Bridge swivel construction device based on jack traction system

Abstract

The utility model relates to the technical field of bridge swivel construction devices, in particular to a bridge swivel construction device based on a jack traction system, which comprises a lower bearing platform, a spherical hinge and a jack mechanism, the spherical hinge comprises a lower spherical hinge, an upper spherical hinge and an outer gear ring, the lower spherical hinge is arranged on the upper surface of the lower bearing platform, and the upper spherical hinge and the lower spherical hinge share a rotating central shaft. The outer gear ring is arranged on the periphery of the upper spherical hinge and synchronously rotates with the upper spherical hinge, the jack mechanism comprises jacks and rotatable pawls, the multiple jacks are arranged on the outer side of the spherical hinge in a circumferential array mode, the pawls are arranged at the piston ends of the jacks and matched with tooth grooves of the outer gear ring, and when the piston ends of the jacks stretch out, the pawls are driven by the outer gear ring to rotate. The pawl drives the outer gear ring to rotate in one direction, and by means of the advantage of large thrust of the jack, the device can be suitable for large bridge swivel construction scenes. In addition, the multiple jack combinations are controlled to conduct pushing work in turn, the upper spherical hinge can be driven to rotate continuously, and therefore continuous rotation of the bridge swivel is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of bridge rotation construction devices, specifically relating to a bridge rotation construction device based on a jack traction system. Background Technology

[0002] As my country's railway and highway networks have gradually taken shape, the number of bridge construction projects crossing existing lines is also increasing. Ensuring the safety and reliability of such bridge construction without affecting highway and railway operations is a key research focus. Among the construction methods for bridges crossing existing lines, the rotation method requires fewer machines and equipment, has a simpler process, and is safer to operate. It can effectively overcome the difficulties of constructing structures in high mountains, deep valleys, fast-flowing water, or long-span river channels. Its advantages are particularly evident in the construction of urban overpasses and railway overpasses in busy traffic areas.

[0003] The patent document with publication number CN218540443U discloses a bridge rotation construction device based on a pinion synchronous traction system. The device is based on the ball joint of bridge rotation construction, and the traction cable at the outer edge of the turntable is designed as a gear-shaped slide. The turntable is synchronously pulled around by a pinion system with rated power. The pinion synchronous traction system includes several pinions, which are driven to rotate synchronously by a small engine at their bottom and can mesh with the gear-shaped traction cable. By driving the rotation of the pinions, the turntable is rotated in the target direction, thereby realizing the rotation of the bridge.

[0004] However, the above-mentioned small engines with rated power have limited overload capacity and are prone to overload damage when applied to the rotation construction of ultra-long span bridges, and have poor adaptability to high thrust scenarios. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model proposes a bridge rotation construction device based on a jack traction system. The jack mechanism is used as the power source for bridge rotation construction and is suitable for large-scale bridge rotation construction scenarios.

[0006] To solve the above-mentioned technical problems, this utility model provides a bridge rotation construction device based on a jack traction system, comprising:

[0007] Lower foundation;

[0008] A ball joint includes a lower ball joint, an upper ball joint, and an external toothed ring. The lower ball joint is disposed on the upper surface of the lower bearing platform. The upper ball joint and the lower ball joint are arranged on the same rotational central axis. The external toothed ring is disposed on the periphery of the upper ball joint and rotates synchronously with the upper ball joint.

[0009] A jack mechanism includes a jack and a rotatable pawl. A plurality of jacks are arranged in a circumferential array on the outside of the ball joint. The pawl is located on the piston end of the jack and is adapted to the tooth groove of the external gear ring. When the piston end of the jack is in the initial position, the pawl rotates into the tooth groove of the external gear ring. When the piston end of the jack extends, the pawl drives the external gear ring to rotate unidirectionally. During the retraction of the piston end of the jack, the pawl can rotate out of the tooth groove of the external gear ring.

[0010] Preferably, in the above scheme, the ratchet includes a support block, a helical tooth block, and a return spring. One end of the support block is connected to the piston end of the jack, and the other end is rotatably connected to one end of the helical tooth block. The other end of the helical tooth block is adapted to the tooth groove of the external tooth ring. One end of the return spring is connected to the support block, and the other end is connected to the helical tooth block. The return spring is used to provide a mutual abutting and biting force to the support block and the helical tooth block.

