Bridge rolling and walking type pushing rectification device and using method

Abstract

The application provides a bridge rolling and walking type pushing and rectifying device, which comprises a bottom plate, a rotating rectifying mechanism installed on the bottom plate, a supporting plate installed on the rotating rectifying mechanism and a rolling pushing mechanism installed on the supporting plate. The application also provides a method for using the bridge rolling and walking type pushing and rectifying device. The rotating rectifying mechanism is connected with the rolling pushing mechanism through the supporting plate, the rolling pushing mechanism can significantly reduce the pushing force, does not generate a large horizontal reaction force on the temporary support, reduces the construction cost and the construction risk, the rotating rectifying mechanism can realize large eccentric adjustment and rotating eccentric adjustment, can timely and comprehensively adjust the eccentricity of the bridge steel beam section conveyed above the rolling pushing mechanism installed on the supporting plate, and thus timely reaches the predetermined position.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a bridge rolling step-type jacking and correction device and its usage method. Background Technology

[0002] Compared to prestressed concrete box girder bridge structures, steel box girders offer advantages such as lighter weight, larger span, higher degree of prefabrication, and faster construction speed. An increasing number of existing bridges utilize steel box girder structures, especially when crossing complex traffic conditions such as rivers, canyons, and highways. The incremental launching method is well-suited for constructing steel box girder bridges in these situations. Among these methods, the walking-type incremental launching method offers good synchronization, safety, and strong controllability, making it a relatively advanced approach.

[0003] Existing step-by-step jacking systems consist of alternating "jacking" and "pushing" steps. First, the steel box girder is placed on the jacking device. Jacking jacks push the girder forward a limited distance, then lifting jacks lift it off the jacking device. The jacking jacks and jacking device are then retracted to their initial positions. Finally, the jacking jacks retract, lowering the girder back onto the jacking device. This cycle is repeated until the predetermined position is reached. If deviation occurs during the jacking process, a correction device is used. Typically, correction jacks are installed on either side or one side of the jacking device.

[0004] However, current walking-type jacking devices generally use slides to push the steel box girder forward during jacking, which requires overcoming the friction between the steel plates. Due to the large tonnage of the steel box girder, the jacking force is very large, which generates a large horizontal reaction force on the temporary support, significantly increasing construction costs and risks. In addition, the current method is only used for fine adjustment and cannot achieve large eccentricity adjustment or even rotational eccentricity adjustment. Summary of the Invention

[0005] To address the aforementioned problems, this invention aims to propose a bridge rolling step-type jacking and correction device and its usage method. By setting a rotating correction mechanism on the base plate, which is connected to the rolling jacking mechanism via a support plate, the rolling jacking mechanism significantly reduces the jacking force and avoids generating large horizontal reaction forces on temporary supports, thus lowering construction costs and risks. The rotating correction mechanism can achieve large eccentricity adjustment as well as rotational eccentricity adjustment, enabling timely and comprehensive eccentricity adjustment of the bridge steel beam segment transported above the rolling jacking mechanism mounted on the support plate, thereby ensuring it reaches the predetermined position promptly.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0007] A bridge rolling step-type jacking and correction device includes a base plate, a rotating correction mechanism mounted on the base plate, a support plate mounted on the rotating correction mechanism, and a rolling jacking mechanism mounted on the support plate.

[0008] Furthermore, the rotational correction mechanism includes a drive gear, a connecting gear, a circumferential correction gear, and a direct-drive motor. The direct-drive motor is fixedly mounted on the base plate and connected to the drive gear. The circumferential correction gear is located at the bottom center of the support plate and is fixedly connected to the support plate. The connecting gear and the circumferential correction gear are rotatably mounted on the base plate through the connecting gear support and the circumferential correction gear support, respectively. The connecting gear is located between the drive gear and the circumferential correction gear and meshes with the drive gear and the circumferential correction gear, respectively.

