which can further reduce the friction between the sliding column and the upper ball joint, and through the cooperation of the liquid inlet channel and the liquid discharge channel, the lubricating liquid can be kept in a circulating state to discharge the worn powder on the sliding column; the lubricating liquid overflowing from the rectangular groove can also contact the surface of the upper ball joint, thereby continuously lubricating the upper ball joint.

[0015] 3. Through the cooperation of the annular rubber sleeve and the partition strip, the present application can intermittently squeeze the lubricating liquid out of the through hole and spray the contact position between the sliding column and the upper ball joint as the sliding column rotates. This can not only reduce the friction between the upper ball joint and the sliding column, but also flush away the powder debris remaining on the upper ball joint, thereby improving the smoothness of the rotation of the upper ball joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings: Figure 1 is a stereogram of the present invention; Figure 2 The local stereo decomposition of the present invention Figure 1 ; Figure 3 yes Figure 2 A partial enlarged view of the middle part; Figure 4 is a partial top view of the present invention; Figure 5 yes Figure 4 Plane section view along BB direction; Figure 6 yes Figure 5 A partial enlarged view of point C in the middle; Figure 7 is a front view of the sliding assembly of the present invention; Figure 8 yes Figure 7 Plane section view along DD direction; Fig. 9 The local stereo decomposition of the present invention Figure 2 ; Fig.10 It is the local stereoscopic Figure 1 ; Fig.11 It is the local stereoscopic Figure 2 .

[0017] The numbers in the above figure are: 1-annular slide; 11-supporting foot; 12-mounting frame; 2-lower ball joint; 21-pin shaft; 22-rectangular groove; 23-annular groove; 24-liquid inlet channel; 25-annular collecting groove; 26-liquid discharge channel; 3-upper ball joint; 31-pin hole; 32-sealing ring; 33-annular limiting plate; 4-sliding assembly; 41-sliding column; 411-rotating shaft; 412-synchronizing disk; 4121-annular limiting strip; 413-annular rubber sleeve; 414-partitioning strip; 415-through hole; 42-U-shaped plate; 421-semicircular notch; 5-ash removal assembly; 51-mounting bar; 511-bar groove; 512-discharge chute; 513-counterweight plate; 52-scraping bar; DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0019] See also Figures 1 to 11 As shown, a ball joint swivel support capable of realizing smooth rotation comprises an annular slide 1, a lower ball joint 2, an upper ball joint 3 and a sliding assembly 4; the annular slide 1 is arranged in a horizontal state, a plurality of legs 11 connected to the bridge pier are arranged on the annular slide 1 along its axis for sliding movement, a mounting frame 12 is arranged at the center of the annular slide 1, the lower ball joint 2 is arranged in a horizontal state at the center of the mounting frame 12, a pin hole 31 is arranged at the center of the upper ball joint 3, a pin shaft 21 is arranged at the center of the lower ball joint 2, the pin shaft 21 is inserted into the corresponding pin hole 31, and the upper ball joint 3 is arranged on the lower ball joint 2 for coaxial rotation. The concave surface of the upper and lower ball joints 2 is provided with a plurality of rectangular grooves 22 along its axial direction, and a sliding assembly 4 for relative rotation of the upper ball joint 3 and the lower ball joint 2 is provided in each rectangular groove 22; each group of sliding assemblies 4 includes a sliding column 41 and a U-shaped plate 42; the U-shaped plate 42 is arranged in the corresponding rectangular groove 22, and semicircular notches 421 are arranged on the inner walls on both sides of the U-shaped plate 42, and rotating shafts 411 are arranged at both ends of the sliding column 41, and the rotating shaft 411 can be rotatably arranged in the corresponding semicircular notches 421, and the sliding column 41 is located inside the corresponding U-shaped plate 42.