[0011] Preferably, in the above scheme, the tooth groove of the external toothed ring is provided on the outer side, and the upper and lower surfaces of the external toothed ring are respectively provided with ring grooves. The pawl also includes a hook, one end of which is connected to the support block, and the other end extends into the ring groove and is slidably connected to the inner wall of the ring groove.

[0012] Preferably, in the above scheme, the jack mechanism further includes a fixed base, a lateral support, and a vertical support. The jack is horizontally disposed on the outside of the external gear ring. The bottom end of the jack's cylinder is hinged to the fixed base. The lateral support is fixed to the lower support platform and elastically connected to the side of the jack's cylinder, used to provide a force to the piston end of the jack to rotate in the direction close to the external gear ring. The vertical support is disposed below the jack's cylinder, and its top end is slidably connected to the side of the jack's cylinder.

[0013] Preferably, in the above scheme, the tooth groove of the external toothed ring is provided on the bottom surface, and the inner and outer sides of the external toothed ring are respectively provided with ring grooves. The pawl also includes a hook, one end of which is connected to the support block, and the other end extends into the ring groove and is slidably connected to the inner wall of the ring groove.

[0014] Preferably, in the above scheme, the jack mechanism further includes a fixed base, a universal joint, and a vertical support. The jack is horizontally positioned below the external gear ring. The fixed base is connected to the bottom end of the cylinder of the jack through the universal joint. The vertical support is positioned below the cylinder of the jack, and its top end is slidably connected to the side of the cylinder of the jack.

[0015] Preferably, in the above solution, the other end of the hook is slidably disposed in the annular groove, and the vertical support includes a lifting mechanism for adjusting the height of the vertical support.

[0016] Preferably, the above solution further includes a circular slide, support legs, and an upper support platform. The circular slide and the ball joint share the same rotational central axis and are located on the lower support platform outside the ball joint. A plurality of support legs are arranged in a circumferential array above the circular slide and their upper ends are connected to the upper support platform. The upper end of the upper ball joint is connected to the upper support platform.

[0017] Preferably, in the above scheme, the jack mechanism further includes a control system, the two jacks that are furthest apart are configured as a jack combination, and multiple jack combinations are respectively connected to the control system.

[0018] Preferably, in the above scheme, the jack mechanism further includes a displacement sensor, which is disposed on the cylinder of the jack and electrically connected to the control system, for collecting the extension distance of the piston end of the jack.

[0019] Compared with existing technologies, this utility model has the following beneficial effects:

[0020] 1. A bridge rotation construction device based on a jack traction system in this utility model has an outer toothed ring located around the upper ball joint and rotating synchronously with it. Multiple jacks are arranged in a circumferential array on the outside of the ball joint. A pawl is located on the piston end of the jack and is adapted to the tooth groove of the outer toothed ring. When the piston end of the jack is in the initial position, the pawl rotates into the tooth groove of the outer toothed ring. When the piston end of the jack extends, the pawl drives the outer toothed ring to rotate in one direction. Utilizing the large thrust advantage of the jack, it can be applied to large bridge rotation construction scenarios.

[0021] 2. The ratchet in this utility model includes a support block, a helical tooth block, and a return spring. One end of the support block is connected to the piston end of the jack, and the other end is rotatably connected to one end of the helical tooth block. The other end of the helical tooth block is adapted to the tooth groove of the external tooth ring. One end of the return spring is connected to the support block, and the other end is connected to the helical tooth block. The return spring is used to provide a mutual abutting and biting force to the support block and the helical tooth block.

[0022] 3. The external toothed ring in this utility model is provided with a ring groove. One end of the hook is connected to the support block, and the other end extends into the ring groove and slides in connection with the inner wall of the ring groove. Through the cooperation between the hook and the ring groove, the pawl and the external toothed ring are not easily separated, which helps the pawl to quickly reset.

[0023] 4. In this utility model, the two jacks that are furthest apart are set as a jack combination. Multiple jack combinations are connected to the control system. By controlling the multiple jack combinations to work in turn, the upper ball joint can be driven to rotate continuously, so that the bridge body can reach the expected target position faster during continuous rotation. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of a bridge rotation construction device based on a jack traction system according to this utility model.

[0025] Figure 2 This is a schematic diagram of the installation structure of a jack mechanism according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the structure of the ratchet pawl of this utility model.