[0009] Furthermore, a 1-2mm gap is provided between the connecting gear and the support plate. The upper part of the connecting gear support and the circumferential eccentric gear support are both small cylinders, the middle part is a cone, and the bottom part is a large cylinder. The height of the upper small cylinder is the same as the thickness of the connecting gear or the circumferential eccentric gear. The upper small cylinder is inserted into the central hole of the connecting gear or the circumferential eccentric gear to achieve a stable rotational connection. The bottom large cylinder is welded to the base plate.

[0010] Furthermore, the diameter of the drive gear is less than the diameter of the connecting gear, which is less than the diameter of the circumferential straightening gear.

[0011] Furthermore, the rolling jacking mechanism includes a horizontal jacking jack, a jacking platform, a roller groove, and roller units. The horizontal jacking jack is fixedly installed on one end of the support plate by a horizontal jacking support. The roller groove is installed on the support plate and has several roller units inside. The jacking platform is placed on the roller groove and its bottom contacts the roller units. The horizontal jacking jack is connected to one end of the jacking platform.

[0012] Furthermore, the roller unit includes a main roller, a main roller arc support, secondary rollers, a connecting rod, and a secondary roller arc slide. The main roller arc support is a semi-circular rolling groove. Multiple secondary rollers and connecting rods are hinged together to form a closed rotatable chain roller. The main roller is placed on the chain roller, and the chain roller is sleeved on the secondary roller arc slide.

[0013] Furthermore, the end of the secondary roller arc-shaped slide is arc-shaped.

[0014] Furthermore, it also includes horizontal correction jacks. Three sets of horizontal correction jacks are installed on both sides of the support plate, and the front end of the horizontal correction jacks is connected to a pair of rolling rollers that abut against the side wall of the jacking platform.

[0015] Furthermore, it also includes lifting jacks, with a set of lifting jacks installed on the left and right sides behind the support plate.

[0016] To achieve the above objectives, the present invention also provides a method for using a bridge rolling walking type jacking correction device, comprising the following steps:

[0017] S1: When in use, place the bridge steel beam segment on the jacking platform. The horizontal jacking jack can extend and retract to provide power. One end of the horizontal jacking jack is fixed to the horizontal jacking support, and the other end is connected to the end of the jacking platform.

[0018] S2: When the horizontal jacking jack exerts force, the jacking platform moves and forces the main roller in the roller unit to rotate. Through the horizontal correction jack and the roller, the jacking platform is smoothly guided forward.

[0019] S3: Once the jacking platform is pushed to the end of the roller trough, the rotational eccentricity position is adjusted by rotating the correction mechanism;

[0020] S4: After adjustment, the lifting jack lifts the steel beam on the jacking platform, the horizontal jack retracts, and the jacking platform is returned to its initial position. At this time, the lifting jack falls back, so that the bridge steel beam segment is placed back on the jacking platform. At this time, one jacking cycle is completed, and the above steps are repeated for the next jacking cycle.

[0021] Beneficial effects: This invention, by setting a rotating correction mechanism on the base plate, and connecting the rotating correction mechanism to a rolling jacking mechanism via a support plate, can significantly reduce the jacking force and avoid generating a large horizontal reaction force on the temporary support, thereby reducing construction costs and risks. The rotating correction mechanism can achieve large eccentricity adjustment and rotational eccentricity adjustment, and can timely adjust the eccentricity of the bridge steel beam segment conveyed above the rolling jacking mechanism installed on the support plate, so as to reach the predetermined position in a timely manner. Attached Figure Description

[0022] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0023] Figure 1 This is a side view of the bridge rolling walking type jacking and correction device according to an embodiment of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the bridge rolling walking type jacking and correction device according to an embodiment of the present invention;

[0025] Figure 3This is a schematic diagram of the rotating correction mechanism of the bridge rolling walking type jacking correction device according to an embodiment of the present invention;

[0026] Figure 4 This is a side view of the roller unit structure of the bridge rolling walking type jacking and correction device according to an embodiment of the present invention;

[0027] Figure 5 This is a three-dimensional structural diagram of the roller unit of the bridge rolling walking type jacking and correction device according to an embodiment of the present invention. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Example 1

[0031] See Figure 1-5 A bridge rolling step-type jacking and correction device includes a base plate 1, a rotating correction mechanism 2 installed on the base plate 1, a support plate 3 installed on the rotating correction mechanism 2, and a rolling jacking mechanism 4 installed on the support plate 3.

