Ball hinge positioning structure and construction method thereof for large-tonnage swivel bridge

Abstract

A ball hinge positioning structure for a large-tonnage swivel bridge comprising a lower turntable 2, wherein a spherical swivel 5 protrudes from the centre of the bottom of the lower turntable; a supp

Description

Technical Field

[0001] The present application relates to the field of swivel bridges, and in particular to a ball hinge positioning structure and a construction method thereof for a large-tonnage swivel bridge. Background Art

[0002] The swivel bridge is a bridge constructed by the swivel method. The swivel construction of the bridge refers to a construction method of making (pouring or splicing) the bridge structure at the position of the non-design axis and then putting the bridge structure in place by the swivel, which can transform the operation above the obstacle into the operation on the shore or near the ground. It is mainly applied to the case that the upper span canyons, rivers, railways and highways that cannot provide support. The swivel system of the swivel bridge is composed of a lower turntable, a pin shaft, an upper turntable and a traction system. In the swivel process, the traction cable is pulled by the jack to form the rotation couple to realize the swivel.

[0003] In the related art, when constructing a swivel system, a large-sized circular support frame is manufactured according to the entire area of a lower turntable to serve as a main support structure of the lower turntable, and then jacks are arranged on the support frame to level the edge bottom of the lower turntable to ensure that the levelness of the lower turntable meets a standard. Later, the lower turntable is locked, and templates are laid and steel bars are bound on the outer periphery of the support frame. The grouting is performed to form a concrete support together with the lower turntable, and then a pin shaft is inserted at the axial position of the lower turntable to serve as a rotating shaft of the upper turntable. The upper turntable is a supporting bottom structure to drive the bridge body to rotate. The purpose of the bridge body to rotate is achieved by using horizontal jacks or traction cables to pull.

[0004] With respect to the related art mentioned above, there are the following drawbacks. With the large-scale support frame as the support structure of the lower turntable, a large number of steel materials are required to be prepared according to the design size to be assembled on site, and the assembly of the support frame on site requires the cooperation of a number of construction personnel. After the assembly of the support frame, the jacks are needed for the jacking and leveling of the lower turntable. The installation and average adjustment is a tedious operation, affecting the construction efficiency of the swivel system. Thus, there is still room for improvement. Summary of the Invention

[0005] In order to improve the construction efficiency of the swivel system, the present application provides a ball hinge positioning structure and a construction method thereof for a large-tonnage swivel bridge.

[0006] The ball hinge positioning structure and a construction method thereof for a large-tonnage swivel bridge provided in the present application use the following technical solutions. A ball hinge positioning structure for a large-tonnage swivel bridge includes: a lower turntable, wherein a spherical swivel protrudes from the center of the bottom of the lower turntable; a supporting pile body, wherein the supporting pile body is vertically provided and the top thereof is concavely provided with a spherical groove matching with the spherical swivel, and the spherical swivel is rotatably connected in the spherical groove; a plurality of traction assemblies, wherein the plurality of traction assemblies are distributed on the peripheral side of the supporting pile body; traction ends of the plurality of traction assemblies are all connected to a lower end face of the lower turntable, and the lower turntable is leveled by pulling downwards;

[0007] By adopting the above-mentioned technical solution, the supporting pile body replaces the large support frame to save a lot of steel and simplify the steel structure welding assembly steps, which is conducive to reduce transportation costs and labor costs. By the match of spherical swivel and the spherical groove on the supporting pile body, the lower turntable can rotate in all directions, thereby improving the flexibility of the lower turntable, facilitating to match the traction assembly to achieve the purpose of leveling, which is conducive to improve the efficiency of the swivel system construction.

[0008] The traction assembly includes a connecting ring, a mounting frame and a winch provided on the mounting frame; the connecting rings of the plurality of the traction assemblies are circumferentially distributed on the peripheral side of the supporting pile body and located below the lower turntable; the mounting frames of the plurality of the traction assemblies are circumferentially distributed on the peripheral side of the lower turntable and located outside the connecting ring; and the traction rope of the winch passes through the connecting ring and is connected to a bottom edge of the lower turntable.

