A continuous bridge pushing construction device

Abstract

The application relates to the field of bridge engineering and discloses a continuous bridge jacking construction device, which comprises a supporting base, a driving mechanism and two pushing plates, the supporting base is connected to a bridge pier, the two pushing plates are both slidingly connected to the supporting base, the sliding directions of the two pushing plates are parallel to the pushing direction of the bridge, the two pushing plates are both connected to the driving mechanism, the driving mechanism is used for driving the two pushing plates to move towards each other or away from each other, each pushing plate is provided with a jacking mechanism, and two groups of the jacking mechanisms alternately jack up the bridge; when one of the pushing plates moves along the pushing direction of the bridge, the jacking mechanism on the pushing plate jacks up the bridge. The application can continuously push the bridge forward, and the effect of improving the jacking construction efficiency of the bridge is achieved.

Description

Technical Field

[0001] This application relates to the field of bridge engineering, and in particular to a continuous bridge jacking construction device. Background Technology

[0002] The jacking method refers to a construction method in which the bridge beam is poured or assembled section by section on the embankment behind the abutment during bridge construction, and then jacked longitudinally by a jacking device, so that the beam is placed in place by passing through temporary sliding devices on the top of each pier. The jacking device is a kind of equipment used to jack the beam.

[0003] Currently, most existing bridge jacking construction is carried out using hydraulic jacks. During the bridge construction process, construction workers will set up hydraulic jacks as jacking devices on each bridge pier or temporary pier, and use the reciprocating extension and retraction of the hydraulic jack piston to jack up the beam segment by segment.

[0004] Regarding the aforementioned technologies, the inventors discovered that after a hydraulic jack completes one jacking operation, it needs to return the oil before the next jacking operation can be performed. This results in a slow jacking speed for bridges during construction, leading to low efficiency in bridge jacking construction. Summary of the Invention

[0005] To alleviate the problem of low efficiency in bridge jacking construction during bridge construction, this application provides a continuous bridge jacking construction device.

[0006] This application provides a continuous bridge jacking construction device, which adopts the following technical solution:

[0007] A continuous bridge jacking construction device includes a support base, a drive mechanism, and two push plates. The support base is connected to a bridge pier, and the two push plates are slidably connected to the support base. The sliding direction of the two push plates is parallel to the bridge's jacking direction. Both push plates are connected to the drive mechanism, which drives the two push plates to move closer to or further away from each other. Each push plate is equipped with a lifting mechanism. The two sets of lifting mechanisms alternately lift the bridge. When one of the push plates moves along the bridge's jacking direction, the lifting mechanism on the push plate lifts the bridge.

[0008] By adopting the above technical solution, the two push plates of the drive mechanism move in directions that are closer or further apart. When it is necessary to push the bridge, the drive mechanism is activated, and the two push plates are driven to move in directions that are further apart. At this time, the lifting mechanism on the push plate along the bridge's advancing direction provides support. Then, with the joint operation of multiple pushing devices, the bridge is pushed forward. When the drive mechanism drives the two push plates to move back, the lifting mechanism on the push plate that is pushing the bridge forward retracts, and the lifting mechanism on the other push plate rises to support the bridge. This allows the bridge to continue moving forward under the action of the other push plate while the drive mechanism is driving the two push plates to move back. By repeatedly alternating the use of the two push plates, the pushing device can continuously advance the bridge without interruption, thereby improving the efficiency of bridge pushing construction.

[0009] Preferably, each lifting mechanism includes a stud, a power ring, and a power assembly. The stud is slidably connected to the push plate, the power ring is rotatably connected to the push plate, the power ring is sleeved on the outside of the stud, the power ring is threadedly connected to the stud, and the power assembly is connected to the push plate to drive the power ring to rotate.

[0010] By adopting the above technical solution, the power component drives the power ring to rotate, which in turn drives the stud to rise and fall, thereby enabling the stud to lift the bridge. When the drive mechanism drives the two push plates to slide, the power component drives the two studs to alternately lift the bridge.