[0032] The rolling jacking mechanism installed on the support plate in this embodiment significantly reduces the jacking force and does not generate a large horizontal reaction force on the temporary support, thereby reducing construction costs and risks. In addition, the rotation correction mechanism in this embodiment can realize large eccentricity adjustment and rotational eccentricity adjustment, which can timely adjust the eccentricity of the bridge steel beam segment conveyed above the rolling jacking mechanism installed on the support plate in all directions, so as to reach the predetermined position in a timely manner.

[0033] In a specific example, the rotational correction mechanism 2 includes a drive gear 201, a connecting gear 202, a circumferential correction gear 203, and a direct-drive motor 204. The direct-drive motor 204 is fixedly mounted on the base plate 1 and connected to the drive gear 201. The circumferential correction gear 203 is located at the bottom center of the support plate 3 and is fixedly connected to the support plate 3. The connecting gear 202 and the circumferential correction gear 203 are rotatably mounted on the base plate 1 through the connecting gear support 205 and the circumferential correction gear support 206, respectively. The connecting gear 202 is located between the drive gear 201 and the circumferential correction gear 203 and meshes with the drive gear 201 and the circumferential correction gear 203, respectively.

[0034] In this embodiment, the direct-drive motor provides power, which drives the circumferential correction gear to rotate through the drive gear and connecting gear, thereby driving the upper support plate to rotate and adjusting the position of the rolling jacking mechanism.

[0035] In a specific example, a 1-2mm gap is provided between the connecting gear 202 and the support plate 3. The upper part of the connecting gear support 205 and the straightening gear support 206 are both small cylinders, the middle part is a cone, and the bottom part is a large cylinder. The height of the upper small cylinder is the same as the thickness of the connecting gear 202 or the circumferential straightening gear 203. The upper small cylinder is inserted into the central hole of the connecting gear 202 or the circumferential straightening gear 203 to achieve a stable rotational connection. The bottom large cylinder is welded to the base plate 1.

[0036] In this embodiment, a 1-2mm gap is maintained between the connecting gear and the support plate, which provides clearance for the rotation of the support plate. In addition, the main support structure of this embodiment consists of a small cylinder at the top, a cone in the middle, and a large cylinder at the bottom. The support structure is stable and can provide stable support for the support plate. Furthermore, in this embodiment, both the correction gear support and the correction gear are located at the bottom center of the support plate, making the rotation of the support plate more stable when it is rotated and adjusted.

[0037] In a specific example, the diameter of the drive gear 201 is less than the diameter of the connecting gear 202, which is less than the diameter of the circumferential correction gear 203.

[0038] In this embodiment, the diameter of the circumferential correction gear is larger than that of the connecting gear and the drive gear. Therefore, it can provide rotational deceleration, prevent the support plate from rotating too fast, and improve the stability of timely all-round eccentric adjustment of the bridge steel beam segment conveyed above the rolling jacking mechanism mounted on the support plate.

[0039] In a specific example, the rolling jacking mechanism 4 includes a horizontal jacking jack 401, a jacking platform 402, a roller groove 403, and roller units 404. The horizontal jacking jack 401 is fixedly installed on one end of the support plate 3 by a horizontal jacking support. The roller groove 403 is installed on the support plate 3 and has a plurality of roller units 404 inside. The jacking platform 402 is placed on the roller groove 403 and its bottom contacts the roller units 404. The horizontal jacking jack 401 is connected to one end of the jacking platform 402.

[0040] In this embodiment, the jacking platform can be driven to move back and forth along the length of the roller groove by using a horizontal jacking jack. Since there are several roller units inside the roller groove, the bottom of the jacking platform is in contact with the roller units. Since the tonnage of the steel bridge section being jacked is large, the traditional jacking method will generate a large friction force, which will cause the horizontal jacking jack to generate a large horizontal reaction force. The rolling method used in this embodiment significantly reduces the jacking friction.