[0027] Figure 4 This is a schematic diagram of the jack mechanism installation structure according to another embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the external toothed ring mounting structure according to another embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the installation structure of a bridge rotation construction device based on a jack traction system according to this utility model.

[0030] Among them, 1-lower bearing platform, 2-ball joint, 21-lower ball joint, 22-upper ball joint, 23-external toothed ring, 231-tooth groove, 232-ring groove, 3-jack mechanism, 31-jack, 32-pawl, 321-support block, 322-helical toothed block, 323-reset spring, 324-hook, 33-fixed seat, 34-lateral support, 35-vertical support, 36-universal joint, 37-control system, 38-displacement sensor, 4-circular slide, 5-support leg, 6-upper bearing platform. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" 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 mechanical connection or an electrical 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 utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0035] like Figure 1-3As shown, this utility model discloses a bridge rotation construction device based on a jack traction system, including a lower bearing platform 1, a ball joint 2, and a jack mechanism 3. The ball joint 2 includes a lower ball joint 21, an upper ball joint 22, and an external toothed ring 23. The lower ball joint 21 is located on the upper surface of the lower bearing platform 1, and the upper ball joint 22 shares a common rotational axis with the lower ball joint 21. The external toothed ring 23 is located around the periphery of the upper ball joint 22 and rotates synchronously with it. The jack mechanism 3 includes a jack 31 and a rotatable pawl 32. Multiple jacks 31 are arranged in a circumferential array on the outside of the ball joint 2. A pawl 32 is positioned on the piston end of the jack 31 and is adapted to the tooth groove 231 of the external gear ring 23. When the piston end of the jack 31 is in its initial position, the pawl 32 rotates into the tooth groove 231 of the external gear ring 23. When the piston end of the jack 31 extends, the pawl 32 drives the external gear ring 23 to rotate unidirectionally. During the retraction of the piston end of the jack 31, the pawl 32 can rotate out of the tooth groove 231 of the external gear ring 23. It can be understood that in this embodiment, the jack mechanism 3 is used as the power source for bridge rotation construction. Utilizing the large thrust advantage of the jack 31, the pawl 32 and the external gear ring 23 work together to drive the upper ball joint 22 to rotate unidirectionally, making it suitable for large-scale bridge rotation construction scenarios.

[0036] Continue to refer to Figure 3 In this embodiment, the ratchet 32 ​​includes a support block 321, a helical tooth block 322, and a return spring 323. One end of the support block 321 is connected to the piston end of the jack 31, and the other end is rotatably connected to one end of the helical tooth block 322. The other end of the helical tooth block 322 is adapted to the tooth groove 231 of the outer tooth ring 23. One end of the return spring 323 is connected to the support block 321, and the other end is connected to the helical tooth block 322. The return spring 323 is used to provide a mutual abutting and meshing force to the support block 321 and the helical tooth block 322. Specifically, the support block 321 and the helical tooth block 322 are rotatably connected on the side away from the outer tooth ring 23, and a baffle is provided on the outer side of the rotatable connection to limit the maximum rotation angle of the helical tooth block 322. The return spring 323 is located on the side close to the outer tooth ring 23, and can make the support block 321 and the helical tooth block 322 rotate to a mutually meshing state without the action of other external forces.

[0037] Continue to refer to Figure 2In one embodiment, the tooth groove 231 of the outer toothed ring 23 is provided on the outer side, and the upper and lower surfaces of the outer toothed ring 23 are respectively provided with annular grooves 232. The pawl 32 also includes a hook 324. One end of the hook 324 is connected to the support block 321, and the other end extends into the annular groove 232 and slides in connection with the inner wall of the annular groove 232, so as to avoid large-scale displacement between the pawl 32 and the outer toothed ring 23 and help the pawl 32 to quickly reset. Furthermore, the jack mechanism 3 also includes a fixed base 33, a lateral support 34, and a vertical support 35. The jack 31 is horizontally arranged on the outside of the outer gear ring 23. The bottom end of the cylinder of the jack 31 is hinged to the fixed base 33. The lateral support 34 is fixed on the lower support 1 and elastically connected to the side of the cylinder of the jack 31. It is used to give the piston end of the jack 31 a rotational force in the direction close to the outer gear ring 23, so that the helical tooth block 322 and the tooth groove 231 can further mesh. The vertical support 35 is located below the cylinder of the jack 31, and its top end is slidably connected to the side of the cylinder of the jack 31, which can stably support the cylinder of the jack 31.