[0011] Preferably, the power assembly includes a power plate, a connecting rod, a gear, and a rack. The power plate is slidably connected to the support base and is located on the side of the push plate closer to the other push plate. The connecting rod is fixedly connected to the power plate and slidably connected to the push plate, allowing the push plate to slide. The rack is fixedly connected to the power plate, with its length direction parallel to the sliding direction of the power plate. The gear is coaxially fixedly connected to the power ring and meshes with the rack. Both power plates are connected to the drive mechanism, which drives the two power plates to move in directions that are closer to or further away from each other.

[0012] By adopting the above technical solution, when the bridge is being jacked up, the drive mechanism is activated. The drive mechanism will drive the two power plates to slide in directions that are closer or farther away from each other, which will drive the two racks to move in directions that are closer or farther away from each other, so that the two power rings rotate in opposite directions. This allows the other stud to descend synchronously when one stud rises, thus achieving the alternating raising and lowering of the two studs.

[0013] Preferably, the driving mechanism includes a hydraulic jack and two push rods. The hydraulic jack is fixedly connected to the support base. The two push rods are arranged in a one-to-one correspondence with the two power plates. One end of each push rod is hinged to the power plate corresponding to it, and the other end of each push rod is hinged to the piston rod of the hydraulic jack.

[0014] By adopting the above technical solution, the extension of the piston rod of the hydraulic jack will drive the two push rods to move. The movement of the two push rods will first push the two power plates to slide, and the sliding of the two power plates will drive the two racks to move, which will then drive the two power rings to rotate in opposite directions, realizing the alternating lifting and lowering of the two studs. Then, it will continue to push the power plates to move, so that the power plates can push the push plate to move, realizing the jacking of the bridge. After the piston rod of the hydraulic jack extends to its maximum length, the retraction of the piston rod will pull the two power plates to move closer to each other. At this time, the two power plates will first pull the two racks back, so that the two studs will exchange their support for the bridge, and the stud located at the rear in the direction of bridge advancement will support the bridge. Then, it will continue to pull the power plates, which will pull the two push plates to slide closer to each other through the linkage rod, so that the push plate located at the rear in the direction of bridge advancement will continue to drive the bridge forward a certain distance. Thus, the piston rod of the hydraulic jack can push the bridge forward during both extension and retraction, thereby significantly improving the bridge advancement speed.

[0015] Preferably, the support base is provided with a blocking mechanism, which includes a first blocking plate, a second blocking plate, and a transmission assembly. The first blocking plate and the second blocking plate are slidably connected to the support base. The first blocking plate is located on the side of the push plate away from the hydraulic jack, and two first blocks are fixedly connected to the first blocking plate. The two first blocks block the movement of the two push plates away from each other. The second blocking plate is located on the side of the push plate close to the hydraulic jack, and two second blocks are fixedly connected to the second blocking plate. The two second blocks block the movement of the two push plates close to each other. The transmission assembly is connected to the piston rod of the hydraulic jack. The first blocking plate and the second blocking plate are both connected to the transmission assembly. The hydraulic jack drives the first blocking plate and the second blocking plate to alternately block the two push plates through the transmission assembly.

[0016] By adopting the above technical solution, when the piston rod of the hydraulic jack extends to push the bridge, the two first blocks on the first blocking plate are located at opposite ends of the two push plates, driven by the transmission assembly, and limit and block the push plates. This ensures that the push plates are fixed when the hydraulic jack drives the two power plates to move in opposite directions, thus guaranteeing the lifting and lowering of the two studs. After the lifting and lowering of the two studs is completed, the piston rod of the hydraulic jack continues to extend, driving the first blocking plate to contact the two first blocks and block the two push plates, thus continuing to drive the two power plates to move. It can drive two push plates to move, realizing one push of the bridge; when the piston rod of the hydraulic jack retracts and drives the two power plates to move back, the transmission component drives the two second baffles on the second blocking plate to block and limit the two push plates at the ends that are close to each other, thereby ensuring that the two power plates can first drive the two studs to rise and fall alternately during the retraction process. After the two studs have risen and fallen, the piston rod of the hydraulic jack continues to retract, which can release the two second baffles from limiting the two push plates. Then the two power plates continue to move and drive the two push plates to move back, so that the push plate at the rear can continue to drive the bridge to advance a certain distance.