[0009] By adopting the above-mentioned technical solution, the mounting frame raises the position of the winch, and the connecting ring is used to change the pulling direction of the traction rope, so that the winch can be avoided from being embedded in the concrete, and the downward direction of the traction force can also be maintained. In the process of pouring the concrete, the traction assembly maintains the pulling action on the lower turntable, which is beneficial to maintaining the stability of the lower turntable.

[0010] Preferably, the connecting ring is located directly below an edge of the lower turntable; and the traction rope of the winch extends vertically upwards and is fixed to the bottom edge of the lower turntable after passing through the connecting ring.

[0011] By adopting the above-mentioned technical solution, the tractive force of the traction rope of the winch is made vertically downward, so as to draw downward and level the lower turntable.

[0012] Preferably, the plurality of mounting frames (32) are configured for supporting the template (8).

[0013] By adopting the above-mentioned technical solution, since the mounting frame is circumferentially distributed on the outer periphery of the lower turntable according to the arrangement mode of the traction assembly, the mounting frame can serve as a supporting structure of the template at the same time when the concrete is poured, which is beneficial to improving the efficiency and stability of the template erection, and further improving the construction efficiency and quality of the swivel system.

[0014] Preferably, a first connecting member is circumferentially distributed on the lower turntable; a plurality of second connecting members are circumferentially distributed on the supporting pile body; and after the lower turntable is leveled, the first connecting member is fixedly connected to the second connecting member.

[0015] By using the above-mentioned technical solution, after the lower turntable is leveled, the first connecting member of the lower turntable and the second connecting member of the supporting pile body are connected, so as to further strengthen the stability of the connection between the lower turntable and the supporting pile body, and improve the overall stability of the lower turntable by cooperating with the traction assembly.

[0016] Preferably, the first connecting member is a connecting steel bar; the connecting steel bar is pre-embedded in an inner ring position of the bottom of the lower turntable; and the second connecting member is a connecting rod which is pre-embedded in the outer periphery of the supporting pile body in a radial direction.

[0017] By using the above-mentioned technical solution, the connecting steel bars are embedded in the bottom of the turntable in advance, and the connecting rods are embedded in the supporting pile body in advance. After the lower turntable is mounted in place, the connecting steel bars are bound and fixed at the connecting rods, so that the connection is convenient and the installation efficiency of the lower turntable is improved.

[0018] A construction method for the ball hinge positioning structure for the large-tonnage swivel bridge includes the steps of: pouring a supporting pile body, and reserving a spherical groove at the top of the supporting pile body; mounting the lower turntable, and hanging the lower turntable on the supporting pile body, wherein the spherical swivel at the bottom of the lower turntable falls into the spherical groove at the top of the supporting pile body; mounting a traction assembly, wherein a traction rope of a winch of the traction assembly passes through a connecting ring and is connected to the lower turntable; starting a plurality of groups of winches for pulling down the lower turntable to level the lower turntable; erecting a template on the periphery of the lower turntable, and mounting the template on the inner side of mounting frames of the plurality of traction assemblies, wherein the mounting frames support the template, and then the steps of steel bar binding and concrete pouring are performed; and the lower part of the lower turntable is embedded in the concrete structure together with the supporting pile body.

[0019] By adopting the above-mentioned technical solution, the supporting pile body replaces the large support frame to save a lot of steel and simplify the steel structure welding assembly steps, which is conducive to reduce transportation costs and labor costs. By the match of spherical swivel and the spherical groove on the supporting pile body, the lower turntable can rotate in all directions, thereby improving the flexibility of the lower turntable, facilitating to match the traction assembly to achieve the purpose of leveling. The mounting frame can serve as the supporting structure of the template at the same time, which is beneficial to improving the efficiency and stability of the template erection, and thus improving the construction efficiency and quality of the swivel system.

[0020] Preferably, after the leveling of the lower turntable is finished, the pulling action of the traction assembly on the lower turntable is maintained, and then the first connecting member and the second connecting member are connected to reinforce the lower turntable.

[0021] By using the above-mentioned technical solution, the first connecting member of the lower turntable and the second connecting member of the supporting pile body are connected, so as to further strengthen the stability of the connection between the lower turntable and the supporting pile body, and improve the overall stability of the lower turntable by cooperating with the traction assembly.