[0020] The staff uses a level to level the annular slide 1 and the mounting frame 12, and then uses a template to cast the mounting frame 12 and the pedestal as a whole to ensure its stability. Then, the lower ball joint 2 is placed in a horizontal state and can be detachably placed on the mounting frame 12. Then, the U-shaped plate 42 is installed in the rectangular groove 22 of the concave surface of the lower ball joint 2 and the sliding column 41 is placed in the corresponding U-shaped plate 42 in turn, thereby completing the installation of the sliding assembly 4. At this time, the outer wall of the sliding column 41 should be higher than the surface of the lower ball joint 2 (and the sliding column 41 can preferentially contact the surface of the lower ball joint 2 and the upper ball joint 3). Then, the upper ball joint 3 is installed through the pin shaft 21, so that the upper ball joint 3 is rotatably set on the lower ball joint 2. At this time, the surface of the upper ball joint 3 is in conflict with the surface of the sliding column 41 set in the rectangular groove 22. The upper ball joint 3 and the support foot 11 are fixed to the pier through multiple anchor bolts to ensure the stability of their connection. When the bridge construction is completed, the upper The ball joint 3 rotates, and the upper ball joint 3 is in "linear contact" with the surfaces of multiple sliding columns 41 under the action of the gravity of the bridge. During this process, the sliding columns 41 can roll accordingly with the rotation of the upper ball joint 3, thereby reducing the friction between the upper ball joint 3 and the lower ball joint 2, and making the relative rotation between the upper ball joint 3 and the lower ball joint 2 smoother. Secondly, the sliding column 41 is made of polytetrafluoroethylene material, which can further reduce the friction between the upper ball joint 3 and the sliding column 41; and because the bridge itself is heavy, the sliding column 41 will be worn, and the powder debris generated by the friction can fall under the action of gravity to avoid its accumulation on the surface of the sliding column 41; and the rotating sliding column 41 can make the outer wall of the sliding column 41 wear to the same degree, avoiding the deviation of the bridge. Furthermore, multiple support legs 11 are slidably arranged on the annular slide 1, so as to provide secondary support for the bridge and ensure the overall stability.

[0021] The annular slide 1 is formed by multiple arc-shaped skeletons; when the bridge is rotated to the corresponding position, the bridge is lifted up by multiple jacks, and all the swivel support components except the mounting frame 12 can be taken out for reuse. After being taken out, the bridge is supported by permanent supports and concrete is poured to fix the bridge, thereby completing the entire bridge rotation operation.

[0022] See also Figures 2 to 5 As shown, a plurality of annular grooves 23 are provided on the lower ball joint 2, and the plurality of annular grooves 23 are opened in an annular shape with the center of the lower ball joint 2 as the point, and the diameters of the plurality of annular grooves 23 increase successively, and the annular grooves 23 are connected with the corresponding rectangular grooves 22; a liquid inlet channel 24 connected to the outermost annular grooves 23 is provided on the annular side surface of the lower ball joint 2, an annular collecting groove 25 is provided at the center of the lower ball joint 2, and a liquid discharge channel 26 connected to the annular collecting groove 25 is provided on the annular side surface of the lower ball joint 2.

[0023] By providing a liquid inlet channel 24, the lubricating liquid is transported into the liquid inlet channel 24 through an external liquid supply mechanism (not shown in the figure), and the lubricating liquid enters the outermost annular groove 23 and flows along the trajectory of the annular groove 23. Since the rectangular groove 22 is connected with the corresponding annular groove 23, the lubricating liquid enters the corresponding rectangular groove 22, so that the sliding column 41 can contact with the lubricating liquid in the rectangular groove 22 during the rotation process, which can not only wash off the debris adhering to it, but also enable the lubricating liquid to continuously lubricate the surface of the sliding column 41, further reducing the friction between the upper ball joint 3 and the sliding column 41, and with the continuous transportation of the lubricating liquid, when the lubricating liquid in the rectangular groove 22 After reaching a certain amount, the lubricating liquid can overflow the rectangular groove 22 and enter the corresponding annular groove 23 in turn, thereby wetting the multiple sliding columns 41, and the flowing lubricating liquid can contact the surface of the lower ball joint 2, thereby further lubricating the upper ball joint 3 and flushing off the powder debris adhered to the surface of the upper ball joint 3, ensuring the stability of the rotation of the upper ball joint 3. When the lubricating liquid flows to the annular collecting groove 25 closest to the center of the lower ball joint 2, it is discharged from the lower ball joint 2 through the drainage channel 26, which not only can continuously discharge the powder debris generated by the sliding column 41, but also can reuse the lubricating liquid, so that the lubricating liquid in the lower ball joint 2 remains in a flowing state, thereby improving the smoothness of the rotation of the upper ball joint 3.