[0017] Preferably, the transmission assembly includes a sliding rod, a first spring, and a second spring. The sliding rod is slidably connected to the support base and fixedly connected to the piston rod of the hydraulic jack. The sliding rod passes through a first blocking plate and a second blocking plate, both of which are slidably connected to the sliding rod. The first spring is disposed between the sliding rod and the first blocking plate, and applies a thrust to the first blocking plate in the direction of the push plate. The second spring is disposed between the sliding rod and the second blocking plate, and applies a force to the second blocking plate in the direction of the push plate.

[0018] By adopting the above technical solution, when the piston rod of the initial hydraulic jack is in the retracted state, the sliding rod drives the first blocking plate to a position close to the push plate. At this time, the two first stops are respectively located at one end away from each other on the two push plates, limiting the movement of the two push plates. The first spring is in a compressed state. Then, during the extension of the piston rod of the hydraulic jack, the sliding rod is pushed to slide. After the lifting and lowering of the two studs is completed, the piston rod of the hydraulic jack continues to extend, firstly causing the two first stops to disengage from both ends of the two push plates. Then, it continues to extend, thus pushing the two push plates to move. After the piston rod of the hydraulic jack extends to its longest state, the two stops on the second blocking plate move to the one end close to each other on the two push plates under the push of the second spring. This ensures the stability of the two push plates when the power plate moves back to drive the studs to lift and lower, and ensures the smooth lifting and lowering of the two studs when the power plate moves back.

[0019] Preferably, a support seat is fixedly connected to the bridge pier, the support seat is slidably connected to the support seat, the support seat slides along the width direction of the bridge, and a power component is installed on the support seat, the power component is connected to the support seat to drive the support seat to slide.

[0020] By adopting the above technical solution, in order to ensure the stability of the bridge support during the jacking construction process, two sets of jacking devices are installed on each bridge pier. The two sets of jacking devices work together to support the bridge web. When the width of the bridge web is inconsistent, the support seat can be moved laterally by the power component to adjust the support position of the jacking device, thereby adapting to the changes in the width of the bridge web and improving the flexibility of the jacking device.

[0021] Preferably, a top support jack is fixedly connected to the support base, and the top support jack is used to drive the bridge to lift.

[0022] By adopting the above technical solution, when adjusting the jacking support position of the two studs, the jacking jack is activated first to support the bridge, thus avoiding the possibility of the bridge shifting laterally due to the studs supporting the bridge.

[0023] Preferably, the support base has a limiting groove, and both push plates are slidably connected within the limiting groove.

[0024] By adopting the above technical solution, the limiting groove is used to limit and guide the sliding of the two push plates on the support base, thereby improving the stability of the push plates during the sliding process and reducing the possibility of deflection during the jacking of the bridge.

[0025] In summary, this application includes at least the following beneficial technical effects:

[0026] 1. By setting a lifting mechanism on each push plate, when the drive mechanism drives the two push plates to move away from each other, the lifting mechanism on the push plate in front of the bridge in the direction of bridge advancement provides support, thereby realizing the forward pushing of the bridge. When the drive mechanism drives the two push plates to move back, the lifting mechanism on the push plate behind the bridge in the direction of bridge advancement rises to support the bridge. This allows the bridge to continue moving forward under the action of the other push plate while the drive mechanism drives the two push plates to move back. By repeatedly alternating the use of the two push plates, the jacking device can continuously advance the bridge without interruption, thereby improving the efficiency of bridge jacking construction.