[0041] In a specific example, the roller unit includes a main roller 4041, a main roller arc-shaped support 4042, a secondary roller 4043, a connecting rod 4044, and a secondary roller arc-shaped slide 4045. The main roller arc-shaped support 4042 is a semi-circular rolling groove. Multiple secondary rollers 4043 and connecting rods 4044 are hinged to each other to form a closed rotatable chain roller. The main roller 4041 is placed on the chain roller, and the chain roller is sleeved on the secondary roller arc-shaped slide 4045.

[0042] It should be noted that, due to the large tonnage of the steel bridge sections, bearings would be insufficient to withstand the pressure of the bridge sections. Therefore, a special arc-shaped support for the main roller is designed. The arc-shaped support for the main roller houses the arc-shaped slide of the secondary roller and the chain roller composed of connecting rods and secondary rollers, which allows the main roller to roll smoothly, resulting in high structural strength and more stable and smooth rotation.

[0043] In one specific example, the end of the secondary roller arc track 4045 is arc-shaped.

[0044] In this embodiment, the end of the secondary roller arc-shaped slide is rounded, which facilitates the closed sliding of the chain roller on the secondary roller arc-shaped slide.

[0045] In the specific implementation, multiple roller units are arranged in parallel in the roller groove to form a jacking rolling slide; the jacking platform is placed on the main roller parallel to the direction of the rolling groove.

[0046] In a specific example, it also includes horizontal correction jacks 405. Three sets of horizontal correction jacks 405 are installed on both sides of the support plate 3. The front end of the horizontal correction jacks 405 is connected to a pair of rolling rollers that abut against the side wall of the jacking platform 402.

[0047] In this embodiment, three sets of horizontal correction jacks, together with rolling rollers, are used to guide and correct the horizontal deviation of the jacking platform, preventing the jacking platform from deviating from the horizontal movement track.

[0048] In a specific example, it also includes lifting jacks 406, with a set of lifting jacks 406 installed on the left and right sides behind the support plate 3 respectively.

[0049] It should be noted that when the jacking platform is pushed to the end of the roller trough, the steel beam on the jacking platform is lifted by the lifting jack and lowered into the predetermined position.

[0050] Example 2

[0051] To achieve the above objectives, this embodiment also provides a method for using a bridge rolling walking type jacking correction device, including the following steps:

[0052] S1: When in use, place the bridge steel beam segment on the jacking platform 402. The horizontal jacking jack 401 can extend and retract to provide power. One end of the horizontal jacking jack 401 is fixed to the horizontal jacking support, and the other end is connected to the end of the jacking platform 402.

[0053] S2: When the horizontal jacking jack 401 exerts force, the jacking platform 402 moves and forces the main roller 4041 in the roller unit 404 to rotate. Through the horizontal correction jack 405 and the roller, the jacking platform 402 is smoothly guided forward.

[0054] S3: When the pusher platform 402 is pushed to the end of the roller trough 403, the rotational eccentricity position is adjusted by rotating the correction mechanism 2.

[0055] S4: After adjustment, the lifting jack 406 lifts the steel beam on the jacking platform 402, and the horizontal jacking jack 401 retracts, bringing the jacking platform 402 back to its initial position. At this time, the lifting jack 406 falls back, allowing the bridge steel beam segment to be placed back on the jacking platform 402. This completes one jacking cycle. The next jacking cycle will continue to repeat the above steps.