[0022] In summary, the present application includes at least one of the following beneficial technical effects. 1. The supporting pile body replaces a large support frame, which can not only save a large amount of steel, but also simplify the step of welding and assembling steel structures, which is conducive to reduce transportation costs and labor costs. By the match of spherical swivel and the spherical groove on the supporting pile body, the lower turntable can rotate in all directions, thereby improving the flexibility of the lower turntable, facilitating to match the traction assembly to achieve the purpose of leveling. The mounting frame can serve as the support structure of the template at the same time, which is beneficial to improving the efficiency and stability of the template erection, and thus improving the construction efficiency and quality of the swivel system. 2. When the concrete is poured under the lower turntable, a plurality of mounting frames are used as the support members of the back of the template, which can save the material of the support members and help to improve the efficiency and stability of the template erection, thus improving the construction efficiency and quality of the swivel system. 3. After the leveling action of the lower turntable is finished, the pulling action of the traction assembly on the lower turntable is maintained. By connecting the first connecting member and the second connecting member, the connection stability between the lower turntable and the supporting pile body is further strengthened, and the overall stability of the lower turntable is improved by cooperating with the traction assembly. Brief Description of the Drawings

[0023] Fig. 1 is a schematic diagram of the overall structure of a ball hinge positioning structure for a large-tonnage swivel bridge according to an embodiment of the present application.

[0024] Fig. 2 is a schematic plan view of a ball hinge positioning structure for a large-tonnage swivel bridge according to an embodiment of the present application.

[0025] Description of reference numerals: 1, supporting pile body; 2, lower turntable; 3, traction assembly; 31, winch; 32, mounting frame; 33, connecting ring; 34, traction rope; 4, spherical groove; 5, spherical swivel; 6, first connecting member; 7, second connecting member; 8, template. Detailed Description of the Invention

[0026] The present application is described in further detail below with reference to Figs. 1 and 2.

[0027] Disclosed in an embodiment of the present application is a ball hinge positioning structure for a large-tonnage swivel bridge, and with reference to Figs. 1 and 2, the positioning structure includes a lower turntable 2, a supporting pile body 1 and a plurality of traction assemblies 3. A spherical swivel 5 is provided protruding from the center of the bottom of the lower turntable 2. The spherical swivel 5 is a concrete structure and is integrally formed with the bottom of the lower turntable 2. The supporting pile body 1 is provided vertically and the top thereof is concavely provided with a spherical groove 4 matching with the spherical swivel 5. The groove wall of the spherical groove 4 is embedded with a spherical steel plate to improve the structural strength and smoothness of the spherical groove 4. The spherical rotary body 5 is rotatably connected in the spherical groove 4, so that the lower turntable 2 can perform an all-directional rotation. In the present embodiment, a plurality of traction assemblies 3 are circumferentially distributed on the peripheral side of the supporting pile body 1, and the traction ends of the plurality of traction assemblies 3 are all connected to the lower end face of the lower turntable 2, and the leveling purpose of the lower turntable 2 is achieved as pulled downwards by the traction ends of the plurality of traction assemblies 3. The supporting pile body 1 replaces the large support frame to save a lot of steel and simplify the steel structure welding assembly steps, which is conducive to reduce transportation costs and labor costs. By the match of spherical swivel 5 and the spherical groove 4 on the supporting pile body 1, the lower turntable 2 can rotate in all directions, thereby improving the flexibility of the lower turntable 2, facilitating to match the traction assembly 3 to achieve the purpose of leveling, which is conducive to improve the efficiency of the swivel system construction.

[0028] In the present embodiment, the traction assembly 3 includes a connecting ring 33, a mounting frame 32 and a winch 31 provided on the mounting frame 32. The connecting rings 33 of a plurality of traction assemblies 3 are circumferentially distributed on the peripheral side of the supporting pile body 1 and are located directly below the edge of the lower turntable 2. The mounting frames 32 of the plurality of traction assemblies 3 are circumferentially distributed on the peripheral side of the lower turntable 2 and are located outside the connecting ring 33, and the traction rope 34 of the winch 31 extends vertically upward and is fixed to the bottom edge of the lower turntable 2 after passing through the connecting ring 33. To fix the connecting ring 33, the connecting ring 33 can be connected to the ground or buried in a concrete structure. The outer side of the connecting ring 33 refers to a side of the connecting ring 33 which is away from the center of the lower turntable 2. Specifically, the direction from the center of the lower turntable 2 to the outer periphery of the turntable 2 is from the inside to the outside. Here, the traction rope 34 is a steel wire rope. The mounting frame 32 raises the position of the winch 31, and the connecting ring 33 is used to change the pulling direction of the traction rope 34, so that the winch 31 can be avoided from being embedded in the concrete, and the downward direction of the traction force can also be maintained. In the process of pouring the concrete, the traction assembly 3 maintains the pulling action on the lower turntable 2, which is beneficial to maintaining the stability of the lower turntable 2.