[0027] 2. By fixing two first blocks to the first blocking plate and two second blocks to the second blocking plate, when the two push plates are driven to move away from each other, the two first blocks limit the push plates to ensure that the two studs provide alternating support to the bridge. When the two push plates are driven to move closer to each other, the two second blocks limit the push plates to ensure that the two blocks can smoothly provide alternating support to the bridge when they move back.

[0028] 3. By sliding the support seat onto the bearing seat, when the width of the bridge web is inconsistent, the support position of the jacking device can be adjusted by using the power component to move the support seat laterally, thereby adapting to changes in the width of the bridge web and improving the flexibility of the jacking device. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0030] Figure 2 This is a schematic diagram of the power component in the embodiments of this application;

[0031] Figure 3 This is a schematic diagram of the drive mechanism in the embodiments of this application;

[0032] Figure 4 This is a schematic diagram of the lifting mechanism in the embodiments of this application;

[0033] Figure 5 This is a schematic diagram of the blocking mechanism of the hydraulic jack in the extended state in the embodiments of this application;

[0034] Figure 6 This is a schematic diagram of the blocking mechanism in the embodiments of this application;

[0035] Figure 7 This is a schematic diagram of the transmission component in an embodiment of this application.

[0036] Reference numerals: 100, support seat; 110, power component; 120, horizontal push jack; 130, top support jack; 200, support base; 210, limiting strip; 220, limiting groove; 300, push plate; 400, drive mechanism; 410, hydraulic jack; 420, push rod; 500, lifting mechanism; 510, stud; 520, power ring; 530, lifting plate; 540, guide rod; 550, power assembly; 551, power plate; 552, gear; 553, rack; 554, connecting rod; 555, limiting block; 600, blocking mechanism; 610, first blocking plate; 620, first stop; 630, second blocking plate; 640, second stop; 650, transmission assembly; 651, sliding rod; 652, first spring; 653, second spring. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0038] This application discloses a continuous bridge jacking construction device.

[0039] Reference Figure 1 and Figure 2 A continuous bridge jacking construction device includes a support 100 fixedly connected to a bridge pier. A support base 200 is mounted on the support 100, and two push plates 300 are slidably connected to the support base 200. The sliding direction of the two push plates 300 is parallel to the bridge's jacking direction. A drive mechanism 400 is mounted on the support base 200, which drives the two push plates 300 to move towards or away from each other. A jacking mechanism 500 is mounted on each push plate 300, and the two sets of jacking mechanisms 500 alternately jack and support the bridge.

[0040] Reference Figure 2 , Figure 3 and Figure 4 Each lifting mechanism 500 includes a power ring 520 rotatably connected to the push plate 300. The power ring 520 is horizontally positioned, and a stud 510 passes through the power ring 520. The stud 510 is threadedly connected to the power ring 520. The stud 510 is vertically positioned and slidably connected to the push plate 300. A lifting plate 530 is fixedly connected to the top of the stud 510. The lifting plate 530 is horizontally positioned, and a guide rod 540 is fixedly connected to the lifting plate 530. The guide rod 540 is parallel to the axis of the stud 510 and is located on one side of the stud 510. The guide rod 540 passes through the push plate 300, and the guide plate is slidably connected to the push plate 300.

[0041] A power assembly 550 is installed on the push plate 300. The power assembly 550 includes a power plate 551 slidably connected to the support base 200. The power plate 551 is located in the gap between the two push plates 300. The sliding direction of the power plate 551 is parallel to the sliding direction of the push plate 300. Two connecting rods 554 are fixedly connected to the power plate 551. Both connecting rods 554 are parallel to the sliding direction of the power plate 551. One end of each connecting rod 554 is fixedly connected to one end of the push plate 300 closest to itself. The end of the connecting rod 554 away from the power plate 551 passes through the push plate 300. One end of the connecting rod passes into the push plate 300 and is fixedly connected to a limit block 555. The limit block 555 is slidably connected inside the push plate 300. The connecting rod 554 can pull the push plate 300 to move.