[0024] See also Figures 7 to 9 As shown, a synchronization disk 412 is provided at one end of each rotating shaft 411 away from the sliding column 41, and an annular rubber sleeve 413 is provided on the outer wall of each synchronization disk 412. A plurality of partition bars 414 are provided inside the annular rubber sleeve 413 along its axial direction. The plurality of partition bars 414 divide the inside of the annular rubber sleeve 413 into a plurality of independent spaces. A plurality of through holes 415 are provided on one side of each annular rubber sleeve 413 close to the corresponding sliding column 41 along its axial direction, and a door core film is provided in each through hole 415.

[0025] When the upper ball joint 3 and the lower ball joint 2 are installed, the upper ball joint 3 squeezes the annular rubber sleeve 413 on the outer wall of the synchronization disk 412; when the bridge needs to be rotated, as the upper ball joint 3 rotates, the sliding column 41 can rotate, and the multiple partition strips 414 divide the inside of the annular rubber sleeve 413 into multiple independent spaces, so that the upper ball joint 3 can gradually squeeze the annular rubber sleeve 413 arranged on the outer wall of the synchronization disk 412, so that the gas located in the annular rubber sleeve 413 can be ejected through the through hole 415, and the door core film has the same principle as the bicycle valve core. When the upper ball joint 3 does not squeeze the annular rubber sleeve 413, the door core film is gathered together without force and is in a closed state. After being subjected to external force, the film is forced to open outward to form a channel, thereby spraying the gas in the annular rubber sleeve 413 to the contact position between the sliding column 41 and the upper ball joint 3, thereby further removing the powder debris; further, when the lubricating liquid enters the rectangular groove 22, as the sliding column 41 rotates, the annular rubber sleeve 413 of each sliding column 41 close to the center of the lower ball joint 2 can be squeezed when it is close to the bottom inner wall of the rectangular groove 22, so that the door core film is in an open state. At this time, the lubricating liquid can enter the independent space inside the annular rubber sleeve 413 through the through hole 415. Subsequently, when the annular rubber sleeve 413 moves to the upper ball joint 3, it can be squeezed, so that the lubricating liquid in the independent space can be sprayed out together with the squeezed gas, further lubricating the contact position between the sliding column 41 and the upper ball joint 3, thereby preventing the powder debris from affecting the rotation of the upper ball joint 3.

[0026] See also Figure 7 and Fig. 9 As shown, two annular limiting strips 4121 are provided in an annular side mirror image of the synchronization disk 412 .

[0027] By providing two annular limiting strips 4121, not only can the annular rubber sleeve 413 be limited to ensure that the upper ball joint 3 can accurately contact the annular rubber sleeve 413, but also the upper ball joint 3 can be prevented from excessively squeezing the annular rubber sleeve 413, causing the annular rubber sleeve 413 to detach.

[0028] See also Figures 5 and 6 As shown, a sealing ring 32 is provided between the upper ball joint 3 and the lower ball joint 2 , and an annular limiting plate 33 is provided on the inner wall of the sealing ring 32 .

[0029] By providing a sealing ring 32, dust and impurities can be prevented from entering between the upper ball joint 3 and the lower ball joint 2 during the construction of the bridge body. Since the pin shaft 21 and the upper ball joint 3 are clearance-fitted, in order to prevent the upper ball joint 3 from being offset during rotation, an annular limit plate 33 is provided on the inner wall of the sealing ring 32. The annular limit plate 33 is also made of polytetrafluoroethylene material, so that the upper ball joint 3 and the lower ball joint 2 can be further limited to prevent the upper ball joint 3 from being offset during operation.

[0030] See also Figure 1 , Fig.10 and Fig.11 As shown, each support leg 11 is provided with a dust removal component 5 for pushing dust and impurities on the annular slide 1; each group of dust removal components 5 includes a mounting bar 51 and a scraper bar 52; the mounting bar 51 is arranged at one end of the corresponding support leg 11 along the length direction, and a scraper bar 52 is arranged on the side of each mounting bar 51 away from the support leg 11.

[0031] Since the annular slide 1 is in an exposed state, dust and impurities will fall onto the annular slide 1 during the pouring of the bridge, thereby affecting the rotation of the bridge; therefore, by providing a mounting bar 51, when the bridge rotates, the scraper bar 52 provided on the mounting bar 51 can push the dust and impurities on the annular slide 1, and the mounting bar 51 is inclined at a certain angle to the support leg 11, so that the pushed garbage and impurities can move along the length direction of the mounting bar 51 toward a direction away from the mounting frame 12, thereby preventing the garbage and impurities from affecting the movement of the support leg 11.