[0038] Understandably, before the bridge rotation construction begins, the piston end of the jack 31 is not extended, and the helical tooth block 322 is fully engaged with the tooth groove 231. When the bridge rotation construction begins, the piston end of the jack 31 is first extended to drive the upper ball joint 22 to rotate until the piston end of the jack 31 extends to the preset value and then stops. Then, the piston end of the lifting jack 31 is retracted. During the retraction process, the inner side of the helical tooth block 322 will abut against the edge of the outer tooth ring 23, causing the helical tooth block 322 to rotate outward. When the piston end of the jack 31 retracts to the initial position, under the pulling force of the return spring 323, the helical tooth block 322 will rotate into the tooth groove 231. When the piston end of the lifting jack 31 extends again, the helical tooth block 322 can return to the state of abutting and meshing with the support block 321. Repeating the extension and retraction of the piston end of the jack 31 can smoothly complete the bridge rotation construction.

[0039] like Figure 4 , 5As shown, in another embodiment, the tooth groove 231 of the external toothed ring 23 is located on the bottom surface, and the inner and outer sides of the external toothed ring 23 are respectively provided with annular grooves 232. The pawl 32 also includes a hook 324. One end of the hook 324 is connected to the support block 321, and the other end extends into the annular groove 232 and is slidably connected to the inner wall of the annular groove 232. The pawl 32 will not disengage from the external toothed ring 23, which helps the pawl 32 to quickly reset. Specifically, the jack mechanism 3 also includes a fixed seat 33, a universal joint 36, and a vertical support 35. The jack 31 is horizontally arranged below the external toothed ring 23. The fixed seat 33 is connected to the bottom end of the cylinder of the jack 31 through the universal joint 36, so that the extension direction of the piston end of the jack 31 can be finely adjusted. The vertical support 35 is located below the cylinder of the jack 31, and its top end is slidably connected to the side of the cylinder of the jack 31. Furthermore, the other end of the hook 324 is slidably disposed in the annular groove 232, and the vertical support 35 includes a lifting mechanism for adjusting the height of the vertical support 35, thereby adjusting the height of the piston end of the jack 31.

[0040] Understandably, before the bridge rotation construction begins, the piston end of jack 31 is not extended, the top of the vertical support 35 is not in contact with the side of the cylinder of jack 31, and the helical tooth block 322 is completely separated from the tooth groove 231. When the bridge rotation construction begins, first control the lifting mechanism to raise the height of the vertical support 35, which will drive the piston end of jack 31 to move upward until the helical tooth block 322 and the tooth groove 231 mesh with each other and then stop. Then control the piston end of jack 31 to extend, driving the upper ball joint 22 to rotate until the piston end of jack 31 extends a preset distance and then stop. Then control the lifting mechanism to lower back to the initial position, so that the helical tooth block 322 and the tooth groove 231 separate from each other. Finally, control the piston of jack 31 to retract to the initial position to complete the single-pass jacking operation. Repeating the above steps can successfully complete the bridge rotation construction.

[0041] like Figure 6 As shown, this embodiment also includes a circular slide 4, support legs 5, and an upper support platform 6. The circular slide 4 and the ball joint 2 are arranged on the same rotational central axis and are located on the lower support platform 1 outside the ball joint 2. Multiple support legs 5 are arranged in a circumferential array above the circular slide 4 and their upper ends are connected to the upper support platform 6. The upper end of the upper ball joint 22 is connected to the upper support platform 6. The upper surface of the upper support platform 6 is connected to the bridge rotation. The support legs 5 and the circular slide 4 maintain a suitable distance to ensure that the bridge rotation remains stable during the construction process.

[0042] It is worth noting that the jack mechanism 3 in this embodiment also includes a control system 37. The control system 37 is preferably a hydraulic control system, and the jack 31 is preferably a hydraulic jack. The two jacks 31 that are furthest apart are set as a jack combination. Multiple jack combinations are connected to the control system 37 respectively. The hydraulic control system can enable multiple jacks 31 to output uniform thrust synchronously and is not prone to overload problems. By controlling multiple jack combinations to work in turn, the upper ball joint 22 can be driven to rotate continuously, so that the bridge body can reach the expected target position faster during continuous rotation.