[0042] A rack 553 is fixedly connected to the power plate 551, and the length direction of the rack 553 is parallel to the sliding direction of the push plate 300; a gear 552 is fixedly connected to the outer side of the power ring 520 on the same axis, and the gear 552 meshes with the rack 553.

[0043] Reference Figure 2 , Figure 3 and Figure 4 The drive mechanism 400 includes a hydraulic jack 410 fixedly connected to the support base 200. The axis of the hydraulic jack 410 is parallel to the bridge deck and perpendicular to the bridge's propulsion direction. Two push rods 420 are hinged to the piston rod of the hydraulic jack 410. The hinge axis of each push rod 420 and the piston rod of the hydraulic jack 410 is perpendicular to the bridge deck. The two push rods 420 are correspondingly arranged with two power plates 551. The end of the push rod 420 away from the hydraulic jack 410 is hinged to the power plate 551. The hinge axis of the push rod 420 and the power plate 551 is parallel to the hinge axis of the push rod 420 and the hydraulic jack 410.

[0044] Reference Figure 3 , Figure 4 and Figure 5When jacking the bridge, the piston rod of the hydraulic jack 410 is initially in a retracted state. At this time, there is a certain distance between the two power plates 551 and their corresponding push plates 300, and the studs 510 located behind the bridge in the jacking direction provide jacking support for the bridge. Then, the hydraulic jack 410 is activated, and the piston rod of the hydraulic jack 410 extends, pushing the two power plates 551 through the two push rods 420 respectively. Each power plate 551 moves closer to its corresponding push plate 300. During this movement, the power plate 551 drives the studs 510 to rise and fall, thereby causing the studs 510 located in front of the bridge in the jacking direction to rise and the studs 510 located behind the bridge in the jacking direction to fall, thus causing the studs 510 in front to support the bridge. Then, the hydraulic jack 410 continues to push the power plates 551 to move, thus allowing the power plates 551 to rise and fall. 1. The piston rod of the hydraulic jack 410 contacts the push plate 300, which then moves the push plate 300, causing the front push plate 300 to advance the bridge a certain distance. When the piston rod of the hydraulic jack 410 retracts, it first pulls the two power plates 551 to slide in a direction closer to each other. At this time, the rack 553 connected to the two power plates 551 will drive the two studs 510 to rise and fall respectively, causing the front stud 510 to fall and the rear stud 510 to rise, thus allowing the rear stud 510 to support the bridge. The piston rod of the hydraulic jack 410 continues to retract, pulling the two power plates 551 to move the two push plates 300 in a direction closer to each other, so that the rear push plate 300 continues to advance the bridge a certain distance. This allows the piston rod of the hydraulic jack 410 to push the bridge forward during both extension and retraction, thereby significantly improving the bridge's advancement speed.

[0045] Reference Figure 3 , Figure 5 and Figure 6 In order to ensure that the two studs 510 can rise and fall smoothly during the jacking process of the bridge, and to avoid the problem that the two power plates 551 are insufficient to push the two studs 510 to rise and fall and directly push the two push plates 300 to slide, a blocking mechanism 600 is installed on the support base 200.

[0046] Reference Figure 5 , Figure 6 and Figure 7The blocking mechanism 600 includes a transmission assembly 650, which includes a sliding rod 651 slidably connected to the support base 200. The length direction of the sliding rod 651 is parallel to the extension and retraction direction of the piston rod of the hydraulic jack 410. The sliding rod 651 is fixedly connected to the piston rod of the hydraulic jack 410. A first blocking plate 610 and a second blocking plate 630 are slidably connected to the sliding rod 651. The first blocking plate 610 and the second blocking plate 630 are located on opposite sides of the push plate 300, respectively. A first spring 652 and a second spring 653 are sleeved on the sliding rod 651. The first spring 652 is located on the first blocking plate. On the side of 610 away from the two push plates 300, one end of the first spring 652 is fixedly connected to the sliding rod 651, and the other end of the first spring 652 is fixedly connected to the first blocking plate 610. The first spring 652 applies a thrust to the first blocking plate 610 in the direction close to the push plate 300. When the side of the first blocking plate 610 close to the push plate 300 is fixedly connected to two first stops 620, and the piston rod of the hydraulic jack 410 is in the retracted state, the two first stops 620 on the first blocking plate 610 are respectively located at the ends of the two push plates 300 that are far apart from each other, so as to block and limit the two push plates 300.