[0029] In the present embodiment, the mounting frame 32 also serves as a supporting member for the template 8. When the concrete is poured under the lower turntable 2, the template 8 is mounted on the side of the mounting frame 32 facing towards the supporting pile body 1, and a plurality of mounting frames 32 support the back of the template 8, which is advantageous in improving the efficiency and stability of the template 8 erection, thereby improving the construction efficiency and quality of the swivel system. After the swivel system has been constructed, the mounting frame 32 can be disassembled and recovered.

[0030] In order to improve the stability of the lower turntable 2, a plurality of first connecting members 6 are circumferentially distributed on the lower turntable 2, and a plurality of second connecting members 7 are circumferentially distributed on the outer periphery of the supporting pile body 1. When the lower turntable 2 is leveled, the first connecting members 6 are fixedly connected to the second connecting members 7. Specifically, the first connecting member 6 is a connecting steel bar, and the connecting steel bar is pre-embedded in the inner ring position of the bottom of the lower turntable 2. The second connecting member 7 is a connecting rod, and the connecting rod is pre-embedded in the outer periphery of the supporting pile body 1 in a radial direction. One end of the connecting rod away from the supporting pile body 1 is in the shape of a hook, so as to be easily bound and fixed with the connecting steel bar.

[0031] The embodiments of the present application also disclose a construction method for the ball hinge positioning structure for the large-tonnage swivel bridge includes the steps below. The supporting pile body 1 is cast at the construction position, and the supporting pile body 1 serves as the main supporting structure of the lower turntable 2. Compared with the supporting frame structure, the supporting pile body 1 has the advantages of being not easy to deform, and does not need to transport a large amount of steel, and simplifies the welding step of the steel structure, which is beneficial to reducing the transportation cost and the labor cost.

[0032] In the construction of the supporting pile body 1, a spherical groove 4 is reserved at the top of the supporting pile body 1, and a steel plate is embedded in the inner wall of the spherical groove 4. The steel plate is adapted to the spherical groove 4, and then the surface of the steel plate is coated with a lubricating oil to improve the degree of lubrication at the inner wall of the spherical groove 4.

[0033] Then, the lower turntable 2 is installed, and the lower turntable 2 is suspended onto the supporting pile body 1 by means of a crane. The spherical swivel 5 at the bottom of the lower turntable 2 is dropped into the spherical groove 4 at the top of the supporting pile body 1, so as to complete the rotary cooperation between the spherical swivel 5 and the spherical groove 4.

[0034] The traction assembly 3 is mounted in place. The connecting ring 33 of the traction assembly 3 and the mounting frame 32 are mounted in a set position to be vertically anchored at the construction site. The winch 31 is mounted on the mounting frame 32. In this embodiment, a plurality of circumferentially distributed locking rings are embedded in the outer ring position at the bottom of the lower turntable 2. The traction rope 34 of the winch 31 of the traction assembly 3 passes through the connecting ring 33 and is connected to the locking rings of the lower turntable 2.

[0035] Then, a plurality of sets of winches 31 are simultaneously started, and the winches 31 pull down the lower turntable 2 to level the lower turntable 2. After the leveling operation of the lower turntable 2 is finished, the dragging action of the winch 31 on the lower turntable 2 is maintained, and then the first connecting member 6 and the second connecting member 7 are connected, thereby further reinforcing the lower turntable 2, so as to improve the stability of the lower turntable 2 and reduce the occurrence of circumferential rotation of the lower turntable 2.

[0036] Then, a template 8 is erected on the outer periphery of the lower turntable 2. The template 8 is mounted on the inner side of a mounting frame 32 of a plurality of traction assemblies 3. The mounting frame 32 supports the back of the pouring template 8, and then steel bar binding and concrete pouring steps are performed. The lower part of the lower turntable 2 is embedded in the concrete structure together with the supporting pile body 1. Specifically, the steel bar binding refers to a fixed connection of the first connecting member 6 and the second connecting member 7. In the concrete pouring instruction, the lower part of the lower turntable 2 is embedded in the concrete structure together with the supporting pile body 1.