[0043] Furthermore, the jack mechanism 3 also includes a displacement sensor 38, which is located on the cylinder of the jack 31 and electrically connected to the control system 37. The displacement sensor 38 is used to collect the extension distance of the piston end of the jack 31, so that the control system 37 can centrally control the working status of multiple jack combinations.

[0044] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A bridge swivel construction device based on a jack pulling system, characterized in that, include: Lower foundation; A ball joint includes a lower ball joint, an upper ball joint, and an external toothed ring. The lower ball joint is disposed on the upper surface of the lower bearing platform. The upper ball joint and the lower ball joint are arranged on the same rotational central axis. The external toothed ring is disposed on the periphery of the upper ball joint and rotates synchronously with the upper ball joint. A jack mechanism includes a jack and a rotatable pawl. A plurality of jacks are arranged in a circumferential array on the outside of the ball joint. The pawl is located on the piston end of the jack and is adapted to the tooth groove of the external gear ring. When the piston end of the jack is in the initial position, the pawl rotates into the tooth groove of the external gear ring. When the piston end of the jack extends, the pawl drives the external gear ring to rotate unidirectionally. During the retraction of the piston end of the jack, the pawl can rotate out of the tooth groove of the external gear ring.

2. The bridge swivel construction device based on the jack traction system according to claim 1, characterized in that, The pawl includes a support block, a helical tooth block, and a return spring. One end of the support block is connected to the piston end of the jack, and the other end is rotatably connected to one end of the helical tooth block. The other end of the helical tooth block is adapted to the tooth groove of the external tooth ring. One end of the return spring is connected to the support block, and the other end is connected to the helical tooth block. The return spring is used to provide a mutual abutting and biting force to the support block and the helical tooth block.

3. The bridge swivel construction device based on the jack traction system according to claim 2, characterized in that, The toothed groove of the external toothed ring is provided on the outer side, and the upper and lower surfaces of the external toothed ring are respectively provided with ring grooves. The pawl also includes a hook, one end of which is connected to the support block, and the other end extends into the ring groove and is slidably connected to the inner wall of the ring groove.

4. The bridge swivel construction device based on the jack traction system according to claim 3, characterized in that, The jack mechanism also includes a fixed base, a lateral support, and a vertical support. The jack is horizontally positioned outside the outer toothed ring. The bottom end of the jack's cylinder is hinged to the fixed base. The lateral support is fixed to the lower support platform and elastically connected to the side of the jack's cylinder, providing a force to the piston end of the jack to rotate in the direction close to the outer toothed ring. The vertical support is located below the jack's cylinder, and its top end is slidably connected to the side of the jack's cylinder.

5. The bridge swivel construction device based on the jack traction system according to claim 2, characterized in that, The toothed groove of the external toothed ring is provided on the bottom surface, and the inner and outer sides of the external toothed ring are respectively provided with ring grooves. The pawl also includes a hook, one end of which is connected to the support block, and the other end extends into the ring groove and is slidably connected to the inner wall of the ring groove.

6. The bridge swivel construction device based on the jack traction system according to claim 5, characterized in that, The jack mechanism also includes a fixed base, a universal joint, and a vertical support. The jack is horizontally positioned below the external toothed ring. The fixed base is connected to the bottom of the jack's cylinder body via the universal joint. The vertical support is positioned below the jack's cylinder body, and its top end is slidably connected to the side of the jack's cylinder body.

7. The bridge swivel construction device based on the jack traction system according to claim 6, characterized in that, The other end of the hook is slidably disposed within the annular groove. The vertical support includes a lifting mechanism for adjusting the height of the vertical support.

8. The bridge swivel construction device based on the jack traction system according to claim 1, characterized in that, It also includes a circular slide, support legs, and an upper support platform. The circular slide and the ball joint share the same rotational central axis and are located on the lower support platform outside the ball joint. A plurality of support legs are arranged in a circumferential array above the circular slide and their upper ends are connected to the upper support platform. The upper end of the upper ball joint is connected to the upper support platform.

9. The bridge swivel construction device based on the jack traction system according to claim 1, characterized in that, The jack mechanism further comprises a control system, two farthest jacks are set as a jack combination, and multiple jack combinations are connected with the control system respectively.

10. The bridge swivel construction device based on the jack traction system according to claim 9, characterized in that, The jack mechanism further comprises a displacement sensor arranged on a cylinder body of the jack and electrically connected with the control system, for collecting the extension distance of a piston end of the jack.

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