[0047] The second spring 653 is located on the side of the second blocking plate 630 away from the two push plates 300. One end of the second spring 653 is fixedly connected to the sliding rod 651, and the other end of the second spring 653 is fixedly connected to the second blocking plate 630. The second spring 653 applies a thrust to the second blocking plate 630 in the direction close to the push plate 300. Two second stops 640 are fixedly connected to the side of the second blocking plate 630 close to the push plate 300. When the piston rod of the hydraulic jack 410 is in the extended state, the two second stops 640 on the second blocking plate 630 are respectively located at the ends of the two push plates 300 that are close to each other, so as to block and limit the return movement of the two push plates 300.

[0048] During the bridge jacking construction process, initially, the piston rod of the hydraulic jack 410 is in a retracted state. At this time, the two first stops 620, pushed by the first blocking plate 610, are located at opposite ends of the two push plates 300, and the first stops 620 abut against the push plates 300. Simultaneously, the first spring 652 is in a retracted state, and the second blocking plate 630, driven by the sliding rod 651, is located away from the push plate 300. Then, when the hydraulic jack 410 is activated to push the two power plates 551 in a mutually distancing direction, the push plates 300 at the first... When the stop block 620 is in a fixed position, the power plate 551 moves towards the push plate 300, causing the power ring 520 of the push plate 300 to rotate, thereby enabling the two studs 510 to rise and fall. Then, the piston rod of the hydraulic jack 410 continues to extend, causing the power plate 551 to slide towards the push plate 300. At this time, the piston rod of the hydraulic jack 410 continues to drive the sliding rod 651 to slide. The sliding rod 651 will drive the first stop plate 610 and the second stop plate 630 to move. When the power plate 551 moves and comes into contact with the push plate 300, the first stop plate 610... Two first stops 620 on the first stop plate 610 slide away from both ends of the two push plates 300 under the action of the first stop plate 610. Then, the piston rod of the hydraulic jack 410 continues to extend, driving the two push plates 300 to slide, so that the bridge moves forward a certain distance under the push of the push plate 300 and the stud 510. As the piston rod of the hydraulic jack 410 continues to extend and push the push plate 300, the second stop plate 630 connected to the sliding rod 651 will move with the extension of the piston rod of the hydraulic jack 410. During the movement, the second stop plate 630... The two second stops 640 on the blocking plate 630 will first abut against the side wall of the two push plates 300 near the hydraulic jack 410. With the second spring 653, after the second stops 640 abut against the push plate 300, the piston rod of the hydraulic rod can continue to extend to drive the push plate 300 and the sliding rod 651 to move. After the push plate 300 slides past the second stops 640, the two second stops 640 will slide to the two ends of the two push plates 300 close to each other under the push of the two second springs 653. At this time, the piston rod of the hydraulic jack 410 is at its maximum stroke.Then, the piston rod of the hydraulic jack 410 retracts, causing the two power plates 551 to move back. At this time, the second stop 640 blocks and limits the position of the two push plates 300 during their retraction, allowing the two power plates 551 to smoothly pull the power ring 520 to rotate during the retraction process, causing the two studs 510 to rise and fall, completing the exchange support of the two studs 510 on the bridge. Then, the piston rod of the hydraulic jack 410 continues to retract, causing the two second stop blocks 640 to move, bringing the two second stop blocks 640 closer together from the two push plates 300. One end slides away, and then the two power plates 551 continue to move, driving the two push plates 300 to move back. This allows the push plates 300 and studs 510, located behind the bridge in the pushing direction, to propel the bridge forward a further distance. When the piston rod of the hydraulic jack 410 is fully retracted, the two first stops 620 on the first blocking plate 610 will move back to the two ends of the push plates 300 that are far apart, driven by the sliding rod 651, thus completing one pushing cycle. By continuously repeating the above process, continuous jacking of the bridge can be achieved.