[0056] The method of using the bridge rolling step-type jacking correction device in this embodiment is the same as the advantages of the bridge rolling step-type jacking correction device over the prior art, and will not be repeated here.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bridge rolling walking type jacking and correction device, characterized in that, The system includes a base plate (1), on which a rotational correction mechanism (2) is installed. A support plate (3) is installed on the rotational correction mechanism (2), and a rolling jacking mechanism (4) is installed on the support plate (3). The rolling jacking mechanism (4) includes a horizontal jacking jack (401), a jacking platform (402), a roller groove (403), and roller units (404). The horizontal jacking jack (401) is fixedly installed on one end of the support plate (3) by a horizontal jacking support. The roller groove (403) is installed on the support plate (3), and several roller units (404) are provided inside the roller groove (403). The jacking platform (402) is placed on the roller groove (403). The bottom is in contact with the roller unit (404); the horizontal jacking jack (401) is connected to one end of the jacking platform (402). The roller unit includes a main roller (4041), a main roller arc support (4042), a secondary roller (4043), a connecting rod (4044), and a secondary roller arc slide (4045). The main roller arc support (4042) is a semi-circular rolling groove. Multiple secondary rollers (4043) and connecting rods (4044) are hinged to each other to form a closed rotatable chain roller. The main roller (4041) is placed on the chain roller, and the chain roller is sleeved on the secondary roller arc slide (4045). The end of the secondary roller arc slide (4045) is arc-shaped.

2. The bridge rolling walking type jacking and correction device according to claim 1, characterized in that, The rotational correction mechanism (2) includes a drive gear (201), a connecting gear (202), a circumferential correction gear (203), and a direct-drive motor (204). The direct-drive motor (204) is fixedly installed on the base plate (1) and connected to the drive gear (201). The circumferential correction gear (203) is located at the bottom center of the support plate (3) and is fixedly connected to the support plate (3). The connecting gear (202) and the circumferential correction gear (203) are rotatably installed on the base plate (1) through the connecting gear support (205) and the circumferential correction gear support (206), respectively. The connecting gear (202) is located between the drive gear (201) and the circumferential correction gear (203) and meshes with the drive gear (201) and the circumferential correction gear (203), respectively.

3. The bridge rolling walking type jacking and correction device according to claim 2, characterized in that, A 1-2mm gap is provided between the connecting gear (202) and the support plate (3). The upper part of the connecting gear support (205) and the straightening gear support (206) are small cylinders, the middle part is a cone, and the bottom part is a large cylinder. The height of the upper small cylinder is consistent with the thickness of the connecting gear (202) or the circumferential straightening gear (203). The upper small cylinder is inserted into the central hole of the connecting gear (202) or the circumferential straightening gear (203) to achieve stable rotational connection. The bottom large cylinder is welded to the base plate (1).

4. The bridge rolling walking type jacking and correction device according to claim 2, characterized in that, The diameter of the drive gear (201) is less than the diameter of the connecting gear (202) and less than the diameter of the circumferential correction gear (203).

5. The bridge rolling walking type jacking and correction device according to claim 1, characterized in that, It also includes horizontal correction jacks (405), and three sets of horizontal correction jacks (405) are installed on both sides of the support plate (3). The front end of the horizontal correction jacks (405) is connected to a pair of rolling rollers that abut against the side wall of the jacking platform (402).

6. The bridge rolling walking type jacking and correction device according to claim 1, characterized in that, It also includes lifting jacks (406), and a set of lifting jacks (406) are installed on the left and right sides behind the support plate (3).

7. A method of using the bridge rolling walking type jacking and correction device according to any one of claims 1-6, characterized in that, Includes the following steps: S1: When in use, the bridge steel beam segment is placed on the jacking platform (402). The horizontal jacking jack (401) can extend and retract to provide power. One end of the horizontal jacking jack (401) is fixed to the horizontal jacking support, and the other end is connected to the end of the jacking platform (402). S2: When the horizontal jacking jack (401) exerts force, the jacking platform (402) moves and forces the main roller (4041) in the roller unit (404) to rotate. Through the horizontal correction jack (405) and the roller, the jacking platform (402) is smoothly guided forward. S3: The push platform (402) is pushed to the end of the roller trough (403), and the rotational eccentricity position is adjusted by the rotational correction mechanism (2); S4: After the adjustment is in place, the lifting jack (406) lifts the steel beam on the jacking platform (402), the horizontal jacking jack (401) retracts, and the jacking platform (402) is retracted back to the initial position. At this time, the lifting jack (406) falls back, so that the bridge steel beam segment is placed back on the jacking platform (402). At this time, one jacking cycle is completed, and the next jacking cycle continues to repeat the above steps.

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