[0037] The above are all preferred embodiments of the present application, and do not limit the scope of protection of the present application in this way. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the application shall be covered within the protection scope of this application.

Claims

1. A ball hinge positioning structure for a large-tonnage swivel bridge, characterized by comprising:a lower turntable (2), wherein a spherical swivel (5) protrudes from the center of the bottom of the lower turntable (2);a supporting pile body (1), wherein the supporting pile body (1) is vertically provided and the top thereof is concavely provided with a spherical groove (4) matching with the spherical swivel (5), and the spherical swivel (5) is rotatably connected in the spherical groove (4);a plurality of traction assemblies (3), wherein the plurality of traction assemblies (3) are distributed on the peripheral side of the supporting pile body (1); traction ends of the plurality of traction assemblies (3) are all connected to a lower end face of the lower turntable (2), and the lower turntable (2) is leveled by pulling downwards;wherein the traction assembly (3) comprises a connecting ring (33), a mounting frame (32) and a winch (31) provided on the mounting frame (32); the connecting rings (33) of the plurality of the traction assemblies (3) are distributed on the peripheral side of the supporting pile body (1) and located below the lower turntable (2); the mounting frames (32) of the plurality of the traction assemblies (3) are distributed on the peripheral side of the lower turntable (2) and located outside the connecting ring (33); and the traction rope (34) of the winch (31) passes through the connecting ring (33) and is connected to a bottom edge of the lower turntable (2).

2. The ball hinge positioning structure for the large-tonnage swivel bridge according to claim 1, characterized in that the connecting ring (33) is located directly below an edge of the lower turntable (2); and the traction rope (34) of the winch (31) extends vertically upwards and is fixed to the bottom edge of the lower turntable (2) after passing through the connecting ring (33).

3. The ball hinge positioning structure for the large-tonnage swivel bridge according to claim 2, characterized in that the plurality of mounting frames (32) are configured for supporting the template (8).

4. The ball hinge positioning structure for the large-tonnage swivel bridge according to claim 3, characterized in that a first connecting member (6) is circumferentially distributed on the lower turntable (2); a plurality of second connecting members (7) are circumferentially distributed on the supporting pile body (1); and after the lowerturntable (2) is leveled, the first connecting member (6) is fixedly connected to the second connecting member (7).

5. The ball hinge positioning structure for the large-tonnage swivel bridge according to claim 4, characterized in that the first connecting member (6) is a connecting steel bar; the connecting steel bar is pre-embedded at the bottom of the lower turntable (2); and the second connecting member (7) is a connecting rod which is radially pre-embedded at the outer periphery of the supporting pile body (1).

6. A construction method for the ball hinge positioning structure for the large-tonnage swivel bridge according to claim 5, characterized by comprising the steps ofpouring a supporting pile body (1), and reserving a spherical groove (4) at the top of the supporting pile body (1);mounting the lower turntable (2), and hanging the lower turntable (2) on the supporting pile body (1), wherein the spherical swivel (5) at the bottom of the lower turntable (2) falls into the spherical groove (4) at the top of the supporting pile body (i);mounting a traction assembly (3), wherein a traction rope (34) of a winch (31) of the traction assembly (3) passes through a connecting ring (33) and is connected to the lower turntable (2);starting a plurality of groups of winches (31) for pulling down the lower turntable (2) to level the lower turntable (2);erecting a template (8) on the periphery of the lower turntable (2), and mounting the template (8) on the inner side of mounting frames (32) of the plurality of traction assemblies (3), wherein the mounting frames (32) support the template (8), and then the steps of steel bar binding and concrete pouring are performed; and the lower part of the lower turntable (2) is embedded in the concrete structure together with the supporting pile body (1).

7. The construction method for the ball hinge positioning structure for the large-tonnage swivel bridge according to claim 6, characterized in that after the leveling of the lower turntable (2) is finished, the pulling action of the traction assembly (3) on the lower turntable (2) is maintained, and then the first connecting member (6) and the second connecting member (7) are connected to reinforce the lower turntable (2).A

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