[0049] Reference Figure 3 To ensure the stability of the push plate 300 during the sliding process, the support base 200 is provided with a limiting groove 220. Both push plates 300 are slidably connected in the limiting groove 220. Two limiting strips 210 are fixedly connected to the support base 200, and the two limiting strips 210 are located on both sides of the push plate 300 respectively. The limiting groove 220 and the two limiting strips 210 are used to limit the sliding of the two push plates 300, improve the stability of the push plate 300 during the sliding process, and reduce the possibility of deflection during the jacking of the bridge.

[0050] Reference Figure 1 and Figure 2During the bridge jacking construction process, to ensure the stability of the bridge support, two sets of jacking devices are installed on each bridge pier. These two sets of jacking devices work together to support the bridge web. Occasionally, during the jacking process, the width of the bridge web at the bottom may become inconsistent. In this case, the jacking device's support position needs to be adjusted. Therefore, the support seat 200 is slidably connected to the support seat 100, and the support seat 200 slides along the width direction of the bridge. A power component 110, which is a horizontal push jack 120, is installed on the support seat 100. The horizontal push jack 120 is fixedly connected to the support seat 100, and its piston rod is fixedly connected to the support seat 200. A top support jack 130 is fixedly connected to the support seat 100. The top support jack 130 is vertically positioned and used for auxiliary support of the bridge. When the width of the bridge web changes, first activate the jacking jack 130 to support the bridge and disengage it from the bolts 510. Then, activate the lateral push jack 120 to drive the support base 200 to move laterally, thus adjusting the support position of the jacking device. This adapts to changes in the width of the bridge web and improves the flexibility of the jacking device.

[0051] The implementation principle of a continuous bridge jacking construction device according to an embodiment of this application is as follows: Two push plates 300 are slidably connected on the support base 200, and the studs 510 on the two push plates 300 are used to alternately support the bridge. When the piston of the hydraulic jack 410 extends, the studs 510 on the push plate 300 located in front of the bridge's advancing direction will first support the bridge, thereby pushing the bridge forward a certain distance. Then, the piston rod of the hydraulic jack 410 retracts, first driving the studs 510 on the push plate 300 located in front of the bridge's advancing direction to support the bridge. The stud 510 on the forward-facing push plate 300 descends, and the stud 510 on the rear-facing push plate 300 descends as well. This causes the stud 510 on the rear-facing push plate 300 to support the bridge, allowing the bridge to continue moving forward a certain distance as the piston rod of the hydraulic jack 410 retracts. By repeatedly alternating the use of the two push plates 300, the jacking device can continuously jack the bridge without interruption, thereby improving the efficiency of bridge jacking construction.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A continuous bridge jacking construction device, characterized in that: The bridge includes a support base (200), a drive mechanism (400), and two push plates (300). The support base (200) is connected to the bridge pier. The two push plates (300) are slidably connected to the support base (200). The sliding direction of the two push plates (300) is parallel to the propulsion direction of the bridge. The two push plates (300) are connected to the drive mechanism (400). The drive mechanism (400) is used to drive the two push plates (300) to move towards each other or away from each other. Each push plate (300) is provided with a lifting mechanism (500). The two sets of lifting mechanisms (500) alternately lift the bridge. Each of the lifting mechanisms (500) includes a stud (510), a power ring (520), and a power assembly (550). The stud (510) is slidably connected to the push plate (300), and the power ring (520) is rotatably connected to the push plate (300). The power ring (520) is sleeved on the outside of the stud (510) and threadedly connected to the stud (510). The power assembly (550) is connected to the push plate (300) and is used to drive the power ring (520) to rotate. The power assembly (550) includes a power plate (551), a connecting rod (554), a gear (552), and a rack (553). The power plate (551) is slidably connected to the support base (200) and is located on the side of the push plate (300) near the other push plate (300). The connecting rod (554) is fixedly connected to the power plate (551) and slidably connected to the push plate (300). The connecting rod (554) can drag the push plate (300). The plate (300) slides; the rack (553) is fixedly connected to the power plate (551), the length direction of the rack (553) is parallel to the sliding direction of the power plate (551), the gear (552) is coaxially fixedly connected to the power ring (520), and the gear (552) meshes with the rack (553); both power plates (551) are connected to the drive mechanism (400), and the drive mechanism (400) drives the two power plates (551) to move in directions that are closer to or further away from each other; The drive mechanism (400) includes a hydraulic jack (410) and two push rods (420). The hydraulic jack (410) is fixedly connected to the support base (200). The two push rods (420) are arranged one-to-one with the two power plates (551). One end of each push rod (420) is hinged to the power plate (551) corresponding to it, and the other end of each push rod (420) is hinged to the piston rod of the hydraulic jack (410).