[0032] See also Fig.10 and Fig.11 As shown, each mounting strip 51 is provided with a strip groove 511 , in which butter polytetrafluoroethylene powder is provided, and a discharge groove 512 connected to the strip groove 511 is provided on the outer wall of one side of each mounting strip 51 away from the scraper strip 52 , and a counterweight plate 513 is provided in each strip groove 511 .

[0033] In order to further improve the smoothness of the movement of the support leg 11, butter polytetrafluoroethylene powder is placed in the strip groove 511. When the support leg 11 rotates, the butter polytetrafluoroethylene powder can continuously lubricate the annular slide 1 under the action of gravity of the counterweight plate 513, thereby ensuring the smoothness of the movement of the support leg 11.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ball joint swivel support capable of achieving smooth rotation, characterized in that: It includes an annular slide, a lower ball joint, an upper ball joint and a sliding assembly; The annular slide is arranged in a horizontal state, and a plurality of legs connected to the bridge piers are arranged on the annular slide for sliding along its axis, a mounting frame is arranged at the center of the annular slide, a lower ball joint is arranged in a horizontal state at the center of the mounting frame, a pin hole is arranged at the center of the upper ball joint, a pin shaft is arranged at the center of the lower ball joint, the pin shaft is inserted into the corresponding pin hole, and the upper ball joint is arranged on the lower ball joint for coaxial rotation; The concave surface of the lower ball joint is provided with a plurality of rectangular grooves along its axis direction, and a sliding assembly for relative rotation of the upper ball joint and the lower ball joint is provided in each rectangular groove; each set of sliding assemblies includes a sliding column and a U-shaped plate; The U-shaped plate is arranged in the corresponding rectangular groove, the inner walls on both sides of the U-shaped plate are provided with semicircular notches, the two ends of the sliding column are provided with rotating shafts, the rotating shafts are rotatably arranged in the corresponding semicircular notches, and the sliding column is located inside the corresponding U-shaped plate.

2. A ball joint swivel support capable of achieving smooth rotation according to claim 1, characterized in that: The lower ball joint is provided with a plurality of annular grooves, which are opened in a ring shape with the center of the lower ball joint as the point, and the diameters of the plurality of annular grooves increase successively, and the annular grooves are connected with the corresponding rectangular grooves; a liquid inlet channel connected to the outermost annular groove is provided on the annular side surface of the lower ball joint, an annular collecting groove is provided at the center of the lower ball joint, and a liquid discharge channel connected to the annular collecting groove is provided on the annular side surface of the lower ball joint.

3. A ball joint swivel support capable of achieving smooth rotation according to claim 1, characterized in that: A synchronous disk is provided at one end of each rotating shaft away from the sliding column, an annular rubber sleeve is provided on the outer wall of each synchronous disk, a plurality of partition bars are provided inside the annular rubber sleeve along its axial direction, the plurality of partition bars divide the inside of the annular rubber sleeve into a plurality of independent spaces, a plurality of through holes are provided on the side of each annular rubber sleeve close to the corresponding sliding column along its axial direction, a door core film is provided in each through hole.

4. A ball joint swivel support capable of achieving smooth rotation according to claim 3, characterized in that: Two annular limiting strips are arranged in a mirror-like manner on the annular side of the synchronous disk.

5. The ball joint swivel support capable of achieving smooth rotation according to claim 1, characterized in that: A sealing ring is arranged between the upper ball joint and the lower ball joint, and an annular limiting plate is arranged on the inner wall of the sealing ring.

6. A ball joint swivel support capable of achieving smooth rotation according to claim 1, characterized in that: Each support leg is provided with a dust removal component for pushing away dust and impurities on the annular slideway.

7. A ball joint swivel support capable of achieving smooth rotation according to claim 6, characterized in that: Each dust removal assembly includes a mounting strip and a scraper strip; The mounting strip is arranged at one end of the corresponding support leg along the length direction, and a scraping strip is arranged on one side of each mounting strip away from the support leg.

8. A ball joint swivel support capable of achieving smooth rotation according to claim 7, characterized in that: Each mounting bar is provided with a strip groove, in which butter polytetrafluoroethylene powder is provided, and a discharge groove connected to the strip groove is provided on the outer wall of one side of each mounting bar away from the scraping bar, and a counterweight plate is provided in each strip groove.

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