2. The continuous bridge jacking construction device according to claim 1, characterized in that: A blocking mechanism (600) is provided on the support base (200). The blocking mechanism (600) includes a first blocking plate (610), a second blocking plate (630), and a transmission assembly (650). The first blocking plate (610) and the second blocking plate (630) are slidably connected to the support base (200). The first blocking plate (610) is located on the side of the push plate (300) away from the hydraulic jack (410). Two first stops (620) are fixedly connected to the first blocking plate (610). The two first stops (620) block the movement of the two push plates (300) away from each other. The second blocking plate (630) is located on the side of the push plate (300) away from the hydraulic jack (410). The moving plate (300) is located near the side of the hydraulic jack (410). Two second blocks (640) are fixedly connected to the second blocking plate (630). The two second blocks (640) are used to block the movement of the two pushing plates (300) in the direction of approaching each other. The transmission assembly (650) is connected to the piston rod of the hydraulic jack (410). The first blocking plate (610) and the second blocking plate (630) are both connected to the transmission assembly (650). The hydraulic jack (410) drives the first blocking plate (610) and the second blocking plate (630) to alternately block the two pushing plates (300) through the transmission assembly (650).

3. The continuous bridge jacking construction device according to claim 2, characterized in that: The transmission assembly (650) includes a sliding rod (651), a first spring (652), and a second spring (653). The sliding rod (651) is slidably connected to the support base (200) and fixedly connected to the piston rod of the hydraulic jack (410). The sliding rod (651) passes through a first blocking plate (610) and a second blocking plate (630), both of which are connected to the sliding rod (651). The sliding connection is provided, wherein the first spring (652) is disposed between the sliding rod (651) and the first blocking plate (610), and the first spring (652) applies a thrust to the first blocking plate (610) in the direction close to the push plate (300); the second spring (653) is disposed between the sliding rod (651) and the second blocking plate (630), and the second spring (653) applies a force to the second blocking plate (630) in the direction close to the push plate (300).

4. The continuous bridge jacking construction device according to claim 1, characterized in that: A support seat (100) is fixedly connected to the bridge pier. The support seat (200) is slidably connected to the support seat (100). The support seat (200) slides along the width direction of the bridge. A power component (110) is installed on the support seat (100). The power component (110) is connected to the support seat (200) to drive the support seat (200) to slide.

5. A continuous bridge jacking construction device according to claim 4, characterized in that: A top support jack (130) is fixedly connected to the support seat (100), and the top support jack (130) is used to drive the bridge to lift.

6. A continuous bridge jacking construction device according to claim 1, characterized in that: The support base (200) has a limiting groove (220), and both push plates (300) are slidably connected in the limiting groove (220).

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